1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2014 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 9 #include <linux/debugfs.h> 10 #include <linux/seq_file.h> 11 12 static struct dentry *qla2x00_dfs_root; 13 static atomic_t qla2x00_dfs_root_count; 14 15 static int 16 qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused) 17 { 18 scsi_qla_host_t *vha = s->private; 19 struct qla_hw_data *ha = vha->hw; 20 unsigned long flags; 21 struct fc_port *sess = NULL; 22 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 23 24 seq_printf(s, "%s\n", vha->host_str); 25 if (tgt) { 26 seq_puts(s, "Port ID Port Name Handle\n"); 27 28 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 29 list_for_each_entry(sess, &vha->vp_fcports, list) 30 seq_printf(s, "%02x:%02x:%02x %8phC %d\n", 31 sess->d_id.b.domain, sess->d_id.b.area, 32 sess->d_id.b.al_pa, sess->port_name, 33 sess->loop_id); 34 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 35 } 36 37 return 0; 38 } 39 40 static int 41 qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file) 42 { 43 scsi_qla_host_t *vha = inode->i_private; 44 return single_open(file, qla2x00_dfs_tgt_sess_show, vha); 45 } 46 47 static const struct file_operations dfs_tgt_sess_ops = { 48 .open = qla2x00_dfs_tgt_sess_open, 49 .read = seq_read, 50 .llseek = seq_lseek, 51 .release = single_release, 52 }; 53 54 static int 55 qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused) 56 { 57 scsi_qla_host_t *vha = s->private; 58 struct qla_hw_data *ha = vha->hw; 59 struct gid_list_info *gid_list; 60 dma_addr_t gid_list_dma; 61 fc_port_t fc_port; 62 char *id_iter; 63 int rc, i; 64 uint16_t entries, loop_id; 65 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 66 67 seq_printf(s, "%s\n", vha->host_str); 68 if (tgt) { 69 gid_list = dma_alloc_coherent(&ha->pdev->dev, 70 qla2x00_gid_list_size(ha), 71 &gid_list_dma, GFP_KERNEL); 72 if (!gid_list) { 73 ql_dbg(ql_dbg_user, vha, 0x705c, 74 "DMA allocation failed for %u\n", 75 qla2x00_gid_list_size(ha)); 76 return 0; 77 } 78 79 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, 80 &entries); 81 if (rc != QLA_SUCCESS) 82 goto out_free_id_list; 83 84 id_iter = (char *)gid_list; 85 86 seq_puts(s, "Port Name Port ID Loop ID\n"); 87 88 for (i = 0; i < entries; i++) { 89 struct gid_list_info *gid = 90 (struct gid_list_info *)id_iter; 91 loop_id = le16_to_cpu(gid->loop_id); 92 memset(&fc_port, 0, sizeof(fc_port_t)); 93 94 fc_port.loop_id = loop_id; 95 96 rc = qla24xx_gpdb_wait(vha, &fc_port, 0); 97 seq_printf(s, "%8phC %02x%02x%02x %d\n", 98 fc_port.port_name, fc_port.d_id.b.domain, 99 fc_port.d_id.b.area, fc_port.d_id.b.al_pa, 100 fc_port.loop_id); 101 id_iter += ha->gid_list_info_size; 102 } 103 out_free_id_list: 104 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 105 gid_list, gid_list_dma); 106 } 107 108 return 0; 109 } 110 111 static int 112 qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file) 113 { 114 scsi_qla_host_t *vha = inode->i_private; 115 116 return single_open(file, qla2x00_dfs_tgt_port_database_show, vha); 117 } 118 119 static const struct file_operations dfs_tgt_port_database_ops = { 120 .open = qla2x00_dfs_tgt_port_database_open, 121 .read = seq_read, 122 .llseek = seq_lseek, 123 .release = single_release, 124 }; 125 126 static int 127 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused) 128 { 129 struct scsi_qla_host *vha = s->private; 130 struct qla_hw_data *ha = vha->hw; 131 132 seq_puts(s, "FW Resource count\n\n"); 133 seq_printf(s, "Original TGT exchg count[%d]\n", 134 ha->orig_fw_tgt_xcb_count); 135 seq_printf(s, "current TGT exchg count[%d]\n", 136 ha->cur_fw_tgt_xcb_count); 137 seq_printf(s, "original Initiator Exchange count[%d]\n", 138 ha->orig_fw_xcb_count); 139 seq_printf(s, "Current Initiator Exchange count[%d]\n", 140 ha->cur_fw_xcb_count); 141 seq_printf(s, "Original IOCB count[%d]\n", ha->orig_fw_iocb_count); 142 seq_printf(s, "Current IOCB count[%d]\n", ha->cur_fw_iocb_count); 143 seq_printf(s, "MAX VP count[%d]\n", ha->max_npiv_vports); 144 seq_printf(s, "MAX FCF count[%d]\n", ha->fw_max_fcf_count); 145 146 return 0; 147 } 148 149 static