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
hl_debugfs_i2c_read(struct hl_device * hdev,u8 i2c_bus,u8 i2c_addr,u8 i2c_reg,u32 * val)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
hl_debugfs_i2c_write(struct hl_device * hdev,u8 i2c_bus,u8 i2c_addr,u8 i2c_reg,u32 val)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
hl_debugfs_led_set(struct hl_device * hdev,u8 led,u8 state)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
command_buffers_show(struct seq_file * s,void * data)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
command_submission_show(struct seq_file * s,void * data)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
command_submission_jobs_show(struct seq_file * s,void * data)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
userptr_show(struct seq_file * s,void * data)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
vm_show(struct seq_file * s,void * data)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 */
get_hop0_addr(struct hl_ctx * ctx)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
get_hop0_pte_addr(struct hl_ctx * ctx,u64 hop_addr,u64 virt_addr)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
get_hop1_pte_addr(struct hl_ctx * ctx,u64 hop_addr,u64 virt_addr)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
get_hop2_pte_addr(struct hl_ctx * ctx,u64 hop_addr,u64 virt_addr)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
get_hop3_pte_addr(struct hl_ctx * ctx,u64 hop_addr,u64 virt_addr)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
get_hop4_pte_addr(struct hl_ctx * ctx,u64 hop_addr,u64 virt_addr)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
get_next_hop_addr(u64 curr_pte)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
mmu_show(struct seq_file * s,void * data)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;
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 (dev_entry->mmu_asid == HL_KERNEL_ASID_ID)
371 ctx = hdev->kernel_ctx;
372 else
373 ctx = hdev->compute_ctx;
374
375 if (!ctx) {
376 dev_err(hdev->dev, "no ctx available\n");
377 return 0;
378 }
379
380 mutex_lock(&ctx->mmu_lock);
381
382 /* the following lookup is copied from unmap() in mmu.c */
383
384 hop0_addr = get_hop0_addr(ctx);
385 hop0_pte_addr = get_hop0_pte_addr(ctx, hop0_addr, virt_addr);
386 hop0_pte = hdev->asic_funcs->read_pte(hdev, hop0_pte_addr);
387 hop1_addr = get_next_hop_addr(hop0_pte);
388
389 if (hop1_addr == ULLONG_MAX)
390 goto not_mapped;
391
392 hop1_pte_addr = get_hop1_pte_addr(ctx, hop1_addr, virt_addr);
393 hop1_pte = hdev->asic_funcs->read_pte(hdev, hop1_pte_addr);
394 hop2_addr = get_next_hop_addr(hop1_pte);
395
396 if (hop2_addr == ULLONG_MAX)
397 goto not_mapped;
398
399 hop2_pte_addr = get_hop2_pte_addr(ctx, hop2_addr, virt_addr);
400 hop2_pte = hdev->asic_funcs->read_pte(hdev, hop2_pte_addr);
401 hop3_addr = get_next_hop_addr(hop2_pte);
402
403 if (hop3_addr == ULLONG_MAX)
404 goto not_mapped;
405
406 hop3_pte_addr = get_hop3_pte_addr(ctx, hop3_addr, virt_addr);
407 hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr);
408
409 if (!(hop3_pte & LAST_MASK)) {
410 hop4_addr = get_next_hop_addr(hop3_pte);
411
412 if (hop4_addr == ULLONG_MAX)
413 goto not_mapped;
414
415 hop4_pte_addr = get_hop4_pte_addr(ctx, hop4_addr, virt_addr);
416 hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr);
417 if (!(hop4_pte & PAGE_PRESENT_MASK))
418 goto not_mapped;
419 } else {
420 if (!(hop3_pte & PAGE_PRESENT_MASK))
421 goto not_mapped;
422 }
423
424 seq_printf(s, "asid: %u, virt_addr: 0x%llx\n",
425 dev_entry->mmu_asid, dev_entry->mmu_addr);
426
427 seq_printf(s, "hop0_addr: 0x%llx\n", hop0_addr);
428 seq_printf(s, "hop0_pte_addr: 0x%llx\n", hop0_pte_addr);
