drm/radeon/kms: fix up gart setup on rs600

Set up rs600 gart like r600:
- set gart system aperture to vram
- inside gart system aperture is unmapped*
- outside gart system aperture is mapped*

*mapped refers to memory handled by page tables
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/rs600.c

@@ -102,38 +102,38 @@ int rs600_gart_enable(struct radeon_device *rdev)
 	WREG32_MC(R_000100_MC_PT0_CNTL,
 		  (S_000100_EFFECTIVE_L2_CACHE_SIZE(6) |
 		   S_000100_EFFECTIVE_L2_QUEUE_SIZE(6)));
+
 	for (i = 0; i < 19; i++) {
 		WREG32_MC(R_00016C_MC_PT0_CLIENT0_CNTL + i,
 			  S_00016C_ENABLE_TRANSLATION_MODE_OVERRIDE(1) |
 			  S_00016C_SYSTEM_ACCESS_MODE_MASK(
-				V_00016C_SYSTEM_ACCESS_MODE_IN_SYS) |
+				  V_00016C_SYSTEM_ACCESS_MODE_NOT_IN_SYS) |
 			  S_00016C_SYSTEM_APERTURE_UNMAPPED_ACCESS(
-				V_00016C_SYSTEM_APERTURE_UNMAPPED_DEFAULT_PAGE) |
-			S_00016C_EFFECTIVE_L1_CACHE_SIZE(1) |
+				  V_00016C_SYSTEM_APERTURE_UNMAPPED_PASSTHROUGH) |
+			  S_00016C_EFFECTIVE_L1_CACHE_SIZE(3) |
 			  S_00016C_ENABLE_FRAGMENT_PROCESSING(1) |
-			S_00016C_EFFECTIVE_L1_QUEUE_SIZE(1));
+			  S_00016C_EFFECTIVE_L1_QUEUE_SIZE(3));
 	}
-
-	/* System context map to GART space */
-	WREG32_MC(R_000112_MC_PT0_SYSTEM_APERTURE_LOW_ADDR, rdev->mc.gtt_start);
-	WREG32_MC(R_000114_MC_PT0_SYSTEM_APERTURE_HIGH_ADDR, rdev->mc.gtt_end);
-
 	/* enable first context */
-	WREG32_MC(R_00013C_MC_PT0_CONTEXT0_FLAT_START_ADDR, rdev->mc.gtt_start);
-	WREG32_MC(R_00014C_MC_PT0_CONTEXT0_FLAT_END_ADDR, rdev->mc.gtt_end);
 	WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL,
 		  S_000102_ENABLE_PAGE_TABLE(1) |
 		  S_000102_PAGE_TABLE_DEPTH(V_000102_PAGE_TABLE_FLAT));
+
 	/* disable all other contexts */
-	for (i = 1; i < 8; i++) {
+	for (i = 1; i < 8; i++)
 		WREG32_MC(R_000102_MC_PT0_CONTEXT0_CNTL + i, 0);
-	}
 
 	/* setup the page table */
 	WREG32_MC(R_00012C_MC_PT0_CONTEXT0_FLAT_BASE_ADDR,
 		  rdev->gart.table_addr);
+	WREG32_MC(R_00013C_MC_PT0_CONTEXT0_FLAT_START_ADDR, rdev->mc.gtt_start);
+	WREG32_MC(R_00014C_MC_PT0_CONTEXT0_FLAT_END_ADDR, rdev->mc.gtt_end);
 	WREG32_MC(R_00011C_MC_PT0_CONTEXT0_DEFAULT_READ_ADDR, 0);
 
+	/* System context maps to VRAM space */
+	WREG32_MC(R_000112_MC_PT0_SYSTEM_APERTURE_LOW_ADDR, rdev->mc.vram_start);
+	WREG32_MC(R_000114_MC_PT0_SYSTEM_APERTURE_HIGH_ADDR, rdev->mc.vram_end);
+
 	/* enable page tables */
 	tmp = RREG32_MC(R_000100_MC_PT0_CNTL);
 	WREG32_MC(R_000100_MC_PT0_CNTL, (tmp | S_000100_ENABLE_PT(1)));