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drm/nv40: support for 39-bit dma addresses on native PCIE chipsets 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-01-11 15:50:26 +10:00
parent 7948758d27
commit e0435120a8
1 changed files with 11 additions and 5 deletions
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14
drivers/gpu/drm/nouveau/nouveau_mem.c
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@ -393,11 +393,17 @@ nouveau_mem_vram_init(struct drm_device *dev)
struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
int ret, dma_bits;
if (dev_priv->card_type >= NV_50 &&
pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
dma_bits = 40;
else
dma_bits = 32;
if (dev_priv->card_type >= NV_50) {
if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
dma_bits = 40;
} else
if (drm_pci_device_is_pcie(dev) &&
dev_priv->chipset != 0x40 &&
dev_priv->chipset != 0x45) {
if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(39)))
dma_bits = 39;
}
ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
if (ret)