From patchwork Sun Mar 24 19:17:04 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: 1915356 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=wt9K2ENo; 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 4V2m9516Wxz1yXr for ; Mon, 25 Mar 2024 06:19:53 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1roTMN-0008Rt-QQ; Sun, 24 Mar 2024 15:18:23 -0400 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 1roTMM-0008Ez-A1 for qemu-devel@nongnu.org; Sun, 24 Mar 2024 15:18:22 -0400 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 1roTMK-0005Nd-Qa for qemu-devel@nongnu.org; Sun, 24 Mar 2024 15:18:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:Content-Type: MIME-Version:References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To: Cc: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=UknKXcdUNSvY0ijF9Z/LnlJlCg6n6wA0k3it0IJ3DeE=; b=wt9K2ENog3UO7eTYcmDCTjp9fV EfCS9e0N0t/H8VGAHs9+y5iwyOiFPoy5NaXjudR+QhjnOhxrAO5aNiBS0/cNly0dYP9gr5V4Idvdh 42lr1CyYzRi31tDnZQGtGQBjDwhDYxH5G+BlL7veoAIyHTYBCytGu84Uxy/vvGu68HCbzTzqP674C jeQeeWY7LApYvqTxuDwXTp0FLLHIOxnf0Xa//u+thQyDDMQ/Q5hHxYPuQwpB+/5wgcKC1XK6ZxmWw nCKxOW5StolVDLLWg2jfmkrEK1zScKRf7GNQiiHqBNtgulPPIMnnI5oZGy7bx7d2Gt+ESbLKNuJmF WaAi1QoUxqWlpK5+O9JRu5FCOKm4TS96IcykhEDsfsb/v6jpU92WL8vfTLd+fc10Y7Bysoet3nu+s h4/2Q8GNfhKFRPGDDx1Tm6asyPeASafiPq06+s+sF734HEhg67fT/Vu1cZ93lV5AxAXWpQ5soPfB2 RK1XDzk95BjhWq7YvjsCYykuUfcqnwTlK33KDOUxkMNOIZdhm2OBW3W4AmY5W9Ru6Gk0B852RrlF/ oTTRzoXQ6b8tRKejLI1/3iP/tmerNRagkKQnnDCXV/HaUmTJYYhBofEivh1V5HcEYZptad6wnob1T 8KtUoV3WfW+Knlw6dzGiywo5xYhIxF+csNGXQs514=; Received: from [2a00:23c4:8bb3:1000:d8cc:63fe:ef32:8539] (helo=localhost.localdomain) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1roTLM-0000dj-0u; Sun, 24 Mar 2024 19:17:24 +0000 From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, laurent@vivier.eu, qemu-devel@nongnu.org Date: Sun, 24 Mar 2024 19:17:04 +0000 Message-Id: <20240324191707.623175-16-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240324191707.623175-1-mark.cave-ayland@ilande.co.uk> References: <20240324191707.623175-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a00:23c4:8bb3:1000:d8cc:63fe:ef32:8539 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v3 15/17] esp.c: update esp_fifo_{push, pop}() to call esp_update_drq() 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 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 ensures that the DRQ line is always set correctly when reading/writing single bytes to/from the FIFO. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé --- hw/scsi/esp.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6fd1a12f23..4895181ec1 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -170,10 +170,11 @@ static void esp_fifo_push(ESPState *s, uint8_t val) { if (fifo8_num_used(&s->fifo) == s->fifo.capacity) { trace_esp_error_fifo_overrun(); - return; + } else { + fifo8_push(&s->fifo, val); } - fifo8_push(&s->fifo, val); + esp_update_drq(s); } static void esp_fifo_push_buf(ESPState *s, uint8_t *buf, int len) @@ -184,11 +185,16 @@ static void esp_fifo_push_buf(ESPState *s, uint8_t *buf, int len) static uint8_t esp_fifo_pop(ESPState *s) { + uint8_t val; + if (fifo8_is_empty(&s->fifo)) { - return 0; + val = 0; + } else { + val = fifo8_pop(&s->fifo); } - return fifo8_pop(&s->fifo); + esp_update_drq(s); + return val; } static uint32_t esp_fifo8_pop_buf(Fifo8 *fifo, uint8_t *dest, int maxlen)