diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 289 |
1 files changed, 193 insertions, 96 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 5795f81369f0..250c8e80e646 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -77,8 +77,6 @@ struct amdgpu_pte_update_params { void (*func)(struct amdgpu_pte_update_params *params, uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint64_t flags); - /* indicate update pt or its shadow */ - bool shadow; /* The next two are used during VM update by CPU * DMA addresses to use for mapping * Kernel pointer of PD/PT BO that needs to be updated @@ -161,11 +159,17 @@ void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm, */ static int amdgpu_vm_validate_level(struct amdgpu_vm_pt *parent, int (*validate)(void *, struct amdgpu_bo *), - void *param) + void *param, bool use_cpu_for_update) { unsigned i; int r; + if (use_cpu_for_update) { + r = amdgpu_bo_kmap(parent->bo, NULL); + if (r) + return r; + } + if (!parent->entries) return 0; @@ -183,7 +187,8 @@ static int amdgpu_vm_validate_level(struct amdgpu_vm_pt *parent, * Recurse into the sub directory. This is harmless because we * have only a maximum of 5 layers. */ - r = amdgpu_vm_validate_level(entry, validate, param); + r = amdgpu_vm_validate_level(entry, validate, param, + use_cpu_for_update); if (r) return r; } @@ -214,7 +219,8 @@ int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm, if (num_evictions == vm->last_eviction_counter) return 0; - return amdgpu_vm_validate_level(&vm->root, validate, param); + return amdgpu_vm_validate_level(&vm->root, validate, param, + vm->use_cpu_for_update); } /** @@ -331,6 +337,14 @@ static int amdgpu_vm_alloc_levels(struct amdgpu_device *adev, if (r) return r; + if (vm->use_cpu_for_update) { + r = amdgpu_bo_kmap(pt, NULL); + if (r) { + amdgpu_bo_unref(&pt); + return r; + } + } + /* Keep a reference to the root directory to avoid * freeing them up in the wrong order. */ @@ -338,6 +352,7 @@ static int amdgpu_vm_alloc_levels(struct amdgpu_device *adev, entry->bo = pt; entry->addr = 0; + entry->huge_page = false; } if (level < adev->vm_manager.num_level) { @@ -424,7 +439,7 @@ static int amdgpu_vm_grab_reserved_vmid_locked(struct amdgpu_vm *vm, struct dma_fence *updates = sync->last_vm_update; int r = 0; struct dma_fence *flushed, *tmp; - bool needs_flush = false; + bool needs_flush = vm->use_cpu_for_update; flushed = id->flushed_updates; if ((amdgpu_vm_had_gpu_reset(adev, id)) || @@ -545,11 +560,11 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, } kfree(fences); - job->vm_needs_flush = false; + job->vm_needs_flush = vm->use_cpu_for_update; /* Check if we can use a VMID already assigned to this VM */ list_for_each_entry_reverse(id, &id_mgr->ids_lru, list) { struct dma_fence *flushed; - bool needs_flush = false; + bool needs_flush = vm->use_cpu_for_update; /* Check all the prerequisites to using this VMID */ if (amdgpu_vm_had_gpu_reset(adev, id)) @@ -745,7 +760,7 @@ static bool amdgpu_vm_is_large_bar(struct amdgpu_device *adev) * * Emit a VM flush when it is necessary. */ -int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job) +int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync) { struct amdgpu_device *adev = ring->adev; unsigned vmhub = ring->funcs->vmhub; @@ -767,12 +782,15 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job) vm_flush_needed = true; } - if (!vm_flush_needed && !gds_switch_needed) + if (!vm_flush_needed && !gds_switch_needed && !need_pipe_sync) return 0; if (ring->funcs->init_cond_exec) patch_offset = amdgpu_ring_init_cond_exec(ring); + if (need_pipe_sync) + amdgpu_ring_emit_pipeline_sync(ring); + if (ring->funcs->emit_vm_flush && vm_flush_needed) { struct