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Diffstat (limited to 'drivers/net/wireless/ath/wil6210/debugfs.c')
-rw-r--r--drivers/net/wireless/ath/wil6210/debugfs.c603
1 files changed, 603 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
new file mode 100644
index 000000000000..65fc9683bfd8
--- /dev/null
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -0,0 +1,603 @@
1/*
2 * Copyright (c) 2012 Qualcomm Atheros, Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <linux/module.h>
18#include <linux/debugfs.h>
19#include <linux/seq_file.h>
20#include <linux/pci.h>
21#include <linux/rtnetlink.h>
22
23#include "wil6210.h"
24#include "txrx.h"
25
26/* Nasty hack. Better have per device instances */
27static u32 mem_addr;
28static u32 dbg_txdesc_index;
29
30static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil,
31 const char *name, struct vring *vring)
32{
33 void __iomem *x = wmi_addr(wil, vring->hwtail);
34
35 seq_printf(s, "VRING %s = {\n", name);
36 seq_printf(s, " pa = 0x%016llx\n", (unsigned long long)vring->pa);
37 seq_printf(s, " va = 0x%p\n", vring->va);
38 seq_printf(s, " size = %d\n", vring->size);
39 seq_printf(s, " swtail = %d\n", vring->swtail);
40 seq_printf(s, " swhead = %d\n", vring->swhead);
41 seq_printf(s, " hwtail = [0x%08x] -> ", vring->hwtail);
42 if (x)
43 seq_printf(s, "0x%08x\n", ioread32(x));
44 else
45 seq_printf(s, "???\n");
46
47 if (vring->va && (vring->size < 1025)) {
48 uint i;
49 for (i = 0; i < vring->size; i++) {
50 volatile struct vring_tx_desc *d = &vring->va[i].tx;
51 if ((i % 64) == 0 && (i != 0))
52 seq_printf(s, "\n");
53 seq_printf(s, "%s", (d->dma.status & BIT(0)) ?
54 "S" : (vring->ctx[i] ? "H" : "h"));
55 }
56 seq_printf(s, "\n");
57 }
58 seq_printf(s, "}\n");
59}
60
61static int wil_vring_debugfs_show(struct seq_file *s, void *data)
62{
63 uint i;
64 struct wil6210_priv *wil = s->private;
65
66 wil_print_vring(s, wil, "rx", &wil->vring_rx);
67
68 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
69 struct vring *vring = &(wil->vring_tx[i]);
70 if (vring->va) {
71 char name[10];
72 snprintf(name, sizeof(name), "tx_%2d", i);
73 wil_print_vring(s, wil, name, vring);
74 }
75 }
76
77 return 0;
78}
79
80static int wil_vring_seq_open(struct inode *inode, struct file *file)
81{
82 return single_open(file, wil_vring_debugfs_show, inode->i_private);
83}
84
85static const struct file_operations fops_vring = {
86 .open = wil_vring_seq_open,
87 .release = single_release,
88 .read = seq_read,
89 .llseek = seq_lseek,
90};
91
92static void wil_print_ring(struct seq_file *s, const char *prefix,
93 void __iomem *off)
94{
95 struct wil6210_priv *wil = s->private;
96 struct wil6210_mbox_ring r;
97 int rsize;
98 uint i;
99
100 wil_memcpy_fromio_32(&r, off, sizeof(r));
101 wil_mbox_ring_le2cpus(&r);
102 /*
103 * we just read memory block from NIC. This memory may be
104 * garbage. Check validity before using it.
105 */
106 rsize = r.size / sizeof(struct wil6210_mbox_ring_desc);
107
108 seq_printf(s, "ring %s = {\n", prefix);
109 seq_printf(s, " base = 0x%08x\n", r.base);
110 seq_printf(s, " size = 0x%04x bytes -> %d entries\n", r.size, rsize);
111 seq_printf(s, " tail = 0x%08x\n", r.tail);
112 seq_printf(s, " head = 0x%08x\n", r.head);
113 seq_printf(s, " entry size = %d\n", r.entry_size);
114
115 if (r.size % sizeof(struct wil6210_mbox_ring_desc)) {
116 seq_printf(s, " ??? size is not multiple of %zd, garbage?\n",
117 sizeof(struct wil6210_mbox_ring_desc));
118 goto out;
119 }
120
121 if (!wmi_addr(wil, r.base) ||
122 !wmi_addr(wil, r.tail) ||
123 !wmi_addr(wil, r.head)) {
124 seq_printf(s, " ??? pointers are garbage?\n");
125 goto out;
126 }
127
128 for (i = 0; i < rsize; i++) {
129 struct wil6210_mbox_ring_desc d;
130 struct wil6210_mbox_hdr hdr;
131 size_t delta = i * sizeof(d);
132 void __iomem *x = wil->csr + HOSTADDR(r.base) + delta;
133
134 wil_memcpy_fromio_32(&d, x, sizeof(d));
135
136 seq_printf(s, " [%2x] %s %s%s 0x%08x", i,
137 d.sync ? "F" : "E",
138 (r.tail - r.base == delta) ? "t" : " ",
139 (r.head - r.base == delta) ? "h" : " ",
140 le32_to_cpu(d.addr));
141 if (0 == wmi_read_hdr(wil, d.addr, &hdr)) {
142 u16 len = le16_to_cpu(hdr.len);
143 seq_printf(s, " -> %04x %04x %04x %02x\n",
144 le16_to_cpu(hdr.seq), len,
145 le16_to_cpu(hdr.type), hdr.flags);
146 if (len <= MAX_MBOXITEM_SIZE) {
147 int n = 0;
148 unsigned char printbuf[16 * 3 + 2];
149 unsigned char databuf[MAX_MBOXITEM_SIZE];
150 void __iomem *src = wmi_buffer(wil, d.addr) +
151 sizeof(struct wil6210_mbox_hdr);
152 /*
153 * No need to check @src for validity -
154 * we already validated @d.addr while
155 * reading header
156 */
157 wil_memcpy_fromio_32(databuf, src, len);
158 while (n < len) {
159 int l = min(len - n, 16);
160 hex_dump_to_buffer(databuf + n, l,
161 16, 1, printbuf,
162 sizeof(printbuf),
163 false);
164 seq_printf(s, " : %s\n", printbuf);
165 n += l;
166 }
167 }
168 } else {
169 seq_printf(s, "\n");
170 }
171 }
172 out:
173 seq_printf(s, "}\n");
174}
175
176static int wil_mbox_debugfs_show(struct seq_file *s, void *data)
177{
178 struct wil6210_priv *wil = s->private;
179
180 wil_print_ring(s, "tx", wil->csr + HOST_MBOX +
181 offsetof(struct wil6210_mbox_ctl, tx));
182 wil_print_ring(s, "rx", wil->csr + HOST_MBOX +
183 offsetof(struct wil6210_mbox_ctl, rx));
184
185 return 0;
186}
187
188static int wil_mbox_seq_open(struct inode *inode, struct file *file)
189{
190 return single_open(file, wil_mbox_debugfs_show, inode->i_private);
191}
192
193static const struct file_operations fops_mbox = {
194 .open = wil_mbox_seq_open,
195 .release = single_release,
196 .read = seq_read,
197 .llseek = seq_lseek,
198};
199
200static int wil_debugfs_iomem_x32_set(void *data, u64 val)
201{
202 iowrite32(val, (void __iomem *)data);
203 wmb(); /* make sure write propagated to HW */
204
205 return 0;
206}
207
208static int wil_debugfs_iomem_x32_get(void *data, u64 *val)
209{
210 *val = ioread32((void __iomem *)data);
211
212 return 0;
213}
214
215DEFINE_SIMPLE_ATTRIBUTE(fops_iomem_x32, wil_debugfs_iomem_x32_get,
216 wil_debugfs_iomem_x32_set, "0x%08llx\n");
217
218static struct dentry *wil_debugfs_create_iomem_x32(const char *name,
219 mode_t mode,
220 struct dentry *parent,
221 void __iomem *value)
222{
223 return debugfs_create_file(name, mode, parent, (void * __force)value,
224 &fops_iomem_x32);
225}
226
227static int wil6210_debugfs_create_ISR(struct wil6210_priv *wil,
228 const char *name,
229 struct dentry *parent, u32 off)
230{
231 struct dentry *d = debugfs_create_dir(name, parent);
232
233 if (IS_ERR_OR_NULL(d))
234 return -ENODEV;
235
236 wil_debugfs_create_iomem_x32("ICC", S_IRUGO | S_IWUSR, d,
237 wil->csr + off);
238 wil_debugfs_create_iomem_x32("ICR", S_IRUGO | S_IWUSR, d,
239 wil->csr + off + 4);
240 wil_debugfs_create_iomem_x32("ICM", S_IRUGO | S_IWUSR, d,
241 wil->csr + off + 8);
