1
2
3
4
5
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
19static struct dentry *hl_debug_root;
20
21static 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
47static 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
74static 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
96static 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
127static 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
158static 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
193static 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
224static 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
304static 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
310static 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
317static 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
325static 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
333static 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
341static 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
349static 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
357static 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
365static 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->dmmu.start_addr,
397 prop->dmmu.end_addr);
398
399
400 mmu_prop = is_dram_addr ? &prop->dmmu : &prop->pmmu;
401
402 mutex_lock(&ctx->mmu_lock);
403
404
405
406 hop0_addr = get_hop0_addr(ctx);
407 hop0_pte_addr = get_hop0_pte_addr(ctx, mmu_prop, hop0_addr, virt_addr);
408 hop0_pte = hdev->asic_funcs->read_pte(hdev, hop0_pte_addr);
409 hop1_addr = get_next_hop_addr(hop0_pte);
410
411 if (hop1_addr == ULLONG_MAX)
412 goto not_mapped;
413
414 hop1_pte_addr = get_hop1_pte_addr(ctx, mmu_prop, hop1_addr, virt_addr);
415 hop1_pte = hdev->asic_funcs->read_pte(hdev, hop1_pte_addr);
416 hop2_addr = get_next_hop_addr(hop1_pte);
417
418 if (hop2_addr == ULLONG_MAX)
419 goto not_mapped;
420
421 hop2_pte_addr = get_hop2_pte_addr(ctx, mmu_prop, hop2_addr, virt_addr);
422 hop2_pte = hdev->asic_funcs->read_pte(hdev, hop2_pte_addr);
423 hop3_addr = get_next_hop_addr(hop2_pte);
424
425 if (hop3_addr == ULLONG_MAX)
426 goto not_mapped;
427
428 hop3_pte_addr = get_hop3_pte_addr(ctx, mmu_prop, hop3_addr, virt_addr);
429 hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr);
430
431 if (!(hop3_pte & LAST_MASK)) {
432 hop4_addr = get_next_hop_addr(hop3_pte);
433
434 if (hop4_addr == ULLONG_MAX)
435 goto not_mapped;
436
437 hop4_pte_addr = get_hop4_pte_addr(ctx, mmu_prop, hop4_addr,
438 virt_addr);
439 hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr);
440 if (!(hop4_pte & PAGE_PRESENT_MASK))
441 goto not_mapped;
442 } else {
443 if (!(hop3_pte & PAGE_PRESENT_MASK))
444 goto not_mapped;
445 }
446
447 seq_printf(s, "asid: %u, virt_addr: 0x%llx\n",
448 dev_entry->mmu_asid, dev_entry->mmu_addr);
449
450 seq_printf(s, "hop0_addr: 0x%llx\n", hop0_addr);
451 seq_printf(s, "hop0_pte_addr: 0x%llx\n", hop0_pte_addr);
452 seq_printf(s, "hop0_pte: 0x%llx\n", hop0_pte);
453
454 seq_printf(s, "hop1_addr: 0x%llx\n", hop1_addr);
455 seq_printf(s, "hop1_pte_addr: 0x%llx\n", hop1_pte_addr);
456 seq_printf(s, "hop1_pte: 0x%llx\n", hop1_pte);
457
458 seq_printf(s, "hop2_addr: 0x%llx\n", hop2_addr);
459 seq_printf(s, "hop2_pte_addr: 0x%llx\n", hop2_pte_addr);
460 seq_printf(s, "hop2_pte: 0x%llx\n", hop2_pte);
461
462 seq_printf(s, "hop3_addr: 0x%llx\n", hop3_addr);
463 seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr);
464 seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte);
465
466 if (!(hop3_pte & LAST_MASK)) {
467 seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
468 seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
469 seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
470 }
471
472 goto out;
473
474not_mapped:
475 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
476 virt_addr);
477out:
478 mutex_unlock(&ctx->mmu_lock);
479
480 return 0;
481}
482
483static ssize_t mmu_write(struct file *file, const char __user *buf,
484 size_t count, loff_t *f_pos)
485{
486 struct seq_file *s = file->private_data;
487 struct hl_debugfs_entry *entry = s->private;
488 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
489 struct hl_device *hdev = dev_entry->hdev;
490 char kbuf[MMU_KBUF_SIZE];
491 char *c;
492 ssize_t rc;
493
494 if (!hdev->mmu_enable)
495 return count;
496
497 if (count > sizeof(kbuf) - 1)
498 goto err;
499 if (copy_from_user(kbuf, buf, count))
500 goto err;
501 kbuf[count] = 0;
502
503 c = strchr(kbuf, ' ');
504 if (!c)
505 goto err;
506 *c = '\0';
507
508 rc = kstrtouint(kbuf, 10, &dev_entry->mmu_asid);
509 if (rc)
510 goto err;
511
512 if (strncmp(c+1, "0x", 2))
513 goto err;
514 rc = kstrtoull(c+3, 16, &dev_entry->mmu_addr);
515 if (rc)
516 goto err;
517
518 return count;
519
520err:
521 dev_err(hdev->dev, "usage: echo <asid> <0xaddr> > mmu\n");
522
523 return -EINVAL;
524}
525
526static int engines_show(struct seq_file *s, void *data)
527{
528 struct hl_debugfs_entry *entry = s->private;
529 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
530 struct hl_device *hdev = dev_entry->hdev;
531
532 if (atomic_read(&hdev->in_reset)) {
533 dev_warn_ratelimited(hdev->dev,
534 "Can't check device idle during reset\n");
535 return 0;
536 }
537
538 hdev->asic_funcs->is_device_idle(hdev, NULL, s);
539
540 return 0;
541}
542
543static bool hl_is_device_va(struct hl_device *hdev, u64 addr)
544{
545 struct asic_fixed_properties *prop = &hdev->asic_prop;
546
547 if (!hdev->mmu_enable)
548 goto out;
549
550 if (hdev->dram_supports_virtual_memory &&
551 (addr >= prop->dmmu.start_addr && addr < prop->dmmu.end_addr))
552 return true;
553
554 if (addr >= prop->pmmu.start_addr &&
555 addr < prop->pmmu.end_addr)
556 return true;
557
558 if (addr >= prop->pmmu_huge.start_addr &&
559 addr < prop->pmmu_huge.end_addr)
560 return true;
561out:
562 return false;
563}
564
565static int device_va_to_pa(struct hl_device *hdev, u64 virt_addr,
566 u64 *phys_addr)
567{
568 struct hl_ctx *ctx = hdev->compute_ctx;
569 struct asic_fixed_properties *prop = &hdev->asic_prop;
570 struct hl_mmu_properties *mmu_prop;
571 u64 hop_addr, hop_pte_addr, hop_pte;
572 u64 offset_mask = HOP4_MASK | FLAGS_MASK;
573 int rc = 0;
574 bool is_dram_addr;
575
576 if (!ctx) {
577 dev_err(hdev->dev, "no ctx available\n");
578 return -EINVAL;
579 }
580
581 is_dram_addr = hl_mem_area_inside_range(virt_addr, prop->dmmu.page_size,
582 prop->dmmu.start_addr,
583 prop->dmmu.end_addr);
584
585
586 mmu_prop = is_dram_addr ? &prop->dmmu : &prop->pmmu;
587
588 mutex_lock(&ctx->mmu_lock);
589
590
591 hop_addr = get_hop0_addr(ctx);
592 hop_pte_addr = get_hop0_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
593 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
594
595
596 hop_addr = get_next_hop_addr(hop_pte);
597 if (hop_addr == ULLONG_MAX)
598 goto not_mapped;
599 hop_pte_addr = get_hop1_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
600 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
601
602
603 hop_addr = get_next_hop_addr(hop_pte);
604 if (hop_addr == ULLONG_MAX)
605 goto not_mapped;
606 hop_pte_addr = get_hop2_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
607 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
608
609
610 hop_addr = get_next_hop_addr(hop_pte);
611 if (hop_addr == ULLONG_MAX)
612 goto not_mapped;
613 hop_pte_addr = get_hop3_pte_addr(ctx, mmu_prop, hop_addr, virt_addr);
614 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
615
616 if (!(hop_pte & LAST_MASK)) {
617
618 hop_addr = get_next_hop_addr(hop_pte);
619 if (hop_addr == ULLONG_MAX)
620 goto not_mapped;
621 hop_pte_addr = get_hop4_pte_addr(ctx, mmu_prop, hop_addr,
622 virt_addr);
623 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
624
625 offset_mask = FLAGS_MASK;
626 }
627
628 if (!(hop_pte & PAGE_PRESENT_MASK))
629 goto not_mapped;
630
631 *phys_addr = (hop_pte & ~offset_mask) | (virt_addr & offset_mask);
632
633 goto out;
634
635not_mapped:
636 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
637 virt_addr);
638 rc = -EINVAL;
639out:
640 mutex_unlock(&ctx->mmu_lock);
641 return rc;
642}
643
644static ssize_t hl_data_read32(struct file *f, char __user *buf,
645 size_t count, loff_t *ppos)
646{
647 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
648 struct hl_device *hdev = entry->hdev;
649 char tmp_buf[32];
650 u64 addr = entry->addr;
651 u32 val;
652 ssize_t rc;
653
654 if (atomic_read(&hdev->in_reset)) {
655 dev_warn_ratelimited(hdev->dev, "Can't read during reset\n");
656 return 0;
657 }
658
659 if (*ppos)
660 return 0;
661
662 if (hl_is_device_va(hdev, addr)) {
663 rc = device_va_to_pa(hdev, addr, &addr);
664 if (rc)
665 return rc;
666 }
667
668 rc = hdev->asic_funcs->debugfs_read32(hdev, addr, &val);
669 if (rc) {
670 dev_err(hdev->dev, "Failed to read from 0x%010llx\n", addr);
671 return rc;
672 }
673
674 sprintf(tmp_buf, "0x%08x\n", val);
675 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
676 strlen(tmp_buf));
677}
678
679static ssize_t hl_data_write32(struct file *f, const char __user *buf,
680 size_t count, loff_t *ppos)
681{
682 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
683 struct hl_device *hdev = entry->hdev;
684 u64 addr = entry->addr;
685 u32 value;
686 ssize_t rc;
687
688 if (atomic_read(&hdev->in_reset)) {
689 dev_warn_ratelimited(hdev->dev, "Can't write during reset\n");
690 return 0;
691 }
692
693 rc = kstrtouint_from_user(buf, count, 16, &value);
694 if (rc)
695 return rc;
696
697 if (hl_is_device_va(hdev, addr)) {
698 rc = device_va_to_pa(hdev, addr, &addr);
699 if (rc)
700 return rc;
701 }
702
703 rc = hdev->asic_funcs->debugfs_write32(hdev, addr, value);
704 if (rc) {
705 dev_err(hdev->dev, "Failed to write 0x%08x to 0x%010llx\n",
706 value, addr);
707 return rc;
708 }
709
710 return count;
711}
712
713static ssize_t hl_data_read64(struct file *f, char __user *buf,
714 size_t count, loff_t *ppos)
715{
716 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
717 struct hl_device *hdev = entry->hdev;
718 char tmp_buf[32];
719 u64 addr = entry->addr;
720 u64 val;
721 ssize_t rc;
722
723 if (*ppos)
724 return 0;
725
726 if (hl_is_device_va(hdev, addr)) {
727 rc = device_va_to_pa(hdev, addr, &addr);
728 if (rc)
729 return rc;
730 }
731
732 rc = hdev->asic_funcs->debugfs_read64(hdev, addr, &val);
733 if (rc) {
734 dev_err(hdev->dev, "Failed to read from 0x%010llx\n", addr);
735 return rc;
736 }
737
738 sprintf(tmp_buf, "0x%016llx\n", val);
739 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
740 strlen(tmp_buf));
741}
742
743static ssize_t hl_data_write64(struct file *f, const char __user *buf,
744 size_t count, loff_t *ppos)
745{
746 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
747 struct hl_device *hdev = entry->hdev;
748 u64 addr = entry->addr;
749 u64 value;
750 ssize_t rc;
751
752 rc = kstrtoull_from_user(buf, count, 16, &value);
753 if (rc)
754 return rc;
