From e0435120a8e91990e995ffacb109f82cd44fdfc1 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 11 Jan 2011 15:50:26 +1000 Subject: [PATCH] drm/nv40: support for 39-bit dma addresses on native PCIE chipsets Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_mem.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c index 123969dd4f5..5cf924ed4ac 100644 --- a/drivers/gpu/drm/nouveau/nouveau_mem.c +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c @@ -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; + 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) -- 2.46.0