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858c9f6c JS |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
3 | * Fibre Channel Host Bus Adapters. * | |
4 | * Copyright (C) 2007 Emulex. All rights reserved. * | |
5 | * EMULEX and SLI are trademarks of Emulex. * | |
6 | * www.emulex.com * | |
7 | * * | |
8 | * This program is free software; you can redistribute it and/or * | |
9 | * modify it under the terms of version 2 of the GNU General * | |
10 | * Public License as published by the Free Software Foundation. * | |
11 | * This program is distributed in the hope that it will be useful. * | |
12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
17 | * more details, a copy of which can be found in the file COPYING * | |
18 | * included with this package. * | |
19 | *******************************************************************/ | |
20 | ||
21 | #include <linux/blkdev.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/dma-mapping.h> | |
24 | #include <linux/idr.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/kthread.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/spinlock.h> | |
29 | #include <linux/ctype.h> | |
30 | #include <linux/version.h> | |
31 | ||
32 | #include <scsi/scsi.h> | |
33 | #include <scsi/scsi_device.h> | |
34 | #include <scsi/scsi_host.h> | |
35 | #include <scsi/scsi_transport_fc.h> | |
36 | ||
37 | #include "lpfc_hw.h" | |
38 | #include "lpfc_sli.h" | |
39 | #include "lpfc_disc.h" | |
40 | #include "lpfc_scsi.h" | |
41 | #include "lpfc.h" | |
42 | #include "lpfc_logmsg.h" | |
43 | #include "lpfc_crtn.h" | |
44 | #include "lpfc_vport.h" | |
45 | #include "lpfc_version.h" | |
858c9f6c JS |
46 | #include "lpfc_debugfs.h" |
47 | ||
48 | #ifdef CONFIG_LPFC_DEBUG_FS | |
49 | /* debugfs interface | |
50 | * | |
51 | * To access this interface the user should: | |
52 | * # mkdir /debug | |
53 | * # mount -t debugfs none /debug | |
54 | * | |
55 | * The lpfc debugfs directory hierachy is: | |
56 | * lpfc/lpfcX/vportY | |
57 | * where X is the lpfc hba unique_id | |
58 | * where Y is the vport VPI on that hba | |
59 | * | |
60 | * Debugging services available per vport: | |
61 | * discovery_trace | |
62 | * This is an ACSII readable file that contains a trace of the last | |
63 | * lpfc_debugfs_max_disc_trc events that happened on a specific vport. | |
64 | * See lpfc_debugfs.h for different categories of | |
65 | * discovery events. To enable the discovery trace, the following | |
66 | * module parameters must be set: | |
67 | * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support | |
68 | * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for | |
69 | * EACH vport. X MUST also be a power of 2. | |
70 | * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in | |
71 | * lpfc_debugfs.h . | |
72 | */ | |
51ef4c26 | 73 | static int lpfc_debugfs_enable = 1; |
858c9f6c JS |
74 | module_param(lpfc_debugfs_enable, int, 0); |
75 | MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services"); | |
76 | ||
a58cbd52 JS |
77 | /* This MUST be a power of 2 */ |
78 | static int lpfc_debugfs_max_disc_trc = 0; | |
858c9f6c JS |
79 | module_param(lpfc_debugfs_max_disc_trc, int, 0); |
80 | MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc, | |
81 | "Set debugfs discovery trace depth"); | |
82 | ||
a58cbd52 JS |
83 | /* This MUST be a power of 2 */ |
84 | static int lpfc_debugfs_max_slow_ring_trc = 0; | |
85 | module_param(lpfc_debugfs_max_slow_ring_trc, int, 0); | |
86 | MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc, | |
87 | "Set debugfs slow ring trace depth"); | |
88 | ||
858c9f6c JS |
89 | static int lpfc_debugfs_mask_disc_trc = 0; |
90 | module_param(lpfc_debugfs_mask_disc_trc, int, 0); | |
91 | MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, | |
92 | "Set debugfs discovery trace mask"); | |
93 | ||
94 | #include <linux/debugfs.h> | |
95 | ||
a58cbd52 JS |
96 | /* size of output line, for discovery_trace and slow_ring_trace */ |
97 | #define LPFC_DEBUG_TRC_ENTRY_SIZE 100 | |
858c9f6c JS |
98 | |
99 | /* nodelist output buffer size */ | |
100 | #define LPFC_NODELIST_SIZE 8192 | |
101 | #define LPFC_NODELIST_ENTRY_SIZE 120 | |
102 | ||
78b2d852 | 103 | /* dumpslim output buffer size */ |
a58cbd52 JS |
104 | #define LPFC_DUMPSLIM_SIZE 4096 |
105 | ||
78b2d852 JS |
106 | /* hbqinfo output buffer size */ |
107 | #define LPFC_HBQINFO_SIZE 8192 | |
108 | ||
858c9f6c JS |
109 | struct lpfc_debug { |
