Commit a3ac30ff authored by Srinivasan Shanmugam's avatar Srinivasan Shanmugam Committed by Alex Deucher
Browse files

drm/amdgpu/ttm: Initialize AMDGPU_PL_MMIO_REMAP Heap 



Add a one-page TTM range manager for AMDGPU_PL_MMIO_REMAP via
amdgpu_ttm_init_on_chip(). This only registers the placement with TTM;
no BO is allocated in this patch.

The singleton 4K remap BO is created and freed in the following patch.

This split follows to separate heap bring-up from BO allocation.

Cc: Christian König <christian.koenig@amd.com>
Suggested-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarSrinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent fb5a52db

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

+9 −0
Original line number Diff line number Diff line
@@ -2021,6 +2021,13 @@ int amdgpu_ttm_init(struct amdgpu_device *adev) 
		return r;

	}



	/* Initialize MMIO-remap pool (single page 4K) */

	r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_MMIO_REMAP, 1);

	if (r) {

		dev_err(adev->dev, "Failed initializing MMIO-remap heap.\n");

		return r;

	}



	/* Initialize preemptible memory pool */

	r = amdgpu_preempt_mgr_init(adev);

	if (r) {
@@ -2083,6 +2090,7 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev) 
	}

	amdgpu_bo_free_kernel(&adev->mman.sdma_access_bo, NULL,

					&adev->mman.sdma_access_ptr);



	amdgpu_ttm_fw_reserve_vram_fini(adev);

	amdgpu_ttm_drv_reserve_vram_fini(adev);
@@ -2104,6 +2112,7 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev) 
	ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_GWS);

	ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_OA);

	ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_DOORBELL);

	ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_MMIO_REMAP);

	ttm_device_fini(&adev->mman.bdev);

	adev->mman.initialized = false;

	dev_info(adev->dev, "amdgpu: ttm finalized\n");