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 orinoco_private *priv = ndev_priv(dev); 407 struct net_device_stats *stats = &priv->stats; 408 409 if (ctx->state != EZUSB_CTX_COMPLETE) 410 stats->tx_errors++; 411 else 412 stats->tx_packets++; 413 414 netif_wake_queue(dev); 415 } 416 ezusb_complete_all(&ctx->done); 417 ezusb_request_context_put(ctx); 418 break; 419 420 default: 421 spin_unlock_irqrestore(&upriv->req_lock, flags); 422 if (!upriv->udev) { 423 /* This is normal, as all request contexts get flushed 424 * when the device is disconnected */ 425 err("Called, CTX not terminating, but device gone"); 426 ezusb_complete_all(&ctx->done); 427 ezusb_request_context_put(ctx); 428 break; 429 } 430 431 err("Called, CTX not in terminating state."); 432 /* Things are really bad if this happens. Just leak 433 * the CTX because it may still be linked to the 434 * queue or the OUT urb may still be active. 435 * Just leaking at least prevents an Oops or Panic. 436 */ 437 break; 438 } 439 } 440 441 /** 442 * ezusb_req_queue_run: 443 * Description: 444 * Note: Only one active CTX at any one time, because there's no 445 * other (reliable) way to match the response URB to the correct 446 * CTX. 447 **/ 448 static void ezusb_req_queue_run(struct ezusb_priv *upriv) 449 { 450 unsigned long flags; 451 struct request_context *ctx; 452 int result; 453 454 spin_lock_irqsave(&upriv->req_lock, flags); 455 456 if (!list_empty(&upriv->req_active)) 457 goto unlock; 458 459 if (list_empty(&upriv->req_pending)) 460 goto unlock; 461 462 ctx = 463 list_entry(upriv->req_pending.next, struct request_context, 464 list); 465 466 if (!ctx->upriv->udev) 467 goto unlock; 468 469 /* We need to split this off to avoid a race condition */ 470 list_move_tail(&ctx->list, &upriv->req_active); 471 472 if (ctx->state == EZUSB_CTX_QUEUED) { 473 atomic_inc(&ctx->refcount); 474 result = usb_submit_urb(ctx->outurb, GFP_ATOMIC); 475 if (result) { 476 ctx->state = EZUSB_CTX_REQSUBMIT_FAIL; 477 478 spin_unlock_irqrestore(&upriv->req_lock, flags); 479 480 err("Fatal, failed to submit command urb." 481 " error=%d\n", result); 482 483 ezusb_ctx_complete(ctx); 484 ezusb_request_context_put(ctx); 485 goto done; 486 } 487 488 ctx->state = EZUSB_CTX_REQ_SUBMITTED; 489 ezusb_mod_timer(ctx->upriv, &ctx->timer, 490 jiffies + DEF_TIMEOUT); 491 } 492 493 unlock: 494 spin_unlock_irqrestore(&upriv->req_lock, flags); 495 496 done: 497 return; 498 } 499 500 static void ezusb_req_enqueue_run(struct ezusb_priv *upriv, 501 struct request_context *ctx) 502 { 503 unsigned long flags; 504 505 spin_lock_irqsave(&upriv->req_lock, flags); 506 507 if (!ctx->upriv->udev) { 508 spin_unlock_irqrestore(&upriv->req_lock, flags); 509 goto done; 510 } 511 atomic_inc(&ctx->refcount); 512 list_add_tail(&ctx->list, &upriv->req_pending); 513 spin_unlock_irqrestore(&upriv->req_lock, flags); 514 515 ctx->state = EZUSB_CTX_QUEUED; 516 ezusb_req_queue_run(upriv); 517 518 done: 519 return; 520 } 521 522 static void ezusb_request_out_callback(struct urb *urb) 523 { 524 unsigned long flags; 525 enum ezusb_state state; 526 struct request_context *ctx = urb->context; 527 struct ezusb_priv *upriv = ctx->upriv; 528 529 spin_lock_irqsave(&upriv->req_lock, flags); 530 531 del_timer(&ctx->timer); 532 533 if (ctx->killed) { 534 spin_unlock_irqrestore(&upriv->req_lock, flags); 535 pr_warn("interrupt called with dead ctx\n"); 536 goto out; 537 } 538 539 state = ctx->state; 540 541 if (urb->status == 0) { 542 switch (state) { 543 case EZUSB_CTX_REQ_SUBMITTED: 544 if (ctx->in_rid) { 545 ctx->state = EZUSB_CTX_REQ_COMPLETE; 546 /* reply URB still pending */ 547 ezusb_mod_timer(upriv, &ctx->timer, 548 jiffies + DEF_TIMEOUT); 549 spin_unlock_irqrestore(&upriv->req_lock, 550 flags); 551 break; 552 } 553 /* fall through */ 554 case EZUSB_CTX_RESP_RECEIVED: 555 /* IN already received before this OUT-ACK */ 556 ctx->state = EZUSB_CTX_COMPLETE; 557 spin_unlock_irqrestore(&upriv->req_lock, flags); 558 ezusb_ctx_complete(ctx); 559 break; 560 561 default: 562 spin_unlock_irqrestore(&upriv->req_lock, flags); 563 err("Unexpected state(0x%x, %d) in OUT URB", 564 state, urb->status); 565 break; 566 } 567 } else { 568 /* If someone cancels the OUT URB then its status 569 * should be either -ECONNRESET or -ENOENT. 