]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/misc/habanalabs/debugfs.c
projects / mirror_ubuntu-jammy-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
timekeeping: Repair ktime_get_coarse*() granularity
[mirror_ubuntu-jammy-kernel.git] / drivers / misc / habanalabs / debugfs.c
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_hop0_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
311 u64 virt_addr)
312 {
313 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
314 ((virt_addr & HOP0_MASK) >> HOP0_SHIFT);
315 }
316
317 static inline u64 get_hop1_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
318 u64 virt_addr)
319 {
320 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
321 ((virt_addr & HOP1_MASK) >> HOP1_SHIFT);
322 }
323
324 static inline u64 get_hop2_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
325 u64 virt_addr)
326 {
327 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
328 ((virt_addr & HOP2_MASK) >> HOP2_SHIFT);
329 }
330
331 static inline u64 get_hop3_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
332 u64 virt_addr)
333 {
334 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
335 ((virt_addr & HOP3_MASK) >> HOP3_SHIFT);
336 }
337
338 static inline u64 get_hop4_pte_addr(struct hl_ctx *ctx, u64 hop_addr,
339 u64 virt_addr)
340 {
341 return hop_addr + ctx->hdev->asic_prop.mmu_pte_size *
342 ((virt_addr & HOP4_MASK) >> HOP4_SHIFT);
343 }
344
345 static inline u64 get_next_hop_addr(u64 curr_pte)
346 {
347 if (curr_pte & PAGE_PRESENT_MASK)
348 return curr_pte & PHYS_ADDR_MASK;
349 else
350 return ULLONG_MAX;
351 }
352
353 static int mmu_show(struct seq_file *s, void *data)
354 {
355 struct hl_debugfs_entry *entry = s->private;
356 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
357 struct hl_device *hdev = dev_entry->hdev;
358 struct hl_ctx *ctx = hdev->user_ctx;
359
360 u64 hop0_addr = 0, hop0_pte_addr = 0, hop0_pte = 0,
361 hop1_addr = 0, hop1_pte_addr = 0, hop1_pte = 0,
362 hop2_addr = 0, hop2_pte_addr = 0, hop2_pte = 0,
363 hop3_addr = 0, hop3_pte_addr = 0, hop3_pte = 0,
364 hop4_addr = 0, hop4_pte_addr = 0, hop4_pte = 0,
365 virt_addr = dev_entry->mmu_addr;
366
367 if (!hdev->mmu_enable)
368 return 0;
369
370 if (!ctx) {
371 dev_err(hdev->dev, "no ctx available\n");
372 return 0;
373 }
374
375 mutex_lock(&ctx->mmu_lock);
376
377 /* the following lookup is copied from unmap() in mmu.c */
378
379 hop0_addr = get_hop0_addr(ctx);
380 hop0_pte_addr = get_hop0_pte_addr(ctx, hop0_addr, virt_addr);
381 hop0_pte = hdev->asic_funcs->read_pte(hdev, hop0_pte_addr);
382 hop1_addr = get_next_hop_addr(hop0_pte);
383
384 if (hop1_addr == ULLONG_MAX)
385 goto not_mapped;
386
387 hop1_pte_addr = get_hop1_pte_addr(ctx, hop1_addr, virt_addr);
388 hop1_pte = hdev->asic_funcs->read_pte(hdev, hop1_pte_addr);
389 hop2_addr = get_next_hop_addr(hop1_pte);
390
391 if (hop2_addr == ULLONG_MAX)
392 goto not_mapped;
393
394 hop2_pte_addr = get_hop2_pte_addr(ctx, hop2_addr, virt_addr);
395 hop2_pte = hdev->asic_funcs->read_pte(hdev, hop2_pte_addr);
396 hop3_addr = get_next_hop_addr(hop2_pte);
397
398 if (hop3_addr == ULLONG_MAX)
399 goto not_mapped;
400
401 hop3_pte_addr = get_hop3_pte_addr(ctx, hop3_addr, virt_addr);
402 hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr);
403
404 if (!(hop3_pte & LAST_MASK)) {
405 hop4_addr = get_next_hop_addr(hop3_pte);
406
407 if (hop4_addr == ULLONG_MAX)
