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 <linux/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/seq_file.h> 42 #include <linux/if_arp.h> 43 #include <linux/delay.h> 44 #include <linux/random.h> 45 #include <linux/wait.h> 46 #include <linux/sched/signal.h> 47 #include <linux/rtnetlink.h> 48 #include <linux/wireless.h> 49 #include <net/iw_handler.h> 50 #include <net/lib80211.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 60 static int mtu = 1500; 61 module_param(mtu, int, 0444); 62 MODULE_PARM_DESC(mtu, "Maximum transfer unit"); 63 64 static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; 65 module_param_array(channel, int, NULL, 0444); 66 MODULE_PARM_DESC(channel, "Initial channel"); 67 68 static char essid[33] = "test"; 69 module_param_string(essid, essid, sizeof(essid), 0444); 70 MODULE_PARM_DESC(essid, "Host AP's ESSID"); 71 72 static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; 73 module_param_array(iw_mode, int, NULL, 0444); 74 MODULE_PARM_DESC(iw_mode, "Initial operation mode"); 75 76 static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; 77 module_param_array(beacon_int, int, NULL, 0444); 78 MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); 79 80 static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; 81 module_param_array(dtim_period, int, NULL, 0444); 82 MODULE_PARM_DESC(dtim_period, "DTIM period"); 83 84 static char dev_template[16] = "wlan%d"; 85 module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); 86 MODULE_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 */ 126 127 128 static void prism2_hw_reset(struct net_device *dev); 129 static void prism2_check_sta_fw_version(local_info_t *local); 130 131 #ifdef PRISM2_DOWNLOAD_SUPPORT 132 /* hostap_download.c */ 133 static const struct file_operations prism2_download_aux_dump_proc_fops; 134 static u8 * prism2_read_pda(struct net_device *dev); 135 static int prism2_download(local_info_t *local, 136 struct prism2_download_param *param); 137 static void prism2_download_free_data(struct prism2_download_data *dl); 138 static int prism2_download_volatile(local_info_t *local, 139 struct prism2_download_data *param); 140 static int prism2_download_genesis(local_info_t *local, 141 struct prism2_download_data *param); 142 static int prism2_get_ram_size(local_info_t *local); 143 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 144 145 146 147 148 #ifndef final_version 149 /* magic value written to SWSUPPORT0 reg. for detecting whether card is still 150 * present */ 151 #define HFA384X_MAGIC 0x8A32 152 #endif 153 154 static void hfa384x_read_regs(struct net_device *dev, 155 struct hfa384x_regs *regs) 156 { 157 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); 158 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 159 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); 160 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); 161 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); 162 } 163 164 165 /** 166 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) 167 * @local: pointer to private Host AP driver data 168 * @entry: Prism2 command queue entry to be freed 169 * @del_req: request the entry to be removed 170 * 171 * Internal helper function for freeing Prism2 command queue entries. 172 * Caller must have acquired local->cmdlock before calling this function. 173 */ 174 static inline void __hostap_cmd_queue_free(local_info_t *local, 175 struct hostap_cmd_queue *entry, 176 int del_req) 177 { 178 if (del_req) { 179 entry->del_req = 1; 180 if (!list_empty(&entry->list)) { 181 list_del_init(&entry->list); 182 local->cmd_queue_len--; 183 } 184 } 185 186 if (refcount_dec_and_test(&entry->usecnt) && entry->del_req) 187 kfree(entry); 188 } 189 190 191 /** 192 * hostap_cmd_queue_free - Free Prism2 command queue entry 193 * @local: pointer to private Host AP driver data 194 * @entry: Prism2 command queue entry to be freed 195 * @del_req: request the entry to be removed 196 * 197 * Free a Prism2 command queue entry. 198 */ 199 static inline void hostap_cmd_queue_free(local_info_t *local, 200 struct hostap_cmd_queue *entry, 201 int del_req) 202 { 203 unsigned long flags; 204 205 spin_lock_irqsave(&local->cmdlock, flags); 206 __hostap_cmd_queue_free(local, entry, del_req); 207 spin_unlock_irqrestore(&local->cmdlock, flags); 208 } 209 210 211 /** 212 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries 213 * @local: pointer to private Host AP driver data 214 */ 215 static void prism2_clear_cmd_queue(local_info_t *local) 216 { 217 struct list_head *ptr, *n; 218 unsigned long flags; 219 struct hostap_cmd_queue *entry; 220 221 spin_lock_irqsave(&local->cmdlock, flags); 222 list_for_each_safe(ptr, n, &local->cmd_queue) { 223 entry = list_entry(ptr, struct hostap_cmd_queue, list); 224 refcount_inc(&entry->usecnt); 225 printk(KERN_DEBUG "%s: removed pending cmd_queue entry " 226 "(type=%d, cmd=0x%04x, param0=0x%04x)\n", 227 local->dev->name, entry->type, entry->cmd, 228 entry->param0); 229 __hostap_cmd_queue_free(local, entry, 1); 230 } 231 if (local->cmd_queue_len) { 232 /* This should not happen; print debug message and clear 233 * queue length. */ 234 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " 235 "flush\n", local->dev->name, local->cmd_queue_len); 236 local->cmd_queue_len = 0; 237 } 238 spin_unlock_irqrestore(&local->cmdlock, flags); 239 } 240 241 242 /** 243 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware 244 * @dev: pointer to net_device 245 * @entry: Prism2 command queue entry to be issued 246 */ 247 static int hfa384x_cmd_issue(struct net_device *dev, 248 struct hostap_cmd_queue *entry) 249 { 250 struct hostap_interface *iface; 251 local_info_t *local; 252 int tries; 253 u16 reg; 254 unsigned long flags; 255 256 iface = netdev_priv(dev); 257 local = iface->local; 258 259 if (local->func->card_present && !local->func->card_present(local)) 260 return -ENODEV; 261 262 if (entry->issued) { 263 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", 264 dev->name, entry); 265 } 266 267 /* wait until busy bit is clear; this should always be clear since the 268 * commands are serialized */ 269 tries = HFA384X_CMD_BUSY_TIMEOUT; 270 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 271 tries--; 272 udelay(1); 273 } 274 #ifndef final_version 275 if (tries != HFA384X_CMD_BUSY_TIMEOUT) { 276 prism2_io_debug_error(dev, 1); 277 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " 278 "for %d usec\n", dev->name, 279 HFA384X_CMD_BUSY_TIMEOUT - tries); 280 } 281 #endif 282 if (tries == 0) { 283 reg = HFA384X_INW(HFA384X_CMD_OFF); 284 prism2_io_debug_error(dev, 2); 285 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " 286 "reg=0x%04x\n", dev->name, reg); 287 return -ETIMEDOUT; 288 } 289 290 /* write command */ 291 spin_lock_irqsave(&local->cmdlock, flags); 292 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); 293 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); 294 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); 295 entry->issued = 1; 296 spin_unlock_irqrestore(&local->cmdlock, flags); 297 298 return 0; 299 } 300 301 302 /** 303 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion 304 * @dev: pointer to net_device 305 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 306 * @param0: value for Param0 register 307 * @param1: value for Param1 register (pointer; %NULL if not used) 308 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed 309 * 310 * Issue given command (possibly after waiting in command queue) and sleep 311 * until the command is completed (or timed out or interrupted). This can be 312 * called only from user process context. 313 */ 314 static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, 315 u16 *param1, u16 *resp0) 316 { 317 struct hostap_interface *iface; 318 local_info_t *local; 319 int err, res, issue, issued = 0; 320 unsigned long flags; 321 struct hostap_cmd_queue *entry; 322 DECLARE_WAITQUEUE(wait, current); 323 324 iface = netdev_priv(dev); 325 local = iface->local; 326 327 if (in_interrupt()) { 328 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " 329 "context\n", dev->name); 330 return -1; 331 } 332 333 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { 334 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 335 dev->name); 336 return -1; 337 } 338 339 if (signal_pending(current)) 340 return -EINTR; 341 342 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 343 if (entry == NULL) 344 return -ENOMEM; 345 346 refcount_set(&entry->usecnt, 1); 347 entry->type = CMD_SLEEP; 348 entry->cmd = cmd; 349 entry->param0 = param0; 350 if (param1) 351 entry->param1 = *param1; 352 init_waitqueue_head(&entry->compl); 353 354 /* prepare to wait for command completion event, but do not sleep yet 355 */ 356 add_wait_queue(&entry->compl, &wait); 357 set_current_state(TASK_INTERRUPTIBLE); 358 359 spin_lock_irqsave(&local->cmdlock, flags); 360 issue = list_empty(&local->cmd_queue); 361 if (issue) 362 entry->issuing = 1; 363 list_add_tail(&entry->list, &local->cmd_queue); 364 local->cmd_queue_len++; 365 spin_unlock_irqrestore(&local->cmdlock, flags); 366 367 err = 0; 368 if (!issue) 369 goto wait_completion; 370 371 if (signal_pending(current)) 372 err = -EINTR; 373 374 if (!err) { 375 if (hfa384x_cmd_issue(dev, entry)) 376 err = -ETIMEDOUT; 377 else 378 issued = 1; 379 } 380 381 wait_completion: 382 if (!err && entry->type != CMD_COMPLETED) { 383 /* sleep until command is completed or timed out */ 384 res = schedule_timeout(2 * HZ); 385 } else 386 res = -1; 387 388 if (!err && signal_pending(current)) 389 err = -EINTR; 390 391 if (err && issued) { 392 /* the command was issued, so a CmdCompl event should occur 393 * soon; however, there's a pending signal and 394 * schedule_timeout() would be interrupted; wait a short period 395 * of time to avoid removing entry from the list before 396 * CmdCompl event */ 397 udelay(300); 398 } 399 400 set_current_state(TASK_RUNNING); 401 remove_wait_queue(&entry->compl, &wait); 402 403 /* If entry->list is still in the list, it must be removed 404 * first and in this case prism2_cmd_ev() does not yet have 405 * local reference to it, and the data can be kfree()'d 406 * here. If the command completion event is still generated, 407 * it will be assigned to next (possibly) pending command, but 408 * the driver will reset the card anyway due to timeout 409 * 410 * If the entry is not in the list prism2_cmd_ev() has a local 411 * reference to it, but keeps cmdlock as long as the data is 412 * needed, so the data can be kfree()'d here. */ 413 414 /* FIX: if the entry->list is in the list, it has not been completed 415 * yet, so removing it here is somewhat wrong.. this could cause 416 * references to