1/*
2 * Copyright 2020 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_v8_7.h"
24#include "amdgpu_ras.h"
25#include "amdgpu_umc.h"
26#include "amdgpu.h"
27
28#include "rsmu/rsmu_0_0_2_offset.h"
29#include "rsmu/rsmu_0_0_2_sh_mask.h"
30#include "umc/umc_8_7_0_offset.h"
31#include "umc/umc_8_7_0_sh_mask.h"
32
33#define UMC_8_INST_DIST 0x40000
34
35const uint32_t
36 umc_v8_7_channel_idx_tbl[UMC_V8_7_UMC_INSTANCE_NUM][UMC_V8_7_CHANNEL_INSTANCE_NUM] = {
37 {2, 11}, {4, 13},
38 {1, 8}, {7, 14},
39 {10, 3}, {12, 5},
40 {9, 0}, {15, 6}
41};
42
43static inline uint32_t get_umc_v8_7_reg_offset(struct amdgpu_device *adev,
44 uint32_t umc_inst,
45 uint32_t ch_inst)
46{
47 return adev->umc.channel_offs*ch_inst + UMC_8_INST_DIST*umc_inst;
48}
49
50static void umc_v8_7_ecc_info_query_correctable_error_count(struct amdgpu_device *adev,
51 uint32_t umc_inst, uint32_t ch_inst,
52 unsigned long *error_count)
53{
54 uint64_t mc_umc_status;
55 uint32_t eccinfo_table_idx;
56 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
57
58 eccinfo_table_idx = umc_inst * adev->umc.channel_inst_num + ch_inst;
59
60 /* check for SRAM correctable error
61 * MCUMC_STATUS is a 64 bit register
62 */
63 mc_umc_status = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_status;
64 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
65 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
66 *error_count += 1;
67}
68
69static void umc_v8_7_ecc_info_querry_uncorrectable_error_count(struct amdgpu_device *adev,
70 uint32_t umc_inst, uint32_t ch_inst,
71 unsigned long *error_count)
72{
73 uint64_t mc_umc_status;
74 uint32_t eccinfo_table_idx;
75 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
76
77 eccinfo_table_idx = umc_inst * adev->umc.channel_inst_num + ch_inst;
78
79 /* check the MCUMC_STATUS */
80 mc_umc_status = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_status;
81 if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
82 (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
83 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
84 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
85 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
86 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
87 *error_count += 1;
88}
89
90static void umc_v8_7_ecc_info_query_ras_error_count(struct amdgpu_device *adev,
91 void *ras_error_status)
92{
93 struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
94
95 uint32_t umc_inst = 0;
96 uint32_t ch_inst = 0;
97
98 /* TODO: driver needs to toggle DF Cstate to ensure
99 * safe access of UMC registers. Will add the protection
100 */
101 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
102 umc_v8_7_ecc_info_query_correctable_error_count(adev,
103 umc_inst, ch_inst,
104 error_count: &(err_data->ce_count));
105 umc_v8_7_ecc_info_querry_uncorrectable_error_count(adev,
106 umc_inst, ch_inst,
107 error_count: &(err_data->ue_count));
108 }
109}
110
111static void umc_v8_7_convert_error_address(struct amdgpu_device *adev,
112 struct ras_err_data *err_data, uint64_t err_addr,
113 uint32_t ch_inst, uint32_t umc_inst)
114{
115 uint64_t retired_page;
116 uint32_t channel_index;
117
118 channel_index =
119 adev->umc.channel_idx_tbl[umc_inst * adev->umc.channel_inst_num + ch_inst];
120
121 /* translate umc channel address to soc pa, 3 parts are included */
122 retired_page = ADDR_OF_4KB_BLOCK(err_addr) |
123 ADDR_OF_256B_BLOCK(channel_index) |
124 OFFSET_IN_256B_BLOCK(err_addr);
125
126 amdgpu_umc_fill_error_record(err_data, err_addr,
127 retired_page, channel_index, umc_inst);
128}
129
130static void umc_v8_7_ecc_info_query_error_address(struct amdgpu_device *adev,
131 struct ras_err_data *err_data,
132 uint32_t ch_inst,
133 uint32_t umc_inst)
134{
135 uint64_t mc_umc_status, err_addr;
136 uint32_t eccinfo_table_idx;
137 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
138
139 eccinfo_table_idx = umc_inst * adev->umc.channel_inst_num + ch_inst;
140 mc_umc_status = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_status;
141
142 if (mc_umc_status == 0)
143 return;
144
145 if (!err_data->err_addr)
146 return;
147
148 /* calculate error address if ue error is detected */
149 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
150 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1) {
151
152 err_addr = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_addr;
153 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
154
155 umc_v8_7_convert_error_address(adev, err_data, err_addr,
156 ch_inst, umc_inst);
157 }
158}
159
160static void umc_v8_7_ecc_info_query_ras_error_address(struct amdgpu_device *adev,
161 void *ras_error_status)
162{
163 struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