429 seq_printf(s, "hop0_pte: 0x%llx\n", hop0_pte);
430
431 seq_printf(s, "hop1_addr: 0x%llx\n", hop1_addr);
432 seq_printf(s, "hop1_pte_addr: 0x%llx\n", hop1_pte_addr);
433 seq_printf(s, "hop1_pte: 0x%llx\n", hop1_pte);
434
435 seq_printf(s, "hop2_addr: 0x%llx\n", hop2_addr);
436 seq_printf(s, "hop2_pte_addr: 0x%llx\n", hop2_pte_addr);
437 seq_printf(s, "hop2_pte: 0x%llx\n", hop2_pte);
438
439 seq_printf(s, "hop3_addr: 0x%llx\n", hop3_addr);
440 seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr);
441 seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte);
442
443 if (!(hop3_pte & LAST_MASK)) {
444 seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
445 seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
446 seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
447 }
448
449 goto out;
450
451 not_mapped:
452 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
453 virt_addr);
454 out:
455 mutex_unlock(&ctx->mmu_lock);
456
457 return 0;
458 }
459
mmu_write(struct file * file,const char __user * buf,size_t count,loff_t * f_pos)460 static ssize_t mmu_write(struct file *file, const char __user *buf,
461 size_t count, loff_t *f_pos)
462 {
463 struct seq_file *s = file->private_data;
464 struct hl_debugfs_entry *entry = s->private;
465 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
466 struct hl_device *hdev = dev_entry->hdev;
467 char kbuf[MMU_KBUF_SIZE];
468 char *c;
469 ssize_t rc;
470
471 if (!hdev->mmu_enable)
472 return count;
473
474 if (count > sizeof(kbuf) - 1)
475 goto err;
476 if (copy_from_user(kbuf, buf, count))
477 goto err;
478 kbuf[count] = 0;
479
480 c = strchr(kbuf, ' ');
481 if (!c)
482 goto err;
483 *c = '\0';
484
485 rc = kstrtouint(kbuf, 10, &dev_entry->mmu_asid);
486 if (rc)
487 goto err;
488
489 if (strncmp(c+1, "0x", 2))
490 goto err;
491 rc = kstrtoull(c+3, 16, &dev_entry->mmu_addr);
492 if (rc)
493 goto err;
494
495 return count;
496
497 err:
498 dev_err(hdev->dev, "usage: echo <asid> <0xaddr> > mmu\n");
499
500 return -EINVAL;
501 }
502
engines_show(struct seq_file * s,void * data)503 static int engines_show(struct seq_file *s, void *data)
504 {
505 struct hl_debugfs_entry *entry = s->private;
506 struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
507 struct hl_device *hdev = dev_entry->hdev;
508
509 hdev->asic_funcs->is_device_idle(hdev, NULL, s);
510
511 return 0;
512 }
513
hl_is_device_va(struct hl_device * hdev,u64 addr)514 static bool hl_is_device_va(struct hl_device *hdev, u64 addr)
515 {
516 struct asic_fixed_properties *prop = &hdev->asic_prop;
517
518 if (!hdev->mmu_enable)
519 goto out;
520
521 if (hdev->dram_supports_virtual_memory &&
522 addr >= prop->va_space_dram_start_address &&
523 addr < prop->va_space_dram_end_address)
524 return true;
525
526 if (addr >= prop->va_space_host_start_address &&
527 addr < prop->va_space_host_end_address)
528 return true;
529 out:
530 return false;
531 }
532
device_va_to_pa(struct hl_device * hdev,u64 virt_addr,u64 * phys_addr)533 static int device_va_to_pa(struct hl_device *hdev, u64 virt_addr,
534 u64 *phys_addr)
535 {
536 struct hl_ctx *ctx = hdev->compute_ctx;
537 u64 hop_addr, hop_pte_addr, hop_pte;
538 u64 offset_mask = HOP4_MASK | OFFSET_MASK;
539 int rc = 0;
540
541 if (!ctx) {
542 dev_err(hdev->dev, "no ctx available\n");
543 return -EINVAL;
544 }
545
546 mutex_lock(&ctx->mmu_lock);
547
548 /* hop 0 */
549 hop_addr = get_hop0_addr(ctx);
550 hop_pte_addr = get_hop0_pte_addr(ctx, hop_addr, virt_addr);
551 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
552
553 /* hop 1 */
554 hop_addr = get_next_hop_addr(hop_pte);
555 if (hop_addr == ULLONG_MAX)
556 goto not_mapped;
