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drm/drivers: add support for using the arch wc mapping API.

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This fixes a regression in all these drivers since the cache
mode tracking was fixed for mixed mappings. It uses the new
arch API to add the VRAM range to the PAT mapping tracking
tables.

Fixes: 87744ab383 (mm: fix cache mode tracking in vm_insert_mixed())
Reviewed-by: Christian König <christian.koenig@amd.com>.
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2016-10-24 15:37:48 +10:00
parent 8ef4227615
commit 7cf321d118
6 changed files with 38 additions and 0 deletions
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7
drivers/gpu/drm/cirrus/cirrus_ttm.c
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@@ -267,6 +267,9 @@ int cirrus_mm_init(struct cirrus_device *cirrus)
return ret;
}
arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
pci_resource_len(dev->pdev, 0));
cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
pci_resource_len(dev->pdev, 0));
@@ -276,6 +279,8 @@ int cirrus_mm_init(struct cirrus_device *cirrus)
void cirrus_mm_fini(struct cirrus_device *cirrus)
{
struct drm_device *dev = cirrus->dev;
if (!cirrus->mm_inited)
return;
@@ -285,6 +290,8 @@ void cirrus_mm_fini(struct cirrus_device *cirrus)
arch_phys_wc_del(cirrus->fb_mtrr);
cirrus->fb_mtrr = 0;
arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
pci_resource_len(dev->pdev, 0));
}
void cirrus_ttm_placement(struct cirrus_bo *bo, int domain)