755
756 if (hl_is_device_va(hdev, addr)) {
757 rc = device_va_to_pa(hdev, addr, &addr);
758 if (rc)
759 return rc;
760 }
761
762 rc = hdev->asic_funcs->debugfs_write64(hdev, addr, value);
763 if (rc) {
764 dev_err(hdev->dev, "Failed to write 0x%016llx to 0x%010llx\n",
765 value, addr);
766 return rc;
767 }
768
769 return count;
770}
771
772static ssize_t hl_get_power_state(struct file *f, char __user *buf,
773 size_t count, loff_t *ppos)
774{
775 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
776 struct hl_device *hdev = entry->hdev;
777 char tmp_buf[200];
778 int i;
779
780 if (*ppos)
781 return 0;
782
783 if (hdev->pdev->current_state == PCI_D0)
784 i = 1;
785 else if (hdev->pdev->current_state == PCI_D3hot)
786 i = 2;
787 else
788 i = 3;
789
790 sprintf(tmp_buf,
791 "current power state: %d\n1 - D0\n2 - D3hot\n3 - Unknown\n", i);
792 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
793 strlen(tmp_buf));
794}
795
796static ssize_t hl_set_power_state(struct file *f, const char __user *buf,
797 size_t count, loff_t *ppos)
798{
799 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
800 struct hl_device *hdev = entry->hdev;
801 u32 value;
802 ssize_t rc;
803
804 rc = kstrtouint_from_user(buf, count, 10, &value);
805 if (rc)
806 return rc;
807
808 if (value == 1) {
809 pci_set_power_state(hdev->pdev, PCI_D0);
810 pci_restore_state(hdev->pdev);
811 rc = pci_enable_device(hdev->pdev);
812 } else if (value == 2) {
813 pci_save_state(hdev->pdev);
814 pci_disable_device(hdev->pdev);
815 pci_set_power_state(hdev->pdev, PCI_D3hot);
816 } else {
817 dev_dbg(hdev->dev, "invalid power state value %u\n", value);
818 return -EINVAL;
819 }
820
821 return count;
822}
823
824static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
825 size_t count, loff_t *ppos)
826{
827 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
828 struct hl_device *hdev = entry->hdev;
829 char tmp_buf[32];
830 u32 val;
831 ssize_t rc;
832
833 if (*ppos)
834 return 0;
835
836 rc = hl_debugfs_i2c_read(hdev, entry->i2c_bus, entry->i2c_addr,
837 entry->i2c_reg, &val);
838 if (rc) {
839 dev_err(hdev->dev,
840 "Failed to read from I2C bus %d, addr %d, reg %d\n",
841 entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
842 return rc;
843 }
844
845 sprintf(tmp_buf, "0x%02x\n", val);
846 rc = simple_read_from_buffer(buf, count, ppos, tmp_buf,
847 strlen(tmp_buf));
848
849 return rc;
850}
851
852static ssize_t hl_i2c_data_write(struct file *f, const char __user *buf,
853 size_t count, loff_t *ppos)
854{
855 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
856 struct hl_device *hdev = entry->hdev;
857 u32 value;
858 ssize_t rc;
859
860 rc = kstrtouint_from_user(buf, count, 16, &value);
861 if (rc)
862 return rc;
863
864 rc = hl_debugfs_i2c_write(hdev, entry->i2c_bus, entry->i2c_addr,
865 entry->i2c_reg, value);
866 if (rc) {
867 dev_err(hdev->dev,
868 "Failed to write 0x%02x to I2C bus %d, addr %d, reg %d\n",
869 value, entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
870 return rc;
871 }
872
873 return count;
874}
875
876static ssize_t hl_led0_write(struct file *f, const char __user *buf,
877 size_t count, loff_t *ppos)
878{
879 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
880 struct hl_device *hdev = entry->hdev;
881 u32 value;
882 ssize_t rc;
883
884 rc = kstrtouint_from_user(buf, count, 10, &value);
885 if (rc)
886 return rc;
887
888 value = value ? 1 : 0;
889
890 hl_debugfs_led_set(hdev, 0, value);
891
892 return count;
893}
894
895static ssize_t hl_led1_write(struct file *f, const char __user *buf,
896 size_t count, loff_t *ppos)
897{