freed memory and next list_del() causing NULL pointer 417 * dereference.. it would probably be better to leave the entry in the 418 * list and the list should be emptied during hw reset */ 419 420 spin_lock_irqsave(&local->cmdlock, flags); 421 if (!list_empty(&entry->list)) { 422 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " 423 "(entry=%p, type=%d, res=%d)\n", dev->name, entry, 424 entry->type, res); 425 list_del_init(&entry->list); 426 local->cmd_queue_len--; 427 } 428 spin_unlock_irqrestore(&local->cmdlock, flags); 429 430 if (err) { 431 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", 432 dev->name, err); 433 res = err; 434 goto done; 435 } 436 437 if (entry->type != CMD_COMPLETED) { 438 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 439 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " 440 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " 441 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, 442 res, entry, entry->type, entry->cmd, entry->param0, reg, 443 HFA384X_INW(HFA384X_INTEN_OFF)); 444 if (reg & HFA384X_EV_CMD) { 445 /* Command completion event is pending, but the 446 * interrupt was not delivered - probably an issue 447 * with pcmcia-cs configuration. */ 448 printk(KERN_WARNING "%s: interrupt delivery does not " 449 "seem to work\n", dev->name); 450 } 451 prism2_io_debug_error(dev, 3); 452 res = -ETIMEDOUT; 453 goto done; 454 } 455 456 if (resp0 != NULL) 457 *resp0 = entry->resp0; 458 #ifndef final_version 459 if (entry->res) { 460 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " 461 "resp0=0x%04x\n", 462 dev->name, cmd, entry->res, entry->resp0); 463 } 464 #endif /* final_version */ 465 466 res = entry->res; 467 done: 468 hostap_cmd_queue_free(local, entry, 1); 469 return res; 470 } 471 472 473 /** 474 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed 475 * @dev: pointer to net_device 476 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 477 * @param0: value for Param0 register 478 * @callback: command completion callback function (%NULL = no callback) 479 * @context: context data to be given to the callback function 480 * 481 * Issue given command (possibly after waiting in command queue) and use 482 * callback function to indicate command completion. This can be called both 483 * from user and interrupt context. The callback function will be called in 484 * hardware IRQ context. It can be %NULL, when no function is called when 485 * command is completed. 486 */ 487 static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, 488 void (*callback)(struct net_device *dev, 489 long context, u16 resp0, 490 u16 status), 491 long context) 492 { 493 struct hostap_interface *iface; 494 local_info_t *local; 495 int issue, ret; 496 unsigned long flags; 497 struct hostap_cmd_queue *entry; 498 499 iface = netdev_priv(dev); 500 local = iface->local; 501 502 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { 503 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 504 dev->name); 505 return -1; 506 } 507 508 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 509 if (entry == NULL) 510 return -ENOMEM; 511 512 refcount_set(&entry->usecnt, 1); 513 entry->type = CMD_CALLBACK; 514 entry->cmd = cmd; 515 entry->param0 = param0; 516 entry->callback = callback; 517 entry->context = context; 518 519 spin_lock_irqsave(&local->cmdlock, flags); 520 issue = list_empty(&local->cmd_queue); 521 if (issue) 522 entry->issuing = 1; 523 list_add_tail(&entry->list, &local->cmd_queue); 524 local->cmd_queue_len++; 525 spin_unlock_irqrestore(&local->cmdlock, flags); 526 527 if (issue && hfa384x_cmd_issue(dev, entry)) 528 ret = -ETIMEDOUT; 529 else 530 ret = 0; 531 532 hostap_cmd_queue_free(local, entry, ret); 533 534 return ret; 535 } 536 537 538 /** 539 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) 540 * @dev: pointer to net_device 541 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 542 * @param0: value for Param0 register 543 * @io_debug_num: I/O debug error number 544 * 545 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). 546 */ 547 static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, 548 int io_debug_num) 549 { 550 int tries; 551 u16 reg; 552 553 /* wait until busy bit is clear; this should always be clear since the 554 * commands are serialized */ 555 tries = HFA384X_CMD_BUSY_TIMEOUT; 556 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 557 tries--; 558 udelay(1); 559 } 560 if (tries == 0) { 561 reg = HFA384X_INW(HFA384X_CMD_OFF); 562 prism2_io_debug_error(dev, io_debug_num); 563 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " 564 "reg=0x%04x\n", dev->name, io_debug_num, reg); 565 return -ETIMEDOUT; 566 } 567 568 /* write command */ 569 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); 570 HFA384X_OUTW(cmd, HFA384X_CMD_OFF); 571 572 return 0; 573 } 574 575 576 /** 577 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion 578 * @dev: pointer to net_device 579 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 580 * @param0: value for Param0 register 581 */ 582 static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) 583 { 584 int res, tries; 585 u16 reg; 586 587 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); 588 if (res) 589 return res; 590 591 /* wait for command completion */ 592 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) 593 tries = HFA384X_DL_COMPL_TIMEOUT; 594 else 595 tries = HFA384X_CMD_COMPL_TIMEOUT; 596 597 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 598 tries > 0) { 599 tries--; 600 udelay(10); 601 } 602 if (tries == 0) { 603 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 604 prism2_io_debug_error(dev, 5); 605 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " 606 "reg=0x%04x\n", dev->name, reg); 607 return -ETIMEDOUT; 608 } 609 610 res = (HFA384X_INW(HFA384X_STATUS_OFF) & 611 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | 612 BIT(8))) >> 8; 613 #ifndef final_version 614 if (res) { 615 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", 616 dev->name, cmd, res); 617 } 618 #endif 619 620 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 621 622 return res; 623 } 624 625 626 /** 627 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion 628 * @dev: pointer to net_device 629 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 630 * @param0: value for Param0 register 631 */ 632 static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, 633 u16 param0) 634 { 635 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); 636 } 637 638 639 /** 640 * prism2_cmd_ev - Prism2 command completion event handler 641 * @dev: pointer to net_device 642 * 643 * Interrupt handler for command completion events. Called by the main 644 * interrupt handler in hardware IRQ context. Read Resp0 and status registers 645 * from the hardware and ACK the event. Depending on the issued command type 646 * either wake up the sleeping process that is waiting for command completion 647 * or call the callback function. Issue the next command, if one is pending. 648 */ 649 static void prism2_cmd_ev(struct net_device *dev) 650 { 651 struct hostap_interface *iface; 652 local_info_t *local; 653 struct hostap_cmd_queue *entry = NULL; 654 655 iface = netdev_priv(dev); 656 local = iface->local; 657 658 spin_lock(&local->cmdlock); 659 if (!list_empty(&local->cmd_queue)) { 660 entry = list_entry(local->cmd_queue.next, 661 struct hostap_cmd_queue, list); 662 refcount_inc(&entry->usecnt); 663 list_del_init(&entry->list); 664 local->cmd_queue_len--; 665 666 if (!entry->issued) { 667 printk(KERN_DEBUG "%s: Command completion event, but " 668 "cmd not issued\n", dev->name); 669 __hostap_cmd_queue_free(local, entry, 1); 670 entry = NULL; 671 } 672 } 673 spin_unlock(&local->cmdlock); 674 675 if (!entry) { 676 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 677 printk(KERN_DEBUG "%s: Command completion event, but no " 678 "pending commands\n", dev->name); 679 return; 680 } 681 682 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); 683 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & 684 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | 685 BIT(9) | BIT(8))) >> 8; 686 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 687 688 /* TODO: rest of the CmdEv handling could be moved to tasklet */ 689 if (entry->type == CMD_SLEEP) { 690 entry->type = CMD_COMPLETED; 691 wake_up_interruptible(&entry->compl); 692 } else if (entry->type == CMD_CALLBACK) { 693 if (entry->callback) 694 entry->callback(dev, entry->context, entry->resp0, 695 entry->res); 696 } else { 697 printk(KERN_DEBUG "%s: Invalid command completion type %d\n", 698 dev->name, entry->type); 699 } 700 hostap_cmd_queue_free(local, entry, 1); 701 702 /* issue next command, if pending */ 703 entry = NULL; 704 spin_lock(&local->cmdlock); 705 if (!list_empty(&local->cmd_queue)) { 706 entry = list_entry(local->cmd_queue.next, 707 struct hostap_cmd_queue, list); 708 if (entry->issuing) { 709 /* hfa384x_cmd() has already started issuing this 710 * command, so do not start here */ 711 entry = NULL; 712 } 713 if (entry) 714 refcount_inc(&entry->usecnt); 715 } 716 spin_unlock(&local->cmdlock); 717 718 if (entry) { 719 /* issue next command; if command issuing fails, remove the 720 * entry from cmd_queue */ 721 int res = hfa384x_cmd_issue(dev, entry); 722 spin_lock(&local->cmdlock); 723 __hostap_cmd_queue_free(local, entry, res); 724 spin_unlock(&local->cmdlock); 725 } 726 } 727 728 729 static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) 730 { 731 int tries = HFA384X_BAP_BUSY_TIMEOUT; 732 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 733 734 while (res && tries > 0) { 735 tries--; 736 udelay(1); 737 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 738 } 739 return res; 740 } 741 742 743 /* Offset must be even */ 744 static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, 745 int offset) 746 { 747 u16 o_off, s_off; 748 int ret = 0; 749 750 if (offset % 2 || bap > 1) 751 return -EINVAL; 752 753 if (bap == BAP1) { 754 o_off = HFA384X_OFFSET1_OFF; 755 s_off = HFA384X_SELECT1_OFF; 756 } else { 757 o_off = HFA384X_OFFSET0_OFF; 758 s_off = HFA384X_SELECT0_OFF; 759 } 760 761 if (hfa384x_wait_offset(dev, o_off)) { 762 prism2_io_debug_error(dev, 7); 763 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", 764 dev->name); 765 ret = -ETIMEDOUT; 766 goto out; 767 } 768 769 HFA384X_OUTW(id, s_off); 770 HFA384X_OUTW(offset, o_off); 771 772 if (hfa384x_wait_offset(dev, o_off)) { 773 prism2_io_debug_error(dev, 8); 774 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", 775 dev->name); 776 ret = -ETIMEDOUT; 777 goto out; 778 } 779 #ifndef final_version 780 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { 781 prism2_io_debug_error(dev, 