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

   1 /*
   2  * Copyright (c) 2012-2017 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 #include "wil6210.h"
  24 #include "wmi.h"
  25 #include "txrx.h"
  26 #include "pmc.h"
  27
  28 /* Nasty hack. Better have per device instances */
  29 static u32 mem_addr;
  30 static u32 dbg_txdesc_index;
  31 static u32 dbg_vring_index; /* 24+ for Rx, 0..23 for Tx */
  32
  33 enum dbg_off_type {
  34         doff_u32 = 0,
  35         doff_x32 = 1,
  36         doff_ulong = 2,
  37         doff_io32 = 3,
  38         doff_u8 = 4
  39 };
  40
  41 /* offset to "wil" */
  42 struct dbg_off {
  43         const char *name;
  44         umode_t mode;
  45         ulong off;
  46         enum dbg_off_type type;
  47 };
  48
  49 static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil,
  50                             const char *name, struct vring *vring,
  51                             char _s, char _h)
  52 {
  53         void __iomem *x = wmi_addr(wil, vring->hwtail);
  54         u32 v;
  55
  56         seq_printf(s, "VRING %s = {\n", name);
  57         seq_printf(s, "  pa     = %pad\n", &vring->pa);
  58         seq_printf(s, "  va     = 0x%p\n", vring->va);
  59         seq_printf(s, "  size   = %d\n", vring->size);
  60         seq_printf(s, "  swtail = %d\n", vring->swtail);
  61         seq_printf(s, "  swhead = %d\n", vring->swhead);
  62         seq_printf(s, "  hwtail = [0x%08x] -> ", vring->hwtail);
  63         if (x) {
  64                 v = readl(x);
  65                 seq_printf(s, "0x%08x = %d\n", v, v);
  66         } else {
  67                 seq_puts(s, "???\n");
  68         }
  69
  70         if (vring->va && (vring->size <= (1 << WIL_RING_SIZE_ORDER_MAX))) {
  71                 uint i;
  72
  73                 for (i = 0; i < vring->size; i++) {
  74                         volatile struct vring_tx_desc *d = &vring->va[i].tx;
  75
  76                         if ((i % 128) == 0 && (i != 0))
  77                                 seq_puts(s, "\n");
  78                         seq_printf(s, "%c", (d->dma.status & BIT(0)) ?
  79                                         _s : (vring->ctx[i].skb ? _h : 'h'));
  80                 }
  81                 seq_puts(s, "\n");
  82         }
  83         seq_puts(s, "}\n");
  84 }
  85
  86 static int wil_vring_debugfs_show(struct seq_file *s, void *data)
  87 {
  88         uint i;
  89         struct wil6210_priv *wil = s->private;
  90
  91         wil_print_vring(s, wil, "rx", &wil->vring_rx, 'S', '_');
  92
  93         for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
  94                 struct vring *vring = &wil->vring_tx[i];
  95                 struct vring_tx_data *txdata = &wil->vring_tx_data[i];
  96
  97                 if (vring->va) {
  98                         int cid = wil->vring2cid_tid[i][0];
  99                         int tid = wil->vring2cid_tid[i][1];
 100                         u32 swhead = vring->swhead;
 101                         u32 swtail = vring->swtail;
 102                         int used = (vring->size + swhead - swtail)
 103                                    % vring->size;
 104                         int avail = vring->size - used - 1;
 105                         char name[10];
 106                         char sidle[10];
 107                         /* performance monitoring */
 108                         cycles_t now = get_cycles();
 109                         uint64_t idle = txdata->idle * 100;
 110                         uint64_t total = now - txdata->begin;
 111
 112                         if (total != 0) {
 113                                 do_div(idle, total);
 114                                 snprintf(sidle, sizeof(sidle), "%3d%%",
 115                                          (int)idle);
 116                         } else {
 117                                 snprintf(sidle, sizeof(sidle), "N/A");
 118                         }
 119                         txdata->begin = now;
 120                         txdata->idle = 0ULL;
 121
 122                         snprintf(name, sizeof(name), "tx_%2d", i);
 123
 124                         if (cid < WIL6210_MAX_CID)
 125                                 seq_printf(s,
 126                                            "\n%pM CID %d TID %d 1x%s BACK([%u] %u TU A%s) [%3d|%3d] idle %s\n",
 127                                            wil->sta[cid].addr, cid, tid,
 128                                            txdata->dot1x_open ? "+" : "-",
 129                                            txdata->agg_wsize,
 130                                            txdata->agg_timeout,
 131                                            txdata->agg_amsdu ? "+" : "-",
 132                                            used, avail, sidle);
 133                         else
 134                                 seq_printf(s,
 135                                            "\nBroadcast 1x%s [%3d|%3d] idle %s\n",
 136                                            txdata->dot1x_open ? "+" : "-",
 137                                            used, avail, sidle);
 138
 139                         wil_print_vring(s, wil, name, vring, '_', 'H');
 140                 }
 141         }
 142
 143         return 0;
 144 }
 145
 146 static int wil_vring_seq_open(struct inode *inode, struct file *file)
 147 {
 148         return single_open(file, wil_vring_debugfs_show, inode->i_private);
 149 }
 150
 151 static const struct file_operations fops_vring = {
 152         .open           = wil_vring_seq_open,
 153         .release        = single_release,
 154         .read           = seq_read,
 155         .llseek         = seq_lseek,
 156 };
 157
 158 static void wil_seq_hexdump(struct seq_file *s, void *p, int len,
 159                             const char *prefix)
 160 {
 161         seq_hex_dump(s, prefix, DUMP_PREFIX_NONE, 16, 1, p, len, false);
 162 }
 163
 164 static void wil_print_ring(struct seq_file *s, const char *prefix,
 165                            void __iomem *off)
 166 {
 167         struct wil6210_priv *wil = s->private;
 168         struct wil6210_mbox_ring r;
 169         int rsize;
 170         uint i;
 171
 172         wil_halp_vote(wil);
 173
 174         wil_memcpy_fromio_32(&r, off, sizeof(r));
 175         wil_mbox_ring_le2cpus(&r);
 176         /*
 177          * we just read memory block from NIC. This memory may be
 178          * garbage. Check validity before using it.