898 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
899 struct hl_device *hdev = entry->hdev;
900 u32 value;
901 ssize_t rc;
902
903 rc = kstrtouint_from_user(buf, count, 10, &value);
904 if (rc)
905 return rc;
906
907 value = value ? 1 : 0;
908
909 hl_debugfs_led_set(hdev, 1, value);
910
911 return count;
912}
913
914static ssize_t hl_led2_write(struct file *f, const char __user *buf,
915 size_t count, loff_t *ppos)
916{
917 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
918 struct hl_device *hdev = entry->hdev;
919 u32 value;
920 ssize_t rc;
921
922 rc = kstrtouint_from_user(buf, count, 10, &value);
923 if (rc)
924 return rc;
925
926 value = value ? 1 : 0;
927
928 hl_debugfs_led_set(hdev, 2, value);
929
930 return count;
931}
932
933static ssize_t hl_device_read(struct file *f, char __user *buf,
934 size_t count, loff_t *ppos)
935{
936 static const char *help =
937 "Valid values: disable, enable, suspend, resume, cpu_timeout\n";
938 return simple_read_from_buffer(buf, count, ppos, help, strlen(help));
939}
940
941static ssize_t hl_device_write(struct file *f, const char __user *buf,
942 size_t count, loff_t *ppos)
943{
944 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
945 struct hl_device *hdev = entry->hdev;
946 char data[30] = {0};
947
948
949 if (*ppos != 0)
950 return 0;
951
952 simple_write_to_buffer(data, 29, ppos, buf, count);
953
954 if (strncmp("disable", data, strlen("disable")) == 0) {
955 hdev->disabled = true;
956 } else if (strncmp("enable", data, strlen("enable")) == 0) {
957 hdev->disabled = false;
958 } else if (strncmp("suspend", data, strlen("suspend")) == 0) {
959 hdev->asic_funcs->suspend(hdev);
960 } else if (strncmp("resume", data, strlen("resume")) == 0) {
961 hdev->asic_funcs->resume(hdev);
962 } else if (strncmp("cpu_timeout", data, strlen("cpu_timeout")) == 0) {
963 hdev->device_cpu_disabled = true;
964 } else {
965 dev_err(hdev->dev,
966 "Valid values: disable, enable, suspend, resume, cpu_timeout\n");
967 count = -EINVAL;
968 }
969
970 return count;
971}
972
973static const struct file_operations hl_data32b_fops = {
974 .owner = THIS_MODULE,
975 .read = hl_data_read32,
976 .write = hl_data_write32
977};
978
979static const struct file_operations hl_data64b_fops = {
980 .owner = THIS_MODULE,
981 .read = hl_data_read64,
982 .write = hl_data_write64
983};
984
985static const struct file_operations hl_i2c_data_fops = {
986 .owner = THIS_MODULE,
987 .read = hl_i2c_data_read,
988 .write = hl_i2c_data_write
989};
990
991static const struct file_operations hl_power_fops = {
992 .owner = THIS_MODULE,
993 .read = hl_get_power_state,
994 .write = hl_set_power_state
995};
996
997static const struct file_operations hl_led0_fops = {
998 .owner = THIS_MODULE,
999 .write = hl_led0_write
1000};
1001
1002static const struct file_operations hl_led1_fops = {
1003 .owner = THIS_MODULE,
1004 .write = hl_led1_write
1005};
1006
1007static const struct file_operations hl_led2_fops = {
1008 .owner = THIS_MODULE,
1009 .write = hl_led2_write
1010};
1011
1012static const struct file_operations hl_device_fops = {
1013 .owner = THIS_MODULE,
1014 .read = hl_device_read,
1015 .write = hl_device_write
1016};
1017
1018static const struct hl_info_list hl_debugfs_list[] = {
1019 {"command_buffers", command_buffers_show, NULL},
1020 {"command_submission", command_submission_show, NULL},
1021 {"command_submission_jobs", command_submission_jobs_show, NULL},
1022 {"userptr", userptr_show, NULL},
1023 {"vm", vm_show, NULL},
1024 {"mmu", mmu_show, mmu_write},
1025 {"engines", engines_show, NULL}
1026};
1027
1028static int hl_debugfs_open(struct inode *inode, struct file *file)