110 | char *buffer; | |
111 | int len; | |
112 | }; | |
113 | ||
311464ec JS |
114 | static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); |
115 | static unsigned long lpfc_debugfs_start_time = 0L; | |
858c9f6c JS |
116 | |
117 | static int | |
118 | lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) | |
119 | { | |
120 | int i, index, len, enable; | |
121 | uint32_t ms; | |
a58cbd52 JS |
122 | struct lpfc_debugfs_trc *dtp; |
123 | char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; | |
858c9f6c JS |
124 | |
125 | ||
126 | enable = lpfc_debugfs_enable; | |
127 | lpfc_debugfs_enable = 0; | |
128 | ||
129 | len = 0; | |
130 | index = (atomic_read(&vport->disc_trc_cnt) + 1) & | |
131 | (lpfc_debugfs_max_disc_trc - 1); | |
132 | for (i = index; i < lpfc_debugfs_max_disc_trc; i++) { | |
133 | dtp = vport->disc_trc + i; | |
134 | if (!dtp->fmt) | |
135 | continue; | |
136 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
a58cbd52 JS |
137 | snprintf(buffer, |
138 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
858c9f6c JS |
139 | dtp->seq_cnt, ms, dtp->fmt); |
140 | len += snprintf(buf+len, size-len, buffer, | |
141 | dtp->data1, dtp->data2, dtp->data3); | |
142 | } | |
143 | for (i = 0; i < index; i++) { | |
144 | dtp = vport->disc_trc + i; | |
145 | if (!dtp->fmt) | |
146 | continue; | |
147 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
a58cbd52 JS |
148 | snprintf(buffer, |
149 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
150 | dtp->seq_cnt, ms, dtp->fmt); | |
151 | len += snprintf(buf+len, size-len, buffer, | |
152 | dtp->data1, dtp->data2, dtp->data3); | |
153 | } | |
154 | ||
155 | lpfc_debugfs_enable = enable; | |
156 | return len; | |
157 | } | |
158 | ||
159 | static int | |
160 | lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) | |
161 | { | |
162 | int i, index, len, enable; | |
163 | uint32_t ms; | |
164 | struct lpfc_debugfs_trc *dtp; | |
165 | char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; | |
166 | ||
167 | ||
168 | enable = lpfc_debugfs_enable; | |
169 | lpfc_debugfs_enable = 0; | |
170 | ||
171 | len = 0; | |
172 | index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & | |
173 | (lpfc_debugfs_max_slow_ring_trc - 1); | |
174 | for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { | |
175 | dtp = phba->slow_ring_trc + i; | |
176 | if (!dtp->fmt) | |
177 | continue; | |
178 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
179 | snprintf(buffer, | |
180 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
181 | dtp->seq_cnt, ms, dtp->fmt); | |
182 | len += snprintf(buf+len, size-len, buffer, | |
183 | dtp->data1, dtp->data2, dtp->data3); | |
184 | } | |
185 | for (i = 0; i < index; i++) { | |
186 | dtp = phba->slow_ring_trc + i; | |
187 | if (!dtp->fmt) | |
188 | continue; | |
189 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
190 | snprintf(buffer, | |
191 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
858c9f6c JS |
192 | dtp->seq_cnt, ms, dtp->fmt); |
193 | len += snprintf(buf+len, size-len, buffer, | |
194 | dtp->data1, dtp->data2, dtp->data3); | |
195 | } | |
196 | ||
197 | lpfc_debugfs_enable = enable; | |
198 | return len; | |
199 | } | |
200 | ||
311464ec | 201 | static int lpfc_debugfs_last_hbq = -1; |
78b2d852 JS |
202 | |
203 | static int | |
204 | lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size) | |
205 | { | |
206 | int len = 0; | |
207 | int cnt, i, j, found, posted, low; | |
208 | uint32_t phys, raw_index, getidx; | |
209 | struct lpfc_hbq_init *hip; | |
210 | struct hbq_s *hbqs; | |
211 | struct lpfc_hbq_entry *hbqe; | |
212 | struct lpfc_dmabuf *d_buf; | |
213 | struct hbq_dmabuf *hbq_buf; | |
214 | ||
215 | cnt = LPFC_HBQINFO_SIZE; | |
216 | spin_lock_irq(&phba->hbalock); | |
217 | ||
218 | /* toggle between multiple hbqs, if any */ | |
219 | i = lpfc_sli_hbq_count(); | |
220 | if (i > 1) { | |
221 | lpfc_debugfs_last_hbq++; | |
222 | if (lpfc_debugfs_last_hbq >= i) | |
223 | lpfc_debugfs_last_hbq = 0; | |
224 | } | |
225 | else | |
226 | lpfc_debugfs_last_hbq = 0; | |
227 | ||
228 | i = lpfc_debugfs_last_hbq; | |
229 | ||
230 | len += snprintf(buf+len, size-len, "HBQ %d Info\n", i); | |
231 | ||
51ef4c26 | 232 | hbqs = &phba->hbqs[i]; |
78b2d852 | 233 | posted = 0; |
51ef4c26 | 234 | list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) |
78b2d852 JS |
235 | posted++; |
236 | ||
237 | hip = lpfc_hbq_defs[i]; | |
