r300g: fixup arb occulsion query support.

1: add rv530 support
   - num z pipes cap
   - add proper start/finish query options for rv530

2: convert to use linked list properly.

3: add flushing required check.

4: initial Z top disabling support.

TODO:
make it actually work on my rv530.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/gallium/winsys/drm/radeon/core/radeon_r300.c b/src/gallium/winsys/drm/radeon/core/radeon_r300.c
index 3587892e003..7ea5d1fb4e7 100644
--- a/src/gallium/winsys/drm/radeon/core/radeon_r300.c
+++ b/src/gallium/winsys/drm/radeon/core/radeon_r300.c
@@ -164,6 +164,16 @@ static void do_ioctls(struct r300_winsys* winsys, int fd)
     }
     winsys->gb_pipes = target;
 
+    /* get Z pipes */
+    info.request = RADEON_INFO_NUM_Z_PIPES;
+    retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
+    if (retval) {
+        fprintf(stderr, "%s: Failed to get GB pipe count, "
+                "error number %d\n", __FUNCTION__, retval);
+        exit(1);
+    }
+    winsys->z_pipes = target;
+
     /* Then, get PCI ID */
     info.request = RADEON_INFO_DEVICE_ID;
     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));