[Mesa-dev] [PATCH 1/3] nvc0: fix up TCP header on GM107+

[Samuel Pitoiset]

The number of outputs patch (limited to 255) has moved in the TCP
header, but blob seems to also set the old position. Also, the high
8-bits are now located inbetween the min/max parallel output read
address at position 20.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
 src/gallium/drivers/nouveau/nvc0/nvc0_program.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
index 5fc2753..8ed3e10 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
@@ -346,6 +346,15 @@ nvc0_tcp_gen_header(struct nvc0_program *tcp, struct nv50_ir_prog_info *info)
 
    nvc0_vtgp_gen_header(tcp, info);
 
+   if (info->target >= NVISA_GM107_CHIPSET) {
+      /* On GM107+, the number of output patch components has moved in the TCP
+       * header, but it seems like blob still also uses the old position.
+       * Also, the high 8-bits are located inbetween the min/max parallel
+       * field and has to be set after updating the outputs. */
+      tcp->hdr[3] = opcs << 28;
+      tcp->hdr[4] |= (opcs & 0xf0) << 16;
+   }
+
    nvc0_tp_get_tess_mode(tcp, info);
 
    return 0;
-- 
2.9.0