238 | len += snprintf(buf+len, size-len, | |
239 | "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n", | |
240 | hip->hbq_index, hip->profile, hip->rn, | |
241 | hip->buffer_count, hip->init_count, hip->add_count, posted); | |
242 | ||
78b2d852 JS |
243 | raw_index = phba->hbq_get[i]; |
244 | getidx = le32_to_cpu(raw_index); | |
245 | len += snprintf(buf+len, size-len, | |
246 | "entrys:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n", | |
247 | hbqs->entry_count, hbqs->hbqPutIdx, hbqs->next_hbqPutIdx, | |
248 | hbqs->local_hbqGetIdx, getidx); | |
249 | ||
51ef4c26 | 250 | hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt; |
78b2d852 JS |
251 | for (j=0; j<hbqs->entry_count; j++) { |
252 | len += snprintf(buf+len, size-len, | |
253 | "%03d: %08x %04x %05x ", j, | |
254 | hbqe->bde.addrLow, hbqe->bde.tus.w, hbqe->buffer_tag); | |
255 | ||
256 | i = 0; | |
257 | found = 0; | |
258 | ||
259 | /* First calculate if slot has an associated posted buffer */ | |
260 | low = hbqs->hbqPutIdx - posted; | |
261 | if (low >= 0) { | |
262 | if ((j >= hbqs->hbqPutIdx) || (j < low)) { | |
263 | len += snprintf(buf+len, size-len, "Unused\n"); | |
264 | goto skipit; | |
265 | } | |
266 | } | |
267 | else { | |
268 | if ((j >= hbqs->hbqPutIdx) && | |
269 | (j < (hbqs->entry_count+low))) { | |
270 | len += snprintf(buf+len, size-len, "Unused\n"); | |
271 | goto skipit; | |
272 | } | |
273 | } | |
274 | ||
275 | /* Get the Buffer info for the posted buffer */ | |
51ef4c26 | 276 | list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) { |
78b2d852 JS |
277 | hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); |
278 | phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff); | |
279 | if (phys == hbqe->bde.addrLow) { | |
280 | len += snprintf(buf+len, size-len, | |
281 | "Buf%d: %p %06x\n", i, | |
282 | hbq_buf->dbuf.virt, hbq_buf->tag); | |
283 | found = 1; | |
284 | break; | |
285 | } | |
286 | i++; | |
287 | } | |
288 | if (!found) { | |
289 | len += snprintf(buf+len, size-len, "No DMAinfo?\n"); | |
290 | } | |
291 | skipit: | |
292 | hbqe++; | |
293 | if (len > LPFC_HBQINFO_SIZE - 54) | |
294 | break; | |
295 | } | |
296 | spin_unlock_irq(&phba->hbalock); | |
297 | return len; | |
298 | } | |
299 | ||
a58cbd52 JS |
300 | static int |
301 | lpfc_debugfs_dumpslim_data(struct lpfc_hba *phba, char *buf, int size) | |
302 | { | |
303 | int len = 0; | |
304 | int cnt, i, off; | |
305 | uint32_t word0, word1, word2, word3; | |
306 | uint32_t *ptr; | |
307 | struct lpfc_pgp *pgpp; | |
308 | struct lpfc_sli *psli = &phba->sli; | |
309 | struct lpfc_sli_ring *pring; | |
310 | ||
311 | cnt = LPFC_DUMPSLIM_SIZE; | |
312 | off = 0; | |
313 | spin_lock_irq(&phba->hbalock); | |
314 | ||
315 | len += snprintf(buf+len, size-len, "SLIM Mailbox\n"); | |
316 | ptr = (uint32_t *)phba->slim2p; | |
317 | i = sizeof(MAILBOX_t); | |
318 | while (i > 0) { | |
319 | len += snprintf(buf+len, size-len, | |
320 | "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", | |
321 | off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), | |
322 | *(ptr+5), *(ptr+6), *(ptr+7)); | |
323 | ptr += 8; | |
324 | i -= (8 * sizeof(uint32_t)); | |
325 | off += (8 * sizeof(uint32_t)); | |
326 | } | |
327 | ||
328 | len += snprintf(buf+len, size-len, "SLIM PCB\n"); | |
329 | ptr = (uint32_t *)&phba->slim2p->pcb; | |
330 | i = sizeof(PCB_t); | |
331 | while (i > 0) { | |
332 | len += snprintf(buf+len, size-len, | |
333 | "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", | |
334 | off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), | |
335 | *(ptr+5), *(ptr+6), *(ptr+7)); | |
336 | ptr += 8; | |
337 | i -= (8 * sizeof(uint32_t)); | |
338 | off += (8 * sizeof(uint32_t)); | |
339 | } | |
340 | ||
341 | pgpp = (struct lpfc_pgp *)&phba->slim2p->mbx.us.s3_pgp.port; | |
342 | pring = &psli->ring[0]; | |
343 | len += snprintf(buf+len, size-len, | |
344 | "Ring 0: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
345 | "RSP PutInx:%d Max:%d\n", | |
346 | pgpp->cmdGetInx, pring->numCiocb, | |
347 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
348 | pgpp->rspPutInx, pring->numRiocb); | |
349 | pgpp++; | |
350 | ||
351 | pring = &psli->ring[1]; | |
352 | len += snprintf(buf+len, size-len, | |
353 | "Ring 1: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
354 | "RSP PutInx:%d Max:%d\n", | |
355 | pgpp->cmdGetInx, pring->numCiocb, | |
356 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
