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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / misc / habanalabs / debugfs.c
blob20413e350343adf2ef841837ed3b8e491231a7df
1 // SPDX-License-Identifier: GPL-2.0
2
3 /*
4 * Copyright 2016-2019 HabanaLabs, Ltd.
5 * All Rights Reserved.
6 */
7
8 #include "habanalabs.h"
9 #include "include/hw_ip/mmu/mmu_general.h"
10
11 #include <linux/pci.h>
12 #include <linux/debugfs.h>
13 #include <linux/uaccess.h>
14
15 #define MMU_ADDR_BUF_SIZE 40
16 #define MMU_ASID_BUF_SIZE 10
17 #define MMU_KBUF_SIZE (MMU_ADDR_BUF_SIZE + MMU_ASID_BUF_SIZE)
18
19 static struct dentry *hl_debug_root;
20
21 static int hl_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr,
22 u8 i2c_reg, u32 *val)
23 {
24 struct armcp_packet pkt;
25 int rc;
26
27 if (hl_device_disabled_or_in_reset(hdev))
28 return -EBUSY;
29
30 memset(&pkt, 0, sizeof(pkt));
31
32 pkt.ctl = cpu_to_le32(ARMCP_PACKET_I2C_RD <<
33 ARMCP_PKT_CTL_OPCODE_SHIFT);
34 pkt.i2c_bus = i2c_bus;
35 pkt.i2c_addr = i2c_addr;
36 pkt.i2c_reg = i2c_reg;
37
38 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
39 HL_DEVICE_TIMEOUT_USEC, (long *) val);
40
41 if (rc)
42 dev_err(hdev->dev, "Failed to read from I2C, error %d\n", rc);
43
44 return rc;
45 }
46
47 static int hl_debugfs_i2c_write(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr,
48 u8 i2c_reg, u32 val)
49 {
50 struct armcp_packet pkt;
51 int rc;
52
53 if (hl_device_disabled_or_in_reset(hdev))
54 return -EBUSY;
55
56 memset(&pkt, 0, sizeof(pkt));
57
58 pkt.ctl = cpu_to_le32(ARMCP_PACKET_I2C_WR <<
59 ARMCP_PKT_CTL_OPCODE_SHIFT);
60 pkt.i2c_bus = i2c_bus;
61 pkt.i2c_addr = i2c_addr;
62 pkt.i2c_reg = i2c_reg;
63 pkt.value = cpu_to_le64(val);
64
65 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
66 HL_DEVICE_TIMEOUT_USEC, NULL);
67
68 if (rc)
69 dev_err(hdev->dev, "Failed to write to I2C, error %d\n", rc);
70
71 return rc;
72 }
73
74 static void hl_debugfs_led_set(struct hl_device *hdev, u8 led, u8 state)
75 {
76 struct armcp_packet pkt;
77 int rc;
78
79 if (hl_device_disabled_or_in_reset(hdev))
80 return;
81
82 memset(&pkt, 0, sizeof(pkt));
83
84 pkt.ctl = cpu_to_le32(ARMCP_PACKET_LED_SET <<
85 ARMCP_PKT_CTL_OPCODE_SHIFT);
86 pkt.led_index = cpu_to_le32(led);
87 pkt.value = cpu_to_le64(state);
88
89 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
90 HL_DEVICE_TIMEOUT_USEC, NULL);
91
92 if (rc)
93 dev_err(hdev->dev, "Failed to set LED %d, error %d\n", led, rc);
94 }
95
96 static int command_buffers_show(struct seq_file *s, void *data)
97 {
98 struct hl_debugfs_entry *entry = s->private;
99 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
100 struct hl_cb *cb;
101 bool first = true;
102
103 spin_lock(&dev_entry->cb_spinlock);
104
105 list_for_each_entry(cb, &dev_entry->cb_list, debugfs_list) {
106 if (first) {
107 first = false;
108 seq_puts(s, "\n");
109 seq_puts(s, " CB ID CTX ID CB size CB RefCnt mmap? CS counter\n");
110 seq_puts(s, "---------------------------------------------------------------\n");
111 }
112 seq_printf(s,
113 " %03d %d 0x%08x %d %d %d\n",
114 cb->id, cb->ctx_id, cb->size,
115 kref_read(&cb->refcount),
116 cb->mmap, cb->cs_cnt);
117 }
118
119 spin_unlock(&dev_entry->cb_spinlock);
120
121 if (!first)
122 seq_puts(s, "\n");
123
124 return 0;
125 }
126
127 static int command_submission_show(struct seq_file *s, void *data)
128 {
129 struct hl_debugfs_entry *entry = s->private;
130 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
131 struct hl_cs *cs;
132 bool first = true;
133
134 spin_lock(&dev_entry->cs_spinlock);
135
136 list_for_each_entry(cs, &dev_entry->cs_list, debugfs_list) {
137 if (first) {
138 first = false;
139 seq_puts(s, "\n");
140 seq_puts(s, " CS ID CTX ASID CS RefCnt Submitted Completed\n");
141 seq_puts(s, "------------------------------------------------------\n");
142 }
143 seq_printf(s,
144 " %llu %d %d %d %d\n",
145 cs->sequence, cs->ctx->asid,
146 kref_read(&cs->refcount),
147 cs->submitted, cs->completed);
148 }
149
150 spin_unlock(&dev_entry->cs_spinlock);
151
152 if (!first)
153 seq_puts(s, "\n");
154
155 return 0;
156 }
157
158 static int command_submission_jobs_show(struct seq_file *s, void *data)
159 {
160 struct hl_debugfs_entry *entry = s->private;