 179          */
 180         rsize = r.size / sizeof(struct wil6210_mbox_ring_desc);
 181
 182         seq_printf(s, "ring %s = {\n", prefix);
 183         seq_printf(s, "  base = 0x%08x\n", r.base);
 184         seq_printf(s, "  size = 0x%04x bytes -> %d entries\n", r.size, rsize);
 185         seq_printf(s, "  tail = 0x%08x\n", r.tail);
 186         seq_printf(s, "  head = 0x%08x\n", r.head);
 187         seq_printf(s, "  entry size = %d\n", r.entry_size);
 188
 189         if (r.size % sizeof(struct wil6210_mbox_ring_desc)) {
 190                 seq_printf(s, "  ??? size is not multiple of %zd, garbage?\n",
 191                            sizeof(struct wil6210_mbox_ring_desc));
 192                 goto out;
 193         }
 194
 195         if (!wmi_addr(wil, r.base) ||
 196             !wmi_addr(wil, r.tail) ||
 197             !wmi_addr(wil, r.head)) {
 198                 seq_puts(s, "  ??? pointers are garbage?\n");
 199                 goto out;
 200         }
 201
 202         for (i = 0; i < rsize; i++) {
 203                 struct wil6210_mbox_ring_desc d;
 204                 struct wil6210_mbox_hdr hdr;
 205                 size_t delta = i * sizeof(d);
 206                 void __iomem *x = wil->csr + HOSTADDR(r.base) + delta;
 207
 208                 wil_memcpy_fromio_32(&d, x, sizeof(d));
 209
 210                 seq_printf(s, "  [%2x] %s %s%s 0x%08x", i,
 211                            d.sync ? "F" : "E",
 212                            (r.tail - r.base == delta) ? "t" : " ",
 213                            (r.head - r.base == delta) ? "h" : " ",
 214                            le32_to_cpu(d.addr));
 215                 if (0 == wmi_read_hdr(wil, d.addr, &hdr)) {
 216                         u16 len = le16_to_cpu(hdr.len);
 217
 218                         seq_printf(s, " -> %04x %04x %04x %02x\n",
 219                                    le16_to_cpu(hdr.seq), len,
 220                                    le16_to_cpu(hdr.type), hdr.flags);
 221                         if (len <= MAX_MBOXITEM_SIZE) {
 222                                 unsigned char databuf[MAX_MBOXITEM_SIZE];
 223                                 void __iomem *src = wmi_buffer(wil, d.addr) +
 224                                         sizeof(struct wil6210_mbox_hdr);
 225                                 /*
 226                                  * No need to check @src for validity -
 227                                  * we already validated @d.addr while
 228                                  * reading header
 229                                  */
 230                                 wil_memcpy_fromio_32(databuf, src, len);
 231                                 wil_seq_hexdump(s, databuf, len, "      : ");
 232                         }
 233                 } else {
 234                         seq_puts(s, "\n");
 235                 }
 236         }
 237  out:
 238         seq_puts(s, "}\n");
 239         wil_halp_unvote(wil);
 240 }
 241
 242 static int wil_mbox_debugfs_show(struct seq_file *s, void *data)
 243 {
 244         struct wil6210_priv *wil = s->private;
 245
 246         wil_print_ring(s, "tx", wil->csr + HOST_MBOX +
 247                        offsetof(struct wil6210_mbox_ctl, tx));
 248         wil_print_ring(s, "rx", wil->csr + HOST_MBOX +
 249                        offsetof(struct wil6210_mbox_ctl, rx));
 250
 251         return 0;
 252 }
 253
 254 static int wil_mbox_seq_open(struct inode *inode, struct file *file)
 255 {
 256         return single_open(file, wil_mbox_debugfs_show, inode->i_private);
 257 }
 258
 259 static const struct file_operations fops_mbox = {
 260         .open           = wil_mbox_seq_open,
 261         .release        = single_release,
 262         .read           = seq_read,
 263         .llseek         = seq_lseek,
 264 };
 265
 266 static int wil_debugfs_iomem_x32_set(void *data, u64 val)
 267 {
 268         writel(val, (void __iomem *)data);
 269         wmb(); /* make sure write propagated to HW */
 270
 271         return 0;
 272 }
 273
 274 static int wil_debugfs_iomem_x32_get(void *data, u64 *val)
 275 {
 276         *val = readl((void __iomem *)data);
 277
 278         return 0;
 279 }
 280
 281 DEFINE_SIMPLE_ATTRIBUTE(fops_iomem_x32, wil_debugfs_iomem_x32_get,
 282                         wil_debugfs_iomem_x32_set, "0x%08llx\n");
 283
 284 static struct dentry *wil_debugfs_create_iomem_x32(const char *name,
 285                                                    umode_t mode,
 286                                                    struct dentry *parent,
 287                                                    void *value)
 288 {
 289         return debugfs_create_file(name, mode, parent, value,
 290                                    &fops_iomem_x32);
 291 }
 292
 293 static int wil_debugfs_ulong_set(void *data, u64 val)
 294 {
 295         *(ulong *)data = val;
 296         return 0;
 297 }
 298
 299 static int wil_debugfs_ulong_get(void *data, u64 *val)
 300 {
 301         *val = *(ulong *)data;
 302         return 0;
 303 }
 304
 305 DEFINE_SIMPLE_ATTRIBUTE(wil_fops_ulong, wil_debugfs_ulong_get,
 306                         wil_debugfs_ulong_set, "0x%llx\n");
 307
 308 static struct dentry *wil_debugfs_create_ulong(const char *name, umode_t mode,
 309                                                struct dentry *parent,
 310                                                ulong *value)
 311 {
 312         return debugfs_create_file(name, mode, parent, value, &wil_fops_ulong);
 313 }
 314
 315 /**
 316  * wil6210_debugfs_init_offset - create set of debugfs files
 317  * @wil - driver's context, used for printing
 318  * @dbg - directory on the debugfs, where files will be created
 319  * @base - base address used in address calculation
 320  * @tbl - table with file descriptions. Should be terminated with empty element.
 321  *
 322  * Creates files accordingly to the @tbl.
 323  */
 324 static void wil6210_debugfs_init_offset(struct wil6210_priv *wil,
 325                                         struct dentry *dbg, void *base,
 326                                         const struct dbg_off * const tbl)
 327 {
 328         int i;
 329
 330         for (i = 0; tbl[i].name; i++) {
 331                 struct dentry *f;
 332
 333                 switch (tbl[i].type) {
 334                 case doff_u32:
 335                         f = debugfs_create_u32(tbl[i].name, tbl[i].mode, dbg,
 336                                                base + tbl[i].off);
 337                         break;
 338                 case doff_x32:
 339                         f = debugfs_create_x32(tbl[i].name, tbl[i].mode, dbg,
 340                                                base + tbl[i].off);
 341                         break;
 342                 case doff_ulong:
 343                         f = wil_debugfs_create_ulong(tbl[i].name, tbl[i].mode,
 344                                                      dbg, base + tbl[i].off);
 345                         break;
 346                 case doff_io32:
 347                         f = wil_debugfs_create_iomem_x32(tbl[i].name,
 348                                                          tbl[i].mode, dbg,
 349                                                          base + tbl[i].off);
 350                         break;
 351                 case doff_u8:
 352                         f = debugfs_create_u8(tbl[i].name, tbl[i].mode, dbg,
 353                                               base + tbl[i].off);
 354                         break;
 355                 default:
 356                         f = ERR_PTR(-EINVAL);
 357                 }
 358                 if (IS_ERR_OR_NULL(f))
 359                         wil_err(wil, "Create file \"%s\": err %ld\n",
 360                                 tbl[i].name, PTR_ERR(f));
 361         }
 362 }
 363
 364 static const struct dbg_off isr_off[] = {
 365         {"ICC", 0644, offsetof(struct RGF_ICR, ICC), doff_io32},
 366         {"ICR", 0644, offsetof(struct RGF_ICR, ICR), doff_io32},
 367         {"ICM", 0644, offsetof(struct RGF_ICR, ICM), doff_io32},
 368         {"ICS", 0244, offsetof(struct RGF_ICR, ICS), doff_io32},
 369         {"IMV", 0644, offsetof(struct RGF_ICR, IMV), doff_io32},
 370         {"IMS", 0244, offsetof(struct RGF_ICR, IMS), doff_io32},
 371         {"IMC", 0244, offsetof(struct RGF_ICR, IMC), doff_io32},
 372         {},
 373 };
 374
 375 static int wil6210_debugfs_create_ISR(struct wil6210_priv *wil,
 376                                       const char *name,
 377                                       struct dentry *parent, u32 off)
 378 {
 379         struct dentry *d = debugfs_create_dir(name, parent);
 380
 381         if (IS_ERR_OR_NULL(d))
 382                 return -ENODEV;
 383
 384         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr + off,
 385                                     isr_off);
 386
 387         return 0;
 388 }
 389
 390 static const struct dbg_off pseudo_isr_off[] = {
 391         {"CAUSE",   0444, HOSTADDR(RGF_DMA_PSEUDO_CAUSE), doff_io32},