570 */ 571 switch (state) { 572 case EZUSB_CTX_REQ_SUBMITTED: 573 case EZUSB_CTX_RESP_RECEIVED: 574 ctx->state = EZUSB_CTX_REQ_FAILED; 575 /* fall through */ 576 577 case EZUSB_CTX_REQ_FAILED: 578 case EZUSB_CTX_REQ_TIMEOUT: 579 spin_unlock_irqrestore(&upriv->req_lock, flags); 580 581 ezusb_ctx_complete(ctx); 582 break; 583 584 default: 585 spin_unlock_irqrestore(&upriv->req_lock, flags); 586 587 err("Unexpected state(0x%x, %d) in OUT URB", 588 state, urb->status); 589 break; 590 } 591 } 592 out: 593 ezusb_request_context_put(ctx); 594 } 595 596 static void ezusb_request_in_callback(struct ezusb_priv *upriv, 597 struct urb *urb) 598 { 599 struct ezusb_packet *ans = urb->transfer_buffer; 600 struct request_context *ctx = NULL; 601 enum ezusb_state state; 602 unsigned long flags; 603 604 /* Find the CTX on the active queue that requested this URB */ 605 spin_lock_irqsave(&upriv->req_lock, flags); 606 if (upriv->udev) { 607 struct list_head *item; 608 609 list_for_each(item, &upriv->req_active) { 610 struct request_context *c; 611 int reply_count; 612 613 c = list_entry(item, struct request_context, list); 614 reply_count = 615 ezusb_reply_inc(c->buf->req_reply_count); 616 if ((ans->ans_reply_count == reply_count) 617 && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) { 618 ctx = c; 619 break; 620 } 621 netdev_dbg(upriv->dev, "Skipped (0x%x/0x%x) (%d/%d)\n", 622 le16_to_cpu(ans->hermes_rid), c->in_rid, 623 ans->ans_reply_count, reply_count); 624 } 625 } 626 627 if (ctx == NULL) { 628 spin_unlock_irqrestore(&upriv->req_lock, flags); 629 err("%s: got unexpected RID: 0x%04X", __func__, 630 le16_to_cpu(ans->hermes_rid)); 631 ezusb_req_queue_run(upriv); 632 return; 633 } 634 635 /* The data we want is in the in buffer, exchange */ 636 urb->transfer_buffer = ctx->buf; 637 ctx->buf = (void *) ans; 638 ctx->buf_length = urb->actual_length; 639 640 state = ctx->state; 641 switch (state) { 642 case EZUSB_CTX_REQ_SUBMITTED: 643 /* We have received our response URB before 644 * our request has been acknowledged. Do NOT 645 * destroy our CTX yet, because our OUT URB 646 * is still alive ... 647 */ 648 ctx->state = EZUSB_CTX_RESP_RECEIVED; 649 spin_unlock_irqrestore(&upriv->req_lock, flags); 650 651 /* Let the machine continue running. */ 652 break; 653 654 case EZUSB_CTX_REQ_COMPLETE: 655 /* This is the usual path: our request 656 * has already been acknowledged, and 657 * we have now received the reply. 658 */ 659 ctx->state = EZUSB_CTX_COMPLETE; 660 661 /* Stop the intimer */ 662 del_timer(&ctx->timer); 663 spin_unlock_irqrestore(&upriv->req_lock, flags); 664 665 /* Call the completion handler */ 666 ezusb_ctx_complete(ctx); 667 break; 668 669 default: 670 spin_unlock_irqrestore(&upriv->req_lock, flags); 671 672 pr_warn("Matched IN URB, unexpected context state(0x%x)\n", 673 state); 674 /* Throw this CTX away and try submitting another */ 675 del_timer(&ctx->timer); 676 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 677 usb_unlink_urb(ctx->outurb); 678 ezusb_req_queue_run(upriv); 679 break; 680 } /* switch */ 681 } 682 683 684 static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, 685 struct request_context *ctx) 686 { 687 switch (ctx->state) { 688 case EZUSB_CTX_QUEUED: 689 case EZUSB_CTX_REQ_SUBMITTED: 690 case EZUSB_CTX_REQ_COMPLETE: 691 case EZUSB_CTX_RESP_RECEIVED: 692 if (in_softirq()) { 693 /* If we get called from a timer, timeout timers don't 694 * get the chance to run themselves. So we make sure 695 * that we don't sleep for ever */ 696 int msecs = DEF_TIMEOUT * (1000 / HZ); 697 while (!ctx->done.done && msecs--) 698 udelay(1000); 699 } else { 700 wait_event_interruptible(ctx->done.wait, 701 ctx->done.done); 702 } 703 break; 704 default: 705 /* Done or failed - nothing to wait for */ 706 break; 707 } 708 } 709 710 static inline u16 build_crc(struct ezusb_packet *data) 711 { 712 u16 crc = 0; 713 u8 *bytes = (u8 *)data; 714 int i; 715 716 for (i = 0; i < 8; i++) 717 crc = (crc << 1) + bytes[i]; 718 719 return crc; 720 } 721 722 /** 723 * ezusb_fill_req: 724 * 725 * if data == NULL and length > 0 the data is assumed to be already in 726 * the target buffer and only the header is filled. 