summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorThomas Hellstrom <thomas-at-tungstengraphics-dot-com>2008-09-10 14:13:33 +0200
committerDave Airlie <airlied@redhat.com>2008-10-16 16:37:18 +1000
commita64d2b37c2259e169759c1701ac565f0a11dc0ea (patch)
tree02d86a00f6a4617722c5d7f55da81056e5ca3bce
parent2a32c3c894bcd3b3f8cc7e23f5ecbebca4a9f8e8 (diff)
downloadlinux-sh-a64d2b37c2259e169759c1701ac565f0a11dc0ea.tar.gz
agp/nvidia: Support agp user-memory on nvidia agp.
This adds user memory support required for TTM to the nvidia AGP driver. Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/char/agp/nvidia-agp.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c
index eaceb61ba2dc..0cc1c5baced5 100644
--- a/drivers/char/agp/nvidia-agp.c
+++ b/drivers/char/agp/nvidia-agp.c
@@ -201,10 +201,15 @@ extern int agp_memory_reserved;
static int nvidia_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
{
int i, j;
+ int mask_type;
- if ((type != 0) || (mem->type != 0))
+ mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
+ if (mask_type != 0 || type != mem->type)
return -EINVAL;
+ if (mem->page_count == 0)
+ return 0;
+
if ((pg_start + mem->page_count) >
(nvidia_private.num_active_entries - agp_memory_reserved/PAGE_SIZE))
return -EINVAL;
@@ -220,10 +225,13 @@ static int nvidia_insert_memory(struct agp_memory *mem, off_t pg_start, int type
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
- mem->memory[i], mem->type),
+ mem->memory[i], mask_type),
agp_bridge->gatt_table+nvidia_private.pg_offset+j);
- readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j); /* PCI Posting. */
}
+
+ /* PCI Posting. */
+ readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j - 1);
+
agp_bridge->driver->tlb_flush(mem);
return 0;
}
@@ -233,9 +241,15 @@ static int nvidia_remove_memory(struct agp_memory *mem, off_t pg_start, int type
{
int i;
- if ((type != 0) || (mem->type != 0))
+ int mask_type;
+
+ mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
+ if (mask_type != 0 || type != mem->type)
return -EINVAL;
+ if (mem->page_count == 0)
+ return 0;
+
for (i = pg_start; i < (mem->page_count + pg_start); i++)
writel(agp_bridge->scratch_page, agp_bridge->gatt_table+nvidia_private.pg_offset+i);