[PATCH 045/165] drm/radeon/cik: add pcie_port indirect register accessors

[alexdeuc...@gmail.com]

From: Alex Deucher <alexander.deuc...@amd.com>

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/cik.c         |   21 +++++++++++++++++++++
 drivers/gpu/drm/radeon/cikd.h        |    3 +++
 drivers/gpu/drm/radeon/radeon_asic.c |    6 +++++-
 drivers/gpu/drm/radeon/radeon_asic.h |    2 ++
 4 files changed, 31 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 0db0ebc..e8ea845 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 f00e273..d23809a 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 a2802b47..717b537 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 05f75f7..8c19e36 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
-- 
1.7.7.5