557 hop_pte_addr = get_hop1_pte_addr(ctx, hop_addr, virt_addr);
558 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
559
560 /* hop 2 */
561 hop_addr = get_next_hop_addr(hop_pte);
562 if (hop_addr == ULLONG_MAX)
563 goto not_mapped;
564 hop_pte_addr = get_hop2_pte_addr(ctx, hop_addr, virt_addr);
565 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
566
567 /* hop 3 */
568 hop_addr = get_next_hop_addr(hop_pte);
569 if (hop_addr == ULLONG_MAX)
570 goto not_mapped;
571 hop_pte_addr = get_hop3_pte_addr(ctx, hop_addr, virt_addr);
572 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
573
574 if (!(hop_pte & LAST_MASK)) {
575 /* hop 4 */
576 hop_addr = get_next_hop_addr(hop_pte);
577 if (hop_addr == ULLONG_MAX)
578 goto not_mapped;
579 hop_pte_addr = get_hop4_pte_addr(ctx, hop_addr, virt_addr);
580 hop_pte = hdev->asic_funcs->read_pte(hdev, hop_pte_addr);
581
582 offset_mask = OFFSET_MASK;
583 }
584
585 if (!(hop_pte & PAGE_PRESENT_MASK))
586 goto not_mapped;
587
588 *phys_addr = (hop_pte & ~offset_mask) | (virt_addr & offset_mask);
589
590 goto out;
591
592 not_mapped:
593 dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n",
594 virt_addr);
595 rc = -EINVAL;
596 out:
597 mutex_unlock(&ctx->mmu_lock);
598 return rc;
599 }
600
hl_data_read32(struct file * f,char __user * buf,size_t count,loff_t * ppos)601 static ssize_t hl_data_read32(struct file *f, char __user *buf,
602 size_t count, loff_t *ppos)
603 {
604 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
605 struct hl_device *hdev = entry->hdev;
606 char tmp_buf[32];
607 u64 addr = entry->addr;
608 u32 val;
609 ssize_t rc;
610
611 if (*ppos)
612 return 0;
613
614 if (hl_is_device_va(hdev, addr)) {
615 rc = device_va_to_pa(hdev, addr, &addr);
616 if (rc)
617 return rc;
618 }
619
620 rc = hdev->asic_funcs->debugfs_read32(hdev, addr, &val);
621 if (rc) {
622 dev_err(hdev->dev, "Failed to read from 0x%010llx\n", addr);
623 return rc;
624 }
625
626 sprintf(tmp_buf, "0x%08x\n", val);
627 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
628 strlen(tmp_buf));
629 }
630
hl_data_write32(struct file * f,const char __user * buf,size_t count,loff_t * ppos)631 static ssize_t hl_data_write32(struct file *f, const char __user *buf,
632 size_t count, loff_t *ppos)
633 {
634 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
635 struct hl_device *hdev = entry->hdev;
636 u64 addr = entry->addr;
637 u32 value;
638 ssize_t rc;
639
640 rc = kstrtouint_from_user(buf, count, 16, &value);
641 if (rc)
642 return rc;
643
644 if (hl_is_device_va(hdev, addr)) {
645 rc = device_va_to_pa(hdev, addr, &addr);
646 if (rc)
647 return rc;
648 }
649
650 rc = hdev->asic_funcs->debugfs_write32(hdev, addr, value);
651 if (rc) {
652 dev_err(hdev->dev, "Failed to write 0x%08x to 0x%010llx\n",
653 value, addr);
654 return rc;
655 }
656
657 return count;
658 }
659
hl_get_power_state(struct file * f,char __user * buf,size_t count,loff_t * ppos)660 static ssize_t hl_get_power_state(struct file *f, char __user *buf,
661 size_t count, loff_t *ppos)
662 {
663 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
664 struct hl_device *hdev = entry->hdev;
665 char tmp_buf[200];
666 int i;
667
668 if (*ppos)
669 return 0;
670
671 if (hdev->pdev->current_state == PCI_D0)
672 i = 1;
673 else if (hdev->pdev->current_state == PCI_D3hot)
674 i = 2;
675 else
676 i = 3;
677
678 sprintf(tmp_buf,
679 "current power state: %d\n1 - D0\n2 - D3hot\n3 - Unknown\n", i);
680 return simple_read_from_buffer(buf, count, ppos, tmp_buf,
681 strlen(tmp_buf));
682 }
683
hl_set_power_state(struct file * f,const char __user * buf,size_t count,loff_t * ppos)684 static ssize_t hl_set_power_state(struct file *f, const char __user *buf,
