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 qla_tgt_sess *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_printf(s, "Port ID Port Name Handle\n"); 27 28 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 29 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { 30 seq_printf(s, "%02x:%02x:%02x %8phC %d\n", 31 sess->s_id.b.domain,sess->s_id.b.area, 32 sess->s_id.b.al_pa, sess->port_name, 33 sess->loop_id); 34 } 35 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 36 } 37 38 return 0; 39 } 40 41 static int 42 qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file) 43 { 44 scsi_qla_host_t *vha = inode->i_private; 45 return single_open(file, qla2x00_dfs_tgt_sess_show, vha); 46 } 47 48 49 static const struct file_operations dfs_tgt_sess_ops = { 50 .open = qla2x00_dfs_tgt_sess_open, 51 .read = seq_read, 52 .llseek = seq_lseek, 53 .release = single_release, 54 }; 55 56 static int 57 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused) 58 { 59 struct scsi_qla_host *vha = s->private; 60 struct qla_hw_data *ha = vha->hw; 61 62 seq_puts(s, "FW Resource count\n\n"); 63 seq_printf(s, "Original TGT exchg count[%d]\n", 64 ha->orig_fw_tgt_xcb_count); 65 seq_printf(s, "current TGT exchg count[%d]\n", 66 ha->cur_fw_tgt_xcb_count); 67 seq_printf(s, "original Initiator Exchange count[%d]\n", 68 ha->orig_fw_xcb_count); 69 seq_printf(s, "Current Initiator Exchange count[%d]\n", 70 ha->cur_fw_xcb_count); 71 seq_printf(s, "Original IOCB count[%d]\n", ha->orig_fw_iocb_count); 72 seq_printf(s, "Current IOCB count[%d]\n", ha->cur_fw_iocb_count); 73 seq_printf(s, "MAX VP count[%d]\n", ha->max_npiv_vports); 74 seq_printf(s, "MAX FCF count[%d]\n", ha->fw_max_fcf_count); 75 76 return 0; 77 } 78 79 static int 80 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file) 81 { 82 struct scsi_qla_host *vha = inode->i_private; 83 return single_open(file, qla_dfs_fw_resource_cnt_show, vha); 84 } 85 86 static const struct file_operations dfs_fw_resource_cnt_ops = { 87 .open = qla_dfs_fw_resource_cnt_open, 88 .read = seq_read, 89 .llseek = seq_lseek, 90 .release = single_release, 91 }; 92 93 static int 94 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 95 { 96 struct scsi_qla_host *vha = s->private; 97 98 seq_puts(s, "Target Counters\n"); 99 seq_printf(s, "qla_core_sbt_cmd = %lld\n", 100 vha->tgt_counters.qla_core_sbt_cmd); 101 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n", 102 vha->tgt_counters.qla_core_ret_sta_ctio); 103 seq_printf(s, "qla_core_ret_ctio = %lld\n", 104 vha->tgt_counters.qla_core_ret_ctio); 105 seq_printf(s, "core_qla_que_buf = %lld\n", 106 vha->tgt_counters.core_qla_que_buf); 107 seq_printf(s, "core_qla_snd_status = %lld\n", 108 vha->tgt_counters.core_qla_snd_status); 109 seq_printf(s, "core_qla_free_cmd = %lld\n", 110 vha->tgt_counters.core_qla_free_cmd); 111 seq_printf(s, "num alloc iocb failed = %lld\n", 112 vha->tgt_counters.num_alloc_iocb_failed); 113 seq_printf(s, "num term exchange sent = %lld\n", 114 vha->tgt_counters.num_term_xchg_sent); 115 seq_printf(s, "num Q full sent = %lld\n", 116 vha->tgt_counters.num_q_full_sent); 117 118 return 0; 119 } 120 121 static int 122 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file) 123 { 124 struct scsi_qla_host *vha = inode->i_private; 125 return single_open(file, qla_dfs_tgt_counters_show, vha); 126 } 127 128 static const struct file_operations dfs_tgt_counters_ops = { 129 .open = qla_dfs_tgt_counters_open, 130 .read = seq_read, 131 .llseek = seq_lseek, 132 .release = single_release, 133 }; 134 135 static int 136 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 137 { 138 scsi_qla_host_t *vha = s->private; 139 uint32_t cnt; 140 uint32_t *fce; 141 uint64_t fce_start; 142 struct qla_hw_data *ha = vha->hw; 143 144 mutex_lock(&ha->fce_mutex); 145 146 seq_puts(s, "FCE Trace Buffer\n"); 147 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 148 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 149 seq_puts(s, "FCE Enable Registers\n"); 150 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 151 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 152 ha->fce_mb[5], ha->fce_mb[6]); 153 154 fce = (uint32_t *) ha->fce; 155 fce_start = (unsigned long long) ha->fce_dma; 156 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 157 if (cnt % 8 == 0) 158 seq_printf(s, "\n%llx: ", 159 (unsigned long long)((cnt * 4) + fce_start)); 160 else 161 seq_putc(s, ' '); 162 seq_printf(s, "%08x", *fce++); 163 } 164 165 seq_puts(s, "\nEnd\n"); 166 167 mutex_unlock(&ha->fce_mutex); 168 169 return 0; 170 } 171 172 static int 173 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 174 { 175 scsi_qla_host_t *vha = inode->i_private; 176 struct qla_hw_data *ha = vha->hw; 177 int rval; 178 179 if (!ha->flags.fce_enabled) 180 goto out; 181 182 mutex_lock(&ha->fce_mutex); 183 184 /* Pause tracing to flush FCE buffers. */ 185 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 186 if (rval) 187 ql_dbg(ql_dbg_user, vha, 0x705c, 188 "DebugFS: Unable to disable FCE (%d).