drivers/gpu/drm/amd/amdgpu/umc_v6_1.c

   1 /*
   2  * Copyright 2019 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 #include "umc_v6_1.h"
  24 #include "amdgpu_ras.h"
  25 #include "amdgpu.h"
  26
  27 #include "rsmu/rsmu_0_0_2_offset.h"
  28 #include "rsmu/rsmu_0_0_2_sh_mask.h"
  29 #include "umc/umc_6_1_1_offset.h"
  30 #include "umc/umc_6_1_1_sh_mask.h"
  31
  32 #define smnMCA_UMC0_MCUMC_ADDRT0        0x50f10
  33
  34 /*
  35  * (addr / 256) * 8192, the higher 26 bits in ErrorAddr
  36  * is the index of 8KB block
  37  */
  38 #define ADDR_OF_8KB_BLOCK(addr)         (((addr) & ~0xffULL) << 5)
  39 /* channel index is the index of 256B block */
  40 #define ADDR_OF_256B_BLOCK(channel_index)       ((channel_index) << 8)
  41 /* offset in 256B block */
  42 #define OFFSET_IN_256B_BLOCK(addr)              ((addr) & 0xffULL)
  43
  44 const uint32_t
  45         umc_v6_1_channel_idx_tbl[UMC_V6_1_UMC_INSTANCE_NUM][UMC_V6_1_CHANNEL_INSTANCE_NUM] = {
  46                 {2, 18, 11, 27},        {4, 20, 13, 29},
  47                 {1, 17, 8, 24},         {7, 23, 14, 30},
  48                 {10, 26, 3, 19},        {12, 28, 5, 21},
  49                 {9, 25, 0, 16},         {15, 31, 6, 22}
  50 };
  51
  52 static void umc_v6_1_enable_umc_index_mode(struct amdgpu_device *adev,
  53                                            uint32_t umc_instance)
  54 {
  55         uint32_t rsmu_umc_index;
  56
  57         rsmu_umc_index = RREG32_SOC15(RSMU, 0,
  58                         mmRSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU);
  59         rsmu_umc_index = REG_SET_FIELD(rsmu_umc_index,
  60                         RSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU,
  61                         RSMU_UMC_INDEX_MODE_EN, 1);
  62         rsmu_umc_index = REG_SET_FIELD(rsmu_umc_index,
  63                         RSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU,
  64                         RSMU_UMC_INDEX_INSTANCE, umc_instance);
  65         rsmu_umc_index = REG_SET_FIELD(rsmu_umc_index,
  66                         RSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU,
  67                         RSMU_UMC_INDEX_WREN, 1 << umc_instance);
  68         WREG32_SOC15(RSMU, 0, mmRSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU,
  69                                 rsmu_umc_index);
  70 }
  71
  72 static void umc_v6_1_disable_umc_index_mode(struct amdgpu_device *adev)
  73 {
  74         WREG32_FIELD15(RSMU, 0, RSMU_UMC_INDEX_REGISTER_NBIF_VG20_GPU,
  75                         RSMU_UMC_INDEX_MODE_EN, 0);
  76 }
  77
  78 static void umc_v6_1_query_correctable_error_count(struct amdgpu_device *adev,
  79                                                    uint32_t umc_reg_offset,
  80                                                    unsigned long *error_count)
  81 {
  82         uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
  83         uint32_t ecc_err_cnt, ecc_err_cnt_addr;
  84         uint64_t mc_umc_status;
  85         uint32_t mc_umc_status_addr;
  86
  87         ecc_err_cnt_sel_addr =
  88                 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_EccErrCntSel);
  89         ecc_err_cnt_addr =
  90                 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_EccErrCnt);
  91         mc_umc_status_addr =
  92                 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
  93
  94         /* select the lower chip and check the error count */
  95         ecc_err_cnt_sel = RREG32(ecc_err_cnt_sel_addr + umc_reg_offset);
  96         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_EccErrCntSel,
  97                                         EccErrCntCsSel, 0);
  98         WREG32(ecc_err_cnt_sel_addr + umc_reg_offset, ecc_err_cnt_sel);
  99         ecc_err_cnt = RREG32(ecc_err_cnt_addr + umc_reg_offset);
 100         *error_count +=
 101                 (REG_GET_FIELD(ecc_err_cnt, UMCCH0_0_EccErrCnt, EccErrCnt) -
 102                  UMC_V6_1_CE_CNT_INIT);
 103         /* clear the lower chip err count */
 104         WREG32(ecc_err_cnt_addr + umc_reg_offset, UMC_V6_1_CE_CNT_INIT);
 105
 106         /* select the higher chip and check the err counter */
 107         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_EccErrCntSel,
 108                                         EccErrCntCsSel, 1);
 109         WREG32(ecc_err_cnt_sel_addr + umc_reg_offset, ecc_err_cnt_sel);
 110         ecc_err_cnt = RREG32(ecc_err_cnt_addr + umc_reg_offset);
 111         *error_count +=
 112                 (REG_GET_FIELD(ecc_err_cnt, UMCCH0_0_EccErrCnt, EccErrCnt) -
 113                  UMC_V6_1_CE_CNT_INIT);
 114         /* clear the higher chip err count */
 115         WREG32(ecc_err_cnt_addr + umc_reg_offset, UMC_V6_1_CE_CNT_INIT);
 116
 117         /* check for SRAM correctable error
 118           MCUMC_STATUS is a 64 bit register */
 119         mc_umc_status = RREG64_UMC(mc_umc_status_addr + umc_reg_offset);
 120         if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, ErrorCodeExt) == 6 &&
 121             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
 122             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
 123                 *error_count += 1;
 124 }
 125
 126 static void umc_v6_1_querry_uncorrectable_error_count(struct amdgpu_device *adev,
 127                                                       uint32_t umc_reg_offset,
 128                                                       unsigned long *error_count)
 129 {
 130         uint64_t mc_umc_status;
 131         uint32_t mc_umc_status_addr;
 132
 133         mc_umc_status_addr =
 134                 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
 135
 136         /* check the MCUMC_STATUS */
 137         mc_umc_status = RREG64_UMC(mc_umc_status_addr + umc_reg_offset);
 138         if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
