1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic Fibre Channel HBA Driver
4 * Copyright (c) 2003-2014 QLogic Corporation
5 */
6 #include "qla_def.h"
7
8 #include <linux/debugfs.h>
9 #include <linux/seq_file.h>
10
11 static struct dentry *qla2x00_dfs_root;
12 static atomic_t qla2x00_dfs_root_count;
13
14 #define QLA_DFS_RPORT_DEVLOSS_TMO 1
15
16 static int
qla_dfs_rport_get(struct fc_port * fp,int attr_id,u64 * val)17 qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val)
18 {
19 switch (attr_id) {
20 case QLA_DFS_RPORT_DEVLOSS_TMO:
21 /* Only supported for FC-NVMe devices that are registered. */
22 if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
23 return -EIO;
24 *val = fp->nvme_remote_port->dev_loss_tmo;
25 break;
26 default:
27 return -EINVAL;
28 }
29 return 0;
30 }
31
32 static int
qla_dfs_rport_set(struct fc_port * fp,int attr_id,u64 val)33 qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val)
34 {
35 switch (attr_id) {
36 case QLA_DFS_RPORT_DEVLOSS_TMO:
37 /* Only supported for FC-NVMe devices that are registered. */
38 if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
39 return -EIO;
40 #if (IS_ENABLED(CONFIG_NVME_FC))
41 return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port,
42 val);
43 #else /* CONFIG_NVME_FC */
44 return -EINVAL;
45 #endif /* CONFIG_NVME_FC */
46 default:
47 return -EINVAL;
48 }
49 return 0;
50 }
51
52 #define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr) \
53 static int qla_dfs_rport_##_attr##_get(void *data, u64 *val) \
54 { \
55 struct fc_port *fp = data; \
56 return qla_dfs_rport_get(fp, _attr_id, val); \
57 } \
58 static int qla_dfs_rport_##_attr##_set(void *data, u64 val) \
59 { \
60 struct fc_port *fp = data; \
61 return qla_dfs_rport_set(fp, _attr_id, val); \
62 } \
63 DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops, \
64 qla_dfs_rport_##_attr##_get, \
65 qla_dfs_rport_##_attr##_set, "%llu\n")
66
67 /*
68 * Wrapper for getting fc_port fields.
69 *
70 * _attr : Attribute name.
71 * _get_val : Accessor macro to retrieve the value.
72 */
73 #define DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val) \
74 static int qla_dfs_rport_field_##_attr##_get(void *data, u64 *val) \
75 { \
76 struct fc_port *fp = data; \
77 *val = _get_val; \
78 return 0; \
79 } \
80 DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_field_##_attr##_fops, \
81 qla_dfs_rport_field_##_attr##_get, \
82 NULL, "%llu\n")
83
84 #define DEFINE_QLA_DFS_RPORT_ACCESS(_attr, _get_val) \
85 DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val)
86
87 #define DEFINE_QLA_DFS_RPORT_FIELD(_attr) \
88 DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, fp->_attr)
89
90 DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo);
91
92 DEFINE_QLA_DFS_RPORT_FIELD(disc_state);
93 DEFINE_QLA_DFS_RPORT_FIELD(scan_state);
94 DEFINE_QLA_DFS_RPORT_FIELD(fw_login_state);
95 DEFINE_QLA_DFS_RPORT_FIELD(login_pause);
96 DEFINE_QLA_DFS_RPORT_FIELD(flags);
97 DEFINE_QLA_DFS_RPORT_FIELD(nvme_flag);
98 DEFINE_QLA_DFS_RPORT_FIELD(last_rscn_gen);
99 DEFINE_QLA_DFS_RPORT_FIELD(rscn_gen);
100 DEFINE_QLA_DFS_RPORT_FIELD(login_gen);
101 DEFINE_QLA_DFS_RPORT_FIELD(loop_id);
102 DEFINE_QLA_DFS_RPORT_FIELD_GET(port_id, fp->d_id.b24);
103 DEFINE_QLA_DFS_RPORT_FIELD_GET(sess_kref, kref_read(&fp->sess_kref));
104