408 goto not_mapped;
409
410 hop4_pte_addr = get_hop4_pte_addr(ctx, hop4_addr, virt_addr);
411 hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr);
412 if (!(hop4_pte & PAGE_PRESENT_MASK))
413 goto not_mapped;
414 } else {
415 if (!(hop3_pte & PAGE_PRESENT_MASK))
416 goto not_mapped;
417 }
418
419 seq_printf(s, "asid: %u, virt_addr: 0x%llx\n",
420 dev_entry->mmu_asid, dev_entry->mmu_addr);
421
422 seq_printf(s, "hop0_addr: 0x%llx\n", hop0_addr);
423 seq_printf(s, "hop0_pte_addr: 0x%llx\n", hop0_pte_addr);
424 seq_printf(s, "hop0_pte: 0x%llx\n", hop0_pte);
425
426 seq_printf(s, "hop1_addr: 0x%llx\n", hop1_addr);
427 seq_printf(s, "hop1_pte_addr: 0x%llx\n", hop1_pte_addr);
428 seq_printf(s, "hop1_pte: 0x%llx\n", hop1_pte);
429
430 seq_printf(s, "hop2_addr: 0x%llx\n", hop2_addr);
431 seq_printf(s, "hop2_pte_addr: 0x%llx\n", hop2_pte_addr);
432 seq_printf(s, "hop2_pte: 0x%llx\n", hop2_pte);
433
434 seq_printf(s, "hop3_addr: 0x%llx\n", hop3_addr);
435 seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr);
436 seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte);
437
438 if (!(hop3_pte & LAST_MASK)) {
439 seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
440 seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
441 seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
442 }
443
444 goto out;
445
446 not_mapped:
447 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
448 virt_addr);
449 out:
450 mutex_unlock(&ctx->mmu_lock);
451
452 return 0;
453 }
454
455 static ssize_t mmu_write(struct file *file, const char __user *buf,
456 size_t count, loff_t *f_pos)
457 {
458 struct seq_file *s = file->private_data;
459 struct hl_debugfs_entry *entry = s->private;
460 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
461 struct hl_device *hdev = dev_entry->hdev;
462 char kbuf[MMU_KBUF_SIZE], asid_kbuf[MMU_ASID_BUF_SIZE],
463 addr_kbuf[MMU_ADDR_BUF_SIZE];
464 char *c;
465 ssize_t rc;
466
467 if (!hdev->mmu_enable)
468 return count;
469
470 memset(kbuf, 0, sizeof(kbuf));
471 memset(asid_kbuf, 0, sizeof(asid_kbuf));
472 memset(addr_kbuf, 0, sizeof(addr_kbuf));
473
474 if (copy_from_user(kbuf, buf, count))
475 goto err;
476
477 kbuf[MMU_KBUF_SIZE - 1] = 0;
478
479 c = strchr(kbuf, ' ');
480 if (!c)
481 goto err;
482
483 memcpy(asid_kbuf, kbuf, c - kbuf);
484
485 rc = kstrtouint(asid_kbuf, 10, &dev_entry->mmu_asid);
486 if (rc)
487 goto err;
488
489 c = strstr(kbuf, " 0x");
490 if (!c)
491 goto err;
492
493 c += 3;
494 memcpy(addr_kbuf, c, (kbuf + count) - c);
495
496 rc = kstrtoull(addr_kbuf, 16, &dev_entry->mmu_addr);
497 if (rc)
498 goto err;
499
500 return count;
501
502 err:
503 dev_err(hdev->dev, "usage: echo <asid> <0xaddr> > mmu\n");
504
505 return -EINVAL;
506 }
507
508 static int device_va_to_pa(struct hl_device *hdev, u64 virt_addr,
509 u64 *phys_addr)
510 {
511 struct hl_ctx *ctx = hdev->user_ctx;
512 u64 hop_addr, hop_pte_addr, hop_pte;
513 int rc = 0;
514
515 if (!ctx) {
516 dev_err(hdev->dev, "no ctx available\n");
517 return -EINVAL;
518 }
519
520 mutex_lock(&ctx->mmu_lock);
521
522 /* hop 0 */
523 hop_addr = get_hop0_addr(ctx);
524 hop_pte_addr = get_hop0_pte_addr(ctx, hop_addr, virt_addr);
525 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
526
527 /* hop 1 */
528 hop_addr = get_next_hop_addr(hop_pte);
529 if (hop_addr == ULLONG_MAX)
530 goto not_mapped;
531 hop_pte_addr = get_hop1_pte_addr(ctx, hop_addr, virt_addr);
