drm/radeon/kms: add support for cayman irqs

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

drivers/gpu/drm/radeon/r600.c

@@ -47,6 +47,7 @@
 #define EVERGREEN_PFP_UCODE_SIZE 1120
 #define EVERGREEN_PM4_UCODE_SIZE 1376
 #define EVERGREEN_RLC_UCODE_SIZE 768
+#define CAYMAN_RLC_UCODE_SIZE 1024
 
 /* Firmware Names */
 MODULE_FIRMWARE("radeon/R600_pfp.bin");
@@ -2809,13 +2810,20 @@ static int r600_rlc_init(struct radeon_device *rdev)
 	WREG32(RLC_HB_CNTL, 0);
 	WREG32(RLC_HB_RPTR, 0);
 	WREG32(RLC_HB_WPTR, 0);
-	WREG32(RLC_HB_WPTR_LSB_ADDR, 0);
-	WREG32(RLC_HB_WPTR_MSB_ADDR, 0);
+	if (rdev->family <= CHIP_CAICOS) {
+		WREG32(RLC_HB_WPTR_LSB_ADDR, 0);
+		WREG32(RLC_HB_WPTR_MSB_ADDR, 0);
+	}
 	WREG32(RLC_MC_CNTL, 0);
 	WREG32(RLC_UCODE_CNTL, 0);
 
 	fw_data = (const __be32 *)rdev->rlc_fw->data;
-	if (rdev->family >= CHIP_CEDAR) {
+	if (rdev->family >= CHIP_CAYMAN) {
+		for (i = 0; i < CAYMAN_RLC_UCODE_SIZE; i++) {
+			WREG32(RLC_UCODE_ADDR, i);
+			WREG32(RLC_UCODE_DATA, be32_to_cpup(fw_data++));
+		}
+	} else if (rdev->family >= CHIP_CEDAR) {
 		for (i = 0; i < EVERGREEN_RLC_UCODE_SIZE; i++) {
 			WREG32(RLC_UCODE_ADDR, i);
 			WREG32(RLC_UCODE_DATA, be32_to_cpup(fw_data++));