From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D75F365717; Mon, 5 May 2025 22:46:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485168; cv=none; b=Ieb9vKJrjOfrIv07Y+Cpp2z2ePDE4fL/l6dGDKKgpxmBFnfbCywAiub0XLB2TzCFT3dXB7Lqex+uoZBcX2MYcTSuKmi69DSaQkK7NS6XOE6LwK8aG8MAfG1wqB4sB/ALwN5sLs5esudeXpg4MRw7gxTxrd+d2MjUYBf+oSO07zI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485168; c=relaxed/simple; bh=qM4WJnGHM1m1fsGvJCRhq94cX/P+bapNYT6XAdoDPVs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mi7WHDK69iM2aOPZvcXA2O8xb7u5prw+qfxT8b3jLFFoO4fnT1ylWhQv4mjurzgRU9unLwt9Qo+Q49BHwgd4MkPzR47t0hsrMTuu9dZpOCaL+Ok2oCi7oXkLQq0txFb2LPxUTR6MBgHa3Hb6uU7HqOlMv3XWBGJFsADXl2J81AY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AxM5ChGv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AxM5ChGv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A567EC4CEE4; Mon, 5 May 2025 22:46:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746485166; bh=qM4WJnGHM1m1fsGvJCRhq94cX/P+bapNYT6XAdoDPVs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AxM5ChGvRH3pgLaGJcESJIGNuaz4oDXK6phtpI2fkhJy0UEb2m4VWBZGGRdzsR2co 0VaZMRgoNPgGc3LKoMrnzjKR/h0B94qEfqPMu3867GM1GGMvxXMKUMML+Z+XBWNS5x h4+ABjXfdJOCbNxfNw0TINq7J/15wZN0P4+EmrOxACeOj1eNEhuv1zhUe6+Qpc/tzx dJX+JaZ+DLcVCDMsf1vbyk28GIBcYQiFNZSIZkGYr00UxtVlHRFQrot96EKwbSihZ+ 2SWCUG4ar8TsOtyOpPNs96eZROk9Zblc7CtWhhWfWqJhLRYZ1Yen+WcNeCXpTFxoe7 u1QQaoJMnoFaQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Victor Lu , Alex Deucher , Sasha Levin , christian.koenig@amd.com, airlied@gmail.com, simona@ffwll.ch, Hawking.Zhang@amd.com, tao.zhou1@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.12 196/486] drm/amdgpu: Do not program AGP BAR regs under SRIOV in gfxhub_v1_0.c Date: Mon, 5 May 2025 18:34:32 -0400 Message-Id: <20250505223922.2682012-196-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505223922.2682012-1-sashal@kernel.org> References: <20250505223922.2682012-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 Content-Transfer-Encoding: 8bit From: Victor Lu [ Upstream commit 057fef20b8401110a7bc1c2fe9d804a8a0bf0d24 ] SRIOV VF does not have write access to AGP BAR regs. Skip the writes to avoid a dmesg warning. Signed-off-by: Victor Lu Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c index 0e3ddea7b8e0f..a7bfc9f41d0e3 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c @@ -92,12 +92,12 @@ static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev) { uint64_t value; - /* Program the AGP BAR */ - WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BASE, 0); - WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BOT, adev->gmc.agp_start >> 24); - WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_TOP, adev->gmc.agp_end >> 24); - if (!amdgpu_sriov_vf(adev) || adev->asic_type <= CHIP_VEGA10) { + /* Program the AGP BAR */ + WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BASE, 0); + WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_BOT, adev->gmc.agp_start >> 24); + WREG32_SOC15_RLC(GC, 0, mmMC_VM_AGP_TOP, adev->gmc.agp_end >> 24); + /* Program the system aperture low logical page number. */ WREG32_SOC15_RLC(GC, 0, mmMC_VM_SYSTEM_APERTURE_LOW_ADDR, min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18); -- 2.39.5