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path: root/drivers/gpu/drm/radeon/radeon_gart.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gart.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_gart.c425
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);
+}