1 /* 2 * USB Orinoco driver 3 * 4 * Copyright (c) 2003 Manuel Estrada Sainz 5 * 6 * The contents of this file are subject to the Mozilla Public License 7 * Version 1.1 (the "License"); you may not use this file except in 8 * compliance with the License. You may obtain a copy of the License 9 * at http://www.mozilla.org/MPL/ 10 * 11 * Software distributed under the License is distributed on an "AS IS" 12 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See 13 * the License for the specific language governing rights and 14 * limitations under the License. 15 * 16 * Alternatively, the contents of this file may be used under the 17 * terms of the GNU General Public License version 2 (the "GPL"), in 18 * which case the provisions of the GPL are applicable instead of the 19 * above. If you wish to allow the use of your version of this file 20 * only under the terms of the GPL and not to allow others to use your 21 * version of this file under the MPL, indicate your decision by 22 * deleting the provisions above and replace them with the notice and 23 * other provisions required by the GPL. If you do not delete the 24 * provisions above, a recipient may use your version of this file 25 * under either the MPL or the GPL. 26 * 27 * Queueing code based on linux-wlan-ng 0.2.1-pre5 28 * 29 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. 30 * 31 * The license is the same as above. 32 * 33 * Initialy based on USB Skeleton driver - 0.7 34 * 35 * Copyright (c) 2001 Greg Kroah-Hartman (greg@kroah.com) 36 * 37 * This program is free software; you can redistribute it and/or 38 * modify it under the terms of the GNU General Public License as 39 * published by the Free Software Foundation; either version 2 of 40 * the License, or (at your option) any later version. 41 * 42 * NOTE: The original USB Skeleton driver is GPL, but all that code is 43 * gone so MPL/GPL applies. 44 */ 45 46 #define DRIVER_NAME "orinoco_usb" 47 #define PFX DRIVER_NAME ": " 48 49 #include <linux/module.h> 50 #include <linux/kernel.h> 51 #include <linux/sched.h> 52 #include <linux/signal.h> 53 #include <linux/errno.h> 54 #include <linux/poll.h> 55 #include <linux/slab.h> 56 #include <linux/fcntl.h> 57 #include <linux/spinlock.h> 58 #include <linux/list.h> 59 #include <linux/usb.h> 60 #include <linux/timer.h> 61 62 #include <linux/netdevice.h> 63 #include <linux/if_arp.h> 64 #include <linux/etherdevice.h> 65 #include <linux/wireless.h> 66 #include <linux/firmware.h> 67 #include <linux/refcount.h> 68 69 #include "mic.h" 70 #include "orinoco.h" 71 72 #ifndef URB_ASYNC_UNLINK 73 #define URB_ASYNC_UNLINK 0 74 #endif 75 76 struct header_struct { 77 /* 802.3 */ 78 u8 dest[ETH_ALEN]; 79 u8 src[ETH_ALEN]; 80 __be16 len; 81 /* 802.2 */ 82 u8 dsap; 83 u8 ssap; 84 u8 ctrl; 85 /* SNAP */ 86 u8 oui[3]; 87 __be16 ethertype; 88 } __packed; 89 90 struct ez_usb_fw { 91 u16 size; 92 const u8 *code; 93 }; 94 95 static struct ez_usb_fw firmware = { 96 .size = 0, 97 .code = NULL, 98 }; 99 100 /* Debugging macros */ 101 #undef err 102 #define err(format, arg...) \ 103 do { printk(KERN_ERR PFX format "\n", ## arg); } while (0) 104 105 MODULE_FIRMWARE("orinoco_ezusb_fw"); 106 107 /* 108 * Under some conditions, the card gets stuck and stops paying attention 109 * to the world (i.e. data communication stalls) until we do something to 110 * it. Sending an INQ_TALLIES command seems to be enough and should be 111 * harmless otherwise. This behaviour has been observed when using the 112 * driver on a systemimager client during installation. In the past a 113 * timer was used to send INQ_TALLIES commands when there was no other 114 * activity, but it was troublesome and was removed. 115 */ 116 117 #define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */ 118 #define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */ 119 #define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */ 120 #define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */ 121 122 #define USB_MELCO_VENDOR_ID 0x0411 123 #define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */ 124 #define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */ 125 #define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */ 126 127 #define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */ 128 #define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */ 129 130 #define USB_AVAYA8_VENDOR_ID 0x0D98 131 #define USB_AVAYAE_VENDOR_ID 0x0D9E 132 #define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */ 133 134 #define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */ 135 #define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */ 136 #define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */ 137 #define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */ 138 139 #define USB_ELSA_VENDOR_ID 0x05CC 140 #define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */ 141 142 #define USB_LEGEND_VENDOR_ID 0x0E7C 143 #define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */ 144 145 #define USB_SAMSUNG_VENDOR_ID 0x04E8 146 #define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */ 147 #define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */ 148 #define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */ 149 150 #define USB_IGATE_VENDOR_ID 0x0681 151 #define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */ 152 153 #define USB_FUJITSU_VENDOR_ID 0x0BF8 154 #define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */ 155 156 #define USB_2WIRE_VENDOR_ID 0x1630 157 #define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */ 158 159 160 #define EZUSB_REQUEST_FW_TRANS 0xA0 161 #define EZUSB_REQUEST_TRIGGER 0xAA 162 #define EZUSB_REQUEST_TRIG_AC 0xAC 163 #define EZUSB_CPUCS_REG 0x7F92 164 165 #define EZUSB_RID_TX 0x0700 166 #define EZUSB_RID_RX 0x0701 167 #define EZUSB_RID_INIT1 0x0702 168 #define EZUSB_RID_ACK 0x0710 169 #define EZUSB_RID_READ_PDA 0x0800 170 #define EZUSB_RID_PROG_INIT 0x0852 171 #define EZUSB_RID_PROG_SET_ADDR 0x0853 172 #define EZUSB_RID_PROG_BYTES 0x0854 173 #define EZUSB_RID_PROG_END 0x0855 174 #define EZUSB_RID_DOCMD 0x0860 175 176 /* Recognize info frames */ 177 #define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF)) 178 179 #define