685 size_t count, loff_t *ppos)
686 {
687 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
688 struct hl_device *hdev = entry->hdev;
689 u32 value;
690 ssize_t rc;
691
692 rc = kstrtouint_from_user(buf, count, 10, &value);
693 if (rc)
694 return rc;
695
696 if (value == 1) {
697 pci_set_power_state(hdev->pdev, PCI_D0);
698 pci_restore_state(hdev->pdev);
699 rc = pci_enable_device(hdev->pdev);
700 } else if (value == 2) {
701 pci_save_state(hdev->pdev);
702 pci_disable_device(hdev->pdev);
703 pci_set_power_state(hdev->pdev, PCI_D3hot);
704 } else {
705 dev_dbg(hdev->dev, "invalid power state value %u\n", value);
706 return -EINVAL;
707 }
708
709 return count;
710 }
711
hl_i2c_data_read(struct file * f,char __user * buf,size_t count,loff_t * ppos)712 static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
713 size_t count, loff_t *ppos)
714 {
715 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
716 struct hl_device *hdev = entry->hdev;
717 char tmp_buf[32];
718 u32 val;
719 ssize_t rc;
720
721 if (*ppos)
722 return 0;
723
724 rc = hl_debugfs_i2c_read(hdev, entry->i2c_bus, entry->i2c_addr,
725 entry->i2c_reg, &val);
726 if (rc) {
727 dev_err(hdev->dev,
728 "Failed to read from I2C bus %d, addr %d, reg %d\n",
729 entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
730 return rc;
731 }
732
733 sprintf(tmp_buf, "0x%02x\n", val);
734 rc = simple_read_from_buffer(buf, count, ppos, tmp_buf,
735 strlen(tmp_buf));
736
737 return rc;
738 }
739
hl_i2c_data_write(struct file * f,const char __user * buf,size_t count,loff_t * ppos)740 static ssize_t hl_i2c_data_write(struct file *f, const char __user *buf,
741 size_t count, loff_t *ppos)
742 {
743 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
744 struct hl_device *hdev = entry->hdev;
745 u32 value;
746 ssize_t rc;
747
748 rc = kstrtouint_from_user(buf, count, 16, &value);
749 if (rc)
750 return rc;
751
752 rc = hl_debugfs_i2c_write(hdev, entry->i2c_bus, entry->i2c_addr,
753 entry->i2c_reg, value);
754 if (rc) {
755 dev_err(hdev->dev,
756 "Failed to write 0x%02x to I2C bus %d, addr %d, reg %d\n",
757 value, entry->i2c_bus, entry->i2c_addr, entry->i2c_reg);
758 return rc;
759 }
760
761 return count;
762 }
763
hl_led0_write(struct file * f,const char __user * buf,size_t count,loff_t * ppos)764 static ssize_t hl_led0_write(struct file *f, const char __user *buf,
765 size_t count, loff_t *ppos)
766 {
767 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
768 struct hl_device *hdev = entry->hdev;
769 u32 value;
770 ssize_t rc;
771
772 rc = kstrtouint_from_user(buf, count, 10, &value);
773 if (rc)
774 return rc;
775
776 value = value ? 1 : 0;
777
778 hl_debugfs_led_set(hdev, 0, value);
779
780 return count;
781 }
782
hl_led1_write(struct file * f,const char __user * buf,size_t count,loff_t * ppos)783 static ssize_t hl_led1_write(struct file *f, const char __user *buf,
784 size_t count, loff_t *ppos)
785 {
786 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
787 struct hl_device *hdev = entry->hdev;
788 u32 value;
789 ssize_t rc;
790
791 rc = kstrtouint_from_user(buf, count, 10, &value);
792 if (rc)
793 return rc;
794
795 value = value ? 1 : 0;
796
797 hl_debugfs_led_set(hdev, 1, value);
798
799 return count;
800 }
801
hl_led2_write(struct file * f,const char __user * buf,size_t count,loff_t * ppos)802 static ssize_t hl_led2_write(struct file *f, const char __user *buf,
803 size_t count, loff_t *ppos)
804 {
805 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
806 struct hl_device *hdev = entry->hdev;
807 u32 value;
808 ssize_t rc;
809
810 rc = kstrtouint_from_user(buf, count, 10, &value);
811 if (rc)
812 return rc;
813
814 value = value ? 1 : 0;
815
