drivers/net/wireless/ath/wil6210/debugfs.c

   1 /*
   2  * Copyright (c) 2012-2016 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 #include <linux/power_supply.h>
  23
  24 #include "wil6210.h"
  25 #include "wmi.h"
  26 #include "txrx.h"
  27 #include "pmc.h"
  28
  29 /* Nasty hack. Better have per device instances */
  30 static u32 mem_addr;
  31 static u32 dbg_txdesc_index;
  32 static u32 dbg_vring_index; /* 24+ for Rx, 0..23 for Tx */
  33 u32 vring_idle_trsh = 16; /* HW fetches up to 16 descriptors at once */
  34
  35 enum dbg_off_type {
  36         doff_u32 = 0,
  37         doff_x32 = 1,
  38         doff_ulong = 2,
  39         doff_io32 = 3,
  40 };
  41
  42 /* offset to "wil" */
  43 struct dbg_off {
  44         const char *name;
  45         umode_t mode;
  46         ulong off;
  47         enum dbg_off_type type;
  48 };
  49
  50 static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil,
  51                             const char *name, struct vring *vring,
  52                             char _s, char _h)
  53 {
  54         void __iomem *x = wmi_addr(wil, vring->hwtail);
  55         u32 v;
  56
  57         seq_printf(s, "VRING %s = {\n", name);
  58         seq_printf(s, "  pa     = %pad\n", &vring->pa);
  59         seq_printf(s, "  va     = 0x%p\n", vring->va);
  60         seq_printf(s, "  size   = %d\n", vring->size);
  61         seq_printf(s, "  swtail = %d\n", vring->swtail);
  62         seq_printf(s, "  swhead = %d\n", vring->swhead);
  63         seq_printf(s, "  hwtail = [0x%08x] -> ", vring->hwtail);
  64         if (x) {
  65                 v = readl(x);
  66                 seq_printf(s, "0x%08x = %d\n", v, v);
  67         } else {
  68                 seq_puts(s, "???\n");
  69         }
  70
  71         if (vring->va && (vring->size <= (1 << WIL_RING_SIZE_ORDER_MAX))) {
  72                 uint i;
  73
  74                 for (i = 0; i < vring->size; i++) {
  75                         volatile struct vring_tx_desc *d = &vring->va[i].tx;
  76
  77                         if ((i % 128) == 0 && (i != 0))
  78                                 seq_puts(s, "\n");
  79                         seq_printf(s, "%c", (d->dma.status & BIT(0)) ?
  80                                         _s : (vring->ctx[i].skb ? _h : 'h'));
  81                 }
  82                 seq_puts(s, "\n");
  83         }
  84         seq_puts(s, "}\n");
  85 }
  86
  87 static int wil_vring_debugfs_show(struct seq_file *s, void *data)
  88 {
  89         uint i;
  90         struct wil6210_priv *wil = s->private;
  91
  92         wil_print_vring(s, wil, "rx", &wil->vring_rx, 'S', '_');
  93
  94         for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
  95                 struct vring *vring = &wil->vring_tx[i];
  96                 struct vring_tx_data *txdata = &wil->vring_tx_data[i];
  97
  98                 if (vring->va) {
  99                         int cid = wil->vring2cid_tid[i][0];
 100                         int tid = wil->vring2cid_tid[i][1];
 101                         u32 swhead = vring->swhead;
 102                         u32 swtail = vring->swtail;
 103                         int used = (vring->size + swhead - swtail)
 104                                    % vring->size;
 105                         int avail = vring->size - used - 1;
 106                         char name[10];
 107                         char sidle[10];
 108                         /* performance monitoring */
 109                         cycles_t now = get_cycles();
 110                         uint64_t idle = txdata->idle * 100;
 111                         uint64_t total = now - txdata->begin;
 112
 113                         if (total != 0) {
 114                                 do_div(idle, total);
 115                                 snprintf(sidle, sizeof(sidle), "%3d%%",
 116                                          (int)idle);
 117                         } else {
 118                                 snprintf(sidle, sizeof(sidle), "N/A");
 119                         }
 120                         txdata->begin = now;
 121                         txdata->idle = 0ULL;
 122
 123                         snprintf(name, sizeof(name), "tx_%2d", i);
 124
 125                         if (cid < WIL6210_MAX_CID)
 126                                 seq_printf(s,
 127                                            "\n%pM CID %d TID %d 1x%s BACK([%u] %u TU A%s) [%3d|%3d] idle %s\n",
 128                                            wil->sta[cid].addr, cid, tid,
 129                                            txdata->dot1x_open ? "+" : "-",
 130                                            txdata->agg_wsize,
 131                                            txdata->agg_timeout,
 132                                            txdata->agg_amsdu ? "+" : "-",
 133                                            used, avail, sidle);
 134                         else
 135                                 seq_printf(s,
 136                                            "\nBroadcast 1x%s [%3d|%3d] idle %s\n",
 137                                            txdata->dot1x_open ? "+" : "-",
 138                                            used, avail, sidle);
 139
 140                         wil_print_vring(s, wil, name, vring, '_', 'H');
 141                 }
 142         }
 143
 144         return 0;
 145 }
 146
 147 static int wil_vring_seq_open(struct inode *inode, struct file *file)
 148 {
 149         return single_open(file, wil_vring_debugfs_show, inode->i_private);
 150 }
 151
 152 static const struct file_operations fops_vring = {
 153         .open           = wil_vring_seq_open,
 154         .release        = single_release,
 155         .read           = seq_read,
 156         .llseek         = seq_lseek,
 157 };
 158
 159 static void wil_seq_hexdump(struct seq_file *s, void *p, int len,
 160                             const char *prefix)
 161 {
 162         seq_hex_dump(s, prefix, DUMP_PREFIX_NONE, 16, 1, p, len, false);
 163 }
 164
 165 static void wil_print_ring(struct seq_file *s, const char *prefix,
 166                            void __iomem *off)
 167 {
 168         struct wil6210_priv *wil = s->private;
 169         struct wil6210_mbox_ring r;
 170         int rsize;
 171         uint i;
 172
 173         wil_memcpy_fromio_32(&r, off, sizeof(r));
 174         wil_mbox_ring_le2cpus(&r);
 175         /*
 176          * we just read memory block from NIC. This memory may be
 177          * garbage. Check validity before using it.