 392         {"MASK_SW", 0444, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW), doff_io32},
 393         {"MASK_FW", 0444, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_FW), doff_io32},
 394         {},
 395 };
 396
 397 static int wil6210_debugfs_create_pseudo_ISR(struct wil6210_priv *wil,
 398                                              struct dentry *parent)
 399 {
 400         struct dentry *d = debugfs_create_dir("PSEUDO_ISR", parent);
 401
 402         if (IS_ERR_OR_NULL(d))
 403                 return -ENODEV;
 404
 405         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
 406                                     pseudo_isr_off);
 407
 408         return 0;
 409 }
 410
 411 static const struct dbg_off lgc_itr_cnt_off[] = {
 412         {"TRSH", 0644, HOSTADDR(RGF_DMA_ITR_CNT_TRSH), doff_io32},
 413         {"DATA", 0644, HOSTADDR(RGF_DMA_ITR_CNT_DATA), doff_io32},
 414         {"CTL",  0644, HOSTADDR(RGF_DMA_ITR_CNT_CRL), doff_io32},
 415         {},
 416 };
 417
 418 static const struct dbg_off tx_itr_cnt_off[] = {
 419         {"TRSH", 0644, HOSTADDR(RGF_DMA_ITR_TX_CNT_TRSH),
 420          doff_io32},
 421         {"DATA", 0644, HOSTADDR(RGF_DMA_ITR_TX_CNT_DATA),
 422          doff_io32},
 423         {"CTL",  0644, HOSTADDR(RGF_DMA_ITR_TX_CNT_CTL),
 424          doff_io32},
 425         {"IDL_TRSH", 0644, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_TRSH),
 426          doff_io32},
 427         {"IDL_DATA", 0644, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_DATA),
 428          doff_io32},
 429         {"IDL_CTL",  0644, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_CTL),
 430          doff_io32},
 431         {},
 432 };
 433
 434 static const struct dbg_off rx_itr_cnt_off[] = {
 435         {"TRSH", 0644, HOSTADDR(RGF_DMA_ITR_RX_CNT_TRSH),
 436          doff_io32},
 437         {"DATA", 0644, HOSTADDR(RGF_DMA_ITR_RX_CNT_DATA),
 438          doff_io32},
 439         {"CTL",  0644, HOSTADDR(RGF_DMA_ITR_RX_CNT_CTL),
 440          doff_io32},
 441         {"IDL_TRSH", 0644, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_TRSH),
 442          doff_io32},
 443         {"IDL_DATA", 0644, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_DATA),
 444          doff_io32},
 445         {"IDL_CTL",  0644, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_CTL),
 446          doff_io32},
 447         {},
 448 };
 449
 450 static int wil6210_debugfs_create_ITR_CNT(struct wil6210_priv *wil,
 451                                           struct dentry *parent)
 452 {
 453         struct dentry *d, *dtx, *drx;
 454
 455         d = debugfs_create_dir("ITR_CNT", parent);
 456         if (IS_ERR_OR_NULL(d))
 457                 return -ENODEV;
 458
 459         dtx = debugfs_create_dir("TX", d);
 460         drx = debugfs_create_dir("RX", d);
 461         if (IS_ERR_OR_NULL(dtx) || IS_ERR_OR_NULL(drx))
 462                 return -ENODEV;
 463
 464         wil6210_debugfs_init_offset(wil, d, (void * __force)wil->csr,
 465                                     lgc_itr_cnt_off);
 466
 467         wil6210_debugfs_init_offset(wil, dtx, (void * __force)wil->csr,
 468                                     tx_itr_cnt_off);
 469
 470         wil6210_debugfs_init_offset(wil, drx, (void * __force)wil->csr,
 471                                     rx_itr_cnt_off);
 472         return 0;
 473 }
 474
 475 static int wil_memread_debugfs_show(struct seq_file *s, void *data)
 476 {
 477         struct wil6210_priv *wil = s->private;
 478         void __iomem *a = wmi_buffer(wil, cpu_to_le32(mem_addr));
 479
 480         if (a)
 481                 seq_printf(s, "[0x%08x] = 0x%08x\n", mem_addr, readl(a));
 482         else
 483                 seq_printf(s, "[0x%08x] = INVALID\n", mem_addr);
 484
 485         return 0;
 486 }
 487
 488 static int wil_memread_seq_open(struct inode *inode, struct file *file)
 489 {
 490         return single_open(file, wil_memread_debugfs_show, inode->i_private);
 491 }
 492
 493 static const struct file_operations fops_memread = {
 494         .open           = wil_memread_seq_open,
 495         .release        = single_release,
 496         .read           = seq_read,
 497         .llseek         = seq_lseek,
 498 };
 499
 500 static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf,
 501                                     size_t count, loff_t *ppos)
 502 {
 503         enum { max_count = 4096 };
 504         struct wil_blob_wrapper *wil_blob = file->private_data;
 505         loff_t pos = *ppos;
 506         size_t available = wil_blob->blob.size;
 507         void *buf;
 508         size_t ret;
 509
 510         if (test_bit(wil_status_suspending, wil_blob->wil->status) ||
 511             test_bit(wil_status_suspended, wil_blob->wil->status))
 512                 return 0;
 513
 514         if (pos < 0)
 515                 return -EINVAL;
 516
 517         if (pos >= available || !count)
 518                 return 0;
 519
 520         if (count > available - pos)
 521                 count = available - pos;
 522         if (count > max_count)
 523                 count = max_count;
 524
 525         buf = kmalloc(count, GFP_KERNEL);
 526         if (!buf)
 527                 return -ENOMEM;
 528
 529         wil_memcpy_fromio_32(buf, (const void __iomem *)
 530                              wil_blob->blob.data + pos, count);
 531
 532         ret = copy_to_user(user_buf, buf, count);
 533         kfree(buf);
 534         if (ret == count)
 535                 return -EFAULT;
 536
 537         count -= ret;
 538         *ppos = pos + count;
 539
 540         return count;
 541 }
 542
 543 static const struct file_operations fops_ioblob = {
 544         .read =         wil_read_file_ioblob,
 545         .open =         simple_open,
 546         .llseek =       default_llseek,
 547 };
 548
 549 static
 550 struct dentry *wil_debugfs_create_ioblob(const char *name,
 551                                          umode_t mode,
 552                                          struct dentry *parent,
 553                                          struct wil_blob_wrapper *wil_blob)
 554 {
 555         return debugfs_create_file(name, mode, parent, wil_blob, &fops_ioblob);
 556 }
 557
 558 /*---reset---*/
 559 static ssize_t wil_write_file_reset(struct file *file, const char __user *buf,
 560                                     size_t len, loff_t *ppos)
 561 {
 562         struct wil6210_priv *wil = file->private_data;
 563         struct net_device *ndev = wil_to_ndev(wil);
 564
 565         /**
 566          * BUG:
 567          * this code does NOT sync device state with the rest of system
 568          * use with care, debug only!!!
 569          */
 570         rtnl_lock();
 571         dev_close(ndev);
 572         ndev->flags &= ~IFF_UP;
 573         rtnl_unlock();
 574         wil_reset(wil, true);
 575
 576         return len;
 577 }
 578
 579 static const struct file_operations fops_reset = {
 580         .write = wil_write_file_reset,
 581         .open  = simple_open,
 582 };
 583
 584 /*---write channel 1..4 to rxon for it, 0 to rxoff---*/
 585 static ssize_t wil_write_file_rxon(struct file *file, const char __user *buf,
 586                                    size_t len, loff_t *ppos)
 587 {
 588         struct wil6210_priv *wil = file->private_data;
 589         int rc;
 590         long channel;
 591         bool on;
 592
 593         char *kbuf = memdup_user_nul(buf, len);
 594
 595         if (IS_ERR(kbuf))
 596                 return PTR_ERR(kbuf);
 597         rc = kstrtol(kbuf, 0, &channel);
 598         kfree(kbuf);
 599         if (rc)
 600                 return rc;
 601
 602         if ((channel < 0) || (channel > 4)) {
 603                 wil_err(wil, "Invalid channel %ld\n", channel);
 604                 return -EINVAL;
 605         }
 606         on = !!channel;
 607
 608         if (on) {
 609                 rc = wmi_set_channel(wil, (int)channel);
 610                 if (rc)
 611                         return rc;
 612         }
 613
 614         rc = wmi_rxon(wil, on);
 615         if (rc)
 616                 return rc;
 617
 618         return len;
 619 }
 620
 621 static const struct file_operations fops_rxon = {
 622         .write = wil_write_file_rxon,
 623         .open  = simple_open,
 624 };
 625
 626 /* block ack control, write:
 627  * - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
 628  * - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
 629  * - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
 630  */
 631 static ssize_t wil_write_back(struct file *file, const char __user *buf,
 632                               size_t len, loff_t *ppos)
 633 {
 634         struct wil6210_priv *wil = file->private_data;
 635         int rc;
 636         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 637         char cmd[9];
 638         int p1, p2, p3;
 639
 640         if (!kbuf)
 641                 return -ENOMEM;
 642
 643         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 644         if (rc != len) {
 645                 kfree(kbuf);
