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

   1 /*
   2  * Copyright (c) 2012-2016 Qualcomm Atheros, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/debugfs.h>
  19 #include <linux/seq_file.h>
  20 #include <linux/pci.h>
  21 #include <linux/rtnetlink.h>
  22 #include <linux/power_supply.h>
  23
  24 #include "wil6210.h"
  25 #include "wmi.h"
  26 #include "txrx.h"
  27 #include "pmc.h"
  28
  29 /* Nasty hack. Better have per device instances */
  30 static u32 mem_addr;
  31 static u32 dbg_txdesc_index;
  32 static u32 dbg_vring_index; /* 24+ for Rx, 0..23 for Tx */
  33 u32 vring_idle_trsh = 16; /* HW fetches up to 16 descriptors at once */
  34
  35 enum dbg_off_type {
  36         doff_u32 = 0,
  37         doff_x32 = 1,
  38         doff_ulong = 2,
  39         doff_io32 = 3,
  40         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", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICC), doff_io32},
 368         {"ICR", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICR), doff_io32},
 369         {"ICM", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, ICM), doff_io32},
 370         {"ICS",           S_IWUSR, offsetof(struct RGF_ICR, ICS), doff_io32},
 371         {"IMV", S_IRUGO | S_IWUSR, offsetof(struct RGF_ICR, IMV), doff_io32},
 372         {"IMS",           S_IWUSR, offsetof(struct RGF_ICR, IMS), doff_io32},
 373         {"IMC",           S_IWUSR, 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",   S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE), doff_io32},
 394         {"MASK_SW", S_IRUGO, HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW), doff_io32},
 395         {"MASK_FW", S_IRUGO, 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", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_TRSH), doff_io32},
 415         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_DATA), doff_io32},
 416         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_CNT_CRL), doff_io32},
 417         {},
 418 };
 419
 420 static const struct dbg_off tx_itr_cnt_off[] = {
 421         {"TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_TRSH),
 422          doff_io32},
 423         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_DATA),
 424          doff_io32},
 425         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_CNT_CTL),
 426          doff_io32},
 427         {"IDL_TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_TRSH),
 428          doff_io32},
 429         {"IDL_DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_TX_IDL_CNT_DATA),
 430          doff_io32},
 431         {"IDL_CTL",  S_IRUGO | S_IWUSR, 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", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_TRSH),
 438          doff_io32},
 439         {"DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_DATA),
 440          doff_io32},
 441         {"CTL",  S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_CNT_CTL),
 442          doff_io32},
 443         {"IDL_TRSH", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_TRSH),
 444          doff_io32},
 445         {"IDL_DATA", S_IRUGO | S_IWUSR, HOSTADDR(RGF_DMA_ITR_RX_IDL_CNT_DATA),
 446          doff_io32},
 447         {"IDL_CTL",  S_IRUGO | S_IWUSR, 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_halp_vote(wil_blob->wil, buf,
 528                                     (const volatile void __iomem *)
 529                                     wil_blob->blob.data + pos, count);
 530
 531         ret = copy_to_user(user_buf, buf, count);
 532         kfree(buf);
 533         if (ret == count)
 534                 return -EFAULT;
 535
 536         count -= ret;
 537         *ppos = pos + count;
 538
 539         return count;
 540 }
 541
 542 static const struct file_operations fops_ioblob = {
 543         .read =         wil_read_file_ioblob,
 544         .open =         simple_open,
 545         .llseek =       default_llseek,
 546 };
 547
 548 static
 549 struct dentry *wil_debugfs_create_ioblob(const char *name,
 550                                          umode_t mode,
 551                                          struct dentry *parent,
 552                                          struct wil_blob_wrapper *wil_blob)
 553 {
 554         return debugfs_create_file(name, mode, parent, wil_blob, &fops_ioblob);
 555 }
 556
 557 /*---reset---*/
 558 static ssize_t wil_write_file_reset(struct file *file, const char __user *buf,
 559                                     size_t len, loff_t *ppos)
 560 {
 561         struct wil6210_priv *wil = file->private_data;
 562         struct net_device *ndev = wil_to_ndev(wil);
 563
 564         /**
 565          * BUG:
 566          * this code does NOT sync device state with the rest of system
 567          * use with care, debug only!!!