 178          */
 179         rsize = r.size / sizeof(struct wil6210_mbox_ring_desc);
 180
 181         seq_printf(s, "ring %s = {\n", prefix);
 182         seq_printf(s, "  base = 0x%08x\n", r.base);
 183         seq_printf(s, "  size = 0x%04x bytes -> %d entries\n", r.size, rsize);
 184         seq_printf(s, "  tail = 0x%08x\n", r.tail);
 185         seq_printf(s, "  head = 0x%08x\n", r.head);
 186         seq_printf(s, "  entry size = %d\n", r.entry_size);
 187
 188         if (r.size % sizeof(struct wil6210_mbox_ring_desc)) {
 189                 seq_printf(s, "  ??? size is not multiple of %zd, garbage?\n",
 190                            sizeof(struct wil6210_mbox_ring_desc));
 191                 goto out;
 192         }
 193
 194         if (!wmi_addr(wil, r.base) ||
 195             !wmi_addr(wil, r.tail) ||
 196             !wmi_addr(wil, r.head)) {
 197                 seq_puts(s, "  ??? pointers are garbage?\n");
 198                 goto out;
 199         }
 200
 201         for (i = 0; i < rsize; i++) {
 202                 struct wil6210_mbox_ring_desc d;
 203                 struct wil6210_mbox_hdr hdr;
 204                 size_t delta = i * sizeof(d);
 205                 void __iomem *x = wil->csr + HOSTADDR(r.base) + delta;
 206
 207                 wil_memcpy_fromio_32(&d, x, sizeof(d));
 208
 209                 seq_printf(s, "  [%2x] %s %s%s 0x%08x", i,
 210                            d.sync ? "F" : "E",
 211                            (r.tail - r.base == delta) ? "t" : " ",
 212                            (r.head - r.base == delta) ? "h" : " ",
 213                            le32_to_cpu(d.addr));
 214                 if (0 == wmi_read_hdr(wil, d.addr, &hdr)) {
 215                         u16 len = le16_to_cpu(hdr.len);
 216
 217                         seq_printf(s, " -> %04x %04x %04x %02x\n",
 218                                    le16_to_cpu(hdr.seq), len,
 219                                    le16_to_cpu(hdr.type), hdr.flags);
 220                         if (len <= MAX_MBOXITEM_SIZE) {
 221                                 unsigned char databuf[MAX_MBOXITEM_SIZE];
 222                                 void __iomem *src = wmi_buffer(wil, d.addr) +
 223                                         sizeof(struct wil6210_mbox_hdr);
 224                                 /*
 225                                  * No need to check @src for validity -
 226                                  * we already validated @d.addr while
 227                                  * reading header
 228                                  */
 229                                 wil_memcpy_fromio_32(databuf, src, len);
 230                                 wil_seq_hexdump(s, databuf, len, "      : ");
 231                         }
 232                 } else {
 233                         seq_puts(s, "\n");
 234                 }
 235         }
 236  out:
 237         seq_puts(s, "}\n");
 238 }
 239
 240 static int wil_mbox_debugfs_show(struct seq_file *s, void *data)
 241 {
 242         struct wil6210_priv *wil = s->private;
 243
 244         wil_print_ring(s, "tx", wil->csr + HOST_MBOX +
 245                        offsetof(struct wil6210_mbox_ctl, tx));
 246         wil_print_ring(s, "rx", wil->csr + HOST_MBOX +
 247                        offsetof(struct wil6210_mbox_ctl, rx));
 248
 249         return 0;
 250 }
 251
 252 static int wil_mbox_seq_open(struct inode *inode, struct file *file)
 253 {
 254         return single_open(file, wil_mbox_debugfs_show, inode->i_private);
 255 }
 256
 257 static const struct file_operations fops_mbox = {
 258         .open           = wil_mbox_seq_open,
 259         .release        = single_release,
 260         .read           = seq_read,
 261         .llseek         = seq_lseek,
 262 };
 263
 264 static int wil_debugfs_iomem_x32_set(void *data, u64 val)
 265 {
 266         writel(val, (void __iomem *)data);
 267         wmb(); /* make sure write propagated to HW */
 268
 269         return 0;
 270 }
 271
 272 static int wil_debugfs_iomem_x32_get(void *data, u64 *val)
 273 {
 274         *val = readl((void __iomem *)data);
 275
 276         return 0;
 277 }
 278
 279 DEFINE_SIMPLE_ATTRIBUTE(fops_iomem_x32, wil_debugfs_iomem_x32_get,
 280                         wil_debugfs_iomem_x32_set, "0x%08llx\n");
 281
 282 static struct dentry *wil_debugfs_create_iomem_x32(const char *name,
 283                                                    umode_t mode,
 284                                                    struct dentry *parent,
 285                                                    void *value)
 286 {
 287         return debugfs_create_file(name, mode, parent, value,
 288                                    &fops_iomem_x32);
 289 }
 290
 291 static int wil_debugfs_ulong_set(void *data, u64 val)
 292 {
 293         *(ulong *)data = val;
 294         return 0;
 295 }
 296
 297 static int wil_debugfs_ulong_get(void *data, u64 *val)
 298 {
 299         *val = *(ulong *)data;
 300         return 0;
 301 }
 302
 303 DEFINE_SIMPLE_ATTRIBUTE(wil_fops_ulong, wil_debugfs_ulong_get,
 304                         wil_debugfs_ulong_set, "0x%llx\n");
 305
 306 static struct dentry *wil_debugfs_create_ulong(const char *name, umode_t mode,
 307                                                struct dentry *parent,
 308                                                ulong *value)
 309 {
 310         return debugfs_create_file(name, mode, parent, value, &wil_fops_ulong);
 311 }
 312
 313 /**
 314  * wil6210_debugfs_init_offset - create set of debugfs files
 315  * @wil - driver's context, used for printing
 316  * @dbg - directory on the debugfs, where files will be created
 317  * @base - base address used in address calculation
 318  * @tbl - table with file descriptions. Should be terminated with empty element.
 319  *
 320  * Creates files accordingly to the @tbl.