727 * 728 */ 729 static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid, 730 const void *data, u16 frame_type, u8 reply_count) 731 { 732 int total_size = sizeof(*req) + length; 733 734 BUG_ON(total_size > BULK_BUF_SIZE); 735 736 req->magic = cpu_to_le16(EZUSB_MAGIC); 737 req->req_reply_count = reply_count; 738 req->ans_reply_count = 0; 739 req->frame_type = cpu_to_le16(frame_type); 740 req->size = cpu_to_le16(length + 4); 741 req->crc = cpu_to_le16(build_crc(req)); 742 req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length)); 743 req->hermes_rid = cpu_to_le16(rid); 744 if (data) 745 memcpy(req->data, data, length); 746 return total_size; 747 } 748 749 static int ezusb_submit_in_urb(struct ezusb_priv *upriv) 750 { 751 int retval = 0; 752 void *cur_buf = upriv->read_urb->transfer_buffer; 753 754 if (upriv->read_urb->status == -EINPROGRESS) { 755 netdev_dbg(upriv->dev, "urb busy, not resubmiting\n"); 756 retval = -EBUSY; 757 goto exit; 758 } 759 usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe, 760 cur_buf, BULK_BUF_SIZE, 761 ezusb_bulk_in_callback, upriv); 762 upriv->read_urb->transfer_flags = 0; 763 retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC); 764 if (retval) 765 err("%s submit failed %d", __func__, retval); 766 767 exit: 768 return retval; 769 } 770 771 static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) 772 { 773 u8 res_val = reset; /* avoid argument promotion */ 774 775 if (!upriv->udev) { 776 err("%s: !upriv->udev", __func__); 777 return -EFAULT; 778 } 779 return usb_control_msg(upriv->udev, 780 usb_sndctrlpipe(upriv->udev, 0), 781 EZUSB_REQUEST_FW_TRANS, 782 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 783 USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val, 784 sizeof(res_val), DEF_TIMEOUT); 785 } 786 787 static int ezusb_firmware_download(struct ezusb_priv *upriv, 788 struct ez_usb_fw *fw) 789 { 790 u8 *fw_buffer; 791 int retval, addr; 792 int variant_offset; 793 794 fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); 795 if (!fw_buffer) { 796 printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); 797 return -ENOMEM; 798 } 799 /* 800 * This byte is 1 and should be replaced with 0. The offset is 801 * 0x10AD in version 0.0.6. The byte in question should follow 802 * the end of the code pointed to by the jump in the beginning 803 * of the firmware. Also, it is read by code located at 0x358. 804 */ 805 variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]); 806 if (variant_offset >= fw->size) { 807 printk(KERN_ERR PFX "Invalid firmware variant offset: " 808 "0x%04x\n", variant_offset); 809 retval = -EINVAL; 810 goto fail; 811 } 812 813 retval = ezusb_8051_cpucs(upriv, 1); 814 if (retval < 0) 815 goto fail; 816 for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) { 817 /* 0x100-0x300 should be left alone, it contains card 818 * specific data, like USB enumeration information */ 819 if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END)) 820 continue; 821 822 memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE); 823 if (variant_offset >= addr && 824 variant_offset < addr + FW_BUF_SIZE) { 825 netdev_dbg(upriv->dev, 826 "Patching card_variant byte at 0x%04X\n", 827 variant_offset); 828 fw_buffer[variant_offset - addr] = FW_VAR_VALUE; 829 } 830 retval = usb_control_msg(upriv->udev, 831 usb_sndctrlpipe(upriv->udev, 0), 832 EZUSB_REQUEST_FW_TRANS, 833 USB_TYPE_VENDOR | USB_RECIP_DEVICE 834 | USB_DIR_OUT, 835 addr, 0x0, 836 fw_buffer, FW_BUF_SIZE, 837 DEF_TIMEOUT); 838 839 if (retval < 0) 840 goto fail; 841 } 842 retval = ezusb_8051_cpucs(upriv, 0); 843 if (retval < 0) 844 goto fail; 845 846 goto exit; 847 fail: 848 printk(KERN_ERR PFX "Firmware download failed, error %d\n", 849 retval); 850 exit: 851 kfree(fw_buffer); 852 return retval; 853 } 854 855 static int ezusb_access_ltv(struct ezusb_priv *upriv, 856 struct request_context *ctx, 857 u16 length, const void *data, u16 frame_type, 858 void *ans_buff, unsigned ans_size, u16 *ans_length) 859 { 860 int req_size; 861 int retval = 0; 862 enum ezusb_state state; 863 864 BUG_ON(in_irq()); 865 866 if (!upriv->udev) { 867 retval = -ENODEV; 868 goto exit; 869 } 870 871 if (upriv->read_urb->status != -EINPROGRESS) 872 err("%s: in urb not pending", __func__); 873 874 /* protect upriv->reply_count, guarantee sequential numbers */ 875 spin_lock_bh(&upriv->reply_count_lock); 876 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, 877 frame_type, upriv->reply_count); 878 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, 