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 rc, rc1;
 838
 839         if (cmdlen < 0)
 840                 return -EINVAL;
 841
 842         wmi = kmalloc(len, GFP_KERNEL);
 843         if (!wmi)
 844                 return -ENOMEM;
 845
 846         rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
 847         if (rc < 0) {
 848                 kfree(wmi);
 849                 return rc;
 850         }
 851
 852         cmd = (cmdlen > 0) ? &wmi[1] : NULL;
 853         cmdid = le16_to_cpu(wmi->command_id);
 854
 855         rc1 = wmi_send(wil, cmdid, cmd, cmdlen);
 856         kfree(wmi);
 857
 858         wil_info(wil, "0x%04x[%d] -> %d\n", cmdid, cmdlen, rc1);
 859
 860         return rc;
 861 }
 862
 863 static const struct file_operations fops_wmi = {
 864         .write = wil_write_file_wmi,
 865         .open  = simple_open,
 866 };
 867
 868 static void wil_seq_print_skb(struct seq_file *s, struct sk_buff *skb)
 869 {
 870         int i = 0;
 871         int len = skb_headlen(skb);
 872         void *p = skb->data;
 873         int nr_frags = skb_shinfo(skb)->nr_frags;
 874
 875         seq_printf(s, "    len = %d\n", len);
 876         wil_seq_hexdump(s, p, len, "      : ");
 877
 878         if (nr_frags) {
 879                 seq_printf(s, "    nr_frags = %d\n", nr_frags);
 880                 for (i = 0; i < nr_frags; i++) {
 881                         const struct skb_frag_struct *frag =
 882                                         &skb_shinfo(skb)->frags[i];
 883
 884                         len = skb_frag_size(frag);
 885                         p = skb_frag_address_safe(frag);
 886                         seq_printf(s, "    [%2d] : len = %d\n", i, len);
 887                         wil_seq_hexdump(s, p, len, "      : ");
 888                 }
 889         }
 890 }
 891
 892 /*---------Tx/Rx descriptor------------*/
 893 static int wil_txdesc_debugfs_show(struct seq_file *s, void *data)
 894 {
 895         struct wil6210_priv *wil = s->private;
 896         struct vring *vring;
 897         bool tx = (dbg_vring_index < WIL6210_MAX_TX_RINGS);
 898
 899         vring = tx ? &wil->vring_tx[dbg_vring_index] : &wil->vring_rx;
 900
 901         if (!vring->va) {
 902                 if (tx)
 903                         seq_printf(s, "No Tx[%2d] VRING\n", dbg_vring_index);
 904                 else
 905                         seq_puts(s, "No Rx VRING\n");
 906                 return 0;
 907         }
 908
 909         if (dbg_txdesc_index < vring->size) {
 910                 /* use struct vring_tx_desc for Rx as well,
 911                  * only field used, .dma.length, is the same
 912                  */
 913                 volatile struct vring_tx_desc *d =
 914                                 &vring->va[dbg_txdesc_index].tx;
 915                 volatile u32 *u = (volatile u32 *)d;
 916                 struct sk_buff *skb = vring->ctx[dbg_txdesc_index].skb;
 917
 918                 if (tx)
 919                         seq_printf(s, "Tx[%2d][%3d] = {\n", dbg_vring_index,
 920                                    dbg_txdesc_index);
 921                 else
 922                         seq_printf(s, "Rx[%3d] = {\n", dbg_txdesc_index);
 923                 seq_printf(s, "  MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 924                            u[0], u[1], u[2], u[3]);
 925                 seq_printf(s, "  DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n",
 926                            u[4], u[5], u[6], u[7]);
 927                 seq_printf(s, "  SKB = 0x%p\n", skb);
 928
 929                 if (skb) {
 930                         skb_get(skb);
 931                         wil_seq_print_skb(s, skb);
 932                         kfree_skb(skb);
 933                 }
 934                 seq_puts(s, "}\n");
 935         } else {
 936                 if (tx)
 937                         seq_printf(s, "[%2d] TxDesc index (%d) >= size (%d)\n",
 938                                    dbg_vring_index, dbg_txdesc_index,
 939                                    vring->size);
 940                 else
 941                         seq_printf(s, "RxDesc index (%d) >= size (%d)\n",
 942                                    dbg_txdesc_index, vring->size);
 943         }
 944
 945         return 0;
 946 }
 947
 948 static int wil_txdesc_seq_open(struct inode *inode, struct file *file)
 949 {
 950         return single_open(file, wil_txdesc_debugfs_show, inode->i_private);
 951 }
 952
 953 static const struct file_operations fops_txdesc = {
 954         .open           = wil_txdesc_seq_open,
 955         .release        = single_release,
 956         .read           = seq_read,
 957         .llseek         = seq_lseek,
 958 };
 959
 960 /*---------beamforming------------*/
 961 static char *wil_bfstatus_str(u32 status)
