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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * QLogic Fibre Channel HBA Driver4 * Copyright (c) 2003-2014 QLogic Corporation5 */6#include "qla_def.h"7 8#include <linux/debugfs.h>9#include <linux/seq_file.h>10 11static struct dentry *qla2x00_dfs_root;12static atomic_t qla2x00_dfs_root_count;13 14#define QLA_DFS_RPORT_DEVLOSS_TMO 115 16static int17qla_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 32static int33qla_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) \53static 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} \58static 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} \63DEFINE_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) \74static 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} \80DEFINE_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 90DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo);91 92DEFINE_QLA_DFS_RPORT_FIELD(disc_state);93DEFINE_QLA_DFS_RPORT_FIELD(scan_state);94DEFINE_QLA_DFS_RPORT_FIELD(fw_login_state);95DEFINE_QLA_DFS_RPORT_FIELD(login_pause);96DEFINE_QLA_DFS_RPORT_FIELD(flags);97DEFINE_QLA_DFS_RPORT_FIELD(nvme_flag);98DEFINE_QLA_DFS_RPORT_FIELD(last_rscn_gen);99DEFINE_QLA_DFS_RPORT_FIELD(rscn_gen);100DEFINE_QLA_DFS_RPORT_FIELD(login_gen);101DEFINE_QLA_DFS_RPORT_FIELD(loop_id);102DEFINE_QLA_DFS_RPORT_FIELD_GET(port_id, fp->d_id.b24);103DEFINE_QLA_DFS_RPORT_FIELD_GET(sess_kref, kref_read(&fp->sess_kref));104 105void106qla2x00_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 (IS_ERR(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 139void140qla2x00_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 148static int149qla2x00_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 173DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_sess);174 175static int176qla2x00_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 }222out_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 229DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_port_database);230 231static int232qla_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, exch_used;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 exch_used = ha->base_qpair->fwres.exch_used;267 for (i = 0; i < ha->max_qpairs; i++) {268 if (ha->queue_pair_map[i]) {269 iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used;270 exch_used += ha->queue_pair_map[i]->fwres.exch_used;271 }272 }273 274 seq_printf(s, "Driver: estimate iocb used [%d] high water limit [%d]\n",275 iocbs_used, ha->base_qpair->fwres.iocbs_limit);276 277 seq_printf(s, "estimate exchange used[%d] high water limit [%d]\n",278 exch_used, ha->base_qpair->fwres.exch_limit);279 280 if (ql2xenforce_iocb_limit == 2) {281 iocbs_used = atomic_read(&ha->fwres.iocb_used);282 exch_used = atomic_read(&ha->fwres.exch_used);283 seq_printf(s, " estimate iocb2 used [%d] high water limit [%d]\n",284 iocbs_used, ha->fwres.iocb_limit);285 286 seq_printf(s, " estimate exchange2 used[%d] high water limit [%d] \n",287 exch_used, ha->fwres.exch_limit);288 }289 }290 291 return 0;292}293 294DEFINE_SHOW_ATTRIBUTE(qla_dfs_fw_resource_cnt);295 296static int297qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)298{299 struct scsi_qla_host *vha = s->private;300 struct qla_qpair *qpair = vha->hw->base_qpair;301 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,302 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,303 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;304 u16 i;305 fc_port_t *fcport = NULL;306 307 if (qla2x00_chip_is_down(vha))308 return 0;309 310 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;311 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;312 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;313 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;314 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;315 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;316 num_q_full_sent = qpair->tgt_counters.num_q_full_sent;317 