EZUSB_MAGIC 0x0210 180 181 #define EZUSB_FRAME_DATA 1 182 #define EZUSB_FRAME_CONTROL 2 183 184 #define DEF_TIMEOUT (3 * HZ) 185 186 #define BULK_BUF_SIZE 2048 187 188 #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) 189 190 #define FW_BUF_SIZE 64 191 #define FW_VAR_OFFSET_PTR 0x359 192 #define FW_VAR_VALUE 0 193 #define FW_HOLE_START 0x100 194 #define FW_HOLE_END 0x300 195 196 struct ezusb_packet { 197 __le16 magic; /* 0x0210 */ 198 u8 req_reply_count; 199 u8 ans_reply_count; 200 __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */ 201 __le16 size; /* transport size */ 202 __le16 crc; /* CRC up to here */ 203 __le16 hermes_len; 204 __le16 hermes_rid; 205 u8 data[]; 206 } __packed; 207 208 /* Table of devices that work or may work with this driver */ 209 static const struct usb_device_id ezusb_table[] = { 210 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)}, 211 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)}, 212 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)}, 213 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)}, 214 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)}, 215 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)}, 216 {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)}, 217 {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, 218 {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, 219 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)}, 220 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)}, 221 {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)}, 222 {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)}, 223 {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID, 224 0, 0)}, 225 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)}, 226 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)}, 227 {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)}, 228 {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)}, 229 {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)}, 230 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)}, 231 {} /* Terminating entry */ 232 }; 233 234 MODULE_DEVICE_TABLE(usb, ezusb_table); 235 236 /* Structure to hold all of our device specific stuff */ 237 struct ezusb_priv { 238 struct usb_device *udev; 239 struct net_device *dev; 240 struct mutex mtx; 241 spinlock_t req_lock; 242 struct list_head req_pending; 243 struct list_head req_active; 244 spinlock_t reply_count_lock; 245 u16 hermes_reg_fake[0x40]; 246 u8 *bap_buf; 247 struct urb *read_urb; 248 int read_pipe; 249 int write_pipe; 250 u8 reply_count; 251 }; 252 253 enum ezusb_state { 254 EZUSB_CTX_START, 255 EZUSB_CTX_QUEUED, 256 EZUSB_CTX_REQ_SUBMITTED, 257 EZUSB_CTX_REQ_COMPLETE, 258 EZUSB_CTX_RESP_RECEIVED, 259 EZUSB_CTX_REQ_TIMEOUT, 260 EZUSB_CTX_REQ_FAILED, 261 EZUSB_CTX_RESP_TIMEOUT, 262 EZUSB_CTX_REQSUBMIT_FAIL, 263 EZUSB_CTX_COMPLETE, 264 }; 265 266 struct request_context { 267 struct list_head list; 268 refcount_t refcount; 269 struct completion done; /* Signals that CTX is dead */ 270 int killed; 271 struct urb *outurb; /* OUT for req pkt */ 272 struct ezusb_priv *upriv; 273 struct ezusb_packet *buf; 274 int buf_length; 275 struct timer_list timer; /* Timeout handling */ 276 enum ezusb_state state; /* Current state */ 277 /* the RID that we will wait for */ 278 u16 out_rid; 279 u16 in_rid; 280 }; 281 282 283 /* Forward declarations */ 284 static void ezusb_ctx_complete(struct request_context *ctx); 285 static void ezusb_req_queue_run(struct ezusb_priv *upriv); 286 static void ezusb_bulk_in_callback(struct urb *urb); 287 288 static inline u8 ezusb_reply_inc(u8 count) 289 { 290 if (count < 0x7F) 291 return count + 1; 292 else 293 return 1; 294 } 295 296 static void ezusb_request_context_put(struct request_context *ctx) 297 { 298 if (!refcount_dec_and_test(&ctx->refcount)) 299 return; 300 301 WARN_ON(!ctx->done.done); 302 BUG_ON(ctx->outurb->status == -EINPROGRESS); 303 BUG_ON(timer_pending(&ctx->timer)); 304 usb_free_urb(ctx->outurb); 305 kfree(ctx->buf); 306 kfree(ctx); 307 } 308 309 static inline void ezusb_mod_timer(struct ezusb_priv *upriv, 310 struct timer_list *timer, 311 unsigned long expire) 312 { 313 if (!upriv->udev) 314 return; 315 mod_timer(timer, expire); 316 } 317 318 static void ezusb_request_timerfn(struct timer_list *t) 319 { 320 struct request_context *ctx = from_timer(ctx, t, timer); 321 322 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 323 if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) { 324 ctx->state = EZUSB_CTX_REQ_TIMEOUT; 325 } else { 326 ctx->state = EZUSB_CTX_RESP_TIMEOUT; 327 dev_dbg(&ctx->outurb->dev->dev, "couldn't unlink\n"); 328 refcount_inc(&ctx->refcount); 329 ctx->killed = 1; 330 ezusb_ctx_complete(ctx); 331 ezusb_request_context_put(ctx); 332 } 333 }; 334 335 static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv, 336 u16 out_rid, u16 in_rid) 337 { 338 struct request_context *ctx; 339 340 ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 341 if (!ctx) 342 return NULL; 343 344 ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC); 345 if (!ctx->buf) { 346 kfree(ctx); 347 return NULL; 348 } 349 ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC); 350 if (!ctx->outurb) { 351 kfree(ctx->buf); 352 kfree(ctx); 353 return NULL; 354 } 355 356 ctx->upriv = upriv; 357 ctx->state = EZUSB_CTX_START; 358 ctx->out_rid = out_rid; 359 ctx->in_rid = in_rid; 360 361 refcount_set(&ctx->refcount, 1); 362 init_completion(&ctx->done); 363 364 timer_setup(&ctx->timer, ezusb_request_timerfn, 0); 365 return ctx; 366 } 367 368 static void ezusb_ctx_complete(struct request_context *ctx) 369 { 370 struct ezusb_priv *upriv = ctx->upriv; 371 unsigned long flags; 372 373 spin_lock_irqsave(&upriv->req_lock, flags); 374 375 list_del_init(&ctx->list); 376 if (upriv->udev) { 377 spin_unlock_irqrestore(&upriv->req_lock, flags); 378 ezusb_req_queue_run(upriv); 379 spin_lock_irqsave(&upriv->req_lock, flags); 380 } 381 382 switch (ctx->state) { 383 case EZUSB_CTX_COMPLETE: 384 case EZUSB_CTX_REQSUBMIT_FAIL: 385 case EZUSB_CTX_REQ_FAILED: 386 case EZUSB_CTX_REQ_TIMEOUT: 387 case EZUSB_CTX_RESP_TIMEOUT: 388 spin_unlock_irqrestore(&upriv->req_lock, flags); 389 390 if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) { 391 struct net_device *dev = upriv->dev; 392 struct net_device_stats *stats = &dev->stats; 393 394 if (ctx->state != EZUSB_CTX_COMPLETE) 395 stats->tx_errors++; 396 else 397 stats->tx_packets++; 398 399 netif_wake_queue(dev); 400 } 401 complete_all(&ctx->done); 402 ezusb_request_context_put(ctx); 403 break; 404 405 default: 406 spin_unlock_irqrestore(&upriv->req_lock, flags); 407 if (!upriv->udev) { 408 /* This is normal, as all request contexts get flushed 409 * when the device is disconnected */ 410 err("Called, CTX not terminating, but device gone"); 411 complete_all(&ctx->done); 412 ezusb_request_context_put(ctx); 413 break; 414 } 415 416 err("Called, CTX not in terminating state."); 417 /* Things are really bad if this happens. Just leak 418 * the CTX because it may still be linked to the 419 * queue or the OUT urb may still be active. 