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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2022 HiSilicon Limited. */
3#include <linux/hisi_acc_qm.h>
4#include "qm_common.h"
5
6#define QM_DFX_BASE 0x0100000
7#define QM_DFX_STATE1 0x0104000
8#define QM_DFX_STATE2 0x01040C8
9#define QM_DFX_COMMON 0x0000
10#define QM_DFX_BASE_LEN 0x5A
11#define QM_DFX_STATE1_LEN 0x2E
12#define QM_DFX_STATE2_LEN 0x11
13#define QM_DFX_COMMON_LEN 0xC3
14#define QM_DFX_REGS_LEN 4UL
15#define QM_DBG_TMP_BUF_LEN 22
16#define QM_XQC_ADDR_MASK GENMASK(31, 0)
17#define CURRENT_FUN_MASK GENMASK(5, 0)
18#define CURRENT_Q_MASK GENMASK(31, 16)
19#define QM_SQE_ADDR_MASK GENMASK(7, 0)
20
21#define QM_DFX_MB_CNT_VF 0x104010
22#define QM_DFX_DB_CNT_VF 0x104020
23#define QM_DFX_SQE_CNT_VF_SQN 0x104030
24#define QM_DFX_CQE_CNT_VF_CQN 0x104040
25#define QM_DFX_QN_SHIFT 16
26#define QM_DFX_CNT_CLR_CE 0x100118
27#define QM_DBG_WRITE_LEN 1024
28#define QM_IN_IDLE_ST_REG 0x1040e4
29#define QM_IN_IDLE_STATE 0x1
30
31static const char * const qm_debug_file_name[] = {
32 [CURRENT_QM] = "current_qm",
33 [CURRENT_Q] = "current_q",
34 [CLEAR_ENABLE] = "clear_enable",
35};
36
37static const char * const qm_s[] = {
38 "work", "stop",
39};
40
41struct qm_dfx_item {
42 const char *name;
43 u32 offset;
44};
45
46struct qm_cmd_dump_item {
47 const char *cmd;
48 const char *info_name;
49 int (*dump_fn)(struct hisi_qm *qm, char *cmd, const char *info_name);
50};
51
52static struct qm_dfx_item qm_dfx_files[] = {
53 {"err_irq", offsetof(struct qm_dfx, err_irq_cnt)},
54 {"aeq_irq", offsetof(struct qm_dfx, aeq_irq_cnt)},
55 {"abnormal_irq", offsetof(struct qm_dfx, abnormal_irq_cnt)},
56 {"create_qp_err", offsetof(struct qm_dfx, create_qp_err_cnt)},
57 {"mb_err", offsetof(struct qm_dfx, mb_err_cnt)},
58};
59
60#define CNT_CYC_REGS_NUM 10
61static const struct debugfs_reg32 qm_dfx_regs[] = {
62 /* XXX_CNT are reading clear register */
63 {"QM_ECC_1BIT_CNT ", 0x104000},
64 {"QM_ECC_MBIT_CNT ", 0x104008},
65 {"QM_DFX_MB_CNT ", 0x104018},
66 {"QM_DFX_DB_CNT ", 0x104028},
67 {"QM_DFX_SQE_CNT ", 0x104038},
68 {"QM_DFX_CQE_CNT ", 0x104048},
69 {"QM_DFX_SEND_SQE_TO_ACC_CNT ", 0x104050},
70 {"QM_DFX_WB_SQE_FROM_ACC_CNT ", 0x104058},
71 {"QM_DFX_ACC_FINISH_CNT ", 0x104060},
72 {"QM_DFX_CQE_ERR_CNT ", 0x1040b4},
73 {"QM_DFX_FUNS_ACTIVE_ST ", 0x200},
74 {"QM_ECC_1BIT_INF ", 0x104004},
75 {"QM_ECC_MBIT_INF ", 0x10400c},
76 {"QM_DFX_ACC_RDY_VLD0 ", 0x1040a0},
77 {"QM_DFX_ACC_RDY_VLD1 ", 0x1040a4},
78 {"QM_DFX_AXI_RDY_VLD ", 0x1040a8},
79 {"QM_DFX_FF_ST0 ", 0x1040c8},
80 {"QM_DFX_FF_ST1 ", 0x1040cc},
81 {"QM_DFX_FF_ST2 ", 0x1040d0},
82 {"QM_DFX_FF_ST3 ", 0x1040d4},
83 {"QM_DFX_FF_ST4 ", 0x1040d8},
84 {"QM_DFX_FF_ST5 ", 0x1040dc},
85 {"QM_DFX_FF_ST6 ", 0x1040e0},
86 {"QM_IN_IDLE_ST ", 0x1040e4},
87 {"QM_CACHE_CTL ", 0x100050},
88 {"QM_TIMEOUT_CFG ", 0x100070},
89 {"QM_DB_TIMEOUT_CFG ", 0x100074},
90 {"QM_FLR_PENDING_TIME_CFG ", 0x100078},
91 {"QM_ARUSR_MCFG1 ", 0x100088},
92 {"QM_AWUSR_MCFG1 ", 0x100098},
93 {"QM_AXI_M_CFG_ENABLE ", 0x1000B0},
94 {"QM_RAS_CE_THRESHOLD ", 0x1000F8},
95 {"QM_AXI_TIMEOUT_CTRL ", 0x100120},
96 {"QM_AXI_TIMEOUT_STATUS ", 0x100124},
97 {"QM_CQE_AGGR_TIMEOUT_CTRL ", 0x100144},
98 {"ACC_RAS_MSI_INT_SEL ", 0x1040fc},
99 {"QM_CQE_OUT ", 0x104100},
100 {"QM_EQE_OUT ", 0x104104},
101 {"QM_AEQE_OUT ", 0x104108},
102 {"QM_DB_INFO0 ", 0x104180},
103 {"QM_DB_INFO1 ", 0x104184},
104 {"QM_AM_CTRL_GLOBAL ", 0x300000},
105 {"QM_AM_CURR_PORT_STS ", 0x300100},
106 {"QM_AM_CURR_TRANS_RETURN ", 0x300150},
107 {"QM_AM_CURR_RD_MAX_TXID ", 0x300154},
108 {"QM_AM_CURR_WR_MAX_TXID ", 0x300158},
109 {"QM_AM_ALARM_RRESP ", 0x300180},
110 {"QM_AM_ALARM_BRESP ", 0x300184},
111};
112