 962 {
 963         switch (status) {
 964         case 0:
 965                 return "Failed";
 966         case 1:
 967                 return "OK";
 968         case 2:
 969                 return "Retrying";
 970         default:
 971                 return "??";
 972         }
 973 }
 974
 975 static bool is_all_zeros(void * const x_, size_t sz)
 976 {
 977         /* if reply is all-0, ignore this CID */
 978         u32 *x = x_;
 979         int n;
 980
 981         for (n = 0; n < sz / sizeof(*x); n++)
 982                 if (x[n])
 983                         return false;
 984
 985         return true;
 986 }
 987
 988 static int wil_bf_debugfs_show(struct seq_file *s, void *data)
 989 {
 990         int rc;
 991         int i;
 992         struct wil6210_priv *wil = s->private;
 993         struct wmi_notify_req_cmd cmd = {
 994                 .interval_usec = 0,
 995         };
 996         struct {
 997                 struct wmi_cmd_hdr wmi;
 998                 struct wmi_notify_req_done_event evt;
 999         } __packed reply;
1000
1001         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1002                 u32 status;
1003
1004                 cmd.cid = i;
1005                 rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
1006                               WMI_NOTIFY_REQ_DONE_EVENTID, &reply,
1007                               sizeof(reply), 20);
1008                 /* if reply is all-0, ignore this CID */
1009                 if (rc || is_all_zeros(&reply.evt, sizeof(reply.evt)))
1010                         continue;
1011
1012                 status = le32_to_cpu(reply.evt.status);
1013                 seq_printf(s, "CID %d {\n"
1014                            "  TSF = 0x%016llx\n"
1015                            "  TxMCS = %2d TxTpt = %4d\n"
1016                            "  SQI = %4d\n"
1017                            "  RSSI = %4d\n"
1018                            "  Status = 0x%08x %s\n"
1019                            "  Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n"
1020                            "  Goodput(rx:tx) %4d:%4d\n"
1021                            "}\n",
1022                            i,
1023                            le64_to_cpu(reply.evt.tsf),
1024                            le16_to_cpu(reply.evt.bf_mcs),
1025                            le32_to_cpu(reply.evt.tx_tpt),
1026                            reply.evt.sqi,
1027                            reply.evt.rssi,
1028                            status, wil_bfstatus_str(status),
1029                            le16_to_cpu(reply.evt.my_rx_sector),
1030                            le16_to_cpu(reply.evt.my_tx_sector),
1031                            le16_to_cpu(reply.evt.other_rx_sector),
1032                            le16_to_cpu(reply.evt.other_tx_sector),
1033                            le32_to_cpu(reply.evt.rx_goodput),
1034                            le32_to_cpu(reply.evt.tx_goodput));
1035         }
1036         return 0;
1037 }
1038
1039 static int wil_bf_seq_open(struct inode *inode, struct file *file)
1040 {
1041         return single_open(file, wil_bf_debugfs_show, inode->i_private);
1042 }
1043
1044 static const struct file_operations fops_bf = {
1045         .open           = wil_bf_seq_open,
1046         .release        = single_release,
1047         .read           = seq_read,
1048         .llseek         = seq_lseek,
1049 };
1050
1051 /*---------SSID------------*/
1052 static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
1053                                   size_t count, loff_t *ppos)
1054 {
1055         struct wil6210_priv *wil = file->private_data;
1056         struct wireless_dev *wdev = wil_to_wdev(wil);
1057
1058         return simple_read_from_buffer(user_buf, count, ppos,
1059                                        wdev->ssid, wdev->ssid_len);
1060 }
1061
1062 static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
1063                                    size_t count, loff_t *ppos)
1064 {
1065         struct wil6210_priv *wil = file->private_data;
1066         struct wireless_dev *wdev = wil_to_wdev(wil);
1067         struct net_device *ndev = wil_to_ndev(wil);
1068
1069         if (*ppos != 0) {
1070                 wil_err(wil, "Unable to set SSID substring from [%d]\n",
1071                         (int)*ppos);
1072                 return -EINVAL;
1073         }
1074
1075         if (count > sizeof(wdev->ssid)) {
1076                 wil_err(wil, "SSID too long, len = %d\n", (int)count);
1077                 return -EINVAL;
1078         }
1079         if (netif_running(ndev)) {
1080                 wil_err(wil, "Unable to change SSID on running interface\n");
1081                 return -EINVAL;
1082         }
1083
1084         wdev->ssid_len = count;
1085         return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
