From patchwork Fri Jan 12 12:52:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886018 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=J/wm6EHa; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM2w55t6z1yQ2 for ; Fri, 12 Jan 2024 23:55:36 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH3q-0007fW-UN; Fri, 12 Jan 2024 07:54:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3j-0007du-S7 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:52 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3e-0006NL-Mb for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=mJYQo4Js1hKOdK9+l8fMHg//y3I8p0o7rNQUv17cCXk=; b=J/wm6EHaK3w83H1FMSuh4uOWbR rSWApUDgZgyYiHwTPlcI+dYWRuCth3mWsds7RaRJxl3F6BW+INBZFETRsBBMsGAQtYqU35uRdr867 f9BKFRxUu9G65IYSTjJbPovg+QPBXds5W3wJZ6SHWsZv2yyVxW/8NPDcekeCk19JpJziC84jRIKz9 luj8hc9zBcODB33yWWQleezCvX2K8dU4v4V5Af+PTXh8kuE03ZdFi6LkkDyUhviyKsaC8lxzPDFO4 QUDC11LrST0MhT4TTMrM2F0gnifwNN64QM514pPuj1smExy6/mnxnt3NbL9/te36iq8WoYle9KeWs wW1WhWBl7Izr+WxoRCoOWUGaf+vO+RX6mcPoZFDZ+SCBeRnrTR5LvEllfV2e72Padph4xFOlVSmN/ 0+Q5M19dUwcawpcVvc9YoObz0msP8Si/6vomwK9v0SC/e/ckF3wu5hBoHeOB1Wyr9sFUn/Q1JX6oK yBXVk5bYUTaqBWGiZDOpWOpekG8y5Nm2XE7mQLR9pmUf92gqD7/bh9BbAq2pXvE4Tn877X2F0bfSK JwBkzINak0+PSqWrMuwClm+9M/8a7oe9/Y4iChw7pjENaMNZ8IbYgmHcpaOPNwxtj+1GhUfKCKge6 2n4URuIEP2jzIEgxdGsa3SNh869vzoX99lE9CsTOQ=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH2s-0008jM-IE; Fri, 12 Jan 2024 12:54:02 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:53 +0000 Message-Id: <20240112125420.514425-2-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 01/88] esp: don't clear cmdfifo when esp_select() fails in get_cmd() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The FIFO contents should not be affected if the target selection fails. Signed-off-by: Mark Cave-Ayland Tested-by: Helge Deller --- hw/scsi/esp.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 3a1c9f7c3b..68d07edc05 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -252,11 +252,9 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) fifo8_push_all(&s->cmdfifo, buf, dmalen); } else { if (esp_select(s) < 0) { - fifo8_reset(&s->cmdfifo); return -1; } esp_raise_drq(s); - fifo8_reset(&s->cmdfifo); return 0; } } else { @@ -271,7 +269,6 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) trace_esp_get_cmd(dmalen, target); if (esp_select(s) < 0) { - fifo8_reset(&s->cmdfifo); return -1; } return dmalen; From patchwork Fri Jan 12 12:52:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886016 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH2w-0008jM-S9; Fri, 12 Jan 2024 12:54:06 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:54 +0000 Message-Id: <20240112125420.514425-3-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 02/88] esp: move existing request cancel check into esp_select() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Since get_cmd() can be called multiple times during a mixed FIFO/DMA request, move the existing request cancel check into esp_select() which always occurs at the start of new SCSI request. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 68d07edc05..b382865426 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -209,6 +209,11 @@ static int esp_select(ESPState *s) s->ti_size = 0; fifo8_reset(&s->fifo); + if (s->current_req) { + /* Started a new command before the old one finished. Cancel it. */ + scsi_req_cancel(s->current_req); + } + s->current_dev = scsi_device_find(&s->bus, 0, target, 0); if (!s->current_dev) { /* No such drive */ @@ -235,11 +240,6 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) uint32_t dmalen, n; int target; - if (s->current_req) { - /* Started a new command before the old one finished. Cancel it. */ - scsi_req_cancel(s->current_req); - } - target = s->wregs[ESP_WBUSID] & BUSID_DID; if (s->dma) { dmalen = MIN(esp_get_tc(s), maxlen); From patchwork Fri Jan 12 12:52:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886101 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=ruFMKuLl; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMVj4NXbz1yP3 for ; Sat, 13 Jan 2024 00:16:13 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH3s-0007fx-KL; Fri, 12 Jan 2024 07:55:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3j-0007dx-Td for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:54 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3g-0006OW-VC for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=LrtHaOwavcENjDXgLckDEnbzM2gGcemUsTqaptRr640=; b=ruFMKuLlD3sIvbdkfO18SF7PRG XBr083CyZlTsO0bBYU3JUeDsVDHqZJKvJCMLiZcd4urzbgCnADrkNXZbiCEjDQqppJaJ4fv8g6uCu 1tqmAcA69Ja4AE0ePMSxUX18Wgc9kZ6251g4U/Gzrx4h2mt0FQR9S18hG4tOjmD0NyIJjAEuuNZ1S /DkKoccLxLw5kMFapZj1L2IQVtDbA0CZQ4iJoTHVeINlhAlVFbI7kcx9DEkC5QDoB54sK0DNQ+r25 Gf9wdKV5KCcW6YpDZmQF3PNnoInbxzE7Zfi//lMiv1pxBa0g5Ga1Z6xvROjzgxgRGA670qC408SDz VLOqHqUn31exalzJtLIKvWRJTWomId90CTi87BrNeG9PjxlGaW/5duInA73k4OeUTVVoMmUpjYc5p t+DC4kM561zK4+O6mF3luPqMoWAE87W9UgPl1TCSS0RICw42Ao4s16dT+36KloDmHZknn19U4S4yq 46QhYVJBGWlwxhOHDBYKK0vGcOWM9cv8Pdt00E2xhETLajOeiAl5+iLJsJeEMe7Wlx++Q/+9j/3Bo jJ1YrfMsQqF5KPi10EpSwG07o2tFASeFEu/9m0ToBs7NqvuRj9kMWZ2rjtNNqqlpRrz1bCuErRrcr 5uTVYgYmd4OjOYcWwgZA/OhA1KEp0ckg9zzXxZAqo=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH31-0008jM-5K; Fri, 12 Jan 2024 12:54:11 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:55 +0000 Message-Id: <20240112125420.514425-4-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 03/88] esp.c: add FIFO wraparound support to esp_fifo_pop_buf() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The fifo8_pop_buf() function returns a pointer to the FIFO buffer up to the specified length. Since the FIFO buffer is modelled as an array then once the FIFO wraps around, only the continuous portion of the buffer can be returned. In future the use of continuous and unaligned accesses will advance the internal FIFO head pointer, so modify esp_fifo_pop_buf() to ensure that any wraparound content is also returned up to the requested length. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index b382865426..8d8f6a817a 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -121,17 +121,30 @@ static uint8_t esp_fifo_pop(Fifo8 *fifo) static uint32_t esp_fifo_pop_buf(Fifo8 *fifo, uint8_t *dest, int maxlen) { const uint8_t *buf; - uint32_t n; + uint32_t n, n2; + int len; if (maxlen == 0) { return 0; } - buf = fifo8_pop_buf(fifo, maxlen, &n); + len = maxlen; + buf = fifo8_pop_buf(fifo, len, &n); if (dest) { memcpy(dest, buf, n); } + /* Add FIFO wraparound if needed */ + len -= n; + len = MIN(len, fifo8_num_used(fifo)); + if (len) { + buf = fifo8_pop_buf(fifo, len, &n2); + if (dest) { + memcpy(&dest[n], buf, n2); + } + n += n2; + } + return n; } From patchwork Fri Jan 12 12:52:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886093 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH35-0008jM-Fo; Fri, 12 Jan 2024 12:54:15 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:56 +0000 Message-Id: <20240112125420.514425-5-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 04/88] esp: remove FIFO clear from esp_select() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The FIFO contents should not be affected by performing SCSI target selection. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 8d8f6a817a..89fce05e58 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -220,7 +220,6 @@ static int esp_select(ESPState *s) target = s->wregs[ESP_WBUSID] & BUSID_DID; s->ti_size = 0; - fifo8_reset(&s->fifo); if (s->current_req) { /* Started a new command before the old one finished. Cancel it. */ From patchwork Fri Jan 12 12:52:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886020 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=q5Vc8Frx; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM3b3tfxz1yPy for ; Fri, 12 Jan 2024 23:56:11 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH3q-0007fO-Fw; Fri, 12 Jan 2024 07:54:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3m-0007eS-Ub for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:54 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH3k-0006Rs-SU for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:54:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=2Z7t6nFfDDvi+pCFGJVq7Tjpp5/DfqHou+6ng4VXJgs=; b=q5Vc8FrxbzrL6PDqZvsDYBcc1y kaxPjSBk4NwaKgqWL8/CYnZNxBdi3AyOlqniklVm+BvzYPSfOvWY4y4Z2TlxextOCl8z2owwZycaO tkauEdMR/85y7gny7G1bayDpGgL0Qp3qtx0bQSJpJgP6Rl6AiKtM54xGSdT9zEtuhVMPRjwJ7sl9V Qvh7oYDTc9WdhSVZqEkeXutVZ+2F7c3txAYod/2QglliEjraepMh1JZr+nW527AsZ1thwGd46WdRo VGdNQRE522Bo8nfXiPc6TQLh+Kkt0T0gObRWPfiZFFaaw8BB9jeh6srqS82roZMaW9KAtVrhCglBh qqgGRsARCWhXdpLJvU/F/2ajx1fJ7kUlKurHeDht4TRGYNKfs2bRCIOGI9Cqk1us9e4QEGzB2+QI7 oL/TqBCMI9i0AQALrWkda5E8suBVJbTB34gktk+kPL/5rY349lFcNtw/WTvY7Opu70QxEagrQMYnM ZjeMDicECq1dQI343OJCL7nKXXaeJ+MDcXq1iXTpcjeiGUb8kDmpClcmfVUs0OrcqSfnXK0e44qab rc8XE7GXNNpMiykj/qUxEdH2JEU27NMJRgYt6mXEKSYHXuTnKj9k2iUE2k25TKO0YXAR2AuOerLes 7PLCPxjLD4oVTVnXT3Kj1FFyLYHiM6xJy23l5TSFY=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH39-0008jM-Ow; Fri, 12 Jan 2024 12:54:15 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:57 +0000 Message-Id: <20240112125420.514425-6-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 05/88] esp: move esp_select() to ESP selection commands from get_cmd() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Since the DREQ value depends upon the result of the selection process, add a workaround to each esp_select() to manually assert DREQ durring the MESSAGE OUT and COMMAND phases. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 89fce05e58..8c1c6bfc1c 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -263,10 +263,6 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) dmalen = MIN(fifo8_num_free(&s->cmdfifo), dmalen); fifo8_push_all(&s->cmdfifo, buf, dmalen); } else { - if (esp_select(s) < 0) { - return -1; - } - esp_raise_drq(s); return 0; } } else { @@ -280,9 +276,6 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) } trace_esp_get_cmd(dmalen, target); - if (esp_select(s) < 0) { - return -1; - } return dmalen; } @@ -380,12 +373,18 @@ static void handle_satn(ESPState *s) return; } esp_set_pdma_cb(s, SATN_PDMA_CB); + if (esp_select(s) < 0) { + return; + } cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); if (cmdlen > 0) { s->cmdfifo_cdb_offset = 1; s->do_cmd = 0; do_cmd(s); } else if (cmdlen == 0) { + if (s->dma) { + esp_raise_drq(s); + } s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; @@ -411,12 +410,18 @@ static void handle_s_without_atn(ESPState *s) return; } esp_set_pdma_cb(s, S_WITHOUT_SATN_PDMA_CB); + if (esp_select(s) < 0) { + return; + } cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); if (cmdlen > 0) { s->cmdfifo_cdb_offset = 0; s->do_cmd = 0; do_cmd(s); } else if (cmdlen == 0) { + if (s->dma) { + esp_raise_drq(s); + } s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; @@ -446,6 +451,9 @@ static void handle_satn_stop(ESPState *s) return; } esp_set_pdma_cb(s, SATN_STOP_PDMA_CB); + if (esp_select(s) < 0) { + return; + } cmdlen = get_cmd(s, 1); if (cmdlen > 0) { trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); @@ -456,6 +464,9 @@ static void handle_satn_stop(ESPState *s) s->rregs[ESP_RSEQ] = SEQ_MO; esp_raise_irq(s); } else if (cmdlen == 0) { + if (s->dma) { + esp_raise_drq(s); + } s->do_cmd = 1; /* Target present, switch to message out phase */ s->rregs[ESP_RSEQ] = SEQ_MO; From patchwork Fri Jan 12 12:52:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886024 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=1Nd+JOCP; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM4L4wv9z1yPy for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This flag is set once the transfer counter counts down to zero. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 8c1c6bfc1c..c7b79a2949 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -161,9 +161,15 @@ static uint32_t esp_get_tc(ESPState *s) static void esp_set_tc(ESPState *s, uint32_t dmalen) { + uint32_t old_tc = esp_get_tc(s); + s->rregs[ESP_TCLO] = dmalen; s->rregs[ESP_TCMID] = dmalen >> 8; s->rregs[ESP_TCHI] = dmalen >> 16; + + if (old_tc && dmalen == 0) { + s->rregs[ESP_RSTAT] |= STAT_TC; + } } static uint32_t esp_get_stc(ESPState *s) From patchwork Fri Jan 12 12:52:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886031 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=GC6qrqwO; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3E-0008jM-Fb; Fri, 12 Jan 2024 12:54:24 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:52:59 +0000 Message-Id: <20240112125420.514425-8-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 07/88] esp: start removal of manual STAT_TC setting when transfer counter reaches zero X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This should be exclusively managed by esp_set_tc() rather than being manually set in multiple places. Start by removing the occurrences exclusive to PDMA and command completion which are those that can be currently removed without affecting any test images. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index c7b79a2949..e717b2e216 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -611,11 +611,6 @@ static void do_dma_pdma_cb(ESPState *s) s->async_len -= len; s->ti_size -= len; esp_set_tc(s, esp_get_tc(s) - len); - - if (esp_get_tc(s) == 0) { - /* Indicate transfer to FIFO is complete */ - s->rregs[ESP_RSTAT] |= STAT_TC; - } return; } @@ -720,9 +715,6 @@ static void esp_do_dma(ESPState *s) esp_set_tc(s, esp_get_tc(s) - len); esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); - - /* Indicate transfer to FIFO is complete */ - s->rregs[ESP_RSTAT] |= STAT_TC; return; } } @@ -870,7 +862,8 @@ void esp_command_complete(SCSIRequest *req, size_t resid) * transfers from the target the last byte is still in the FIFO */ if (s->ti_size == 0) { - s->rregs[ESP_RSTAT] = STAT_TC | STAT_ST; + s->rregs[ESP_RSTAT] &= ~7; + s->rregs[ESP_RSTAT] |= STAT_ST; esp_dma_done(s); esp_lower_drq(s); } From patchwork Fri Jan 12 12:53:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886059 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=adokEO1n; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGK3fwdz1yQ1 for ; 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bh=27fRoZHGPFVk58crHINcAUyDNW4V4OJIC2VY021bTNk=; b=adokEO1nzjAQ0x3B9aHjllU2CG 7RWuaOxe6T9QpN5poGJhmXf0VcesLflZwMIPawndac+EfiIdX3liCUPmcfy01LJVvyXA6QF9zFHsN aJz42zzTMPCtgP2JYbvfjbsEByTKo0nLPWkS33XNPDV30UoZO1u3GcqkbJlkmssscLzLMhjNTZIDn jn1GbTrPOMUrsTglUwqivqaHUl43hYzTU8It4rPRxDBvuuFUQCRF9JDz1g3U56vK/wt6JoPHacs5L 3trOoY0ySgEhC2cuCnw4L+PgW3RunsVMJRetKVfH0ZgjuBeXoc3H4eiX7ldP/+W4MiECYJ0Ttl3t5 DSqU8ktIhPtEv+owhzherS46z9ZtvisoG20V0qGa31R9Ckpu97Xer4nc+OQIHHkr+3w1gQ4hvfBNc GovP5oX8Y8/C+yWW+lUpsR15wg3iHp/wGutuby7zmd6Ac0b5+3EIseaTbeiahKQpWWk0lEYS5Ac8F m2ptvrQFXHdUl8uENWzoEHhGfaUAwi7dch82uK+lzgustUbe2WRLPkH+tUrB9VrvBrM1hsx9rLlS2 unSgeRYQp3O6LFDVy6c096ZTybE48FKcTq2MmMgYb+6nU9NNzSeQfdVYCPmKBbGVpK7LdOH0+XaX6 rhmD6nTj0yQtHNXpFaSEfmsX0hG2PedhQOz2OccsI=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3I-0008jM-P8; Fri, 12 Jan 2024 12:54:28 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:00 +0000 Message-Id: <20240112125420.514425-9-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 08/88] esp: move command execution logic to new esp_run_cmd() function X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This helps to simplify esp_reg_write() and potentially allows for a 2-level deep FIFO to be implemented in future. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 177 ++++++++++++++++++++++++++------------------------ 1 file changed, 92 insertions(+), 85 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index e717b2e216..fecfef7c89 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -980,6 +980,97 @@ static void parent_esp_reset(ESPState *s, int irq, int level) } } +static void esp_run_cmd(ESPState *s) +{ + uint8_t cmd = s->rregs[ESP_CMD]; + + if (cmd & CMD_DMA) { + s->dma = 1; + /* Reload DMA counter. */ + if (esp_get_stc(s) == 0) { + esp_set_tc(s, 0x10000); + } else { + esp_set_tc(s, esp_get_stc(s)); + } + } else { + s->dma = 0; + } + switch (cmd & CMD_CMD) { + case CMD_NOP: + trace_esp_mem_writeb_cmd_nop(cmd); + break; + case CMD_FLUSH: + trace_esp_mem_writeb_cmd_flush(cmd); + fifo8_reset(&s->fifo); + break; + case CMD_RESET: + trace_esp_mem_writeb_cmd_reset(cmd); + esp_soft_reset(s); + break; + case CMD_BUSRESET: + trace_esp_mem_writeb_cmd_bus_reset(cmd); + esp_bus_reset(s); + if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) { + s->rregs[ESP_RINTR] |= INTR_RST; + esp_raise_irq(s); + } + break; + case CMD_TI: + trace_esp_mem_writeb_cmd_ti(cmd); + handle_ti(s); + break; + case CMD_ICCS: + trace_esp_mem_writeb_cmd_iccs(cmd); + write_response(s); + s->rregs[ESP_RINTR] |= INTR_FC; + s->rregs[ESP_RSTAT] |= STAT_MI; + break; + case CMD_MSGACC: + trace_esp_mem_writeb_cmd_msgacc(cmd); + s->rregs[ESP_RINTR] |= INTR_DC; + s->rregs[ESP_RSEQ] = 0; + s->rregs[ESP_RFLAGS] = 0; + esp_raise_irq(s); + break; + case CMD_PAD: + trace_esp_mem_writeb_cmd_pad(cmd); + s->rregs[ESP_RSTAT] = STAT_TC; + s->rregs[ESP_RINTR] |= INTR_FC; + s->rregs[ESP_RSEQ] = 0; + break; + case CMD_SATN: + trace_esp_mem_writeb_cmd_satn(cmd); + break; + case CMD_RSTATN: + trace_esp_mem_writeb_cmd_rstatn(cmd); + break; + case CMD_SEL: + trace_esp_mem_writeb_cmd_sel(cmd); + handle_s_without_atn(s); + break; + case CMD_SELATN: + trace_esp_mem_writeb_cmd_selatn(cmd); + handle_satn(s); + break; + case CMD_SELATNS: + trace_esp_mem_writeb_cmd_selatns(cmd); + handle_satn_stop(s); + break; + case CMD_ENSEL: + trace_esp_mem_writeb_cmd_ensel(cmd); + s->rregs[ESP_RINTR] = 0; + break; + case CMD_DISSEL: + trace_esp_mem_writeb_cmd_dissel(cmd); + s->rregs[ESP_RINTR] = 0; + esp_raise_irq(s); + break; + default: + trace_esp_error_unhandled_command(cmd); + break; + } +} + uint64_t esp_reg_read(ESPState *s, uint32_t saddr) { uint32_t val; @@ -1076,91 +1167,7 @@ void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) break; case ESP_CMD: s->rregs[saddr] = val; - if (val & CMD_DMA) { - s->dma = 1; - /* Reload DMA counter. */ - if (esp_get_stc(s) == 0) { - esp_set_tc(s, 0x10000); - } else { - esp_set_tc(s, esp_get_stc(s)); - } - } else { - s->dma = 0; - } - switch (val & CMD_CMD) { - case CMD_NOP: - trace_esp_mem_writeb_cmd_nop(val); - break; - case CMD_FLUSH: - trace_esp_mem_writeb_cmd_flush(val); - fifo8_reset(&s->fifo); - break; - case CMD_RESET: - trace_esp_mem_writeb_cmd_reset(val); - esp_soft_reset(s); - break; - case CMD_BUSRESET: - trace_esp_mem_writeb_cmd_bus_reset(val); - esp_bus_reset(s); - if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) { - s->rregs[ESP_RINTR] |= INTR_RST; - esp_raise_irq(s); - } - break; - case CMD_TI: - trace_esp_mem_writeb_cmd_ti(val); - handle_ti(s); - break; - case CMD_ICCS: - trace_esp_mem_writeb_cmd_iccs(val); - write_response(s); - s->rregs[ESP_RINTR] |= INTR_FC; - s->rregs[ESP_RSTAT] |= STAT_MI; - break; - case CMD_MSGACC: - trace_esp_mem_writeb_cmd_msgacc(val); - s->rregs[ESP_RINTR] |= INTR_DC; - s->rregs[ESP_RSEQ] = 0; - s->rregs[ESP_RFLAGS] = 0; - esp_raise_irq(s); - break; - case CMD_PAD: - trace_esp_mem_writeb_cmd_pad(val); - s->rregs[ESP_RSTAT] = STAT_TC; - s->rregs[ESP_RINTR] |= INTR_FC; - s->rregs[ESP_RSEQ] = 0; - break; - case CMD_SATN: - trace_esp_mem_writeb_cmd_satn(val); - break; - case CMD_RSTATN: - trace_esp_mem_writeb_cmd_rstatn(val); - break; - case CMD_SEL: - trace_esp_mem_writeb_cmd_sel(val); - handle_s_without_atn(s); - break; - case CMD_SELATN: - trace_esp_mem_writeb_cmd_selatn(val); - handle_satn(s); - break; - case CMD_SELATNS: - trace_esp_mem_writeb_cmd_selatns(val); - handle_satn_stop(s); - break; - case CMD_ENSEL: - trace_esp_mem_writeb_cmd_ensel(val); - s->rregs[ESP_RINTR] = 0; - break; - case CMD_DISSEL: - trace_esp_mem_writeb_cmd_dissel(val); - s->rregs[ESP_RINTR] = 0; - esp_raise_irq(s); - break; - default: - trace_esp_error_unhandled_command(val); - break; - } + esp_run_cmd(s); break; case ESP_WBUSID ... ESP_WSYNO: break; From patchwork Fri Jan 12 12:53:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886017 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=tl5yYtt5; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM2v6N94z1yQ1 for ; Fri, 12 Jan 2024 23:55:35 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH44-0007it-S5; Fri, 12 Jan 2024 07:55:12 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH43-0007iN-GY for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:55:11 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH41-0006mn-IR for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:55:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=UWy1SFEHPyFakfRqBUrdjQtvIxVgd8l6c3BoIPJD0R4=; b=tl5yYtt57Xrqx+DZZF2tP1HxJj vPNiwTA0N8/WRavufjXFb6YrWKbXskQ4h87YjIiwMVoxfr6oiTm3EMSGZ5Yq02LcJzccJDRiE+ONv 0d2DIqz6eCaVHaXNu7ZPVQM8uhw5LQz/pGJ/4ZBLh50aXWbiszXhf0Um6it+eSa19DASvdhK/rE+z Q8qroW5JvVFlp6S/D4qYcYls/P94OGs1J0hLi3bCmwO9HYJD17pNOAUAhufT89VT1sTpCNzGUioyj uOykA1J1ZYxDqyAoKrqpNIB17jdgQbLN+mRcIW0s0KemqyJ0Y+qDbSr+0wH/8lGBSAWuGccDzc2gJ Ycrh+6PP97SauVSfC/147KwgMXuJlqPhOtoABW/UKBg+wGhY07DYfTtO4keN//9X3mebzyJ7Hfedj S3EHFqUzhZLDVxBrFocZFW+gxhalqTiypyIq8SlaWzWTi8Qhn0Wgi8rBspx/Xyu4TbR6aHAa8pQgp tg8cOq8890V5JrPBFOmNG4Wv6Ts/mG+w03i0hdTk127vuEAOxl/OZ8NSizsKKyUB3RYUMM/oTrjgL SYwVVk/YE2jvzre4bASD70dnj/SNR72FBjy7Om5Kx3QykmjsEN+V//JsOkcFKx3RLXQcNuCA66Ehz m726Cq0uQmiN4KdApM0OmOncVcEE+7VKKXsLR2Xpc=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3N-0008jM-60; Fri, 12 Jan 2024 12:54:33 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:01 +0000 Message-Id: <20240112125420.514425-10-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 09/88] esp: update TC check logic in do_dma_pdma_cb() to check for TC == 0 X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Invert the logic so that the end of DMA transfer check becomes one that checks for TC == 0 in the from device path in do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index fecfef7c89..63c828c1b2 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -602,21 +602,19 @@ static void do_dma_pdma_cb(ESPState *s) return; } - if (esp_get_tc(s) != 0) { - /* Copy device data to FIFO */ - len = MIN(s->async_len, esp_get_tc(s)); - len = MIN(len, fifo8_num_free(&s->fifo)); - fifo8_push_all(&s->fifo, s->async_buf, len); - s->async_buf += len; - s->async_len -= len; - s->ti_size -= len; - esp_set_tc(s, esp_get_tc(s) - len); - return; + if (esp_get_tc(s) == 0) { + esp_lower_drq(s); + esp_dma_done(s); } - /* Partially filled a scsi buffer. Complete immediately. */ - esp_lower_drq(s); - esp_dma_done(s); + /* Copy device data to FIFO */ + len = MIN(s->async_len, esp_get_tc(s)); + len = MIN(len, fifo8_num_free(&s->fifo)); + fifo8_push_all(&s->fifo, s->async_buf, len); + s->async_buf += len; + s->async_len -= len; + s->ti_size -= len; + esp_set_tc(s, esp_get_tc(s) - len); } } From patchwork Fri Jan 12 12:53:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886021 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=Vapt6Xe2; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3R-0008jM-FW; Fri, 12 Jan 2024 12:54:37 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:02 +0000 Message-Id: <20240112125420.514425-11-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 10/88] esp: move buffer and TC logic into separate to/from device paths in esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The ultimate aim is to for esp_do_dma() behaviour to be determined by the SCSI bus phase, in which case it is necessary to have separate to/from device paths. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 65 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 40 insertions(+), 25 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 63c828c1b2..9893840255 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -678,14 +678,53 @@ static void esp_do_dma(ESPState *s) if (to_device) { if (s->dma_memory_read) { s->dma_memory_read(s->dma_opaque, s->async_buf, len); + + esp_set_tc(s, esp_get_tc(s) - len); + s->async_buf += len; + s->async_len -= len; + s->ti_size += len; + + if (s->async_len == 0) { + scsi_req_continue(s->current_req); + /* + * If there is still data to be read from the device then + * complete the DMA operation immediately. Otherwise defer + * until the scsi layer has completed. + */ + return; + } + + /* Partially filled a scsi buffer. Complete immediately. */ + esp_dma_done(s); + esp_lower_drq(s); } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); - return; } } else { if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, s->async_buf, len); + + esp_set_tc(s, esp_get_tc(s) - len); + s->async_buf += len; + s->async_len -= len; + s->ti_size -= len; + + if (s->async_len == 0) { + scsi_req_continue(s->current_req); + /* + * If there is still data to be read from the device then + * complete the DMA operation immediately. Otherwise defer + * until the scsi layer has completed. + */ + if (esp_get_tc(s) != 0 || s->ti_size == 0) { + return; + } + } + + /* Partially filled a scsi buffer. Complete immediately. */ + esp_dma_done(s); + esp_lower_drq(s); } else { /* Adjust TC for any leftover data in the FIFO */ if (!fifo8_is_empty(&s->fifo)) { @@ -713,32 +752,8 @@ static void esp_do_dma(ESPState *s) esp_set_tc(s, esp_get_tc(s) - len); esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); - return; } } - esp_set_tc(s, esp_get_tc(s) - len); - s->async_buf += len; - s->async_len -= len; - if (to_device) { - s->ti_size += len; - } else { - s->ti_size -= len; - } - if (s->async_len == 0) { - scsi_req_continue(s->current_req); - /* - * If there is still data to be read from the device then - * complete the DMA operation immediately. Otherwise defer - * until the scsi layer has completed. - */ - if (to_device || esp_get_tc(s) != 0 || s->ti_size == 0) { - return; - } - } - - /* Partially filled a scsi buffer. Complete immediately. */ - esp_dma_done(s); - esp_lower_drq(s); } static void esp_do_nodma(ESPState *s) From patchwork Fri Jan 12 12:53:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886056 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=wcLdOo0W; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMG64WmTz1yQ2 for ; Sat, 13 Jan 2024 00:05:18 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH4D-0007jr-2v; Fri, 12 Jan 2024 07:55:21 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH4B-0007jj-M7 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:55:19 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH4A-0006on-7m for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:55:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=myDJe4/tV7pbo92BZXghNd4hfgAdbUryo4MWAxqSheI=; b=wcLdOo0W/pLj2PAkvcCGV3RAMf NwKw76/7NLgRcvkWCOflNQjbyfuMeww8zRx0oTglVHXzFIIosIfy2QtWu73UNLtVqoGX1adSplx5H E55QbAXLTvqv0ONnciBtKvG0zyQZpsnfEZvYQmQDy2+Dz3m4lf9zLklDN+ceOaHNlV2RCi+EbyRYX Tv2TQWYjWNdzSpXFixZN/LMF3TbVO1rcIaHrQoeU+KXDdLT9AsnM/SHwvSWThwsDV3dxjfGZB0MSl /VpQRqF8VbK9+oK3cuUSn/3LNaCJs6LofZNQPrbT9b1EdWclsBv+sQorTOmLwdieQwpXnHfCnMQ88 CHuB6ciAuMR2H1tjGJJA9HkDCYDcx+EEAA/W9IAPrLwcE71LHtm+U4YmlqEvcXv1jEDtBj583NjLZ hsigf75DU3tTJnNUbbdIZub2NfR8a7yRcmDYbhc7IcTEBUGUKUCDnHr0M9kP5gHi1plQk48egM+pC qT6DXVv2Y5Zq0a49uKGj97iRuezB56/6t7UKk7XtgjvKy+z/jcyYqEhvEAzqqHl69iEDgvA2OcdYI kfbj0IQHe27AaU3FxEgxbfUbSXL3yPXCIHDUHfWWoUxnS1j1Tt9T2sGAfR5FQzVxKFcZfopfcWWtS +hOwTU6R/qYzjHdLTkpvn1Lm+pkJThafsRMgGXoy4=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3V-0008jM-PL; Fri, 12 Jan 2024 12:54:41 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:03 +0000 Message-Id: <20240112125420.514425-12-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 11/88] esp.c: remove unused case from esp_pdma_read() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The do_cmd variable is only set for the MESSAGE OUT and COMMAND phases i.e. those which involve transfers from the host to the SCSI bus, and so the unused case can be removed. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 9893840255..6191c17f10 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -187,12 +187,7 @@ static uint8_t esp_pdma_read(ESPState *s) { uint8_t val; - if (s->do_cmd) { - val = esp_fifo_pop(&s->cmdfifo); - } else { - val = esp_fifo_pop(&s->fifo); - } - + val = esp_fifo_pop(&s->fifo); return val; } From patchwork Fri Jan 12 12:53:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886030 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=wfmjNwZQ; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3a-0008jM-2s; Fri, 12 Jan 2024 12:54:46 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:04 +0000 Message-Id: <20240112125420.514425-13-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 12/88] esp.c: don't accumulate directly into cmdfifo X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Instead accumulate in the real FIFO as done in real hardware, and then transfer to cmdfifo when we're ready to process the MESSAGE OUT and COMMAND phase data. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 49 ++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 42 insertions(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6191c17f10..9e9bbe8431 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -199,11 +199,7 @@ static void esp_pdma_write(ESPState *s, uint8_t val) return; } - if (s->do_cmd) { - esp_fifo_push(&s->cmdfifo, val); - } else { - esp_fifo_push(&s->fifo, val); - } + esp_fifo_push(&s->fifo, val); dmalen--; esp_set_tc(s, dmalen); @@ -358,6 +354,14 @@ static void do_cmd(ESPState *s) static void satn_pdma_cb(ESPState *s) { + uint8_t buf[ESP_FIFO_SZ]; + int n; + + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { s->cmdfifo_cdb_offset = 1; s->do_cmd = 0; @@ -395,6 +399,14 @@ static void handle_satn(ESPState *s) static void s_without_satn_pdma_cb(ESPState *s) { + uint8_t buf[ESP_FIFO_SZ]; + int n; + + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { s->cmdfifo_cdb_offset = 0; s->do_cmd = 0; @@ -432,6 +444,14 @@ static void handle_s_without_atn(ESPState *s) static void satn_stop_pdma_cb(ESPState *s) { + uint8_t buf[ESP_FIFO_SZ]; + int n; + + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); s->do_cmd = 1; @@ -523,10 +543,16 @@ static void esp_dma_done(ESPState *s) static void do_dma_pdma_cb(ESPState *s) { int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + uint8_t buf[ESP_CMDFIFO_SZ]; int len; uint32_t n; if (s->do_cmd) { + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + /* Ensure we have received complete command after SATN and stop */ if (esp_get_tc(s) || fifo8_is_empty(&s->cmdfifo)) { return; @@ -754,10 +780,16 @@ static void esp_do_dma(ESPState *s) static void esp_do_nodma(ESPState *s) { int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + uint8_t buf[ESP_FIFO_SZ]; uint32_t cmdlen; - int len; + int len, n; if (s->do_cmd) { + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; @@ -1159,7 +1191,10 @@ void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) break; case ESP_FIFO: if (s->do_cmd) { - esp_fifo_push(&s->cmdfifo, val); + if (!fifo8_is_full(&s->fifo)) { + esp_fifo_push(&s->fifo, val); + esp_fifo_push(&s->cmdfifo, fifo8_pop(&s->fifo)); + } /* * If any unexpected message out/command phase data is From patchwork Fri Jan 12 12:53:05 2024 Content-Type: text/plain; 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Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 9e9bbe8431..f08b816aba 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -259,6 +259,7 @@ static uint32_t get_cmd(ESPState *s, uint32_t maxlen) s->dma_memory_read(s->dma_opaque, buf, dmalen); dmalen = MIN(fifo8_num_free(&s->cmdfifo), dmalen); fifo8_push_all(&s->cmdfifo, buf, dmalen); + esp_set_tc(s, esp_get_tc(s) - dmalen); } else { return 0; } @@ -657,6 +658,7 @@ static void esp_do_dma(ESPState *s) len = MIN(len, fifo8_num_free(&s->cmdfifo)); s->dma_memory_read(s->dma_opaque, buf, len); fifo8_push_all(&s->cmdfifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); From patchwork Fri Jan 12 12:53:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886019 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3i-0008jM-MF; Fri, 12 Jan 2024 12:54:54 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:06 +0000 Message-Id: <20240112125420.514425-15-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 14/88] esp.c: introduce esp_set_phase() helper function X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This function is used to set the current SCSI bus phase in the ESP_RSTAT register without affecting any of flag bits. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 51 ++++++++++++++++++++++++++++++-------------- hw/scsi/trace-events | 1 + 2 files changed, 36 insertions(+), 16 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f08b816aba..3fc7417d7c 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -183,6 +183,19 @@ static uint32_t esp_get_stc(ESPState *s) return dmalen; } +static const char *esp_phase_names[8] = { + "DATA OUT", "DATA IN", "COMMAND", "STATUS", + "(reserved)", "(reserved)", "MESSAGE OUT", "MESSAGE IN" +}; + +static void esp_set_phase(ESPState *s, uint8_t phase) +{ + s->rregs[ESP_RSTAT] &= ~7; + s->rregs[ESP_RSTAT] |= phase; + + trace_esp_set_phase(esp_phase_names[phase]); +} + static uint8_t esp_pdma_read(ESPState *s) { uint8_t val; @@ -316,9 +329,9 @@ static void do_command_phase(ESPState *s) * complete before raising the command completion interrupt */ s->data_in_ready = false; - s->rregs[ESP_RSTAT] |= STAT_DI; + esp_set_phase(s, STAT_DI); } else { - s->rregs[ESP_RSTAT] |= STAT_DO; + esp_set_phase(s, STAT_DO); s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; esp_raise_irq(s); esp_lower_drq(s); @@ -394,7 +407,7 @@ static void handle_satn(ESPState *s) s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RSTAT] = STAT_CD; + esp_set_phase(s, STAT_CD); } } @@ -439,7 +452,7 @@ static void handle_s_without_atn(ESPState *s) s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RSTAT] = STAT_CD; + esp_set_phase(s, STAT_CD); } } @@ -457,7 +470,8 @@ static void satn_stop_pdma_cb(ESPState *s) trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); s->do_cmd = 1; s->cmdfifo_cdb_offset = 1; - s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD; + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; esp_raise_irq(s); @@ -481,7 +495,7 @@ static void handle_satn_stop(ESPState *s) trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); s->do_cmd = 1; s->cmdfifo_cdb_offset = 1; - s->rregs[ESP_RSTAT] = STAT_MO; + esp_set_phase(s, STAT_MO); s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_MO; esp_raise_irq(s); @@ -492,13 +506,14 @@ static void handle_satn_stop(ESPState *s) s->do_cmd = 1; /* Target present, switch to message out phase */ s->rregs[ESP_RSEQ] = SEQ_MO; - s->rregs[ESP_RSTAT] = STAT_MO; + esp_set_phase(s, STAT_MO); } } static void write_response_pdma_cb(ESPState *s) { - s->rregs[ESP_RSTAT] = STAT_TC | STAT_ST; + esp_set_phase(s, STAT_ST); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; esp_raise_irq(s); @@ -516,7 +531,8 @@ static void write_response(ESPState *s) if (s->dma) { if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, buf, 2); - s->rregs[ESP_RSTAT] = STAT_TC | STAT_ST; + esp_set_phase(s, STAT_ST); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; } else { @@ -575,7 +591,8 @@ static void do_dma_pdma_cb(ESPState *s) * and then switch to command phase */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD; + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -681,7 +698,8 @@ static void esp_do_dma(ESPState *s) * and then switch to command phase */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD; + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -810,7 +828,8 @@ static void esp_do_nodma(ESPState *s) * and then switch to command phase */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD; + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -904,8 +923,7 @@ void esp_command_complete(SCSIRequest *req, size_t resid) * transfers from the target the last byte is still in the FIFO */ if (s->ti_size == 0) { - s->rregs[ESP_RSTAT] &= ~7; - s->rregs[ESP_RSTAT] |= STAT_ST; + esp_set_phase(s, STAT_ST); esp_dma_done(s); esp_lower_drq(s); } @@ -1065,7 +1083,7 @@ static void esp_run_cmd(ESPState *s) trace_esp_mem_writeb_cmd_iccs(cmd); write_response(s); s->rregs[ESP_RINTR] |= INTR_FC; - s->rregs[ESP_RSTAT] |= STAT_MI; + esp_set_phase(s, STAT_MI); break; case CMD_MSGACC: trace_esp_mem_writeb_cmd_msgacc(cmd); @@ -1133,7 +1151,8 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) * The last byte of a non-DMA transfer has been read out * of the FIFO so switch to status phase */ - s->rregs[ESP_RSTAT] = STAT_TC | STAT_ST; + esp_set_phase(s, STAT_ST); + s->rregs[ESP_RSTAT] |= STAT_TC; } } s->rregs[ESP_FIFO] = esp_fifo_pop(&s->fifo); diff --git a/hw/scsi/trace-events b/hw/scsi/trace-events index bdd4e2c7c7..d72f741ed8 100644 --- a/hw/scsi/trace-events +++ b/hw/scsi/trace-events @@ -197,6 +197,7 @@ esp_mem_writeb_cmd_selatns(uint32_t val) "Select with ATN & stop (0x%2.2x)" esp_mem_writeb_cmd_ensel(uint32_t val) "Enable selection (0x%2.2x)" esp_mem_writeb_cmd_dissel(uint32_t val) "Disable selection (0x%2.2x)" esp_mem_writeb_cmd_ti(uint32_t val) "Transfer Information (0x%2.2x)" +esp_set_phase(const char *phase) "setting bus phase to %s" # esp-pci.c esp_pci_error_invalid_dma_direction(void) "invalid DMA transfer direction" From patchwork Fri Jan 12 12:53:07 2024 Content-Type: text/plain; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3m-0008jM-Vp; Fri, 12 Jan 2024 12:54:55 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:07 +0000 Message-Id: <20240112125420.514425-16-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 15/88] esp.c: remove another set of manual STAT_TC updates X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Following on from the recent changes to when the TC is updated, it is now possible to remove another set of manual STAT_TC updates so that its state is now managed within esp_set_tc(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 3fc7417d7c..6fd5c8767a 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -513,7 +513,6 @@ static void handle_satn_stop(ESPState *s) static void write_response_pdma_cb(ESPState *s) { esp_set_phase(s, STAT_ST); - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; esp_raise_irq(s); @@ -532,7 +531,6 @@ static void write_response(ESPState *s) if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, buf, 2); esp_set_phase(s, STAT_ST); - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; } else { @@ -550,10 +548,8 @@ static void write_response(ESPState *s) static void esp_dma_done(ESPState *s) { - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS; s->rregs[ESP_RFLAGS] = 0; - esp_set_tc(s, 0); esp_raise_irq(s); } @@ -592,7 +588,6 @@ static void do_dma_pdma_cb(ESPState *s) */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -699,7 +694,6 @@ static void esp_do_dma(ESPState *s) */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -829,7 +823,6 @@ static void esp_do_nodma(ESPState *s) */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -952,7 +945,6 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * completion interrupt */ s->data_in_ready = true; - s->rregs[ESP_RSTAT] |= STAT_TC; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } @@ -997,7 +989,6 @@ static void handle_ti(ESPState *s) if (s->dma) { dmalen = esp_get_tc(s); trace_esp_handle_ti(dmalen); - s->rregs[ESP_RSTAT] &= ~STAT_TC; esp_do_dma(s); } else { trace_esp_handle_ti(s->ti_size); @@ -1152,7 +1143,6 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) * of the FIFO so switch to status phase */ esp_set_phase(s, STAT_ST); - s->rregs[ESP_RSTAT] |= STAT_TC; } } s->rregs[ESP_FIFO] = esp_fifo_pop(&s->fifo); From patchwork Fri Jan 12 12:53:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886028 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=XR48erWf; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3n-0008jM-GG; Fri, 12 Jan 2024 12:54:59 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:08 +0000 Message-Id: <20240112125420.514425-17-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 16/88] esp.c: remove MacOS TI workaround that pads FIFO transfers to ESP_FIFO_SZ X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This workaround is no longer required with the current code and so can be removed. [Note: whilst MacOS itself can boot correctly, removing this hack prevents a bootable EMILE CDROM from working. This is caused by a separate bug which will be fixed by a subsequent patch] Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6fd5c8767a..f41b2421f9 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -772,18 +772,6 @@ static void esp_do_dma(ESPState *s) s->async_buf += len; s->async_len -= len; s->ti_size -= len; - - /* - * MacOS toolbox uses a TI length of 16 bytes for all commands, so - * commands shorter than this must be padded accordingly - */ - if (len < esp_get_tc(s) && esp_get_tc(s) <= ESP_FIFO_SZ) { - while (fifo8_num_used(&s->fifo) < ESP_FIFO_SZ) { - esp_fifo_push(&s->fifo, 0); - len++; - } - } - esp_set_tc(s, esp_get_tc(s) - len); esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); From patchwork Fri Jan 12 12:53:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886023 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3r-0008jM-Px; Fri, 12 Jan 2024 12:55:03 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:09 +0000 Message-Id: <20240112125420.514425-18-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 17/88] esp.c: don't reset the TC and ESP_RSEQ state when executing a SCSI command X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org There is no need to manually reset these values as the ESP emulation now correctly handles them within its existing logic. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f41b2421f9..a4a1f41a40 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -319,10 +319,7 @@ static void do_command_phase(ESPState *s) s->ti_size = datalen; fifo8_reset(&s->cmdfifo); if (datalen != 0) { - s->rregs[ESP_RSTAT] = STAT_TC; - s->rregs[ESP_RSEQ] = SEQ_CD; s->ti_cmd = 0; - esp_set_tc(s, 0); if (datalen > 0) { /* * Switch to DATA IN phase but wait until initial data xfer is From patchwork Fri Jan 12 12:53:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886076 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=kIyF1Tco; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH3v-0008jM-WD; Fri, 12 Jan 2024 12:55:08 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:10 +0000 Message-Id: <20240112125420.514425-19-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 18/88] esp.c: don't clear RFLAGS register when DMA is complete X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The internal state of the ESP sequencer is not affected when raising an interrupt to indicate the end of a DMA transfer. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index a4a1f41a40..5b9c3f1e5e 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -546,7 +546,6 @@ static void write_response(ESPState *s) static void esp_dma_done(ESPState *s) { s->rregs[ESP_RINTR] |= INTR_BS; - s->rregs[ESP_RFLAGS] = 0; esp_raise_irq(s); } From patchwork Fri Jan 12 12:53:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886071 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=SMxQuEho; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH40-0008jM-6s; Fri, 12 Jan 2024 12:55:12 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:11 +0000 Message-Id: <20240112125420.514425-20-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 19/88] esp: remove zero transfer size check from esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The TI end of transfer interrupt only occurs when the TC reaches zero and is not related to the SCSI layer transfer. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 5b9c3f1e5e..dc515e6435 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -748,7 +748,7 @@ static void esp_do_dma(ESPState *s) * complete the DMA operation immediately. Otherwise defer * until the scsi layer has completed. */ - if (esp_get_tc(s) != 0 || s->ti_size == 0) { + if (esp_get_tc(s) != 0) { return; } } From patchwork Fri Jan 12 12:53:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886042 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=bdBVud5G; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMCY0qMrz1yP3 for ; Sat, 13 Jan 2024 00:03:05 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH4w-000187-An; Fri, 12 Jan 2024 07:56:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH4u-00012l-J2 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:04 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH4s-0007BU-WE for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=tJdK0jGFlBbCMpIBpAerVRNgezRRrjb4h7h9R1wNMF0=; b=bdBVud5GHsmWQNFsF3DPruJ0hw cryJzwW3MdWtiIFkXwQghc02pAeVpU4PPuzm9RSCfKe5FOBlbBQd1femb3woPifsCGodn5sg+7jnM deeeHjgNVfzy0XE44HcsRSZfcMmsI0c4IBs/gClPFxBF6e/OQHx+OMCQi/1aqsMnMUHmF/4H7vnXk LN00LDXqqulHMlyCGFhR32GRU8eddqi0L8h2EBmt75la4QWVLirHjz+aTUdEKcgIyAozf/BOGetBV a4rJ42qX0EL1AsS5suyANXD7qwskWavBImtJ+qeBx5BrRJtOuv2pzYdZOw3LZqR6L7wY7Nm2CFltP 2XRr6i31F1BVj++V0UnDew1ivsDWrydR8cEa5A8sntMj9pCYG+A/c7SBPu4WBYvw9FVvIBlS+ORHv yZesxNhG92qUl4TKB1caefS9chOpR8SDNRrKHTo2tmte5kg81CZLzGULDo1KVoJ6WBIwCAHOPOrlN eSn9XDJru8sCqTFkFL+rGdYKZRMpf8trhWeVpoQSiM7gJWqFGPnqYxblHC9XZ4dcTa4ljDbLeVarw i5PL9iN6VKYdOwhcJA/yBXOVmhxYfsfZPxoQfGyVuS71eyTunXczKFmUL20SsIhawUyGtgXDvvWvE U15C0u9MzZcSyc6ZPoPJO0iZjBnzbMVzRBWk1I4CA=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH44-0008jM-Ga; Fri, 12 Jan 2024 12:55:16 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:12 +0000 Message-Id: <20240112125420.514425-21-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 20/88] esp.c: update condition for esp_dma_done() in esp_do_dma() from device path X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org No change to the condition itself, other than to clarify that esp_dma_done() must be called when TC is zero. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index dc515e6435..96723efcf3 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -743,19 +743,13 @@ static void esp_do_dma(ESPState *s) if (s->async_len == 0) { scsi_req_continue(s->current_req); - /* - * If there is still data to be read from the device then - * complete the DMA operation immediately. Otherwise defer - * until the scsi layer has completed. - */ - if (esp_get_tc(s) != 0) { - return; - } } - /* Partially filled a scsi buffer. Complete immediately. */ - esp_dma_done(s); - esp_lower_drq(s); + if (esp_get_tc(s) == 0) { + /* Partially filled a scsi buffer. Complete immediately. */ + esp_dma_done(s); + esp_lower_drq(s); + } } else { /* Adjust TC for any leftover data in the FIFO */ if (!fifo8_is_empty(&s->fifo)) { From patchwork Fri Jan 12 12:53:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886022 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=xjQUuV6/; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM4756mxz1yPy for ; Fri, 12 Jan 2024 23:56:39 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH5B-0001Zh-PP; Fri, 12 Jan 2024 07:56:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH52-0001O3-Ib for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:13 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH4x-0007FS-6I for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=2z0FKqMn6UPzV+I5UHN9RM5PK+3b5SwEo7FgjWvykkc=; b=xjQUuV6/jHNMOzeDUhhADqFO+D 9X5wf1gLr04ixkdgk7SD/iFV2FBS9Lje6/B/5A0ExKmsK4ZIzgJ60W1b3/cVLCjrjlTFP2D9tnybR RMzNs45Mpqw9Tw7cHP0lRdPLI6vsmzWGa35XElWdNevLt9bD9hKRB1QJfKi+wkWannzqVv71SJnJm 4BG66koevy+yyxRbb2J045JJZdOKBPA6vbuM41Jb/QoDX4U0ZsWOR9h3kvPiviwkeDboAE3NeAjU1 lFggiOi4E5JZmamTvmlR2D4KM1Vl2/Pyy2lpEVQVJsxXlH9PFj7DBLzjF6NcXZisOx+5R7vqWVqK6 PbtvUxv6RdntYh8Ty5UKxRVHvgv6stEn03DVJv8yClUY7IJtnCYbC+wOpgHNTgTN+XF9r5oGFPYHX gcoNNQ1u7iuv+zrN1fA+YZQvzEDR4gAg9px4zJXpnaPKvYkBDQ0hk16q4Snxf4uqqcFkpIrBuKQzJ yYK8y8/b11vI6V7jG/JIBkQ2qsQ12zKgyDNDTJ+vwAL5oU4eUmI434aioSN06H5qxCahlwW9jCR4W sRbtHvMg3ftODaqmg4cBJXNNPSND0QCN48ttKFrMqDcG07kZZsTXUntBhoQBETswA3F/79onOYfcs GbZsIDTibr55v0fkbPpw3TqCOXSI2kIxrtHdihaLQ=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH48-0008jM-Pe; Fri, 12 Jan 2024 12:55:20 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:13 +0000 Message-Id: <20240112125420.514425-22-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 21/88] esp.c: update condition for esp_dma_done() in esp_do_dma() to device path X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Ensure that esp_dma_done() is only called when TC is zero, which is currently always the case for DMA transfers. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 96723efcf3..06be9f2e74 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -725,9 +725,11 @@ static void esp_do_dma(ESPState *s) return; } - /* Partially filled a scsi buffer. Complete immediately. */ - esp_dma_done(s); - esp_lower_drq(s); + if (esp_get_tc(s) == 0) { + /* Partially filled a scsi buffer. Complete immediately. */ + esp_dma_done(s); + esp_lower_drq(s); + } } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); From patchwork Fri Jan 12 12:53:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886029 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=TwuqYR9q; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM5y0B4Tz1yPy for ; Fri, 12 Jan 2024 23:58:14 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH5R-00025K-DH; Fri, 12 Jan 2024 07:56:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH59-0001UF-BF for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:19 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH51-0007Iv-5j for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Qab9peJFZQHq4g0ah/0J+qGpM5fA/VyNtmbY/bhz/FQ=; b=TwuqYR9q5G6e+TdGXshy9h5lBB BMjlxefMNnUZObQuEEpRgVFZhdWysrlZMnjr19y/LfMyVvXBbu4vE0ugVrm5WHcWOcQQBk1bPoOhc 260t3hng9yEhpCzNM1wzWpOe043qtRlJf7UcUXKuNXw8n8hDnI6lUbeBXUbYElNy0qmWPMZo4Vzl9 gPx0PafasG1jDT/nWPWC+0Np+JCiugEbZyU+uOTsDWHHC/KslrTq3SeKF3NgOfcqxWfEIlryYgFGj upodAj7Qo4DuoWjAXNonvioxBJh6MQp9TLVHGHBwJ1FT1V7/kaNYIKH/FJlpatApQa7P//trnNxjy QecmtcrtjbHDc3AxoHCTYORJv48ykUakmcoKgK4xOBOI57tb/CrUCdbYa1J3Dxc18RjaJNHF/AKCL dS3+zxsqG/M2/3AHEummXG0PkBvev9RjLQvv7BkbgS6eDPgLN/JoMZ8EStegd+UKLAmjfSvg4N9iR 2MLjj7wrdwvNO6+9bl3H1DDShIfFQPfJlla9wgU7+Wj069zwztPFpZyj23Hd+bI1C+vxXC6CGB5lx q5YaQ497D9SRcE/AtdcgSBt5ylhmBgRI2bEu3jLxqLFFtlkx3auCcAkJkM9BcXq1uAYoE2//2hWIj uvX+I0nmgCZrhpOaY1oCGxpYXXppfSKSqorxmN7Vw=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4D-0008jM-3B; Fri, 12 Jan 2024 12:55:25 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:14 +0000 Message-Id: <20240112125420.514425-23-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 22/88] esp.c: ensure that the PDMA callback is called for every device read X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Rather than wait for the FIFO to fill up before calling the PDMA callback, push that logic directly into the from_device logic in do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 06be9f2e74..d80a38daa0 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -625,14 +625,14 @@ static void do_dma_pdma_cb(ESPState *s) return; } else { - if (s->async_len == 0) { + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); s->data_in_ready = false; return; } - if (esp_get_tc(s) == 0) { + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { esp_lower_drq(s); esp_dma_done(s); } @@ -1419,9 +1419,7 @@ static uint64_t sysbus_esp_pdma_read(void *opaque, hwaddr addr, val = (val << 8) | esp_pdma_read(s); break; } - if (fifo8_num_used(&s->fifo) < 2) { - esp_pdma_cb(s); - } + esp_pdma_cb(s); return val; } From patchwork Fri Jan 12 12:53:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886066 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4H-0008jM-D1; Fri, 12 Jan 2024 12:55:25 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:15 +0000 Message-Id: <20240112125420.514425-24-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 23/88] esp.c: don't immediately raise INTR_BS if SCSI data needed in esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In the case when more data is requested from the SCSI layer during a DMA data transfer from a device, don't immediately fall through to the TC check logic. Otherwise when TC is zero INTR_BS will be raised immediately rather than when the next set of SCSI data is ready. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index d80a38daa0..1f9902aec0 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -745,6 +745,7 @@ static void esp_do_dma(ESPState *s) if (s->async_len == 0) { scsi_req_continue(s->current_req); + return; } if (esp_get_tc(s) == 0) { From patchwork Fri Jan 12 12:53:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886100 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=g4ZnqS4A; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4H-0008jM-Mp; Fri, 12 Jan 2024 12:55:25 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:16 +0000 Message-Id: <20240112125420.514425-25-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 24/88] esp.c: remove TC adjustment in esp_do_dma() from device path X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Now that the TC is updated for each PDMA access (rather than once the FIFO is full) there is no need to adjust the TC at start of each DMA transfer if the FIFO is not empty. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 1f9902aec0..ec82097a01 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -754,11 +754,6 @@ static void esp_do_dma(ESPState *s) esp_lower_drq(s); } } else { - /* Adjust TC for any leftover data in the FIFO */ - if (!fifo8_is_empty(&s->fifo)) { - esp_set_tc(s, esp_get_tc(s) - fifo8_num_used(&s->fifo)); - } - /* Copy device data to FIFO */ len = MIN(len, fifo8_num_free(&s->fifo)); fifo8_push_all(&s->fifo, s->async_buf, len); From patchwork Fri Jan 12 12:53:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886040 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=g64uwjbi; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4I-0008jM-0O; Fri, 12 Jan 2024 12:55:30 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:17 +0000 Message-Id: <20240112125420.514425-26-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 25/88] esp.c: remove unaligned adjustment in do_dma_pdma_cb() to device path X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org With the latest changes this condition cannot occur anymore and so the logic can be completely removed. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index ec82097a01..3db90c9ab7 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -604,15 +604,6 @@ static void do_dma_pdma_cb(ESPState *s) s->async_len -= n; s->ti_size += n; - if (n < len) { - /* Unaligned accesses can cause FIFO wraparound */ - len = len - n; - n = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); - s->async_buf += n; - s->async_len -= n; - s->ti_size += n; - } - if (s->async_len == 0) { scsi_req_continue(s->current_req); return; From patchwork Fri Jan 12 12:53:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886065 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4M-0008jM-AH; Fri, 12 Jan 2024 12:55:34 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:18 +0000 Message-Id: <20240112125420.514425-27-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 26/88] esp.c: remove unneeded if() check in esp_transfer_data() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The following ti_cmd checks ensure that only DMA and non-DMA TI commmands will can call into the esp_do_dma() and esp_do_nodma() callbacks. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 3db90c9ab7..96123c5f7d 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -916,16 +916,13 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) esp_raise_irq(s); } - if (s->ti_cmd == 0) { - /* - * Always perform the initial transfer upon reception of the next TI - * command to ensure the DMA/non-DMA status of the command is correct. - * It is not possible to use s->dma directly in the section below as - * some OSs send non-DMA NOP commands after a DMA transfer. Hence if the - * async data transfer is delayed then s->dma is set incorrectly. - */ - return; - } + /* + * Always perform the initial transfer upon reception of the next TI + * command to ensure the DMA/non-DMA status of the command is correct. + * It is not possible to use s->dma directly in the section below as + * some OSs send non-DMA NOP commands after a DMA transfer. Hence if the + * async data transfer is delayed then s->dma is set incorrectly. + */ if (s->ti_cmd == (CMD_TI | CMD_DMA)) { if (dmalen) { From patchwork Fri Jan 12 12:53:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886027 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=J4a8wIgp; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM4p6Pc2z1yPy for ; Fri, 12 Jan 2024 23:57:14 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOH5U-0002YQ-IT; Fri, 12 Jan 2024 07:56:40 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH5L-0001zu-JT for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:31 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOH5E-0007N8-IG for qemu-devel@nongnu.org; Fri, 12 Jan 2024 07:56:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=0Z/RmCqKEGcQUxlqoVzURtE6xvdTuZGHnEEF2GIpMuE=; b=J4a8wIgp83GW6lrnxSkDyClNcB 4Jku+AgCeaMHqoWCI+URBOR/8MzAfeUdeCye3i3gImFGlIdaUmUkKOo+6k8jTZbyT2PrZrX9Nuwzy qlL+cHjrPRn7B/+iboSFlqUqMqJAB9vMOktmBV4SgkhgrOEDCC2uhu1WOQ0qDsDOw70IraZtKvEeF hpiUh1r2RgBOt8/ItGGXyYPiIzjJnW8aEPgFBidovIWOKoPlJi6fmrz4MvT1hcDJMrstqdDd2/NGR s7E41XOSScY+WsWWrLRRhDGazFa3OexrN/Tu/vSpzvos+BlceovYd363/i+z1LP3RDKGpKhXHR8Pj oRZbVC+roXNmcdY3aZTF6TQNAkp3tCZxD468cJAM1UOozM4Fj10Un4FRJRTcwMH24Yr67kUVMpaWa N6OW3SNPlNNt42nbu9remL3JSvcgg8IjJRJH9TthQtBXq79j708OvgYS4HDeQSSkbiP+cvTijGwnb YwBwVYOomW+OVYu4Cq+/mANGpbKNN3TGypYJYy2DiHxKnjXksD1/9rdk+E1B1voshIU8QgZOmhCH7 leZc2cHn/UdogVCieUSJ5F+dgirplUGyyCjK8twNtvu2uBMXOn7aPN7ojYjr6Z9zEduvLy0xZT11i 04drDYL/dV40cF84oAixAeQVxJzwTsvPPCA3Ql6gs=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4Q-0008jM-Jv; Fri, 12 Jan 2024 12:55:38 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:19 +0000 Message-Id: <20240112125420.514425-28-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 27/88] esp.c: update end of transfer logic at the end of esp_transfer_data() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Since esp_dma_done() is called in both cases, and ti_size cannot be zero (otherwise esp_command_complete() would have been called instead), replace the conditional logic with a single call to esp_dma_done(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 96123c5f7d..6b0811d3ce 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -925,16 +925,10 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) */ if (s->ti_cmd == (CMD_TI | CMD_DMA)) { - if (dmalen) { - esp_do_dma(s); - } else if (s->ti_size <= 0) { - /* - * If this was the last part of a DMA transfer then the - * completion interrupt is deferred to here. - */ - esp_dma_done(s); - esp_lower_drq(s); - } + /* When the SCSI layer returns more data, raise deferred INTR_BS */ + esp_dma_done(s); + + esp_do_dma(s); } else if (s->ti_cmd == CMD_TI) { esp_do_nodma(s); } From patchwork Fri Jan 12 12:53:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886025 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4U-0008jM-Ry; Fri, 12 Jan 2024 12:55:42 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:20 +0000 Message-Id: <20240112125420.514425-29-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 28/88] esp.c: consolidate async_len and TC == 0 checks in do_dma_pdma_cb() and esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Ensure that the async_len checks for requesting data from the SCSI layer and the TC == 0 checks to detect the end of the DMA transfer are consistent in both do_dma_pdma_cb() and esp_do_dma(). In particular this involves adding the check to see if the FIFO is at its low threshold since PDMA and mixed DMA and non-DMA requests can leave data remaining in the FIFO. At the same time update all the comments so that they are also consistent between all similar code paths. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 44 +++++++++++++++++++++++++++++++------------- 1 file changed, 31 insertions(+), 13 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6b0811d3ce..f20026c3dc 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -604,12 +604,13 @@ static void do_dma_pdma_cb(ESPState *s) s->async_len -= n; s->ti_size += n; - if (s->async_len == 0) { + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); return; } - if (esp_get_tc(s) == 0) { + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { esp_lower_drq(s); esp_dma_done(s); } @@ -706,24 +707,30 @@ static void esp_do_dma(ESPState *s) s->async_len -= len; s->ti_size += len; - if (s->async_len == 0) { + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); - /* - * If there is still data to be read from the device then - * complete the DMA operation immediately. Otherwise defer - * until the scsi layer has completed. - */ return; } - if (esp_get_tc(s) == 0) { - /* Partially filled a scsi buffer. Complete immediately. */ + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { esp_dma_done(s); esp_lower_drq(s); } } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); + + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + return; + } + + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { + esp_dma_done(s); + esp_lower_drq(s); + } } } else { if (s->dma_memory_write) { @@ -734,13 +741,13 @@ static void esp_do_dma(ESPState *s) s->async_len -= len; s->ti_size -= len; - if (s->async_len == 0) { + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); return; } - if (esp_get_tc(s) == 0) { - /* Partially filled a scsi buffer. Complete immediately. */ + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { esp_dma_done(s); esp_lower_drq(s); } @@ -754,6 +761,17 @@ static void esp_do_dma(ESPState *s) esp_set_tc(s, esp_get_tc(s) - len); esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); + + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + return; + } + + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { + esp_lower_drq(s); + esp_dma_done(s); + } } } } From patchwork Fri Jan 12 12:53:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886033 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=V+NoSuqZ; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4Z-0008jM-71; Fri, 12 Jan 2024 12:55:47 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:21 +0000 Message-Id: <20240112125420.514425-30-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 29/88] esp.c: fix premature end of phase logic esp_command_complete X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org There are two cases here: the first is when the TI command underflows, in which case we raise INTR_BS to indicate an early change of phase, and the second is when the TI command overflows because the host requested a transfer for more data than is available. In the latter case force TC to zero so that the TI completion logic executes correctly. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f20026c3dc..c6151d306e 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -887,7 +887,6 @@ void esp_command_complete(SCSIRequest *req, size_t resid) if (s->ti_size != 0) { trace_esp_command_complete_unexpected(); } - s->ti_size = 0; } s->async_len = 0; @@ -897,13 +896,26 @@ void esp_command_complete(SCSIRequest *req, size_t resid) s->status = req->status; /* - * If the transfer is finished, switch to status phase. For non-DMA - * transfers from the target the last byte is still in the FIFO + * Switch to status phase. For non-DMA transfers from the target the last + * byte is still in the FIFO */ + esp_set_phase(s, STAT_ST); if (s->ti_size == 0) { - esp_set_phase(s, STAT_ST); + /* + * Transfer complete: force TC to zero just in case a TI command was + * requested for more data than the command returns (Solaris 8 does + * this) + */ + esp_set_tc(s, 0); esp_dma_done(s); - esp_lower_drq(s); + } else { + /* + * Transfer truncated: raise INTR_BS to indicate early change of + * phase + */ + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + s->ti_size = 0; } if (s->current_req) { From patchwork Fri Jan 12 12:53:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886044 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=ORsMb+kA; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4d-0008jM-Gu; Fri, 12 Jan 2024 12:55:47 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:22 +0000 Message-Id: <20240112125420.514425-31-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 30/88] esp.c: move TC and FIFO check logic into esp_dma_done() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This helps simplify the existing implementation. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 39 +++++++++++---------------------------- 1 file changed, 11 insertions(+), 28 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index c6151d306e..4d58a49c73 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -545,8 +545,11 @@ static void write_response(ESPState *s) static void esp_dma_done(ESPState *s) { - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + esp_lower_drq(s); + } } static void do_dma_pdma_cb(ESPState *s) @@ -610,12 +613,7 @@ static void do_dma_pdma_cb(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_lower_drq(s); - esp_dma_done(s); - } - - return; + esp_dma_done(s); } else { if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ @@ -624,10 +622,7 @@ static void do_dma_pdma_cb(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_lower_drq(s); - esp_dma_done(s); - } + esp_dma_done(s); /* Copy device data to FIFO */ len = MIN(s->async_len, esp_get_tc(s)); @@ -713,10 +708,7 @@ static void esp_do_dma(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_dma_done(s); - esp_lower_drq(s); - } + esp_dma_done(s); } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); @@ -727,10 +719,7 @@ static void esp_do_dma(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_dma_done(s); - esp_lower_drq(s); - } + esp_dma_done(s); } } else { if (s->dma_memory_write) { @@ -747,10 +736,7 @@ static void esp_do_dma(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_dma_done(s); - esp_lower_drq(s); - } + esp_dma_done(s); } else { /* Copy device data to FIFO */ len = MIN(len, fifo8_num_free(&s->fifo)); @@ -768,10 +754,7 @@ static void esp_do_dma(ESPState *s) return; } - if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { - esp_lower_drq(s); - esp_dma_done(s); - } + esp_dma_done(s); } } } From patchwork Fri Jan 12 12:53:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886053 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=oFeUKSFS; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMG42Th7z1yPm for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is because a single DMA request can be transferred using multiple TI commands, and so a TC equal to zero may not represent the completion of the SCSI DMA command. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 4d58a49c73..14c6d05253 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -543,7 +543,7 @@ static void write_response(ESPState *s) esp_raise_irq(s); } -static void esp_dma_done(ESPState *s) +static void esp_dma_ti_check(ESPState *s) { if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { s->rregs[ESP_RINTR] |= INTR_BS; @@ -613,7 +613,7 @@ static void do_dma_pdma_cb(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); } else { if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ @@ -622,7 +622,7 @@ static void do_dma_pdma_cb(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); /* Copy device data to FIFO */ len = MIN(s->async_len, esp_get_tc(s)); @@ -708,7 +708,7 @@ static void esp_do_dma(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); } else { esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); @@ -719,7 +719,7 @@ static void esp_do_dma(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); } } else { if (s->dma_memory_write) { @@ -736,7 +736,7 @@ static void esp_do_dma(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); } else { /* Copy device data to FIFO */ len = MIN(len, fifo8_num_free(&s->fifo)); @@ -754,7 +754,7 @@ static void esp_do_dma(ESPState *s) return; } - esp_dma_done(s); + esp_dma_ti_check(s); } } } @@ -890,7 +890,7 @@ void esp_command_complete(SCSIRequest *req, size_t resid) * this) */ esp_set_tc(s, 0); - esp_dma_done(s); + esp_dma_ti_check(s); } else { /* * Transfer truncated: raise INTR_BS to indicate early change of @@ -939,7 +939,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) if (s->ti_cmd == (CMD_TI | CMD_DMA)) { /* When the SCSI layer returns more data, raise deferred INTR_BS */ - esp_dma_done(s); + esp_dma_ti_check(s); esp_do_dma(s); } else if (s->ti_cmd == CMD_TI) { From patchwork Fri Jan 12 12:53:24 2024 Content-Type: text/plain; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4i-0008jM-7m; Fri, 12 Jan 2024 12:55:56 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:24 +0000 Message-Id: <20240112125420.514425-33-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 32/88] esp.c: copy PDMA logic for transfers to device from do_dma_pdma_cb() to esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is so that PDMA transfers can be performend by esp_do_dma() as well as do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 14c6d05253..65b4baab83 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -640,6 +640,7 @@ static void esp_do_dma(ESPState *s) uint32_t len, cmdlen; int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); uint8_t buf[ESP_CMDFIFO_SZ]; + int n; len = esp_get_tc(s); if (s->do_cmd) { @@ -710,6 +711,14 @@ static void esp_do_dma(ESPState *s) esp_dma_ti_check(s); } else { + /* Copy FIFO data to device */ + len = MIN(s->async_len, ESP_FIFO_SZ); + len = MIN(len, fifo8_num_used(&s->fifo)); + n = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); + s->async_buf += n; + s->async_len -= n; + s->ti_size += n; + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); From patchwork Fri Jan 12 12:53:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886036 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4m-0008jM-H8; Fri, 12 Jan 2024 12:55:56 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:25 +0000 Message-Id: <20240112125420.514425-34-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 33/88] esp.c: copy logic for do_cmd transfers from do_dma_pdma_cb() to esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is so that PDMA transfers can be performend by esp_do_dma() as well as do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 65b4baab83..14284ef54a 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -656,9 +656,18 @@ static void esp_do_dma(ESPState *s) fifo8_push_all(&s->cmdfifo, buf, len); esp_set_tc(s, esp_get_tc(s) - len); } else { + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + esp_set_tc(s, esp_get_tc(s) - n); + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); - return; + + /* Ensure we have received complete command after SATN and stop */ + if (esp_get_tc(s) || fifo8_is_empty(&s->cmdfifo)) { + return; + } } trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; From patchwork Fri Jan 12 12:53:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886043 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4m-0008jM-UV; Fri, 12 Jan 2024 12:56:01 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:26 +0000 Message-Id: <20240112125420.514425-35-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 34/88] esp.c: update esp_do_dma() bypass if async_len is zero to include non-zero transfer check X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In the PDMA case the last transfer from the device to the FIFO has occurred (async_len is zero) but esp_do_dma() is still being called to drain the remaining FIFO contents. The additional non-zero transfer check ensures that we still defer the SCSI layer in the case where we are waiting for data for a TI command or a DMA enable signal. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 14284ef54a..9647be4cc3 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -696,7 +696,7 @@ static void esp_do_dma(ESPState *s) if (!s->current_req) { return; } - if (s->async_len == 0) { + if (s->async_len == 0 && esp_get_tc(s) && s->ti_size) { /* Defer until data is available. */ return; } From patchwork Fri Jan 12 12:53:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886034 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=r/yZxy0K; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4r-0008jM-B5; Fri, 12 Jan 2024 12:56:01 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:27 +0000 Message-Id: <20240112125420.514425-36-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 35/88] esp.c: move end of SCSI transfer check after TC adjustment in do_dma_pdma_cb() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Now it is possible to move the end of SCSI transfer check to after the TC adjustment in do_dma_pdma_cb() when transferring data from the device without triggering an assert() in the SCSI code. This brings this check in line with all the others in esp_do_dma() and do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 9647be4cc3..df4d5f8811 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -615,15 +615,6 @@ static void do_dma_pdma_cb(ESPState *s) esp_dma_ti_check(s); } else { - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - s->data_in_ready = false; - return; - } - - esp_dma_ti_check(s); - /* Copy device data to FIFO */ len = MIN(s->async_len, esp_get_tc(s)); len = MIN(len, fifo8_num_free(&s->fifo)); @@ -632,6 +623,15 @@ static void do_dma_pdma_cb(ESPState *s) s->async_len -= len; s->ti_size -= len; esp_set_tc(s, esp_get_tc(s) - len); + + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + s->data_in_ready = false; + return; + } + + esp_dma_ti_check(s); } } From patchwork Fri Jan 12 12:53:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886057 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=TGGXW08p; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGH0Rs5z1yPm for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This can now be handled by the existing do_dma_pdma_cb() function. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 22 +--------------------- include/hw/scsi/esp.h | 1 - 2 files changed, 1 insertion(+), 22 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index df4d5f8811..16cb6c72fd 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -408,23 +408,6 @@ static void handle_satn(ESPState *s) } } -static void s_without_satn_pdma_cb(ESPState *s) -{ - uint8_t buf[ESP_FIFO_SZ]; - int n; - - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - - if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { - s->cmdfifo_cdb_offset = 0; - s->do_cmd = 0; - do_cmd(s); - } -} - static void handle_s_without_atn(ESPState *s) { int32_t cmdlen; @@ -433,7 +416,7 @@ static void handle_s_without_atn(ESPState *s) s->dma_cb = handle_s_without_atn; return; } - esp_set_pdma_cb(s, S_WITHOUT_SATN_PDMA_CB); + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); if (esp_select(s) < 0) { return; } @@ -856,9 +839,6 @@ static void esp_pdma_cb(ESPState *s) case SATN_PDMA_CB: satn_pdma_cb(s); break; - case S_WITHOUT_SATN_PDMA_CB: - s_without_satn_pdma_cb(s); - break; case SATN_STOP_PDMA_CB: satn_stop_pdma_cb(s); break; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 13b17496f8..b727181da9 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -153,7 +153,6 @@ struct SysBusESPState { /* PDMA callbacks */ enum pdma_cb { SATN_PDMA_CB = 0, - S_WITHOUT_SATN_PDMA_CB = 1, SATN_STOP_PDMA_CB = 2, WRITE_RESPONSE_PDMA_CB = 3, DO_DMA_PDMA_CB = 4 From patchwork Fri Jan 12 12:53:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886048 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=mN2iFGGP; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH4w-0008jM-Dd; Fri, 12 Jan 2024 12:56:10 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:29 +0000 Message-Id: <20240112125420.514425-38-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 37/88] esp.c: introduce esp_get_phase() function X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Make use of this new function in all places where the SCSI phase bits are manually masked from the ESP_RSTAT register. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé --- hw/scsi/esp.