879 ctx->buf, req_size, 880 ezusb_request_out_callback, ctx); 881 882 if (ctx->in_rid) 883 upriv->reply_count = ezusb_reply_inc(upriv->reply_count); 884 885 ezusb_req_enqueue_run(upriv, ctx); 886 887 spin_unlock_bh(&upriv->reply_count_lock); 888 889 if (ctx->in_rid) 890 ezusb_req_ctx_wait(upriv, ctx); 891 892 state = ctx->state; 893 switch (state) { 894 case EZUSB_CTX_COMPLETE: 895 retval = ctx->outurb->status; 896 break; 897 898 case EZUSB_CTX_QUEUED: 899 case EZUSB_CTX_REQ_SUBMITTED: 900 if (!ctx->in_rid) 901 break; 902 default: 903 err("%s: Unexpected context state %d", __func__, 904 state); 905 /* fall though */ 906 case EZUSB_CTX_REQ_TIMEOUT: 907 case EZUSB_CTX_REQ_FAILED: 908 case EZUSB_CTX_RESP_TIMEOUT: 909 case EZUSB_CTX_REQSUBMIT_FAIL: 910 printk(KERN_ERR PFX "Access failed, resetting (state %d," 911 " reply_count %d)\n", state, upriv->reply_count); 912 upriv->reply_count = 0; 913 if (state == EZUSB_CTX_REQ_TIMEOUT 914 || state == EZUSB_CTX_RESP_TIMEOUT) { 915 printk(KERN_ERR PFX "ctx timed out\n"); 916 retval = -ETIMEDOUT; 917 } else { 918 printk(KERN_ERR PFX "ctx failed\n"); 919 retval = -EFAULT; 920 } 921 goto exit; 922 } 923 if (ctx->in_rid) { 924 struct ezusb_packet *ans = ctx->buf; 925 unsigned exp_len; 926 927 if (ans->hermes_len != 0) 928 exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12; 929 else 930 exp_len = 14; 931 932 if (exp_len != ctx->buf_length) { 933 err("%s: length mismatch for RID 0x%04x: " 934 "expected %d, got %d", __func__, 935 ctx->in_rid, exp_len, ctx->buf_length); 936 retval = -EIO; 937 goto exit; 938 } 939 940 if (ans_buff) 941 memcpy(ans_buff, ans->data, min(exp_len, ans_size)); 942 if (ans_length) 943 *ans_length = le16_to_cpu(ans->hermes_len); 944 } 945 exit: 946 ezusb_request_context_put(ctx); 947 return retval; 948 } 949 950 static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, 951 u16 length, const void *data) 952 { 953 struct ezusb_priv *upriv = hw->priv; 954 u16 frame_type; 955 struct request_context *ctx; 956 957 if (length == 0) 958 return -EINVAL; 959 960 length = HERMES_RECLEN_TO_BYTES(length); 961 962 /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be 963 * set to be empty, but the USB bridge doesn't like it */ 964 if (length == 0) 965 return 0; 966 967 ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK); 968 if (!ctx) 969 return -ENOMEM; 970 971 if (rid == EZUSB_RID_TX) 972 frame_type = EZUSB_FRAME_DATA; 973 else 974 frame_type = EZUSB_FRAME_CONTROL; 975 976 return ezusb_access_ltv(upriv, ctx, length, data, frame_type, 977 NULL, 0, NULL); 978 } 979 980 static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, 981 unsigned bufsize, u16 *length, void *buf) 982 { 983 struct ezusb_priv *upriv = hw->priv; 984 struct request_context *ctx; 985 986 if (bufsize % 2) 987 return -EINVAL; 988 989 ctx = ezusb_alloc_ctx(upriv, rid, rid); 990 if (!ctx) 991 return -ENOMEM; 992 993 return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, 994 buf, bufsize, length); 995 } 996 997 static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, 998 u16 parm2, struct hermes_response *resp) 999 { 1000 struct ezusb_priv *upriv = hw->priv; 1001 struct request_context *ctx; 1002 1003 __le16 data[4] = { 1004 cpu_to_le16(cmd), 1005 cpu_to_le16(parm0), 1006 cpu_to_le16(parm1), 1007 cpu_to_le16(parm2), 1008 }; 1009 netdev_dbg(upriv->dev, 1010 "0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X\n", cmd, 1011 parm0, parm1, parm2); 1012 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1013 if (!ctx) 1014 return -ENOMEM; 1015 1016 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1017 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1018 } 1019 1020 static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, 1021 struct hermes_response *resp) 1022 { 1023 struct ezusb_priv *upriv = hw->priv; 1024 struct request_context *ctx; 1025 1026 __le16 data[4] = { 1027 cpu_to_le16(cmd), 1028 cpu_to_le16(parm0), 1029 0, 1030 0, 1031 }; 1032 netdev_dbg(upriv->dev, "0x%04X, parm0 0x%04X\n", cmd, parm0); 1033 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); 1034 if (!ctx) 1035 return -ENOMEM; 1036 1037 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1038 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1039 } 1040 1041 static int ezusb_bap_pread(struct hermes *hw, int bap, 1042 void *buf, int len, u16 id, u16 offset) 1043 { 1044 struct ezusb_priv *upriv = hw->priv; 1045 struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer; 1046 int actual_length = upriv->read_urb->actual_length; 1047 1048 if (id == EZUSB_RID_RX) { 1049 if ((sizeof(*ans) + offset + len) > actual_length) { 1050 printk(KERN_ERR PFX "BAP read beyond buffer end " 1051 "in rx frame\n"); 1052 return -EINVAL; 1053 } 1054 memcpy(buf, ans->data + offset, len); 1055 return 0; 1056 } 1057 1058 if (EZUSB_IS_INFO(id)) { 1059 /* Include 4 bytes for length/type */ 1060 if ((sizeof(*ans) + offset + len - 4) > actual_length) { 1061 printk(KERN_ERR PFX "BAP read beyond buffer end " 1062 "in info frame\n"); 1063 return -EFAULT; 1064 } 1065 memcpy(buf, ans->data + offset - 4, len); 1066 } else { 1067 printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id); 1068 return -EINVAL; 1069 } 1070 1071 return 0; 1072 } 1073 1074 static int ezusb_read_pda(struct hermes *hw, __le16 *pda, 1075 u32 pda_addr, u16 pda_len) 1076 { 1077 struct ezusb_priv *upriv = hw->priv; 1078 struct request_context *ctx; 1079 __le16 data[] = { 1080 cpu_to_le16(pda_addr & 0xffff), 1081 cpu_to_le16(pda_len - 4) 1082 }; 1083 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); 1084 if (!ctx) 1085 return -ENOMEM; 1086 1087 /* wl_lkm does not include PDA size in the PDA area. 1088 * We will pad the information into pda, so other routines 1089 * don't have to be modified */ 1090 pda[0] = cpu_to_le16(pda_len - 2); 1091 /* Includes CFG_PROD_DATA but not itself */ 1092 pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ 1093 1094 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1095 EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, 1096 NULL); 1097 } 1098 1099 static int ezusb_program_init(struct hermes *hw, u32 entry_point) 1100 { 1101 struct ezusb_priv *upriv = hw->priv; 1102 struct request_context *ctx; 1103 __le32 data = cpu_to_le32(entry_point); 1104 1105 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK); 1106 if (!ctx) 1107 return -ENOMEM; 1108 1109 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1110 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1111 } 1112 1113 static int ezusb_program_end(struct hermes *hw) 1114 { 1115 struct ezusb_priv *upriv = hw->priv; 1116 struct request_context *ctx; 1117 1118 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); 1119 if (!ctx) 1120 return -ENOMEM; 1121 1122 return ezusb_access_ltv(upriv, ctx, 0, NULL, 1123 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1124 } 1125 1126 static int ezusb_program_bytes(struct hermes *hw, const char *buf, 1127 u32 addr, u32 len) 1128 { 1129 struct ezusb_priv *upriv = hw->priv; 1130 struct request_context *ctx; 1131 __le32 data = cpu_to_le32(addr); 1132 int err; 1133 1134 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); 1135 if (!ctx) 1136 return -ENOMEM; 1137 1138 err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, 1139 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1140 if (err) 1141 return err; 1142 1143 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); 1144 if (!ctx) 1145 return -ENOMEM; 1146 1147 return ezusb_access_ltv(upriv, ctx, len, buf, 1148 EZUSB_FRAME_CONTROL, NULL, 0, NULL); 1149 } 1150 1151 static int ezusb_program(struct hermes *hw, const char *buf, 1152 u32 addr, u32 len) 1153 { 1154 u32 ch_addr; 1155 u32 ch_len; 1156 int err = 0; 1157 1158 /* We can only send 2048 bytes out of the bulk xmit at a time, 1159 * so we have to split any programming into chunks of <2048 1160 * bytes. */ 1161 1162 ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; 1163 ch_addr = addr; 1164 1165 while (ch_addr < (addr + len)) { 1166 pr_debug("Programming subblock of length %d " 1167 "to address 0x%08x. Data @ %p\n", 1168 ch_len, ch_addr, &buf[ch_addr - addr]); 1169 1170 err = ezusb_program_bytes(hw, &buf[ch_addr - addr], 1171 ch_addr, ch_len); 1172 if (err) 1173 break; 1174 1175 ch_addr += ch_len; 1176 ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? 1177 (addr + len - ch_addr) : MAX_DL_SIZE; 1178 } 1179 1180 return err; 1181 } 1182 1183 static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) 1184 { 1185 struct orinoco_private *priv = ndev_priv(dev); 1186 struct net_device_stats *stats = &priv->stats; 1187 struct ezusb_priv *upriv = priv->card; 1188 u8 mic[MICHAEL_MIC_LEN + 1]; 1189 int err = 0; 1190 int tx_control; 1191 unsigned long flags; 1192 struct request_context *ctx; 1193 u8 *buf; 1194 int tx_size; 1195 1196 if (!netif_running(dev)) { 1197 printk(KERN_ERR "%s: Tx on stopped device!