 568          */
 569         rtnl_lock();
 570         dev_close(ndev);
 571         ndev->flags &= ~IFF_UP;
 572         rtnl_unlock();
 573         wil_reset(wil, true);
 574
 575         return len;
 576 }
 577
 578 static const struct file_operations fops_reset = {
 579         .write = wil_write_file_reset,
 580         .open  = simple_open,
 581 };
 582
 583 /*---write channel 1..4 to rxon for it, 0 to rxoff---*/
 584 static ssize_t wil_write_file_rxon(struct file *file, const char __user *buf,
 585                                    size_t len, loff_t *ppos)
 586 {
 587         struct wil6210_priv *wil = file->private_data;
 588         int rc;
 589         long channel;
 590         bool on;
 591
 592         char *kbuf = memdup_user_nul(buf, len);
 593
 594         if (IS_ERR(kbuf))
 595                 return PTR_ERR(kbuf);
 596         rc = kstrtol(kbuf, 0, &channel);
 597         kfree(kbuf);
 598         if (rc)
 599                 return rc;
 600
 601         if ((channel < 0) || (channel > 4)) {
 602                 wil_err(wil, "Invalid channel %ld\n", channel);
 603                 return -EINVAL;
 604         }
 605         on = !!channel;
 606
 607         if (on) {
 608                 rc = wmi_set_channel(wil, (int)channel);
 609                 if (rc)
 610                         return rc;
 611         }
 612
 613         rc = wmi_rxon(wil, on);
 614         if (rc)
 615                 return rc;
 616
 617         return len;
 618 }
 619
 620 static const struct file_operations fops_rxon = {
 621         .write = wil_write_file_rxon,
 622         .open  = simple_open,
 623 };
 624
 625 /* block ack control, write:
 626  * - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
 627  * - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
 628  * - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
 629  */
 630 static ssize_t wil_write_back(struct file *file, const char __user *buf,
 631                               size_t len, loff_t *ppos)
 632 {
 633         struct wil6210_priv *wil = file->private_data;
 634         int rc;
 635         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 636         char cmd[9];
 637         int p1, p2, p3;
 638
 639         if (!kbuf)
 640                 return -ENOMEM;
 641
 642         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 643         if (rc != len) {
 644                 kfree(kbuf);
 645                 return rc >= 0 ? -EIO : rc;
 646         }
 647
 648         kbuf[len] = '\0';
 649         rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
 650         kfree(kbuf);
 651
 652         if (rc < 0)
 653                 return rc;
 654         if (rc < 2)
 655                 return -EINVAL;
 656
 657         if (0 == strcmp(cmd, "add")) {
 658                 if (rc < 3) {
 659                         wil_err(wil, "BACK: add require at least 2 params\n");
 660                         return -EINVAL;
 661                 }
 662                 if (rc < 4)
 663                         p3 = 0;
 664                 wmi_addba(wil, p1, p2, p3);
 665         } else if (0 == strcmp(cmd, "del_tx")) {
 666                 if (rc < 3)
 667                         p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
 668                 wmi_delba_tx(wil, p1, p2);
 669         } else if (0 == strcmp(cmd, "del_rx")) {
 670                 if (rc < 3) {
 671                         wil_err(wil,
 672                                 "BACK: del_rx require at least 2 params\n");
 673                         return -EINVAL;
 674                 }
 675                 if (rc < 4)
 676                         p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
 677                 wmi_delba_rx(wil, mk_cidxtid(p1, p2), p3);
 678         } else {
 679                 wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
 680                 return -EINVAL;
 681         }
 682
 683         return len;
 684 }
 685
 686 static ssize_t wil_read_back(struct file *file, char __user *user_buf,
 687                              size_t count, loff_t *ppos)
 688 {
 689         static const char text[] = "block ack control, write:\n"
 690         " - \"add <ringid> <agg_size> <timeout>\" to trigger ADDBA\n"
 691         "If missing, <timeout> defaults to 0\n"
 692         " - \"del_tx <ringid> <reason>\" to trigger DELBA for Tx side\n"
 693         " - \"del_rx <CID> <TID> <reason>\" to trigger DELBA for Rx side\n"
 694         "If missing, <reason> set to \"STA_LEAVING\" (36)\n";
 695
 696         return simple_read_from_buffer(user_buf, count, ppos, text,
 697                                        sizeof(text));
 698 }
 699
 700 static const struct file_operations fops_back = {
 701         .read = wil_read_back,
 702         .write = wil_write_back,
 703         .open  = simple_open,
 704 };
 705
 706 /* pmc control, write:
 707  * - "alloc <num descriptors> <descriptor_size>" to allocate PMC
 708  * - "free" to release memory allocated for PMC
 709  */
 710 static ssize_t wil_write_pmccfg(struct file *file, const char __user *buf,
 711                                 size_t len, loff_t *ppos)
 712 {
 713         struct wil6210_priv *wil = file->private_data;
 714         int rc;
 715         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 716         char cmd[9];
 717         int num_descs, desc_size;
 718
 719         if (!kbuf)
 720                 return -ENOMEM;
 721