113static const struct debugfs_reg32 qm_vf_dfx_regs[] = {
114 {"QM_DFX_FUNS_ACTIVE_ST ", 0x200},
115};
116
117/* define the QM's dfx regs region and region length */
118static struct dfx_diff_registers qm_diff_regs[] = {
119 {
120 .reg_offset = QM_DFX_BASE,
121 .reg_len = QM_DFX_BASE_LEN,
122 }, {
123 .reg_offset = QM_DFX_STATE1,
124 .reg_len = QM_DFX_STATE1_LEN,
125 }, {
126 .reg_offset = QM_DFX_STATE2,
127 .reg_len = QM_DFX_STATE2_LEN,
128 }, {
129 .reg_offset = QM_DFX_COMMON,
130 .reg_len = QM_DFX_COMMON_LEN,
131 },
132};
133
134static struct hisi_qm *file_to_qm(struct debugfs_file *file)
135{
136 struct qm_debug *debug = file->debug;
137
138 return container_of(debug, struct hisi_qm, debug);
139}
140
141static ssize_t qm_cmd_read(struct file *filp, char __user *buffer,
142 size_t count, loff_t *pos)
143{
144 char buf[QM_DBG_READ_LEN];
145 int len;
146
147 len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n",
148 "Please echo help to cmd to get help information");
149
150 return simple_read_from_buffer(buffer, count, pos, buf, len);
151}
152
153static void dump_show(struct hisi_qm *qm, void *info,
154 unsigned int info_size, const char *info_name)
155{
156 struct device *dev = &qm->pdev->dev;
157 u8 *info_curr = info;
158 u32 i;
159#define BYTE_PER_DW 4
160
161 dev_info(dev, "%s DUMP\n", info_name);
162 for (i = 0; i < info_size; i += BYTE_PER_DW, info_curr += BYTE_PER_DW) {
163 pr_info("DW%u: %02X%02X %02X%02X\n", i / BYTE_PER_DW,
164 *(info_curr + 3), *(info_curr + 2), *(info_curr + 1), *(info_curr));
165 }
166}
167
168static int qm_sqc_dump(struct hisi_qm *qm, char *s, const char *name)
169{
170 struct device *dev = &qm->pdev->dev;
171 struct qm_sqc sqc;
172 u32 qp_id;
173 int ret;
174
175 if (!s)
176 return -EINVAL;
177
178 ret = kstrtou32(s, 0, &qp_id);
179 if (ret || qp_id >= qm->qp_num) {
180 dev_err(dev, "Please input qp num (0-%u)", qm->qp_num - 1);
181 return -EINVAL;
182 }
183
184 ret = qm_set_and_get_xqc(qm, QM_MB_CMD_SQC, &sqc, qp_id, 1);
185 if (!ret) {
186 sqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
187 sqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
188 dump_show(qm, &sqc, sizeof(struct qm_sqc), name);
189
190 return 0;
191 }
192
193 down_read(&qm->qps_lock);
194 if (qm->sqc) {
195 memcpy(&sqc, qm->sqc + qp_id, sizeof(struct qm_sqc));
196 sqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
197 sqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
198 dump_show(qm, &sqc, sizeof(struct qm_sqc), "SOFT SQC");
199 }
200 up_read(&qm->qps_lock);
201
202 return 0;
203}
204
205static int qm_cqc_dump(struct hisi_qm *qm, char *s, const char *name)
206{
207 struct device *dev = &qm->pdev->dev;
208 struct qm_cqc cqc;
209 u32 qp_id;
210 int ret;
211
212 if (!s)
213 return -EINVAL;
214
215 ret = kstrtou32(s, 0, &qp_id);
216 if (ret || qp_id >= qm->qp_num) {
217 dev_err(dev, "Please input qp num (0-%u)", qm->qp_num - 1);
218 return -EINVAL;
219 }
220
221 ret = qm_set_and_get_xqc(qm, QM_MB_CMD_CQC, &cqc, qp_id, 1);
222 if (!ret) {
223 cqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
224 cqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
225 dump_show(qm, &cqc, sizeof(struct qm_cqc), name);
226
227 return 0;
228 }
229
230 down_read(&qm->qps_lock);
231 if (qm->cqc) {
232 memcpy(&cqc, qm->cqc + qp_id, sizeof(struct qm_cqc));
233 cqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
234 cqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
235 dump_show(qm, &cqc, sizeof(struct qm_cqc), "SOFT CQC");
236 }
237 up_read(&qm->qps_lock);
238
239 return 0;
240}
241
242static int qm_eqc_aeqc_dump(struct hisi_qm *qm, char *s, const char *name)
243{
244 struct device *dev = &qm->pdev->dev;
245 struct qm_aeqc aeqc;
246 struct qm_eqc eqc;