 321  */
 322 static void wil6210_debugfs_init_offset(struct wil6210_priv *wil,
 323                                         struct dentry *dbg, void *base,
 324                                         const struct dbg_off * const tbl)
 325 {
 326         int i;
 327
 328         for (i = 0; tbl[i].name; i++) {
 329                 struct dentry *f;
 330
 331                 switch (tbl[i].type) {
 332                 case doff_u32:
 333                         f = debugfs_create_u32(tbl[i].name, tbl[i].mode, dbg,
 334                                                base + tbl[i].off);
 335                         break;
 336                 case doff_x32:
 337                         f = debugfs_create_x32(tbl[i].name, tbl[i].mode, dbg,
 338                                                base + tbl[i].off);
 339                         break;
 340                 case doff_ulong:
 341                         f = wil_debugfs_create_ulong(tbl[i].name, tbl[i].mode,
 342                                                      dbg, base + tbl[i].off);
 343                         break;
 344                 case doff_io32:
 345                         f = wil_debugfs_create_iomem_x32(tbl[i].name,
 346                                                          tbl[i].mode, dbg,
 347                                                          base + tbl[i].off);
 348                         break;
 349                 default:
 350                         f = ERR_PTR(-EINVAL);
 351                 }
 352                 if (IS_ERR_OR_NULL(f))
 353                         wil_err(wil, "Create file \"%s\": err %ld\n",
 354                                 tbl[i].name, PTR_ERR(f));
 355         }
 356 }
 357
 358 static const struct dbg_off isr_off[] = {
 359         {"ICC", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICC), doff_io32},
 360         {"ICR", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICR), doff_io32},
 361         {"ICM", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICM), doff_io32},
 362         {"ICS",           S_IWUSR, offsetof(struct RGF_ICR, ICS), doff_io32},
 363         {"IMV", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, IMV), doff_io32},
 364         {"IMS",           S_IWUSR, offsetof(struct RGF_ICR, IMS), doff_io32},
 365         {"IMC",           S_IWUSR, offsetof(struct RGF_ICR, IMC), doff_io32},
 366         {},
 367 };
 368
 369 static int wil6210_debugfs_create_ISR(struct wil6210_priv *wil,
 370                                       const char *name,
 371                                       struct dentry *parent, u32 off)
 372 {
 373         struct dentry *d = debugfs_create_dir(name, parent);
 374
 375         if (IS_ERR_OR_NULL(d))
 376                 return -ENODEV;
 377
 378         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr + off,
 379                                     isr_off);
 380
 381         return 0;
 382 }
 383
 384 static const struct dbg_off pseudo_isr_off[] = {
 385         {"CAUSE",   S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE), doff_io32},
 386         {"MASK_SW", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW), doff_io32},
 387         {"MASK_FW", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_FW), doff_io32},
 388         {},
 389 };
 390
 391 static int wil6210_debugfs_create_pseudo_ISR(struct wil6210_priv *wil,
 392                                              struct dentry *parent)
 393 {
 394         struct dentry *d = debugfs_create_dir("PSEUDO_ISR", parent);
 395
 396         if (IS_ERR_OR_NULL(d))
 397                 return -ENODEV;
 398
 399         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
 400                                     pseudo_isr_off);
 401
 402         return 0;
 403 }
 404
 405 static const struct dbg_off lgc_itr_cnt_off[] = {
 406         {"TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_TRSH), doff_io32},
 407         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_DATA), doff_io32},
 408         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_CRL), doff_io32},
 409         {},
 410 };
 411
 412 static const struct dbg_off tx_itr_cnt_off[] = {
 413         {"TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_TRSH),
 414          doff_io32},
 415         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_DATA),
 416          doff_io32},
 417         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_CTL),
 418          doff_io32},
 419         {"IDL_TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_TRSH),
 420          doff_io32},
 421         {"IDL_DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_DATA),
 422          doff_io32},
 423         {"IDL_CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_CTL),
 424          doff_io32},
 425         {},
 426 };
 427
 428 static const struct dbg_off rx_itr_cnt_off[] = {
 429         {"TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_TRSH),
 430          doff_io32},
 431         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_DATA),
 432          doff_io32},
 433         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_CTL),
 434          doff_io32},
 435         {"IDL_TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_TRSH),
 436          doff_io32},
 437         {"IDL_DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_DATA),
 438          doff_io32},
 439         {"IDL_CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_CTL),
 440          doff_io32},
 441         {},
 442 };
 443
 444 static int wil6210_debugfs_create_ITR_CNT(struct wil6210_priv *wil,
 445                                           struct dentry *parent)
 446 {
 447         struct dentry *d, *dtx, *drx;
 448
 449         d = debugfs_create_dir("ITR_CNT", parent);
 450         if (IS_ERR_OR_NULL(d))
 451                 return -ENODEV;
 452
 453         dtx = debugfs_create_dir("TX", d);
 454         drx = debugfs_create_dir("RX", d);
 455         if (IS_ERR_OR_NULL(dtx) || IS_ERR_OR_NULL(drx))
 456                 return -ENODEV;
 457
 458         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
 459                                     lgc_itr_cnt_off);
 460
 461         wil6210_debugfs_init_offset(wil, dtx, (void * __force)wil->csr,
 462                                     tx_itr_cnt_off);
 463
 464         wil6210_debugfs_init_offset(wil, drx, (void * __force)wil->csr,
 465                                     rx_itr_cnt_off);
 466         return 0;
 467 }
 468
 469 static int wil_memread_debugfs_show(struct seq_file *s, void *data)
 470 {
 471         struct wil6210_priv *wil = s->private;
 472         void __iomem *a = wmi_buffer(wil, cpu_to_le32(mem_addr));
 473
 474         if (a)
 475                 seq_printf(s, "[0x%08x] = 0x%08x\n", mem_addr, readl(a));
 476         else
 477                 seq_printf(s, "[0x%08x] = INVALID\n", mem_addr);
 478
 479         return 0;
 480 }
 481
 482 static int wil_memread_seq_open(struct inode *inode, struct file *file)
 483 {
 484         return single_open(file, wil_memread_debugfs_show, inode->i_private);
 485 }
 486
 487 static const struct file_operations fops_memread = {
 488         .open           = wil_memread_seq_open,
 489         .release        = single_release,
 490         .read           = seq_read,
 491         .llseek         = seq_lseek,
 492 };
 493
 494 static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf,
 495                                     size_t count, loff_t *ppos)
 496 {
 497         enum { max_count = 4096 };
 498         struct debugfs_blob_wrapper *blob = file->private_data;
 499         loff_t pos = *ppos;
 500         size_t available = blob->size;
 501         void *buf;
 502         size_t ret;
 503
 504         if (pos < 0)
 505                 return -EINVAL;
 506
 507         if (pos >= available || !count)
 508                 return 0;
 509
 510         if (count > available - pos)
 511                 count = available - pos;
 512         if (count > max_count)
 513                 count = max_count;
 514
 515         buf = kmalloc(count, GFP_KERNEL);
 516         if (!buf)
 517                 return -ENOMEM;
 518
 519         wil_memcpy_fromio_32(buf, (const volatile void __iomem *)blob->data +
 520                              pos, count);
 521
 522         ret = copy_to_user(user_buf, buf, count);
 523         kfree(buf);
 524         if (ret == count)
 525                 return -EFAULT;
 526
 527         count -= ret;
 528         *ppos = pos + count;
 529
 530         return count;
 531 }
 532
 533 static const struct file_operations fops_ioblob = {
 534         .read =         wil_read_file_ioblob,
 535         .open =         simple_open,
 536         .llseek =       default_llseek,
 537 };
 538
 539 static
 540 struct dentry *wil_debugfs_create_ioblob(const char *name,
 541                                          umode_t mode,
 542                                          struct dentry *parent,
 543                                          struct debugfs_blob_wrapper *blob)
 544 {
 545         return debugfs_create_file(name, mode, parent, blob, &fops_ioblob);
 546 }
 547
 548 /*---reset---*/
 549 static ssize_t wil_write_file_reset(struct file *file, const char __user *buf,
 550                                     size_t len, loff_t *ppos)
 551 {
 552         struct wil6210_priv *wil = file->private_data;
 553         struct net_device *ndev = wil_to_ndev(wil);
 554
 555         /**
 556          * BUG:
 557          * this code does NOT sync device state with the rest of system
 558          * use with care, debug only!!!
 559          */
 560         rtnl_lock();
 561         dev_close(ndev);
 562         ndev->flags &= ~IFF_UP;
 563         rtnl_unlock();
 564         wil_reset(wil, true);
 565
 566         return len;
 567 }
 568
 569 static const struct file_operations fops_reset = {
 570         .write = wil_write_file_reset,
 571         .open  = simple_open,
 572 };
 573
 574 /*---write channel 1..4 to rxon for it, 0 to rxoff---*/
 575 static ssize_t wil_write_file_rxon(struct file *file, const char __user *buf,
 576                                    size_t len, loff_t *ppos)
 577 {
 578         struct wil6210_priv *wil = file->private_data;
 579         int rc;
 580         long channel;
 581         bool on;
 582
 583         char *kbuf = memdup_user_nul(buf, len);
 584
 585         if (IS_ERR(kbuf))
 586                 return PTR_ERR(kbuf);
 587         rc = kstrtol(kbuf, 0, &channel);
 588         kfree(kbuf);
 589         if (rc)
 590                 return rc;
 591
 592         if ((channel < 0) || (channel > 4)) {
 593                 wil_err(wil, "Invalid channel %ld\n", channel);
 594                 return -EINVAL;
 595         }
 596         on = !!channel;
 597
 598         if (on) {
 599                 rc = wmi_set_channel(wil, (int)channel);
 600                 if (rc)
 601                         return rc;
 602         }
 603
 604         rc = wmi_rxon(wil, on);
 605         if (rc)
 606                 return rc;
 607
 608         return len;
 609 }
 610
 611 static const struct file_operations fops_rxon = {
 612         .write = wil_write_file_rxon,
 613         .open  = simple_open,
 614 };
 615
 616 /* block ack control, write:
 617  * - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
 618  * - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
 619  * - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
 620  */
 621 static ssize_t wil_write_back(struct file *file, const char __user *buf,
 622                               size_t len, loff_t *ppos)
 623 {
 624         struct wil6210_priv *wil = file->private_data;
 625         int rc;
 626         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 627         char cmd[9];
 628         int p1, p2, p3;
 629
 630         if (!kbuf)
 631                 return -ENOMEM;
 632
 633         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 634         if (rc != len) {
 635                 kfree(kbuf);
 636                 return rc >= 0 ? -EIO : rc;
 637         }
 638
 639         kbuf[len] = '\0';
 640         rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
 641         kfree(kbuf);
 642
 643         if (rc < 0)
 644                 return rc;
 645         if (rc < 2)
 646                 return -EINVAL;
 647
 648         if (0 == strcmp(cmd, "add")) {
 649                 if (rc < 3) {
 650                         wil_err(wil, "BACK: add require at least 2 params\n");
 651                         return -EINVAL;
 652                 }
 653                 if (rc < 4)
 654                         p3 = 0;
 655                 wmi_addba(wil, p1, p2, p3);
 656         } else if (0 == strcmp(cmd, "del_tx")) {
 657                 if (rc < 3)
 658                         p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
 659                 wmi_delba_tx(wil, p1, p2);
 660         } else if (0 == strcmp(cmd, "del_rx")) {
 661                 if (rc < 3) {
 662                         wil_err(wil,
 663                                 "BACK: del_rx require at least 2 params\n");
 664                         return -EINVAL;
 665                 }
 666                 if (rc < 4)
 667                         p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
 668                 wmi_delba_rx(wil, mk_cidxtid(p1, p2), p3);
 669         } else {
 670                 wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
 671                 return -EINVAL;
 672         }
 673
 674         return len;
 675 }
 676
 677 static ssize_t wil_read_back(struct file *file, char __user *user_buf,
 678                              size_t count, loff_t *ppos)
 679 {
 680         static const char text[] = "block ack control, write:\n"
 681         " - \"add <ringid> <agg_size> <timeout>\" to trigger ADDBA\n"
 682         "If missing, <timeout> defaults to 0\n"
 683         " - \"del_tx <ringid> <reason>\" to trigger DELBA for Tx side\n"
 684         " - \"del_rx <CID> <TID> <reason>\" to trigger DELBA for Rx side\n"
 685         "If missing, <reason> set to \"STA_LEAVING\" (36)\n";
 686
 687         return simple_read_from_buffer(user_buf, count, ppos, text,
 688                                        sizeof(text));
 689 }
 690
 691 static const struct file_operations fops_back = {
 692         .read = wil_read_back,
 693         .write = wil_write_back,
 694         .open  = simple_open,
 695 };
 696
 697 /* pmc control, write:
 698  * - "alloc <num descriptors> <descriptor_size>" to allocate PMC
 699  * - "free" to release memory allocated for PMC
 700  */
 701 static ssize_t wil_write_pmccfg(struct file *file, const char __user *buf,
 702                                 size_t len, loff_t *ppos)
 703 {
 704         struct wil6210_priv *wil = file->private_data;
 705         int rc;
 706         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 707         char cmd[9];
 708         int num_descs, desc_size;
 709
 710         if (!kbuf)
 711                 return -ENOMEM;
 712
 713         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 714         if (rc != len) {
 715                 kfree(kbuf);
 716                 return rc >= 0 ? -EIO : rc;
 717         }
 718
 719         kbuf[len] = '\0';
 720         rc = sscanf(kbuf, "%8s %d %d", cmd, &num_descs, &desc_size);
 721         kfree(kbuf);
 722
 723         if (rc < 0)
 724                 return rc;
 725
 726         if (rc < 1) {
 727                 wil_err(wil, "pmccfg: no params given\n");
 728                 return -EINVAL;
 729         }
 730
 731         if (0 == strcmp(cmd, "alloc")) {
 732                 if (rc != 3) {
 733                         wil_err(wil, "pmccfg: alloc requires 2 params\n");
 734                         return -EINVAL;
 735                 }
 736                 wil_pmc_alloc(wil, num_descs, desc_size);
 737         } else if (0 == strcmp(cmd, "free")) {
 738                 if (rc != 1) {
 739                         wil_err(wil, "pmccfg: free does not have any params\n");
 740                         return -EINVAL;
 741                 }
 742                 wil_pmc_free(wil, true);
 743         } else {
 744                 wil_err(wil, "pmccfg: Unrecognized command \"%s\"\n", cmd);
 745                 return -EINVAL;
 746         }
 747
 748         return len;
 749 }
 750
 751 static ssize_t wil_read_pmccfg(struct file *file, char __user *user_buf,
 752                                size_t count, loff_t *ppos)
 753 {
 754         struct wil6210_priv *wil = file->private_data;
 755         char text[256];
 756         char help[] = "pmc control, write:\n"
 757         " - \"alloc <num descriptors> <descriptor_size>\" to allocate pmc\n"
 758         " - \"free\" to free memory allocated for pmc\n";
 759
 760         sprintf(text, "Last command status: %d\n\n%s",
 761                 wil_pmc_last_cmd_status(wil),
 762                 help);
 763
 764         return simple_read_from_buffer(user_buf, count, ppos, text,
 765                                        strlen(text) + 1);
 766 }
 767