1086                                       buf, count);
1087 }
1088
1089 static const struct file_operations fops_ssid = {
1090         .read = wil_read_file_ssid,
1091         .write = wil_write_file_ssid,
1092         .open  = simple_open,
1093 };
1094
1095 /*---------temp------------*/
1096 static void print_temp(struct seq_file *s, const char *prefix, s32 t)
1097 {
1098         switch (t) {
1099         case 0:
1100         case ~(u32)0:
1101                 seq_printf(s, "%s N/A\n", prefix);
1102         break;
1103         default:
1104                 seq_printf(s, "%s %s%d.%03d\n", prefix, (t < 0 ? "-" : ""),
1105                            abs(t / 1000), abs(t % 1000));
1106                 break;
1107         }
1108 }
1109
1110 static int wil_temp_debugfs_show(struct seq_file *s, void *data)
1111 {
1112         struct wil6210_priv *wil = s->private;
1113         s32 t_m, t_r;
1114         int rc = wmi_get_temperature(wil, &t_m, &t_r);
1115
1116         if (rc) {
1117                 seq_puts(s, "Failed\n");
1118                 return 0;
1119         }
1120
1121         print_temp(s, "T_mac   =", t_m);
1122         print_temp(s, "T_radio =", t_r);
1123
1124         return 0;
1125 }
1126
1127 static int wil_temp_seq_open(struct inode *inode, struct file *file)
1128 {
1129         return single_open(file, wil_temp_debugfs_show, inode->i_private);
1130 }
1131
1132 static const struct file_operations fops_temp = {
1133         .open           = wil_temp_seq_open,
1134         .release        = single_release,
1135         .read           = seq_read,
1136         .llseek         = seq_lseek,
1137 };
1138
1139 /*---------freq------------*/
1140 static int wil_freq_debugfs_show(struct seq_file *s, void *data)
1141 {
1142         struct wil6210_priv *wil = s->private;
1143         struct wireless_dev *wdev = wil_to_wdev(wil);
1144         u16 freq = wdev->chandef.chan ? wdev->chandef.chan->center_freq : 0;
1145
1146         seq_printf(s, "Freq = %d\n", freq);
1147
1148         return 0;
1149 }
1150
1151 static int wil_freq_seq_open(struct inode *inode, struct file *file)
1152 {
1153         return single_open(file, wil_freq_debugfs_show, inode->i_private);
1154 }
1155
1156 static const struct file_operations fops_freq = {
1157         .open           = wil_freq_seq_open,
1158         .release        = single_release,
1159         .read           = seq_read,
1160         .llseek         = seq_lseek,
1161 };
1162
1163 /*---------link------------*/
1164 static int wil_link_debugfs_show(struct seq_file *s, void *data)
1165 {
1166         struct wil6210_priv *wil = s->private;
1167         struct station_info sinfo;
1168         int i, rc;
1169
1170         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1171                 struct wil_sta_info *p = &wil->sta[i];
1172                 char *status = "unknown";
1173
1174                 switch (p->status) {
1175                 case wil_sta_unused:
1176                         status = "unused   ";
1177                         break;
1178                 case wil_sta_conn_pending:
1179                         status = "pending  ";
1180                         break;
1181                 case wil_sta_connected:
1182                         status = "connected";
1183                         break;
1184                 }
1185                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1186
1187                 if (p->status == wil_sta_connected) {
1188                         rc = wil_cid_fill_sinfo(wil, i, &sinfo);
1189                         if (rc)
1190                                 return rc;
1191
1192                         seq_printf(s, "  Tx_mcs = %d\n", sinfo.txrate.mcs);
1193                         seq_printf(s, "  Rx_mcs = %d\n", sinfo.rxrate.mcs);
1194                         seq_printf(s, "  SQ     = %d\n", sinfo.signal);
1195                 }
1196         }
1197
1198         return 0;
1199 }
1200
1201 static int wil_link_seq_open(struct inode *inode, struct file *file)
1202 {
1203         return single_open(file, wil_link_debugfs_show, inode->i_private);
1204 }
1205
1206 static const struct file_operations fops_link = {
1207         .open           = wil_link_seq_open,
1208         .release        = single_release,
1209         .read           = seq_read,
1210         .llseek         = seq_lseek,
1211 };
1212
1213 /*---------info------------*/
1214 static int wil_info_debugfs_show(struct seq_file *s, void *data)
1215 {
1216         struct wil6210_priv *wil = s->private;
1217         struct net_device *ndev = wil_to_ndev(wil);
1218         int is_ac = power_supply_is_system_supplied();
1219         int rx = atomic_xchg(&wil->isr_count_rx, 0);
1220         int tx = atomic_xchg(&wil->isr_count_tx, 0);
1221         static ulong rxf_old, txf_old;