105 void
qla2x00_dfs_create_rport(scsi_qla_host_t * vha,struct fc_port * fp)106 qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
107 {
108 char wwn[32];
109
110 #define QLA_CREATE_RPORT_FIELD_ATTR(_attr) \
111 debugfs_create_file(#_attr, 0400, fp->dfs_rport_dir, \
112 fp, &qla_dfs_rport_field_##_attr##_fops)
113
114 if (!vha->dfs_rport_root || fp->dfs_rport_dir)
115 return;
116
117 sprintf(wwn, "pn-%016llx", wwn_to_u64(fp->port_name));
118 fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root);
119 if (!fp->dfs_rport_dir)
120 return;
121 if (NVME_TARGET(vha->hw, fp))
122 debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir,
123 fp, &qla_dfs_rport_dev_loss_tmo_fops);
124
125 QLA_CREATE_RPORT_FIELD_ATTR(disc_state);
126 QLA_CREATE_RPORT_FIELD_ATTR(scan_state);
127 QLA_CREATE_RPORT_FIELD_ATTR(fw_login_state);
128 QLA_CREATE_RPORT_FIELD_ATTR(login_pause);
129 QLA_CREATE_RPORT_FIELD_ATTR(flags);
130 QLA_CREATE_RPORT_FIELD_ATTR(nvme_flag);
131 QLA_CREATE_RPORT_FIELD_ATTR(last_rscn_gen);
132 QLA_CREATE_RPORT_FIELD_ATTR(rscn_gen);
133 QLA_CREATE_RPORT_FIELD_ATTR(login_gen);
134 QLA_CREATE_RPORT_FIELD_ATTR(loop_id);
135 QLA_CREATE_RPORT_FIELD_ATTR(port_id);
136 QLA_CREATE_RPORT_FIELD_ATTR(sess_kref);
137 }
138
139 void
qla2x00_dfs_remove_rport(scsi_qla_host_t * vha,struct fc_port * fp)140 qla2x00_dfs_remove_rport(scsi_qla_host_t *vha, struct fc_port *fp)
141 {
142 if (!vha->dfs_rport_root || !fp->dfs_rport_dir)
143 return;
144 debugfs_remove_recursive(fp->dfs_rport_dir);
145 fp->dfs_rport_dir = NULL;
146 }
147
148 static int
qla2x00_dfs_tgt_sess_show(struct seq_file * s,void * unused)149 qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
150 {
151 scsi_qla_host_t *vha = s->private;
152 struct qla_hw_data *ha = vha->hw;
153 unsigned long flags;
154 struct fc_port *sess = NULL;
155 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
156
157 seq_printf(s, "%s\n", vha->host_str);
158 if (tgt) {
159 seq_puts(s, "Port ID Port Name Handle\n");
160
161 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
162 list_for_each_entry(sess, &vha->vp_fcports, list)
163 seq_printf(s, "%02x:%02x:%02x %8phC %d\n",
164 sess->d_id.b.domain, sess->d_id.b.area,
165 sess->d_id.b.al_pa, sess->port_name,
166 sess->loop_id);
167 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
168 }
169
170 return 0;
171 }
172
173 DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_sess);
174
175 static int
qla2x00_dfs_tgt_port_database_show(struct seq_file * s,void * unused)176 qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
177 {
178 scsi_qla_host_t *vha = s->private;
179 struct qla_hw_data *ha = vha->hw;
180 struct gid_list_info *gid_list;
181 dma_addr_t gid_list_dma;
182 fc_port_t fc_port;
183 char *id_iter;
184 int rc, i;
185 uint16_t entries, loop_id;
186
187 seq_printf(s, "%s\n", vha->host_str);
188 gid_list = dma_alloc_coherent(&ha->pdev->dev,
189 qla2x00_gid_list_size(ha),
190 &gid_list_dma, GFP_KERNEL);
191 if (!gid_list) {
192 ql_dbg(ql_dbg_user, vha, 0x7018,
193 "DMA allocation failed for %u\n",
194 qla2x00_gid_list_size(ha));
195 return 0;
196 }
197
198 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
199 &entries);
200 if (rc != QLA_SUCCESS)
201 goto out_free_id_list;
202
203 id_iter = (char *)gid_list;
204
205 seq_puts(s, "Port Name Port ID Loop ID\n");
