1/*
2 * Copyright 2022 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_10.h"
24#include "amdgpu_ras.h"
25#include "amdgpu_umc.h"
26#include "amdgpu.h"
27#include "umc/umc_8_10_0_offset.h"
28#include "umc/umc_8_10_0_sh_mask.h"
29
30#define UMC_8_NODE_DIST 0x800000
31#define UMC_8_INST_DIST 0x4000
32
33struct channelnum_map_colbit {
34 uint32_t channel_num;
35 uint32_t col_bit;
36};
37
38const struct channelnum_map_colbit umc_v8_10_channelnum_map_colbit_table[] = {
39 {24, 13},
40 {20, 13},
41 {16, 12},
42 {14, 12},
43 {12, 12},
44 {10, 12},
45 {6, 11},
46};
47
48const uint32_t
49 umc_v8_10_channel_idx_tbl_ext0[]
50 [UMC_V8_10_UMC_INSTANCE_NUM]
51 [UMC_V8_10_CHANNEL_INSTANCE_NUM] = {
52 {{1, 5}, {7, 3}},
53 {{14, 15}, {13, 12}},
54 {{10, 11}, {9, 8}},
55 {{6, 2}, {0, 4}}
56 };
57
58const uint32_t
59 umc_v8_10_channel_idx_tbl[]
60 [UMC_V8_10_UMC_INSTANCE_NUM]
61 [UMC_V8_10_CHANNEL_INSTANCE_NUM] = {
62 {{16, 18}, {17, 19}},
63 {{15, 11}, {3, 7}},
64 {{1, 5}, {13, 9}},
65 {{23, 21}, {22, 20}},
66 {{0, 4}, {12, 8}},
67 {{14, 10}, {2, 6}}
68 };
69
70static inline uint32_t get_umc_v8_10_reg_offset(struct amdgpu_device *adev,
71 uint32_t node_inst,
72 uint32_t umc_inst,
73 uint32_t ch_inst)
74{
75 return adev->umc.channel_offs * ch_inst + UMC_8_INST_DIST * umc_inst +
76 UMC_8_NODE_DIST * node_inst;
77}
78
79static int umc_v8_10_clear_error_count_per_channel(struct amdgpu_device *adev,
80 uint32_t node_inst, uint32_t umc_inst,
81 uint32_t ch_inst, void *data)
82{
83 uint32_t ecc_err_cnt_addr;
84 uint32_t umc_reg_offset =
85 get_umc_v8_10_reg_offset(adev, node_inst, umc_inst, ch_inst);
86
87 ecc_err_cnt_addr =
88 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCnt);
89
90 /* clear error count */
91 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
92 UMC_V8_10_CE_CNT_INIT);
93
94 return 0;
95}
96
97static void umc_v8_10_clear_error_count(struct amdgpu_device *adev)
98{
99 amdgpu_umc_loop_channels(adev,
100 func: umc_v8_10_clear_error_count_per_channel, NULL);
101}
102
103static void umc_v8_10_query_correctable_error_count(struct amdgpu_device *adev,
104 uint32_t umc_reg_offset,
105 unsigned long *error_count)
106{
107 uint64_t mc_umc_status;
108 uint32_t mc_umc_status_addr;
109
110 /* UMC 8_10 registers */
111 mc_umc_status_addr =
112 SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
113
114 /* Rely on MCUMC_STATUS for correctable error counter
115 * MCUMC_STATUS is a 64 bit register
116 */
117 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
118 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
119 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
120 *error_count += 1;
121}
122
123static void umc_v8_10_query_uncorrectable_error_count(struct amdgpu_device *adev,
124 uint32_t umc_reg_offset,
125 unsigned long *error_count)
126{
127 uint64_t mc_umc_status;
128 uint32_t mc_umc_status_addr;
129
130 mc_umc_status_addr = SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
131
132 /* Check the MCUMC_STATUS. */
133 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
134 if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
135 (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
136 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
137 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
138 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
139 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
140 *error_count += 1;
141}
142
143static int umc_v8_10_query_ecc_error_count(struct amdgpu_device *adev,
144 uint32_t node_inst, uint32_t umc_inst,
145 uint32_t ch_inst, void *data)
146{
