From patchwork Tue Feb 13 19:39:51 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: 13555587 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CE2ACC48BC4 for ; Tue, 13 Feb 2024 19:46:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rZyg6-0006vv-0l; Tue, 13 Feb 2024 14:42:50 -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 1rZyg1-0006GV-PB for qemu-devel@nongnu.org; Tue, 13 Feb 2024 14:42:46 -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 1rZyg0-0006PJ-91 for qemu-devel@nongnu.org; Tue, 13 Feb 2024 14:42:45 -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=rztxPF2KL8bBXmJOqN6I30ocrg/o4uM0EjWkKsf+Its=; b=iYTOdRchRnUgbERToQ1Z50ELyv jDEoEATzGWGCD2t2BKun9iVWI3uIj/5Ok9YLNlAiALbcYp5D5Lxj2/zTGJljyPUpKbRGn1ZJ1IB2p KYwVqpl38eH7op9qX9L6Xf1wwZNgzetNUtkAAOsWEYh9M/ECLBthHO0/PhH0woVr+FRNXuN5Ga+HX 60G1jiLUD+x/I21M/SEgygPh77woRlTuvsFaEV/OiH/gkCASpVhGWZPnF/hbbSBPq1ioBMjfl9Ke4 NGGde7NG52/OqBd7Yk+FVtnarMBpMqywfn4pADcCHYH3o7LgDqMKhiVAZ9ovsWezWIl6KgjaagERL 6Pmyfgt6gE5xAfI0m+wViy9tl3tt+eEzgSO+dhkYsslrl2hHeUBdDP1Ixya2gYYI2TQL1/22KdiwR pl6LLqMTrIvhFm7eN6OyILuN5EfZisrq3Zkmu7Bin5XNZAiOzdDnN8L9WOxzdKpDOMGUivEY3Ypaf ZH9FpQygZHS8E4ZB1dqEpsZqkVOxDp6X2NWOEWKTN8SetKc4fltxf+SwiIvZtpoMYK9YN7dE+mZSM d9FPDJKNtv0bgzAESD3wh6SlnudFWyz1FJxvqlr5hs9UZFNUtneHkLKe5z9F1DnifqtVbfygYbM0p lYZKBV0bdwRIPujRFslTyWacH70xrG43Vo5t3luME=; Received: from [2a00:23c4:8bb2:1300:c500:f104:bc51:e670] (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 1rZyf9-0008m4-M3; Tue, 13 Feb 2024 19:41:53 +0000 From: Mark Cave-Ayland To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Tue, 13 Feb 2024 19:39:51 +0000 Message-Id: <20240213194052.1162753-28-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240213194052.1162753-1-mark.cave-ayland@ilande.co.uk> References: <20240213194052.1162753-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a00:23c4:8bb2:1300:c500:f104:bc51:e670 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PULL 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.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 Tested-by: Helge Deller Tested-by: Thomas Huth Message-Id: <20240112125420.514425-28-mark.cave-ayland@ilande.co.uk> 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); }