 768 static const struct file_operations fops_pmccfg = {
 769         .read = wil_read_pmccfg,
 770         .write = wil_write_pmccfg,
 771         .open  = simple_open,
 772 };
 773
 774 static const struct file_operations fops_pmcdata = {
 775         .open           = simple_open,
 776         .read           = wil_pmc_read,
 777         .llseek         = wil_pmc_llseek,
 778 };
 779
 780 /*---tx_mgmt---*/
 781 /* Write mgmt frame to this file to send it */
 782 static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
 783                                      size_t len, loff_t *ppos)
 784 {
 785         struct wil6210_priv *wil = file->private_data;
 786         struct wiphy *wiphy = wil_to_wiphy(wil);
 787         struct wireless_dev *wdev = wil_to_wdev(wil);
 788         struct cfg80211_mgmt_tx_params params;
 789         int rc;
 790         void *frame = kmalloc(len, GFP_KERNEL);
 791
 792         if (!frame)
 793                 return -ENOMEM;
 794
 795         if (copy_from_user(frame, buf, len)) {
 796                 kfree(frame);
 797                 return -EIO;
 798         }
 799
 800         params.buf = frame;
 801         params.len = len;
 802         params.chan = wdev->preset_chandef.chan;
 803
 804         rc = wil_cfg80211_mgmt_tx(wiphy, wdev, &params, NULL);
 805
 806         kfree(frame);
 807         wil_info(wil, "%s() -> %d\n", __func__, rc);
 808
 809         return len;
 810 }
 811
 812 static const struct file_operations fops_txmgmt = {
 813         .write = wil_write_file_txmgmt,
 814         .open  = simple_open,
 815 };
 816
 817 /* Write WMI command (w/o mbox header) to this file to send it
 818  * WMI starts from wil6210_mbox_hdr_wmi header
 819  */
 820 static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
 821                                   size_t len, loff_t *ppos)
 822 {
 823         struct wil6210_priv *wil = file->private_data;
 824         struct wil6210_mbox_hdr_wmi *wmi;
 825         void *cmd;
 826         int cmdlen = len - sizeof(struct wil6210_mbox_hdr_wmi);
 827         u16 cmdid;
 828         int rc, rc1;
 829
 830         if (cmdlen <= 0)
 831                 return -EINVAL;
 832
 833         wmi = kmalloc(len, GFP_KERNEL);
 834         if (!wmi)
 835                 return -ENOMEM;
 836
 837         rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
 838         if (rc < 0) {
 839                 kfree(wmi);
 840                 return rc;
 841         }
 842
 843         cmd = &wmi[1];
 844         cmdid = le16_to_cpu(wmi->id);
 845
 846         rc1 = wmi_send(wil, cmdid, cmd, cmdlen);
 847         kfree(wmi);
 848
 849         wil_info(wil, "%s(0x%04x[%d]) -> %d\n", __func__, cmdid, cmdlen, rc1);
 850
 851         return rc;
 852 }
 853
 854 static const struct file_operations fops_wmi = {
 855         .write = wil_write_file_wmi,
 856         .open  = simple_open,
 857 };
 858
 859 static void wil_seq_print_skb(struct seq_file *s, struct sk_buff *skb)
 860 {
 861         int i = 0;
 862         int len = skb_headlen(skb);
 863         void *p = skb->data;
 864         int nr_frags = skb_shinfo(skb)->nr_frags;
 865
 866         seq_printf(s, "    len = %d\n", len);
 867         wil_seq_hexdump(s, p, len, "      : ");
 868
 869         if (nr_frags) {
 870                 seq_printf(s, "    nr_frags = %d\n", nr_frags);
 871                 for (i = 0; i < nr_frags; i++) {
 872                         const struct skb_frag_struct *frag =
 873                                         &skb_shinfo(skb)->frags[i];
 874
 875                         len = skb_frag_size(frag);
 876                         p = skb_frag_address_safe(frag);
 877                         seq_printf(s, "    [%2d] : len = %d\n", i, len);
 878                         wil_seq_hexdump(s, p, len, "      : ");
 879                 }
 880         }
 881 }
 882
 883 /*---------Tx/Rx descriptor------------*/
 884 static int wil_txdesc_debugfs_show(struct seq_file *s, void *data)
 885 {
 886         struct wil6210_priv *wil = s->private;
 887         struct vring *vring;
 888         bool tx = (dbg_vring_index < WIL6210_MAX_TX_RINGS);
 889
 890         vring = tx ? &wil->vring_tx[dbg_vring_index] : &wil->vring_rx;
 891
 892         if (!vring->va) {
 893                 if (tx)
 894                         seq_printf(s, "No Tx[%2d] VRING\n", dbg_vring_index);
 895                 else
 896                         seq_puts(s, "No Rx VRING\n");
 897                 return 0;
 898         }
 899
 900         if (dbg_txdesc_index < vring->size) {
 901                 /* use struct vring_tx_desc for Rx as well,
 902                  * only field used, .dma.length, is the same
 903                  */
 904                 volatile struct vring_tx_desc *d =
 905                                 &vring->va[dbg_txdesc_index].tx;
 906                 volatile u32 *u = (volatile u32 *)d;
 907                 struct sk_buff *skb = vring->ctx[dbg_txdesc_index].skb;
 908
 909                 if (tx)
 910                         seq_printf(s, "Tx[%2d][%3d] = {\n", dbg_vring_index,
 911                                    dbg_txdesc_index);
 912                 else
 913                         seq_printf(s, "Rx[%3d] = {\n", dbg_txdesc_index);
 914                 seq_printf(s, "  MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 915                            u[0], u[1], u[2], u[3]);
 916                 seq_printf(s, "  DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 917                            u[4], u[5], u[6], u[7]);
 918                 seq_printf(s, "  SKB = 0x%p\n", skb);
 919
 920                 if (skb) {
 921                         skb_get(skb);
 922                         wil_seq_print_skb(s, skb);
 923                         kfree_skb(skb);
 924                 }
 925                 seq_puts(s, "}\n");
 926         } else {
 927                 if (tx)
 928                         seq_printf(s, "[%2d] TxDesc index (%d) >= size (%d)\n",
 929                                    dbg_vring_index, dbg_txdesc_index,
 930                                    vring->size);
 931                 else
 932                         seq_printf(s, "RxDesc index (%d) >= size (%d)\n",
 933                                    dbg_txdesc_index, vring->size);
 934         }
 935
 936         return 0;
 937 }
 938
 939 static int wil_txdesc_seq_open(struct inode *inode, struct file *file)
 940 {
 941         return single_open(file, wil_txdesc_debugfs_show, inode->i_private);
 942 }
 943
 944 static const struct file_operations fops_txdesc = {
 945         .open           = wil_txdesc_seq_open,
 946         .release        = single_release,
 947         .read           = seq_read,
 948         .llseek         = seq_lseek,
 949 };
 950
 951 /*---------beamforming------------*/
 952 static char *wil_bfstatus_str(u32 status)
 953 {
 954         switch (status) {
 955         case 0:
 956                 return "Failed";
 957         case 1:
 958                 return "OK";
 959         case 2:
 960                 return "Retrying";
 961         default:
 962                 return "??";
 963         }
 964 }
 965
 966 static bool is_all_zeros(void * const x_, size_t sz)
 967 {
 968         /* if reply is all-0, ignore this CID */
 969         u32 *x = x_;
 970         int n;
 971
 972         for (n = 0; n < sz / sizeof(*x); n++)
 973                 if (x[n])
 974                         return false;
 975
 976         return true;
 977 }
 978
 979 static int wil_bf_debugfs_show(struct seq_file *s, void *data)
