1/* 2 * Host AP (software wireless LAN access point) driver for 3 * Intersil Prism2/2.5/3. 4 * 5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 6 * <j@w1.fi> 7 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. See README and COPYING for 12 * more details. 13 * 14 * FIX: 15 * - there is currently no way of associating TX packets to correct wds device 16 * when TX Exc/OK event occurs, so all tx_packets and some 17 * tx_errors/tx_dropped are added to the main netdevice; using sw_support 18 * field in txdesc might be used to fix this (using Alloc event to increment 19 * tx_packets would need some further info in txfid table) 20 * 21 * Buffer Access Path (BAP) usage: 22 * Prism2 cards have two separate BAPs for accessing the card memory. These 23 * should allow concurrent access to two different frames and the driver 24 * previously used BAP0 for sending data and BAP1 for receiving data. 25 * However, there seems to be number of issues with concurrent access and at 26 * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI 27 * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between 28 * host and card memories. BAP0 accesses are protected with local->baplock 29 * (spin_lock_bh) to prevent concurrent use. 30 */ 31 32 33 34#include <asm/delay.h> 35#include <asm/uaccess.h> 36 37#include <linux/slab.h> 38#include <linux/netdevice.h> 39#include <linux/etherdevice.h> 40#include <linux/proc_fs.h> 41#include <linux/if_arp.h> 42#include <linux/delay.h> 43#include <linux/random.h> 44#include <linux/wait.h> 45#include <linux/sched.h> 46#include <linux/rtnetlink.h> 47#include <linux/wireless.h> 48#include <net/iw_handler.h> 49#include <net/ieee80211.h> 50#include <net/ieee80211_crypt.h> 51#include <asm/irq.h> 52 53#include "hostap_80211.h" 54#include "hostap.h" 55#include "hostap_ap.h" 56 57 58/* #define final_version */ 59 60static int mtu = 1500; 61module_param(mtu, int, 0444); 62MODULE_PARM_DESC(mtu, "Maximum transfer unit"); 63 64static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; 65module_param_array(channel, int, NULL, 0444); 66MODULE_PARM_DESC(channel, "Initial channel"); 67 68static char essid[33] = "test"; 69module_param_string(essid, essid, sizeof(essid), 0444); 70MODULE_PARM_DESC(essid, "Host AP's ESSID"); 71 72static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; 73module_param_array(iw_mode, int, NULL, 0444); 74MODULE_PARM_DESC(iw_mode, "Initial operation mode"); 75 76static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; 77module_param_array(beacon_int, int, NULL, 0444); 78MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); 79 80static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; 81module_param_array(dtim_period, int, NULL, 0444); 82MODULE_PARM_DESC(dtim_period, "DTIM period"); 83 84static char dev_template[16] = "wlan%d"; 85module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); 86MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " 87 "wlan%d)"); 88 89#ifdef final_version 90#define EXTRA_EVENTS_WTERR 0 91#else 92/* check WTERR events (Wait Time-out) in development versions */ 93#define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR 94#endif 95 96/* Events that will be using BAP0 */ 97#define HFA384X_BAP0_EVENTS \ 98 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) 99 100/* event mask, i.e., events that will result in an interrupt */ 101#define HFA384X_EVENT_MASK \ 102 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ 103 HFA384X_EV_CMD | HFA384X_EV_TICK | \ 104 EXTRA_EVENTS_WTERR) 105 106/* Default TX control flags: use 802.11 headers and request interrupt for 107 * failed transmits. Frames that request ACK callback, will add 108 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. 109 */ 110#define HFA384X_TX_CTRL_FLAGS \ 111 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) 112 113 114/* ca. 1 usec */ 115#define HFA384X_CMD_BUSY_TIMEOUT 5000 116#define HFA384X_BAP_BUSY_TIMEOUT 50000 117 118/* ca. 10 usec */ 119#define HFA384X_CMD_COMPL_TIMEOUT 20000 120#define HFA384X_DL_COMPL_TIMEOUT 1000000 121 122/* Wait times for initialization; yield to other processes to avoid busy 123 * waiting for long time. */ 124#define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ 125#define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ 126 127 128static void prism2_hw_reset(struct net_device *dev); 129static void prism2_check_sta_fw_version(local_info_t *local); 130 131#ifdef PRISM2_DOWNLOAD_SUPPORT 132/* hostap_download.c */ 133static int prism2_download_aux_dump(struct net_device *dev, 134 unsigned int addr, int len, u8 *buf); 135static u8 * prism2_read_pda(struct net_device *dev); 136static int prism2_download(local_info_t *local, 137 struct prism2_download_param *param); 138static void prism2_download_free_data(struct prism2_download_data *dl); 139static int prism2_download_volatile(local_info_t *local, 140 struct prism2_download_data *param); 141static int prism2_download_genesis(local_info_t *local, 142 struct prism2_download_data *param); 143static int prism2_get_ram_size(local_info_t *local); 144#endif /* PRISM2_DOWNLOAD_SUPPORT */ 145 146 147 148 149#ifndef final_version 150/* magic value written to SWSUPPORT0 reg. for detecting whether card is still 151 * present */ 152#define HFA384X_MAGIC 0x8A32 153#endif 154 155 156static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) 157{ 158 return HFA384X_INW(reg); 159} 160 161 162static void hfa384x_read_regs(struct net_device *dev, 163 struct hfa384x_regs *regs) 164{ 165 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); 166 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 167 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); 168 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); 169 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); 170} 171 172 173/** 174 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) 175 * @local: pointer to private Host AP driver data 176 * @entry: Prism2 command queue entry to be freed 177 * @del_req: request the entry to be removed 178 * 179 * Internal helper function for freeing Prism2 command queue entries. 180 * Caller must have acquired local->cmdlock before calling this function. 181 */ 182static inline void __hostap_cmd_queue_free(local_info_t *local, 183 struct hostap_cmd_queue *entry, 184 int del_req) 185{ 186 if (del_req) { 187 entry->del_req = 1; 188 if (!list_empty(&entry->list)) { 189 list_del_init(&entry->list); 190 local->cmd_queue_len--; 191 } 192 } 193 194 if (atomic_dec_and_test(&entry->usecnt) && entry->del_req) 195 kfree(entry); 196} 197 198 199/** 200 * hostap_cmd_queue_free - Free Prism2 command queue entry 201 * @local: pointer to private Host AP driver data 202 * @entry: Prism2 command queue entry to be freed 203 * @del_req: request the entry to be removed 204 * 205 * Free a Prism2 command queue entry. 206 */ 207static inline void hostap_cmd_queue_free(local_info_t *local, 208 struct hostap_cmd_queue *entry, 209 int del_req) 210{ 211 unsigned long flags; 212 213 spin_lock_irqsave(&local->cmdlock, flags); 214 __hostap_cmd_queue_free(local, entry, del_req); 215 spin_unlock_irqrestore(&local->cmdlock, flags); 216} 217 218 219/** 220 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries 221 * @local: pointer to private Host AP driver data 222 */ 223static void prism2_clear_cmd_queue(local_info_t *local) 224{ 225 struct list_head *ptr, *n; 226 unsigned long flags; 227 struct hostap_cmd_queue *entry; 228 229 spin_lock_irqsave(&local->cmdlock, flags); 230 list_for_each_safe(ptr, n, &local->cmd_queue) { 231 entry = list_entry(ptr, struct hostap_cmd_queue, list); 232 atomic_inc(&entry->usecnt); 233 printk(KERN_DEBUG "%s: removed pending cmd_queue entry " 234 "(type=%d, cmd=0x%04x, param0=0x%04x)\n", 235 local->dev->name, entry->type, entry->cmd, 236 entry->param0); 237 __hostap_cmd_queue_free(local, entry, 1); 238 } 239 if (local->cmd_queue_len) { 240 /* This should not happen; print debug message and clear 241 * queue length. */ 242 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " 243 "flush\n", local->dev->name, local->cmd_queue_len); 244 local->cmd_queue_len = 0; 245 } 246 spin_unlock_irqrestore(&local->cmdlock, flags); 247} 248 249 250/** 251 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware 252 * @dev: pointer to net_device 253 * @entry: Prism2 command queue entry to be issued 254 */ 255static int hfa384x_cmd_issue(struct net_device *dev, 256 struct hostap_cmd_queue *entry) 257{ 258 struct hostap_interface *iface; 259 local_info_t *local; 260 int tries; 261 u16 reg; 262 unsigned long flags; 263 264 iface = netdev_priv(dev); 265 local = iface->local; 266 267 if (local->func->card_present && !local->func->card_present(local)) 268 return -ENODEV; 269 270 if (entry->issued) { 271 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", 272 dev->name, entry); 273 } 274 275 /* wait until busy bit is clear; this should always be clear since the 276 * commands are serialized */ 277 tries = HFA384X_CMD_BUSY_TIMEOUT; 278 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 279 tries--; 280 udelay(1); 281 } 282#ifndef final_version 283 if (tries != HFA384X_CMD_BUSY_TIMEOUT) { 284 prism2_io_debug_error(dev, 1); 285 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " 286 "for %d usec\n", dev->name, 287 HFA384X_CMD_BUSY_TIMEOUT - tries); 288 } 289#endif 290 if (tries == 0) { 291 reg = HFA384X_INW(HFA384X_CMD_OFF); 292 prism2_io_debug_error(dev, 2); 293 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " 294 "reg=0x%04x\n", dev->name, reg); 295 return -ETIMEDOUT; 296 } 297 298 /* write command */ 299 spin_lock_irqsave(&local->cmdlock, flags); 300 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); 301 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); 302 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); 303 entry->issued = 1; 304 spin_unlock_irqrestore(&local->cmdlock, flags); 305 306 return 0; 307} 308 309 310/** 311 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion 312 * @dev: pointer to net_device 313 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 314 * @param0: value for Param0 register 315 * @param1: value for Param1 register (pointer; %NULL if not used) 316 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed 317 * 318 * Issue given command (possibly after waiting in command queue) and sleep 319 * until the command is completed (or timed out or interrupted). This can be 320 * called only from user process context. 321 */ 322static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, 323 u16 *param1, u16 *resp0) 324{ 325 struct hostap_interface *iface; 326 local_info_t *local; 327 int err, res, issue, issued = 0; 328 unsigned long flags; 329 struct hostap_cmd_queue *entry; 330 DECLARE_WAITQUEUE(wait, current); 331 332 iface = netdev_priv(dev); 333 local = iface->local; 334 335 if (in_interrupt()) { 336 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " 337 "context\n", dev->name); 338 return -1; 339 } 340 341 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { 342 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 343 dev->name); 344 return -1; 345 } 346 347 if (signal_pending(current)) 348 return -EINTR; 349 350 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 351 if (entry == NULL) { 352 printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n", 353 dev->name); 354 return -ENOMEM; 355 } 356 atomic_set(&entry->usecnt, 1); 357 entry->type = CMD_SLEEP; 358 entry->cmd = cmd; 359 entry->param0 = param0; 360 if (param1) 361 entry->param1 = *param1; 362 init_waitqueue_head(&entry->compl); 363 364 /* prepare to wait for command completion event, but do not sleep yet 365 */ 366 add_wait_queue(&entry->compl, &wait); 367 set_current_state(TASK_INTERRUPTIBLE); 368 369 spin_lock_irqsave(&local->cmdlock, flags); 370 issue = list_empty(&local->cmd_queue); 371 if (issue) 372 entry->issuing = 1; 373 list_add_tail(&entry->list, &local->cmd_queue); 374 local->cmd_queue_len++; 375 spin_unlock_irqrestore(&local->cmdlock, flags); 376 377 err = 0; 378 if (!issue) 379 goto wait_completion; 380 381 if (signal_pending(current)) 382 err = -EINTR; 383 384 if (!err) { 385 if (hfa384x_cmd_issue(dev, entry)) 386 err = -ETIMEDOUT; 387 else 388 issued = 1; 389 } 390 391 wait_completion: 392 if (!err && entry->type != CMD_COMPLETED) { 393 /* sleep until command is completed or timed out */ 394 res = schedule_timeout(2 * HZ); 395 } else 396 res = -1; 397 398 if (!err && signal_pending(current)) 399 err = -EINTR; 400 401 if (err && issued) { 402 /* the command was issued, so a CmdCompl event should occur 403 * soon; however, there's a pending signal and 404 * schedule_timeout() would be interrupted; wait a short period 405 * of time to avoid removing entry from the list before 406 * CmdCompl event */ 407 udelay(300); 408 } 409 410 set_current_state(TASK_RUNNING); 411 remove_wait_queue(&entry->compl, &wait); 412 413 /* If entry->list is still in the list, it must be removed 414 * first and