420 * Just leaking at least prevents an Oops or Panic. 421 */ 422 break; 423 } 424 } 425 426 /* 427 * ezusb_req_queue_run: 428 * Description: 429 * Note: Only one active CTX at any one time, because there's no 430 * other (reliable) way to match the response URB to the correct 431 * CTX. 432 */ 433 static void ezusb_req_queue_run(struct ezusb_priv *upriv) 434 { 435 unsigned long flags; 436 struct request_context *ctx; 437 int result; 438 439 spin_lock_irqsave(&upriv->req_lock, flags); 440 441 if (!list_empty(&upriv->req_active)) 442 goto unlock; 443 444 if (list_empty(&upriv->req_pending)) 445 goto unlock; 446 447 ctx = 448 list_entry(upriv->req_pending.next, struct request_context, 449 list); 450 451 if (!ctx->upriv->udev) 452 goto unlock; 453 454 /* We need to split this off to avoid a race condition */ 455 list_move_tail(&ctx->list, &upriv->req_active); 456 457 if (ctx->state == EZUSB_CTX_QUEUED) { 458 refcount_inc(&ctx->refcount); 459 result = usb_submit_urb(ctx->outurb, GFP_ATOMIC); 460 if (result) { 461 ctx->state = EZUSB_CTX_REQSUBMIT_FAIL; 462 463 spin_unlock_irqrestore(&upriv->req_lock, flags); 464 465 err("Fatal, failed to submit command urb." 466 " error=%d\n", result); 467 468 ezusb_ctx_complete(ctx); 469 ezusb_request_context_put(ctx); 470 goto done; 471 } 472 473 ctx->state = EZUSB_CTX_REQ_SUBMITTED; 474 ezusb_mod_timer(ctx->upriv, &ctx->timer, 475 jiffies + DEF_TIMEOUT); 476 } 477 478 unlock: 479 spin_unlock_irqrestore(&upriv->req_lock, flags); 480 481 done: 482 return; 483 } 484 485 static void ezusb_req_enqueue_run(struct ezusb_priv *upriv, 486 struct request_context *ctx) 487 { 488 unsigned long flags; 489 490 spin_lock_irqsave(&upriv->req_lock, flags); 491 492 if (!ctx->upriv->udev) { 493 spin_unlock_irqrestore(&upriv->req_lock, flags); 494 goto done; 495 } 496 refcount_inc(&ctx->refcount); 497 list_add_tail(&ctx->list, &upriv->req_pending); 498 spin_unlock_irqrestore(&upriv->req_lock, flags); 499 500 ctx->state = EZUSB_CTX_QUEUED; 501 ezusb_req_queue_run(upriv); 502 503 done: 504 return; 505 } 506 507 static void ezusb_request_out_callback(struct urb *urb) 508 { 509 unsigned long flags; 510 enum ezusb_state state; 511 struct request_context *ctx = urb->context; 512 struct ezusb_priv *upriv = ctx->upriv; 513 514 spin_lock_irqsave(&upriv->req_lock, flags); 515 516 del_timer(&ctx->timer); 517 518 if (ctx->killed) { 519 spin_unlock_irqrestore(&upriv->req_lock, flags); 520 pr_warn("interrupt called with dead ctx\n"); 521 goto out; 522 } 523 524 state = ctx->state; 525 526 if (urb->status == 0) { 527 switch (state) { 528 case EZUSB_CTX_REQ_SUBMITTED: 529 if (ctx->in_rid) { 530 ctx->state = EZUSB_CTX_REQ_COMPLETE; 531 /* reply URB still pending */ 532 ezusb_mod_timer(upriv, &ctx->timer, 533 jiffies + DEF_TIMEOUT); 534 spin_unlock_irqrestore(&upriv->req_lock, 535 flags); 536 break; 537 } 538 fallthrough; 539 case EZUSB_CTX_RESP_RECEIVED: 540 /* IN already received before this OUT-ACK */ 541 ctx->state = EZUSB_CTX_COMPLETE; 542 spin_unlock_irqrestore(&upriv->req_lock, flags); 543 ezusb_ctx_complete(ctx); 544 break; 545 546 default: 547 spin_unlock_irqrestore(&upriv->req_lock, flags); 548 err("Unexpected state(0x%x, %d) in OUT URB", 549 state, urb->status); 550 break; 551 } 552 } else { 553 /* If someone cancels the OUT URB then its status 554 * should be either -ECONNRESET or -ENOENT. 555 */ 556 switch (state) { 557 case EZUSB_CTX_REQ_SUBMITTED: 558 case EZUSB_CTX_RESP_RECEIVED: 559 ctx->state = EZUSB_CTX_REQ_FAILED; 560 fallthrough; 561 562 case EZUSB_CTX_REQ_FAILED: 563 case EZUSB_CTX_REQ_TIMEOUT: 564 spin_unlock_irqrestore(&upriv->req_lock, flags); 565 566 ezusb_ctx_complete(ctx); 567 break; 568 569 default: 570 spin_unlock_irqrestore(&upriv->req_lock, flags); 571 572 err("Unexpected state(0x%x, %d) in OUT URB", 573 state, urb->status); 574 break; 575 } 576 } 577 out: 578 ezusb_request_context_put(ctx); 579 } 580 581 static void ezusb_request_in_callback(struct ezusb_priv *upriv, 582 struct urb *urb) 583 { 584 struct ezusb_packet *ans = urb->transfer_buffer; 585 struct request_context *ctx = NULL; 586 enum ezusb_state state; 587 unsigned long flags; 588 589 /* Find the CTX on the active queue that requested this URB */ 590 spin_lock_irqsave(&upriv->req_lock, flags); 591 if (upriv->udev) { 592 struct list_head *item; 593 594 list_for_each(item, &upriv->req_active) { 595 struct request_context *c; 596 int reply_count; 597 598 c = list_entry(item, struct request_context, list); 599 reply_count = 600 ezusb_reply_inc(c->buf->req_reply_count); 601 if ((ans->ans_reply_count == reply_count) 602 && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) { 603 ctx = c; 604 break; 605 } 606 netdev_dbg(upriv->dev, "Skipped (0x%x/0x%x) (%d/%d)\n", 607 le16_to_cpu(ans->hermes_rid), c->in_rid, 608 ans->ans_reply_count, reply_count); 609 } 610 } 611 612 if (ctx == NULL) { 613 spin_unlock_irqrestore(&upriv->req_lock, flags); 614 err("%s: got unexpected RID: 0x%04X", __func__, 615 le16_to_cpu(ans->hermes_rid)); 616 ezusb_req_queue_run(upriv); 617 return; 618 } 619 620 /* The data we want is in the in buffer, exchange */ 621 urb->transfer_buffer = ctx->buf; 622 ctx->buf = (void *) ans; 623 ctx->buf_length = urb->actual_length; 624 625 state = ctx->state; 626 switch (state) { 627 case EZUSB_CTX_REQ_SUBMITTED: 628 /* We have received our response URB before 629 * our request has been acknowledged. Do NOT 630 * destroy our CTX yet, because our OUT URB 631 * is still alive ... 