247 size_t size;
248 void *xeqc;
249 int ret;
250 u8 cmd;
251
252 if (strsep(&s, " ")) {
253 dev_err(dev, "Please do not input extra characters!\n");
254 return -EINVAL;
255 }
256
257 if (!strcmp(name, "EQC")) {
258 cmd = QM_MB_CMD_EQC;
259 size = sizeof(struct qm_eqc);
260 xeqc = &eqc;
261 } else {
262 cmd = QM_MB_CMD_AEQC;
263 size = sizeof(struct qm_aeqc);
264 xeqc = &aeqc;
265 }
266
267 ret = qm_set_and_get_xqc(qm, cmd, xeqc, 0, 1);
268 if (ret)
269 return ret;
270
271 aeqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
272 aeqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
273 eqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK);
274 eqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK);
275 dump_show(qm, xeqc, size, name);
276
277 return ret;
278}
279
280static int q_dump_param_parse(struct hisi_qm *qm, char *s,
281 u32 *e_id, u32 *q_id, u16 q_depth)
282{
283 struct device *dev = &qm->pdev->dev;
284 unsigned int qp_num = qm->qp_num;
285 char *presult;
286 int ret;
287
288 presult = strsep(&s, " ");
289 if (!presult) {
290 dev_err(dev, "Please input qp number!\n");
291 return -EINVAL;
292 }
293
294 ret = kstrtou32(presult, 0, q_id);
295 if (ret || *q_id >= qp_num) {
296 dev_err(dev, "Please input qp num (0-%u)", qp_num - 1);
297 return -EINVAL;
298 }
299
300 presult = strsep(&s, " ");
301 if (!presult) {
302 dev_err(dev, "Please input sqe number!\n");
303 return -EINVAL;
304 }
305
306 ret = kstrtou32(presult, 0, e_id);
307 if (ret || *e_id >= q_depth) {
308 dev_err(dev, "Please input sqe num (0-%d)", q_depth - 1);
309 return -EINVAL;
310 }
311
312 if (strsep(&s, " ")) {
313 dev_err(dev, "Please do not input extra characters!\n");
314 return -EINVAL;
315 }
316
317 return 0;
318}
319
320static int qm_sq_dump(struct hisi_qm *qm, char *s, const char *name)
321{
322 u16 sq_depth = qm->qp_array->sq_depth;
323 struct hisi_qp *qp;
324 u32 qp_id, sqe_id;
325 void *sqe;
326 int ret;
327
328 ret = q_dump_param_parse(qm, s, &sqe_id, &qp_id, sq_depth);
329 if (ret)
330 return ret;
331
332 sqe = kzalloc(qm->sqe_size, GFP_KERNEL);
333 if (!sqe)
334 return -ENOMEM;
335
336 qp = &qm->qp_array[qp_id];
337 memcpy(sqe, qp->sqe + sqe_id * qm->sqe_size, qm->sqe_size);
338 memset(sqe + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK,
339 qm->debug.sqe_mask_len);
340
341 dump_show(qm, sqe, qm->sqe_size, name);
342
343 kfree(sqe);
344
345 return 0;
346}
347
348static int qm_cq_dump(struct hisi_qm *qm, char *s, const char *name)
349{
350 struct qm_cqe *cqe_curr;
351 struct hisi_qp *qp;
352 u32 qp_id, cqe_id;
353 int ret;
354
355 ret = q_dump_param_parse(qm, s, &cqe_id, &qp_id, qm->qp_array->cq_depth);
356 if (ret)
357 return ret;
358
359 qp = &qm->qp_array[qp_id];
360 cqe_curr = qp->cqe + cqe_id;
361 dump_show(qm, cqe_curr, sizeof(struct qm_cqe), name);
362
363 return 0;
364}
365
366static int qm_eq_aeq_dump(struct hisi_qm *qm, char *s, const char *name)
367{
368 struct device *dev = &qm->pdev->dev;
369 u16 xeq_depth;
370 size_t size;
371 void *xeqe;
372 u32 xeqe_id;
373 int ret;
374
375 if (!s)
376 return -EINVAL;
377
378 ret = kstrtou32(s, 0, &xeqe_id);
379 if (ret)
380 return -EINVAL;
381
382 if (!strcmp(name, "EQE")) {
383 xeq_depth = qm->eq_depth;
384 size = sizeof(struct qm_eqe);
385 } else {
386 xeq_depth = qm->aeq_depth;
387 size = sizeof(struct qm_aeqe);
388 }
389
390 if (xeqe_id >= xeq_depth) {
391 dev_err(dev, "Please input eqe or aeqe num (0-%d)", xeq_depth - 1);
392 return -EINVAL;
393 }
394
395 down_read(&qm->qps_lock);
396
397 if (qm->eqe && !strcmp(name, "EQE")) {
398 xeqe = qm->eqe + xeqe_id;
399 } else if (qm->aeqe && !strcmp(name, "AEQE")) {
400 xeqe = qm->aeqe + xeqe_id;
401 } else {
402 ret = -EINVAL;
