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 68 #include "mic.h" 69 #include "orinoco.h" 70 71 #ifndef URB_ASYNC_UNLINK 72 #define URB_ASYNC_UNLINK 0 73 #endif 74 75 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */ 76 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00}; 77 #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2) 78 79 struct header_struct { 80 /* 802.3 */ 81 u8 dest[ETH_ALEN]; 82 u8 src[ETH_ALEN]; 83 __be16 len; 84 /* 802.2 */ 85 u8 dsap; 86 u8 ssap; 87 u8 ctrl; 88 /* SNAP */ 89 u8 oui[3]; 90 __be16 ethertype; 91 } __packed; 92 93 struct ez_usb_fw { 94 u16 size; 95 const u8 *code; 96 }; 97 98 static struct ez_usb_fw firmware = { 99 .size = 0, 100 .code = NULL, 101 }; 102 103 /* Debugging macros */ 104 #undef err 105 #define err(format, arg...) \ 106 do { printk(KERN_ERR PFX format "\n", ## arg); } while (0) 107 108 MODULE_FIRMWARE("orinoco_ezusb_fw"); 109 110 /* 111 * Under some conditions, the card gets stuck and stops paying attention 112 * to the world (i.e. data communication stalls) until we do something to 113 * it. Sending an INQ_TALLIES command seems to be enough and should be 114 * harmless otherwise. This behaviour has been observed when using the 115 * driver on a systemimager client during installation. In the past a 116 * timer was used to send INQ_TALLIES commands when there was no other 117 * activity, but it was troublesome and was removed. 118 */ 119 120 #define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */ 121 #define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */ 122 #define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */ 123 #define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */ 124 125 #define USB_MELCO_VENDOR_ID 0x0411 126 #define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */ 127 #define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */ 128 #define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */ 129 130 #define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */ 131 #define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */ 132 133 #define USB_AVAYA8_VENDOR_ID 0x0D98 134 #define USB_AVAYAE_VENDOR_ID 0x0D9E 135 #define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */ 136 137 #define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */ 138 #define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */ 139 #define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */ 140 #define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */ 141 142 #define USB_ELSA_VENDOR_ID 0x05CC 143 #define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */ 144 145 #define USB_LEGEND_VENDOR_ID 0x0E7C 146 #define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */ 147 148 #define USB_SAMSUNG_VENDOR_ID 0x04E8 149 #define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */ 150 #define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */ 151 #define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */ 152 153 #define USB_IGATE_VENDOR_ID 0x0681 154 #define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */ 155 156 #define USB_FUJITSU_VENDOR_ID 0x0BF8 157 #define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */ 158 159 #define USB_2WIRE_VENDOR_ID 0x1630 160 #define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */ 161 162 163 #define EZUSB_REQUEST_FW_TRANS 0xA0 164 #define EZUSB_REQUEST_TRIGER 0xAA 165 #define EZUSB_REQUEST_TRIG_AC 0xAC 166 #define EZUSB_CPUCS_REG 0x7F92 167 168 #define EZUSB_RID_TX 0x0700 169 #define EZUSB_RID_RX 0x0701 170 #define EZUSB_RID_INIT1 0x0702 171 #define EZUSB_RID_ACK 0x0710 172 #define EZUSB_RID_READ_PDA 0x0800 173 #define EZUSB_RID_PROG_INIT 0x0852 174 #define EZUSB_RID_PROG_SET_ADDR 0x0853 175 #define EZUSB_RID_PROG_BYTES 0x0854 176 #define EZUSB_RID_PROG_END 0x0855 177 #define EZUSB_RID_DOCMD 0x0860 178 179 /* Recognize info frames */ 180 #define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF)) 181 182 #define EZUSB_MAGIC 0x0210 183 184 #define EZUSB_FRAME_DATA 1 185 #define EZUSB_FRAME_CONTROL 2 186 187 #define DEF_TIMEOUT (3 * HZ) 188 189 #define BULK_BUF_SIZE 2048 190 191 #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) 192 193 #define FW_BUF_SIZE 64 194 #define FW_VAR_OFFSET_PTR 0x359 195 #define FW_VAR_VALUE 0 196 #define FW_HOLE_START 0x100 197 #define FW_HOLE_END 0x300 198 199 struct ezusb_packet { 200 __le16 magic; /* 0x0210 */ 201 u8 req_reply_count; 202 u8 ans_reply_count; 