drm/radeon/kms: fix vram start calculation on ontario (v2)

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

drivers/gpu/drm/radeon/evergreen.c

@@ -1134,6 +1134,12 @@ static void evergreen_mc_program(struct radeon_device *rdev)
 			rdev->mc.vram_end >> 12);
 	}
 	WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, 0);
+	if (rdev->flags & RADEON_IS_IGP) {
+		tmp = RREG32(MC_FUS_VM_FB_OFFSET) & 0x000FFFFF;
+		tmp |= ((rdev->mc.vram_end >> 20) & 0xF) << 24;
+		tmp |= ((rdev->mc.vram_start >> 20) & 0xF) << 20;
+		WREG32(MC_FUS_VM_FB_OFFSET, tmp);
+	}
 	tmp = ((rdev->mc.vram_end >> 24) & 0xFFFF) << 16;
 	tmp |= ((rdev->mc.vram_start >> 24) & 0xFFFF);
 	WREG32(MC_VM_FB_LOCATION, tmp);

drivers/gpu/drm/radeon/evergreend.h

@@ -202,6 +202,7 @@
 #define	MC_VM_AGP_BOT					0x202C
 #define	MC_VM_AGP_BASE					0x2030
 #define	MC_VM_FB_LOCATION				0x2024
+#define	MC_FUS_VM_FB_OFFSET				0x2898
 #define	MC_VM_MB_L1_TLB0_CNTL				0x2234
 #define	MC_VM_MB_L1_TLB1_CNTL				0x2238
 #define	MC_VM_MB_L1_TLB2_CNTL				0x223C

drivers/gpu/drm/radeon/rv770.c

@@ -271,12 +271,6 @@ static void rv770_mc_program(struct radeon_device *rdev)
 			rdev->mc.vram_end >> 12);
 	}
 	WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, 0);
-	if (rdev->flags & RADEON_IS_IGP) {
-		tmp = RREG32(MC_FUS_VM_FB_OFFSET) & 0x000FFFFF;
-		tmp |= ((rdev->mc.vram_end >> 20) & 0xF) << 24;
-		tmp |= ((rdev->mc.vram_start >> 20) & 0xF) << 20;
-		WREG32(MC_FUS_VM_FB_OFFSET, tmp);
-	}
 	tmp = ((rdev->mc.vram_end >> 24) & 0xFFFF) << 16;
 	tmp |= ((rdev->mc.vram_start >> 24) & 0xFFFF);
 	WREG32(MC_VM_FB_LOCATION, tmp);
@@ -1074,12 +1068,7 @@ void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 				mc->mc_vram_size >> 20, mc->vram_start,
 				mc->vram_end, mc->real_vram_size >> 20);
 	} else {
-		u64 base = 0;
-		if (rdev->flags & RADEON_IS_IGP) {
-			base = (RREG32(MC_VM_FB_LOCATION) & 0xFFFF) << 24;
-			base |= RREG32(MC_FUS_VM_FB_OFFSET) & 0x00F00000;
-		}
-		radeon_vram_location(rdev, &rdev->mc, base);
+		radeon_vram_location(rdev, &rdev->mc, 0);
 		rdev->mc.gtt_base_align = 0;
 		radeon_gtt_location(rdev, mc);
 	}

drivers/gpu/drm/radeon/rv770d.h

@@ -158,7 +158,6 @@
 #define	MC_VM_AGP_BOT					0x202C
 #define	MC_VM_AGP_BASE					0x2030
 #define	MC_VM_FB_LOCATION				0x2024
-#define	MC_FUS_VM_FB_OFFSET				0x2898
 #define	MC_VM_MB_L1_TLB0_CNTL				0x2234
 #define	MC_VM_MB_L1_TLB1_CNTL				0x2238
 #define	MC_VM_MB_L1_TLB2_CNTL				0x223C