drm/radeon: prep for r6xx/r7xx support

- add r6xx/r7xx regs and macros
- add r6xx/r7xx chip families
- fix register access for regs with offsets >= 0x10000

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index 8338353e505..e42b6a2a7e8 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -89,6 +89,20 @@ u32 radeon_get_scratch(drm_radeon_private_t *dev_priv, int index)
                 return RADEON_READ(RADEON_SCRATCH_REG0 + 4*index);
 }
 
+u32 RADEON_READ_MM(drm_radeon_private_t *dev_priv, int addr)
+{
+        u32 ret;
+
+        if (addr < 0x10000)
+                ret = DRM_READ32(dev_priv->mmio, addr);
+        else {
+                DRM_WRITE32(dev_priv->mmio, RADEON_MM_INDEX, addr);
+                ret = DRM_READ32(dev_priv->mmio, RADEON_MM_DATA);
+        }
+
+        return ret;
+}
+
 static u32 R500_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
 {
         u32 ret;