532 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
533
534 /* hop 2 */
535 hop_addr = get_next_hop_addr(hop_pte);
536 if (hop_addr == ULLONG_MAX)
537 goto not_mapped;
538 hop_pte_addr = get_hop2_pte_addr(ctx, hop_addr, virt_addr);
539 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
540
541 /* hop 3 */
542 hop_addr = get_next_hop_addr(hop_pte);
543 if (hop_addr == ULLONG_MAX)
544 goto not_mapped;
545 hop_pte_addr = get_hop3_pte_addr(ctx, hop_addr, virt_addr);
546 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
547
548 if (!(hop_pte & LAST_MASK)) {
549 /* hop 4 */
550 hop_addr = get_next_hop_addr(hop_pte);
551 if (hop_addr == ULLONG_MAX)
552 goto not_mapped;
553 hop_pte_addr = get_hop4_pte_addr(ctx, hop_addr, virt_addr);
554 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
555 }
556
557 if (!(hop_pte & PAGE_PRESENT_MASK))
558 goto not_mapped;
559
560 *phys_addr = (hop_pte & PTE_PHYS_ADDR_MASK) | (virt_addr & OFFSET_MASK);
561
562 goto out;
563
564 not_mapped:
565 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
566 virt_addr);
567 rc = -EINVAL;
568 out:
569 mutex_unlock(&ctx->mmu_lock);
570 return rc;
571 }
572
573 static ssize_t hl_data_read32(struct file *f, char __user *buf,
574 size_t count, loff_t *ppos)
575 {
576 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
577 struct hl_device *hdev = entry->hdev;
578 struct asic_fixed_properties *prop = &hdev->asic_prop;
579 char tmp_buf[32];
580 u64 addr = entry->addr;
581 u32 val;
582 ssize_t rc;
583
584 if (*ppos)
585 return 0;
586
587 if (addr >= prop->va_space_dram_start_address &&
588 addr < prop->va_space_dram_end_address &&
589 hdev->mmu_enable &&
590 hdev->dram_supports_virtual_memory) {
591 rc = device_va_to_pa(hdev, entry->addr, &addr);
592 if (rc)
593 return rc;
594 }
595
596 rc = hdev->asic_funcs->debugfs_read32(hdev, addr, &val);
597 if (rc) {
598 dev_err(hdev->dev, "Failed to read from 0x%010llx\n", addr);
599 return rc;
600 }
601
602 sprintf(tmp_buf, "0x%08x\n", val);
603 rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf,
604 strlen(tmp_buf) + 1);
605
606 return rc;
607 }
608
609 static ssize_t hl_data_write32(struct file *f, const char __user *buf,
610 size_t count, loff_t *ppos)
611 {
612 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
613 struct hl_device *hdev = entry->hdev;
614 struct asic_fixed_properties *prop = &hdev->asic_prop;
615 u64 addr = entry->addr;
616 u32 value;
617 ssize_t rc;
618
619 rc = kstrtouint_from_user(buf, count, 16, &value);
620 if (rc)
621 return rc;
622
623 if (addr >= prop->va_space_dram_start_address &&
624 addr < prop->va_space_dram_end_address &&
625 hdev->mmu_enable &&
626 hdev->dram_supports_virtual_memory) {
627 rc = device_va_to_pa(hdev, entry->addr, &addr);
628 if (rc)
629 return rc;
630 }
631
632 rc = hdev->asic_funcs->debugfs_write32(hdev, addr, value);
633 if (rc) {
634 dev_err(hdev->dev, "Failed to write 0x%08x to 0x%010llx\n",
635 value, addr);
636 return rc;
637 }
638
639 return count;
640 }
641
642 static ssize_t hl_get_power_state(struct file *f, char __user *buf,
643 size_t count, loff_t *ppos)
644 {
645 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
646 struct hl_device *hdev = entry->hdev;
647 char tmp_buf[200];
648 ssize_t rc;
649 int i;
650
651 if (*ppos)
652 return 0;
653
654 if (hdev->pdev->current_state == PCI_D0)
655 i = 1;
656 else if (hdev->pdev->current_state == PCI_D3hot)