\n", rval); 189 190 ha->flags.fce_enabled = 0; 191 192 mutex_unlock(&ha->fce_mutex); 193 out: 194 return single_open(file, qla2x00_dfs_fce_show, vha); 195 } 196 197 static int 198 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 199 { 200 scsi_qla_host_t *vha = inode->i_private; 201 struct qla_hw_data *ha = vha->hw; 202 int rval; 203 204 if (ha->flags.fce_enabled) 205 goto out; 206 207 mutex_lock(&ha->fce_mutex); 208 209 /* Re-enable FCE tracing. */ 210 ha->flags.fce_enabled = 1; 211 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 212 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 213 ha->fce_mb, &ha->fce_bufs); 214 if (rval) { 215 ql_dbg(ql_dbg_user, vha, 0x700d, 216 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 217 ha->flags.fce_enabled = 0; 218 } 219 220 mutex_unlock(&ha->fce_mutex); 221 out: 222 return single_release(inode, file); 223 } 224 225 static const struct file_operations dfs_fce_ops = { 226 .open = qla2x00_dfs_fce_open, 227 .read = seq_read, 228 .llseek = seq_lseek, 229 .release = qla2x00_dfs_fce_release, 230 }; 231 232 int 233 qla2x00_dfs_setup(scsi_qla_host_t *vha) 234 { 235 struct qla_hw_data *ha = vha->hw; 236 237 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 238 !IS_QLA27XX(ha)) 239 goto out; 240 if (!ha->fce) 241 goto out; 242 243 if (qla2x00_dfs_root) 244 goto create_dir; 245 246 atomic_set(&qla2x00_dfs_root_count, 0); 247 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 248 if (!qla2x00_dfs_root) { 249 ql_log(ql_log_warn, vha, 0x00f7, 250 "Unable to create debugfs root directory.\n"); 251 goto out; 252 } 253 254 create_dir: 255 if (ha->dfs_dir) 256 goto create_nodes; 257 258 mutex_init(&ha->fce_mutex); 259 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 260 if (!ha->dfs_dir) { 261 ql_log(ql_log_warn, vha, 0x00f8, 262 "Unable to create debugfs ha directory.\n"); 263 goto out; 264 } 265 266 atomic_inc(&qla2x00_dfs_root_count); 267 268 create_nodes: 269 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 270 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops); 271 if (!ha->dfs_fw_resource_cnt) { 272 ql_log(ql_log_warn, vha, 0x00fd, 273 "Unable to create debugFS fw_resource_count node.\n"); 274 goto out; 275 } 276 277 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 278 ha->dfs_dir, vha, &dfs_tgt_counters_ops); 279 if (!ha->dfs_tgt_counters) { 280 ql_log(ql_log_warn, vha, 0xd301, 281 "Unable to create debugFS tgt_counters node.\n"); 282 goto out; 283 } 284 285 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 286 &dfs_fce_ops); 287 if (!ha->dfs_fce) { 288 ql_log(ql_log_warn, vha, 0x00f9, 289 "Unable to create debugfs fce node.\n"); 290 goto out; 291 } 292 293 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 294 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); 295 if (!ha->tgt.dfs_tgt_sess) { 296 ql_log(ql_log_warn, vha, 0xffff, 297 "Unable to create debugFS tgt_sess node.\n"); 298 goto out; 299 } 300 301 out: 302 return 0; 303 } 304 305 int 306 qla2x00_dfs_remove(scsi_qla_host_t *vha) 307 { 308 struct qla_hw_data *ha = vha->hw; 309 310 if (ha->tgt.dfs_tgt_sess) { 311 debugfs_remove(ha->tgt.dfs_tgt_sess); 312 ha->tgt.dfs_tgt_sess = NULL; 313 } 314 315 if (ha->dfs_fw_resource_cnt) { 316 debugfs_remove(ha->dfs_fw_resource_cnt); 317 ha->dfs_fw_resource_cnt = NULL; 318 } 319 320 if (ha->dfs_tgt_counters) { 321 debugfs_remove(ha->dfs_tgt_counters); 322 ha->dfs_tgt_counters = NULL; 323 } 324 325 if (ha->dfs_fce) { 326 debugfs_remove(ha->dfs_fce); 327 ha->dfs_fce = NULL; 328 } 329 330 if (ha->dfs_dir) { 331 debugfs_remove(ha->dfs_dir); 332 ha->dfs_dir = NULL; 333 atomic_dec(&qla2x00_dfs_root_count); 334 } 335 336 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 337 qla2x00_dfs_root) { 338 debugfs_remove(qla2x00_dfs_root); 339 qla2x00_dfs_root = NULL; 340 } 341 342 return 0; 343 } 344