203 __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */ 204 __le16 size; /* transport size */ 205 __le16 crc; /* CRC up to here */ 206 __le16 hermes_len; 207 __le16 hermes_rid; 208 u8 data[0]; 209 } __packed; 210 211 /* Table of devices that work or may work with this driver */ 212 static struct usb_device_id ezusb_table[] = { 213 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)}, 214 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)}, 215 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)}, 216 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)}, 217 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)}, 218 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)}, 219 {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)}, 220 {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, 221 {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, 222 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)}, 223 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)}, 224 {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)}, 225 {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)}, 226 {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID, 227 0, 0)}, 228 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)}, 229 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)}, 230 {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)}, 231 {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)}, 232 {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)}, 233 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)}, 234 {} /* Terminating entry */ 235 }; 236 237 MODULE_DEVICE_TABLE(usb, ezusb_table); 238 239 /* Structure to hold all of our device specific stuff */ 240 struct ezusb_priv { 241 struct usb_device *udev; 242 struct net_device *dev; 243 struct mutex mtx; 244 spinlock_t req_lock; 245 struct list_head req_pending; 246 struct list_head req_active; 247 spinlock_t reply_count_lock; 248 u16 hermes_reg_fake[0x40]; 249 u8 *bap_buf; 250 struct urb *read_urb; 251 int read_pipe; 252 int write_pipe; 253 u8 reply_count; 254 }; 255 256 enum ezusb_state { 257 EZUSB_CTX_START, 258 EZUSB_CTX_QUEUED, 259 EZUSB_CTX_REQ_SUBMITTED, 260 EZUSB_CTX_REQ_COMPLETE, 261 EZUSB_CTX_RESP_RECEIVED, 262 EZUSB_CTX_REQ_TIMEOUT, 263 EZUSB_CTX_REQ_FAILED, 264 EZUSB_CTX_RESP_TIMEOUT, 265 EZUSB_CTX_REQSUBMIT_FAIL, 266 EZUSB_CTX_COMPLETE, 267 }; 268 269 struct request_context { 270 struct list_head list; 271 atomic_t refcount; 272 struct completion done; /* Signals that CTX is dead */ 273 int killed; 274 struct urb *outurb; /* OUT for req pkt */ 275 struct ezusb_priv *upriv; 276 struct ezusb_packet *buf; 277 int buf_length; 278 struct timer_list timer; /* Timeout handling */ 279 enum ezusb_state state; /* Current state */ 280 /* the RID that we will wait for */ 281 u16 out_rid; 282 u16 in_rid; 283 }; 284 285 286 /* Forward declarations */ 287 static void ezusb_ctx_complete(struct request_context *ctx); 288 static void ezusb_req_queue_run(struct ezusb_priv *upriv); 289 static void ezusb_bulk_in_callback(struct urb *urb); 290 291 static inline u8 ezusb_reply_inc(u8 count) 292 { 293 if (count < 0x7F) 294 return count + 1; 295 else 296 return 1; 297 } 298 299 static void ezusb_request_context_put(struct request_context *ctx) 300 { 301 if (!atomic_dec_and_test(&ctx->refcount)) 302 return; 303 304 WARN_ON(!ctx->done.done); 305 BUG_ON(ctx->outurb->status == -EINPROGRESS); 306 BUG_ON(timer_pending(&ctx->timer)); 307 usb_free_urb(ctx->outurb); 308 kfree(ctx->buf); 309 kfree(ctx); 310 } 311 312 static inline void ezusb_mod_timer(struct ezusb_priv *upriv, 313 struct timer_list *timer, 314 unsigned long expire) 315 { 316 if (!upriv->udev) 317 return; 318 mod_timer(timer, expire); 319 } 320 321 static void ezusb_request_timerfn(u_long _ctx) 322 { 323 struct request_context *ctx = (void *) _ctx; 324 325 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 326 if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) { 327 ctx->state = EZUSB_CTX_REQ_TIMEOUT; 328 } else { 329 ctx->state = EZUSB_CTX_RESP_TIMEOUT; 330 dev_dbg(&ctx->outurb->dev->dev, "couldn't unlink\n"); 331 atomic_inc(&ctx->refcount); 332 ctx->killed = 1; 333 ezusb_ctx_complete(ctx); 334 ezusb_request_context_put(ctx); 335 } 336 }; 337 338 static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv, 339 u16 out_rid, u16 in_rid) 340 { 341 struct request_context *ctx; 342 343 ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 344 if (!ctx) 345 return NULL; 346 347 ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC); 348 if (!ctx->buf) { 349 kfree(ctx); 350 return NULL; 351 } 352 ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC); 353 if (!ctx->outurb) { 354 kfree(ctx->buf); 355 kfree(ctx); 356 return NULL; 357 } 358 359 ctx->upriv = upriv; 360 ctx->state = EZUSB_CTX_START; 361 ctx->out_rid = out_rid; 362 ctx->in_rid = in_rid; 363 364 atomic_set(&ctx->refcount, 1); 365 init_completion(&ctx->done); 366 367 setup_timer(&ctx->timer, ezusb_request_timerfn, (u_long)ctx); 368 return ctx; 369 } 370 371 372 /* Hopefully the real complete_all will soon be exported, in the mean 373 * while this should work. */ 374 static inline void ezusb_complete_all(struct completion *comp) 375 { 376 complete(comp); 377 complete(comp); 378 complete(comp); 379 complete(comp); 380 } 381 382 static void ezusb_ctx_complete(struct request_context *ctx) 383 { 384 struct ezusb_priv *upriv = ctx->upriv; 385 unsigned long flags; 386 387 spin_lock_irqsave(&upriv->req_lock, flags); 388 389 list_del_init(&ctx->list); 390 if (upriv->udev) { 391 spin_unlock_irqrestore(&upriv->req_lock, flags); 392 ezusb_req_queue_run(upriv); 393 spin_lock_irqsave(&upriv->req_lock, flags); 394 } 395 396 switch (ctx->state) { 397 case EZUSB_CTX_COMPLETE: 398 case EZUSB_CTX_REQSUBMIT_FAIL: 399 case EZUSB_CTX_REQ_FAILED: 400 case EZUSB_CTX_REQ_TIMEOUT: 401 case EZUSB_CTX_RESP_TIMEOUT: 402 spin_unlock_irqrestore(&upriv->req_lock, flags); 403 404 if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) { 405 struct net_device *dev = upriv->dev; 406 struct net_device_stats *stats = &dev->stats; 407 408 if (ctx->state != EZUSB_CTX_COMPLETE) 409 stats->tx_errors++; 410 else 411 stats->tx_packets++; 412 413 netif_wake_queue(dev); 414 } 415 ezusb_complete_all(&ctx->done); 416 ezusb_request_context_put(ctx); 417 break; 418 419 default: 420 spin_unlock_irqrestore(&upriv->req_lock, flags); 421 if (!upriv->udev) { 422 /* This is normal, as all request contexts get flushed 423 * when the device is disconnected */ 424 err("Called, CTX not terminating, but device gone"); 425 ezusb_complete_all(&ctx->done); 426 ezusb_request_context_put(ctx); 427 break; 428 } 429 430 err("Called, CTX not in terminating state."); 431 /* Things are really bad if this happens. Just leak 432 * the CTX because it may still be linked to the 433 * queue or the OUT urb may still be active. 434 * Just leaking at least prevents an Oops or Panic. 435 */ 436 break; 437 } 438 } 439 440 /** 441 * ezusb_req_queue_run: 442 * Description: 443 * Note: Only one active CTX at any one time, because there's no 444 * other (reliable) way to match the response URB to the correct 445 * CTX. 446 **/ 447 static void ezusb_req_queue_run(struct ezusb_priv *upriv) 448 { 449 unsigned long flags; 450 struct request_context *ctx; 451 int result; 452 453 spin_lock_irqsave(&upriv->req_lock, flags); 454 455 if (!list_empty(&upriv->req_active)) 456 goto unlock; 457 458 if (list_empty(&upriv->req_pending)) 459 goto unlock; 460 461 ctx = 462 list_entry(upriv->req_pending.next, struct request_context, 463 list); 464 465 if (!ctx->upriv->udev) 466 goto unlock; 467 468 /* We need to split this off to avoid a race condition */ 469 list_move_tail(&ctx->list, &upriv->req_active); 470 471 if (ctx->state == EZUSB_CTX_QUEUED) { 472 atomic_inc(&ctx->refcount); 473 result = usb_submit_urb(ctx->outurb, GFP_ATOMIC); 474 if (result) { 475 ctx->state = EZUSB_CTX_REQSUBMIT_FAIL; 476 477 spin_unlock_irqrestore(&upriv->req_lock, flags); 478 479 err("Fatal, failed to submit command urb." 480 " error=%d\n", result); 481 482 ezusb_ctx_complete(ctx); 483 ezusb_request_context_put(ctx); 484 goto done; 485 } 486 487 ctx->state = EZUSB_CTX_REQ_SUBMITTED; 488 ezusb_mod_timer(ctx->upriv, &ctx->timer, 489 jiffies + DEF_TIMEOUT); 490 } 491 492 unlock: 493 spin_unlock_irqrestore(&upriv->req_lock, flags); 494 495 done: 496 return; 497 } 498 499 static void ezusb_req_enqueue_run(struct ezusb_priv *upriv, 500 struct request_context *ctx) 501 { 502 unsigned long flags; 503 504 spin_lock_irqsave(&upriv->req_lock, flags); 505 506 if (!ctx->upriv->udev) { 507 spin_unlock_irqrestore(&upriv->req_lock, flags); 508 goto done; 509 } 510 atomic_inc(&ctx->refcount); 511 list_add_tail(&ctx->list, &upriv->req_pending); 512 spin_unlock_irqrestore(&upriv->req_lock, flags); 513 514 ctx->state = EZUSB_CTX_QUEUED; 