WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] [PATCH 7/9] nouveau/radeon: Set coherent DMA mask

All the storage devices that use the dmapool set the coherent DMA
mask so they can properly use the dmapool. Since the TTM DMA pool
code is based on that and dma_alloc_coherent checks the
'coherent_dma_mask' and not 'dma_mask' we want to set it.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 drivers/gpu/drm/nouveau/nouveau_mem.c  |    5 +++++
 drivers/gpu/drm/radeon/radeon_device.c |    6 ++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c 
b/drivers/gpu/drm/nouveau/nouveau_mem.c
index a2d7e35..bb6ccbd 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -408,6 +408,11 @@ nouveau_mem_vram_init(struct drm_device *dev)
        if (ret)
                return ret;
 
+       ret = pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
+       if (ret) {
+               /* Reset to default value. */
+               pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(32));
+       }
        dev_priv->fb_phys = pci_resource_start(dev->pdev, 1);
 
        ret = nouveau_ttm_global_init(dev_priv);
diff --git a/drivers/gpu/drm/radeon/radeon_device.c 
b/drivers/gpu/drm/radeon/radeon_device.c
index 7cfaa7e..0c0a970 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -757,8 +757,14 @@ int radeon_device_init(struct radeon_device *rdev,
        r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
        if (r) {
                rdev->need_dma32 = true;
+               dma_bits = 32;
                printk(KERN_WARNING "radeon: No suitable DMA available.\n");
        }
+       r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
+       if (r) {
+               pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
+               printk(KERN_WARNING "radeon: No coherent DMA available.\n");
+       }
 
        /* Registers mapping */
        /* TODO: block userspace mapping of io register */
-- 
1.7.4.1


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel