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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" | |
46 | #include "lpfc_vport.h" | |
47 | #include "lpfc_debugfs.h" | |
48 | ||
49 | #ifdef CONFIG_LPFC_DEBUG_FS | |
50 | /* debugfs interface | |
51 | * | |
52 | * To access this interface the user should: | |
53 | * # mkdir /debug | |
54 | * # mount -t debugfs none /debug | |
55 | * | |
56 | * The lpfc debugfs directory hierachy is: | |
57 | * lpfc/lpfcX/vportY | |
58 | * where X is the lpfc hba unique_id | |
59 | * where Y is the vport VPI on that hba | |
60 | * | |
61 | * Debugging services available per vport: | |
62 | * discovery_trace | |
63 | * This is an ACSII readable file that contains a trace of the last | |
64 | * lpfc_debugfs_max_disc_trc events that happened on a specific vport. | |
65 | * See lpfc_debugfs.h for different categories of | |
66 | * discovery events. To enable the discovery trace, the following | |
67 | * module parameters must be set: | |
68 | * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support | |
69 | * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for | |
70 | * EACH vport. X MUST also be a power of 2. | |
71 | * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in | |
72 | * lpfc_debugfs.h . | |
73 | */ | |
51ef4c26 | 74 | static int lpfc_debugfs_enable = 1; |
858c9f6c JS |
75 | module_param(lpfc_debugfs_enable, int, 0); |
76 | MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services"); | |
77 | ||
a58cbd52 JS |
78 | /* This MUST be a power of 2 */ |
79 | static int lpfc_debugfs_max_disc_trc = 0; | |
858c9f6c JS |
80 | module_param(lpfc_debugfs_max_disc_trc, int, 0); |
81 | MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc, | |
82 | "Set debugfs discovery trace depth"); | |
83 | ||
a58cbd52 JS |
84 | /* This MUST be a power of 2 */ |
85 | static int lpfc_debugfs_max_slow_ring_trc = 0; | |
86 | module_param(lpfc_debugfs_max_slow_ring_trc, int, 0); | |
87 | MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc, | |
88 | "Set debugfs slow ring trace depth"); | |
89 | ||
858c9f6c JS |
90 | static int lpfc_debugfs_mask_disc_trc = 0; |
91 | module_param(lpfc_debugfs_mask_disc_trc, int, 0); | |
92 | MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, | |
93 | "Set debugfs discovery trace mask"); | |
94 | ||
95 | #include <linux/debugfs.h> | |
96 | ||
a58cbd52 JS |
97 | /* size of output line, for discovery_trace and slow_ring_trace */ |
98 | #define LPFC_DEBUG_TRC_ENTRY_SIZE 100 | |
858c9f6c JS |
99 | |
100 | /* nodelist output buffer size */ | |
101 | #define LPFC_NODELIST_SIZE 8192 | |
102 | #define LPFC_NODELIST_ENTRY_SIZE 120 | |
103 | ||
78b2d852 | 104 | /* dumpslim output buffer size */ |
a58cbd52 JS |
105 | #define LPFC_DUMPSLIM_SIZE 4096 |
106 | ||
78b2d852 JS |
107 | /* hbqinfo output buffer size */ |
108 | #define LPFC_HBQINFO_SIZE 8192 | |
109 | ||
858c9f6c JS |
110 | struct lpfc_debug { |
111 | char *buffer; | |
112 | int len; | |
113 | }; | |
114 | ||
311464ec JS |
115 | static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); |
116 | static unsigned long lpfc_debugfs_start_time = 0L; | |
858c9f6c JS |
117 | |
118 | static int | |
119 | lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) | |
120 | { | |
121 | int i, index, len, enable; | |
122 | uint32_t ms; | |
a58cbd52 JS |
123 | struct lpfc_debugfs_trc *dtp; |
124 | char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; | |
858c9f6c JS |
125 | |
126 | ||
127 | enable = lpfc_debugfs_enable; | |
128 | lpfc_debugfs_enable = 0; | |
129 | ||
130 | len = 0; | |
131 | index = (atomic_read(&vport->disc_trc_cnt) + 1) & | |
132 | (lpfc_debugfs_max_disc_trc - 1); | |
133 | for (i = index; i < lpfc_debugfs_max_disc_trc; i++) { | |
134 | dtp = vport->disc_trc + i; | |
135 | if (!dtp->fmt) | |
136 | continue; | |
137 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
a58cbd52 JS |
138 | snprintf(buffer, |
139 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
858c9f6c JS |
140 | dtp->seq_cnt, ms, dtp->fmt); |
141 | len += snprintf(buf+len, size-len, buffer, | |
142 | dtp->data1, dtp->data2, dtp->data3); | |
143 | } | |
144 | for (i = 0; i < index; i++) { | |
145 | dtp = vport->disc_trc + i; | |
146 | if (!dtp->fmt) | |
147 | continue; | |
148 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
a58cbd52 JS |
149 | snprintf(buffer, |
150 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
151 | dtp->seq_cnt, ms, dtp->fmt); | |
152 | len += snprintf(buf+len, size-len, buffer, | |
153 | dtp->data1, dtp->data2, dtp->data3); | |
154 | } | |
155 | ||
156 | lpfc_debugfs_enable = enable; | |
157 | return len; | |
158 | } | |
159 | ||
160 | static int | |
161 | lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) | |
162 | { | |
163 | int i, index, len, enable; | |
164 | uint32_t ms; | |
165 | struct lpfc_debugfs_trc *dtp; | |
166 | char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; | |
167 | ||
168 | ||
169 | enable = lpfc_debugfs_enable; | |
170 | lpfc_debugfs_enable = 0; | |
171 | ||
172 | len = 0; | |
173 | index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & | |
174 | (lpfc_debugfs_max_slow_ring_trc - 1); | |
175 | for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { | |
176 | dtp = phba->slow_ring_trc + i; | |
177 | if (!dtp->fmt) | |
178 | continue; | |
179 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
180 | snprintf(buffer, | |
181 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
182 | dtp->seq_cnt, ms, dtp->fmt); | |
183 | len += snprintf(buf+len, size-len, buffer, | |
184 | dtp->data1, dtp->data2, dtp->data3); | |
185 | } | |
186 | for (i = 0; i < index; i++) { | |
187 | dtp = phba->slow_ring_trc + i; | |
188 | if (!dtp->fmt) | |
189 | continue; | |
190 | ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); | |
191 | snprintf(buffer, | |
192 | LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", | |
858c9f6c JS |
193 | dtp->seq_cnt, ms, dtp->fmt); |
194 | len += snprintf(buf+len, size-len, buffer, | |
195 | dtp->data1, dtp->data2, dtp->data3); | |
196 | } | |
197 | ||
198 | lpfc_debugfs_enable = enable; | |
199 | return len; | |
200 | } | |
201 | ||
311464ec | 202 | static int lpfc_debugfs_last_hbq = -1; |
78b2d852 JS |
203 | |
204 | static int | |
205 | lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size) | |
206 | { | |
207 | int len = 0; | |
208 | int cnt, i, j, found, posted, low; | |
209 | uint32_t phys, raw_index, getidx; | |
210 | struct lpfc_hbq_init *hip; | |
211 | struct hbq_s *hbqs; | |
212 | struct lpfc_hbq_entry *hbqe; | |
213 | struct lpfc_dmabuf *d_buf; | |
214 | struct hbq_dmabuf *hbq_buf; | |
215 | ||
216 | cnt = LPFC_HBQINFO_SIZE; | |
217 | spin_lock_irq(&phba->hbalock); | |
218 | ||
219 | /* toggle between multiple hbqs, if any */ | |
220 | i = lpfc_sli_hbq_count(); | |
221 | if (i > 1) { | |
222 | lpfc_debugfs_last_hbq++; | |
223 | if (lpfc_debugfs_last_hbq >= i) | |
224 | lpfc_debugfs_last_hbq = 0; | |
225 | } | |
226 | else | |
227 | lpfc_debugfs_last_hbq = 0; | |
228 | ||
229 | i = lpfc_debugfs_last_hbq; | |
230 | ||
231 | len += snprintf(buf+len, size-len, "HBQ %d Info\n", i); | |
232 | ||
51ef4c26 | 233 | hbqs = &phba->hbqs[i]; |
78b2d852 | 234 | posted = 0; |
51ef4c26 | 235 | list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) |
78b2d852 JS |
236 | posted++; |
237 | ||
238 | hip = lpfc_hbq_defs[i]; | |
239 | len += snprintf(buf+len, size-len, | |
240 | "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n", | |
241 | hip->hbq_index, hip->profile, hip->rn, | |
242 | hip->buffer_count, hip->init_count, hip->add_count, posted); | |
243 | ||
78b2d852 JS |
244 | raw_index = phba->hbq_get[i]; |
245 | getidx = le32_to_cpu(raw_index); | |
246 | len += snprintf(buf+len, size-len, | |
247 | "entrys:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n", | |
248 | hbqs->entry_count, hbqs->hbqPutIdx, hbqs->next_hbqPutIdx, | |
249 | hbqs->local_hbqGetIdx, getidx); | |
250 | ||
51ef4c26 | 251 | hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt; |
78b2d852 JS |
252 | for (j=0; j<hbqs->entry_count; j++) { |
253 | len += snprintf(buf+len, size-len, | |
254 | "%03d: %08x %04x %05x ", j, | |
255 | hbqe->bde.addrLow, hbqe->bde.tus.w, hbqe->buffer_tag); | |
256 | ||
257 | i = 0; | |
258 | found = 0; | |
259 | ||
260 | /* First calculate if slot has an associated posted buffer */ | |
261 | low = hbqs->hbqPutIdx - posted; | |
262 | if (low >= 0) { | |
263 | if ((j >= hbqs->hbqPutIdx) || (j < low)) { | |
264 | len += snprintf(buf+len, size-len, "Unused\n"); | |