9); 782 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " 783 "(%d,0x04%x,%d); reg=0x%04x\n", 784 dev->name, bap, id, offset, HFA384X_INW(o_off)); 785 ret = -EINVAL; 786 } 787 #endif 788 789 out: 790 return ret; 791 } 792 793 794 static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, 795 int exact_len) 796 { 797 struct hostap_interface *iface; 798 local_info_t *local; 799 int res, rlen = 0; 800 struct hfa384x_rid_hdr rec; 801 802 iface = netdev_priv(dev); 803 local = iface->local; 804 805 if (local->no_pri) { 806 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " 807 "f/w\n", dev->name, rid, len); 808 return -ENOTTY; /* Well.. not really correct, but return 809 * something unique enough.. */ 810 } 811 812 if ((local->func->card_present && !local->func->card_present(local)) || 813 local->hw_downloading) 814 return -ENODEV; 815 816 res = mutex_lock_interruptible(&local->rid_bap_mtx); 817 if (res) 818 return res; 819 820 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); 821 if (res) { 822 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " 823 "(res=%d, rid=%04x, len=%d)\n", 824 dev->name, res, rid, len); 825 mutex_unlock(&local->rid_bap_mtx); 826 return res; 827 } 828 829 spin_lock_bh(&local->baplock); 830 831 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 832 if (res) 833 goto unlock; 834 835 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); 836 if (res) 837 goto unlock; 838 839 if (le16_to_cpu(rec.len) == 0) { 840 /* RID not available */ 841 res = -ENODATA; 842 goto unlock; 843 } 844 845 rlen = (le16_to_cpu(rec.len) - 1) * 2; 846 if (exact_len && rlen != len) { 847 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " 848 "rid=0x%04x, len=%d (expected %d)\n", 849 dev->name, rid, rlen, len); 850 res = -ENODATA; 851 } 852 853 res = hfa384x_from_bap(dev, BAP0, buf, len); 854 855 unlock: 856 spin_unlock_bh(&local->baplock); 857 mutex_unlock(&local->rid_bap_mtx); 858 859 if (res) { 860 if (res != -ENODATA) 861 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " 862 "len=%d) - failed - res=%d\n", dev->name, rid, 863 len, res); 864 if (res == -ETIMEDOUT) 865 prism2_hw_reset(dev); 866 return res; 867 } 868 869 return rlen; 870 } 871 872 873 static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) 874 { 875 struct hostap_interface *iface; 876 local_info_t *local; 877 struct hfa384x_rid_hdr rec; 878 int res; 879 880 iface = netdev_priv(dev); 881 local = iface->local; 882 883 if (local->no_pri) { 884 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " 885 "f/w\n", dev->name, rid, len); 886 return -ENOTTY; /* Well.. not really correct, but return 887 * something unique enough.. */ 888 } 889 890 if ((local->func->card_present && !local->func->card_present(local)) || 891 local->hw_downloading) 892 return -ENODEV; 893 894 rec.rid = cpu_to_le16(rid); 895 /* RID len in words and +1 for rec.rid */ 896 rec.len = cpu_to_le16(len / 2 + len % 2 + 1); 897 898 res = mutex_lock_interruptible(&local->rid_bap_mtx); 899 if (res) 900 return res; 901 902 spin_lock_bh(&local->baplock); 903 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 904 if (!res) 905 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); 906 if (!res) 907 res = hfa384x_to_bap(dev, BAP0, buf, len); 908 spin_unlock_bh(&local->baplock); 909 910 if (res) { 911 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " 912 "failed - res=%d\n", dev->name, rid, len, res); 913 mutex_unlock(&local->rid_bap_mtx); 914 return res; 915 } 916 917 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); 918 mutex_unlock(&local->rid_bap_mtx); 919 920 if (res) { 921 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " 922 "failed (res=%d, rid=%04x, len=%d)\n", 923 dev->name, res, rid, len); 924 925 if (res == -ETIMEDOUT) 926 prism2_hw_reset(dev); 927 } 928 929 return res; 930 } 931 932 933 static void hfa384x_disable_interrupts(struct net_device *dev) 934 { 935 /* disable interrupts and clear event status */ 936 HFA384X_OUTW(0, HFA384X_INTEN_OFF); 937 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 938 } 939 940 941 static void hfa384x_enable_interrupts(struct net_device *dev) 942 { 943 /* ack pending events and enable interrupts from selected events */ 944 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 945 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 946 } 947 948 949 static void hfa384x_events_no_bap0(struct net_device *dev) 950 { 951 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, 952 HFA384X_INTEN_OFF); 953 } 954 955 956 static void hfa384x_events_all(struct net_device *dev) 957 { 958 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 959 } 960 961 962 static void hfa384x_events_only_cmd(struct net_device *dev) 963 { 964 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); 965 } 966 967 968 static u16 hfa384x_allocate_fid(struct net_device *dev, int len) 969 { 970 u16 fid; 971 unsigned long delay; 972 973 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event 974 * below would be handled like CmdCompl event (sleep here, wake up from 975 * interrupt handler */ 976 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { 977 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", 978 dev->name, len); 979 return 0xffff; 980 } 981 982 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; 983 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && 984 time_before(jiffies, delay)) 985 yield(); 986 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { 987 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); 988 return 0xffff; 989 } 990 991 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); 992 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 993 994 return fid; 995 } 996 997 998 static int prism2_reset_port(struct net_device *dev) 999 { 1000 struct hostap_interface *iface; 1001 local_info_t *local; 1002 int res; 1003 1004 iface = netdev_priv(dev); 1005 local = iface->local; 1006 1007 if (!local->dev_enabled) 1008 return 0; 1009 1010 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, 1011 NULL, NULL); 1012 if (res) 1013 printk(KERN_DEBUG "%s: reset port failed to disable port\n", 1014 dev->name); 1015 else { 1016 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, 1017 NULL, NULL); 1018 if (res) 1019 printk(KERN_DEBUG "%s: reset port failed to enable " 1020 "port\n", dev->name); 1021 } 1022 1023 /* It looks like at least some STA firmware versions reset 1024 * fragmentation threshold back to 2346 after enable command. Restore 1025 * the configured value, if it differs from this default. */ 1026 if (local->fragm_threshold != 2346 && 1027 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1028 local->fragm_threshold)) { 1029 printk(KERN_DEBUG "%s: failed to restore fragmentation " 1030 "threshold (%d) after Port0 enable\n", 1031 dev->name, local->fragm_threshold); 1032 } 1033 1034 /* Some firmwares lose antenna selection settings on reset */ 1035 (void) hostap_set_antsel(local); 1036 1037 return res; 1038 } 1039 1040 1041 static int prism2_get_version_info(struct net_device *dev, u16 rid, 1042 const char *txt) 1043 { 1044 struct hfa384x_comp_ident comp; 1045 struct hostap_interface *iface; 1046 local_info_t *local; 1047 1048 iface = netdev_priv(dev); 1049 local = iface->local; 1050 1051 if (local->no_pri) { 1052 /* PRI f/w not yet available - cannot read RIDs */ 1053 return -1; 1054 } 1055 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { 1056 printk(KERN_DEBUG "Could not get RID for component %s\n", txt); 1057 return -1; 1058 } 1059 1060 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, 1061 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), 1062 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); 1063 return 0; 1064 } 1065 1066 1067 static int prism2_setup_rids(struct net_device *dev) 1068 { 1069 struct hostap_interface *iface; 1070 local_info_t *local; 1071 __le16 tmp; 1072 int ret = 0; 1073 1074 iface = netdev_priv(dev); 1075 local = iface->local; 1076 1077 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); 1078 1079 if (!local->fw_ap) { 1080 u16 tmp1 = hostap_get_porttype(local); 1081 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); 1082 if (ret) { 1083 printk("%s: Port type setting to %d failed\n", 1084 dev->name, tmp1); 1085 goto fail; 1086 } 1087 } 1088 1089 /* Setting SSID to empty string seems to kill the card in Host AP mode 1090 */ 1091 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { 1092 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, 1093 local->essid); 1094 if (ret) { 1095 printk("%s: AP own SSID setting failed\n", dev->name); 1096 goto fail; 1097 } 1098 } 1099 1100 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, 1101 PRISM2_DATA_MAXLEN); 1102 if (ret) { 1103 printk("%s: MAC data length setting to %d failed\n", 1104 dev->name, PRISM2_DATA_MAXLEN); 1105 goto fail; 1106 } 1107 1108 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { 1109 printk("%s: Channel list read failed\n", dev->name); 1110 ret = -EINVAL; 1111 goto fail; 1112 } 1113 local->channel_mask = le16_to_cpu(tmp); 1114 1115 if (local->channel < 1 || local->channel > 14 || 1116 !(local->channel_mask & (1 << (local->channel - 1)))) { 1117 printk(KERN_WARNING "%s: Channel setting out of range " 1118 "(%d)!