drm: radeon add r300 TX_CNTL and verify bitblt packets

The Xgl on r300 doesn't work unless you add a verify bitblt function to the
DRM, and we need to pass TX_CNTL to flush texture caches.

Signed-off-by: Dave Airlie <airlied@linux.ie>

3 files changed, 55 insertions, 1 deletions

diff --git a/drivers/char/drm/r300_cmdbuf.c b/drivers/char/drm/r300_cmdbuf.c
index 291dbf4c8186..6dd21754ba67 100644
--- a/drivers/char/drm/r300_cmdbuf.c
+++ b/drivers/char/drm/r300_cmdbuf.c
@@ -161,6 +161,7 @@ void r300_init_reg_flags(void)
         ADD_RANGE(R300_VAP_PVS_CNTL_1, 3);
         ADD_RANGE(R300_GB_ENABLE, 1);
         ADD_RANGE(R300_GB_MSPOS0, 5);
+        ADD_RANGE(R300_TX_CNTL, 1);
         ADD_RANGE(R300_TX_ENABLE, 1);
         ADD_RANGE(0x4200, 4);
         ADD_RANGE(0x4214, 1);
@@ -489,6 +490,52 @@ static __inline__ int r300_emit_3d_load_vbpntr(drm_radeon_private_t *dev_priv,
 
         return 0;
 }
+static __inline__ int r300_emit_bitblt_multi(drm_radeon_private_t *dev_priv,
+                                             drm_radeon_kcmd_buffer_t *cmdbuf)
+{
+        u32 *cmd = (u32 *) cmdbuf->buf;
+        int count, ret;
+        RING_LOCALS;
+
+        count=(cmd[0]>>16) & 0x3fff;
+
+        if (cmd[0] & 0x8000) {
+                u32 offset;
+
+                if (cmd[1] & (RADEON_GMC_SRC_PITCH_OFFSET_CNTL 
+                              | RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
+                        offset = cmd[2] << 10;
+                        ret = r300_check_offset(dev_priv, offset);
+                        if (ret)
+                        {
+                                DRM_ERROR("Invalid bitblt first offset is %08X\n", offset);
+                                return DRM_ERR(EINVAL);
+                        }
+                }
+
+                if ((cmd[1] & RADEON_GMC_SRC_PITCH_OFFSET_CNTL) &&
+                    (cmd[1] & RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
+                        offset = cmd[3] << 10;
+                        ret = r300_check_offset(dev_priv, offset);
+                        if (ret)
+                        {
+                                DRM_ERROR("Invalid bitblt second offset is %08X\n", offset);
+                                return DRM_ERR(EINVAL);
+                        }
+                        
+                }
+        }
+
+        BEGIN_RING(count+2);
+        OUT_RING(cmd[0]);
+        OUT_RING_TABLE((int *)(cmdbuf->buf + 4), count + 1);
+        ADVANCE_RING();
+
+        cmdbuf->buf += (count+2)*4;
+        cmdbuf->bufsz -= (count+2)*4;
+
+        return 0;
+}
 
 static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
                                             drm_radeon_kcmd_buffer_t *cmdbuf)
@@ -527,6 +574,9 @@ static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
         case RADEON_3D_LOAD_VBPNTR:     /* load vertex array pointers */
                 return r300_emit_3d_load_vbpntr(dev_priv, cmdbuf, header);
 
+        case RADEON_CNTL_BITBLT_MULTI:
+                return r300_emit_bitblt_multi(dev_priv, cmdbuf);
+
         case RADEON_CP_3D_DRAW_IMMD_2:  /* triggers drawing using in-packet vertex data */
         case RADEON_CP_3D_DRAW_VBUF_2:  /* triggers drawing of vertex buffers setup elsewhere */
         case RADEON_CP_3D_DRAW_INDX_2:  /* triggers drawing using indices to vertex buffer */
diff --git a/drivers/char/drm/r300_reg.h b/drivers/char/drm/r300_reg.h
index a0ed20e25221..d1e19954406b 100644
--- a/drivers/char/drm/r300_reg.h
+++ b/drivers/char/drm/r300_reg.h
@@ -451,6 +451,9 @@ I am fairly certain that they are correct unless stated otherwise in comments.
 /* END */
 
 /* gap */
+/* Zero to flush caches. */
+#define R300_TX_CNTL                        0x4100
+
 /* The upper enable bits are guessed, based on fglrx reported limits. */
 #define R300_TX_ENABLE                      0x4104
 #       define R300_TX_ENABLE_0                  (1 << 0)
diff --git a/drivers/char/drm/radeon_drv.h b/drivers/char/drm/radeon_drv.h
index 498b19b1d641..1f7d2ab8c4fc 100644
--- a/drivers/char/drm/radeon_drv.h
+++ b/drivers/char/drm/radeon_drv.h
@@ -90,9 +90,10 @@
  * 1.19- Add support for gart table in FB memory and PCIE r300
  * 1.20- Add support for r300 texrect
  * 1.21- Add support for card type getparam
+ * 1.22- Add support for texture cache flushes (R300_TX_CNTL)
  */
 #define DRIVER_MAJOR            1
-#define DRIVER_MINOR            21
+#define DRIVER_MINOR            22
 #define DRIVER_PATCHLEVEL       0
 
 /*