357 | pgpp->rspPutInx, pring->numRiocb); | |
358 | pgpp++; | |
359 | ||
360 | pring = &psli->ring[2]; | |
361 | len += snprintf(buf+len, size-len, | |
362 | "Ring 2: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
363 | "RSP PutInx:%d Max:%d\n", | |
364 | pgpp->cmdGetInx, pring->numCiocb, | |
365 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
366 | pgpp->rspPutInx, pring->numRiocb); | |
367 | pgpp++; | |
368 | ||
369 | pring = &psli->ring[3]; | |
370 | len += snprintf(buf+len, size-len, | |
371 | "Ring 3: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
372 | "RSP PutInx:%d Max:%d\n", | |
373 | pgpp->cmdGetInx, pring->numCiocb, | |
374 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
375 | pgpp->rspPutInx, pring->numRiocb); | |
376 | ||
377 | ||
378 | ptr = (uint32_t *)&phba->slim2p->mbx.us.s3_pgp.hbq_get; | |
379 | word0 = readl(phba->HAregaddr); | |
380 | word1 = readl(phba->CAregaddr); | |
381 | word2 = readl(phba->HSregaddr); | |
382 | word3 = readl(phba->HCregaddr); | |
383 | len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x HC:%08x\n", | |
384 | word0, word1, word2, word3); | |
385 | spin_unlock_irq(&phba->hbalock); | |
386 | return len; | |
387 | } | |
388 | ||
858c9f6c JS |
389 | static int |
390 | lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size) | |
391 | { | |
392 | int len = 0; | |
393 | int cnt; | |
394 | struct Scsi_Host *shost = lpfc_shost_from_vport(vport); | |
395 | struct lpfc_nodelist *ndlp; | |
396 | unsigned char *statep, *name; | |
397 | ||
398 | cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE); | |
399 | ||
400 | spin_lock_irq(shost->host_lock); | |
401 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
402 | if (!cnt) { | |
403 | len += snprintf(buf+len, size-len, | |
404 | "Missing Nodelist Entries\n"); | |
405 | break; | |
406 | } | |
407 | cnt--; | |
408 | switch (ndlp->nlp_state) { | |
409 | case NLP_STE_UNUSED_NODE: | |
410 | statep = "UNUSED"; | |
411 | break; | |
412 | case NLP_STE_PLOGI_ISSUE: | |
413 | statep = "PLOGI "; | |
414 | break; | |
415 | case NLP_STE_ADISC_ISSUE: | |
416 | statep = "ADISC "; | |
417 | break; | |
418 | case NLP_STE_REG_LOGIN_ISSUE: | |
419 | statep = "REGLOG"; | |
420 | break; | |
421 | case NLP_STE_PRLI_ISSUE: | |
422 | statep = "PRLI "; | |
423 | break; | |
424 | case NLP_STE_UNMAPPED_NODE: | |
425 | statep = "UNMAP "; | |
426 | break; | |
427 | case NLP_STE_MAPPED_NODE: | |
428 | statep = "MAPPED"; | |
429 | break; | |
430 | case NLP_STE_NPR_NODE: | |
431 | statep = "NPR "; | |
432 | break; | |
433 | default: | |
434 | statep = "UNKNOWN"; | |
435 | } | |
436 | len += snprintf(buf+len, size-len, "%s DID:x%06x ", | |
437 | statep, ndlp->nlp_DID); | |
438 | name = (unsigned char *)&ndlp->nlp_portname; | |
439 | len += snprintf(buf+len, size-len, | |
440 | "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", | |
441 | *name, *(name+1), *(name+2), *(name+3), | |
442 | *(name+4), *(name+5), *(name+6), *(name+7)); | |
443 | name = (unsigned char *)&ndlp->nlp_nodename; | |
444 | len += snprintf(buf+len, size-len, | |
445 | "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", | |
446 | *name, *(name+1), *(name+2), *(name+3), | |
447 | *(name+4), *(name+5), *(name+6), *(name+7)); | |
448 | len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ", | |
449 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
450 | if (!ndlp->nlp_type) | |
a58cbd52 | 451 | len += snprintf(buf+len, size-len, "UNKNOWN_TYPE "); |
858c9f6c JS |
452 | if (ndlp->nlp_type & NLP_FC_NODE) |
453 | len += snprintf(buf+len, size-len, "FC_NODE "); | |
454 | if (ndlp->nlp_type & NLP_FABRIC) | |
455 | len += snprintf(buf+len, size-len, "FABRIC "); | |
456 | if (ndlp->nlp_type & NLP_FCP_TARGET) | |
457 | len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ", | |
458 | ndlp->nlp_sid); | |
459 | if (ndlp->nlp_type & NLP_FCP_INITIATOR) | |
a58cbd52 JS |
460 | len += snprintf(buf+len, size-len, "FCP_INITIATOR "); |
461 | len += snprintf(buf+len, size-len, "refcnt:%x", | |
462 | atomic_read(&ndlp->kref.refcount)); | |
858c9f6c JS |
463 | len += snprintf(buf+len, size-len, "\n"); |
464 | } | |
465 | spin_unlock_irq(shost->host_lock); | |
466 | return len; | |
467 | } | |
468 | #endif | |
469 | ||
470 | ||
471 | inline void | |
472 | lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, | |
473 | uint32_t data1, uint32_t data2, uint32_t data3) | |
