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Tue, 1 Sep 2026 15:11:00 -0500 From: Alex Deucher To: , CC: Alex Deucher Subject: [PATCH 23/31] drm/amdgpu/gmc9: use SDMA for gart TLB invalidation Date: Tue, 1 Sep 2026 16:10:26 -0400 Message-ID: <20260901201034.2960437-24-alexander.deucher@amd.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260901201034.2960437-1-alexander.deucher@amd.com> References: <20260901201034.2960437-1-alexander.deucher@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF00022571:EE_|SJ2PR12MB8782:EE_ X-MS-Office365-Filtering-Correlation-Id: a8310d12-7d54-47df-d794-08df08652873 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|82310400026|36860700016|1800799024|23010399003|376014|18002099003|22082099003|56012099006|10067099003|11063799006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF00022571.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8782 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Use SDMA rather than MMIO on vega20 and older. The avoids the need to disallow gfxoff when invalidating. Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 317b44412b5a6..ad4bb86b8ffbf 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -2164,6 +2164,8 @@ static int gmc_v9_0_hw_init(struct amdgpu_ip_block *ip_block) adev->gmc.flush_pasid_uses_kiq = true; if (adev->gmc.flush_pasid_uses_kiq) adev->gmc.pasid_inv_method = AMDGPU_TLB_INV_METHOD_KIQ; + if (amdgpu_ip_version(adev, GC_HWIP, 0) <= IP_VERSION(9, 4, 0)) + adev->gmc.gart_inv_method = AMDGPU_TLB_INV_METHOD_SDMA; /* Vega20+XGMI caches PTEs in TC and TLB. Add a heavy-weight TLB flush * (type 2), which flushes both. Due to a race condition with -- 2.55.0