632 */ 633 ctx->state = EZUSB_CTX_RESP_RECEIVED; 634 spin_unlock_irqrestore(&upriv->req_lock, flags); 635 636 /* Let the machine continue running. */ 637 break; 638 639 case EZUSB_CTX_REQ_COMPLETE: 640 /* This is the usual path: our request 641 * has already been acknowledged, and 642 * we have now received the reply. 643 */ 644 ctx->state = EZUSB_CTX_COMPLETE; 645 646 /* Stop the intimer */ 647 del_timer(&ctx->timer); 648 spin_unlock_irqrestore(&upriv->req_lock, flags); 649 650 /* Call the completion handler */ 651 ezusb_ctx_complete(ctx); 652 break; 653 654 default: 655 spin_unlock_irqrestore(&upriv->req_lock, flags); 656 657 pr_warn("Matched IN URB, unexpected context state(0x%x)\n", 658 state); 659 /* Throw this CTX away and try submitting another */ 660 del_timer(&ctx->timer); 661 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 662 usb_unlink_urb(ctx->outurb); 663 ezusb_req_queue_run(upriv); 664 break; 665 } /* switch */ 666 } 667 668 669 static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, 670 struct request_context *ctx) 671 { 672 switch (ctx->state) { 673 case EZUSB_CTX_QUEUED: 674 case EZUSB_CTX_REQ_SUBMITTED: 675 case EZUSB_CTX_REQ_COMPLETE: 676 case EZUSB_CTX_RESP_RECEIVED: 677 if (in_softirq()) { 678 /* If we get called from a timer, timeout timers don't 679 * get the chance to run themselves. So we make sure 680 * that we don't sleep for ever */ 681 int msecs = DEF_TIMEOUT * (1000 / HZ); 682 683 while (!try_wait_for_completion(&ctx->done) && msecs--) 684 udelay(1000); 685 } else { 686 wait_for_completion(&ctx->done); 687 } 688 break; 689 default: 690 /* Done or failed - nothing to wait for */ 691 break; 692 } 693 } 694 695 static inline u16 build_crc(struct ezusb_packet *data) 696 { 697 u16 crc = 0; 698 u8 *bytes = (u8 *)data; 699 int i; 700 701 for (i = 0; i < 8; i++) 702 crc = (crc << 1) + bytes[i]; 703 704 return crc; 705 } 706 707 /* 708 * ezusb_fill_req: 709 * 710 * if data == NULL and length > 0 the data is assumed to be already in 711 * the target buffer and only the header is filled. 712 * 713 */ 714 static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid, 715 const void *data, u16 frame_type, u8 reply_count) 716 { 717 int total_size = sizeof(*req) + length; 718 719 BUG_ON(total_size > BULK_BUF_SIZE); 720 721 req->magic = cpu_to_le16(EZUSB_MAGIC); 722 req->req_reply_count = reply_count; 723 req->ans_reply_count = 0; 724 req->frame_type = cpu_to_le16(frame_type); 725 req->size = cpu_to_le16(length + 4); 726 req->crc = cpu_to_le16(build_crc(req)); 727 req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length)); 728 req->hermes_rid = cpu_to_le16(rid); 729 if (data) 730 memcpy(req->data, data, length); 731 return total_size; 732 } 733 734 static int ezusb_submit_in_urb(struct ezusb_priv *upriv) 735 { 736 int retval = 0; 737 void *cur_buf = upriv->read_urb->transfer_buffer; 738 739 if (upriv->read_urb->status == -EINPROGRESS) { 740 netdev_dbg(upriv->dev, "urb busy, not resubmiting\n"); 741 retval = -EBUSY; 742 goto exit; 743 } 744 usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe, 745 cur_buf, BULK_BUF_SIZE, 746 ezusb_bulk_in_callback, upriv); 747 upriv->read_urb->transfer_flags = 0; 748 retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC); 749 if (retval) 750 err("%s submit failed %d", __func__, retval); 751 752 exit: 753 return retval; 754 } 755 756 static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) 757 { 758 int ret; 759 u8 *res_val = NULL; 760 761 if (!upriv->udev) { 762 err("%s: !upriv->udev", __func__); 763 return -EFAULT; 764 } 765 766 res_val = kmalloc(sizeof(*res_val), GFP_KERNEL); 767 768 if (!res_val) 769 return -ENOMEM; 770 771 *res_val = reset; /* avoid argument promotion */ 772 773 ret = usb_control_msg(upriv->udev, 774 usb_sndctrlpipe(upriv->udev, 0), 775 EZUSB_REQUEST_FW_TRANS, 776 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 777 USB_DIR_OUT, EZUSB_CPUCS_REG, 0, res_val, 778 sizeof(*res_val), DEF_TIMEOUT); 779 780 kfree(res_val); 781 782 return ret; 783 } 784 785 static int ezusb_firmware_download(struct ezusb_priv *upriv, 786 struct ez_usb_fw *fw) 787 { 788 u8 *fw_buffer; 789 int retval, addr; 790 int variant_offset; 791 792 fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); 793 if (!fw_buffer) { 794 printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); 795 return -ENOMEM; 796 } 797 /* 798 * This byte is 1 and should be replaced with 0. The offset is 799 * 0x10AD in version 0.0.6. The byte in question should follow 800 * the end of the code pointed to by the jump in the beginning 801 * of the firmware. Also, it is read by code located at 0x358. 802 */ 803 variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]); 804 if (variant_offset >= fw->size) { 805 printk(KERN_ERR PFX "Invalid firmware variant offset: " 806 "0x%04x\n", variant_offset); 807 retval = -EINVAL; 808 goto fail; 809 } 810 811 retval = ezusb_8051_cpucs(upriv, 1); 812 if (retval < 0) 813 goto fail; 814 for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) { 815 /* 0x100-0x300 should be left alone, it contains card 816 * specific data, like USB enumeration information */ 817 if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END)) 818 continue; 819 820 memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE); 821 if (variant_offset >= addr && 822 variant_offset < addr + FW_BUF_SIZE) { 823 netdev_dbg(upriv->dev, 824 "Patching card_variant byte at 0x%04X\n", 825 variant_offset); 826 fw_buffer[variant_offset - addr] = FW_VAR_VALUE; 827 } 828 retval = usb_control_msg(upriv->udev, 829 usb_sndctrlpipe(upriv->udev, 0), 830 EZUSB_REQUEST_FW_TRANS, 831 USB_TYPE_VENDOR | USB_RECIP_DEVICE 832 | USB_DIR_OUT, 833 addr, 0x0, 834 fw_buffer, FW_BUF_SIZE, 835 DEF_TIMEOUT); 836 837 if (retval < 0) 838 goto fail; 839 } 840 retval = ezusb_8051_cpucs(upriv, 0); 841 if (retval < 0) 842 goto fail; 843 844 goto exit; 845 fail: 846 printk(KERN_ERR PFX "Firmware download failed, error %d\n", 847 retval); 848 exit: 849 kfree(fw_buffer); 850 return retval; 851 } 852 853 static int ezusb_access_ltv(struct ezusb_priv *upriv, 854 struct request_context *ctx, 855 u16 length, const void *data, u16 frame_type, 856 void *ans_buff, unsigned ans_size, u16 *ans_length) 857 { 858 int req_size; 859 int retval = 0; 860 enum ezusb_state state; 861 862 if (!upriv->udev) { 863 retval = -ENODEV; 864 goto exit; 865 } 866 867 if (upriv->read_urb->status != -EINPROGRESS) 868 err("%s: in urb not pending", __func__); 869 870 /* protect upriv->reply_count, guarantee sequential numbers */ 871 spin_lock_bh(&upriv->reply_count_lock); 872 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, 873 frame_type, upriv->reply_count); 874 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, 875 ctx->buf, req_size, 876 ezusb_request_out_callback, ctx); 877 878 if (ctx->in_rid) 879 upriv->reply_count = ezusb_reply_inc(upriv->reply_count); 880 881 ezusb_req_enqueue_run(upriv, ctx); 882 883 spin_unlock_bh(&upriv->reply_count_lock); 884 885 if (ctx->in_rid) 886 ezusb_req_ctx_wait(upriv, ctx); 887 888 state = ctx->state; 889 switch (state) { 890 case EZUSB_CTX_COMPLETE: 891 retval = ctx->outurb->status; 892 break; 893 894 case EZUSB_CTX_QUEUED: 895 case EZUSB_CTX_REQ_SUBMITTED: 896 if (!ctx->in_rid) 897 break; 898 fallthrough; 899 default: 900 err("%s: Unexpected context state %d", __func__, 901 state); 902 fallthrough; 903 case EZUSB_CTX_REQ_TIMEOUT: 904 case EZUSB_CTX_REQ_FAILED: 905 case EZUSB_CTX_RESP_TIMEOUT: 906 case EZUSB_CTX_REQSUBMIT_FAIL: 907 printk(KERN_ERR PFX "Access failed, resetting (state %d," 908 " reply_count %d)\n", state, upriv->reply_count); 909 upriv->reply_count = 0; 910 if (state == EZUSB_CTX_REQ_TIMEOUT 911 || state == EZUSB_CTX_RESP_TIMEOUT) { 912 printk(KERN_ERR PFX "ctx timed out\n"); 913 retval = -ETIMEDOUT; 914 } else { 915 printk(KERN_ERR PFX "ctx failed\n"); 916 retval = -EFAULT; 917 } 918 goto exit; 919 } 920 if (ctx->in_rid) { 921 struct ezusb_packet *ans = ctx->buf; 922 unsigned exp_len; 923 924 if (ans->hermes_len != 0) 925 exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12; 926 else 927 exp_len = 14; 928 929 if (exp_len != ctx->buf_length) { 930 err("%s: length mismatch for RID 0x%04x: " 931 "expected %d, got %d", __func__, 932 ctx->in_rid, exp_len, ctx->buf_length); 933 retval = -EIO; 934 goto exit; 935 } 936 937 if (ans_buff) 938 memcpy(ans_buff, ans->data, min(exp_len, ans_size)); 939 if (ans_length) 940 *ans_length = le16_to_cpu(ans->hermes_len); 941 } 942 exit: 943 ezusb_request_context_put(ctx); 944 return retval; 945 } 946 947 static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, 948 u16 length, const void *data) 949 { 950 struct ezusb_priv *upriv = hw->priv; 951 u16 frame_type; 952 struct request_context *ctx; 953 954 if (length == 0) 955 return -EINVAL; 956 957 length = HERMES_RECLEN_TO_BYTES(length); 958 959 /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be 960 * set to be empty, but the USB bridge doesn't like it */ 961 if (length == 0) 962 return 0; 963 964 ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK); 965 if (!ctx) 966 return -ENOMEM; 967 968 if (rid == EZUSB_RID_TX) 969 frame_type = EZUSB_FRAME_DATA; 970 else 971 frame_type = EZUSB_FRAME_CONTROL; 972 973 return ezusb_access_ltv(upriv, ctx, length, data, frame_type, 974 NULL, 0, NULL); 975 } 976 977 static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, 978 unsigned bufsize, u16 *length, void *buf) 979 { 980 struct ezusb_priv *upriv = hw->priv; 981 struct request_context *ctx; 982 983 if (bufsize % 2) 984 return -EINVAL; 985 986 ctx = ezusb_alloc_ctx(upriv, rid, rid); 987 if (!ctx) 988 return -ENOMEM; 989 990 return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, 991 buf, bufsize, length); 992 } 993 994 static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, 995 u16 parm2, struct hermes_response *resp) 996 { 997 struct ezusb_priv *upriv = hw->priv; 998 struct request_context *ctx; 999 1000 __le16 data[4] = { 1001 cpu_to_le16(cmd), 1002 cpu_to_le16(parm0), 1003 cpu_to_le16(parm1), 1004 cpu_to_le16(parm2), 1005 }; 1006 netdev_dbg(upriv->dev, 1007 "0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X\n", cmd, 1008 parm0, parm1, parm2); 1009 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1010 if (!ctx) 1011 return -ENOMEM; 1012 1013 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1014 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1015 } 1016 1017 static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, 1018 struct hermes_response *resp) 1019 { 1020 struct ezusb_priv *upriv = hw->priv; 1021 struct request_context *ctx; 1022 1023 __le16 data[4] = { 1024 cpu_to_le16(cmd), 1025 cpu_to_le16(parm0), 1026 0, 1027 0, 1028 }; 1029 netdev_dbg(upriv->dev, "0x%04X, parm0 0x%04X\n", cmd, parm0); 1030 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1031 if (!ctx) 1032 return -ENOMEM; 1033 1034 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1035 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1036 } 1037 1038 static int ezusb_bap_pread(struct hermes *hw, int bap, 1039 void *buf, int len, u16 id, u16 offset) 1040 { 1041 struct ezusb_priv *upriv = hw->priv; 1042 struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer; 1043 int actual_length = upriv->read_urb->actual_length; 1044 1045 if (id == EZUSB_RID_RX) { 1046 if ((sizeof(*ans) + offset + len) > actual_length) { 1047 printk(KERN_ERR PFX "BAP read beyond buffer end " 1048 "in rx frame\n"); 1049 return -EINVAL; 1050 } 1051 memcpy(buf, ans->data + offset, len); 1052 return 0; 1053 } 1054 1055 if (EZUSB_IS_INFO(id)) { 1056 /* Include 4 bytes for length/type */ 1057 if ((sizeof(*ans) + offset + len - 4) > actual_length) { 1058 printk(KERN_ERR PFX "BAP read beyond buffer end " 1059 "in info frame\n"); 1060 return -EFAULT; 1061 } 1062 memcpy(buf, ans->data + offset - 4, len); 1063 } else { 1064 printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id); 1065 return -EINVAL; 1066 } 1067 1068 return 0; 1069 } 1070 1071 static int ezusb_read_pda(struct hermes *hw, __le16 *pda, 1072 u32 pda_addr, u16 pda_len) 1073 { 1074 struct ezusb_priv *upriv = hw->priv; 1075 struct request_context *ctx; 1076 __le16 data[] = { 1077 cpu_to_le16(pda_addr & 0xffff), 1078 cpu_to_le16(pda_len - 4) 1079 }; 1080 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); 