474 | { | |
475 | #ifdef CONFIG_LPFC_DEBUG_FS | |
a58cbd52 | 476 | struct lpfc_debugfs_trc *dtp; |
858c9f6c JS |
477 | int index; |
478 | ||
479 | if (!(lpfc_debugfs_mask_disc_trc & mask)) | |
480 | return; | |
481 | ||
482 | if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc || | |
483 | !vport || !vport->disc_trc) | |
484 | return; | |
485 | ||
486 | index = atomic_inc_return(&vport->disc_trc_cnt) & | |
487 | (lpfc_debugfs_max_disc_trc - 1); | |
488 | dtp = vport->disc_trc + index; | |
489 | dtp->fmt = fmt; | |
490 | dtp->data1 = data1; | |
491 | dtp->data2 = data2; | |
492 | dtp->data3 = data3; | |
a58cbd52 JS |
493 | dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); |
494 | dtp->jif = jiffies; | |
495 | #endif | |
496 | return; | |
497 | } | |
498 | ||
499 | inline void | |
500 | lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, | |
501 | uint32_t data1, uint32_t data2, uint32_t data3) | |
502 | { | |
503 | #ifdef CONFIG_LPFC_DEBUG_FS | |
504 | struct lpfc_debugfs_trc *dtp; | |
505 | int index; | |
506 | ||
507 | if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc || | |
508 | !phba || !phba->slow_ring_trc) | |
509 | return; | |
510 | ||
511 | index = atomic_inc_return(&phba->slow_ring_trc_cnt) & | |
512 | (lpfc_debugfs_max_slow_ring_trc - 1); | |
513 | dtp = phba->slow_ring_trc + index; | |
514 | dtp->fmt = fmt; | |
515 | dtp->data1 = data1; | |
516 | dtp->data2 = data2; | |
517 | dtp->data3 = data3; | |
518 | dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); | |
858c9f6c JS |
519 | dtp->jif = jiffies; |
520 | #endif | |
521 | return; | |
522 | } | |
523 | ||
524 | #ifdef CONFIG_LPFC_DEBUG_FS | |
525 | static int | |
526 | lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file) | |
527 | { | |
528 | struct lpfc_vport *vport = inode->i_private; | |
529 | struct lpfc_debug *debug; | |
530 | int size; | |
531 | int rc = -ENOMEM; | |
532 | ||
533 | if (!lpfc_debugfs_max_disc_trc) { | |
534 | rc = -ENOSPC; | |
535 | goto out; | |
536 | } | |
537 | ||
538 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
539 | if (!debug) | |
540 | goto out; | |
541 | ||
542 | /* Round to page boundry */ | |
a58cbd52 | 543 | size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); |
858c9f6c JS |
544 | size = PAGE_ALIGN(size); |
545 | ||
546 | debug->buffer = kmalloc(size, GFP_KERNEL); | |
547 | if (!debug->buffer) { | |
548 | kfree(debug); | |
549 | goto out; | |
550 | } | |
551 | ||
552 | debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size); | |
553 | file->private_data = debug; | |
554 | ||
555 | rc = 0; | |
556 | out: | |
557 | return rc; | |
558 | } | |
559 | ||
a58cbd52 JS |
560 | static int |
561 | lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file) | |
562 | { | |
563 | struct lpfc_hba *phba = inode->i_private; | |
564 | struct lpfc_debug *debug; | |
565 | int size; | |
566 | int rc = -ENOMEM; | |
567 | ||
568 | if (!lpfc_debugfs_max_slow_ring_trc) { | |
569 | rc = -ENOSPC; | |
570 | goto out; | |
571 | } | |
572 | ||
573 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
574 | if (!debug) | |
575 | goto out; | |
576 | ||
577 | /* Round to page boundry */ | |
578 | size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); | |
579 | size = PAGE_ALIGN(size); | |
580 | ||
581 | debug->buffer = kmalloc(size, GFP_KERNEL); | |
582 | if (!debug->buffer) { | |
583 | kfree(debug); | |
584 | goto out; | |
585 | } | |
586 | ||
587 | debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size); | |
588 | file->private_data = debug; | |
589 | ||
590 | rc = 0; | |
591 | out: | |
592 | return rc; | |
593 | } | |
594 | ||
78b2d852 JS |
595 | static int |
596 | lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) | |
597 | { | |
598 | struct lpfc_hba *phba = inode->i_private; | |
599 | struct lpfc_debug *debug; | |
600 | int rc = -ENOMEM; | |
601 | ||
602 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
603 | if (!debug) | |
604 | goto out; | |
605 | ||
606 | /* Round to page boundry */ | |
607 | debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL); | |
608 | if (!debug->buffer) { | |
609 | kfree(debug); | |
610 | goto out; | |
611 | } | |
612 | ||
613 | debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer, | |
614 | LPFC_HBQINFO_SIZE); | |
615 | file->private_data = debug; | |
616 | ||
617 | rc = 0; | |
618 | out: | |
619 | return rc; | |
620 | } | |
621 | ||
a58cbd52 JS |
622 | static int |