164
165 uint32_t umc_inst = 0;
166 uint32_t ch_inst = 0;
167
168 /* TODO: driver needs to toggle DF Cstate to ensure
169 * safe access of UMC resgisters. Will add the protection
170 * when firmware interface is ready
171 */
172 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
173 umc_v8_7_ecc_info_query_error_address(adev,
174 err_data,
175 ch_inst,
176 umc_inst);
177 }
178}
179
180static void umc_v8_7_clear_error_count_per_channel(struct amdgpu_device *adev,
181 uint32_t umc_reg_offset)
182{
183 uint32_t ecc_err_cnt_addr;
184 uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
185
186 ecc_err_cnt_sel_addr =
187 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCntSel);
188 ecc_err_cnt_addr =
189 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCnt);
190
191 /* select the lower chip */
192 ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr +
193 umc_reg_offset) * 4);
194 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel,
195 UMCCH0_0_GeccErrCntSel,
196 GeccErrCntCsSel, 0);
197 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4,
198 ecc_err_cnt_sel);
199
200 /* clear lower chip error count */
201 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
202 UMC_V8_7_CE_CNT_INIT);
203
204 /* select the higher chip */
205 ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr +
206 umc_reg_offset) * 4);
207 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel,
208 UMCCH0_0_GeccErrCntSel,
209 GeccErrCntCsSel, 1);
210 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4,
211 ecc_err_cnt_sel);
212
213 /* clear higher chip error count */
214 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
215 UMC_V8_7_CE_CNT_INIT);
216}
217
218static void umc_v8_7_clear_error_count(struct amdgpu_device *adev)
219{
220 uint32_t umc_inst = 0;
221 uint32_t ch_inst = 0;
222 uint32_t umc_reg_offset = 0;
223
224 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
225 umc_reg_offset = get_umc_v8_7_reg_offset(adev,
226 umc_inst,
227 ch_inst);
228
229 umc_v8_7_clear_error_count_per_channel(adev,
230 umc_reg_offset);
231 }
232}
233
234static void umc_v8_7_query_correctable_error_count(struct amdgpu_device *adev,
235 uint32_t umc_reg_offset,
236 unsigned long *error_count)
237{
238 uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
239 uint32_t ecc_err_cnt, ecc_err_cnt_addr;
240 uint64_t mc_umc_status;
241 uint32_t mc_umc_status_addr;
242
243 /* UMC 8_7_2 registers */
244 ecc_err_cnt_sel_addr =
245 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCntSel);
246 ecc_err_cnt_addr =
247 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCnt);
248 mc_umc_status_addr =
249 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
250
251 /* select the lower chip and check the error count */
252 ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4);
253 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
254 GeccErrCntCsSel, 0);
255 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
256
257 ecc_err_cnt = RREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4);
258 *error_count +=
259 (REG_GET_FIELD(ecc_err_cnt, UMCCH0_0_GeccErrCnt, GeccErrCnt) -
260 UMC_V8_7_CE_CNT_INIT);
261
262 /* select the higher chip and check the err counter */
263 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
264 GeccErrCntCsSel, 1);
265 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
266
267 ecc_err_cnt = RREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4);
268 *error_count +=
269 (REG_GET_FIELD(ecc_err_cnt, UMCCH0_0_GeccErrCnt, GeccErrCnt) -
270 UMC_V8_7_CE_CNT_INIT);
271
272 /* check for SRAM correctable error
273 MCUMC_STATUS is a 64 bit register */
274 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
275 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, ErrorCodeExt) == 6 &&
276 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
277 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
278 *error_count += 1;
279}
280
281static void umc_v8_7_querry_uncorrectable_error_count(struct amdgpu_device *adev,
282 uint32_t umc_reg_offset,
283 unsigned long *error_count)
284{
285 uint64_t mc_umc_status;
286 uint32_t mc_umc_status_addr;
287
288 mc_umc_status_addr = SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
289
290 /* check the MCUMC_STATUS */
291 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
292 if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
293 (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
294 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
295 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
296 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
297 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
298 *error_count += 1;
299}
300
