From: Le Ma <le.ma@xxxxxxx>
SMN address which is larger than 32bit has different indications
through bit[34:32] on different AIDs.
v2: put smn addressing of different AIDs into asic specific place
v3: change to ext_id/ext_offset naming
Signed-off-by: Le Ma <le.ma@xxxxxxx>
Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++
.../drm/amd/amdgpu/aqua_vanjaram_reg_init.c | 19 +++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/soc15.c | 1 +
drivers/gpu/drm/amd/amdgpu/soc15.h | 1 +
drivers/gpu/drm/amd/amdgpu/soc15_common.h | 10 ++++++++++
5 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 4ee79bddd0f5..0d5a327b0d2f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -595,6 +595,8 @@ struct amdgpu_asic_funcs {
/* query video codecs */
int (*query_video_codecs)(struct amdgpu_device *adev, bool encode,
const struct amdgpu_video_codecs **codecs);
+ /* encode "> 32bits" smn addressing */
+ u64 (*encode_ext_smn_addressing)(int ext_id);
};
/*
diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
index 12379c374457..2616bdb40418 100644
--- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
+++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
@@ -100,3 +100,22 @@ void aqua_vanjaram_ip_map_init(struct amdgpu_device *adev)
adev->ip_map.logical_to_dev_inst = aqua_vanjaram_logical_to_dev_inst;
}
+
+/* Fixed pattern for smn addressing on different AIDs:
+ * bit[34]: indicate cross AID access
+ * bit[33:32]: indicate target AID id
+ * AID id range is 0 ~ 3 as maximum AID number is 4.
+ */
+u64 aqua_vanjaram_encode_ext_smn_addressing(int ext_id)
+{
+ u64 ext_offset;
+
+ /* local routing and bit[34:32] will be zeros */
+ if (ext_id == 0)
+ return 0;
+
+ /* Initiated from host, accessing to all non-zero aids are cross traffic */
+ ext_offset = ((u64)(ext_id & 0x3) << 32) | (1ULL << 34);
+
+ return ext_offset;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 6800a85c5966..76c159f90775 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -881,6 +881,7 @@ static const struct amdgpu_asic_funcs aqua_vanjaram_asic_funcs =
.supports_baco = &soc15_supports_baco,
.pre_asic_init = &soc15_pre_asic_init,
.query_video_codecs = &soc15_query_video_codecs,
+ .encode_ext_smn_addressing = &aqua_vanjaram_encode_ext_smn_addressing,
};
static int soc15_common_early_init(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.h b/drivers/gpu/drm/amd/amdgpu/soc15.h
index 9cc2dda087c4..dd48db09aa51 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.h
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.h
@@ -112,6 +112,7 @@ int vega20_reg_base_init(struct amdgpu_device *adev);
int arct_reg_base_init(struct amdgpu_device *adev);
int aldebaran_reg_base_init(struct amdgpu_device *adev);
void aqua_vanjaram_ip_map_init(struct amdgpu_device *adev);
+u64 aqua_vanjaram_encode_ext_smn_addressing(int ext_id);
void vega10_doorbell_index_init(struct amdgpu_device *adev);
void vega20_doorbell_index_init(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15_common.h b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
index 39e4406da4ae..1c9e924b5f8c 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15_common.h
+++ b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
@@ -188,4 +188,14 @@
#define RREG32_SOC15_OFFSET_RLC(ip, inst, reg, offset) \
__RREG32_SOC15_RLC__((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) + offset, AMDGPU_REGS_RLC, ip##_HWIP)
+/* inst equals to ext for some IPs */
+#define RREG32_SOC15_EXT(ip, inst, reg, ext) \
+ RREG32_PCIE_EXT((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) * 4 \
+ + adev->asic_funcs->encode_ext_smn_addressing(ext)) \
+
+#define WREG32_SOC15_EXT(ip, inst, reg, ext, value) \
+ WREG32_PCIE_EXT((adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg) * 4 \
+ + adev->asic_funcs->encode_ext_smn_addressing(ext), \
+ value) \
+
#endif
--
2.39.2
