nvc0: reduce likelihood of collision for real buffers on Fermi

Reduce likelihood of collision with real buffers by placing the
hole at the top of the 4G area. This fixes some indirect draw+compute
tests with large buffers.

Suggested by Ilia Mirkin.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_compute.c b/src/gallium/drivers/nouveau/nvc0/nvc0_compute.c
index 884b15f875dd610f0fb4cb7acaf76bb1570e5252..c07f186af5ceefb697a02340287863a9ffc6088f 100644 (file)
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_compute.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_compute.c
@@ -90,13 +90,13 @@ nvc0_screen_compute_setup(struct nvc0_screen *screen,
    BEGIN_NVC0(push, NVC0_COMPUTE(WARP_TEMP_ALLOC), 1);
    PUSH_DATA (push, 0);
    BEGIN_NVC0(push, NVC0_COMPUTE(LOCAL_BASE), 1);
-   PUSH_DATA (push, 1 << 24);
+   PUSH_DATA (push, 0xff << 24);
 
    /* shared memory setup */
    BEGIN_NVC0(push, NVC0_COMPUTE(CACHE_SPLIT), 1);
    PUSH_DATA (push, NVC0_COMPUTE_CACHE_SPLIT_48K_SHARED_16K_L1);
    BEGIN_NVC0(push, NVC0_COMPUTE(SHARED_BASE), 1);
-   PUSH_DATA (push, 2 << 24);
+   PUSH_DATA (push, 0xfe << 24);
    BEGIN_NVC0(push, NVC0_COMPUTE(SHARED_SIZE), 1);
    PUSH_DATA (push, 0);