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_TRIGER 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 /* fall through */ 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 /* fall through */ 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 BUG_ON(in_irq()); 863 864 if (!upriv->udev) { 865 retval = -ENODEV; 866 goto exit; 867 } 868 869 if (upriv->read_urb->status != -EINPROGRESS) 870 err("%s: in urb not pending", __func__); 871 872 /* protect upriv->reply_count, guarantee sequential numbers */ 873 spin_lock_bh(&upriv->reply_count_lock); 874 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, 875 frame_type, upriv->reply_count); 876 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, 877 ctx->buf, req_size, 878 ezusb_request_out_callback, ctx); 879 880 if (ctx->in_rid) 881 upriv->reply_count = ezusb_reply_inc(upriv->reply_count); 882 883 ezusb_req_enqueue_run(upriv, ctx); 884 885 spin_unlock_bh(&upriv->reply_count_lock); 886 887 if (ctx->in_rid) 888 ezusb_req_ctx_wait(upriv, ctx); 889 890 state = ctx->state; 891 switch (state) { 892 case EZUSB_CTX_COMPLETE: 893 retval = ctx->outurb->status; 894 break; 895 896 case EZUSB_CTX_QUEUED: 897 case EZUSB_CTX_REQ_SUBMITTED: 898 if (!ctx->in_rid) 899 break; 900 /* fall through */ 901 default: 902 err("%s: Unexpected context state %d", __func__, 903 state); 904 /* fall through */ 905 case EZUSB_CTX_REQ_TIMEOUT: 906 case EZUSB_CTX_REQ_FAILED: 907 case EZUSB_CTX_RESP_TIMEOUT: 908 case EZUSB_CTX_REQSUBMIT_FAIL: 909 printk(KERN_ERR PFX "Access failed, resetting (state %d," 910 " reply_count %d)\n", state, upriv->reply_count); 911 upriv->reply_count = 0; 912 if (state == EZUSB_CTX_REQ_TIMEOUT 913 || state == EZUSB_CTX_RESP_TIMEOUT) { 914 printk(KERN_ERR PFX "ctx timed out\n"); 915 retval = -ETIMEDOUT; 916 } else { 917 printk(KERN_ERR PFX "ctx failed\n"); 918 retval = -EFAULT; 919 } 920 goto exit; 921 } 922 if (ctx->in_rid) { 923 struct ezusb_packet *ans = ctx->buf; 924 unsigned exp_len; 925 926 if (ans->hermes_len != 0) 927 exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12; 928 else 929 exp_len = 14; 930 931 if (exp_len != ctx->buf_length) { 932 err("%s: length mismatch for RID 0x%04x: " 933 "expected %d, got %d", __func__, 934 ctx->in_rid, exp_len, ctx->buf_length); 935 retval = -EIO; 936 goto exit; 937 } 938 939 if (ans_buff) 940 memcpy(ans_buff, ans->data, min(exp_len, ans_size)); 941 if (ans_length) 942 *ans_length = le16_to_cpu(ans->hermes_len); 943 } 944 exit: 945 ezusb_request_context_put(ctx); 946 return retval; 947 } 948 949 static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, 950 u16 length, const void *data) 951 { 952 struct ezusb_priv *upriv = hw->priv; 953 u16 frame_type; 954 struct request_context *ctx; 955 956 if (length == 0) 957 return -EINVAL; 958 959 length = HERMES_RECLEN_TO_BYTES(length); 960 961 /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be 962 * set to be empty, but the USB bridge doesn't like it */ 963 if (length == 0) 964 return 0; 965 966 ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK); 967 if (!ctx) 968 return -ENOMEM; 969 970 if (rid == EZUSB_RID_TX) 971 frame_type = EZUSB_FRAME_DATA; 972 else 973 frame_type = EZUSB_FRAME_CONTROL; 974 975 return ezusb_access_ltv(upriv, ctx, length, data, frame_type, 976 NULL, 0, NULL); 977 } 978 979 static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, 980 unsigned bufsize, u16 *length, void *buf) 981 { 982 struct ezusb_priv *upriv = hw->priv; 983 struct request_context *ctx; 984 985 if (bufsize % 2) 986 return -EINVAL; 987 988 ctx = ezusb_alloc_ctx(upriv, rid, rid); 989 if (!ctx) 990 return -ENOMEM; 991 992 return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, 993 buf, bufsize, length); 994 } 995 996 static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, 997 u16 parm2, struct hermes_response *resp) 998 { 999 struct ezusb_priv *upriv = hw->priv; 1000 struct request_context *ctx; 1001 1002 __le16 data[4] = { 1003 cpu_to_le16(cmd), 1004 cpu_to_le16(parm0), 1005 cpu_to_le16(parm1), 1006 cpu_to_le16(parm2), 1007 }; 1008 netdev_dbg(upriv->dev, 1009 "0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X\n", cmd, 1010 parm0, parm1, parm2); 1011 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1012 if (!ctx) 1013 return -ENOMEM; 1014 1015 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1016 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1017 } 1018 1019 static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, 1020 struct hermes_response *resp) 1021 { 1022 struct ezusb_priv *upriv = hw->priv; 1023 struct request_context *ctx; 1024 1025 __le16 data[4] = { 1026 cpu_to_le16(cmd), 1027 cpu_to_le16(parm0), 1028 0, 1029 0, 1030 }; 1031 netdev_dbg(upriv->dev, "0x%04X, parm0 0x%04X\n", cmd, parm0); 1032 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1033 if (!ctx) 1034 return -ENOMEM; 1035 1036 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1037 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1038 } 1039 1040 static int ezusb_bap_pread(struct hermes *hw, int bap, 1041 void *buf, int len, u16 id, u16 offset) 1042 { 1043 struct ezusb_priv *upriv = hw->priv; 1044 struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer; 1045 int actual_length = upriv->read_urb->actual_length; 1046 1047 if (id == EZUSB_RID_RX) { 1048 if ((sizeof(*ans) + offset + len) > actual_length) { 1049 printk(KERN_ERR PFX "BAP read beyond buffer end " 1050 "in rx frame\n"); 1051 return -EINVAL; 1052 } 1053 memcpy(buf, ans->data + offset, len); 1054 return 0; 1055 } 1056 1057 if (EZUSB_IS_INFO(id)) { 1058 /* Include 4 bytes for length/type */ 1059 if ((sizeof(*ans) + offset + len - 4) > actual_length) { 1060 printk(KERN_ERR PFX "BAP read beyond buffer end " 1061 "in info frame\n"); 1062 return -EFAULT; 1063 } 1064 memcpy(buf, ans->data + offset - 4, len); 1065 } else { 1066 printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id); 1067 return -EINVAL; 1068 } 1069 1070 return 0; 1071 } 1072 1073 static int ezusb_read_pda(struct hermes *hw, __le16 *pda, 1074 u32 pda_addr, u16 pda_len) 1075 { 1076 struct ezusb_priv *upriv = hw->priv; 1077 struct request_context *ctx; 1078 __le16 data[] = { 1079 cpu_to_le16(pda_addr & 0xffff), 1080 cpu_to_le16(pda_len - 4) 1081 }; 1082 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); 1083 if (!ctx) 1084 return -ENOMEM; 1085 1086 /* wl_lkm does not include PDA size in the PDA area. 1087 * We will pad the information into pda, so other routines 1088 * don't have to be modified */ 1089 pda[0] = cpu_to_le16(pda_len - 2); 1090 /* Includes CFG_PROD_DATA but not itself */ 1091 pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ 1092 1093 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1094 EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, 1095 NULL); 1096 } 1097 1098 static int ezusb_program_init(struct hermes *hw, u32 entry_point) 1099 { 1100 struct ezusb_priv *upriv = hw->priv; 1101 struct request_context *ctx; 1102 __le32 data = cpu_to_le32(entry_point); 1103 1104 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK); 1105 if (!ctx) 1106 return -ENOMEM; 1107 1108 