 722         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
 723         if (rc != len) {
 724                 kfree(kbuf);
 725                 return rc >= 0 ? -EIO : rc;
 726         }
 727
 728         kbuf[len] = '\0';
 729         rc = sscanf(kbuf, "%8s %d %d", cmd, &num_descs, &desc_size);
 730         kfree(kbuf);
 731
 732         if (rc < 0)
 733                 return rc;
 734
 735         if (rc < 1) {
 736                 wil_err(wil, "pmccfg: no params given\n");
 737                 return -EINVAL;
 738         }
 739
 740         if (0 == strcmp(cmd, "alloc")) {
 741                 if (rc != 3) {
 742                         wil_err(wil, "pmccfg: alloc requires 2 params\n");
 743                         return -EINVAL;
 744                 }
 745                 wil_pmc_alloc(wil, num_descs, desc_size);
 746         } else if (0 == strcmp(cmd, "free")) {
 747                 if (rc != 1) {
 748                         wil_err(wil, "pmccfg: free does not have any params\n");
 749                         return -EINVAL;
 750                 }
 751                 wil_pmc_free(wil, true);
 752         } else {
 753                 wil_err(wil, "pmccfg: Unrecognized command \"%s\"\n", cmd);
 754                 return -EINVAL;
 755         }
 756
 757         return len;
 758 }
 759
 760 static ssize_t wil_read_pmccfg(struct file *file, char __user *user_buf,
 761                                size_t count, loff_t *ppos)
 762 {
 763         struct wil6210_priv *wil = file->private_data;
 764         char text[256];
 765         char help[] = "pmc control, write:\n"
 766         " - \"alloc <num descriptors> <descriptor_size>\" to allocate pmc\n"
 767         " - \"free\" to free memory allocated for pmc\n";
 768
 769         sprintf(text, "Last command status: %d\n\n%s",
 770                 wil_pmc_last_cmd_status(wil),
 771                 help);
 772
 773         return simple_read_from_buffer(user_buf, count, ppos, text,
 774                                        strlen(text) + 1);
 775 }
 776
 777 static const struct file_operations fops_pmccfg = {
 778         .read = wil_read_pmccfg,
 779         .write = wil_write_pmccfg,
 780         .open  = simple_open,
 781 };
 782
 783 static const struct file_operations fops_pmcdata = {
 784         .open           = simple_open,
 785         .read           = wil_pmc_read,
 786         .llseek         = wil_pmc_llseek,
 787 };
 788
 789 /*---tx_mgmt---*/
 790 /* Write mgmt frame to this file to send it */
 791 static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
 792                                      size_t len, loff_t *ppos)
 793 {
 794         struct wil6210_priv *wil = file->private_data;
 795         struct wiphy *wiphy = wil_to_wiphy(wil);
 796         struct wireless_dev *wdev = wil_to_wdev(wil);
 797         struct cfg80211_mgmt_tx_params params;
 798         int rc;
 799         void *frame = kmalloc(len, GFP_KERNEL);
 800
 801         if (!frame)
 802                 return -ENOMEM;
 803
 804         if (copy_from_user(frame, buf, len)) {
 805                 kfree(frame);
 806                 return -EIO;
 807         }
 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, "%s() -> %d\n", __func__, 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, "%s(0x%04x[%d]) -> %d\n", __func__, 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                            "  Status = 0x%08x %s\n"
1018                            "  Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n"
1019                            "  Goodput(rx:tx) %4d:%4d\n"
1020                            "}\n",
1021                            i,
1022                            le64_to_cpu(reply.evt.tsf),
1023                            le16_to_cpu(reply.evt.bf_mcs),
1024                            le32_to_cpu(reply.evt.tx_tpt),
1025                            reply.evt.sqi,
1026                            status, wil_bfstatus_str(status),
1027                            le16_to_cpu(reply.evt.my_rx_sector),
1028                            le16_to_cpu(reply.evt.my_tx_sector),
1029                            le16_to_cpu(reply.evt.other_rx_sector),
1030                            le16_to_cpu(reply.evt.other_tx_sector),
1031                            le32_to_cpu(reply.evt.rx_goodput),
1032                            le32_to_cpu(reply.evt.tx_goodput));
1033         }
1034         return 0;
1035 }
1036
1037 static int wil_bf_seq_open(struct inode *inode, struct file *file)
1038 {
1039         return single_open(file, wil_bf_debugfs_show, inode->i_private);
1040 }
1041
1042 static const struct file_operations fops_bf = {
1043         .open           = wil_bf_seq_open,
1044         .release        = single_release,
1045         .read           = seq_read,
1046         .llseek         = seq_lseek,
1047 };
1048
1049 /*---------SSID------------*/
1050 static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf,
1051                                   size_t count, loff_t *ppos)
1052 {
1053         struct wil6210_priv *wil = file->private_data;
1054         struct wireless_dev *wdev = wil_to_wdev(wil);
1055
1056         return simple_read_from_buffer(user_buf, count, ppos,
1057                                        wdev->ssid, wdev->ssid_len);
1058 }
1059
1060 static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
1061                                    size_t count, loff_t *ppos)
1062 {
1063         struct wil6210_priv *wil = file->private_data;
1064         struct wireless_dev *wdev = wil_to_wdev(wil);
1065         struct net_device *ndev = wil_to_ndev(wil);
1066
1067         if (*ppos != 0) {
1068                 wil_err(wil, "Unable to set SSID substring from [%d]\n",
1069                         (int)*ppos);
1070                 return -EINVAL;
1071         }
1072
1073         if (count > sizeof(wdev->ssid)) {
1074                 wil_err(wil, "SSID too long, len = %d\n", (int)count);
1075                 return -EINVAL;
1076         }
1077         if (netif_running(ndev)) {
1078                 wil_err(wil, "Unable to change SSID on running interface\n");
1079                 return -EINVAL;
1080         }
1081
1082         wdev->ssid_len = count;
1083         return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
1084                                       buf, count);
1085 }
1086
1087 static const struct file_operations fops_ssid = {
1088         .read = wil_read_file_ssid,
1089         .write = wil_write_file_ssid,
1090         .open  = simple_open,
1091 };
1092
1093 /*---------temp------------*/
1094 static void print_temp(struct seq_file *s, const char *prefix, s32 t)
1095 {
1096         switch (t) {
1097         case 0:
1098         case ~(u32)0:
1099                 seq_printf(s, "%s N/A\n", prefix);
1100         break;
1101         default:
1102                 seq_printf(s, "%s %s%d.%03d\n", prefix, (t < 0 ? "-" : ""),
1103                            abs(t / 1000), abs(t % 1000));
1104                 break;
1105         }
1106 }
1107
1108 static int wil_temp_debugfs_show(struct seq_file *s, void *data)
1109 {
1110         struct wil6210_priv *wil = s->private;
1111         s32 t_m, t_r;
1112         int rc = wmi_get_temperature(wil, &t_m, &t_r);
1113
1114         if (rc) {
1115                 seq_puts(s, "Failed\n");
1116                 return 0;
1117         }
1118
1119         print_temp(s, "T_mac   =", t_m);
1120         print_temp(s, "T_radio =", t_r);
1121
1122         return 0;
1123 }
1124
1125 static int wil_temp_seq_open(struct inode *inode, struct file *file)
1126 {
1127         return single_open(file, wil_temp_debugfs_show, inode->i_private);
1128 }
1129
1130 static const struct file_operations fops_temp = {
1131         .open           = wil_temp_seq_open,
1132         .release        = single_release,
1133         .read           = seq_read,
1134         .llseek         = seq_lseek,
1135 };
1136
1137 /*---------freq------------*/
1138 static int wil_freq_debugfs_show(struct seq_file *s, void *data)
1139 {
1140         struct wil6210_priv *wil = s->private;
1141         struct wireless_dev *wdev = wil_to_wdev(wil);
1142         u16 freq = wdev->chandef.chan ? wdev->chandef.chan->center_freq : 0;
1143
1144         seq_printf(s, "Freq = %d\n", freq);
1145
1146         return 0;
1147 }
1148
1149 static int wil_freq_seq_open(struct inode *inode, struct file *file)
1150 {
1151         return single_open(file, wil_freq_debugfs_show, inode->i_private);
1152 }
1153
1154 static const struct file_operations fops_freq = {
1155         .open           = wil_freq_seq_open,
1156         .release        = single_release,
1157         .read           = seq_read,
1158         .llseek         = seq_lseek,
1159 };
1160
1161 /*---------link------------*/
1162 static int wil_link_debugfs_show(struct seq_file *s, void *data)
1163 {
1164         struct wil6210_priv *wil = s->private;
1165         struct station_info sinfo;
1166         int i, rc;
1167
1168         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1169                 struct wil_sta_info *p = &wil->sta[i];
1170                 char *status = "unknown";
1171
1172                 switch (p->status) {
1173                 case wil_sta_unused:
1174                         status = "unused   ";
1175                         break;
1176                 case wil_sta_conn_pending:
1177                         status = "pending  ";
1178                         break;
1179                 case wil_sta_connected:
1180                         status = "connected";
1181                         break;
1182                 }
1183                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1184
1185                 if (p->status == wil_sta_connected) {
1186                         rc = wil_cid_fill_sinfo(wil, i, &sinfo);
1187                         if (rc)
1188                                 return rc;
1189
1190                         seq_printf(s, "  Tx_mcs = %d\n", sinfo.txrate.mcs);
1191                         seq_printf(s, "  Rx_mcs = %d\n", sinfo.rxrate.mcs);
1192                         seq_printf(s, "  SQ     = %d\n", sinfo.signal);
1193                 }
1194         }
1195
1196         return 0;
1197 }
1198
1199 static int wil_link_seq_open(struct inode *inode, struct file *file)
1200 {
1201         return single_open(file, wil_link_debugfs_show, inode->i_private);
1202 }
1203
1204 static const struct file_operations fops_link = {
1205         .open           = wil_link_seq_open,
1206         .release        = single_release,
1207         .read           = seq_read,
1208         .llseek         = seq_lseek,
1209 };
1210
1211 /*---------info------------*/
1212 static int wil_info_debugfs_show(struct seq_file *s, void *data)
1213 {
1214         struct wil6210_priv *wil = s->private;
1215         struct net_device *ndev = wil_to_ndev(wil);
1216         int is_ac = power_supply_is_system_supplied();