 980 {
 981         int rc;
 982         int i;
 983         struct wil6210_priv *wil = s->private;
 984         struct wmi_notify_req_cmd cmd = {
 985                 .interval_usec = 0,
 986         };
 987         struct {
 988                 struct wil6210_mbox_hdr_wmi wmi;
 989                 struct wmi_notify_req_done_event evt;
 990         } __packed reply;
 991
 992         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
 993                 u32 status;
 994
 995                 cmd.cid = i;
 996                 rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
 997                               WMI_NOTIFY_REQ_DONE_EVENTID, &reply,
 998                               sizeof(reply), 20);
 999                 /* if reply is all-0, ignore this CID */
1000                 if (rc || is_all_zeros(&reply.evt, sizeof(reply.evt)))
1001                         continue;
1002
1003                 status = le32_to_cpu(reply.evt.status);
1004                 seq_printf(s, "CID %d {\n"
1005                            "  TSF = 0x%016llx\n"
1006                            "  TxMCS = %2d TxTpt = %4d\n"
1007                            "  SQI = %4d\n"
1008                            "  Status = 0x%08x %s\n"
1009                            "  Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n"
1010                            "  Goodput(rx:tx) %4d:%4d\n"
1011                            "}\n",
1012                            i,
1013                            le64_to_cpu(reply.evt.tsf),
1014                            le16_to_cpu(reply.evt.bf_mcs),
1015                            le32_to_cpu(reply.evt.tx_tpt),
1016                            reply.evt.sqi,
1017                            status, wil_bfstatus_str(status),
1018                            le16_to_cpu(reply.evt.my_rx_sector),
1019                            le16_to_cpu(reply.evt.my_tx_sector),
1020                            le16_to_cpu(reply.evt.other_rx_sector),
1021                            le16_to_cpu(reply.evt.other_tx_sector),
1022                            le32_to_cpu(reply.evt.rx_goodput),
1023                            le32_to_cpu(reply.evt.tx_goodput));
1024         }
1025         return 0;
1026 }
1027
1028 static int wil_bf_seq_open(struct inode *inode, struct file *file)
1029 {
1030         return single_open(file, wil_bf_debugfs_show, inode->i_private);
1031 }
1032
1033 static const struct file_operations fops_bf = {
1034         .open           = wil_bf_seq_open,
1035         .release        = single_release,
1036         .read           = seq_read,
1037         .llseek         = seq_lseek,
1038 };
1039
1040 /*---------SSID------------*/
1041 static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
1042                                   size_t count, loff_t *ppos)
1043 {
1044         struct wil6210_priv *wil = file->private_data;
1045         struct wireless_dev *wdev = wil_to_wdev(wil);
1046
1047         return simple_read_from_buffer(user_buf, count, ppos,
1048                                        wdev->ssid, wdev->ssid_len);
1049 }
1050
1051 static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
1052                                    size_t count, loff_t *ppos)
1053 {
1054         struct wil6210_priv *wil = file->private_data;
1055         struct wireless_dev *wdev = wil_to_wdev(wil);
1056         struct net_device *ndev = wil_to_ndev(wil);
1057
1058         if (*ppos != 0) {
1059                 wil_err(wil, "Unable to set SSID substring from [%d]\n",
1060                         (int)*ppos);
1061                 return -EINVAL;
1062         }
1063
1064         if (count > sizeof(wdev->ssid)) {
1065                 wil_err(wil, "SSID too long, len = %d\n", (int)count);
1066                 return -EINVAL;
1067         }
1068         if (netif_running(ndev)) {
1069                 wil_err(wil, "Unable to change SSID on running interface\n");
1070                 return -EINVAL;
1071         }
1072
1073         wdev->ssid_len = count;
1074         return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
1075                                       buf, count);
1076 }
1077
1078 static const struct file_operations fops_ssid = {
1079         .read = wil_read_file_ssid,
1080         .write = wil_write_file_ssid,
1081         .open  = simple_open,
1082 };
1083
1084 /*---------temp------------*/
1085 static void print_temp(struct seq_file *s, const char *prefix, u32 t)
1086 {
1087         switch (t) {
1088         case 0:
1089         case ~(u32)0:
1090                 seq_printf(s, "%s N/A\n", prefix);
1091         break;
1092         default:
1093                 seq_printf(s, "%s %d.%03d\n", prefix, t / 1000, t % 1000);
1094                 break;
1095         }
1096 }
1097
1098 static int wil_temp_debugfs_show(struct seq_file *s, void *data)
1099 {
1100         struct wil6210_priv *wil = s->private;
1101         u32 t_m, t_r;
1102         int rc = wmi_get_temperature(wil, &t_m, &t_r);
1103
1104         if (rc) {
1105                 seq_puts(s, "Failed\n");
1106                 return 0;
1107         }
1108
1109         print_temp(s, "T_mac   =", t_m);
1110         print_temp(s, "T_radio =", t_r);
1111
1112         return 0;
1113 }
1114
1115 static int wil_temp_seq_open(struct inode *inode, struct file *file)
1116 {
1117         return single_open(file, wil_temp_debugfs_show, inode->i_private);
1118 }
1119
1120 static const struct file_operations fops_temp = {
1121         .open           = wil_temp_seq_open,
1122         .release        = single_release,
1123         .read           = seq_read,
1124         .llseek         = seq_lseek,
1125 };
1126
1127 /*---------freq------------*/
1128 static int wil_freq_debugfs_show(struct seq_file *s, void *data)
1129 {
1130         struct wil6210_priv *wil = s->private;
1131         struct wireless_dev *wdev = wil_to_wdev(wil);
1132         u16 freq = wdev->chandef.chan ? wdev->chandef.chan->center_freq : 0;
1133
1134         seq_printf(s, "Freq = %d\n", freq);
1135
1136         return 0;
1137 }
1138
1139 static int wil_freq_seq_open(struct inode *inode, struct file *file)
1140 {
1141         return single_open(file, wil_freq_debugfs_show, inode->i_private);
1142 }
1143
1144 static const struct file_operations fops_freq = {
1145         .open           = wil_freq_seq_open,
1146         .release        = single_release,
1147         .read           = seq_read,
1148         .llseek         = seq_lseek,
1149 };
1150
1151 /*---------link------------*/
1152 static int wil_link_debugfs_show(struct seq_file *s, void *data)
1153 {
1154         struct wil6210_priv *wil = s->private;
1155         struct station_info sinfo;
1156         int i, rc;
1157
1158         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1159                 struct wil_sta_info *p = &wil->sta[i];
1160                 char *status = "unknown";
1161
1162                 switch (p->status) {
1163                 case wil_sta_unused:
1164                         status = "unused   ";
1165                         break;
1166                 case wil_sta_conn_pending:
1167                         status = "pending  ";
1168                         break;
1169                 case wil_sta_connected:
1170                         status = "connected";
1171                         break;
1172                 }
1173                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1174
1175                 if (p->status == wil_sta_connected) {
1176                         rc = wil_cid_fill_sinfo(wil, i, &sinfo);
