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| author | Christian König <christian.koenig@amd.com> | 2019-09-13 13:43:15 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-17 08:06:54 -0500 |
| commit | de7b45babd9be25138ff5e4a0c34eefffbb226ff (patch) | |
| tree | b7e2ee564ad380a68043ac478c204789bc623e6a /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | db338e16638465cb8053bcb8d9c9778788545463 (diff) | |
| download | linux-de7b45babd9be25138ff5e4a0c34eefffbb226ff.tar.bz2 | |
drm/amdgpu: cleanup creating BOs at fixed location (v2)
The placement is something TTM/BO internal and the RAS code should
avoid touching that directly.
Add a helper to create a BO at a fixed location and use that instead.
v2: squash in fixes (Alex)
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 162e3849ff88..12d2adcdf14e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -343,6 +343,67 @@ int amdgpu_bo_create_kernel(struct amdgpu_device *adev, } /** + * amdgpu_bo_create_kernel_at - create BO for kernel use at specific location + * + * @adev: amdgpu device object + * @offset: offset of the BO + * @size: size of the BO + * @domain: where to place it + * @bo_ptr: used to initialize BOs in structures + * @cpu_addr: optional CPU address mapping + * + * Creates a kernel BO at a specific offset in the address space of the domain. + * + * Returns: + * 0 on success, negative error code otherwise. + */ +int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev, + uint64_t offset, uint64_t size, uint32_t domain, + struct amdgpu_bo **bo_ptr, void **cpu_addr) +{ + struct ttm_operation_ctx ctx = { false, false }; + unsigned int i; + int r; + + offset &= PAGE_MASK; + size = ALIGN(size, PAGE_SIZE); + + r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE, domain, bo_ptr, + NULL, NULL); + if (r) + return r; + + /* + * Remove the original mem node and create a new one at the request + * position. + */ + for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) { + (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT; + (*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT; + } + + ttm_bo_mem_put(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem); + r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement, + &(*bo_ptr)->tbo.mem, &ctx); + if (r) + goto error; + + if (cpu_addr) { + r = amdgpu_bo_kmap(*bo_ptr, cpu_addr); + if (r) + goto error; + } + + amdgpu_bo_unreserve(*bo_ptr); + return 0; + +error: + amdgpu_bo_unreserve(*bo_ptr); + amdgpu_bo_unref(bo_ptr); + return r; +} + +/** * amdgpu_bo_free_kernel - free BO for kernel use * * @bo: amdgpu BO to free |