657 i = 2;
658 else
659 i = 3;
660
661 sprintf(tmp_buf,
662 "current power state: %d\n1 - D0\n2 - D3hot\n3 - Unknown\n", i);
663 rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf,
664 strlen(tmp_buf) + 1);
665
666 return rc;
667 }
668
669 static ssize_t hl_set_power_state(struct file *f, const char __user *buf,
670 size_t count, loff_t *ppos)
671 {
672 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
673 struct hl_device *hdev = entry->hdev;
674 u32 value;
675 ssize_t rc;
676
677 rc = kstrtouint_from_user(buf, count, 10, &value);
678 if (rc)
679 return rc;
680
681 if (value == 1) {
682 pci_set_power_state(hdev->pdev, PCI_D0);
683 pci_restore_state(hdev->pdev);
684 rc = pci_enable_device(hdev->pdev);
685 } else if (value == 2) {
686 pci_save_state(hdev->pdev);
687 pci_disable_device(hdev->pdev);
688 pci_set_power_state(hdev->pdev, PCI_D3hot);
689 } else {
690 dev_dbg(hdev->dev, "invalid power state value %u\n", value);
691 return -EINVAL;
692 }
693
694 return count;
695 }
696
697 static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
698 size_t count, loff_t *ppos)
699 {
700 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
701 struct hl_device *hdev = entry->hdev;
702 char tmp_buf[32];
703 u32 val;
704 ssize_t rc;
705
706 if (*ppos)
707 return 0;
708
709 rc = hl_debugfs_i2c_read(hdev, entry->i2c_bus, entry->i2c_addr,
710 entry->i2c_reg, &val);
711 if (rc) {
712 dev_err(hdev->dev,
713 "Failed to read from I2C bus %d, addr %d, reg %d\n",
714 entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
715 return rc;
716 }
717
718 sprintf(tmp_buf, "0x%02x\n", val);
719 rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf,
720 strlen(tmp_buf) + 1);
721
722 return rc;
723 }
724
725 static ssize_t hl_i2c_data_write(struct file *f, const char __user *buf,
726 size_t count, loff_t *ppos)
727 {
728 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
729 struct hl_device *hdev = entry->hdev;
730 u32 value;
731 ssize_t rc;
732
733 rc = kstrtouint_from_user(buf, count, 16, &value);
734 if (rc)
735 return rc;
736
737 rc = hl_debugfs_i2c_write(hdev, entry->i2c_bus, entry->i2c_addr,
738 entry->i2c_reg, value);
739 if (rc) {
740 dev_err(hdev->dev,
741 "Failed to write 0x%02x to I2C bus %d, addr %d, reg %d\n",
742 value, entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
743 return rc;
744 }
745
746 return count;
747 }
748
749 static ssize_t hl_led0_write(struct file *f, const char __user *buf,
750 size_t count, loff_t *ppos)
751 {
752 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
753 struct hl_device *hdev = entry->hdev;
754 u32 value;
755 ssize_t rc;
756
757 rc = kstrtouint_from_user(buf, count, 10, &value);
758 if (rc)
759 return rc;
760
761 value = value ? 1 : 0;
762
763 hl_debugfs_led_set(hdev, 0, value);
764
765 return count;
766 }
767
768 static ssize_t hl_led1_write(struct file *f, const char __user *buf,
769 size_t count, loff_t *ppos)
770 {
771 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
772 struct hl_device *hdev = entry->hdev;
773 u32 value;
774 ssize_t rc;
775
776 rc = kstrtouint_from_user(buf, count, 10, &value);
777 if (rc)
778 return rc;
779
780 value = value ? 1 : 0;
781
782 hl_debugfs_led_set(hdev, 1, value);
783
784 return count;
785 }
786
787 static ssize_t hl_led2_write(struct file *f, const char __user *buf,
788 size_t count, loff_t *ppos)
789 {
790 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
791 struct hl_device *hdev = entry->hdev;
792 u32 value;
793 ssize_t rc;
794
795 rc = kstrtouint_from_user(buf, count, 10, &value);
796 if (rc)
797 return rc;
798
799 value = value ? 1 : 0;
800
801 hl_debugfs_led_set(hdev, 2, value);
802
803 return count;
804 }
805
806 static ssize_t hl_device_read(struct file *f, char __user *buf,
807 size_t count, loff_t *ppos)
808 {
809 char tmp_buf[200];
810 ssize_t rc;
811
812 if (*ppos)
813 return 0;
814
815 sprintf(tmp_buf,
816 "Valid values: disable, enable, suspend, resume, cpu_timeout\n");
817 rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf,
818 strlen(tmp_buf) + 1);
819
820 return rc;
821 }
822
823 static ssize_t hl_device_write(struct file *f, const char __user *buf,
824 size_t count, loff_t *ppos)
825 {
826 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
827 struct hl_device *hdev = entry->hdev;
828 char data[30];
829
830 /* don't allow partial writes */
831 if (*ppos != 0)
832 return 0;
833
834 simple_write_to_buffer(data, 29, ppos, buf, count);
835
836 if (strncmp("disable", data, strlen("disable")) == 0) {
837 hdev->disabled = true;
838 } else if (strncmp("enable", data, strlen("enable")) == 0) {
839 hdev->disabled = false;
840 } else if (strncmp("suspend", data, strlen("suspend")) == 0) {
841 hdev->asic_funcs->suspend(hdev);
842 } else if (strncmp("resume", data, strlen("resume")) == 0) {
843 hdev->asic_funcs->resume(hdev);
844 } else if (strncmp("cpu_timeout", data, strlen("cpu_timeout")) == 0) {
845 hdev->device_cpu_disabled = true;
846 } else {
847 dev_err(hdev->dev,
848 "Valid values: disable, enable, suspend, resume, cpu_timeout\n");
849 count = -EINVAL;
850 }
851
852 return count;
853 }
854
855 static const struct file_operations hl_data32b_fops = {
856 .owner = THIS_MODULE,
857 .read = hl_data_read32,
858 .write = hl_data_write32
859 };
860
861 static const struct file_operations hl_i2c_data_fops = {
862 .owner = THIS_MODULE,
863 .read = hl_i2c_data_read,
864 .write = hl_i2c_data_write
865 };
866
867 static const struct file_operations hl_power_fops = {
868 .owner = THIS_MODULE,
869 .read = hl_get_power_state,
870 .write = hl_set_power_state
871 };
872
873 static const struct file_operations hl_led0_fops = {
874 .owner = THIS_MODULE,
875 .write = hl_led0_write
876 };
877
878 static const struct file_operations hl_led1_fops = {
879 .owner = THIS_MODULE,
880 .write = hl_led1_write
881 };
882
883 static const struct file_operations hl_led2_fops = {
884 .owner = THIS_MODULE,
885 .write = hl_led2_write
886 };
887
888 static const struct file_operations hl_device_fops = {
889 .owner = THIS_MODULE,
890 .read = hl_device_read,
891 .write = hl_device_write
892 };
893
894 static const struct hl_info_list hl_debugfs_list[] = {
895 {"command_buffers", command_buffers_show, NULL},
896 {"command_submission", command_submission_show, NULL},
897 {"command_submission_jobs", command_submission_jobs_show, NULL},
898 {"userptr", userptr_show, NULL},
899 {"vm", vm_show, NULL},
900 {"mmu", mmu_show, mmu_write},
901 };
902
903 static int hl_debugfs_open(struct inode *inode, struct file *file)
904 {
905 struct hl_debugfs_entry *node = inode->i_private;
906
907 return single_open(file, node->info_ent->show, node);
908 }
909
910 static ssize_t hl_debugfs_write(struct file *file, const char __user *buf,
911 size_t count, loff_t *f_pos)
912 {
913 struct hl_debugfs_entry *node = file->f_inode->i_private;
914
915 if (node->info_ent->write)
916 return node->info_ent->write(file, buf, count, f_pos);
917 else
918 return -EINVAL;
919
920 }
921
922 static const struct file_operations hl_debugfs_fops = {
923 .owner = THIS_MODULE,
924 .open = hl_debugfs_open,
925 .read = seq_read,
926 .write = hl_debugfs_write,
927 .llseek = seq_lseek,
928 .release = single_release,
929 };
930
931 void hl_debugfs_add_device(struct hl_device *hdev)
932 {
933 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
934 int count = ARRAY_SIZE(hl_debugfs_list);
935 struct hl_debugfs_entry *entry;
936 struct dentry *ent;
937 int i;
938
939 dev_entry->hdev = hdev;
940 dev_entry->entry_arr = kmalloc_array(count,
941 sizeof(struct hl_debugfs_entry),
942 GFP_KERNEL);
943 if (!dev_entry->entry_arr)
944 return;
945
946 INIT_LIST_HEAD(&dev_entry->file_list);
947 INIT_LIST_HEAD(&dev_entry->cb_list);
948 INIT_LIST_HEAD(&dev_entry->cs_list);
949 INIT_LIST_HEAD(&dev_entry->cs_job_list);
950 INIT_LIST_HEAD(&dev_entry->userptr_list);
951 INIT_LIST_HEAD(&dev_entry->ctx_mem_hash_list);
952 mutex_init(&dev_entry->file_mutex);
953 spin_lock_init(&dev_entry->cb_spinlock);
954 spin_lock_init(&dev_entry->cs_spinlock);
955 spin_lock_init(&dev_entry->cs_job_spinlock);
956 spin_lock_init(&dev_entry->userptr_spinlock);
957 spin_lock_init(&dev_entry->ctx_mem_hash_spinlock);
958
959 dev_entry->root = debugfs_create_dir(dev_name(hdev->dev),
960 hl_debug_root);
961
962 debugfs_create_x64("addr",
963 0644,
964 dev_entry->root,
965 &dev_entry->addr);
966
967 debugfs_create_file("data32",
968 0644,
969 dev_entry->root,
970 dev_entry,
971 &hl_data32b_fops);
972
973 debugfs_create_file("set_power_state",
974 0200,
975 dev_entry->root,
976 dev_entry,
977 &hl_power_fops);
978
979 debugfs_create_u8("i2c_bus",
980 0644,
981 dev_entry->root,
982 &dev_entry->i2c_bus);
983
984 debugfs_create_u8("i2c_addr",
985 0644,
986 dev_entry->root,
987 &dev_entry->i2c_addr);
988
989 debugfs_create_u8("i2c_reg",
990 0644,
991 dev_entry->root,
992 &dev_entry->i2c_reg);
993
994 debugfs_create_file("i2c_data",
995 0644,
996 dev_entry->root,
997 dev_entry,
998 &hl_i2c_data_fops);
999
1000 debugfs_create_file("led0",
1001 0200,
1002 dev_entry->root,
1003 dev_entry,
1004 &hl_led0_fops);
1005
1006 debugfs_create_file("led1",
1007 0200,
1008 dev_entry->root,
1009 dev_entry,
1010 &hl_led1_fops);
1011
1012 debugfs_create_file("led2",
1013 0200,
1014 dev_entry->root,
1015 dev_entry,
1016 &hl_led2_fops);
1017
1018 debugfs_create_file("device",
1019 0200,
1020 dev_entry->root,
1021 dev_entry,
1022 &hl_device_fops);
1023
1024 for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) {
1025
1026 ent = debugfs_create_file(hl_debugfs_list[i].name,
1027 0444,
1028 dev_entry->root,
1029 entry,
1030 &hl_debugfs_fops);
1031 entry->dent = ent;
1032 entry->info_ent = &hl_debugfs_list[i];
1033 entry->dev_entry = dev_entry;
1034 }
1035 }
1036
1037 void hl_debugfs_remove_device(struct hl_device *hdev)
1038 {
1039 struct hl_dbg_device_entry *entry = &hdev->hl_debugfs;
1040
1041 debugfs_remove_recursive(entry->root);
1042
1043 mutex_destroy(&entry->file_mutex);
1044 kfree(entry->entry_arr);
1045 }
1046
1047 void hl_debugfs_add_file(struct hl_fpriv *hpriv)
1048 {
1049 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1050
1051 mutex_lock(&dev_entry->file_mutex);
1052 list_add(&hpriv->debugfs_list, &dev_entry->file_list);
