[PATCH 28/28] drm/amdgpu/: add more macro to support offset variant

[Alex Deucher]

From: James Zhu <James.Zhu at amd.com>

Add more macro to support offset variant and
simplify macro SOC15_WAIT_ON_RREG.

Signed-off-by: James Zhu <James.Zhu at amd.com>
Reviewed-by: Leo Liu <leo.liu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  3 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 28 +++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/soc15_common.h  | 36 +++++++---------------
 3 files changed, 42 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index bdc1190601d4..786b28821324 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1103,6 +1103,9 @@ size_t amdgpu_device_aper_access(struct amdgpu_device *adev, loff_t pos,
 
 void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos,
 			       void *buf, size_t size, bool write);
+uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev,
+			    uint32_t inst, uint32_t reg_addr, char reg_name[],
+			    uint32_t expected_value, uint32_t mask);
 uint32_t amdgpu_device_rreg(struct amdgpu_device *adev,
 			    uint32_t reg, uint32_t acc_flags);
 void amdgpu_device_wreg(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 12dd2aa85b39..aa3c27b6035a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -6059,3 +6059,31 @@ bool amdgpu_device_has_display_hardware(struct amdgpu_device *adev)
 		return true;
 	}
 }
+
+uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev,
+		uint32_t inst, uint32_t reg_addr, char reg_name[],
+		uint32_t expected_value, uint32_t mask)
+{
+	uint32_t ret = 0;
+	uint32_t old_ = 0;
+	uint32_t tmp_ = RREG32(reg_addr);
+	uint32_t loop = adev->usec_timeout;
+
+	while ((tmp_ & (mask)) != (expected_value)) {
+		if (old_ != tmp_) {
+			loop = adev->usec_timeout;
+			old_ = tmp_;
+		} else
+			udelay(1);
+		tmp_ = RREG32(reg_addr);
+		loop--;
+		if (!loop) {
+			DRM_WARN("Register(%d) [%s] failed to reach value 0x%08x != 0x%08xn",
+				  inst, reg_name, (uint32_t)expected_value,
+				  (uint32_t)(tmp_ & (mask)));
+			ret = -ETIMEDOUT;
+			break;
+		}
+	}
+	return ret;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15_common.h b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
index 3f6dac856d49..eb35096756b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15_common.h
+++ b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
@@ -26,6 +26,8 @@
 
 /* Register Access Macros */
 #define SOC15_REG_OFFSET(ip, inst, reg)	(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg)
+#define SOC15_REG_OFFSET1(ip, inst, reg, offset) \
+	(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + (reg)+(offset))
 
 #define __WREG32_SOC15_RLC__(reg, value, flag, hwip) \
 	((amdgpu_sriov_vf(adev) && adev->gfx.rlc.funcs && adev->gfx.rlc.rlcg_reg_access_supported) ? \
@@ -86,31 +88,15 @@
 	 __WREG32_SOC15_RLC__((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) + offset, \
 			  value, 0, ip##_HWIP)
 
-#define SOC15_WAIT_ON_RREG(ip, inst, reg, expected_value, mask) \
-({	int ret = 0;						\
-	do {							\
-		uint32_t old_ = 0;				\
-		uint32_t tmp_ = RREG32(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg); \
-		uint32_t loop = adev->usec_timeout;		\
-		ret = 0;					\
-		while ((tmp_ & (mask)) != (expected_value)) {	\
-			if (old_ != tmp_) {			\
-				loop = adev->usec_timeout;	\
-				old_ = tmp_;			\
-			} else					\
-				udelay(1);			\
-			tmp_ = RREG32(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg); \
-			loop--;					\
-			if (!loop) {				\
-				DRM_WARN("Register(%d) [%s] failed to reach value 0x%08x != 0x%08x\n", \
-					  inst, #reg, (unsigned)expected_value, (unsigned)(tmp_ & (mask))); \
-				ret = -ETIMEDOUT;		\
-				break;				\
-			}					\
-		}						\
-	} while (0);						\
-	ret;							\
-})
+#define SOC15_WAIT_ON_RREG(ip, inst, reg, expected_value, mask)      \
+	amdgpu_device_wait_on_rreg(adev, inst,                       \
+	(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + (reg)), \
+	#reg, expected_value, mask)
+
+#define SOC15_WAIT_ON_RREG_OFFSET(ip, inst, reg, offset, expected_value, mask)  \
+	amdgpu_device_wait_on_rreg(adev, inst,                                  \
+	(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + (reg) + (offset)), \
+	#reg, expected_value, mask)
 
 #define WREG32_RLC(reg, value) \
 	__WREG32_SOC15_RLC__(reg, value, AMDGPU_REGS_RLC, GC_HWIP)
-- 
2.39.2