From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74659C433E2 for ; Thu, 3 Sep 2020 17:31:28 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 3A65F206C0 for ; Thu, 3 Sep 2020 17:31:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dlseXbUP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3A65F206C0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amsat.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kDt55-0005YW-44 for qemu-devel@archiver.kernel.org; Thu, 03 Sep 2020 13:31:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55558) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kDt22-0000yk-9W; Thu, 03 Sep 2020 13:28:18 -0400 Received: from mail-wm1-x343.google.com ([2a00:1450:4864:20::343]:53982) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kDt20-0002WP-Nk; Thu, 03 Sep 2020 13:28:17 -0400 Received: by mail-wm1-x343.google.com with SMTP id u18so3672371wmc.3; Thu, 03 Sep 2020 10:28:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=h5iaQi3vWrr7M+kdi5/Gojkf+HOxBwaJDmXr+jv44dA=; b=dlseXbUPPWe78yt35GsXIDaRQ7iWXdV+Kjuns6hAGs8G9CuivxFz4Ohu+9joPCTdtJ dWRuPopDm5Su8N2femkKXQV0ghgfzUg4V5KlAB+1XFJNolm/N/jPhTLV0Ay1LpEOypW8 UClq4JZ+3sGbt0CuBJmrFIbSMTug0UUDw7pQL4r7flk1i6qu3b9ZTTX+fllC35+FwHLF DaGD5dMzrHMNm0UPnngtMENYnIlpajxhX7Bh/c8t5mNgJRz4WCfpmUeKYVri9sj2/KRm ZwP45wszHKmeLBAEiqzcCsHwMmAX9ikzy/irKvSiJAQoq3NSqRLqSIrvJpRjp+a88l9T 5JSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=h5iaQi3vWrr7M+kdi5/Gojkf+HOxBwaJDmXr+jv44dA=; b=Ld9Mwn2b2JHrXam0O9PT2ip6y53h6R+1kpewNjKeSfft2ezy+o6qVMxgyBvAb3recL GIGblEn3M66uYHt7tiUC+Jz+EEZUkpkkFSmB66vUsmcr28iXlCGDYEvNYNgggZxI878j T4vP26ctUgDmHuWnp85196SVXRpCR7WBskBFY/OX0w46hcHb8kJ9bWMXkgtt8+swfEch WXNUGwa7SCT0wtLcldR5uecuM8WoJaIFvlDvnmUqIzb6jgPq/Cv3s99oVdK+2m9IeD6v g8AMpeR3aB5jw20im5z04+0LquYWuITEjyrOalhJ5sjSpiJXKGFp/vFZ4/ytrgW3f4Ti sfSg== X-Gm-Message-State: AOAM530F3dSnylxn+f8eBeXf/YjqZDPNxQrfWIVWu/nVWlpChTnaDJ58 QswKjXMcrbx5RaJxFmMqhldYS4yVuvY= X-Google-Smtp-Source: ABdhPJyhemRyOsLI9pWpEZQSs6hRzeM4cZOzNRA/oSJWtDsoJLui1dskwVNPAsICJPfo9SeDKsKgWg== X-Received: by 2002:a7b:c387:: with SMTP id s7mr3520582wmj.171.1599154094081; Thu, 03 Sep 2020 10:28:14 -0700 (PDT) Received: from localhost.localdomain (50.red-83-52-54.dynamicip.rima-tde.net. [83.52.54.50]) by smtp.gmail.com with ESMTPSA id b2sm5325802wmh.47.2020.09.03.10.28.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2020 10:28:13 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 4/4] hw/sd/sdhci: Yield if interrupt delivered during multiple transfer Date: Thu, 3 Sep 2020 19:28:06 +0200 Message-Id: <20200903172806.489710-5-f4bug@amsat.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200903172806.489710-1-f4bug@amsat.org> References: <20200903172806.489710-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::343; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x343.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: , Cc: Prasad J Pandit , qemu-block@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Alexander Bulekov , qemu-arm@nongnu.org, Ruhr-University Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The Descriptor Table has a bit to allow the DMA to generates Interrupt when the operation of the descriptor line is completed (see "1.13.4. Descriptor Table" of 'SD Host Controller Simplified Specification Version 2.00'). If we have pending interrupt and the descriptor requires it to be generated as soon as it is completed, reschedule pending transfers and yield to the CPU. Signed-off-by: Philippe Mathieu-Daudé --- hw/sd/sdhci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index 06cb098036c..74b0bf77103 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -834,7 +834,10 @@ static void sdhci_do_adma(SDHCIState *s) s->norintsts |= SDHC_NIS_DMA; } - sdhci_update_irq(s); + if (sdhci_update_irq(s) && !(dscr.attr & SDHC_ADMA_ATTR_END)) { + /* IRQ delivered, reschedule current transfer */ + break; + } } /* ADMA transfer terminates if blkcnt == 0 or by END attribute */ -- 2.26.2