From nobody Tue Nov 18 10:39:17 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1609343447; cv=none; d=zohomail.com; s=zohoarc; b=GVTVcC58ZBeY+6Q8MhBqrJ5zjuWIeRSHHMEJxGuO4kiDlIm+7dV+PHW3nvlEH78jIXoa9OTuGRDG4VPAzD0CPboMl5diNWcrtXXjjuqm3V8QIKdw+fcpAePeZ+Om31+raF4kkaRJHBuuXt80Qj60Ax5CkhYLKVYAnCSj3Cuq1CA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1609343447; h=Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=3TEIv8PGkb8TDSf7Io/ILtuNIHWgk7N/DxS6Sox1VFU=; b=nJePdyTGssmxxcVRTSzs4obzve9IQ5agOoa0nOWfipo4AnUd2E0coPYuOlKFo3D7Qkw8iOOlwgOmRrXs51kI8PHGob6Cn3a6qUXIJ3SLa18hgPDT2aYalgmbBRHuQrriohTolNghms2SwzrkoOHgydGl+blYHXGL9k94hpAxWbI= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1609343447158344.39487952276943; Wed, 30 Dec 2020 07:50:47 -0800 (PST) Received: from localhost ([::1]:41400 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kudkM-0004oJ-02 for importer@patchew.org; Wed, 30 Dec 2020 10:50:46 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51204) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kudZS-0001KX-2i for qemu-devel@nongnu.org; Wed, 30 Dec 2020 10:39:31 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:50870 helo=mail.default.ilande.uk0.bigv.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kudZI-0002Dm-M4 for qemu-devel@nongnu.org; Wed, 30 Dec 2020 10:39:29 -0500 Received: from host86-148-34-1.range86-148.btcentralplus.com ([86.148.34.1] helo=kentang.home) by mail.default.ilande.uk0.bigv.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kudZ9-00070L-80; Wed, 30 Dec 2020 15:39:14 +0000 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, pbonzini@redhat.com, fam@euphon.net, laurent@vivier.eu Date: Wed, 30 Dec 2020 15:37:37 +0000 Message-Id: <20201230153745.30241-18-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201230153745.30241-1-mark.cave-ayland@ilande.co.uk> References: <20201230153745.30241-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 86.148.34.1 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 17/25] esp: move PDMA length adjustments into esp_pdma_read()/esp_pdma_write() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.uk0.bigv.io) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.uk0.bigv.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Here the updates to async_len and ti_size are moved into the corresponding esp_pdma_read()/esp_pdma_write() function to eliminate the reference to pdma_cur in do_dma_pdma_cb(). Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index ca1472962d..23ec93c8ed 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -153,12 +153,18 @@ static uint8_t esp_pdma_read(ESPState *s) s->pdma_cur++; break; case ASYNC: - val =3D s->async_buf[s->pdma_cur++]; + val =3D s->async_buf[0]; + if (s->async_len > 0) { + s->async_len--; + s->async_buf++; + } + s->pdma_cur++; break; default: g_assert_not_reached(); } =20 + s->ti_size--; s->pdma_len--; dmalen--; esp_set_tc(s, dmalen); @@ -183,12 +189,18 @@ static void esp_pdma_write(ESPState *s, uint8_t val) s->pdma_cur++; break; case ASYNC: - s->async_buf[s->pdma_cur++] =3D val; + s->async_buf[0] =3D val; + if (s->async_len > 0) { + s->async_len--; + s->async_buf++; + } + s->pdma_cur++; break; default: g_assert_not_reached(); } =20 + s->ti_size++; s->pdma_len--; dmalen--; esp_set_tc(s, dmalen); @@ -427,7 +439,6 @@ static void esp_dma_done(ESPState *s) static void do_dma_pdma_cb(ESPState *s) { int to_device =3D ((s->rregs[ESP_RSTAT] & 7) =3D=3D STAT_DO); - int len =3D s->pdma_cur; =20 if (s->do_cmd) { s->ti_size =3D 0; @@ -436,13 +447,6 @@ static void do_dma_pdma_cb(ESPState *s) do_cmd(s, s->cmdbuf); return; } - s->async_buf +=3D len; - s->async_len -=3D len; - if (to_device) { - s->ti_size +=3D len; - } else { - s->ti_size -=3D len; - } if (s->async_len =3D=3D 0) { scsi_req_continue(s->current_req); /* --=20 2.20.1