From 087451f372bf76d971184caa258807b7c35aac8f Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Tue, 19 Oct 2021 17:26:37 -0400 Subject: drm/amdgpu: use generic fb helpers instead of setting up AMD own's. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With the shadow buffer support from generic framebuffer emulation, it's possible now to have runpm kicked when no update for console. Signed-off-by: Evan Quan Acked-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index a1e63ba4c54a..e27ce001c3b3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -877,6 +877,32 @@ out: return r; } +static int amdgpu_gem_align_pitch(struct amdgpu_device *adev, + int width, + int cpp, + bool tiled) +{ + int aligned = width; + int pitch_mask = 0; + + switch (cpp) { + case 1: + pitch_mask = 255; + break; + case 2: + pitch_mask = 127; + break; + case 3: + case 4: + pitch_mask = 63; + break; + } + + aligned += pitch_mask; + aligned &= ~pitch_mask; + return aligned * cpp; +} + int amdgpu_mode_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args) @@ -897,8 +923,8 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv, if (adev->mman.buffer_funcs_enabled) flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; - args->pitch = amdgpu_align_pitch(adev, args->width, - DIV_ROUND_UP(args->bpp, 8), 0); + args->pitch = amdgpu_gem_align_pitch(adev, args->width, + DIV_ROUND_UP(args->bpp, 8), 0); args->size = (u64)args->pitch * args->height; args->size = ALIGN(args->size, PAGE_SIZE); domain = amdgpu_bo_get_preferred_domain(adev, -- cgit v1.2.3 From 1223c15c780bc967e150204ec11992f39fdc85d5 Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Fri, 12 Nov 2021 15:51:25 +0800 Subject: drm/amdgpu: update the domain flags for dumb buffer creation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit After switching to generic framebuffer framework, we rely on the ->dumb_create routine for frame buffer creation. However, the different domain flags used are not optimal. Add the contiguous flag to directly allocate the scanout BO as one linear buffer. Fixes: 087451f372bf76 ("drm/amdgpu: use generic fb helpers instead of setting up AMD own's.") Signed-off-by: Evan Quan Reviewed-by: Christian König Reviewed-by: Guchun Chen Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index e27ce001c3b3..c0d8f40a5b45 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -911,7 +911,8 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv, struct drm_gem_object *gobj; uint32_t handle; u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | - AMDGPU_GEM_CREATE_CPU_GTT_USWC; + AMDGPU_GEM_CREATE_CPU_GTT_USWC | + AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS; u32 domain; int r; -- cgit v1.2.3 From fbcdbfde87509d523132b59f661a355c731139d0 Mon Sep 17 00:00:00 2001 From: Rajneesh Bhardwaj Date: Fri, 26 Nov 2021 15:15:04 -0500 Subject: drm/amdgpu: Don't inherit GEM object VMAs in child process MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When an application having open file access to a node forks, its shared mappings also get reflected in the address space of child process even though it cannot access them with the object permissions applied. With the existing permission checks on the gem objects, it might be reasonable to also create the VMAs with VM_DONTCOPY flag so a user space application doesn't need to explicitly call the madvise(addr, len, MADV_DONTFORK) system call to prevent the pages in the mapped range to appear in the address space of the child process. It also prevents the memory leaks due to additional reference counts on the mapped BOs in the child process that prevented freeing the memory in the parent for which we had worked around earlier in the user space inside the thunk library. Additionally, we faced this issue when using CRIU to checkpoint restore an application that had such inherited mappings in the child which confuse CRIU when it mmaps on restore. Having this flag set for the render node VMAs helps. VMAs mapped via KFD already take care of this so this is needed only for the render nodes. To limit the impact of the change to user space consumers such as OpenGL etc, limit it to KFD BOs only. Acked-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: David Yat Sin Signed-off-by: Rajneesh Bhardwaj Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index c0d8f40a5b45..9a6507af1670 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -264,6 +264,9 @@ static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_str !(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) vma->vm_flags &= ~VM_MAYWRITE; + if (bo->kfd_bo) + vma->vm_flags |= VM_DONTCOPY; + return drm_gem_ttm_mmap(obj, vma); } -- cgit v1.2.3 From 8b5da5a458c95ad49571a6a6285800bf13409616 Mon Sep 17 00:00:00 2001 From: Rajneesh Bhardwaj Date: Mon, 10 Jan 2022 12:14:10 -0500 Subject: Revert "drm/amdgpu: Don't inherit GEM object VMAs in child process" This reverts commit fbcdbfde87509d523132b59f661a355c731139d0. Reviewed-by: Felix Kuehling Signed-off-by: Rajneesh Bhardwaj Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 9a6507af1670..c0d8f40a5b45 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -264,9 +264,6 @@ static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_str !(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) vma->vm_flags &= ~VM_MAYWRITE; - if (bo->kfd_bo) - vma->vm_flags |= VM_DONTCOPY; - return drm_gem_ttm_mmap(obj, vma); } -- cgit v1.2.3