umc query_ras_error_count will be invoked to query
umc correctable and uncorrectable error. It will
reset the umc ras error counter after the query.
Signed-off-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: John Clements <John.Clements@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/umc_v6_7.c | 90 +++++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/umc_v6_7.h | 2 +
2 files changed, 92 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c
index 05fec10b1ed9..fe666ac93b54 100644
--- a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c
+++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c
@@ -27,6 +27,13 @@
#include "umc/umc_6_7_0_offset.h"
#include "umc/umc_6_7_0_sh_mask.h"
+static inline uint32_t get_umc_v6_7_reg_offset(struct amdgpu_device *adev,
+ uint32_t umc_inst,
+ uint32_t ch_inst)
+{
+ return adev->umc.channel_offs * ch_inst + UMC_V6_7_INST_DIST * umc_inst;
+}
+
static void umc_v6_7_query_correctable_error_count(struct amdgpu_device *adev,
uint32_t umc_reg_offset,
unsigned long *error_count)
@@ -94,6 +101,89 @@ static void umc_v6_7_querry_uncorrectable_error_count(struct amdgpu_device *adev
*error_count += 1;
}
+static void umc_v6_7_reset_error_count_per_channel(struct amdgpu_device *adev,
+ uint32_t umc_reg_offset)
+{
+ uint32_t ecc_err_cnt_addr;
+ uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
+
+ ecc_err_cnt_sel_addr =
+ SOC15_REG_OFFSET(UMC, 0,
+ regUMCCH0_0_EccErrCntSel);
+ ecc_err_cnt_addr =
+ SOC15_REG_OFFSET(UMC, 0,
+ regUMCCH0_0_EccErrCnt);
+
+ /* select the lower chip */
+ ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr +
+ umc_reg_offset) * 4);
+ ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel,
+ UMCCH0_0_EccErrCntSel,
+ EccErrCntCsSel, 0);
+ WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4,
+ ecc_err_cnt_sel);
+
+ /* clear lower chip error count */
+ WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
+ UMC_V6_7_CE_CNT_INIT);
+
+ /* select the higher chip */
+ ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr +
+ umc_reg_offset) * 4);
+ ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel,
+ UMCCH0_0_EccErrCntSel,
+ EccErrCntCsSel, 1);
+ WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4,
+ ecc_err_cnt_sel);
+
+ /* clear higher chip error count */
+ WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
+ UMC_V6_7_CE_CNT_INIT);
+}
+
+static void umc_v6_7_reset_error_count(struct amdgpu_device *adev)
+{
+ uint32_t umc_inst = 0;
+ uint32_t ch_inst = 0;
+ uint32_t umc_reg_offset = 0;
+
+ LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
+ umc_reg_offset = get_umc_v6_7_reg_offset(adev,
+ umc_inst,
+ ch_inst);
+
+ umc_v6_7_reset_error_count_per_channel(adev,
+ umc_reg_offset);
+ }
+}
+
+static void umc_v6_7_query_ras_error_count(struct amdgpu_device *adev,
+ void *ras_error_status)
+{
+ struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
+
+ uint32_t umc_inst = 0;
+ uint32_t ch_inst = 0;
+ uint32_t umc_reg_offset = 0;
+
+ /*TODO: driver needs to toggle DF Cstate to ensure
+ * safe access of UMC registers. Will add the protection */
+ LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
+ umc_reg_offset = get_umc_v6_7_reg_offset(adev,
+ umc_inst,
+ ch_inst);
+ umc_v6_7_query_correctable_error_count(adev,
+ umc_reg_offset,
+ &(err_data->ce_count));
+ umc_v6_7_querry_uncorrectable_error_count(adev,
+ umc_reg_offset,
+ &(err_data->ue_count));
+ }
+
+ umc_v6_7_reset_error_count(adev);
+}
+
const struct amdgpu_umc_funcs umc_v6_7_funcs = {
.ras_late_init = amdgpu_umc_ras_late_init,
+ .query_ras_error_count = umc_v6_7_query_ras_error_count,
};
diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.h b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.h
index 6b881226b4f3..e59dbdb6ef9b 100644
--- a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.h
+++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.h
@@ -30,6 +30,8 @@
/* umc ce count initial value */
#define UMC_V6_7_CE_CNT_INIT (UMC_V6_7_CE_CNT_MAX - UMC_V6_7_CE_INT_THRESHOLD)
+#define UMC_V6_7_INST_DIST 0x40000
+
extern const struct amdgpu_umc_funcs umc_v6_7_funcs;
#endif
--
2.17.1
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