1081 if (!ctx) 1082 return -ENOMEM; 1083 1084 /* wl_lkm does not include PDA size in the PDA area. 1085 * We will pad the information into pda, so other routines 1086 * don't have to be modified */ 1087 pda[0] = cpu_to_le16(pda_len - 2); 1088 /* Includes CFG_PROD_DATA but not itself */ 1089 pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ 1090 1091 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1092 EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, 1093 NULL); 1094 } 1095 1096 static int ezusb_program_init(struct hermes *hw, u32 entry_point) 1097 { 1098 struct ezusb_priv *upriv = hw->priv; 1099 struct request_context *ctx; 1100 __le32 data = cpu_to_le32(entry_point); 1101 1102 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK); 1103 if (!ctx) 1104 return -ENOMEM; 1105 1106 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1107 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1108 } 1109 1110 static int ezusb_program_end(struct hermes *hw) 1111 { 1112 struct ezusb_priv *upriv = hw->priv; 1113 struct request_context *ctx; 1114 1115 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); 1116 if (!ctx) 1117 return -ENOMEM; 1118 1119 return ezusb_access_ltv(upriv, ctx, 0, NULL, 1120 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1121 } 1122 1123 static int ezusb_program_bytes(struct hermes *hw, const char *buf, 1124 u32 addr, u32 len) 1125 { 1126 struct ezusb_priv *upriv = hw->priv; 1127 struct request_context *ctx; 1128 __le32 data = cpu_to_le32(addr); 1129 int err; 1130 1131 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); 1132 if (!ctx) 1133 return -ENOMEM; 1134 1135 err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1136 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1137 if (err) 1138 return err; 1139 1140 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); 1141 if (!ctx) 1142 return -ENOMEM; 1143 1144 return ezusb_access_ltv(upriv, ctx, len, buf, 1145 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1146 } 1147 1148 static int ezusb_program(struct hermes *hw, const char *buf, 1149 u32 addr, u32 len) 1150 { 1151 u32 ch_addr; 1152 u32 ch_len; 1153 int err = 0; 1154 1155 /* We can only send 2048 bytes out of the bulk xmit at a time, 1156 * so we have to split any programming into chunks of <2048 1157 * bytes. */ 1158 1159 ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; 1160 ch_addr = addr; 1161 1162 while (ch_addr < (addr + len)) { 1163 pr_debug("Programming subblock of length %d " 1164 "to address 0x%08x. Data @ %p\n", 1165 ch_len, ch_addr, &buf[ch_addr - addr]); 1166 1167 err = ezusb_program_bytes(hw, &buf[ch_addr - addr], 1168 ch_addr, ch_len); 1169 if (err) 1170 break; 1171 1172 ch_addr += ch_len; 1173 ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? 1174 (addr + len - ch_addr) : MAX_DL_SIZE; 1175 } 1176 1177 return err; 1178 } 1179 1180 static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) 1181 { 1182 struct orinoco_private *priv = ndev_priv(dev); 1183 struct net_device_stats *stats = &dev->stats; 1184 struct ezusb_priv *upriv = priv->card; 1185 u8 mic[MICHAEL_MIC_LEN + 1]; 1186 int err = 0; 1187 int tx_control; 1188 unsigned long flags; 1189 struct request_context *ctx; 1190 u8 *buf; 1191 int tx_size; 1192 1193 if (!netif_running(dev)) { 1194 printk(KERN_ERR "%s: Tx on stopped device!\n", 1195 dev->name); 1196 return NETDEV_TX_BUSY; 1197 } 1198 1199 if (netif_queue_stopped(dev)) { 1200 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", 1201 dev->name); 1202 return NETDEV_TX_BUSY; 1203 } 1204 1205 if (orinoco_lock(priv, &flags) != 0) { 1206 printk(KERN_ERR 1207 "%s: ezusb_xmit() called while hw_unavailable\n", 1208 dev->name); 1209 return NETDEV_TX_BUSY; 1210 } 1211 1212 if (!netif_carrier_ok(dev) || 1213 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { 1214 /* Oops, the firmware hasn't established a connection, 1215 silently drop the packet (this seems to be the 1216 safest approach). */ 1217 goto drop; 1218 } 1219 1220 /* Check packet length */ 1221 if (skb->len < ETH_HLEN) 1222 goto drop; 1223 1224 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); 1225 if (!ctx) 1226 goto busy; 1227 1228 memset(ctx->buf, 0, BULK_BUF_SIZE); 1229 buf = ctx->buf->data; 1230 1231 tx_control = 0; 1232 1233 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, 1234 &mic[0]); 1235 if (err) 1236 goto drop; 1237 1238 { 1239 __le16 *tx_cntl = (__le16 *)buf; 1240 *tx_cntl = cpu_to_le16(tx_control); 1241 buf += sizeof(*tx_cntl); 1242 } 1243 1244 memcpy(buf, skb->data, skb->len); 1245 buf += skb->len; 1246 1247 if (tx_control & HERMES_TXCTRL_MIC) { 1248 u8 *m = mic; 1249 /* Mic has been offset so it can be copied to an even 1250 * address. We're copying eveything anyway, so we 1251 * don't need to copy that first byte. */ 1252 if (skb->len % 2) 1253 m++; 1254 memcpy(buf, m, MICHAEL_MIC_LEN); 1255 buf += MICHAEL_MIC_LEN; 1256 } 1257 1258 /* Finally, we actually initiate the send */ 1259 netif_stop_queue(dev); 1260 1261 /* The card may behave better if we send evenly sized usb transfers */ 1262 tx_size = ALIGN(buf - ctx->buf->data, 2); 1263 1264 err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, 1265 EZUSB_FRAME_DATA, NULL, 0, NULL); 1266 1267 if (err) { 1268 netif_start_queue(dev); 1269 if (net_ratelimit()) 1270 printk(KERN_ERR "%s: Error %d transmitting packet\n", 1271 dev->name, err); 1272 goto busy; 1273 } 1274 1275 netif_trans_update(dev); 1276 stats->tx_bytes += skb->len; 1277 goto ok; 1278 1279 drop: 1280 stats->tx_errors++; 1281 stats->tx_dropped++; 1282 1283 ok: 1284 orinoco_unlock(priv, &flags); 1285 dev_kfree_skb(skb); 1286 return NETDEV_TX_OK; 1287 1288 busy: 1289 orinoco_unlock(priv, &flags); 1290 return NETDEV_TX_BUSY; 1291 } 1292 1293 static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid) 1294 { 1295 *fid = EZUSB_RID_TX; 1296 return 0; 1297 } 1298 1299 1300 static int ezusb_hard_reset(struct orinoco_private *priv) 1301 { 1302 struct ezusb_priv *upriv = priv->card; 1303 int retval = ezusb_8051_cpucs(upriv, 1); 1304 1305 if (retval < 0) { 1306 err("Failed to reset"); 1307 return retval; 1308 } 1309 1310 retval = ezusb_8051_cpucs(upriv, 0); 1311 if (retval < 0) { 1312 err("Failed