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1109 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1110 } 1111 1112 static int ezusb_program_end(struct hermes *hw) 1113 { 1114 struct ezusb_priv *upriv = hw->priv; 1115 struct request_context *ctx; 1116 1117 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); 1118 if (!ctx) 1119 return -ENOMEM; 1120 1121 return ezusb_access_ltv(upriv, ctx, 0, NULL, 1122 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1123 } 1124 1125 static int ezusb_program_bytes(struct hermes *hw, const char *buf, 1126 u32 addr, u32 len) 1127 { 1128 struct ezusb_priv *upriv = hw->priv; 1129 struct request_context *ctx; 1130 __le32 data = cpu_to_le32(addr); 1131 int err; 1132 1133 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); 1134 if (!ctx) 1135 return -ENOMEM; 1136 1137 err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1138 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1139 if (err) 1140 return err; 1141 1142 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); 1143 if (!ctx) 1144 return -ENOMEM; 1145 1146 return ezusb_access_ltv(upriv, ctx, len, buf, 1147 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1148 } 1149 1150 static int ezusb_program(struct hermes *hw, const char *buf, 1151 u32 addr, u32 len) 1152 { 1153 u32 ch_addr; 1154 u32 ch_len; 1155 int err = 0; 1156 1157 /* We can only send 2048 bytes out of the bulk xmit at a time, 1158 * so we have to split any programming into chunks of <2048 1159 * bytes. */ 1160 1161 ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; 1162 ch_addr = addr; 1163 1164 while (ch_addr < (addr + len)) { 1165 pr_debug("Programming subblock of length %d " 1166 "to address 0x%08x. Data @ %p\n", 1167 ch_len, ch_addr, &buf[ch_addr - addr]); 1168 1169 err = ezusb_program_bytes(hw, &buf[ch_addr - addr], 1170 ch_addr, ch_len); 1171 if (err) 1172 break; 1173 1174 ch_addr += ch_len; 1175 ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? 1176 (addr + len - ch_addr) : MAX_DL_SIZE; 1177 } 1178 1179 return err; 1180 } 1181 1182 static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) 1183 { 1184 struct orinoco_private *priv = ndev_priv(dev); 1185 struct net_device_stats *stats = &dev->stats; 1186 struct ezusb_priv *upriv = priv->card; 1187 u8 mic[MICHAEL_MIC_LEN + 1]; 1188 int err = 0; 1189 int tx_control; 1190 unsigned long flags; 1191 struct request_context *ctx; 1192 u8 *buf; 1193 int tx_size; 1194 1195 if (!netif_running(dev)) { 1196 printk(KERN_ERR "%s: Tx on stopped device!\n", 1197 dev->name); 1198 return NETDEV_TX_BUSY; 1199 } 1200 1201 if (netif_queue_stopped(dev)) { 1202 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", 1203 dev->name); 1204 return NETDEV_TX_BUSY; 1205 } 1206 1207 if (orinoco_lock(priv, &flags) != 0) { 1208 printk(KERN_ERR 1209 "%s: ezusb_xmit() called while hw_unavailable\n", 1210 dev->name); 1211 return NETDEV_TX_BUSY; 1212 } 1213 1214 if (!netif_carrier_ok(dev) || 1215 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { 1216 /* Oops, the firmware hasn't established a connection, 1217 silently drop the packet (this seems to be the 1218 safest approach). */ 1219 goto drop; 1220 } 1221 1222 /* Check packet length */ 1223 if (skb->len < ETH_HLEN) 1224 goto drop; 1225 1226 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); 1227 if (!ctx) 1228 goto busy; 1229 1230 memset(ctx->buf, 0, BULK_BUF_SIZE); 1231 buf = ctx->buf->data; 1232 1233 tx_control = 0; 1234 1235 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, 1236 &mic[0]); 1237 if (err) 1238 goto drop; 1239 1240 { 1241 __le16 *tx_cntl = (__le16 *)buf; 1242 *tx_cntl = cpu_to_le16(tx_control); 1243 buf += sizeof(*tx_cntl); 1244 } 1245 1246 memcpy(buf, skb->data, skb->len); 1247 buf += skb->len; 1248 1249 if (tx_control & HERMES_TXCTRL_MIC) { 1250 u8 *m = mic; 1251 /* Mic has been offset so it can be copied to an even 1252 * address. We're copying eveything anyway, so we 1253 * don't need to copy that first byte. */ 1254 if (skb->len % 2) 1255 m++; 1256 memcpy(buf, m, MICHAEL_MIC_LEN); 1257 buf += MICHAEL_MIC_LEN; 1258 } 1259 1260 /* Finally, we actually initiate the send */ 1261 netif_stop_queue(dev); 1262 1263 /* The card may behave better if we send evenly sized usb transfers */ 1264 tx_size = ALIGN(buf - ctx->buf->data, 2); 1265 1266 err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, 1267 EZUSB_FRAME_DATA, NULL, 0, NULL); 1268 1269 if (err) { 1270 netif_start_queue(dev); 1271 if (net_ratelimit()) 1272 printk(KERN_ERR "%s: Error %d transmitting packet\n", 1273 dev->name, err); 1274 goto busy; 1275 } 1276 1277 netif_trans_update(dev); 1278 stats->tx_bytes += skb->len; 1279 goto ok; 1280 1281 drop: 1282 stats->tx_errors++; 1283 stats->tx_dropped++; 1284 1285 ok: 1286 orinoco_unlock(priv, &flags); 1287 dev_kfree_skb(skb); 1288 return NETDEV_TX_OK; 1289 1290 busy: 1291 orinoco_unlock(priv, &flags); 1292 return NETDEV_TX_BUSY; 1293 } 1294 1295 static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid) 1296 { 1297 *fid = EZUSB_RID_TX; 1298 return 0; 1299 } 1300 1301 1302 static int ezusb_hard_reset(struct orinoco_private *priv) 1303 { 1304 struct ezusb_priv *upriv = priv->card; 1305 int retval = ezusb_8051_cpucs(upriv, 1); 1306 1307 if (retval < 0) { 1308 err("Failed to reset"); 1309 return retval; 1310 } 1311 1312 retval = ezusb_8051_cpucs(upriv, 0); 1313 if (retval < 0) { 1314 err("Failed to unreset"); 1315 return retval; 1316 } 1317 1318 netdev_dbg(upriv->dev, "sending control message\n"); 1319 retval = usb_control_msg(upriv->udev, 1320 usb_sndctrlpipe(upriv->udev, 0), 1321 EZUSB_REQUEST_TRIGER, 1322 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1323 USB_DIR_OUT, 0x0, 0x0, NULL, 0, 1324 DEF_TIMEOUT); 1325 if (retval < 0) { 1326 err("EZUSB_REQUEST_TRIGER failed retval %d", retval); 1327 return retval; 1328 } 1329 #if 0 1330 dbg("Sending EZUSB_REQUEST_TRIG_AC"); 1331 retval = usb_control_msg(upriv->udev, 1332 usb_sndctrlpipe(upriv->udev, 0), 1333 EZUSB_REQUEST_TRIG_AC, 1334 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1335 USB_DIR_OUT, 0x00FA, 0x0, NULL, 0, 1336 DEF_TIMEOUT); 1337 if (retval < 0) { 1338 err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval); 1339 return retval; 1340 } 1341 #endif 1342 1343 return 0; 1344 } 1345 1346 1347 static int ezusb_init(struct hermes *hw) 1348 { 1349 struct ezusb_priv *upriv = hw->priv; 1350 int retval; 1351 1352 BUG_ON(in_interrupt()); 1353 if (!upriv) 1354 return -EINVAL; 1355 1356 upriv->reply_count = 0; 1357 /* Write the MAGIC number on the simulated registers to keep 1358 * orinoco.c happy */ 1359 hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); 1360 hermes_write_regn(hw, RXFID, EZUSB_RID_RX); 1361 1362 usb_kill_urb(upriv->read_urb); 1363 ezusb_submit_in_urb(upriv); 1364 1365 retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1, 1366 HERMES_BYTES_TO_RECLEN(2), "\x10\x00"); 1367 if (retval < 0) { 1368 printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval); 1369 return retval; 1370 } 1371 1372 retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL); 1373 if (retval < 0) { 1374 printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval); 1375 return retval; 1376 } 1377 1378 return 0; 1379 } 1380 1381 static void ezusb_bulk_in_callback(struct urb *urb) 1382 { 1383 struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context; 1384 struct ezusb_packet *ans = urb->transfer_buffer; 1385 u16 crc; 1386 u16 hermes_rid; 1387 1388 if (upriv->udev == NULL) 1389 return; 1390 1391 if (urb->status == -ETIMEDOUT) { 1392 /* When a device gets unplugged we get this every time 1393 * we resubmit, flooding the logs. Since we don't use 1394 * USB timeouts, it shouldn't happen any other time*/ 1395 pr_warn("%s: urb timed out, not resubmitting\n", __func__); 1396 return; 1397 } 1398 if (urb->status == -ECONNABORTED) { 1399 pr_warn("%s: connection abort, resubmitting urb\n", 1400 __func__); 1401 goto resubmit; 1402 } 1403 if ((urb->status == -EILSEQ) 1404 || (urb->status == -ENOENT) 1405 || (urb->status == -ECONNRESET)) { 1406 netdev_dbg(upriv->dev, "status %d, not resubmiting\n", 1407 urb->status); 1408 return; 1409 } 1410 if (urb->status) 1411 netdev_dbg(upriv->dev, "status: %d length: %d\n", 1412 urb->status, urb->actual_length); 1413 if (urb->actual_length < sizeof(*ans)) { 1414 err("%s: short read, ignoring", __func__); 1415 goto resubmit; 1416 } 1417 crc = build_crc(ans); 1418 if (le16_to_cpu(ans->crc) != crc) { 1419 err("CRC error, ignoring packet"); 1420 goto resubmit; 1421 } 1422 1423 hermes_rid = le16_to_cpu(ans->hermes_rid); 1424 if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) { 1425 ezusb_request_in_callback(upriv, urb); 1426 } else if (upriv->dev) { 1427 struct net_device *dev = upriv->dev; 1428 struct orinoco_private *priv = ndev_priv(dev); 1429 struct hermes *hw = &priv->hw; 1430 1431 if (hermes_rid == EZUSB_RID_RX) { 1432 __orinoco_ev_rx(dev, hw); 1433 } else { 1434 hermes_write_regn(hw, INFOFID, 1435 le16_to_cpu(ans->hermes_rid)); 1436 __orinoco_ev_info(dev, hw); 1437 } 1438 } 1439 1440 resubmit: 1441 if (upriv->udev) 1442 ezusb_submit_in_urb(upriv); 1443 } 1444 1445 static inline void ezusb_delete(struct ezusb_priv *upriv) 1446 { 1447 struct list_head *item; 1448 struct list_head *tmp_item; 1449 unsigned long flags; 1450 1451 BUG_ON(in_interrupt()); 1452 BUG_ON(!upriv); 1453 1454 mutex_lock(&upriv->mtx); 1455 1456 upriv->udev = NULL; /* No timer will be rearmed from here */ 1457 1458 usb_kill_urb(upriv->read_urb); 1459 1460 spin_lock_irqsave(&upriv->req_lock, flags); 1461 list_for_each_safe(item, tmp_item, &upriv->req_active) { 1462 struct request_context *ctx; 1463 int err; 1464 1465 ctx = list_entry(item, struct request_context, list); 1466 refcount_inc(&ctx->refcount); 1467 1468 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 1469 err = usb_unlink_urb(ctx->outurb); 1470 1471 spin_unlock_irqrestore(&upriv->req_lock, flags); 1472 if (err == -EINPROGRESS) 1473 wait_for_completion(&ctx->done); 1474 1475 del_timer_sync(&ctx->timer); 1476 /* FIXME: there is an slight chance for the irq handler to 1477 * be running */ 1478 if (!list_empty(&ctx->list)) 1479 ezusb_ctx_complete(ctx); 1480 1481 ezusb_request_context_put(ctx); 1482 spin_lock_irqsave(&upriv->req_lock, flags); 1483 } 1484 spin_unlock_irqrestore(&upriv->req_lock, flags); 1485 1486 list_for_each_safe(item, tmp_item, &upriv->req_pending) 1487 ezusb_ctx_complete(list_entry(item, 1488 struct request_context, list)); 1489 1490 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS) 1491 printk(KERN_ERR PFX "Some URB in progress\n"); 1492 1493 mutex_unlock(&upriv->mtx); 1494 1495 if (upriv->read_urb) { 1496 kfree(upriv->read_urb->transfer_buffer); 1497 usb_free_urb(upriv->read_urb); 