1177                         if (rc)
1178                                 return rc;
1179
1180                         seq_printf(s, "  Tx_mcs = %d\n", sinfo.txrate.mcs);
1181                         seq_printf(s, "  Rx_mcs = %d\n", sinfo.rxrate.mcs);
1182                         seq_printf(s, "  SQ     = %d\n", sinfo.signal);
1183                 }
1184         }
1185
1186         return 0;
1187 }
1188
1189 static int wil_link_seq_open(struct inode *inode, struct file *file)
1190 {
1191         return single_open(file, wil_link_debugfs_show, inode->i_private);
1192 }
1193
1194 static const struct file_operations fops_link = {
1195         .open           = wil_link_seq_open,
1196         .release        = single_release,
1197         .read           = seq_read,
1198         .llseek         = seq_lseek,
1199 };
1200
1201 /*---------info------------*/
1202 static int wil_info_debugfs_show(struct seq_file *s, void *data)
1203 {
1204         struct wil6210_priv *wil = s->private;
1205         struct net_device *ndev = wil_to_ndev(wil);
1206         int is_ac = power_supply_is_system_supplied();
1207         int rx = atomic_xchg(&wil->isr_count_rx, 0);
1208         int tx = atomic_xchg(&wil->isr_count_tx, 0);
1209         static ulong rxf_old, txf_old;
1210         ulong rxf = ndev->stats.rx_packets;
1211         ulong txf = ndev->stats.tx_packets;
1212         unsigned int i;
1213
1214         /* >0 : AC; 0 : battery; <0 : error */
1215         seq_printf(s, "AC powered : %d\n", is_ac);
1216         seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);
1217         seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);
1218         rxf_old = rxf;
1219         txf_old = txf;
1220
1221 #define CHECK_QSTATE(x) (state & BIT(__QUEUE_STATE_ ## x)) ? \
1222         " " __stringify(x) : ""
1223
1224         for (i = 0; i < ndev->num_tx_queues; i++) {
1225                 struct netdev_queue *txq = netdev_get_tx_queue(ndev, i);
1226                 unsigned long state = txq->state;
1227
1228                 seq_printf(s, "Tx queue[%i] state : 0x%lx%s%s%s\n", i, state,
1229                            CHECK_QSTATE(DRV_XOFF),
1230                            CHECK_QSTATE(STACK_XOFF),
1231                            CHECK_QSTATE(FROZEN)
1232                           );
1233         }
1234 #undef CHECK_QSTATE
1235         return 0;
1236 }
1237
1238 static int wil_info_seq_open(struct inode *inode, struct file *file)
1239 {
1240         return single_open(file, wil_info_debugfs_show, inode->i_private);
1241 }
1242
1243 static const struct file_operations fops_info = {
1244         .open           = wil_info_seq_open,
1245         .release        = single_release,
1246         .read           = seq_read,
1247         .llseek         = seq_lseek,
1248 };
1249
1250 /*---------recovery------------*/
1251 /* mode = [manual|auto]
1252  * state = [idle|pending|running]
1253  */
1254 static ssize_t wil_read_file_recovery(struct file *file, char __user *user_buf,
1255                                       size_t count, loff_t *ppos)
1256 {
1257         struct wil6210_priv *wil = file->private_data;
1258         char buf[80];
1259         int n;
1260         static const char * const sstate[] = {"idle", "pending", "running"};
1261
1262         n = snprintf(buf, sizeof(buf), "mode = %s\nstate = %s\n",
1263                      no_fw_recovery ? "manual" : "auto",
1264                      sstate[wil->recovery_state]);
1265
1266         n = min_t(int, n, sizeof(buf));
1267
1268         return simple_read_from_buffer(user_buf, count, ppos,
1269                                        buf, n);
1270 }
1271
1272 static ssize_t wil_write_file_recovery(struct file *file,
1273                                        const char __user *buf_,
1274                                        size_t count, loff_t *ppos)
1275 {
1276         struct wil6210_priv *wil = file->private_data;
1277         static const char run_command[] = "run";
1278         char buf[sizeof(run_command) + 1]; /* to detect "runx" */
1279         ssize_t rc;
1280
1281         if (wil->recovery_state != fw_recovery_pending) {
1282                 wil_err(wil, "No recovery pending\n");
1283                 return -EINVAL;
1284         }
1285
1286         if (*ppos != 0) {
1287                 wil_err(wil, "Offset [%d]\n", (int)*ppos);
1288                 return -EINVAL;
1289         }
1290
1291         if (count > sizeof(buf)) {
1292                 wil_err(wil, "Input too long, len = %d\n", (int)count);
1293                 return -EINVAL;
1294         }
1295
1296         rc = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, buf_, count);
1297         if (rc < 0)
1298                 return rc;
1299
1300         buf[rc] = '\0';
1301         if (0 == strcmp(buf, run_command))
1302                 wil_set_recovery_state(wil, fw_recovery_running);
1303         else
1304                 wil_err(wil, "Bad recovery command \"%s\"\n", buf);
1305
1306         return rc;
1307 }
1308
1309 static const struct file_operations fops_recovery = {
1310         .read = wil_read_file_recovery,
1311         .write = wil_write_file_recovery,
1312         .open  = simple_open,
1313 };
1314
1315 /*---------Station matrix------------*/
1316 static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r)
1317 {
1318         int i;
1319         u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size;
1320         unsigned long long drop_dup = r->drop_dup, drop_old = r->drop_old;
1321
1322         seq_printf(s, "([%2d] %3d TU) 0x%03x [", r->buf_size, r->timeout,
1323                    r->head_seq_num);
1324         for (i = 0; i < r->buf_size; i++) {
1325                 if (i == index)
1326                         seq_printf(s, "%c", r->reorder_buf[i] ? 'O' : '|');
1327                 else
1328                         seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_');
1329         }
1330         seq_printf(s,
1331                    "] total %llu drop %llu (dup %llu + old %llu) last 0x%03x\n",
1332                    r->total, drop_dup + drop_old, drop_dup, drop_old,
1333                    r->ssn_last_drop);
1334 }
1335
1336 static int wil_sta_debugfs_show(struct seq_file *s, void *data)
1337 __acquires(&p->tid_rx_lock) __releases(&p->tid_rx_lock)
1338 {
1339         struct wil6210_priv *wil = s->private;
1340         int i, tid, mcs;
1341
1342         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1343                 struct wil_sta_info *p = &wil->sta[i];
1344                 char *status = "unknown";
1345
1346                 switch (p->status) {
1347                 case wil_sta_unused:
1348                         status = "unused   ";
1349                         break;
1350                 case wil_sta_conn_pending:
1351                         status = "pending  ";
1352                         break;
1353                 case wil_sta_connected:
1354                         status = "connected";
1355                         break;
1356                 }
1357                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1358
1359                 if (p->status == wil_sta_connected) {
1360                         spin_lock_bh(&p->tid_rx_lock);
1361                         for (tid = 0; tid < WIL_STA_TID_NUM; tid++) {
1362                                 struct wil_tid_ampdu_rx *r = p->tid_rx[tid];
1363
1364                                 if (r) {
1365                                         seq_printf(s, "[%2d] ", tid);