515 ezusb_req_queue_run(upriv); 516 517 done: 518 return; 519 } 520 521 static void ezusb_request_out_callback(struct urb *urb) 522 { 523 unsigned long flags; 524 enum ezusb_state state; 525 struct request_context *ctx = urb->context; 526 struct ezusb_priv *upriv = ctx->upriv; 527 528 spin_lock_irqsave(&upriv->req_lock, flags); 529 530 del_timer(&ctx->timer); 531 532 if (ctx->killed) { 533 spin_unlock_irqrestore(&upriv->req_lock, flags); 534 pr_warn("interrupt called with dead ctx\n"); 535 goto out; 536 } 537 538 state = ctx->state; 539 540 if (urb->status == 0) { 541 switch (state) { 542 case EZUSB_CTX_REQ_SUBMITTED: 543 if (ctx->in_rid) { 544 ctx->state = EZUSB_CTX_REQ_COMPLETE; 545 /* reply URB still pending */ 546 ezusb_mod_timer(upriv, &ctx->timer, 547 jiffies + DEF_TIMEOUT); 548 spin_unlock_irqrestore(&upriv->req_lock, 549 flags); 550 break; 551 } 552 /* fall through */ 553 case EZUSB_CTX_RESP_RECEIVED: 554 /* IN already received before this OUT-ACK */ 555 ctx->state = EZUSB_CTX_COMPLETE; 556 spin_unlock_irqrestore(&upriv->req_lock, flags); 557 ezusb_ctx_complete(ctx); 558 break; 559 560 default: 561 spin_unlock_irqrestore(&upriv->req_lock, flags); 562 err("Unexpected state(0x%x, %d) in OUT URB", 563 state, urb->status); 564 break; 565 } 566 } else { 567 /* If someone cancels the OUT URB then its status 568 * should be either -ECONNRESET or -ENOENT. 569 */ 570 switch (state) { 571 case EZUSB_CTX_REQ_SUBMITTED: 572 case EZUSB_CTX_RESP_RECEIVED: 573 ctx->state = EZUSB_CTX_REQ_FAILED; 574 /* fall through */ 575 576 case EZUSB_CTX_REQ_FAILED: 577 case EZUSB_CTX_REQ_TIMEOUT: 578 spin_unlock_irqrestore(&upriv->req_lock, flags); 579 580 ezusb_ctx_complete(ctx); 581 break; 582 583 default: 584 spin_unlock_irqrestore(&upriv->req_lock, flags); 585 586 err("Unexpected state(0x%x, %d) in OUT URB", 587 state, urb->status); 588 break; 589 } 590 } 591 out: 592 ezusb_request_context_put(ctx); 593 } 594 595 static void ezusb_request_in_callback(struct ezusb_priv *upriv, 596 struct urb *urb) 597 { 598 struct ezusb_packet *ans = urb->transfer_buffer; 599 struct request_context *ctx = NULL; 600 enum ezusb_state state; 601 unsigned long flags; 602 603 /* Find the CTX on the active queue that requested this URB */ 604 spin_lock_irqsave(&upriv->req_lock, flags); 605 if (upriv->udev) { 606 struct list_head *item; 607 608 list_for_each(item, &upriv->req_active) { 609 struct request_context *c; 610 int reply_count; 611 612 c = list_entry(item, struct request_context, list); 613 reply_count = 614 ezusb_reply_inc(c->buf->req_reply_count); 615 if ((ans->ans_reply_count == reply_count) 616 && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) { 617 ctx = c; 618 break; 619 } 620 netdev_dbg(upriv->dev, "Skipped (0x%x/0x%x) (%d/%d)\n", 621 le16_to_cpu(ans->hermes_rid), c->in_rid, 622 ans->ans_reply_count, reply_count); 623 } 624 } 625 626 if (ctx == NULL) { 627 spin_unlock_irqrestore(&upriv->req_lock, flags); 628 err("%s: got unexpected RID: 0x%04X", __func__, 629 le16_to_cpu(ans->hermes_rid)); 630 ezusb_req_queue_run(upriv); 631 return; 632 } 633 634 /* The data we want is in the in buffer, exchange */ 635 urb->transfer_buffer = ctx->buf; 636 ctx->buf = (void *) ans; 637 ctx->buf_length = urb->actual_length; 638 639 state = ctx->state; 640 switch (state) { 641 case EZUSB_CTX_REQ_SUBMITTED: 642 /* We have received our response URB before 643 * our request has been acknowledged. Do NOT 644 * destroy our CTX yet, because our OUT URB 645 * is still alive ... 646 */ 647 ctx->state = EZUSB_CTX_RESP_RECEIVED; 648 spin_unlock_irqrestore(&upriv->req_lock, flags); 649 650 /* Let the machine continue running. */ 651 break; 652 653 case EZUSB_CTX_REQ_COMPLETE: 654 /* This is the usual path: our request 655 * has already been acknowledged, and 656 * we have now received the reply. 