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author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-02-06 20:32:38 -0500 |
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committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-02-06 20:32:38 -0500 |
commit | a46a2cd103a863724d668c86dca86bd0d93a19e4 (patch) | |
tree | 07286914cb6b5ed9ce10c290d4ed1fa892864ec0 /drivers/gpu/drm/amd/include/kgd_kfd_interface.h | |
parent | 3c728d3aa1fd5c7c2461835a93ac8fad57813db6 (diff) | |
download | lwn-a46a2cd103a863724d668c86dca86bd0d93a19e4.tar.gz lwn-a46a2cd103a863724d668c86dca86bd0d93a19e4.zip |
drm/amdgpu: Add GPUVM memory management functions for KFD
v2:
* Removed unused flags from struct kgd_mem
* Updated some comments
* Added a check to unmap_memory_from_gpu whether BO was mapped
v3: add mutex_destroy in relevant places
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/include/kgd_kfd_interface.h')
-rw-r--r-- | drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h index 36c706aff2ac..5984fec78be4 100644 --- a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h @@ -127,6 +127,25 @@ struct tile_config { uint32_t num_ranks; }; + +/* + * Allocation flag domains + */ +#define ALLOC_MEM_FLAGS_VRAM (1 << 0) +#define ALLOC_MEM_FLAGS_GTT (1 << 1) +#define ALLOC_MEM_FLAGS_USERPTR (1 << 2) /* TODO */ +#define ALLOC_MEM_FLAGS_DOORBELL (1 << 3) /* TODO */ + +/* + * Allocation flags attributes/access options. + */ +#define ALLOC_MEM_FLAGS_WRITABLE (1 << 31) +#define ALLOC_MEM_FLAGS_EXECUTABLE (1 << 30) +#define ALLOC_MEM_FLAGS_PUBLIC (1 << 29) +#define ALLOC_MEM_FLAGS_NO_SUBSTITUTE (1 << 28) /* TODO */ +#define ALLOC_MEM_FLAGS_AQL_QUEUE_MEM (1 << 27) +#define ALLOC_MEM_FLAGS_COHERENT (1 << 26) /* For GFXv9 or later */ + /** * struct kfd2kgd_calls * @@ -186,6 +205,41 @@ struct tile_config { * * @get_vram_usage: Returns current VRAM usage * + * @create_process_vm: Create a VM address space for a given process and GPU + * + * @destroy_process_vm: Destroy a VM + * + * @get_process_page_dir: Get physical address of a VM page directory + * + * @set_vm_context_page_table_base: Program page table base for a VMID + * + * @alloc_memory_of_gpu: Allocate GPUVM memory + * + * @free_memory_of_gpu: Free GPUVM memory + * + * @map_memory_to_gpu: Map GPUVM memory into a specific VM address + * space. Allocates and updates page tables and page directories as + * needed. This function may return before all page table updates have + * completed. This allows multiple map operations (on multiple GPUs) + * to happen concurrently. Use sync_memory to synchronize with all + * pending updates. + * + * @unmap_memor_to_gpu: Unmap GPUVM memory from a specific VM address space + * + * @sync_memory: Wait for pending page table updates to complete + * + * @map_gtt_bo_to_kernel: Map a GTT BO for kernel access + * Pins the BO, maps it to kernel address space. Such BOs are never evicted. + * The kernel virtual address remains valid until the BO is freed. + * + * @restore_process_bos: Restore all BOs that belong to the + * process. This is intended for restoring memory mappings after a TTM + * eviction. + * + * @invalidate_tlbs: Invalidate TLBs for a specific PASID + * + * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID + * * This structure contains function pointers to services that the kgd driver * provides to amdkfd driver. * @@ -275,6 +329,29 @@ struct kfd2kgd_calls { void (*get_cu_info)(struct kgd_dev *kgd, struct kfd_cu_info *cu_info); uint64_t (*get_vram_usage)(struct kgd_dev *kgd); + + int (*create_process_vm)(struct kgd_dev *kgd, void **vm, + void **process_info, struct dma_fence **ef); + void (*destroy_process_vm)(struct kgd_dev *kgd, void *vm); + uint32_t (*get_process_page_dir)(void *vm); + void (*set_vm_context_page_table_base)(struct kgd_dev *kgd, + uint32_t vmid, uint32_t page_table_base); + int (*alloc_memory_of_gpu)(struct kgd_dev *kgd, uint64_t va, + uint64_t size, void *vm, + struct kgd_mem **mem, uint64_t *offset, + uint32_t flags); + int (*free_memory_of_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem); + int (*map_memory_to_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem, + void *vm); + int (*unmap_memory_to_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem, + void *vm); + int (*sync_memory)(struct kgd_dev *kgd, struct kgd_mem *mem, bool intr); + int (*map_gtt_bo_to_kernel)(struct kgd_dev *kgd, struct kgd_mem *mem, + void **kptr, uint64_t *size); + int (*restore_process_bos)(void *process_info, struct dma_fence **ef); + + int (*invalidate_tlbs)(struct kgd_dev *kgd, uint16_t pasid); + int (*invalidate_tlbs_vmid)(struct kgd_dev *kgd, uint16_t vmid); }; /** |