242 wil_debugfs_create_iomem_x32("ICS", S_IWUSR, d,
243 wil->csr + off + 12);
244 wil_debugfs_create_iomem_x32("IMV", S_IRUGO | S_IWUSR, d,
245 wil->csr + off + 16);
246 wil_debugfs_create_iomem_x32("IMS", S_IWUSR, d,
247 wil->csr + off + 20);
248 wil_debugfs_create_iomem_x32("IMC", S_IWUSR, d,
249 wil->csr + off + 24);
250
251 return 0;
252}
253
254static int wil6210_debugfs_create_pseudo_ISR(struct wil6210_priv *wil,
255 struct dentry *parent)
256{
257 struct dentry *d = debugfs_create_dir("PSEUDO_ISR", parent);
258
259 if (IS_ERR_OR_NULL(d))
260 return -ENODEV;
261
262 wil_debugfs_create_iomem_x32("CAUSE", S_IRUGO, d, wil->csr +
263 HOSTADDR(RGF_DMA_PSEUDO_CAUSE));
264 wil_debugfs_create_iomem_x32("MASK_SW", S_IRUGO, d, wil->csr +
265 HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW));
266 wil_debugfs_create_iomem_x32("MASK_FW", S_IRUGO, d, wil->csr +
267 HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_FW));
268
269 return 0;
270}
271
272static int wil6210_debugfs_create_ITR_CNT(struct wil6210_priv *wil,
273 struct dentry *parent)
274{
275 struct dentry *d = debugfs_create_dir("ITR_CNT", parent);
276
277 if (IS_ERR_OR_NULL(d))
278 return -ENODEV;
279
280 wil_debugfs_create_iomem_x32("TRSH", S_IRUGO, d, wil->csr +
281 HOSTADDR(RGF_DMA_ITR_CNT_TRSH));
282 wil_debugfs_create_iomem_x32("DATA", S_IRUGO, d, wil->csr +
283 HOSTADDR(RGF_DMA_ITR_CNT_DATA));
284 wil_debugfs_create_iomem_x32("CTL", S_IRUGO, d, wil->csr +
285 HOSTADDR(RGF_DMA_ITR_CNT_CRL));
286
287 return 0;
288}
289
290static int wil_memread_debugfs_show(struct seq_file *s, void *data)
291{
292 struct wil6210_priv *wil = s->private;
293 void __iomem *a = wmi_buffer(wil, cpu_to_le32(mem_addr));
294
295 if (a)
296 seq_printf(s, "[0x%08x] = 0x%08x\n", mem_addr, ioread32(a));
297 else
298 seq_printf(s, "[0x%08x] = INVALID\n", mem_addr);
299
300 return 0;
301}
302
303static int wil_memread_seq_open(struct inode *inode, struct file *file)
304{
305 return single_open(file, wil_memread_debugfs_show, inode->i_private);
306}
307
308static const struct file_operations fops_memread = {
309 .open = wil_memread_seq_open,
310 .release = single_release,
311 .read = seq_read,
312 .llseek = seq_lseek,
313};
314
315static int wil_default_open(struct inode *inode, struct file *file)
316{
317 if (inode->i_private)
318 file->private_data = inode->i_private;
319
320 return 0;
321}
322
323static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf,
324 size_t count, loff_t *ppos)
325{
326 enum { max_count = 4096 };
327 struct debugfs_blob_wrapper *blob = file->private_data;
328 loff_t pos = *ppos;
329 size_t available = blob->size;
330 void *buf;
331 size_t ret;
332
333 if (pos < 0)
334 return -EINVAL;
335
336 if (pos >= available || !count)
337 return 0;
338
339 if (count > available - pos)
340 count = available - pos;
341 if (count > max_count)
342 count = max_count;
343
344 buf = kmalloc(count, GFP_KERNEL);
345 if (!buf)
346 return -ENOMEM;
347
348 wil_memcpy_fromio_32(buf, (const volatile void __iomem *)blob->data +
349 pos, count);
350
351 ret = copy_to_user(user_buf, buf, count);
352 kfree(buf);
353 if (ret == count)
354 return -EFAULT;
355
356 count -= ret;
357 *ppos = pos + count;
358
359 return count;
360}
361
362static const struct file_operations fops_ioblob = {
363 .read = wil_read_file_ioblob,
364 .open = wil_default_open,
365 .llseek = default_llseek,
366};
367
368static
369struct dentry *wil_debugfs_create_ioblob(const char *name,
370 mode_t mode,
371 struct dentry *parent,
372 struct debugfs_blob_wrapper *blob)
373{
374 return debugfs_create_file(name, mode, parent, blob, &fops_ioblob);
375}
376/*---reset---*/
377static ssize_t wil_write_file_reset(struct file *file, const char __user *buf,
378 size_t len, loff_t *ppos)
379{
380 struct wil6210_priv *wil = file->private_data;
381 struct net_device *ndev = wil_to_ndev(wil);
382
383 /**
384 * BUG:
385 * this code does NOT sync device state with the rest of system
386 * use with care, debug only!!!