 646                 return rc >= 0 ? -EIO : rc;
 647         }
 648
 649         kbuf[len] = '\0';
 650         rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
 651         kfree(kbuf);
 652
 653         if (rc < 0)
 654                 return rc;
 655         if (rc < 2)
 656                 return -EINVAL;
 657
 658         if (0 == strcmp(cmd, "add")) {
 659                 if (rc < 3) {
 660                         wil_err(wil, "BACK: add require at least 2 params\n");
 661                         return -EINVAL;
 662                 }
 663                 if (rc < 4)
 664                         p3 = 0;
 665                 wmi_addba(wil, p1, p2, p3);
 666         } else if (0 == strcmp(cmd, "del_tx")) {
 667                 if (rc < 3)
 668                         p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
 669                 wmi_delba_tx(wil, p1, p2);
 670         } else if (0 == strcmp(cmd, "del_rx")) {
 671                 if (rc < 3) {
 672                         wil_err(wil,
 673                                 "BACK: del_rx require at least 2 params\n");
 674                         return -EINVAL;
 675                 }
 676                 if (rc < 4)
 677                         p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
 678                 wmi_delba_rx(wil, mk_cidxtid(p1, p2), p3);
 679         } else {
 680                 wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
 681                 return -EINVAL;
 682         }
 683
 684         return len;
 685 }
 686
 687 static ssize_t wil_read_back(struct file *file, char __user *user_buf,
 688                              size_t count, loff_t *ppos)
 689 {
 690         static const char text[] = "block ack control, write:\n"
 691         " - \"add <ringid> <agg_size> <timeout>\" to trigger ADDBA\n"
 692         "If missing, <timeout> defaults to 0\n"
 693         " - \"del_tx <ringid> <reason>\" to trigger DELBA for Tx side\n"
 694         " - \"del_rx <CID> <TID> <reason>\" to trigger DELBA for Rx side\n"
 695         "If missing, <reason> set to \"STA_LEAVING\" (36)\n";
 696
 697         return simple_read_from_buffer(user_buf, count, ppos, text,
 698                                        sizeof(text));
 699 }
 700
 701 static const struct file_operations fops_back = {
 702         .read = wil_read_back,
 703         .write = wil_write_back,
 704         .open  = simple_open,
 705 };
 706
 707 /* pmc control, write:
 708  * - "alloc <num descriptors> <descriptor_size>" to allocate PMC
 709  * - "free" to release memory allocated for PMC
 710  */
 711 static ssize_t wil_write_pmccfg(struct file *file, const char __user *buf,
 712                                 size_t len, loff_t *ppos)
 713 {
 714         struct wil6210_priv *wil = file->private_data;
 715         int rc;
 716         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 717         char cmd[9];
 718         int num_descs, desc_size;
 719
 720         if (!kbuf)
 721                 return -ENOMEM;
 722
 723         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 724         if (rc != len) {
 725                 kfree(kbuf);
 726                 return rc >= 0 ? -EIO : rc;
 727         }
 728
 729         kbuf[len] = '\0';
 730         rc = sscanf(kbuf, "%8s %d %d", cmd, &num_descs, &desc_size);
 731         kfree(kbuf);
 732
 733         if (rc < 0)
 734                 return rc;
 735
 736         if (rc < 1) {
 737                 wil_err(wil, "pmccfg: no params given\n");
 738                 return -EINVAL;
 739         }
 740
 741         if (0 == strcmp(cmd, "alloc")) {
 742                 if (rc != 3) {
 743                         wil_err(wil, "pmccfg: alloc requires 2 params\n");
 744                         return -EINVAL;
 745                 }
 746                 wil_pmc_alloc(wil, num_descs, desc_size);
 747         } else if (0 == strcmp(cmd, "free")) {
 748                 if (rc != 1) {
 749                         wil_err(wil, "pmccfg: free does not have any params\n");
 750                         return -EINVAL;
 751                 }
 752                 wil_pmc_free(wil, true);
 753         } else {
 754                 wil_err(wil, "pmccfg: Unrecognized command \"%s\"\n", cmd);
 755                 return -EINVAL;
 756         }
 757
 758         return len;
 759 }
 760
 761 static ssize_t wil_read_pmccfg(struct file *file, char __user *user_buf,
 762                                size_t count, loff_t *ppos)
 763 {
 764         struct wil6210_priv *wil = file->private_data;
 765         char text[256];
 766         char help[] = "pmc control, write:\n"
 767         " - \"alloc <num descriptors> <descriptor_size>\" to allocate pmc\n"
 768         " - \"free\" to free memory allocated for pmc\n";
 769
 770         sprintf(text, "Last command status: %d\n\n%s",
 771                 wil_pmc_last_cmd_status(wil),
 772                 help);
 773
 774         return simple_read_from_buffer(user_buf, count, ppos, text,
 775                                        strlen(text) + 1);
 776 }
 777
 778 static const struct file_operations fops_pmccfg = {
 779         .read = wil_read_pmccfg,
 780         .write = wil_write_pmccfg,
 781         .open  = simple_open,
 782 };
 783
 784 static const struct file_operations fops_pmcdata = {
 785         .open           = simple_open,
 786         .read           = wil_pmc_read,
 787         .llseek         = wil_pmc_llseek,
 788 };
 789
 790 /*---tx_mgmt---*/
 791 /* Write mgmt frame to this file to send it */
 792 static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
 793                                      size_t len, loff_t *ppos)
 794 {
 795         struct wil6210_priv *wil = file->private_data;
 796         struct wiphy *wiphy = wil_to_wiphy(wil);
 797         struct wireless_dev *wdev = wil_to_wdev(wil);
 798         struct cfg80211_mgmt_tx_params params;
 799         int rc;
 800         void *frame;
 801
 802         if (!len)
 803                 return -EINVAL;
 804
 805         frame = memdup_user(buf, len);
 806         if (IS_ERR(frame))
 807                 return PTR_ERR(frame);
 808
 809         params.buf = frame;
 810         params.len = len;
 811         params.chan = wdev->preset_chandef.chan;
 812
 813         rc = wil_cfg80211_mgmt_tx(wiphy, wdev, &params, NULL);
 814
 815         kfree(frame);
 816         wil_info(wil, "-> %d\n", rc);
 817
 818         return len;
 819 }
 820
 821 static const struct file_operations fops_txmgmt = {
 822         .write = wil_write_file_txmgmt,
 823         .open  = simple_open,
 824 };
 825
 826 /* Write WMI command (w/o mbox header) to this file to send it
 827  * WMI starts from wil6210_mbox_hdr_wmi header
 828  */
 829 static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
 830                                   size_t len, loff_t *ppos)
 831 {
 832         struct wil6210_priv *wil = file->private_data;
 833         struct wmi_cmd_hdr *wmi;
 834         void *cmd;
 835         int cmdlen = len - sizeof(struct wmi_cmd_hdr);
 836         u16 cmdid;
 837         int rc1;
 838
 839         if (cmdlen < 0 || *ppos != 0)
 840                 return -EINVAL;
 841
 842         wmi = memdup_user(buf, len);
 843         if (IS_ERR(wmi))
 844                 return PTR_ERR(wmi);
 845
 846         cmd = (cmdlen > 0) ? &wmi[1] : NULL;
 847         cmdid = le16_to_cpu(wmi->command_id);
 848
 849         rc1 = wmi_send(wil, cmdid, cmd, cmdlen);
 850         kfree(wmi);
 851
 852         wil_info(wil, "0x%04x[%d] -> %d\n", cmdid, cmdlen, rc1);
 853
 854         return len;
 855 }
 856
 857 static const struct file_operations fops_wmi = {
 858         .write = wil_write_file_wmi,
 859         .open  = simple_open,
 860 };
 861
 862 static void wil_seq_print_skb(struct seq_file *s, struct sk_buff *skb)
 863 {
 864         int i = 0;
 865         int len = skb_headlen(skb);
 866         void *p = skb->data;
 867         int nr_frags = skb_shinfo(skb)->nr_frags;
 868
 869         seq_printf(s, "    len = %d\n", len);
 870         wil_seq_hexdump(s, p, len, "      : ");
 871
 872         if (nr_frags) {
 873                 seq_printf(s, "    nr_frags = %d\n", nr_frags);
 874                 for (i = 0; i < nr_frags; i++) {
 875                         const struct skb_frag_struct *frag =
 876                                         &skb_shinfo(skb)->frags[i];
 877
 878                         len = skb_frag_size(frag);
 879                         p = skb_frag_address_safe(frag);
 880                         seq_printf(s, "    [%2d] : len = %d\n", i, len);
 881                         wil_seq_hexdump(s, p, len, "      : ");
 882                 }
 883         }
 884 }
 885
 886 /*---------Tx/Rx descriptor------------*/
 887 static int wil_txdesc_debugfs_show(struct seq_file *s, void *data)
 888 {
 889         struct wil6210_priv *wil = s->private;
 890         struct vring *vring;
 891         bool tx = (dbg_vring_index < WIL6210_MAX_TX_RINGS);
 892
 893         vring = tx ? &wil->vring_tx[dbg_vring_index] : &wil->vring_rx;
 894
 895         if (!vring->va) {
 896                 if (tx)