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 16cb6c72fd..de8d98082a 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -196,6 +196,11 @@ static void esp_set_phase(ESPState *s, uint8_t phase) trace_esp_set_phase(esp_phase_names[phase]); } +static uint8_t esp_get_phase(ESPState *s) +{ + return s->rregs[ESP_RSTAT] & 7; +} + static uint8_t esp_pdma_read(ESPState *s) { uint8_t val; @@ -537,7 +542,7 @@ static void esp_dma_ti_check(ESPState *s) static void do_dma_pdma_cb(ESPState *s) { - int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_CMDFIFO_SZ]; int len; uint32_t n; @@ -554,7 +559,7 @@ static void do_dma_pdma_cb(ESPState *s) } s->ti_size = 0; - if ((s->rregs[ESP_RSTAT] & 7) == STAT_CD) { + if (esp_get_phase(s) == STAT_CD) { /* No command received */ if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { return; @@ -621,7 +626,7 @@ static void do_dma_pdma_cb(ESPState *s) static void esp_do_dma(ESPState *s) { uint32_t len, cmdlen; - int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_CMDFIFO_SZ]; int n; @@ -654,7 +659,7 @@ static void esp_do_dma(ESPState *s) } trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; - if ((s->rregs[ESP_RSTAT] & 7) == STAT_CD) { + if (esp_get_phase(s) == STAT_CD) { /* No command received */ if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { return; @@ -762,7 +767,7 @@ static void esp_do_dma(ESPState *s) static void esp_do_nodma(ESPState *s) { - int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_FIFO_SZ]; uint32_t cmdlen; int len, n; @@ -776,7 +781,7 @@ static void esp_do_nodma(ESPState *s) cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; - if ((s->rregs[ESP_RSTAT] & 7) == STAT_CD) { + if (esp_get_phase(s) == STAT_CD) { /* No command received */ if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { return; @@ -856,7 +861,7 @@ static void esp_pdma_cb(ESPState *s) void esp_command_complete(SCSIRequest *req, size_t resid) { ESPState *s = req->hba_private; - int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + int to_device = (esp_get_phase(s) == STAT_DO); trace_esp_command_complete(); @@ -909,7 +914,7 @@ void esp_command_complete(SCSIRequest *req, size_t resid) void esp_transfer_data(SCSIRequest *req, uint32_t len) { ESPState *s = req->hba_private; - int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO); + int to_device = (esp_get_phase(s) == STAT_DO); uint32_t dmalen = esp_get_tc(s); assert(!s->do_cmd); @@ -1103,7 +1108,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) qemu_log_mask(LOG_UNIMP, "esp: PIO data read not implemented\n"); s->rregs[ESP_FIFO] = 0; } else { - if ((s->rregs[ESP_RSTAT] & 0x7) == STAT_DI) { + if (esp_get_phase(s) == STAT_DI) { if (s->ti_size) { esp_do_nodma(s); } else { From patchwork Fri Jan 12 12:53:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886035 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH50-0008jM-LW; Fri, 12 Jan 2024 12:56:14 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:30 +0000 Message-Id: <20240112125420.514425-39-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 38/88] esp.c: convert esp_do_dma() to switch statement based upon SCSI phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently only the DATA IN and DATA OUT phases are supported. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 40 +++++++++++++++++++++++++++------------- 1 file changed, 27 insertions(+), 13 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index de8d98082a..67d1d39db2 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -626,7 +626,6 @@ static void do_dma_pdma_cb(ESPState *s) static void esp_do_dma(ESPState *s) { uint32_t len, cmdlen; - int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_CMDFIFO_SZ]; int n; @@ -681,17 +680,19 @@ static void esp_do_dma(ESPState *s) } return; } - if (!s->current_req) { - return; - } - if (s->async_len == 0 && esp_get_tc(s) && s->ti_size) { - /* Defer until data is available. */ - return; - } - if (len > s->async_len) { - len = s->async_len; - } - if (to_device) { + + switch (esp_get_phase(s)) { + case STAT_DO: + if (!s->current_req) { + return; + } + if (s->async_len == 0 && esp_get_tc(s) && s->ti_size) { + /* Defer until data is available. */ + return; + } + if (len > s->async_len) { + len = s->async_len; + } if (s->dma_memory_read) { s->dma_memory_read(s->dma_opaque, s->async_buf, len); @@ -727,7 +728,19 @@ static void esp_do_dma(ESPState *s) esp_dma_ti_check(s); } - } else { + break; + + case STAT_DI: + if (!s->current_req) { + return; + } + if (s->async_len == 0 && esp_get_tc(s) && s->ti_size) { + /* Defer until data is available. */ + return; + } + if (len > s->async_len) { + len = s->async_len; + } if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, s->async_buf, len); @@ -762,6 +775,7 @@ static void esp_do_dma(ESPState *s) esp_dma_ti_check(s); } + break; } } From patchwork Fri Jan 12 12:53:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886055 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=Qkszo023; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH54-0008jM-V9; Fri, 12 Jan 2024 12:56:15 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:31 +0000 Message-Id: <20240112125420.514425-40-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 39/88] esp.c: convert do_dma_pdma_db() to switch statement based upon SCSI phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; 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Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 67d1d39db2..f6d05b0de7 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -542,7 +542,6 @@ static void esp_dma_ti_check(ESPState *s) static void do_dma_pdma_cb(ESPState *s) { - int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_CMDFIFO_SZ]; int len; uint32_t n; @@ -582,11 +581,11 @@ static void do_dma_pdma_cb(ESPState *s) return; } - if (!s->current_req) { - return; - } - - if (to_device) { + switch (esp_get_phase(s)) { + case STAT_DO: + if (!s->current_req) { + return; + } /* Copy FIFO data to device */ len = MIN(s->async_len, ESP_FIFO_SZ); len = MIN(len, fifo8_num_used(&s->fifo)); @@ -602,7 +601,12 @@ static void do_dma_pdma_cb(ESPState *s) } esp_dma_ti_check(s); - } else { + break; + + case STAT_DI: + if (!s->current_req) { + return; + } /* Copy device data to FIFO */ len = MIN(s->async_len, esp_get_tc(s)); len = MIN(len, fifo8_num_free(&s->fifo)); @@ -620,6 +624,7 @@ static void do_dma_pdma_cb(ESPState *s) } esp_dma_ti_check(s); + break; } } From patchwork Fri Jan 12 12:53:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886032 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=ls6c6+Hn; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBM8q0mkQz1yP3 for ; 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Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 54 +++++++++++++++++++++++++++++++++------------------ 1 file changed, 35 insertions(+), 19 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f6d05b0de7..c1b44e5f18 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -786,7 +786,6 @@ static void esp_do_dma(ESPState *s) static void esp_do_nodma(ESPState *s) { - int to_device = (esp_get_phase(s) == STAT_DO); uint8_t buf[ESP_FIFO_SZ]; uint32_t cmdlen; int len, n; @@ -823,38 +822,55 @@ static void esp_do_nodma(ESPState *s) return; } - if (!s->current_req) { - return; - } - - if (s->async_len == 0) { - /* Defer until data is available. */ - return; - } - - if (to_device) { + switch (esp_get_phase(s)) { + case STAT_DO: + if (!s->current_req) { + return; + } + if (s->async_len == 0) { + /* Defer until data is available. */ + return; + } len = MIN(s->async_len, ESP_FIFO_SZ); len = MIN(len, fifo8_num_used(&s->fifo)); esp_fifo_pop_buf(&s->fifo, s->async_buf, len); s->async_buf += len; s->async_len -= len; s->ti_size += len; - } else { + + if (s->async_len == 0) { + scsi_req_continue(s->current_req); + return; + } + + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + + case STAT_DI: + if (!s->current_req) { + return; + } + if (s->async_len == 0) { + /* Defer until data is available. */ + return; + } if (fifo8_is_empty(&s->fifo)) { fifo8_push(&s->fifo, s->async_buf[0]); s->async_buf++; s->async_len--; s->ti_size--; } - } - if (s->async_len == 0) { - scsi_req_continue(s->current_req); - return; - } + if (s->async_len == 0) { + scsi_req_continue(s->current_req); + return; + } - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + } } static void esp_pdma_cb(ESPState *s) From patchwork Fri Jan 12 12:53:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886075 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH55-0008jM-PE; Fri, 12 Jan 2024 12:56:19 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:33 +0000 Message-Id: <20240112125420.514425-42-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 41/88] esp.c: convert esp_do_dma() do_cmd path to check for SCSI phase instead X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently do_cmd is used to determine whether MESSAGE OUT and COMMAND phase data is being accumulated in cmdfifo. Update esp_do_dma() to check directly for these two SCSI phases instead. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index c1b44e5f18..22739d3875 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -635,11 +635,10 @@ static void esp_do_dma(ESPState *s) int n; len = esp_get_tc(s); - if (s->do_cmd) { - /* - * handle_ti_cmd() case: esp_do_dma() is called only from - * handle_ti_cmd() with do_cmd != NULL (see the assert()) - */ + + switch (esp_get_phase(s)) { + case STAT_MO: + case STAT_CD: cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_do_dma(cmdlen, len); if (s->dma_memory_read) { @@ -683,10 +682,8 @@ static void esp_do_dma(ESPState *s) s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } - return; - } + break; - switch (esp_get_phase(s)) { case STAT_DO: if (!s->current_req) { return; From patchwork Fri Jan 12 12:53:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886051 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5A-0008jM-2j; Fri, 12 Jan 2024 12:56:20 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:34 +0000 Message-Id: <20240112125420.514425-43-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 42/88] esp.c: convert do_dma_pdma_cb() do_cmd path to check for SCSI phase instead X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently do_cmd is used to determine whether MESSAGE OUT and COMMAND phase data is being accumulated in cmdfifo. Update esp_do_dma() to check directly for these two SCSI phases instead. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 22739d3875..b48e020689 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -546,7 +546,9 @@ static void do_dma_pdma_cb(ESPState *s) int len; uint32_t n; - if (s->do_cmd) { + switch (esp_get_phase(s)) { + case STAT_MO: + case STAT_CD: /* Copy FIFO into cmdfifo */ n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); n = MIN(fifo8_num_free(&s->cmdfifo), n); @@ -578,10 +580,8 @@ static void do_dma_pdma_cb(ESPState *s) s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } - return; - } + break; - switch (esp_get_phase(s)) { case STAT_DO: if (!s->current_req) { return; From patchwork Fri Jan 12 12:53:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886069 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5A-0008jM-G1; Fri, 12 Jan 2024 12:56:24 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:35 +0000 Message-Id: <20240112125420.514425-44-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 43/88] esp.c: convert esp_do_nodma() do_cmd path to check for SCSI phase instead X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently do_cmd is used to determine whether MESSAGE OUT and COMMAND phase data is being accumulated in cmdfifo. Update esp_do_dma() to check directly for these two SCSI phases instead. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index b48e020689..14759ada78 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -787,7 +787,9 @@ static void esp_do_nodma(ESPState *s) uint32_t cmdlen; int len, n; - if (s->do_cmd) { + switch (esp_get_phase(s)) { + case STAT_MO: + case STAT_CD: /* Copy FIFO into cmdfifo */ n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); n = MIN(fifo8_num_free(&s->cmdfifo), n); @@ -816,10 +818,8 @@ static void esp_do_nodma(ESPState *s) s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } - return; - } + break; - switch (esp_get_phase(s)) { case STAT_DO: if (!s->current_req) { return; From patchwork Fri Jan 12 12:53:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886081 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5E-0008jM-PX; Fri, 12 Jan 2024 12:56:28 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:36 +0000 Message-Id: <20240112125420.514425-45-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 44/88] esp.c: convert esp_reg_write() do_cmd path to check for SCSI phase instead X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently do_cmd is used to determine whether MESSAGE OUT and COMMAND phase data is being accumulated in cmdfifo. Update esp_do_dma() to check directly for these two SCSI phases instead. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 14759ada78..e679b1c39b 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1207,7 +1207,7 @@ void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) s->rregs[ESP_RSTAT] &= ~STAT_TC; break; case ESP_FIFO: - if (s->do_cmd) { + if (esp_get_phase(s) == STAT_MO || esp_get_phase(s) == STAT_CD) { if (!fifo8_is_full(&s->fifo)) { esp_fifo_push(&s->fifo, val); esp_fifo_push(&s->cmdfifo, fifo8_pop(&s->fifo)); From patchwork Fri Jan 12 12:53:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886039 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=yLvU3lh5; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5I-0008jM-W0; Fri, 12 Jan 2024 12:56:31 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:37 +0000 Message-Id: <20240112125420.514425-46-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 45/88] esp.c: remove do_cmd from ESPState X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Now that the accumulation of the CDB is handled by SCSI phase, there is no need for a separate variable to control it. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index e679b1c39b..1f7dff4ca6 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -380,7 +380,6 @@ static void satn_pdma_cb(ESPState *s) if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { s->cmdfifo_cdb_offset = 1; - s->do_cmd = 0; do_cmd(s); } } @@ -400,13 +399,11 @@ static void handle_satn(ESPState *s) cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); if (cmdlen > 0) { s->cmdfifo_cdb_offset = 1; - s->do_cmd = 0; do_cmd(s); } else if (cmdlen == 0) { if (s->dma) { esp_raise_drq(s); } - s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; esp_set_phase(s, STAT_CD); @@ -428,13 +425,11 @@ static void handle_s_without_atn(ESPState *s) cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); if (cmdlen > 0) { s->cmdfifo_cdb_offset = 0; - s->do_cmd = 0; do_cmd(s); } else if (cmdlen == 0) { if (s->dma) { esp_raise_drq(s); } - s->do_cmd = 1; /* Target present, but no cmd yet - switch to command phase */ s->rregs[ESP_RSEQ] = SEQ_CD; esp_set_phase(s, STAT_CD); @@ -453,7 +448,6 @@ static void satn_stop_pdma_cb(ESPState *s) if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); - s->do_cmd = 1; s->cmdfifo_cdb_offset = 1; esp_set_phase(s, STAT_CD); s->rregs[ESP_RSTAT] |= STAT_TC; @@ -478,7 +472,6 @@ static void handle_satn_stop(ESPState *s) cmdlen = get_cmd(s, 1); if (cmdlen > 0) { trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); - s->do_cmd = 1; s->cmdfifo_cdb_offset = 1; esp_set_phase(s, STAT_MO); s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; @@ -488,7 +481,6 @@ static void handle_satn_stop(ESPState *s) if (s->dma) { esp_raise_drq(s); } - s->do_cmd = 1; /* Target present, switch to message out phase */ s->rregs[ESP_RSEQ] = SEQ_MO; esp_set_phase(s, STAT_MO); @@ -567,7 +559,6 @@ static void do_dma_pdma_cb(ESPState *s) } /* Command has been received */ - s->do_cmd = 0; do_cmd(s); } else { /* @@ -669,7 +660,6 @@ static void esp_do_dma(ESPState *s) } /* Command has been received */ - s->do_cmd = 0; do_cmd(s); } else { /* @@ -805,7 +795,6 @@ static void esp_do_nodma(ESPState *s) } /* Command has been received */ - s->do_cmd = 0; do_cmd(s); } else { /* @@ -949,7 +938,6 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) int to_device = (esp_get_phase(s) == STAT_DO); uint32_t dmalen = esp_get_tc(s); - assert(!s->do_cmd); trace_esp_transfer_data(dmalen, s->ti_size); s->async_len = len; s->async_buf = scsi_req_get_buf(req); @@ -1012,7 +1000,6 @@ void esp_hard_reset(ESPState *s) fifo8_reset(&s->fifo); fifo8_reset(&s->cmdfifo); s->dma = 0; - s->do_cmd = 0; s->dma_cb = NULL; s->rregs[ESP_CFG1] = 7; From patchwork Fri Jan 12 12:53:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886037 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5L-0008jM-Le; Fri, 12 Jan 2024 12:56:35 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:38 +0000 Message-Id: <20240112125420.514425-47-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 46/88] esp.c: untangle MESSAGE OUT and COMMAND phase logic in esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This makes it clearer that ATN is asserted until the end of the next TI command in the MESSAGE OUT phase. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 48 ++++++++++++++++++++++++++---------------------- 1 file changed, 26 insertions(+), 22 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 1f7dff4ca6..2f54fd1285 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -629,6 +629,31 @@ static void esp_do_dma(ESPState *s) switch (esp_get_phase(s)) { case STAT_MO: + if (s->dma_memory_read) { + len = MIN(len, fifo8_num_free(&s->cmdfifo)); + s->dma_memory_read(s->dma_opaque, buf, len); + fifo8_push_all(&s->cmdfifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + s->cmdfifo_cdb_offset += len; + } else { + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + s->cmdfifo_cdb_offset += n; + } + + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + esp_raise_drq(s); + + /* ATN remains asserted until TC == 0 */ + if (esp_get_tc(s) == 0) { + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + } + break; + case STAT_CD: cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_do_dma(cmdlen, len); @@ -641,36 +666,15 @@ static void esp_do_dma(ESPState *s) n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); n = MIN(fifo8_num_free(&s->cmdfifo), n); fifo8_push_all(&s->cmdfifo, buf, n); - esp_set_tc(s, esp_get_tc(s) - n); esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); - - /* Ensure we have received complete command after SATN and stop */ - if (esp_get_tc(s) || fifo8_is_empty(&s->cmdfifo)) { - return; - } } trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; - if (esp_get_phase(s) == STAT_CD) { - /* No command received */ - if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { - return; - } - + if (esp_get_tc(s) == 0) { /* Command has been received */ do_cmd(s); - } else { - /* - * Extra message out bytes received: update cmdfifo_cdb_offset - * and then switch to command phase - */ - s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); } break; From patchwork Fri Jan 12 12:53:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886045 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=yEIaaMJ7; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMCf5WYpz1yP3 for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This makes it clearer that ATN is asserted until the end of the next TI command in the MESSAGE OUT phase. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 66 ++++++++++++++++++++++++++++++++------------------- 1 file changed, 42 insertions(+), 24 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 2f54fd1285..7ab195f884 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -536,36 +536,30 @@ static void do_dma_pdma_cb(ESPState *s) { uint8_t buf[ESP_CMDFIFO_SZ]; int len; - uint32_t n; + uint32_t n, cmdlen; + + len = esp_get_tc(s); switch (esp_get_phase(s)) { case STAT_MO: - case STAT_CD: - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - - /* Ensure we have received complete command after SATN and stop */ - if (esp_get_tc(s) || fifo8_is_empty(&s->cmdfifo)) { - return; + if (s->dma_memory_read) { + len = MIN(len, fifo8_num_free(&s->cmdfifo)); + s->dma_memory_read(s->dma_opaque, buf, len); + fifo8_push_all(&s->cmdfifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + s->cmdfifo_cdb_offset += len; + } else { + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + s->cmdfifo_cdb_offset += n; } - s->ti_size = 0; - if (esp_get_phase(s) == STAT_CD) { - /* No command received */ - if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { - return; - } + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + esp_raise_drq(s); - /* Command has been received */ - do_cmd(s); - } else { - /* - * Extra message out bytes received: update cmdfifo_cdb_offset - * and then switch to command phase - */ - s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); + /* ATN remains asserted until TC == 0 */ + if (esp_get_tc(s) == 0) { esp_set_phase(s, STAT_CD); s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; @@ -573,6 +567,30 @@ static void do_dma_pdma_cb(ESPState *s) } break; + case STAT_CD: + cmdlen = fifo8_num_used(&s->cmdfifo); + trace_esp_do_dma(cmdlen, len); + if (s->dma_memory_read) { + len = MIN(len, fifo8_num_free(&s->cmdfifo)); + s->dma_memory_read(s->dma_opaque, buf, len); + fifo8_push_all(&s->cmdfifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } else { + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + esp_raise_drq(s); + } + trace_esp_handle_ti_cmd(cmdlen); + s->ti_size = 0; + if (esp_get_tc(s) == 0) { + /* Command has been received */ + do_cmd(s); + } + break; + case STAT_DO: if (!s->current_req) { return; From patchwork Fri Jan 12 12:53:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886108 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=A2XS3h9s; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5U-0008jM-1f; Fri, 12 Jan 2024 12:56:44 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:40 +0000 Message-Id: <20240112125420.514425-49-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 48/88] esp.c: untangle MESSAGE OUT and COMMAND phase logic in esp_do_nodma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This makes it clearer that ATN is asserted until the end of the next TI command in the MESSAGE OUT phase. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 40 +++++++++++++++++++++++----------------- 1 file changed, 23 insertions(+), 17 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 7ab195f884..81144ace83 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -801,6 +801,23 @@ static void esp_do_nodma(ESPState *s) switch (esp_get_phase(s)) { case STAT_MO: + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + s->cmdfifo_cdb_offset += n; + + /* + * Extra message out bytes received: update cmdfifo_cdb_offset + * and then switch to command phase + */ + s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + case STAT_CD: /* Copy FIFO into cmdfifo */ n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); @@ -810,25 +827,14 @@ static void esp_do_nodma(ESPState *s) cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_handle_ti_cmd(cmdlen); s->ti_size = 0; - if (esp_get_phase(s) == STAT_CD) { - /* No command received */ - if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { - return; - } - /* Command has been received */ - do_cmd(s); - } else { - /* - * Extra message out bytes received: update cmdfifo_cdb_offset - * and then switch to command phase - */ - s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + /* No command received */ + if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { + return; } + + /* Command has been received */ + do_cmd(s); break; case STAT_DO: From patchwork Fri Jan 12 12:53:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886073 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5Y-0008jM-BP; Fri, 12 Jan 2024 12:56:44 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:41 +0000 Message-Id: <20240112125420.514425-50-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 49/88] esp.c: move CMD_SELATN end of message phase detection to esp_do_dma() and do_dma_pdma_cb() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The special logic in satn_pdma_cb() is now no longer required since esp_do_dma() can be used as a direct replacement. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 75 +++++++++++++++++++++++++------------------ include/hw/scsi/esp.h | 1 - 2 files changed, 43 insertions(+), 33 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 81144ace83..f8c20d0584 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -261,6 +261,9 @@ static int esp_select(ESPState *s) return 0; } +static void esp_do_dma(ESPState *s); +static void esp_do_nodma(ESPState *s); + static uint32_t get_cmd(ESPState *s, uint32_t maxlen) { uint8_t buf[ESP_CMDFIFO_SZ]; @@ -368,45 +371,26 @@ static void do_cmd(ESPState *s) do_command_phase(s); } -static void satn_pdma_cb(ESPState *s) -{ - uint8_t buf[ESP_FIFO_SZ]; - int n; - - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - - if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { - s->cmdfifo_cdb_offset = 1; - do_cmd(s); - } -} - static void handle_satn(ESPState *s) { - int32_t cmdlen; - if (s->dma && !s->dma_enabled) { s->dma_cb = handle_satn; return; } - esp_set_pdma_cb(s, SATN_PDMA_CB); + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); if (esp_select(s) < 0) { return; } - cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); - if (cmdlen > 0) { - s->cmdfifo_cdb_offset = 1; - do_cmd(s); - } else if (cmdlen == 0) { - if (s->dma) { - esp_raise_drq(s); + + esp_set_phase(s, STAT_MO); + + if (s->dma) { + esp_do_dma(s); + } else { + if (get_cmd(s, ESP_CMDFIFO_SZ)) { + s->cmdfifo_cdb_offset = 1; + do_cmd(s); } - /* Target present, but no cmd yet - switch to command phase */ - s->rregs[ESP_RSEQ] = SEQ_CD; - esp_set_phase(s, STAT_CD); } } @@ -558,6 +542,21 @@ static void do_dma_pdma_cb(ESPState *s) esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); + switch (s->rregs[ESP_CMD]) { + case CMD_SELATN | CMD_DMA: + if (fifo8_num_used(&s->cmdfifo) >= 1) { + /* First byte received, switch to command phase */ + esp_set_phase(s, STAT_CD); + s->cmdfifo_cdb_offset = 1; + + if (fifo8_num_used(&s->cmdfifo) > 1) { + /* Process any additional command phase data */ + esp_do_dma(s); + } + } + break; + } + /* ATN remains asserted until TC == 0 */ if (esp_get_tc(s) == 0) { esp_set_phase(s, STAT_CD); @@ -663,6 +662,21 @@ static void esp_do_dma(ESPState *s) esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); + switch (s->rregs[ESP_CMD]) { + case CMD_SELATN | CMD_DMA: + if (fifo8_num_used(&s->cmdfifo) >= 1) { + /* First byte received, switch to command phase */ + esp_set_phase(s, STAT_CD); + s->cmdfifo_cdb_offset = 1; + + if (fifo8_num_used(&s->cmdfifo) > 1) { + /* Process any additional command phase data */ + esp_do_dma(s); + } + } + break; + } + /* ATN remains asserted until TC == 0 */ if (esp_get_tc(s) == 0) { esp_set_phase(s, STAT_CD); @@ -890,9 +904,6 @@ static void esp_do_nodma(ESPState *s) static void esp_pdma_cb(ESPState *s) { switch (s->pdma_cb) { - case SATN_PDMA_CB: - satn_pdma_cb(s); - break; case SATN_STOP_PDMA_CB: satn_stop_pdma_cb(s); break; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index b727181da9..9945645837 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -152,7 +152,6 @@ struct SysBusESPState { /* PDMA callbacks */ enum pdma_cb { - SATN_PDMA_CB = 0, SATN_STOP_PDMA_CB = 2, WRITE_RESPONSE_PDMA_CB = 3, DO_DMA_PDMA_CB = 4 From patchwork Fri Jan 12 12:53:42 2024 Content-Type: text/plain; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5Y-0008jM-Ry; Fri, 12 Jan 2024 12:56:48 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:42 +0000 Message-Id: <20240112125420.514425-51-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 50/88] esp.c: move CMD_TI end of message phase detection to esp_do_dma() and do_dma_pdma_cb() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The existing check for TC == 0 is only valid during a TI command. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 32 ++++++++++++++++++-------------- 1 file changed, 18 insertions(+), 14 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f8c20d0584..9f787d12a8 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -555,14 +555,16 @@ static void do_dma_pdma_cb(ESPState *s) } } break; - } - /* ATN remains asserted until TC == 0 */ - if (esp_get_tc(s) == 0) { - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + case CMD_TI | CMD_DMA: + /* ATN remains asserted until TC == 0 */ + if (esp_get_tc(s) == 0) { + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + } + break; } break; @@ -675,14 +677,16 @@ static void esp_do_dma(ESPState *s) } } break; - } - /* ATN remains asserted until TC == 0 */ - if (esp_get_tc(s) == 0) { - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + case CMD_TI | CMD_DMA: + /* ATN remains asserted until TC == 0 */ + if (esp_get_tc(s) == 0) { + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + } + break; } break; From patchwork Fri Jan 12 12:53:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886054 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=l4noEbJp; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5d-0008jM-5H; Fri, 12 Jan 2024 12:56:49 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:43 +0000 Message-Id: <20240112125420.514425-52-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 51/88] esp.c: don't use get_cmd() for CMD_SEL DMA commands X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This can now be done using the existing logic in esp_do_dma() and do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 9f787d12a8..3cf8b2b4eb 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -396,8 +396,6 @@ static void handle_satn(ESPState *s) static void handle_s_without_atn(ESPState *s) { - int32_t cmdlen; - if (s->dma && !s->dma_enabled) { s->dma_cb = handle_s_without_atn; return; @@ -406,17 +404,17 @@ static void handle_s_without_atn(ESPState *s) if (esp_select(s) < 0) { return; } - cmdlen = get_cmd(s, ESP_CMDFIFO_SZ); - if (cmdlen > 0) { - s->cmdfifo_cdb_offset = 0; - do_cmd(s); - } else if (cmdlen == 0) { - if (s->dma) { - esp_raise_drq(s); + + esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; + s->cmdfifo_cdb_offset = 0; + + if (s->dma) { + esp_do_dma(s); + } else { + if (get_cmd(s, ESP_CMDFIFO_SZ)) { + do_cmd(s); } - /* Target present, but no cmd yet - switch to command phase */ - s->rregs[ESP_RSEQ] = SEQ_CD; - esp_set_phase(s, STAT_CD); } } From patchwork Fri Jan 12 12:53:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886092 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=X/WXD1dI; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMNl3H1nz1yPy for ; 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bh=metDBkUl6dTkUgNCecnTDKJZsWyDSk6gx8iev0W1uCQ=; b=X/WXD1dIpBq8I4F2lg79t7rK3A jPucSr27fhhmyUj9T/pTuYno8jGCh1W4yzQoSxGPYRbg8EsJ4R84eRckKdE9bjuEBRDEIEleYptEu KPjpx12e9JGanthTLw1+GvZsu6pKXP+yzkiOiktJl2A417SDWf/UX/QTpa3az7/tdrszhErPoSgHa fxAGDu837XOdw1Gt3uWwtUpxkO/MhnntxXcUIDk5YYXO+RNbP/0JwKGESR6bQVXJTIzQyLljOfn2L agDd/TFE/MLdoIXcWYdtjhHFNnBjRw9pVa/MqnDwUunoOnIa4lr0ZD2kDV2SSJfZA+ocCn2AGwig6 VbYLQSkevFpkUmWpiyDF/z7tpYZQcFpXqjOXx/OaMivrUbqKMgdR2h/v35UC1qLyp3/AXIf92g0h4 HdNjqtraq0CbI+Ak7k37Ng7J9E8fO28QaztzTh01UG3+WC422XtsFRGlKw7YSUs+Prb7uKi1RRuAf W5wwj2BEQoTzwqTi8jzuAtDmALKivayo0mDVLycJxFxDTwSERtAp+5G53dRpsdYZpH8rCiXGQxq3j fP8q2wwC6LRSaqhu3qK9QAh3zYPEzwHPsikJ65FEJKpC7M3FCy6BgFoFmLTyPFjhPaV3OGC63NdPl M645jSAAs4LHg3SOdxKoyD5qylcfL8k6Oha+awHL0=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5d-0008jM-IZ; Fri, 12 Jan 2024 12:56:53 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:44 +0000 Message-Id: <20240112125420.514425-53-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 52/88] esp.c: move CMD_SELATNS end of command logic to esp_do_dma() and do_dma_pdma_cb() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The special logic in satn_stop_pdma_cb() is now no longer required since esp_do_dma() can be used as a direct replacement. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 82 +++++++++++++++++++++---------------------- include/hw/scsi/esp.h | 1 - 2 files changed, 41 insertions(+), 42 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 3cf8b2b4eb..29e3869173 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -418,54 +418,31 @@ static void handle_s_without_atn(ESPState *s) } } -static void satn_stop_pdma_cb(ESPState *s) -{ - uint8_t buf[ESP_FIFO_SZ]; - int n; - - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - - if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) { - trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); - s->cmdfifo_cdb_offset = 1; - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSTAT] |= STAT_TC; - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; - esp_raise_irq(s); - } -} - static void handle_satn_stop(ESPState *s) { - int32_t cmdlen; - if (s->dma && !s->dma_enabled) { s->dma_cb = handle_satn_stop; return; } - esp_set_pdma_cb(s, SATN_STOP_PDMA_CB); + esp_set_pdma_cb(s, DO_DMA_PDMA_CB); if (esp_select(s) < 0) { return; } - cmdlen = get_cmd(s, 1); - if (cmdlen > 0) { - trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); - s->cmdfifo_cdb_offset = 1; - esp_set_phase(s, STAT_MO); - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_MO; - esp_raise_irq(s); - } else if (cmdlen == 0) { - if (s->dma) { - esp_raise_drq(s); + + esp_set_phase(s, STAT_MO); + s->rregs[ESP_RSEQ] = SEQ_MO; + + if (s->dma) { + esp_do_dma(s); + } else { + if (get_cmd(s, 1)) { + trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); + + /* Raise command completion interrupt */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_MO; + esp_raise_irq(s); } - /* Target present, switch to message out phase */ - s->rregs[ESP_RSEQ] = SEQ_MO; - esp_set_phase(s, STAT_MO); } } @@ -554,6 +531,19 @@ static void do_dma_pdma_cb(ESPState *s) } break; + case CMD_SELATNS | CMD_DMA: + if (fifo8_num_used(&s->cmdfifo) == 1) { + /* First byte received, stop in message out phase */ + esp_set_phase(s, STAT_CD); + s->cmdfifo_cdb_offset = 1; + + /* Raise command completion interrupt */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_CD; + esp_raise_irq(s); + } + break; + case CMD_TI | CMD_DMA: /* ATN remains asserted until TC == 0 */ if (esp_get_tc(s) == 0) { @@ -676,6 +666,19 @@ static void esp_do_dma(ESPState *s) } break; + case CMD_SELATNS | CMD_DMA: + if (fifo8_num_used(&s->cmdfifo) == 1) { + /* First byte received, stop in message out phase */ + esp_set_phase(s, STAT_CD); + s->cmdfifo_cdb_offset = 1; + + /* Raise command completion interrupt */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_CD; + esp_raise_irq(s); + } + break; + case CMD_TI | CMD_DMA: /* ATN remains asserted until TC == 0 */ if (esp_get_tc(s) == 0) { @@ -906,9 +909,6 @@ static void esp_do_nodma(ESPState *s) static void esp_pdma_cb(ESPState *s) { switch (s->pdma_cb) { - case SATN_STOP_PDMA_CB: - satn_stop_pdma_cb(s); - break; case WRITE_RESPONSE_PDMA_CB: write_response_pdma_cb(s); break; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 9945645837..a4b2ed115c 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -152,7 +152,6 @@ struct SysBusESPState { /* PDMA callbacks */ enum pdma_cb { - SATN_STOP_PDMA_CB = 2, WRITE_RESPONSE_PDMA_CB = 3, DO_DMA_PDMA_CB = 4 }; From patchwork Fri Jan 12 12:53:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886046 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=Ac0ZSsnQ; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5h-0008jM-SM; Fri, 12 Jan 2024 12:56:54 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:45 +0000 Message-Id: <20240112125420.514425-54-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 53/88] esp.c: replace do_dma_pdma_cb() with esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Now that the DMA logic is identical between do_dma_pdma_cb() and esp_do_dma() we can replace do_dma_pdma_cb() with esp_do_dma(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 138 +------------------------------------------------- 1 file changed, 1 insertion(+), 137 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 29e3869173..f69b2709fc 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -491,141 +491,6 @@ static void esp_dma_ti_check(ESPState *s) } } -static void do_dma_pdma_cb(ESPState *s) -{ - uint8_t buf[ESP_CMDFIFO_SZ]; - int len; - uint32_t n, cmdlen; - - len = esp_get_tc(s); - - switch (esp_get_phase(s)) { - case STAT_MO: - if (s->dma_memory_read) { - len = MIN(len, fifo8_num_free(&s->cmdfifo)); - s->dma_memory_read(s->dma_opaque, buf, len); - fifo8_push_all(&s->cmdfifo, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); - s->cmdfifo_cdb_offset += len; - } else { - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - s->cmdfifo_cdb_offset += n; - } - - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); - esp_raise_drq(s); - - switch (s->rregs[ESP_CMD]) { - case CMD_SELATN | CMD_DMA: - if (fifo8_num_used(&s->cmdfifo) >= 1) { - /* First byte received, switch to command phase */ - esp_set_phase(s, STAT_CD); - s->cmdfifo_cdb_offset = 1; - - if (fifo8_num_used(&s->cmdfifo) > 1) { - /* Process any additional command phase data */ - esp_do_dma(s); - } - } - break; - - case CMD_SELATNS | CMD_DMA: - if (fifo8_num_used(&s->cmdfifo) == 1) { - /* First byte received, stop in message out phase */ - esp_set_phase(s, STAT_CD); - s->cmdfifo_cdb_offset = 1; - - /* Raise command completion interrupt */ - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; - esp_raise_irq(s); - } - break; - - case CMD_TI | CMD_DMA: - /* ATN remains asserted until TC == 0 */ - if (esp_get_tc(s) == 0) { - esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); - } - break; - } - break; - - case STAT_CD: - cmdlen = fifo8_num_used(&s->cmdfifo); - trace_esp_do_dma(cmdlen, len); - if (s->dma_memory_read) { - len = MIN(len, fifo8_num_free(&s->cmdfifo)); - s->dma_memory_read(s->dma_opaque, buf, len); - fifo8_push_all(&s->cmdfifo, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); - } else { - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); - esp_raise_drq(s); - } - trace_esp_handle_ti_cmd(cmdlen); - s->ti_size = 0; - if (esp_get_tc(s) == 0) { - /* Command has been received */ - do_cmd(s); - } - break; - - case STAT_DO: - if (!s->current_req) { - return; - } - /* Copy FIFO data to device */ - len = MIN(s->async_len, ESP_FIFO_SZ); - len = MIN(len, fifo8_num_used(&s->fifo)); - n = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); - s->async_buf += n; - s->async_len -= n; - s->ti_size += n; - - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - return; - } - - esp_dma_ti_check(s); - break; - - case STAT_DI: - if (!s->current_req) { - return; - } - /* Copy device data to FIFO */ - len = MIN(s->async_len, esp_get_tc(s)); - len = MIN(len, fifo8_num_free(&s->fifo)); - fifo8_push_all(&s->fifo, s->async_buf, len); - s->async_buf += len; - s->async_len -= len; - s->ti_size -= len; - esp_set_tc(s, esp_get_tc(s) - len); - - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - s->data_in_ready = false; - return; - } - - esp_dma_ti_check(s); - break; - } -} - static void esp_do_dma(ESPState *s) { uint32_t len, cmdlen; @@ -669,7 +534,6 @@ static void esp_do_dma(ESPState *s) case CMD_SELATNS | CMD_DMA: if (fifo8_num_used(&s->cmdfifo) == 1) { /* First byte received, stop in message out phase */ - esp_set_phase(s, STAT_CD); s->cmdfifo_cdb_offset = 1; /* Raise command completion interrupt */ @@ -913,7 +777,7 @@ static void esp_pdma_cb(ESPState *s) write_response_pdma_cb(s); break; case DO_DMA_PDMA_CB: - do_dma_pdma_cb(s); + esp_do_dma(s); break; default: g_assert_not_reached(); From patchwork Fri Jan 12 12:53:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886064 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=lCypg7IN; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGT3Rnnz1yPm for ; 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bh=8xI8vflAYA1yRD6nzOMwUkXrNNBU14YuiIIZilCh/3E=; b=lCypg7INoZMSHcEd7uuNemxwoT 6LpWivSzldzTjCDHPpp7QDyF/bVCiHpwlQ7vc/7wTTFej1p84Rr3Mp4x564bJJs6fSF5Rq5nFmB6F DPHLAzcAEcdKjXdcTR4HrayqQ+vzO9DUhFVbCDmHmmTKTZok6e3sN8zkclSh/e0GALnKNWXANRgCM um8VIOSGbijuzE6QLMBPCFc9sEhtz0TixTw+WfAcOiTYXvBLX1JncuDU2RX/V2W8FeNLWBgKDcH8k L5nyi5b1oEbiMQ6Fa8/0YHABVjd77X0bahEyKfp9qg9S1PwfBXJi6k64sZOu4SGWs6eEHQp3ktPnq 4wFJtv4B8hHk4YCWR4qxzaktGdWOdFqIFi4qPw7Pxg1K63yDXrttld+9wmULIVQjN+diR8Q/GpNaw 7zB9aNLVpducY4VjYvKYxOZ26gXuhK8+Wrc5ncpmgW+dW2YFbAg72QIZDRE6vLHFMNYF0UrKkuwCC mzoj6wTO/hgUvOz1Zn+g0p7/m3HLU83ndQVpXwabK6ug3PF/r77qqS8TbtP6Xi6nDhSpRzEwDvzV+ eNuZR/yHsLom1TtBWQ66dJ2k/oo8owTHNTz7Qv8w1f+GylBSNPSsoqNPuPhgCzl5AXkzuYqlPisTH XF75JBewCSbsR8vZJYrq1j2gFYPyTHv5BMCWi4Wls=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5i-0008jM-CU; Fri, 12 Jan 2024 12:56:58 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:46 +0000 Message-Id: <20240112125420.514425-55-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 54/88] esp.c: move CMD_ICCS command logic to esp_do_dma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The special logic in write_response_pdma_cb() is now no longer required since esp_do_dma() can be used as a direct replacement. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 82 ++++++++++++++++++++++++++++++------------- include/hw/scsi/esp.h | 1 - 2 files changed, 57 insertions(+), 26 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f69b2709fc..c6e5ddd537 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -446,40 +446,23 @@ static void handle_satn_stop(ESPState *s) } } -static void write_response_pdma_cb(ESPState *s) -{ - esp_set_phase(s, STAT_ST); - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; - esp_raise_irq(s); -} - static void write_response(ESPState *s) { uint8_t buf[2]; trace_esp_write_response(s->status); - buf[0] = s->status; - buf[1] = 0; - if (s->dma) { - if (s->dma_memory_write) { - s->dma_memory_write(s->dma_opaque, buf, 2); - esp_set_phase(s, STAT_ST); - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; - } else { - esp_set_pdma_cb(s, WRITE_RESPONSE_PDMA_CB); - esp_raise_drq(s); - return; - } + esp_do_dma(s); } else { + buf[0] = s->status; + buf[1] = 0; + fifo8_reset(&s->fifo); fifo8_push_all(&s->fifo, buf, 2); s->rregs[ESP_RFLAGS] = 2; + esp_raise_irq(s); } - esp_raise_irq(s); } static void esp_dma_ti_check(ESPState *s) @@ -673,6 +656,58 @@ static void esp_do_dma(ESPState *s) esp_dma_ti_check(s); } break; + + case STAT_ST: + switch (s->rregs[ESP_CMD]) { + case CMD_ICCS | CMD_DMA: + len = MIN(len, 1); + + if (len) { + buf[0] = s->status; + + if (s->dma_memory_write) { + s->dma_memory_write(s->dma_opaque, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } else { + fifo8_push_all(&s->fifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } + + esp_set_phase(s, STAT_MI); + + if (esp_get_tc(s) > 0) { + /* Process any message in phase data */ + esp_do_dma(s); + } + } + break; + } + break; + + case STAT_MI: + switch (s->rregs[ESP_CMD]) { + case CMD_ICCS | CMD_DMA: + len = MIN(len, 1); + + if (len) { + buf[0] = 0; + + if (s->dma_memory_write) { + s->dma_memory_write(s->dma_opaque, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } else { + fifo8_push_all(&s->fifo, buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } + + /* Raise end of command interrupt */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_CD; + esp_raise_irq(s); + } + break; + } + break; } } @@ -773,9 +808,6 @@ static void esp_do_nodma(ESPState *s) static void esp_pdma_cb(ESPState *s) { switch (s->pdma_cb) { - case WRITE_RESPONSE_PDMA_CB: - write_response_pdma_cb(s); - break; case DO_DMA_PDMA_CB: esp_do_dma(s); break; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index a4b2ed115c..0207fdd7a6 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -152,7 +152,6 @@ struct SysBusESPState { /* PDMA callbacks */ enum pdma_cb { - WRITE_RESPONSE_PDMA_CB = 3, DO_DMA_PDMA_CB = 4 }; From patchwork Fri Jan 12 12:53:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886085 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5m-0008jM-ME; Fri, 12 Jan 2024 12:56:58 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:47 +0000 Message-Id: <20240112125420.514425-56-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 55/88] esp.c: always use esp_do_dma() in pdma_cb() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org There is now only a single implementation contained within esp_do_dma() so call it directly. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index c6e5ddd537..bdbdb209f7 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -807,13 +807,7 @@ static void esp_do_nodma(ESPState *s) static void esp_pdma_cb(ESPState *s) { - switch (s->pdma_cb) { - case DO_DMA_PDMA_CB: - esp_do_dma(s); - break; - default: - g_assert_not_reached(); - } + esp_do_dma(s); } void esp_command_complete(SCSIRequest *req, size_t resid) From patchwork Fri Jan 12 12:53:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886096 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=w4CPE7aN; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5m-0008jM-W8; Fri, 12 Jan 2024 12:57:03 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:48 +0000 Message-Id: <20240112125420.514425-57-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 56/88] esp.c: remove unused PDMA callback implementation X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Note that this is a migration break for the q800 machine because the extra PDMA information is no longer included. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 55 ++++--------------------------------------- include/hw/scsi/esp.h | 6 ----- 2 files changed, 5 insertions(+), 56 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index bdbdb209f7..5061c9d5a1 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -223,11 +223,6 @@ static void esp_pdma_write(ESPState *s, uint8_t val) esp_set_tc(s, dmalen); } -static void esp_set_pdma_cb(ESPState *s, enum pdma_cb cb) -{ - s->pdma_cb = cb; -} - static int esp_select(ESPState *s) { int target; @@ -377,7 +372,7 @@ static void handle_satn(ESPState *s) s->dma_cb = handle_satn; return; } - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + if (esp_select(s) < 0) { return; } @@ -400,7 +395,7 @@ static void handle_s_without_atn(ESPState *s) s->dma_cb = handle_s_without_atn; return; } - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + if (esp_select(s) < 0) { return; } @@ -424,7 +419,7 @@ static void handle_satn_stop(ESPState *s) s->dma_cb = handle_satn_stop; return; } - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); + if (esp_select(s) < 0) { return; } @@ -497,7 +492,6 @@ static void esp_do_dma(ESPState *s) s->cmdfifo_cdb_offset += n; } - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); switch (s->rregs[ESP_CMD]) { @@ -551,7 +545,6 @@ static void esp_do_dma(ESPState *s) n = MIN(fifo8_num_free(&s->cmdfifo), n); fifo8_push_all(&s->cmdfifo, buf, n); - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); } trace_esp_handle_ti_cmd(cmdlen); @@ -597,7 +590,6 @@ static void esp_do_dma(ESPState *s) s->async_len -= n; s->ti_size += n; - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { @@ -644,7 +636,6 @@ static void esp_do_dma(ESPState *s) s->async_len -= len; s->ti_size -= len; esp_set_tc(s, esp_get_tc(s) - len); - esp_set_pdma_cb(s, DO_DMA_PDMA_CB); esp_raise_drq(s); if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { @@ -805,11 +796,6 @@ static void esp_do_nodma(ESPState *s) } } -static void esp_pdma_cb(ESPState *s) -{ - esp_do_dma(s); -} - void esp_command_complete(SCSIRequest *req, size_t resid) { ESPState *s = req->hba_private; @@ -1229,33 +1215,6 @@ static int esp_post_load(void *opaque, int version_id) return 0; } -/* - * PDMA (or pseudo-DMA) is only used on the Macintosh and requires the - * guest CPU to perform the transfers between the SCSI bus and memory - * itself. This is indicated by the dma_memory_read and dma_memory_write - * functions being NULL (in contrast to the ESP PCI device) whilst - * dma_enabled is still set. - */ - -static bool esp_pdma_needed(void *opaque) -{ - ESPState *s = ESP(opaque); - - return s->dma_memory_read == NULL && s->dma_memory_write == NULL && - s->dma_enabled; -} - -static const VMStateDescription vmstate_esp_pdma = { - .name = "esp/pdma", - .version_id = 0, - .minimum_version_id = 0, - .needed = esp_pdma_needed, - .fields = (const VMStateField[]) { - VMSTATE_UINT8(pdma_cb, ESPState), - VMSTATE_END_OF_LIST() - } -}; - const VMStateDescription vmstate_esp = { .name = "esp", .version_id = 6, @@ -1290,10 +1249,6 @@ const VMStateDescription vmstate_esp = { VMSTATE_UINT8_TEST(lun, ESPState, esp_is_version_6), VMSTATE_END_OF_LIST() }, - .subsections = (const VMStateDescription * const []) { - &vmstate_esp_pdma, - NULL - } }; static void sysbus_esp_mem_write(void *opaque, hwaddr addr, @@ -1342,7 +1297,7 @@ static void sysbus_esp_pdma_write(void *opaque, hwaddr addr, esp_pdma_write(s, val); break; } - esp_pdma_cb(s); + esp_do_dma(s); } static uint64_t sysbus_esp_pdma_read(void *opaque, hwaddr addr, @@ -1363,7 +1318,7 @@ static uint64_t sysbus_esp_pdma_read(void *opaque, hwaddr addr, val = (val << 8) | esp_pdma_read(s); break; } - esp_pdma_cb(s); + esp_do_dma(s); return val; } diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 0207fdd7a6..6f942864a6 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -51,7 +51,6 @@ struct ESPState { ESPDMAMemoryReadWriteFunc dma_memory_write; void *dma_opaque; void (*dma_cb)(ESPState *s); - uint8_t pdma_cb; uint8_t mig_version_id; @@ -150,11 +149,6 @@ struct SysBusESPState { #define TCHI_FAS100A 0x4 #define TCHI_AM53C974 0x12 -/* PDMA callbacks */ -enum pdma_cb { - DO_DMA_PDMA_CB = 4 -}; - void esp_dma_enable(ESPState *s, int irq, int level); void esp_request_cancelled(SCSIRequest *req); void esp_command_complete(SCSIRequest *req, size_t resid); From patchwork Fri Jan 12 12:53:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886038 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5r-0008jM-9R; Fri, 12 Jan 2024 12:57:07 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:49 +0000 Message-Id: <20240112125420.514425-58-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 57/88] esp.c: rename data_in_ready to to data_ready X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This field is currently used to handle deferred interrupts for the DATA IN phase but the code will soon be updated to do the same for the DATA OUT phase. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 ++++---- include/hw/scsi/esp.