623 | lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file) | |
624 | { | |
625 | struct lpfc_hba *phba = inode->i_private; | |
626 | struct lpfc_debug *debug; | |
627 | int rc = -ENOMEM; | |
628 | ||
629 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
630 | if (!debug) | |
631 | goto out; | |
632 | ||
633 | /* Round to page boundry */ | |
634 | debug->buffer = kmalloc(LPFC_DUMPSLIM_SIZE, GFP_KERNEL); | |
635 | if (!debug->buffer) { | |
636 | kfree(debug); | |
637 | goto out; | |
638 | } | |
639 | ||
640 | debug->len = lpfc_debugfs_dumpslim_data(phba, debug->buffer, | |
641 | LPFC_DUMPSLIM_SIZE); | |
642 | file->private_data = debug; | |
643 | ||
644 | rc = 0; | |
645 | out: | |
646 | return rc; | |
647 | } | |
648 | ||
858c9f6c JS |
649 | static int |
650 | lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file) | |
651 | { | |
652 | struct lpfc_vport *vport = inode->i_private; | |
653 | struct lpfc_debug *debug; | |
654 | int rc = -ENOMEM; | |
655 | ||
656 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
657 | if (!debug) | |
658 | goto out; | |
659 | ||
660 | /* Round to page boundry */ | |
661 | debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL); | |
662 | if (!debug->buffer) { | |
663 | kfree(debug); | |
664 | goto out; | |
665 | } | |
666 | ||
667 | debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer, | |
668 | LPFC_NODELIST_SIZE); | |
669 | file->private_data = debug; | |
670 | ||
671 | rc = 0; | |
672 | out: | |
673 | return rc; | |
674 | } | |
675 | ||
676 | static loff_t | |
677 | lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) | |
678 | { | |
679 | struct lpfc_debug *debug; | |
680 | loff_t pos = -1; | |
681 | ||
682 | debug = file->private_data; | |
683 | ||
684 | switch (whence) { | |
685 | case 0: | |
686 | pos = off; | |
687 | break; | |
688 | case 1: | |
689 | pos = file->f_pos + off; | |
690 | break; | |
691 | case 2: | |
692 | pos = debug->len - off; | |
693 | } | |
694 | return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); | |
695 | } | |
696 | ||
697 | static ssize_t | |
698 | lpfc_debugfs_read(struct file *file, char __user *buf, | |
699 | size_t nbytes, loff_t *ppos) | |
700 | { | |
701 | struct lpfc_debug *debug = file->private_data; | |
702 | return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer, | |
703 | debug->len); | |
704 | } | |
705 | ||
706 | static int | |
707 | lpfc_debugfs_release(struct inode *inode, struct file *file) | |
708 | { | |
709 | struct lpfc_debug *debug = file->private_data; | |
710 | ||
711 | kfree(debug->buffer); | |
712 | kfree(debug); | |
713 | ||
714 | return 0; | |
715 | } | |
716 | ||
717 | #undef lpfc_debugfs_op_disc_trc | |
718 | static struct file_operations lpfc_debugfs_op_disc_trc = { | |
719 | .owner = THIS_MODULE, | |
720 | .open = lpfc_debugfs_disc_trc_open, | |
721 | .llseek = lpfc_debugfs_lseek, | |
722 | .read = lpfc_debugfs_read, | |
723 | .release = lpfc_debugfs_release, | |
724 | }; | |
725 | ||
726 | #undef lpfc_debugfs_op_nodelist | |
727 | static struct file_operations lpfc_debugfs_op_nodelist = { | |
728 | .owner = THIS_MODULE, | |
729 | .open = lpfc_debugfs_nodelist_open, | |
730 | .llseek = lpfc_debugfs_lseek, | |
731 | .read = lpfc_debugfs_read, | |
732 | .release = lpfc_debugfs_release, | |
733 | }; | |
734 | ||
78b2d852 JS |
735 | #undef lpfc_debugfs_op_hbqinfo |
736 | static struct file_operations lpfc_debugfs_op_hbqinfo = { | |
737 | .owner = THIS_MODULE, | |
738 | .open = lpfc_debugfs_hbqinfo_open, | |
739 | .llseek = lpfc_debugfs_lseek, | |
740 | .read = lpfc_debugfs_read, | |
741 | .release = lpfc_debugfs_release, | |
742 | }; | |
743 | ||
a58cbd52 JS |
744 | #undef lpfc_debugfs_op_dumpslim |
745 | static struct file_operations lpfc_debugfs_op_dumpslim = { | |
746 | .owner = THIS_MODULE, | |
747 | .open = lpfc_debugfs_dumpslim_open, | |
748 | .llseek = lpfc_debugfs_lseek, | |
749 | .read = lpfc_debugfs_read, | |
750 | .release = lpfc_debugfs_release, | |
751 | }; | |
752 | ||
753 | #undef lpfc_debugfs_op_slow_ring_trc | |
754 | static struct file_operations lpfc_debugfs_op_slow_ring_trc = { | |
755 | .owner = THIS_MODULE, | |
756 | .open = lpfc_debugfs_slow_ring_trc_open, | |
757 | .llseek = lpfc_debugfs_lseek, | |
758 | .read = lpfc_debugfs_read, | |
759 | .release = lpfc_debugfs_release, | |
760 | }; | |
761 | ||
858c9f6c JS |
762 | static struct dentry *lpfc_debugfs_root = NULL; |
763 | static atomic_t lpfc_debugfs_hba_count; | |