 139             (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
 140             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
 141             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
 142             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
 143             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
 144                 *error_count += 1;
 145 }
 146
 147 static void umc_v6_1_query_error_count(struct amdgpu_device *adev,
 148                                            struct ras_err_data *err_data, uint32_t umc_reg_offset,
 149                                            uint32_t channel_index)
 150 {
 151         umc_v6_1_query_correctable_error_count(adev, umc_reg_offset,
 152                                                    &(err_data->ce_count));
 153         umc_v6_1_querry_uncorrectable_error_count(adev, umc_reg_offset,
 154                                                   &(err_data->ue_count));
 155 }
 156
 157 static void umc_v6_1_query_ras_error_count(struct amdgpu_device *adev,
 158                                            void *ras_error_status)
 159 {
 160         amdgpu_umc_for_each_channel(umc_v6_1_query_error_count);
 161 }
 162
 163 static void umc_v6_1_query_error_address(struct amdgpu_device *adev,
 164                                          struct ras_err_data *err_data,
 165                                          uint32_t umc_reg_offset, uint32_t channel_index)
 166 {
 167         uint32_t lsb, mc_umc_status_addr;
 168         uint64_t mc_umc_status, err_addr;
 169
 170         mc_umc_status_addr =
 171                 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
 172
 173         /* skip error address process if -ENOMEM */
 174         if (!err_data->err_addr) {
 175                 /* clear umc status */
 176                 WREG64_UMC(mc_umc_status_addr + umc_reg_offset, 0x0ULL);
 177                 return;
 178         }
 179
 180         mc_umc_status = RREG64_UMC(mc_umc_status_addr + umc_reg_offset);
 181
 182         /* calculate error address if ue/ce error is detected */
 183         if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
 184             (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
 185             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)) {
 186                 err_addr = RREG64_PCIE(smnMCA_UMC0_MCUMC_ADDRT0 + umc_reg_offset * 4);
 187
 188                 /* the lowest lsb bits should be ignored */
 189                 lsb = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, LSB);
 190                 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
 191                 err_addr &= ~((0x1ULL << lsb) - 1);
 192
 193                 /* translate umc channel address to soc pa, 3 parts are included */
 194                 err_data->err_addr[err_data->err_addr_cnt] =
 195                                                 ADDR_OF_8KB_BLOCK(err_addr) |
 196                                                 ADDR_OF_256B_BLOCK(channel_index) |
 197                                                 OFFSET_IN_256B_BLOCK(err_addr);
 198
 199                 err_data->err_addr_cnt++;
 200         }
 201
 202         /* clear umc status */
 203         WREG64_UMC(mc_umc_status_addr + umc_reg_offset, 0x0ULL);
 204 }
 205
 206 static void umc_v6_1_query_ras_error_address(struct amdgpu_device *adev,
 207                                              void *ras_error_status)
 208 {
 209         amdgpu_umc_for_each_channel(umc_v6_1_query_error_address);
 210 }
 211
 212 static void umc_v6_1_ras_init_per_channel(struct amdgpu_device *adev,
 213                                          struct ras_err_data *err_data,
 214                                          uint32_t umc_reg_offset, uint32_t channel_index)
 215 {
 216         uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
 217         uint32_t ecc_err_cnt_addr;
 218
 219         ecc_err_cnt_sel_addr =
 220                 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_EccErrCntSel);
 221         ecc_err_cnt_addr =
 222                 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_EccErrCnt);
 223
 224         /* select the lower chip and check the error count */
 225         ecc_err_cnt_sel = RREG32(ecc_err_cnt_sel_addr + umc_reg_offset);
 226         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_EccErrCntSel,
 227                                         EccErrCntCsSel, 0);
 228         /* set ce error interrupt type to APIC based interrupt */
 229         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_EccErrCntSel,
 230                                         EccErrInt, 0x1);
 231         WREG32(ecc_err_cnt_sel_addr + umc_reg_offset, ecc_err_cnt_sel);
 232         /* set error count to initial value */
 233         WREG32(ecc_err_cnt_addr + umc_reg_offset, UMC_V6_1_CE_CNT_INIT);
 234
 235         /* select the higher chip and check the err counter */
 236         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_EccErrCntSel,
 237                                         EccErrCntCsSel, 1);
 238         WREG32(ecc_err_cnt_sel_addr + umc_reg_offset, ecc_err_cnt_sel);
 239         WREG32(ecc_err_cnt_addr + umc_reg_offset, UMC_V6_1_CE_CNT_INIT);
 240 }
 241
 242 static void umc_v6_1_ras_init(struct amdgpu_device *adev)
 243 {
 244         void *ras_error_status = NULL;
 245
 246         amdgpu_umc_for_each_channel(umc_v6_1_ras_init_per_channel);
 247 }
 248
 249 const struct amdgpu_umc_funcs umc_v6_1_funcs = {
 250         .ras_init = umc_v6_1_ras_init,
 251         .query_ras_error_count = umc_v6_1_query_ras_error_count,
 252         .query_ras_error_address = umc_v6_1_query_ras_error_address,
 253         .enable_umc_index_mode = umc_v6_1_enable_umc_index_mode,
 254         .disable_umc_index_mode = umc_v6_1_disable_umc_index_mode,
 255 };