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 5061c9d5a1..73c723afcc 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -328,7 +328,7 @@ static void do_command_phase(ESPState *s) * Switch to DATA IN phase but wait until initial data xfer is * complete before raising the command completion interrupt */ - s->data_in_ready = false; + s->data_ready = false; esp_set_phase(s, STAT_DI); } else { esp_set_phase(s, STAT_DO); @@ -859,12 +859,12 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) s->async_len = len; s->async_buf = scsi_req_get_buf(req); - if (!to_device && !s->data_in_ready) { + if (!to_device && !s->data_ready) { /* * Initial incoming data xfer is complete so raise command * completion interrupt */ - s->data_in_ready = true; + s->data_ready = true; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } @@ -1241,7 +1241,7 @@ const VMStateDescription vmstate_esp = { VMSTATE_UINT32_TEST(mig_cmdlen, ESPState, esp_is_before_version_5), VMSTATE_UINT32(do_cmd, ESPState), VMSTATE_UINT32_TEST(mig_dma_left, ESPState, esp_is_before_version_5), - VMSTATE_BOOL_TEST(data_in_ready, ESPState, esp_is_version_5), + VMSTATE_BOOL_TEST(data_ready, ESPState, esp_is_version_5), VMSTATE_UINT8_TEST(cmdfifo_cdb_offset, ESPState, esp_is_version_5), VMSTATE_FIFO8_TEST(fifo, ESPState, esp_is_version_5), VMSTATE_FIFO8_TEST(cmdfifo, ESPState, esp_is_version_5), diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 6f942864a6..1036606943 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -40,7 +40,7 @@ struct ESPState { uint8_t lun; uint32_t do_cmd; - bool data_in_ready; + bool data_ready; uint8_t ti_cmd; int dma_enabled; From patchwork Fri Jan 12 12:53:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886072 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=RseBXJjR; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMH43R5hz1yQ1 for ; 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bh=ZO5PmPAUOowGailjrSg7vG1qJlLEPqgqkC2eSQUBz3s=; b=RseBXJjRprC6QN1XmYXUsU4m6M D0xqswkjCxkEIkK554mnMqDyhSTR2jOpfz9OHSTP7aRXOmoBRdIuUiwsJhtrM/rj+Y4KRwsdX5lU1 x9gmeMCI+1njY4g5iVdZ4vPLwWdTL7eeKnMvsnkHOqDtCEq6ymW1kppY9fZEMmj8j+aKdTmr8Lx8n QxqmDTqZLd7PodwtTdDaW2gDSWaWuL+hsve2qSzwlFggxFaymmYMU2936UrolLefsIhw2OSkQgsDT aIyfLhr62EneyFw/UISvXd9D15PV9tqzFWQy6wmDLN1F28QQ7DWf1gfqbLgbXmMwm1+gR/4kqETed irrIUW0ZeK1GPMk+uzDQEmiKDHprcCCW9mTbZINt+WD44Agp+v477jEGde5doetiyGOe0rIgbPoHQ +BrSHhyfGosNGKONkNzMYdTUzWjaD8C+mYXR4DVsrC0ZWH1BFOjftKLRe8tbM1KHGOxRt4l9RqLr8 wPplaVVIPPnJRmuVz9QxnRpqMxFXFCWyXCd/GwAdy9s3NoTB/arRXrDK3/Sg9WFXBVo/CSfSrljp3 KNo0Z+oumWGiT9ZMKyLfRQGeCyCPO0Knu4TOSECs+vsxauvINNyi64ez7mr/z8qMDkiDkVXeAWB/U +x5/J6pg2aRCE+JvkaSoxQifJtNeiAHpORNimsHdA=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH5v-0008jM-Pu; Fri, 12 Jan 2024 12:57:11 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:50 +0000 Message-Id: <20240112125420.514425-59-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 58/88] esp.c: separate logic based upon ESP command in esp_command_complete() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The handling of the INTR_FC and INTR_BS bits is different depending upon the last command executed by the ESP. Note that currently INTR_FC is managed elsewhere, but that will change soon. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 73c723afcc..75538f5859 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -823,25 +823,27 @@ void esp_command_complete(SCSIRequest *req, size_t resid) * Switch to status phase. For non-DMA transfers from the target the last * byte is still in the FIFO */ - esp_set_phase(s, STAT_ST); - if (s->ti_size == 0) { - /* - * Transfer complete: force TC to zero just in case a TI command was - * requested for more data than the command returns (Solaris 8 does - * this) - */ - esp_set_tc(s, 0); - esp_dma_ti_check(s); - } else { + s->ti_size = 0; + + switch (s->rregs[ESP_CMD]) { + case CMD_SEL | CMD_DMA: + case CMD_SEL: + case CMD_SELATN | CMD_DMA: + case CMD_SELATN: /* - * Transfer truncated: raise INTR_BS to indicate early change of - * phase + * No data phase for sequencer command so raise deferred bus service + * interrupt */ s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); - s->ti_size = 0; + break; } + /* Raise bus service interrupt to indicate change to STATUS phase */ + esp_set_phase(s, STAT_ST); + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + esp_lower_drq(s); + if (s->current_req) { scsi_req_unref(s->current_req); s->current_req = NULL; From patchwork Fri Jan 12 12:53:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886052 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=lMTeBHTk; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMFz5g7vz1yPm for ; Sat, 13 Jan 2024 00:05:11 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOHBU-0006nb-Q1; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH60-0008jM-6e; Fri, 12 Jan 2024 12:57:14 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:51 +0000 Message-Id: <20240112125420.514425-60-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 59/88] esp.c: separate logic based upon ESP command in esp_transfer_data() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The handling of the INTR_FC and INTR_BS bits is different depending upon the last command executed by the ESP. Note that currently INTR_FC is managed elsewhere, but that will change soon. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 75538f5859..b6cf1b43db 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -862,13 +862,33 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) s->async_buf = scsi_req_get_buf(req); if (!to_device && !s->data_ready) { - /* - * Initial incoming data xfer is complete so raise command - * completion interrupt - */ s->data_ready = true; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + + switch (s->rregs[ESP_CMD]) { + case CMD_SEL | CMD_DMA: + case CMD_SEL: + case CMD_SELATN | CMD_DMA: + case CMD_SELATN: + case CMD_SELATNS | CMD_DMA: + case CMD_SELATNS: + /* + * Initial incoming data xfer is complete so raise command + * completion interrupt + */ + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + + case CMD_TI | CMD_DMA: + case CMD_TI: + /* + * Bus service interrupt raised because of initial change to + * DATA phase + */ + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + } } /* From patchwork Fri Jan 12 12:53:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886078 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=pnGBRTjP; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMHz5bcCz1yPm for ; 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bh=e5P4kUId6IlggOfevBgblAkFTfABYMw7RWbRatrL8t8=; b=pnGBRTjPYv5HRnmiBSOqZy3eB8 px2deWlPssO5TG9YqQQ2TwcYELmNEgHrjbHF+9Z3RxdfM8OnGKKsAgr+adwOaw3TNqAvM6xZs7L6f 9Dys+i4uJWDjU6KVjPlQO0kqBLt7SRijGkf8qoCfeMzaToxGcBlLbxUmxhGOx5TUXMaCBcrai/gf7 u6qMy66+o3CyVgtzGnZCeyaw5nZQLuCvfJKWkFJ5k5zvVVcVNzsxmvQXsQyW3VNVivG3lUr2PK4K0 D1nghVycAWT8tPFh/wunkI1KYEr3hbLKhF159LJG89Fu4sFhqkZfLiFP7xMFHNr3pyvyQ1NsYlw9Q GVOPM55oPGLRpLl/xqikFYgyokjt2w8B8LnexCZNRo7AKvCGnoxd9Vl1CjhApy5MY4Ny/NUevlHBo DxaMY6A8EhnNpvaq8u+d6Jr+TlYF549BIvuQaJk5FOoqDK8staowD/hhHH40kMBcZDccHVAX56q93 JVFLiZilS3b5z2BZYsmTePZUPuleHXUEzt4Kxk6P0QtpxxgHhVs67j4jryNsteK5eDYLIoOywEz90 pjyE9onb+VYZmiw1kfp7m7WKTzXvbwKKVeiBm+OQpxH5EMcmd5FVBLrKEkIt6ky8/SXQkvZPjffm9 ee7PWVO7LzUKj1dljpShBwswOsRfWezy5sK5e4LRU=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH62-0008jM-La; Fri, 12 Jan 2024 12:57:14 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:52 +0000 Message-Id: <20240112125420.514425-61-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 60/88] esp.c: use deferred interrupts for both DATA IN and DATA OUT phases X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This brings DATA OUT transfers in line with DATA IN transfers by ensuring that the guest visible function complete interrupt is only set once the SCSI layer has returned. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index b6cf1b43db..d71465718c 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -248,10 +248,8 @@ static int esp_select(ESPState *s) /* * Note that we deliberately don't raise the IRQ here: this will be done - * either in do_command_phase() for DATA OUT transfers or by the deferred - * IRQ mechanism in esp_transfer_data() for DATA IN transfers + * either in esp_transfer_data() or esp_command_complete() */ - s->rregs[ESP_RINTR] |= INTR_FC; s->rregs[ESP_RSEQ] = SEQ_CD; return 0; } @@ -321,20 +319,17 @@ static void do_command_phase(ESPState *s) datalen = scsi_req_enqueue(s->current_req); s->ti_size = datalen; fifo8_reset(&s->cmdfifo); + s->data_ready = false; if (datalen != 0) { s->ti_cmd = 0; + /* + * Switch to DATA phase but wait until initial data xfer is + * complete before raising the command completion interrupt + */ if (datalen > 0) { - /* - * Switch to DATA IN phase but wait until initial data xfer is - * complete before raising the command completion interrupt - */ - s->data_ready = false; esp_set_phase(s, STAT_DI); } else { esp_set_phase(s, STAT_DO); - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - esp_raise_irq(s); - esp_lower_drq(s); } scsi_req_continue(s->current_req); return; @@ -832,9 +827,9 @@ void esp_command_complete(SCSIRequest *req, size_t resid) case CMD_SELATN: /* * No data phase for sequencer command so raise deferred bus service - * interrupt + * and function complete interrupt */ - s->rregs[ESP_RINTR] |= INTR_BS; + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; break; } @@ -854,14 +849,13 @@ void esp_command_complete(SCSIRequest *req, size_t resid) void esp_transfer_data(SCSIRequest *req, uint32_t len) { ESPState *s = req->hba_private; - int to_device = (esp_get_phase(s) == STAT_DO); uint32_t dmalen = esp_get_tc(s); trace_esp_transfer_data(dmalen, s->ti_size); s->async_len = len; s->async_buf = scsi_req_get_buf(req); - if (!to_device && !s->data_ready) { + if (!s->data_ready) { s->data_ready = true; switch (s->rregs[ESP_CMD]) { @@ -869,6 +863,13 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) case CMD_SEL: case CMD_SELATN | CMD_DMA: case CMD_SELATN: + /* + * Initial incoming data xfer is complete for sequencer command + * so raise deferred bus service and function complete interrupt + */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + break; + case CMD_SELATNS | CMD_DMA: case CMD_SELATNS: /* @@ -876,7 +877,6 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * completion interrupt */ s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); break; case CMD_TI | CMD_DMA: @@ -886,9 +886,10 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * DATA phase */ s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); break; } + + esp_raise_irq(s); } /* From patchwork Fri Jan 12 12:53:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886099 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=05YNDNTW; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH63-0008jM-2S; Fri, 12 Jan 2024 12:57:19 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:53 +0000 Message-Id: <20240112125420.514425-62-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 61/88] esp.c: remove DATA IN phase logic when reading from FIFO X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Whilst the FIFO is used a storage buffer for both DMA and non-DMA requests, the loading and unloading is managed directly issuing commands to the ESP. As a result there is no need to manually invoke the non-DMA command handler. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index d71465718c..4c1ca63a57 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1067,17 +1067,6 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) qemu_log_mask(LOG_UNIMP, "esp: PIO data read not implemented\n"); s->rregs[ESP_FIFO] = 0; } else { - if (esp_get_phase(s) == STAT_DI) { - if (s->ti_size) { - esp_do_nodma(s); - } else { - /* - * The last byte of a non-DMA transfer has been read out - * of the FIFO so switch to status phase - */ - esp_set_phase(s, STAT_ST); - } - } s->rregs[ESP_FIFO] = esp_fifo_pop(&s->fifo); } val = s->rregs[ESP_FIFO]; From patchwork Fri Jan 12 12:53:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886060 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH67-0008jM-C7; Fri, 12 Jan 2024 12:57:23 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:54 +0000 Message-Id: <20240112125420.514425-63-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 62/88] esp.c: zero command register when TI command terminates due to phase change X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is the behaviour documented in the datasheet and allows the state machine to correctly process multiple consecutive TI commands. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 4c1ca63a57..ccb8ad4bae 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -519,6 +519,7 @@ static void esp_do_dma(ESPState *s) /* ATN remains asserted until TC == 0 */ if (esp_get_tc(s) == 0) { esp_set_phase(s, STAT_CD); + s->rregs[ESP_CMD] = 0; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -717,6 +718,7 @@ static void esp_do_nodma(ESPState *s) */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); esp_set_phase(s, STAT_CD); + s->rregs[ESP_CMD] = 0; s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -831,6 +833,11 @@ void esp_command_complete(SCSIRequest *req, size_t resid) */ s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; break; + + case CMD_TI | CMD_DMA: + case CMD_TI: + s->rregs[ESP_CMD] = 0; + break; } /* Raise bus service interrupt to indicate change to STATUS phase */ @@ -885,6 +892,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * Bus service interrupt raised because of initial change to * DATA phase */ + s->rregs[ESP_CMD] = 0; s->rregs[ESP_RINTR] |= INTR_BS; break; } From patchwork Fri Jan 12 12:53:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886058 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=yzyw30PR; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGK0807z1yPm for ; 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bh=SNVGuDAiOl4Y2cc0LW/69S8I9XTCJhPHlEiJvwmXo8Q=; b=yzyw30PR5l0ip/XRhJvKbuYjwD ituxTwJ4Icz60uPyG2mCLBXaNdOhUD5PyYayzxqidJcKqYO2/zKVkPPG4Q/6oDdtY8bOwRVVxbAH7 SnUiBxp3JMjcitC+YxtPTLJ9oEagauwhaGQnfVGF9g+yBBsd+v5piIu/00CM/0DZwUOnNEwKkwz4S cY4BugXIrJwvsYqNVtnaJ5NHt0/3QsAT+JQiRSy7XRJT8UPfOymo+P99mkeUMSmV2JgWXM/o/Io5x W+RzvwCLQmea9mfiwF8s/7VY1ZjA46URH8RU7WN5SJT7ideiEto8Mzcbb5Zq3CCmkYioWjLIrI35T PFGhGnGYDhVc+NRX4KSQsboUq9JFrZ7qxpIM07+IAFbWLF10s5Qi8SmlNqn7FwyJVz1sW2Aux2zcE FSFQg19wzl+9PxUeJzXUkQEiZu2R9B2hrsY6NV0KQyoUOhJpLvFjejDFaugr54Ofv5MOQtilcUJXs 9At1HVSfi5xUtZyo6BKN1uMVYr1j89h7r+QB0Whi+sWwuY4R0tp+x6g3vmynvb4B9gFJ/WaHn3HNW Gxn46mTuaA1/7nKh55UEkeTgRna+jJAlUsmOcL4lXxr44LiCt6i3TKp0CGKa8rVdP00ctOmscM/oO JpEWEKJz9U9XGYToewqA9bTbRJYVIZW+u3ICb0uwk=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6B-0008jM-M4; Fri, 12 Jan 2024 12:57:27 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:55 +0000 Message-Id: <20240112125420.514425-64-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 63/88] esp.c: remove unneeded ti_cmd field X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org According to the datasheet the previous ESP command remains in the ESP_CMD register, which caused a problem when consecutive TI commands were issued as it becomes impossible for the state machine to know when the first TI command finishes. This was the original reason for introducing the ti_cmd field which kept track of the last written command for this purpose. However closer reading of the datasheet shows that a TI command that terminates due to a change of SCSI target phase resets the ESP_CMD register to zero which solves this problem. Now that this has been fixed in the previous commit, remove the unneeded ti_cmd field and access the ESP_CMD register directly instead. Bump the vmstate_esp version to indicate that the ti_cmd field is no longer included. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 19 +++++++++++++------ include/hw/scsi/esp.h | 3 ++- 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index ccb8ad4bae..bcebd00831 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -321,7 +321,6 @@ static void do_command_phase(ESPState *s) fifo8_reset(&s->cmdfifo); s->data_ready = false; if (datalen != 0) { - s->ti_cmd = 0; /* * Switch to DATA phase but wait until initial data xfer is * complete before raising the command completion interrupt @@ -908,12 +907,12 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * async data transfer is delayed then s->dma is set incorrectly. */ - if (s->ti_cmd == (CMD_TI | CMD_DMA)) { + if (s->rregs[ESP_CMD] == (CMD_TI | CMD_DMA)) { /* When the SCSI layer returns more data, raise deferred INTR_BS */ esp_dma_ti_check(s); esp_do_dma(s); - } else if (s->ti_cmd == CMD_TI) { + } else if (s->rregs[ESP_CMD] == CMD_TI) { esp_do_nodma(s); } } @@ -927,7 +926,6 @@ static void handle_ti(ESPState *s) return; } - s->ti_cmd = s->rregs[ESP_CMD]; if (s->dma) { dmalen = esp_get_tc(s); trace_esp_handle_ti(dmalen); @@ -1200,6 +1198,14 @@ static bool esp_is_version_6(void *opaque, int version_id) return version_id >= 6; } +static bool esp_is_between_version_5_and_6(void *opaque, int version_id) +{ + ESPState *s = ESP(opaque); + + version_id = MIN(version_id, s->mig_version_id); + return version_id >= 5 && version_id <= 6; +} + int esp_pre_save(void *opaque) { ESPState *s = ESP(object_resolve_path_component( @@ -1237,7 +1243,7 @@ static int esp_post_load(void *opaque, int version_id) const VMStateDescription vmstate_esp = { .name = "esp", - .version_id = 6, + .version_id = 7, .minimum_version_id = 3, .post_load = esp_post_load, .fields = (const VMStateField[]) { @@ -1265,7 +1271,8 @@ const VMStateDescription vmstate_esp = { VMSTATE_UINT8_TEST(cmdfifo_cdb_offset, ESPState, esp_is_version_5), VMSTATE_FIFO8_TEST(fifo, ESPState, esp_is_version_5), VMSTATE_FIFO8_TEST(cmdfifo, ESPState, esp_is_version_5), - VMSTATE_UINT8_TEST(ti_cmd, ESPState, esp_is_version_5), + VMSTATE_UINT8_TEST(mig_ti_cmd, ESPState, + esp_is_between_version_5_and_6), VMSTATE_UINT8_TEST(lun, ESPState, esp_is_version_6), VMSTATE_END_OF_LIST() }, diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 1036606943..39b416f538 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -41,7 +41,6 @@ struct ESPState { uint32_t do_cmd; bool data_ready; - uint8_t ti_cmd; int dma_enabled; uint32_t async_len; @@ -62,6 +61,8 @@ struct ESPState { uint8_t mig_ti_buf[ESP_FIFO_SZ]; uint8_t mig_cmdbuf[ESP_CMDFIFO_SZ]; uint32_t mig_cmdlen; + + uint8_t mig_ti_cmd; }; #define TYPE_SYSBUS_ESP "sysbus-esp" From patchwork Fri Jan 12 12:53:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886047 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=NvsXR8YC; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6F-0008jM-VZ; Fri, 12 Jan 2024 12:57:32 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:56 +0000 Message-Id: <20240112125420.514425-65-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 64/88] esp.c: don't raise INTR_BS interrupt in DATA IN phase until TI command issued X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In the case where a SCSI command with a DATA IN phase has been issued, the host may preload the FIFO with unaligned bytes before issuing the main DMA transfer. When accumulating data in the FIFO don't raise the INTR_BS interrupt until the TI command is issued, otherwise the unexpected interrupt can confuse the host. In particular this is needed to prevent the MacOS Disk Utility from failing when switching non-DMA transfers to use esp_do_nodma(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index bcebd00831..dd6bf6f033 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -786,6 +786,11 @@ static void esp_do_nodma(ESPState *s) return; } + /* If preloading the FIFO, defer until TI command issued */ + if (s->rregs[ESP_CMD] != CMD_TI) { + return; + } + s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); break; From patchwork Fri Jan 12 12:53:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886094 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=TaZTcrKL; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6K-0008jM-6O; Fri, 12 Jan 2024 12:57:36 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:57 +0000 Message-Id: <20240112125420.514425-66-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 65/88] esp.c: move non-DMA TI logic to separate esp_nodma_ti_dataout() function X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is to allow the logic to be moved during the next commit. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 51 +++++++++++++++++++++++++++++---------------------- 1 file changed, 29 insertions(+), 22 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index dd6bf6f033..97e48e9526 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -697,11 +697,38 @@ static void esp_do_dma(ESPState *s) } } +static void esp_nodma_ti_dataout(ESPState *s) +{ + int len; + + if (!s->current_req) { + return; + } + if (s->async_len == 0) { + /* Defer until data is available. */ + return; + } + len = MIN(s->async_len, ESP_FIFO_SZ); + len = MIN(len, fifo8_num_used(&s->fifo)); + esp_fifo_pop_buf(&s->fifo, s->async_buf, len); + s->async_buf += len; + s->async_len -= len; + s->ti_size += len; + + if (s->async_len == 0) { + scsi_req_continue(s->current_req); + return; + } + + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); +} + static void esp_do_nodma(ESPState *s) { uint8_t buf[ESP_FIFO_SZ]; uint32_t cmdlen; - int len, n; + int n; switch (esp_get_phase(s)) { case STAT_MO: @@ -743,27 +770,7 @@ static void esp_do_nodma(ESPState *s) break; case STAT_DO: - if (!s->current_req) { - return; - } - if (s->async_len == 0) { - /* Defer until data is available. */ - return; - } - len = MIN(s->async_len, ESP_FIFO_SZ); - len = MIN(len, fifo8_num_used(&s->fifo)); - esp_fifo_pop_buf(&s->fifo, s->async_buf, len); - s->async_buf += len; - s->async_len -= len; - s->ti_size += len; - - if (s->async_len == 0) { - scsi_req_continue(s->current_req); - return; - } - - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + esp_nodma_ti_dataout(s); break; case STAT_DI: From patchwork Fri Jan 12 12:53:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886084 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=mrHaBnHS; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6O-0008jM-FS; Fri, 12 Jan 2024 12:57:36 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:58 +0000 Message-Id: <20240112125420.514425-67-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 66/88] esp.c: process non-DMA FIFO writes in esp_do_nodma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently any write to the ESP FIFO in the MESSAGE OUT or COMMAND phases will manually raise the bus service interrupt. Instead of duplicating the interrupt logic in esp_reg_write(), update esp_do_nodma() to correctly process incoming FIFO data during the MESSAGE OUT and COMMAND phases. Part of this change is to call esp_nodma_ti_dataout() from handle_ti() to ensure that the DATA OUT phase FIFO transfer only occurs when executing a non-DMA TI command instead of for each byte entering the FIFO. One slight complication is that NextSTEP uses multiple TI commands to transfer the CDB one byte at a time (as opposed to loading the FIFO and using a single TI command), so it is necessary to determine the expected length of the SCSI CDB being received. This is handled by the introduction of a new esp_cdb_length() function which returns the expected SCSI CDB length based upon the first command byte. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 121 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 86 insertions(+), 35 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 97e48e9526..5bb8cc4ea7 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -420,6 +420,7 @@ static void handle_satn_stop(ESPState *s) esp_set_phase(s, STAT_MO); s->rregs[ESP_RSEQ] = SEQ_MO; + s->cmdfifo_cdb_offset = 0; if (s->dma) { esp_do_dma(s); @@ -454,6 +455,22 @@ static void write_response(ESPState *s) } } +static int esp_cdb_length(ESPState *s) +{ + const uint8_t *pbuf; + int cmdlen, len; + + cmdlen = fifo8_num_used(&s->cmdfifo); + if (cmdlen < s->cmdfifo_cdb_offset) { + return 0; + } + + pbuf = fifo8_peek_buf(&s->cmdfifo, cmdlen, NULL); + len = scsi_cdb_length((uint8_t *)&pbuf[s->cmdfifo_cdb_offset]); + + return len; +} + static void esp_dma_ti_check(ESPState *s) { if (esp_get_tc(s) == 0 && fifo8_num_used(&s->fifo) < 2) { @@ -738,16 +755,40 @@ static void esp_do_nodma(ESPState *s) fifo8_push_all(&s->cmdfifo, buf, n); s->cmdfifo_cdb_offset += n; - /* - * Extra message out bytes received: update cmdfifo_cdb_offset - * and then switch to command phase - */ - s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); - esp_set_phase(s, STAT_CD); - s->rregs[ESP_CMD] = 0; - s->rregs[ESP_RSEQ] = SEQ_CD; - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); + switch (s->rregs[ESP_CMD]) { + case CMD_SELATN: + if (fifo8_num_used(&s->cmdfifo) >= 1) { + /* First byte received, switch to command phase */ + esp_set_phase(s, STAT_CD); + s->cmdfifo_cdb_offset = 1; + + if (fifo8_num_used(&s->cmdfifo) > 1) { + /* Process any additional command phase data */ + esp_do_nodma(s); + } + } + break; + + case CMD_SELATNS: + if (fifo8_num_used(&s->cmdfifo) == 1) { + /* First byte received, stop in message out phase */ + s->cmdfifo_cdb_offset = 1; + + /* Raise command completion interrupt */ + s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + esp_raise_irq(s); + } + break; + + case CMD_TI: + /* ATN remains asserted until FIFO empty */ + s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); + esp_set_phase(s, STAT_CD); + s->rregs[ESP_CMD] = 0; + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + break; + } break; case STAT_CD: @@ -756,21 +797,40 @@ static void esp_do_nodma(ESPState *s) n = MIN(fifo8_num_free(&s->cmdfifo), n); fifo8_push_all(&s->cmdfifo, buf, n); - cmdlen = fifo8_num_used(&s->cmdfifo); - trace_esp_handle_ti_cmd(cmdlen); - s->ti_size = 0; + switch (s->rregs[ESP_CMD]) { + case CMD_TI: + cmdlen = fifo8_num_used(&s->cmdfifo); + trace_esp_handle_ti_cmd(cmdlen); + + /* CDB may be transferred in one or more TI commands */ + if (esp_cdb_length(s) && esp_cdb_length(s) == + fifo8_num_used(&s->cmdfifo) - s->cmdfifo_cdb_offset) { + /* Command has been received */ + do_cmd(s); + } else { + /* + * If data was transferred from the FIFO then raise bus + * service interrupt to indicate transfer complete. Otherwise + * defer until the next FIFO write. + */ + if (n) { + /* Raise interrupt to indicate transfer complete */ + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + } + } + break; - /* No command received */ - if (s->cmdfifo_cdb_offset == fifo8_num_used(&s->cmdfifo)) { - return; + case CMD_SEL: + case CMD_SELATN: + /* FIFO already contain entire CDB */ + do_cmd(s); + break; } - - /* Command has been received */ - do_cmd(s); break; case STAT_DO: - esp_nodma_ti_dataout(s); + /* Accumulate data in FIFO until non-DMA TI is executed */ break; case STAT_DI: @@ -945,6 +1005,10 @@ static void handle_ti(ESPState *s) } else { trace_esp_handle_ti(s->ti_size); esp_do_nodma(s); + + if (esp_get_phase(s) == STAT_DO) { + esp_nodma_ti_dataout(s); + } } } @@ -1141,23 +1205,10 @@ void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) s->rregs[ESP_RSTAT] &= ~STAT_TC; break; case ESP_FIFO: - if (esp_get_phase(s) == STAT_MO || esp_get_phase(s) == STAT_CD) { - if (!fifo8_is_full(&s->fifo)) { - esp_fifo_push(&s->fifo, val); - esp_fifo_push(&s->cmdfifo, fifo8_pop(&s->fifo)); - } - - /* - * If any unexpected message out/command phase data is - * transferred using non-DMA, raise the interrupt - */ - if (s->rregs[ESP_CMD] == CMD_TI) { - s->rregs[ESP_RINTR] |= INTR_BS; - esp_raise_irq(s); - } - } else { + if (!fifo8_is_full(&s->fifo)) { esp_fifo_push(&s->fifo, val); } + esp_do_nodma(s); break; case ESP_CMD: s->rregs[saddr] = val; From patchwork Fri Jan 12 12:53:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886088 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=Fd7lVGPA; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6O-0008jM-Vm; Fri, 12 Jan 2024 12:57:38 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:53:59 +0000 Message-Id: <20240112125420.514425-68-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 67/88] esp.c: replace get_cmd() with esp_do_nodma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Now that the esp_do_nodma() state machine correctly handles incoming FIFO data, all remaining users of get_cmd() can be replaced with esp_do_nodma() and the get_cmd() function removed completely. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 54 ++++----------------------------------------------- 1 file changed, 4 insertions(+), 50 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 5bb8cc4ea7..277eb8647b 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -257,40 +257,6 @@ static int esp_select(ESPState *s) static void esp_do_dma(ESPState *s); static void esp_do_nodma(ESPState *s); -static uint32_t get_cmd(ESPState *s, uint32_t maxlen) -{ - uint8_t buf[ESP_CMDFIFO_SZ]; - uint32_t dmalen, n; - int target; - - target = s->wregs[ESP_WBUSID] & BUSID_DID; - if (s->dma) { - dmalen = MIN(esp_get_tc(s), maxlen); - if (dmalen == 0) { - return 0; - } - if (s->dma_memory_read) { - s->dma_memory_read(s->dma_opaque, buf, dmalen); - dmalen = MIN(fifo8_num_free(&s->cmdfifo), dmalen); - fifo8_push_all(&s->cmdfifo, buf, dmalen); - esp_set_tc(s, esp_get_tc(s) - dmalen); - } else { - return 0; - } - } else { - dmalen = MIN(fifo8_num_used(&s->fifo), maxlen); - if (dmalen == 0) { - return 0; - } - n = esp_fifo_pop_buf(&s->fifo, buf, dmalen); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - } - trace_esp_get_cmd(dmalen, target); - - return dmalen; -} - static void do_command_phase(ESPState *s) { uint32_t cmdlen; @@ -376,10 +342,7 @@ static void handle_satn(ESPState *s) if (s->dma) { esp_do_dma(s); } else { - if (get_cmd(s, ESP_CMDFIFO_SZ)) { - s->cmdfifo_cdb_offset = 1; - do_cmd(s); - } + esp_do_nodma(s); } } @@ -401,9 +364,7 @@ static void handle_s_without_atn(ESPState *s) if (s->dma) { esp_do_dma(s); } else { - if (get_cmd(s, ESP_CMDFIFO_SZ)) { - do_cmd(s); - } + esp_do_nodma(s); } } @@ -425,14 +386,7 @@ static void handle_satn_stop(ESPState *s) if (s->dma) { esp_do_dma(s); } else { - if (get_cmd(s, 1)) { - trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo)); - - /* Raise command completion interrupt */ - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_MO; - esp_raise_irq(s); - } + esp_do_nodma(s); } } @@ -770,7 +724,7 @@ static void esp_do_nodma(ESPState *s) break; case CMD_SELATNS: - if (fifo8_num_used(&s->cmdfifo) == 1) { + if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, stop in message out phase */ s->cmdfifo_cdb_offset = 1; From patchwork Fri Jan 12 12:54:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886089 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=DFtAx0eJ; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMMd3lZtz1yP3 for ; 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bh=8B7V1v2+kwT4bDpY+vrvIlSYZpgJoQzndmCv9dP7RxM=; b=DFtAx0eJ3IQfnujuvcP8BSnNJm NZfFOV0yKJxzWY8sGmWIY+pHrqyXhk3/nkSKBxwyBXDxnoTwgfZtwyVWcmAj44ysgkFFdmahjjw0X Q7PO807Y6AXAXhik2PNJJHdjl2/beMZbpPDrRmZIwdlT7warI+TlBcLSve/RCm0ntAImxKNQMPIwm MEgS6kzJIHgISRAP41Sp7iO+TrgGzJNgpG2DwUPxf36f5dL3Xrymlxs7FFUIdAxWFny3zLJhPde0+ AJ1f+0X+A58jOj5Vmr3B/QZBxo/2uaUL5A4xciOXLpb/ShK/YCDYnNvSB07QkCho8mbFGZCgjX/Eh lE2kBJ7+gORuR0XmEvvE056thNa+elyoJuxNsMxBwi0YI3EI3VAht/uzGiGAiZUnuXuKp09jqm4b7 MUI/nGoAEUJ5KO39n+4q0ynnvC8xsHGnz98XmynIFWLwhoYuIF91jREtm4I2no0/lTvoTnSGtg6w7 ImW8L7ElQsR0ligBMjOl/TS33GF5XnLIyTeGbOwIWHA7eg4TMpN51thZ0RR2VdjQw1seARJdCm4WO jcv9Bn+8srhu8zZdPsMfS06xRj7st2g0KMh8dLJDyNGJKA84mBoSGmIGE2NV04fWX4aAwRjdxfkrG 1LHTucNvfrpfXm9S0E9/BpY5/BDUxPFutM6i9W5Aw=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6Q-0008jM-Db; Fri, 12 Jan 2024 12:57:38 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:00 +0000 Message-Id: <20240112125420.514425-69-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 68/88] esp.c: move write_response() non-DMA logic to esp_do_nodma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This moves the remaining non-DMA STATUS and MESSAGE IN phase logic from write_response() to esp_do_nodma(). Note that we can also now drop the extra fifo_reset() which is no longer required. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 277eb8647b..824ebe9ff0 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -392,20 +392,12 @@ static void handle_satn_stop(ESPState *s) static void write_response(ESPState *s) { - uint8_t buf[2]; - trace_esp_write_response(s->status); if (s->dma) { esp_do_dma(s); } else { - buf[0] = s->status; - buf[1] = 0; - - fifo8_reset(&s->fifo); - fifo8_push_all(&s->fifo, buf, 2); - s->rregs[ESP_RFLAGS] = 2; - esp_raise_irq(s); + esp_do_nodma(s); } } @@ -815,6 +807,28 @@ static void esp_do_nodma(ESPState *s) s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); break; + + case STAT_ST: + switch (s->rregs[ESP_CMD]) { + case CMD_ICCS: + fifo8_push(&s->fifo, s->status); + esp_set_phase(s, STAT_MI); + + /* Process any message in phase data */ + esp_do_nodma(s); + break; + } + break; + + case STAT_MI: + switch (s->rregs[ESP_CMD]) { + case CMD_ICCS: + fifo8_push(&s->fifo, 0); + + esp_raise_irq(s); + break; + } + break; } } From patchwork Fri Jan 12 12:54:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886097 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=lGEW8RnY; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMSB6MdKz1yPy for ; Sat, 13 Jan 2024 00:14:02 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOHDg-00053Z-26; Fri, 12 Jan 2024 08:05:08 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHCm-0004My-DK for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:04:15 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHCk-00032q-Am for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:04:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=3qX0hv0RhPB8tC6ZQexYbL35eZAx1aD0Ti58keQafw8=; b=lGEW8RnY5wJjylhY91EUEkdd3d qysDdOYAfp31l1eO+WgpJvP2M5PbxwlbL/YozH7vSLWMKJjot1Ikv0PCPNk+RO85jIP+wYZbSAvQo L3DdihhbRmYnNEyjYQdMjcwjbnoDusAgpViD43BsvFjHppuxaNYkZ1spAoxCH3GMSZxwFwfy9ssyP uSepbbaNHU45hkUGThWRoPLbuo7fpmVFsLmXrjHElyA5RYCfIYUhQ9UHz40M68Ftru0uErh+68Y5S QA7EZCls6mZVVfq0ANftPFHqKbWbUoRLg4AvbbzOkJeIFxXbqilhQBay7dFgm4ImsUUr3EN9vKvvR prB0RNG/CwA+KJXt0d4/YpeXcOBYdLFn8yBg/cN+jMhfZWZZpcmjlL4F0FYVFpKKPx8jfOhYauSP7 HlOldn7U5AXfobnFCh6D98ZVxMzjydoprV50HbaRxhD5aZnK4O9W81Xp5/Qna4EDQCNWvXOI//yFq HiUgtt1AJzTv1Hgwo4enwkidTbc1yveQhuaoReQjsiY75cbrYXNg90u7imEzeLCiDRoT9H1edfE9/ MWh0Oz1yzidLTotB0bqfZy8i6kjOFlzi08pHrlb9ZuyUgzRXtoCD+DSvRX8vf+jZugX3eUBIw7sUl K9JbVlqKIh49pJbPHZeha/K9g0WJ4w2MgtwtUBgNg=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6Q-0008jM-RD; Fri, 12 Jan 2024 12:57:42 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:01 +0000 Message-Id: <20240112125420.514425-70-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 69/88] esp.c: consolidate end of command sequence after ICCS command X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The end of command sequences for the ICCS command are currently different between the DMA and non-DMA versions, and also different from the description in the datasheet. Update the sequence so that only INTR_FC is asserted in both cases, and keep all the logic in esp_do_dma() and esp_do_nodma() rather than having some of it within esp_run_cmd(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 824ebe9ff0..6c62417985 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -650,8 +650,7 @@ static void esp_do_dma(ESPState *s) } /* Raise end of command interrupt */ - s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; + s->rregs[ESP_RINTR] |= INTR_FC; esp_raise_irq(s); } break; @@ -825,6 +824,8 @@ static void esp_do_nodma(ESPState *s) case CMD_ICCS: fifo8_push(&s->fifo, 0); + /* Raise end of command interrupt */ + s->rregs[ESP_RINTR] |= INTR_FC; esp_raise_irq(s); break; } @@ -1056,8 +1057,6 @@ static void esp_run_cmd(ESPState *s) case CMD_ICCS: trace_esp_mem_writeb_cmd_iccs(cmd); write_response(s); - s->rregs[ESP_RINTR] |= INTR_FC; - esp_set_phase(s, STAT_MI); break; case CMD_MSGACC: trace_esp_mem_writeb_cmd_msgacc(cmd); From patchwork Fri Jan 12 12:54:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886063 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6V-0008jM-4I; Fri, 12 Jan 2024 12:57:47 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:02 +0000 Message-Id: <20240112125420.514425-71-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 70/88] esp.c: ensure that STAT_INT is cleared when reading ESP_RINTR X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Both esp_raise_irq() and esp_lower_irq() check the STAT_INT bit in ESP_RSTAT to ensure that the IRQ is raised or lowered if its state changes. When reading ESP_RINTR, esp_lower_irq() was being called *after* ESP_RSTAT had been cleared meaning that STAT_INT was already clear, and so if STAT_INT was asserted beforehand then the esp_lower_irq() would have no effect. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6c62417985..604fb9235d 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1127,6 +1127,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) */ val = s->rregs[ESP_RINTR]; s->rregs[ESP_RINTR] = 0; + esp_lower_irq(s); s->rregs[ESP_RSTAT] &= ~STAT_TC; /* * According to the datasheet ESP_RSEQ should be cleared, but as the @@ -1137,7 +1138,6 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) * * s->rregs[ESP_RSEQ] = SEQ_0; */ - esp_lower_irq(s); break; case ESP_TCHI: /* Return the unique id if the value has never been written */ From patchwork Fri Jan 12 12:54:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886098 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6Z-0008jM-Dp; Fri, 12 Jan 2024 12:57:51 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:03 +0000 Message-Id: <20240112125420.514425-72-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 71/88] esp.c: don't clear the SCSI phase when reading ESP_RINTR X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org According to the documentation ESP_RSTAT is cleared (except the STAT_TC bit) when ESP_RINTR is read. This should not include the SCSI bus phase bits which are currently live from the SCSI bus, otherwise the current SCSI phase is lost when clearing an end-of-transfer interrupt. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 604fb9235d..8ea100ee9c 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1128,7 +1128,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) val = s->rregs[ESP_RINTR]; s->rregs[ESP_RINTR] = 0; esp_lower_irq(s); - s->rregs[ESP_RSTAT] &= ~STAT_TC; + s->rregs[ESP_RSTAT] &= STAT_TC | 7; /* * According to the datasheet ESP_RSEQ should be cleared, but as the * emulation currently defers information transfers to the next TI From patchwork Fri Jan 12 12:54:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886067 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=M8v02a4O; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6d-0008jM-Ne; Fri, 12 Jan 2024 12:57:55 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:04 +0000 Message-Id: <20240112125420.514425-73-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 72/88] esp.c: handle TC underflow for DMA SCSI requests X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Detect the case where the guest underflows TC by requesting a DMA transfer which is larger than the available data. If this case is detected, immediately complete the SCSI request and handle any remaining FIFO accesses in the STATUS phase by raising INTR_BS once the FIFO is below the threshold. Note that handling the premature SCSI bus phase change in the case of TC underflow fixes booting EMILE on m68k once again. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 8ea100ee9c..a3e18bb3d7 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -579,6 +579,12 @@ static void esp_do_dma(ESPState *s) s->async_len -= len; s->ti_size -= len; + if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { + /* If the guest underflows TC then terminate SCSI request */ + scsi_req_continue(s->current_req); + return; + } + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); @@ -596,6 +602,12 @@ static void esp_do_dma(ESPState *s) esp_set_tc(s, esp_get_tc(s) - len); esp_raise_drq(s); + if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { + /* If the guest underflows TC then terminate SCSI request */ + scsi_req_continue(s->current_req); + return; + } + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ scsi_req_continue(s->current_req); @@ -630,6 +642,15 @@ static void esp_do_dma(ESPState *s) } } break; + + default: + /* Consume remaining data if the guest underflows TC */ + if (fifo8_num_used(&s->fifo) < 2) { + s->rregs[ESP_RINTR] |= INTR_BS; + esp_raise_irq(s); + esp_lower_drq(s); + } + break; } break; @@ -884,7 +905,9 @@ void esp_command_complete(SCSIRequest *req, size_t resid) esp_set_phase(s, STAT_ST); s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); - esp_lower_drq(s); + + /* Ensure DRQ is set correctly for TC underflow or normal completion */ + esp_dma_ti_check(s); if (s->current_req) { scsi_req_unref(s->current_req); From patchwork Fri Jan 12 12:54:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886068 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6i-0008jM-0z; Fri, 12 Jan 2024 12:57:56 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:05 +0000 Message-Id: <20240112125420.514425-74-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 73/88] esp.c: remove restriction on FIFO read access when DMA memory routines defined X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The latest state machines can handle mixing DMA and non-DMA FIFO access for all SCSI phases except DATA IN and DATA OUT. For DATA IN and DATA OUT phases, the transfer is complete when TC == 0 and the updated logic will now handle TC underflow correctly, which makes it just about impossible to manually manipulate the FIFO during a DMA transfer. Remove the restriction on FIFO read access when DMA memory routines are defined which also allows the NeXTCube machine to pass its self-test. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index a3e18bb3d7..f9d848171f 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1133,14 +1133,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) switch (saddr) { case ESP_FIFO: - if (s->dma_memory_read && s->dma_memory_write && - (s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) { - /* Data out. */ - qemu_log_mask(LOG_UNIMP, "esp: PIO data read not implemented\n"); - s->rregs[ESP_FIFO] = 0; - } else { - s->rregs[ESP_FIFO] = esp_fifo_pop(&s->fifo); - } + s->rregs[ESP_FIFO] = esp_fifo_pop(&s->fifo); val = s->rregs[ESP_FIFO]; break; case ESP_RINTR: From patchwork Fri Jan 12 12:54:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886074 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6i-0008jM-EK; Fri, 12 Jan 2024 12:57:56 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:06 +0000 Message-Id: <20240112125420.514425-75-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 74/88] esp.c: handle non-DMA FIFO writes used to terminate DMA commands X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Certain versions of MacOS send the first 5 bytes of the CDB using DMA and then send the last byte of the CDB by writing to the FIFO. Update the non-DMA state machine to detect the end of the CDB and execute the SCSI command using similar logic as that which already exists for transferring the remainder of the CDB using the ESP TI command. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index f9d848171f..aa7dec71e3 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -787,6 +787,16 @@ static void esp_do_nodma(ESPState *s) } break; + case CMD_SEL | CMD_DMA: + case CMD_SELATN | CMD_DMA: + /* Handle when DMA transfer is terminated by non-DMA FIFO write */ + if (esp_cdb_length(s) && esp_cdb_length(s) == + fifo8_num_used(&s->cmdfifo) - s->cmdfifo_cdb_offset) { + /* Command has been received */ + do_cmd(s); + } + break; + case CMD_SEL: case CMD_SELATN: /* FIFO already contain entire CDB */ From patchwork Fri Jan 12 12:54:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886087 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6i-0008jM-O9; Fri, 12 Jan 2024 12:58:00 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:07 +0000 Message-Id: <20240112125420.514425-76-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 75/88] esp.c: improve ESP_RSEQ logic consolidation X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The ESP_RSEQ logic is scattered in a few places throughout the ESP state machine which is mainly because the ESP_RSEQ register isn't always reset when executing an ESP select command. Once this is done, the ESP_RSEQ register only needs to be updated at the point where the sequencer command completes. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index aa7dec71e3..ca26415d5f 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -230,6 +230,7 @@ static int esp_select(ESPState *s) target = s->wregs[ESP_WBUSID] & BUSID_DID; s->ti_size = 0; + s->rregs[ESP_RSEQ] = SEQ_0; if (s->current_req) { /* Started a new command before the old one finished. Cancel it. */ @@ -241,7 +242,6 @@ static int esp_select(ESPState *s) /* No such drive */ s->rregs[ESP_RSTAT] = 0; s->rregs[ESP_RINTR] = INTR_DC; - s->rregs[ESP_RSEQ] = SEQ_0; esp_raise_irq(s); return -1; } @@ -250,7 +250,6 @@ static int esp_select(ESPState *s) * Note that we deliberately don't raise the IRQ here: this will be done * either in esp_transfer_data() or esp_command_complete() */ - s->rregs[ESP_RSEQ] = SEQ_CD; return 0; } @@ -358,7 +357,6 @@ static void handle_s_without_atn(ESPState *s) } esp_set_phase(s, STAT_CD); - s->rregs[ESP_RSEQ] = SEQ_CD; s->cmdfifo_cdb_offset = 0; if (s->dma) { @@ -380,7 +378,6 @@ static void handle_satn_stop(ESPState *s) } esp_set_phase(s, STAT_MO); - s->rregs[ESP_RSEQ] = SEQ_MO; s->cmdfifo_cdb_offset = 0; if (s->dma) { @@ -456,6 +453,7 @@ static void esp_do_dma(ESPState *s) if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, switch to command phase */ esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; s->cmdfifo_cdb_offset = 1; if (fifo8_num_used(&s->cmdfifo) > 1) { @@ -468,11 +466,11 @@ static void esp_do_dma(ESPState *s) case CMD_SELATNS | CMD_DMA: if (fifo8_num_used(&s->cmdfifo) == 1) { /* First byte received, stop in message out phase */ + s->rregs[ESP_RSEQ] = SEQ_MO; s->cmdfifo_cdb_offset = 1; /* Raise command completion interrupt */ s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; - s->rregs[ESP_RSEQ] = SEQ_CD; esp_raise_irq(s); } break; @@ -482,7 +480,6 @@ static void esp_do_dma(ESPState *s) if (esp_get_tc(s) == 0) { esp_set_phase(s, STAT_CD); s->rregs[ESP_CMD] = 0; - s->rregs[ESP_RSEQ] = SEQ_CD; s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); } @@ -726,6 +723,7 @@ static void esp_do_nodma(ESPState *s) if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, switch to command phase */ esp_set_phase(s, STAT_CD); + s->rregs[ESP_RSEQ] = SEQ_CD; s->cmdfifo_cdb_offset = 1; if (fifo8_num_used(&s->cmdfifo) > 1) { @@ -738,6 +736,7 @@ static void esp_do_nodma(ESPState *s) case CMD_SELATNS: if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, stop in message out phase */ + s->rregs[ESP_RSEQ] = SEQ_MO; s->cmdfifo_cdb_offset = 1; /* Raise command completion interrupt */ @@ -903,6 +902,7 @@ void esp_command_complete(SCSIRequest *req, size_t resid) * and function complete interrupt */ s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_CD; break; case CMD_TI | CMD_DMA: @@ -948,6 +948,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * so raise deferred bus service and function complete interrupt */ s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC; + s->rregs[ESP_RSEQ] = SEQ_CD; break; case CMD_SELATNS | CMD_DMA: @@ -957,6 +958,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len) * completion interrupt */ s->rregs[ESP_RINTR] |= INTR_BS; + s->rregs[ESP_RSEQ] = SEQ_MO; break; case CMD_TI | CMD_DMA: From patchwork Fri Jan 12 12:54:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886106 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=NiYPx/ZV; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6n-0008jM-1e; Fri, 12 Jan 2024 12:58:05 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:08 +0000 Message-Id: <20240112125420.514425-77-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 76/88] esp.c: only transfer non-DMA COMMAND phase data for specific commands X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The contents of the FIFO should only be copied to cmdfifo for ESP commands that are sending data to the SCSI bus, which are the SEL_* commands and the TI command. Otherwise any incoming data should be held in the FIFO as normal. This fixes booting of really old 32-bit SPARC Linux kernels such as Aurelien's debian_etch_sparc_small.qcow2 test image. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index ca26415d5f..17e2db442c 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -757,13 +757,13 @@ static void esp_do_nodma(ESPState *s) break; case STAT_CD: - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - switch (s->rregs[ESP_CMD]) { case CMD_TI: + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_handle_ti_cmd(cmdlen); @@ -788,6 +788,11 @@ static void esp_do_nodma(ESPState *s) case CMD_SEL | CMD_DMA: case CMD_SELATN | CMD_DMA: + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + /* Handle when DMA transfer is terminated by non-DMA FIFO write */ if (esp_cdb_length(s) && esp_cdb_length(s) == fifo8_num_used(&s->cmdfifo) - s->cmdfifo_cdb_offset) { @@ -798,7 +803,11 @@ static void esp_do_nodma(ESPState *s) case CMD_SEL: case CMD_SELATN: - /* FIFO already contain entire CDB */ + /* FIFO already contain entire CDB: copy to cmdfifo and execute */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + do_cmd(s); break; } From patchwork Fri Jan 12 12:54:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886077 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6r-0008jM-BB; Fri, 12 Jan 2024 12:58:09 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:09 +0000 Message-Id: <20240112125420.514425-78-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 77/88] esp.c: only transfer non-DMA MESSAGE OUT phase data for specific commands X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The contents of the FIFO should only be copied to cmdfifo for ESP commands that are sending data to the SCSI bus, which are the SEL_* commands and the TI command. Otherwise any incoming data should be held in the FIFO as normal. This fixes booting of NetBSD m68k under the Q800 machine once again. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 17e2db442c..d63039af89 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -712,14 +712,13 @@ static void esp_do_nodma(ESPState *s) switch (esp_get_phase(s)) { case STAT_MO: - /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - s->cmdfifo_cdb_offset += n; - switch (s->rregs[ESP_CMD]) { case CMD_SELATN: + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, switch to command phase */ esp_set_phase(s, STAT_CD); @@ -734,6 +733,11 @@ static void esp_do_nodma(ESPState *s) break; case CMD_SELATNS: + /* Copy one byte from FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, 1); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, stop in message out phase */ s->rregs[ESP_RSEQ] = SEQ_MO; @@ -746,6 +750,11 @@ static void esp_do_nodma(ESPState *s) break; case CMD_TI: + /* Copy FIFO into cmdfifo */ + n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + n = MIN(fifo8_num_free(&s->cmdfifo), n); + fifo8_push_all(&s->cmdfifo, buf, n); + /* ATN remains asserted until FIFO empty */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); esp_set_phase(s, STAT_CD); From patchwork Fri Jan 12 12:54:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886109 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6v-0008jM-L1; Fri, 12 Jan 2024 12:58:13 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:10 +0000 Message-Id: <20240112125420.514425-79-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 78/88] esp.c: consolidate DMA and PDMA logic in DATA OUT phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This allows the removal of duplicate logic shared between the two implementations. Note that we restrict esp_raise_drq() to PDMA to help reduce the log verbosity for normal DMA. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 35 ++++++++++++----------------------- 1 file changed, 12 insertions(+), 23 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index d63039af89..394774c379 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -521,40 +521,29 @@ static void esp_do_dma(ESPState *s) if (len > s->async_len) { len = s->async_len; } + if (s->dma_memory_read) { s->dma_memory_read(s->dma_opaque, s->async_buf, len); - esp_set_tc(s, esp_get_tc(s) - len); - s->async_buf += len; - s->async_len -= len; - s->ti_size += len; - - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - return; - } - - esp_dma_ti_check(s); } else { /* Copy FIFO data to device */ len = MIN(s->async_len, ESP_FIFO_SZ); len = MIN(len, fifo8_num_used(&s->fifo)); - n = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); - s->async_buf += n; - s->async_len -= n; - s->ti_size += n; - + len = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); esp_raise_drq(s); + } - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - return; - } + s->async_buf += len; + s->async_len -= len; + s->ti_size += len; - esp_dma_ti_check(s); + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + return; } + + esp_dma_ti_check(s); break; case STAT_DI: From patchwork Fri Jan 12 12:54:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886090 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=J1odOXDL; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6z-0008jM-VP; Fri, 12 Jan 2024 12:58:18 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:11 +0000 Message-Id: <20240112125420.514425-80-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 79/88] esp.c: consolidate DMA and PDMA logic in DATA IN phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This allows the removal of duplicate logic shared between the two implementations. Note that we restrict esp_raise_drq() to PDMA to help reduce the log verbosity for normal DMA. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 51 +++++++++++++++++---------------------------------- 1 file changed, 17 insertions(+), 34 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 394774c379..49fc059eaa 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -557,51 +557,34 @@ static void esp_do_dma(ESPState *s) if (len > s->async_len) { len = s->async_len; } + if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, s->async_buf, len); - - esp_set_tc(s, esp_get_tc(s) - len); - s->async_buf += len; - s->async_len -= len; - s->ti_size -= len; - - if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { - /* If the guest underflows TC then terminate SCSI request */ - scsi_req_continue(s->current_req); - return; - } - - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - return; - } - - esp_dma_ti_check(s); } else { /* Copy device data to FIFO */ len = MIN(len, fifo8_num_free(&s->fifo)); fifo8_push_all(&s->fifo, s->async_buf, len); - s->async_buf += len; - s->async_len -= len; - s->ti_size -= len; - esp_set_tc(s, esp_get_tc(s) - len); esp_raise_drq(s); + } - if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { - /* If the guest underflows TC then terminate SCSI request */ - scsi_req_continue(s->current_req); - return; - } + s->async_buf += len; + s->async_len -= len; + s->ti_size -= len; + esp_set_tc(s, esp_get_tc(s) - len); - if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - return; - } + if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { + /* If the guest underflows TC then terminate SCSI request */ + scsi_req_continue(s->current_req); + return; + } - esp_dma_ti_check(s); + if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + return; } + + esp_dma_ti_check(s); break; case STAT_ST: From patchwork Fri Jan 12 12:54:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886061 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=BFa0RnH8; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGN5LkHz1yPm for ; 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bh=isg4eqT6mpj+u8nlsxSn/JAamHZfsm6I9p691tnNUXo=; b=BFa0RnH8P07+y4L2kkLO0btmcq Jzs/CVJdBBk4nM88IKcHXcvCNSWb9GQ487cDQzecKko0Mp4ushY3oc1O2oCg3R+Q2ZWGkFNUPo9F4 +dfqMykC6/I5nVUFQJ1F51o00GI/LxL2KePcNTDXMsIWXpjeZv98wvMF5/OceEYCFI4HJz6vIRu66 gRW7Qpb/kjkDhgJ1CDTvy1W5udaakCdveMr2N9imQQ0gOurCD+gdE51eJrOnn323aMkhAas7tU1uW WubmOkAvA/WA5UUt8g7JdrrFXzShxl7erVTxXMm0ro9dPBfYbMeJ7X/NUCYPbozZ1VAlIlyc6flh/ FjmL3f4TFkMJ+YDMzJ+HLIn8RwkhFShLyvWsHF1tP62NYuFwSj7+q/QDTbblQqW0O603OAX8IR3bg Zc98MB/StsBEII/fOxs8nzcG+PUC9qvQmrGgRhRB1HhOK3D1usTFmtiL025xM0r1vrui09p55FTQo /UyE/ZFvXtx7M8aljcjxNhdQcqPktFYmnMW3cEnxlyez3R093k2BbMA1x32ntUhyVS635r5o5Qtac 0rqnNE7dKOPIMg/5NwIgyXxe8IhpT0713kF1T/aa3E/A33uHjVewRVoMlojsDJOQX8zkjL4rBBD6N Nkoi+eZPG/8KwzqMrPOFDXzGGaItLX/iXqFlfNMmM=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH74-0008jM-8D; Fri, 12 Jan 2024 12:58:22 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:12 +0000 Message-Id: <20240112125420.514425-81-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 80/88] esp.c: consolidate DMA and PDMA logic in MESSAGE OUT phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This allows the removal of duplicate logic shared between the two implementations. Note that we restrict esp_raise_drq() to PDMA to help reduce the log verbosity for normal DMA. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 49fc059eaa..ae65c2ef37 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -436,17 +436,15 @@ static void esp_do_dma(ESPState *s) if (s->dma_memory_read) { len = MIN(len, fifo8_num_free(&s->cmdfifo)); s->dma_memory_read(s->dma_opaque, buf, len); - fifo8_push_all(&s->cmdfifo, buf, len); esp_set_tc(s, esp_get_tc(s) - len); - s->cmdfifo_cdb_offset += len; } else { - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - s->cmdfifo_cdb_offset += n; + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + esp_raise_drq(s); } - esp_raise_drq(s); + fifo8_push_all(&s->cmdfifo, buf, len); + s->cmdfifo_cdb_offset += len; switch (s->rregs[ESP_CMD]) { case CMD_SELATN | CMD_DMA: From patchwork Fri Jan 12 12:54:13 2024 Content-Type: text/plain; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH78-0008jM-Hz; Fri, 12 Jan 2024 12:58:26 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:13 +0000 Message-Id: <20240112125420.514425-82-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 81/88] esp.c: remove redundant n variable in PDMA COMMAND phase X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This variable can be replaced by the existing len variable. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index ae65c2ef37..8ef6d203e0 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -427,7 +427,6 @@ static void esp_do_dma(ESPState *s) { uint32_t len, cmdlen; uint8_t buf[ESP_CMDFIFO_SZ]; - int n; len = esp_get_tc(s); @@ -494,10 +493,9 @@ static void esp_do_dma(ESPState *s) fifo8_push_all(&s->cmdfifo, buf, len); esp_set_tc(s, esp_get_tc(s) - len); } else { - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); - + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); esp_raise_drq(s); } trace_esp_handle_ti_cmd(cmdlen); From patchwork Fri Jan 12 12:54:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886083 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH7C-0008jM-Rg; Fri, 12 Jan 2024 12:58:27 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:14 +0000 Message-Id: <20240112125420.514425-83-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 82/88] esp.c: consolidate DMA and PDMA logic in STATUS and MESSAGE IN phases X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This allows the removal of duplicate logic shared between the two implementations. Note that we restrict esp_raise_drq() to PDMA to help reduce the log verbosity for normal DMA. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 8ef6d203e0..879e311bc4 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -593,12 +593,11 @@ static void esp_do_dma(ESPState *s) if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); } else { fifo8_push_all(&s->fifo, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); } + esp_set_tc(s, esp_get_tc(s) - len); esp_set_phase(s, STAT_MI); if (esp_get_tc(s) > 0) { @@ -629,12 +628,12 @@ static void esp_do_dma(ESPState *s) if (s->dma_memory_write) { s->dma_memory_write(s->dma_opaque, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); } else { fifo8_push_all(&s->fifo, buf, len); - esp_set_tc(s, esp_get_tc(s) - len); } + esp_set_tc(s, esp_get_tc(s) - len); + /* Raise end of command interrupt */ s->rregs[ESP_RINTR] |= INTR_FC; esp_raise_irq(s); From patchwork Fri Jan 12 12:54:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886086 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=TDlCV48h; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMLM4Bbrz1yPm for ; Sat, 13 Jan 2024 00:08:59 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOHDq-0006O8-53; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH7D-0008jM-5x; Fri, 12 Jan 2024 12:58:31 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:15 +0000 Message-Id: <20240112125420.514425-84-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 83/88] esp.c: replace n variable with len in esp_do_nodma() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This brings esp_do_nodma() in line with esp_do_dma(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 40 ++++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 879e311bc4..73379a3c65 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -675,16 +675,16 @@ static void esp_do_nodma(ESPState *s) { uint8_t buf[ESP_FIFO_SZ]; uint32_t cmdlen; - int n; + int len; switch (esp_get_phase(s)) { case STAT_MO: switch (s->rregs[ESP_CMD]) { case CMD_SELATN: /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, switch to command phase */ @@ -701,9 +701,9 @@ static void esp_do_nodma(ESPState *s) case CMD_SELATNS: /* Copy one byte from FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, 1); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, 1); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); if (fifo8_num_used(&s->cmdfifo) >= 1) { /* First byte received, stop in message out phase */ @@ -718,9 +718,9 @@ static void esp_do_nodma(ESPState *s) case CMD_TI: /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); /* ATN remains asserted until FIFO empty */ s->cmdfifo_cdb_offset = fifo8_num_used(&s->cmdfifo); @@ -736,9 +736,9 @@ static void esp_do_nodma(ESPState *s) switch (s->rregs[ESP_CMD]) { case CMD_TI: /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); cmdlen = fifo8_num_used(&s->cmdfifo); trace_esp_handle_ti_cmd(cmdlen); @@ -754,7 +754,7 @@ static void esp_do_nodma(ESPState *s) * service interrupt to indicate transfer complete. Otherwise * defer until the next FIFO write. */ - if (n) { + if (len) { /* Raise interrupt to indicate transfer complete */ s->rregs[ESP_RINTR] |= INTR_BS; esp_raise_irq(s); @@ -765,9 +765,9 @@ static void esp_do_nodma(ESPState *s) case CMD_SEL | CMD_DMA: case CMD_SELATN | CMD_DMA: /* Copy FIFO into cmdfifo */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); /* Handle when DMA transfer is terminated by non-DMA FIFO write */ if (esp_cdb_length(s) && esp_cdb_length(s) == @@ -780,9 +780,9 @@ static void esp_do_nodma(ESPState *s) case CMD_SEL: case CMD_SELATN: /* FIFO already contain entire CDB: copy to cmdfifo and execute */ - n = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); - n = MIN(fifo8_num_free(&s->cmdfifo), n); - fifo8_push_all(&s->cmdfifo, buf, n); + len = esp_fifo_pop_buf(&s->fifo, buf, fifo8_num_used(&s->fifo)); + len = MIN(fifo8_num_free(&s->cmdfifo), len); + fifo8_push_all(&s->cmdfifo, buf, len); do_cmd(s); break; From patchwork Fri Jan 12 12:54:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886095 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=mF2aN2ml; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMQx1M3Yz1yPy for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The Transfer Pad command is used to either drop incoming FIFO data during the DATA IN phase or generate a series of zero bytes in the FIFO during the DATA OUT phase. Implement the DMA Transfer Pad command for the DATA phases which is used by the NeXTCube firmware in the DATA IN phase to ignore part of the incoming SCSI data as it is copied into memory. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 97 ++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 69 insertions(+), 28 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 73379a3c65..5583b3eb56 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -387,6 +387,15 @@ static void handle_satn_stop(ESPState *s) } } +static void handle_pad(ESPState *s) +{ + if (s->dma) { + esp_do_dma(s); + } else { + esp_do_nodma(s); + } +} + static void write_response(ESPState *s) { trace_esp_write_response(s->status); @@ -518,20 +527,38 @@ static void esp_do_dma(ESPState *s) len = s->async_len; } - if (s->dma_memory_read) { - s->dma_memory_read(s->dma_opaque, s->async_buf, len); - esp_set_tc(s, esp_get_tc(s) - len); - } else { - /* Copy FIFO data to device */ - len = MIN(s->async_len, ESP_FIFO_SZ); - len = MIN(len, fifo8_num_used(&s->fifo)); - len = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); - esp_raise_drq(s); - } + switch (s->rregs[ESP_CMD]) { + case CMD_TI | CMD_DMA: + if (s->dma_memory_read) { + s->dma_memory_read(s->dma_opaque, s->async_buf, len); + esp_set_tc(s, esp_get_tc(s) - len); + } else { + /* Copy FIFO data to device */ + len = MIN(s->async_len, ESP_FIFO_SZ); + len = MIN(len, fifo8_num_used(&s->fifo)); + len = esp_fifo_pop_buf(&s->fifo, s->async_buf, len); + esp_raise_drq(s); + } - s->async_buf += len; - s->async_len -= len; - s->ti_size += len; + s->async_buf += len; + s->async_len -= len; + s->ti_size += len; + break; + + case CMD_PAD | CMD_DMA: + /* Copy TC zero bytes into the incoming stream */ + if (!s->dma_memory_read) { + len = MIN(s->async_len, ESP_FIFO_SZ); + len = MIN(len, fifo8_num_free(&s->fifo)); + } + + memset(s->async_buf, 0, len); + + s->async_buf += len; + s->async_len -= len; + s->ti_size += len; + break; + } if (s->async_len == 0 && fifo8_num_used(&s->fifo) < 2) { /* Defer until the scsi layer has completed */ @@ -554,19 +581,35 @@ static void esp_do_dma(ESPState *s) len = s->async_len; } - if (s->dma_memory_write) { - s->dma_memory_write(s->dma_opaque, s->async_buf, len); - } else { - /* Copy device data to FIFO */ - len = MIN(len, fifo8_num_free(&s->fifo)); - fifo8_push_all(&s->fifo, s->async_buf, len); - esp_raise_drq(s); - } + switch (s->rregs[ESP_CMD]) { + case CMD_TI | CMD_DMA: + if (s->dma_memory_write) { + s->dma_memory_write(s->dma_opaque, s->async_buf, len); + } else { + /* Copy device data to FIFO */ + len = MIN(len, fifo8_num_free(&s->fifo)); + fifo8_push_all(&s->fifo, s->async_buf, len); + esp_raise_drq(s); + } + + s->async_buf += len; + s->async_len -= len; + s->ti_size -= len; + esp_set_tc(s, esp_get_tc(s) - len); + break; + + case CMD_PAD | CMD_DMA: + /* Drop TC bytes from the incoming stream */ + if (!s->dma_memory_write) { + len = MIN(len, fifo8_num_free(&s->fifo)); + } - s->async_buf += len; - s->async_len -= len; - s->ti_size -= len; - esp_set_tc(s, esp_get_tc(s) - len); + s->async_buf += len; + s->async_len -= len; + s->ti_size -= len; + esp_set_tc(s, esp_get_tc(s) - len); + break; + } if (s->async_len == 0 && s->ti_size == 0 && esp_get_tc(s)) { /* If the guest underflows TC then terminate SCSI request */ @@ -1087,9 +1130,7 @@ static void esp_run_cmd(ESPState *s) break; case CMD_PAD: trace_esp_mem_writeb_cmd_pad(cmd); - s->rregs[ESP_RSTAT] = STAT_TC; - s->rregs[ESP_RINTR] |= INTR_FC; - s->rregs[ESP_RSEQ] = 0; + handle_pad(s); break; case CMD_SATN: trace_esp_mem_writeb_cmd_satn(cmd); From patchwork Fri Jan 12 12:54:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886062 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=Y18DuqJ5; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMGN6Mrtz1yQ1 for ; 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envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The IRQ represented by irq_data is actually the DRQ (DMA request) line so rename it accordingly. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 8 ++++---- include/hw/scsi/esp.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 5583b3eb56..fb68606f00 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -62,13 +62,13 @@ static void esp_lower_irq(ESPState *s) static void esp_raise_drq(ESPState *s) { - qemu_irq_raise(s->irq_data); + qemu_irq_raise(s->drq_irq); trace_esp_raise_drq(); } static void esp_lower_drq(ESPState *s) { - qemu_irq_lower(s->irq_data); + qemu_irq_lower(s->drq_irq); trace_esp_lower_drq(); } @@ -1062,7 +1062,7 @@ void esp_hard_reset(ESPState *s) static void esp_soft_reset(ESPState *s) { qemu_irq_lower(s->irq); - qemu_irq_lower(s->irq_data); + qemu_irq_lower(s->drq_irq); esp_hard_reset(s); } @@ -1489,7 +1489,7 @@ static void sysbus_esp_realize(DeviceState *dev, Error **errp) } sysbus_init_irq(sbd, &s->irq); - sysbus_init_irq(sbd, &s->irq_data); + sysbus_init_irq(sbd, &s->drq_irq); assert(sysbus->it_shift != -1); s->chip_id = TCHI_FAS100A; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index 39b416f538..c6e8b64e20 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -25,7 +25,7 @@ struct ESPState { uint8_t rregs[ESP_REGS]; uint8_t wregs[ESP_REGS]; qemu_irq irq; - qemu_irq irq_data; + qemu_irq drq_irq; uint8_t chip_id; bool tchi_written; int32_t ti_size; From patchwork Fri Jan 12 12:54:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886079 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=O1wtN+YL; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH7M-0008jM-2Q; Fri, 12 Jan 2024 12:58:40 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:18 +0000 Message-Id: <20240112125420.514425-87-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 86/88] esp.c: keep track of the DRQ state during DMA X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently the DRQ IRQ is updated every time DMA data is sent/received which is both inefficient and causes excessive logging of the DRQ state. Add a new drq_state bool that only updates the DRQ IRQ if its state changes. This commit adds the new drq_state bool to the migration state: since the version number has already been increased earlier in the series, there is no need to repeat it again here. The DRQ IRQ is (currently) only used for PDMA transfers which already have a migration break in this series so there are no problems setting its value post-load. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 15 +++++++++++---- include/hw/scsi/esp.h | 1 + 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index fb68606f00..04615d8b5f 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -62,14 +62,20 @@ static void esp_lower_irq(ESPState *s) static void esp_raise_drq(ESPState *s) { - qemu_irq_raise(s->drq_irq); - trace_esp_raise_drq(); + if (!(s->drq_state)) { + qemu_irq_raise(s->drq_irq); + trace_esp_raise_drq(); + s->drq_state = true; + } } static void esp_lower_drq(ESPState *s) { - qemu_irq_lower(s->drq_irq); - trace_esp_lower_drq(); + if (s->drq_state) { + qemu_irq_lower(s->drq_irq); + trace_esp_lower_drq(); + s->drq_state = false; + } } void esp_dma_enable(ESPState *s, int irq, int level) @@ -1358,6 +1364,7 @@ const VMStateDescription vmstate_esp = { VMSTATE_UINT8_TEST(mig_ti_cmd, ESPState, esp_is_between_version_5_and_6), VMSTATE_UINT8_TEST(lun, ESPState, esp_is_version_6), + VMSTATE_BOOL(drq_state, ESPState), VMSTATE_END_OF_LIST() }, }; diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h index c6e8b64e20..533d856aa3 100644 --- a/include/hw/scsi/esp.h +++ b/include/hw/scsi/esp.h @@ -26,6 +26,7 @@ struct ESPState { uint8_t wregs[ESP_REGS]; qemu_irq irq; qemu_irq drq_irq; + bool drq_state; uint8_t chip_id; bool tchi_written; int32_t ti_size; From patchwork Fri Jan 12 12:54:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886080 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=oPS5vSYb; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; 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Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH7Q-0008jM-C2; Fri, 12 Jan 2024 12:58:40 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:19 +0000 Message-Id: <20240112125420.514425-88-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 87/88] esp.c: switch TypeInfo registration to use DEFINE_TYPES() macro X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The use of the DEFINE_TYPES() macro will soon be recommended over the use of calling type_init() directly. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé --- hw/scsi/esp.c | 39 +++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 22 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 04615d8b5f..b8762d5ee0 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1549,14 +1549,6 @@ static void sysbus_esp_class_init(ObjectClass *klass, void *data) set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } -static const TypeInfo sysbus_esp_info = { - .name = TYPE_SYSBUS_ESP, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_init = sysbus_esp_init, - .instance_size = sizeof(SysBusESPState), - .class_init = sysbus_esp_class_init, -}; - static void esp_finalize(Object *obj) { ESPState *s = ESP(obj); @@ -1582,19 +1574,22 @@ static void esp_class_init(ObjectClass *klass, void *data) set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } -static const TypeInfo esp_info = { - .name = TYPE_ESP, - .parent = TYPE_DEVICE, - .instance_init = esp_init, - .instance_finalize = esp_finalize, - .instance_size = sizeof(ESPState), - .class_init = esp_class_init, +static const TypeInfo esp_info_types[] = { + { + .name = TYPE_SYSBUS_ESP, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_init = sysbus_esp_init, + .instance_size = sizeof(SysBusESPState), + .class_init = sysbus_esp_class_init, + }, + { + .name = TYPE_ESP, + .parent = TYPE_DEVICE, + .instance_init = esp_init, + .instance_finalize = esp_finalize, + .instance_size = sizeof(ESPState), + .class_init = esp_class_init, + }, }; -static void esp_register_types(void) -{ - type_register_static(&sysbus_esp_info); - type_register_static(&esp_info); -} - -type_init(esp_register_types) +DEFINE_TYPES(esp_info_types) From patchwork Fri Jan 12 12:54:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1886091 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (4096-bit key; unprotected) header.d=ilande.co.uk header.i=@ilande.co.uk header.a=rsa-sha256 header.s=20220518 header.b=gD9pWl1D; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TBMNh4msRz1yPy for ; Sat, 13 Jan 2024 00:11:00 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOHDl-0005a6-2b; Fri, 12 Jan 2024 08:05:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHDN-0004ek-RH for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:04:57 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHDI-0003AW-R0 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:04:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=smlVZmV9rs78GsLFFCye6cQ56AeVA+Z6TX5m3wCBznI=; b=gD9pWl1DA0Tg8GR5qxvqAL0QF5 d6MggctbhvMeI6mmCs04lVEr8OIWSNn7gRc8Yx4GMPMyMQDJGUNGBY61Q4zSQQlZe1V0A8nHAnymr lyrWDovjH0VJuBVImsF8Bld1bmTNgACCV2gnTtdQaQBV4ulJSovVq123QlOwlUtG7E2UIwIe+WJ2a Sja1wDHO8+8vyHk3o5fgMfF7ygo3QBawXFVweKh5VU/8XA3md7TWJ04F0Ouu9QRjHfOwRRxwPfst/ x5ndvMlFx/2Fd7xwpJOjy7ggzg5nGCiJQp0WXZK4qopyq+SLVmzeotyc6d+OTI1JWItrvOb2nNJfB 0ycb7HpWgJtnCm2tMZ2OViyiw2zH8/N2PPASyFttyV6tRz48G+lhQA81NlKh9ci5i/4MJUGMRkis/ U7/zaZojlU1DbxmrZCu2bx4XepAjtxbnSTRItq4KdlB1CWjRh7WLDHxojcYLWmbbe0OcC7gDHljX0 A799Vz69Boaz76CU2NB/RfjgXM4ui5kGExNQCsg4oUUq1/Cae7NrO7H0hzDXCE909jDH3ovqX6VMm yHu7g3uzEleA2c+76iy8XEZqaBBq1gQgMiH0O9yRhUPNHX50y8rdPxIu2DFKd6xNvSdEb8NGljXIE QCbmJ4y5oZPMMUNReNgdSjbA0YXrICGyd2Mv9HHVg=; Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH7Q-0008jM-PF; Fri, 12 Jan 2024 12:58:40 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:20 +0000 Message-Id: <20240112125420.514425-89-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 88/88] esp.c: add my copyright to the file X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This series has involved rewriting and/or updating a considerable part of the ESP emulation so update the copyright in esp.c to reflect this. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index b8762d5ee0..590ff99744 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -3,6 +3,7 @@ * * Copyright (c) 2005-2006 Fabrice Bellard * Copyright (c) 2012 Herve Poussineau + * Copyright (c) 2023 Mark Cave-Ayland * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal