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wil6210: fix PTR_ERR() usage after initialization to constant
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / debugfs.c
CommitLineData
2be7d22f 1/*
02525a79 2 * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
2be7d22f
VK		 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>
84bb29b7 22#include <linux/power_supply.h>
2be7d22f
VK		 23
24#include "wil6210.h"
36345ac3 25#include "wmi.h"
2be7d22f
VK		 26#include "txrx.h"
27
28/* Nasty hack. Better have per device instances */
29static u32 mem_addr;
30static u32 dbg_txdesc_index;
af31cb5a 31static u32 dbg_vring_index; /* 24+ for Rx, 0..23 for Tx */
2be7d22f 32
b7cde470
VK		 33enum dbg_off_type {
34 doff_u32 = 0,
35 doff_x32 = 1,
36 doff_ulong = 2,
37 doff_io32 = 3,
38};
39
40/* offset to "wil" */
41struct dbg_off {
42 const char *name;
43 umode_t mode;
44 ulong off;
45 enum dbg_off_type type;
46};
47
2be7d22f 48static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil,
59f7c0a9
VK		 49 const char *name, struct vring *vring,
50 char _s, char _h)
2be7d22f
VK		 51{
52 void __iomem *x = wmi_addr(wil, vring->hwtail);
53
54 seq_printf(s, "VRING %s = {\n", name);
39c52ee8 55 seq_printf(s, " pa = %pad\n", &vring->pa);
2be7d22f
VK		 56 seq_printf(s, " va = 0x%p\n", vring->va);
57 seq_printf(s, " size = %d\n", vring->size);
58 seq_printf(s, " swtail = %d\n", vring->swtail);
59 seq_printf(s, " swhead = %d\n", vring->swhead);
60 seq_printf(s, " hwtail = [0x%08x] -> ", vring->hwtail);
61 if (x)
62 seq_printf(s, "0x%08x\n", ioread32(x));
63 else
8fe59627 64 seq_puts(s, "???\n");
2be7d22f
VK		 65
66 if (vring->va && (vring->size < 1025)) {
67 uint i;
8fe59627 68
2be7d22f
VK		 69 for (i = 0; i < vring->size; i++) {
70 volatile struct vring_tx_desc *d = &vring->va[i].tx;
8fe59627 71
2be7d22f 72 if ((i % 64) == 0 && (i != 0))
8fe59627 73 seq_puts(s, "\n");
59f7c0a9
VK		 74 seq_printf(s, "%c", (d->dma.status & BIT(0)) ?
75 _s : (vring->ctx[i].skb ? _h : 'h'));
2be7d22f 76 }
8fe59627 77 seq_puts(s, "\n");
2be7d22f 78 }
8fe59627 79 seq_puts(s, "}\n");
2be7d22f
VK		 80}
81
82static int wil_vring_debugfs_show(struct seq_file *s, void *data)
83{
84 uint i;
85 struct wil6210_priv *wil = s->private;
86
59f7c0a9 87 wil_print_vring(s, wil, "rx", &wil->vring_rx, 'S', '_');
2be7d22f
VK		 88
89 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
8fe59627 90 struct vring *vring = &wil->vring_tx[i];
7c0acf86
VK		 91 struct vring_tx_data *txdata = &wil->vring_tx_data[i];
92
2be7d22f 93 if (vring->va) {
3df2cd36
VK		 94 int cid = wil->vring2cid_tid[i][0];
95 int tid = wil->vring2cid_tid[i][1];
67c3e1b4
VK		 96 u32 swhead = vring->swhead;
97 u32 swtail = vring->swtail;
98 int used = (vring->size + swhead - swtail)
99 % vring->size;
100 int avail = vring->size - used - 1;
2be7d22f 101 char name[10];
7c0acf86
VK		 102 /* performance monitoring */
103 cycles_t now = get_cycles();
e48b1790 104 cycles_t idle = txdata->idle * 100;
7c0acf86
VK		 105 cycles_t total = now - txdata->begin;
106
e48b1790 107 do_div(idle, total);
7c0acf86
VK		 108 txdata->begin = now;
109 txdata->idle = 0ULL;
110
2be7d22f 111 snprintf(name, sizeof(name), "tx_%2d", i);
3df2cd36 112
7c0acf86
VK		 113 seq_printf(s, "\n%pM CID %d TID %d [%3d|%3d] idle %3d%%\n",
114 wil->sta[cid].addr, cid, tid, used, avail,
e48b1790 115 (int)idle);
7c0acf86 116
59f7c0a9 117 wil_print_vring(s, wil, name, vring, '_', 'H');
2be7d22f
VK		 118 }
119 }
120
121 return 0;
122}
123
124static int wil_vring_seq_open(struct inode *inode, struct file *file)
125{
126 return single_open(file, wil_vring_debugfs_show, inode->i_private);
127}
128
129static const struct file_operations fops_vring = {
130 .open = wil_vring_seq_open,
131 .release = single_release,
132 .read = seq_read,
133 .llseek = seq_lseek,
134};
135
136static void wil_print_ring(struct seq_file *s, const char *prefix,
137 void __iomem *off)
138{
139 struct wil6210_priv *wil = s->private;
140 struct wil6210_mbox_ring r;
141 int rsize;
142 uint i;
143
144 wil_memcpy_fromio_32(&r, off, sizeof(r));
145 wil_mbox_ring_le2cpus(&r);
146 /*
147 * we just read memory block from NIC. This memory may be
148 * garbage. Check validity before using it.