1029{
1030 struct hl_debugfs_entry *node = inode->i_private;
1031
1032 return single_open(file, node->info_ent->show, node);
1033}
1034
1035static ssize_t hl_debugfs_write(struct file *file, const char __user *buf,
1036 size_t count, loff_t *f_pos)
1037{
1038 struct hl_debugfs_entry *node = file->f_inode->i_private;
1039
1040 if (node->info_ent->write)
1041 return node->info_ent->write(file, buf, count, f_pos);
1042 else
1043 return -EINVAL;
1044
1045}
1046
1047static const struct file_operations hl_debugfs_fops = {
1048 .owner = THIS_MODULE,
1049 .open = hl_debugfs_open,
1050 .read = seq_read,
1051 .write = hl_debugfs_write,
1052 .llseek = seq_lseek,
1053 .release = single_release,
1054};
1055
1056void hl_debugfs_add_device(struct hl_device *hdev)
1057{
1058 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1059 int count = ARRAY_SIZE(hl_debugfs_list);
1060 struct hl_debugfs_entry *entry;
1061 struct dentry *ent;
1062 int i;
1063
1064 dev_entry->hdev = hdev;
1065 dev_entry->entry_arr = kmalloc_array(count,
1066 sizeof(struct hl_debugfs_entry),
1067 GFP_KERNEL);
1068 if (!dev_entry->entry_arr)
1069 return;
1070
1071 INIT_LIST_HEAD(&dev_entry->file_list);
1072 INIT_LIST_HEAD(&dev_entry->cb_list);
1073 INIT_LIST_HEAD(&dev_entry->cs_list);
1074 INIT_LIST_HEAD(&dev_entry->cs_job_list);
1075 INIT_LIST_HEAD(&dev_entry->userptr_list);
1076 INIT_LIST_HEAD(&dev_entry->ctx_mem_hash_list);
1077 mutex_init(&dev_entry->file_mutex);
1078 spin_lock_init(&dev_entry->cb_spinlock);
1079 spin_lock_init(&dev_entry->cs_spinlock);
1080 spin_lock_init(&dev_entry->cs_job_spinlock);
1081 spin_lock_init(&dev_entry->userptr_spinlock);
1082 spin_lock_init(&dev_entry->ctx_mem_hash_spinlock);
1083
1084 dev_entry->root = debugfs_create_dir(dev_name(hdev->dev),
1085 hl_debug_root);
1086
1087 debugfs_create_x64("addr",
1088 0644,
1089 dev_entry->root,
1090 &dev_entry->addr);
1091
1092 debugfs_create_file("data32",
1093 0644,
1094 dev_entry->root,
1095 dev_entry,
1096 &hl_data32b_fops);
1097
1098 debugfs_create_file("data64",
1099 0644,
1100 dev_entry->root,
1101 dev_entry,
1102 &hl_data64b_fops);
1103
1104 debugfs_create_file("set_power_state",
1105 0200,
1106 dev_entry->root,
1107 dev_entry,
1108 &hl_power_fops);
1109
1110 debugfs_create_u8("i2c_bus",
1111 0644,
1112 dev_entry->root,
1113 &dev_entry->i2c_bus);
1114
1115 debugfs_create_u8("i2c_addr",
1116 0644,
1117 dev_entry->root,
1118 &dev_entry->i2c_addr);
1119
1120 debugfs_create_u8("i2c_reg",
1121 0644,
1122 dev_entry->root,
1123 &dev_entry->i2c_reg);
1124
1125 debugfs_create_file("i2c_data",
1126 0644,
1127 dev_entry->root,
1128 dev_entry,
1129 &hl_i2c_data_fops);
1130
1131 debugfs_create_file("led0",
1132 0200,
1133 dev_entry->root,
1134 dev_entry,
1135 &hl_led0_fops);
1136
1137 debugfs_create_file("led1",
1138 0200,
1139 dev_entry->root,
1140 dev_entry,
1141 &hl_led1_fops);
1142
1143 debugfs_create_file("led2",
1144 0200,
1145 dev_entry->root,
1146 dev_entry,
1147 &hl_led2_fops);
1148
1149 debugfs_create_file("device",
1150 0200,
1151 dev_entry->root,
1152 dev_entry,
1153 &hl_device_fops);
1154
1155 for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) {
1156
1157 ent = debugfs_create_file(hl_debugfs_list[i].name,
1158 0444,
1159 dev_entry->root,
1160 entry,
1161 &hl_debugfs_fops);
1162 entry->dent = ent;
1163 entry->info_ent = &hl_debugfs_list[i];
1164 entry->dev_entry = dev_entry;
1165 }
1166}
1167
1168void hl_debugfs_remove_device(struct hl_device *hdev)
1169{
1170 struct hl_dbg_device_entry *entry = &hdev->hl_debugfs;
1171
1172 debugfs_remove_recursive(entry->root);
1173
1174 mutex_destroy(&entry->file_mutex);