147 struct ras_err_data *err_data = (struct ras_err_data *)data;
148 uint32_t umc_reg_offset =
149 get_umc_v8_10_reg_offset(adev, node_inst, umc_inst, ch_inst);
150
151 umc_v8_10_query_correctable_error_count(adev,
152 umc_reg_offset,
153 error_count: &(err_data->ce_count));
154 umc_v8_10_query_uncorrectable_error_count(adev,
155 umc_reg_offset,
156 error_count: &(err_data->ue_count));
157
158 return 0;
159}
160
161static void umc_v8_10_query_ras_error_count(struct amdgpu_device *adev,
162 void *ras_error_status)
163{
164 amdgpu_umc_loop_channels(adev,
165 func: umc_v8_10_query_ecc_error_count, data: ras_error_status);
166
167 umc_v8_10_clear_error_count(adev);
168}
169
170static uint32_t umc_v8_10_get_col_bit(uint32_t channel_num)
171{
172 uint32_t t = 0;
173
174 for (t = 0; t < ARRAY_SIZE(umc_v8_10_channelnum_map_colbit_table); t++)
175 if (channel_num == umc_v8_10_channelnum_map_colbit_table[t].channel_num)
176 return umc_v8_10_channelnum_map_colbit_table[t].col_bit;
177
178 /* Failed to get col_bit. */
179 return U32_MAX;
180}
181
182/*
183 * Mapping normal address to soc physical address in swizzle mode.
184 */
185static int umc_v8_10_swizzle_mode_na_to_pa(struct amdgpu_device *adev,
186 uint32_t channel_idx,
187 uint64_t na, uint64_t *soc_pa)
188{
189 uint32_t channel_num = UMC_V8_10_TOTAL_CHANNEL_NUM(adev);
190 uint32_t col_bit = umc_v8_10_get_col_bit(channel_num);
191 uint64_t tmp_addr;
192
193 if (col_bit == U32_MAX)
194 return -1;
195
196 tmp_addr = SWIZZLE_MODE_TMP_ADDR(na, channel_num, channel_idx);
197 *soc_pa = SWIZZLE_MODE_ADDR_HI(tmp_addr, col_bit) |
198 SWIZZLE_MODE_ADDR_MID(na, col_bit) |
199 SWIZZLE_MODE_ADDR_LOW(tmp_addr, col_bit) |
200 SWIZZLE_MODE_ADDR_LSB(na);
201
202 return 0;
203}
204
205static void umc_v8_10_convert_error_address(struct amdgpu_device *adev,
206 struct ras_err_data *err_data, uint64_t err_addr,
207 uint32_t ch_inst, uint32_t umc_inst,
208 uint32_t node_inst, uint64_t mc_umc_status)
209{
210 uint64_t na_err_addr_base;
211 uint64_t na_err_addr, retired_page_addr;
212 uint32_t channel_index, addr_lsb, col = 0;
213 int ret = 0;
214
215 channel_index =
216 adev->umc.channel_idx_tbl[node_inst * adev->umc.umc_inst_num *
217 adev->umc.channel_inst_num +
218 umc_inst * adev->umc.channel_inst_num +
219 ch_inst];
220
221 /* the lowest lsb bits should be ignored */
222 addr_lsb = REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrLsb);
223 err_addr &= ~((0x1ULL << addr_lsb) - 1);
224 na_err_addr_base = err_addr & ~(0x3ULL << UMC_V8_10_NA_C5_BIT);
225
226 /* loop for all possibilities of [C6 C5] in normal address. */
227 for (col = 0; col < UMC_V8_10_NA_COL_2BITS_POWER_OF_2_NUM; col++) {
228 na_err_addr = na_err_addr_base | (col << UMC_V8_10_NA_C5_BIT);
229
230 /* Mapping normal error address to retired soc physical address. */
231 ret = umc_v8_10_swizzle_mode_na_to_pa(adev, channel_idx: channel_index,
232 na: na_err_addr, soc_pa: &retired_page_addr);
233 if (ret) {
234 dev_err(adev->dev, "Failed to map pa from umc na.\n");
235 break;
236 }
237 dev_info(adev->dev, "Error Address(PA): 0x%llx\n",
238 retired_page_addr);
239 amdgpu_umc_fill_error_record(err_data, err_addr: na_err_addr,
240 retired_page: retired_page_addr, channel_index, umc_inst);
241 }
242}
243
244static int umc_v8_10_query_error_address(struct amdgpu_device *adev,
245 uint32_t node_inst, uint32_t umc_inst,
246 uint32_t ch_inst, void *data)
247{
248 uint64_t mc_umc_status_addr;
249 uint64_t mc_umc_status, err_addr;
250 uint64_t mc_umc_addrt0;
251 struct ras_err_data *err_data = (struct ras_err_data *)data;
