diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gart.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_gart.c | 425 |
1 files changed, 397 insertions, 28 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index ba7ab79e12c..010dad8b66a 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -157,9 +157,6 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset, p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); for (i = 0; i < pages; i++, p++) { if (rdev->gart.pages[p]) { - if (!rdev->gart.ttm_alloced[p]) - pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p], - PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); rdev->gart.pages[p] = NULL; rdev->gart.pages_addr[p] = rdev->dummy_page.addr; page_base = rdev->gart.pages_addr[p]; @@ -191,23 +188,7 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset, p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); for (i = 0; i < pages; i++, p++) { - /* we reverted the patch using dma_addr in TTM for now but this - * code stops building on alpha so just comment it out for now */ - if (0) { /*dma_addr[i] != DMA_ERROR_CODE) */ - rdev->gart.ttm_alloced[p] = true; - rdev->gart.pages_addr[p] = dma_addr[i]; - } else { - /* we need to support large memory configurations */ - /* assume that unbind have already been call on the range */ - rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i], - 0, PAGE_SIZE, - PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) { - /* FIXME: failed to map page (return -ENOMEM?) */ - radeon_gart_unbind(rdev, offset, pages); - return -ENOMEM; - } - } + rdev->gart.pages_addr[p] = dma_addr[i]; rdev->gart.pages[p] = pagelist[i]; if (rdev->gart.ptr) { page_base = rdev->gart.pages_addr[p]; @@ -274,12 +255,6 @@ int radeon_gart_init(struct radeon_device *rdev) radeon_gart_fini(rdev); return -ENOMEM; } - rdev->gart.ttm_alloced = kzalloc(sizeof(bool) * - rdev->gart.num_cpu_pages, GFP_KERNEL); - if (rdev->gart.ttm_alloced == NULL) { - radeon_gart_fini(rdev); - return -ENOMEM; - } /* set GART entry to point to the dummy page by default */ for (i = 0; i < rdev->gart.num_cpu_pages; i++) { rdev->gart.pages_addr[i] = rdev->dummy_page.addr; @@ -296,10 +271,404 @@ void radeon_gart_fini(struct radeon_device *rdev) rdev->gart.ready = false; kfree(rdev->gart.pages); kfree(rdev->gart.pages_addr); - kfree(rdev->gart.ttm_alloced); rdev->gart.pages = NULL; rdev->gart.pages_addr = NULL; - rdev->gart.ttm_alloced = NULL; radeon_dummy_page_fini(rdev); } + +/* + * vm helpers + * + * TODO bind a default page at vm initialization for default address + */ +int radeon_vm_manager_init(struct radeon_device *rdev) +{ + int r; + + rdev->vm_manager.enabled = false; + + /* mark first vm as always in use, it's the system one */ + r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager, + rdev->vm_manager.max_pfn * 8, + RADEON_GEM_DOMAIN_VRAM); + if (r) { + dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n", + (rdev->vm_manager.max_pfn * 8) >> 10); + return r; + } + + r = rdev->vm_manager.funcs->init(rdev); + if (r == 0) + rdev->vm_manager.enabled = true; + + return r; +} + +/* cs mutex must be lock */ +static void