On 10/20/2021 8:52 AM, Christian König wrote:
Am 19.10.21 um 20:14 schrieb Nirmoy Das: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. Signed-off-by: Nirmoy Das <nirmoy....@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 --- drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 42 ++++++++++++---------- drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 9 ++--- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 10 +++--- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 10 +++--- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 9 ++--- 6 files changed, 45 insertions(+), 39 deletions(-)diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.cindex 5807df52031c..f69e613805db 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c@@ -3941,10 +3941,6 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)amdgpu_fence_driver_hw_fini(adev); amdgpu_device_ip_suspend_phase2(adev); - /* This second call to evict device resources is to evict - * the gart page table using the CPU. - */ - amdgpu_device_evict_resources(adev); return 0; }diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.cindex d3e4203f6217..97a9f61fa106 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c@@ -107,33 +107,37 @@ void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev)* * @adev: amdgpu_device pointer * - * Allocate video memory for GART page table + * Allocate and pin video memory for GART page table * (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_alloc(struct amdgpu_device *adev) { + struct amdgpu_bo_param bp; 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; - } - } + if (adev->gart.bo != NULL) + return 0; + + 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; + + r = amdgpu_gart_table_vram_pin(adev); + if (r) + return r; +Instead of all this you should be able to use amdgpu_bo_create_kernel().
OK, with that we can remove amdgpu_gart_table_vram_pin() completely.
return 0; }diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.cindex 3ec5ff5a6dbe..75d584e1b0e9 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c@@ -992,9 +992,11 @@ static int gmc_v10_0_gart_enable(struct amdgpu_device *adev)return -EINVAL; } - r = amdgpu_gart_table_vram_pin(adev); - if (r) - return r; + if (adev->in_suspend) { + r = amdgpu_gtt_mgr_recover(adev); + if (r) + return r; + }Please drop the in_suspend check here.If I'm not completely mistaken the GTT domain should already be initialized here and if it's not then we can easily check for that in amdgpu_gtt_mgr_recover.
Yes it is. I will remove that. Thanks, Nirmoy
Christian.r = adev->gfxhub.funcs->gart_enable(adev); if (r)@@ -1062,7 +1064,6 @@ static void gmc_v10_0_gart_disable(struct amdgpu_device *adev){ adev->gfxhub.funcs->gart_disable(adev); adev->mmhub.funcs->gart_disable(adev); - amdgpu_gart_table_vram_unpin(adev); } static int gmc_v10_0_hw_fini(void *handle)diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.cindex 0a50fdaced7e..02e90d9443c1 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c@@ -620,9 +620,12 @@ static int gmc_v7_0_gart_enable(struct amdgpu_device *adev)dev_err(adev->dev, "No VRAM object for PCIE GART.\n"); return -EINVAL; } - r = amdgpu_gart_table_vram_pin(adev); - if (r) - return r; + + if (adev->in_suspend) { + r = amdgpu_gtt_mgr_recover(adev); + if (r) + return r; + } table_addr = amdgpu_bo_gpu_offset(adev->gart.bo);@@ -758,7 +761,6 @@ static void gmc_v7_0_gart_disable(struct amdgpu_device *adev)tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 0); WREG32(mmVM_L2_CNTL, tmp); WREG32(mmVM_L2_CNTL2, 0); - amdgpu_gart_table_vram_unpin(adev); } /**diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.cindex 492ebed2915b..dc2577e37688 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c@@ -837,9 +837,12 @@ static int gmc_v8_0_gart_enable(struct amdgpu_device *adev)dev_err(adev->dev, "No VRAM object for PCIE GART.\n"); return -EINVAL; } - r = amdgpu_gart_table_vram_pin(adev); - if (r) - return r; + + if (adev->in_suspend) { + r = amdgpu_gtt_mgr_recover(adev); + if (r) + return r; + } table_addr = amdgpu_bo_gpu_offset(adev->gart.bo);@@ -992,7 +995,6 @@ static void gmc_v8_0_gart_disable(struct amdgpu_device *adev)tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 0); WREG32(mmVM_L2_CNTL, tmp); WREG32(mmVM_L2_CNTL2, 0); - amdgpu_gart_table_vram_unpin(adev); } /**diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.cindex cb82404df534..732d91dbf449 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c@@ -1714,9 +1714,11 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev)return -EINVAL; } - r = amdgpu_gart_table_vram_pin(adev); - if (r) - return r; + if (adev->in_suspend) { + r = amdgpu_gtt_mgr_recover(adev); + if (r) + return r; + } r = adev->gfxhub.funcs->gart_enable(adev); if (r)@@ -1793,7 +1795,6 @@ static void gmc_v9_0_gart_disable(struct amdgpu_device *adev){ adev->gfxhub.funcs->gart_disable(adev); adev->mmhub.funcs->gart_disable(adev); - amdgpu_gart_table_vram_unpin(adev); } static int gmc_v9_0_hw_fini(void *handle) -- 2.32.0