in this case prism2_cmd_ev() does not yet have 415 * local reference to it, and the data can be kfree()'d 416 * here. If the command completion event is still generated, 417 * it will be assigned to next (possibly) pending command, but 418 * the driver will reset the card anyway due to timeout 419 * 420 * If the entry is not in the list prism2_cmd_ev() has a local 421 * reference to it, but keeps cmdlock as long as the data is 422 * needed, so the data can be kfree()'d here. */ 423 424 /* FIX: if the entry->list is in the list, it has not been completed 425 * yet, so removing it here is somewhat wrong.. this could cause 426 * references to freed memory and next list_del() causing NULL pointer 427 * dereference.. it would probably be better to leave the entry in the 428 * list and the list should be emptied during hw reset */ 429 430 spin_lock_irqsave(&local->cmdlock, flags); 431 if (!list_empty(&entry->list)) { 432 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " 433 "(entry=%p, type=%d, res=%d)\n", dev->name, entry, 434 entry->type, res); 435 list_del_init(&entry->list); 436 local->cmd_queue_len--; 437 } 438 spin_unlock_irqrestore(&local->cmdlock, flags); 439 440 if (err) { 441 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", 442 dev->name, err); 443 res = err; 444 goto done; 445 } 446 447 if (entry->type != CMD_COMPLETED) { 448 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 449 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " 450 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " 451 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, 452 res, entry, entry->type, entry->cmd, entry->param0, reg, 453 HFA384X_INW(HFA384X_INTEN_OFF)); 454 if (reg & HFA384X_EV_CMD) { 455 /* Command completion event is pending, but the 456 * interrupt was not delivered - probably an issue 457 * with pcmcia-cs configuration. */ 458 printk(KERN_WARNING "%s: interrupt delivery does not " 459 "seem to work\n", dev->name); 460 } 461 prism2_io_debug_error(dev, 3); 462 res = -ETIMEDOUT; 463 goto done; 464 } 465 466 if (resp0 != NULL) 467 *resp0 = entry->resp0; 468#ifndef final_version 469 if (entry->res) { 470 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " 471 "resp0=0x%04x\n", 472 dev->name, cmd, entry->res, entry->resp0); 473 } 474#endif /* final_version */ 475 476 res = entry->res; 477 done: 478 hostap_cmd_queue_free(local, entry, 1); 479 return res; 480} 481 482 483/** 484 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed 485 * @dev: pointer to net_device 486 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 487 * @param0: value for Param0 register 488 * @callback: command completion callback function (%NULL = no callback) 489 * @context: context data to be given to the callback function 490 * 491 * Issue given command (possibly after waiting in command queue) and use 492 * callback function to indicate command completion. This can be called both 493 * from user and interrupt context. The callback function will be called in 494 * hardware IRQ context. It can be %NULL, when no function is called when 495 * command is completed. 496 */ 497static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, 498 void (*callback)(struct net_device *dev, 499 long context, u16 resp0, 500 u16 status), 501 long context) 502{ 503 struct hostap_interface *iface; 504 local_info_t *local; 505 int issue, ret; 506 unsigned long flags; 507 struct hostap_cmd_queue *entry; 508 509 iface = netdev_priv(dev); 510 local = iface->local; 511 512 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { 513 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 514 dev->name); 515 return -1; 516 } 517 518 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 519 if (entry == NULL) { 520 printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc " 521 "failed\n", dev->name); 522 return -ENOMEM; 523 } 524 atomic_set(&entry->usecnt, 1); 525 entry->type = CMD_CALLBACK; 526 entry->cmd = cmd; 527 entry->param0 = param0; 528 entry->callback = callback; 529 entry->context = context; 530 531 spin_lock_irqsave(&local->cmdlock, flags); 532 issue = list_empty(&local->cmd_queue); 533 if (issue) 534 entry->issuing = 1; 535 list_add_tail(&entry->list, &local->cmd_queue); 536 local->cmd_queue_len++; 537 spin_unlock_irqrestore(&local->cmdlock, flags); 538 539 if (issue && hfa384x_cmd_issue(dev, entry)) 540 ret = -ETIMEDOUT; 541 else 542 ret = 0; 543 544 hostap_cmd_queue_free(local, entry, ret); 545 546 return ret; 547} 548 549 550/** 551 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) 552 * @dev: pointer to net_device 553 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 554 * @param0: value for Param0 register 555 * @io_debug_num: I/O debug error number 556 * 557 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). 558 */ 559static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, 560 int io_debug_num) 561{ 562 int tries; 563 u16 reg; 564 565 /* wait until busy bit is clear; this should always be clear since the 566 * commands are serialized */ 567 tries = HFA384X_CMD_BUSY_TIMEOUT; 568 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 569 tries--; 570 udelay(1); 571 } 572 if (tries == 0) { 573 reg = HFA384X_INW(HFA384X_CMD_OFF); 574 prism2_io_debug_error(dev, io_debug_num); 575 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " 576 "reg=0x%04x\n", dev->name, io_debug_num, reg); 577 return -ETIMEDOUT; 578 } 579 580 /* write command */ 581 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); 582 HFA384X_OUTW(cmd, HFA384X_CMD_OFF); 583 584 return 0; 585} 586 587 588/** 589 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion 590 * @dev: pointer to net_device 591 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 592 * @param0: value for Param0 register 593 */ 594static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) 595{ 596 int res, tries; 597 u16 reg; 598 599 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); 600 if (res) 601 return res; 602 603 /* wait for command completion */ 604 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) 605 tries = HFA384X_DL_COMPL_TIMEOUT; 606 else 607 tries = HFA384X_CMD_COMPL_TIMEOUT; 608 609 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 610 tries > 0) { 611 tries--; 612 udelay(10); 613 } 614 if (tries == 0) { 615 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 616 prism2_io_debug_error(dev, 5); 617 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " 618 "reg=0x%04x\n", dev->name, reg); 619 return -ETIMEDOUT; 620 } 621 622 res = (HFA384X_INW(HFA384X_STATUS_OFF) & 623 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | 624 BIT(8))) >> 8; 625#ifndef final_version 626 if (res) { 627 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", 628 dev->name, cmd, res); 629 } 630#endif 631 632 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 633 634 return res; 635} 636 637 638/** 639 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion 640 * @dev: pointer to net_device 641 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 642 * @param0: value for Param0 register 643 */ 644static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, 645 u16 param0) 646{ 647 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); 648} 649 650 651/** 652 * prism2_cmd_ev - Prism2 command completion event handler 653 * @dev: pointer to net_device 654 * 655 * Interrupt handler for command completion events. Called by the main 656 * interrupt handler in hardware IRQ context. Read Resp0 and status registers 657 * from the hardware and ACK the event. Depending on the issued command type 658 * either wake up the sleeping process that is waiting for command completion 659 * or call the callback function. Issue the next command, if one is pending. 660 */ 661static void prism2_cmd_ev(struct net_device *dev) 662{ 663 struct hostap_interface *iface; 664 local_info_t *local; 665 struct hostap_cmd_queue *entry = NULL; 666 667 iface = netdev_priv(dev); 668 local = iface->local; 669 670 spin_lock(&local->cmdlock); 671 if (!list_empty(&local->cmd_queue)) { 672 entry = list_entry(local->cmd_queue.next, 673 struct hostap_cmd_queue, list); 674 atomic_inc(&entry->usecnt); 675 list_del_init(&entry->list); 676 local->cmd_queue_len--; 677 678 if (!entry->issued) { 679 printk(KERN_DEBUG "%s: Command completion event, but " 680 "cmd not issued\n", dev->name); 681 __hostap_cmd_queue_free(local, entry, 1); 682 entry = NULL; 683 } 684 } 685 spin_unlock(&local->cmdlock); 686 687 if (!entry) { 688 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 689 printk(KERN_DEBUG "%s: Command completion event, but no " 690 "pending commands\n", dev->name); 691 return; 692 } 693 694 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); 695 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & 696 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | 697 BIT(9) | BIT(8))) >> 8; 698 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 699 700 /* TODO: rest of the CmdEv handling could be moved to tasklet */ 701 if (entry->type == CMD_SLEEP) { 702 entry->type = CMD_COMPLETED; 703 wake_up_interruptible(&entry->compl); 704 } else if (entry->type == CMD_CALLBACK) { 705 if (entry->callback) 706 entry->callback(dev, entry->context, entry->resp0, 707 entry->res); 708 } else { 709 printk(KERN_DEBUG "%s: Invalid command completion type %d\n", 710 dev->name, entry->type); 711 } 712 hostap_cmd_queue_free(local, entry, 1); 713 714 /* issue next command, if pending */ 715 entry = NULL; 716 spin_lock(&local->cmdlock); 717 if (!list_empty(&local->cmd_queue)) { 718 entry = list_entry(local->cmd_queue.next, 719 struct hostap_cmd_queue, list); 720 if (entry->issuing) { 721 /* hfa384x_cmd() has already started issuing this 722 * command, so do not start here */ 723 entry = NULL; 724 } 725 if (entry) 726 atomic_inc(&entry->usecnt); 727 } 728 spin_unlock(&local->cmdlock); 729 730 if (entry) { 731 /* issue next command; if command issuing fails, remove the 732 * entry from cmd_queue */ 733 int res = hfa384x_cmd_issue(dev, entry); 734 spin_lock(&local->cmdlock); 735 __hostap_cmd_queue_free(local, entry, res); 736 spin_unlock(&local->cmdlock); 737 } 738} 739 740 741static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) 742{ 743 int tries = HFA384X_BAP_BUSY_TIMEOUT; 744 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 745 746 while (res && tries > 0) { 747 tries--; 748 udelay(1); 749 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 750 } 751 return res; 752} 753 754 755/* Offset must be even */ 756static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, 757 int offset) 758{ 759 u16 o_off, s_off; 760 int ret = 0; 761 762 if (offset % 2 || bap > 1) 763 return -EINVAL; 764 765 if (bap == BAP1) { 766 o_off = HFA384X_OFFSET1_OFF; 767 s_off = HFA384X_SELECT1_OFF; 768 } else { 769 o_off = HFA384X_OFFSET0_OFF; 770 s_off = HFA384X_SELECT0_OFF; 771 } 772 773 if (hfa384x_wait_offset(dev, o_off)) { 774 prism2_io_debug_error(dev, 7); 775 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", 776 dev->name); 777 ret = -ETIMEDOUT; 778 goto out; 779 } 780 781 HFA384X_OUTW(id, s_off); 782 HFA384X_OUTW(offset, o_off); 783 784 if (hfa384x_wait_offset(dev, o_off)) { 785 prism2_io_debug_error(dev, 8); 786 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", 787 dev->name); 788 ret = -ETIMEDOUT; 789 goto out; 790 } 791#ifndef final_version 792 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { 793 prism2_io_debug_error(dev, 9); 794 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " 795 "(%d,0x04%x,%d); reg=0x%04x\n", 796 dev->name, bap, id, offset, HFA384X_INW(o_off)); 797 ret = -EINVAL; 798 } 799#endif 800 801 out: 802 return ret; 803} 804 805 806static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, 807 int exact_len) 808{ 809 struct hostap_interface *iface; 810 local_info_t *local; 811 int res, rlen = 0; 812 struct hfa384x_rid_hdr rec; 813 814 iface = netdev_priv(dev); 815 local = iface->local; 816 817 if (local->no_pri) { 818 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " 819 "f/w\n", dev->name, rid, len); 820 return -ENOTTY; /* Well.. not really correct, but return 821 * something unique enough.. */ 822 } 823 824 if ((local->func->card_present && !local->func->card_present(local)) || 825 local->hw_downloading) 826 return -ENODEV; 827 828 res = down_interruptible(&local->rid_bap_sem); 829 if (res) 830 return res; 831 832 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); 833 if (res) { 834 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " 835 "(res=%d, rid=%04x, len=%d)\n", 836 dev->name, res, rid, len); 837 up(&local->rid_bap_sem); 838 return res; 839 } 840 841 spin_lock_bh(&local->baplock); 842 843 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 844 if (!res) 845 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); 846 847 if (le16_to_cpu(rec.len) == 0) { 848 /* RID not available */ 849 res = -ENODATA; 850 } 851 852 rlen = (le16_to_cpu(rec.len) - 1) * 2; 853 if (!res && exact_len && rlen != len) { 854 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " 855 "rid=0x%04x, len=%d (expected %d)\n", 856 dev->name, rid, rlen, len); 857 res = -ENODATA; 858 } 859 860 if (!res) 861 res = hfa384x_from_bap(dev, BAP0, buf, len); 862 863 spin_unlock_bh(&local->baplock); 864 up(&local->rid_bap_sem); 865 866 if (res) { 867 if (res != -ENODATA) 868 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " 869 "len=%d) - failed - res=%d\n", dev->name, rid, 870 len, res); 871 if (res == -ETIMEDOUT) 872 prism2_hw_reset(dev); 873 return res; 874 } 875 876 return rlen; 877} 878 879 880static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) 881{ 882 struct hostap_interface *iface; 883 local_info_t *local; 884 struct hfa384x_rid_hdr rec; 885 int res; 886 887 iface = netdev_priv(dev); 888 local = iface->local; 889 890 if (local->no_pri) { 891 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " 892 "f/w\n", dev->name, rid, len); 893 return -ENOTTY; /* Well.. not really correct, but return 894 * something unique enough.. */ 895 } 896 897 if ((local->func->card_present && !local->func->card_present(local)) || 898 local->hw_downloading) 899 return -ENODEV; 900 901 rec.rid = cpu_to_le16(rid); 902 /* RID len in words and +1 for rec.rid */ 903 rec.len = cpu_to_le16(len / 2 + len % 2 + 1); 904 905 res = down_interruptible(&local->rid_bap_sem); 906 if (res) 907 return res; 908 909 spin_lock_bh(&local->baplock); 910 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 911 if (!res) 912 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); 913 if (!res) 914 res = hfa384x_to_bap(dev, BAP0, buf, len); 915 spin_unlock_bh(&local->baplock); 916 917 if (res) { 918 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " 919 "failed - res=%d\n", dev->name, rid, len, res); 920 up(&local->rid_bap_sem); 921 return res; 922 } 923 924 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); 925 up(&local->rid_bap_sem); 926 927 if (res) { 928 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " 929 "failed (res=%d, rid=%04x, len=%d)\n", 930 dev->name, res, rid, len); 931 932 if (res == -ETIMEDOUT) 933 prism2_hw_reset(dev); 934 } 935 936 return res; 937} 938 939 940static void hfa384x_disable_interrupts(struct net_device *dev) 941{ 942 /* disable interrupts and clear event status */ 943 HFA384X_OUTW(0, HFA384X_INTEN_OFF); 944 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 945} 946 947 948static void hfa384x_enable_interrupts(struct net_device *dev) 949{ 950 /* ack pending events and enable interrupts from selected events */ 951 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 952 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 953} 954 955 956static void hfa384x_events_no_bap0(struct net_device *dev) 957{ 958 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, 959 HFA384X_INTEN_OFF); 960} 961 962 963static void hfa384x_events_all(struct net_device *dev) 964{ 965 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 966} 967 968 969static void hfa384x_events_only_cmd(struct net_device *dev) 970{ 971 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); 972} 973 974 975static u16 hfa384x_allocate_fid(struct net_device *dev, int len) 976{ 977 u16 fid; 978 unsigned long delay; 979 980 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event 981 * below would be handled like CmdCompl event (sleep here, wake up from 982 * interrupt handler */ 983 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { 984 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", 985 dev->name, len); 986 return 0xffff; 987 } 988 989 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; 990 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && 991 time_before(jiffies, delay)) 992 yield(); 993 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { 994 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); 995 return 0xffff; 996 } 997 998 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); 999 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 1000 1001 return fid; 1002} 1003 1004 1005static int prism2_reset_port(struct net_device *dev) 1006{ 1007 struct hostap_interface *iface; 1008 local_info_t *local; 1009 int res; 1010 1011 iface = netdev_priv(dev); 1012 local = iface->local; 1013 1014 if (!local->dev_enabled) 1015 return 0; 1016 1017 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, 1018 NULL, NULL); 1019 if (res) 1020 printk(KERN_DEBUG "%s: reset port failed to disable port\n", 1021 dev->name); 1022 else { 1023 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, 1024 NULL, NULL); 1025 if (res) 1026 printk(KERN_DEBUG "%s: reset port failed to enable " 1027 "port\n", dev->name); 1028 } 1029 1030 /* It looks like at least some STA firmware versions reset 1031 * fragmentation threshold back to 2346 after enable command. Restore 1032 * the configured value, if it differs from this default. */ 1033 if (local->fragm_threshold != 2346 && 1034 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1035 local->fragm_threshold)) { 1036 printk(KERN_DEBUG "%s: failed to restore fragmentation " 1037 "threshold (%d) after Port0 enable\n", 1038 dev->name, local->fragm_threshold); 1039 } 1040 1041 /* Some firmwares lose antenna selection settings on reset */ 1042 (void) hostap_set_antsel(local); 1043 1044 return res; 1045} 1046 1047 1048static int prism2_get_version_info(struct net_device *dev, u16 rid, 1049 const char *txt) 1050{ 1051 struct hfa384x_comp_ident comp; 1052 struct hostap_interface *iface; 1053 local_info_t *local; 1054 1055 iface = netdev_priv(dev); 1056 local = iface->local; 1057 1058 if (local->no_pri) { 1059 /* PRI f/w not yet available - cannot read RIDs */ 1060 return -1; 1061 } 1062 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { 1063 printk(KERN_DEBUG "Could not get RID for component %s\n", txt); 1064 return -1; 1065 } 1066 1067 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, 1068 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), 1069 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); 1070 return 0; 1071} 1072 1073 1074static int prism2_setup_rids(struct net_device *dev) 1075{ 1076 struct hostap_interface *iface; 1077 local_info_t *local; 1078 u16 tmp; 1079 int ret = 0; 1080 1081 iface = netdev_priv(dev); 1082 local = iface->local; 1083 1084 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); 1085 1086 if (!local->fw_ap) { 1087 tmp = hostap_get_porttype(local); 1088 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp); 1089 if (ret) { 1090 printk("%s: Port type setting to %d failed\n", 1091 dev->name, tmp); 1092 goto fail; 1093 } 1094 } 1095 1096 /* Setting SSID to empty string seems to kill the card in Host AP mode 1097 */ 1098 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { 1099 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, 1100 local->essid); 1101 if (ret) { 1102 printk("%s: AP own SSID setting failed\n", dev->name); 1103 goto fail; 1104 } 1105 } 1106 1107 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, 1108 PRISM2_DATA_MAXLEN); 1109 if (ret) { 1110 printk("%s: MAC data length setting to %d failed\n", 1111 dev->name, PRISM2_DATA_MAXLEN); 1112 goto fail; 1113 } 1114 1115 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { 1116 printk("%s: Channel list read failed\n", dev->name); 1117 ret = -EINVAL; 1118 goto fail; 1119 } 1120 local->channel_mask = __le16_to_cpu(tmp); 1121 1122 if (local->channel < 1 || local->channel > 14 || 1123 !(local->channel_mask & (1 << (local->channel - 1)))) { 1124 printk(KERN_WARNING "%s: Channel setting out of range " 1125 "(%d)!\n", dev->name, local->channel); 1126 ret = -EBUSY; 1127 goto fail; 1128 } 1129 1130 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); 1131 if (ret) { 1132 printk("%s: Channel setting to %d failed\n", 1133 dev->name, local->channel); 1134 goto fail; 1135 } 1136 1137 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, 1138 local->beacon_int); 1139 if (ret) { 1140 printk("%s: Beacon interval setting to %d failed\n", 1141 dev->name, local->beacon_int); 1142 /* this may fail with Symbol/Lucent firmware */ 1143 if (ret == -ETIMEDOUT) 1144 goto fail; 1145 } 1146 1147 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, 1148 local->dtim_period); 1149 if (ret) { 1150 printk("%s: DTIM period setting to %d failed\n", 1151 dev->name, local->dtim_period); 1152 /* this may fail with Symbol/Lucent firmware */ 1153 if (ret == -ETIMEDOUT) 1154 goto fail; 1155 } 1156 1157 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, 1158 local->is_promisc); 1159 if (ret) 1160 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", 1161 dev->name, local->is_promisc); 1162 1163 if (!local->fw_ap) { 1164 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, 1165 local->essid); 1166 if (ret) { 1167 printk("%s: Desired SSID setting failed\n", dev->name); 1168 goto fail; 1169 } 1170 } 1171 1172 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and 1173 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic 1174 * rates */ 1175 if (local->tx_rate_control == 0) { 1176 local->tx_rate_control = 1177 HFA384X_RATES_1MBPS | 1178 HFA384X_RATES_2MBPS | 1179 HFA384X_RATES_5MBPS | 1180 HFA384X_RATES_11MBPS; 1181 } 1182 if (local->basic_rates == 0) 1183 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; 1184 1185 if (!local->fw_ap) { 1186 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, 1187 local->tx_rate_control); 1188 if (ret) { 1189 printk("%s: TXRateControl setting to %d failed\n", 1190 dev->name, local->tx_rate_control); 1191 goto fail; 1192 } 1193 1194 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, 1195 local->tx_rate_control); 1196 if (ret) { 1197 printk("%s: cnfSupportedRates setting to %d failed\n", 1198 dev->name, local->tx_rate_control); 1199 } 1200 1201 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, 1202 local->basic_rates); 1203 if (ret) { 1204 printk("%s: cnfBasicRates setting to %d failed\n", 1205 dev->name, local->basic_rates); 1206 } 1207 1208 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); 1209 if (ret) { 1210 printk("%s: Create IBSS setting to 1 failed\n", 1211 dev->name); 1212 } 1213 } 1214 1215 if (local->name_set) 1216 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, 1217 local->name); 1218 1219 if (hostap_set_encryption(local)) { 1220 printk(KERN_INFO "%s: could not configure encryption\n", 1221 dev->name); 1222 } 1223 1224 (void) hostap_set_antsel(local); 1225 1226 if (hostap_set_roaming(local)) { 1227 printk(KERN_INFO "%s: could not set host roaming\n", 1228 dev->name); 1229 } 1230 1231 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && 1232 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) 1233 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", 1234 dev->name, local->enh_sec); 1235 1236 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently 1237 * not working correctly (last seven counters report bogus values). 1238 * This has been fixed in 0.8.2, so enable 32-bit tallies only 1239 * beginning with that firmware version. Another bug fix for 32-bit 1240 * tallies in 1.4.0; should 16-bit tallies be used for some other 1241 * versions, too? */ 1242 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { 1243 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { 1244 printk(KERN_INFO "%s: cnfThirty2Tally setting " 1245 "failed\n", dev->name); 1246 local->tallies32 = 0; 1247 } else 1248 local->tallies32 = 1; 1249 } else 1250 local->tallies32 = 0; 1251 1252 hostap_set_auth_algs(local); 1253 1254 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1255 local->fragm_threshold)) { 1256 printk(KERN_INFO "%s: setting FragmentationThreshold to %d " 1257 "failed\n", dev->name, local->fragm_threshold); 1258 } 1259 1260 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, 1261 local->rts_threshold)) { 1262 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", 1263 dev->name, local->rts_threshold); 1264 } 1265 1266 if (local->manual_retry_count >= 0 && 1267 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, 1268 local->manual_retry_count)) { 1269 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", 1270 dev->name, local->manual_retry_count); 1271 } 1272 1273 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && 1274 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { 1275 local->rssi_to_dBm = le16_to_cpu(tmp); 1276 } 1277 1278 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && 1279 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { 1280 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", 1281 dev->name); 1282 } 1283 1284 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && 1285 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, 1286 local->generic_elem, local->generic_elem_len)) { 1287 printk(KERN_INFO "%s: setting genericElement failed\n", 1288 dev->name); 1289 } 1290 1291 fail: 1292 return ret; 1293} 1294 1295 1296static int prism2_hw_init(struct net_device *dev, int initial) 1297{ 1298 struct hostap_interface *iface; 1299 local_info_t *local; 1300 int ret, first = 1; 1301 unsigned long start, delay; 1302 1303 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); 1304 1305 iface = netdev_priv(dev); 1306 local = iface->local; 1307 1308 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); 1309 1310 init: 1311 /* initialize HFA 384x */ 1312 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); 1313 if (ret) { 1314 printk(KERN_INFO "%s: first command failed - assuming card " 1315 "does not have primary firmware\n", dev_info); 1316 } 1317 1318 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1319 /* EvStat has Cmd bit set in some cases, so retry once if no 1320 * wait was needed */ 1321 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1322 printk(KERN_DEBUG "%s: init command completed too quickly - " 1323 "retrying\n", dev->name); 1324 first = 0; 1325 goto init; 1326 } 1327 1328 start = jiffies; 1329 delay = jiffies + HFA384X_INIT_TIMEOUT; 1330 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 1331 time_before(jiffies, delay)) 1332 yield(); 1333 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1334 printk(KERN_DEBUG "%s: assuming no Primary image in " 1335 "flash - card initialization not completed\n", 1336 dev_info); 1337 local->no_pri = 1; 1338#ifdef PRISM2_DOWNLOAD_SUPPORT 1339 if (local->sram_type == -1) 1340 local->sram_type = prism2_get_ram_size(local); 1341#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1342 return 1; 1343 } 1344 local->no_pri = 0; 1345 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", 1346 (jiffies - start) * 1000 / HZ); 1347 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1348 return 0; 1349} 1350 1351 1352static int prism2_hw_init2(struct net_device *dev, int initial) 1353{ 1354 struct hostap_interface *iface; 1355 local_info_t *local; 1356 int i; 1357 1358 iface = netdev_priv(dev); 1359 local = iface->local; 1360 1361#ifdef PRISM2_DOWNLOAD_SUPPORT 1362 kfree(local->pda); 1363 if (local->no_pri) 1364 local->pda = NULL; 1365 else 1366 local->pda = prism2_read_pda(dev); 1367#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1368 1369 hfa384x_disable_interrupts(dev); 1370 1371#ifndef final_version 1372 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); 1373 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 1374 printk("SWSUPPORT0 write/read failed: %04X != %04X\n", 1375 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); 1376 goto failed; 1377 } 1378#endif 1379 1380 if (initial || local->pri_only) { 1381 hfa384x_events_only_cmd(dev); 1382 /* get card version information */ 1383 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || 1384 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { 1385 hfa384x_disable_interrupts(dev); 1386 goto failed; 1387 } 1388 1389 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { 1390 printk(KERN_DEBUG "%s: Failed to read STA f/w version " 1391 "- only Primary f/w present\n", dev->name); 1392 local->pri_only = 1; 1393 return 0; 1394 } 1395 local->pri_only = 0; 1396 hfa384x_disable_interrupts(dev); 1397 } 1398 1399 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and 1400 * enable interrupts before this. This would also require some sort of 1401 * sleeping AllocEv waiting */ 1402 1403 /* allocate TX FIDs */ 1404 local->txfid_len = PRISM2_TXFID_LEN; 1405 for (i = 0; i < PRISM2_TXFID_COUNT; i++) { 1406 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); 1407 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { 1408 local->txfid[i] = hfa384x_allocate_fid(dev, 1600); 1409 if (local->txfid[i] != 0xffff) { 1410 printk(KERN_DEBUG "%s: Using shorter TX FID " 1411 "(1600 bytes)\n", dev->name); 1412 local->txfid_len = 1600; 1413 } 1414 } 1415 if (local->txfid[i] == 0xffff) 1416 goto failed; 1417 local->intransmitfid[i] = PRISM2_TXFID_EMPTY; 1418 } 1419 1420 hfa384x_events_only_cmd(dev); 1421 1422 if (initial) { 1423 struct list_head *ptr; 1424 prism2_check_sta_fw_version(local); 1425 1426 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, 1427 &dev->dev_addr, 6, 1) < 0) { 1428 printk("%s: could not get own MAC address\n", 1429 dev->name); 1430 } 1431 list_for_each(ptr, &local->hostap_interfaces) { 1432 iface = list_entry(ptr, struct hostap_interface, list); 1433 memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN); 1434 } 1435 } else if (local->fw_ap) 1436 prism2_check_sta_fw_version(local); 1437 1438 prism2_setup_rids(dev); 1439 1440 /* MAC is now configured, but port 0 is not yet enabled */ 1441 return 0; 1442 1443 failed: 1444 if (!local->no_pri) 1445 printk(KERN_WARNING "%s: Initialization failed\n", dev_info); 1446 return 1; 1447} 1448 1449 1450static int prism2_hw_enable(struct net_device *dev, int initial) 1451{ 1452 struct hostap_interface *iface; 1453 local_info_t *local; 1454 int was_resetting; 1455 1456 iface = netdev_priv(dev); 1457 local = iface->local; 1458 was_resetting = local->hw_resetting; 1459 1460 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { 1461 printk("%s: MAC port 0 enabling failed\n", dev->name); 1462 return 1; 1463 } 1464 1465 local->hw_ready = 1; 1466 local->hw_reset_tries = 0; 1467 local->hw_resetting = 0; 1468 hfa384x_enable_interrupts(dev); 1469 1470 /* at least D-Link DWL-650 seems to require additional port reset 1471 * before it starts acting as an AP, so reset port automatically 1472 * here just in case */ 1473 if (initial && prism2_reset_port(dev)) { 1474 printk("%s: MAC port 0 reseting failed\n", dev->name); 1475 return 1; 1476 } 1477 1478 if (was_resetting && netif_queue_stopped(dev)) { 1479 /* If hw_reset() was called during pending transmit, netif 1480 * queue was stopped. Wake it up now since the wlan card has 1481 * been resetted. */ 1482 netif_wake_queue(dev); 1483 } 1484 1485 return 0; 1486} 1487 1488 1489static int prism2_hw_config(struct net_device *dev, int initial) 1490{ 1491 struct hostap_interface *iface; 1492 local_info_t *local; 1493 1494 iface = netdev_priv(dev); 1495 local = iface->local; 1496 1497 if (local->hw_downloading) 1498 return 1; 1499 1500 if (prism2_hw_init(dev, initial)) { 1501 return local->no_pri ? 0 : 1; 1502 } 1503 1504 if (prism2_hw_init2(dev, initial)) 1505 return 1; 1506 1507 /* Enable firmware if secondary image is loaded and at least one of the 1508 * netdevices is up. */ 1509 if (!local->pri_only && 1510 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { 1511 if (!local->dev_enabled) 1512 prism2_callback(local, PRISM2_CALLBACK_ENABLE); 1513 local->dev_enabled = 1; 1514 return prism2_hw_enable(dev, initial); 1515 } 1516 1517 return 0; 1518} 1519 1520 1521static void prism2_hw_shutdown(struct net_device *dev, int no_disable) 1522{ 1523 struct hostap_interface *iface; 1524 local_info_t *local; 1525 1526 iface = netdev_priv(dev); 1527 local = iface->local; 1528 1529 /* Allow only command completion events during disable */ 1530 hfa384x_events_only_cmd(dev); 1531 1532 local->hw_ready = 0; 1533 if (local->dev_enabled) 1534 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 1535 local->dev_enabled = 0; 1536 1537 if (local->func->card_present && !local->func->card_present(local)) { 1538 printk(KERN_DEBUG "%s: card already removed or not configured " 1539 "during shutdown\n", dev->name); 1540 return; 1541 } 1542 1543 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && 1544 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) 1545 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); 1546 1547 hfa384x_disable_interrupts(dev); 1548 1549 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) 1550 hfa384x_events_only_cmd(dev); 1551 else 1552 prism2_clear_cmd_queue(local); 1553} 1554 1555 1556static void prism2_hw_reset(struct net_device *dev) 1557{ 1558 struct hostap_interface *iface; 1559 local_info_t *local; 1560 1561 1562 iface = netdev_priv(dev); 1563 local = iface->local; 1564 1565 if (in_interrupt()) { 1566 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " 1567 "in interrupt context\n", dev->name); 1568 return; 1569 } 1570 1571 if (local->hw_downloading) 1572 return; 1573 1574 if (local->hw_resetting) { 1575 printk(KERN_WARNING "%s: %s: already resetting card - " 1576 "ignoring reset request\n", dev_info, dev->name); 1577 return; 1578 } 1579 1580 local->hw_reset_tries++; 1581 if (local->hw_reset_tries > 10) { 1582 printk(KERN_WARNING "%s: too many reset tries, skipping\n", 1583 dev->name); 1584 return; 1585 } 1586 1587 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); 1588 hfa384x_disable_interrupts(dev); 1589 local->hw_resetting = 1; 1590 if (local->func->cor_sreset) { 1591 /* Host system seems to hang in some cases with high traffic 1592 * load or shared interrupts during COR sreset. Disable shared 1593 * interrupts during reset to avoid these crashes. COS sreset 1594 * takes quite a long time, so it is unfortunate that this 1595 * seems to be needed. Anyway, I do not know of any better way 1596 * of avoiding the crash. */ 1597 disable_irq(dev->irq); 1598 local->func->cor_sreset(local); 1599 enable_irq(dev->irq); 1600 } 1601 prism2_hw_shutdown(dev, 1); 1602 prism2_hw_config(dev, 0); 1603 local->hw_resetting = 0; 1604 1605#ifdef PRISM2_DOWNLOAD_SUPPORT 1606 if (local->dl_pri) { 1607 printk(KERN_DEBUG "%s: persistent download of primary " 1608 "firmware\n", dev->name); 1609 if (prism2_download_genesis(local, local->dl_pri) < 0) 1610 printk(KERN_WARNING "%s: download (PRI) failed\n", 1611 dev->name); 1612 } 1613 1614 if (local->dl_sec) { 1615 printk(KERN_DEBUG "%s: persistent download of secondary " 1616 "firmware\n", dev->name); 1617 if (prism2_download_volatile(local, local->dl_sec) < 0) 1618 printk(KERN_WARNING "%s: download (SEC) failed\n", 1619 dev->name); 1620 } 1621#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1622 1623 /* TODO: restore beacon TIM bits for STAs that have buffered frames */ 1624} 1625 1626 1627static void prism2_schedule_reset(local_info_t *local) 1628{ 1629 schedule_work(&local->reset_queue); 1630} 1631 1632 1633/* Called only as scheduled task after noticing card timeout in interrupt 1634 * context */ 1635static void handle_reset_queue(struct work_struct *work) 1636{ 1637 local_info_t *local = container_of(work, local_info_t, reset_queue); 1638 1639 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); 1640 prism2_hw_reset(local->dev); 1641 1642 if (netif_queue_stopped(local->dev)) { 1643 int i; 1644 1645 for (i = 0; i < PRISM2_TXFID_COUNT; i++) 1646 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { 1647 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " 1648 "wake up queue\n"); 1649 netif_wake_queue(local->dev); 1650 break; 1651 } 1652 } 1653} 1654 1655 1656static int prism2_get_txfid_idx(local_info_t *local) 1657{ 1658 int idx, end; 1659 unsigned long flags; 1660 1661 spin_lock_irqsave(&local->txfidlock, flags); 1662 end = idx = local->next_txfid; 1663 do { 1664 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1665 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; 1666 spin_unlock_irqrestore(&local->txfidlock, flags); 1667 return idx; 1668 } 1669 idx++; 1670 if (idx >= PRISM2_TXFID_COUNT) 1671 idx = 0; 1672 } while (idx != end); 1673 spin_unlock_irqrestore(&local->txfidlock, flags); 1674 1675 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " 1676 "packet dropped\n"); 1677 local->stats.tx_dropped++; 1678 1679 return -1; 1680} 1681 1682 1683/* Called only from hardware IRQ */ 1684static void prism2_transmit_cb(struct net_device *dev, long context, 1685 u16 resp0, u16 res) 1686{ 1687 struct hostap_interface *iface; 1688 local_info_t *local; 1689 int idx = (int) context; 1690 1691 iface = netdev_priv(dev); 1692 local = iface->local; 1693 1694 if (res) { 1695 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", 1696 dev->name, res); 1697 return; 1698 } 1699 1700 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { 1701 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " 1702 "idx=%d\n", dev->name, idx); 1703 return; 1704 } 1705 1706 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1707 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " 1708 "with no pending transmit\n", dev->name); 1709 } 1710 1711 if (netif_queue_stopped(dev)) { 1712 /* ready for next TX, so wake up queue that was stopped in 1713 * prism2_transmit() */ 1714 netif_wake_queue(dev); 1715 } 1716 1717 spin_lock(&local->txfidlock); 1718 1719 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid 1720 * will be automatically allocated for the next TX frame */ 1721 local->intransmitfid[idx] = resp0; 1722 1723 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " 1724 "resp0=0x%04x, transmit_txfid=0x%04x\n", 1725 dev->name, idx, local->txfid[idx], 1726 resp0, local->intransmitfid[local->next_txfid]); 1727 1728 idx++; 1729 if (idx >= PRISM2_TXFID_COUNT) 1730 idx = 0; 1731 local->next_txfid = idx; 1732 1733 /* check if all TX buffers are occupied */ 1734 do { 1735 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1736 spin_unlock(&local->txfidlock); 1737 return; 1738 } 1739 idx++; 1740 if (idx >= PRISM2_TXFID_COUNT) 