161 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
162 struct hl_cs_job *job;
163 bool first = true;
164
165 spin_lock(&dev_entry->cs_job_spinlock);
166
167 list_for_each_entry(job, &dev_entry->cs_job_list, debugfs_list) {
168 if (first) {
169 first = false;
170 seq_puts(s, "\n");
171 seq_puts(s, " JOB ID CS ID CTX ASID H/W Queue\n");
172 seq_puts(s, "---------------------------------------\n");
173 }
174 if (job->cs)
175 seq_printf(s,
176 " %02d %llu %d %d\n",
177 job->id, job->cs->sequence, job->cs->ctx->asid,
178 job->hw_queue_id);
179 else
180 seq_printf(s,
181 " %02d 0 %d %d\n",
182 job->id, HL_KERNEL_ASID_ID, job->hw_queue_id);
183 }
184
185 spin_unlock(&dev_entry->cs_job_spinlock);
186
187 if (!first)
188 seq_puts(s, "\n");
189
190 return 0;
191 }
192
193 static int userptr_show(struct seq_file *s, void *data)
194 {
195 struct hl_debugfs_entry *entry = s->private;
196 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
197 struct hl_userptr *userptr;
198 char dma_dir[4][30] = {"DMA_BIDIRECTIONAL", "DMA_TO_DEVICE",
199 "DMA_FROM_DEVICE", "DMA_NONE"};
200 bool first = true;
201
202 spin_lock(&dev_entry->userptr_spinlock);
203
204 list_for_each_entry(userptr, &dev_entry->userptr_list, debugfs_list) {
205 if (first) {
206 first = false;
207 seq_puts(s, "\n");
208 seq_puts(s, " user virtual address size dma dir\n");
209 seq_puts(s, "----------------------------------------------------------\n");
210 }
211 seq_printf(s,
212 " 0x%-14llx %-10u %-30s\n",
213 userptr->addr, userptr->size, dma_dir[userptr->dir]);
214 }
215
216 spin_unlock(&dev_entry->userptr_spinlock);
217
218 if (!first)
219 seq_puts(s, "\n");
220
221 return 0;
222 }
223
224 static int vm_show(struct seq_file *s, void *data)
225 {
226 struct hl_debugfs_entry *entry = s->private;
227 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
228 struct hl_ctx *ctx;
229 struct hl_vm *vm;
230 struct hl_vm_hash_node *hnode;
231 struct hl_userptr *userptr;
232 struct hl_vm_phys_pg_pack *phys_pg_pack = NULL;
233 enum vm_type_t *vm_type;
234 bool once = true;
235 u64 j;
236 int i;
237
238 if (!dev_entry->hdev->mmu_enable)
239 return 0;
240
241 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
242
243 list_for_each_entry(ctx, &dev_entry->ctx_mem_hash_list, debugfs_list) {
244 once = false;
245 seq_puts(s, "\n\n----------------------------------------------------");
246 seq_puts(s, "\n----------------------------------------------------\n\n");
247 seq_printf(s, "ctx asid: %u\n", ctx->asid);
248
249 seq_puts(s, "\nmappings:\n\n");
250 seq_puts(s, " virtual address size handle\n");
251 seq_puts(s, "----------------------------------------------------\n");
252 mutex_lock(&ctx->mem_hash_lock);
253 hash_for_each(ctx->mem_hash, i, hnode, node) {
254 vm_type = hnode->ptr;
255
256 if (*vm_type == VM_TYPE_USERPTR) {
257 userptr = hnode->ptr;
258 seq_printf(s,
259 " 0x%-14llx %-10u\n",
260 hnode->vaddr, userptr->size);
261 } else {
262 phys_pg_pack = hnode->ptr;
263 seq_printf(s,
264 " 0x%-14llx %-10llu %-4u\n",
265 hnode->vaddr, phys_pg_pack->total_size,
266 phys_pg_pack->handle);
267 }
268 }
269 mutex_unlock(&ctx->mem_hash_lock);
270
271 vm = &ctx->hdev->vm;
272 spin_lock(&vm->idr_lock);
273
274 if (!idr_is_empty(&vm->phys_pg_pack_handles))
275 seq_puts(s, "\n\nallocations:\n");
276
277 idr_for_each_entry(&vm->phys_pg_pack_handles, phys_pg_pack, i) {
278 if (phys_pg_pack->asid != ctx->asid)
279 continue;
280
281 seq_printf(s, "\nhandle: %u\n", phys_pg_pack->handle);
282 seq_printf(s, "page size: %u\n\n",
283 phys_pg_pack->page_size);
284 seq_puts(s, " physical address\n");
285 seq_puts(s, "---------------------\n");
286 for (j = 0 ; j < phys_pg_pack->npages ; j++) {
287 seq_printf(s, " 0x%-14llx\n",
288 phys_pg_pack->pages[j]);
289 }
290 }
291 spin_unlock(&vm->idr_lock);
292
293 }
294
295 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
296
297 if (!once)
298 seq_puts(s, "\n");
299
300 return 0;
301 }
302
303 /* these inline functions are copied from mmu.c */
304 static inline u64 get_hop0_addr(struct hl_ctx *ctx)
305 {
306 return ctx->hdev->asic_prop.mmu_pgt_addr +
307 (ctx->asid * ctx->hdev->asic_prop.mmu_hop_table_size);
308 }
309
