From 575e55ee4fbc2c641a29b0054b3473e9fa81ae76 Mon Sep 17 00:00:00 2001 From: Nirmoy Das Date: Fri, 7 Jan 2022 09:51:15 +0100 Subject: drm/amdgpu: recover gart table at resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Get rid off pin/unpin of gart BO at resume/suspend and instead pin only once and try to recover gart content at resume time. This is much more stable in case there is OOM situation at 2nd call to amdgpu_device_evict_resources() while evicting GART table. v3: remove gart recovery from other places v2: pin gart at amdgpu_gart_table_vram_alloc() Reviewed-by: Christian König Signed-off-by: Nirmoy Das Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 84 +++----------------------------- 1 file changed, 6 insertions(+), 78 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c index d3e4203f6217..645950a653a0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c @@ -114,80 +114,12 @@ void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev) */ int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev) { - int r; - - if (adev->gart.bo == NULL) { - struct amdgpu_bo_param bp; - - memset(&bp, 0, sizeof(bp)); - bp.size = adev->gart.table_size; - bp.byte_align = PAGE_SIZE; - bp.domain = AMDGPU_GEM_DOMAIN_VRAM; - bp.flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | - AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS; - bp.type = ttm_bo_type_kernel; - bp.resv = NULL; - bp.bo_ptr_size = sizeof(struct amdgpu_bo); - - r = amdgpu_bo_create(adev, &bp, &adev->gart.bo); - if (r) { - return r; - } - } - return 0; -} - -/** - * amdgpu_gart_table_vram_pin - pin gart page table in vram - * - * @adev: amdgpu_device pointer - * - * Pin the GART page table in vram so it will not be moved - * by the memory manager (pcie r4xx, r5xx+). These asics require the - * gart table to be in video memory. - * Returns 0 for success, error for failure. - */ -int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev) -{ - int r; - - r = amdgpu_bo_reserve(adev->gart.bo, false); - if (unlikely(r != 0)) - return r; - r = amdgpu_bo_pin(adev->gart.bo, AMDGPU_GEM_DOMAIN_VRAM); - if (r) { - amdgpu_bo_unreserve(adev->gart.bo); - return r; - } - r = amdgpu_bo_kmap(adev->gart.bo, &adev->gart.ptr); - if (r) - amdgpu_bo_unpin(adev->gart.bo); - amdgpu_bo_unreserve(adev->gart.bo); - return r; -} - -/** - * amdgpu_gart_table_vram_unpin - unpin gart page table in vram - * - * @adev: amdgpu_device pointer - * - * Unpin the GART page table in vram (pcie r4xx, r5xx+). - * These asics require the gart table to be in video memory. - */ -void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev) -{ - int r; + if (adev->gart.bo != NULL) + return 0; - if (adev->gart.bo == NULL) { - return; - } - r = amdgpu_bo_reserve(adev->gart.bo, true); - if (likely(r == 0)) { - amdgpu_bo_kunmap(adev->gart.bo); - amdgpu_bo_unpin(adev->gart.bo); - amdgpu_bo_unreserve(adev->gart.bo); - adev->gart.ptr = NULL; - } + return amdgpu_bo_create_kernel(adev, adev->gart.table_size, PAGE_SIZE, + AMDGPU_GEM_DOMAIN_VRAM, &adev->gart.bo, + NULL, (void *)&adev->gart.ptr); } /** @@ -201,11 +133,7 @@ void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev) */ void amdgpu_gart_table_vram_free(struct amdgpu_device *adev) { - if (adev->gart.bo == NULL) { - return; - } - amdgpu_bo_unref(&adev->gart.bo); - adev->gart.ptr = NULL; + amdgpu_bo_free_kernel(&adev->gart.bo, NULL, (void *)&adev->gart.ptr); } /* -- cgit v1.2.3-70-g09d2