drm/radeon/kms: fix vram setup on rs600/rs690/rs740

Don't remap vram to 0 on IGP chips.

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

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 30913c3b5ba1..eb486ee7ea00 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -162,6 +162,21 @@ void rs690_vram_info(struct radeon_device *rdev)
         rdev->pm.core_bandwidth.full = rfixed_div(rdev->pm.sclk, a);
 }
 
+static int rs690_mc_init(struct radeon_device *rdev)
+{
+        int r;
+        u32 tmp;
+
+        /* Setup GPU memory space */
+        tmp = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
+        rdev->mc.vram_location = G_000100_MC_FB_START(tmp) << 16;
+        rdev->mc.gtt_location = 0xFFFFFFFFUL;
+        r = radeon_mc_setup(rdev);
+        if (r)
+                return r;
+        return 0;
+}
+
 void rs690_line_buffer_adjust(struct radeon_device *rdev,
                               struct drm_display_mode *mode1,
                               struct drm_display_mode *mode2)
@@ -710,7 +725,7 @@ int rs690_init(struct radeon_device *rdev)
         /* Get vram informations */
         rs690_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
-        r = r420_mc_init(rdev);
+        r = rs690_mc_init(rdev);
         if (r)
                 return r;
         rv515_debugfs(rdev);