 897                         seq_printf(s, "No Tx[%2d] VRING\n", dbg_vring_index);
 898                 else
 899                         seq_puts(s, "No Rx VRING\n");
 900                 return 0;
 901         }
 902
 903         if (dbg_txdesc_index < vring->size) {
 904                 /* use struct vring_tx_desc for Rx as well,
 905                  * only field used, .dma.length, is the same
 906                  */
 907                 volatile struct vring_tx_desc *d =
 908                                 &vring->va[dbg_txdesc_index].tx;
 909                 volatile u32 *u = (volatile u32 *)d;
 910                 struct sk_buff *skb = vring->ctx[dbg_txdesc_index].skb;
 911
 912                 if (tx)
 913                         seq_printf(s, "Tx[%2d][%3d] = {\n", dbg_vring_index,
 914                                    dbg_txdesc_index);
 915                 else
 916                         seq_printf(s, "Rx[%3d] = {\n", dbg_txdesc_index);
 917                 seq_printf(s, "  MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 918                            u[0], u[1], u[2], u[3]);
 919                 seq_printf(s, "  DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 920                            u[4], u[5], u[6], u[7]);
 921                 seq_printf(s, "  SKB = 0x%p\n", skb);
 922
 923                 if (skb) {
 924                         skb_get(skb);
 925                         wil_seq_print_skb(s, skb);
 926                         kfree_skb(skb);
 927                 }
 928                 seq_puts(s, "}\n");
 929         } else {
 930                 if (tx)
 931                         seq_printf(s, "[%2d] TxDesc index (%d) >= size (%d)\n",
 932                                    dbg_vring_index, dbg_txdesc_index,
 933                                    vring->size);
 934                 else
 935                         seq_printf(s, "RxDesc index (%d) >= size (%d)\n",
 936                                    dbg_txdesc_index, vring->size);
 937         }
 938
 939         return 0;
 940 }
 941
 942 static int wil_txdesc_seq_open(struct inode *inode, struct file *file)
 943 {
 944         return single_open(file, wil_txdesc_debugfs_show, inode->i_private);
 945 }
 946
 947 static const struct file_operations fops_txdesc = {
 948         .open           = wil_txdesc_seq_open,
 949         .release        = single_release,
 950         .read           = seq_read,
 951         .llseek         = seq_lseek,
 952 };
 953
 954 /*---------beamforming------------*/
 955 static char *wil_bfstatus_str(u32 status)
 956 {
 957         switch (status) {
 958         case 0:
 959                 return "Failed";
 960         case 1:
 961                 return "OK";
 962         case 2:
 963                 return "Retrying";
 964         default:
 965                 return "??";
 966         }
 967 }
 968
 969 static bool is_all_zeros(void * const x_, size_t sz)
 970 {
 971         /* if reply is all-0, ignore this CID */
 972         u32 *x = x_;
 973         int n;
 974
 975         for (n = 0; n < sz / sizeof(*x); n++)
 976                 if (x[n])
 977                         return false;
 978
 979         return true;
 980 }
 981
 982 static int wil_bf_debugfs_show(struct seq_file *s, void *data)
 983 {
 984         int rc;
 985         int i;
 986         struct wil6210_priv *wil = s->private;
 987         struct wmi_notify_req_cmd cmd = {
 988                 .interval_usec = 0,
 989         };
 990         struct {
 991                 struct wmi_cmd_hdr wmi;
 992                 struct wmi_notify_req_done_event evt;
 993         } __packed reply;
 994
 995         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
 996                 u32 status;
 997
 998                 cmd.cid = i;
 999                 rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
1000                               WMI_NOTIFY_REQ_DONE_EVENTID, &reply,
1001                               sizeof(reply), 20);
1002                 /* if reply is all-0, ignore this CID */
1003                 if (rc || is_all_zeros(&reply.evt, sizeof(reply.evt)))
1004                         continue;
1005
1006                 status = le32_to_cpu(reply.evt.status);
1007                 seq_printf(s, "CID %d {\n"
1008                            "  TSF = 0x%016llx\n"
1009                            "  TxMCS = %2d TxTpt = %4d\n"
1010                            "  SQI = %4d\n"
1011                            "  RSSI = %4d\n"
1012                            "  Status = 0x%08x %s\n"
1013                            "  Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n"
1014                            "  Goodput(rx:tx) %4d:%4d\n"
1015                            "}\n",
1016                            i,
1017                            le64_to_cpu(reply.evt.tsf),
1018                            le16_to_cpu(reply.evt.bf_mcs),
1019                            le32_to_cpu(reply.evt.tx_tpt),
1020                            reply.evt.sqi,
1021                            reply.evt.rssi,
1022                            status, wil_bfstatus_str(status),
1023                            le16_to_cpu(reply.evt.my_rx_sector),
1024                            le16_to_cpu(reply.evt.my_tx_sector),
1025                            le16_to_cpu(reply.evt.other_rx_sector),
1026                            le16_to_cpu(reply.evt.other_tx_sector),
1027                            le32_to_cpu(reply.evt.rx_goodput),
1028                            le32_to_cpu(reply.evt.tx_goodput));
1029         }
1030         return 0;
1031 }
1032
1033 static int wil_bf_seq_open(struct inode *inode, struct file *file)
1034 {
1035         return single_open(file, wil_bf_debugfs_show, inode->i_private);
1036 }
1037
1038 static const struct file_operations fops_bf = {
1039         .open           = wil_bf_seq_open,
1040         .release        = single_release,
1041         .read           = seq_read,
1042         .llseek         = seq_lseek,
1043 };
1044
1045 /*---------SSID------------*/
1046 static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
1047                                   size_t count, loff_t *ppos)
1048 {
1049         struct wil6210_priv *wil = file->private_data;
1050         struct wireless_dev *wdev = wil_to_wdev(wil);
1051
1052         return simple_read_from_buffer(user_buf, count, ppos,
1053                                        wdev->ssid, wdev->ssid_len);
1054 }
1055
1056 static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
1057                                    size_t count, loff_t *ppos)
1058 {
1059         struct wil6210_priv *wil = file->private_data;
1060         struct wireless_dev *wdev = wil_to_wdev(wil);
1061         struct net_device *ndev = wil_to_ndev(wil);
1062
1063         if (*ppos != 0) {
1064                 wil_err(wil, "Unable to set SSID substring from [%d]\n",
1065                         (int)*ppos);
1066                 return -EINVAL;
1067         }
1068
1069         if (count > sizeof(wdev->ssid)) {
1070                 wil_err(wil, "SSID too long, len = %d\n", (int)count);
1071                 return -EINVAL;
1072         }
1073         if (netif_running(ndev)) {
1074                 wil_err(wil, "Unable to change SSID on running interface\n");
1075                 return -EINVAL;
1076         }
1077
1078         wdev->ssid_len = count;
1079         return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
1080                                       buf, count);
1081 }
1082
1083 static const struct file_operations fops_ssid = {
1084         .read = wil_read_file_ssid,
1085         .write = wil_write_file_ssid,
1086         .open  = simple_open,
1087 };
1088
1089 /*---------temp------------*/
1090 static void print_temp(struct seq_file *s, const char *prefix, s32 t)
1091 {
1092         switch (t) {
1093         case 0:
1094         case ~(u32)0:
1095                 seq_printf(s, "%s N/A\n", prefix);
1096         break;
1097         default:
1098                 seq_printf(s, "%s %s%d.%03d\n", prefix, (t < 0 ? "-" : ""),
1099                            abs(t / 1000), abs(t % 1000));
1100                 break;
1101         }
1102 }
1103
1104 static int wil_temp_debugfs_show(struct seq_file *s, void *data)
1105 {
1106         struct wil6210_priv *wil = s->private;
1107         s32 t_m, t_r;
1108         int rc = wmi_get_temperature(wil, &t_m, &t_r);
1109
1110         if (rc) {
1111                 seq_puts(s, "Failed\n");
1112                 return 0;
1113         }
1114
1115         print_temp(s, "T_mac   =", t_m);
1116         print_temp(s, "T_radio =", t_r);
1117
1118         return 0;
1119 }
1120
1121 static int wil_temp_seq_open(struct inode *inode, struct file *file)
1122 {
1123         return single_open(file, wil_temp_debugfs_show, inode->i_private);
1124 }
1125
1126 static const struct file_operations fops_temp = {
1127         .open           = wil_temp_seq_open,
1128         .release        = single_release,
1129         .read           = seq_read,
1130         .llseek         = seq_lseek,
1131 };
1132
1133 /*---------freq------------*/