radeon_vm_unbind_locked(struct radeon_device *rdev, + struct radeon_vm *vm) +{ + struct radeon_bo_va *bo_va; + + if (vm->id == -1) { + return; + } + + /* wait for vm use to end */ + if (vm->fence) { + radeon_fence_wait(vm->fence, false); + radeon_fence_unref(&vm->fence); + } + + /* hw unbind */ + rdev->vm_manager.funcs->unbind(rdev, vm); + rdev->vm_manager.use_bitmap &= ~(1 << vm->id); + list_del_init(&vm->list); + vm->id = -1; + radeon_sa_bo_free(rdev, &vm->sa_bo); + vm->pt = NULL; + + list_for_each_entry(bo_va, &vm->va, vm_list) { + bo_va->valid = false; + } +} + +void radeon_vm_manager_fini(struct radeon_device *rdev) +{ + if (rdev->vm_manager.sa_manager.bo == NULL) + return; + radeon_vm_manager_suspend(rdev); + rdev->vm_manager.funcs->fini(rdev); + radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager); + rdev->vm_manager.enabled = false; +} + +int radeon_vm_manager_start(struct radeon_device *rdev) +{ + if (rdev->vm_manager.sa_manager.bo == NULL) { + return -EINVAL; + } + return radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager); +} + +int radeon_vm_manager_suspend(struct radeon_device *rdev) +{ + struct radeon_vm *vm, *tmp; + + radeon_mutex_lock(&rdev->cs_mutex); + /* unbind all active vm */ + list_for_each_entry_safe(vm, tmp, &rdev->vm_manager.lru_vm, list) { + radeon_vm_unbind_locked(rdev, vm); + } + rdev->vm_manager.funcs->fini(rdev); + radeon_mutex_unlock(&rdev->cs_mutex); + return radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager); +} + +/* cs mutex must be lock */ +void radeon_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm) +{ + mutex_lock(&vm->mutex); + radeon_vm_unbind_locked(rdev, vm); + mutex_unlock(&vm->mutex); +} + +/* cs mutex must be lock & vm mutex must be lock */ +int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm) +{ + struct radeon_vm *vm_evict; + unsigned i; + int id = -1, r; + + if (vm == NULL) { + return -EINVAL; + } + + if (vm->id != -1) { + /* update lru */ + list_del_init(&vm->list); + list_add_tail(&vm->list, &rdev->vm_manager.lru_vm); + return 0; + } + +retry: + r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, &vm->sa_bo, + RADEON_GPU_PAGE_ALIGN(vm->last_pfn * 8), + RADEON_GPU_PAGE_SIZE); + if (r) { + if (list_empty(&rdev->vm_manager.lru_vm)) { + return r; + } + vm_evict = list_first_entry(&rdev->vm_manager.lru_vm, struct radeon_vm, list); + radeon_vm_unbind(rdev, vm_evict); + goto retry; + } + vm->pt = rdev->vm_manager.sa_manager.cpu_ptr; + vm->pt += (vm->sa_bo.offset >> 3); + vm->pt_gpu_addr = rdev->vm_manager.sa_manager.gpu_addr; + vm->pt_gpu_addr += vm->sa_bo.offset; + memset(vm->pt, 0, RADEON_GPU_PAGE_ALIGN(vm->last_pfn * 8)); + +retry_id: + /* search for free vm */ + for (i = 0; i < rdev->vm_manager.nvm; i++) { + if (!