2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
9 #include <linux/debugfs.h>
10 #include <linux/seq_file.h>
12 static struct dentry *qla2x00_dfs_root;
13 static atomic_t qla2x00_dfs_root_count;
16 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
18 struct scsi_qla_host *vha = s->private;
19 struct qla_hw_data *ha = vha->hw;
21 seq_puts(s, "FW Resource count\n\n");
22 seq_printf(s, "Original TGT exchg count[%d]\n",
23 ha->orig_fw_tgt_xcb_count);
24 seq_printf(s, "current TGT exchg count[%d]\n",
25 ha->cur_fw_tgt_xcb_count);
26 seq_printf(s, "original Initiator Exchange count[%d]\n",
27 ha->orig_fw_xcb_count);
28 seq_printf(s, "Current Initiator Exchange count[%d]\n",
29 ha->cur_fw_xcb_count);
30 seq_printf(s, "Original IOCB count[%d]\n", ha->orig_fw_iocb_count);
31 seq_printf(s, "Current IOCB count[%d]\n", ha->cur_fw_iocb_count);
32 seq_printf(s, "MAX VP count[%d]\n", ha->max_npiv_vports);
33 seq_printf(s, "MAX FCF count[%d]\n", ha->fw_max_fcf_count);
39 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file)
41 struct scsi_qla_host *vha = inode->i_private;
42 return single_open(file, qla_dfs_fw_resource_cnt_show, vha);
45 static const struct file_operations dfs_fw_resource_cnt_ops = {
46 .open = qla_dfs_fw_resource_cnt_open,
49 .release = single_release,
53 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
55 struct scsi_qla_host *vha = s->private;
57 seq_puts(s, "Target Counters\n");
58 seq_printf(s, "qla_core_sbt_cmd = %lld\n",
59 vha->tgt_counters.qla_core_sbt_cmd);
60 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
61 vha->tgt_counters.qla_core_ret_sta_ctio);
62 seq_printf(s, "qla_core_ret_ctio = %lld\n",
63 vha->tgt_counters.qla_core_ret_ctio);
64 seq_printf(s, "core_qla_que_buf = %lld\n",
65 vha->tgt_counters.core_qla_que_buf);
66 seq_printf(s, "core_qla_snd_status = %lld\n",
67 vha->tgt_counters.core_qla_snd_status);
68 seq_printf(s, "core_qla_free_cmd = %lld\n",
69 vha->tgt_counters.core_qla_free_cmd);
70 seq_printf(s, "num alloc iocb failed = %lld\n",
71 vha->tgt_counters.num_alloc_iocb_failed);
72 seq_printf(s, "num term exchange sent = %lld\n",
73 vha->tgt_counters.num_term_xchg_sent);
74 seq_printf(s, "num Q full sent = %lld\n",
75 vha->tgt_counters.num_q_full_sent);
81 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
83 struct scsi_qla_host *vha = inode->i_private;
84 return single_open(file, qla_dfs_tgt_counters_show, vha);
87 static const struct file_operations dfs_tgt_counters_ops = {
88 .open = qla_dfs_tgt_counters_open,
91 .release = single_release,
95 qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
97 scsi_qla_host_t *vha = s->private;
101 struct qla_hw_data *ha = vha->hw;
103 mutex_lock(&ha->fce_mutex);
105 seq_puts(s, "FCE Trace Buffer\n");
106 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
107 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
108 seq_puts(s, "FCE Enable Registers\n");
109 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
110 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
111 ha->fce_mb[5], ha->fce_mb[6]);
113 fce = (uint32_t *) ha->fce;
114 fce_start = (unsigned long long) ha->fce_dma;
115 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
117 seq_printf(s, "\n%llx: ",
118 (unsigned long long)((cnt * 4) + fce_start));
121 seq_printf(s, "%08x", *fce++);
124 seq_puts(s, "\nEnd\n");
126 mutex_unlock(&ha->fce_mutex);
132 qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
134 scsi_qla_host_t *vha = inode->i_private;
135 struct qla_hw_data *ha = vha->hw;
138 if (!ha->flags.fce_enabled)
141 mutex_lock(&ha->fce_mutex);
143 /* Pause tracing to flush FCE buffers. */
144 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
146 ql_dbg(ql_dbg_user, vha, 0x705c,
147 "DebugFS: Unable to disable FCE (%d).\n", rval);
149 ha->flags.fce_enabled = 0;
151 mutex_unlock(&ha->fce_mutex);
153 return single_open(file, qla2x00_dfs_fce_show, vha);
157 qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
159 scsi_qla_host_t *vha = inode->i_private;
160 struct qla_hw_data *ha = vha->hw;
163 if (ha->flags.fce_enabled)
166 mutex_lock(&ha->fce_mutex);
168 /* Re-enable FCE tracing. */
169 ha->flags.fce_enabled = 1;
170 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
171 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
172 ha->fce_mb, &ha->fce_bufs);
174 ql_dbg(ql_dbg_user, vha, 0x700d,
175 "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
176 ha->flags.fce_enabled = 0;
179 mutex_unlock(&ha->fce_mutex);
181 return single_release(inode, file);
184 static const struct file_operations dfs_fce_ops = {
185 .open = qla2x00_dfs_fce_open,
188 .release = qla2x00_dfs_fce_release,
192 qla2x00_dfs_setup(scsi_qla_host_t *vha)
194 struct qla_hw_data *ha = vha->hw;
196 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
202 if (qla2x00_dfs_root)
205 atomic_set(&qla2x00_dfs_root_count, 0);
206 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
207 if (!qla2x00_dfs_root) {
208 ql_log(ql_log_warn, vha, 0x00f7,
209 "Unable to create debugfs root directory.\n");
217 mutex_init(&ha->fce_mutex);
218 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
220 ql_log(ql_log_warn, vha, 0x00f8,
221 "Unable to create debugfs ha directory.\n");
225 atomic_inc(&qla2x00_dfs_root_count);
228 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
229 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);
230 if (!ha->dfs_fw_resource_cnt) {
231 ql_log(ql_log_warn, vha, 0x00fd,
232 "Unable to create debugFS fw_resource_count node.\n");
236 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
237 ha->dfs_dir, vha, &dfs_tgt_counters_ops);
238 if (!ha->dfs_tgt_counters) {
239 ql_log(ql_log_warn, vha, 0xd301,
240 "Unable to create debugFS tgt_counters node.\n");
244 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
247 ql_log(ql_log_warn, vha, 0x00f9,
248 "Unable to create debugfs fce node.\n");
256 qla2x00_dfs_remove(scsi_qla_host_t *vha)
258 struct qla_hw_data *ha = vha->hw;
260 if (ha->dfs_fw_resource_cnt) {
261 debugfs_remove(ha->dfs_fw_resource_cnt);
262 ha->dfs_fw_resource_cnt = NULL;
265 if (ha->dfs_tgt_counters) {
266 debugfs_remove(ha->dfs_tgt_counters);
267 ha->dfs_tgt_counters = NULL;
271 debugfs_remove(ha->dfs_fce);
276 debugfs_remove(ha->dfs_dir);
278 atomic_dec(&qla2x00_dfs_root_count);
281 if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
283 debugfs_remove(qla2x00_dfs_root);
284 qla2x00_dfs_root = NULL;