\n", 1198 dev->name); 1199 return NETDEV_TX_BUSY; 1200 } 1201 1202 if (netif_queue_stopped(dev)) { 1203 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", 1204 dev->name); 1205 return NETDEV_TX_BUSY; 1206 } 1207 1208 if (orinoco_lock(priv, &flags) != 0) { 1209 printk(KERN_ERR 1210 "%s: ezusb_xmit() called while hw_unavailable\n", 1211 dev->name); 1212 return NETDEV_TX_BUSY; 1213 } 1214 1215 if (!netif_carrier_ok(dev) || 1216 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { 1217 /* Oops, the firmware hasn't established a connection, 1218 silently drop the packet (this seems to be the 1219 safest approach). */ 1220 goto drop; 1221 } 1222 1223 /* Check packet length */ 1224 if (skb->len < ETH_HLEN) 1225 goto drop; 1226 1227 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); 1228 if (!ctx) 1229 goto busy; 1230 1231 memset(ctx->buf, 0, BULK_BUF_SIZE); 1232 buf = ctx->buf->data; 1233 1234 tx_control = 0; 1235 1236 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, 1237 &mic[0]); 1238 if (err) 1239 goto drop; 1240 1241 { 1242 __le16 *tx_cntl = (__le16 *)buf; 1243 *tx_cntl = cpu_to_le16(tx_control); 1244 buf += sizeof(*tx_cntl); 1245 } 1246 1247 memcpy(buf, skb->data, skb->len); 1248 buf += skb->len; 1249 1250 if (tx_control & HERMES_TXCTRL_MIC) { 1251 u8 *m = mic; 1252 /* Mic has been offset so it can be copied to an even 1253 * address. We're copying eveything anyway, so we 1254 * don't need to copy that first byte. */ 1255 if (skb->len % 2) 1256 m++; 1257 memcpy(buf, m, MICHAEL_MIC_LEN); 1258 buf += MICHAEL_MIC_LEN; 1259 } 1260 1261 /* Finally, we actually initiate the send */ 1262 netif_stop_queue(dev); 1263 1264 /* The card may behave better if we send evenly sized usb transfers */ 1265 tx_size = ALIGN(buf - ctx->buf->data, 2); 1266 1267 err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, 1268 EZUSB_FRAME_DATA, NULL, 0, NULL); 1269 1270 if (err) { 1271 netif_start_queue(dev); 1272 if (net_ratelimit()) 1273 printk(KERN_ERR "%s: Error %d transmitting packet\n", 1274 dev->name, err); 1275 goto busy; 1276 } 1277 1278 dev->trans_start = jiffies; 1279 stats->tx_bytes += skb->len; 1280 goto ok; 1281 1282 drop: 1283 stats->tx_errors++; 1284 stats->tx_dropped++; 1285 1286 ok: 1287 orinoco_unlock(priv, &flags); 1288 dev_kfree_skb(skb); 1289 return NETDEV_TX_OK; 1290 1291 busy: 1292 orinoco_unlock(priv, &flags); 1293 return NETDEV_TX_BUSY; 1294 } 1295 1296 static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid) 1297 { 1298 *fid = EZUSB_RID_TX; 1299 return 0; 1300 } 1301 1302 1303 static int ezusb_hard_reset(struct orinoco_private *priv) 1304 { 1305 struct ezusb_priv *upriv = priv->card; 1306 int retval = ezusb_8051_cpucs(upriv, 1); 1307 1308 if (retval < 0) { 1309 err("Failed to reset"); 1310 return retval; 1311 } 1312 1313 retval = ezusb_8051_cpucs(upriv, 0); 1314 if (retval < 0) { 1315 err("Failed to unreset"); 1316 return retval; 1317 } 1318 1319 netdev_dbg(upriv->dev, "sending control message\n"); 1320 retval = usb_control_msg(upriv->udev, 1321 usb_sndctrlpipe(upriv->udev, 0), 1322 EZUSB_REQUEST_TRIGER, 1323 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1324 USB_DIR_OUT, 0x0, 0x0, NULL, 0, 1325 DEF_TIMEOUT); 1326 if (retval < 0) { 1327 err("EZUSB_REQUEST_TRIGER failed retval %d", retval); 1328 return retval; 1329 } 1330 #if 0 1331 dbg("Sending EZUSB_REQUEST_TRIG_AC"); 1332 retval = usb_control_msg(upriv->udev, 1333 usb_sndctrlpipe(upriv->udev, 0), 1334 EZUSB_REQUEST_TRIG_AC, 1335 USB_TYPE_VENDOR | USB_RECIP_DEVICE | 1336 USB_DIR_OUT, 0x00FA, 0x0, NULL, 0, 1337 DEF_TIMEOUT); 1338 if (retval < 0) { 1339 err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval); 1340 return retval; 1341 } 1342 #endif 1343 1344 return 0; 1345 } 1346 1347 1348 static int ezusb_init(struct hermes *hw) 1349 { 1350 struct ezusb_priv *upriv = hw->priv; 1351 int retval; 1352 1353 BUG_ON(in_interrupt()); 1354 BUG_ON(!upriv); 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 net_device *dev; 1448 struct list_head *item; 1449 struct list_head *tmp_item; 1450 unsigned long flags; 1451 1452 BUG_ON(in_interrupt()); 