265 | goto skipit; | |
266 | } | |
267 | } | |
268 | else { | |
269 | if ((j >= hbqs->hbqPutIdx) && | |
270 | (j < (hbqs->entry_count+low))) { | |
271 | len += snprintf(buf+len, size-len, "Unused\n"); | |
272 | goto skipit; | |
273 | } | |
274 | } | |
275 | ||
276 | /* Get the Buffer info for the posted buffer */ | |
51ef4c26 | 277 | list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) { |
78b2d852 JS |
278 | hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); |
279 | phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff); | |
280 | if (phys == hbqe->bde.addrLow) { | |
281 | len += snprintf(buf+len, size-len, | |
282 | "Buf%d: %p %06x\n", i, | |
283 | hbq_buf->dbuf.virt, hbq_buf->tag); | |
284 | found = 1; | |
285 | break; | |
286 | } | |
287 | i++; | |
288 | } | |
289 | if (!found) { | |
290 | len += snprintf(buf+len, size-len, "No DMAinfo?\n"); | |
291 | } | |
292 | skipit: | |
293 | hbqe++; | |
294 | if (len > LPFC_HBQINFO_SIZE - 54) | |
295 | break; | |
296 | } | |
297 | spin_unlock_irq(&phba->hbalock); | |
298 | return len; | |
299 | } | |
300 | ||
a58cbd52 JS |
301 | static int |
302 | lpfc_debugfs_dumpslim_data(struct lpfc_hba *phba, char *buf, int size) | |
303 | { | |
304 | int len = 0; | |
305 | int cnt, i, off; | |
306 | uint32_t word0, word1, word2, word3; | |
307 | uint32_t *ptr; | |
308 | struct lpfc_pgp *pgpp; | |
309 | struct lpfc_sli *psli = &phba->sli; | |
310 | struct lpfc_sli_ring *pring; | |
311 | ||
312 | cnt = LPFC_DUMPSLIM_SIZE; | |
313 | off = 0; | |
314 | spin_lock_irq(&phba->hbalock); | |
315 | ||
316 | len += snprintf(buf+len, size-len, "SLIM Mailbox\n"); | |
317 | ptr = (uint32_t *)phba->slim2p; | |
318 | i = sizeof(MAILBOX_t); | |
319 | while (i > 0) { | |
320 | len += snprintf(buf+len, size-len, | |
321 | "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", | |
322 | off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), | |
323 | *(ptr+5), *(ptr+6), *(ptr+7)); | |
324 | ptr += 8; | |
325 | i -= (8 * sizeof(uint32_t)); | |
326 | off += (8 * sizeof(uint32_t)); | |
327 | } | |
328 | ||
329 | len += snprintf(buf+len, size-len, "SLIM PCB\n"); | |
330 | ptr = (uint32_t *)&phba->slim2p->pcb; | |
331 | i = sizeof(PCB_t); | |
332 | while (i > 0) { | |
333 | len += snprintf(buf+len, size-len, | |
334 | "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", | |
335 | off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), | |
336 | *(ptr+5), *(ptr+6), *(ptr+7)); | |
337 | ptr += 8; | |
338 | i -= (8 * sizeof(uint32_t)); | |
339 | off += (8 * sizeof(uint32_t)); | |
340 | } | |
341 | ||
342 | pgpp = (struct lpfc_pgp *)&phba->slim2p->mbx.us.s3_pgp.port; | |
343 | pring = &psli->ring[0]; | |
344 | len += snprintf(buf+len, size-len, | |
345 | "Ring 0: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
346 | "RSP PutInx:%d Max:%d\n", | |
347 | pgpp->cmdGetInx, pring->numCiocb, | |
348 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
349 | pgpp->rspPutInx, pring->numRiocb); | |
350 | pgpp++; | |
351 | ||
352 | pring = &psli->ring[1]; | |
353 | len += snprintf(buf+len, size-len, | |
354 | "Ring 1: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
355 | "RSP PutInx:%d Max:%d\n", | |
356 | pgpp->cmdGetInx, pring->numCiocb, | |
357 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
358 | pgpp->rspPutInx, pring->numRiocb); | |
359 | pgpp++; | |
360 | ||
361 | pring = &psli->ring[2]; | |
362 | len += snprintf(buf+len, size-len, | |
363 | "Ring 2: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
364 | "RSP PutInx:%d Max:%d\n", | |
365 | pgpp->cmdGetInx, pring->numCiocb, | |
366 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
367 | pgpp->rspPutInx, pring->numRiocb); | |
368 | pgpp++; | |
369 | ||
370 | pring = &psli->ring[3]; | |
371 | len += snprintf(buf+len, size-len, | |
372 | "Ring 3: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) " | |
373 | "RSP PutInx:%d Max:%d\n", | |
374 | pgpp->cmdGetInx, pring->numCiocb, | |
375 | pring->next_cmdidx, pring->local_getidx, pring->flag, | |
376 | pgpp->rspPutInx, pring->numRiocb); | |
377 | ||
378 | ||
379 | ptr = (uint32_t *)&phba->slim2p->mbx.us.s3_pgp.hbq_get; | |
380 | word0 = readl(phba->HAregaddr); | |
381 | word1 = readl(phba->CAregaddr); | |
382 | word2 = readl(phba->HSregaddr); | |
