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/uninorth-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/uninorth-agp.c')
| -rw-r--r-- | drivers/char/agp/uninorth-agp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index a673971f2a90..c8255312b8c1 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -407,7 +407,7 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge) bridge->gatt_table_real = (u32 *) table; bridge->gatt_table = (u32 *)table; - bridge->gatt_bus_addr = virt_to_phys(table); + bridge->gatt_bus_addr = virt_to_gart(table); for (i = 0; i < num_entries; i++) bridge->gatt_table[i] = 0; |