310 static inline u64 get_hopN_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
311 u64 virt_addr, u64 mask, u64 shift)
312 {
313 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
314 ((virt_addr & mask) >> shift);
315 }
316
317 static inline u64 get_hop0_pte_addr(struct hl_ctx *ctx,
318 struct hl_mmu_properties *mmu_specs,
319 u64 hop_addr, u64 vaddr)
320 {
321 return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop0_mask,
322 mmu_specs->hop0_shift);
323 }
324
325 static inline u64 get_hop1_pte_addr(struct hl_ctx *ctx,
326 struct hl_mmu_properties *mmu_specs,
327 u64 hop_addr, u64 vaddr)
328 {
329 return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop1_mask,
330 mmu_specs->hop1_shift);
331 }
332
333 static inline u64 get_hop2_pte_addr(struct hl_ctx *ctx,
334 struct hl_mmu_properties *mmu_specs,
335 u64 hop_addr, u64 vaddr)
336 {
337 return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop2_mask,
338 mmu_specs->hop2_shift);
339 }
340
341 static inline u64 get_hop3_pte_addr(struct hl_ctx *ctx,
342 struct hl_mmu_properties *mmu_specs,
343 u64 hop_addr, u64 vaddr)
344 {
345 return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop3_mask,
346 mmu_specs->hop3_shift);
347 }
348
349 static inline u64 get_hop4_pte_addr(struct hl_ctx *ctx,
350 struct hl_mmu_properties *mmu_specs,
351 u64 hop_addr, u64 vaddr)
352 {
353 return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop4_mask,
354 mmu_specs->hop4_shift);
355 }
356
357 static inline u64 get_next_hop_addr(u64 curr_pte)
358 {
359 if (curr_pte & PAGE_PRESENT_MASK)
360 return curr_pte & HOP_PHYS_ADDR_MASK;
361 else
362 return ULLONG_MAX;
363 }
364
365 static int mmu_show(struct seq_file *s, void *data)
366 {
367 struct hl_debugfs_entry *entry = s->private;
368 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
369 struct hl_device *hdev = dev_entry->hdev;
370 struct asic_fixed_properties *prop = &hdev->asic_prop;
371 struct hl_mmu_properties *mmu_prop;
372 struct hl_ctx *ctx;
373 bool is_dram_addr;
374
375 u64 hop0_addr = 0, hop0_pte_addr = 0, hop0_pte = 0,
376 hop1_addr = 0, hop1_pte_addr = 0, hop1_pte = 0,
377 hop2_addr = 0, hop2_pte_addr = 0, hop2_pte = 0,
378 hop3_addr = 0, hop3_pte_addr = 0, hop3_pte = 0,
379 hop4_addr = 0, hop4_pte_addr = 0, hop4_pte = 0,
380 virt_addr = dev_entry->mmu_addr;
381
382 if (!hdev->mmu_enable)
383 return 0;
384
385 if (dev_entry->mmu_asid == HL_KERNEL_ASID_ID)
386 ctx = hdev->kernel_ctx;
387 else
388 ctx = hdev->compute_ctx;
389
390 if (!ctx) {
391 dev_err(hdev->dev, "no ctx available\n");
392 return 0;
393 }
394
395 is_dram_addr = hl_mem_area_inside_range(virt_addr, prop->dmmu.page_size,
396 prop->va_space_dram_start_address,
397 prop->va_space_dram_end_address);
398
399 mmu_prop = is_dram_addr ? &prop->dmmu : &prop->pmmu;
400
401 mutex_lock(&ctx->mmu_lock);
402
403 /* the following lookup is copied from unmap() in mmu.c */
404
405 hop0_addr = get_hop0_addr(ctx);
406 hop0_pte_addr = get_hop0_pte_addr(ctx, mmu_prop, hop0_addr, virt_addr);
407 hop0_pte = hdev->asic_funcs->read_pte(hdev, hop0_pte_addr);
408 hop1_addr = get_next_hop_addr(hop0_pte);
409
410 if (hop1_addr == ULLONG_MAX)
411 goto not_mapped;
412
413 hop1_pte_addr = get_hop1_pte_addr(ctx, mmu_prop, hop1_addr, virt_addr);
414 hop1_pte = hdev->asic_funcs->read_pte(hdev, hop1_pte_addr);
415 hop2_addr = get_next_hop_addr(hop1_pte);
416
417 if (hop2_addr == ULLONG_MAX)
418 goto not_mapped;
419
420 hop2_pte_addr = get_hop2_pte_addr(ctx, mmu_prop, hop2_addr, virt_addr);
421 hop2_pte = hdev->asic_funcs->read_pte(hdev, hop2_pte_addr);
422 hop3_addr = get_next_hop_addr(hop2_pte);
423
424 if (hop3_addr == ULLONG_MAX)
425 goto not_mapped;
426
427 hop3_pte_addr = get_hop3_pte_addr(ctx, mmu_prop, hop3_addr, virt_addr);
428 hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr);
429
430 if (!(hop3_pte & LAST_MASK)) {
431 hop4_addr = get_next_hop_addr(hop3_pte);
432
433 if (hop4_addr == ULLONG_MAX)
434 goto not_mapped;
435
436 hop4_pte_addr = get_hop4_pte_addr(ctx, mmu_prop, hop4_addr,
437 virt_addr);
438 hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr);
439 if (!(hop4_pte & PAGE_PRESENT_MASK))
440 goto not_mapped;
441 } else {
442 if (!(hop3_pte & PAGE_PRESENT_MASK))
443 goto not_mapped;
444 }
445