dma_fence *fence; @@ -981,6 +999,8 @@ static void amdgpu_vm_cpu_set_ptes(struct amdgpu_pte_update_params *params, unsigned int i; uint64_t value; + trace_amdgpu_vm_set_ptes(pe, addr, count, incr, flags); + for (i = 0; i < count; i++) { value = params->pages_addr ? amdgpu_vm_map_gart(params->pages_addr, addr) : @@ -989,19 +1009,16 @@ static void amdgpu_vm_cpu_set_ptes(struct amdgpu_pte_update_params *params, i, value, flags); addr += incr; } - - /* Flush HDP */ - mb(); - amdgpu_gart_flush_gpu_tlb(params->adev, 0); } -static int amdgpu_vm_bo_wait(struct amdgpu_device *adev, struct amdgpu_bo *bo) +static int amdgpu_vm_wait_pd(struct amdgpu_device *adev, struct amdgpu_vm *vm, + void *owner) { struct amdgpu_sync sync; int r; amdgpu_sync_create(&sync); - amdgpu_sync_resv(adev, &sync, bo->tbo.resv, AMDGPU_FENCE_OWNER_VM); + amdgpu_sync_resv(adev, &sync, vm->root.bo->tbo.resv, owner); r = amdgpu_sync_wait(&sync, true); amdgpu_sync_free(&sync); @@ -1042,16 +1059,12 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev, params.adev = adev; shadow = parent->bo->shadow; - WARN_ON(vm->use_cpu_for_update && shadow); - if (vm->use_cpu_for_update && !shadow) { - r = amdgpu_bo_kmap(parent->bo, (void **)&pd_addr); - if (r) - return r; - r = amdgpu_vm_bo_wait(adev, parent->bo); - if (unlikely(r)) { - amdgpu_bo_kunmap(parent->bo); + if (vm->use_cpu_for_update) { + pd_addr = (unsigned long)parent->bo->kptr; + r = amdgpu_vm_wait_pd(adev, vm, AMDGPU_FENCE_OWNER_VM); + if (unlikely(r)) return r; - } + params.func = amdgpu_vm_cpu_set_ptes; } else { if (shadow) { @@ -1105,7 +1118,8 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev, pt = amdgpu_bo_gpu_offset(bo); pt = amdgpu_gart_get_vm_pde(adev, pt); - if (parent->entries[pt_idx].addr == pt) + if (parent->entries[pt_idx].addr == pt || + parent->entries[pt_idx].huge_page) continue; parent->entries[pt_idx].addr = pt; @@ -1146,28 +1160,29 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev, count, incr, AMDGPU_PTE_VALID); } - if (params.func == amdgpu_vm_cpu_set_ptes) - amdgpu_bo_kunmap(parent->bo); - else if (params.ib->length_dw == 0) { - amdgpu_job_free(job); - } else { - amdgpu_ring_pad_ib(ring, params.ib); - amdgpu_sync_resv(adev, &job->sync, parent->bo->tbo.resv, - AMDGPU_FENCE_OWNER_VM); - if (shadow) - amdgpu_sync_resv(adev, &job->sync, shadow->tbo.resv, + if (!vm->use_cpu_for_update) { + if (params.ib->length_dw == 0) { + amdgpu_job_free(job); + } else { + amdgpu_ring_pad_ib(ring, params.ib); + amdgpu_sync_resv(adev, &job->sync, parent->bo->tbo.resv, AMDGPU_FENCE_OWNER_VM); + if (shadow) + amdgpu_sync_resv(adev, &job->sync, + shadow->tbo.resv, + AMDGPU_FENCE_OWNER_VM); + + WARN_ON(params.ib->length_dw > ndw); + r = amdgpu_job_submit(job, ring, &vm->entity, + AMDGPU_FENCE_OWNER_VM, &fence); + if (r) + goto error_free; - WARN_ON(params.ib->length_dw > ndw); - r = amdgpu_job_submit(job, ring, &vm->entity, - AMDGPU_FENCE_OWNER_VM, &fence); - if (r) - goto error_free; - - amdgpu_bo_fence(parent->bo, fence, true); - dma_fence_put(vm->last_dir_update); - vm->last_dir_update = dma_fence_get(fence); - dma_fence_put(fence); + amdgpu_bo_fence(parent->bo, fence, true); + dma_fence_put(vm->last_dir_update); + vm->last_dir_update = dma_fence_get(fence); + dma_fence_put(fence); + } } /* * Recurse into the subdirectories. This recursion is harmless because @@ -1235,33 +1250,105 @@ int amdgpu_vm_update_directories(struct amdgpu_device *adev, if (r) amdgpu_vm_invalidate_level(&vm->root); + if (vm->use_cpu_for_update) { + /* Flush HDP */ + mb(); + amdgpu_gart_flush_gpu_tlb(adev, 0); + } + return r; } /** - * amdgpu_vm_find_pt - find the page table for an address + * amdgpu_vm_find_entry - find