149 */
150 rsize = r.size / sizeof(struct wil6210_mbox_ring_desc);
151
152 seq_printf(s, "ring %s = {\n", prefix);
153 seq_printf(s, " base = 0x%08x\n", r.base);
154 seq_printf(s, " size = 0x%04x bytes -> %d entries\n", r.size, rsize);
155 seq_printf(s, " tail = 0x%08x\n", r.tail);
156 seq_printf(s, " head = 0x%08x\n", r.head);
157 seq_printf(s, " entry size = %d\n", r.entry_size);
158
159 if (r.size % sizeof(struct wil6210_mbox_ring_desc)) {
160 seq_printf(s, " ??? size is not multiple of %zd, garbage?\n",
161 sizeof(struct wil6210_mbox_ring_desc));
162 goto out;
163 }
164
165 if (!wmi_addr(wil, r.base) ||
166 !wmi_addr(wil, r.tail) ||
167 !wmi_addr(wil, r.head)) {
8fe59627 168 seq_puts(s, " ??? pointers are garbage?\n");
2be7d22f
VK		 169 goto out;
170 }
171
172 for (i = 0; i < rsize; i++) {
173 struct wil6210_mbox_ring_desc d;
174 struct wil6210_mbox_hdr hdr;
175 size_t delta = i * sizeof(d);
176 void __iomem *x = wil->csr + HOSTADDR(r.base) + delta;
177
178 wil_memcpy_fromio_32(&d, x, sizeof(d));
179
180 seq_printf(s, " [%2x] %s %s%s 0x%08x", i,
181 d.sync ? "F" : "E",
182 (r.tail - r.base == delta) ? "t" : " ",
183 (r.head - r.base == delta) ? "h" : " ",
184 le32_to_cpu(d.addr));
185 if (0 == wmi_read_hdr(wil, d.addr, &hdr)) {
186 u16 len = le16_to_cpu(hdr.len);
8fe59627 187
2be7d22f
VK		 188 seq_printf(s, " -> %04x %04x %04x %02x\n",
189 le16_to_cpu(hdr.seq), len,
190 le16_to_cpu(hdr.type), hdr.flags);
191 if (len <= MAX_MBOXITEM_SIZE) {
192 int n = 0;
5d21608a 193 char printbuf[16 * 3 + 2];
2be7d22f
VK		 194 unsigned char databuf[MAX_MBOXITEM_SIZE];
195 void __iomem *src = wmi_buffer(wil, d.addr) +
196 sizeof(struct wil6210_mbox_hdr);
197 /*
198 * No need to check @src for validity -
199 * we already validated @d.addr while
200 * reading header
201 */
202 wil_memcpy_fromio_32(databuf, src, len);
203 while (n < len) {
204 int l = min(len - n, 16);
8fe59627 205
2be7d22f
VK		 206 hex_dump_to_buffer(databuf + n, l,
207 16, 1, printbuf,
208 sizeof(printbuf),
209 false);
210 seq_printf(s, " : %s\n", printbuf);
211 n += l;
212 }
213 }
214 } else {
8fe59627 215 seq_puts(s, "\n");
2be7d22f
VK		 216 }
217 }
218 out:
8fe59627 219 seq_puts(s, "}\n");
2be7d22f
VK		 220}
221
222static int wil_mbox_debugfs_show(struct seq_file *s, void *data)
223{
224 struct wil6210_priv *wil = s->private;
225
226 wil_print_ring(s, "tx", wil->csr + HOST_MBOX +
227 offsetof(struct wil6210_mbox_ctl, tx));
228 wil_print_ring(s, "rx", wil->csr + HOST_MBOX +
229 offsetof(struct wil6210_mbox_ctl, rx));
230
231 return 0;
232}
233
234static int wil_mbox_seq_open(struct inode *inode, struct file *file)
235{
236 return single_open(file, wil_mbox_debugfs_show, inode->i_private);
237}
238
239static const struct file_operations fops_mbox = {
240 .open = wil_mbox_seq_open,
241 .release = single_release,
242 .read = seq_read,
243 .llseek = seq_lseek,
244};
245
246static int wil_debugfs_iomem_x32_set(void *data, u64 val)
247{
248 iowrite32(val, (void __iomem *)data);
249 wmb(); /* make sure write propagated to HW */
250
251 return 0;
252}
253
254static int wil_debugfs_iomem_x32_get(void *data, u64 *val)
255{
256 *val = ioread32((void __iomem *)data);
257
258 return 0;
259}
260
261DEFINE_SIMPLE_ATTRIBUTE(fops_iomem_x32, wil_debugfs_iomem_x32_get,
262 wil_debugfs_iomem_x32_set, "0x%08llx\n");
263
264static struct dentry *wil_debugfs_create_iomem_x32(const char *name,
0ecc833b 265 umode_t mode,
2be7d22f 266 struct dentry *parent,
b7cde470 267 void *value)
2be7d22f 268{
b7cde470 269 return debugfs_create_file(name, mode, parent, value,
2be7d22f
VK		 270 &fops_iomem_x32);
271}
272
3de6cf20
VK		 273static int wil_debugfs_ulong_set(void *data, u64 val)
274{
275 *(ulong *)data = val;
276 return 0;
277}
8fe59627 278
3de6cf20
VK		 279static int wil_debugfs_ulong_get(void *data, u64 *val)
280{
281 *val = *(ulong *)data;
282 return 0;
283}
8fe59627 284
3de6cf20
VK		 285DEFINE_SIMPLE_ATTRIBUTE(wil_fops_ulong, wil_debugfs_ulong_get,
286 wil_debugfs_ulong_set, "%llu\n");
287
288static struct dentry *wil_debugfs_create_ulong(const char *name, umode_t mode,
289 struct dentry *parent,
290 ulong *value)
291{
292 return debugfs_create_file(name, mode, parent, value, &wil_fops_ulong);
293}
294
b7cde470
VK		 295/**
296 * wil6210_debugfs_init_offset - create set of debugfs files
297 * @wil - driver's context, used for printing
298 * @dbg - directory on the debugfs, where files will be created
299 * @base - base address used in address calculation
300 * @tbl - table with file descriptions. Should be terminated with empty element.