446 seq_printf(s, "asid: %u, virt_addr: 0x%llx\n",
447 dev_entry->mmu_asid, dev_entry->mmu_addr);
448
449 seq_printf(s, "hop0_addr: 0x%llx\n", hop0_addr);
450 seq_printf(s, "hop0_pte_addr: 0x%llx\n", hop0_pte_addr);
451 seq_printf(s, "hop0_pte: 0x%llx\n", hop0_pte);
452
453 seq_printf(s, "hop1_addr: 0x%llx\n", hop1_addr);
454 seq_printf(s, "hop1_pte_addr: 0x%llx\n", hop1_pte_addr);
455 seq_printf(s, "hop1_pte: 0x%llx\n", hop1_pte);
456
457 seq_printf(s, "hop2_addr: 0x%llx\n", hop2_addr);
458 seq_printf(s, "hop2_pte_addr: 0x%llx\n", hop2_pte_addr);
459 seq_printf(s, "hop2_pte: 0x%llx\n", hop2_pte);
460
461 seq_printf(s, "hop3_addr: 0x%llx\n", hop3_addr);
462 seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr);
463 seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte);
464
465 if (!(hop3_pte & LAST_MASK)) {
466 seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
467 seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
468 seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
469 }
470
471 goto out;
472
473 not_mapped:
474 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
475 virt_addr);
476 out:
477 mutex_unlock(&ctx->mmu_lock);
478
479 return 0;
480 }
481
482 static ssize_t mmu_write(struct file *file, const char __user *buf,
483 size_t count, loff_t *f_pos)
484 {
485 struct seq_file *s = file->private_data;
486 struct hl_debugfs_entry *entry = s->private;
487 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
488 struct hl_device *hdev = dev_entry->hdev;
489 char kbuf[MMU_KBUF_SIZE];
490 char *c;
491 ssize_t rc;
492
493 if (!hdev->mmu_enable)
494 return count;
495
496 if (count > sizeof(kbuf) - 1)
497 goto err;
498 if (copy_from_user(kbuf, buf, count))
499 goto err;
500 kbuf[count] = 0;
501
502 c = strchr(kbuf, ' ');
503 if (!c)
504 goto err;
505 *c = '\0';
506
507 rc = kstrtouint(kbuf, 10, &dev_entry->mmu_asid);
508 if (rc)
509 goto err;
510
511 if (strncmp(c+1, "0x", 2))
512 goto err;
513 rc = kstrtoull(c+3, 16, &dev_entry->mmu_addr);
514 if (rc)
515 goto err;
516
517 return count;
518
519 err:
520 dev_err(hdev->dev, "usage: echo <asid> <0xaddr> > mmu\n");
521
522 return -EINVAL;
523 }
524
525 static int engines_show(struct seq_file *s, void *data)
526 {
527 struct hl_debugfs_entry *entry = s->private;
528 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
529 struct hl_device *hdev = dev_entry->hdev;
530
531 if (atomic_read(&hdev->in_reset)) {
532 dev_warn_ratelimited(hdev->dev,
533 "Can't check device idle during reset\n");
534 return 0;
535 }
536
537 hdev->asic_funcs->is_device_idle(hdev, NULL, s);
538
539 return 0;
540 }
541
542 static bool hl_is_device_va(struct hl_device *hdev, u64 addr)
543 {
544 struct asic_fixed_properties *prop = &hdev->asic_prop;
545
546 if (!hdev->mmu_enable)
547 goto out;
548
549 if (hdev->dram_supports_virtual_memory &&
550 addr >= prop->va_space_dram_start_address &&
551 addr < prop->va_space_dram_end_address)
552 return true;
553
554 if (addr >= prop->va_space_host_start_address &&
555 addr < prop->va_space_host_end_address)
556 return true;
557 out:
558 return false;
559 }
560
561 static int device_va_to_pa(struct hl_device *hdev, u64 virt_addr,
562 u64 *phys_addr)
563 {
564 struct hl_ctx *ctx = hdev->compute_ctx;
565 struct asic_fixed_properties *prop = &hdev->asic_prop;
566 struct hl_mmu_properties *mmu_prop;
567 u64 hop_addr, hop_pte_addr, hop_pte;
568 u64 offset_mask = HOP4_MASK | FLAGS_MASK;
569 int rc = 0;
570 bool is_dram_addr;
571
572 if (!ctx) {
573 dev_err(hdev->dev, "no ctx available\n");
574 return -EINVAL;
575 }
576
577 is_dram_addr = hl_mem_area_inside_range(virt_addr, prop->dmmu.page_size,
578 prop->va_space_dram_start_address,
579 prop->va_space_dram_end_address);
580
581 mmu_prop = is_dram_addr ? &prop->dmmu : &prop->pmmu;
582
583 mutex_lock(&ctx->mmu_lock);
584
585 /* hop 0 */
586 hop_addr = get_hop0_addr(ctx);
587 hop_pte_addr = get_hop0_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
588 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
589
590 /* hop 1 */
591 hop_addr = get_next_hop_addr(hop_pte);
592 if (hop_addr == ULLONG_MAX)
593 goto not_mapped;
594 hop_pte_addr = get_hop1_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
