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