403 goto err_unlock;
404 }
405
406 dump_show(qm, xeqe, size, name);
407
408err_unlock:
409 up_read(&qm->qps_lock);
410 return ret;
411}
412
413static int qm_dbg_help(struct hisi_qm *qm, char *s)
414{
415 struct device *dev = &qm->pdev->dev;
416
417 if (strsep(&s, " ")) {
418 dev_err(dev, "Please do not input extra characters!\n");
419 return -EINVAL;
420 }
421
422 dev_info(dev, "available commands:\n");
423 dev_info(dev, "sqc <num>\n");
424 dev_info(dev, "cqc <num>\n");
425 dev_info(dev, "eqc\n");
426 dev_info(dev, "aeqc\n");
427 dev_info(dev, "sq <num> <e>\n");
428 dev_info(dev, "cq <num> <e>\n");
429 dev_info(dev, "eq <e>\n");
430 dev_info(dev, "aeq <e>\n");
431
432 return 0;
433}
434
435static const struct qm_cmd_dump_item qm_cmd_dump_table[] = {
436 {
437 .cmd = "sqc",
438 .info_name = "SQC",
439 .dump_fn = qm_sqc_dump,
440 }, {
441 .cmd = "cqc",
442 .info_name = "CQC",
443 .dump_fn = qm_cqc_dump,
444 }, {
445 .cmd = "eqc",
446 .info_name = "EQC",
447 .dump_fn = qm_eqc_aeqc_dump,
448 }, {
449 .cmd = "aeqc",
450 .info_name = "AEQC",
451 .dump_fn = qm_eqc_aeqc_dump,
452 }, {
453 .cmd = "sq",
454 .info_name = "SQE",
455 .dump_fn = qm_sq_dump,
456 }, {
457 .cmd = "cq",
458 .info_name = "CQE",
459 .dump_fn = qm_cq_dump,
460 }, {
461 .cmd = "eq",
462 .info_name = "EQE",
463 .dump_fn = qm_eq_aeq_dump,
464 }, {
465 .cmd = "aeq",
466 .info_name = "AEQE",
467 .dump_fn = qm_eq_aeq_dump,
468 },
469};
470
471static int qm_cmd_write_dump(struct hisi_qm *qm, const char *cmd_buf)
472{
473 struct device *dev = &qm->pdev->dev;
474 char *presult, *s, *s_tmp;
475 int table_size, i, ret;
476
477 s = kstrdup(cmd_buf, GFP_KERNEL);
478 if (!s)
479 return -ENOMEM;
480
481 s_tmp = s;
482 presult = strsep(&s, " ");
483 if (!presult) {
484 ret = -EINVAL;
485 goto err_buffer_free;
486 }
487
488 if (!strcmp(presult, "help")) {
489 ret = qm_dbg_help(qm, s);
490 goto err_buffer_free;
491 }
492
493 table_size = ARRAY_SIZE(qm_cmd_dump_table);
494 for (i = 0; i < table_size; i++) {
495 if (!strcmp(presult, qm_cmd_dump_table[i].cmd)) {
496 ret = qm_cmd_dump_table[i].dump_fn(qm, s,
497 qm_cmd_dump_table[i].info_name);
498 break;
499 }
500 }
501
502 if (i == table_size) {
503 dev_info(dev, "Please echo help\n");
504 ret = -EINVAL;
505 }
506
507err_buffer_free:
508 kfree(s_tmp);
509
510 return ret;
511}
512
513static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer,
514 size_t count, loff_t *pos)
515{
516 struct hisi_qm *qm = filp->private_data;
517 char *cmd_buf, *cmd_buf_tmp;
518 int ret;
519
520 if (*pos)
521 return 0;
522
523 ret = hisi_qm_get_dfx_access(qm);
524 if (ret)
525 return ret;
526
527 /* Judge if the instance is being reset. */
528 if (unlikely(atomic_read(&qm->status.flags) == QM_STOP)) {
529 ret = 0;
530 goto put_dfx_access;
531 }
532
533 if (count > QM_DBG_WRITE_LEN) {
534 ret = -ENOSPC;
535 goto put_dfx_access;
536 }
537
538 cmd_buf = memdup_user_nul(buffer, count);
539 if (IS_ERR(cmd_buf)) {
540 ret = PTR_ERR(cmd_buf);
541 goto put_dfx_access;
542 }
543
544 cmd_buf_tmp = strchr(cmd_buf, '\n');
545 if (cmd_buf_tmp) {
546 *cmd_buf_tmp = '\0';
547 count = cmd_buf_tmp - cmd_buf + 1;
548 }
549
550 ret = qm_cmd_write_dump(qm, cmd_buf);
551 if (ret) {
552 kfree(cmd_buf);
553 goto put_dfx_access;
554 }
555
556 kfree(cmd_buf);
557
558 ret = count;
559
560put_dfx_access:
561 hisi_qm_put_dfx_access(qm);
562 return ret;
563}
564
565static const struct file_operations qm_cmd_fops = {
566 .owner = THIS_MODULE,
567 .open = simple_open,
568 .read = qm_cmd_read,
569 .write = qm_cmd_write,
570};
571
572/**
573 * hisi_qm_regs_dump() - Dump registers's value.
574 * @s: debugfs file handle.
575 * @regset: accelerator registers information.
576 *
577 * Dump accelerator registers.