1498 } 1499 kfree(upriv->bap_buf); 1500 if (upriv->dev) { 1501 struct orinoco_private *priv = ndev_priv(upriv->dev); 1502 orinoco_if_del(priv); 1503 wiphy_unregister(priv_to_wiphy(upriv)); 1504 free_orinocodev(priv); 1505 } 1506 } 1507 1508 static void ezusb_lock_irqsave(spinlock_t *lock, 1509 unsigned long *flags) __acquires(lock) 1510 { 1511 spin_lock_bh(lock); 1512 } 1513 1514 static void ezusb_unlock_irqrestore(spinlock_t *lock, 1515 unsigned long *flags) __releases(lock) 1516 { 1517 spin_unlock_bh(lock); 1518 } 1519 1520 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) 1521 { 1522 spin_lock_bh(lock); 1523 } 1524 1525 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) 1526 { 1527 spin_unlock_bh(lock); 1528 } 1529 1530 static const struct hermes_ops ezusb_ops = { 1531 .init = ezusb_init, 1532 .cmd_wait = ezusb_docmd_wait, 1533 .init_cmd_wait = ezusb_doicmd_wait, 1534 .allocate = ezusb_allocate, 1535 .read_ltv = ezusb_read_ltv, 1536 .write_ltv = ezusb_write_ltv, 1537 .bap_pread = ezusb_bap_pread, 1538 .read_pda = ezusb_read_pda, 1539 .program_init = ezusb_program_init, 1540 .program_end = ezusb_program_end, 1541 .program = ezusb_program, 1542 .lock_irqsave = ezusb_lock_irqsave, 1543 .unlock_irqrestore = ezusb_unlock_irqrestore, 1544 .lock_irq = ezusb_lock_irq, 1545 .unlock_irq = ezusb_unlock_irq, 1546 }; 1547 1548 static const struct net_device_ops ezusb_netdev_ops = { 1549 .ndo_open = orinoco_open, 1550 .ndo_stop = orinoco_stop, 1551 .ndo_start_xmit = ezusb_xmit, 1552 .ndo_set_rx_mode = orinoco_set_multicast_list, 1553 .ndo_change_mtu = orinoco_change_mtu, 1554 .ndo_set_mac_address = eth_mac_addr, 1555 .ndo_validate_addr = eth_validate_addr, 1556 .ndo_tx_timeout = orinoco_tx_timeout, 1557 }; 1558 1559 static int ezusb_probe(struct usb_interface *interface, 1560 const struct usb_device_id *id) 1561 { 1562 struct usb_device *udev = interface_to_usbdev(interface); 1563 struct orinoco_private *priv; 1564 struct hermes *hw; 1565 struct ezusb_priv *upriv = NULL; 1566 struct usb_interface_descriptor *iface_desc; 1567 struct usb_endpoint_descriptor *ep; 1568 const struct firmware *fw_entry = NULL; 1569 int retval = 0; 1570 int i; 1571 1572 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, 1573 ezusb_hard_reset, NULL); 1574 if (!priv) { 1575 err("Couldn't allocate orinocodev"); 1576 retval = -ENOMEM; 1577 goto exit; 1578 } 1579 1580 hw = &priv->hw; 1581 1582 upriv = priv->card; 1583 1584 mutex_init(&upriv->mtx); 1585 spin_lock_init(&upriv->reply_count_lock); 1586 1587 spin_lock_init(&upriv->req_lock); 1588 INIT_LIST_HEAD(&upriv->req_pending); 1589 INIT_LIST_HEAD(&upriv->req_active); 1590 1591 upriv->udev = udev; 1592 1593 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; 1594 hw->reg_spacing = HERMES_16BIT_REGSPACING; 1595 hw->priv = upriv; 1596 hw->ops = &ezusb_ops; 1597 1598 /* set up the endpoint information */ 1599 /* check out the endpoints */ 1600 1601 iface_desc = &interface->cur_altsetting->desc; 1602 for (i = 0; i < iface_desc->bNumEndpoints; ++i) { 1603 ep = &interface->cur_altsetting->endpoint[i].desc; 1604 1605 if (usb_endpoint_is_bulk_in(ep)) { 1606 /* we found a bulk in endpoint */ 1607 if (upriv->read_urb != NULL) { 1608 pr_warn("Found a second bulk in ep, ignored\n"); 1609 continue; 1610 } 1611 1612 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1613 if (!upriv->read_urb) 1614 goto error; 1615 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1616 pr_warn("bulk in: wMaxPacketSize!