to unreset"); 1313 return retval; 1314 } 1315 1316 netdev_dbg(upriv->dev, "sending control message\n"); 1317 retval = usb_control_msg(upriv->udev, 1318 usb_sndctrlpipe(upriv->udev, 0), 1319 EZUSB_REQUEST_TRIGGER, 1320 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1321 USB_DIR_OUT, 0x0, 0x0, NULL, 0, 1322 DEF_TIMEOUT); 1323 if (retval < 0) { 1324 err("EZUSB_REQUEST_TRIGGER failed retval %d", retval); 1325 return retval; 1326 } 1327 #if 0 1328 dbg("Sending EZUSB_REQUEST_TRIG_AC"); 1329 retval = usb_control_msg(upriv->udev, 1330 usb_sndctrlpipe(upriv->udev, 0), 1331 EZUSB_REQUEST_TRIG_AC, 1332 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1333 USB_DIR_OUT, 0x00FA, 0x0, NULL, 0, 1334 DEF_TIMEOUT); 1335 if (retval < 0) { 1336 err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval); 1337 return retval; 1338 } 1339 #endif 1340 1341 return 0; 1342 } 1343 1344 1345 static int ezusb_init(struct hermes *hw) 1346 { 1347 struct ezusb_priv *upriv = hw->priv; 1348 int retval; 1349 1350 if (!upriv) 1351 return -EINVAL; 1352 1353 upriv->reply_count = 0; 1354 /* Write the MAGIC number on the simulated registers to keep 1355 * orinoco.c happy */ 1356 hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); 1357 hermes_write_regn(hw, RXFID, EZUSB_RID_RX); 1358 1359 usb_kill_urb(upriv->read_urb); 1360 ezusb_submit_in_urb(upriv); 1361 1362 retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1, 1363 HERMES_BYTES_TO_RECLEN(2), "\x10\x00"); 1364 if (retval < 0) { 1365 printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval); 1366 return retval; 1367 } 1368 1369 retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL); 1370 if (retval < 0) { 1371 printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval); 1372 return retval; 1373 } 1374 1375 return 0; 1376 } 1377 1378 static void ezusb_bulk_in_callback(struct urb *urb) 1379 { 1380 struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context; 1381 struct ezusb_packet *ans = urb->transfer_buffer; 1382 u16 crc; 1383 u16 hermes_rid; 1384 1385 if (upriv->udev == NULL) 1386 return; 1387 1388 if (urb->status == -ETIMEDOUT) { 1389 /* When a device gets unplugged we get this every time 1390 * we resubmit, flooding the logs. Since we don't use 1391 * USB timeouts, it shouldn't happen any other time*/ 1392 pr_warn("%s: urb timed out, not resubmitting\n", __func__); 1393 return; 1394 } 1395 if (urb->status == -ECONNABORTED) { 1396 pr_warn("%s: connection abort, resubmitting urb\n", 1397 __func__); 1398 goto resubmit; 1399 } 1400 if ((urb->status == -EILSEQ) 1401 || (urb->status == -ENOENT) 1402 || (urb->status == -ECONNRESET)) { 1403 netdev_dbg(upriv->dev, "status %d, not resubmiting\n", 1404 urb->status); 1405 return; 1406 } 1407 if (urb->status) 1408 netdev_dbg(upriv->dev, "status: %d length: %d\n", 1409 urb->status, urb->actual_length); 1410 if (urb->actual_length < sizeof(*ans)) { 1411 err("%s: short read, ignoring", __func__); 1412 goto resubmit; 1413 } 1414 crc = build_crc(ans); 1415 if (le16_to_cpu(ans->crc) != crc) { 1416 err("CRC error, ignoring packet"); 1417 goto resubmit; 1418 } 1419 1420 hermes_rid = le16_to_cpu(ans->hermes_rid); 1421 if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) { 1422 ezusb_request_in_callback(upriv, urb); 1423 } else if (upriv->dev) { 1424 struct net_device *dev = upriv->dev; 1425 struct orinoco_private *priv = ndev_priv(dev); 1426 struct hermes *hw = &priv->hw; 1427 1428 if (hermes_rid == EZUSB_RID_RX) { 1429 __orinoco_ev_rx(dev, hw); 1430 } else { 1431 hermes_write_regn(hw, INFOFID, 1432 le16_to_cpu(ans->hermes_rid)); 1433 __orinoco_ev_info(dev, hw); 1434 } 1435 } 1436 1437 resubmit: 1438 if (upriv->udev) 1439 ezusb_submit_in_urb(upriv); 1440 } 1441 1442 static inline void ezusb_delete(struct ezusb_priv *upriv) 1443 { 1444 struct list_head *item; 1445 struct list_head *tmp_item; 1446 unsigned long flags; 1447 1448 BUG_ON(!upriv); 1449 1450 mutex_lock(&upriv->mtx); 1451 1452 upriv->udev = NULL; /* No timer will be rearmed from here */ 1453 1454 usb_kill_urb(upriv->read_urb); 1455 1456 spin_lock_irqsave(&upriv->req_lock, flags); 1457 list_for_each_safe(item, tmp_item, &upriv->req_active) { 1458 struct request_context *ctx; 1459 int err; 1460 1461 ctx = list_entry(item, struct request_context, list); 1462 refcount_inc(&ctx->refcount); 1463 1464 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 1465 err = usb_unlink_urb(ctx->outurb); 1466 1467 spin_unlock_irqrestore(&upriv->req_lock, flags); 1468 if (err == -EINPROGRESS) 1469 wait_for_completion(&ctx->done); 1470 1471 del_timer_sync(&ctx->timer); 1472 /* FIXME: there is an slight chance for the irq handler to 1473 * be running */ 1474 if (!list_empty(&ctx->list)) 1475 ezusb_ctx_complete(ctx); 1476 1477 ezusb_request_context_put(ctx); 1478 spin_lock_irqsave(&upriv->req_lock, flags); 1479 } 1480 spin_unlock_irqrestore(&upriv->req_lock, flags); 1481 1482 list_for_each_safe(item, tmp_item, &upriv->req_pending) 1483 ezusb_ctx_complete(list_entry(item, 1484 struct request_context, list)); 1485 1486 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS) 1487 printk(KERN_ERR PFX "Some URB in progress\n"); 1488 1489 mutex_unlock(&upriv->mtx); 1490 1491 if (upriv->read_urb) { 1492 kfree(upriv->read_urb->transfer_buffer); 1493 usb_free_urb(upriv->read_urb); 1494 } 1495 kfree(upriv->bap_buf); 1496 if (upriv->dev) { 1497 struct orinoco_private *priv = ndev_priv(upriv->dev); 1498 orinoco_if_del(priv); 1499 wiphy_unregister(priv_to_wiphy(upriv)); 1500 free_orinocodev(priv); 1501 } 1502 } 1503 1504 static void ezusb_lock_irqsave(spinlock_t *lock, 1505 unsigned long *flags) __acquires(lock) 1506 { 1507 spin_lock_bh(lock); 1508 } 1509 1510 static void ezusb_unlock_irqrestore(spinlock_t *lock, 1511 unsigned long *flags) __releases(lock) 1512 { 1513 spin_unlock_bh(lock); 1514 } 1515 1516 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) 1517 { 1518 spin_lock_bh(lock); 1519 } 1520 1521 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) 1522 { 1523 spin_unlock_bh(lock); 1524 } 1525 1526 static const struct hermes_ops ezusb_ops = { 1527 .init = ezusb_init, 1528 .cmd_wait = ezusb_docmd_wait, 1529 .init_cmd_wait = ezusb_doicmd_wait, 1530 .allocate = ezusb_allocate, 