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authorKeir Fraser <Keir.Fraser@cl.cam.ac.uk>2005-03-30 16:17:04 -0500
committerDave Jones <davej@redhat.com>2005-06-07 15:35:43 -0400
commit07eee78ea8ba2d0b7b20551c35a3e7dd158d50bb (patch)
treea11d2e705253faaa9779cfd83bb8ca9de311b195 /drivers/char/agp/efficeon-agp.c
parente29b545cb153f230fbd8ff4c19bc98ab950f9f5c (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/efficeon-agp.c')
-rw-r--r--drivers/char/agp/efficeon-agp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index 1383c3165ea1..ac19fdcd21c1 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -219,7 +219,7 @@ static int efficeon_create_gatt_table(struct agp_bridge_data *bridge)
219 219
220 efficeon_private.l1_table[index] = page; 220 efficeon_private.l1_table[index] = page;
221 221
222 value = __pa(page) | pati | present | index; 222 value = virt_to_gart(page) | pati | present | index;
223 223
224 pci_write_config_dword(agp_bridge->dev, 224 pci_write_config_dword(agp_bridge->dev,
225 EFFICEON_ATTPAGE, value); 225 EFFICEON_ATTPAGE, value);