383 | word3 = readl(phba->HCregaddr); | |
384 | len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x HC:%08x\n", | |
385 | word0, word1, word2, word3); | |
386 | spin_unlock_irq(&phba->hbalock); | |
387 | return len; | |
388 | } | |
389 | ||
858c9f6c JS |
390 | static int |
391 | lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size) | |
392 | { | |
393 | int len = 0; | |
394 | int cnt; | |
395 | struct Scsi_Host *shost = lpfc_shost_from_vport(vport); | |
396 | struct lpfc_nodelist *ndlp; | |
397 | unsigned char *statep, *name; | |
398 | ||
399 | cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE); | |
400 | ||
401 | spin_lock_irq(shost->host_lock); | |
402 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
403 | if (!cnt) { | |
404 | len += snprintf(buf+len, size-len, | |
405 | "Missing Nodelist Entries\n"); | |
406 | break; | |
407 | } | |
408 | cnt--; | |
409 | switch (ndlp->nlp_state) { | |
410 | case NLP_STE_UNUSED_NODE: | |
411 | statep = "UNUSED"; | |
412 | break; | |
413 | case NLP_STE_PLOGI_ISSUE: | |
414 | statep = "PLOGI "; | |
415 | break; | |
416 | case NLP_STE_ADISC_ISSUE: | |
417 | statep = "ADISC "; | |
418 | break; | |
419 | case NLP_STE_REG_LOGIN_ISSUE: | |
420 | statep = "REGLOG"; | |
421 | break; | |
422 | case NLP_STE_PRLI_ISSUE: | |
423 | statep = "PRLI "; | |
424 | break; | |
425 | case NLP_STE_UNMAPPED_NODE: | |
426 | statep = "UNMAP "; | |
427 | break; | |
428 | case NLP_STE_MAPPED_NODE: | |
429 | statep = "MAPPED"; | |
430 | break; | |
431 | case NLP_STE_NPR_NODE: | |
432 | statep = "NPR "; | |
433 | break; | |
434 | default: | |
435 | statep = "UNKNOWN"; | |
436 | } | |
437 | len += snprintf(buf+len, size-len, "%s DID:x%06x ", | |
438 | statep, ndlp->nlp_DID); | |
439 | name = (unsigned char *)&ndlp->nlp_portname; | |
440 | len += snprintf(buf+len, size-len, | |
441 | "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", | |
442 | *name, *(name+1), *(name+2), *(name+3), | |
443 | *(name+4), *(name+5), *(name+6), *(name+7)); | |
444 | name = (unsigned char *)&ndlp->nlp_nodename; | |
445 | len += snprintf(buf+len, size-len, | |
446 | "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", | |
447 | *name, *(name+1), *(name+2), *(name+3), | |
448 | *(name+4), *(name+5), *(name+6), *(name+7)); | |
449 | len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ", | |
450 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
451 | if (!ndlp->nlp_type) | |
a58cbd52 | 452 | len += snprintf(buf+len, size-len, "UNKNOWN_TYPE "); |
858c9f6c JS |
453 | if (ndlp->nlp_type & NLP_FC_NODE) |
454 | len += snprintf(buf+len, size-len, "FC_NODE "); | |
455 | if (ndlp->nlp_type & NLP_FABRIC) | |
456 | len += snprintf(buf+len, size-len, "FABRIC "); | |
457 | if (ndlp->nlp_type & NLP_FCP_TARGET) | |
458 | len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ", | |
459 | ndlp->nlp_sid); | |
460 | if (ndlp->nlp_type & NLP_FCP_INITIATOR) | |
a58cbd52 JS |
461 | len += snprintf(buf+len, size-len, "FCP_INITIATOR "); |
462 | len += snprintf(buf+len, size-len, "refcnt:%x", | |
463 | atomic_read(&ndlp->kref.refcount)); | |
858c9f6c JS |
464 | len += snprintf(buf+len, size-len, "\n"); |
465 | } | |
466 | spin_unlock_irq(shost->host_lock); | |
467 | return len; | |
468 | } | |
469 | #endif | |
470 | ||
471 | ||
472 | inline void | |
473 | lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, | |
474 | uint32_t data1, uint32_t data2, uint32_t data3) | |
475 | { | |
476 | #ifdef CONFIG_LPFC_DEBUG_FS | |
a58cbd52 | 477 | struct lpfc_debugfs_trc *dtp; |
858c9f6c JS |
478 | int index; |
479 | ||
480 | if (!(lpfc_debugfs_mask_disc_trc & mask)) | |
481 | return; | |
482 | ||
483 | if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc || | |
484 | !vport || !vport->disc_trc) | |
485 | return; | |
486 | ||
487 | index = atomic_inc_return(&vport->disc_trc_cnt) & | |
488 | (lpfc_debugfs_max_disc_trc - 1); | |
489 | dtp = vport->disc_trc + index; | |
490 | dtp->fmt = fmt; | |
491 | dtp->data1 = data1; | |
492 | dtp->data2 = data2; | |
493 | dtp->data3 = data3; | |
a58cbd52 JS |
494 | dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); |
495 | dtp->jif = jiffies; | |
496 | #endif | |
497 | return; | |
498 | } | |
499 | ||
500 | inline void | |