1134 static int wil_freq_debugfs_show(struct seq_file *s, void *data)
1135 {
1136         struct wil6210_priv *wil = s->private;
1137         struct wireless_dev *wdev = wil_to_wdev(wil);
1138         u16 freq = wdev->chandef.chan ? wdev->chandef.chan->center_freq : 0;
1139
1140         seq_printf(s, "Freq = %d\n", freq);
1141
1142         return 0;
1143 }
1144
1145 static int wil_freq_seq_open(struct inode *inode, struct file *file)
1146 {
1147         return single_open(file, wil_freq_debugfs_show, inode->i_private);
1148 }
1149
1150 static const struct file_operations fops_freq = {
1151         .open           = wil_freq_seq_open,
1152         .release        = single_release,
1153         .read           = seq_read,
1154         .llseek         = seq_lseek,
1155 };
1156
1157 /*---------link------------*/
1158 static int wil_link_debugfs_show(struct seq_file *s, void *data)
1159 {
1160         struct wil6210_priv *wil = s->private;
1161         struct station_info sinfo;
1162         int i, rc;
1163
1164         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1165                 struct wil_sta_info *p = &wil->sta[i];
1166                 char *status = "unknown";
1167
1168                 switch (p->status) {
1169                 case wil_sta_unused:
1170                         status = "unused   ";
1171                         break;
1172                 case wil_sta_conn_pending:
1173                         status = "pending  ";
1174                         break;
1175                 case wil_sta_connected:
1176                         status = "connected";
1177                         break;
1178                 }
1179                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1180
1181                 if (p->status == wil_sta_connected) {
1182                         rc = wil_cid_fill_sinfo(wil, i, &sinfo);
1183                         if (rc)
1184                                 return rc;
1185
1186                         seq_printf(s, "  Tx_mcs = %d\n", sinfo.txrate.mcs);
1187                         seq_printf(s, "  Rx_mcs = %d\n", sinfo.rxrate.mcs);
1188                         seq_printf(s, "  SQ     = %d\n", sinfo.signal);
1189                 }
1190         }
1191
1192         return 0;
1193 }
1194
1195 static int wil_link_seq_open(struct inode *inode, struct file *file)
1196 {
1197         return single_open(file, wil_link_debugfs_show, inode->i_private);
1198 }
1199
1200 static const struct file_operations fops_link = {
1201         .open           = wil_link_seq_open,
1202         .release        = single_release,
1203         .read           = seq_read,
1204         .llseek         = seq_lseek,
1205 };
1206
1207 /*---------info------------*/
1208 static int wil_info_debugfs_show(struct seq_file *s, void *data)
1209 {
1210         struct wil6210_priv *wil = s->private;
1211         struct net_device *ndev = wil_to_ndev(wil);
1212         int is_ac = power_supply_is_system_supplied();
1213         int rx = atomic_xchg(&wil->isr_count_rx, 0);
1214         int tx = atomic_xchg(&wil->isr_count_tx, 0);
1215         static ulong rxf_old, txf_old;
1216         ulong rxf = ndev->stats.rx_packets;
1217         ulong txf = ndev->stats.tx_packets;
1218         unsigned int i;
1219
1220         /* >0 : AC; 0 : battery; <0 : error */
1221         seq_printf(s, "AC powered : %d\n", is_ac);
1222         seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);
1223         seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);
1224         rxf_old = rxf;
1225         txf_old = txf;
1226
1227 #define CHECK_QSTATE(x) (state & BIT(__QUEUE_STATE_ ## x)) ? \
1228         " " __stringify(x) : ""
1229
1230         for (i = 0; i < ndev->num_tx_queues; i++) {
1231                 struct netdev_queue *txq = netdev_get_tx_queue(ndev, i);
1232                 unsigned long state = txq->state;
1233
1234                 seq_printf(s, "Tx queue[%i] state : 0x%lx%s%s%s\n", i, state,
1235                            CHECK_QSTATE(DRV_XOFF),
1236                            CHECK_QSTATE(STACK_XOFF),
1237                            CHECK_QSTATE(FROZEN)
1238                           );
1239         }
1240 #undef CHECK_QSTATE
1241         return 0;
1242 }
1243
1244 static int wil_info_seq_open(struct inode *inode, struct file *file)
1245 {
1246         return single_open(file, wil_info_debugfs_show, inode->i_private);
1247 }
1248
1249 static const struct file_operations fops_info = {
1250         .open           = wil_info_seq_open,
1251         .release        = single_release,
1252         .read           = seq_read,
1253         .llseek         = seq_lseek,
1254 };
1255
1256 /*---------recovery------------*/
1257 /* mode = [manual|auto]
1258  * state = [idle|pending|running]
1259  */
1260 static ssize_t wil_read_file_recovery(struct file *file, char __user *user_buf,
1261                                       size_t count, loff_t *ppos)
1262 {
1263         struct wil6210_priv *wil = file->private_data;
1264         char buf[80];
1265         int n;
1266         static const char * const sstate[] = {"idle", "pending", "running"};
1267
1268         n = snprintf(buf, sizeof(buf), "mode = %s\nstate = %s\n",
1269                      no_fw_recovery ? "manual" : "auto",
1270                      sstate[wil->recovery_state]);
1271
1272         n = min_t(int, n, sizeof(buf));
1273
1274         return simple_read_from_buffer(user_buf, count, ppos,
1275                                        buf, n);
1276 }
1277
1278 static ssize_t wil_write_file_recovery(struct file *file,
1279                                        const char __user *buf_,
1280                                        size_t count, loff_t *ppos)
1281 {
1282         struct wil6210_priv *wil = file->private_data;
1283         static const char run_command[] = "run";
1284         char buf[sizeof(run_command) + 1]; /* to detect "runx" */
1285         ssize_t rc;
1286
1287         if (wil->recovery_state != fw_recovery_pending) {
1288                 wil_err(wil, "No recovery pending\n");
1289                 return -EINVAL;
1290         }
1291
1292         if (*ppos != 0) {
1293                 wil_err(wil, "Offset [%d]\n", (int)*ppos);
1294                 return -EINVAL;
1295         }
1296
1297         if (count > sizeof(buf)) {
1298                 wil_err(wil, "Input too long, len = %d\n", (int)count);
1299                 return -EINVAL;
1300         }
1301
1302         rc = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, buf_, count);
1303         if (rc < 0)
1304                 return rc;
1305
1306         buf[rc] = '\0';
1307         if (0 == strcmp(buf, run_command))
1308                 wil_set_recovery_state(wil, fw_recovery_running);
1309         else
1310                 wil_err(wil, "Bad recovery command \"%s\"\n", buf);
1311
1312         return rc;
1313 }
1314
1315 static const struct file_operations fops_recovery = {
1316         .read = wil_read_file_recovery,
1317         .write = wil_write_file_recovery,
1318         .open  = simple_open,
1319 };
1320
1321 /*---------Station matrix------------*/
1322 static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r)
1323 {
1324         int i;
1325         u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size;
1326         unsigned long long drop_dup = r->drop_dup, drop_old = r->drop_old;
1327
1328         seq_printf(s, "([%2d] %3d TU) 0x%03x [", r->buf_size, r->timeout,
1329                    r->head_seq_num);
1330         for (i = 0; i < r->buf_size; i++) {
1331                 if (i == index)
1332                         seq_printf(s, "%c", r->reorder_buf[i] ? 'O' : '|');
1333                 else
1334                         seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_');
1335         }
1336         seq_printf(s,
1337                    "] total %llu drop %llu (dup %llu + old %llu) last 0x%03x\n",
1338                    r->total, drop_dup + drop_old, drop_dup, drop_old,
1339                    r->ssn_last_drop);
1340 }
1341
1342 static void wil_print_rxtid_crypto(struct seq_file *s, int tid,
1343                                    struct wil_tid_crypto_rx *c)
1344 {
1345         int i;
1346
1347         for (i = 0; i < 4; i++) {
1348                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1349
1350                 if (cc->key_set)
1351                         goto has_keys;
1352         }
1353         return;
1354
1355 has_keys:
1356         if (tid < WIL_STA_TID_NUM)
1357                 seq_printf(s, "  [%2d] PN", tid);
1358         else
1359                 seq_puts(s, "  [GR] PN");
1360
1361         for (i = 0; i < 4; i++) {
1362                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1363
1364                 seq_printf(s, " [%i%s]%6phN", i, cc->key_set ? "+" : "-",
1365                            cc->pn);
1366         }
1367         seq_puts(s, "\n");
1368 }
1369
1370 static int wil_sta_debugfs_show(struct seq_file *s, void *data)
1371 __acquires(&p->tid_rx_lock) __releases(&p->tid_rx_lock)
1372 {
1373         struct wil6210_priv *wil = s->private;
1374         int i, tid, mcs;
