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authorFelix Kuehling <Felix.Kuehling@amd.com>2018-02-06 20:32:38 -0500
committerOded Gabbay <oded.gabbay@gmail.com>2018-02-06 20:32:38 -0500
commita46a2cd103a863724d668c86dca86bd0d93a19e4 (patch)
tree07286914cb6b5ed9ce10c290d4ed1fa892864ec0 /drivers/gpu/drm/amd/include
parent3c728d3aa1fd5c7c2461835a93ac8fad57813db6 (diff)
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')
-rw-r--r--drivers/gpu/drm/amd/include/kgd_kfd_interface.h77
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);
};
/**