206
207 for (i = 0; i < entries; i++) {
208 struct gid_list_info *gid =
209 (struct gid_list_info *)id_iter;
210 loop_id = le16_to_cpu(gid->loop_id);
211 memset(&fc_port, 0, sizeof(fc_port_t));
212
213 fc_port.loop_id = loop_id;
214
215 rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
216 seq_printf(s, "%8phC %02x%02x%02x %d\n",
217 fc_port.port_name, fc_port.d_id.b.domain,
218 fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
219 fc_port.loop_id);
220 id_iter += ha->gid_list_info_size;
221 }
222 out_free_id_list:
223 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
224 gid_list, gid_list_dma);
225
226 return 0;
227 }
228
229 DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_port_database);
230
231 static int
qla_dfs_fw_resource_cnt_show(struct seq_file * s,void * unused)232 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
233 {
234 struct scsi_qla_host *vha = s->private;
235 uint16_t mb[MAX_IOCB_MB_REG];
236 int rc;
237 struct qla_hw_data *ha = vha->hw;
238 u16 iocbs_used, i;
239
240 rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
241 if (rc != QLA_SUCCESS) {
242 seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]);
243 } else {
244 seq_puts(s, "FW Resource count\n\n");
245 seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]);
246 seq_printf(s, "Current TGT exchg count[%d]\n", mb[2]);
247 seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[3]);
248 seq_printf(s, "Original Initiator Exchange count[%d]\n", mb[6]);
249 seq_printf(s, "Current IOCB count[%d]\n", mb[7]);
250 seq_printf(s, "Original IOCB count[%d]\n", mb[10]);
251 seq_printf(s, "MAX VP count[%d]\n", mb[11]);
252 seq_printf(s, "MAX FCF count[%d]\n", mb[12]);
253 seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n",
254 mb[20]);
255 seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n",
256 mb[21]);
257 seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n",
258 mb[22]);
259 seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n",
260 mb[23]);
261 }
262
263 if (ql2xenforce_iocb_limit) {
264 /* lock is not require. It's an estimate. */
265 iocbs_used = ha->base_qpair->fwres.iocbs_used;
266 for (i = 0; i < ha->max_qpairs; i++) {
267 if (ha->queue_pair_map[i])
268 iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used;
269 }
270
271 seq_printf(s, "Driver: estimate iocb used [%d] high water limit [%d]\n",
272 iocbs_used, ha->base_qpair->fwres.iocbs_limit);
273 }
274
275 return 0;
276 }
277
278 DEFINE_SHOW_ATTRIBUTE(qla_dfs_fw_resource_cnt);
279
280 static int
qla_dfs_tgt_counters_show(struct seq_file * s,void * unused)281 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
282 {
283 struct scsi_qla_host *vha = s->private;
284 struct qla_qpair *qpair = vha->hw->base_qpair;
285 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,
286 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,
287 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;
288 u16 i;
289 fc_port_t *fcport = NULL;
290
291 if (qla2x00_chip_is_down(vha))
292 return 0;
293
294 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;
295 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;
296 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;
297 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;
298 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;