657 */ 658 ctx->state = EZUSB_CTX_COMPLETE; 659 660 /* Stop the intimer */ 661 del_timer(&ctx->timer); 662 spin_unlock_irqrestore(&upriv->req_lock, flags); 663 664 /* Call the completion handler */ 665 ezusb_ctx_complete(ctx); 666 break; 667 668 default: 669 spin_unlock_irqrestore(&upriv->req_lock, flags); 670 671 pr_warn("Matched IN URB, unexpected context state(0x%x)\n", 672 state); 673 /* Throw this CTX away and try submitting another */ 674 del_timer(&ctx->timer); 675 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 676 usb_unlink_urb(ctx->outurb); 677 ezusb_req_queue_run(upriv); 678 break; 679 } /* switch */ 680 } 681 682 683 static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, 684 struct request_context *ctx) 685 { 686 switch (ctx->state) { 687 case EZUSB_CTX_QUEUED: 688 case EZUSB_CTX_REQ_SUBMITTED: 689 case EZUSB_CTX_REQ_COMPLETE: 690 case EZUSB_CTX_RESP_RECEIVED: 691 if (in_softirq()) { 692 /* If we get called from a timer, timeout timers don't 693 * get the chance to run themselves. So we make sure 694 * that we don't sleep for ever */ 695 int msecs = DEF_TIMEOUT * (1000 / HZ); 696 while (!ctx->done.done && msecs--) 697 udelay(1000); 698 } else { 699 wait_event_interruptible(ctx->done.wait, 700 ctx->done.done); 701 } 702 break; 703 default: 704 /* Done or failed - nothing to wait for */ 705 break; 706 } 707 } 708 709 static inline u16 build_crc(struct ezusb_packet *data) 710 { 711 u16 crc = 0; 712 u8 *bytes = (u8 *)data; 713 int i; 714 715 for (i = 0; i < 8; i++) 716 crc = (crc << 1) + bytes[i]; 717 718 return crc; 719 } 720 721 /** 722 * ezusb_fill_req: 723 * 724 * if data == NULL and length > 0 the data is assumed to be already in 725 * the target buffer and only the header is filled. 726 * 727 */ 728 static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid, 729 const void *data, u16 frame_type, u8 reply_count) 730 { 731 int total_size = sizeof(*req) + length; 732 733 BUG_ON(total_size > BULK_BUF_SIZE); 734 735 req->magic = cpu_to_le16(EZUSB_MAGIC); 736 req->req_reply_count = reply_count; 737 req->ans_reply_count = 0; 738 req->frame_type = cpu_to_le16(frame_type); 739 req->size = cpu_to_le16(length + 4); 740 req->crc = cpu_to_le16(build_crc(req)); 741 req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length)); 742 req->hermes_rid = cpu_to_le16(rid); 743 if (data) 744 memcpy(req->data, data, length); 745 return total_size; 746 } 747 748 static int ezusb_submit_in_urb(struct ezusb_priv *upriv) 749 { 750 int retval = 0; 751 void *cur_buf = upriv->read_urb->transfer_buffer; 752 753 if (upriv->read_urb->status == -EINPROGRESS) { 754 netdev_dbg(upriv->dev, "urb busy, not resubmiting\n"); 755 retval = -EBUSY; 756 goto exit; 757 } 758 usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe, 759 cur_buf, BULK_BUF_SIZE, 760 ezusb_bulk_in_callback, upriv); 761 upriv->read_urb->transfer_flags = 0; 762 retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC); 763 if (retval) 764 err("%s submit failed %d", __func__, retval); 765 766 exit: 767 return retval; 768 } 769 770 static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) 771 { 772 u8 res_val = reset; /* avoid argument promotion */ 773 774 if (!upriv->udev) { 775 err("%s: !upriv->udev", __func__); 776 return -EFAULT; 777 } 778 return usb_control_msg(upriv->udev, 779 usb_sndctrlpipe(upriv->udev, 0), 780 EZUSB_REQUEST_FW_TRANS, 781 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 782 USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val, 783 sizeof(res_val), DEF_TIMEOUT); 784 } 785 786 static int ezusb_firmware_download(struct ezusb_priv *upriv, 787 struct ez_usb_fw *fw) 788 { 789 u8 *fw_buffer; 790 int retval, addr; 791 int variant_offset; 792 793 fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); 794 if (!fw_buffer) { 795 printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); 796 return -ENOMEM; 797 } 798 /* 799 * This byte is 1 and should be replaced with 0. The offset is 800 * 0x10AD in version 0.0.6. The byte in question should follow 801 * the end of the code pointed to by the jump in the beginning 802 * of the firmware. Also, it is read by code located at 0x358. 803 */ 804 variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]); 805 if (variant_offset >= fw->size) { 806 printk(KERN_ERR PFX "Invalid firmware variant offset: " 807 "0x%04x\n", variant_offset); 808 retval = -EINVAL; 809 goto fail; 810 } 811 812 retval = ezusb_8051_cpucs(upriv, 1); 813 if (retval < 0) 814 goto fail; 815 for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) { 816 /* 0x100-0x300 should be left alone, it contains card 817 * specific data, like USB enumeration information */ 818 if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END)) 819 continue; 820 821 memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE); 822 if (variant_offset >= addr && 823 variant_offset < addr + FW_BUF_SIZE) { 824 netdev_dbg(upriv->dev, 825 "Patching card_variant byte at 0x%04X\n", 826 variant_offset); 827 fw_buffer[variant_offset - addr] = FW_VAR_VALUE; 828 } 829 retval = usb_control_msg(upriv->udev, 830 usb_sndctrlpipe(upriv->udev, 0), 831 EZUSB_REQUEST_FW_TRANS, 832 USB_TYPE_VENDOR | USB_RECIP_DEVICE 833 | USB_DIR_OUT, 834 addr, 0x0, 835 fw_buffer, FW_BUF_SIZE, 836 DEF_TIMEOUT); 837 838 if (retval < 0) 839 goto fail; 840 } 841 retval = ezusb_8051_cpucs(upriv, 0); 842 if (retval < 0) 843 goto fail; 844 845 goto exit; 846 fail: 847 printk(KERN_ERR PFX "Firmware download failed, error %d\n", 848 retval); 849 exit: 850 kfree(fw_buffer); 851 return retval; 852 } 853 854 static int ezusb_access_ltv(struct ezusb_priv *upriv, 855 struct request_context *ctx, 856 u16 length, const void *data, u16 frame_type, 857 void *ans_buff, unsigned ans_size, u16 *ans_length) 858 { 859 int req_size; 860 int retval = 0; 861 enum ezusb_state state; 862 863 BUG_ON(in_irq()); 864 865 if (!upriv->udev) { 866 retval = -ENODEV; 867 goto exit; 868 } 869 870 if (upriv->read_urb->status != -EINPROGRESS) 871 err("%s: in urb not pending", __func__); 872 873 /* protect upriv->reply_count, guarantee sequential numbers */ 874 spin_lock_bh(&upriv->reply_count_lock); 875 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, 876 frame_type, upriv->reply_count); 877 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, 878 ctx->buf, req_size, 879 ezusb_request_out_callback, ctx); 880 881 if (ctx->in_rid) 882 upriv->reply_count = ezusb_reply_inc(upriv->reply_count); 883 884 ezusb_req_enqueue_run(upriv, ctx); 885 886 spin_unlock_bh(&upriv->reply_count_lock); 887 888 if (ctx->in_rid) 889 ezusb_req_ctx_wait(upriv, ctx); 890 891 state = ctx->state; 892 switch (state) { 893 case EZUSB_CTX_COMPLETE: 894 retval = ctx->outurb->status; 895 break; 896 897 case EZUSB_CTX_QUEUED: 898 case EZUSB_CTX_REQ_SUBMITTED: 899 if (!ctx->in_rid) 900 break; 901 default: 902 err("%s: Unexpected context state %d", __func__, 903 state); 904 /* fall though */ 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 BUG_ON(!upriv); 1354 1355 upriv->reply_count = 0; 1356 /* Write the MAGIC number on the simulated registers to keep 1357 * orinoco.c happy */ 1358 hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); 1359 hermes_write_regn(hw, RXFID, EZUSB_RID_RX); 1360 1361 usb_kill_urb(upriv->read_urb); 1362 ezusb_submit_in_urb(upriv); 1363 1364 retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1, 1365 HERMES_BYTES_TO_RECLEN(2), "\x10\x00"); 1366 if (retval < 0) { 1367 printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval); 1368 return retval; 1369 } 1370 1371 retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL); 1372 if (retval < 0) { 1373 printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval); 1374 return retval; 1375 } 1376 1377 return 0; 1378 } 1379 1380 static void ezusb_bulk_in_callback(struct urb *urb) 1381 { 1382 struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context; 1383 struct ezusb_packet *ans = urb->transfer_buffer; 1384 u16 crc; 1385 u16 hermes_rid; 1386 1387 if (upriv->udev == NULL) 1388 return; 1389 1390 if (urb->status == -ETIMEDOUT) { 1391 /* When a device gets unplugged we get this every time 1392 * we resubmit, flooding the logs. Since we don't use 1393 * USB timeouts, it shouldn't happen any other time*/ 1394 pr_warn("%s: urb timed out, not resubmitting\n", __func__); 1395 return; 1396 } 1397 if (urb->status == -ECONNABORTED) { 1398 pr_warn("%s: connection abort, resubmitting urb\n", 1399 __func__); 1400 goto resubmit; 1401 } 1402 if ((urb->status == -EILSEQ) 1403 || (urb->status == -ENOENT) 1404 || (urb->status == -ECONNRESET)) { 1405 netdev_dbg(upriv->dev, "status %d, not resubmiting\n", 1406 urb->status); 1407 return; 1408 } 1409 if (urb->status) 1410 netdev_dbg(upriv->dev, "status: %d length: %d\n", 1411 urb->status, urb->actual_length); 1412 if (urb->actual_length < sizeof(*ans)) { 1413 err("%s: short read, ignoring", __func__); 1414 goto resubmit; 1415 } 1416 crc = build_crc(ans); 1417 if (le16_to_cpu(ans->crc) != crc) { 1418 err("CRC error, ignoring packet"); 1419 goto resubmit; 1420 } 1421 1422 hermes_rid = le16_to_cpu(ans->hermes_rid); 1423 if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) { 1424 ezusb_request_in_callback(upriv, urb); 1425 } else if (upriv->dev) { 1426 struct net_device *dev = upriv->dev; 1427 struct orinoco_private *priv = ndev_priv(dev); 1428 struct hermes *hw = &priv->hw; 1429 1430 if (hermes_rid == EZUSB_RID_RX) { 1431 __orinoco_ev_rx(dev, hw); 1432 } else { 1433 hermes_write_regn(hw, INFOFID, 