816 hl_debugfs_led_set(hdev, 2, value);
817
818 return count;
819 }
820
hl_device_read(struct file * f,char __user * buf,size_t count,loff_t * ppos)821 static ssize_t hl_device_read(struct file *f, char __user *buf,
822 size_t count, loff_t *ppos)
823 {
824 static const char *help =
825 "Valid values: disable, enable, suspend, resume, cpu_timeout\n";
826 return simple_read_from_buffer(buf, count, ppos, help, strlen(help));
827 }
828
hl_device_write(struct file * f,const char __user * buf,size_t count,loff_t * ppos)829 static ssize_t hl_device_write(struct file *f, const char __user *buf,
830 size_t count, loff_t *ppos)
831 {
832 struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
833 struct hl_device *hdev = entry->hdev;
834 char data[30] = {0};
835
836 /* don't allow partial writes */
837 if (*ppos != 0)
838 return 0;
839
840 simple_write_to_buffer(data, 29, ppos, buf, count);
841
842 if (strncmp("disable", data, strlen("disable")) == 0) {
843 hdev->disabled = true;
844 } else if (strncmp("enable", data, strlen("enable")) == 0) {
845 hdev->disabled = false;
846 } else if (strncmp("suspend", data, strlen("suspend")) == 0) {
847 hdev->asic_funcs->suspend(hdev);
848 } else if (strncmp("resume", data, strlen("resume")) == 0) {
849 hdev->asic_funcs->resume(hdev);
850 } else if (strncmp("cpu_timeout", data, strlen("cpu_timeout")) == 0) {
851 hdev->device_cpu_disabled = true;
852 } else {
853 dev_err(hdev->dev,
854 "Valid values: disable, enable, suspend, resume, cpu_timeout\n");
855 count = -EINVAL;
856 }
857
858 return count;
859 }
860
861 static const struct file_operations hl_data32b_fops = {
862 .owner = THIS_MODULE,
863 .read = hl_data_read32,
864 .write = hl_data_write32
865 };
866
867 static const struct file_operations hl_i2c_data_fops = {
868 .owner = THIS_MODULE,
869 .read = hl_i2c_data_read,
870 .write = hl_i2c_data_write
871 };
872
873 static const struct file_operations hl_power_fops = {
874 .owner = THIS_MODULE,
875 .read = hl_get_power_state,
876 .write = hl_set_power_state
877 };
878
879 static const struct file_operations hl_led0_fops = {
880 .owner = THIS_MODULE,
881 .write = hl_led0_write
882 };
883
884 static const struct file_operations hl_led1_fops = {
885 .owner = THIS_MODULE,
886 .write = hl_led1_write
887 };
888
889 static const struct file_operations hl_led2_fops = {
890 .owner = THIS_MODULE,
891 .write = hl_led2_write
892 };
893
894 static const struct file_operations hl_device_fops = {
895 .owner = THIS_MODULE,
896 .read = hl_device_read,
897 .write = hl_device_write
898 };
899
900 static const struct hl_info_list hl_debugfs_list[] = {
901 {"command_buffers", command_buffers_show, NULL},
902 {"command_submission", command_submission_show, NULL},
903 {"command_submission_jobs", command_submission_jobs_show, NULL},
904 {"userptr", userptr_show, NULL},
905 {"vm", vm_show, NULL},
906 {"mmu", mmu_show, mmu_write},
907 {"engines", engines_show, NULL}
908 };
909
hl_debugfs_open(struct inode * inode,struct file * file)910 static int hl_debugfs_open(struct inode *inode, struct file *file)
911 {
912 struct hl_debugfs_entry *node = inode->i_private;
913
914 return single_open(file, node->info_ent->show, node);
915 }
916
hl_debugfs_write(struct file * file,const char __user * buf,size_t count,loff_t * f_pos)917 static ssize_t hl_debugfs_write(struct file *file, const char __user *buf,
918 size_t count, loff_t *f_pos)
919 {
920 struct hl_debugfs_entry *node = file->f_inode->i_private;
921
922 if (node->info_ent->write)
923 return node->info_ent->write(file, buf, count, f_pos);
924 else
925 return -EINVAL;
926
927 }
928
929 static const struct file_operations hl_debugfs_fops = {
930 .owner = THIS_MODULE,