1222         ulong rxf = ndev->stats.rx_packets;
1223         ulong txf = ndev->stats.tx_packets;
1224         unsigned int i;
1225
1226         /* >0 : AC; 0 : battery; <0 : error */
1227         seq_printf(s, "AC powered : %d\n", is_ac);
1228         seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);
1229         seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);
1230         rxf_old = rxf;
1231         txf_old = txf;
1232
1233 #define CHECK_QSTATE(x) (state & BIT(__QUEUE_STATE_ ## x)) ? \
1234         " " __stringify(x) : ""
1235
1236         for (i = 0; i < ndev->num_tx_queues; i++) {
1237                 struct netdev_queue *txq = netdev_get_tx_queue(ndev, i);
1238                 unsigned long state = txq->state;
1239
1240                 seq_printf(s, "Tx queue[%i] state : 0x%lx%s%s%s\n", i, state,
1241                            CHECK_QSTATE(DRV_XOFF),
1242                            CHECK_QSTATE(STACK_XOFF),
1243                            CHECK_QSTATE(FROZEN)
1244                           );
1245         }
1246 #undef CHECK_QSTATE
1247         return 0;
1248 }
1249
1250 static int wil_info_seq_open(struct inode *inode, struct file *file)
1251 {
1252         return single_open(file, wil_info_debugfs_show, inode->i_private);
1253 }
1254
1255 static const struct file_operations fops_info = {
1256         .open           = wil_info_seq_open,
1257         .release        = single_release,
1258         .read           = seq_read,
1259         .llseek         = seq_lseek,
1260 };
1261
1262 /*---------recovery------------*/
1263 /* mode = [manual|auto]
1264  * state = [idle|pending|running]
1265  */
1266 static ssize_t wil_read_file_recovery(struct file *file, char __user *user_buf,
1267                                       size_t count, loff_t *ppos)
1268 {
1269         struct wil6210_priv *wil = file->private_data;
1270         char buf[80];
1271         int n;
1272         static const char * const sstate[] = {"idle", "pending", "running"};
1273
1274         n = snprintf(buf, sizeof(buf), "mode = %s\nstate = %s\n",
1275                      no_fw_recovery ? "manual" : "auto",
1276                      sstate[wil->recovery_state]);
1277
1278         n = min_t(int, n, sizeof(buf));
1279
1280         return simple_read_from_buffer(user_buf, count, ppos,
1281                                        buf, n);
1282 }
1283
1284 static ssize_t wil_write_file_recovery(struct file *file,
1285                                        const char __user *buf_,
1286                                        size_t count, loff_t *ppos)
1287 {
1288         struct wil6210_priv *wil = file->private_data;
1289         static const char run_command[] = "run";
1290         char buf[sizeof(run_command) + 1]; /* to detect "runx" */
1291         ssize_t rc;
1292
1293         if (wil->recovery_state != fw_recovery_pending) {
1294                 wil_err(wil, "No recovery pending\n");
1295                 return -EINVAL;
1296         }
1297
1298         if (*ppos != 0) {
1299                 wil_err(wil, "Offset [%d]\n", (int)*ppos);
1300                 return -EINVAL;
1301         }
1302
1303         if (count > sizeof(buf)) {
1304                 wil_err(wil, "Input too long, len = %d\n", (int)count);
1305                 return -EINVAL;
1306         }
1307
1308         rc = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, buf_, count);
1309         if (rc < 0)
1310                 return rc;
1311
1312         buf[rc] = '\0';
1313         if (0 == strcmp(buf, run_command))
1314                 wil_set_recovery_state(wil, fw_recovery_running);
1315         else
1316                 wil_err(wil, "Bad recovery command \"%s\"\n", buf);
1317
1318         return rc;
1319 }
1320
1321 static const struct file_operations fops_recovery = {
1322         .read = wil_read_file_recovery,
1323         .write = wil_write_file_recovery,
1324         .open  = simple_open,
1325 };
1326
1327 /*---------Station matrix------------*/
1328 static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r)
1329 {
1330         int i;
1331         u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size;
1332         unsigned long long drop_dup = r->drop_dup, drop_old = r->drop_old;
1333
1334         seq_printf(s, "([%2d] %3d TU) 0x%03x [", r->buf_size, r->timeout,
1335                    r->head_seq_num);
1336         for (i = 0; i < r->buf_size; i++) {
1337                 if (i == index)
1338                         seq_printf(s, "%c", r->reorder_buf[i] ? 'O' : '|');
1339                 else
1340                         seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_');
1341         }
1342         seq_printf(s,
1343                    "] total %llu drop %llu (dup %llu + old %llu) last 0x%03x\n",
1344                    r->total, drop_dup + drop_old, drop_dup, drop_old,