578 */
579void hisi_qm_regs_dump(struct seq_file *s, struct debugfs_regset32 *regset)
580{
581 struct pci_dev *pdev = to_pci_dev(regset->dev);
582 struct hisi_qm *qm = pci_get_drvdata(pdev);
583 const struct debugfs_reg32 *regs = regset->regs;
584 int regs_len = regset->nregs;
585 int i, ret;
586 u32 val;
587
588 ret = hisi_qm_get_dfx_access(qm);
589 if (ret)
590 return;
591
592 for (i = 0; i < regs_len; i++) {
593 val = readl(regset->base + regs[i].offset);
594 seq_printf(s, "%s= 0x%08x\n", regs[i].name, val);
595 }
596
597 hisi_qm_put_dfx_access(qm);
598}
599EXPORT_SYMBOL_GPL(hisi_qm_regs_dump);
600
601static int qm_regs_show(struct seq_file *s, void *unused)
602{
603 struct hisi_qm *qm = s->private;
604 struct debugfs_regset32 regset;
605
606 if (qm->fun_type == QM_HW_PF) {
607 regset.regs = qm_dfx_regs;
608 regset.nregs = ARRAY_SIZE(qm_dfx_regs);
609 } else {
610 regset.regs = qm_vf_dfx_regs;
611 regset.nregs = ARRAY_SIZE(qm_vf_dfx_regs);
612 }
613
614 regset.base = qm->io_base;
615 regset.dev = &qm->pdev->dev;
616
617 hisi_qm_regs_dump(s, &regset);
618
619 return 0;
620}
621
622DEFINE_SHOW_ATTRIBUTE(qm_regs);
623
624static u32 current_q_read(struct hisi_qm *qm)
625{
626 return readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) >> QM_DFX_QN_SHIFT;
627}
628
629static int current_q_write(struct hisi_qm *qm, u32 val)
630{
631 u32 tmp;
632
633 if (val >= qm->debug.curr_qm_qp_num)
634 return -EINVAL;
635
636 tmp = val << QM_DFX_QN_SHIFT |
637 (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_FUN_MASK);
638 writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
639
640 tmp = val << QM_DFX_QN_SHIFT |
641 (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_FUN_MASK);
642 writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
643
644 return 0;
645}
646
647static u32 clear_enable_read(struct hisi_qm *qm)
648{
649 return readl(qm->io_base + QM_DFX_CNT_CLR_CE);
650}
651
652/* rd_clr_ctrl 1 enable read clear, otherwise 0 disable it */
653static int clear_enable_write(struct hisi_qm *qm, u32 rd_clr_ctrl)
654{
655 if (rd_clr_ctrl > 1)
656 return -EINVAL;
657
658 writel(rd_clr_ctrl, qm->io_base + QM_DFX_CNT_CLR_CE);
659
660 return 0;
661}
662
663static u32 current_qm_read(struct hisi_qm *qm)
664{
665 return readl(qm->io_base + QM_DFX_MB_CNT_VF);
666}
667
668static int qm_get_vf_qp_num(struct hisi_qm *qm, u32 fun_num)
669{
670 u32 remain_q_num, vfq_num;
671 u32 num_vfs = qm->vfs_num;
672
673 vfq_num = (qm->ctrl_qp_num - qm->qp_num) / num_vfs;
674 if (vfq_num >= qm->max_qp_num)
675 return qm->max_qp_num;
676
677 remain_q_num = (qm->ctrl_qp_num - qm->qp_num) % num_vfs;
678 if (vfq_num + remain_q_num <= qm->max_qp_num)
679 return fun_num == num_vfs ? vfq_num + remain_q_num : vfq_num;
680
681 /*
682 * if vfq_num + remain_q_num > max_qp_num, the last VFs,
683 * each with one more queue.
684 */
685 return fun_num + remain_q_num > num_vfs ? vfq_num + 1 : vfq_num;
686}
687
688static int current_qm_write(struct hisi_qm *qm, u32 val)
689{
690 u32 tmp;
691
692 if (val > qm->vfs_num)
693 return -EINVAL;
694
695 /* According PF or VF Dev ID to calculation curr_qm_qp_num and store */
696 if (!val)
697 qm->debug.curr_qm_qp_num = qm->qp_num;
698 else
699 qm->debug.curr_qm_qp_num = qm_get_vf_qp_num(qm, val);
700
701 writel(val, qm->io_base + QM_DFX_MB_CNT_VF);
702 writel(val, qm->io_base + QM_DFX_DB_CNT_VF);
703
704 tmp = val |
705 (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_Q_MASK);
706 writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
707
708 tmp = val |
709 (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_Q_MASK);
710 writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
711
712 return 0;
713}
714
715static ssize_t qm_debug_read(struct file *filp, char __user *buf,
716 size_t count, loff_t *pos)
717{
718 struct debugfs_file *file = filp->private_data;
719 enum qm_debug_file index = file->index;
720 struct hisi_qm *qm = file_to_qm(file);
721 char tbuf[QM_DBG_TMP_BUF_LEN];
722 u32 val;
723 int ret;
724
725 ret = hisi_qm_get_dfx_access(qm);
726 if (ret)
727 return ret;
728
729 mutex_lock(&file->lock);
730 switch (index) {
731 case CURRENT_QM:
732 val = current_qm_read(qm);
733 break;
734 case CURRENT_Q:
735 val = current_q_read(qm);
736 break;
737 case CLEAR_ENABLE:
738 val = clear_enable_read(qm);
739 break;
740 default:
741 goto err_input;
742 }
743 mutex_unlock(&file->lock);
744
745 hisi_qm_put_dfx_access(qm);
746 ret = scnprintf(tbuf, QM_DBG_TMP_BUF_LEN, "%u\n", val);
747 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
748
749err_input:
750 mutex_unlock(&file->lock);
751 hisi_qm_put_dfx_access(qm);
752 return -EINVAL;
753}
754
755static ssize_t qm_debug_write(struct file *filp, const char __user *buf,
756 size_t count, loff_t *pos)
757{
758 struct debugfs_file *file = filp->private_data;
759 enum qm_debug_file index = file->index;
760 struct hisi_qm *qm = file_to_qm(file);
761 unsigned long val;
762 char tbuf[QM_DBG_TMP_BUF_LEN];