501 | lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, | |
502 | uint32_t data1, uint32_t data2, uint32_t data3) | |
503 | { | |
504 | #ifdef CONFIG_LPFC_DEBUG_FS | |
505 | struct lpfc_debugfs_trc *dtp; | |
506 | int index; | |
507 | ||
508 | if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc || | |
509 | !phba || !phba->slow_ring_trc) | |
510 | return; | |
511 | ||
512 | index = atomic_inc_return(&phba->slow_ring_trc_cnt) & | |
513 | (lpfc_debugfs_max_slow_ring_trc - 1); | |
514 | dtp = phba->slow_ring_trc + index; | |
515 | dtp->fmt = fmt; | |
516 | dtp->data1 = data1; | |
517 | dtp->data2 = data2; | |
518 | dtp->data3 = data3; | |
519 | dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); | |
858c9f6c JS |
520 | dtp->jif = jiffies; |
521 | #endif | |
522 | return; | |
523 | } | |
524 | ||
525 | #ifdef CONFIG_LPFC_DEBUG_FS | |
526 | static int | |
527 | lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file) | |
528 | { | |
529 | struct lpfc_vport *vport = inode->i_private; | |
530 | struct lpfc_debug *debug; | |
531 | int size; | |
532 | int rc = -ENOMEM; | |
533 | ||
534 | if (!lpfc_debugfs_max_disc_trc) { | |
535 | rc = -ENOSPC; | |
536 | goto out; | |
537 | } | |
538 | ||
539 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
540 | if (!debug) | |
541 | goto out; | |
542 | ||
543 | /* Round to page boundry */ | |
a58cbd52 | 544 | size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); |
858c9f6c JS |
545 | size = PAGE_ALIGN(size); |
546 | ||
547 | debug->buffer = kmalloc(size, GFP_KERNEL); | |
548 | if (!debug->buffer) { | |
549 | kfree(debug); | |
550 | goto out; | |
551 | } | |
552 | ||
553 | debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size); | |
554 | file->private_data = debug; | |
555 | ||
556 | rc = 0; | |
557 | out: | |
558 | return rc; | |
559 | } | |
560 | ||
a58cbd52 JS |
561 | static int |
562 | lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file) | |
563 | { | |
564 | struct lpfc_hba *phba = inode->i_private; | |
565 | struct lpfc_debug *debug; | |
566 | int size; | |
567 | int rc = -ENOMEM; | |
568 | ||
569 | if (!lpfc_debugfs_max_slow_ring_trc) { | |
570 | rc = -ENOSPC; | |
571 | goto out; | |
572 | } | |
573 | ||
574 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
575 | if (!debug) | |
576 | goto out; | |
577 | ||
578 | /* Round to page boundry */ | |
579 | size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); | |
580 | size = PAGE_ALIGN(size); | |
581 | ||
582 | debug->buffer = kmalloc(size, GFP_KERNEL); | |
583 | if (!debug->buffer) { | |
584 | kfree(debug); | |
585 | goto out; | |
586 | } | |
587 | ||
588 | debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size); | |
589 | file->private_data = debug; | |
590 | ||
591 | rc = 0; | |
592 | out: | |
593 | return rc; | |
594 | } | |
595 | ||
78b2d852 JS |
596 | static int |
597 | lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) | |
598 | { | |
599 | struct lpfc_hba *phba = inode->i_private; | |
600 | struct lpfc_debug *debug; | |
601 | int rc = -ENOMEM; | |
602 | ||
603 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
604 | if (!debug) | |
605 | goto out; | |
606 | ||
607 | /* Round to page boundry */ | |
608 | debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL); | |
609 | if (!debug->buffer) { | |
610 | kfree(debug); | |
611 | goto out; | |
612 | } | |
613 | ||
614 | debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer, | |
615 | LPFC_HBQINFO_SIZE); | |
616 | file->private_data = debug; | |
617 | ||
618 | rc = 0; | |
619 | out: | |
620 | return rc; | |
621 | } | |
622 | ||
a58cbd52 JS |
623 | static int |
624 | lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file) | |
625 | { | |
626 | struct lpfc_hba *phba = inode->i_private; | |
627 | struct lpfc_debug *debug; | |
628 | int rc = -ENOMEM; | |
629 | ||
630 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
631 | if (!debug) | |
632 | goto out; | |
633 | ||
634 | /* Round to page boundry */ | |
635 | debug->buffer = kmalloc(LPFC_DUMPSLIM_SIZE, GFP_KERNEL); | |
636 | if (!debug->buffer) { | |
637 | kfree(debug); | |
638 | goto out; | |
639 | } | |
640 | ||
641 | debug->len = lpfc_debugfs_dumpslim_data(phba, debug->buffer, | |
642 | LPFC_DUMPSLIM_SIZE); | |
643 | file->private_data = debug; | |