1741 idx = 0; 1742 } while (idx != local->next_txfid); 1743 spin_unlock(&local->txfidlock); 1744 1745 /* no empty TX buffers, stop queue */ 1746 netif_stop_queue(dev); 1747} 1748 1749 1750/* Called only from software IRQ if PCI bus master is not used (with bus master 1751 * this can be called both from software and hardware IRQ) */ 1752static int prism2_transmit(struct net_device *dev, int idx) 1753{ 1754 struct hostap_interface *iface; 1755 local_info_t *local; 1756 int res; 1757 1758 iface = netdev_priv(dev); 1759 local = iface->local; 1760 1761 /* The driver tries to stop netif queue so that there would not be 1762 * more than one attempt to transmit frames going on; check that this 1763 * is really the case */ 1764 1765 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1766 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " 1767 "when previous TX was pending\n", dev->name); 1768 return -1; 1769 } 1770 1771 /* stop the queue for the time that transmit is pending */ 1772 netif_stop_queue(dev); 1773 1774 /* transmit packet */ 1775 res = hfa384x_cmd_callback( 1776 dev, 1777 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, 1778 local->txfid[idx], 1779 prism2_transmit_cb, (long) idx); 1780 1781 if (res) { 1782 struct net_device_stats *stats; 1783 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " 1784 "failed (res=%d)\n", dev->name, res); 1785 stats = hostap_get_stats(dev); 1786 stats->tx_dropped++; 1787 netif_wake_queue(dev); 1788 return -1; 1789 } 1790 dev->trans_start = jiffies; 1791 1792 /* Since we did not wait for command completion, the card continues 1793 * to process on the background and we will finish handling when 1794 * command completion event is handled (prism2_cmd_ev() function) */ 1795 1796 return 0; 1797} 1798 1799 1800/* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and 1801 * send the payload with this descriptor) */ 1802/* Called only from software IRQ */ 1803static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) 1804{ 1805 struct hostap_interface *iface; 1806 local_info_t *local; 1807 struct hfa384x_tx_frame txdesc; 1808 struct hostap_skb_tx_data *meta; 1809 int hdr_len, data_len, idx, res, ret = -1; 1810 u16 tx_control, fc; 1811 1812 iface = netdev_priv(dev); 1813 local = iface->local; 1814 1815 meta = (struct hostap_skb_tx_data *) skb->cb; 1816 1817 prism2_callback(local, PRISM2_CALLBACK_TX_START); 1818 1819 if ((local->func->card_present && !local->func->card_present(local)) || 1820 !local->hw_ready || local->hw_downloading || local->pri_only) { 1821 if (net_ratelimit()) { 1822 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" 1823 " skipping\n", dev->name); 1824 } 1825 goto fail; 1826 } 1827 1828 memset(&txdesc, 0, sizeof(txdesc)); 1829 1830 /* skb->data starts with txdesc->frame_control */ 1831 hdr_len = 24; 1832 skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len); 1833 fc = le16_to_cpu(txdesc.frame_control); 1834 if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA && 1835 (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS) && 1836 skb->len >= 30) { 1837 /* Addr4 */ 1838 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, 1839 ETH_ALEN); 1840 hdr_len += ETH_ALEN; 1841 } 1842 1843 tx_control = local->tx_control; 1844 if (meta->tx_cb_idx) { 1845 tx_control |= HFA384X_TX_CTRL_TX_OK; 1846 txdesc.sw_support = cpu_to_le16(meta->tx_cb_idx); 1847 } 1848 txdesc.tx_control = cpu_to_le16(tx_control); 1849 txdesc.tx_rate = meta->rate; 1850 1851 data_len = skb->len - hdr_len; 1852 txdesc.data_len = cpu_to_le16(data_len); 1853 txdesc.len = cpu_to_be16(data_len); 1854 1855 idx = prism2_get_txfid_idx(local); 1856 if (idx < 0) 1857 goto fail; 1858 1859 if (local->frame_dump & PRISM2_DUMP_TX_HDR) 1860 hostap_dump_tx_header(dev->name, &txdesc); 1861 1862 spin_lock(&local->baplock); 1863 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); 1864 1865 if (!res) 1866 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); 1867 if (!res) 1868 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, 1869 skb->len - hdr_len); 1870 spin_unlock(&local->baplock); 1871 1872 if (!res) 1873 res = prism2_transmit(dev, idx); 1874 if (res) { 1875 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", 1876 dev->name); 1877 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 1878 schedule_work(&local->reset_queue); 1879 goto fail; 1880 } 1881 1882 ret = 0; 1883 1884fail: 1885 prism2_callback(local, PRISM2_CALLBACK_TX_END); 1886 return ret; 1887} 1888 1889 1890/* Some SMP systems have reported number of odd errors with hostap_pci. fid 1891 * register has changed values between consecutive reads for an unknown reason. 1892 * This should really not happen, so more debugging is needed. This test 1893 * version is a big slower, but it will detect most of such register changes 1894 * and will try to get the correct fid eventually. */ 1895#define EXTRA_FID_READ_TESTS 1896 1897static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) 1898{ 1899#ifdef EXTRA_FID_READ_TESTS 1900 u16 val, val2, val3; 1901 int i; 1902 1903 for (i = 0; i < 10; i++) { 1904 val = HFA384X_INW(reg); 1905 val2 = HFA384X_INW(reg); 1906 val3 = HFA384X_INW(reg); 1907 1908 if (val == val2 && val == val3) 1909 return val; 1910 1911 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" 1912 " %04x %04x %04x\n", 1913 dev->name, i, reg, val, val2, val3); 1914 if ((val == val2 || val == val3) && val != 0) 1915 return val; 1916 if (val2 == val3 && val2 != 0) 1917 return val2; 1918 } 1919 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " 1920 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); 1921 return val; 1922#else /* EXTRA_FID_READ_TESTS */ 1923 return HFA384X_INW(reg); 1924#endif /* EXTRA_FID_READ_TESTS */ 1925} 1926 1927 1928/* Called only as a tasklet (software IRQ) */ 1929static void prism2_rx(local_info_t *local) 1930{ 1931 struct net_device *dev = local->dev; 1932 int res, rx_pending = 0; 1933 u16 len, hdr_len, rxfid, status, macport; 1934 struct net_device_stats *stats; 1935 struct hfa384x_rx_frame rxdesc; 1936 struct sk_buff *skb = NULL; 1937 1938 prism2_callback(local, PRISM2_CALLBACK_RX_START); 1939 stats = hostap_get_stats(dev); 1940 1941 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); 1942#ifndef final_version 1943 if (rxfid == 0) { 1944 rxfid = HFA384X_INW(HFA384X_RXFID_OFF); 1945 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", 1946 rxfid); 1947 if (rxfid == 0) { 1948 schedule_work(&local->reset_queue); 1949 goto rx_dropped; 1950 } 1951 /* try to continue with the new rxfid value */ 1952 } 1953#endif 1954 1955 spin_lock(&local->baplock); 1956 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); 1957 if (!res) 1958 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); 1959 1960 if (res) { 1961 spin_unlock(&local->baplock); 1962 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, 1963 res); 1964 if (res == -ETIMEDOUT) { 1965 schedule_work(&local->reset_queue); 1966 } 1967 goto rx_dropped; 1968 } 1969 1970 len = le16_to_cpu(rxdesc.data_len); 1971 hdr_len = sizeof(rxdesc); 1972 status = le16_to_cpu(rxdesc.status); 1973 macport = (status >> 8) & 0x07; 1974 1975 /* Drop frames with too large reported payload length. Monitor mode 1976 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and 1977 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for 1978 * macport 7 */ 1979 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { 1980 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { 1981 if (len >= (u16) -14) { 1982 hdr_len -= 65535 - len; 1983 hdr_len--; 1984 } 1985 len = 0; 1986 } else { 1987 spin_unlock(&local->baplock); 1988 printk(KERN_DEBUG "%s: Received frame with invalid " 1989 "length 0x%04x\n", dev->name, len); 1990 hostap_dump_rx_header(dev->name, &rxdesc); 1991 goto rx_dropped; 1992 } 1993 } 1994 1995 skb = dev_alloc_skb(len + hdr_len); 1996 if (!skb) { 1997 spin_unlock(&local->baplock); 1998 printk(KERN_DEBUG "%s: RX failed to allocate skb\n", 1999 dev->name); 2000 goto rx_dropped; 2001 } 2002 skb->dev = dev; 2003 memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len); 2004 2005 if (len > 0) 2006 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); 2007 spin_unlock(&local->baplock); 2008 if (res) { 2009 printk(KERN_DEBUG "%s: RX failed to read " 2010 "frame data\n", dev->name); 2011 goto rx_dropped; 2012 } 2013 2014 skb_queue_tail(&local->rx_list, skb); 2015 tasklet_schedule(&local->rx_tasklet); 2016 2017 rx_exit: 2018 prism2_callback(local, PRISM2_CALLBACK_RX_END); 2019 if (!rx_pending) { 2020 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); 2021 } 2022 2023 return; 2024 2025 rx_dropped: 2026 stats->rx_dropped++; 2027 if (skb) 2028 dev_kfree_skb(skb); 2029 goto rx_exit; 2030} 2031 2032 2033/* Called only as a tasklet (software IRQ) */ 2034static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) 2035{ 2036 struct hfa384x_rx_frame *rxdesc; 2037 struct net_device *dev = skb->dev; 2038 struct hostap_80211_rx_status stats; 2039 int hdrlen, rx_hdrlen; 2040 2041 rx_hdrlen = sizeof(*rxdesc); 2042 if (skb->len < sizeof(*rxdesc)) { 2043 /* Allow monitor mode to receive shorter frames */ 2044 if (local->iw_mode == IW_MODE_MONITOR && 2045 skb->len >= sizeof(*rxdesc) - 30) { 2046 rx_hdrlen = skb->len; 2047 } else { 2048 dev_kfree_skb(skb); 2049 return; 2050 } 2051 } 2052 2053 rxdesc = (struct hfa384x_rx_frame *) skb->data; 2054 2055 if (local->frame_dump & PRISM2_DUMP_RX_HDR && 2056 skb->len >= sizeof(*rxdesc)) 2057 hostap_dump_rx_header(dev->name, rxdesc); 2058 2059 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && 2060 (!local->monitor_allow_fcserr || 2061 local->iw_mode != IW_MODE_MONITOR)) 2062 goto drop; 2063 2064 if (skb->len > PRISM2_DATA_MAXLEN) { 2065 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", 2066 dev->name, skb->len, PRISM2_DATA_MAXLEN); 2067 goto drop; 2068 } 2069 2070 stats.mac_time = le32_to_cpu(rxdesc->time); 2071 stats.signal = rxdesc->signal - local->rssi_to_dBm; 2072 stats.noise = rxdesc->silence - local->rssi_to_dBm; 2073 stats.rate = rxdesc->rate; 2074 2075 /* Convert Prism2 RX structure into IEEE 802.11 header */ 2076 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(rxdesc->frame_control)); 2077 if (hdrlen > rx_hdrlen) 2078 hdrlen = rx_hdrlen; 2079 2080 memmove(skb_pull(skb, rx_hdrlen - hdrlen), 2081 &rxdesc->frame_control, hdrlen); 2082 2083 hostap_80211_rx(dev, skb, &stats); 2084 return; 2085 2086 drop: 2087 dev_kfree_skb(skb); 2088} 2089 2090 2091/* Called only as a tasklet (software IRQ) */ 2092static void hostap_rx_tasklet(unsigned long data) 2093{ 2094 local_info_t *local = (local_info_t *) data; 2095 struct sk_buff *skb; 2096 2097 while ((skb = skb_dequeue(&local->rx_list)) != NULL) 2098 hostap_rx_skb(local, skb); 2099} 2100 2101 2102/* Called only from hardware IRQ */ 2103static void prism2_alloc_ev(struct net_device *dev) 2104{ 2105 struct hostap_interface *iface; 2106 local_info_t *local; 2107 int idx; 2108 u16 fid; 2109 2110 iface = netdev_priv(dev); 2111 local = iface->local; 2112 2113 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); 2114 2115 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); 2116 2117 spin_lock(&local->txfidlock); 2118 idx = local->next_alloc; 2119 2120 do { 2121 if (local->txfid[idx] == fid) { 2122 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", 2123 idx); 2124 2125#ifndef final_version 2126 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) 2127 printk("Already released txfid found at idx " 2128 "%d\n", idx); 2129 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) 2130 printk("Already reserved txfid found at idx " 2131 "%d\n", idx); 2132#endif 2133 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 2134 idx++; 2135 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : 2136 idx; 2137 2138 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && 2139 netif_queue_stopped(dev)) 2140 netif_wake_queue(dev); 2141 2142 spin_unlock(&local->txfidlock); 2143 return; 2144 } 2145 2146 idx++; 2147 if (idx >= PRISM2_TXFID_COUNT) 2148 idx = 0; 2149 } while (idx != local->next_alloc); 2150 2151 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " 2152 "read 0x%04x) for alloc event\n", dev->name, fid, 2153 HFA384X_INW(HFA384X_ALLOCFID_OFF)); 2154 printk(KERN_DEBUG "TXFIDs:"); 2155 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) 2156 printk(" %04x[%04x]", local->txfid[idx], 2157 local->intransmitfid[idx]); 2158 printk("\n"); 2159 spin_unlock(&local->txfidlock); 2160 2161 /* FIX: should probably schedule reset; reference to one txfid was lost 2162 * completely.. Bad things will happen if we run out of txfids 2163 * Actually, this will cause netdev watchdog to notice TX timeout and 2164 * then card reset after all txfids have been leaked. */ 2165} 2166 2167 2168/* Called only as a tasklet (software IRQ) */ 2169static void hostap_tx_callback(local_info_t *local, 2170 struct hfa384x_tx_frame *txdesc, int ok, 2171 char *payload) 2172{ 2173 u16 