1217         int rx = atomic_xchg(&wil->isr_count_rx, 0);
1218         int tx = atomic_xchg(&wil->isr_count_tx, 0);
1219         static ulong rxf_old, txf_old;
1220         ulong rxf = ndev->stats.rx_packets;
1221         ulong txf = ndev->stats.tx_packets;
1222         unsigned int i;
1223
1224         /* >0 : AC; 0 : battery; <0 : error */
1225         seq_printf(s, "AC powered : %d\n", is_ac);
1226         seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);
1227         seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);
1228         rxf_old = rxf;
1229         txf_old = txf;
1230
1231 #define CHECK_QSTATE(x) (state & BIT(__QUEUE_STATE_ ## x)) ? \
1232         " " __stringify(x) : ""
1233
1234         for (i = 0; i < ndev->num_tx_queues; i++) {
1235                 struct netdev_queue *txq = netdev_get_tx_queue(ndev, i);
1236                 unsigned long state = txq->state;
1237
1238                 seq_printf(s, "Tx queue[%i] state : 0x%lx%s%s%s\n", i, state,
1239                            CHECK_QSTATE(DRV_XOFF),
1240                            CHECK_QSTATE(STACK_XOFF),
1241                            CHECK_QSTATE(FROZEN)
1242                           );
1243         }
1244 #undef CHECK_QSTATE
1245         return 0;
1246 }
1247
1248 static int wil_info_seq_open(struct inode *inode, struct file *file)
1249 {
1250         return single_open(file, wil_info_debugfs_show, inode->i_private);
1251 }
1252
1253 static const struct file_operations fops_info = {
1254         .open           = wil_info_seq_open,
1255         .release        = single_release,
1256         .read           = seq_read,
1257         .llseek         = seq_lseek,
1258 };
1259
1260 /*---------recovery------------*/
1261 /* mode = [manual|auto]
1262  * state = [idle|pending|running]
1263  */
1264 static ssize_t wil_read_file_recovery(struct file *file, char __user *user_buf,
1265                                       size_t count, loff_t *ppos)
1266 {
1267         struct wil6210_priv *wil = file->private_data;
1268         char buf[80];
1269         int n;
1270         static const char * const sstate[] = {"idle", "pending", "running"};
1271
1272         n = snprintf(buf, sizeof(buf), "mode = %s\nstate = %s\n",
1273                      no_fw_recovery ? "manual" : "auto",
1274                      sstate[wil->recovery_state]);
1275
1276         n = min_t(int, n, sizeof(buf));
1277
1278         return simple_read_from_buffer(user_buf, count, ppos,
1279                                        buf, n);
1280 }
1281
1282 static ssize_t wil_write_file_recovery(struct file *file,
1283                                        const char __user *buf_,
1284                                        size_t count, loff_t *ppos)
1285 {
1286         struct wil6210_priv *wil = file->private_data;
1287         static const char run_command[] = "run";
1288         char buf[sizeof(run_command) + 1]; /* to detect "runx" */
1289         ssize_t rc;
1290
1291         if (wil->recovery_state != fw_recovery_pending) {
1292                 wil_err(wil, "No recovery pending\n");
1293                 return -EINVAL;
1294         }
1295
1296         if (*ppos != 0) {
1297                 wil_err(wil, "Offset [%d]\n", (int)*ppos);
1298                 return -EINVAL;
1299         }
1300
1301         if (count > sizeof(buf)) {
1302                 wil_err(wil, "Input too long, len = %d\n", (int)count);
1303                 return -EINVAL;
1304         }
1305
1306         rc = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, buf_, count);
1307         if (rc < 0)
1308                 return rc;
1309
1310         buf[rc] = '\0';
1311         if (0 == strcmp(buf, run_command))
1312                 wil_set_recovery_state(wil, fw_recovery_running);
1313         else
1314                 wil_err(wil, "Bad recovery command \"%s\"\n", buf);
1315
1316         return rc;
1317 }
1318
1319 static const struct file_operations fops_recovery = {
1320         .read = wil_read_file_recovery,
1321         .write = wil_write_file_recovery,
1322         .open  = simple_open,
1323 };
1324
1325 /*---------Station matrix------------*/
1326 static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r)
1327 {
1328         int i;
1329         u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size;
1330         unsigned long long drop_dup = r->drop_dup, drop_old = r->drop_old;
1331
1332         seq_printf(s, "([%2d] %3d TU) 0x%03x [", r->buf_size, r->timeout,
1333                    r->head_seq_num);
1334         for (i = 0; i < r->buf_size; i++) {
1335                 if (i == index)
1336                         seq_printf(s, "%c", r->reorder_buf[i] ? 'O' : '|');
1337                 else
1338                         seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_');
1339         }
1340         seq_printf(s,
1341                    "] total %llu drop %llu (dup %llu + old %llu) last 0x%03x\n",
1342                    r->total, drop_dup + drop_old, drop_dup, drop_old,
1343                    r->ssn_last_drop);
1344 }
1345
1346 static void wil_print_rxtid_crypto(struct seq_file *s, int tid,
1347                                    struct wil_tid_crypto_rx *c)
1348 {
1349         int i;
1350
1351         for (i = 0; i < 4; i++) {
1352                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1353
1354                 if (cc->key_set)
1355                         goto has_keys;
1356         }