763 int len, ret;
764
765 if (*pos != 0)
766 return 0;
767
768 if (count >= QM_DBG_TMP_BUF_LEN)
769 return -ENOSPC;
770
771 len = simple_write_to_buffer(tbuf, QM_DBG_TMP_BUF_LEN - 1, pos, buf,
772 count);
773 if (len < 0)
774 return len;
775
776 tbuf[len] = '\0';
777 if (kstrtoul(tbuf, 0, &val))
778 return -EFAULT;
779
780 ret = hisi_qm_get_dfx_access(qm);
781 if (ret)
782 return ret;
783
784 mutex_lock(&file->lock);
785 switch (index) {
786 case CURRENT_QM:
787 ret = current_qm_write(qm, val);
788 break;
789 case CURRENT_Q:
790 ret = current_q_write(qm, val);
791 break;
792 case CLEAR_ENABLE:
793 ret = clear_enable_write(qm, val);
794 break;
795 default:
796 ret = -EINVAL;
797 }
798 mutex_unlock(&file->lock);
799
800 hisi_qm_put_dfx_access(qm);
801
802 if (ret)
803 return ret;
804
805 return count;
806}
807
808static const struct file_operations qm_debug_fops = {
809 .owner = THIS_MODULE,
810 .open = simple_open,
811 .read = qm_debug_read,
812 .write = qm_debug_write,
813};
814
815static void dfx_regs_uninit(struct hisi_qm *qm,
816 struct dfx_diff_registers *dregs, int reg_len)
817{
818 int i;
819
820 if (!dregs)
821 return;
822
823 /* Setting the pointer is NULL to prevent double free */
824 for (i = 0; i < reg_len; i++) {
825 if (!dregs[i].regs)
826 continue;
827
828 kfree(dregs[i].regs);
829 dregs[i].regs = NULL;
830 }
831 kfree(dregs);
832}
833
834static struct dfx_diff_registers *dfx_regs_init(struct hisi_qm *qm,
835 const struct dfx_diff_registers *cregs, u32 reg_len)
836{
837 struct dfx_diff_registers *diff_regs;
838 u32 j, base_offset;
839 int i;
840
841 diff_regs = kzalloc_objs(*diff_regs, reg_len);
842 if (!diff_regs)
843 return ERR_PTR(-ENOMEM);
844
845 for (i = 0; i < reg_len; i++) {
846 if (!cregs[i].reg_len)
847 continue;
848
849 diff_regs[i].reg_offset = cregs[i].reg_offset;
850 diff_regs[i].reg_len = cregs[i].reg_len;
851 diff_regs[i].regs = kcalloc(QM_DFX_REGS_LEN, cregs[i].reg_len,
852 GFP_KERNEL);
853 if (!diff_regs[i].regs)
854 goto alloc_error;
855
856 for (j = 0; j < diff_regs[i].reg_len; j++) {
857 base_offset = diff_regs[i].reg_offset +
858 j * QM_DFX_REGS_LEN;
859 diff_regs[i].regs[j] = readl(qm->io_base + base_offset);
860 }
861 }
862
863 return diff_regs;
864
865alloc_error:
866 while (i > 0) {
867 i--;
868 kfree(diff_regs[i].regs);
869 }
870 kfree(diff_regs);
871 return ERR_PTR(-ENOMEM);
872}
873
874static int qm_diff_regs_init(struct hisi_qm *qm,
875 struct dfx_diff_registers *dregs, u32 reg_len)
876{
877 int ret;
878
879 qm->debug.qm_diff_regs = dfx_regs_init(qm, qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
880 if (IS_ERR(qm->debug.qm_diff_regs)) {
881 ret = PTR_ERR(qm->debug.qm_diff_regs);
882 qm->debug.qm_diff_regs = NULL;
883 return ret;
884 }
885
886 qm->debug.acc_diff_regs = dfx_regs_init(qm, dregs, reg_len);
887 if (IS_ERR(qm->debug.acc_diff_regs)) {
888 dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
889 ret = PTR_ERR(qm->debug.acc_diff_regs);
890 qm->debug.acc_diff_regs = NULL;
891 qm->debug.qm_diff_regs = NULL;
892 return ret;
893 }
894
895 return 0;
896}
897
898static void qm_last_regs_uninit(struct hisi_qm *qm)
899{
900 struct qm_debug *debug = &qm->debug;
901
902 if (qm->fun_type == QM_HW_VF || !debug->qm_last_words)
903 return;
904
905 kfree(debug->qm_last_words);
906 debug->qm_last_words = NULL;
907}
908
909static int qm_last_regs_init(struct hisi_qm *qm)
910{
911 int dfx_regs_num = ARRAY_SIZE(qm_dfx_regs);
912 struct qm_debug *debug = &qm->debug;
913 int i;
914
915 if (qm->fun_type == QM_HW_VF)
916 return 0;
917
918 debug->qm_last_words = kcalloc(dfx_regs_num, sizeof(unsigned int), GFP_KERNEL);
919 if (!debug->qm_last_words)
920 return -ENOMEM;
921
922 for (i = 0; i < dfx_regs_num; i++) {
923 debug->qm_last_words[i] = readl_relaxed(qm->io_base +
924 qm_dfx_regs[i].offset);
925 }
926
927 return 0;
928}
929
930static void qm_diff_regs_uninit(struct hisi_qm *qm, u32 reg_len)
931{
932 dfx_regs_uninit(qm, qm->debug.acc_diff_regs, reg_len);
933 qm->debug.acc_diff_regs = NULL;
934 dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
935 qm->debug.qm_diff_regs = NULL;
936}
937
938/**
939 * hisi_qm_regs_debugfs_init() - Allocate memory for registers.
940 * @qm: device qm handle.
941 * @dregs: diff registers handle.
942 * @reg_len: diff registers region length.
943 */
944int hisi_qm_regs_debugfs_init(struct hisi_qm *qm,
945 struct dfx_diff_registers *dregs, u32 reg_len)
946{
947 int ret;
948
949 if (!qm || !dregs)
950 return -EINVAL;
951
952 if (qm->fun_type != QM_HW_PF)
953 return 0;
954
955 ret = qm_last_regs_init(qm);
956 if (ret) {
957 dev_info(&qm->pdev->dev, "failed to init qm words memory!\n");
958 return ret;
959 }
960
961 ret = qm_diff_regs_init(qm, dregs, reg_len);
962 if (ret) {
963 qm_last_regs_uninit(qm);
964 return ret;
965 }
966
967 return 0;
968}
969EXPORT_SYMBOL_GPL(hisi_qm_regs_debugfs_init);
970
971/**
972 * hisi_qm_regs_debugfs_uninit() - Free memory for registers.
973 * @qm: device qm handle.
