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21#include "fm10k.h"
22
23#include <linux/debugfs.h>
24#include <linux/seq_file.h>
25
26static struct dentry *dbg_root;
27
28
29
30static void *fm10k_dbg_desc_seq_start(struct seq_file *s, loff_t *pos)
31{
32 struct fm10k_ring *ring = s->private;
33
34 return (*pos < ring->count) ? pos : NULL;
35}
36
37static void *fm10k_dbg_desc_seq_next(struct seq_file *s,
38 void __always_unused *v,
39 loff_t *pos)
40{
41 struct fm10k_ring *ring = s->private;
42
43 return (++(*pos) < ring->count) ? pos : NULL;
44}
45
46static void fm10k_dbg_desc_seq_stop(struct seq_file __always_unused *s,
47 void __always_unused *v)
48{
49
50}
51
52static void fm10k_dbg_desc_break(struct seq_file *s, int i)
53{
54 while (i--)
55 seq_puts(s, "-");
56
57 seq_puts(s, "\n");
58}
59
60static int fm10k_dbg_tx_desc_seq_show(struct seq_file *s, void *v)
61{
62 struct fm10k_ring *ring = s->private;
63 int i = *(loff_t *)v;
64 static const char tx_desc_hdr[] =
65 "DES BUFFER_ADDRESS LENGTH VLAN MSS HDRLEN FLAGS\n";
66
67
68 if (!i) {
69 seq_printf(s, tx_desc_hdr);
70 fm10k_dbg_desc_break(s, sizeof(tx_desc_hdr) - 1);
71 }
72
73
74 if (!ring->desc) {
75 seq_printf(s, "%03X Descriptor ring not allocated.\n", i);
76 } else {
77 struct fm10k_tx_desc *txd = FM10K_TX_DESC(ring, i);
78
79 seq_printf(s, "%03X %#018llx %#06x %#06x %#06x %#06x %#04x\n",
80 i, txd->buffer_addr, txd->buflen, txd->vlan,
81 txd->mss, txd->hdrlen, txd->flags);
82 }
83
84 return 0;
85}
86
87static int fm10k_dbg_rx_desc_seq_show(struct seq_file *s, void *v)
88{
89 struct fm10k_ring *ring = s->private;
90 int i = *(loff_t *)v;
91 static const char rx_desc_hdr[] =
92 "DES DATA RSS STATERR LENGTH VLAN DGLORT SGLORT TIMESTAMP\n";
93
94
95 if (!i) {
96 seq_printf(s, rx_desc_hdr);
97 fm10k_dbg_desc_break(s, sizeof(rx_desc_hdr) - 1);
98 }
99
100
101 if (!ring->desc) {
102 seq_printf(s, "%03X Descriptor ring not allocated.\n", i);
103 } else {
104 union fm10k_rx_desc *rxd = FM10K_RX_DESC(ring, i);
105
106 seq_printf(s,
107 "%03X %#010x %#010x %#010x %#06x %#06x %#06x %#06x %#018llx\n",
108 i, rxd->d.data, rxd->d.rss, rxd->d.staterr,
109 rxd->w.length, rxd->w.vlan, rxd->w.dglort,
110 rxd->w.sglort, rxd->q.timestamp);
111 }
112
113 return 0;
114}
115
116static const struct seq_operations fm10k_dbg_tx_desc_seq_ops = {
117 .start = fm10k_dbg_desc_seq_start,
118 .next = fm10k_dbg_desc_seq_next,
119 .stop = fm10k_dbg_desc_seq_stop,
120 .show = fm10k_dbg_tx_desc_seq_show,
121};
122
123static const struct seq_operations fm10k_dbg_rx_desc_seq_ops = {
124 .start = fm10k_dbg_desc_seq_start,
125 .next = fm10k_dbg_desc_seq_next,
126 .stop = fm10k_dbg_desc_seq_stop,
127 .show = fm10k_dbg_rx_desc_seq_show,
128};
129
130static int fm10k_dbg_desc_open(struct inode *inode, struct file *filep)
131{
132 struct fm10k_ring *ring = inode->i_private;
133 struct fm10k_q_vector *q_vector = ring->q_vector;
134 const struct seq_operations *desc_seq_ops;
135 int err;
136
137 if (ring < q_vector->rx.ring)
138 desc_seq_ops = &fm10k_dbg_tx_desc_seq_ops;
139 else
140 desc_seq_ops = &fm10k_dbg_rx_desc_seq_ops;
141
142 err = seq_open(filep, desc_seq_ops);
143 if (err)
144 return err;
145
146 ((struct seq_file *)filep->private_data)->private = ring;
147
148 return 0;
149}
150
151static const struct file_operations fm10k_dbg_desc_fops = {
152 .owner = THIS_MODULE,
153 .open = fm10k_dbg_desc_open,
154 .read = seq_read,
155 .llseek = seq_lseek,
156 .release = seq_release,
157};
158
159
160
161
162
163
164
165
166
167void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector)
168{
169 struct fm10k_intfc *interface = q_vector->interface;
170 char name[16];
171 int i;
172
173 if (!interface->dbg_intfc)
174 return;
175
176
177 snprintf(name, sizeof(name), "q_vector.%03d", q_vector->v_idx);
178
179 q_vector->dbg_q_vector = debugfs_create_dir(name, interface->dbg_intfc);
180 if (!q_vector->dbg_q_vector)
181 return;
182
183
184 for (i = 0; i < q_vector->tx.count; i++) {
185 struct fm10k_ring *ring = &q_vector->tx.ring[i];
186
187 snprintf(name, sizeof(name), "tx_ring.%03d", ring->queue_index);
188
189 debugfs_create_file(name, 0600,
190 q_vector->dbg_q_vector, ring,
191 &fm10k_dbg_desc_fops);
192 }
193
194
195 for (i = 0; i < q_vector->rx.count; i++) {
196 struct fm10k_ring *ring = &q_vector->rx.ring[i];
197
198 snprintf(name, sizeof(name), "rx_ring.%03d", ring->queue_index);
199
200 debugfs_create_file(name, 0600,
201 q_vector->dbg_q_vector, ring,
202 &fm10k_dbg_desc_fops);
203 }
204}
205
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208
209
210void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector)
211{
212 struct fm10k_intfc *interface = q_vector->interface;
213
214 if (interface->dbg_intfc)
215 debugfs_remove_recursive(q_vector->dbg_q_vector);
216 q_vector->dbg_q_vector = NULL;
217}
218
219
220
221
222
223
224void fm10k_dbg_intfc_init(struct fm10k_intfc *interface)
225{
226 const char *name = pci_name(interface->pdev);
227
228 if (dbg_root)
229 interface->dbg_intfc = debugfs_create_dir(name, dbg_root);
230}
231
232
233
234
235
236void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface)
237{
238 if (dbg_root)
239 debugfs_remove_recursive(interface->dbg_intfc);
240 interface->dbg_intfc = NULL;
241}
242
243
244
245
246void fm10k_dbg_init(void)
247{
248 dbg_root = debugfs_create_dir(fm10k_driver_name, NULL);
249}
250
251
252
253
254void fm10k_dbg_exit(void)
255{
256 debugfs_remove_recursive(dbg_root);
257 dbg_root = NULL;
258}
259