299 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;
300 num_q_full_sent = qpair->tgt_counters.num_q_full_sent;
301 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;
302 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;
303
304 for (i = 0; i < vha->hw->max_qpairs; i++) {
305 qpair = vha->hw->queue_pair_map[i];
306 if (!qpair)
307 continue;
308 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;
309 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;
310 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;
311 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;
312 qla_core_ret_sta_ctio +=
313 qpair->tgt_counters.qla_core_ret_sta_ctio;
314 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd;
315 num_q_full_sent += qpair->tgt_counters.num_q_full_sent;
316 num_alloc_iocb_failed +=
317 qpair->tgt_counters.num_alloc_iocb_failed;
318 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;
319 }
320
321 seq_puts(s, "Target Counters\n");
322 seq_printf(s, "qla_core_sbt_cmd = %lld\n",
323 qla_core_sbt_cmd);
324 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
325 qla_core_ret_sta_ctio);
326 seq_printf(s, "qla_core_ret_ctio = %lld\n",
327 qla_core_ret_ctio);
328 seq_printf(s, "core_qla_que_buf = %lld\n",
329 core_qla_que_buf);
330 seq_printf(s, "core_qla_snd_status = %lld\n",
331 core_qla_snd_status);
332 seq_printf(s, "core_qla_free_cmd = %lld\n",
333 core_qla_free_cmd);
334 seq_printf(s, "num alloc iocb failed = %lld\n",
335 num_alloc_iocb_failed);
336 seq_printf(s, "num term exchange sent = %lld\n",
337 num_term_xchg_sent);
338 seq_printf(s, "num Q full sent = %lld\n",
339 num_q_full_sent);
340
341 /* DIF stats */
342 seq_printf(s, "DIF Inp Bytes = %lld\n",
343 vha->qla_stats.qla_dif_stats.dif_input_bytes);
344 seq_printf(s, "DIF Outp Bytes = %lld\n",
345 vha->qla_stats.qla_dif_stats.dif_output_bytes);
346 seq_printf(s, "DIF Inp Req = %lld\n",
347 vha->qla_stats.qla_dif_stats.dif_input_requests);
348 seq_printf(s, "DIF Outp Req = %lld\n",
349 vha->qla_stats.qla_dif_stats.dif_output_requests);
350 seq_printf(s, "DIF Guard err = %d\n",
351 vha->qla_stats.qla_dif_stats.dif_guard_err);
352 seq_printf(s, "DIF Ref tag err = %d\n",
353 vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
354 seq_printf(s, "DIF App tag err = %d\n",
355 vha->qla_stats.qla_dif_stats.dif_app_tag_err);
356
357 seq_puts(s, "\n");
358 seq_puts(s, "Initiator Error Counters\n");
359 seq_printf(s, "HW Error Count = %14lld\n",
360 vha->hw_err_cnt);
361 seq_printf(s, "Link Down Count = %14lld\n",
362 vha->short_link_down_cnt);
363 seq_printf(s, "Interface Err Count = %14lld\n",
364 vha->interface_err_cnt);
365 seq_printf(s, "Cmd Timeout Count = %14lld\n",
366 vha->cmd_timeout_cnt);
367 seq_printf(s, "Reset Count = %14lld\n",
368 vha->reset_cmd_err_cnt);
369 seq_puts(s, "\n");
370
371 list_for_each_entry(fcport, &vha->vp_fcports, list) {
372 if (!fcport->rport)
373 continue;
374
375 seq_printf(s, "Target Num = %7d Link Down Count = %14lld\n",
376 fcport->rport->number, fcport->tgt_short_link_down_cnt);
377 }
378 seq_puts(s, "\n");
379
380 return 0;
381 }
382
383 DEFINE_SHOW_ATTRIBUTE(qla_dfs_tgt_counters);
384
385 static int
qla2x00_dfs_fce_show(struct seq_file * s,void * unused)386 qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
387 {