\n", dev->name, local->channel); 1119 ret = -EBUSY; 1120 goto fail; 1121 } 1122 1123 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); 1124 if (ret) { 1125 printk("%s: Channel setting to %d failed\n", 1126 dev->name, local->channel); 1127 goto fail; 1128 } 1129 1130 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, 1131 local->beacon_int); 1132 if (ret) { 1133 printk("%s: Beacon interval setting to %d failed\n", 1134 dev->name, local->beacon_int); 1135 /* this may fail with Symbol/Lucent firmware */ 1136 if (ret == -ETIMEDOUT) 1137 goto fail; 1138 } 1139 1140 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, 1141 local->dtim_period); 1142 if (ret) { 1143 printk("%s: DTIM period setting to %d failed\n", 1144 dev->name, local->dtim_period); 1145 /* this may fail with Symbol/Lucent firmware */ 1146 if (ret == -ETIMEDOUT) 1147 goto fail; 1148 } 1149 1150 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, 1151 local->is_promisc); 1152 if (ret) 1153 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", 1154 dev->name, local->is_promisc); 1155 1156 if (!local->fw_ap) { 1157 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, 1158 local->essid); 1159 if (ret) { 1160 printk("%s: Desired SSID setting failed\n", dev->name); 1161 goto fail; 1162 } 1163 } 1164 1165 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and 1166 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic 1167 * rates */ 1168 if (local->tx_rate_control == 0) { 1169 local->tx_rate_control = 1170 HFA384X_RATES_1MBPS | 1171 HFA384X_RATES_2MBPS | 1172 HFA384X_RATES_5MBPS | 1173 HFA384X_RATES_11MBPS; 1174 } 1175 if (local->basic_rates == 0) 1176 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; 1177 1178 if (!local->fw_ap) { 1179 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, 1180 local->tx_rate_control); 1181 if (ret) { 1182 printk("%s: TXRateControl setting to %d failed\n", 1183 dev->name, local->tx_rate_control); 1184 goto fail; 1185 } 1186 1187 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, 1188 local->tx_rate_control); 1189 if (ret) { 1190 printk("%s: cnfSupportedRates setting to %d failed\n", 1191 dev->name, local->tx_rate_control); 1192 } 1193 1194 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, 1195 local->basic_rates); 1196 if (ret) { 1197 printk("%s: cnfBasicRates setting to %d failed\n", 1198 dev->name, local->basic_rates); 1199 } 1200 1201 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); 1202 if (ret) { 1203 printk("%s: Create IBSS setting to 1 failed\n", 1204 dev->name); 1205 } 1206 } 1207 1208 if (local->name_set) 1209 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, 1210 local->name); 1211 1212 if (hostap_set_encryption(local)) { 1213 printk(KERN_INFO "%s: could not configure encryption\n", 1214 dev->name); 1215 } 1216 1217 (void) hostap_set_antsel(local); 1218 1219 if (hostap_set_roaming(local)) { 1220 printk(KERN_INFO "%s: could not set host roaming\n", 1221 dev->name); 1222 } 1223 1224 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && 1225 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) 1226 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", 1227 dev->name, local->enh_sec); 1228 1229 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently 1230 * not working correctly (last seven counters report bogus values). 1231 * This has been fixed in 0.8.2, so enable 32-bit tallies only 1232 * beginning with that firmware version. Another bug fix for 32-bit 1233 * tallies in 1.4.0; should 16-bit tallies be used for some other 1234 * versions, too? */ 1235 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { 1236 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { 1237 printk(KERN_INFO "%s: cnfThirty2Tally setting " 1238 "failed\n", dev->name); 1239 local->tallies32 = 0; 1240 } else 1241 local->tallies32 = 1; 1242 } else 1243 local->tallies32 = 0; 1244 1245 hostap_set_auth_algs(local); 1246 1247 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1248 local->fragm_threshold)) { 1249 printk(KERN_INFO "%s: setting FragmentationThreshold to %d " 1250 "failed\n", dev->name, local->fragm_threshold); 1251 } 1252 1253 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, 1254 local->rts_threshold)) { 1255 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", 1256 dev->name, local->rts_threshold); 1257 } 1258 1259 if (local->manual_retry_count >= 0 && 1260 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, 1261 local->manual_retry_count)) { 1262 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", 1263 dev->name, local->manual_retry_count); 1264 } 1265 1266 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && 1267 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { 1268 local->rssi_to_dBm = le16_to_cpu(tmp); 1269 } 1270 1271 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && 1272 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { 1273 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", 1274 dev->name); 1275 } 1276 1277 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && 1278 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, 1279 local->generic_elem, local->generic_elem_len)) { 1280 printk(KERN_INFO "%s: setting genericElement failed\n", 1281 dev->name); 1282 } 1283 1284 fail: 1285 return ret; 1286 } 1287 1288 1289 static int prism2_hw_init(struct net_device *dev, int initial) 1290 { 1291 struct hostap_interface *iface; 1292 local_info_t *local; 1293 int ret, first = 1; 1294 unsigned long start, delay; 1295 1296 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); 1297 1298 iface = netdev_priv(dev); 1299 local = iface->local; 1300 1301 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); 1302 1303 init: 1304 /* initialize HFA 384x */ 1305 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); 1306 if (ret) { 1307 printk(KERN_INFO "%s: first command failed - assuming card " 1308 "does not have primary firmware\n", dev_info); 1309 } 1310 1311 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1312 /* EvStat has Cmd bit set in some cases, so retry once if no 1313 * wait was needed */ 1314 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1315 printk(KERN_DEBUG "%s: init command completed too quickly - " 1316 "retrying\n", dev->name); 1317 first = 0; 1318 goto init; 1319 } 1320 1321 start = jiffies; 1322 delay = jiffies + HFA384X_INIT_TIMEOUT; 1323 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 1324 time_before(jiffies, delay)) 1325 yield(); 1326 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1327 printk(KERN_DEBUG "%s: assuming no Primary image in " 1328 "flash - card initialization not completed\n", 1329 dev_info); 1330 local->no_pri = 1; 1331 #ifdef PRISM2_DOWNLOAD_SUPPORT 1332 if (local->sram_type == -1) 1333 local->sram_type = prism2_get_ram_size(local); 1334 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1335 return 1; 1336 } 1337 local->no_pri = 0; 1338 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", 1339 (jiffies - start) * 1000 / HZ); 1340 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1341 return 0; 1342 } 1343 1344 1345 static int prism2_hw_init2(struct net_device *dev, int initial) 1346 { 1347 struct hostap_interface *iface; 1348 local_info_t *local; 1349 int i; 1350 1351 iface = netdev_priv(dev); 1352 local = iface->local; 1353 1354 #ifdef PRISM2_DOWNLOAD_SUPPORT 1355 kfree(local->pda); 1356 if (local->no_pri) 1357 local->pda = NULL; 1358 else 1359 local->pda = prism2_read_pda(dev); 1360 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1361 1362 hfa384x_disable_interrupts(dev); 1363 1364 #ifndef final_version 1365 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); 1366 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 1367 printk("SWSUPPORT0 write/read failed: %04X != %04X\n", 1368 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); 1369 goto failed; 1370 } 1371 #endif 1372 1373 if (initial || local->pri_only) { 1374 hfa384x_events_only_cmd(dev); 1375 /* get card version information */ 1376 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || 1377 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { 1378 hfa384x_disable_interrupts(dev); 1379 goto failed; 1380 } 1381 1382 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { 1383 printk(KERN_DEBUG "%s: Failed to read STA f/w version " 1384 "- only Primary f/w present\n", dev->name); 1385 local->pri_only = 1; 1386 return 0; 1387 } 1388 local->pri_only = 0; 1389 hfa384x_disable_interrupts(dev); 1390 } 1391 1392 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and 1393 * enable interrupts before this. This would also require some sort of 1394 * sleeping AllocEv waiting */ 1395 1396 /* allocate TX FIDs */ 1397 local->txfid_len = PRISM2_TXFID_LEN; 1398 for (i = 0; i < PRISM2_TXFID_COUNT; i++) { 1399 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); 1400 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { 1401 local->txfid[i] = hfa384x_allocate_fid(dev, 1600); 1402 if (local->txfid[i] != 0xffff) { 1403 printk(KERN_DEBUG "%s: Using shorter TX FID " 1404 "(1600 bytes)\n", dev->name); 1405 local->txfid_len = 1600; 1406 } 1407 } 1408 if (local->txfid[i] == 0xffff) 1409 goto failed; 1410 local->intransmitfid[i] = PRISM2_TXFID_EMPTY; 1411 } 1412 1413 hfa384x_events_only_cmd(dev); 1414 1415 if (initial) { 1416 struct list_head *ptr; 1417 prism2_check_sta_fw_version(local); 1418 1419 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, 1420 dev->dev_addr, 6, 1) < 0) { 1421 printk("%s: could not get own MAC address\n", 1422 dev->name); 1423 } 1424 list_for_each(ptr, &local->hostap_interfaces) { 1425 iface = list_entry(ptr, struct hostap_interface, list); 1426 eth_hw_addr_inherit(iface->dev, dev); 1427 } 1428 } else if (local->fw_ap) 1429 prism2_check_sta_fw_version(local); 1430 1431 prism2_setup_rids(dev); 1432 1433 /* MAC is now configured, but port 0 is not yet enabled */ 1434 return 0; 1435 1436 failed: 1437 if (!local->no_pri) 1438 printk(KERN_WARNING "%s: Initialization failed\n", dev_info); 1439 return 1; 1440 } 1441 1442 1443 static int prism2_hw_enable(struct net_device *dev, int initial) 1444 { 1445 struct hostap_interface *iface; 1446 local_info_t *local; 1447 int was_resetting; 1448 1449 iface = netdev_priv(dev); 1450 local = iface->local; 1451 was_resetting = local->hw_resetting; 1452 1453 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { 1454 printk("%s: MAC port 0 enabling failed\n", dev->name); 1455 return 1; 1456 } 1457 1458 local->hw_ready = 1; 1459 local->hw_reset_tries = 0; 1460 local->hw_resetting = 0; 1461 hfa384x_enable_interrupts(dev); 1462 1463 /* at least D-Link DWL-650 seems to require additional port reset 1464 * before it starts acting as an AP, so reset port automatically 1465 * here just in case */ 1466 if (initial && prism2_reset_port(dev)) { 1467 printk("%s: MAC port 0 resetting failed\n", dev->name); 1468 return 1; 1469 } 1470 1471 if (was_resetting && netif_queue_stopped(dev)) { 1472 /* If hw_reset() was called during pending transmit, netif 1473 * queue was stopped. Wake it up now since the wlan card has 1474 * been resetted. */ 1475 netif_wake_queue(dev); 1476 } 1477 1478 return 0; 1479 } 1480 1481 1482 static int prism2_hw_config(struct net_device *dev, int initial) 1483 { 1484 struct hostap_interface *iface; 1485 local_info_t *local; 1486 1487 iface = netdev_priv(dev); 1488 local = iface->local; 1489 1490 if (local->hw_downloading) 1491 return 1; 1492 1493 if (prism2_hw_init(dev, initial)) { 1494 return local->no_pri ? 