1434 le16_to_cpu(ans->hermes_rid)); 1435 __orinoco_ev_info(dev, hw); 1436 } 1437 } 1438 1439 resubmit: 1440 if (upriv->udev) 1441 ezusb_submit_in_urb(upriv); 1442 } 1443 1444 static inline void ezusb_delete(struct ezusb_priv *upriv) 1445 { 1446 struct net_device *dev; 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 dev = upriv->dev; 1455 mutex_lock(&upriv->mtx); 1456 1457 upriv->udev = NULL; /* No timer will be rearmed from here */ 1458 1459 usb_kill_urb(upriv->read_urb); 1460 1461 spin_lock_irqsave(&upriv->req_lock, flags); 1462 list_for_each_safe(item, tmp_item, &upriv->req_active) { 1463 struct request_context *ctx; 1464 int err; 1465 1466 ctx = list_entry(item, struct request_context, list); 1467 atomic_inc(&ctx->refcount); 1468 1469 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 1470 err = usb_unlink_urb(ctx->outurb); 1471 1472 spin_unlock_irqrestore(&upriv->req_lock, flags); 1473 if (err == -EINPROGRESS) 1474 wait_for_completion(&ctx->done); 1475 1476 del_timer_sync(&ctx->timer); 1477 /* FIXME: there is an slight chance for the irq handler to 1478 * be running */ 1479 if (!list_empty(&ctx->list)) 1480 ezusb_ctx_complete(ctx); 1481 1482 ezusb_request_context_put(ctx); 1483 spin_lock_irqsave(&upriv->req_lock, flags); 1484 } 1485 spin_unlock_irqrestore(&upriv->req_lock, flags); 1486 1487 list_for_each_safe(item, tmp_item, &upriv->req_pending) 1488 ezusb_ctx_complete(list_entry(item, 1489 struct request_context, list)); 1490 1491 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS) 1492 printk(KERN_ERR PFX "Some URB in progress\n"); 1493 1494 mutex_unlock(&upriv->mtx); 1495 1496 if (upriv->read_urb) { 1497 kfree(upriv->read_urb->transfer_buffer); 1498 usb_free_urb(upriv->read_urb); 1499 } 1500 kfree(upriv->bap_buf); 1501 if (upriv->dev) { 1502 struct orinoco_private *priv = ndev_priv(upriv->dev); 1503 orinoco_if_del(priv); 1504 wiphy_unregister(priv_to_wiphy(upriv)); 1505 free_orinocodev(priv); 1506 } 1507 } 1508 1509 static void ezusb_lock_irqsave(spinlock_t *lock, 1510 unsigned long *flags) __acquires(lock) 1511 { 1512 spin_lock_bh(lock); 1513 } 1514 1515 static void ezusb_unlock_irqrestore(spinlock_t *lock, 1516 unsigned long *flags) __releases(lock) 1517 { 1518 spin_unlock_bh(lock); 1519 } 1520 1521 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) 1522 { 1523 spin_lock_bh(lock); 1524 } 1525 1526 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) 1527 { 1528 spin_unlock_bh(lock); 1529 } 1530 1531 static const struct hermes_ops ezusb_ops = { 1532 .init = ezusb_init, 1533 .cmd_wait = ezusb_docmd_wait, 1534 .init_cmd_wait = ezusb_doicmd_wait, 1535 .allocate = ezusb_allocate, 1536 .read_ltv = ezusb_read_ltv, 1537 .write_ltv = ezusb_write_ltv, 1538 .bap_pread = ezusb_bap_pread, 1539 .read_pda = ezusb_read_pda, 1540 .program_init = ezusb_program_init, 1541 .program_end = ezusb_program_end, 1542 .program = ezusb_program, 1543 .lock_irqsave = ezusb_lock_irqsave, 1544 .unlock_irqrestore = ezusb_unlock_irqrestore, 1545 .lock_irq = ezusb_lock_irq, 1546 .unlock_irq = ezusb_unlock_irq, 1547 }; 1548 1549 static const struct net_device_ops ezusb_netdev_ops = { 1550 .ndo_open = orinoco_open, 1551 .ndo_stop = orinoco_stop, 1552 .ndo_start_xmit = ezusb_xmit, 1553 .ndo_set_rx_mode = orinoco_set_multicast_list, 1554 .ndo_change_mtu = orinoco_change_mtu, 1555 .ndo_set_mac_address = eth_mac_addr, 1556 .ndo_validate_addr = eth_validate_addr, 1557 .ndo_tx_timeout = orinoco_tx_timeout, 1558 }; 1559 1560 static int ezusb_probe(struct usb_interface *interface, 1561 const struct usb_device_id *id) 1562 { 1563 struct usb_device *udev = interface_to_usbdev(interface); 1564 struct orinoco_private *priv; 1565 struct hermes *hw; 1566 struct ezusb_priv *upriv = NULL; 1567 struct usb_interface_descriptor *iface_desc; 1568 struct usb_endpoint_descriptor *ep; 1569 const struct firmware *fw_entry = NULL; 1570 int retval = 0; 1571 int i; 1572 1573 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, 1574 ezusb_hard_reset, NULL); 1575 if (!priv) { 1576 err("Couldn't allocate orinocodev"); 1577 retval = -ENOMEM; 1578 goto exit; 1579 } 1580 1581 hw = &priv->hw; 1582 1583 upriv = priv->card; 1584 1585 mutex_init(&upriv->mtx); 1586 spin_lock_init(&upriv->reply_count_lock); 1587 1588 spin_lock_init(&upriv->req_lock); 1589 INIT_LIST_HEAD(&upriv->req_pending); 1590 INIT_LIST_HEAD(&upriv->req_active); 1591 1592 upriv->udev = udev; 1593 1594 