1175 kfree(entry->entry_arr);
1176}
1177
1178void hl_debugfs_add_file(struct hl_fpriv *hpriv)
1179{
1180 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1181
1182 mutex_lock(&dev_entry->file_mutex);
1183 list_add(&hpriv->debugfs_list, &dev_entry->file_list);
1184 mutex_unlock(&dev_entry->file_mutex);
1185}
1186
1187void hl_debugfs_remove_file(struct hl_fpriv *hpriv)
1188{
1189 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1190
1191 mutex_lock(&dev_entry->file_mutex);
1192 list_del(&hpriv->debugfs_list);
1193 mutex_unlock(&dev_entry->file_mutex);
1194}
1195
1196void hl_debugfs_add_cb(struct hl_cb *cb)
1197{
1198 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1199
1200 spin_lock(&dev_entry->cb_spinlock);
1201 list_add(&cb->debugfs_list, &dev_entry->cb_list);
1202 spin_unlock(&dev_entry->cb_spinlock);
1203}
1204
1205void hl_debugfs_remove_cb(struct hl_cb *cb)
1206{
1207 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1208
1209 spin_lock(&dev_entry->cb_spinlock);
1210 list_del(&cb->debugfs_list);
1211 spin_unlock(&dev_entry->cb_spinlock);
1212}
1213
1214void hl_debugfs_add_cs(struct hl_cs *cs)
1215{
1216 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1217
1218 spin_lock(&dev_entry->cs_spinlock);
1219 list_add(&cs->debugfs_list, &dev_entry->cs_list);
1220 spin_unlock(&dev_entry->cs_spinlock);
1221}
1222
1223void hl_debugfs_remove_cs(struct hl_cs *cs)
1224{
1225 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1226
1227 spin_lock(&dev_entry->cs_spinlock);
1228 list_del(&cs->debugfs_list);
1229 spin_unlock(&dev_entry->cs_spinlock);
1230}
1231
1232void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job)
1233{
1234 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1235
1236 spin_lock(&dev_entry->cs_job_spinlock);
1237 list_add(&job->debugfs_list, &dev_entry->cs_job_list);
1238 spin_unlock(&dev_entry->cs_job_spinlock);
1239}
1240
1241void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job)
1242{
1243 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1244
1245 spin_lock(&dev_entry->cs_job_spinlock);
1246 list_del(&job->debugfs_list);
1247 spin_unlock(&dev_entry->cs_job_spinlock);
1248}
1249
1250void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr)
1251{
1252 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1253
1254 spin_lock(&dev_entry->userptr_spinlock);
1255 list_add(&userptr->debugfs_list, &dev_entry->userptr_list);
1256 spin_unlock(&dev_entry->userptr_spinlock);
1257}
1258
1259void hl_debugfs_remove_userptr(struct hl_device *hdev,
1260 struct hl_userptr *userptr)
1261{
1262 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1263
1264 spin_lock(&dev_entry->userptr_spinlock);
1265 list_del(&userptr->debugfs_list);
1266 spin_unlock(&dev_entry->userptr_spinlock);
1267}
1268
1269void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1270{
1271 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1272
1273 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1274 list_add(&ctx->debugfs_list, &dev_entry->ctx_mem_hash_list);
1275 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1276}
1277
1278void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1279{
1280 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1281
1282 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1283 list_del(&ctx->debugfs_list);
1284 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1285}
1286
1287void __init hl_debugfs_init(void)
1288{
1289 hl_debug_root = debugfs_create_dir("habanalabs", NULL);
1290}
1291
1292void hl_debugfs_fini(void)
1293{
1294 debugfs_remove_recursive(hl_debug_root);
1295}
1296