1453 BUG_ON(!upriv); 1454 1455 dev = upriv->dev; 1456 mutex_lock(&upriv->mtx); 1457 1458 upriv->udev = NULL; /* No timer will be rearmed from here */ 1459 1460 usb_kill_urb(upriv->read_urb); 1461 1462 spin_lock_irqsave(&upriv->req_lock, flags); 1463 list_for_each_safe(item, tmp_item, &upriv->req_active) { 1464 struct request_context *ctx; 1465 int err; 1466 1467 ctx = list_entry(item, struct request_context, list); 1468 atomic_inc(&ctx->refcount); 1469 1470 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; 1471 err = usb_unlink_urb(ctx->outurb); 1472 1473 spin_unlock_irqrestore(&upriv->req_lock, flags); 1474 if (err == -EINPROGRESS) 1475 wait_for_completion(&ctx->done); 1476 1477 del_timer_sync(&ctx->timer); 1478 /* FIXME: there is an slight chance for the irq handler to 1479 * be running */ 1480 if (!list_empty(&ctx->list)) 1481 ezusb_ctx_complete(ctx); 1482 1483 ezusb_request_context_put(ctx); 1484 spin_lock_irqsave(&upriv->req_lock, flags); 1485 } 1486 spin_unlock_irqrestore(&upriv->req_lock, flags); 1487 1488 list_for_each_safe(item, tmp_item, &upriv->req_pending) 1489 ezusb_ctx_complete(list_entry(item, 1490 struct request_context, list)); 1491 1492 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS) 1493 printk(KERN_ERR PFX "Some URB in progress\n"); 1494 1495 mutex_unlock(&upriv->mtx); 1496 1497 if (upriv->read_urb) { 1498 kfree(upriv->read_urb->transfer_buffer); 1499 usb_free_urb(upriv->read_urb); 1500 } 1501 kfree(upriv->bap_buf); 1502 if (upriv->dev) { 1503 struct orinoco_private *priv = ndev_priv(upriv->dev); 1504 orinoco_if_del(priv); 1505 wiphy_unregister(priv_to_wiphy(upriv)); 1506 free_orinocodev(priv); 1507 } 1508 } 1509 1510 static void ezusb_lock_irqsave(spinlock_t *lock, 1511 unsigned long *flags) __acquires(lock) 1512 { 1513 spin_lock_bh(lock); 1514 } 1515 1516 static void ezusb_unlock_irqrestore(spinlock_t *lock, 1517 unsigned long *flags) __releases(lock) 1518 { 1519 spin_unlock_bh(lock); 1520 } 1521 1522 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) 1523 { 1524 spin_lock_bh(lock); 1525 } 1526 1527 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) 1528 { 1529 spin_unlock_bh(lock); 1530 } 1531 1532 static const struct hermes_ops ezusb_ops = { 1533 .init = ezusb_init, 1534 .cmd_wait = ezusb_docmd_wait, 1535 .init_cmd_wait = ezusb_doicmd_wait, 1536 .allocate = ezusb_allocate, 1537 .read_ltv = ezusb_read_ltv, 1538 .write_ltv = ezusb_write_ltv, 1539 .bap_pread = ezusb_bap_pread, 1540 .read_pda = ezusb_read_pda, 1541 .program_init = ezusb_program_init, 1542 .program_end = ezusb_program_end, 1543 .program = ezusb_program, 1544 .lock_irqsave = ezusb_lock_irqsave, 1545 .unlock_irqrestore = ezusb_unlock_irqrestore, 1546 .lock_irq = ezusb_lock_irq, 1547 .unlock_irq = ezusb_unlock_irq, 1548 }; 1549 1550 static const struct net_device_ops ezusb_netdev_ops = { 1551 .ndo_open = orinoco_open, 1552 .ndo_stop = orinoco_stop, 1553 .ndo_start_xmit = ezusb_xmit, 1554 .ndo_set_rx_mode = orinoco_set_multicast_list, 1555 .ndo_change_mtu = orinoco_change_mtu, 1556 .ndo_set_mac_address = eth_mac_addr, 1557 .ndo_validate_addr = eth_validate_addr, 1558 .ndo_tx_timeout = orinoco_tx_timeout, 1559 .ndo_get_stats = orinoco_get_stats, 1560 }; 1561 1562 static int ezusb_probe(struct usb_interface *interface, 1563 const struct usb_device_id *id) 1564 { 1565 struct usb_device *udev = interface_to_usbdev(interface); 1566 struct orinoco_private *priv; 1567 struct hermes *hw; 1568 struct ezusb_priv *upriv = NULL; 1569 struct usb_interface_descriptor *iface_desc; 1570 struct usb_endpoint_descriptor *ep; 1571 const struct firmware *fw_entry = NULL; 1572 int retval = 0; 1573 int i; 1574 1575 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, 1576 ezusb_hard_reset, NULL); 1577 if (!priv) { 1578 err("Couldn't allocate orinocodev"); 1579 retval = -ENOMEM; 1580 goto exit; 1581 } 1582 1583 hw = &priv->hw; 1584 1585 upriv = priv->card; 1586 1587 mutex_init(&upriv->mtx); 1588 spin_lock_init(&upriv->reply_count_lock); 1589 1590 spin_lock_init(&upriv->req_lock); 1591 INIT_LIST_HEAD(&upriv->req_pending); 1592 INIT_LIST_HEAD(&upriv->req_active); 1593 1594 upriv->udev = udev; 1595 1596 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; 1597 hw->reg_spacing = HERMES_16BIT_REGSPACING; 1598 hw->priv = upriv; 1599 hw->ops = &ezusb_ops; 1600 1601 /* set up the endpoint information */ 1602 /* check out the endpoints */ 1603 1604 iface_desc = &interface->altsetting[0].desc; 1605 for (i = 0; i < iface_desc->bNumEndpoints; ++i) { 1606 ep = &interface->altsetting[0].endpoint[i].desc; 1607 1608 if (usb_endpoint_is_bulk_in(ep)) { 1609 /* we found a bulk in endpoint */ 1610 if (upriv->read_urb != NULL) { 1611 pr_warn("Found a second bulk in ep, ignored\n"); 1612 continue; 1613 } 1614 1615 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1616 if (!upriv->read_urb) { 1617 err("No free urbs available"); 1618 goto error; 1619 } 1620 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1621 pr_warn("bulk in: wMaxPacketSize!= 64\n"); 1622 if (ep->bEndpointAddress != (2 | USB_DIR_IN)) 1623 pr_warn("bulk in: bEndpointAddress: %d\n", 1624 ep->bEndpointAddress); 1625 upriv->read_pipe = usb_rcvbulkpipe(udev, 1626 ep-> 1627 bEndpointAddress); 1628 upriv->read_urb->transfer_buffer = 1629 kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1630 if (!upriv->read_urb->transfer_buffer) { 1631 err("Couldn't allocate IN buffer"); 1632 goto error; 1633 } 1634 } 1635 1636 if (usb_endpoint_is_bulk_out(ep)) { 1637 /* we found a bulk out endpoint */ 1638 if (upriv->bap_buf != NULL) { 1639 pr_warn("Found a second bulk out ep, ignored\n"); 1640 continue; 1641 } 1642 1643 if (le16_to_cpu(ep->wMaxPacketSize) != 64) 1644 pr_warn("bulk out: wMaxPacketSize != 64\n"); 1645 if (ep->bEndpointAddress != 2) 1646 pr_warn("bulk out: bEndpointAddress: %d\n", 1647 ep->bEndpointAddress); 1648 upriv->write_pipe = usb_sndbulkpipe(udev, 1649 ep-> 1650 bEndpointAddress); 1651 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); 1652 if (!upriv->bap_buf) { 1653 err("Couldn't allocate bulk_out_buffer"); 1654 goto error; 1655 } 1656 } 1657 } 1658 if (!upriv->bap_buf || !upriv->read_urb) { 1659 err("Didn't find the required bulk endpoints"); 1660 goto error; 1661 } 1662 1663 if (request_firmware(&fw_entry, "orinoco_ezusb_fw", 1664 &interface->dev) == 0) { 1665 firmware.size = fw_entry->size; 1666 firmware.code = fw_entry->data; 1667 } 1668 if (firmware.size && firmware.code) { 1669 if (ezusb_firmware_download(upriv, &firmware) < 0) 1670 goto error; 1671 } else { 1672 err("No firmware to download"); 1673 goto error; 1674 } 1675 1676 if (ezusb_hard_reset(priv) < 0) { 1677 err("Cannot reset the device"); 1678 goto error; 1679 } 1680 1681 /* If the firmware is already downloaded orinoco.c will call 1682 * ezusb_init but if the firmware is not already there, that will make 1683 * the kernel very unstable, so we try initializing here and quit in 1684 * case of error */ 1685 if (ezusb_init(hw) < 0) { 1686 err("Couldn't initialize the device"); 1687 err("Firmware may not be downloaded or may be wrong."); 1688 goto error; 1689 } 1690 1691 /* Initialise the main driver */ 1692 if (orinoco_init(priv) != 0) { 1693 err("orinoco_init() failed\n"); 1694 goto error; 1695 } 1696 1697 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { 1698 upriv->dev = NULL; 1699 err("%s: orinoco_if_add() failed", __func__); 1700 wiphy_unregister(priv_to_wiphy(priv)); 1701 goto error; 1702 } 1703 upriv->dev = priv->ndev; 1704 1705 goto exit; 1706 1707 error: 1708 ezusb_delete(upriv); 1709 if (upriv->dev) { 1710 /* upriv->dev was 0, so ezusb_delete() didn't free it */ 1711 free_orinocodev(priv); 1712 } 1713 upriv = NULL; 1714 retval = -EFAULT; 1715 exit: 1716 if (fw_entry) { 1717 firmware.code = NULL; 1718 firmware.size = 0; 1719 release_firmware(fw_entry); 1720 } 1721 usb_set_intfdata(interface, upriv); 1722 return retval; 1723 } 1724 1725 1726 static void ezusb_disconnect(struct usb_interface *intf) 1727 { 1728 struct ezusb_priv *upriv = usb_get_intfdata(intf); 1729 usb_set_intfdata(intf, NULL); 1730 ezusb_delete(upriv); 1731 printk(KERN_INFO PFX "Disconnected\n"); 1732 } 1733 1734 1735 /* usb specific object needed to register this driver with the usb subsystem */ 1736 static struct usb_driver orinoco_driver = { 1737 .name = DRIVER_NAME, 1738 .probe = ezusb_probe, 1739 .disconnect = ezusb_disconnect, 1740 .id_table = ezusb_table, 1741 .disable_hub_initiated_lpm = 1, 1742 }; 1743 1744 module_usb_driver(orinoco_driver); 1745 1746 MODULE_AUTHOR("Manuel Estrada Sainz"); 1747 MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); 1748 MODULE_LICENSE("Dual MPL/GPL"); 1749