1357         return;
1358
1359 has_keys:
1360         if (tid < WIL_STA_TID_NUM)
1361                 seq_printf(s, "  [%2d] PN", tid);
1362         else
1363                 seq_puts(s, "  [GR] PN");
1364
1365         for (i = 0; i < 4; i++) {
1366                 struct wil_tid_crypto_rx_single *cc = &c->key_id[i];
1367
1368                 seq_printf(s, " [%i%s]%6phN", i, cc->key_set ? "+" : "-",
1369                            cc->pn);
1370         }
1371         seq_puts(s, "\n");
1372 }
1373
1374 static int wil_sta_debugfs_show(struct seq_file *s, void *data)
1375 __acquires(&p->tid_rx_lock) __releases(&p->tid_rx_lock)
1376 {
1377         struct wil6210_priv *wil = s->private;
1378         int i, tid, mcs;
1379
1380         for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1381                 struct wil_sta_info *p = &wil->sta[i];
1382                 char *status = "unknown";
1383
1384                 switch (p->status) {
1385                 case wil_sta_unused:
1386                         status = "unused   ";
1387                         break;
1388                 case wil_sta_conn_pending:
1389                         status = "pending  ";
1390                         break;
1391                 case wil_sta_connected:
1392                         status = "connected";
1393                         break;
1394                 }
1395                 seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
1396
1397                 if (p->status == wil_sta_connected) {
1398                         spin_lock_bh(&p->tid_rx_lock);
1399                         for (tid = 0; tid < WIL_STA_TID_NUM; tid++) {
1400                                 struct wil_tid_ampdu_rx *r = p->tid_rx[tid];
1401                                 struct wil_tid_crypto_rx *c =
1402                                                 &p->tid_crypto_rx[tid];
1403
1404                                 if (r) {
1405                                         seq_printf(s, "  [%2d] ", tid);
1406                                         wil_print_rxtid(s, r);
1407                                 }
1408
1409                                 wil_print_rxtid_crypto(s, tid, c);
1410                         }
1411                         wil_print_rxtid_crypto(s, WIL_STA_TID_NUM,
1412                                                &p->group_crypto_rx);
1413                         spin_unlock_bh(&p->tid_rx_lock);
1414                         seq_printf(s,
1415                                    "Rx invalid frame: non-data %lu, short %lu, large %lu, replay %lu\n",
1416                                    p->stats.rx_non_data_frame,
1417                                    p->stats.rx_short_frame,
1418                                    p->stats.rx_large_frame,
1419                                    p->stats.rx_replay);
1420
1421                         seq_puts(s, "Rx/MCS:");
1422                         for (mcs = 0; mcs < ARRAY_SIZE(p->stats.rx_per_mcs);
1423                              mcs++)
1424                                 seq_printf(s, " %lld",
1425                                            p->stats.rx_per_mcs[mcs]);
1426                         seq_puts(s, "\n");
1427                 }
1428         }
1429
1430         return 0;
1431 }
1432
1433 static int wil_sta_seq_open(struct inode *inode, struct file *file)
1434 {
1435         return single_open(file, wil_sta_debugfs_show, inode->i_private);
1436 }
1437
1438 static const struct file_operations fops_sta = {
1439         .open           = wil_sta_seq_open,
1440         .release        = single_release,
1441         .read           = seq_read,
1442         .llseek         = seq_lseek,
1443 };
1444
1445 static ssize_t wil_read_file_led_cfg(struct file *file, char __user *user_buf,
1446                                      size_t count, loff_t *ppos)
1447 {
1448         char buf[80];
1449         int n;
1450
1451         n = snprintf(buf, sizeof(buf),
1452                      "led_id is set to %d, echo 1 to enable, 0 to disable\n",
1453                      led_id);
1454
1455         n = min_t(int, n, sizeof(buf));
1456
1457         return simple_read_from_buffer(user_buf, count, ppos,
1458                                        buf, n);
1459 }
1460
1461 static ssize_t wil_write_file_led_cfg(struct file *file,
1462                                       const char __user *buf_,
1463                                       size_t count, loff_t *ppos)
1464 {
1465         struct wil6210_priv *wil = file->private_data;
1466         int val;
1467         int rc;
1468
1469         rc = kstrtoint_from_user(buf_, count, 0, &val);
1470         if (rc) {
1471                 wil_err(wil, "Invalid argument\n");
1472                 return rc;
1473         }
1474
1475         wil_info(wil, "%s led %d\n", val ? "Enabling" : "Disabling", led_id);
1476         rc = wmi_led_cfg(wil, val);
1477         if (rc) {
1478                 wil_info(wil, "%s led %d failed\n",
1479                          val ? "Enabling" : "Disabling", led_id);
1480                 return rc;
1481         }
1482
1483         return count;
1484 }
1485
1486 static const struct file_operations fops_led_cfg = {
1487         .read = wil_read_file_led_cfg,
1488         .write = wil_write_file_led_cfg,
1489         .open  = simple_open,
1490 };
1491
1492 /* led_blink_time, write:
1493  * "<blink_on_slow> <blink_off_slow> <blink_on_med> <blink_off_med> <blink_on_fast> <blink_off_fast>