sw_support, hdrlen, len; 2174 struct sk_buff *skb; 2175 struct hostap_tx_callback_info *cb; 2176 2177 /* Make sure that frame was from us. */ 2178 if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) { 2179 printk(KERN_DEBUG "%s: TX callback - foreign frame\n", 2180 local->dev->name); 2181 return; 2182 } 2183 2184 sw_support = le16_to_cpu(txdesc->sw_support); 2185 2186 spin_lock(&local->lock); 2187 cb = local->tx_callback; 2188 while (cb != NULL && cb->idx != sw_support) 2189 cb = cb->next; 2190 spin_unlock(&local->lock); 2191 2192 if (cb == NULL) { 2193 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", 2194 local->dev->name, sw_support); 2195 return; 2196 } 2197 2198 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(txdesc->frame_control)); 2199 len = le16_to_cpu(txdesc->data_len); 2200 skb = dev_alloc_skb(hdrlen + len); 2201 if (skb == NULL) { 2202 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " 2203 "skb\n", local->dev->name); 2204 return; 2205 } 2206 2207 memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen); 2208 if (payload) 2209 memcpy(skb_put(skb, len), payload, len); 2210 2211 skb->dev = local->dev; 2212 skb_reset_mac_header(skb); 2213 2214 cb->func(skb, ok, cb->data); 2215} 2216 2217 2218/* Called only as a tasklet (software IRQ) */ 2219static int hostap_tx_compl_read(local_info_t *local, int error, 2220 struct hfa384x_tx_frame *txdesc, 2221 char **payload) 2222{ 2223 u16 fid, len; 2224 int res, ret = 0; 2225 struct net_device *dev = local->dev; 2226 2227 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); 2228 2229 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); 2230 2231 spin_lock(&local->baplock); 2232 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2233 if (!res) 2234 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); 2235 if (res) { 2236 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " 2237 "read txdesc\n", dev->name, error, fid); 2238 if (res == -ETIMEDOUT) { 2239 schedule_work(&local->reset_queue); 2240 } 2241 ret = -1; 2242 goto fail; 2243 } 2244 if (txdesc->sw_support) { 2245 len = le16_to_cpu(txdesc->data_len); 2246 if (len < PRISM2_DATA_MAXLEN) { 2247 *payload = kmalloc(len, GFP_ATOMIC); 2248 if (*payload == NULL || 2249 hfa384x_from_bap(dev, BAP0, *payload, len)) { 2250 PDEBUG(DEBUG_EXTRA, "%s: could not read TX " 2251 "frame payload\n", dev->name); 2252 kfree(*payload); 2253 *payload = NULL; 2254 ret = -1; 2255 goto fail; 2256 } 2257 } 2258 } 2259 2260 fail: 2261 spin_unlock(&local->baplock); 2262 2263 return ret; 2264} 2265 2266 2267/* Called only as a tasklet (software IRQ) */ 2268static void prism2_tx_ev(local_info_t *local) 2269{ 2270 struct net_device *dev = local->dev; 2271 char *payload = NULL; 2272 struct hfa384x_tx_frame txdesc; 2273 2274 if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) 2275 goto fail; 2276 2277 if (local->frame_dump & PRISM2_DUMP_TX_HDR) { 2278 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " 2279 "retry_count=%d tx_rate=%d seq_ctrl=%d " 2280 "duration_id=%d\n", 2281 dev->name, le16_to_cpu(txdesc.status), 2282 txdesc.retry_count, txdesc.tx_rate, 2283 le16_to_cpu(txdesc.seq_ctrl), 2284 le16_to_cpu(txdesc.duration_id)); 2285 } 2286 2287 if (txdesc.sw_support) 2288 hostap_tx_callback(local, &txdesc, 1, payload); 2289 kfree(payload); 2290 2291 fail: 2292 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); 2293} 2294 2295 2296/* Called only as a tasklet (software IRQ) */ 2297static void hostap_sta_tx_exc_tasklet(unsigned long data) 2298{ 2299 local_info_t *local = (local_info_t *) data; 2300 struct sk_buff *skb; 2301 2302 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { 2303 struct hfa384x_tx_frame *txdesc = 2304 (struct hfa384x_tx_frame *) skb->data; 2305 2306 if (skb->len >= sizeof(*txdesc)) { 2307 /* Convert Prism2 RX structure into IEEE 802.11 header 2308 */ 2309 u16 fc = le16_to_cpu(txdesc->frame_control); 2310 int hdrlen = hostap_80211_get_hdrlen(fc); 2311 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), 2312 &txdesc->frame_control, hdrlen); 2313 2314 hostap_handle_sta_tx_exc(local, skb); 2315 } 2316 dev_kfree_skb(skb); 2317 } 2318} 2319 2320 2321/* Called only as a tasklet (software IRQ) */ 2322static void prism2_txexc(local_info_t *local) 2323{ 2324 struct net_device *dev = local->dev; 2325 u16 status, fc; 2326 int show_dump, res; 2327 char *payload = NULL; 2328 struct hfa384x_tx_frame txdesc; 2329 2330 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; 2331 local->stats.tx_errors++; 2332 2333 res = hostap_tx_compl_read(local, 1, &txdesc, &payload); 2334 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); 2335 if (res) 2336 return; 2337 2338 status = le16_to_cpu(txdesc.status); 2339 2340 /* We produce a TXDROP event only for retry or lifetime 2341 * exceeded, because that's the only status that really mean 2342 * that this particular node went away. 2343 * Other errors means that *we* screwed up. - Jean II */ 2344 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) 2345 { 2346 union iwreq_data wrqu; 2347 2348 /* Copy 802.11 dest address. */ 2349 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); 2350 wrqu.addr.sa_family = ARPHRD_ETHER; 2351 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); 2352 } else 2353 show_dump = 1; 2354 2355 if (local->iw_mode == IW_MODE_MASTER || 2356 local->iw_mode == IW_MODE_REPEAT || 2357 local->wds_type & HOSTAP_WDS_AP_CLIENT) { 2358 struct sk_buff *skb; 2359 skb = dev_alloc_skb(sizeof(txdesc)); 2360 if (skb) { 2361 memcpy(skb_put(skb, sizeof(txdesc)), &txdesc, 2362 sizeof(txdesc)); 2363 skb_queue_tail(&local->sta_tx_exc_list, skb); 2364 tasklet_schedule(&local->sta_tx_exc_tasklet); 2365 } 2366 } 2367 2368 if (txdesc.sw_support) 2369 hostap_tx_callback(local, &txdesc, 0, payload); 2370 kfree(payload); 2371 2372 if (!show_dump) 2373 return; 2374 2375 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" 2376 " tx_control=%04x\n", 2377 dev->name, status, 2378 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", 2379 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", 2380 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", 2381 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", 2382 le16_to_cpu(txdesc.tx_control)); 2383 2384 fc = le16_to_cpu(txdesc.frame_control); 2385 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " 2386 "(%s%s%s::%d%s%s)\n", 2387 txdesc.retry_count, txdesc.tx_rate, fc, 2388 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT ? "Mgmt" : "", 2389 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL ? "Ctrl" : "", 2390 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA ? "Data" : "", 2391 WLAN_FC_GET_STYPE(fc) >> 4, 2392 fc & IEEE80211_FCTL_TODS ? " ToDS" : "", 2393 fc & IEEE80211_FCTL_FROMDS ? " FromDS" : ""); 2394 PDEBUG(DEBUG_EXTRA, " A1=" MACSTR " A2=" MACSTR " A3=" 2395 MACSTR " A4=" MACSTR "\n", 2396 MAC2STR(txdesc.addr1), MAC2STR(txdesc.addr2), 2397 MAC2STR(txdesc.addr3), MAC2STR(txdesc.addr4)); 2398} 2399 2400 2401/* Called only as a tasklet (software IRQ) */ 2402static void hostap_info_tasklet(unsigned long data) 2403{ 2404 local_info_t *local = (local_info_t *) data; 2405 struct sk_buff *skb; 2406 2407 while ((skb = skb_dequeue(&local->info_list)) != NULL) { 2408 hostap_info_process(local, skb); 2409 dev_kfree_skb(skb); 2410 } 2411} 2412 2413 2414/* Called only as a tasklet (software IRQ) */ 2415static void prism2_info(local_info_t *local) 2416{ 2417 struct net_device *dev = local->dev; 2418 u16 fid; 2419 int res, left; 2420 struct hfa384x_info_frame info; 2421 struct sk_buff *skb; 2422 2423 fid = HFA384X_INW(HFA384X_INFOFID_OFF); 2424 2425 spin_lock(&local->baplock); 2426 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2427 if (!res) 2428 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); 2429 if (res) { 2430 spin_unlock(&local->baplock); 2431 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", 2432 fid); 2433 if (res == -ETIMEDOUT) { 2434 schedule_work(&local->reset_queue); 2435 } 2436 goto out; 2437 } 2438 2439 le16_to_cpus(&info.len); 2440 le16_to_cpus(&info.type); 2441 left = (info.len - 1) * 2; 2442 2443 if (info.len & 0x8000 || info.len == 0 || left > 2060) { 2444 /* data register seems to give 0x8000 in some error cases even 2445 * though busy bit is not set in offset register; 2446 * in addition, length must be at least 1 due to type field */ 2447 spin_unlock(&local->baplock); 2448 printk(KERN_DEBUG "%s: Received info frame with invalid " 2449 "length 0x%04x (type 0x%04x)\n", dev->name, info.len, 2450 info.type); 2451 goto out; 2452 } 2453 2454 skb = dev_alloc_skb(sizeof(info) + left); 2455 if (skb == NULL) { 2456 spin_unlock(&local->baplock); 2457 printk(KERN_DEBUG "%s: Could not allocate skb for info " 2458 "frame\n", dev->name); 2459 goto out; 2460 } 2461 2462 memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info)); 2463 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) 2464 { 2465 spin_unlock(&local->baplock); 2466 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " 2467 "len=0x%04x, type=0x%04x\n", 2468 dev->name, fid, info.len, info.type); 2469 dev_kfree_skb(skb); 2470 goto out; 2471 } 2472 spin_unlock(&local->baplock); 2473 2474 skb_queue_tail(&local->info_list, skb); 2475 tasklet_schedule(&local->info_tasklet); 2476 2477 out: 2478 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); 2479} 2480 2481 2482/* Called only as a tasklet (software IRQ) */ 2483static void hostap_bap_tasklet(unsigned long data) 2484{ 2485 local_info_t *local = (local_info_t *) data; 2486 struct net_device *dev = local->dev; 2487 u16 ev; 2488 int frames = 30; 2489 2490 if (local->func->card_present && !local->func->card_present(local)) 2491 return; 2492 2493 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2494 2495 /* Process all pending BAP events without generating new interrupts 2496 * for them */ 2497 while (frames-- > 0) { 2498 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2499 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) 2500 break; 2501 if (ev & HFA384X_EV_RX) 2502 prism2_rx(local); 2503 if (ev & HFA384X_EV_INFO) 2504 prism2_info(local); 2505 if (ev & HFA384X_EV_TX) 2506 prism2_tx_ev(local); 2507 if (ev & HFA384X_EV_TXEXC) 2508 prism2_txexc(local); 2509 } 2510 2511 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2512 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2513 2514 /* Enable interrupts for new BAP events */ 2515 hfa384x_events_all(dev); 2516 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2517} 2518 2519 2520/* Called only from hardware IRQ */ 2521static void prism2_infdrop(struct net_device *dev) 2522{ 2523 static unsigned long last_inquire = 0; 2524 2525 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); 2526 2527 /* some firmware versions seem to get stuck with 2528 * full CommTallies in high traffic load cases; every 2529 * packet will then cause INFDROP event and CommTallies 2530 * info frame will not be sent automatically. Try to 2531 * get out of this state by inquiring CommTallies. */ 2532 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { 2533 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, 2534 HFA384X_INFO_COMMTALLIES, NULL, 0); 2535 last_inquire = jiffies; 2536 } 2537} 2538 2539 2540/* Called only from hardware IRQ */ 2541static void prism2_ev_tick(struct net_device *dev) 2542{ 2543 struct hostap_interface *iface; 2544 local_info_t *local; 2545 u16 evstat, inten; 2546 static int prev_stuck = 0; 2547 2548 iface = netdev_priv(dev); 2549 local = iface->local; 2550 2551 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && 2552 local->last_tick_timer) { 2553 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 2554 inten = HFA384X_INW(HFA384X_INTEN_OFF); 2555 if (!prev_stuck) { 2556 printk(KERN_INFO "%s: SW TICK stuck? " 2557 "bits=0x%lx EvStat=%04x IntEn=%04x\n", 2558 dev->name, local->bits, evstat, inten); 2559 } 2560 local->sw_tick_stuck++; 2561 if ((evstat & HFA384X_BAP0_EVENTS) && 2562 (inten & HFA384X_BAP0_EVENTS)) { 2563 printk(KERN_INFO "%s: trying to recover from IRQ " 2564 "hang\n", dev->name); 2565 hfa384x_events_no_bap0(dev); 2566 } 2567 prev_stuck = 1; 2568 } else 2569 prev_stuck = 0; 2570} 2571 2572 2573/* Called only from hardware IRQ */ 2574static void prism2_check_magic(local_info_t *local) 2575{ 2576 /* at least PCI Prism2.5 with bus mastering seems to sometimes 2577 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the 2578 * register once or twice seems to get the correct value.. PCI cards 2579 * cannot anyway be removed during normal operation, so there is not 2580 * really any need for this verification with them. */ 2581 2582#ifndef PRISM2_PCI 2583#ifndef final_version 2584 static unsigned long last_magic_err = 0; 2585 struct net_device *dev = local->dev; 2586 2587 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 2588 if (!local->hw_ready) 2589 return; 2590 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2591 if (time_after(jiffies, last_magic_err + 10 * HZ)) { 2592 printk("%s: Interrupt, but SWSUPPORT0 does not match: " 2593 "%04X != %04X - card removed?