[Mesa-dev] [PATCH] nvc0: disable linked tsc mode in compute launch descriptor

[Ilia Mirkin]

Empirically, this makes things work. Presumably this was originally
copied from the blob, which does make use of linked tsc mode.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99532
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: mesa-stable at lists.freedesktop.org
---
 src/gallium/drivers/nouveau/nvc0/nve4_compute.c | 1 +
 src/gallium/drivers/nouveau/nvc0/nve4_compute.h | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
index f927aa0..db32c9b 100644
--- a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
+++ b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
@@ -827,6 +827,7 @@ nve4_compute_dump_launch_desc(const struct nve4_cp_launch_desc *desc)
    debug_printf("barrier count: %u\n", desc->bar_alloc);
    debug_printf("$r count: %u\n", desc->gpr_alloc);
    debug_printf("cache split: %s\n", nve4_cache_split_name(desc->cache_split));
+   debug_printf("linked tsc: %d\n", desc->linked_tsc);
 
    for (i = 0; i < 8; ++i) {
       uint64_t address;
diff --git a/src/gallium/drivers/nouveau/nvc0/nve4_compute.h b/src/gallium/drivers/nouveau/nvc0/nve4_compute.h
index b98c65d..5fe58b9 100644
--- a/src/gallium/drivers/nouveau/nvc0/nve4_compute.h
+++ b/src/gallium/drivers/nouveau/nvc0/nve4_compute.h
@@ -8,7 +8,10 @@ struct nve4_cp_launch_desc
 {
    u32 unk0[8];
    u32 entry;
-   u32 unk9[3];
+   u32 unk9[2];
+   u32 unk11_0      : 30;
+   u32 linked_tsc   : 1;
+   u32 unk11_31     : 1;
    u32 griddim_x    : 31;
    u32 unk12        : 1;
    u16 griddim_y;
@@ -48,7 +51,7 @@ nve4_cp_launch_desc_init_default(struct nve4_cp_launch_desc *desc)
    memset(desc, 0, sizeof(*desc));
 
    desc->unk0[7]  = 0xbc000000;
-   desc->unk9[2]  = 0x44014000;
+   desc->unk11_0  = 0x04014000;
    desc->unk47_20 = 0x300;
 }
 
-- 
2.10.2