1053 mutex_unlock(&dev_entry->file_mutex);
1054 }
1055
1056 void hl_debugfs_remove_file(struct hl_fpriv *hpriv)
1057 {
1058 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1059
1060 mutex_lock(&dev_entry->file_mutex);
1061 list_del(&hpriv->debugfs_list);
1062 mutex_unlock(&dev_entry->file_mutex);
1063 }
1064
1065 void hl_debugfs_add_cb(struct hl_cb *cb)
1066 {
1067 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1068
1069 spin_lock(&dev_entry->cb_spinlock);
1070 list_add(&cb->debugfs_list, &dev_entry->cb_list);
1071 spin_unlock(&dev_entry->cb_spinlock);
1072 }
1073
1074 void hl_debugfs_remove_cb(struct hl_cb *cb)
1075 {
1076 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1077
1078 spin_lock(&dev_entry->cb_spinlock);
1079 list_del(&cb->debugfs_list);
1080 spin_unlock(&dev_entry->cb_spinlock);
1081 }
1082
1083 void hl_debugfs_add_cs(struct hl_cs *cs)
1084 {
1085 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1086
1087 spin_lock(&dev_entry->cs_spinlock);
1088 list_add(&cs->debugfs_list, &dev_entry->cs_list);
1089 spin_unlock(&dev_entry->cs_spinlock);
1090 }
1091
1092 void hl_debugfs_remove_cs(struct hl_cs *cs)
1093 {
1094 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1095
1096 spin_lock(&dev_entry->cs_spinlock);
1097 list_del(&cs->debugfs_list);
1098 spin_unlock(&dev_entry->cs_spinlock);
1099 }
1100
1101 void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job)
1102 {
1103 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1104
1105 spin_lock(&dev_entry->cs_job_spinlock);
1106 list_add(&job->debugfs_list, &dev_entry->cs_job_list);
1107 spin_unlock(&dev_entry->cs_job_spinlock);
1108 }
1109
1110 void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job)
1111 {
1112 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1113
1114 spin_lock(&dev_entry->cs_job_spinlock);
1115 list_del(&job->debugfs_list);
1116 spin_unlock(&dev_entry->cs_job_spinlock);
1117 }
1118
1119 void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr)
1120 {
1121 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1122
1123 spin_lock(&dev_entry->userptr_spinlock);
1124 list_add(&userptr->debugfs_list, &dev_entry->userptr_list);
1125 spin_unlock(&dev_entry->userptr_spinlock);
1126 }
1127
1128 void hl_debugfs_remove_userptr(struct hl_device *hdev,
1129 struct hl_userptr *userptr)
1130 {
1131 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1132
1133 spin_lock(&dev_entry->userptr_spinlock);
1134 list_del(&userptr->debugfs_list);
1135 spin_unlock(&dev_entry->userptr_spinlock);
1136 }
1137
1138 void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1139 {
1140 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1141
1142 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1143 list_add(&ctx->debugfs_list, &dev_entry->ctx_mem_hash_list);
1144 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1145 }
1146
1147 void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1148 {
1149 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1150
1151 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1152 list_del(&ctx->debugfs_list);
1153 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1154 }
1155
1156 void __init hl_debugfs_init(void)
1157 {
1158 hl_debug_root = debugfs_create_dir("habanalabs", NULL);
1159 }
1160
1161 void hl_debugfs_fini(void)
1162 {
1163 debugfs_remove_recursive(hl_debug_root);
1164 }
Ubuntu Jammy Linux kernel mirror