diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h new file mode 100644 index 000000000000..adbc2f5e5c7f --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -0,0 +1,205 @@ +/* + * Copyright 2016 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Christian König + */ +#ifndef __AMDGPU_VM_H__ +#define __AMDGPU_VM_H__ + +#include <linux/rbtree.h> + +#include "gpu_scheduler.h" +#include "amdgpu_sync.h" +#include "amdgpu_ring.h" + +struct amdgpu_bo_va; +struct amdgpu_job; +struct amdgpu_bo_list_entry; + +/* + * GPUVM handling + */ + +/* maximum number of VMIDs */ +#define AMDGPU_NUM_VM 16 + +/* Maximum number of PTEs the hardware can write with one command */ +#define AMDGPU_VM_MAX_UPDATE_SIZE 0x3FFFF + +/* number of entries in page table */ +#define AMDGPU_VM_PTE_COUNT (1 << amdgpu_vm_block_size) + +/* PTBs (Page Table Blocks) need to be aligned to 32K */ +#define AMDGPU_VM_PTB_ALIGN_SIZE 32768 + +/* LOG2 number of continuous pages for the fragment field */ +#define AMDGPU_LOG2_PAGES_PER_FRAG 4 + +#define AMDGPU_PTE_VALID (1 << 0) +#define AMDGPU_PTE_SYSTEM (1 << 1) +#define AMDGPU_PTE_SNOOPED (1 << 2) + +/* VI only */ +#define AMDGPU_PTE_EXECUTABLE (1 << 4) + +#define AMDGPU_PTE_READABLE (1 << 5) +#define AMDGPU_PTE_WRITEABLE (1 << 6) + +#define AMDGPU_PTE_FRAG(x) ((x & 0x1f) << 7) + +/* How to programm VM fault handling */ +#define AMDGPU_VM_FAULT_STOP_NEVER 0 +#define AMDGPU_VM_FAULT_STOP_FIRST 1 +#define AMDGPU_VM_FAULT_STOP_ALWAYS 2 + +struct amdgpu_vm_pt { + struct amdgpu_bo *bo; + uint64_t addr; +}; + +struct amdgpu_vm { + /* tree of virtual addresses mapped */ + struct rb_root va; + + /* protecting invalidated */ + spinlock_t status_lock; + + /* BOs moved, but not yet updated in the PT */ + struct list_head invalidated; + + /* BOs cleared in the PT because of a move */ + struct list_head cleared; + + /* BO mappings freed, but not yet updated in the PT */ + struct list_head freed; + + /* contains the page directory */ + struct amdgpu_bo *page_directory; + unsigned max_pde_used; + struct dma_fence *page_directory_fence; + uint64_t last_eviction_counter; + + /* array of page tables, one for each page directory entry */ + struct amdgpu_vm_pt *page_tables; + + /* for id and flush management per ring */ + struct amdgpu_vm_id *ids[AMDGPU_MAX_RINGS]; + + /* protecting freed */ + spinlock_t freed_lock; + + /* Scheduler entity for page table updates */ + struct amd_sched_entity entity; + + /* client id */ + u64 client_id; +}; + +struct amdgpu_vm_id { + struct list_head list; + struct dma_fence *first; + struct amdgpu_sync active; + struct dma_fence *last_flush; + atomic64_t owner; + + uint64_t pd_gpu_addr; + /* last flushed PD/PT update */ + struct dma_fence *flushed_updates; + + uint32_t current_gpu_reset_count; + + uint32_t gds_base; + uint32_t gds_size; + uint32_t gws_base; + uint32_t gws_size; + uint32_t oa_base; + uint32_t oa_size; +}; + +struct amdgpu_vm_manager { + /* Handling of VMIDs */ + struct mutex lock; + unsigned num_ids; + struct list_head ids_lru; + struct amdgpu_vm_id ids[AMDGPU_NUM_VM]; + + /* Handling of VM fences */ + u64 fence_context; + unsigned seqno[AMDGPU_MAX_RINGS]; + + uint32_t max_pfn; + /* vram base address for page table entry */ + u64 vram_base_offset; + /* is vm enabled? */ + bool enabled; + /* vm pte handling */ + const struct amdgpu_vm_pte_funcs *vm_pte_funcs; + struct amdgpu_ring *vm_pte_rings[AMDGPU_MAX_RINGS]; + unsigned vm_pte_num_rings; + atomic_t vm_pte_next_ring; + /* client id counter */ + atomic64_t client_counter; +}; + +void amdgpu_vm_manager_init(struct amdgpu_device *adev); +void amdgpu_vm_manager_fini(struct amdgpu_device *adev); +int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm); +void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm); +void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm, + struct list_head *validated, + struct amdgpu_bo_list_entry *entry); +int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm, + int (*callback)(void *p, struct amdgpu_bo *bo), + void *param); +void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev, + struct amdgpu_vm *vm); +int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, + struct amdgpu_sync *sync, struct dma_fence *fence, + struct amdgpu_job *job); +int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job); +void amdgpu_vm_reset_id(struct amdgpu_device *adev, unsigned vm_id); +int amdgpu_vm_update_page_directory(struct amdgpu_device *adev, + struct amdgpu_vm *vm); +int amdgpu_vm_clear_freed(struct amdgpu_device *adev, + struct amdgpu_vm *vm); +int amdgpu_vm_clear_invalids(struct amdgpu_device *adev, struct amdgpu_vm *vm, + struct amdgpu_sync *sync); +int amdgpu_vm_bo_update(struct amdgpu_device *adev, + struct amdgpu_bo_va *bo_va, + bool clear); +void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev, + struct amdgpu_bo *bo); +struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm, + struct amdgpu_bo *bo); +struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + struct amdgpu_bo *bo); +int amdgpu_vm_bo_map(struct amdgpu_device *adev, + struct amdgpu_bo_va *bo_va, + uint64_t addr, uint64_t offset, + uint64_t size, uint32_t flags); +int amdgpu_vm_bo_unmap(struct amdgpu_device *adev, + struct amdgpu_bo_va *bo_va, + uint64_t addr); +void amdgpu_vm_bo_rmv(struct amdgpu_device *adev, + struct amdgpu_bo_va *bo_va); + +#endif |