1345                    r->ssn_last_drop);
1346 }
1347
1348 static void wil_print_rxtid_crypto(struct seq_file *s, int tid,
1349                                    struct wil_tid_crypto_rx *c)
1350 {
1351         int i;
1352
1353         for (i = 0; i < 4; i++) {
1354                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1355
1356                 if (cc->key_set)
1357                         goto has_keys;
1358         }
1359         return;
1360
1361 has_keys:
1362         if (tid < WIL_STA_TID_NUM)
1363                 seq_printf(s, "  [%2d] PN", tid);
1364         else
1365                 seq_puts(s, "  [GR] PN");
1366
1367         for (i = 0; i < 4; i++) {
1368                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1369
1370                 seq_printf(s, " [%i%s]%6phN", i, cc->key_set ? "+" : "-",
1371                            cc->pn);
1372         }
1373         seq_puts(s, "\n");
1374 }
1375
1376 static int wil_sta_debugfs_show(struct seq_file *s, void *data)
1377 __acquires(&p->tid_rx_lock) __releases(&p->tid_rx_lock)
1378 {
1379         struct wil6210_priv *wil = s->private;
1380         int i, tid, mcs;
1381
1382         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1383                 struct wil_sta_info *p = &wil->sta[i];
1384                 char *status = "unknown";
1385                 u8 aid = 0;
1386
1387                 switch (p->status) {
1388                 case wil_sta_unused:
1389                         status = "unused   ";
1390                         break;
1391                 case wil_sta_conn_pending:
1392                         status = "pending  ";
1393                         break;
1394                 case wil_sta_connected:
1395                         status = "connected";
1396                         aid = p->aid;
1397                         break;
1398                 }
1399                 seq_printf(s, "[%d] %pM %s AID %d\n", i, p->addr, status, aid);
1400
1401                 if (p->status == wil_sta_connected) {
1402                         spin_lock_bh(&p->tid_rx_lock);
1403                         for (tid = 0; tid < WIL_STA_TID_NUM; tid++) {
1404                                 struct wil_tid_ampdu_rx *r = p->tid_rx[tid];
1405                                 struct wil_tid_crypto_rx *c =
1406                                                 &p->tid_crypto_rx[tid];
1407
1408                                 if (r) {
1409                                         seq_printf(s, "  [%2d] ", tid);
1410                                         wil_print_rxtid(s, r);
1411                                 }
1412
1413                                 wil_print_rxtid_crypto(s, tid, c);
1414                         }
1415                         wil_print_rxtid_crypto(s, WIL_STA_TID_NUM,
1416                                                &p->group_crypto_rx);
1417                         spin_unlock_bh(&p->tid_rx_lock);
1418                         seq_printf(s,
1419                                    "Rx invalid frame: non-data %lu, short %lu, large %lu, replay %lu\n",
1420                                    p->stats.rx_non_data_frame,
1421                                    p->stats.rx_short_frame,
1422                                    p->stats.rx_large_frame,
1423                                    p->stats.rx_replay);
1424
1425                         seq_puts(s, "Rx/MCS:");
1426                         for (mcs = 0; mcs < ARRAY_SIZE(p->stats.rx_per_mcs);
1427                              mcs++)
1428                                 seq_printf(s, " %lld",
1429                                            p->stats.rx_per_mcs[mcs]);
1430                         seq_puts(s, "\n");
1431                 }
1432         }
1433
1434         return 0;
1435 }
1436
1437 static int wil_sta_seq_open(struct inode *inode, struct file *file)
1438 {
1439         return single_open(file, wil_sta_debugfs_show, inode->i_private);
1440 }
1441
1442 static const struct file_operations fops_sta = {
1443         .open           = wil_sta_seq_open,
1444         .release        = single_release,
1445         .read           = seq_read,
1446         .llseek         = seq_lseek,
1447 };
1448
1449 static ssize_t wil_read_file_led_cfg(struct file *file, char __user *user_buf,
1450                                      size_t count, loff_t *ppos)
1451 {
1452         char buf[80];
1453         int n;
1454
1455         n = snprintf(buf, sizeof(buf),
1456                      "led_id is set to %d, echo 1 to enable, 0 to disable\n",
1457                      led_id);
1458
1459         n = min_t(int, n, sizeof(buf));
1460
1461         return simple_read_from_buffer(user_buf, count, ppos,
1462                                        buf, n);
1463 }
1464
1465 static ssize_t wil_write_file_led_cfg(struct file *file,
