diff options
| author | Keir Fraser <Keir.Fraser@cl.cam.ac.uk> | 2005-03-30 13:17:04 -0800 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2005-06-07 12:35:43 -0700 |
| commit | 07eee78ea8ba2d0b7b20551c35a3e7dd158d50bb (patch) | |
| tree | a11d2e705253faaa9779cfd83bb8ca9de311b195 /drivers/char/agp/ali-agp.c | |
| parent | e29b545cb153f230fbd8ff4c19bc98ab950f9f5c (diff) | |
[PATCH] AGP fix for Xen VMM
When Linux is running on the Xen virtual machine monitor, physical
addresses are virtualised and cannot be directly referenced by the AGP
GART. This patch fixes the GART driver for Xen by adding a layer of
abstraction between physical addresses and 'GART addresses'.
Architecture-specific functions are also defined for allocating and freeing
the GATT. Xen requires this to ensure that table really is contiguous from
the point of view of the GART.
These extra interface functions are defined as 'no-ops' for all existing
architectures that use the GART driver.
Signed-off-by: Keir Fraser <keir@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'drivers/char/agp/ali-agp.c')
| -rw-r--r-- | drivers/char/agp/ali-agp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/agp/ali-agp.c b/drivers/char/agp/ali-agp.c index 0212febda65..9c9c9c2247c 100644 --- a/drivers/char/agp/ali-agp.c +++ b/drivers/char/agp/ali-agp.c @@ -150,7 +150,7 @@ static void *m1541_alloc_page(struct agp_bridge_data *bridge) pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | - virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN )); + virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN )); return addr; } @@ -174,7 +174,7 @@ static void m1541_destroy_page(void * addr) pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | - virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN)); + virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN)); agp_generic_destroy_page(addr); } |