644 | ||
645 | rc = 0; | |
646 | out: | |
647 | return rc; | |
648 | } | |
649 | ||
858c9f6c JS |
650 | static int |
651 | lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file) | |
652 | { | |
653 | struct lpfc_vport *vport = inode->i_private; | |
654 | struct lpfc_debug *debug; | |
655 | int rc = -ENOMEM; | |
656 | ||
657 | debug = kmalloc(sizeof(*debug), GFP_KERNEL); | |
658 | if (!debug) | |
659 | goto out; | |
660 | ||
661 | /* Round to page boundry */ | |
662 | debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL); | |
663 | if (!debug->buffer) { | |
664 | kfree(debug); | |
665 | goto out; | |
666 | } | |
667 | ||
668 | debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer, | |
669 | LPFC_NODELIST_SIZE); | |
670 | file->private_data = debug; | |
671 | ||
672 | rc = 0; | |
673 | out: | |
674 | return rc; | |
675 | } | |
676 | ||
677 | static loff_t | |
678 | lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) | |
679 | { | |
680 | struct lpfc_debug *debug; | |
681 | loff_t pos = -1; | |
682 | ||
683 | debug = file->private_data; | |
684 | ||
685 | switch (whence) { | |
686 | case 0: | |
687 | pos = off; | |
688 | break; | |
689 | case 1: | |
690 | pos = file->f_pos + off; | |
691 | break; | |
692 | case 2: | |
693 | pos = debug->len - off; | |
694 | } | |
695 | return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); | |
696 | } | |
697 | ||
698 | static ssize_t | |
699 | lpfc_debugfs_read(struct file *file, char __user *buf, | |
700 | size_t nbytes, loff_t *ppos) | |
701 | { | |
702 | struct lpfc_debug *debug = file->private_data; | |
703 | return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer, | |
704 | debug->len); | |
705 | } | |
706 | ||
707 | static int | |
708 | lpfc_debugfs_release(struct inode *inode, struct file *file) | |
709 | { | |
710 | struct lpfc_debug *debug = file->private_data; | |
711 | ||
712 | kfree(debug->buffer); | |
713 | kfree(debug); | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
718 | #undef lpfc_debugfs_op_disc_trc | |
719 | static struct file_operations lpfc_debugfs_op_disc_trc = { | |
720 | .owner = THIS_MODULE, | |
721 | .open = lpfc_debugfs_disc_trc_open, | |
722 | .llseek = lpfc_debugfs_lseek, | |
723 | .read = lpfc_debugfs_read, | |
724 | .release = lpfc_debugfs_release, | |
725 | }; | |
726 | ||
727 | #undef lpfc_debugfs_op_nodelist | |
728 | static struct file_operations lpfc_debugfs_op_nodelist = { | |
729 | .owner = THIS_MODULE, | |
730 | .open = lpfc_debugfs_nodelist_open, | |
731 | .llseek = lpfc_debugfs_lseek, | |
732 | .read = lpfc_debugfs_read, | |
733 | .release = lpfc_debugfs_release, | |
734 | }; | |
735 | ||
78b2d852 JS |
736 | #undef lpfc_debugfs_op_hbqinfo |
737 | static struct file_operations lpfc_debugfs_op_hbqinfo = { | |
738 | .owner = THIS_MODULE, | |
739 | .open = lpfc_debugfs_hbqinfo_open, | |
740 | .llseek = lpfc_debugfs_lseek, | |
741 | .read = lpfc_debugfs_read, | |
742 | .release = lpfc_debugfs_release, | |
743 | }; | |
744 | ||
a58cbd52 JS |
745 | #undef lpfc_debugfs_op_dumpslim |
746 | static struct file_operations lpfc_debugfs_op_dumpslim = { | |
747 | .owner = THIS_MODULE, | |
748 | .open = lpfc_debugfs_dumpslim_open, | |
749 | .llseek = lpfc_debugfs_lseek, | |
750 | .read = lpfc_debugfs_read, | |
751 | .release = lpfc_debugfs_release, | |
752 | }; | |
753 | ||
754 | #undef lpfc_debugfs_op_slow_ring_trc | |
755 | static struct file_operations lpfc_debugfs_op_slow_ring_trc = { | |
756 | .owner = THIS_MODULE, | |
757 | .open = lpfc_debugfs_slow_ring_trc_open, | |
758 | .llseek = lpfc_debugfs_lseek, | |
759 | .read = lpfc_debugfs_read, | |
760 | .release = lpfc_debugfs_release, | |
761 | }; | |
762 | ||
858c9f6c JS |
763 | static struct dentry *lpfc_debugfs_root = NULL; |
764 | static atomic_t lpfc_debugfs_hba_count; | |
765 | #endif | |
766 | ||
767 | inline void | |
768 | lpfc_debugfs_initialize(struct lpfc_vport *vport) | |
769 | { | |
770 | #ifdef CONFIG_LPFC_DEBUG_FS | |
771 | struct lpfc_hba *phba = vport->phba; | |
772 | char name[64]; | |
773 | uint32_t num, i; | |
774 | ||
775 | if (!lpfc_debugfs_enable) | |
776 | return; | |
777 | ||
a58cbd52 | 778 | /* Setup lpfc root directory */ |
858c9f6c JS |
779 | if (!lpfc_debugfs_root) { |
