diff options
Diffstat (limited to 'linux-core/nouveau_sgdma.c')
| -rw-r--r-- | linux-core/nouveau_sgdma.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/linux-core/nouveau_sgdma.c b/linux-core/nouveau_sgdma.c index b86c5d7c..cc4d5a92 100644 --- a/linux-core/nouveau_sgdma.c +++ b/linux-core/nouveau_sgdma.c @@ -25,7 +25,7 @@ nouveau_sgdma_needs_ub_cache_adjust(struct drm_ttm_backend *be) static int nouveau_sgdma_populate(struct drm_ttm_backend *be, unsigned long num_pages, - struct page **pages) + struct page **pages, struct page *dummy_read_page) { struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be; int p, d, o; @@ -41,8 +41,11 @@ nouveau_sgdma_populate(struct drm_ttm_backend *be, unsigned long num_pages, nvbe->pages_populated = d = 0; for (p = 0; p < num_pages; p++) { for (o = 0; o < PAGE_SIZE; o += NV_CTXDMA_PAGE_SIZE) { + struct page *page = pages[p]; + if (!page) + page = dummy_read_page; nvbe->pagelist[d] = pci_map_page(nvbe->dev->pdev, - pages[p], o, + page, o, NV_CTXDMA_PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); if (pci_dma_mapping_error(nvbe->pagelist[d])) { @@ -128,7 +131,7 @@ nouveau_sgdma_unbind(struct drm_ttm_backend *be) if (nvbe->is_bound) { struct nouveau_gpuobj *gpuobj = dev_priv->gart_info.sg_ctxdma; unsigned int pte; - + pte = nvbe->pte_start; while (pte < (nvbe->pte_start + nvbe->pages)) { uint64_t pteval = dev_priv->gart_info.sg_dummy_bus; @@ -136,8 +139,8 @@ nouveau_sgdma_unbind(struct drm_ttm_backend *be) if (dev_priv->card_type < NV_50) { INSTANCE_WR(gpuobj, pte, pteval | 3); } else { - INSTANCE_WR(gpuobj, (pte<<1)+0, 0x00000010); - INSTANCE_WR(gpuobj, (pte<<1)+1, 0x00000004); + INSTANCE_WR(gpuobj, (pte<<1)+0, pteval | 0x21); + INSTANCE_WR(gpuobj, (pte<<1)+1, 0x00000000); } pte++; @@ -218,15 +221,14 @@ nouveau_sgdma_init(struct drm_device *dev) return ret; } - if (dev_priv->card_type < NV_50) { - dev_priv->gart_info.sg_dummy_page = - alloc_page(GFP_KERNEL|__GFP_DMA32); - SetPageLocked(dev_priv->gart_info.sg_dummy_page); - dev_priv->gart_info.sg_dummy_bus = - pci_map_page(dev->pdev, - dev_priv->gart_info.sg_dummy_page, 0, - PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + dev_priv->gart_info.sg_dummy_page = + alloc_page(GFP_KERNEL|__GFP_DMA32); + SetPageLocked(dev_priv->gart_info.sg_dummy_page); + dev_priv->gart_info.sg_dummy_bus = + pci_map_page(dev->pdev, dev_priv->gart_info.sg_dummy_page, 0, + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + if (dev_priv->card_type < NV_50) { /* Maybe use NV_DMA_TARGET_AGP for PCIE? NVIDIA do this, and * confirmed to work on c51. Perhaps means NV_DMA_TARGET_PCIE * on those cards? */ @@ -242,8 +244,9 @@ nouveau_sgdma_init(struct drm_device *dev) } } else { for (i=0; i<obj_size; i+=8) { - INSTANCE_WR(gpuobj, (i+0)/4, 0); //x00000010); - INSTANCE_WR(gpuobj, (i+4)/4, 0); //0x00000004); + INSTANCE_WR(gpuobj, (i+0)/4, + dev_priv->gart_info.sg_dummy_bus | 0x21); + INSTANCE_WR(gpuobj, (i+4)/4, 0); } } @@ -299,7 +302,7 @@ nouveau_sgdma_nottm_hack_init(struct drm_device *dev) } dev_priv->gart_info.sg_handle = sgreq.handle; - if ((ret = be->func->populate(be, dev->sg->pages, dev->sg->pagelist))) { + if ((ret = be->func->populate(be, dev->sg->pages, dev->sg->pagelist, dev->bm.dummy_read_page))) { DRM_ERROR("failed populate: %d\n", ret); return ret; } @@ -336,4 +339,3 @@ nouveau_sgdma_get_page(struct drm_device *dev, uint32_t offset, uint32_t *page) DRM_ERROR("Unimplemented on NV50\n"); return -EINVAL; } - |