drm/radeon: add indirect accessors for dift registers on CIK

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

diff --git a/drivers/gpu/drm/radeon/cik_reg.h b/drivers/gpu/drm/radeon/cik_reg.h
index d71e46d..ca1bb61 100644 (file)
--- a/drivers/gpu/drm/radeon/cik_reg.h
+++ b/drivers/gpu/drm/radeon/cik_reg.h
@@ -24,6 +24,9 @@
 #ifndef __CIK_REG_H__
 #define __CIK_REG_H__
 
+#define CIK_DIDT_IND_INDEX                        0xca00
+#define CIK_DIDT_IND_DATA                         0xca04
+
 #define CIK_DC_GPIO_HPD_MASK                      0x65b0
 #define CIK_DC_GPIO_HPD_A                         0x65b4
 #define CIK_DC_GPIO_HPD_EN                        0x65b8

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 5941ada..abf5268 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2141,6 +2141,8 @@ void cik_mm_wdoorbell(struct radeon_device *rdev, u32 offset, u32 v);
 #define WREG32_PIF_PHY1(reg, v) eg_pif_phy1_wreg(rdev, (reg), (v))
 #define RREG32_UVD_CTX(reg) r600_uvd_ctx_rreg(rdev, (reg))
 #define WREG32_UVD_CTX(reg, v) r600_uvd_ctx_wreg(rdev, (reg), (v))
+#define RREG32_DIDT(reg) cik_didt_rreg(rdev, (reg))
+#define WREG32_DIDT(reg, v) cik_didt_wreg(rdev, (reg), (v))
 #define WREG32_P(reg, val, mask)                               \
        do {                                                    \
                uint32_t tmp_ = RREG32(reg);                    \
@@ -2272,6 +2274,22 @@ static inline void r600_uvd_ctx_wreg(struct radeon_device *rdev, u32 reg, u32 v)
        WREG32(R600_UVD_CTX_DATA, (v));
 }
 
+
+static inline u32 cik_didt_rreg(struct radeon_device *rdev, u32 reg)
+{
+       u32 r;
+
+       WREG32(CIK_DIDT_IND_INDEX, (reg));
+       r = RREG32(CIK_DIDT_IND_DATA);
+       return r;
+}
+
+static inline void cik_didt_wreg(struct radeon_device *rdev, u32 reg, u32 v)
+{
+       WREG32(CIK_DIDT_IND_INDEX, (reg));
+       WREG32(CIK_DIDT_IND_DATA, (v));
+}
+
 void r100_pll_errata_after_index(struct radeon_device *rdev);