diff options
| author | Alexandre Courbot | 2014-07-31 11:09:42 +0200 |
|---|---|---|
| committer | Ben Skeggs | 2014-08-09 21:11:11 +0200 |
| commit | fd1496a0fc77f955317d6ca511f66a9e788e7e02 (patch) | |
| tree | 131727e8c03885892c16e0c69f3f5064ca041b98 /drivers/gpu/drm/nouveau/nouveau_bo.c | |
| parent | drm/nouveau/pwr/macros: Stop playing Russian roulette on data memory (diff) | |
| download | kernel-qcow2-linux-fd1496a0fc77f955317d6ca511f66a9e788e7e02.tar.gz kernel-qcow2-linux-fd1496a0fc77f955317d6ca511f66a9e788e7e02.tar.xz kernel-qcow2-linux-fd1496a0fc77f955317d6ca511f66a9e788e7e02.zip | |
drm/nouveau: map pages using DMA API
The DMA API is the recommended way to map pages no matter what the
underlying bus is. Use the DMA functions for page mapping and remove
currently existing wrappers.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_bo.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bo.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index d349078123bd..a405b75a90d9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1340,6 +1340,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) struct nouveau_drm *drm; struct nouveau_device *device; struct drm_device *dev; + struct device *pdev; unsigned i; int r; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); @@ -1358,6 +1359,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) drm = nouveau_bdev(ttm->bdev); device = nv_device(drm->device); dev = drm->dev; + pdev = nv_device_base(device); #if __OS_HAS_AGP if (drm->agp.stat == ENABLED) { @@ -1377,17 +1379,22 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) } for (i = 0; i < ttm->num_pages; i++) { - ttm_dma->dma_address[i] = nv_device_map_page(device, - ttm->pages[i]); - if (!ttm_dma->dma_address[i]) { + dma_addr_t addr; + + addr = dma_map_page(pdev, ttm->pages[i], 0, PAGE_SIZE, + DMA_BIDIRECTIONAL); + + if (dma_mapping_error(pdev, addr)) { while (--i) { - nv_device_unmap_page(device, - ttm_dma->dma_address[i]); + dma_unmap_page(pdev, ttm_dma->dma_address[i], + PAGE_SIZE, DMA_BIDIRECTIONAL); ttm_dma->dma_address[i] = 0; } ttm_pool_unpopulate(ttm); return -EFAULT; } + + ttm_dma->dma_address[i] = addr; } return 0; } @@ -1399,6 +1406,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) struct nouveau_drm *drm; struct nouveau_device *device; struct drm_device *dev; + struct device *pdev; unsigned i; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); @@ -1408,6 +1416,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) drm = nouveau_bdev(ttm->bdev); device = nv_device(drm->device); dev = drm->dev; + pdev = nv_device_base(device); #if __OS_HAS_AGP if (drm->agp.stat == ENABLED) { @@ -1425,7 +1434,8 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) for (i = 0; i < ttm->num_pages; i++) { if (ttm_dma->dma_address[i]) { - nv_device_unmap_page(device, ttm_dma->dma_address[i]); + dma_unmap_page(pdev, ttm_dma->dma_address[i], PAGE_SIZE, + DMA_BIDIRECTIONAL); } } |