0 : 1; 1495 } 1496 1497 if (prism2_hw_init2(dev, initial)) 1498 return 1; 1499 1500 /* Enable firmware if secondary image is loaded and at least one of the 1501 * netdevices is up. */ 1502 if (!local->pri_only && 1503 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { 1504 if (!local->dev_enabled) 1505 prism2_callback(local, PRISM2_CALLBACK_ENABLE); 1506 local->dev_enabled = 1; 1507 return prism2_hw_enable(dev, initial); 1508 } 1509 1510 return 0; 1511 } 1512 1513 1514 static void prism2_hw_shutdown(struct net_device *dev, int no_disable) 1515 { 1516 struct hostap_interface *iface; 1517 local_info_t *local; 1518 1519 iface = netdev_priv(dev); 1520 local = iface->local; 1521 1522 /* Allow only command completion events during disable */ 1523 hfa384x_events_only_cmd(dev); 1524 1525 local->hw_ready = 0; 1526 if (local->dev_enabled) 1527 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 1528 local->dev_enabled = 0; 1529 1530 if (local->func->card_present && !local->func->card_present(local)) { 1531 printk(KERN_DEBUG "%s: card already removed or not configured " 1532 "during shutdown\n", dev->name); 1533 return; 1534 } 1535 1536 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && 1537 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) 1538 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); 1539 1540 hfa384x_disable_interrupts(dev); 1541 1542 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) 1543 hfa384x_events_only_cmd(dev); 1544 else 1545 prism2_clear_cmd_queue(local); 1546 } 1547 1548 1549 static void prism2_hw_reset(struct net_device *dev) 1550 { 1551 struct hostap_interface *iface; 1552 local_info_t *local; 1553 1554 #if 0 1555 static long last_reset = 0; 1556 1557 /* do not reset card more than once per second to avoid ending up in a 1558 * busy loop resetting the card */ 1559 if (time_before_eq(jiffies, last_reset + HZ)) 1560 return; 1561 last_reset = jiffies; 1562 #endif 1563 1564 iface = netdev_priv(dev); 1565 local = iface->local; 1566 1567 if (in_interrupt()) { 1568 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " 1569 "in interrupt context\n", dev->name); 1570 return; 1571 } 1572 1573 if (local->hw_downloading) 1574 return; 1575 1576 if (local->hw_resetting) { 1577 printk(KERN_WARNING "%s: %s: already resetting card - " 1578 "ignoring reset request\n", dev_info, dev->name); 1579 return; 1580 } 1581 1582 local->hw_reset_tries++; 1583 if (local->hw_reset_tries > 10) { 1584 printk(KERN_WARNING "%s: too many reset tries, skipping\n", 1585 dev->name); 1586 return; 1587 } 1588 1589 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); 1590 hfa384x_disable_interrupts(dev); 1591 local->hw_resetting = 1; 1592 if (local->func->cor_sreset) { 1593 /* Host system seems to hang in some cases with high traffic 1594 * load or shared interrupts during COR sreset. Disable shared 1595 * interrupts during reset to avoid these crashes. COS sreset 1596 * takes quite a long time, so it is unfortunate that this 1597 * seems to be needed. Anyway, I do not know of any better way 1598 * of avoiding the crash. */ 1599 disable_irq(dev->irq); 1600 local->func->cor_sreset(local); 1601 enable_irq(dev->irq); 1602 } 1603 prism2_hw_shutdown(dev, 1); 1604 prism2_hw_config(dev, 0); 1605 local->hw_resetting = 0; 1606 1607 #ifdef PRISM2_DOWNLOAD_SUPPORT 1608 if (local->dl_pri) { 1609 printk(KERN_DEBUG "%s: persistent download of primary " 1610 "firmware\n", dev->name); 1611 if (prism2_download_genesis(local, local->dl_pri) < 0) 1612 printk(KERN_WARNING "%s: download (PRI) failed\n", 1613 dev->name); 1614 } 1615 1616 if (local->dl_sec) { 1617 printk(KERN_DEBUG "%s: persistent download of secondary " 1618 "firmware\n", dev->name); 1619 if (prism2_download_volatile(local, local->dl_sec) < 0) 1620 printk(KERN_WARNING "%s: download (SEC) failed\n", 1621 dev->name); 1622 } 1623 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1624 1625 /* TODO: restore beacon TIM bits for STAs that have buffered frames */ 1626 } 1627 1628 1629 static void prism2_schedule_reset(local_info_t *local) 1630 { 1631 schedule_work(&local->reset_queue); 1632 } 1633 1634 1635 /* Called only as scheduled task after noticing card timeout in interrupt 1636 * context */ 1637 static void handle_reset_queue(struct work_struct *work) 1638 { 1639 local_info_t *local = container_of(work, local_info_t, reset_queue); 1640 1641 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); 1642 prism2_hw_reset(local->dev); 1643 1644 if (netif_queue_stopped(local->dev)) { 1645 int i; 1646 1647 for (i = 0; i < PRISM2_TXFID_COUNT; i++) 1648 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { 1649 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " 1650 "wake up queue\n"); 1651 netif_wake_queue(local->dev); 1652 break; 1653 } 1654 } 1655 } 1656 1657 1658 static int prism2_get_txfid_idx(local_info_t *local) 1659 { 1660 int idx, end; 1661 unsigned long flags; 1662 1663 spin_lock_irqsave(&local->txfidlock, flags); 1664 end = idx = local->next_txfid; 1665 do { 1666 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1667 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; 1668 spin_unlock_irqrestore(&local->txfidlock, flags); 1669 return idx; 1670 } 1671 idx++; 1672 if (idx >= PRISM2_TXFID_COUNT) 1673 idx = 0; 1674 } while (idx != end); 1675 spin_unlock_irqrestore(&local->txfidlock, flags); 1676 1677 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " 1678 "packet dropped\n"); 1679 local->dev->stats.tx_dropped++; 1680 1681 return -1; 1682 } 1683 1684 1685 /* Called only from hardware IRQ */ 1686 static void prism2_transmit_cb(struct net_device *dev, long context, 1687 u16 resp0, u16 res) 1688 { 1689 struct hostap_interface *iface; 1690 local_info_t *local; 1691 int idx = (int) context; 1692 1693 iface = netdev_priv(dev); 1694 local = iface->local; 1695 1696 if (res) { 1697 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", 1698 dev->name, res); 1699 return; 1700 } 1701 1702 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { 1703 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " 1704 "idx=%d\n", dev->name, idx); 1705 return; 1706 } 1707 1708 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1709 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " 1710 "with no pending transmit\n", dev->name); 1711 } 1712 1713 if (netif_queue_stopped(dev)) { 1714 /* ready for next TX, so wake up queue that was stopped in 1715 * prism2_transmit() */ 1716 netif_wake_queue(dev); 1717 } 1718 1719 spin_lock(&local->txfidlock); 1720 1721 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid 1722 * will be automatically allocated for the next TX frame */ 1723 local->intransmitfid[idx] = resp0; 1724 1725 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " 1726 "resp0=0x%04x, transmit_txfid=0x%04x\n", 1727 dev->name, idx, local->txfid[idx], 1728 resp0, local->intransmitfid[local->next_txfid]); 1729 1730 idx++; 1731 if (idx >= PRISM2_TXFID_COUNT) 1732 idx = 0; 1733 local->next_txfid = idx; 1734 1735 /* check if all TX buffers are occupied */ 1736 do { 1737 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1738 spin_unlock(&local->txfidlock); 1739 return; 1740 } 1741 idx++; 1742 if (idx >= PRISM2_TXFID_COUNT) 1743 idx = 0; 1744 } while (idx != local->next_txfid); 1745 spin_unlock(&local->txfidlock); 1746 1747 /* no empty TX buffers, stop queue */ 1748 netif_stop_queue(dev); 1749 } 1750 1751 1752 /* Called only from software IRQ if PCI bus master is not used (with bus master 1753 * this can be called both from software and hardware IRQ) */ 1754 static int prism2_transmit(struct net_device *dev, int idx) 1755 { 1756 struct hostap_interface *iface; 1757 local_info_t *local; 1758 int res; 1759 1760 iface = netdev_priv(dev); 1761 local = iface->local; 1762 1763 /* The driver tries to stop netif queue so that there would not be 1764 * more than one attempt to transmit frames going on; check that this 1765 * is really the case */ 1766 1767 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1768 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " 1769 "when previous TX was pending\n", dev->name); 1770 return -1; 1771 } 1772 1773 /* stop the queue for the time that transmit is pending */ 1774 netif_stop_queue(dev); 1775 1776 /* transmit packet */ 1777 res = hfa384x_cmd_callback( 1778 dev, 1779 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, 1780 local->txfid[idx], 1781 prism2_transmit_cb, (long) idx); 1782 1783 if (res) { 1784 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " 1785 "failed (res=%d)\n", dev->name, res); 1786 dev->stats.tx_dropped++; 1787 netif_wake_queue(dev); 1788 return -1; 1789 } 1790 netif_trans_update(dev); 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 */ 1803 static 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 (ieee80211_is_data(txdesc.frame_control) && 1835 ieee80211_has_a4(txdesc.frame_control) && 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_le32(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 1884 fail: 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 bit 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 1897 static 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) */ 1929 static 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 hfa384x_rx_frame rxdesc; 1935 struct sk_buff *skb = NULL; 1936 1937 prism2_callback(local, PRISM2_CALLBACK_RX_START); 1938 1939 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); 1940 #ifndef final_version 1941 if (rxfid == 0) { 1942 rxfid = HFA384X_INW(HFA384X_RXFID_OFF); 1943 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", 1944 rxfid); 1945 if (rxfid == 0) { 1946 schedule_work(&local->reset_queue); 1947 goto rx_dropped; 1948 } 1949 /* try to continue with the new rxfid value */ 1950 } 1951 #endif 1952 1953 spin_lock(&local->baplock); 1954 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); 1955 if (!res) 1956 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); 1957 1958 if (res) { 1959 spin_unlock(&local->baplock); 1960 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, 1961 res); 1962 if (res == -ETIMEDOUT) { 1963 schedule_work(&local->reset_queue); 1964 } 1965 goto rx_dropped; 1966 } 1967 1968 len = le16_to_cpu(rxdesc.data_len); 1969 hdr_len = sizeof(rxdesc); 1970 status = le16_to_cpu(rxdesc.status); 1971 macport = (status >> 8) & 0x07; 1972 1973 /* Drop frames with too large reported payload length. Monitor mode 1974 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and 1975 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for 1976 * macport 7 */ 1977 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { 1978 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { 1979 if (len >= (u16) -14) { 1980 hdr_len -= 65535 - len; 1981 hdr_len--; 1982 } 1983 len = 0; 1984 } else { 1985 spin_unlock(&local->baplock); 1986 printk(KERN_DEBUG "%s: Received frame with invalid " 1987 "length 0x%04x\n", dev->name, len); 1988 hostap_dump_rx_header(dev->name, &rxdesc); 1989 goto rx_dropped; 1990 } 1991 } 1992 1993 skb = dev_alloc_skb(len + hdr_len); 1994 if (!skb) { 1995 spin_unlock(&local->baplock); 1996 printk(KERN_DEBUG "%s: RX failed to allocate skb\n", 1997 dev->name); 1998 goto rx_dropped; 1999 } 2000 skb->dev = dev; 2001 skb_put_data(skb, &rxdesc, hdr_len); 2002 2003 if (len > 0) 2004 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); 2005 spin_unlock(&local->baplock); 2006 if (res) { 2007 printk(KERN_DEBUG "%s: RX failed to read " 2008 "frame data\n", dev->name); 