301 *
302 * Creates files accordingly to the @tbl.
303 */
304static void wil6210_debugfs_init_offset(struct wil6210_priv *wil,
305 struct dentry *dbg, void *base,
306 const struct dbg_off * const tbl)
307{
308 int i;
309
310 for (i = 0; tbl[i].name; i++) {
867fa0d4 311 struct dentry *f;
b7cde470
VK		 312
313 switch (tbl[i].type) {
314 case doff_u32:
315 f = debugfs_create_u32(tbl[i].name, tbl[i].mode, dbg,
316 base + tbl[i].off);
317 break;
318 case doff_x32:
319 f = debugfs_create_x32(tbl[i].name, tbl[i].mode, dbg,
320 base + tbl[i].off);
321 break;
322 case doff_ulong:
323 f = wil_debugfs_create_ulong(tbl[i].name, tbl[i].mode,
324 dbg, base + tbl[i].off);
325 break;
326 case doff_io32:
327 f = wil_debugfs_create_iomem_x32(tbl[i].name,
328 tbl[i].mode, dbg,
329 base + tbl[i].off);
330 break;
867fa0d4
VK		 331 default:
332 f = ERR_PTR(-EINVAL);
b7cde470
VK		 333 }
334 if (IS_ERR_OR_NULL(f))
335 wil_err(wil, "Create file \"%s\": err %ld\n",
336 tbl[i].name, PTR_ERR(f));
337 }
338}
339
340static const struct dbg_off isr_off[] = {
341 {"ICC", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICC), doff_io32},
342 {"ICR", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICR), doff_io32},
343 {"ICM", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICM), doff_io32},
344 {"ICS", S_IWUSR, offsetof(struct RGF_ICR, ICS), doff_io32},
345 {"IMV", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, IMV), doff_io32},
346 {"IMS", S_IWUSR, offsetof(struct RGF_ICR, IMS), doff_io32},
347 {"IMC", S_IWUSR, offsetof(struct RGF_ICR, IMC), doff_io32},
348 {},
349};
8fe59627 350
2be7d22f
VK		 351static int wil6210_debugfs_create_ISR(struct wil6210_priv *wil,
352 const char *name,
353 struct dentry *parent, u32 off)
354{
355 struct dentry *d = debugfs_create_dir(name, parent);
356
357 if (IS_ERR_OR_NULL(d))
358 return -ENODEV;
359
b7cde470
VK		 360 wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr + off,
361 isr_off);
2be7d22f
VK		 362
363 return 0;
364}
365
b7cde470
VK		 366static const struct dbg_off pseudo_isr_off[] = {
367 {"CAUSE", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE), doff_io32},
368 {"MASK_SW", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW), doff_io32},
369 {"MASK_FW", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_FW), doff_io32},
370 {},
371};
372
2be7d22f
VK		 373static int wil6210_debugfs_create_pseudo_ISR(struct wil6210_priv *wil,
374 struct dentry *parent)
375{
376 struct dentry *d = debugfs_create_dir("PSEUDO_ISR", parent);
377
378 if (IS_ERR_OR_NULL(d))
379 return -ENODEV;
380
b7cde470
VK		 381 wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
382 pseudo_isr_off);
2be7d22f
VK		 383
384 return 0;
385}
386
b7cde470
VK		 387static const struct dbg_off itr_cnt_off[] = {
388 {"TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_TRSH), doff_io32},
389 {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_DATA), doff_io32},
390 {"CTL", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_CRL), doff_io32},
391 {},
392};
393
2be7d22f
VK		 394static int wil6210_debugfs_create_ITR_CNT(struct wil6210_priv *wil,
395 struct dentry *parent)
396{
397 struct dentry *d = debugfs_create_dir("ITR_CNT", parent);
398
399 if (IS_ERR_OR_NULL(d))
400 return -ENODEV;
401
b7cde470
VK		 402 wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
403 itr_cnt_off);
2be7d22f
VK		 404
405 return 0;
406}
407
408static int wil_memread_debugfs_show(struct seq_file *s, void *data)
409{
410 struct wil6210_priv *wil = s->private;
411 void __iomem *a = wmi_buffer(wil, cpu_to_le32(mem_addr));
412
413 if (a)
414 seq_printf(s, "[0x%08x] = 0x%08x\n", mem_addr, ioread32(a));
415 else
416 seq_printf(s, "[0x%08x] = INVALID\n", mem_addr);
417
418 return 0;
419}
420
421static int wil_memread_seq_open(struct inode *inode, struct file *file)
422{
423 return single_open(file, wil_memread_debugfs_show, inode->i_private);
424}
425
426static const struct file_operations fops_memread = {
427 .open = wil_memread_seq_open,
428 .release = single_release,
429 .read = seq_read,
430 .llseek = seq_lseek,
431};
432
2be7d22f 433static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf,
8fe59627 434 size_t count, loff_t *ppos)
2be7d22f
VK		 435{
436 enum { max_count = 4096 };
437 struct debugfs_blob_wrapper *blob = file->private_data;
438 loff_t pos = *ppos;
439 size_t available = blob->size;
440 void *buf;
441 size_t ret;
442
443 if (pos < 0)
444 return -EINVAL;
445
446 if (pos >= available || !count)
447 return 0;
448
449 if (count > available - pos)
450 count = available - pos;
451 if (count > max_count)
452 count = max_count;
453
454 buf = kmalloc(count, GFP_KERNEL);
455 if (!buf)
456 return -ENOMEM;
457
458 wil_memcpy_fromio_32(buf, (const volatile void __iomem *)blob->data +
459 pos, count);
460
461 ret = copy_to_user(user_buf, buf, count);
462 kfree(buf);
463 if (ret == count)
464 return -EFAULT;
465
466 count -= ret;
467 *ppos = pos + count;
468
469 return count;
470}
471
472static const struct file_operations fops_ioblob = {
473 .read = wil_read_file_ioblob,
93ecbd64 474 .open = simple_open,
2be7d22f
VK		 475 .llseek = default_llseek,
476};
477
478static
479struct dentry *wil_debugfs_create_ioblob(const char *name,
0ecc833b 480 umode_t mode,
2be7d22f
VK		 481 struct dentry *parent,
482 struct debugfs_blob_wrapper *blob)
483{
484 return debugfs_create_file(name, mode, parent, blob, &fops_ioblob);
485}
8fe59627 486
2be7d22f
VK		 487/*---reset---*/
488static ssize_t wil_write_file_reset(struct file *file, const char __user *buf,
489 size_t len, loff_t *ppos)
490{
491 struct wil6210_priv *wil = file->private_data;
492 struct net_device *ndev = wil_to_ndev(wil);
493
494 /**
495 * BUG:
496 * this code does NOT sync device state with the rest of system
497 * use with care, debug only!!!
498 */
499 rtnl_lock();
500 dev_close(ndev);
501 ndev->flags &= ~IFF_UP;
502 rtnl_unlock();
503 wil_reset(wil);
504
505 return len;
506}
507
508static const struct file_operations fops_reset = {
509 .write = wil_write_file_reset,
93ecbd64 510 .open = simple_open,
2be7d22f 511};
8fe59627 512
0b39aaf2
VK		 513/*---write channel 1..4 to rxon for it, 0 to rxoff---*/
514static ssize_t wil_write_file_rxon(struct file *file, const char __user *buf,
515 size_t len, loff_t *ppos)
516{
517 struct wil6210_priv *wil = file->private_data;
518 int rc;
519 long channel;
520 bool on;
521
522 char *kbuf = kmalloc(len + 1, GFP_KERNEL);
8fe59627 523
0b39aaf2
VK		 524 if (!kbuf)
525 return -ENOMEM;
359ee627
VK		 526 if (copy_from_user(kbuf, buf, len)) {
527 kfree(kbuf);
0b39aaf2 528 return -EIO;
359ee627 529 }
0b39aaf2
VK		 530
531 kbuf[len] = '\0';
532 rc = kstrtol(kbuf, 0, &channel);
533 kfree(kbuf);
534 if (rc)
535 return rc;
536
537 if ((channel < 0) || (channel > 4)) {
538 wil_err(wil, "Invalid channel %ld\n", channel);
539 return -EINVAL;
540 }
541 on = !!channel;
542
543 if (on) {
544 rc = wmi_set_channel(wil, (int)channel);
545 if (rc)
546 return rc;
547 }
548
549 rc = wmi_rxon(wil, on);
550 if (rc)
551 return rc;
552
553 return len;
554}
555
556static const struct file_operations fops_rxon = {
557 .write = wil_write_file_rxon,
558 .open = simple_open,
559};
8fe59627 560
0b39aaf2
VK		 561/*---tx_mgmt---*/
562/* Write mgmt frame to this file to send it */
563static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
564 size_t len, loff_t *ppos)
565{
566 struct wil6210_priv *wil = file->private_data;
567 struct wiphy *wiphy = wil_to_wiphy(wil);
568 struct wireless_dev *wdev = wil_to_wdev(wil);
569 struct cfg80211_mgmt_tx_params params;
570 int rc;
0b39aaf2 571 void *frame = kmalloc(len, GFP_KERNEL);
8fe59627 572
0b39aaf2
VK		 573 if (!frame)
574 return -ENOMEM;
575
576 if (copy_from_user(frame, buf, len))
577 return -EIO;
578
579 params.buf = frame;
580 params.len = len;
581 params.chan = wdev->preset_chandef.chan;
582
583 rc = wil_cfg80211_mgmt_tx(wiphy, wdev, &params, NULL);
584
585 kfree(frame);
586 wil_info(wil, "%s() -> %d\n", __func__, rc);
587
588 return len;
589}
590
591static const struct file_operations fops_txmgmt = {
592 .write = wil_write_file_txmgmt,
593 .open = simple_open,
594};
2be7d22f 595
ff974e40
VK		 596/* Write WMI command (w/o mbox header) to this file to send it
597 * WMI starts from wil6210_mbox_hdr_wmi header
598 */
599static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
600 size_t len, loff_t *ppos)
601{
602 struct wil6210_priv *wil = file->private_data;
603 struct wil6210_mbox_hdr_wmi *wmi;
604 void *cmd;
605 int cmdlen = len - sizeof(struct wil6210_mbox_hdr_wmi);
606 u16 cmdid;
607 int rc, rc1;
608
609 if (cmdlen <= 0)
610 return -EINVAL;
611
612 wmi = kmalloc(len, GFP_KERNEL);
613 if (!wmi)
614 return -ENOMEM;
615
616 rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
617 if (rc < 0)
618 return rc;
619
620 cmd = &wmi[1];
621 cmdid = le16_to_cpu(wmi->id);
622
623 rc1 = wmi_send(wil, cmdid, cmd, cmdlen);
624 kfree(wmi);
625
626 wil_info(wil, "%s(0x%04x[%d]) -> %d\n", __func__, cmdid, cmdlen, rc1);
627
628 return rc;
629}
630
631static const struct file_operations fops_wmi = {
632 .write = wil_write_file_wmi,
633 .open = simple_open,
634};
635
c236658f
VK		 636static void wil_seq_hexdump(struct seq_file *s, void *p, int len,
637 const char *prefix)
638{
639 char printbuf[16 * 3 + 2];
640 int i = 0;
8fe59627 641
c236658f
VK		 642 while (i < len) {
643 int l = min(len - i, 16);
8fe59627 644
c236658f
VK		 645 hex_dump_to_buffer(p + i, l, 16, 1, printbuf,
646 sizeof(printbuf), false);
647 seq_printf(s, "%s%s\n", prefix, printbuf);
648 i += l;
649 }
650}
651
652static void wil_seq_print_skb(struct seq_file *s, struct sk_buff *skb)
653{
654 int i = 0;
655 int len = skb_headlen(skb);
656 void *p = skb->data;
657 int nr_frags = skb_shinfo(skb)->nr_frags;
658
659 seq_printf(s, " len = %d\n", len);
660 wil_seq_hexdump(s, p, len, " : ");
661
662 if (nr_frags) {
663 seq_printf(s, " nr_frags = %d\n", nr_frags);
664 for (i = 0; i < nr_frags; i++) {
665 const struct skb_frag_struct *frag =
666 &skb_shinfo(skb)->frags[i];
667
668 len = skb_frag_size(frag);
669 p = skb_frag_address_safe(frag);
670 seq_printf(s, " [%2d] : len = %d\n", i, len);
671 wil_seq_hexdump(s, p, len, " : ");
672 }
673 }
674}
675
3a85543e 676/*---------Tx/Rx descriptor------------*/
2be7d22f
VK		 677static int wil_txdesc_debugfs_show(struct seq_file *s, void *data)
678{
679 struct wil6210_priv *wil = s->private;
3a85543e 680 struct vring *vring;
af31cb5a 681 bool tx = (dbg_vring_index < WIL6210_MAX_TX_RINGS);
8fe59627
VK		 682
683 vring = tx ? &wil->vring_tx[dbg_vring_index] : &wil->vring_rx;
2be7d22f
VK		 684
685 if (!vring->va) {
af31cb5a 686 if (tx)
3a85543e
VK		 687 seq_printf(s, "No Tx[%2d] VRING\n", dbg_vring_index);
688 else
689 seq_puts(s, "No Rx VRING\n");
2be7d22f
VK		 690 return 0;
691 }
692
693 if (dbg_txdesc_index < vring->size) {
3a85543e
VK		 694 /* use struct vring_tx_desc for Rx as well,
695 * only field used, .dma.length, is the same
696 */
2be7d22f 697 volatile struct vring_tx_desc *d =
8fe59627 698 &vring->va[dbg_txdesc_index].tx;
2be7d22f 699 volatile u32 *u = (volatile u32 *)d;
f88f113a 700 struct sk_buff *skb = vring->ctx[dbg_txdesc_index].skb;
2be7d22f 701
af31cb5a 702 if (tx)
3a85543e
VK		 703 seq_printf(s, "Tx[%2d][%3d] = {\n", dbg_vring_index,
704 dbg_txdesc_index);
705 else
706 seq_printf(s, "Rx[%3d] = {\n", dbg_txdesc_index);
2be7d22f
VK		 707 seq_printf(s, " MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n",
708 u[0], u[1], u[2], u[3]);
709 seq_printf(s, " DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n",
710 u[4], u[5], u[6], u[7]);
39c52ee8 711 seq_printf(s, " SKB = 0x%p\n", skb);
2be7d22f
VK		 712
713 if (skb) {
c236658f
VK		 714 skb_get(skb);
715 wil_seq_print_skb(s, skb);
716 kfree_skb(skb);
2be7d22f 717 }
8fe59627 718 seq_puts(s, "}\n");
2be7d22f 719 } else {
af31cb5a 720 if (tx)
3a85543e
VK		 721 seq_printf(s, "[%2d] TxDesc index (%d) >= size (%d)\n",
722 dbg_vring_index, dbg_txdesc_index,
723 vring->size);
724 else
725 seq_printf(s, "RxDesc index (%d) >= size (%d)\n",
726 dbg_txdesc_index, vring->size);
2be7d22f
VK		 727 }
728
729 return 0;
730}
731
732static int wil_txdesc_seq_open(struct inode *inode, struct file *file)
733{
734 return single_open(file, wil_txdesc_debugfs_show, inode->i_private);
735}
736
737static const struct file_operations fops_txdesc = {
738 .open = wil_txdesc_seq_open,
739 .release = single_release,
740 .read = seq_read,
741 .llseek = seq_lseek,
742};
743
744/*---------beamforming------------*/
36345ac3
VK		 745static char *wil_bfstatus_str(u32 status)
746{
747 switch (status) {
748 case 0:
749 return "Failed";
750 case 1:
751 return "OK";
752 case 2:
753 return "Retrying";
754 default:
755 return "??";
756 }
757}
758
759static bool is_all_zeros(void * const x_, size_t sz)
760{
761 /* if reply is all-0, ignore this CID */
762 u32 *x = x_;
763 int n;
764
765 for (n = 0; n < sz / sizeof(*x); n++)
766 if (x[n])
767 return false;
768
769 return true;
770}
771
2be7d22f
VK		 772static int wil_bf_debugfs_show(struct seq_file *s, void *data)
773{
36345ac3
VK		 774 int rc;
775 int i;
2be7d22f 776 struct wil6210_priv *wil = s->private;
36345ac3
VK		 777 struct wmi_notify_req_cmd cmd = {
778 .interval_usec = 0,
779 };
780 struct {
781 struct wil6210_mbox_hdr_wmi wmi;
782 struct wmi_notify_req_done_event evt;
783 } __packed reply;
784
785 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
786 u32 status;
787
788 cmd.cid = i;
789 rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
790 WMI_NOTIFY_REQ_DONE_EVENTID, &reply,
791 sizeof(reply), 20);
792 /* if reply is all-0, ignore this CID */
793 if (rc || is_all_zeros(&reply.evt, sizeof(reply.evt)))
794 continue;
795
796 status = le32_to_cpu(reply.evt.status);
797 seq_printf(s, "CID %d {\n"
798 " TSF = 0x%016llx\n"
799 " TxMCS = %2d TxTpt = %4d\n"
800 " SQI = %4d\n"
801 " Status = 0x%08x %s\n"
802 " Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n"
803 " Goodput(rx:tx) %4d:%4d\n"
804 "}\n",
805 i,
806 le64_to_cpu(reply.evt.tsf),
807 le16_to_cpu(reply.evt.bf_mcs),
808 le32_to_cpu(reply.evt.tx_tpt),
809 reply.evt.sqi,
810 status, wil_bfstatus_str(status),
811 le16_to_cpu(reply.evt.my_rx_sector),
812 le16_to_cpu(reply.evt.my_tx_sector),
813 le16_to_cpu(reply.evt.other_rx_sector),
814 le16_to_cpu(reply.evt.other_tx_sector),
815 le32_to_cpu(reply.evt.rx_goodput),
816 le32_to_cpu(reply.evt.tx_goodput));
817 }
2be7d22f
VK		 818 return 0;
819}
820
821static int wil_bf_seq_open(struct inode *inode, struct file *file)
822{
823 return single_open(file, wil_bf_debugfs_show, inode->i_private);
824}
825
826static const struct file_operations fops_bf = {
827 .open = wil_bf_seq_open,
828 .release = single_release,
829 .read = seq_read,
830 .llseek = seq_lseek,
831};
8fe59627 832
2be7d22f
VK		 833/*---------SSID------------*/
834static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
835 size_t count, loff_t *ppos)
836{
837 struct wil6210_priv *wil = file->private_data;
838 struct wireless_dev *wdev = wil_to_wdev(wil);
839
840 return simple_read_from_buffer(user_buf, count, ppos,
841 wdev->ssid, wdev->ssid_len);
842}
843
844static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
845 size_t count, loff_t *ppos)
846{
847 struct wil6210_priv *wil = file->private_data;
848 struct wireless_dev *wdev = wil_to_wdev(wil);
849 struct net_device *ndev = wil_to_ndev(wil);
850
851 if (*ppos != 0) {
852 wil_err(wil, "Unable to set SSID substring from [%d]\n",
853 (int)*ppos);
854 return -EINVAL;
855 }
856
857 if (count > sizeof(wdev->ssid)) {
858 wil_err(wil, "SSID too long, len = %d\n", (int)count);
859 return -EINVAL;
860 }
861 if (netif_running(ndev)) {
862 wil_err(wil, "Unable to change SSID on running interface\n");
863 return -EINVAL;
864 }
865
866 wdev->ssid_len = count;
867 return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
868 buf, count);
869}
870
871static const struct file_operations fops_ssid = {
872 .read = wil_read_file_ssid,
873 .write = wil_write_file_ssid,
93ecbd64 874 .open = simple_open,
2be7d22f
VK		 875};
876
1a2780e0
VK		 877/*---------temp------------*/
878static void print_temp(struct seq_file *s, const char *prefix, u32 t)
879{
880 switch (t) {
881 case 0:
882 case ~(u32)0:
883 seq_printf(s, "%s N/A\n", prefix);
884 break;
885 default:
886 seq_printf(s, "%s %d.%03d\n", prefix, t / 1000, t % 1000);
887 break;
888 }
889}
890
891static int wil_temp_debugfs_show(struct seq_file *s, void *data)
892{
893 struct wil6210_priv *wil = s->private;
894 u32 t_m, t_r;
1a2780e0 895 int rc = wmi_get_temperature(wil, &t_m, &t_r);
8fe59627 896
1a2780e0 897 if (rc) {
8fe59627 898 seq_puts(s, "Failed\n");
1a2780e0
VK		 899 return 0;
900 }
901
d45cff9f
VK		 902 print_temp(s, "T_mac =", t_m);
903 print_temp(s, "T_radio =", t_r);
1a2780e0
VK		 904
905 return 0;
906}
907
908static int wil_temp_seq_open(struct inode *inode, struct file *file)
909{
910 return single_open(file, wil_temp_debugfs_show, inode->i_private);
911}
912
913static const struct file_operations fops_temp = {
914 .open = wil_temp_seq_open,
915 .release = single_release,
916 .read = seq_read,
917 .llseek = seq_lseek,
918};
919
9eb82d43
VK		 920/*---------freq------------*/
921static int wil_freq_debugfs_show(struct seq_file *s, void *data)
922{
923 struct wil6210_priv *wil = s->private;
924 struct wireless_dev *wdev = wil_to_wdev(wil);
925 u16 freq = wdev->chandef.chan ? wdev->chandef.chan->center_freq : 0;
926
927 seq_printf(s, "Freq = %d\n", freq);
928
929 return 0;
930}
931
932static int wil_freq_seq_open(struct inode *inode, struct file *file)
933{
934 return single_open(file, wil_freq_debugfs_show, inode->i_private);
935}
936
937static const struct file_operations fops_freq = {
938 .open = wil_freq_seq_open,
939 .release = single_release,
940 .read = seq_read,
941 .llseek = seq_lseek,
942};
943
944/*---------link------------*/
945static int wil_link_debugfs_show(struct seq_file *s, void *data)
946{
947 struct wil6210_priv *wil = s->private;
948 struct station_info sinfo;
949 int i, rc;
950
951 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
952 struct wil_sta_info *p = &wil->sta[i];
953 char *status = "unknown";
8fe59627 954
9eb82d43
VK		 955 switch (p->status) {
956 case wil_sta_unused:
957 status = "unused ";
958 break;
959 case wil_sta_conn_pending:
960 status = "pending ";
961 break;
962 case wil_sta_connected:
963 status = "connected";
964 break;
965 }
966 seq_printf(s, "[%d] %pM %s%s\n", i, p->addr, status,
967 (p->data_port_open ? " data_port_open" : ""));
968
969 if (p->status == wil_sta_connected) {
970 rc = wil_cid_fill_sinfo(wil, i, &sinfo);
971 if (rc)
972 return rc;
973
974 seq_printf(s, " Tx_mcs = %d\n", sinfo.txrate.mcs);