\n", dev->name, 2594 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2595 HFA384X_MAGIC); 2596 last_magic_err = jiffies; 2597 } else if (net_ratelimit()) { 2598 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " 2599 "MAGIC=%04x\n", dev->name, 2600 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2601 HFA384X_MAGIC); 2602 } 2603 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) 2604 schedule_work(&local->reset_queue); 2605 return; 2606 } 2607#endif /* final_version */ 2608#endif /* !PRISM2_PCI */ 2609} 2610 2611 2612/* Called only from hardware IRQ */ 2613static irqreturn_t prism2_interrupt(int irq, void *dev_id) 2614{ 2615 struct net_device *dev = (struct net_device *) dev_id; 2616 struct hostap_interface *iface; 2617 local_info_t *local; 2618 int events = 0; 2619 u16 ev; 2620 2621 iface = netdev_priv(dev); 2622 local = iface->local; 2623 2624 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); 2625 2626 if (local->func->card_present && !local->func->card_present(local)) { 2627 if (net_ratelimit()) { 2628 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", 2629 dev->name); 2630 } 2631 return IRQ_HANDLED; 2632 } 2633 2634 prism2_check_magic(local); 2635 2636 for (;;) { 2637 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2638 if (ev == 0xffff) { 2639 if (local->shutdown) 2640 return IRQ_HANDLED; 2641 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2642 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", 2643 dev->name); 2644 return IRQ_HANDLED; 2645 } 2646 2647 ev &= HFA384X_INW(HFA384X_INTEN_OFF); 2648 if (ev == 0) 2649 break; 2650 2651 if (ev & HFA384X_EV_CMD) { 2652 prism2_cmd_ev(dev); 2653 } 2654 2655 /* Above events are needed even before hw is ready, but other 2656 * events should be skipped during initialization. This may 2657 * change for AllocEv if allocate_fid is implemented without 2658 * busy waiting. */ 2659 if (!local->hw_ready || local->hw_resetting || 2660 !local->dev_enabled) { 2661 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2662 if (ev & HFA384X_EV_CMD) 2663 goto next_event; 2664 if ((ev & HFA384X_EVENT_MASK) == 0) 2665 return IRQ_HANDLED; 2666 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && 2667 net_ratelimit()) { 2668 printk(KERN_DEBUG "%s: prism2_interrupt: hw " 2669 "not ready; skipping events 0x%04x " 2670 "(IntEn=0x%04x)%s%s%s\n", 2671 dev->name, ev, 2672 HFA384X_INW(HFA384X_INTEN_OFF), 2673 !local->hw_ready ? " (!hw_ready)" : "", 2674 local->hw_resetting ? 2675 " (hw_resetting)" : "", 2676 !local->dev_enabled ? 2677 " (!dev_enabled)" : ""); 2678 } 2679 HFA384X_OUTW(ev, HFA384X_EVACK_OFF); 2680 return IRQ_HANDLED; 2681 } 2682 2683 if (ev & HFA384X_EV_TICK) { 2684 prism2_ev_tick(dev); 2685 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); 2686 } 2687 2688 if (ev & HFA384X_EV_ALLOC) { 2689 prism2_alloc_ev(dev); 2690 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 2691 } 2692 2693 /* Reading data from the card is quite time consuming, so do it 2694 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed 2695 * and unmasked after needed data has been read completely. */ 2696 if (ev & HFA384X_BAP0_EVENTS) { 2697 hfa384x_events_no_bap0(dev); 2698 tasklet_schedule(&local->bap_tasklet); 2699 } 2700 2701#ifndef final_version 2702 if (ev & HFA384X_EV_WTERR) { 2703 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); 2704 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); 2705 } 2706#endif /* final_version */ 2707 2708 if (ev & HFA384X_EV_INFDROP) { 2709 prism2_infdrop(dev); 2710 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); 2711 } 2712 2713 next_event: 2714 events++; 2715 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { 2716 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " 2717 "(EvStat=0x%04x)\n", 2718 PRISM2_MAX_INTERRUPT_EVENTS, 2719 HFA384X_INW(HFA384X_EVSTAT_OFF)); 2720 break; 2721 } 2722 } 2723 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); 2724 return IRQ_RETVAL(events); 2725} 2726 2727 2728static void prism2_check_sta_fw_version(local_info_t *local) 2729{ 2730 struct hfa384x_comp_ident comp; 2731 int id, variant, major, minor; 2732 2733 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, 2734 &comp, sizeof(comp), 1) < 0) 2735 return; 2736 2737 local->fw_ap = 0; 2738 id = le16_to_cpu(comp.id); 2739 if (id != HFA384X_COMP_ID_STA) { 2740 if (id == HFA384X_COMP_ID_FW_AP) 2741 local->fw_ap = 1; 2742 return; 2743 } 2744 2745 major = __le16_to_cpu(comp.major); 2746 minor = __le16_to_cpu(comp.minor); 2747 variant = __le16_to_cpu(comp.variant); 2748 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); 2749 2750 /* Station firmware versions before 1.4.x seem to have a bug in 2751 * firmware-based WEP encryption when using Host AP mode, so use 2752 * host_encrypt as a default for them. Firmware version 1.4.9 is the 2753 * first one that has been seen to produce correct encryption, but the 2754 * bug might be fixed before that (although, at least 1.4.2 is broken). 2755 */ 2756 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); 2757 2758 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && 2759 !local->fw_encrypt_ok) { 2760 printk(KERN_DEBUG "%s: defaulting to host-based encryption as " 2761 "a workaround for firmware bug in Host AP mode WEP\n", 2762 local->dev->name); 2763 local->host_encrypt = 1; 2764 } 2765 2766 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) 2767 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; 2768 else { 2769 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " 2770 "workaround for firmware bug in Host AP mode WDS\n", 2771 local->dev->name); 2772 } 2773 2774 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); 2775} 2776 2777 2778static void prism2_crypt_deinit_entries(local_info_t *local, int force) 2779{ 2780 struct list_head *ptr, *n; 2781 struct ieee80211_crypt_data *entry; 2782 2783 for (ptr = local->crypt_deinit_list.next, n = ptr->next; 2784 ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) { 2785 entry = list_entry(ptr, struct ieee80211_crypt_data, list); 2786 2787 if (atomic_read(&entry->refcnt) != 0 && !force) 2788 continue; 2789 2790 list_del(ptr); 2791 2792 if (entry->ops) 2793 entry->ops->deinit(entry->priv); 2794 kfree(entry); 2795 } 2796} 2797 2798 2799static void prism2_crypt_deinit_handler(unsigned long data) 2800{ 2801 local_info_t *local = (local_info_t *) data; 2802 unsigned long flags; 2803 2804 spin_lock_irqsave(&local->lock, flags); 2805 prism2_crypt_deinit_entries(local, 0); 2806 if (!list_empty(&local->crypt_deinit_list)) { 2807 printk(KERN_DEBUG "%s: entries remaining in delayed crypt " 2808 "deletion list\n", local->dev->name); 2809 local->crypt_deinit_timer.expires = jiffies + HZ; 2810 add_timer(&local->crypt_deinit_timer); 2811 } 2812 spin_unlock_irqrestore(&local->lock, flags); 2813 2814} 2815 2816 2817static void hostap_passive_scan(unsigned long data) 2818{ 2819 local_info_t *local = (local_info_t *) data; 2820 struct net_device *dev = local->dev; 2821 u16 channel; 2822 2823 if (local->passive_scan_interval <= 0) 2824 return; 2825 2826 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { 2827 int max_tries = 16; 2828 2829 /* Even though host system does not really know when the WLAN 2830 * MAC is sending frames, try to avoid changing channels for 2831 * passive scanning when a host-generated frame is being 2832 * transmitted */ 2833 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 2834 printk(KERN_DEBUG "%s: passive scan detected pending " 2835 "TX - delaying\n", dev->name); 2836 local->passive_scan_timer.expires = jiffies + HZ / 10; 2837 add_timer(&local->passive_scan_timer); 2838 return; 2839 } 2840 2841 do { 2842 local->passive_scan_channel++; 2843 if (local->passive_scan_channel > 14) 2844 local->passive_scan_channel = 1; 2845 max_tries--; 2846 } while (!(local->channel_mask & 2847 (1 << (local->passive_scan_channel - 1))) && 2848 max_tries > 0); 2849 2850 if (max_tries == 0) { 2851 printk(KERN_INFO "%s: no allowed passive scan channels" 2852 " found\n", dev->name); 2853 return; 2854 } 2855 2856 printk(KERN_DEBUG "%s: passive scan channel %d\n", 2857 dev->name, local->passive_scan_channel); 2858 channel = local->passive_scan_channel; 2859 local->passive_scan_state = PASSIVE_SCAN_WAIT; 2860 local->passive_scan_timer.expires = jiffies + HZ / 10; 2861 } else { 2862 channel = local->channel; 2863 local->passive_scan_state = PASSIVE_SCAN_LISTEN; 2864 local->passive_scan_timer.expires = jiffies + 2865 local->passive_scan_interval * HZ; 2866 } 2867 2868 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | 2869 (HFA384X_TEST_CHANGE_CHANNEL << 8), 2870 channel, NULL, 0)) 2871 printk(KERN_ERR "%s: passive scan channel set %d " 2872 "failed\n", dev->name, channel); 2873 2874 add_timer(&local->passive_scan_timer); 2875} 2876 2877 2878/* Called only as a scheduled task when communications quality values should 2879 * be updated. */ 2880static void handle_comms_qual_update(struct work_struct *work) 2881{ 2882 local_info_t *local = 2883 container_of(work, local_info_t, comms_qual_update); 2884 prism2_update_comms_qual(local->dev); 2885} 2886 2887 2888/* Software watchdog - called as a timer. Hardware interrupt (Tick event) is 2889 * used to monitor that local->last_tick_timer is being updated. If not, 2890 * interrupt busy-loop is assumed and driver tries to recover by masking out 2891 * some events. */ 2892static void hostap_tick_timer(unsigned long data) 2893{ 2894 static unsigned long last_inquire = 0; 2895 local_info_t *local = (local_info_t *) data; 2896 local->last_tick_timer = jiffies; 2897 2898 /* Inquire CommTallies every 10 seconds to keep the statistics updated 2899 * more often during low load and when using 32-bit tallies. */ 2900 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && 2901 !local->hw_downloading && local->hw_ready && 2902 !local->hw_resetting && local->dev_enabled) { 2903 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, 2904 HFA384X_INFO_COMMTALLIES, NULL, 0); 2905 last_inquire = jiffies; 2906 } 2907 2908 if ((local->last_comms_qual_update == 0 || 2909 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && 2910 (local->iw_mode == IW_MODE_INFRA || 2911 local->iw_mode == IW_MODE_ADHOC)) { 2912 schedule_work(&local->comms_qual_update); 2913 } 2914 2915 local->tick_timer.expires = jiffies + 2 * HZ; 2916 add_timer(&local->tick_timer); 2917} 2918 2919 2920#ifndef PRISM2_NO_PROCFS_DEBUG 2921static int prism2_registers_proc_read(char *page, char **start, off_t off, 2922 int count, int *eof, void *data) 2923{ 2924 char *p = page; 2925 local_info_t *local = (local_info_t *) data; 2926 2927 if (off != 0) { 2928 *eof = 1; 2929 return 0; 2930 } 2931 2932#define SHOW_REG(n) \ 2933p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) 2934 2935 SHOW_REG(CMD); 2936 SHOW_REG(PARAM0); 2937 SHOW_REG(PARAM1); 2938 SHOW_REG(PARAM2); 2939 SHOW_REG(STATUS); 2940 SHOW_REG(RESP0); 2941 SHOW_REG(RESP1); 2942 SHOW_REG(RESP2); 2943 SHOW_REG(INFOFID); 2944 SHOW_REG(CONTROL); 2945 SHOW_REG(SELECT0); 2946 SHOW_REG(SELECT1); 2947 SHOW_REG(OFFSET0); 2948 SHOW_REG(OFFSET1); 2949 SHOW_REG(RXFID); 2950 SHOW_REG(ALLOCFID); 2951 SHOW_REG(TXCOMPLFID); 2952 SHOW_REG(SWSUPPORT0); 2953 SHOW_REG(SWSUPPORT1); 2954 SHOW_REG(SWSUPPORT2); 2955 SHOW_REG(EVSTAT); 2956 SHOW_REG(INTEN); 2957 SHOW_REG(EVACK); 2958 /* Do not read data registers, because they change the state of the 2959 * MAC (offset += 2) */ 2960 /* SHOW_REG(DATA0); */ 2961 /* SHOW_REG(DATA1); */ 2962 SHOW_REG(AUXPAGE); 2963 SHOW_REG(AUXOFFSET); 2964 /* SHOW_REG(AUXDATA); */ 2965#ifdef PRISM2_PCI 2966 SHOW_REG(PCICOR); 2967 SHOW_REG(PCIHCR); 2968 SHOW_REG(PCI_M0_ADDRH); 2969 SHOW_REG(PCI_M0_ADDRL); 2970 SHOW_REG(PCI_M0_LEN); 2971 SHOW_REG(PCI_M0_CTL); 2972 SHOW_REG(PCI_STATUS); 2973 SHOW_REG(PCI_M1_ADDRH); 2974 SHOW_REG(PCI_M1_ADDRL); 2975 SHOW_REG(PCI_M1_LEN); 2976 SHOW_REG(PCI_M1_CTL); 2977#endif /* PRISM2_PCI */ 2978 2979 return (p - page); 2980} 2981#endif /* PRISM2_NO_PROCFS_DEBUG */ 2982 2983 2984struct set_tim_data { 2985 struct list_head list; 2986 int aid; 2987 int set; 2988}; 2989 2990static int prism2_set_tim(struct net_device *dev, int aid, int set) 2991{ 2992 struct list_head *ptr; 2993 struct set_tim_data *new_entry; 2994 struct hostap_interface *iface; 2995 local_info_t *local; 2996 2997 iface = netdev_priv(dev); 2998 local = iface->local; 2999 3000 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); 3001 if (new_entry == NULL) { 3002 printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n", 3003 local->dev->name); 3004 return -ENOMEM; 3005 } 3006 new_entry->aid = aid; 3007 new_entry->set = set; 3008 3009 spin_lock_bh(&local->set_tim_lock); 3010 list_for_each(ptr, &local->set_tim_list) { 3011 struct set_tim_data *entry = 3012 list_entry(ptr, struct set_tim_data, list); 3013 if (entry->aid == aid) { 3014 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " 3015 "set=%d ==> %d\n", 3016 local->dev->name, aid, entry->set, set); 3017 entry->set = set; 3018 kfree(new_entry); 3019 new_entry = NULL; 3020 break; 3021 } 3022 } 3023 if (new_entry) 3024 list_add_tail(&new_entry->list, &local->set_tim_list); 3025 spin_unlock_bh(&local->set_tim_lock); 3026 3027 schedule_work(&local->set_tim_queue); 3028 3029 return 0; 3030} 3031 3032 3033static void handle_set_tim_queue(struct work_struct *work) 3034{ 3035 local_info_t *local = container_of(work, local_info_t, set_tim_queue); 3036 struct set_tim_data *entry; 3037 u16 val; 3038 3039 for (;;) { 3040 entry = NULL; 3041 spin_lock_bh(&local->set_tim_lock); 3042 if (!list_empty(&local->set_tim_list)) { 3043 entry = list_entry(local->set_tim_list.next, 3044 struct set_tim_data, list); 3045 list_del(&entry->list); 3046 } 3047 spin_unlock_bh(&local->set_tim_lock); 3048 if (!entry) 3049 break; 3050 3051 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", 3052 local->dev->name, entry->aid, entry->set); 3053 3054 val = entry->aid; 3055 if (entry->set) 3056 val |= 0x8000; 3057 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { 3058 printk(KERN_DEBUG "%s: set_tim failed (aid=%d " 3059 "set=%d)\n", 3060 local->dev->name, entry->aid, entry->set); 3061 } 3062 3063 kfree(entry); 3064 } 3065} 3066 3067 3068static void prism2_clear_set_tim_queue(local_info_t *local) 3069{ 3070 struct list_head *ptr, *n; 3071 3072 list_for_each_safe(ptr, n, &local->set_tim_list) { 3073 struct set_tim_data *entry; 3074 entry = list_entry(ptr, struct set_tim_data, list); 3075 list_del(&entry->list); 3076 kfree(entry); 3077 } 3078} 3079 3080 3081/* 3082 * HostAP uses two layers of net devices, where the inner 3083 * layer gets called all the time from the outer layer. 