595 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
596
597 /* hop 2 */
598 hop_addr = get_next_hop_addr(hop_pte);
599 if (hop_addr == ULLONG_MAX)
600 goto not_mapped;
601 hop_pte_addr = get_hop2_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
602 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
603
604 /* hop 3 */
605 hop_addr = get_next_hop_addr(hop_pte);
606 if (hop_addr == ULLONG_MAX)
607 goto not_mapped;
608 hop_pte_addr = get_hop3_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
609 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
610
611 if (!(hop_pte & LAST_MASK)) {
612 /* hop 4 */
613 hop_addr = get_next_hop_addr(hop_pte);
614 if (hop_addr == ULLONG_MAX)
615 goto not_mapped;
616 hop_pte_addr = get_hop4_pte_addr(ctx, mmu_prop, hop_addr,
617 virt_addr);
618 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
619
620 offset_mask = FLAGS_MASK;
621 }
622
623 if (!(hop_pte & PAGE_PRESENT_MASK))
624 goto not_mapped;
625
626 *phys_addr = (hop_pte & ~offset_mask) | (virt_addr & offset_mask);
627
628 goto out;
629
630 not_mapped:
631 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
632 virt_addr);
633 rc = -EINVAL;
634 out:
635 mutex_unlock(&ctx->mmu_lock);
636 return rc;
637 }
638
639 static ssize_t hl_data_read32(struct file *f, char __user *buf,
640 size_t count, loff_t *ppos)
641 {
642 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
643 struct hl_device *hdev = entry->hdev;
644 char tmp_buf[32];
645 u64 addr = entry->addr;
646 u32 val;
647 ssize_t rc;
648
649 if (atomic_read(&hdev->in_reset)) {
650 dev_warn_ratelimited(hdev->dev, "Can't read during reset\n");
651 return 0;
652 }
653
654 if (*ppos)
655 return 0;
656
657 if (hl_is_device_va(hdev, addr)) {
658 rc = device_va_to_pa(hdev, addr, &addr);
659 if (rc)
660 return rc;
661 }
662
663 rc = hdev->asic_funcs->debugfs_read32(hdev, addr, &val);
664 if (rc) {
665 dev_err(hdev->dev, "Failed to read from 0x%010llx\n", addr);
666 return rc;
667 }
668
669 sprintf(tmp_buf, "0x%08x\n", val);
670 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
671 strlen(tmp_buf));
672 }
673
674 static ssize_t hl_data_write32(struct file *f, const char __user *buf,
675 size_t count, loff_t *ppos)
676 {
677 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
678 struct hl_device *hdev = entry->hdev;
679 u64 addr = entry->addr;
680 u32 value;
681 ssize_t rc;
682
683 if (atomic_read(&hdev->in_reset)) {
684 dev_warn_ratelimited(hdev->dev, "Can't write during reset\n");
685 return 0;
686 }
687
688 rc = kstrtouint_from_user(buf, count, 16, &value);
689 if (rc)
690 return rc;
691
692 if (hl_is_device_va(hdev, addr)) {
693 rc = device_va_to_pa(hdev, addr, &addr);
694 if (rc)
695 return rc;
696 }
697
698 rc = hdev->asic_funcs->debugfs_write32(hdev, addr, value);
699 if (rc) {
700 dev_err(hdev->dev, "Failed to write 0x%08x to 0x%010llx\n",
701 value, addr);
702 return rc;
703 }
704
705 return count;
706 }
707
708 static ssize_t hl_get_power_state(struct file *f, char __user *buf,
709 size_t count, loff_t *ppos)
710 {
711 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
712 struct hl_device *hdev = entry->hdev;
713 char tmp_buf[200];
714 int i;
715
716 if (*ppos)
717 return 0;
718
719 if (hdev->pdev->current_state == PCI_D0)
720 i = 1;
721 else if (hdev->pdev->current_state == PCI_D3hot)
722 i = 2;
723 else
724 i = 3;
725
726 sprintf(tmp_buf,
727 "current power state: %d\n1 - D0\n2 - D3hot\n3 - Unknown\n", i);
728 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
729 strlen(tmp_buf));
730 }
731
732 static ssize_t hl_set_power_state(struct file *f, const char __user *buf,
733 size_t count, loff_t *ppos)
734 {
735 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
736 struct hl_device *hdev = entry->hdev;
737 u32 value;
738 ssize_t rc;
739
740 rc = kstrtouint_from_user(buf, count, 10, &value);
741 if (rc)
742 return rc;
743
744 if (value == 1) {
745 pci_set_power_state(hdev->pdev, PCI_D0);
746 pci_restore_state(hdev->pdev);
747 rc = pci_enable_device(hdev->pdev);
748 } else if (value == 2) {
749 pci_save_state(hdev->pdev);
750 pci_disable_device(hdev->pdev);
751 pci_set_power_state(hdev->pdev, PCI_D3hot);
752 } else {
753 dev_dbg(hdev->dev, "invalid power state value %u\n", value);