764 | #endif | |
765 | ||
766 | inline void | |
767 | lpfc_debugfs_initialize(struct lpfc_vport *vport) | |
768 | { | |
769 | #ifdef CONFIG_LPFC_DEBUG_FS | |
770 | struct lpfc_hba *phba = vport->phba; | |
771 | char name[64]; | |
772 | uint32_t num, i; | |
773 | ||
774 | if (!lpfc_debugfs_enable) | |
775 | return; | |
776 | ||
a58cbd52 | 777 | /* Setup lpfc root directory */ |
858c9f6c JS |
778 | if (!lpfc_debugfs_root) { |
779 | lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); | |
780 | atomic_set(&lpfc_debugfs_hba_count, 0); | |
a58cbd52 | 781 | if (!lpfc_debugfs_root) { |
e8b62011 JS |
782 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
783 | "0409 Cannot create debugfs root\n"); | |
858c9f6c | 784 | goto debug_failed; |
a58cbd52 | 785 | } |
858c9f6c | 786 | } |
a58cbd52 JS |
787 | if (!lpfc_debugfs_start_time) |
788 | lpfc_debugfs_start_time = jiffies; | |
789 | ||
790 | /* Setup lpfcX directory for specific HBA */ | |
858c9f6c JS |
791 | snprintf(name, sizeof(name), "lpfc%d", phba->brd_no); |
792 | if (!phba->hba_debugfs_root) { | |
793 | phba->hba_debugfs_root = | |
794 | debugfs_create_dir(name, lpfc_debugfs_root); | |
a58cbd52 | 795 | if (!phba->hba_debugfs_root) { |
e8b62011 JS |
796 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
797 | "0409 Cannot create debugfs hba\n"); | |
858c9f6c | 798 | goto debug_failed; |
a58cbd52 | 799 | } |
858c9f6c JS |
800 | atomic_inc(&lpfc_debugfs_hba_count); |
801 | atomic_set(&phba->debugfs_vport_count, 0); | |
a58cbd52 | 802 | |
78b2d852 JS |
803 | /* Setup hbqinfo */ |
804 | snprintf(name, sizeof(name), "hbqinfo"); | |
805 | phba->debug_hbqinfo = | |
806 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
807 | phba->hba_debugfs_root, | |
808 | phba, &lpfc_debugfs_op_hbqinfo); | |
809 | if (!phba->debug_hbqinfo) { | |
810 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, | |
811 | "0409 Cannot create debugfs hbqinfo\n"); | |
812 | goto debug_failed; | |
813 | } | |
814 | ||
a58cbd52 JS |
815 | /* Setup dumpslim */ |
816 | snprintf(name, sizeof(name), "dumpslim"); | |
817 | phba->debug_dumpslim = | |
818 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
819 | phba->hba_debugfs_root, | |
820 | phba, &lpfc_debugfs_op_dumpslim); | |
821 | if (!phba->debug_dumpslim) { | |
e8b62011 JS |
822 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
823 | "0409 Cannot create debugfs dumpslim\n"); | |
a58cbd52 JS |
824 | goto debug_failed; |
825 | } | |
826 | ||
827 | /* Setup slow ring trace */ | |
828 | if (lpfc_debugfs_max_slow_ring_trc) { | |
829 | num = lpfc_debugfs_max_slow_ring_trc - 1; | |
830 | if (num & lpfc_debugfs_max_slow_ring_trc) { | |
831 | /* Change to be a power of 2 */ | |
832 | num = lpfc_debugfs_max_slow_ring_trc; | |
833 | i = 0; | |
834 | while (num > 1) { | |
835 | num = num >> 1; | |
836 | i++; | |
837 | } | |
838 | lpfc_debugfs_max_slow_ring_trc = (1 << i); | |
839 | printk(KERN_ERR | |
e8b62011 JS |
840 | "lpfc_debugfs_max_disc_trc changed to " |
841 | "%d\n", lpfc_debugfs_max_disc_trc); | |
a58cbd52 JS |
842 | } |
843 | } | |
844 | ||
845 | ||
846 | snprintf(name, sizeof(name), "slow_ring_trace"); | |
847 | phba->debug_slow_ring_trc = | |
848 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
849 | phba->hba_debugfs_root, | |
850 | phba, &lpfc_debugfs_op_slow_ring_trc); | |
851 | if (!phba->debug_slow_ring_trc) { | |
e8b62011 JS |
852 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
853 | "0409 Cannot create debugfs " | |
854 | "slow_ring_trace\n"); | |
a58cbd52 JS |
855 | goto debug_failed; |
856 | } | |
857 | if (!phba->slow_ring_trc) { | |
858 | phba->slow_ring_trc = kmalloc( | |
859 | (sizeof(struct lpfc_debugfs_trc) * | |
860 | lpfc_debugfs_max_slow_ring_trc), | |
861 | GFP_KERNEL); | |
862 | if (!phba->slow_ring_trc) { | |
e8b62011 JS |
863 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
864 | "0409 Cannot create debugfs " | |
865 | "slow_ring buffer\n"); | |
a58cbd52 JS |
866 | goto debug_failed; |
867 | } | |
868 | atomic_set(&phba->slow_ring_trc_cnt, 0); | |
869 | memset(phba->slow_ring_trc, 0, | |
870 | (sizeof(struct lpfc_debugfs_trc) * | |
871 | lpfc_debugfs_max_slow_ring_trc)); | |
872 | } | |
858c9f6c JS |
873 | } |
874 | ||
875 | snprintf(name, sizeof(name), "vport%d", vport->vpi); | |
876 | if (!vport->vport_debugfs_root) { | |
877 | vport->vport_debugfs_root = | |
878 | debugfs_create_dir(name, phba->hba_debugfs_root); | |