974 * @reg_len: diff registers region length.
975 */
976void hisi_qm_regs_debugfs_uninit(struct hisi_qm *qm, u32 reg_len)
977{
978 if (!qm || qm->fun_type != QM_HW_PF)
979 return;
980
981 qm_diff_regs_uninit(qm, reg_len);
982 qm_last_regs_uninit(qm);
983}
984EXPORT_SYMBOL_GPL(hisi_qm_regs_debugfs_uninit);
985
986/**
987 * hisi_qm_acc_diff_regs_dump() - Dump registers's value.
988 * @qm: device qm handle.
989 * @s: Debugfs file handle.
990 * @dregs: diff registers handle.
991 * @regs_len: diff registers region length.
992 */
993void hisi_qm_acc_diff_regs_dump(struct hisi_qm *qm, struct seq_file *s,
994 struct dfx_diff_registers *dregs, u32 regs_len)
995{
996 u32 j, val, base_offset;
997 int i, ret;
998
999 if (!qm || !s || !dregs)
1000 return;
1001
1002 ret = hisi_qm_get_dfx_access(qm);
1003 if (ret)
1004 return;
1005
1006 down_read(&qm->qps_lock);
1007 for (i = 0; i < regs_len; i++) {
1008 if (!dregs[i].reg_len)
1009 continue;
1010
1011 for (j = 0; j < dregs[i].reg_len; j++) {
1012 base_offset = dregs[i].reg_offset + j * QM_DFX_REGS_LEN;
1013 val = readl(qm->io_base + base_offset);
1014 if (val != dregs[i].regs[j])
1015 seq_printf(s, "0x%08x = 0x%08x ---> 0x%08x\n",
1016 base_offset, dregs[i].regs[j], val);
1017 }
1018 }
1019 up_read(&qm->qps_lock);
1020
1021 hisi_qm_put_dfx_access(qm);
1022}
1023EXPORT_SYMBOL_GPL(hisi_qm_acc_diff_regs_dump);
1024
1025void hisi_qm_show_last_dfx_regs(struct hisi_qm *qm)
1026{
1027 struct qm_debug *debug = &qm->debug;
1028 struct pci_dev *pdev = qm->pdev;
1029 u32 val;
1030 int i;
1031
1032 if (qm->fun_type == QM_HW_VF || !debug->qm_last_words)
1033 return;
1034
1035 for (i = 0; i < ARRAY_SIZE(qm_dfx_regs); i++) {
1036 val = readl_relaxed(qm->io_base + qm_dfx_regs[i].offset);
1037 if (debug->qm_last_words[i] != val)
1038 pci_info(pdev, "%s \t= 0x%08x => 0x%08x\n",
1039 qm_dfx_regs[i].name, debug->qm_last_words[i], val);
1040 }
1041}
1042
1043static int qm_usage_percent(struct hisi_qm *qm, int chan_num)
1044{
1045 u32 val, used_bw, total_bw;
1046
1047 val = readl(qm->io_base + QM_CHANNEL_USAGE_OFFSET +
1048 chan_num * QM_CHANNEL_ADDR_INTRVL);
1049 used_bw = lower_16_bits(val);
1050 total_bw = upper_16_bits(val);
1051 if (!total_bw)
1052 return -EIO;
1053
1054 if (total_bw <= used_bw)
1055 return QM_MAX_DEV_USAGE;
1056
1057 return (used_bw * QM_DEV_USAGE_RATE) / total_bw;
1058}
1059
1060static int qm_usage_show(struct seq_file *s, void *unused)
1061{
1062 struct hisi_qm *qm = s->private;
1063 bool dev_is_active = true;
1064 int i, ret;
1065
1066 /* If device is in suspended, usage is 0. */
1067 ret = hisi_qm_get_dfx_access(qm);
1068 if (ret == -EAGAIN) {
1069 dev_is_active = false;
1070 } else if (ret) {
1071 dev_err(&qm->pdev->dev, "failed to get dfx access for usage_show!\n");
1072 return ret;
1073 }
1074
1075 ret = 0;
1076 for (i = 0; i < qm->channel_data.channel_num; i++) {
1077 if (dev_is_active) {
1078 ret = qm_usage_percent(qm, i);
1079 if (ret < 0) {
1080 hisi_qm_put_dfx_access(qm);
1081 return ret;
1082 }
1083 }
1084 seq_printf(s, "%s: %d\n", qm->channel_data.channel_name[i], ret);
1085 }
1086
1087 if (dev_is_active)
1088 hisi_qm_put_dfx_access(qm);
1089
1090 return 0;
1091}
1092DEFINE_SHOW_ATTRIBUTE(qm_usage);
1093
1094static int qm_diff_regs_show(struct seq_file *s, void *unused)
1095{
1096 struct hisi_qm *qm = s->private;
1097
1098 hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.qm_diff_regs,
1099 ARRAY_SIZE(qm_diff_regs));
1100
1101 return 0;
1102}
1103DEFINE_SHOW_ATTRIBUTE(qm_diff_regs);
1104
1105static int qm_state_show(struct seq_file *s, void *unused)
1106{
1107 struct hisi_qm *qm = s->private;
1108 u32 val;
1109 int ret;
1110
1111 /* If device is in suspended, directly return the idle state. */
1112 ret = hisi_qm_get_dfx_access(qm);
1113 if (!ret) {
1114 val = readl(qm->io_base + QM_IN_IDLE_ST_REG);
1115 hisi_qm_put_dfx_access(qm);
1116 } else if (ret == -EAGAIN) {
1117 val = QM_IN_IDLE_STATE;
1118 } else {
1119 return ret;
1120 }
1121
1122 seq_printf(s, "%u\n", val);
1123
1124 return 0;
1125}
1126
1127DEFINE_SHOW_ATTRIBUTE(qm_state);
1128
1129static ssize_t qm_status_read(struct file *filp, char __user *buffer,
1130 size_t count, loff_t *pos)
1131{
1132 struct hisi_qm *qm = filp->private_data;