754 return -EINVAL;
755 }
756
757 return count;
758 }
759
760 static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
761 size_t count, loff_t *ppos)
762 {
763 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
764 struct hl_device *hdev = entry->hdev;
765 char tmp_buf[32];
766 u32 val;
767 ssize_t rc;
768
769 if (*ppos)
770 return 0;
771
772 rc = hl_debugfs_i2c_read(hdev, entry->i2c_bus, entry->i2c_addr,
773 entry->i2c_reg, &val);
774 if (rc) {
775 dev_err(hdev->dev,
776 "Failed to read from I2C bus %d, addr %d, reg %d\n",
777 entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
778 return rc;
779 }
780
781 sprintf(tmp_buf, "0x%02x\n", val);
782 rc = simple_read_from_buffer(buf, count, ppos, tmp_buf,
783 strlen(tmp_buf));
784
785 return rc;
786 }
787
788 static ssize_t hl_i2c_data_write(struct file *f, const char __user *buf,
789 size_t count, loff_t *ppos)
790 {
791 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
792 struct hl_device *hdev = entry->hdev;
793 u32 value;
794 ssize_t rc;
795
796 rc = kstrtouint_from_user(buf, count, 16, &value);
797 if (rc)
798 return rc;
799
800 rc = hl_debugfs_i2c_write(hdev, entry->i2c_bus, entry->i2c_addr,
801 entry->i2c_reg, value);
802 if (rc) {
803 dev_err(hdev->dev,
804 "Failed to write 0x%02x to I2C bus %d, addr %d, reg %d\n",
805 value, entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
806 return rc;
807 }
808
809 return count;
810 }
811
812 static ssize_t hl_led0_write(struct file *f, const char __user *buf,
813 size_t count, loff_t *ppos)
814 {
815 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
816 struct hl_device *hdev = entry->hdev;
817 u32 value;
818 ssize_t rc;
819
820 rc = kstrtouint_from_user(buf, count, 10, &value);
821 if (rc)
822 return rc;
823
824 value = value ? 1 : 0;
825
826 hl_debugfs_led_set(hdev, 0, value);
827
828 return count;
829 }
830
831 static ssize_t hl_led1_write(struct file *f, const char __user *buf,
832 size_t count, loff_t *ppos)
833 {
834 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
835 struct hl_device *hdev = entry->hdev;
836 u32 value;
837 ssize_t rc;
838
839 rc = kstrtouint_from_user(buf, count, 10, &value);
840 if (rc)
841 return rc;
842
843 value = value ? 1 : 0;
844
845 hl_debugfs_led_set(hdev, 1, value);
846
847 return count;
848 }
849
850 static ssize_t hl_led2_write(struct file *f, const char __user *buf,
851 size_t count, loff_t *ppos)
852 {
853 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
854 struct hl_device *hdev = entry->hdev;
855 u32 value;
856 ssize_t rc;
857
858 rc = kstrtouint_from_user(buf, count, 10, &value);
859 if (rc)
860 return rc;
861
862 value = value ? 1 : 0;
863
864 hl_debugfs_led_set(hdev, 2, value);
865
866 return count;
867 }
868
869 static ssize_t hl_device_read(struct file *f, char __user *buf,
870 size_t count, loff_t *ppos)
871 {
872 static const char *help =
873 "Valid values: disable, enable, suspend, resume, cpu_timeout\n";
874 return simple_read_from_buffer(buf, count, ppos, help, strlen(help));
875 }
876
877 static ssize_t hl_device_write(struct file *f, const char __user *buf,
878 size_t count, loff_t *ppos)
879 {
880 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
881 struct hl_device *hdev = entry->hdev;
882 char data[30] = {0};
883
884 /* don't allow partial writes */
885 if (*ppos != 0)
886 return 0;
887
888 simple_write_to_buffer(data, 29, ppos, buf, count);
889
890 if (strncmp("disable", data, strlen("disable")) == 0) {
891 hdev->disabled = true;
892 } else if (strncmp("enable", data, strlen("enable")) == 0) {
893 hdev->disabled = false;
894 } else if (strncmp("suspend", data, strlen("suspend")) == 0) {
895 hdev->asic_funcs->suspend(hdev);
896 } else if (strncmp("resume", data, strlen("resume")) == 0) {
897 hdev->asic_funcs->resume(hdev);
898 } else if (strncmp("cpu_timeout", data, strlen("cpu_timeout")) == 0) {
899 hdev->device_cpu_disabled = true;
900 } else {
901 dev_err(hdev->dev,
902 "Valid values: disable, enable, suspend, resume, cpu_timeout\n");
903 count = -EINVAL;
904 }
905
906 return count;
907 }
908
909 static const struct file_operations hl_data32b_fops = {
910 .owner = THIS_MODULE,
911 .read = hl_data_read32,
912 .write = hl_data_write32
913 };
914
