diff options
| author | Dave Airlie <airlied@linux.ie> | 2006-03-19 10:56:12 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2006-03-19 10:56:12 +0300 |
| commit | ddf19b973be5a96d77c8467f657fe5bd7d126e0f (patch) | |
| tree | e7b003b3dad82014b364acde5681956011e67b58 /drivers/char/drm/drm_pci.c | |
| parent | 60a6dc55b93b3321afa52f650a149fb7e87fa85a (diff) | |
| download | linux-ddf19b973be5a96d77c8467f657fe5bd7d126e0f.tar.xz | |
drm: fixup PCI DMA support
This patch makes the PCI support use the correct Linux interfaces finally.
Tested in DRM CVS on PCI MGA card.
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm/drm_pci.c')
| -rw-r--r-- | drivers/char/drm/drm_pci.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/char/drm/drm_pci.c b/drivers/char/drm/drm_pci.c index 1fd7ff164817..b28ca9cea8a2 100644 --- a/drivers/char/drm/drm_pci.c +++ b/drivers/char/drm/drm_pci.c @@ -50,6 +50,10 @@ drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size, size_t align, dma_addr_t maxaddr) { drm_dma_handle_t *dmah; +#if 1 + unsigned long addr; + size_t sz; +#endif #ifdef DRM_DEBUG_MEMORY int area = DRM_MEM_DMA; @@ -79,7 +83,7 @@ drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size, size_t align, return NULL; dmah->size = size; - dmah->vaddr = pci_alloc_consistent(dev->pdev, size, &dmah->busaddr); + dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, &dmah->busaddr, GFP_KERNEL | __GFP_COMP); #ifdef DRM_DEBUG_MEMORY if (dmah->vaddr == NULL) { @@ -104,18 +108,29 @@ drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size, size_t align, memset(dmah->vaddr, 0, size); + /* XXX - Is virt_to_page() legal for consistent mem? */ + /* Reserve */ + for (addr = (unsigned long)dmah->vaddr, sz = size; + sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { + SetPageReserved(virt_to_page(addr)); + } + return dmah; } EXPORT_SYMBOL(drm_pci_alloc); /** - * \brief Free a PCI consistent memory block with freeing its descriptor. + * \brief Free a PCI consistent memory block without freeing its descriptor. * * This function is for internal use in the Linux-specific DRM core code. */ void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah) { +#if 1 + unsigned long addr; + size_t sz; +#endif #ifdef DRM_DEBUG_MEMORY int area = DRM_MEM_DMA; int alloc_count; @@ -127,8 +142,14 @@ void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah) DRM_MEM_ERROR(area, "Attempt to free address 0\n"); #endif } else { - pci_free_consistent(dev->pdev, dmah->size, dmah->vaddr, - dmah->busaddr); + /* XXX - Is virt_to_page() legal for consistent mem? */ + /* Unreserve */ + for (addr = (unsigned long)dmah->vaddr, sz = dmah->size; + sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { + ClearPageReserved(virt_to_page(addr)); + } + dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr, + dmah->busaddr); } #ifdef DRM_DEBUG_MEMORY |