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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 86251C49EA3 for ; Tue, 15 Jun 2021 15:50:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 58EDB614A7 for ; Tue, 15 Jun 2021 15:50:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 58EDB614A7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 861426E426; Tue, 15 Jun 2021 15:50:54 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id E21726E424; Tue, 15 Jun 2021 15:50:52 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id DDF8C61928; Tue, 15 Jun 2021 15:50:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623772252; bh=2l+0AzhN1G7V/d61jrCVzbn9/bKseKtLGum0/a0ArHQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iFsrjeHQtMVB3JpblFadNwbMYMTAeFuA9B33jI5t6w12Qzmkt7DurO3M/CBVXPlIh S5n11LXX0hsf29eu/CsZ6DxTP9QjW31WGC01SO3Ls5EvUu4ydVrfxpmz6cQ/g8PAGT dFUUYN/X5iN6kgpZPHPV/FgL6y4r7fwbN14gbSvgWKI/pSlCCf8SCNFoOZ+BxPKw8K DlCiYmz3qhxsbMPrbhMf9GbdOidJ4nUuR4/NYtXOFWcvLK/4hmDhoU12F+AslLyTp9 q6jUvEJjLbyio7NYBcw9rqkcdVqBpYhmUHm/jK8BPje5rZYRTKc6kBJXRqnLjMVup+ AiyIRaQUhrEAQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 3/3] radeon: use memcpy_to/fromio for UVD fw upload Date: Tue, 15 Jun 2021 11:50:47 -0400 Message-Id: <20210615155048.63448-3-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210615155048.63448-1-sashal@kernel.org> References: <20210615155048.63448-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Chen Li , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Chen Li [ Upstream commit ab8363d3875a83f4901eb1cc00ce8afd24de6c85 ] I met a gpu addr bug recently and the kernel log tells me the pc is memcpy/memset and link register is radeon_uvd_resume. As we know, in some architectures, optimized memcpy/memset may not work well on device memory. Trival memcpy_toio/memset_io can fix this problem. BTW, amdgpu has already done it in: commit ba0b2275a678 ("drm/amdgpu: use memcpy_to/fromio for UVD fw upload"), that's why it has no this issue on the same gpu and platform. Signed-off-by: Chen Li Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/radeon/radeon_uvd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index b35ebabd6a9f..eab985fdcfbd 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -242,7 +242,7 @@ int radeon_uvd_resume(struct radeon_device *rdev) if (rdev->uvd.vcpu_bo == NULL) return -EINVAL; - memcpy(rdev->uvd.cpu_addr, rdev->uvd_fw->data, rdev->uvd_fw->size); + memcpy_toio((void __iomem *)rdev->uvd.cpu_addr, rdev->uvd_fw->data, rdev->uvd_fw->size); size = radeon_bo_size(rdev->uvd.vcpu_bo); size -= rdev->uvd_fw->size; @@ -250,7 +250,7 @@ int radeon_uvd_resume(struct radeon_device *rdev) ptr = rdev->uvd.cpu_addr; ptr += rdev->uvd_fw->size; - memset(ptr, 0, size); + memset_io((void __iomem *)ptr, 0, size); return 0; } -- 2.30.2