915 static const struct file_operations hl_i2c_data_fops = {
916 .owner = THIS_MODULE,
917 .read = hl_i2c_data_read,
918 .write = hl_i2c_data_write
919 };
920
921 static const struct file_operations hl_power_fops = {
922 .owner = THIS_MODULE,
923 .read = hl_get_power_state,
924 .write = hl_set_power_state
925 };
926
927 static const struct file_operations hl_led0_fops = {
928 .owner = THIS_MODULE,
929 .write = hl_led0_write
930 };
931
932 static const struct file_operations hl_led1_fops = {
933 .owner = THIS_MODULE,
934 .write = hl_led1_write
935 };
936
937 static const struct file_operations hl_led2_fops = {
938 .owner = THIS_MODULE,
939 .write = hl_led2_write
940 };
941
942 static const struct file_operations hl_device_fops = {
943 .owner = THIS_MODULE,
944 .read = hl_device_read,
945 .write = hl_device_write
946 };
947
948 static const struct hl_info_list hl_debugfs_list[] = {
949 {"command_buffers", command_buffers_show, NULL},
950 {"command_submission", command_submission_show, NULL},
951 {"command_submission_jobs", command_submission_jobs_show, NULL},
952 {"userptr", userptr_show, NULL},
953 {"vm", vm_show, NULL},
954 {"mmu", mmu_show, mmu_write},
955 {"engines", engines_show, NULL}
956 };
957
958 static int hl_debugfs_open(struct inode *inode, struct file *file)
959 {
960 struct hl_debugfs_entry *node = inode->i_private;
961
962 return single_open(file, node->info_ent->show, node);
963 }
964
965 static ssize_t hl_debugfs_write(struct file *file, const char __user *buf,
966 size_t count, loff_t *f_pos)
967 {
968 struct hl_debugfs_entry *node = file->f_inode->i_private;
969
970 if (node->info_ent->write)
971 return node->info_ent->write(file, buf, count, f_pos);
972 else
973 return -EINVAL;
974
975 }
976
977 static const struct file_operations hl_debugfs_fops = {
978 .owner = THIS_MODULE,
979 .open = hl_debugfs_open,
980 .read = seq_read,
981 .write = hl_debugfs_write,
982 .llseek = seq_lseek,
983 .release = single_release,
984 };
985
986 void hl_debugfs_add_device(struct hl_device *hdev)
987 {
988 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
989 int count = ARRAY_SIZE(hl_debugfs_list);
990 struct hl_debugfs_entry *entry;
991 struct dentry *ent;
992 int i;
993
994 dev_entry->hdev = hdev;
995 dev_entry->entry_arr = kmalloc_array(count,
996 sizeof(struct hl_debugfs_entry),
997 GFP_KERNEL);
998 if (!dev_entry->entry_arr)
999 return;
1000
1001 INIT_LIST_HEAD(&dev_entry->file_list);
1002 INIT_LIST_HEAD(&dev_entry->cb_list);
1003 INIT_LIST_HEAD(&dev_entry->cs_list);
1004 INIT_LIST_HEAD(&dev_entry->cs_job_list);
1005 INIT_LIST_HEAD(&dev_entry->userptr_list);
1006 INIT_LIST_HEAD(&dev_entry->ctx_mem_hash_list);
1007 mutex_init(&dev_entry->file_mutex);
1008 spin_lock_init(&dev_entry->cb_spinlock);
1009 spin_lock_init(&dev_entry->cs_spinlock);
1010 spin_lock_init(&dev_entry->cs_job_spinlock);
1011 spin_lock_init(&dev_entry->userptr_spinlock);
1012 spin_lock_init(&dev_entry->ctx_mem_hash_spinlock);
1013
1014 dev_entry->root = debugfs_create_dir(dev_name(hdev->dev),
1015 hl_debug_root);
1016
1017 debugfs_create_x64("addr",
1018 0644,
1019 dev_entry->root,
1020 &dev_entry->addr);
1021
1022 debugfs_create_file("data32",
1023 0644,
1024 dev_entry->root,
1025 dev_entry,
1026 &hl_data32b_fops);
1027
1028 debugfs_create_file("set_power_state",
1029 0200,
1030 dev_entry->root,
1031 dev_entry,
1032 &hl_power_fops);
1033
1034 debugfs_create_u8("i2c_bus",
1035 0644,
1036 dev_entry->root,
1037 &dev_entry->i2c_bus);
1038
1039 debugfs_create_u8("i2c_addr",
1040 0644,
1041 dev_entry->root,
1042 &dev_entry->i2c_addr);
1043
1044 debugfs_create_u8("i2c_reg",
1045 0644,
1046 dev_entry->root,
1047 &dev_entry->i2c_reg);
1048
1049 debugfs_create_file("i2c_data",
1050 0644,
1051 dev_entry->root,
1052 dev_entry,
1053 &hl_i2c_data_fops);
1054
1055 debugfs_create_file("led0",
1056 0200,
1057 dev_entry->root,
1058 dev_entry,
1059 &hl_led0_fops);
1060
1061 debugfs_create_file("led1",
1062 0200,
1063 dev_entry->root,
1064 dev_entry,
1065 &hl_led1_fops);
1066
1067 debugfs_create_file("led2",
1068 0200,
1069 dev_entry->root,
1070 dev_entry,
1071 &hl_led2_fops);
1072
1073 debugfs_create_file("device",
1074 0200,
1075 dev_entry->root,
1076 dev_entry,
1077 &hl_device_fops);