1531 .read_ltv = ezusb_read_ltv, 1532 .write_ltv = ezusb_write_ltv, 1533 .bap_pread = ezusb_bap_pread, 1534 .read_pda = ezusb_read_pda, 1535 .program_init = ezusb_program_init, 1536 .program_end = ezusb_program_end, 1537 .program = ezusb_program, 1538 .lock_irqsave = ezusb_lock_irqsave, 1539 .unlock_irqrestore = ezusb_unlock_irqrestore, 1540 .lock_irq = ezusb_lock_irq, 1541 .unlock_irq = ezusb_unlock_irq, 1542 }; 1543 1544 static const struct net_device_ops ezusb_netdev_ops = { 1545 .ndo_open = orinoco_open, 1546 .ndo_stop = orinoco_stop, 1547 .ndo_start_xmit = ezusb_xmit, 1548 .ndo_set_rx_mode = orinoco_set_multicast_list, 1549 .ndo_change_mtu = orinoco_change_mtu, 1550 .ndo_set_mac_address = eth_mac_addr, 1551 .ndo_validate_addr = eth_validate_addr, 1552 .ndo_tx_timeout = orinoco_tx_timeout, 1553 }; 1554 1555 static int ezusb_probe(struct usb_interface *interface, 1556 const struct usb_device_id *id) 1557 { 1558 struct usb_device *udev = interface_to_usbdev(interface); 1559 struct orinoco_private *priv; 1560 struct hermes *hw; 1561 struct ezusb_priv *upriv = NULL; 1562 struct usb_interface_descriptor *iface_desc; 1563 struct usb_endpoint_descriptor *ep; 1564 const struct firmware *fw_entry = NULL; 1565 int retval = 0; 1566 int i; 1567 1568 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, 1569 ezusb_hard_reset, NULL); 1570 if (!priv) { 1571 err("Couldn't allocate orinocodev"); 1572 retval = -ENOMEM; 1573 goto exit; 1574 } 1575 1576 hw = &priv->hw; 1577 1578 upriv = priv->card; 1579 1580 mutex_init(&upriv->mtx); 1581 spin_lock_init(&upriv->reply_count_lock); 1582 1583 spin_lock_init(&upriv->req_lock); 1584 INIT_LIST_HEAD(&upriv->req_pending); 1585 INIT_LIST_HEAD(&upriv->req_active); 1586 1587 upriv->udev = udev; 1588 1589 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; 1590 hw->reg_spacing = HERMES_16BIT_REGSPACING; 1591 hw->priv = upriv; 1592 hw->ops = &ezusb_ops; 1593 1594 /* set up the endpoint information */ 1595 /* check out the endpoints */ 1596 1597 iface_desc = &interface->cur_altsetting->desc; 1598 for (i = 0; i < iface_desc->bNumEndpoints; ++i) { 1599 ep = &interface->cur_altsetting->endpoint[i].desc; 1600 1601 if (usb_endpoint_is_bulk_in(ep)) { 1602 /* we found a bulk in endpoint */ 1603 if (upriv->read_urb != NULL) { 1604 pr_warn("Found a second bulk in ep, ignored\n"); 1605 continue; 1606 } 1607 1608 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1609 if (!upriv->read_urb) 1610 goto error; 1611 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1612 pr_warn("bulk in: wMaxPacketSize!= 64\n"); 1613 if (ep->bEndpointAddress != (2 | USB_DIR_IN)) 1614 pr_warn("bulk in: bEndpointAddress: %d\n", 1615 ep->bEndpointAddress); 1616 upriv->read_pipe = usb_rcvbulkpipe(udev, 1617 ep-> 1618 bEndpointAddress); 1619 upriv->read_urb->transfer_buffer = 1620 kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1621 if (!upriv->read_urb->transfer_buffer) { 1622 err("Couldn't allocate IN buffer"); 1623 goto error; 1624 } 1625 } 1626 1627 if (usb_endpoint_is_bulk_out(ep)) { 1628 /* we found a bulk out endpoint */ 1629 if (upriv->bap_buf != NULL) { 1630 pr_warn("Found a second bulk out ep, ignored\n"); 1631 continue; 1632 } 1633 1634 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1635 pr_warn("bulk out: wMaxPacketSize != 64\n"); 1636 if (ep->bEndpointAddress != 2) 1637 pr_warn("bulk out: bEndpointAddress: %d\n", 1638 ep->bEndpointAddress); 1639 upriv->write_pipe = usb_sndbulkpipe(udev, 1640 ep-> 1641 bEndpointAddress); 1642 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1643 if (!upriv->bap_buf) { 1644 err("Couldn't allocate bulk_out_buffer"); 1645 goto error; 1646 } 1647 } 1648 } 1649 if (!upriv->bap_buf || !upriv->read_urb) { 1650 err("Didn't find the required bulk endpoints"); 1651 goto error; 1652 } 1653 1654 if (request_firmware(&fw_entry, "orinoco_ezusb_fw", 1655 &interface->dev) == 0) { 1656 firmware.size = fw_entry->size; 1657 firmware.code = fw_entry->data; 1658 } 1659 if (firmware.size && firmware.code) { 1660 if (ezusb_firmware_download(upriv, &firmware) < 0) 1661 goto error; 1662 } else { 1663 err("No firmware to download"); 1664 goto error; 1665 } 1666 1667 if (ezusb_hard_reset(priv) < 0) { 1668 err("Cannot reset the device"); 1669 goto error; 1670 } 1671 1672 /* If the firmware is already downloaded orinoco.c will call 1673 * ezusb_init but if the firmware is not already there, that will make 1674 * the kernel very unstable, so we try initializing here and quit in 1675 * case of error */ 1676 if (ezusb_init(hw) < 0) { 1677 err("Couldn't initialize the device"); 1678 err("Firmware may not be downloaded or may be wrong."); 1679 goto error; 1680 } 1681 1682 /* Initialise the main driver */ 1683 if (orinoco_init(priv) != 0) { 1684 err("orinoco_init() failed\n"); 1685 goto error; 1686 } 1687 1688 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { 1689 upriv->dev = NULL; 1690 err("%s: orinoco_if_add() failed", __func__); 1691 wiphy_unregister(priv_to_wiphy(priv)); 1692 goto error; 1693 } 1694 upriv->dev = priv->ndev; 1695 1696 goto exit; 1697 1698 error: 1699 ezusb_delete(upriv); 1700 if (upriv->dev) { 1701 /* upriv->dev was 0, so ezusb_delete() didn't free it */ 1702 free_orinocodev(priv); 1703 } 1704 upriv = NULL; 1705 retval = -EFAULT; 1706 exit: 1707 if (fw_entry) { 1708 firmware.code = NULL; 1709 firmware.size = 0; 1710 release_firmware(fw_entry); 1711 } 1712 usb_set_intfdata(interface, upriv); 1713 return retval; 1714 } 1715 1716 1717 static void ezusb_disconnect(struct usb_interface *intf) 1718 { 1719 struct ezusb_priv *upriv = usb_get_intfdata(intf); 1720 usb_set_intfdata(intf, NULL); 1721 ezusb_delete(upriv); 1722 printk(KERN_INFO PFX "Disconnected\n"); 1723 } 1724 1725 1726 /* usb specific object needed to register this driver with the usb subsystem */ 1727 static struct usb_driver orinoco_driver = { 1728 .name = DRIVER_NAME, 1729 .probe = ezusb_probe, 1730 .disconnect = ezusb_disconnect, 1731 .id_table = ezusb_table, 1732 .disable_hub_initiated_lpm = 1, 1733 }; 1734 1735 module_usb_driver(orinoco_driver); 1736 1737 MODULE_AUTHOR("Manuel Estrada Sainz"); 1738 MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); 1739 MODULE_LICENSE("Dual MPL/GPL"); 1740