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;318 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;319 320 for (i = 0; i < vha->hw->max_qpairs; i++) {321 qpair = vha->hw->queue_pair_map[i];322 if (!qpair)323 continue;324 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;325 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;326 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;327 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;328 qla_core_ret_sta_ctio +=329 qpair->tgt_counters.qla_core_ret_sta_ctio;330 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd;331 num_q_full_sent += qpair->tgt_counters.num_q_full_sent;332 num_alloc_iocb_failed +=333 qpair->tgt_counters.num_alloc_iocb_failed;334 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;335 }336 337 seq_puts(s, "Target Counters\n");338 seq_printf(s, "qla_core_sbt_cmd = %lld\n",339 qla_core_sbt_cmd);340 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",341 qla_core_ret_sta_ctio);342 seq_printf(s, "qla_core_ret_ctio = %lld\n",343 qla_core_ret_ctio);344 seq_printf(s, "core_qla_que_buf = %lld\n",345 core_qla_que_buf);346 seq_printf(s, "core_qla_snd_status = %lld\n",347 core_qla_snd_status);348 seq_printf(s, "core_qla_free_cmd = %lld\n",349 core_qla_free_cmd);350 seq_printf(s, "num alloc iocb failed = %lld\n",351 num_alloc_iocb_failed);352 seq_printf(s, "num term exchange sent = %lld\n",353 num_term_xchg_sent);354 seq_printf(s, "num Q full sent = %lld\n",355 num_q_full_sent);356 357 /* DIF stats */358 seq_printf(s, "DIF Inp Bytes = %lld\n",359 vha->qla_stats.qla_dif_stats.dif_input_bytes);360 seq_printf(s, "DIF Outp Bytes = %lld\n",361 vha->qla_stats.qla_dif_stats.dif_output_bytes);362 seq_printf(s, "DIF Inp Req = %lld\n",363 vha->qla_stats.qla_dif_stats.dif_input_requests);364 seq_printf(s, "DIF Outp Req = %lld\n",365 vha->qla_stats.qla_dif_stats.dif_output_requests);366 seq_printf(s, "DIF Guard err = %d\n",367 vha->qla_stats.qla_dif_stats.dif_guard_err);368 seq_printf(s, "DIF Ref tag err = %d\n",369 vha->qla_stats.qla_dif_stats.dif_ref_tag_err);370 seq_printf(s, "DIF App tag err = %d\n",371 vha->qla_stats.qla_dif_stats.dif_app_tag_err);372 373 seq_puts(s, "\n");374 seq_puts(s, "Initiator Error Counters\n");375 seq_printf(s, "HW Error Count = %14lld\n",376 vha->hw_err_cnt);377 seq_printf(s, "Link Down Count = %14lld\n",378 vha->short_link_down_cnt);379 seq_printf(s, "Interface Err Count = %14lld\n",380 vha->interface_err_cnt);381 seq_printf(s, "Cmd Timeout Count = %14lld\n",382 vha->cmd_timeout_cnt);383 seq_printf(s, "Reset Count = %14lld\n",384 vha->reset_cmd_err_cnt);385 seq_puts(s, "\n");386 387 list_for_each_entry(fcport, &vha->vp_fcports, list) {388 if (!fcport->rport)389 continue;390 391 seq_printf(s, "Target Num = %7d Link Down Count = %14lld\n",392 fcport->rport->number, fcport->tgt_short_link_down_cnt);393 }394 seq_puts(s, "\n");395 396 return 0;397}398 399DEFINE_SHOW_ATTRIBUTE(qla_dfs_tgt_counters);400 401static int402qla2x00_dfs_fce_show(struct seq_file *s, void *unused)403{404 scsi_qla_host_t *vha = s->private;405 uint32_t cnt;406 uint32_t *fce;407 uint64_t fce_start;408 struct qla_hw_data *ha = vha->hw;409 410 mutex_lock(&ha->fce_mutex);411 412 seq_puts(s, "FCE Trace Buffer\n");413 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);414 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);415 seq_puts(s, "FCE Enable Registers\n");416 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",417 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],418 ha->fce_mb[5], ha->fce_mb[6]);419 420 fce = (uint32_t *) ha->fce;421 fce_start = (unsigned long long) ha->fce_dma;422 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {423 if (cnt % 8 == 0)424 seq_printf(s, "\n%llx: ",425 (unsigned long long)((cnt * 4) + fce_start));426 else427 seq_putc(s, ' ');428 seq_printf(s, "%08x", *fce++);429 }430 431 seq_puts(s, "\nEnd\n");432 433 mutex_unlock(&ha->fce_mutex);434 435 return 0;436}437 438static int439qla2x00_dfs_fce_open(struct inode *inode, struct file *file)440{441 scsi_qla_host_t *vha = inode->i_private;442 struct qla_hw_data *ha = vha->hw;443 int rval;444 445 if (!ha->flags.fce_enabled)446 goto out;447 448 mutex_lock(&ha->fce_mutex);449 450 /* Pause tracing to flush FCE buffers. */451 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);452 if (rval)453 ql_dbg(ql_dbg_user, vha, 0x705c,454 "DebugFS: Unable to disable FCE (%d).