387 */
388 rtnl_lock();
389 dev_close(ndev);
390 ndev->flags &= ~IFF_UP;
391 rtnl_unlock();
392 wil_reset(wil);
393
394 return len;
395}
396
397static const struct file_operations fops_reset = {
398 .write = wil_write_file_reset,
399 .open = wil_default_open,
400};
401/*---------Tx descriptor------------*/
402
403static int wil_txdesc_debugfs_show(struct seq_file *s, void *data)
404{
405 struct wil6210_priv *wil = s->private;
406 struct vring *vring = &(wil->vring_tx[0]);
407
408 if (!vring->va) {
409 seq_printf(s, "No Tx VRING\n");
410 return 0;
411 }
412
413 if (dbg_txdesc_index < vring->size) {
414 volatile struct vring_tx_desc *d =
415 &(vring->va[dbg_txdesc_index].tx);
416 volatile u32 *u = (volatile u32 *)d;
417 struct sk_buff *skb = vring->ctx[dbg_txdesc_index];
418
419 seq_printf(s, "Tx[%3d] = {\n", dbg_txdesc_index);
420 seq_printf(s, " MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n",
421 u[0], u[1], u[2], u[3]);
422 seq_printf(s, " DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n",
423 u[4], u[5], u[6], u[7]);
424 seq_printf(s, " SKB = %p\n", skb);
425
426 if (skb) {
427 unsigned char printbuf[16 * 3 + 2];
428 int i = 0;
429 int len = skb_headlen(skb);
430 void *p = skb->data;
431
432 seq_printf(s, " len = %d\n", len);
433
434 while (i < len) {
435 int l = min(len - i, 16);
436 hex_dump_to_buffer(p + i, l, 16, 1, printbuf,
437 sizeof(printbuf), false);
438 seq_printf(s, " : %s\n", printbuf);
439 i += l;
440 }
441 }
442 seq_printf(s, "}\n");
443 } else {
444 seq_printf(s, "TxDesc index (%d) >= size (%d)\n",
445 dbg_txdesc_index, vring->size);
446 }
447
448 return 0;
449}
450
451static int wil_txdesc_seq_open(struct inode *inode, struct file *file)
452{
453 return single_open(file, wil_txdesc_debugfs_show, inode->i_private);
454}
455
456static const struct file_operations fops_txdesc = {
457 .open = wil_txdesc_seq_open,
458 .release = single_release,
459 .read = seq_read,
460 .llseek = seq_lseek,
461};
462
463/*---------beamforming------------*/
464static int wil_bf_debugfs_show(struct seq_file *s, void *data)
465{
466 struct wil6210_priv *wil = s->private;
467 seq_printf(s,
468 "TSF : 0x%016llx\n"
469 "TxMCS : %d\n"
470 "Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n",
471 wil->stats.tsf, wil->stats.bf_mcs,
472 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
473 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
474 return 0;
475}
476
477static int wil_bf_seq_open(struct inode *inode, struct file *file)
478{
479 return single_open(file, wil_bf_debugfs_show, inode->i_private);
480}
481
482static const struct file_operations fops_bf = {
483 .open = wil_bf_seq_open,
484 .release = single_release,
485 .read = seq_read,
486 .llseek = seq_lseek,
487};
488/*---------SSID------------*/
489static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
490 size_t count, loff_t *ppos)
491{
492 struct wil6210_priv *wil = file->private_data;
493 struct wireless_dev *wdev = wil_to_wdev(wil);
494
495 return simple_read_from_buffer(user_buf, count, ppos,
496 wdev->ssid, wdev->ssid_len);
497}
498
499static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
500 size_t count, loff_t *ppos)
501{
502 struct wil6210_priv *wil = file->private_data;
503 struct wireless_dev *wdev = wil_to_wdev(wil);
504 struct net_device *ndev = wil_to_ndev(wil);
505
506 if (*ppos != 0) {