1133 char buf[QM_DBG_READ_LEN];
1134 int val, len;
1135
1136 val = atomic_read(&qm->status.flags);
1137 len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n", qm_s[val]);
1138
1139 return simple_read_from_buffer(buffer, count, pos, buf, len);
1140}
1141
1142static const struct file_operations qm_status_fops = {
1143 .owner = THIS_MODULE,
1144 .open = simple_open,
1145 .read = qm_status_read,
1146};
1147
1148static void qm_create_debugfs_file(struct hisi_qm *qm, struct dentry *dir,
1149 enum qm_debug_file index)
1150{
1151 struct debugfs_file *file = qm->debug.files + index;
1152
1153 file->index = index;
1154 mutex_init(&file->lock);
1155 file->debug = &qm->debug;
1156
1157 debugfs_create_file(qm_debug_file_name[index], 0600, dir, file,
1158 &qm_debug_fops);
1159}
1160
1161static int qm_debugfs_atomic64_set(void *data, u64 val)
1162{
1163 if (val)
1164 return -EINVAL;
1165
1166 atomic64_set((atomic64_t *)data, 0);
1167
1168 return 0;
1169}
1170
1171static int qm_debugfs_atomic64_get(void *data, u64 *val)
1172{
1173 *val = atomic64_read((atomic64_t *)data);
1174
1175 return 0;
1176}
1177
1178DEFINE_DEBUGFS_ATTRIBUTE(qm_atomic64_ops, qm_debugfs_atomic64_get,
1179 qm_debugfs_atomic64_set, "%llu\n");
1180
1181/**
1182 * hisi_qm_debug_init() - Initialize qm related debugfs files.
1183 * @qm: The qm for which we want to add debugfs files.
1184 *
1185 * Create qm related debugfs files.
1186 */
1187void hisi_qm_debug_init(struct hisi_qm *qm)
1188{
1189 struct dfx_diff_registers *qm_regs = qm->debug.qm_diff_regs;
1190 struct qm_dev_dfx *dev_dfx = &qm->debug.dev_dfx;
1191 struct qm_dfx *dfx = &qm->debug.dfx;
1192 struct dentry *qm_d;
1193 void *data;
1194 int i;
1195
1196 qm_d = debugfs_create_dir("qm", qm->debug.debug_root);
1197 qm->debug.qm_d = qm_d;
1198
1199 /* only show this in PF */
1200 if (qm->fun_type == QM_HW_PF) {
1201 debugfs_create_file("qm_state", 0444, qm->debug.qm_d,
1202 qm, &qm_state_fops);
1203
1204 qm_create_debugfs_file(qm, qm->debug.debug_root, CURRENT_QM);
1205 for (i = CURRENT_Q; i < DEBUG_FILE_NUM; i++)
1206 qm_create_debugfs_file(qm, qm->debug.qm_d, i);
1207 }
1208
1209 if (qm_regs)
1210 debugfs_create_file("diff_regs", 0444, qm->debug.qm_d,
1211 qm, &qm_diff_regs_fops);
1212
1213 if (qm->ver >= QM_HW_V5)
1214 debugfs_create_file("dev_usage", 0444, qm->debug.debug_root, qm, &qm_usage_fops);
1215
1216 debugfs_create_file("regs", 0444, qm->debug.qm_d, qm, &qm_regs_fops);
1217
1218 debugfs_create_file("cmd", 0600, qm->debug.qm_d, qm, &qm_cmd_fops);
1219
1220 debugfs_create_file("status", 0444, qm->debug.qm_d, qm,
1221 &qm_status_fops);
1222
1223 debugfs_create_u32("dev_state", 0444, qm->debug.qm_d, &dev_dfx->dev_state);
1224 debugfs_create_u32("dev_timeout", 0644, qm->debug.qm_d, &dev_dfx->dev_timeout);
1225
1226 for (i = 0; i < ARRAY_SIZE(qm_dfx_files); i++) {
1227 data = (atomic64_t *)((uintptr_t)dfx + qm_dfx_files[i].offset);
1228 debugfs_create_file(qm_dfx_files[i].name,
1229 0644,
1230 qm_d,
1231 data,
1232 &qm_atomic64_ops);
1233 }
1234
1235 if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps))
1236 hisi_qm_set_algqos_init(qm);
1237}
1238EXPORT_SYMBOL_GPL(hisi_qm_debug_init);
1239
1240/**
1241 * hisi_qm_debug_regs_clear() - clear qm debug related registers.
1242 * @qm: The qm for which we want to clear its debug registers.
1243 */
1244void hisi_qm_debug_regs_clear(struct hisi_qm *qm)
1245{
1246 const struct debugfs_reg32 *regs;
1247 int i;
1248
1249 /* clear current_qm */
1250 writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF);
1251 writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF);
1252
1253 /* clear current_q */
1254 writel(0x0, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
1255 writel(0x0, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
1256
1257 /*
1258 * these registers are reading and clearing, so clear them after
1259 * reading them.
1260 */
1261 writel(0x1, qm->io_base + QM_DFX_CNT_CLR_CE);
1262
1263 regs = qm_dfx_regs;
1264 for (i = 0; i < CNT_CYC_REGS_NUM; i++) {
1265 readl(qm->io_base + regs->offset);
1266 regs++;
1267 }
1268
1269 /* clear clear_enable */
1270 writel(0x0, qm->io_base + QM_DFX_CNT_CLR_CE);
1271}
1272EXPORT_SYMBOL_GPL(hisi_qm_debug_regs_clear);