drm/radeon/cik: add pcie_port indirect register accessors

Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/cik.c

@@ -78,6 +78,27 @@ extern void si_rlc_fini(struct radeon_device *rdev);
 extern int si_rlc_init(struct radeon_device *rdev);
 static void cik_rlc_stop(struct radeon_device *rdev);
 
+/*
+ * Indirect registers accessor
+ */
+u32 cik_pciep_rreg(struct radeon_device *rdev, u32 reg)
+{
+	u32 r;
+
+	WREG32(PCIE_INDEX, reg);
+	(void)RREG32(PCIE_INDEX);
+	r = RREG32(PCIE_DATA);
+	return r;
+}
+
+void cik_pciep_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+	WREG32(PCIE_INDEX, reg);
+	(void)RREG32(PCIE_INDEX);
+	WREG32(PCIE_DATA, v);
+	(void)RREG32(PCIE_DATA);
+}
+
 /**
  * cik_get_xclk - get the xclk
  *

drivers/gpu/drm/radeon/cikd.h

@@ -35,6 +35,9 @@
 #define CG_CLKPIN_CNTL                                    0xC05001A0
 #       define XTALIN_DIVIDE                              (1 << 1)
 
+#define PCIE_INDEX  					0x38
+#define PCIE_DATA  					0x3C
+
 #define VGA_HDP_CONTROL  				0x328
 #define		VGA_MEMORY_DISABLE				(1 << 4)
 

drivers/gpu/drm/radeon/radeon_asic.c

@@ -126,7 +126,11 @@ static void radeon_register_accessor_init(struct radeon_device *rdev)
 		rdev->mc_rreg = &rs780_mc_rreg;
 		rdev->mc_wreg = &rs780_mc_wreg;
 	}
-	if (rdev->family >= CHIP_R600) {
+
+	if (rdev->family >= CHIP_BONAIRE) {
+		rdev->pciep_rreg = &cik_pciep_rreg;
+		rdev->pciep_wreg = &cik_pciep_wreg;
+	} else if (rdev->family >= CHIP_R600) {
 		rdev->pciep_rreg = &r600_pciep_rreg;
 		rdev->pciep_wreg = &r600_pciep_wreg;
 	}

drivers/gpu/drm/radeon/radeon_asic.h

@@ -558,5 +558,7 @@ int si_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk);
  */
 uint64_t cik_get_gpu_clock_counter(struct radeon_device *rdev);
 u32 cik_get_xclk(struct radeon_device *rdev);
+uint32_t cik_pciep_rreg(struct radeon_device *rdev, uint32_t reg);
+void cik_pciep_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
 
 #endif