975 seq_printf(s, " Rx_mcs = %d\n", sinfo.rxrate.mcs);
976 seq_printf(s, " SQ = %d\n", sinfo.signal);
977 }
978 }
979
980 return 0;
981}
982
983static int wil_link_seq_open(struct inode *inode, struct file *file)
984{
985 return single_open(file, wil_link_debugfs_show, inode->i_private);
986}
987
988static const struct file_operations fops_link = {
989 .open = wil_link_seq_open,
990 .release = single_release,
991 .read = seq_read,
992 .llseek = seq_lseek,
993};
994
84bb29b7
VK		 995/*---------info------------*/
996static int wil_info_debugfs_show(struct seq_file *s, void *data)
997{
be299858
VK		 998 struct wil6210_priv *wil = s->private;
999 struct net_device *ndev = wil_to_ndev(wil);
84bb29b7 1000 int is_ac = power_supply_is_system_supplied();
be299858
VK		 1001 int rx = atomic_xchg(&wil->isr_count_rx, 0);
1002 int tx = atomic_xchg(&wil->isr_count_tx, 0);
1003 static ulong rxf_old, txf_old;
1004 ulong rxf = ndev->stats.rx_packets;
1005 ulong txf = ndev->stats.tx_packets;
55f8f680 1006 unsigned int i;
84bb29b7
VK		 1007
1008 /* >0 : AC; 0 : battery; <0 : error */
1009 seq_printf(s, "AC powered : %d\n", is_ac);
be299858
VK		 1010 seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);
1011 seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);
1012 rxf_old = rxf;
1013 txf_old = txf;
84bb29b7 1014
55f8f680
VK		 1015#define CHECK_QSTATE(x) (state & BIT(__QUEUE_STATE_ ## x)) ? \
1016 " " __stringify(x) : ""
1017
1018 for (i = 0; i < ndev->num_tx_queues; i++) {
1019 struct netdev_queue *txq = netdev_get_tx_queue(ndev, i);
1020 unsigned long state = txq->state;
1021
1022 seq_printf(s, "Tx queue[%i] state : 0x%lx%s%s%s\n", i, state,
1023 CHECK_QSTATE(DRV_XOFF),
1024 CHECK_QSTATE(STACK_XOFF),
1025 CHECK_QSTATE(FROZEN)
1026 );
1027 }
1028#undef CHECK_QSTATE
84bb29b7
VK		 1029 return 0;
1030}
1031
1032static int wil_info_seq_open(struct inode *inode, struct file *file)
1033{
1034 return single_open(file, wil_info_debugfs_show, inode->i_private);
1035}
1036
1037static const struct file_operations fops_info = {
1038 .open = wil_info_seq_open,
1039 .release = single_release,
1040 .read = seq_read,
1041 .llseek = seq_lseek,
1042};
1043
3df2cd36 1044/*---------Station matrix------------*/
b4490f42
VK		 1045static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r)
1046{
1047 int i;
1048 u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size;
8fe59627 1049
b4490f42
VK		 1050 seq_printf(s, "0x%03x [", r->head_seq_num);
1051 for (i = 0; i < r->buf_size; i++) {
1052 if (i == index)
1053 seq_printf(s, "%c", r->reorder_buf[i] ? 'O' : '|');
1054 else
1055 seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_');
1056 }
d5b1c32f 1057 seq_printf(s, "] last drop 0x%03x\n", r->ssn_last_drop);
b4490f42 1058}
3df2cd36
VK		 1059
1060static int wil_sta_debugfs_show(struct seq_file *s, void *data)
1061{
1062 struct wil6210_priv *wil = s->private;
b4490f42 1063 int i, tid;
ec81b5ad 1064 unsigned long flags;
3df2cd36
VK		 1065
1066 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1067 struct wil_sta_info *p = &wil->sta[i];
1068 char *status = "unknown";
8fe59627 1069
3df2cd36
VK		 1070 switch (p->status) {
1071 case wil_sta_unused:
1072 status = "unused ";
1073 break;
1074 case wil_sta_conn_pending:
1075 status = "pending ";
1076 break;
1077 case wil_sta_connected:
1078 status = "connected";
1079 break;
1080 }
e58c9f70
VK		 1081 seq_printf(s, "[%d] %pM %s%s\n", i, p->addr, status,
1082 (p->data_port_open ? " data_port_open" : ""));
b4490f42
VK		 1083
1084 if (p->status == wil_sta_connected) {
ec81b5ad 1085 spin_lock_irqsave(&p->tid_rx_lock, flags);
b4490f42
VK		 1086 for (tid = 0; tid < WIL_STA_TID_NUM; tid++) {
1087 struct wil_tid_ampdu_rx *r = p->tid_rx[tid];
8fe59627 1088
b4490f42
VK		 1089 if (r) {
1090 seq_printf(s, "[%2d] ", tid);
1091 wil_print_rxtid(s, r);
1092 }
1093 }
ec81b5ad 1094 spin_unlock_irqrestore(&p->tid_rx_lock, flags);
b4490f42 1095 }
3df2cd36
VK		 1096 }
1097
1098 return 0;
1099}
1100
1101static int wil_sta_seq_open(struct inode *inode, struct file *file)
1102{
1103 return single_open(file, wil_sta_debugfs_show, inode->i_private);
1104}
1105
1106static const struct file_operations fops_sta = {
1107 .open = wil_sta_seq_open,
1108 .release = single_release,
1109 .read = seq_read,