1366                                         wil_print_rxtid(s, r);
1367                                 }
1368                         }
1369                         spin_unlock_bh(&p->tid_rx_lock);
1370                         seq_printf(s,
1371                                    "Rx invalid frame: non-data %lu, short %lu, large %lu\n",
1372                                    p->stats.rx_non_data_frame,
1373                                    p->stats.rx_short_frame,
1374                                    p->stats.rx_large_frame);
1375
1376                         seq_puts(s, "Rx/MCS:");
1377                         for (mcs = 0; mcs < ARRAY_SIZE(p->stats.rx_per_mcs);
1378                              mcs++)
1379                                 seq_printf(s, " %lld",
1380                                            p->stats.rx_per_mcs[mcs]);
1381                         seq_puts(s, "\n");
1382                 }
1383         }
1384
1385         return 0;
1386 }
1387
1388 static int wil_sta_seq_open(struct inode *inode, struct file *file)
1389 {
1390         return single_open(file, wil_sta_debugfs_show, inode->i_private);
1391 }
1392
1393 static const struct file_operations fops_sta = {
1394         .open           = wil_sta_seq_open,
1395         .release        = single_release,
1396         .read           = seq_read,
1397         .llseek         = seq_lseek,
1398 };
1399
1400 /*----------------*/
1401 static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil,
1402                                        struct dentry *dbg)
1403 {
1404         int i;
1405         char name[32];
1406
1407         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
1408                 struct debugfs_blob_wrapper *blob = &wil->blobs[i];
1409                 const struct fw_map *map = &fw_mapping[i];
1410
1411                 if (!map->name)
1412                         continue;
1413
1414                 blob->data = (void * __force)wil->csr + HOSTADDR(map->host);
1415                 blob->size = map->to - map->from;
1416                 snprintf(name, sizeof(name), "blob_%s", map->name);
1417                 wil_debugfs_create_ioblob(name, S_IRUGO, dbg, blob);
1418         }
1419 }
1420
1421 /* misc files */
1422 static const struct {
1423         const char *name;
1424         umode_t mode;
1425         const struct file_operations *fops;
1426 } dbg_files[] = {
1427         {"mbox",        S_IRUGO,                &fops_mbox},
1428         {"vrings",      S_IRUGO,                &fops_vring},
1429         {"stations",    S_IRUGO,                &fops_sta},
1430         {"desc",        S_IRUGO,                &fops_txdesc},
1431         {"bf",          S_IRUGO,                &fops_bf},
1432         {"ssid",        S_IRUGO | S_IWUSR,      &fops_ssid},
1433         {"mem_val",     S_IRUGO,                &fops_memread},
1434         {"reset",                 S_IWUSR,      &fops_reset},
1435         {"rxon",                  S_IWUSR,      &fops_rxon},
1436         {"tx_mgmt",               S_IWUSR,      &fops_txmgmt},
1437         {"wmi_send",              S_IWUSR,      &fops_wmi},
1438         {"back",        S_IRUGO | S_IWUSR,      &fops_back},
1439         {"pmccfg",      S_IRUGO | S_IWUSR,      &fops_pmccfg},
1440         {"pmcdata",     S_IRUGO,                &fops_pmcdata},
1441         {"temp",        S_IRUGO,                &fops_temp},
1442         {"freq",        S_IRUGO,                &fops_freq},
1443         {"link",        S_IRUGO,                &fops_link},
1444         {"info",        S_IRUGO,                &fops_info},
1445         {"recovery",    S_IRUGO | S_IWUSR,      &fops_recovery},
1446 };
1447
1448 static void wil6210_debugfs_init_files(struct wil6210_priv *wil,
1449                                        struct dentry *dbg)
1450 {
1451         int i;
1452
1453         for (i = 0; i < ARRAY_SIZE(dbg_files); i++)
1454                 debugfs_create_file(dbg_files[i].name, dbg_files[i].mode, dbg,
1455                                     wil, dbg_files[i].fops);
1456 }
1457
1458 /* interrupt control blocks */
1459 static const struct {
1460         const char *name;
1461         u32 icr_off;
1462 } dbg_icr[] = {
1463         {"USER_ICR",            HOSTADDR(RGF_USER_USER_ICR)},
1464         {"DMA_EP_TX_ICR",       HOSTADDR(RGF_DMA_EP_TX_ICR)},
1465         {"DMA_EP_RX_ICR",       HOSTADDR(RGF_DMA_EP_RX_ICR)},
1466         {"DMA_EP_MISC_ICR",     HOSTADDR(RGF_DMA_EP_MISC_ICR)},
1467 };
1468
1469 static void wil6210_debugfs_init_isr(struct wil6210_priv *wil,
1470                                      struct dentry *dbg)
1471 {
1472         int i;
1473
1474         for (i = 0; i < ARRAY_SIZE(dbg_icr); i++)
1475                 wil6210_debugfs_create_ISR(wil, dbg_icr[i].name, dbg,
1476                                            dbg_icr[i].icr_off);
1477 }
1478
1479 #define WIL_FIELD(name, mode, type) { __stringify(name), mode, \
1480         offsetof(struct wil6210_priv, name), type}
1481
1482 /* fields in struct wil6210_priv */
1483 static const struct dbg_off dbg_wil_off[] = {
1484         WIL_FIELD(privacy,      S_IRUGO,                doff_u32),
1485         WIL_FIELD(status[0],    S_IRUGO | S_IWUSR,      doff_ulong),
1486         WIL_FIELD(fw_version,   S_IRUGO,                doff_u32),
1487         WIL_FIELD(hw_version,   S_IRUGO,                doff_x32),
1488         WIL_FIELD(recovery_count, S_IRUGO,              doff_u32),
1489         WIL_FIELD(ap_isolate,   S_IRUGO,                doff_u32),
1490         {},
1491 };
1492
1493 static const struct dbg_off dbg_wil_regs[] = {
1494         {"RGF_MAC_MTRL_COUNTER_0", S_IRUGO, HOSTADDR(RGF_MAC_MTRL_COUNTER_0),
1495                 doff_io32},
1496         {"RGF_USER_USAGE_1", S_IRUGO, HOSTADDR(RGF_USER_USAGE_1), doff_io32},
1497         {},
1498 };
1499
1500 /* static parameters */
1501 static const struct dbg_off dbg_statics[] = {
1502         {"desc_index",  S_IRUGO | S_IWUSR, (ulong)&dbg_txdesc_index, doff_u32},
1503         {"vring_index", S_IRUGO | S_IWUSR, (ulong)&dbg_vring_index, doff_u32},
1504         {"mem_addr",    S_IRUGO | S_IWUSR, (ulong)&mem_addr, doff_u32},
1505         {"vring_idle_trsh", S_IRUGO | S_IWUSR, (ulong)&vring_idle_trsh,
1506          doff_u32},
1507         {},
1508 };
1509
1510 int wil6210_debugfs_init(struct wil6210_priv *wil)
1511 {
1512         struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
1513                         wil_to_wiphy(wil)->debugfsdir);
1514
1515         if (IS_ERR_OR_NULL(dbg))
1516                 return -ENODEV;
1517
1518         wil_pmc_init(wil);
1519
1520         wil6210_debugfs_init_files(wil, dbg);
1521         wil6210_debugfs_init_isr(wil, dbg);
1522         wil6210_debugfs_init_blobs(wil, dbg);
1523         wil6210_debugfs_init_offset(wil, dbg, wil, dbg_wil_off);
1524         wil6210_debugfs_init_offset(wil, dbg, (void * __force)wil->csr,
1525                                     dbg_wil_regs);
1526         wil6210_debugfs_init_offset(wil, dbg, NULL, dbg_statics);
1527
1528         wil6210_debugfs_create_pseudo_ISR(wil, dbg);
1529
1530         wil6210_debugfs_create_ITR_CNT(wil, dbg);
1531
1532         return 0;
1533 }
1534
1535 void wil6210_debugfs_remove(struct wil6210_priv *wil)
1536 {
1537         debugfs_remove_recursive(wil->debug);
1538         wil->debug = NULL;
1539
1540         /* free pmc memory without sending command to fw, as it will
1541          * be reset on the way down anyway
1542          */
1543         wil_pmc_free(wil, false);
1544 }