1078
1079 for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) {
1080
1081 ent = debugfs_create_file(hl_debugfs_list[i].name,
1082 0444,
1083 dev_entry->root,
1084 entry,
1085 &hl_debugfs_fops);
1086 entry->dent = ent;
1087 entry->info_ent = &hl_debugfs_list[i];
1088 entry->dev_entry = dev_entry;
1089 }
1090 }
1091
1092 void hl_debugfs_remove_device(struct hl_device *hdev)
1093 {
1094 struct hl_dbg_device_entry *entry = &hdev->hl_debugfs;
1095
1096 debugfs_remove_recursive(entry->root);
1097
1098 mutex_destroy(&entry->file_mutex);
1099 kfree(entry->entry_arr);
1100 }
1101
1102 void hl_debugfs_add_file(struct hl_fpriv *hpriv)
1103 {
1104 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1105
1106 mutex_lock(&dev_entry->file_mutex);
1107 list_add(&hpriv->debugfs_list, &dev_entry->file_list);
1108 mutex_unlock(&dev_entry->file_mutex);
1109 }
1110
1111 void hl_debugfs_remove_file(struct hl_fpriv *hpriv)
1112 {
1113 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1114
1115 mutex_lock(&dev_entry->file_mutex);
1116 list_del(&hpriv->debugfs_list);
1117 mutex_unlock(&dev_entry->file_mutex);
1118 }
1119
1120 void hl_debugfs_add_cb(struct hl_cb *cb)
1121 {
1122 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1123
1124 spin_lock(&dev_entry->cb_spinlock);
1125 list_add(&cb->debugfs_list, &dev_entry->cb_list);
1126 spin_unlock(&dev_entry->cb_spinlock);
1127 }
1128
1129 void hl_debugfs_remove_cb(struct hl_cb *cb)
1130 {
1131 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1132
1133 spin_lock(&dev_entry->cb_spinlock);
1134 list_del(&cb->debugfs_list);
1135 spin_unlock(&dev_entry->cb_spinlock);
1136 }
1137
1138 void hl_debugfs_add_cs(struct hl_cs *cs)
1139 {
1140 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1141
1142 spin_lock(&dev_entry->cs_spinlock);
1143 list_add(&cs->debugfs_list, &dev_entry->cs_list);
1144 spin_unlock(&dev_entry->cs_spinlock);
1145 }
1146
1147 void hl_debugfs_remove_cs(struct hl_cs *cs)
1148 {
1149 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1150
1151 spin_lock(&dev_entry->cs_spinlock);
1152 list_del(&cs->debugfs_list);
1153 spin_unlock(&dev_entry->cs_spinlock);
1154 }
1155
1156 void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job)
1157 {
1158 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1159
1160 spin_lock(&dev_entry->cs_job_spinlock);
1161 list_add(&job->debugfs_list, &dev_entry->cs_job_list);
1162 spin_unlock(&dev_entry->cs_job_spinlock);
1163 }
1164
1165 void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job)
1166 {
1167 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1168
1169 spin_lock(&dev_entry->cs_job_spinlock);
1170 list_del(&job->debugfs_list);
1171 spin_unlock(&dev_entry->cs_job_spinlock);
1172 }
1173
1174 void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr)
1175 {
1176 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1177
1178 spin_lock(&dev_entry->userptr_spinlock);
1179 list_add(&userptr->debugfs_list, &dev_entry->userptr_list);
1180 spin_unlock(&dev_entry->userptr_spinlock);
1181 }
1182
1183 void hl_debugfs_remove_userptr(struct hl_device *hdev,
1184 struct hl_userptr *userptr)
1185 {
1186 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1187
1188 spin_lock(&dev_entry->userptr_spinlock);
1189 list_del(&userptr->debugfs_list);
1190 spin_unlock(&dev_entry->userptr_spinlock);
1191 }
1192
1193 void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1194 {
1195 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1196
1197 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1198 list_add(&ctx->debugfs_list, &dev_entry->ctx_mem_hash_list);
1199 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1200 }
1201
1202 void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1203 {
1204 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1205
1206 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1207 list_del(&ctx->debugfs_list);
1208 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1209 }
1210
1211 void __init hl_debugfs_init(void)
1212 {
1213 hl_debug_root = debugfs_create_dir("habanalabs", NULL);
1214 }
1215
1216 void hl_debugfs_fini(void)
1217 {
1218 debugfs_remove_recursive(hl_debug_root);
1219 }
Linux with added FPC-III support