drm/radeon/cik: add pcie_port indirect register accessors

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

4 files changed, 31 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 445f497c7fc9..4c8407df175b 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/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
  *
diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h
index f00e273134a8..d23809a557a6 100644
--- a/drivers/gpu/drm/radeon/cikd.h
+++ b/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)
 
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index a2802b47ee95..717b5373d2b0 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/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;
         }
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 05f75f753468..8c19e3646256 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/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