780 | lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); | |
781 | atomic_set(&lpfc_debugfs_hba_count, 0); | |
a58cbd52 | 782 | if (!lpfc_debugfs_root) { |
e8b62011 JS |
783 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
784 | "0409 Cannot create debugfs root\n"); | |
858c9f6c | 785 | goto debug_failed; |
a58cbd52 | 786 | } |
858c9f6c | 787 | } |
a58cbd52 JS |
788 | if (!lpfc_debugfs_start_time) |
789 | lpfc_debugfs_start_time = jiffies; | |
790 | ||
791 | /* Setup lpfcX directory for specific HBA */ | |
858c9f6c JS |
792 | snprintf(name, sizeof(name), "lpfc%d", phba->brd_no); |
793 | if (!phba->hba_debugfs_root) { | |
794 | phba->hba_debugfs_root = | |
795 | debugfs_create_dir(name, lpfc_debugfs_root); | |
a58cbd52 | 796 | if (!phba->hba_debugfs_root) { |
e8b62011 JS |
797 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
798 | "0409 Cannot create debugfs hba\n"); | |
858c9f6c | 799 | goto debug_failed; |
a58cbd52 | 800 | } |
858c9f6c JS |
801 | atomic_inc(&lpfc_debugfs_hba_count); |
802 | atomic_set(&phba->debugfs_vport_count, 0); | |
a58cbd52 | 803 | |
78b2d852 JS |
804 | /* Setup hbqinfo */ |
805 | snprintf(name, sizeof(name), "hbqinfo"); | |
806 | phba->debug_hbqinfo = | |
807 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
808 | phba->hba_debugfs_root, | |
809 | phba, &lpfc_debugfs_op_hbqinfo); | |
810 | if (!phba->debug_hbqinfo) { | |
811 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, | |
812 | "0409 Cannot create debugfs hbqinfo\n"); | |
813 | goto debug_failed; | |
814 | } | |
815 | ||
a58cbd52 JS |
816 | /* Setup dumpslim */ |
817 | snprintf(name, sizeof(name), "dumpslim"); | |
818 | phba->debug_dumpslim = | |
819 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
820 | phba->hba_debugfs_root, | |
821 | phba, &lpfc_debugfs_op_dumpslim); | |
822 | if (!phba->debug_dumpslim) { | |
e8b62011 JS |
823 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
824 | "0409 Cannot create debugfs dumpslim\n"); | |
a58cbd52 JS |
825 | goto debug_failed; |
826 | } | |
827 | ||
828 | /* Setup slow ring trace */ | |
829 | if (lpfc_debugfs_max_slow_ring_trc) { | |
830 | num = lpfc_debugfs_max_slow_ring_trc - 1; | |
831 | if (num & lpfc_debugfs_max_slow_ring_trc) { | |
832 | /* Change to be a power of 2 */ | |
833 | num = lpfc_debugfs_max_slow_ring_trc; | |
834 | i = 0; | |
835 | while (num > 1) { | |
836 | num = num >> 1; | |
837 | i++; | |
838 | } | |
839 | lpfc_debugfs_max_slow_ring_trc = (1 << i); | |
840 | printk(KERN_ERR | |
e8b62011 JS |
841 | "lpfc_debugfs_max_disc_trc changed to " |
842 | "%d\n", lpfc_debugfs_max_disc_trc); | |
a58cbd52 JS |
843 | } |
844 | } | |
845 | ||
846 | ||
847 | snprintf(name, sizeof(name), "slow_ring_trace"); | |
848 | phba->debug_slow_ring_trc = | |
849 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
850 | phba->hba_debugfs_root, | |
851 | phba, &lpfc_debugfs_op_slow_ring_trc); | |
852 | if (!phba->debug_slow_ring_trc) { | |
e8b62011 JS |
853 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
854 | "0409 Cannot create debugfs " | |
855 | "slow_ring_trace\n"); | |
a58cbd52 JS |
856 | goto debug_failed; |
857 | } | |
858 | if (!phba->slow_ring_trc) { | |
859 | phba->slow_ring_trc = kmalloc( | |
860 | (sizeof(struct lpfc_debugfs_trc) * | |
861 | lpfc_debugfs_max_slow_ring_trc), | |
862 | GFP_KERNEL); | |
863 | if (!phba->slow_ring_trc) { | |
e8b62011 JS |
864 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
865 | "0409 Cannot create debugfs " | |
866 | "slow_ring buffer\n"); | |
a58cbd52 JS |
867 | goto debug_failed; |
868 | } | |
869 | atomic_set(&phba->slow_ring_trc_cnt, 0); | |
870 | memset(phba->slow_ring_trc, 0, | |
871 | (sizeof(struct lpfc_debugfs_trc) * | |
872 | lpfc_debugfs_max_slow_ring_trc)); | |
873 | } | |
858c9f6c JS |
874 | } |
875 | ||
876 | snprintf(name, sizeof(name), "vport%d", vport->vpi); | |
877 | if (!vport->vport_debugfs_root) { | |
878 | vport->vport_debugfs_root = | |
879 | debugfs_create_dir(name, phba->hba_debugfs_root); | |
a58cbd52 | 880 | if (!vport->vport_debugfs_root) { |
e8b62011 JS |
881 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
882 | "0409 Cant create debugfs"); | |
858c9f6c | 883 | goto debug_failed; |
a58cbd52 | 884 | } |
858c9f6c JS |
885 | atomic_inc(&phba->debugfs_vport_count); |
886 | } | |