\n", rval);455 456 ha->flags.fce_enabled = 0;457 458 mutex_unlock(&ha->fce_mutex);459out:460 return single_open(file, qla2x00_dfs_fce_show, vha);461}462 463static int464qla2x00_dfs_fce_release(struct inode *inode, struct file *file)465{466 scsi_qla_host_t *vha = inode->i_private;467 struct qla_hw_data *ha = vha->hw;468 int rval;469 470 if (ha->flags.fce_enabled)471 goto out;472 473 mutex_lock(&ha->fce_mutex);474 475 /* Re-enable FCE tracing. */476 ha->flags.fce_enabled = 1;477 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));478 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,479 ha->fce_mb, &ha->fce_bufs);480 if (rval) {481 ql_dbg(ql_dbg_user, vha, 0x700d,482 "DebugFS: Unable to reinitialize FCE (%d).\n", rval);483 ha->flags.fce_enabled = 0;484 }485 486 mutex_unlock(&ha->fce_mutex);487out:488 return single_release(inode, file);489}490 491static const struct file_operations dfs_fce_ops = {492 .open = qla2x00_dfs_fce_open,493 .read = seq_read,494 .llseek = seq_lseek,495 .release = qla2x00_dfs_fce_release,496};497 498static int499qla_dfs_naqp_show(struct seq_file *s, void *unused)500{501 struct scsi_qla_host *vha = s->private;502 struct qla_hw_data *ha = vha->hw;503 504 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);505 return 0;506}507 508/*509 * Helper macros for setting up debugfs entries.510 * _name: The name of the debugfs entry511 * _ctx_struct: The context that was passed when creating the debugfs file512 *513 * QLA_DFS_SETUP_RD could be used when there is only a show function.514 * - show function take the name qla_dfs_<sysfs-name>_show515 *516 * QLA_DFS_SETUP_RW could be used when there are both show and write functions.517 * - show function take the name qla_dfs_<sysfs-name>_show518 * - write function take the name qla_dfs_<sysfs-name>_write519 *520 * To have a new debugfs entry, do:521 * 1. Create a "struct dentry *" in the appropriate structure in the format522 * dfs_<sysfs-name>523 * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW524 * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE525 * or QLA_DFS_ROOT_CREATE_FILE526 * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE527 * or QLA_DFS_ROOT_REMOVE_FILE528 *529 * Example for creating "TEST" sysfs file:530 * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; }531 * 2. QLA_DFS_SETUP_RD(TEST);532 * 3. In qla2x00_dfs_setup():533 * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha);534 * 4. In qla2x00_dfs_remove():535 * QLA_DFS_REMOVE_FILE(ha, TEST);536 */537#define QLA_DFS_SETUP_RD(_name) DEFINE_SHOW_ATTRIBUTE(qla_dfs_##_name)538 539#define QLA_DFS_SETUP_RW(_name) DEFINE_SHOW_STORE_ATTRIBUTE(qla_dfs_##_name)540 541#define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \542 do { \543 if (!qla_dfs_##_name) \544 qla_dfs_##_name = debugfs_create_file(#_name, \545 _perm, qla2x00_dfs_root, _ctx, \546 &qla_dfs_##_name##_fops); \547 } while (0)548 549#define QLA_DFS_ROOT_REMOVE_FILE(_name) \550 do { \551 if (qla_dfs_##_name) { \552 debugfs_remove(qla_dfs_##_name); \553 qla_dfs_##_name = NULL; \554 } \555 } while (0)556 557#define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \558 do { \559 (_struct)->dfs_##_name = debugfs_create_file(#_name, \560 _perm, _parent, _ctx, \561 &qla_dfs_##_name##_fops) \562 } while (0)563 564#define QLA_DFS_REMOVE_FILE(_struct, _name) \565 do { \566 if ((_struct)->dfs_##_name) { \567 debugfs_remove((_struct)->dfs_##_name); \568 (_struct)->dfs_##_name = NULL; \569 } \570 } while (0)571 572static ssize_t573qla_dfs_naqp_write(struct file *file, const char __user *buffer,574 size_t count, loff_t *pos)575{576 