931 .open = hl_debugfs_open,
932 .read = seq_read,
933 .write = hl_debugfs_write,
934 .llseek = seq_lseek,
935 .release = single_release,
936 };
937
hl_debugfs_add_device(struct hl_device * hdev)938 void hl_debugfs_add_device(struct hl_device *hdev)
939 {
940 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
941 int count = ARRAY_SIZE(hl_debugfs_list);
942 struct hl_debugfs_entry *entry;
943 struct dentry *ent;
944 int i;
945
946 dev_entry->hdev = hdev;
947 dev_entry->entry_arr = kmalloc_array(count,
948 sizeof(struct hl_debugfs_entry),
949 GFP_KERNEL);
950 if (!dev_entry->entry_arr)
951 return;
952
953 INIT_LIST_HEAD(&dev_entry->file_list);
954 INIT_LIST_HEAD(&dev_entry->cb_list);
955 INIT_LIST_HEAD(&dev_entry->cs_list);
956 INIT_LIST_HEAD(&dev_entry->cs_job_list);
957 INIT_LIST_HEAD(&dev_entry->userptr_list);
958 INIT_LIST_HEAD(&dev_entry->ctx_mem_hash_list);
959 mutex_init(&dev_entry->file_mutex);
960 spin_lock_init(&dev_entry->cb_spinlock);
961 spin_lock_init(&dev_entry->cs_spinlock);
962 spin_lock_init(&dev_entry->cs_job_spinlock);
963 spin_lock_init(&dev_entry->userptr_spinlock);
964 spin_lock_init(&dev_entry->ctx_mem_hash_spinlock);
965
966 dev_entry->root = debugfs_create_dir(dev_name(hdev->dev),
967 hl_debug_root);
968
969 debugfs_create_x64("addr",
970 0644,
971 dev_entry->root,
972 &dev_entry->addr);
973
974 debugfs_create_file("data32",
975 0644,
976 dev_entry->root,
977 dev_entry,
978 &hl_data32b_fops);
979
980 debugfs_create_file("set_power_state",
981 0200,
982 dev_entry->root,
983 dev_entry,
984 &hl_power_fops);
985
986 debugfs_create_u8("i2c_bus",
987 0644,
988 dev_entry->root,
989 &dev_entry->i2c_bus);
990
991 debugfs_create_u8("i2c_addr",
992 0644,
993 dev_entry->root,
994 &dev_entry->i2c_addr);
995
996 debugfs_create_u8("i2c_reg",
997 0644,
998 dev_entry->root,
999 &dev_entry->i2c_reg);
1000
1001 debugfs_create_file("i2c_data",
1002 0644,
1003 dev_entry->root,
1004 dev_entry,
1005 &hl_i2c_data_fops);
1006
1007 debugfs_create_file("led0",
1008 0200,
1009 dev_entry->root,
1010 dev_entry,
1011 &hl_led0_fops);
1012
1013 debugfs_create_file("led1",
1014 0200,
1015 dev_entry->root,
1016 dev_entry,
1017 &hl_led1_fops);
1018
1019 debugfs_create_file("led2",
1020 0200,
1021 dev_entry->root,
1022 dev_entry,
1023 &hl_led2_fops);
1024
1025 debugfs_create_file("device",
1026 0200,
1027 dev_entry->root,
1028 dev_entry,
1029 &hl_device_fops);
1030
1031 for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) {
1032
1033 ent = debugfs_create_file(hl_debugfs_list[i].name,
1034 0444,
1035 dev_entry->root,
1036 entry,
1037 &hl_debugfs_fops);
1038 entry->dent = ent;
1039 entry->info_ent = &hl_debugfs_list[i];
1040 entry->dev_entry = dev_entry;
1041 }
1042 }
1043
hl_debugfs_remove_device(struct hl_device * hdev)1044 void hl_debugfs_remove_device(struct hl_device *hdev)
1045 {
1046 struct hl_dbg_device_entry *entry = &hdev->hl_debugfs;
1047
1048 debugfs_remove_recursive(entry->root);
1049
1050 mutex_destroy(&entry->file_mutex);
1051 kfree(entry->entry_arr);
1052 }
1053
hl_debugfs_add_file(struct hl_fpriv * hpriv)1054 void hl_debugfs_add_file(struct hl_fpriv *hpriv)
1055 {
1056 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1057
1058 mutex_lock(&dev_entry->file_mutex);
1059 list_add(&hpriv->debugfs_list, &dev_entry->file_list);
1060 mutex_unlock(&dev_entry->file_mutex);
1061 }
1062
hl_debugfs_remove_file(struct hl_fpriv * hpriv)1063 void hl_debugfs_remove_file(struct hl_fpriv *hpriv)
1064 {
1065 struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs;
1066
1067 mutex_lock(&dev_entry->file_mutex);
1068 list_del(&hpriv->debugfs_list);
1069 mutex_unlock(&dev_entry->file_mutex);
1070 }
1071