887 | ||
a58cbd52 JS |
888 | if (lpfc_debugfs_max_disc_trc) { |
889 | num = lpfc_debugfs_max_disc_trc - 1; | |
890 | if (num & lpfc_debugfs_max_disc_trc) { | |
891 | /* Change to be a power of 2 */ | |
892 | num = lpfc_debugfs_max_disc_trc; | |
893 | i = 0; | |
894 | while (num > 1) { | |
895 | num = num >> 1; | |
896 | i++; | |
897 | } | |
898 | lpfc_debugfs_max_disc_trc = (1 << i); | |
899 | printk(KERN_ERR | |
e8b62011 JS |
900 | "lpfc_debugfs_max_disc_trc changed to %d\n", |
901 | lpfc_debugfs_max_disc_trc); | |
a58cbd52 JS |
902 | } |
903 | } | |
858c9f6c JS |
904 | |
905 | vport->disc_trc = kmalloc( | |
a58cbd52 | 906 | (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), |
858c9f6c JS |
907 | GFP_KERNEL); |
908 | ||
a58cbd52 | 909 | if (!vport->disc_trc) { |
e8b62011 JS |
910 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
911 | "0409 Cannot create debugfs disc trace " | |
912 | "buffer\n"); | |
858c9f6c | 913 | goto debug_failed; |
a58cbd52 JS |
914 | } |
915 | atomic_set(&vport->disc_trc_cnt, 0); | |
858c9f6c | 916 | memset(vport->disc_trc, 0, |
a58cbd52 | 917 | (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc)); |
858c9f6c JS |
918 | |
919 | snprintf(name, sizeof(name), "discovery_trace"); | |
920 | vport->debug_disc_trc = | |
921 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
922 | vport->vport_debugfs_root, | |
923 | vport, &lpfc_debugfs_op_disc_trc); | |
924 | if (!vport->debug_disc_trc) { | |
e8b62011 JS |
925 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
926 | "0409 Cannot create debugfs " | |
927 | "discovery_trace\n"); | |
858c9f6c JS |
928 | goto debug_failed; |
929 | } | |
930 | snprintf(name, sizeof(name), "nodelist"); | |
931 | vport->debug_nodelist = | |
932 | debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, | |
933 | vport->vport_debugfs_root, | |
934 | vport, &lpfc_debugfs_op_nodelist); | |
935 | if (!vport->debug_nodelist) { | |
e8b62011 JS |
936 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, |
937 | "0409 Cant create debugfs nodelist"); | |
858c9f6c JS |
938 | goto debug_failed; |
939 | } | |
940 | debug_failed: | |
941 | return; | |
942 | #endif | |
943 | } | |
944 | ||
945 | ||
946 | inline void | |
947 | lpfc_debugfs_terminate(struct lpfc_vport *vport) | |
948 | { | |
949 | #ifdef CONFIG_LPFC_DEBUG_FS | |
950 | struct lpfc_hba *phba = vport->phba; | |
951 | ||
952 | if (vport->disc_trc) { | |
953 | kfree(vport->disc_trc); | |
954 | vport->disc_trc = NULL; | |
955 | } | |
956 | if (vport->debug_disc_trc) { | |
957 | debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ | |
958 | vport->debug_disc_trc = NULL; | |
959 | } | |
960 | if (vport->debug_nodelist) { | |
961 | debugfs_remove(vport->debug_nodelist); /* nodelist */ | |
962 | vport->debug_nodelist = NULL; | |
963 | } | |
a58cbd52 | 964 | |
858c9f6c JS |
965 | if (vport->vport_debugfs_root) { |
966 | debugfs_remove(vport->vport_debugfs_root); /* vportX */ | |
967 | vport->vport_debugfs_root = NULL; | |
968 | atomic_dec(&phba->debugfs_vport_count); | |
969 | } | |
970 | if (atomic_read(&phba->debugfs_vport_count) == 0) { | |
a58cbd52 | 971 | |
78b2d852 JS |
972 | if (phba->debug_hbqinfo) { |
973 | debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ | |
974 | phba->debug_hbqinfo = NULL; | |
975 | } | |
a58cbd52 JS |
976 | if (phba->debug_dumpslim) { |
977 | debugfs_remove(phba->debug_dumpslim); /* dumpslim */ | |
978 | phba->debug_dumpslim = NULL; | |
979 | } | |
980 | if (phba->slow_ring_trc) { | |
981 | kfree(phba->slow_ring_trc); | |
982 | phba->slow_ring_trc = NULL; | |
983 | } | |
984 | if (phba->debug_slow_ring_trc) { | |
985 | /* slow_ring_trace */ | |
986 | debugfs_remove(phba->debug_slow_ring_trc); | |
987 | phba->debug_slow_ring_trc = NULL; | |
988 | } | |
989 | ||
990 | if (phba->hba_debugfs_root) { | |
991 | debugfs_remove(phba->hba_debugfs_root); /* lpfcX */ | |
992 | phba->hba_debugfs_root = NULL; | |
993 | atomic_dec(&lpfc_debugfs_hba_count); | |
994 | } | |
995 | ||
858c9f6c JS |
996 | if (atomic_read(&lpfc_debugfs_hba_count) == 0) { |
997 | debugfs_remove(lpfc_debugfs_root); /* lpfc */ | |
998 | lpfc_debugfs_root = NULL; | |
999 | } | |
1000 | } | |
1001 | #endif | |
a58cbd52 | 1002 | return; |
858c9f6c JS |
1003 | } |
1004 | ||
1005 |