1 /* 2 * Copyright (c) 2012 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 23 #include "wil6210.h" 24 #include "txrx.h" 25 26 /* Nasty hack. Better have per device instances */ 27 static u32 mem_addr; 28 static u32 dbg_txdesc_index; 29 30 static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil, 31 const char *name, struct vring *vring) 32 { 33 void __iomem *x = wmi_addr(wil, vring->hwtail); 34 35 seq_printf(s, "VRING %s = {\n", name); 36 seq_printf(s, " pa = 0x%016llx\n", (unsigned long long)vring->pa); 37 seq_printf(s, " va = 0x%p\n", vring->va); 38 seq_printf(s, " size = %d\n", vring->size); 39 seq_printf(s, " swtail = %d\n", vring->swtail); 40 seq_printf(s, " swhead = %d\n", vring->swhead); 41 seq_printf(s, " hwtail = [0x%08x] -> ", vring->hwtail); 42 if (x) 43 seq_printf(s, "0x%08x\n", ioread32(x)); 44 else 45 seq_printf(s, "???\n"); 46 47 if (vring->va && (vring->size < 1025)) { 48 uint i; 49 for (i = 0; i < vring->size; i++) { 50 volatile struct vring_tx_desc *d = &vring->va[i].tx; 51 if ((i % 64) == 0 && (i != 0)) 52 seq_printf(s, "\n"); 53 seq_printf(s, "%s", (d->dma.status & BIT(0)) ? 54 "S" : (vring->ctx[i] ? "H" : "h")); 55 } 56 seq_printf(s, "\n"); 57 } 58 seq_printf(s, "}\n"); 59 } 60 61 static int wil_vring_debugfs_show(struct seq_file *s, void *data) 62 { 63 uint i; 64 struct wil6210_priv *wil = s->private; 65 66 wil_print_vring(s, wil, "rx", &wil->vring_rx); 67 68 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 69 struct vring *vring = &(wil->vring_tx[i]); 70 if (vring->va) { 71 char name[10]; 72 snprintf(name, sizeof(name), "tx_%2d", i); 73 wil_print_vring(s, wil, name, vring); 74 } 75 } 76 77 return 0; 78 } 79 80 static int wil_vring_seq_open(struct inode *inode, struct file *file) 81 { 82 return single_open(file, wil_vring_debugfs_show, inode->i_private); 83 } 84 85 static const struct file_operations fops_vring = { 86 .open = wil_vring_seq_open, 87 .release = single_release, 88 .read = seq_read, 89 .llseek = seq_lseek, 90 }; 91 92 static void wil_print_ring(struct seq_file *s, const char *prefix, 93 void __iomem *off) 94 { 95 struct wil6210_priv *wil = s->private; 96 struct wil6210_mbox_ring r; 97 int rsize; 98 uint i; 99 100 wil_memcpy_fromio_32(&r, off, sizeof(r)); 101 wil_mbox_ring_le2cpus(&r); 102 /* 103 * we just read memory block from NIC. This memory may be 104 * garbage. Check validity before using it. 105 */ 106 rsize = r.size / sizeof(struct wil6210_mbox_ring_desc); 107 108 seq_printf(s, "ring %s = {\n", prefix); 109 seq_printf(s, " base = 0x%08x\n", r.base); 110 seq_printf(s, " size = 0x%04x bytes -> %d entries\n", r.size, rsize); 111 seq_printf(s, " tail = 0x%08x\n", r.tail); 112 seq_printf(s, " head = 0x%08x\n", r.head); 113 seq_printf(s, " entry size = %d\n", r.entry_size); 114 115 if (r.size % sizeof(struct wil6210_mbox_ring_desc)) { 116 seq_printf(s, " ??? size is not multiple of %zd, garbage?\n", 117 sizeof(struct wil6210_mbox_ring_desc)); 118 goto out; 119 } 120 121 if (!wmi_addr(wil, r.base) || 122 !wmi_addr(wil, r.tail) || 123 !wmi_addr(wil, r.head)) { 124 seq_printf(s, " ??? pointers are garbage?