hl_debugfs_add_cb(struct hl_cb * cb)1072 void hl_debugfs_add_cb(struct hl_cb *cb)
1073 {
1074 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1075
1076 spin_lock(&dev_entry->cb_spinlock);
1077 list_add(&cb->debugfs_list, &dev_entry->cb_list);
1078 spin_unlock(&dev_entry->cb_spinlock);
1079 }
1080
hl_debugfs_remove_cb(struct hl_cb * cb)1081 void hl_debugfs_remove_cb(struct hl_cb *cb)
1082 {
1083 struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs;
1084
1085 spin_lock(&dev_entry->cb_spinlock);
1086 list_del(&cb->debugfs_list);
1087 spin_unlock(&dev_entry->cb_spinlock);
1088 }
1089
hl_debugfs_add_cs(struct hl_cs * cs)1090 void hl_debugfs_add_cs(struct hl_cs *cs)
1091 {
1092 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1093
1094 spin_lock(&dev_entry->cs_spinlock);
1095 list_add(&cs->debugfs_list, &dev_entry->cs_list);
1096 spin_unlock(&dev_entry->cs_spinlock);
1097 }
1098
hl_debugfs_remove_cs(struct hl_cs * cs)1099 void hl_debugfs_remove_cs(struct hl_cs *cs)
1100 {
1101 struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs;
1102
1103 spin_lock(&dev_entry->cs_spinlock);
1104 list_del(&cs->debugfs_list);
1105 spin_unlock(&dev_entry->cs_spinlock);
1106 }
1107
hl_debugfs_add_job(struct hl_device * hdev,struct hl_cs_job * job)1108 void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job)
1109 {
1110 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1111
1112 spin_lock(&dev_entry->cs_job_spinlock);
1113 list_add(&job->debugfs_list, &dev_entry->cs_job_list);
1114 spin_unlock(&dev_entry->cs_job_spinlock);
1115 }
1116
hl_debugfs_remove_job(struct hl_device * hdev,struct hl_cs_job * job)1117 void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job)
1118 {
1119 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1120
1121 spin_lock(&dev_entry->cs_job_spinlock);
1122 list_del(&job->debugfs_list);
1123 spin_unlock(&dev_entry->cs_job_spinlock);
1124 }
1125
hl_debugfs_add_userptr(struct hl_device * hdev,struct hl_userptr * userptr)1126 void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr)
1127 {
1128 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1129
1130 spin_lock(&dev_entry->userptr_spinlock);
1131 list_add(&userptr->debugfs_list, &dev_entry->userptr_list);
1132 spin_unlock(&dev_entry->userptr_spinlock);
1133 }
1134
hl_debugfs_remove_userptr(struct hl_device * hdev,struct hl_userptr * userptr)1135 void hl_debugfs_remove_userptr(struct hl_device *hdev,
1136 struct hl_userptr *userptr)
1137 {
1138 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1139
1140 spin_lock(&dev_entry->userptr_spinlock);
1141 list_del(&userptr->debugfs_list);
1142 spin_unlock(&dev_entry->userptr_spinlock);
1143 }
1144
hl_debugfs_add_ctx_mem_hash(struct hl_device * hdev,struct hl_ctx * ctx)1145 void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1146 {
1147 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1148
1149 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1150 list_add(&ctx->debugfs_list, &dev_entry->ctx_mem_hash_list);
1151 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1152 }
1153
hl_debugfs_remove_ctx_mem_hash(struct hl_device * hdev,struct hl_ctx * ctx)1154 void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx)
1155 {
1156 struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs;
1157
1158 spin_lock(&dev_entry->ctx_mem_hash_spinlock);
1159 list_del(&ctx->debugfs_list);
1160 spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
1161 }
1162
hl_debugfs_init(void)1163 void __init hl_debugfs_init(void)
1164 {
1165 hl_debug_root = debugfs_create_dir("habanalabs", NULL);
1166 }
1167
hl_debugfs_fini(void)1168 void hl_debugfs_fini(void)
1169 {
1170 debugfs_remove_recursive(hl_debug_root);
1171 }
1172