2009 goto rx_dropped; 2010 } 2011 2012 skb_queue_tail(&local->rx_list, skb); 2013 tasklet_schedule(&local->rx_tasklet); 2014 2015 rx_exit: 2016 prism2_callback(local, PRISM2_CALLBACK_RX_END); 2017 if (!rx_pending) { 2018 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); 2019 } 2020 2021 return; 2022 2023 rx_dropped: 2024 dev->stats.rx_dropped++; 2025 if (skb) 2026 dev_kfree_skb(skb); 2027 goto rx_exit; 2028 } 2029 2030 2031 /* Called only as a tasklet (software IRQ) */ 2032 static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) 2033 { 2034 struct hfa384x_rx_frame *rxdesc; 2035 struct net_device *dev = skb->dev; 2036 struct hostap_80211_rx_status stats; 2037 int hdrlen, rx_hdrlen; 2038 2039 rx_hdrlen = sizeof(*rxdesc); 2040 if (skb->len < sizeof(*rxdesc)) { 2041 /* Allow monitor mode to receive shorter frames */ 2042 if (local->iw_mode == IW_MODE_MONITOR && 2043 skb->len >= sizeof(*rxdesc) - 30) { 2044 rx_hdrlen = skb->len; 2045 } else { 2046 dev_kfree_skb(skb); 2047 return; 2048 } 2049 } 2050 2051 rxdesc = (struct hfa384x_rx_frame *) skb->data; 2052 2053 if (local->frame_dump & PRISM2_DUMP_RX_HDR && 2054 skb->len >= sizeof(*rxdesc)) 2055 hostap_dump_rx_header(dev->name, rxdesc); 2056 2057 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && 2058 (!local->monitor_allow_fcserr || 2059 local->iw_mode != IW_MODE_MONITOR)) 2060 goto drop; 2061 2062 if (skb->len > PRISM2_DATA_MAXLEN) { 2063 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", 2064 dev->name, skb->len, PRISM2_DATA_MAXLEN); 2065 goto drop; 2066 } 2067 2068 stats.mac_time = le32_to_cpu(rxdesc->time); 2069 stats.signal = rxdesc->signal - local->rssi_to_dBm; 2070 stats.noise = rxdesc->silence - local->rssi_to_dBm; 2071 stats.rate = rxdesc->rate; 2072 2073 /* Convert Prism2 RX structure into IEEE 802.11 header */ 2074 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); 2075 if (hdrlen > rx_hdrlen) 2076 hdrlen = rx_hdrlen; 2077 2078 memmove(skb_pull(skb, rx_hdrlen - hdrlen), 2079 &rxdesc->frame_control, hdrlen); 2080 2081 hostap_80211_rx(dev, skb, &stats); 2082 return; 2083 2084 drop: 2085 dev_kfree_skb(skb); 2086 } 2087 2088 2089 /* Called only as a tasklet (software IRQ) */ 2090 static void hostap_rx_tasklet(unsigned long data) 2091 { 2092 local_info_t *local = (local_info_t *) data; 2093 struct sk_buff *skb; 2094 2095 while ((skb = skb_dequeue(&local->rx_list)) != NULL) 2096 hostap_rx_skb(local, skb); 2097 } 2098 2099 2100 /* Called only from hardware IRQ */ 2101 static void prism2_alloc_ev(struct net_device *dev) 2102 { 2103 struct hostap_interface *iface; 2104 local_info_t *local; 2105 int idx; 2106 u16 fid; 2107 2108 iface = netdev_priv(dev); 2109 local = iface->local; 2110 2111 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); 2112 2113 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); 2114 2115 spin_lock(&local->txfidlock); 2116 idx = local->next_alloc; 2117 2118 do { 2119 if (local->txfid[idx] == fid) { 2120 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", 2121 idx); 2122 2123 #ifndef final_version 2124 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) 2125 printk("Already released txfid found at idx " 2126 "%d\n", idx); 2127 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) 2128 printk("Already reserved txfid found at idx " 2129 "%d\n", idx); 2130 #endif 2131 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 2132 idx++; 2133 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : 2134 idx; 2135 2136 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && 2137 netif_queue_stopped(dev)) 2138 netif_wake_queue(dev); 2139 2140 spin_unlock(&local->txfidlock); 2141 return; 2142 } 2143 2144 idx++; 2145 if (idx >= PRISM2_TXFID_COUNT) 2146 idx = 0; 2147 } while (idx != local->next_alloc); 2148 2149 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " 2150 "read 0x%04x) for alloc event\n", dev->name, fid, 2151 HFA384X_INW(HFA384X_ALLOCFID_OFF)); 2152 printk(KERN_DEBUG "TXFIDs:"); 2153 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) 2154 printk(" %04x[%04x]", local->txfid[idx], 2155 local->intransmitfid[idx]); 2156 printk("\n"); 2157 spin_unlock(&local->txfidlock); 2158 2159 /* FIX: should probably schedule reset; reference to one txfid was lost 2160 * completely.. Bad things will happen if we run out of txfids 2161 * Actually, this will cause netdev watchdog to notice TX timeout and 2162 * then card reset after all txfids have been leaked. */ 2163 } 2164 2165 2166 /* Called only as a tasklet (software IRQ) */ 2167 static void hostap_tx_callback(local_info_t *local, 2168 struct hfa384x_tx_frame *txdesc, int ok, 2169 char *payload) 2170 { 2171 u16 sw_support, hdrlen, len; 2172 struct sk_buff *skb; 2173 struct hostap_tx_callback_info *cb; 2174 2175 /* Make sure that frame was from us. */ 2176 if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { 2177 printk(KERN_DEBUG "%s: TX callback - foreign frame\n", 2178 local->dev->name); 2179 return; 2180 } 2181 2182 sw_support = le32_to_cpu(txdesc->sw_support); 2183 2184 spin_lock(&local->lock); 2185 cb = local->tx_callback; 2186 while (cb != NULL && cb->idx != sw_support) 2187 cb = cb->next; 2188 spin_unlock(&local->lock); 2189 2190 if (cb == NULL) { 2191 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", 2192 local->dev->name, sw_support); 2193 return; 2194 } 2195 2196 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2197 len = le16_to_cpu(txdesc->data_len); 2198 skb = dev_alloc_skb(hdrlen + len); 2199 if (skb == NULL) { 2200 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " 2201 "skb\n", local->dev->name); 2202 return; 2203 } 2204 2205 skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen); 2206 if (payload) 2207 skb_put_data(skb, payload, len); 2208 2209 skb->dev = local->dev; 2210 skb_reset_mac_header(skb); 2211 2212 cb->func(skb, ok, cb->data); 2213 } 2214 2215 2216 /* Called only as a tasklet (software IRQ) */ 2217 static int hostap_tx_compl_read(local_info_t *local, int error, 2218 struct hfa384x_tx_frame *txdesc, 2219 char **payload) 2220 { 2221 u16 fid, len; 2222 int res, ret = 0; 2223 struct net_device *dev = local->dev; 2224 2225 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); 2226 2227 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); 2228 2229 spin_lock(&local->baplock); 2230 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2231 if (!res) 2232 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); 2233 if (res) { 2234 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " 2235 "read txdesc\n", dev->name, error, fid); 2236 if (res == -ETIMEDOUT) { 2237 schedule_work(&local->reset_queue); 2238 } 2239 ret = -1; 2240 goto fail; 2241 } 2242 if (txdesc->sw_support) { 2243 len = le16_to_cpu(txdesc->data_len); 2244 if (len < PRISM2_DATA_MAXLEN) { 2245 *payload = kmalloc(len, GFP_ATOMIC); 2246 if (*payload == NULL || 2247 hfa384x_from_bap(dev, BAP0, *payload, len)) { 2248 PDEBUG(DEBUG_EXTRA, "%s: could not read TX " 2249 "frame payload\n", dev->name); 2250 kfree(*payload); 2251 *payload = NULL; 2252 ret = -1; 2253 goto fail; 2254 } 2255 } 2256 } 2257 2258 fail: 2259 spin_unlock(&local->baplock); 2260 2261 return ret; 2262 } 2263 2264 2265 /* Called only as a tasklet (software IRQ) */ 2266 static void prism2_tx_ev(local_info_t *local) 2267 { 2268 struct net_device *dev = local->dev; 2269 char *payload = NULL; 2270 struct hfa384x_tx_frame txdesc; 2271 2272 if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) 2273 goto fail; 2274 2275 if (local->frame_dump & PRISM2_DUMP_TX_HDR) { 2276 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " 2277 "retry_count=%d tx_rate=%d seq_ctrl=%d " 2278 "duration_id=%d\n", 2279 dev->name, le16_to_cpu(txdesc.status), 2280 txdesc.retry_count, txdesc.tx_rate, 2281 le16_to_cpu(txdesc.seq_ctrl), 2282 le16_to_cpu(txdesc.duration_id)); 2283 } 2284 2285 if (txdesc.sw_support) 2286 hostap_tx_callback(local, &txdesc, 1, payload); 2287 kfree(payload); 2288 2289 fail: 2290 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); 2291 } 2292 2293 2294 /* Called only as a tasklet (software IRQ) */ 2295 static void hostap_sta_tx_exc_tasklet(unsigned long data) 2296 { 2297 local_info_t *local = (local_info_t *) data; 2298 struct sk_buff *skb; 2299 2300 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { 2301 struct hfa384x_tx_frame *txdesc = 2302 (struct hfa384x_tx_frame *) skb->data; 2303 2304 if (skb->len >= sizeof(*txdesc)) { 2305 /* Convert Prism2 RX structure into IEEE 802.11 header 2306 */ 2307 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2308 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), 2309 &txdesc->frame_control, hdrlen); 2310 2311 hostap_handle_sta_tx_exc(local, skb); 2312 } 2313 dev_kfree_skb(skb); 2314 } 2315 } 2316 2317 2318 /* Called only as a tasklet (software IRQ) */ 2319 static void prism2_txexc(local_info_t *local) 2320 { 2321 struct net_device *dev = local->dev; 2322 u16 status, fc; 2323 int show_dump, res; 2324 char *payload = NULL; 2325 struct hfa384x_tx_frame txdesc; 2326 2327 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; 2328 dev->stats.tx_errors++; 2329 2330 res = hostap_tx_compl_read(local, 1, &txdesc, &payload); 2331 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); 2332 if (res) 2333 return; 2334 2335 status = le16_to_cpu(txdesc.status); 2336 2337 /* We produce a TXDROP event only for retry or lifetime 2338 * exceeded, because that's the only status that really mean 2339 * that this particular node went away. 2340 * Other errors means that *we* screwed up. - Jean II */ 2341 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) 2342 { 2343 union iwreq_data wrqu; 2344 2345 /* Copy 802.11 dest address. */ 2346 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); 2347 wrqu.addr.sa_family = ARPHRD_ETHER; 2348 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); 2349 } else 2350 show_dump = 1; 2351 2352 if (local->iw_mode == IW_MODE_MASTER || 2353 local->iw_mode == IW_MODE_REPEAT || 2354 local->wds_type & HOSTAP_WDS_AP_CLIENT) { 2355 struct sk_buff *skb; 2356 skb = dev_alloc_skb(sizeof(txdesc)); 2357 if (skb) { 2358 skb_put_data(skb, &txdesc, sizeof(txdesc)); 2359 skb_queue_tail(&local->sta_tx_exc_list, skb); 2360 tasklet_schedule(&local->sta_tx_exc_tasklet); 2361 } 2362 } 2363 2364 if (txdesc.sw_support) 2365 hostap_tx_callback(local, &txdesc, 0, payload); 2366 kfree(payload); 2367 2368 if (!show_dump) 2369 return; 2370 2371 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" 2372 " tx_control=%04x\n", 2373 dev->name, status, 2374 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", 2375 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", 2376 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", 2377 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", 