a58cbd52 | 879 | if (!vport->vport_debugfs_root) { |
e8b62011 JS |
880 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
881 | "0409 Cant create debugfs"); | |
858c9f6c | 882 | goto debug_failed; |
a58cbd52 | 883 | } |
858c9f6c JS |
884 | atomic_inc(&phba->debugfs_vport_count); |
885 | } | |
886 | ||
a58cbd52 JS |
887 | if (lpfc_debugfs_max_disc_trc) { |
888 | num = lpfc_debugfs_max_disc_trc - 1; | |
889 | if (num & lpfc_debugfs_max_disc_trc) { | |
890 | /* Change to be a power of 2 */ | |
891 | num = lpfc_debugfs_max_disc_trc; | |
892 | i = 0; | |
893 | while (num > 1) { | |
894 | num = num >> 1; | |
895 | i++; | |
896 | } | |
897 | lpfc_debugfs_max_disc_trc = (1 << i); | |
898 | printk(KERN_ERR | |
e8b62011 JS |
899 | "lpfc_debugfs_max_disc_trc changed to %d\n", |
900 | lpfc_debugfs_max_disc_trc); | |
a58cbd52 JS |
901 | } |
902 | } | |
858c9f6c | 903 | |
bbfbbbc1 | 904 | vport->disc_trc = kmzlloc( |
a58cbd52 | 905 | (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), |
858c9f6c JS |
906 | GFP_KERNEL); |
907 | ||
a58cbd52 | 908 | if (!vport->disc_trc) { |
e8b62011 JS |
909 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
910 | "0409 Cannot create debugfs disc trace " | |
911 | "buffer\n"); | |
858c9f6c | 912 | goto debug_failed; |
a58cbd52 JS |
913 | } |
914 | atomic_set(&vport->disc_trc_cnt, 0); | |
858c9f6c JS |
915 | |
916 | snprintf(name, sizeof(name), "discovery_trace"); | |
917 | vport->debug_disc_trc = | |
918 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
919 | vport->vport_debugfs_root, | |
920 | vport, &lpfc_debugfs_op_disc_trc); | |
921 | if (!vport->debug_disc_trc) { | |
e8b62011 JS |
922 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
923 | "0409 Cannot create debugfs " | |
924 | "discovery_trace\n"); | |
858c9f6c JS |
925 | goto debug_failed; |
926 | } | |
927 | snprintf(name, sizeof(name), "nodelist"); | |
928 | vport->debug_nodelist = | |
929 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
930 | vport->vport_debugfs_root, | |
931 | vport, &lpfc_debugfs_op_nodelist); | |
932 | if (!vport->debug_nodelist) { | |
e8b62011 JS |
933 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
934 | "0409 Cant create debugfs nodelist"); | |
858c9f6c JS |
935 | goto debug_failed; |
936 | } | |
937 | debug_failed: | |
938 | return; | |
939 | #endif | |
940 | } | |
941 | ||
942 | ||
943 | inline void | |
944 | lpfc_debugfs_terminate(struct lpfc_vport *vport) | |
945 | { | |
946 | #ifdef CONFIG_LPFC_DEBUG_FS | |
947 | struct lpfc_hba *phba = vport->phba; | |
948 | ||
949 | if (vport->disc_trc) { | |
950 | kfree(vport->disc_trc); | |
951 | vport->disc_trc = NULL; | |
952 | } | |
953 | if (vport->debug_disc_trc) { | |
954 | debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ | |
955 | vport->debug_disc_trc = NULL; | |
956 | } | |
957 | if (vport->debug_nodelist) { | |
958 | debugfs_remove(vport->debug_nodelist); /* nodelist */ | |
959 | vport->debug_nodelist = NULL; | |
960 | } | |
a58cbd52 | 961 | |
858c9f6c JS |
962 | if (vport->vport_debugfs_root) { |
963 | debugfs_remove(vport->vport_debugfs_root); /* vportX */ | |
964 | vport->vport_debugfs_root = NULL; | |
965 | atomic_dec(&phba->debugfs_vport_count); | |
966 | } | |
967 | if (atomic_read(&phba->debugfs_vport_count) == 0) { | |
a58cbd52 | 968 | |
78b2d852 JS |
969 | if (phba->debug_hbqinfo) { |
970 | debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ | |
971 | phba->debug_hbqinfo = NULL; | |
972 | } | |
a58cbd52 JS |
973 | if (phba->debug_dumpslim) { |
974 | debugfs_remove(phba->debug_dumpslim); /* dumpslim */ | |
975 | phba->debug_dumpslim = NULL; | |
976 | } | |
977 | if (phba->slow_ring_trc) { | |
978 | kfree(phba->slow_ring_trc); | |
979 | phba->slow_ring_trc = NULL; | |
980 | } | |
981 | if (phba->debug_slow_ring_trc) { | |
982 | /* slow_ring_trace */ | |
983 | debugfs_remove(phba->debug_slow_ring_trc); | |
984 | phba->debug_slow_ring_trc = NULL; | |
985 | } | |
986 | ||
987 | if (phba->hba_debugfs_root) { | |
988 | debugfs_remove(phba->hba_debugfs_root); /* lpfcX */ | |
989 | phba->hba_debugfs_root = NULL; | |
990 | atomic_dec(&lpfc_debugfs_hba_count); | |
991 | } | |
992 | ||
858c9f6c JS |
993 | if (atomic_read(&lpfc_debugfs_hba_count) == 0) { |
994 | debugfs_remove(lpfc_debugfs_root); /* lpfc */ | |
995 | lpfc_debugfs_root = NULL; | |
996 | } | |
997 | } | |
998 | #endif | |
a58cbd52 | 999 | return; |
858c9f6c JS |
1000 | } |
1001 | ||
1002 |