drm: rework radeon memory map (radeon 1.23)

This code reworks the radeon memory map so it works better
for newer r300 chips and for a lot of older PCI chips.

It really requires a new X driver in order to take advantage of this code.

From: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/char/drm/radeon_drv.h b/drivers/char/drm/radeon_drv.h
index 1f7d2ab8c4fc..a0c198895a27 100644
--- a/drivers/char/drm/radeon_drv.h
+++ b/drivers/char/drm/radeon_drv.h
@@ -38,7 +38,7 @@
 
 #define DRIVER_NAME             "radeon"
 #define DRIVER_DESC             "ATI Radeon"
-#define DRIVER_DATE             "20051229"
+#define DRIVER_DATE             "20060225"
 
 /* Interface history:
  *
@@ -91,9 +91,10 @@
  * 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)
+ * 1.23- Add new radeon memory map work from benh
  */
 #define DRIVER_MAJOR            1
-#define DRIVER_MINOR            22
+#define DRIVER_MINOR            23
 #define DRIVER_PATCHLEVEL       0
 
 /*
@@ -138,7 +139,8 @@ enum radeon_chip_flags {
         CHIP_IS_PCIE = 0x00200000UL,
 };
 
-#define GET_RING_HEAD(dev_priv)         DRM_READ32(  (dev_priv)->ring_rptr, 0 )
+#define GET_RING_HEAD(dev_priv) (dev_priv->writeback_works ? \
+        DRM_READ32(  (dev_priv)->ring_rptr, 0 ) : RADEON_READ(RADEON_CP_RB_RPTR))
 #define SET_RING_HEAD(dev_priv,val)     DRM_WRITE32( (dev_priv)->ring_rptr, 0, (val) )
 
 typedef struct drm_radeon_freelist {
@@ -199,6 +201,8 @@ typedef struct drm_radeon_private {
         drm_radeon_sarea_t *sarea_priv;
 
         u32 fb_location;
+        u32 fb_size;
+        int new_memmap;
 
         int gart_size;
         u32 gart_vm_start;