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; 1595 hw->reg_spacing = HERMES_16BIT_REGSPACING; 1596 hw->priv = upriv; 1597 hw->ops = &ezusb_ops; 1598 1599 /* set up the endpoint information */ 1600 /* check out the endpoints */ 1601 1602 iface_desc = &interface->altsetting[0].desc; 1603 for (i = 0; i < iface_desc->bNumEndpoints; ++i) { 1604 ep = &interface->altsetting[0].endpoint[i].desc; 1605 1606 if (usb_endpoint_is_bulk_in(ep)) { 1607 /* we found a bulk in endpoint */ 1608 if (upriv->read_urb != NULL) { 1609 pr_warn("Found a second bulk in ep, ignored\n"); 1610 continue; 1611 } 1612 1613 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1614 if (!upriv->read_urb) 1615 goto error; 1616 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1617 pr_warn("bulk in: wMaxPacketSize!= 64\n"); 1618 if (ep->bEndpointAddress != (2 | USB_DIR_IN)) 1619 pr_warn("bulk in: bEndpointAddress: %d\n", 1620 ep->bEndpointAddress); 1621 upriv->read_pipe = usb_rcvbulkpipe(udev, 1622 ep-> 1623 bEndpointAddress); 1624 upriv->read_urb->transfer_buffer = 1625 kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1626 if (!upriv->read_urb->transfer_buffer) { 1627 err("Couldn't allocate IN buffer"); 1628 goto error; 1629 } 1630 } 1631 1632 if (usb_endpoint_is_bulk_out(ep)) { 1633 /* we found a bulk out endpoint */ 1634 if (upriv->bap_buf != NULL) { 1635 pr_warn("Found a second bulk out ep, ignored\n"); 1636 continue; 1637 } 1638 1639 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1640 pr_warn("bulk out: wMaxPacketSize != 64\n"); 1641 if (ep->bEndpointAddress != 2) 1642 pr_warn("bulk out: bEndpointAddress: %d\n", 1643 ep->bEndpointAddress); 1644 upriv->write_pipe = usb_sndbulkpipe(udev, 1645 ep-> 1646 bEndpointAddress); 1647 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1648 if (!upriv->bap_buf) { 1649 err("Couldn't allocate bulk_out_buffer"); 1650 goto error; 1651 } 1652 } 1653 } 1654 if (!upriv->bap_buf || !upriv->read_urb) { 1655 err("Didn't find the required bulk endpoints"); 1656 goto error; 1657 } 1658 1659 if (request_firmware(&fw_entry, "orinoco_ezusb_fw", 1660 &interface->dev) == 0) { 1661 firmware.size = fw_entry->size; 1662 firmware.code = fw_entry->data; 1663 } 1664 if (firmware.size && firmware.code) { 1665 if (ezusb_firmware_download(upriv, &firmware) < 0) 1666 goto error; 1667 } else { 1668 err("No firmware to download"); 1669 goto error; 1670 } 1671 1672 if (ezusb_hard_reset(priv) < 0) { 1673 err("Cannot reset the device"); 1674 goto error; 1675 } 1676 1677 /* If the firmware is already downloaded orinoco.c will call 1678 * ezusb_init but if the firmware is not already there, that will make 1679 * the kernel very unstable, so we try initializing here and quit in 1680 * case of error */ 1681 if (ezusb_init(hw) < 0) { 1682 err("Couldn't initialize the device"); 1683 err("Firmware may not be downloaded or may be wrong."); 1684 goto error; 1685 } 1686 1687 /* Initialise the main driver */ 1688 if (orinoco_init(priv) != 0) { 1689 err("orinoco_init() failed\n"); 1690 goto error; 1691 } 1692 1693 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { 1694 upriv->dev = NULL; 1695 err("%s: orinoco_if_add() failed", __func__); 1696 wiphy_unregister(priv_to_wiphy(priv)); 1697 goto error; 1698 } 1699 upriv->dev = priv->ndev; 1700 1701 goto exit; 1702 1703 error: 1704 ezusb_delete(upriv); 1705 if (upriv->dev) { 1706 /* upriv->dev was 0, so ezusb_delete() didn't free it */ 1707 free_orinocodev(priv); 1708 } 1709 upriv = NULL; 1710 retval = -EFAULT; 1711 exit: 1712 if (fw_entry) { 1713 firmware.code = NULL; 1714 firmware.size = 0; 1715 release_firmware(fw_entry); 1716 } 1717 usb_set_intfdata(interface, upriv); 1718 return retval; 1719 } 1720 1721 1722 static void ezusb_disconnect(struct usb_interface *intf) 1723 { 1724 struct ezusb_priv *upriv = usb_get_intfdata(intf); 1725 usb_set_intfdata(intf, NULL); 1726 ezusb_delete(upriv); 1727 printk(KERN_INFO PFX "Disconnected\n"); 1728 } 1729 1730 1731 /* usb specific object needed to register this driver with the usb subsystem */ 1732 static struct usb_driver orinoco_driver = { 1733 .name = DRIVER_NAME, 1734 .probe = ezusb_probe, 1735 .disconnect = ezusb_disconnect, 1736 .id_table = ezusb_table, 1737 .disable_hub_initiated_lpm = 1, 1738 }; 1739 1740 module_usb_driver(orinoco_driver); 1741 1742 MODULE_AUTHOR("Manuel Estrada Sainz"); 1743 MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); 1744 MODULE_LICENSE("Dual MPL/GPL"); 1745