301static void umc_v8_7_query_ras_error_count(struct amdgpu_device *adev,
302 void *ras_error_status)
303{
304 struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
305
306 uint32_t umc_inst = 0;
307 uint32_t ch_inst = 0;
308 uint32_t umc_reg_offset = 0;
309
310 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
311 umc_reg_offset = get_umc_v8_7_reg_offset(adev,
312 umc_inst,
313 ch_inst);
314
315 umc_v8_7_query_correctable_error_count(adev,
316 umc_reg_offset,
317 error_count: &(err_data->ce_count));
318 umc_v8_7_querry_uncorrectable_error_count(adev,
319 umc_reg_offset,
320 error_count: &(err_data->ue_count));
321 }
322
323 umc_v8_7_clear_error_count(adev);
324}
325
326static void umc_v8_7_query_error_address(struct amdgpu_device *adev,
327 struct ras_err_data *err_data,
328 uint32_t umc_reg_offset,
329 uint32_t ch_inst,
330 uint32_t umc_inst)
331{
332 uint32_t lsb, mc_umc_status_addr;
333 uint64_t mc_umc_status, err_addr, mc_umc_addrt0;
334
335 mc_umc_status_addr =
336 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_STATUST0);
337 mc_umc_addrt0 =
338 SOC15_REG_OFFSET(UMC, 0, mmMCA_UMC_UMC0_MCUMC_ADDRT0);
339 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
340
341 if (mc_umc_status == 0)
342 return;
343
344 if (!err_data->err_addr) {
345 /* clear umc status */
346 WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
347 return;
348 }
349
350 /* calculate error address if ue error is detected */
351 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
352 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1) {
353
354 err_addr = RREG64_PCIE((mc_umc_addrt0 + umc_reg_offset) * 4);
355 /* the lowest lsb bits should be ignored */
356 lsb = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, LSB);
357 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
358 err_addr &= ~((0x1ULL << lsb) - 1);
359
360 umc_v8_7_convert_error_address(adev, err_data, err_addr,
361 ch_inst, umc_inst);
362 }
363
364 /* clear umc status */
365 WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
366}
367
368static void umc_v8_7_query_ras_error_address(struct amdgpu_device *adev,
369 void *ras_error_status)
370{
371 struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
372
373 uint32_t umc_inst = 0;
374 uint32_t ch_inst = 0;
375 uint32_t umc_reg_offset = 0;
376
377 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
378 umc_reg_offset = get_umc_v8_7_reg_offset(adev,
379 umc_inst,
380 ch_inst);
381
382 umc_v8_7_query_error_address(adev,
383 err_data,
384 umc_reg_offset,
385 ch_inst,
386 umc_inst);
387 }
388}
389
390static void umc_v8_7_err_cnt_init_per_channel(struct amdgpu_device *adev,
391 uint32_t umc_reg_offset)
392{
393 uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
394 uint32_t ecc_err_cnt_addr;
395
396 ecc_err_cnt_sel_addr =
397 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCntSel);
398 ecc_err_cnt_addr =
399 SOC15_REG_OFFSET(UMC, 0, mmUMCCH0_0_GeccErrCnt);
400
401 /* select the lower chip and check the error count */
402 ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4);
403 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
404 GeccErrCntCsSel, 0);
405 /* set ce error interrupt type to APIC based interrupt */
406 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
407 GeccErrInt, 0x1);
408 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
409 /* set error count to initial value */
410 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4, UMC_V8_7_CE_CNT_INIT);
411
412 /* select the higher chip and check the err counter */
413 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
414 GeccErrCntCsSel, 1);
415 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
416 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4, UMC_V8_7_CE_CNT_INIT);
417}
418
419static void umc_v8_7_err_cnt_init(struct amdgpu_device *adev)
420{
421 uint32_t umc_inst = 0;
422 uint32_t ch_inst = 0;
423 uint32_t umc_reg_offset = 0;
424
425 LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
426 umc_reg_offset = get_umc_v8_7_reg_offset(adev,
427 umc_inst,
428 ch_inst);
429
430 umc_v8_7_err_cnt_init_per_channel(adev, umc_reg_offset);
431 }
432}
433
434const struct amdgpu_ras_block_hw_ops umc_v8_7_ras_hw_ops = {
435 .query_ras_error_count = umc_v8_7_query_ras_error_count,
436 .query_ras_error_address = umc_v8_7_query_ras_error_address,
437};
438
439struct amdgpu_umc_ras umc_v8_7_ras = {
440 .ras_block = {
441 .hw_ops = &umc_v8_7_ras_hw_ops,
442 },
443 .err_cnt_init = umc_v8_7_err_cnt_init,
444 .ecc_info_query_ras_error_count = umc_v8_7_ecc_info_query_ras_error_count,
445 .ecc_info_query_ras_error_address = umc_v8_7_ecc_info_query_ras_error_address,
446};
447

source code of linux/drivers/gpu/drm/amd/amdgpu/umc_v8_7.c