diff options
| author | Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> | 2008-09-10 16:13:33 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-10-16 10:37:18 +0400 |
| commit | a64d2b37c2259e169759c1701ac565f0a11dc0ea (patch) | |
| tree | 02d86a00f6a4617722c5d7f55da81056e5ca3bce | |
| parent | 2a32c3c894bcd3b3f8cc7e23f5ecbebca4a9f8e8 (diff) | |
| download | linux-a64d2b37c2259e169759c1701ac565f0a11dc0ea.tar.xz | |
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.c | 22 |
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); |