\n"); 125 goto out; 126 } 127 128 for (i = 0; i < rsize; i++) { 129 struct wil6210_mbox_ring_desc d; 130 struct wil6210_mbox_hdr hdr; 131 size_t delta = i * sizeof(d); 132 void __iomem *x = wil->csr + HOSTADDR(r.base) + delta; 133 134 wil_memcpy_fromio_32(&d, x, sizeof(d)); 135 136 seq_printf(s, " [%2x] %s %s%s 0x%08x", i, 137 d.sync ? "F" : "E", 138 (r.tail - r.base == delta) ? "t" : " ", 139 (r.head - r.base == delta) ? "h" : " ", 140 le32_to_cpu(d.addr)); 141 if (0 == wmi_read_hdr(wil, d.addr, &hdr)) { 142 u16 len = le16_to_cpu(hdr.len); 143 seq_printf(s, " -> %04x %04x %04x %02x\n", 144 le16_to_cpu(hdr.seq), len, 145 le16_to_cpu(hdr.type), hdr.flags); 146 if (len <= MAX_MBOXITEM_SIZE) { 147 int n = 0; 148 unsigned char printbuf[16 * 3 + 2]; 149 unsigned char databuf[MAX_MBOXITEM_SIZE]; 150 void __iomem *src = wmi_buffer(wil, d.addr) + 151 sizeof(struct wil6210_mbox_hdr); 152 /* 153 * No need to check @src for validity - 154 * we already validated @d.addr while 155 * reading header 156 */ 157 wil_memcpy_fromio_32(databuf, src, len); 158 while (n < len) { 159 int l = min(len - n, 16); 160 hex_dump_to_buffer(databuf + n, l, 161 16, 1, printbuf, 162 sizeof(printbuf), 163 false); 164 seq_printf(s, " : %s\n", printbuf); 165 n += l; 166 } 167 } 168 } else { 169 seq_printf(s, "\n"); 170 } 171 } 172 out: 173 seq_printf(s, "}\n"); 174 } 175 176 static int wil_mbox_debugfs_show(struct seq_file *s, void *data) 177 { 178 struct wil6210_priv *wil = s->private; 179 180 wil_print_ring(s, "tx", wil->csr + HOST_MBOX + 181 offsetof(struct wil6210_mbox_ctl, tx)); 182 wil_print_ring(s, "rx", wil->csr + HOST_MBOX + 183 offsetof(struct wil6210_mbox_ctl, rx)); 184 185 return 0; 186 } 187 188 static int wil_mbox_seq_open(struct inode *inode, struct file *file) 189 { 190 return single_open(file, wil_mbox_debugfs_show, inode->i_private); 191 } 192 193 static const struct file_operations fops_mbox = { 194 .open = wil_mbox_seq_open, 195 .release = single_release, 196 .read = seq_read, 197 .llseek = seq_lseek, 198 }; 199 200 static int wil_debugfs_iomem_x32_set(void *data, u64 val) 201 { 202 iowrite32(val, (void __iomem *)data); 203 wmb(); /* make sure write propagated to HW */ 204 205 return 0; 206 } 207 208 static int wil_debugfs_iomem_x32_get(void *data, u64 *val) 209 { 210 *val = ioread32((void __iomem *)data); 211 212 return 0; 213 } 214 215 DEFINE_SIMPLE_ATTRIBUTE(fops_iomem_x32, wil_debugfs_iomem_x32_get, 216 wil_debugfs_iomem_x32_set, "0x%08llx\n"); 217 218 static struct dentry *wil_debugfs_create_iomem_x32(const char *name, 219 mode_t mode, 220 struct dentry *parent, 221 void __iomem *value) 222 { 223 return debugfs_create_file(name, mode, parent, (void * __force)value, 224 &fops_iomem_x32); 225 } 226 227 static int wil6210_debugfs_create_ISR(struct wil6210_priv *wil, 228 const char *name, 229 struct dentry *parent, u32 off) 230 { 231 struct dentry *d = debugfs_create_dir(name, parent); 232 233 if (IS_ERR_OR_NULL(d)) 234 return -ENODEV; 235 236 wil_debugfs_create_iomem_x32("ICC", S_IRUGO | S_IWUSR, d, 237 wil->csr + off); 238 wil_debugfs_create_iomem_x32("ICR", S_IRUGO | S_IWUSR, d, 239 wil->csr + off + 4); 240 wil_debugfs_create_iomem_x32("ICM", S_IRUGO | S_IWUSR, d, 241 wil->csr + off + 8); 242 wil_debugfs_create_iomem_x32("ICS", S_IWUSR, d, 243 wil->csr + off + 12); 244 wil_debugfs_create_iomem_x32("IMV", S_IRUGO | S_IWUSR, d, 245 wil->csr + off + 16); 246 wil_debugfs_create_iomem_x32("IMS", S_IWUSR, d, 247 wil->csr + off + 20); 248 wil_debugfs_create_iomem_x32("IMC", S_IWUSR, d, 249 wil->csr + off + 24); 250 251 return 0; 252 } 253 254 static int wil6210_debugfs_create_pseudo_ISR(struct wil6210_priv *wil, 255 struct dentry *parent) 256 { 257 struct dentry *d = debugfs_create_dir("PSEUDO_ISR", parent); 258 259 if (IS_ERR_OR_NULL(d)) 260 return -ENODEV; 261 262 wil_debugfs_create_iomem_x32("CAUSE", S_IRUGO, d, wil->csr + 263 HOSTADDR(RGF_DMA_PSEUDO_CAUSE)); 264 wil_debugfs_create_iomem_x32("MASK_SW", S_IRUGO, d, wil->csr + 265 HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_SW)); 266 wil_debugfs_create_iomem_x32("MASK_FW", S_IRUGO, d, wil->csr + 267 HOSTADDR(RGF_DMA_PSEUDO_CAUSE_MASK_FW)); 268 269 return 0; 270 } 271 272 static int wil6210_debugfs_create_ITR_CNT(struct wil6210_priv *wil, 273 struct dentry *parent) 274 { 275 struct dentry *d = debugfs_create_dir("ITR_CNT", parent); 276 277 if (IS_ERR_OR_NULL(d)) 278 return -ENODEV; 279 280 wil_debugfs_create_iomem_x32("TRSH", S_IRUGO, d, wil->csr + 281 HOSTADDR(RGF_DMA_ITR_CNT_TRSH)); 282 wil_debugfs_create_iomem_x32("DATA", S_IRUGO, d, wil->csr + 283 HOSTADDR(RGF_DMA_ITR_CNT_DATA)); 284 wil_debugfs_create_iomem_x32("CTL", S_IRUGO, d, wil->csr + 285 HOSTADDR(RGF_DMA_ITR_CNT_CRL)); 286 287 return 0; 288 } 289 290 static int wil_memread_debugfs_show(struct seq_file *s, void *data) 291 { 292 struct wil6210_priv *wil = s->private; 293 void __iomem *a = wmi_buffer(wil, cpu_to_le32(mem_addr)); 294 295 if (a) 296 seq_printf(s, "[0x%08x] = 0x%08x\n", mem_addr, ioread32(a)); 297 else 298 seq_printf(s, "[0x%08x] = INVALID\n", mem_addr); 299 300 return 0; 301 } 302 303 static int wil_memread_seq_open(struct inode *inode, struct file *file) 304 { 305 return single_open(file, wil_memread_debugfs_show, inode->i_private); 306 } 307 308 static const struct file_operations fops_memread = { 309 .open = wil_memread_seq_open, 310 .release = single_release, 311 .read = seq_read, 312 .llseek = seq_lseek, 313 }; 314 315 static int wil_default_open(struct inode *inode, struct file *file) 316 { 317 if (inode->i_private) 318 file->private_data = inode->i_private; 319 320 return 0; 321 } 322 323 static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf, 324 size_t count, loff_t *ppos) 325 { 326 enum { max_count = 4096 }; 327 struct debugfs_blob_wrapper *blob = file->private_data; 328 loff_t pos = *ppos; 329 size_t available = blob->size; 330 void *buf; 331 size_t ret; 332 333 if (pos < 0) 334 return -EINVAL; 335 336 if (pos >= available || !count) 337 return 0; 338 339 if (count > available - pos) 340 count = available - pos; 341 if (count > max_count) 342 count = max_count; 343 344 buf = kmalloc(count, GFP_KERNEL); 345 if (!buf) 346 return -ENOMEM; 347 348 wil_memcpy_fromio_32(buf, (const volatile void __iomem *)blob->data + 349 pos, count); 350 351 ret = copy_to_user(user_buf, buf, count); 352 kfree(buf); 353 if (ret == count) 354 return -EFAULT; 355 356 count -= ret; 357 *ppos = pos + count; 358 359 return count; 360 } 361 362 static const struct file_operations fops_ioblob = { 363 .read = wil_read_file_ioblob, 364 .open = wil_default_open, 365 .llseek = default_llseek, 366 }; 367 368 static 369 struct dentry *wil_debugfs_create_ioblob(const char *name, 370 mode_t mode, 371 struct dentry *parent, 372 struct debugfs_blob_wrapper *blob) 373 { 374 return debugfs_create_file(name, mode, parent, blob, &fops_ioblob); 375 } 376 /*---reset---*/ 377 static ssize_t wil_write_file_reset(struct file *file, const char __user *buf, 378 size_t len, loff_t *ppos) 379 { 380 struct wil6210_priv *wil = file->private_data; 381 struct net_device *ndev = wil_to_ndev(wil); 382 383 /** 384 * BUG: 385 * this code does NOT sync device state with the rest of system 386 * use with care, debug only!!! 387 */ 388 rtnl_lock(); 389 dev_close(ndev); 390 ndev->flags &= ~IFF_UP; 391 rtnl_unlock(); 392 wil_reset(wil); 393 394 return len; 395 } 396 397 static const struct file_operations fops_reset = { 398 .write = wil_write_file_reset, 399 .open = wil_default_open, 400 }; 401 /*---------Tx descriptor------------*/ 402 403 static int wil_txdesc_debugfs_show(struct seq_file *s, void *data) 404 { 405 struct wil6210_priv *wil = s->private; 406 struct vring *vring = &(wil->vring_tx[0]); 407 408 if (!vring->va) { 409 seq_printf(s, "No Tx VRING\n"); 410 return 0; 411 } 412 413 if (dbg_txdesc_index < vring->size) { 414 volatile struct vring_tx_desc *d = 415 &(vring->va[dbg_txdesc_index].tx); 416 volatile u32 *u = (volatile u32 *)d; 417 struct sk_buff *skb = vring->ctx[dbg_txdesc_index]; 418 419 seq_printf(s, "Tx[%3d] = {\n", dbg_txdesc_index); 420 seq_printf(s, " MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n", 421 u[0], u[1], u[2], u[3]); 422 seq_printf(s, " DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n", 423 u[4], u[5], u[6], u[7]); 424 seq_printf(s, " SKB = %p\n", skb); 425 426 if (skb) { 427 unsigned char printbuf[16 * 3 + 2]; 428 int i = 0; 429 int len = skb_headlen(skb); 430 void *p = skb->data; 431 432 seq_printf(s, " len = %d\n", len); 433 434 while (i < len) { 435 int l = min(len - i, 16); 436 hex_dump_to_buffer(p + i, l, 16, 1, printbuf, 437 sizeof(printbuf), false); 438 seq_printf(s, " : %s\n", printbuf); 439 i += l; 440 } 441 } 442 seq_printf(s, "}\n"); 443 } else { 444 seq_printf(s, "TxDesc index (%d) >= size (%d)\n", 445 dbg_txdesc_index, vring->size); 446 } 447 448 return 0; 449 } 450 451 static int wil_txdesc_seq_open(struct inode *inode, struct file *file) 452 { 453 return single_open(file, wil_txdesc_debugfs_show, inode->i_private); 454 } 455 456 static const struct file_operations fops_txdesc = { 457 .open = wil_txdesc_seq_open, 458 .release = single_release, 459 .read = seq_read, 460 .llseek = seq_lseek, 461 }; 462 463 /*---------beamforming------------*/ 464 static int wil_bf_debugfs_show(struct seq_file *s, void *data) 465 { 466 struct wil6210_priv *wil = s->private; 467 seq_printf(s, 468 "TSF : 0x%016llx\n" 469 "TxMCS : %d\n" 470 "Sectors(rx:tx) my %2d:%2d peer %2d:%2d\n", 471 wil->stats.tsf, wil->stats.bf_mcs, 472 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 473 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 474 return 0; 475 } 476 477 static int wil_bf_seq_open(struct inode *inode, struct file *file) 478 { 479 return single_open(file, wil_bf_debugfs_show, inode->i_private); 480 } 481 482 static const struct file_operations fops_bf = { 483 .open = wil_bf_seq_open, 484 .release = single_release, 485 .read = seq_read, 486 .llseek = seq_lseek, 487 }; 488 /*---------SSID------------*/ 489 static ssize_t wil_read_file_ssid(struct file *file, char __user *user_buf, 490 size_t count, loff_t *ppos) 491 { 492 struct wil6210_priv *wil = file->private_data; 493 struct wireless_dev *wdev = wil_to_wdev(wil); 494 495 return simple_read_from_buffer(user_buf, count, ppos, 496 wdev->ssid, wdev->ssid_len); 497 } 498 499 static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf, 500 size_t count, loff_t *ppos) 501 { 502 struct wil6210_priv *wil = file->private_data; 503 struct wireless_dev *wdev = wil_to_wdev(wil); 504 struct net_device *ndev = wil_to_ndev(wil); 505 506 if (*ppos != 0) { 507 wil_err(wil, "Unable to set SSID substring from [%d]\n", 508 (int)*ppos); 509 return -EINVAL; 510 } 511 512 if (count > sizeof(wdev->ssid)) { 513 wil_err(wil, "SSID too long, len = %d\n", (int)count); 514 return -EINVAL; 515 } 516 if (netif_running(ndev)) { 517 wil_err(wil, "Unable to change SSID on running interface\n"); 518 return -EINVAL; 519 } 520 521 wdev->ssid_len = count; 522 return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos, 523 buf, count); 524 } 525 526 static const struct file_operations fops_ssid = { 527 .read = wil_read_file_ssid, 528 .write = wil_write_file_ssid, 529 .open = wil_default_open, 530 }; 531 532 /*----------------*/ 533 int wil6210_debugfs_init(struct wil6210_priv *wil) 534 { 535 struct dentry *dbg = wil->debug = debugfs_create_dir(WIL_NAME, 536 wil_to_wiphy(wil)->debugfsdir); 537 538 if (IS_ERR_OR_NULL(dbg)) 539 return -ENODEV; 540 541 debugfs_create_file("mbox", S_IRUGO, dbg, wil, &fops_mbox); 542 debugfs_create_file("vrings", S_IRUGO, dbg, wil, &fops_vring); 543 debugfs_create_file("txdesc", S_IRUGO, dbg, wil, &fops_txdesc); 544 debugfs_create_u32("txdesc_index", S_IRUGO | S_IWUSR, dbg, 545 &dbg_txdesc_index); 546 debugfs_create_file("bf", S_IRUGO, dbg, wil, &fops_bf); 547 debugfs_create_file("ssid", S_IRUGO | S_IWUSR, dbg, wil, &fops_ssid); 548 debugfs_create_u32("secure_pcp", S_IRUGO | S_IWUSR, dbg, 549 &wil->secure_pcp); 550 551 wil6210_debugfs_create_ISR(wil, "USER_ICR", dbg, 552 HOSTADDR(RGF_USER_USER_ICR)); 553 wil6210_debugfs_create_ISR(wil, "DMA_EP_TX_ICR", dbg, 554 HOSTADDR(RGF_DMA_EP_TX_ICR)); 555 wil6210_debugfs_create_ISR(wil, "DMA_EP_RX_ICR", dbg, 556 HOSTADDR(RGF_DMA_EP_RX_ICR)); 557 wil6210_debugfs_create_ISR(wil, "DMA_EP_MISC_ICR", dbg, 558 HOSTADDR(RGF_DMA_EP_MISC_ICR)); 559 wil6210_debugfs_create_pseudo_ISR(wil, dbg); 560 wil6210_debugfs_create_ITR_CNT(wil, dbg); 561 562 debugfs_create_u32("mem_addr", S_IRUGO | S_IWUSR, dbg, &mem_addr); 563 debugfs_create_file("mem_val", S_IRUGO, dbg, wil, &fops_memread); 564 565 debugfs_create_file("reset", S_IWUSR, dbg, wil, &fops_reset); 566 567 wil->rgf_blob.data = (void * __force)wil->csr + 0; 568 wil->rgf_blob.size = 0xa000; 569 wil_debugfs_create_ioblob("blob_rgf", S_IRUGO, dbg, &wil->rgf_blob); 570 571 wil->fw_code_blob.data = (void * __force)wil->csr + 0x40000; 572 wil->fw_code_blob.size = 0x40000; 573 wil_debugfs_create_ioblob("blob_fw_code", S_IRUGO, dbg, 574 &wil->fw_code_blob); 575 576 wil->fw_data_blob.data = (void * __force)wil->csr + 0x80000; 577 wil->fw_data_blob.size = 0x8000; 578 wil_debugfs_create_ioblob("blob_fw_data", S_IRUGO, dbg, 579 &wil->fw_data_blob); 580 581 wil->fw_peri_blob.data = (void * __force)wil->csr + 0x88000; 582 wil->fw_peri_blob.size = 0x18000; 583 wil_debugfs_create_ioblob("blob_fw_peri", S_IRUGO, dbg, 584 &wil->fw_peri_blob); 585 586 wil->uc_code_blob.data = (void * __force)wil->csr + 0xa0000; 587 wil->uc_code_blob.size = 0x10000; 588 wil_debugfs_create_ioblob("blob_uc_code", S_IRUGO, dbg, 589 &wil->uc_code_blob); 590 591 wil->uc_data_blob.data = (void * __force)wil->csr + 0xb0000; 592 wil->uc_data_blob.size = 0x4000; 593 wil_debugfs_create_ioblob("blob_uc_data", S_IRUGO, dbg, 594 &wil->uc_data_blob); 595 596 return 0; 597 } 598 599 void wil6210_debugfs_remove(struct wil6210_priv *wil) 600 { 601 debugfs_remove_recursive(wil->debug); 602 wil->debug = NULL; 603 } 604