1494  */
1495 static ssize_t wil_write_led_blink_time(struct file *file,
1496                                         const char __user *buf,
1497                                         size_t len, loff_t *ppos)
1498 {
1499         int rc;
1500         char *kbuf = kmalloc(len + 1, GFP_KERNEL);
1501
1502         if (!kbuf)
1503                 return -ENOMEM;
1504
1505         rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
1506         if (rc != len) {
1507                 kfree(kbuf);
1508                 return rc >= 0 ? -EIO : rc;
1509         }
1510
1511         kbuf[len] = '\0';
1512         rc = sscanf(kbuf, "%d %d %d %d %d %d",
1513                     &led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1514                     &led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1515                     &led_blink_time[WIL_LED_TIME_MED].on_ms,
1516                     &led_blink_time[WIL_LED_TIME_MED].off_ms,
1517                     &led_blink_time[WIL_LED_TIME_FAST].on_ms,
1518                     &led_blink_time[WIL_LED_TIME_FAST].off_ms);
1519         kfree(kbuf);
1520
1521         if (rc < 0)
1522                 return rc;
1523         if (rc < 6)
1524                 return -EINVAL;
1525
1526         return len;
1527 }
1528
1529 static ssize_t wil_read_led_blink_time(struct file *file, char __user *user_buf,
1530                                        size_t count, loff_t *ppos)
1531 {
1532         static char text[400];
1533
1534         snprintf(text, sizeof(text),
1535                  "To set led blink on/off time variables write:\n"
1536                  "<blink_on_slow> <blink_off_slow> <blink_on_med> "
1537                  "<blink_off_med> <blink_on_fast> <blink_off_fast>\n"
1538                  "The current values are:\n"
1539                  "%d %d %d %d %d %d\n",
1540                  led_blink_time[WIL_LED_TIME_SLOW].on_ms,
1541                  led_blink_time[WIL_LED_TIME_SLOW].off_ms,
1542                  led_blink_time[WIL_LED_TIME_MED].on_ms,
1543                  led_blink_time[WIL_LED_TIME_MED].off_ms,
1544                  led_blink_time[WIL_LED_TIME_FAST].on_ms,
1545                  led_blink_time[WIL_LED_TIME_FAST].off_ms);
1546
1547         return simple_read_from_buffer(user_buf, count, ppos, text,
1548                                        sizeof(text));
1549 }
1550
1551 static const struct file_operations fops_led_blink_time = {
1552         .read = wil_read_led_blink_time,
1553         .write = wil_write_led_blink_time,
1554         .open  = simple_open,
1555 };
1556
1557 /*---------FW capabilities------------*/
1558 static int wil_fw_capabilities_debugfs_show(struct seq_file *s, void *data)
1559 {
1560         struct wil6210_priv *wil = s->private;
1561
1562         seq_printf(s, "fw_capabilities : %*pb\n", WMI_FW_CAPABILITY_MAX,
1563                    wil->fw_capabilities);
1564
1565         return 0;
1566 }
1567
1568 static int wil_fw_capabilities_seq_open(struct inode *inode, struct file *file)
1569 {
1570         return single_open(file, wil_fw_capabilities_debugfs_show,
1571                            inode->i_private);
1572 }
1573
1574 static const struct file_operations fops_fw_capabilities = {
1575         .open           = wil_fw_capabilities_seq_open,
1576         .release        = single_release,
1577         .read           = seq_read,
1578         .llseek         = seq_lseek,
1579 };
1580
1581 /*---------FW version------------*/
1582 static int wil_fw_version_debugfs_show(struct seq_file *s, void *data)
1583 {
1584         struct wil6210_priv *wil = s->private;
1585
1586         if (wil->fw_version[0])
1587                 seq_printf(s, "%s\n", wil->fw_version);
1588         else
1589                 seq_puts(s, "N/A\n");
1590
1591         return 0;
1592 }
1593
1594 static int wil_fw_version_seq_open(struct inode *inode, struct file *file)
1595 {
1596         return single_open(file, wil_fw_version_debugfs_show,
1597                            inode->i_private);
1598 }
1599
1600 static const struct file_operations fops_fw_version = {
1601         .open           = wil_fw_version_seq_open,
1602         .release        = single_release,
1603         .read           = seq_read,
1604         .llseek         = seq_lseek,
1605 };
1606
1607 /*----------------*/
1608 static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil,
1609                                        struct dentry *dbg)
1610 {
1611         int i;
1612         char name[32];
1613
1614         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
1615                 struct wil_blob_wrapper *wil_blob = &wil->blobs[i];
1616                 struct debugfs_blob_wrapper *blob = &wil_blob->blob;
1617                 const struct fw_map *map = &fw_mapping[i];
1618
1619                 if (!map->name)
1620                         continue;
1621
1622                 wil_blob->wil = wil;
1623                 blob->data = (void * __force)wil->csr + HOSTADDR(map->host);
1624                 blob->size = map->to - map->from;
1625                 snprintf(name, sizeof(name), "blob_%s", map->name);
1626                 wil_debugfs_create_ioblob(name, S_IRUGO, dbg, wil_blob);
1627         }
1628 }
1629
1630 /* misc files */
1631 static const struct {
1632         const char *name;
1633         umode_t mode;
1634         const struct file_operations *fops;
1635 } dbg_files[] = {
1636         {"mbox",        S_IRUGO,                &fops_mbox},