= 64\n"); 1617 if (ep->bEndpointAddress != (2 | USB_DIR_IN)) 1618 pr_warn("bulk in: bEndpointAddress: %d\n", 1619 ep->bEndpointAddress); 1620 upriv->read_pipe = usb_rcvbulkpipe(udev, 1621 ep-> 1622 bEndpointAddress); 1623 upriv->read_urb->transfer_buffer = 1624 kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1625 if (!upriv->read_urb->transfer_buffer) { 1626 err("Couldn't allocate IN buffer"); 1627 goto error; 1628 } 1629 } 1630 1631 if (usb_endpoint_is_bulk_out(ep)) { 1632 /* we found a bulk out endpoint */ 1633 if (upriv->bap_buf != NULL) { 1634 pr_warn("Found a second bulk out ep, ignored\n"); 1635 continue; 1636 } 1637 1638 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1639 pr_warn("bulk out: wMaxPacketSize != 64\n"); 1640 if (ep->bEndpointAddress != 2) 1641 pr_warn("bulk out: bEndpointAddress: %d\n", 1642 ep->bEndpointAddress); 1643 upriv->write_pipe = usb_sndbulkpipe(udev, 1644 ep-> 1645 bEndpointAddress); 1646 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1647 if (!upriv->bap_buf) { 1648 err("Couldn't allocate bulk_out_buffer"); 1649 goto error; 1650 } 1651 } 1652 } 1653 if (!upriv->bap_buf || !upriv->read_urb) { 1654 err("Didn't find the required bulk endpoints"); 1655 goto error; 1656 } 1657 1658 if (request_firmware(&fw_entry, "orinoco_ezusb_fw", 1659 &interface->dev) == 0) { 1660 firmware.size = fw_entry->size; 1661 firmware.code = fw_entry->data; 1662 } 1663 if (firmware.size && firmware.code) { 1664 if (ezusb_firmware_download(upriv, &firmware) < 0) 1665 goto error; 1666 } else { 1667 err("No firmware to download"); 1668 goto error; 1669 } 1670 1671 if (ezusb_hard_reset(priv) < 0) { 1672 err("Cannot reset the device"); 1673 goto error; 1674 } 1675 1676 /* If the firmware is already downloaded orinoco.c will call 1677 * ezusb_init but if the firmware is not already there, that will make 1678 * the kernel very unstable, so we try initializing here and quit in 1679 * case of error */ 1680 if (ezusb_init(hw) < 0) { 1681 err("Couldn't initialize the device"); 1682 err("Firmware may not be downloaded or may be wrong."); 1683 goto error; 1684 } 1685 1686 /* Initialise the main driver */ 1687 if (orinoco_init(priv) != 0) { 1688 err("orinoco_init() failed\n"); 1689 goto error; 1690 } 1691 1692 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { 1693 upriv->dev = NULL; 1694 err("%s: orinoco_if_add() failed", __func__); 1695 wiphy_unregister(priv_to_wiphy(priv)); 1696 goto error; 1697 } 1698 upriv->dev = priv->ndev; 1699 1700 goto exit; 1701 1702 error: 1703 ezusb_delete(upriv); 1704 if (upriv->dev) { 1705 /* upriv->dev was 0, so ezusb_delete() didn't free it */ 1706 free_orinocodev(priv); 1707 } 1708 upriv = NULL; 1709 retval = -EFAULT; 1710 exit: 1711 if (fw_entry) { 1712 firmware.code = NULL; 1713 firmware.size = 0; 1714 release_firmware(fw_entry); 1715 } 1716 usb_set_intfdata(interface, upriv); 1717 return retval; 1718 } 1719 1720 1721 static void ezusb_disconnect(struct usb_interface *intf) 1722 { 1723 struct ezusb_priv *upriv = usb_get_intfdata(intf); 1724 usb_set_intfdata(intf, NULL); 1725 ezusb_delete(upriv); 1726 printk(KERN_INFO PFX "Disconnected\n"); 1727 } 1728 1729 1730 /* usb specific object needed to register this driver with the usb subsystem */ 1731 static struct usb_driver orinoco_driver = { 1732 .name = DRIVER_NAME, 1733 .probe = ezusb_probe, 1734 .disconnect = ezusb_disconnect, 1735 .id_table = ezusb_table, 1736 .disable_hub_initiated_lpm = 1, 1737 }; 1738 1739 module_usb_driver(orinoco_driver); 1740 1741 MODULE_AUTHOR("Manuel Estrada Sainz"); 1742 MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); 1743 MODULE_LICENSE("Dual MPL/GPL"); 1744