2378 le16_to_cpu(txdesc.tx_control)); 2379 2380 fc = le16_to_cpu(txdesc.frame_control); 2381 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " 2382 "(%s%s%s::%d%s%s)\n", 2383 txdesc.retry_count, txdesc.tx_rate, fc, 2384 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", 2385 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", 2386 ieee80211_is_data(txdesc.frame_control) ? "Data" : "", 2387 (fc & IEEE80211_FCTL_STYPE) >> 4, 2388 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", 2389 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); 2390 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", 2391 txdesc.addr1, txdesc.addr2, 2392 txdesc.addr3, txdesc.addr4); 2393 } 2394 2395 2396 /* Called only as a tasklet (software IRQ) */ 2397 static void hostap_info_tasklet(unsigned long data) 2398 { 2399 local_info_t *local = (local_info_t *) data; 2400 struct sk_buff *skb; 2401 2402 while ((skb = skb_dequeue(&local->info_list)) != NULL) { 2403 hostap_info_process(local, skb); 2404 dev_kfree_skb(skb); 2405 } 2406 } 2407 2408 2409 /* Called only as a tasklet (software IRQ) */ 2410 static void prism2_info(local_info_t *local) 2411 { 2412 struct net_device *dev = local->dev; 2413 u16 fid; 2414 int res, left; 2415 struct hfa384x_info_frame info; 2416 struct sk_buff *skb; 2417 2418 fid = HFA384X_INW(HFA384X_INFOFID_OFF); 2419 2420 spin_lock(&local->baplock); 2421 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2422 if (!res) 2423 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); 2424 if (res) { 2425 spin_unlock(&local->baplock); 2426 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", 2427 fid); 2428 if (res == -ETIMEDOUT) { 2429 schedule_work(&local->reset_queue); 2430 } 2431 goto out; 2432 } 2433 2434 left = (le16_to_cpu(info.len) - 1) * 2; 2435 2436 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { 2437 /* data register seems to give 0x8000 in some error cases even 2438 * though busy bit is not set in offset register; 2439 * in addition, length must be at least 1 due to type field */ 2440 spin_unlock(&local->baplock); 2441 printk(KERN_DEBUG "%s: Received info frame with invalid " 2442 "length 0x%04x (type 0x%04x)\n", dev->name, 2443 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2444 goto out; 2445 } 2446 2447 skb = dev_alloc_skb(sizeof(info) + left); 2448 if (skb == NULL) { 2449 spin_unlock(&local->baplock); 2450 printk(KERN_DEBUG "%s: Could not allocate skb for info " 2451 "frame\n", dev->name); 2452 goto out; 2453 } 2454 2455 skb_put_data(skb, &info, sizeof(info)); 2456 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) 2457 { 2458 spin_unlock(&local->baplock); 2459 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " 2460 "len=0x%04x, type=0x%04x\n", dev->name, fid, 2461 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2462 dev_kfree_skb(skb); 2463 goto out; 2464 } 2465 spin_unlock(&local->baplock); 2466 2467 skb_queue_tail(&local->info_list, skb); 2468 tasklet_schedule(&local->info_tasklet); 2469 2470 out: 2471 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); 2472 } 2473 2474 2475 /* Called only as a tasklet (software IRQ) */ 2476 static void hostap_bap_tasklet(unsigned long data) 2477 { 2478 local_info_t *local = (local_info_t *) data; 2479 struct net_device *dev = local->dev; 2480 u16 ev; 2481 int frames = 30; 2482 2483 if (local->func->card_present && !local->func->card_present(local)) 2484 return; 2485 2486 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2487 2488 /* Process all pending BAP events without generating new interrupts 2489 * for them */ 2490 while (frames-- > 0) { 2491 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2492 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) 2493 break; 2494 if (ev & HFA384X_EV_RX) 2495 prism2_rx(local); 2496 if (ev & HFA384X_EV_INFO) 2497 prism2_info(local); 2498 if (ev & HFA384X_EV_TX) 2499 prism2_tx_ev(local); 2500 if (ev & HFA384X_EV_TXEXC) 2501 prism2_txexc(local); 2502 } 2503 2504 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2505 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2506 2507 /* Enable interrupts for new BAP events */ 2508 hfa384x_events_all(dev); 2509 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2510 } 2511 2512 2513 /* Called only from hardware IRQ */ 2514 static void prism2_infdrop(struct net_device *dev) 2515 { 2516 static unsigned long last_inquire = 0; 2517 2518 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); 2519 2520 /* some firmware versions seem to get stuck with 2521 * full CommTallies in high traffic load cases; every 2522 * packet will then cause INFDROP event and CommTallies 2523 * info frame will not be sent automatically. Try to 2524 * get out of this state by inquiring CommTallies. */ 2525 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { 2526 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, 2527 HFA384X_INFO_COMMTALLIES, NULL, 0); 2528 last_inquire = jiffies; 2529 } 2530 } 2531 2532 2533 /* Called only from hardware IRQ */ 2534 static void prism2_ev_tick(struct net_device *dev) 2535 { 2536 struct hostap_interface *iface; 2537 local_info_t *local; 2538 u16 evstat, inten; 2539 static int prev_stuck = 0; 2540 2541 iface = netdev_priv(dev); 2542 local = iface->local; 2543 2544 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && 2545 local->last_tick_timer) { 2546 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 2547 inten = HFA384X_INW(HFA384X_INTEN_OFF); 2548 if (!prev_stuck) { 2549 printk(KERN_INFO "%s: SW TICK stuck? " 2550 "bits=0x%lx EvStat=%04x IntEn=%04x\n", 2551 dev->name, local->bits, evstat, inten); 2552 } 2553 local->sw_tick_stuck++; 2554 if ((evstat & HFA384X_BAP0_EVENTS) && 2555 (inten & HFA384X_BAP0_EVENTS)) { 2556 printk(KERN_INFO "%s: trying to recover from IRQ " 2557 "hang\n", dev->name); 2558 hfa384x_events_no_bap0(dev); 2559 } 2560 prev_stuck = 1; 2561 } else 2562 prev_stuck = 0; 2563 } 2564 2565 2566 /* Called only from hardware IRQ */ 2567 static void prism2_check_magic(local_info_t *local) 2568 { 2569 /* at least PCI Prism2.5 with bus mastering seems to sometimes 2570 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the 2571 * register once or twice seems to get the correct value.. PCI cards 2572 * cannot anyway be removed during normal operation, so there is not 2573 * really any need for this verification with them. */ 2574 2575 #ifndef PRISM2_PCI 2576 #ifndef final_version 2577 static unsigned long last_magic_err = 0; 2578 struct net_device *dev = local->dev; 2579 2580 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 2581 if (!local->hw_ready) 2582 return; 2583 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2584 if (time_after(jiffies, last_magic_err + 10 * HZ)) { 2585 printk("%s: Interrupt, but SWSUPPORT0 does not match: " 2586 "%04X != %04X - card removed?\n", dev->name, 2587 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2588 HFA384X_MAGIC); 2589 last_magic_err = jiffies; 2590 } else if (net_ratelimit()) { 2591 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " 2592 "MAGIC=%04x\n", dev->name, 2593 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2594 HFA384X_MAGIC); 2595 } 2596 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) 2597 schedule_work(&local->reset_queue); 2598 return; 2599 } 2600 #endif /* final_version */ 2601 #endif /* !PRISM2_PCI */ 2602 } 2603 2604 2605 /* Called only from hardware IRQ */ 2606 static irqreturn_t prism2_interrupt(int irq, void *dev_id) 2607 { 2608 struct net_device *dev = dev_id; 2609 struct hostap_interface *iface; 2610 local_info_t *local; 2611 int events = 0; 2612 u16 ev; 2613 2614 iface = netdev_priv(dev); 2615 local = iface->local; 2616 2617 /* Detect early interrupt before driver is fully configured */ 2618 spin_lock(&local->irq_init_lock); 2619 if (!dev->base_addr) { 2620 if (net_ratelimit()) { 2621 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", 2622 dev->name); 2623 } 2624 spin_unlock(&local->irq_init_lock); 2625 return IRQ_HANDLED; 2626 } 2627 spin_unlock(&local->irq_init_lock); 2628 2629 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); 2630 2631 if (local->func->card_present && !local->func->card_present(local)) { 2632 if (net_ratelimit()) { 2633 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", 2634 dev->name); 2635 } 2636 return IRQ_HANDLED; 2637 } 2638 2639 prism2_check_magic(local); 2640 2641 for (;;) { 2642 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2643 if (ev == 0xffff) { 2644 if (local->shutdown) 2645 return IRQ_HANDLED; 2646 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2647 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", 2648 dev->name); 2649 return IRQ_HANDLED; 2650 } 2651 2652 ev &= HFA384X_INW(HFA384X_INTEN_OFF); 2653 if (ev == 0) 2654 break; 2655 2656 if (ev & HFA384X_EV_CMD) { 2657 prism2_cmd_ev(dev); 2658 } 2659 2660 /* Above events are needed even before hw is ready, but other 2661 * events should be skipped during initialization. This may 2662 * change for AllocEv if allocate_fid is implemented without 2663 * busy waiting. */ 2664 if (!local->hw_ready || local->hw_resetting || 2665 !local->dev_enabled) { 2666 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2667 if (ev & HFA384X_EV_CMD) 2668 goto next_event; 2669 if ((ev & HFA384X_EVENT_MASK) == 0) 2670 return IRQ_HANDLED; 2671 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && 2672 net_ratelimit()) { 2673 printk(KERN_DEBUG "%s: prism2_interrupt: hw " 2674 "not ready; skipping events 0x%04x " 2675 "(IntEn=0x%04x)%s%s%s\n", 2676 dev->name, ev, 2677 HFA384X_INW(HFA384X_INTEN_OFF), 2678 !local->hw_ready ? " (!hw_ready)" : "", 2679 local->hw_resetting ? 2680 " (hw_resetting)" : "", 2681 !local->dev_enabled ? 