1110 .llseek = seq_lseek,
1111};
1112
2be7d22f 1113/*----------------*/
b541d0a0
VK		 1114static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil,
1115 struct dentry *dbg)
1116{
1117 int i;
1118 char name[32];
1119
1120 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
1121 struct debugfs_blob_wrapper *blob = &wil->blobs[i];
1122 const struct fw_map *map = &fw_mapping[i];
1123
1124 if (!map->name)
1125 continue;
1126
1127 blob->data = (void * __force)wil->csr + HOSTADDR(map->host);
1128 blob->size = map->to - map->from;
1129 snprintf(name, sizeof(name), "blob_%s", map->name);
1130 wil_debugfs_create_ioblob(name, S_IRUGO, dbg, blob);
1131 }
1132}
1133
b7cde470
VK		 1134/* misc files */
1135static const struct {
1136 const char *name;
1137 umode_t mode;
1138 const struct file_operations *fops;
1139} dbg_files[] = {
1140 {"mbox", S_IRUGO, &fops_mbox},
1141 {"vrings", S_IRUGO, &fops_vring},
1142 {"stations", S_IRUGO, &fops_sta},
1143 {"desc", S_IRUGO, &fops_txdesc},
1144 {"bf", S_IRUGO, &fops_bf},
1145 {"ssid", S_IRUGO | S_IWUSR, &fops_ssid},
1146 {"mem_val", S_IRUGO, &fops_memread},
1147 {"reset", S_IWUSR, &fops_reset},
1148 {"rxon", S_IWUSR, &fops_rxon},
1149 {"tx_mgmt", S_IWUSR, &fops_txmgmt},
1150 {"wmi_send", S_IWUSR, &fops_wmi},
1151 {"temp", S_IRUGO, &fops_temp},
1152 {"freq", S_IRUGO, &fops_freq},
1153 {"link", S_IRUGO, &fops_link},
1154 {"info", S_IRUGO, &fops_info},
1155};
1156
1157static void wil6210_debugfs_init_files(struct wil6210_priv *wil,
1158 struct dentry *dbg)
1159{
1160 int i;
1161
1162 for (i = 0; i < ARRAY_SIZE(dbg_files); i++)
1163 debugfs_create_file(dbg_files[i].name, dbg_files[i].mode, dbg,
1164 wil, dbg_files[i].fops);
1165}
1166
1167/* interrupt control blocks */
1168static const struct {
1169 const char *name;
1170 u32 icr_off;
1171} dbg_icr[] = {
1172 {"USER_ICR", HOSTADDR(RGF_USER_USER_ICR)},
1173 {"DMA_EP_TX_ICR", HOSTADDR(RGF_DMA_EP_TX_ICR)},
1174 {"DMA_EP_RX_ICR", HOSTADDR(RGF_DMA_EP_RX_ICR)},
1175 {"DMA_EP_MISC_ICR", HOSTADDR(RGF_DMA_EP_MISC_ICR)},
1176};
1177
1178static void wil6210_debugfs_init_isr(struct wil6210_priv *wil,
1179 struct dentry *dbg)
1180{
1181 int i;
1182
1183 for (i = 0; i < ARRAY_SIZE(dbg_icr); i++)
1184 wil6210_debugfs_create_ISR(wil, dbg_icr[i].name, dbg,
1185 dbg_icr[i].icr_off);
1186}
1187
1188#define WIL_FIELD(name, mode, type) { __stringify(name), mode, \
1189 offsetof(struct wil6210_priv, name), type}
1190
1191/* fields in struct wil6210_priv */
1192static const struct dbg_off dbg_wil_off[] = {
1193 WIL_FIELD(secure_pcp, S_IRUGO | S_IWUSR, doff_u32),
1194 WIL_FIELD(status, S_IRUGO | S_IWUSR, doff_ulong),
1195 WIL_FIELD(fw_version, S_IRUGO, doff_u32),
1196 WIL_FIELD(hw_version, S_IRUGO, doff_x32),
1197 {},
1198};
1199
1200static const struct dbg_off dbg_wil_regs[] = {
1201 {"RGF_MAC_MTRL_COUNTER_0", S_IRUGO, HOSTADDR(RGF_MAC_MTRL_COUNTER_0),
1202 doff_io32},
1203 {"RGF_USER_USAGE_1", S_IRUGO, HOSTADDR(RGF_USER_USAGE_1), doff_io32},
1204 {},
1205};
1206
1207/* static parameters */
1208static const struct dbg_off dbg_statics[] = {
1209 {"desc_index", S_IRUGO | S_IWUSR, (ulong)&dbg_txdesc_index, doff_u32},
1210 {"vring_index", S_IRUGO | S_IWUSR, (ulong)&dbg_vring_index, doff_u32},
1211 {"mem_addr", S_IRUGO | S_IWUSR, (ulong)&mem_addr, doff_u32},
1212 {},
1213};
1214
2be7d22f
VK		 1215int wil6210_debugfs_init(struct wil6210_priv *wil)
1216{
1217 struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
1218 wil_to_wiphy(wil)->debugfsdir);
1219
1220 if (IS_ERR_OR_NULL(dbg))
1221 return -ENODEV;
1222
b7cde470
VK		 1223 wil6210_debugfs_init_files(wil, dbg);
1224 wil6210_debugfs_init_isr(wil, dbg);
1225 wil6210_debugfs_init_blobs(wil, dbg);
1226 wil6210_debugfs_init_offset(wil, dbg, wil, dbg_wil_off);
1227 wil6210_debugfs_init_offset(wil, dbg, (void * __force)wil->csr,
1228 dbg_wil_regs);
1229 wil6210_debugfs_init_offset(wil, dbg, NULL, dbg_statics);
1230
2be7d22f 1231 wil6210_debugfs_create_pseudo_ISR(wil, dbg);
2be7d22f 1232
b7cde470 1233 wil6210_debugfs_create_ITR_CNT(wil, dbg);
2be7d22f
VK		 1234
1235 return 0;
1236}
1237
1238void wil6210_debugfs_remove(struct wil6210_priv *wil)
1239{
1240 debugfs_remove_recursive(wil->debug);
1241 wil->debug = NULL;
1242}
Linux kernel - Deliverables
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