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Tue, 1 Sep 2026 15:10:55 -0500 From: Alex Deucher To: , CC: Alex Deucher Subject: [PATCH 15/31] drm/amdgpu/sdma7: add tlb invalidation buffer func callback Date: Tue, 1 Sep 2026 16:10:18 -0400 Message-ID: <20260901201034.2960437-16-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: BL6PEPF00022572:EE_|SA1PR12MB6946:EE_ X-MS-Office365-Filtering-Correlation-Id: d11705a1-a8ea-487e-57ee-08df08652678 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700016|376014|1800799024|23010399003|82310400026|6133799003|10067099003|56012099006|11063799006|18002099003|22082099003; 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: BL6PEPF00022572.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB6946 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" Will be used for TLB invalidation. Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c | 48 ++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c index d5552f206e4dc..dab2d08d8766b 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c @@ -1796,6 +1796,52 @@ static void sdma_v7_0_emit_fill_buffer(struct amdgpu_ib *ib, ib->ptr[ib->length_dw++] = byte_count - 1; } +/** + * sdma_v7_0_emit_tlb_inv - Invalidate TLB using the sDMA engine + * + * @adev: amdgpu device structure + * @ib: indirect buffer to fill + * @vmid: vmid to target + * @vmhub: vmhub to target + * @eng: invalidation engine to use + * @flush_type: type of flush (lightweight, heavyweight) + * @xcc_inst: XCC to target + * + * Invalidate TLB using the DMA engine. + */ +static void sdma_v7_0_emit_tlb_inv(struct amdgpu_device *adev, + struct amdgpu_ib *ib, + unsigned int vmid, + u32 vmhub, + u32 eng, + u32 flush_type, + u32 xcc_inst) +{ + struct amdgpu_vmhub *hub = &adev->vmhub[vmhub]; + u32 inv_req = hub->vmhub_funcs->get_invalidate_req(vmid, flush_type); + u32 mmhub_eng, gfxhub_eng; + + if (AMDGPU_IS_GFXHUB(vmhub)) { + mmhub_eng = 0x1f; + gfxhub_eng = eng; + } else { + mmhub_eng = eng; + gfxhub_eng = 0x1f; + } + + /* Trigger invalidation. */ + ib->ptr[ib->length_dw++] = + (SDMA_PKT_VM_INVALIDATION_HEADER_OP(SDMA_OP_POLL_REGMEM) | + SDMA_PKT_VM_INVALIDATION_HEADER_SUB_OP(SDMA_SUBOP_VM_INVALIDATION) | + SDMA_PKT_VM_INVALIDATION_HEADER_GFX_ENG_ID(gfxhub_eng) | + SDMA_PKT_VM_INVALIDATION_HEADER_MM_ENG_ID(mmhub_eng)); + ib->ptr[ib->length_dw++] = inv_req; + ib->ptr[ib->length_dw++] = 0xFFFFFFFF; + ib->ptr[ib->length_dw++] = + (SDMA_PKT_VM_INVALIDATION_ADDRESSRANGEHI_INVALIDATEACK(1 << vmid) | + SDMA_PKT_VM_INVALIDATION_ADDRESSRANGEHI_ADDRESSRANGEHI(0x1F)); +} + static const struct amdgpu_buffer_funcs sdma_v7_0_buffer_funcs = { .copy_max_bytes = 1 << 30, .copy_num_dw = 8, @@ -1803,6 +1849,8 @@ static const struct amdgpu_buffer_funcs sdma_v7_0_buffer_funcs = { .fill_max_bytes = 1 << 30, .fill_num_dw = 5, .emit_fill_buffer = sdma_v7_0_emit_fill_buffer, + .tlb_inv_num_dw = 4, + .emit_tlb_inv = sdma_v7_0_emit_tlb_inv, }; static void sdma_v7_0_set_buffer_funcs(struct amdgpu_device *adev) -- 2.55.0