(rdev->vm_manager.use_bitmap & (1 << i))) { + id = i; + break; + } + } + /* evict vm if necessary */ + if (id == -1) { + vm_evict = list_first_entry(&rdev->vm_manager.lru_vm, struct radeon_vm, list); + radeon_vm_unbind(rdev, vm_evict); + goto retry_id; + } + + /* do hw bind */ + r = rdev->vm_manager.funcs->bind(rdev, vm, id); + if (r) { + radeon_sa_bo_free(rdev, &vm->sa_bo); + return r; + } + rdev->vm_manager.use_bitmap |= 1 << id; + vm->id = id; + list_add_tail(&vm->list, &rdev->vm_manager.lru_vm); + return radeon_vm_bo_update_pte(rdev, vm, rdev->ib_pool.sa_manager.bo, + &rdev->ib_pool.sa_manager.bo->tbo.mem); +} + +/* object have to be reserved */ +int radeon_vm_bo_add(struct radeon_device *rdev, + struct radeon_vm *vm, + struct radeon_bo *bo, + uint64_t offset, + uint32_t flags) +{ + struct radeon_bo_va *bo_va, *tmp; + struct list_head *head; + uint64_t size = radeon_bo_size(bo), last_offset = 0; + unsigned last_pfn; + + bo_va = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL); + if (bo_va == NULL) { + return -ENOMEM; + } + bo_va->vm = vm; + bo_va->bo = bo; + bo_va->soffset = offset; + bo_va->eoffset = offset + size; + bo_va->flags = flags; + bo_va->valid = false; + INIT_LIST_HEAD(&bo_va->bo_list); + INIT_LIST_HEAD(&bo_va->vm_list); + /* make sure object fit at this offset */ + if (bo_va->soffset >= bo_va->eoffset) { + kfree(bo_va); + return -EINVAL; + } + + last_pfn = bo_va->eoffset / RADEON_GPU_PAGE_SIZE; + if (last_pfn > rdev->vm_manager.max_pfn) { + kfree(bo_va); + dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n", + last_pfn, rdev->vm_manager.max_pfn); + return -EINVAL; + } + + mutex_lock(&vm->mutex); + if (last_pfn > vm->last_pfn) { + /* grow va space 32M by 32M */ + unsigned align = ((32 << 20) >> 12) - 1; + radeon_mutex_lock(&rdev->cs_mutex); + radeon_vm_unbind_locked(rdev, vm); + radeon_mutex_unlock(&rdev->cs_mutex); + vm->last_pfn = (last_pfn + align) & ~align; + } + head = &vm->va; + last_offset = 0; + list_for_each_entry(tmp, &vm->va, vm_list) { + if (bo_va->soffset >= last_offset && bo_va->eoffset < tmp->soffset) { + /* bo can be added before this one */ + break; + } + if (bo_va->soffset >= tmp->soffset && bo_va->soffset < tmp->eoffset) { + /* bo and tmp overlap, invalid offset */ + dev_err(rdev->dev, "bo %p va 0x%08X conflict with (bo %p 0x%08X 0x%08X)\n", + bo, (unsigned)bo_va->soffset, tmp->bo, + (unsigned)tmp->soffset, (unsigned)tmp->eoffset); + kfree(bo_va); + mutex_unlock(&vm->mutex); + return -EINVAL; + } + last_offset = tmp->eoffset; + head = &tmp->vm_list; + } + list_add(&bo_va->vm_list, head); + list_add_tail(&bo_va->bo_list, &bo->va); + mutex_unlock(&vm->mutex); + return 0; +} + +static u64 radeon_vm_get_addr(struct radeon_device *rdev, + struct ttm_mem_reg *mem, + unsigned pfn) +{ + u64 addr = 0; + + switch (mem->mem_type) { + case TTM_PL_VRAM: + addr = (mem->start << PAGE_SHIFT); + addr += pfn * RADEON_GPU_PAGE_SIZE; + addr += rdev->vm_manager.vram_base_offset; + break; + case TTM_PL_TT: + /* offset inside page table */ + addr = mem->start << PAGE_SHIFT; + addr += pfn * RADEON_GPU_PAGE_SIZE; + addr = addr >> PAGE_SHIFT; + /* page table offset */ + addr = rdev->gart.pages_addr[addr]; + /* in case cpu page size != gpu page size*/ + addr += (pfn * RADEON_GPU_PAGE_SIZE) & (~PAGE_MASK); + break; + default: + break; + } + return addr; +} + +/* object have to be reserved & cs mutex took & vm mutex took */ +int radeon_vm_bo_update_pte(struct radeon_device *rdev, + struct radeon_vm *vm, + struct radeon_bo *bo, + struct ttm_mem_reg *mem) +{ + struct radeon_bo_va *bo_va; + unsigned ngpu_pages, i; + uint64_t addr = 0, pfn; + uint32_t flags; + + /* nothing to do if vm isn't bound */ + if (vm->id == -1) + return 0;; + + bo_va = radeon_bo_va(bo, vm); + if (bo_va == NULL) { + dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm); + return -EINVAL; + } + + if (bo_va->valid) + return 0; + + ngpu_pages = radeon_bo_ngpu_pages(bo); + bo_va->flags &= ~RADEON_VM_PAGE_VALID; + bo_va->flags &= ~RADEON_VM_PAGE_SYSTEM; + if (mem) { + if (mem->mem_type != TTM_PL_SYSTEM) { + bo_va->flags |= RADEON_VM_PAGE_VALID; + bo_va->valid = true; + } + if (mem->mem_type == TTM_PL_TT) { + bo_va->flags |= RADEON_VM_PAGE_SYSTEM; + } + } + pfn = bo_va->soffset / RADEON_GPU_PAGE_SIZE; + flags = rdev->vm_manager.funcs->page_flags(rdev, bo_va->vm, bo_va->flags); + for (i = 0, addr = 0; i < ngpu_pages; i++) { + if (mem && bo_va->valid) { + addr = radeon_vm_get_addr(rdev, mem, i); + } + rdev->vm_manager.funcs->set_page(rdev, bo_va->vm, i + pfn, addr, flags); + } + rdev->vm_manager.funcs->tlb_flush(rdev, bo_va->vm); + return 0; +} + +/* object have to be reserved */ +int radeon_vm_bo_rmv(struct radeon_device *rdev, + struct radeon_vm *vm, + struct radeon_bo *bo) +{ + struct radeon_bo_va *bo_va; + + bo_va = radeon_bo_va(bo, vm); + if (bo_va == NULL) + return 0; + + list_del(&bo_va->bo_list); + mutex_lock(&vm->mutex); + radeon_mutex_lock(&rdev->cs_mutex); + radeon_vm_bo_update_pte(rdev, vm, bo, NULL); + radeon_mutex_unlock(&rdev->cs_mutex); + list_del(&bo_va->vm_list); + mutex_unlock(&vm->mutex); + + kfree(bo_va); + return 0; +} + +void radeon_vm_bo_invalidate(struct radeon_device *rdev, + struct radeon_bo *bo) +{ + struct radeon_bo_va *bo_va; + + BUG_ON(!atomic_read(&bo->tbo.reserved)); + list_for_each_entry(bo_va, &bo->va, bo_list) { + bo_va->valid = false; + } +} + +int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm) +{ + int r; + + vm->id = -1; + vm->fence = NULL; + mutex_init(&vm->mutex); + INIT_LIST_HEAD(&vm->list); + INIT_LIST_HEAD(&vm->va); + vm->last_pfn = 0; + /* map the ib pool buffer at 0 in virtual address space, set + * read only + */ + r = radeon_vm_bo_add(rdev, vm, rdev->ib_pool.sa_manager.bo, 0, + RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED); + return r; +} + +void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm) +{ + struct radeon_bo_va *bo_va, *tmp; + int r; + + mutex_lock(&vm->mutex); + + radeon_mutex_lock(&rdev->cs_mutex); + radeon_vm_unbind_locked(rdev, vm); + radeon_mutex_unlock(&rdev->cs_mutex); + + /* remove all bo */ + r = radeon_bo_reserve(rdev->ib_pool.sa_manager.bo, false); + if (!r) { + bo_va = radeon_bo_va(rdev->ib_pool.sa_manager.bo, vm); + list_del_init(&bo_va->bo_list); + list_del_init(&bo_va->vm_list); + radeon_bo_unreserve(rdev->ib_pool.sa_manager.bo); + kfree(bo_va); + } + if (!list_empty(&vm->va)) { + dev_err(rdev->dev, "still active bo inside vm\n"); + } + list_for_each_entry_safe(bo_va, tmp, &vm->va, vm_list) { + list_del_init(&bo_va->vm_list); + r = radeon_bo_reserve(bo_va->bo, false); + if (!r) { + list_del_init(&bo_va->bo_list); + radeon_bo_unreserve(bo_va->bo); + kfree(bo_va); + } + } + mutex_unlock(&vm->mutex); +} |