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10#include "qedi.h"
11#include "qedi_dbg.h"
12
13#include <linux/uaccess.h>
14#include <linux/debugfs.h>
15#include <linux/module.h>
16
17int qedi_do_not_recover;
18static struct dentry *qedi_dbg_root;
19
20void
21qedi_dbg_host_init(struct qedi_dbg_ctx *qedi,
22 const struct qedi_debugfs_ops *dops,
23 const struct file_operations *fops)
24{
25 char host_dirname[32];
26 struct dentry *file_dentry = NULL;
27
28 sprintf(host_dirname, "host%u", qedi->host_no);
29 qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root);
30 if (!qedi->bdf_dentry)
31 return;
32
33 while (dops) {
34 if (!(dops->name))
35 break;
36
37 file_dentry = debugfs_create_file(dops->name, 0600,
38 qedi->bdf_dentry, qedi,
39 fops);
40 if (!file_dentry) {
41 QEDI_INFO(qedi, QEDI_LOG_DEBUGFS,
42 "Debugfs entry %s creation failed\n",
43 dops->name);
44 debugfs_remove_recursive(qedi->bdf_dentry);
45 return;
46 }
47 dops++;
48 fops++;
49 }
50}
51
52void
53qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)
54{
55 debugfs_remove_recursive(qedi->bdf_dentry);
56 qedi->bdf_dentry = NULL;
57}
58
59void
60qedi_dbg_init(char *drv_name)
61{
62 qedi_dbg_root = debugfs_create_dir(drv_name, NULL);
63 if (!qedi_dbg_root)
64 QEDI_INFO(NULL, QEDI_LOG_DEBUGFS, "Init of debugfs failed\n");
65}
66
67void
68qedi_dbg_exit(void)
69{
70 debugfs_remove_recursive(qedi_dbg_root);
71 qedi_dbg_root = NULL;
72}
73
74static ssize_t
75qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg)
76{
77 if (!qedi_do_not_recover)
78 qedi_do_not_recover = 1;
79
80 QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
81 qedi_do_not_recover);
82 return 0;
83}
84
85static ssize_t
86qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg)
87{
88 if (qedi_do_not_recover)
89 qedi_do_not_recover = 0;
90
91 QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
92 qedi_do_not_recover);
93 return 0;
94}
95
96static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = {
97 { "enable", qedi_dbg_do_not_recover_enable },
98 { "disable", qedi_dbg_do_not_recover_disable },
99 { NULL, NULL }
100};
101
102const struct qedi_debugfs_ops qedi_debugfs_ops[] = {
103 { "gbl_ctx", NULL },
104 { "do_not_recover", qedi_dbg_do_not_recover_ops},
105 { "io_trace", NULL },
106 { NULL, NULL }
107};
108
109static ssize_t
110qedi_dbg_do_not_recover_cmd_write(struct file *filp, const char __user *buffer,
111 size_t count, loff_t *ppos)
112{
113 size_t cnt = 0;
114 struct qedi_dbg_ctx *qedi_dbg =
115 (struct qedi_dbg_ctx *)filp->private_data;
116 struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops;
117
118 if (*ppos)
119 return 0;
120
121 while (lof) {
122 if (!(lof->oper_str))
123 break;
124
125 if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) {
126 cnt = lof->oper_func(qedi_dbg);
127 break;
128 }
129
130 lof++;
131 }
132 return (count - cnt);
133}
134
135static ssize_t
136qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer,
137 size_t count, loff_t *ppos)
138{
139 size_t cnt = 0;
140
141 if (*ppos)
142 return 0;
143
144 cnt = sprintf(buffer, "do_not_recover=%d\n", qedi_do_not_recover);
145 cnt = min_t(int, count, cnt - *ppos);
146 *ppos += cnt;
147 return cnt;
148}
149
150static int
151qedi_gbl_ctx_show(struct seq_file *s, void *unused)
152{
153 struct qedi_fastpath *fp = NULL;
154 struct qed_sb_info *sb_info = NULL;
155 struct status_block_e4 *sb = NULL;
156 struct global_queue *que = NULL;
157 int id;
158 u16 prod_idx;
159 struct qedi_ctx *qedi = s->private;
160 unsigned long flags;
161
162 seq_puts(s, " DUMP CQ CONTEXT:\n");
163
164 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
165 spin_lock_irqsave(&qedi->hba_lock, flags);
166 seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);
167 fp = &qedi->fp_array[id];
168 sb_info = fp->sb_info;
169 sb = sb_info->sb_virt;
170 prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &
171 STATUS_BLOCK_E4_PROD_INDEX_MASK);
172 seq_printf(s, "SB PROD IDX: %d\n", prod_idx);
173 que = qedi->global_queues[fp->sb_id];
174 seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);
175 seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);
176 seq_puts(s, "=========== END ==================\n\n\n");
177 spin_unlock_irqrestore(&qedi->hba_lock, flags);
178 }
179 return 0;
180}
181
182static int
183qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file)
184{
185 struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
186 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
187 dbg_ctx);
188
189 return single_open(file, qedi_gbl_ctx_show, qedi);
190}
191
192static int
193qedi_io_trace_show(struct seq_file *s, void *unused)
194{
195 int id, idx = 0;
196 struct qedi_ctx *qedi = s->private;
197 struct qedi_io_log *io_log;
198 unsigned long flags;
199
200 seq_puts(s, " DUMP IO LOGS:\n");
201 spin_lock_irqsave(&qedi->io_trace_lock, flags);
202 idx = qedi->io_trace_idx;
203 for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {
204 io_log = &qedi->io_trace_buf[idx];
205 seq_printf(s, "iodir-%d:", io_log->direction);
206 seq_printf(s, "tid-0x%x:", io_log->task_id);
207 seq_printf(s, "cid-0x%x:", io_log->cid);
208 seq_printf(s, "lun-%d:", io_log->lun);
209 seq_printf(s, "op-0x%02x:", io_log->op);
210 seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
211 io_log->lba[1], io_log->lba[2], io_log->lba[3]);
212 seq_printf(s, "buflen-%d:", io_log->bufflen);
213 seq_printf(s, "sgcnt-%d:", io_log->sg_count);
214 seq_printf(s, "res-0x%08x:", io_log->result);
215 seq_printf(s, "jif-%lu:", io_log->jiffies);
216 seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);
217 seq_printf(s, "req_cpu-%d:", io_log->req_cpu);
218 seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);
219 seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);
220
221 idx++;
222 if (idx == QEDI_IO_TRACE_SIZE)
223 idx = 0;
224 }
225 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
226 return 0;
227}
228
229static int
230qedi_dbg_io_trace_open(struct inode *inode, struct file *file)
231{
232 struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
233 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
234 dbg_ctx);
235
236 return single_open(file, qedi_io_trace_show, qedi);
237}
238
239const struct file_operations qedi_dbg_fops[] = {
240 qedi_dbg_fileops_seq(qedi, gbl_ctx),
241 qedi_dbg_fileops(qedi, do_not_recover),
242 qedi_dbg_fileops_seq(qedi, io_trace),
243 { },
244};
245