1466                                       const char __user *buf_,
1467                                       size_t count, loff_t *ppos)
1468 {
1469         struct wil6210_priv *wil = file->private_data;
1470         int val;
1471         int rc;
1472
1473         rc = kstrtoint_from_user(buf_, count, 0, &val);
1474         if (rc) {
1475                 wil_err(wil, "Invalid argument\n");
1476                 return rc;
1477         }
1478
1479         wil_info(wil, "%s led %d\n", val ? "Enabling" : "Disabling", led_id);
1480         rc = wmi_led_cfg(wil, val);
1481         if (rc) {
1482                 wil_info(wil, "%s led %d failed\n",
1483                          val ? "Enabling" : "Disabling", led_id);
1484                 return rc;
1485         }
1486
1487         return count;
1488 }
1489
1490 static const struct file_operations fops_led_cfg = {
1491         .read = wil_read_file_led_cfg,
1492         .write = wil_write_file_led_cfg,
1493         .open  = simple_open,
1494 };
1495
1496 /* led_blink_time, write:
1497  * "<blink_on_slow> <blink_off_slow> <blink_on_med> <blink_off_med> <blink_on_fast> <blink_off_fast>
1498  */
1499 static ssize_t wil_write_led_blink_time(struct file *file,
1500                                         const char __user *buf,
1501                                         size_t len, loff_t *ppos)
1502 {
1503         int rc;
1504         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
1505
1506         if (!kbuf)
1507                 return -ENOMEM;
1508
1509         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
1510         if (rc != len) {
1511                 kfree(kbuf);
1512                 return rc >= 0 ? -EIO : rc;
1513         }
1514
1515         kbuf[len] = '\0';
1516         rc = sscanf(kbuf, "%d %d %d %d %d %d",
1517                     &led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1518                     &led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1519                     &led_blink_time[WIL_LED_TIME_MED].on_ms,
1520                     &led_blink_time[WIL_LED_TIME_MED].off_ms,
1521                     &led_blink_time[WIL_LED_TIME_FAST].on_ms,
1522                     &led_blink_time[WIL_LED_TIME_FAST].off_ms);
1523         kfree(kbuf);
1524
1525         if (rc < 0)
1526                 return rc;
1527         if (rc < 6)
1528                 return -EINVAL;
1529
1530         return len;
1531 }
1532
1533 static ssize_t wil_read_led_blink_time(struct file *file, char __user *user_buf,
1534                                        size_t count, loff_t *ppos)
1535 {
1536         static char text[400];
1537
1538         snprintf(text, sizeof(text),
1539                  "To set led blink on/off time variables write:\n"
1540                  "<blink_on_slow> <blink_off_slow> <blink_on_med> "
1541                  "<blink_off_med> <blink_on_fast> <blink_off_fast>\n"
1542                  "The current values are:\n"
1543                  "%d %d %d %d %d %d\n",
1544                  led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1545                  led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1546                  led_blink_time[WIL_LED_TIME_MED].on_ms,
1547                  led_blink_time[WIL_LED_TIME_MED].off_ms,
1548                  led_blink_time[WIL_LED_TIME_FAST].on_ms,
1549                  led_blink_time[WIL_LED_TIME_FAST].off_ms);
1550
1551         return simple_read_from_buffer(user_buf, count, ppos, text,
1552                                        sizeof(text));
1553 }
1554
1555 static const struct file_operations fops_led_blink_time = {
1556         .read = wil_read_led_blink_time,
1557         .write = wil_write_led_blink_time,
1558         .open  = simple_open,
1559 };
1560
1561 /*---------FW capabilities------------*/
1562 static int wil_fw_capabilities_debugfs_show(struct seq_file *s, void *data)
1563 {
1564         struct wil6210_priv *wil = s->private;
1565
1566         seq_printf(s, "fw_capabilities : %*pb\n", WMI_FW_CAPABILITY_MAX,
1567                    wil->fw_capabilities);
1568
1569         return 0;
1570 }
1571
1572 static int wil_fw_capabilities_seq_open(struct inode *inode, struct file *file)
1573 {
1574         return single_open(file, wil_fw_capabilities_debugfs_show,
1575                            inode->i_private);
1576 }
1577
1578 static const struct file_operations fops_fw_capabilities = {
1579         .open           = wil_fw_capabilities_seq_open,
1580         .release        = single_release,
1581         .read           = seq_read,
1582         .llseek         = seq_lseek,
1583 };
1584
1585 /*---------FW version------------*/
1586 static int wil_fw_version_debugfs_show(struct seq_file *s, void *data)
1587 {
1588         struct wil6210_priv *wil = s->private;
1589
1590         if (wil->fw_version[0])
1591                 seq_printf(s, "%s\n", wil->fw_version);