388 scsi_qla_host_t *vha = s->private;
389 uint32_t cnt;
390 uint32_t *fce;
391 uint64_t fce_start;
392 struct qla_hw_data *ha = vha->hw;
393
394 mutex_lock(&ha->fce_mutex);
395
396 seq_puts(s, "FCE Trace Buffer\n");
397 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
398 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
399 seq_puts(s, "FCE Enable Registers\n");
400 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
401 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
402 ha->fce_mb[5], ha->fce_mb[6]);
403
404 fce = (uint32_t *) ha->fce;
405 fce_start = (unsigned long long) ha->fce_dma;
406 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
407 if (cnt % 8 == 0)
408 seq_printf(s, "\n%llx: ",
409 (unsigned long long)((cnt * 4) + fce_start));
410 else
411 seq_putc(s, ' ');
412 seq_printf(s, "%08x", *fce++);
413 }
414
415 seq_puts(s, "\nEnd\n");
416
417 mutex_unlock(&ha->fce_mutex);
418
419 return 0;
420 }
421
422 static int
qla2x00_dfs_fce_open(struct inode * inode,struct file * file)423 qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
424 {
425 scsi_qla_host_t *vha = inode->i_private;
426 struct qla_hw_data *ha = vha->hw;
427 int rval;
428
429 if (!ha->flags.fce_enabled)
430 goto out;
431
432 mutex_lock(&ha->fce_mutex);
433
434 /* Pause tracing to flush FCE buffers. */
435 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
436 if (rval)
437 ql_dbg(ql_dbg_user, vha, 0x705c,
438 "DebugFS: Unable to disable FCE (%d).\n", rval);
439
440 ha->flags.fce_enabled = 0;
441
442 mutex_unlock(&ha->fce_mutex);
443 out:
444 return single_open(file, qla2x00_dfs_fce_show, vha);
445 }
446
447 static int
qla2x00_dfs_fce_release(struct inode * inode,struct file * file)448 qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
449 {
450 scsi_qla_host_t *vha = inode->i_private;
451 struct qla_hw_data *ha = vha->hw;
452 int rval;
453
454 if (ha->flags.fce_enabled)
455 goto out;
456
457 mutex_lock(&ha->fce_mutex);
458
459 /* Re-enable FCE tracing. */
460 ha->flags.fce_enabled = 1;
461 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
462 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
463 ha->fce_mb, &ha->fce_bufs);
464 if (rval) {
465 ql_dbg(ql_dbg_user, vha, 0x700d,
466 "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
467 ha->flags.fce_enabled = 0;
468 }
469
470 mutex_unlock(&ha->fce_mutex);
471 out:
472 return single_release(inode, file);
473 }
474
475 static const struct file_operations dfs_fce_ops = {
476 .open = qla2x00_dfs_fce_open,
477 .read = seq_read,
478 .llseek = seq_lseek,
479 .release = qla2x00_dfs_fce_release,
480 };
481
482 static int
qla_dfs_naqp_show(struct seq_file * s,void * unused)483 qla_dfs_naqp_show(struct seq_file *s, void *unused)
484 {
485 struct scsi_qla_host *vha = s->private;
486 struct qla_hw_data *ha = vha->hw;
487
488 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);
489 return 0;
490 }
491
492 /*
493 * Helper macros for setting up debugfs entries.
494 * _name: The name of the debugfs entry
495 * _ctx_struct: The context that was passed when creating the debugfs file
496 *
497 * QLA_DFS_SETUP_RD could be used when there is only a show function.
498 * - show function take the name qla_dfs_<sysfs-name>_show
499 *
500 * QLA_DFS_SETUP_RW could be used when there are both show and write functions.
