From 22b33e8ed0e38b8ddcf082e35580f2e67a3a0262 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Mon, 2 Apr 2012 11:53:06 +0100 Subject: nouveau: add PRIME support This adds prime->fd and fd->prime support to nouveau, it passes the SG object to TTM, and then populates the GART entries using it. v2: add stubbed kmap + use new function to fill out pages array for faulting + add reimport test. Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/nouveau/nouveau_bo.c | 42 +++++++++++++++++++++++++++++------- 1 file changed, 34 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/nouveau/nouveau_bo.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 81599d6e636b..4435e115b929 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -89,12 +89,17 @@ nouveau_bo_fixup_align(struct nouveau_bo *nvbo, u32 flags, int nouveau_bo_new(struct drm_device *dev, int size, int align, uint32_t flags, uint32_t tile_mode, uint32_t tile_flags, + struct sg_table *sg, struct nouveau_bo **pnvbo) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_bo *nvbo; size_t acc_size; int ret; + int type = ttm_bo_type_device; + + if (sg) + type = ttm_bo_type_sg; nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL); if (!nvbo) @@ -120,8 +125,8 @@ nouveau_bo_new(struct drm_device *dev, int size, int align, sizeof(struct nouveau_bo)); ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size, - ttm_bo_type_device, &nvbo->placement, - align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL, + type, &nvbo->placement, + align >> PAGE_SHIFT, 0, false, NULL, acc_size, sg, nouveau_bo_del_ttm); if (ret) { /* ttm will call nouveau_bo_del_ttm if it fails.. */ @@ -817,9 +822,14 @@ nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem) } else if (new_mem && new_mem->mem_type == TTM_PL_TT && nvbo->page_shift == vma->vm->spg_shift) { - nouveau_vm_map_sg(vma, 0, new_mem-> - num_pages << PAGE_SHIFT, - new_mem->mm_node); + if (((struct nouveau_mem *)new_mem->mm_node)->sg) + nouveau_vm_map_sg_table(vma, 0, new_mem-> + num_pages << PAGE_SHIFT, + new_mem->mm_node); + else + nouveau_vm_map_sg(vma, 0, new_mem-> + num_pages << PAGE_SHIFT, + new_mem->mm_node); } else { nouveau_vm_unmap(vma); } @@ -1058,10 +1068,19 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) struct drm_device *dev; unsigned i; int r; + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); if (ttm->state != tt_unpopulated) return 0; + if (slave && ttm->sg) { + /* make userspace faulting work */ + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, + ttm_dma->dma_address, ttm->num_pages); + ttm->state = tt_unbound; + return 0; + } + dev_priv = nouveau_bdev(ttm->bdev); dev = dev_priv->dev; @@ -1106,6 +1125,10 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) struct drm_nouveau_private *dev_priv; struct drm_device *dev; unsigned i; + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); + + if (slave) + return; dev_priv = nouveau_bdev(ttm->bdev); dev = dev_priv->dev; @@ -1181,9 +1204,12 @@ nouveau_bo_vma_add(struct nouveau_bo *nvbo, struct nouveau_vm *vm, if (nvbo->bo.mem.mem_type == TTM_PL_VRAM) nouveau_vm_map(vma, nvbo->bo.mem.mm_node); - else - if (nvbo->bo.mem.mem_type == TTM_PL_TT) - nouveau_vm_map_sg(vma, 0, size, node); + else if (nvbo->bo.mem.mem_type == TTM_PL_TT) { + if (node->sg) + nouveau_vm_map_sg_table(vma, 0, size, node); + else + nouveau_vm_map_sg(vma, 0, size, node); + } list_add_tail(&vma->head, &nvbo->vma_list); vma->refcount = 1; -- cgit v1.2.3