252 uint32_t umc_reg_offset =
253 get_umc_v8_10_reg_offset(adev, node_inst, umc_inst, ch_inst);
254
255 mc_umc_status_addr =
256 SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
257 mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
258
259 if (mc_umc_status == 0)
260 return 0;
261
262 if (!err_data->err_addr) {
263 /* clear umc status */
264 WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
265 return 0;
266 }
267
268 /* calculate error address if ue error is detected */
269 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
270 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrV) == 1 &&
271 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1) {
272
273 mc_umc_addrt0 = SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_ADDRT0);
274 err_addr = RREG64_PCIE((mc_umc_addrt0 + umc_reg_offset) * 4);
275 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
276
277 umc_v8_10_convert_error_address(adev, err_data, err_addr,
278 ch_inst, umc_inst, node_inst, mc_umc_status);
279 }
280
281 /* clear umc status */
282 WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
283
284 return 0;
285}
286
287static void umc_v8_10_query_ras_error_address(struct amdgpu_device *adev,
288 void *ras_error_status)
289{
290 amdgpu_umc_loop_channels(adev,
291 func: umc_v8_10_query_error_address, data: ras_error_status);
292}
293
294static int umc_v8_10_err_cnt_init_per_channel(struct amdgpu_device *adev,
295 uint32_t node_inst, uint32_t umc_inst,
296 uint32_t ch_inst, void *data)
297{
298 uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
299 uint32_t ecc_err_cnt_addr;
300 uint32_t umc_reg_offset =
301 get_umc_v8_10_reg_offset(adev, node_inst, umc_inst, ch_inst);
302
303 ecc_err_cnt_sel_addr =
304 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCntSel);
305 ecc_err_cnt_addr =
306 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCnt);
307
308 ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4);
309
310 /* set ce error interrupt type to APIC based interrupt */
311 ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
312 GeccErrInt, 0x1);
313 WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
314 /* set error count to initial value */
315 WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4, UMC_V8_10_CE_CNT_INIT);
316
317 return 0;
318}
319
320static void umc_v8_10_err_cnt_init(struct amdgpu_device *adev)
321{
322 amdgpu_umc_loop_channels(adev,
323 func: umc_v8_10_err_cnt_init_per_channel, NULL);
324}
325
326static bool umc_v8_10_query_ras_poison_mode(struct amdgpu_device *adev)
327{
328 /*
329 * Force return true, because UMCCH0_0_GeccCtrl
330 * is not accessible from host side
331 */
332 return true;
333}
334
335static void umc_v8_10_ecc_info_query_correctable_error_count(struct amdgpu_device *adev,
336 uint32_t node_inst, uint32_t umc_inst, uint32_t ch_inst,
337 unsigned long *error_count)
338{
339 uint16_t ecc_ce_cnt;
340 uint32_t eccinfo_table_idx;
341 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
342
343 eccinfo_table_idx = node_inst * adev->umc.umc_inst_num *
344 adev->umc.channel_inst_num +
345 umc_inst * adev->umc.channel_inst_num +
346 ch_inst;
347
348 /* Retrieve CE count */
349 ecc_ce_cnt = ras->umc_ecc.ecc[eccinfo_table_idx].ce_count_lo_chip;
350 if (ecc_ce_cnt)
351 *error_count += ecc_ce_cnt;
352}
353
354static void umc_v8_10_ecc_info_query_uncorrectable_error_count(struct amdgpu_device *adev,
355 uint32_t node_inst, uint32_t umc_inst, uint32_t ch_inst,
356 unsigned long *error_count)
357{
358 uint64_t mc_umc_status;
359 uint32_t eccinfo_table_idx;