1637         {"vrings",      S_IRUGO,                &fops_vring},
1638         {"stations",    S_IRUGO,                &fops_sta},
1639         {"desc",        S_IRUGO,                &fops_txdesc},
1640         {"bf",          S_IRUGO,                &fops_bf},
1641         {"ssid",        S_IRUGO | S_IWUSR,      &fops_ssid},
1642         {"mem_val",     S_IRUGO,                &fops_memread},
1643         {"reset",                 S_IWUSR,      &fops_reset},
1644         {"rxon",                  S_IWUSR,      &fops_rxon},
1645         {"tx_mgmt",               S_IWUSR,      &fops_txmgmt},
1646         {"wmi_send",              S_IWUSR,      &fops_wmi},
1647         {"back",        S_IRUGO | S_IWUSR,      &fops_back},
1648         {"pmccfg",      S_IRUGO | S_IWUSR,      &fops_pmccfg},
1649         {"pmcdata",     S_IRUGO,                &fops_pmcdata},
1650         {"temp",        S_IRUGO,                &fops_temp},
1651         {"freq",        S_IRUGO,                &fops_freq},
1652         {"link",        S_IRUGO,                &fops_link},
1653         {"info",        S_IRUGO,                &fops_info},
1654         {"recovery",    S_IRUGO | S_IWUSR,      &fops_recovery},
1655         {"led_cfg",     S_IRUGO | S_IWUSR,      &fops_led_cfg},
1656         {"led_blink_time",      S_IRUGO | S_IWUSR,      &fops_led_blink_time},
1657         {"fw_capabilities",     S_IRUGO,        &fops_fw_capabilities},
1658         {"fw_version",  S_IRUGO,                &fops_fw_version},
1659 };
1660
1661 static void wil6210_debugfs_init_files(struct wil6210_priv *wil,
1662                                        struct dentry *dbg)
1663 {
1664         int i;
1665
1666         for (i = 0; i < ARRAY_SIZE(dbg_files); i++)
1667                 debugfs_create_file(dbg_files[i].name, dbg_files[i].mode, dbg,
1668                                     wil, dbg_files[i].fops);
1669 }
1670
1671 /* interrupt control blocks */
1672 static const struct {
1673         const char *name;
1674         u32 icr_off;
1675 } dbg_icr[] = {
1676         {"USER_ICR",            HOSTADDR(RGF_USER_USER_ICR)},
1677         {"DMA_EP_TX_ICR",       HOSTADDR(RGF_DMA_EP_TX_ICR)},
1678         {"DMA_EP_RX_ICR",       HOSTADDR(RGF_DMA_EP_RX_ICR)},
1679         {"DMA_EP_MISC_ICR",     HOSTADDR(RGF_DMA_EP_MISC_ICR)},
1680 };
1681
1682 static void wil6210_debugfs_init_isr(struct wil6210_priv *wil,
1683                                      struct dentry *dbg)
1684 {
1685         int i;
1686
1687         for (i = 0; i < ARRAY_SIZE(dbg_icr); i++)
1688                 wil6210_debugfs_create_ISR(wil, dbg_icr[i].name, dbg,
1689                                            dbg_icr[i].icr_off);
1690 }
1691
1692 #define WIL_FIELD(name, mode, type) { __stringify(name), mode, \
1693         offsetof(struct wil6210_priv, name), type}
1694
1695 /* fields in struct wil6210_priv */
1696 static const struct dbg_off dbg_wil_off[] = {
1697         WIL_FIELD(privacy,      S_IRUGO,                doff_u32),
1698         WIL_FIELD(status[0],    S_IRUGO | S_IWUSR,      doff_ulong),
1699         WIL_FIELD(hw_version,   S_IRUGO,                doff_x32),
1700         WIL_FIELD(recovery_count, S_IRUGO,              doff_u32),
1701         WIL_FIELD(ap_isolate,   S_IRUGO,                doff_u32),
1702         WIL_FIELD(discovery_mode, S_IRUGO | S_IWUSR,    doff_u8),
1703         {},
1704 };
1705
1706 static const struct dbg_off dbg_wil_regs[] = {
1707         {"RGF_MAC_MTRL_COUNTER_0", S_IRUGO, HOSTADDR(RGF_MAC_MTRL_COUNTER_0),
1708                 doff_io32},
1709         {"RGF_USER_USAGE_1", S_IRUGO, HOSTADDR(RGF_USER_USAGE_1), doff_io32},
1710         {},
1711 };
1712
1713 /* static parameters */
1714 static const struct dbg_off dbg_statics[] = {
1715         {"desc_index",  S_IRUGO | S_IWUSR, (ulong)&dbg_txdesc_index, doff_u32},
1716         {"vring_index", S_IRUGO | S_IWUSR, (ulong)&dbg_vring_index, doff_u32},
1717         {"mem_addr",    S_IRUGO | S_IWUSR, (ulong)&mem_addr, doff_u32},
1718         {"vring_idle_trsh", S_IRUGO | S_IWUSR, (ulong)&vring_idle_trsh,
1719          doff_u32},
1720         {"led_polarity", S_IRUGO | S_IWUSR, (ulong)&led_polarity, doff_u8},
1721         {},
1722 };
1723
1724 int wil6210_debugfs_init(struct wil6210_priv *wil)
1725 {
1726         struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME,
1727                         wil_to_wiphy(wil)->debugfsdir);
1728
1729         if (IS_ERR_OR_NULL(dbg))
1730                 return -ENODEV;
1731
1732         wil_pmc_init(wil);
1733
1734         wil6210_debugfs_init_files(wil, dbg);
1735         wil6210_debugfs_init_isr(wil, dbg);
1736         wil6210_debugfs_init_blobs(wil, dbg);
1737         wil6210_debugfs_init_offset(wil, dbg, wil, dbg_wil_off);
1738         wil6210_debugfs_init_offset(wil, dbg, (void * __force)wil->csr,
1739                                     dbg_wil_regs);
1740         wil6210_debugfs_init_offset(wil, dbg, NULL, dbg_statics);
1741
1742         wil6210_debugfs_create_pseudo_ISR(wil, dbg);
1743
1744         wil6210_debugfs_create_ITR_CNT(wil, dbg);
1745
1746         return 0;
1747 }
1748
1749 void wil6210_debugfs_remove(struct wil6210_priv *wil)
1750 {
1751         debugfs_remove_recursive(wil->debug);
1752         wil->debug = NULL;
1753
1754         /* free pmc memory without sending command to fw, as it will
1755          * be reset on the way down anyway
1756          */
1757         wil_pmc_free(wil, false);
1758 }