struct seq_file *s = file->private_data;577 struct scsi_qla_host *vha = s->private;578 struct qla_hw_data *ha = vha->hw;579 char *buf;580 int rc = 0;581 unsigned long num_act_qp;582 583 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) {584 pr_err("host%ld: this adapter does not support Multi Q.",585 vha->host_no);586 return -EINVAL;587 }588 589 if (!vha->flags.qpairs_available) {590 pr_err("host%ld: Driver is not setup with Multi Q.",591 vha->host_no);592 return -EINVAL;593 }594 buf = memdup_user_nul(buffer, count);595 if (IS_ERR(buf)) {596 pr_err("host%ld: fail to copy user buffer.",597 vha->host_no);598 return PTR_ERR(buf);599 }600 601 num_act_qp = simple_strtoul(buf, NULL, 0);602 603 if (num_act_qp >= vha->hw->max_qpairs) {604 pr_err("User set invalid number of qpairs %lu. Max = %d",605 num_act_qp, vha->hw->max_qpairs);606 rc = -EINVAL;607 goto out_free;608 }609 610 if (num_act_qp != ha->tgt.num_act_qpairs) {611 ha->tgt.num_act_qpairs = num_act_qp;612 qlt_clr_qp_table(vha);613 }614 rc = count;615out_free:616 kfree(buf);617 return rc;618}619QLA_DFS_SETUP_RW(naqp);620 621int622qla2x00_dfs_setup(scsi_qla_host_t *vha)623{624 struct qla_hw_data *ha = vha->hw;625 626 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&627 !IS_QLA27XX(ha) && !IS_QLA28XX(ha))628 goto out;629 if (!ha->fce)630 goto out;631 632 if (qla2x00_dfs_root)633 goto create_dir;634 635 atomic_set(&qla2x00_dfs_root_count, 0);636 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);637 638create_dir:639 if (ha->dfs_dir)640 goto create_nodes;641 642 mutex_init(&ha->fce_mutex);643 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);644 645 atomic_inc(&qla2x00_dfs_root_count);646 647create_nodes:648 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",649 S_IRUSR, ha->dfs_dir, vha, &qla_dfs_fw_resource_cnt_fops);650 651 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,652 ha->dfs_dir, vha, &qla_dfs_tgt_counters_fops);653 654 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",655 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_port_database_fops);656 657 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,658 &dfs_fce_ops);659 660 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",661 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_sess_fops);662 663 if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) {664 ha->tgt.dfs_naqp = debugfs_create_file("naqp",665 0400, ha->dfs_dir, vha, &qla_dfs_naqp_fops);666 if (IS_ERR(ha->tgt.dfs_naqp)) {667 ql_log(ql_log_warn, vha, 0xd011,668 "Unable to create debugFS naqp node.\n");669 goto out;670 }671 }672 vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir);673 if (IS_ERR(vha->dfs_rport_root)) {674 ql_log(ql_log_warn, vha, 0xd012,675 "Unable to create debugFS rports node.\n");676 goto out;677 }678out:679 return 0;680}681 682int683qla2x00_dfs_remove(scsi_qla_host_t *vha)684{685 struct qla_hw_data *ha = vha->hw;686 687 if (ha->tgt.dfs_naqp) {688 debugfs_remove(ha->tgt.dfs_naqp);689 ha->tgt.dfs_naqp = NULL;690 }691 692 if (ha->tgt.dfs_tgt_sess) {693 debugfs_remove(ha->tgt.dfs_tgt_sess);694 ha->tgt.dfs_tgt_sess = NULL;695 }696 697 if (ha->tgt.dfs_tgt_port_database) {698 debugfs_remove(ha->tgt.dfs_tgt_port_database);699 ha->tgt.dfs_tgt_port_database = NULL;700 }701 702 if (ha->dfs_fw_resource_cnt) {703 debugfs_remove(ha->dfs_fw_resource_cnt);704 ha->dfs_fw_resource_cnt = NULL;705 }706 707 if (ha->dfs_tgt_counters) {708 debugfs_remove(ha->dfs_tgt_counters);709 ha->dfs_tgt_counters = NULL;710 }711 712 if (ha->dfs_fce) {713 debugfs_remove(ha->dfs_fce);714 ha->dfs_fce = NULL;715 }716 717 if (vha->dfs_rport_root) {718 debugfs_remove_recursive(vha->dfs_rport_root);719 vha->dfs_rport_root = NULL;720 }721 722 if (ha->dfs_dir) {723 debugfs_remove(ha->dfs_dir);724 ha->dfs_dir = NULL;725 atomic_dec(&qla2x00_dfs_root_count);726 }727 728 if (atomic_read(&qla2x00_dfs_root_count) == 0 &&729 qla2x00_dfs_root) {730 debugfs_remove(qla2x00_dfs_root);731 qla2x00_dfs_root = NULL;732 }733 734 return 0;735}736