360 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
361
362 eccinfo_table_idx = node_inst * adev->umc.umc_inst_num *
363 adev->umc.channel_inst_num +
364 umc_inst * adev->umc.channel_inst_num +
365 ch_inst;
366
367 /* check the MCUMC_STATUS */
368 mc_umc_status = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_status;
369 if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
370 (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
371 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
372 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
373 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
374 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1)) {
375 *error_count += 1;
376 }
377}
378
379static int umc_v8_10_ecc_info_query_ecc_error_count(struct amdgpu_device *adev,
380 uint32_t node_inst, uint32_t umc_inst,
381 uint32_t ch_inst, void *data)
382{
383 struct ras_err_data *err_data = (struct ras_err_data *)data;
384
385 umc_v8_10_ecc_info_query_correctable_error_count(adev,
386 node_inst, umc_inst, ch_inst,
387 error_count: &(err_data->ce_count));
388 umc_v8_10_ecc_info_query_uncorrectable_error_count(adev,
389 node_inst, umc_inst, ch_inst,
390 error_count: &(err_data->ue_count));
391 return 0;
392}
393
394static void umc_v8_10_ecc_info_query_ras_error_count(struct amdgpu_device *adev,
395 void *ras_error_status)
396{
397 amdgpu_umc_loop_channels(adev,
398 func: umc_v8_10_ecc_info_query_ecc_error_count, data: ras_error_status);
399}
400
401static int umc_v8_10_ecc_info_query_error_address(struct amdgpu_device *adev,
402 uint32_t node_inst, uint32_t umc_inst,
403 uint32_t ch_inst, void *data)
404{
405 uint32_t eccinfo_table_idx;
406 uint64_t mc_umc_status, err_addr;
407 struct ras_err_data *err_data = (struct ras_err_data *)data;
408 struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
409
410 eccinfo_table_idx = node_inst * adev->umc.umc_inst_num *
411 adev->umc.channel_inst_num +
412 umc_inst * adev->umc.channel_inst_num +
413 ch_inst;
414
415 mc_umc_status = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_status;
416
417 if (mc_umc_status == 0)
418 return 0;
419
420 if (!err_data->err_addr)
421 return 0;
422
423 /* calculate error address if ue error is detected */
424 if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
425 REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrV) == 1 &&
426 (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1)) {
427
428 err_addr = ras->umc_ecc.ecc[eccinfo_table_idx].mca_umc_addr;
429 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
430
431 umc_v8_10_convert_error_address(adev, err_data, err_addr,
432 ch_inst, umc_inst, node_inst, mc_umc_status);
433 }
434
435 return 0;
436}
437
438static void umc_v8_10_ecc_info_query_ras_error_address(struct amdgpu_device *adev,
439 void *ras_error_status)
440{
441 amdgpu_umc_loop_channels(adev,
442 func: umc_v8_10_ecc_info_query_error_address, data: ras_error_status);
443}
444
445const struct amdgpu_ras_block_hw_ops umc_v8_10_ras_hw_ops = {
446 .query_ras_error_count = umc_v8_10_query_ras_error_count,
447 .query_ras_error_address = umc_v8_10_query_ras_error_address,
448};
449
450struct amdgpu_umc_ras umc_v8_10_ras = {
451 .ras_block = {
452 .hw_ops = &umc_v8_10_ras_hw_ops,
453 },
454 .err_cnt_init = umc_v8_10_err_cnt_init,
455 .query_ras_poison_mode = umc_v8_10_query_ras_poison_mode,
456 .ecc_info_query_ras_error_count = umc_v8_10_ecc_info_query_ras_error_count,
457 .ecc_info_query_ras_error_address = umc_v8_10_ecc_info_query_ras_error_address,
458};
459

source code of linux/drivers/gpu/drm/amd/amdgpu/umc_v8_10.c