3084 * This is a natural nesting, which needs a split lock type. 3085 */ 3086static struct lock_class_key hostap_netdev_xmit_lock_key; 3087 3088 3089static struct net_device * 3090prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, 3091 struct device *sdev) 3092{ 3093 struct net_device *dev; 3094 struct hostap_interface *iface; 3095 struct local_info *local; 3096 int len, i, ret; 3097 3098 if (funcs == NULL) 3099 return NULL; 3100 3101 len = strlen(dev_template); 3102 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { 3103 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", 3104 dev_template); 3105 return NULL; 3106 } 3107 3108 len = sizeof(struct hostap_interface) + 3109 3 + sizeof(struct local_info) + 3110 3 + sizeof(struct ap_data); 3111 3112 dev = alloc_etherdev(len); 3113 if (dev == NULL) 3114 return NULL; 3115 3116 iface = netdev_priv(dev); 3117 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); 3118 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); 3119 local->dev = iface->dev = dev; 3120 iface->local = local; 3121 iface->type = HOSTAP_INTERFACE_MASTER; 3122 INIT_LIST_HEAD(&local->hostap_interfaces); 3123 3124 local->hw_module = THIS_MODULE; 3125 3126#ifdef PRISM2_IO_DEBUG 3127 local->io_debug_enabled = 1; 3128#endif /* PRISM2_IO_DEBUG */ 3129 3130 local->func = funcs; 3131 local->func->cmd = hfa384x_cmd; 3132 local->func->read_regs = hfa384x_read_regs; 3133 local->func->get_rid = hfa384x_get_rid; 3134 local->func->set_rid = hfa384x_set_rid; 3135 local->func->hw_enable = prism2_hw_enable; 3136 local->func->hw_config = prism2_hw_config; 3137 local->func->hw_reset = prism2_hw_reset; 3138 local->func->hw_shutdown = prism2_hw_shutdown; 3139 local->func->reset_port = prism2_reset_port; 3140 local->func->schedule_reset = prism2_schedule_reset; 3141#ifdef PRISM2_DOWNLOAD_SUPPORT 3142 local->func->read_aux = prism2_download_aux_dump; 3143 local->func->download = prism2_download; 3144#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3145 local->func->tx = prism2_tx_80211; 3146 local->func->set_tim = prism2_set_tim; 3147 local->func->need_tx_headroom = 0; /* no need to add txdesc in 3148 * skb->data (FIX: maybe for DMA bus 3149 * mastering? */ 3150 3151 local->mtu = mtu; 3152 3153 rwlock_init(&local->iface_lock); 3154 spin_lock_init(&local->txfidlock); 3155 spin_lock_init(&local->cmdlock); 3156 spin_lock_init(&local->baplock); 3157 spin_lock_init(&local->lock); 3158 init_MUTEX(&local->rid_bap_sem); 3159 3160 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) 3161 card_idx = 0; 3162 local->card_idx = card_idx; 3163 3164 len = strlen(essid); 3165 memcpy(local->essid, essid, 3166 len > MAX_SSID_LEN ? MAX_SSID_LEN : len); 3167 local->essid[MAX_SSID_LEN] = '\0'; 3168 i = GET_INT_PARM(iw_mode, card_idx); 3169 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || 3170 i == IW_MODE_MONITOR) { 3171 local->iw_mode = i; 3172 } else { 3173 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " 3174 "IW_MODE_MASTER\n", i); 3175 local->iw_mode = IW_MODE_MASTER; 3176 } 3177 local->channel = GET_INT_PARM(channel, card_idx); 3178 local->beacon_int = GET_INT_PARM(beacon_int, card_idx); 3179 local->dtim_period = GET_INT_PARM(dtim_period, card_idx); 3180 local->wds_max_connections = 16; 3181 local->tx_control = HFA384X_TX_CTRL_FLAGS; 3182 local->manual_retry_count = -1; 3183 local->rts_threshold = 2347; 3184 local->fragm_threshold = 2346; 3185 local->rssi_to_dBm = 100; /* default; to be overriden by 3186 * cnfDbmAdjust, if available */ 3187 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; 3188 local->sram_type = -1; 3189 local->scan_channel_mask = 0xffff; 3190 3191 /* Initialize task queue structures */ 3192 INIT_WORK(&local->reset_queue, handle_reset_queue); 3193 INIT_WORK(&local->set_multicast_list_queue, 3194 hostap_set_multicast_list_queue); 3195 3196 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); 3197 INIT_LIST_HEAD(&local->set_tim_list); 3198 spin_lock_init(&local->set_tim_lock); 3199 3200 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); 3201 3202 /* Initialize tasklets for handling hardware IRQ related operations 3203 * outside hw IRQ handler */ 3204#define HOSTAP_TASKLET_INIT(q, f, d) \ 3205do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ 3206while (0) 3207 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, 3208 (unsigned long) local); 3209 3210 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, 3211 (unsigned long) local); 3212 hostap_info_init(local); 3213 3214 HOSTAP_TASKLET_INIT(&local->rx_tasklet, 3215 hostap_rx_tasklet, (unsigned long) local); 3216 skb_queue_head_init(&local->rx_list); 3217 3218 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, 3219 hostap_sta_tx_exc_tasklet, (unsigned long) local); 3220 skb_queue_head_init(&local->sta_tx_exc_list); 3221 3222 INIT_LIST_HEAD(&local->cmd_queue); 3223 init_waitqueue_head(&local->hostscan_wq); 3224 INIT_LIST_HEAD(&local->crypt_deinit_list); 3225 init_timer(&local->crypt_deinit_timer); 3226 local->crypt_deinit_timer.data = (unsigned long) local; 3227 local->crypt_deinit_timer.function = prism2_crypt_deinit_handler; 3228 3229 init_timer(&local->passive_scan_timer); 3230 local->passive_scan_timer.data = (unsigned long) local; 3231 local->passive_scan_timer.function = hostap_passive_scan; 3232 3233 init_timer(&local->tick_timer); 3234 local->tick_timer.data = (unsigned long) local; 3235 local->tick_timer.function = hostap_tick_timer; 3236 local->tick_timer.expires = jiffies + 2 * HZ; 3237 add_timer(&local->tick_timer); 3238 3239 INIT_LIST_HEAD(&local->bss_list); 3240 3241 hostap_setup_dev(dev, local, 1); 3242 local->saved_eth_header_parse = dev->hard_header_parse; 3243 3244 dev->hard_start_xmit = hostap_master_start_xmit; 3245 dev->type = ARPHRD_IEEE80211; 3246 dev->hard_header_parse = hostap_80211_header_parse; 3247 3248 rtnl_lock(); 3249 ret = dev_alloc_name(dev, "wifi%d"); 3250 SET_NETDEV_DEV(dev, sdev); 3251 if (ret >= 0) 3252 ret = register_netdevice(dev); 3253 3254 lockdep_set_class(&dev->_xmit_lock, &hostap_netdev_xmit_lock_key); 3255 rtnl_unlock(); 3256 if (ret < 0) { 3257 printk(KERN_WARNING "%s: register netdevice failed!\n", 3258 dev_info); 3259 goto fail; 3260 } 3261 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); 3262 3263#ifndef PRISM2_NO_PROCFS_DEBUG 3264 create_proc_read_entry("registers", 0, local->proc, 3265 prism2_registers_proc_read, local); 3266#endif /* PRISM2_NO_PROCFS_DEBUG */ 3267 3268 hostap_init_data(local); 3269 return dev; 3270 3271 fail: 3272 free_netdev(dev); 3273 return NULL; 3274} 3275 3276 3277static int hostap_hw_ready(struct net_device *dev) 3278{ 3279 struct hostap_interface *iface; 3280 struct local_info *local; 3281 3282 iface = netdev_priv(dev); 3283 local = iface->local; 3284 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, 3285 "", dev_template); 3286 3287 if (local->ddev) { 3288 if (local->iw_mode == IW_MODE_INFRA || 3289 local->iw_mode == IW_MODE_ADHOC) { 3290 netif_carrier_off(local->dev); 3291 netif_carrier_off(local->ddev); 3292 } 3293 hostap_init_proc(local); 3294 hostap_init_ap_proc(local); 3295 return 0; 3296 } 3297 3298 return -1; 3299} 3300 3301 3302static void prism2_free_local_data(struct net_device *dev) 3303{ 3304 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; 3305 int i; 3306 struct hostap_interface *iface; 3307 struct local_info *local; 3308 struct list_head *ptr, *n; 3309 3310 if (dev == NULL) 3311 return; 3312 3313 iface = netdev_priv(dev); 3314 local = iface->local; 3315 3316 /* Unregister all netdevs before freeing local data. */ 3317 list_for_each_safe(ptr, n, &local->hostap_interfaces) { 3318 iface = list_entry(ptr, struct hostap_interface, list); 3319 if (iface->type == HOSTAP_INTERFACE_MASTER) { 3320 /* special handling for this interface below */ 3321 continue; 3322 } 3323 hostap_remove_interface(iface->dev, 0, 1); 3324 } 3325 3326 unregister_netdev(local->dev); 3327 3328 flush_scheduled_work(); 3329 3330 if (timer_pending(&local->crypt_deinit_timer)) 3331 del_timer(&local->crypt_deinit_timer); 3332 prism2_crypt_deinit_entries(local, 1); 3333 3334 if (timer_pending(&local->passive_scan_timer)) 3335 del_timer(&local->passive_scan_timer); 3336 3337 if (timer_pending(&local->tick_timer)) 3338 del_timer(&local->tick_timer); 3339 3340 prism2_clear_cmd_queue(local); 3341 3342 skb_queue_purge(&local->info_list); 3343 skb_queue_purge(&local->rx_list); 3344 skb_queue_purge(&local->sta_tx_exc_list); 3345 3346 if (local->dev_enabled) 3347 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 3348 3349 for (i = 0; i < WEP_KEYS; i++) { 3350 struct ieee80211_crypt_data *crypt = local->crypt[i]; 3351 if (crypt) { 3352 if (crypt->ops) 3353 crypt->ops->deinit(crypt->priv); 3354 kfree(crypt); 3355 local->crypt[i] = NULL; 3356 } 3357 } 3358 3359 if (local->ap != NULL) 3360 hostap_free_data(local->ap); 3361 3362#ifndef PRISM2_NO_PROCFS_DEBUG 3363 if (local->proc != NULL) 3364 remove_proc_entry("registers", local->proc); 3365#endif /* PRISM2_NO_PROCFS_DEBUG */ 3366 hostap_remove_proc(local); 3367 3368 tx_cb = local->tx_callback; 3369 while (tx_cb != NULL) { 3370 tx_cb_prev = tx_cb; 3371 tx_cb = tx_cb->next; 3372 kfree(tx_cb_prev); 3373 } 3374 3375 hostap_set_hostapd(local, 0, 0); 3376 hostap_set_hostapd_sta(local, 0, 0); 3377 3378 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { 3379 if (local->frag_cache[i].skb != NULL) 3380 dev_kfree_skb(local->frag_cache[i].skb); 3381 } 3382 3383#ifdef PRISM2_DOWNLOAD_SUPPORT 3384 prism2_download_free_data(local->dl_pri); 3385 prism2_download_free_data(local->dl_sec); 3386#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3387 3388 prism2_clear_set_tim_queue(local); 3389 3390 list_for_each_safe(ptr, n, &local->bss_list) { 3391 struct hostap_bss_info *bss = 3392 list_entry(ptr, struct hostap_bss_info, list); 3393 kfree(bss); 3394 } 3395 3396 kfree(local->pda); 3397 kfree(local->last_scan_results); 3398 kfree(local->generic_elem); 3399 3400 free_netdev(local->dev); 3401} 3402 3403 3404#ifndef PRISM2_PLX 3405static void prism2_suspend(struct net_device *dev) 3406{ 3407 struct hostap_interface *iface; 3408 struct local_info *local; 3409 union iwreq_data wrqu; 3410 3411 iface = dev->priv; 3412 local = iface->local; 3413 3414 /* Send disconnect event, e.g., to trigger reassociation after resume 3415 * if wpa_supplicant is used. */ 3416 memset(&wrqu, 0, sizeof(wrqu)); 3417 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3418 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); 3419 3420 /* Disable hardware and firmware */ 3421 prism2_hw_shutdown(dev, 0); 3422} 3423#endif /* PRISM2_PLX */ 3424 3425 3426/* These might at some point be compiled separately and used as separate 3427 * kernel modules or linked into one */ 3428#ifdef PRISM2_DOWNLOAD_SUPPORT 3429#include "hostap_download.c" 3430#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3431 3432#ifdef PRISM2_CALLBACK 3433/* External hostap_callback.c file can be used to, e.g., blink activity led. 3434 * This can use platform specific code and must define prism2_callback() 3435 * function (if PRISM2_CALLBACK is not defined, these function calls are not 3436 * used. */ 3437#include "hostap_callback.c" 3438#endif /* PRISM2_CALLBACK */ 3439