1375
1376         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1377                 struct wil_sta_info *p = &wil->sta[i];
1378                 char *status = "unknown";
1379                 u8 aid = 0;
1380
1381                 switch (p->status) {
1382                 case wil_sta_unused:
1383                         status = "unused   ";
1384                         break;
1385                 case wil_sta_conn_pending:
1386                         status = "pending  ";
1387                         break;
1388                 case wil_sta_connected:
1389                         status = "connected";
1390                         aid = p->aid;
1391                         break;
1392                 }
1393                 seq_printf(s, "[%d] %pM %s AID %d\n", i, p->addr, status, aid);
1394
1395                 if (p->status == wil_sta_connected) {
1396                         spin_lock_bh(&p->tid_rx_lock);
1397                         for (tid = 0; tid < WIL_STA_TID_NUM; tid++) {
1398                                 struct wil_tid_ampdu_rx *r = p->tid_rx[tid];
1399                                 struct wil_tid_crypto_rx *c =
1400                                                 &p->tid_crypto_rx[tid];
1401
1402                                 if (r) {
1403                                         seq_printf(s, "  [%2d] ", tid);
1404                                         wil_print_rxtid(s, r);
1405                                 }
1406
1407                                 wil_print_rxtid_crypto(s, tid, c);
1408                         }
1409                         wil_print_rxtid_crypto(s, WIL_STA_TID_NUM,
1410                                                &p->group_crypto_rx);
1411                         spin_unlock_bh(&p->tid_rx_lock);
1412                         seq_printf(s,
1413                                    "Rx invalid frame: non-data %lu, short %lu, large %lu, replay %lu\n",
1414                                    p->stats.rx_non_data_frame,
1415                                    p->stats.rx_short_frame,
1416                                    p->stats.rx_large_frame,
1417                                    p->stats.rx_replay);
1418
1419                         seq_puts(s, "Rx/MCS:");
1420                         for (mcs = 0; mcs < ARRAY_SIZE(p->stats.rx_per_mcs);
1421                              mcs++)
1422                                 seq_printf(s, " %lld",
1423                                            p->stats.rx_per_mcs[mcs]);
1424                         seq_puts(s, "\n");
1425                 }
1426         }
1427
1428         return 0;
1429 }
1430
1431 static int wil_sta_seq_open(struct inode *inode, struct file *file)
1432 {
1433         return single_open(file, wil_sta_debugfs_show, inode->i_private);
1434 }
1435
1436 static const struct file_operations fops_sta = {
1437         .open           = wil_sta_seq_open,
1438         .release        = single_release,
1439         .read           = seq_read,
1440         .llseek         = seq_lseek,
1441 };
1442
1443 static ssize_t wil_read_file_led_cfg(struct file *file, char __user *user_buf,
1444                                      size_t count, loff_t *ppos)
1445 {
1446         char buf[80];
1447         int n;
1448
1449         n = snprintf(buf, sizeof(buf),
1450                      "led_id is set to %d, echo 1 to enable, 0 to disable\n",
1451                      led_id);
1452
1453         n = min_t(int, n, sizeof(buf));
1454
1455         return simple_read_from_buffer(user_buf, count, ppos,
1456                                        buf, n);
1457 }
1458
1459 static ssize_t wil_write_file_led_cfg(struct file *file,
1460                                       const char __user *buf_,
1461                                       size_t count, loff_t *ppos)
1462 {
1463         struct wil6210_priv *wil = file->private_data;
1464         int val;
1465         int rc;
1466
1467         rc = kstrtoint_from_user(buf_, count, 0, &val);
1468         if (rc) {
1469                 wil_err(wil, "Invalid argument\n");
1470                 return rc;
1471         }
1472
1473         wil_info(wil, "%s led %d\n", val ? "Enabling" : "Disabling", led_id);
1474         rc = wmi_led_cfg(wil, val);
1475         if (rc) {
1476                 wil_info(wil, "%s led %d failed\n",
1477                          val ? "Enabling" : "Disabling", led_id);
1478                 return rc;
1479         }
1480
1481         return count;
1482 }
1483
1484 static const struct file_operations fops_led_cfg = {
1485         .read = wil_read_file_led_cfg,
1486         .write = wil_write_file_led_cfg,
1487         .open  = simple_open,
1488 };
1489
1490 /* led_blink_time, write:
1491  * "<blink_on_slow> <blink_off_slow> <blink_on_med> <blink_off_med> <blink_on_fast> <blink_off_fast>
1492  */
1493 static ssize_t wil_write_led_blink_time(struct file *file,
1494                                         const char __user *buf,
1495                                         size_t len, loff_t *ppos)
1496 {
1497         int rc;
1498         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
1499
1500         if (!kbuf)
1501                 return -ENOMEM;
1502
1503         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
1504         if (rc != len) {
1505                 kfree(kbuf);
1506                 return rc >= 0 ? -EIO : rc;
1507         }
1508
1509         kbuf[len] = '\0';
1510         rc = sscanf(kbuf, "%d %d %d %d %d %d",
1511                     &led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1512                     &led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1513                     &led_blink_time[WIL_LED_TIME_MED].on_ms,
1514                     &led_blink_time[WIL_LED_TIME_MED].off_ms,
1515                     &led_blink_time[WIL_LED_TIME_FAST].on_ms,
1516                     &led_blink_time[WIL_LED_TIME_FAST].off_ms);
1517         kfree(kbuf);
1518
1519         if (rc < 0)
1520                 return rc;
1521         if (rc < 6)
1522                 return -EINVAL;
1523
1524         return len;
1525 }
1526
1527 static ssize_t wil_read_led_blink_time(struct file *file, char __user *user_buf,
1528                                        size_t count, loff_t *ppos)
1529 {
1530         static char text[400];
1531
1532         snprintf(text, sizeof(text),
1533                  "To set led blink on/off time variables write:\n"
1534                  "<blink_on_slow> <blink_off_slow> <blink_on_med> "
1535                  "<blink_off_med> <blink_on_fast> <blink_off_fast>\n"
1536                  "The current values are:\n"
1537                  "%d %d %d %d %d %d\n",
1538                  led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1539                  led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1540                  led_blink_time[WIL_LED_TIME_MED].on_ms,
1541                  led_blink_time[WIL_LED_TIME_MED].off_ms,
1542                  led_blink_time[WIL_LED_TIME_FAST].on_ms,
1543                  led_blink_time[WIL_LED_TIME_FAST].off_ms);
1544
1545         return simple_read_from_buffer(user_buf, count, ppos, text,
1546                                        sizeof(text));
1547 }
1548
1549 static const struct file_operations fops_led_blink_time = {
1550         .read = wil_read_led_blink_time,
1551         .write = wil_write_led_blink_time,
1552         .open  = simple_open,
1553 };
1554
1555 /*---------FW capabilities------------*/
1556 static int wil_fw_capabilities_debugfs_show(struct seq_file *s, void *data)
1557 {
1558         struct wil6210_priv *wil = s->private;
1559
1560         seq_printf(s, "fw_capabilities : %*pb\n", WMI_FW_CAPABILITY_MAX,
1561                    wil->fw_capabilities);
1562
1563         return 0;
1564 }
1565
1566 static int wil_fw_capabilities_seq_open(struct inode *inode, struct file *file)
1567 {
1568         return single_open(file, wil_fw_capabilities_debugfs_show,
1569                            inode->i_private);
1570 }
1571
1572 static const struct file_operations fops_fw_capabilities = {
1573         .open           = wil_fw_capabilities_seq_open,
1574         .release        = single_release,
1575         .read           = seq_read,
1576         .llseek         = seq_lseek,
1577 };
1578
1579 /*---------FW version------------*/
1580 static int wil_fw_version_debugfs_show(struct seq_file *s, void *data)
1581 {
1582         struct wil6210_priv *wil = s->private;
1583
1584         if (wil->fw_version[0])
1585                 seq_printf(s, "%s\n", wil->fw_version);
1586         else
1587                 seq_puts(s, "N/A\n");
1588
1589         return 0;
1590 }
1591
1592 static int wil_fw_version_seq_open(struct inode *inode, struct file *file)
1593 {
1594         return single_open(file, wil_fw_version_debugfs_show,
1595                            inode->i_private);
1596 }
1597
1598 static const struct file_operations fops_fw_version = {
1599         .open           = wil_fw_version_seq_open,
1600         .release        = single_release,
1601         .read           = seq_read,
1602         .llseek         = seq_lseek,