the entry for an address * * @p: see amdgpu_pte_update_params definition * @addr: virtual address in question + * @entry: resulting entry or NULL + * @parent: parent entry * - * Find the page table BO for a virtual address, return NULL when none found. + * Find the vm_pt entry and it's parent for the given address. */ -static struct amdgpu_bo *amdgpu_vm_get_pt(struct amdgpu_pte_update_params *p, - uint64_t addr) +void amdgpu_vm_get_entry(struct amdgpu_pte_update_params *p, uint64_t addr, + struct amdgpu_vm_pt **entry, + struct amdgpu_vm_pt **parent) { - struct amdgpu_vm_pt *entry = &p->vm->root; unsigned idx, level = p->adev->vm_manager.num_level; - while (entry->entries) { + *parent = NULL; + *entry = &p->vm->root; + while ((*entry)->entries) { idx = addr >> (p->adev->vm_manager.block_size * level--); - idx %= amdgpu_bo_size(entry->bo) / 8; - entry = &entry->entries[idx]; + idx %= amdgpu_bo_size((*entry)->bo) / 8; + *parent = *entry; + *entry = &(*entry)->entries[idx]; } if (level) - return NULL; + *entry = NULL; +} + +/** + * amdgpu_vm_handle_huge_pages - handle updating the PD with huge pages + * + * @p: see amdgpu_pte_update_params definition + * @entry: vm_pt entry to check + * @parent: parent entry + * @nptes: number of PTEs updated with this operation + * @dst: destination address where the PTEs should point to + * @flags: access flags fro the PTEs + * + * Check if we can update the PD with a huge page. + */ +static int amdgpu_vm_handle_huge_pages(struct amdgpu_pte_update_params *p, + struct amdgpu_vm_pt *entry, + struct amdgpu_vm_pt *parent, + unsigned nptes, uint64_t dst, + uint64_t flags) +{ + bool use_cpu_update = (p->func == amdgpu_vm_cpu_set_ptes); + uint64_t pd_addr, pde; + int r; - return entry->bo; + /* In the case of a mixed PT the PDE must point to it*/ + if (p->adev->asic_type < CHIP_VEGA10 || + nptes != AMDGPU_VM_PTE_COUNT(p->adev) || + p->func == amdgpu_vm_do_copy_ptes || + !(flags & AMDGPU_PTE_VALID)) { + + dst = amdgpu_bo_gpu_offset(entry->bo); + dst = amdgpu_gart_get_vm_pde(p->adev, dst); + flags = AMDGPU_PTE_VALID; + } else { + flags |= AMDGPU_PDE_PTE; + } + + if (entry->addr == dst && + entry->huge_page == !!(flags & AMDGPU_PDE_PTE)) + return 0; + + entry->addr = dst; + entry->huge_page = !!(flags & AMDGPU_PDE_PTE); + + if (use_cpu_update) { + r = amdgpu_bo_kmap(parent->bo, (void *)&pd_addr); + if (r) + return r; + + pde = pd_addr + (entry - parent->entries) * 8; + amdgpu_vm_cpu_set_ptes(p, pde, dst, 1, 0, flags); + } else { + if (parent->bo->shadow) { + pd_addr = amdgpu_bo_gpu_offset(parent->bo->shadow); + pde = pd_addr + (entry - parent->entries) * 8; + amdgpu_vm_do_set_ptes(p, pde, dst, 1, 0, flags); + } + pd_addr = amdgpu_bo_gpu_offset(parent->bo); + pde = pd_addr + (entry - parent->entries) * 8; + amdgpu_vm_do_set_ptes(p, pde, dst, 1, 0, flags); + } + + return 0; } /** @@ -1287,49 +1374,47 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params, uint64_t addr, pe_start; struct amdgpu_bo *pt; unsigned nptes; - int r; bool use_cpu_update = (params->func == amdgpu_vm_cpu_set_ptes); - + int r; /* walk over the address space and update the page tables */ - for (addr = start; addr < end; addr += nptes) { - pt = amdgpu_vm_get_pt(params, addr); - if (!pt) { - pr_err("PT not found, aborting update_ptes\n"); - return -EINVAL; - } + for (addr = start; addr < end; addr += nptes, + dst += nptes * AMDGPU_GPU_PAGE_SIZE) { + struct amdgpu_vm_pt *entry, *parent; - if (params->shadow) { - if (WARN_ONCE(use_cpu_update, - "CPU VM update doesn't suuport shadow pages")) - return 0; - - if (!pt->shadow) - return 0; - pt = pt->shadow; - } + amdgpu_vm_get_entry(params, addr, &entry, &parent); + if (!entry) + return -ENOENT; if ((addr & ~mask) == (end & ~mask)) nptes = end - addr; else nptes = AMDGPU_VM_PTE_COUNT(adev) - (addr & mask); + r = amdgpu_vm_handle_huge_pages(params, entry, parent, + nptes, dst, flags); + if (r) + return r; + + if (entry->huge_page) + continue; + + pt = entry->bo; if (use_cpu_update) { - r = amdgpu_bo_kmap(pt, (void *)&pe_start); - if (r) - return r; - } else + pe_start = (unsigned long)pt->kptr; + } else { + if (pt->shadow) { + pe_start = amdgpu_bo_gpu_offset(pt->shadow); + pe_start += (addr & mask) * 8; + params->func(params, pe_start, dst, nptes, + AMDGPU_GPU_PAGE_SIZE, flags); + } pe_start = amdgpu_bo_gpu_offset(pt); + } pe_start += (addr & mask) * 8; - params->func(params, pe_start, dst, nptes, AMDGPU_GPU_PAGE_SIZE, flags); - - dst += nptes * AMDGPU_GPU_PAGE_SIZE; - - if (use_cpu_update) - amdgpu_bo_kunmap(pt); } return 0; @@ -1372,8 +1457,9 @@ static int amdgpu_vm_frag_ptes(struct amdgpu_pte_update_params *params, */ /* SI and newer are optimized for 64KB */ - uint64_t frag_flags = AMDGPU_PTE_FRAG(AMDGPU_LOG2_PAGES_PER_FRAG); - uint64_t frag_align = 1 << AMDGPU_LOG2_PAGES_PER_FRAG; + unsigned pages_per_frag = AMDGPU_LOG2_PAGES_PER_FRAG(params->adev); + uint64_t frag_flags = AMDGPU_PTE_FRAG(pages_per_frag); + uint64_t frag_align = 1 << pages_per_frag; uint64_t frag_start = ALIGN(start, frag_align); uint64_t frag_end = end & ~(frag_align - 1); @@ -1445,6 +1531,10 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, params.vm = vm; params.src = src; + /* sync to everything on unmapping */ + if (!(flags & AMDGPU_PTE_VALID)) + owner = AMDGPU_FENCE_OWNER_UNDEFINED; + if (vm->use_cpu_for_update) { /* params.src is used as flag to indicate system Memory */ if (pages_addr) @@ -1453,23 +1543,18 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, /* Wait for PT BOs to be free. PTs share the same resv. object * as the root PD BO */ - r = amdgpu_vm_bo_wait(adev, vm->root.bo); + r = amdgpu_vm_wait_pd(adev, vm, owner); if (unlikely(r)) return r; params.func = amdgpu_vm_cpu_set_ptes; params.pages_addr = pages_addr; - params.shadow = false; return amdgpu_vm_frag_ptes(¶ms, start, last + 1, addr, flags); } ring = container_of(vm->entity.sched, struct amdgpu_ring, sched); - /* sync to everything on unmapping */ - if (!(flags & AMDGPU_PTE_VALID)) - owner = AMDGPU_FENCE_OWNER_UNDEFINED; - nptes = last - start + 1; /* @@ -1481,6 +1566,9 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, /* padding, etc. */ ndw = 64; + /* one PDE write for each huge page */ + ndw += ((nptes >> adev->vm_manager.block_size) + 1) * 6; + if (src) { /* only copy commands needed */ ndw += ncmds * 7; @@ -1542,11 +1630,6 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, if (r) goto error_free; - params.shadow = true; - r = amdgpu_vm_frag_ptes(¶ms, start, last + 1, addr, flags); - if (r) - goto error_free; - params.shadow = false; r = amdgpu_vm_frag_ptes(¶ms, start, last + 1, addr, flags); if (r) goto error_free; @@ -1565,6 +1648,7 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, error_free: amdgpu_job_free(job); + amdgpu_vm_invalidate_level(&vm->root); return r; } @@ -1752,6 +1836,12 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, list_add(&bo_va->vm_status, &vm->cleared); spin_unlock(&vm->status_lock); + if (vm->use_cpu_for_update) { + /* Flush HDP */ + mb(); + amdgpu_gart_flush_gpu_tlb(adev, 0); + } + return 0; } @@ -2457,6 +2547,13 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, goto error_free_root; vm->last_eviction_counter = atomic64_read(&adev->num_evictions); + + if (vm->use_cpu_for_update) { + r = amdgpu_bo_kmap(vm->root.bo, NULL); + if (r) + goto error_free_root; + } + amdgpu_bo_unreserve(vm->root.bo); return 0; |