501 * - show function take the name qla_dfs_<sysfs-name>_show
502 * - write function take the name qla_dfs_<sysfs-name>_write
503 *
504 * To have a new debugfs entry, do:
505 * 1. Create a "struct dentry *" in the appropriate structure in the format
506 * dfs_<sysfs-name>
507 * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW
508 * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE
509 * or QLA_DFS_ROOT_CREATE_FILE
510 * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE
511 * or QLA_DFS_ROOT_REMOVE_FILE
512 *
513 * Example for creating "TEST" sysfs file:
514 * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; }
515 * 2. QLA_DFS_SETUP_RD(TEST, scsi_qla_host_t);
516 * 3. In qla2x00_dfs_setup():
517 * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha);
518 * 4. In qla2x00_dfs_remove():
519 * QLA_DFS_REMOVE_FILE(ha, TEST);
520 */
521 #define QLA_DFS_SETUP_RD(_name, _ctx_struct) \
522 static int \
523 qla_dfs_##_name##_open(struct inode *inode, struct file *file) \
524 { \
525 _ctx_struct *__ctx = inode->i_private; \
526 \
527 return single_open(file, qla_dfs_##_name##_show, __ctx); \
528 } \
529 \
530 static const struct file_operations qla_dfs_##_name##_ops = { \
531 .open = qla_dfs_##_name##_open, \
532 .read = seq_read, \
533 .llseek = seq_lseek, \
534 .release = single_release, \
535 };
536
537 #define QLA_DFS_SETUP_RW(_name, _ctx_struct) \
538 static int \
539 qla_dfs_##_name##_open(struct inode *inode, struct file *file) \
540 { \
541 _ctx_struct *__ctx = inode->i_private; \
542 \
543 return single_open(file, qla_dfs_##_name##_show, __ctx); \
544 } \
545 \
546 static const struct file_operations qla_dfs_##_name##_ops = { \
547 .open = qla_dfs_##_name##_open, \
548 .read = seq_read, \
549 .llseek = seq_lseek, \
550 .release = single_release, \
551 .write = qla_dfs_##_name##_write, \
552 };
553
554 #define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \
555 do { \
556 if (!qla_dfs_##_name) \
557 qla_dfs_##_name = debugfs_create_file(#_name, \
558 _perm, qla2x00_dfs_root, _ctx, \
559 &qla_dfs_##_name##_ops); \
560 } while (0)
561
562 #define QLA_DFS_ROOT_REMOVE_FILE(_name) \
563 do { \
564 if (qla_dfs_##_name) { \
565 debugfs_remove(qla_dfs_##_name); \
566 qla_dfs_##_name = NULL; \
567 } \
568 } while (0)
569
570 #define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \
571 do { \
572 (_struct)->dfs_##_name = debugfs_create_file(#_name, \
573 _perm, _parent, _ctx, \
574 &qla_dfs_##_name##_ops) \
575 } while (0)
576
577 #define QLA_DFS_REMOVE_FILE(_struct, _name) \
578 do { \
579 if ((_struct)->dfs_##_name) { \
580 debugfs_remove((_struct)->dfs_##_name); \
581 (_struct)->dfs_##_name = NULL; \
582 } \
583 } while (0)
584
585 static int
qla_dfs_naqp_open(struct inode * inode,struct file * file)586 qla_dfs_naqp_open(struct inode *inode, struct file *file)
587 {
588 struct scsi_qla_host *vha = inode->i_private;
589
590 return single_open(file, qla_dfs_naqp_show, vha);
591 }
592
593 static ssize_t
qla_dfs_naqp_write(struct file * file,const char __user * buffer,size_t count,loff_t * pos)594 qla_dfs_naqp_write(struct file *file, const char __user *buffer,
595 size_t count, loff_t *pos)
596 {
597 struct seq_file *s = file->private_data;
598 struct scsi_qla_host *vha = s->private;
599 struct qla_hw_data *ha = vha->hw;
600 char *buf;
601 int rc = 0;
602 unsigned long num_act_qp;
603
604 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) {
605 pr_err("host%ld: this adapter does not support Multi Q.",
606 vha->host_no);
607 return -EINVAL;
608 }
609
610 if (!vha->flags.qpairs_available) {
611 pr_err("host%ld: Driver is not setup with Multi Q.",
612 vha->host_no);
613 return -EINVAL;
614 }
615 buf = memdup_user_nul(buffer, count);
616 if (IS_ERR(buf)) {
617 pr_err("host%ld: fail to copy user buffer.",
