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-rw-r--r--linux/r128_state.c69
1 files changed, 67 insertions, 2 deletions
diff --git a/linux/r128_state.c b/linux/r128_state.c
index 66af5c45..9de1b6b9 100644
--- a/linux/r128_state.c
+++ b/linux/r128_state.c
@@ -1519,10 +1519,75 @@ int r128_cce_indirect( struct inode *inode, struct file *filp,
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->dev;
+ drm_r128_private_t *dev_priv = dev->dev_private;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf;
+ drm_r128_buf_priv_t *buf_priv;
+ drm_r128_indirect_t indirect;
+#if 0
+ RING_LOCALS;
+#endif
LOCK_TEST_WITH_RETURN( dev );
- /* Indirect buffer firing is not supported at this time.
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
+ return -EINVAL;
+ }
+
+ if ( copy_from_user( &indirect, (drm_r128_indirect_t *)arg,
+ sizeof(indirect) ) )
+ return -EFAULT;
+
+ DRM_DEBUG( "indirect: idx=%d s=%d e=%d d=%d\n",
+ indirect.idx, indirect.start,
+ indirect.end, indirect.discard );
+
+ if ( indirect.idx < 0 || indirect.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ indirect.idx, dma->buf_count - 1 );
+ return -EINVAL;
+ }
+
+ buf = dma->buflist[indirect.idx];
+ buf_priv = buf->dev_private;
+
+ if ( buf->pid != current->pid ) {
+ DRM_ERROR( "process %d using buffer owned by %d\n",
+ current->pid, buf->pid );
+ return -EINVAL;
+ }
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", indirect.idx );
+ return -EINVAL;
+ }
+
+ if ( indirect.start < buf->used ) {
+ DRM_ERROR( "reusing indirect: start=0x%x actual=0x%x\n",
+ indirect.start, buf->used );
+ return -EINVAL;
+ }
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ buf->used = indirect.end;
+ buf_priv->discard = indirect.discard;
+
+#if 0
+ /* Wait for the 3D stream to idle before the indirect buffer
+ * containing 2D acceleration commands is processed.
*/
- return -EINVAL;
+ BEGIN_RING( 2 );
+ RADEON_WAIT_UNTIL_3D_IDLE();
+ ADVANCE_RING();
+#endif
+
+ /* Dispatch the indirect buffer full of commands from the
+ * X server. This is insecure and is thus only available to
+ * privileged clients.
+ */
+ r128_cce_dispatch_indirect( dev, buf, indirect.start, indirect.end );
+
+ return 0;
}