From patchwork Sat Oct 21 21:54:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francisco Iglesias X-Patchwork-Id: 828982 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="HDdYjcYQ"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yKMBp4Wpwz9sBW for ; Sun, 22 Oct 2017 12:19:30 +1100 (AEDT) Received: from localhost ([::1]:59716 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e64vI-0007sg-NX for incoming@patchwork.ozlabs.org; Sat, 21 Oct 2017 21:19:28 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47532) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e61ix-0000Nw-Tr for qemu-devel@nongnu.org; Sat, 21 Oct 2017 17:54:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e61it-00024j-Or for qemu-devel@nongnu.org; Sat, 21 Oct 2017 17:54:31 -0400 Received: from mail-lf0-x243.google.com ([2a00:1450:4010:c07::243]:51664) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1e61it-0001wV-Gy for qemu-devel@nongnu.org; Sat, 21 Oct 2017 17:54:27 -0400 Received: by mail-lf0-x243.google.com with SMTP id r129so16443436lff.8 for ; Sat, 21 Oct 2017 14:54:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=eLxtz3Pm0pnfqs7Y2sSFhB2l8YHQQDyonacSM6zGzic=; b=HDdYjcYQHohFBuMusWUQCReaWGNR0pSQmOd3kyuNi/HOTyv98MzB1dhMyXCTc7P//K aHDK/L7bwjIt3Oam6B7WBa02VawjF7ivToQM8g9y5xqPq+sBUc8/qpRcf08Qy50NCGEI u8bIjdr64yfxerOFY6UItAPwoPuWQTMu2DNA69vK3+qlTcNJVTwV+UTY+NrucGkytbo+ I0CQg50chfpwE7yN/IARKGunjPXGDEBmXPFumzakTU9yOC1ngQWIkbEp3ELHPLV/jD31 ZvcBbZO0bNAQ8uc6aUZ4o5wk4B4WuhrtZJeSRYXgPglKAvedq8XgNRIw/gbXRxVt2kdV 5L3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=eLxtz3Pm0pnfqs7Y2sSFhB2l8YHQQDyonacSM6zGzic=; b=O4HVsm0Uq58VO7WLugPNAjrWJgN30OHKk39b/coZc6nGBkEV22s7N4WtUtDWOZz9hC 7Rje4DAGU/Yv5b5klFy7PZgDr3dzRCKqcRJZb6jyw1dgUMldZxDtY86dvRo0Ahs1Va+K 3a5CJX0vYaiSmBQaZyGqM3a5s8E45edwBBh9aMedEqabq0XyTHoYiZiBZd71KaQtJb/+ 4GqCPP6S8k28vb6bxzAi1zZ6uinHGk5GKjkleQriwFWKOl+a+zmJN3yY4CdkZxbajV9E jtj76BbBF4goBDoqJuTEs6otQTSO79nd05piMiAU6abRp9BI1D1dUSFdTbkpNRIvAikv 4HMg== X-Gm-Message-State: AMCzsaVGPjdPRik8ix0B7XmoxYAY4LvyTtbMvVo6JvOuGvYjHvocUa7r mgo7/a50RgFMcaY4mVNEMaQI9WzP X-Google-Smtp-Source: ABhQp+SF4b22zRS2U9T2X5AV+V0JNaEvrh8Qitte0NmIhx3Z9bdpunaNKt6EYeSfTnM3ydC7ftHuXg== X-Received: by 10.46.0.23 with SMTP id 23mr4375885lja.187.1508622864701; Sat, 21 Oct 2017 14:54:24 -0700 (PDT) Received: from localhost.localdomain (c83-254-152-225.bredband.comhem.se. [83.254.152.225]) by smtp.gmail.com with ESMTPSA id q87sm731173lfg.35.2017.10.21.14.54.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 21 Oct 2017 14:54:23 -0700 (PDT) From: Francisco Iglesias To: qemu-devel@nongnu.org Date: Sat, 21 Oct 2017 23:54:09 +0200 Message-Id: <20171021215420.19787-2-frasse.iglesias@gmail.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20171021215420.19787-1-frasse.iglesias@gmail.com> References: <20171021215420.19787-1-frasse.iglesias@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4010:c07::243 X-Mailman-Approved-At: Sat, 21 Oct 2017 21:15:24 -0400 Subject: [Qemu-devel] [PATCH v2 01/12] m25p80: Add support for continuous read out of RDSR and READ_FSR X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: edgari@xilinx.com, alistai@xilinx.com, francisco.iglesias@feimtech.se Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add support for continuous read out of the RDSR and READ_FSR status registers until the chip select is deasserted. Signed-off-by: Francisco Iglesias --- hw/block/m25p80.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index a2438b9..2971519 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -423,6 +423,7 @@ typedef struct Flash { uint8_t data[M25P80_INTERNAL_DATA_BUFFER_SZ]; uint32_t len; uint32_t pos; + bool data_read_loop; uint8_t needed_bytes; uint8_t cmd_in_progress; uint32_t cur_addr; @@ -983,6 +984,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) } s->pos = 0; s->len = 1; + s->data_read_loop = true; s->state = STATE_READING_DATA; break; @@ -993,6 +995,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) } s->pos = 0; s->len = 1; + s->data_read_loop = true; s->state = STATE_READING_DATA; break; @@ -1133,6 +1136,7 @@ static int m25p80_cs(SSISlave *ss, bool select) s->pos = 0; s->state = STATE_IDLE; flash_sync_dirty(s, -1); + s->data_read_loop = false; } DB_PRINT_L(0, "%sselect\n", select ? "de" : ""); @@ -1198,7 +1202,9 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx) s->pos++; if (s->pos == s->len) { s->pos = 0; - s->state = STATE_IDLE; + if (!s->data_read_loop) { + s->state = STATE_IDLE; + } } break;