drm/radeon: add basic zmask/hiz support (v4)

This interface allows userspace to request hyperz support, it probably
needs more locking, and really reporting that you can have hyperz is racy
since someone else might get it before you do.

v2: modify so we pass 0 valued packets to let DDX/r300c keep working.
also fixed incorrect 0x4f1c reference.

v3: fixup zb_bw_cntl so older drivers keep working

v4: add locking, fixup SC_HYPERZ_EN - patch stream to disable hiz

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r300d.h b/drivers/gpu/drm/radeon/r300d.h
index 968a33317fb..0c036c60d9d 100644
--- a/drivers/gpu/drm/radeon/r300d.h
+++ b/drivers/gpu/drm/radeon/r300d.h
@@ -48,10 +48,12 @@
 #define         PACKET3_3D_DRAW_IMMD            0x29
 #define         PACKET3_3D_DRAW_INDX            0x2A
 #define         PACKET3_3D_LOAD_VBPNTR          0x2F
+#define         PACKET3_3D_CLEAR_ZMASK          0x32
 #define         PACKET3_INDX_BUFFER             0x33
 #define         PACKET3_3D_DRAW_VBUF_2          0x34
 #define         PACKET3_3D_DRAW_IMMD_2          0x35
 #define         PACKET3_3D_DRAW_INDX_2          0x36
+#define         PACKET3_3D_CLEAR_HIZ            0x37
 #define         PACKET3_BITBLT_MULTI            0x9B
 
 #define PACKET0(reg, n) (CP_PACKET0 |                                   \