int 150 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file) 151 { 152 struct scsi_qla_host *vha = inode->i_private; 153 return single_open(file, qla_dfs_fw_resource_cnt_show, vha); 154 } 155 156 static const struct file_operations dfs_fw_resource_cnt_ops = { 157 .open = qla_dfs_fw_resource_cnt_open, 158 .read = seq_read, 159 .llseek = seq_lseek, 160 .release = single_release, 161 }; 162 163 static int 164 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 165 { 166 struct scsi_qla_host *vha = s->private; 167 168 seq_puts(s, "Target Counters\n"); 169 seq_printf(s, "qla_core_sbt_cmd = %lld\n", 170 vha->tgt_counters.qla_core_sbt_cmd); 171 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n", 172 vha->tgt_counters.qla_core_ret_sta_ctio); 173 seq_printf(s, "qla_core_ret_ctio = %lld\n", 174 vha->tgt_counters.qla_core_ret_ctio); 175 seq_printf(s, "core_qla_que_buf = %lld\n", 176 vha->tgt_counters.core_qla_que_buf); 177 seq_printf(s, "core_qla_snd_status = %lld\n", 178 vha->tgt_counters.core_qla_snd_status); 179 seq_printf(s, "core_qla_free_cmd = %lld\n", 180 vha->tgt_counters.core_qla_free_cmd); 181 seq_printf(s, "num alloc iocb failed = %lld\n", 182 vha->tgt_counters.num_alloc_iocb_failed); 183 seq_printf(s, "num term exchange sent = %lld\n", 184 vha->tgt_counters.num_term_xchg_sent); 185 seq_printf(s, "num Q full sent = %lld\n", 186 vha->tgt_counters.num_q_full_sent); 187 188 /* DIF stats */ 189 seq_printf(s, "DIF Inp Bytes = %lld\n", 190 vha->qla_stats.qla_dif_stats.dif_input_bytes); 191 seq_printf(s, "DIF Outp Bytes = %lld\n", 192 vha->qla_stats.qla_dif_stats.dif_output_bytes); 193 seq_printf(s, "DIF Inp Req = %lld\n", 194 vha->qla_stats.qla_dif_stats.dif_input_requests); 195 seq_printf(s, "DIF Outp Req = %lld\n", 196 vha->qla_stats.qla_dif_stats.dif_output_requests); 197 seq_printf(s, "DIF Guard err = %d\n", 198 vha->qla_stats.qla_dif_stats.dif_guard_err); 199 seq_printf(s, "DIF Ref tag err = %d\n", 200 vha->qla_stats.qla_dif_stats.dif_ref_tag_err); 201 seq_printf(s, "DIF App tag err = %d\n", 202 vha->qla_stats.qla_dif_stats.dif_app_tag_err); 203 return 0; 204 } 205 206 static int 207 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file) 208 { 209 struct scsi_qla_host *vha = inode->i_private; 210 return single_open(file, qla_dfs_tgt_counters_show, vha); 211 } 212 213 static const struct file_operations dfs_tgt_counters_ops = { 214 .open = qla_dfs_tgt_counters_open, 215 .read = seq_read, 216 .llseek = seq_lseek, 217 .release = single_release, 218 }; 219 220 static int 221 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 222 { 223 scsi_qla_host_t *vha = s->private; 224 uint32_t cnt; 225 uint32_t *fce; 226 uint64_t fce_start; 227 struct qla_hw_data *ha = vha->hw; 228 229 mutex_lock(&ha->fce_mutex); 230 231 seq_puts(s, "FCE Trace Buffer\n"); 232 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 233 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 234 seq_puts(s, "FCE Enable Registers\n"); 235 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 236 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 237 ha->fce_mb[5], ha->fce_mb[6]); 238 239 fce = (uint32_t *) ha->fce; 240 fce_start = (unsigned long long) ha->fce_dma; 241 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 242 if (cnt % 8 == 0) 243 seq_printf(s, "\n%llx: ", 244 (unsigned long long)((cnt * 4) + fce_start)); 245 else 246 seq_putc(s, ' '); 247 seq_printf(s, "%08x", *fce++); 248 } 249 250 seq_puts(s, "\nEnd\n"); 251 252 mutex_unlock(&ha->fce_mutex); 253 254 return 0; 255 } 256 257 static int 258 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 259 { 260 scsi_qla_host_t *vha = inode->i_private; 261 struct qla_hw_data *ha = vha->hw; 262 int rval; 263 264 if (!ha->flags.fce_enabled) 265 goto out; 266 267 mutex_lock(&ha->fce_mutex); 268 269 /* Pause tracing to flush FCE buffers. */ 270 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 271 if (rval) 272 ql_dbg(ql_dbg_user, vha, 0x705c, 273 "DebugFS: Unable to disable FCE (%d).