507 wil_err(wil, "Unable to set SSID substring from [%d]\n",
508 (int)*ppos);
509 return -EINVAL;
510 }
511
512 if (count > sizeof(wdev->ssid)) {
513 wil_err(wil, "SSID too long, len = %d\n", (int)count);
514 return -EINVAL;
515 }
516 if (netif_running(ndev)) {
517 wil_err(wil, "Unable to change SSID on running interface\n");
518 return -EINVAL;
519 }
520
521 wdev->ssid_len = count;
522 return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
523 buf, count);
524}
525
526static const struct file_operations fops_ssid = {
527 .read = wil_read_file_ssid,
528 .write = wil_write_file_ssid,
529 .open = wil_default_open,
530};
531
532/*----------------*/
533int wil6210_debugfs_init(struct wil6210_priv *wil)
534{
535 struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
536 wil_to_wiphy(wil)->debugfsdir);
537
538 if (IS_ERR_OR_NULL(dbg))
539 return -ENODEV;
540
541 debugfs_create_file("mbox", S_IRUGO, dbg, wil, &fops_mbox);
542 debugfs_create_file("vrings", S_IRUGO, dbg, wil, &fops_vring);
543 debugfs_create_file("txdesc", S_IRUGO, dbg, wil, &fops_txdesc);
544 debugfs_create_u32("txdesc_index", S_IRUGO | S_IWUSR, dbg,
545 &dbg_txdesc_index);
546 debugfs_create_file("bf", S_IRUGO, dbg, wil, &fops_bf);
547 debugfs_create_file("ssid", S_IRUGO | S_IWUSR, dbg, wil, &fops_ssid);
548 debugfs_create_u32("secure_pcp", S_IRUGO | S_IWUSR, dbg,
549 &wil->secure_pcp);
550
551 wil6210_debugfs_create_ISR(wil, "USER_ICR", dbg,
552 HOSTADDR(RGF_USER_USER_ICR));
553 wil6210_debugfs_create_ISR(wil, "DMA_EP_TX_ICR", dbg,
554 HOSTADDR(RGF_DMA_EP_TX_ICR));
555 wil6210_debugfs_create_ISR(wil, "DMA_EP_RX_ICR", dbg,
556 HOSTADDR(RGF_DMA_EP_RX_ICR));
557 wil6210_debugfs_create_ISR(wil, "DMA_EP_MISC_ICR", dbg,
558 HOSTADDR(RGF_DMA_EP_MISC_ICR));
559 wil6210_debugfs_create_pseudo_ISR(wil, dbg);
560 wil6210_debugfs_create_ITR_CNT(wil, dbg);
561
562 debugfs_create_u32("mem_addr", S_IRUGO | S_IWUSR, dbg, &mem_addr);
563 debugfs_create_file("mem_val", S_IRUGO, dbg, wil, &fops_memread);
564
565 debugfs_create_file("reset", S_IWUSR, dbg, wil, &fops_reset);
566
567 wil->rgf_blob.data = (void * __force)wil->csr + 0;
568 wil->rgf_blob.size = 0xa000;
569 wil_debugfs_create_ioblob("blob_rgf", S_IRUGO, dbg, &wil->rgf_blob);
570
571 wil->fw_code_blob.data = (void * __force)wil->csr + 0x40000;
572 wil->fw_code_blob.size = 0x40000;
573 wil_debugfs_create_ioblob("blob_fw_code", S_IRUGO, dbg,
574 &wil->fw_code_blob);
575
576 wil->fw_data_blob.data = (void * __force)wil->csr + 0x80000;
577 wil->fw_data_blob.size = 0x8000;
578 wil_debugfs_create_ioblob("blob_fw_data", S_IRUGO, dbg,
579 &wil->fw_data_blob);
580
581 wil->fw_peri_blob.data = (void * __force)wil->csr + 0x88000;
582 wil->fw_peri_blob.size = 0x18000;
583 wil_debugfs_create_ioblob("blob_fw_peri", S_IRUGO, dbg,
584 &wil->fw_peri_blob);
585
586 wil->uc_code_blob.data = (void * __force)wil->csr + 0xa0000;
587 wil->uc_code_blob.size = 0x10000;
588 wil_debugfs_create_ioblob("blob_uc_code", S_IRUGO, dbg,
589 &wil->uc_code_blob);
590
591 wil->uc_data_blob.data = (void * __force)wil->csr + 0xb0000;
592 wil->uc_data_blob.size = 0x4000;
593 wil_debugfs_create_ioblob("blob_uc_data", S_IRUGO, dbg,
594 &wil->uc_data_blob);
595
596 return 0;
597}
598
599void wil6210_debugfs_remove(struct wil6210_priv *wil)
600{
601 debugfs_remove_recursive(wil->debug);
602 wil->debug = NULL;
603}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-20 09:32:18 -0500