1592         else
1593                 seq_puts(s, "N/A\n");
1594
1595         return 0;
1596 }
1597
1598 static int wil_fw_version_seq_open(struct inode *inode, struct file *file)
1599 {
1600         return single_open(file, wil_fw_version_debugfs_show,
1601                            inode->i_private);
1602 }
1603
1604 static const struct file_operations fops_fw_version = {
1605         .open           = wil_fw_version_seq_open,
1606         .release        = single_release,
1607         .read           = seq_read,
1608         .llseek         = seq_lseek,
1609 };
1610
1611 /*---------suspend_stats---------*/
1612 static ssize_t wil_write_suspend_stats(struct file *file,
1613                                        const char __user *buf,
1614                                        size_t len, loff_t *ppos)
1615 {
1616         struct wil6210_priv *wil = file->private_data;
1617
1618         memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats));
1619         wil->suspend_stats.min_suspend_time = ULONG_MAX;
1620         wil->suspend_stats.collection_start = ktime_get();
1621
1622         return len;
1623 }
1624
1625 static ssize_t wil_read_suspend_stats(struct file *file,
1626                                       char __user *user_buf,
1627                                       size_t count, loff_t *ppos)
1628 {
1629         struct wil6210_priv *wil = file->private_data;
1630         static char text[400];
1631         int n;
1632         unsigned long long stats_collection_time =
1633                 ktime_to_us(ktime_sub(ktime_get(),
1634                                       wil->suspend_stats.collection_start));
1635
1636         n = snprintf(text, sizeof(text),
1637                      "Suspend statistics:\n"
1638                      "successful suspends:%ld failed suspends:%ld\n"
1639                      "successful resumes:%ld failed resumes:%ld\n"
1640                      "rejected by host:%ld rejected by device:%ld\n"
1641                      "total suspend time:%lld min suspend time:%lld\n"
1642                      "max suspend time:%lld stats collection time: %lld\n",
1643                      wil->suspend_stats.successful_suspends,
1644                      wil->suspend_stats.failed_suspends,
1645                      wil->suspend_stats.successful_resumes,
1646                      wil->suspend_stats.failed_resumes,
1647                      wil->suspend_stats.rejected_by_host,
1648                      wil->suspend_stats.rejected_by_device,
1649                      wil->suspend_stats.total_suspend_time,
1650                      wil->suspend_stats.min_suspend_time,
1651                      wil->suspend_stats.max_suspend_time,
1652                      stats_collection_time);
1653
1654         n = min_t(int, n, sizeof(text));
1655
1656         return simple_read_from_buffer(user_buf, count, ppos, text, n);
1657 }
1658
1659 static const struct file_operations fops_suspend_stats = {
1660         .read = wil_read_suspend_stats,
1661         .write = wil_write_suspend_stats,
1662         .open  = simple_open,
1663 };
1664
1665 /*----------------*/
1666 static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil,
1667                                        struct dentry *dbg)
1668 {
1669         int i;
1670         char name[32];
1671
1672         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
1673                 struct wil_blob_wrapper *wil_blob = &wil->blobs[i];
1674                 struct debugfs_blob_wrapper *blob = &wil_blob->blob;
1675                 const struct fw_map *map = &fw_mapping[i];
1676
1677                 if (!map->name)
1678                         continue;
1679
1680                 wil_blob->wil = wil;
1681                 blob->data = (void * __force)wil->csr + HOSTADDR(map->host);
1682                 blob->size = map->to - map->from;
1683                 snprintf(name, sizeof(name), "blob_%s", map->name);
1684                 wil_debugfs_create_ioblob(name, 0444, dbg, wil_blob);
1685         }
1686 }
1687
1688 /* misc files */
1689 static const struct {
1690         const char *name;
1691         umode_t mode;
1692         const struct file_operations *fops;
1693 } dbg_files[] = {
1694         {"mbox",        0444,           &fops_mbox},
1695         {"vrings",      0444,           &fops_vring},
1696         {"stations", 0444,              &fops_sta},
1697         {"desc",        0444,           &fops_txdesc},
1698         {"bf",          0444,           &fops_bf},
1699         {"ssid",        0644,           &fops_ssid},
1700         {"mem_val",     0644,           &fops_memread},
1701         {"reset",       0244,           &fops_reset},
1702         {"rxon",        0244,           &fops_rxon},
1703         {"tx_mgmt",     0244,           &fops_txmgmt},