\n", rval); 274 275 ha->flags.fce_enabled = 0; 276 277 mutex_unlock(&ha->fce_mutex); 278 out: 279 return single_open(file, qla2x00_dfs_fce_show, vha); 280 } 281 282 static int 283 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 284 { 285 scsi_qla_host_t *vha = inode->i_private; 286 struct qla_hw_data *ha = vha->hw; 287 int rval; 288 289 if (ha->flags.fce_enabled) 290 goto out; 291 292 mutex_lock(&ha->fce_mutex); 293 294 /* Re-enable FCE tracing. */ 295 ha->flags.fce_enabled = 1; 296 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 297 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 298 ha->fce_mb, &ha->fce_bufs); 299 if (rval) { 300 ql_dbg(ql_dbg_user, vha, 0x700d, 301 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 302 ha->flags.fce_enabled = 0; 303 } 304 305 mutex_unlock(&ha->fce_mutex); 306 out: 307 return single_release(inode, file); 308 } 309 310 static const struct file_operations dfs_fce_ops = { 311 .open = qla2x00_dfs_fce_open, 312 .read = seq_read, 313 .llseek = seq_lseek, 314 .release = qla2x00_dfs_fce_release, 315 }; 316 317 int 318 qla2x00_dfs_setup(scsi_qla_host_t *vha) 319 { 320 struct qla_hw_data *ha = vha->hw; 321 322 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 323 !IS_QLA27XX(ha)) 324 goto out; 325 if (!ha->fce) 326 goto out; 327 328 if (qla2x00_dfs_root) 329 goto create_dir; 330 331 atomic_set(&qla2x00_dfs_root_count, 0); 332 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 333 if (!qla2x00_dfs_root) { 334 ql_log(ql_log_warn, vha, 0x00f7, 335 "Unable to create debugfs root directory.\n"); 336 goto out; 337 } 338 339 create_dir: 340 if (ha->dfs_dir) 341 goto create_nodes; 342 343 mutex_init(&ha->fce_mutex); 344 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 345 if (!ha->dfs_dir) { 346 ql_log(ql_log_warn, vha, 0x00f8, 347 "Unable to create debugfs ha directory.\n"); 348 goto out; 349 } 350 351 atomic_inc(&qla2x00_dfs_root_count); 352 353 create_nodes: 354 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 355 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops); 356 if (!ha->dfs_fw_resource_cnt) { 357 ql_log(ql_log_warn, vha, 0x00fd, 358 "Unable to create debugFS fw_resource_count node.\n"); 359 goto out; 360 } 361 362 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 363 ha->dfs_dir, vha, &dfs_tgt_counters_ops); 364 if (!ha->dfs_tgt_counters) { 365 ql_log(ql_log_warn, vha, 0xd301, 366 "Unable to create debugFS tgt_counters node.\n"); 367 goto out; 368 } 369 370 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 371 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_port_database_ops); 372 if (!ha->tgt.dfs_tgt_port_database) { 373 ql_log(ql_log_warn, vha, 0xffff, 374 "Unable to create debugFS tgt_port_database node.\n"); 375 goto out; 376 } 377 378 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 379 &dfs_fce_ops); 380 if (!ha->dfs_fce) { 381 ql_log(ql_log_warn, vha, 0x00f9, 382 "Unable to create debugfs fce node.\n"); 383 goto out; 384 } 385 386 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 387 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); 388 if (!ha->tgt.dfs_tgt_sess) { 389 ql_log(ql_log_warn, vha, 0xffff, 390 "Unable to create debugFS tgt_sess node.\n"); 391 goto out; 392 } 393 394 out: 395 return 0; 396 } 397 398 int 399 qla2x00_dfs_remove(scsi_qla_host_t *vha) 400 { 401 struct qla_hw_data *ha = vha->hw; 402 403 if (ha->tgt.dfs_tgt_sess) { 404 debugfs_remove(ha->tgt.dfs_tgt_sess); 405 ha->tgt.dfs_tgt_sess = NULL; 406 } 407 408 if (ha->tgt.dfs_tgt_port_database) { 409 debugfs_remove(ha->tgt.dfs_tgt_port_database); 410 ha->tgt.dfs_tgt_port_database = NULL; 411 } 412 413 if (ha->dfs_fw_resource_cnt) { 414 debugfs_remove(ha->dfs_fw_resource_cnt); 415 ha->dfs_fw_resource_cnt = NULL; 416 } 417 418 if (ha->dfs_tgt_counters) { 419 debugfs_remove(ha->dfs_tgt_counters); 420 ha->dfs_tgt_counters = NULL; 421 } 422 423 if (ha->dfs_fce) { 424 debugfs_remove(ha->dfs_fce); 425 ha->dfs_fce = NULL; 426 } 427 428 if (ha->dfs_dir) { 429 debugfs_remove(ha->dfs_dir); 430 ha->dfs_dir = NULL; 431 atomic_dec(&qla2x00_dfs_root_count); 432 } 433 434 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 435 qla2x00_dfs_root) { 436 debugfs_remove(qla2x00_dfs_root); 437 qla2x00_dfs_root = NULL; 438 } 439 440 return 0; 441 } 442