1603 };
1604
1605 /*---------suspend_stats---------*/
1606 static ssize_t wil_write_suspend_stats(struct file *file,
1607                                        const char __user *buf,
1608                                        size_t len, loff_t *ppos)
1609 {
1610         struct wil6210_priv *wil = file->private_data;
1611
1612         memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats));
1613         wil->suspend_stats.min_suspend_time = ULONG_MAX;
1614         wil->suspend_stats.collection_start = ktime_get();
1615
1616         return len;
1617 }
1618
1619 static ssize_t wil_read_suspend_stats(struct file *file,
1620                                       char __user *user_buf,
1621                                       size_t count, loff_t *ppos)
1622 {
1623         struct wil6210_priv *wil = file->private_data;
1624         static char text[400];
1625         int n;
1626         unsigned long long stats_collection_time =
1627                 ktime_to_us(ktime_sub(ktime_get(),
1628                                       wil->suspend_stats.collection_start));
1629
1630         n = snprintf(text, sizeof(text),
1631                      "Suspend statistics:\n"
1632                      "successful suspends:%ld failed suspends:%ld\n"
1633                      "successful resumes:%ld failed resumes:%ld\n"
1634                      "rejected by host:%ld rejected by device:%ld\n"
1635                      "total suspend time:%lld min suspend time:%lld\n"
1636                      "max suspend time:%lld stats collection time: %lld\n",
1637                      wil->suspend_stats.successful_suspends,
1638                      wil->suspend_stats.failed_suspends,
1639                      wil->suspend_stats.successful_resumes,
1640                      wil->suspend_stats.failed_resumes,
1641                      wil->suspend_stats.rejected_by_host,
1642                      wil->suspend_stats.rejected_by_device,
1643                      wil->suspend_stats.total_suspend_time,
1644                      wil->suspend_stats.min_suspend_time,
1645                      wil->suspend_stats.max_suspend_time,
1646                      stats_collection_time);
1647
1648         n = min_t(int, n, sizeof(text));
1649
1650         return simple_read_from_buffer(user_buf, count, ppos, text, n);
1651 }
1652
1653 static const struct file_operations fops_suspend_stats = {
1654         .read = wil_read_suspend_stats,
1655         .write = wil_write_suspend_stats,
1656         .open  = simple_open,
1657 };
1658
1659 /*----------------*/
1660 static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil,
1661                                        struct dentry *dbg)
1662 {
1663         int i;
1664         char name[32];
1665
1666         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
1667                 struct wil_blob_wrapper *wil_blob = &wil->blobs[i];
1668                 struct debugfs_blob_wrapper *blob = &wil_blob->blob;
1669                 const struct fw_map *map = &fw_mapping[i];
1670
1671                 if (!map->name)
1672                         continue;
1673
1674                 wil_blob->wil = wil;
1675                 blob->data = (void * __force)wil->csr + HOSTADDR(map->host);
1676                 blob->size = map->to - map->from;
1677                 snprintf(name, sizeof(name), "blob_%s", map->name);
1678                 wil_debugfs_create_ioblob(name, 0444, dbg, wil_blob);
1679         }
1680 }
1681
1682 /* misc files */
1683 static const struct {
1684         const char *name;
1685         umode_t mode;
1686         const struct file_operations *fops;
1687 } dbg_files[] = {
1688         {"mbox",        0444,           &fops_mbox},
1689         {"vrings",      0444,           &fops_vring},
1690         {"stations", 0444,              &fops_sta},
1691         {"desc",        0444,           &fops_txdesc},
1692         {"bf",          0444,           &fops_bf},
1693         {"ssid",        0644,           &fops_ssid},
1694         {"mem_val",     0644,           &fops_memread},
1695         {"reset",       0244,           &fops_reset},
1696         {"rxon",        0244,           &fops_rxon},
1697         {"tx_mgmt",     0244,           &fops_txmgmt},
1698         {"wmi_send", 0244,              &fops_wmi},
1699         {"back",        0644,           &fops_back},
1700         {"pmccfg",      0644,           &fops_pmccfg},
1701         {"pmcdata",     0444,           &fops_pmcdata},
1702         {"temp",        0444,           &fops_temp},
1703         {"freq",        0444,           &fops_freq},
1704         {"link",        0444,           &fops_link},
1705         {"info",        0444,           &fops_info},
1706         {"recovery", 0644,              &fops_recovery},
1707         {"led_cfg",     0644,           &fops_led_cfg},
1708         {"led_blink_time",      0644,   &fops_led_blink_time},
1709         {"fw_capabilities",     0444,   &fops_fw_capabilities},
1710         {"fw_version",  0444,           &fops_fw_version},
1711         {"suspend_stats",       0644,   &fops_suspend_stats},
1712 };
1713
1714 static void wil6210_debugfs_init_files(struct wil6210_priv *wil,
1715                                        struct dentry *dbg)
1716 {
1717         int i;
1718
1719         for (i = 0; i < ARRAY_SIZE(dbg_files); i++)
1720                 debugfs_create_file(dbg_files[i].name, dbg_files[i].mode, dbg,
1721                                     wil, dbg_files[i].fops);
1722 }
1723
1724 /* interrupt control blocks */
1725 static const struct {
1726         const char *name;
1727         u32 icr_off;
1728 } dbg_icr[] = {
1729         {"USER_ICR",            HOSTADDR(RGF_USER_USER_ICR)},
1730         {"DMA_EP_TX_ICR",       HOSTADDR(RGF_DMA_EP_TX_ICR)},
1731         {"DMA_EP_RX_ICR",       HOSTADDR(RGF_DMA_EP_RX_ICR)},
1732         {"DMA_EP_MISC_ICR",     HOSTADDR(RGF_DMA_EP_MISC_ICR)},
1733 };
1734
1735 static void wil6210_debugfs_init_isr(struct wil6210_priv *wil,
1736                                      struct dentry *dbg)
1737 {
1738         int i;
1739
1740         for (i = 0; i < ARRAY_SIZE(dbg_icr); i++)
1741                 wil6210_debugfs_create_ISR(wil, dbg_icr[i].name, dbg,
1742                                            dbg_icr[i].icr_off);
1743 }
1744
1745 #define WIL_FIELD(name, mode, type) { __stringify(name), mode, \
1746         offsetof(struct wil6210_priv, name), type}
1747
1748 /* fields in struct wil6210_priv */
1749 static const struct dbg_off dbg_wil_off[] = {
1750         WIL_FIELD(privacy,      0444,           doff_u32),
1751         WIL_FIELD(status[0],    0644,   doff_ulong),
1752         WIL_FIELD(hw_version,   0444,   doff_x32),
1753         WIL_FIELD(recovery_count, 0444, doff_u32),
1754         WIL_FIELD(ap_isolate,   0444,   doff_u32),
1755         WIL_FIELD(discovery_mode, 0644, doff_u8),
1756         WIL_FIELD(chip_revision, 0444,  doff_u8),
1757         WIL_FIELD(abft_len, 0644,               doff_u8),
1758         WIL_FIELD(wakeup_trigger, 0644,         doff_u8),
1759         WIL_FIELD(vring_idle_trsh, 0644,        doff_u32),
1760         {},
1761 };
1762
1763 static const struct dbg_off dbg_wil_regs[] = {
1764         {"RGF_MAC_MTRL_COUNTER_0", 0444, HOSTADDR(RGF_MAC_MTRL_COUNTER_0),
1765                 doff_io32},
1766         {"RGF_USER_USAGE_1", 0444, HOSTADDR(RGF_USER_USAGE_1), doff_io32},
1767         {},
1768 };
1769
1770 /* static parameters */
1771 static const struct dbg_off dbg_statics[] = {
1772         {"desc_index",  0644, (ulong)&dbg_txdesc_index, doff_u32},
1773         {"vring_index", 0644, (ulong)&dbg_vring_index, doff_u32},
1774         {"mem_addr",    0644, (ulong)&mem_addr, doff_u32},
1775         {"led_polarity", 0644, (ulong)&led_polarity, doff_u8},
1776         {},
1777 };
1778
1779 int wil6210_debugfs_init(struct wil6210_priv *wil)
1780 {
1781         struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
1782                         wil_to_wiphy(wil)->debugfsdir);
1783
1784         if (IS_ERR_OR_NULL(dbg))
1785                 return -ENODEV;
1786
1787         wil_pmc_init(wil);
1788
1789         wil6210_debugfs_init_files(wil, dbg);
1790         wil6210_debugfs_init_isr(wil, dbg);
1791         wil6210_debugfs_init_blobs(wil, dbg);
1792         wil6210_debugfs_init_offset(wil, dbg, wil, dbg_wil_off);
1793         wil6210_debugfs_init_offset(wil, dbg, (void * __force)wil->csr,
1794                                     dbg_wil_regs);
1795         wil6210_debugfs_init_offset(wil, dbg, NULL, dbg_statics);
1796
1797         wil6210_debugfs_create_pseudo_ISR(wil, dbg);
1798
1799         wil6210_debugfs_create_ITR_CNT(wil, dbg);
1800
1801         wil->suspend_stats.collection_start = ktime_get();
1802
1803         return 0;
1804 }
1805
1806 void wil6210_debugfs_remove(struct wil6210_priv *wil)
1807 {
1808         debugfs_remove_recursive(wil->debug);
1809         wil->debug = NULL;
1810
1811         /* free pmc memory without sending command to fw, as it will
1812          * be reset on the way down anyway
1813          */
1814         wil_pmc_free(wil, false);
1815 }