1704         {"wmi_send", 0244,              &fops_wmi},
1705         {"back",        0644,           &fops_back},
1706         {"pmccfg",      0644,           &fops_pmccfg},
1707         {"pmcdata",     0444,           &fops_pmcdata},
1708         {"temp",        0444,           &fops_temp},
1709         {"freq",        0444,           &fops_freq},
1710         {"link",        0444,           &fops_link},
1711         {"info",        0444,           &fops_info},
1712         {"recovery", 0644,              &fops_recovery},
1713         {"led_cfg",     0644,           &fops_led_cfg},
1714         {"led_blink_time",      0644,   &fops_led_blink_time},
1715         {"fw_capabilities",     0444,   &fops_fw_capabilities},
1716         {"fw_version",  0444,           &fops_fw_version},
1717         {"suspend_stats",       0644,   &fops_suspend_stats},
1718 };
1719
1720 static void wil6210_debugfs_init_files(struct wil6210_priv *wil,
1721                                        struct dentry *dbg)
1722 {
1723         int i;
1724
1725         for (i = 0; i < ARRAY_SIZE(dbg_files); i++)
1726                 debugfs_create_file(dbg_files[i].name, dbg_files[i].mode, dbg,
1727                                     wil, dbg_files[i].fops);
1728 }
1729
1730 /* interrupt control blocks */
1731 static const struct {
1732         const char *name;
1733         u32 icr_off;
1734 } dbg_icr[] = {
1735         {"USER_ICR",            HOSTADDR(RGF_USER_USER_ICR)},
1736         {"DMA_EP_TX_ICR",       HOSTADDR(RGF_DMA_EP_TX_ICR)},
1737         {"DMA_EP_RX_ICR",       HOSTADDR(RGF_DMA_EP_RX_ICR)},
1738         {"DMA_EP_MISC_ICR",     HOSTADDR(RGF_DMA_EP_MISC_ICR)},
1739 };
1740
1741 static void wil6210_debugfs_init_isr(struct wil6210_priv *wil,
1742                                      struct dentry *dbg)
1743 {
1744         int i;
1745
1746         for (i = 0; i < ARRAY_SIZE(dbg_icr); i++)
1747                 wil6210_debugfs_create_ISR(wil, dbg_icr[i].name, dbg,
1748                                            dbg_icr[i].icr_off);
1749 }
1750
1751 #define WIL_FIELD(name, mode, type) { __stringify(name), mode, \
1752         offsetof(struct wil6210_priv, name), type}
1753
1754 /* fields in struct wil6210_priv */
1755 static const struct dbg_off dbg_wil_off[] = {
1756         WIL_FIELD(privacy,      0444,           doff_u32),
1757         WIL_FIELD(status[0],    0644,   doff_ulong),
1758         WIL_FIELD(hw_version,   0444,   doff_x32),
1759         WIL_FIELD(recovery_count, 0444, doff_u32),
1760         WIL_FIELD(ap_isolate,   0444,   doff_u32),
1761         WIL_FIELD(discovery_mode, 0644, doff_u8),
1762         WIL_FIELD(chip_revision, 0444,  doff_u8),
1763         WIL_FIELD(abft_len, 0644,               doff_u8),
1764         WIL_FIELD(wakeup_trigger, 0644,         doff_u8),
1765         WIL_FIELD(vring_idle_trsh, 0644,        doff_u32),
1766         {},
1767 };
1768
1769 static const struct dbg_off dbg_wil_regs[] = {
1770         {"RGF_MAC_MTRL_COUNTER_0", 0444, HOSTADDR(RGF_MAC_MTRL_COUNTER_0),
1771                 doff_io32},
1772         {"RGF_USER_USAGE_1", 0444, HOSTADDR(RGF_USER_USAGE_1), doff_io32},
1773         {},
1774 };
1775
1776 /* static parameters */
1777 static const struct dbg_off dbg_statics[] = {
1778         {"desc_index",  0644, (ulong)&dbg_txdesc_index, doff_u32},
1779         {"vring_index", 0644, (ulong)&dbg_vring_index, doff_u32},
1780         {"mem_addr",    0644, (ulong)&mem_addr, doff_u32},
1781         {"led_polarity", 0644, (ulong)&led_polarity, doff_u8},
1782         {},
1783 };
1784
1785 int wil6210_debugfs_init(struct wil6210_priv *wil)
1786 {
1787         struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
1788                         wil_to_wiphy(wil)->debugfsdir);
1789
1790         if (IS_ERR_OR_NULL(dbg))
1791                 return -ENODEV;
1792
1793         wil_pmc_init(wil);
1794
1795         wil6210_debugfs_init_files(wil, dbg);
1796         wil6210_debugfs_init_isr(wil, dbg);
1797         wil6210_debugfs_init_blobs(wil, dbg);
1798         wil6210_debugfs_init_offset(wil, dbg, wil, dbg_wil_off);
1799         wil6210_debugfs_init_offset(wil, dbg, (void * __force)wil->csr,
1800                                     dbg_wil_regs);
1801         wil6210_debugfs_init_offset(wil, dbg, NULL, dbg_statics);
1802
1803         wil6210_debugfs_create_pseudo_ISR(wil, dbg);
1804
1805         wil6210_debugfs_create_ITR_CNT(wil, dbg);
1806
1807         wil->suspend_stats.collection_start = ktime_get();
1808
1809         return 0;
1810 }
1811
1812 void wil6210_debugfs_remove(struct wil6210_priv *wil)
1813 {
1814         debugfs_remove_recursive(wil->debug);
1815         wil->debug = NULL;
1816
1817         /* free pmc memory without sending command to fw, as it will
1818          * be reset on the way down anyway
1819          */
1820         wil_pmc_free(wil, false);
1821 }