618 vha->host_no);
619 return PTR_ERR(buf);
620 }
621
622 num_act_qp = simple_strtoul(buf, NULL, 0);
623
624 if (num_act_qp >= vha->hw->max_qpairs) {
625 pr_err("User set invalid number of qpairs %lu. Max = %d",
626 num_act_qp, vha->hw->max_qpairs);
627 rc = -EINVAL;
628 goto out_free;
629 }
630
631 if (num_act_qp != ha->tgt.num_act_qpairs) {
632 ha->tgt.num_act_qpairs = num_act_qp;
633 qlt_clr_qp_table(vha);
634 }
635 rc = count;
636 out_free:
637 kfree(buf);
638 return rc;
639 }
640
641 static const struct file_operations dfs_naqp_ops = {
642 .open = qla_dfs_naqp_open,
643 .read = seq_read,
644 .llseek = seq_lseek,
645 .release = single_release,
646 .write = qla_dfs_naqp_write,
647 };
648
649
650 int
qla2x00_dfs_setup(scsi_qla_host_t * vha)651 qla2x00_dfs_setup(scsi_qla_host_t *vha)
652 {
653 struct qla_hw_data *ha = vha->hw;
654
655 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
656 !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
657 goto out;
658 if (!ha->fce)
659 goto out;
660
661 if (qla2x00_dfs_root)
662 goto create_dir;
663
664 atomic_set(&qla2x00_dfs_root_count, 0);
665 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
666
667 create_dir:
668 if (ha->dfs_dir)
669 goto create_nodes;
670
671 mutex_init(&ha->fce_mutex);
672 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
673
674 atomic_inc(&qla2x00_dfs_root_count);
675
676 create_nodes:
677 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
678 S_IRUSR, ha->dfs_dir, vha, &qla_dfs_fw_resource_cnt_fops);
679
680 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
681 ha->dfs_dir, vha, &qla_dfs_tgt_counters_fops);
682
683 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
684 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_port_database_fops);
685
686 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
687 &dfs_fce_ops);
688
689 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
690 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_sess_fops);
691
692 if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) {
693 ha->tgt.dfs_naqp = debugfs_create_file("naqp",
694 0400, ha->dfs_dir, vha, &dfs_naqp_ops);
695 if (!ha->tgt.dfs_naqp) {
696 ql_log(ql_log_warn, vha, 0xd011,
697 "Unable to create debugFS naqp node.\n");
698 goto out;
699 }
700 }
701 vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir);
702 if (!vha->dfs_rport_root) {
703 ql_log(ql_log_warn, vha, 0xd012,
704 "Unable to create debugFS rports node.\n");
705 goto out;
706 }
707 out:
708 return 0;
709 }
710
711 int
qla2x00_dfs_remove(scsi_qla_host_t * vha)712 qla2x00_dfs_remove(scsi_qla_host_t *vha)
713 {
714 struct qla_hw_data *ha = vha->hw;
715
716 if (ha->tgt.dfs_naqp) {
717 debugfs_remove(ha->tgt.dfs_naqp);
718 ha->tgt.dfs_naqp = NULL;
719 }
720
721 if (ha->tgt.dfs_tgt_sess) {
722 debugfs_remove(ha->tgt.dfs_tgt_sess);
723 ha->tgt.dfs_tgt_sess = NULL;
724 }
725
726 if (ha->tgt.dfs_tgt_port_database) {
727 debugfs_remove(ha->tgt.dfs_tgt_port_database);
728 ha->tgt.dfs_tgt_port_database = NULL;
729 }
730
731 if (ha->dfs_fw_resource_cnt) {
732 debugfs_remove(ha->dfs_fw_resource_cnt);
733 ha->dfs_fw_resource_cnt = NULL;
734 }
735
736 if (ha->dfs_tgt_counters) {
737 debugfs_remove(ha->dfs_tgt_counters);
738 ha->dfs_tgt_counters = NULL;
739 }
740
741 if (ha->dfs_fce) {
742 debugfs_remove(ha->dfs_fce);
743 ha->dfs_fce = NULL;
744 }
745
746 if (vha->dfs_rport_root) {
747 debugfs_remove_recursive(vha->dfs_rport_root);
748 vha->dfs_rport_root = NULL;
749 }
750
751 if (ha->dfs_dir) {
752 debugfs_remove(ha->dfs_dir);
753 ha->dfs_dir = NULL;
754 atomic_dec(&qla2x00_dfs_root_count);
755 }
756
757 if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
758 qla2x00_dfs_root) {
759 debugfs_remove(qla2x00_dfs_root);
760 qla2x00_dfs_root = NULL;
761 }
762
763 return 0;
764 }
765