2682 " (!dev_enabled)" : ""); 2683 } 2684 HFA384X_OUTW(ev, HFA384X_EVACK_OFF); 2685 return IRQ_HANDLED; 2686 } 2687 2688 if (ev & HFA384X_EV_TICK) { 2689 prism2_ev_tick(dev); 2690 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); 2691 } 2692 2693 if (ev & HFA384X_EV_ALLOC) { 2694 prism2_alloc_ev(dev); 2695 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 2696 } 2697 2698 /* Reading data from the card is quite time consuming, so do it 2699 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed 2700 * and unmasked after needed data has been read completely. */ 2701 if (ev & HFA384X_BAP0_EVENTS) { 2702 hfa384x_events_no_bap0(dev); 2703 tasklet_schedule(&local->bap_tasklet); 2704 } 2705 2706 #ifndef final_version 2707 if (ev & HFA384X_EV_WTERR) { 2708 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); 2709 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); 2710 } 2711 #endif /* final_version */ 2712 2713 if (ev & HFA384X_EV_INFDROP) { 2714 prism2_infdrop(dev); 2715 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); 2716 } 2717 2718 next_event: 2719 events++; 2720 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { 2721 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " 2722 "(EvStat=0x%04x)\n", 2723 PRISM2_MAX_INTERRUPT_EVENTS, 2724 HFA384X_INW(HFA384X_EVSTAT_OFF)); 2725 break; 2726 } 2727 } 2728 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); 2729 return IRQ_RETVAL(events); 2730 } 2731 2732 2733 static void prism2_check_sta_fw_version(local_info_t *local) 2734 { 2735 struct hfa384x_comp_ident comp; 2736 int id, variant, major, minor; 2737 2738 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, 2739 &comp, sizeof(comp), 1) < 0) 2740 return; 2741 2742 local->fw_ap = 0; 2743 id = le16_to_cpu(comp.id); 2744 if (id != HFA384X_COMP_ID_STA) { 2745 if (id == HFA384X_COMP_ID_FW_AP) 2746 local->fw_ap = 1; 2747 return; 2748 } 2749 2750 major = __le16_to_cpu(comp.major); 2751 minor = __le16_to_cpu(comp.minor); 2752 variant = __le16_to_cpu(comp.variant); 2753 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); 2754 2755 /* Station firmware versions before 1.4.x seem to have a bug in 2756 * firmware-based WEP encryption when using Host AP mode, so use 2757 * host_encrypt as a default for them. Firmware version 1.4.9 is the 2758 * first one that has been seen to produce correct encryption, but the 2759 * bug might be fixed before that (although, at least 1.4.2 is broken). 2760 */ 2761 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); 2762 2763 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && 2764 !local->fw_encrypt_ok) { 2765 printk(KERN_DEBUG "%s: defaulting to host-based encryption as " 2766 "a workaround for firmware bug in Host AP mode WEP\n", 2767 local->dev->name); 2768 local->host_encrypt = 1; 2769 } 2770 2771 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken 2772 * in station firmware versions before 1.5.x. With these versions, the 2773 * driver uses a workaround with bogus frame format (4th address after 2774 * the payload). This is not compatible with other AP devices. Since 2775 * the firmware bug is fixed in the latest station firmware versions, 2776 * automatically enable standard compliant mode for cards using station 2777 * firmware version 1.5.0 or newer. */ 2778 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) 2779 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; 2780 else { 2781 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " 2782 "workaround for firmware bug in Host AP mode WDS\n", 2783 local->dev->name); 2784 } 2785 2786 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); 2787 } 2788 2789 2790 static void hostap_passive_scan(struct timer_list *t) 2791 { 2792 local_info_t *local = from_timer(local, t, passive_scan_timer); 2793 struct net_device *dev = local->dev; 2794 u16 chan; 2795 2796 if (local->passive_scan_interval <= 0) 2797 return; 2798 2799 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { 2800 int max_tries = 16; 2801 2802 /* Even though host system does not really know when the WLAN 2803 * MAC is sending frames, try to avoid changing channels for 2804 * passive scanning when a host-generated frame is being 2805 * transmitted */ 2806 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 2807 printk(KERN_DEBUG "%s: passive scan detected pending " 2808 "TX - delaying\n", dev->name); 2809 local->passive_scan_timer.expires = jiffies + HZ / 10; 2810 add_timer(&local->passive_scan_timer); 2811 return; 2812 } 2813 2814 do { 2815 local->passive_scan_channel++; 2816 if (local->passive_scan_channel > 14) 2817 local->passive_scan_channel = 1; 2818 max_tries--; 2819 } while (!(local->channel_mask & 2820 (1 << (local->passive_scan_channel - 1))) && 2821 max_tries > 0); 2822 2823 if (max_tries == 0) { 2824 printk(KERN_INFO "%s: no allowed passive scan channels" 2825 " found\n", dev->name); 2826 return; 2827 } 2828 2829 printk(KERN_DEBUG "%s: passive scan channel %d\n", 2830 dev->name, local->passive_scan_channel); 2831 chan = local->passive_scan_channel; 2832 local->passive_scan_state = PASSIVE_SCAN_WAIT; 2833 local->passive_scan_timer.expires = jiffies + HZ / 10; 2834 } else { 2835 chan = local->channel; 2836 local->passive_scan_state = PASSIVE_SCAN_LISTEN; 2837 local->passive_scan_timer.expires = jiffies + 2838 local->passive_scan_interval * HZ; 2839 } 2840 2841 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | 2842 (HFA384X_TEST_CHANGE_CHANNEL << 8), 2843 chan, NULL, 0)) 2844 printk(KERN_ERR "%s: passive scan channel set %d " 2845 "failed\n", dev->name, chan); 2846 2847 add_timer(&local->passive_scan_timer); 2848 } 2849 2850 2851 /* Called only as a scheduled task when communications quality values should 2852 * be updated. */ 2853 static void handle_comms_qual_update(struct work_struct *work) 2854 { 2855 local_info_t *local = 2856 container_of(work, local_info_t, comms_qual_update); 2857 prism2_update_comms_qual(local->dev); 2858 } 2859 2860 2861 /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is 2862 * used to monitor that local->last_tick_timer is being updated. If not, 2863 * interrupt busy-loop is assumed and driver tries to recover by masking out 2864 * some events. */ 2865 static void hostap_tick_timer(struct timer_list *t) 2866 { 2867 static unsigned long last_inquire = 0; 2868 local_info_t *local = from_timer(local, t, tick_timer); 2869 local->last_tick_timer = jiffies; 2870 2871 /* Inquire CommTallies every 10 seconds to keep the statistics updated 2872 * more often during low load and when using 32-bit tallies. */ 2873 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && 2874 !local->hw_downloading && local->hw_ready && 2875 !local->hw_resetting && local->dev_enabled) { 2876 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, 2877 HFA384X_INFO_COMMTALLIES, NULL, 0); 2878 last_inquire = jiffies; 2879 } 2880 2881 if ((local->last_comms_qual_update == 0 || 2882 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && 2883 (local->iw_mode == IW_MODE_INFRA || 2884 local->iw_mode == IW_MODE_ADHOC)) { 2885 schedule_work(&local->comms_qual_update); 2886 } 2887 2888 local->tick_timer.expires = jiffies + 2 * HZ; 2889 add_timer(&local->tick_timer); 2890 } 2891 2892 2893 #if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS) 2894 static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) 2895 { 2896 return HFA384X_INW(reg); 2897 } 2898 2899 static int prism2_registers_proc_show(struct seq_file *m, void *v) 2900 { 2901 local_info_t *local = m->private; 2902 2903 #define SHOW_REG(n) \ 2904 seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) 2905 2906 SHOW_REG(CMD); 2907 SHOW_REG(PARAM0); 2908 SHOW_REG(PARAM1); 2909 SHOW_REG(PARAM2); 2910 SHOW_REG(STATUS); 2911 SHOW_REG(RESP0); 2912 SHOW_REG(RESP1); 2913 SHOW_REG(RESP2); 2914 SHOW_REG(INFOFID); 2915 SHOW_REG(CONTROL); 2916 SHOW_REG(SELECT0); 2917 SHOW_REG(SELECT1); 2918 SHOW_REG(OFFSET0); 2919 SHOW_REG(OFFSET1); 2920 SHOW_REG(RXFID); 2921 SHOW_REG(ALLOCFID); 2922 SHOW_REG(TXCOMPLFID); 2923 SHOW_REG(SWSUPPORT0); 2924 SHOW_REG(SWSUPPORT1); 2925 SHOW_REG(SWSUPPORT2); 2926 SHOW_REG(EVSTAT); 2927 SHOW_REG(INTEN); 2928 SHOW_REG(EVACK); 2929 /* Do not read data registers, because they change the state of the 2930 * MAC (offset += 2) */ 2931 /* SHOW_REG(DATA0); */ 2932 /* SHOW_REG(DATA1); */ 2933 SHOW_REG(AUXPAGE); 2934 SHOW_REG(AUXOFFSET); 2935 /* SHOW_REG(AUXDATA); */ 2936 #ifdef PRISM2_PCI 2937 SHOW_REG(PCICOR); 2938 SHOW_REG(PCIHCR); 2939 SHOW_REG(PCI_M0_ADDRH); 2940 SHOW_REG(PCI_M0_ADDRL); 2941 SHOW_REG(PCI_M0_LEN); 2942 SHOW_REG(PCI_M0_CTL); 2943 SHOW_REG(PCI_STATUS); 2944 SHOW_REG(PCI_M1_ADDRH); 2945 SHOW_REG(PCI_M1_ADDRL); 2946 SHOW_REG(PCI_M1_LEN); 2947 SHOW_REG(PCI_M1_CTL); 2948 #endif /* PRISM2_PCI */ 2949 2950 return 0; 2951 } 2952 #endif 2953 2954 struct set_tim_data { 2955 struct list_head list; 2956 int aid; 2957 int set; 2958 }; 2959 2960 static int prism2_set_tim(struct net_device *dev, int aid, int set) 2961 { 2962 struct list_head *ptr; 2963 struct set_tim_data *new_entry; 2964 struct hostap_interface *iface; 2965 local_info_t *local; 2966 2967 iface = netdev_priv(dev); 2968 local = iface->local; 2969 2970 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); 2971 if (new_entry == NULL) 2972 return -ENOMEM; 2973 2974 new_entry->aid = aid; 2975 new_entry->set = set; 2976 2977 spin_lock_bh(&local->set_tim_lock); 2978 list_for_each(ptr, &local->set_tim_list) { 2979 struct set_tim_data *entry = 2980 list_entry(ptr, struct set_tim_data, list); 2981 if (entry->aid == aid) { 2982 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " 2983 "set=%d ==> %d\n", 2984 local->dev->name, aid, entry->set, set); 2985 entry->set = set; 2986 kfree(new_entry); 2987 new_entry = NULL; 2988 break; 2989 } 2990 } 2991 if (new_entry) 2992 list_add_tail(&new_entry->list, &local->set_tim_list); 2993 spin_unlock_bh(&local->set_tim_lock); 2994 2995 schedule_work(&local->set_tim_queue); 2996 2997 return 0; 2998 } 2999 3000 3001 static void handle_set_tim_queue(struct work_struct *work) 3002 { 3003 local_info_t *local = container_of(work, local_info_t, set_tim_queue); 3004 struct set_tim_data *entry; 3005 u16 val; 3006 3007 for (;;) { 3008 entry = NULL; 3009 spin_lock_bh(&local->set_tim_lock); 3010 if (!list_empty(&local->set_tim_list)) { 3011 entry = list_entry(local->set_tim_list.next, 3012 struct set_tim_data, list); 3013 list_del(&entry->list); 3014 } 3015 spin_unlock_bh(&local->set_tim_lock); 3016 if (!entry) 3017 break; 3018 3019 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", 3020 local->dev->name, entry->aid, entry->set); 3021 3022 val = entry->aid; 3023 if (entry->set) 3024 val |= 0x8000; 3025 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { 3026 printk(KERN_DEBUG "%s: set_tim failed (aid=%d " 3027 "set=%d)\n", 3028 local->dev->name, entry->aid, entry->set); 3029 } 3030 3031 kfree(entry); 3032 } 3033 } 3034 3035 3036 static void prism2_clear_set_tim_queue(local_info_t *local) 3037 { 3038 struct list_head *ptr, *n; 3039 3040 list_for_each_safe(ptr, n, &local->set_tim_list) { 3041 struct set_tim_data *entry; 3042 entry = list_entry(ptr, struct set_tim_data, list); 3043 list_del(&entry->list); 3044 kfree(entry); 3045 } 3046 } 3047 3048 3049 /* 3050 * HostAP uses two layers of net devices, where the inner 3051 * layer gets called all the time from the outer layer. 3052 * This is a natural nesting, which needs a split lock type. 3053 */ 3054 static struct lock_class_key hostap_netdev_xmit_lock_key; 3055 static struct lock_class_key hostap_netdev_addr_lock_key; 3056 3057 static void prism2_set_lockdep_class_one(struct net_device *dev, 3058 struct netdev_queue *txq, 3059 void *_unused) 3060 { 3061 lockdep_set_class(&txq->_xmit_lock, 3062 &hostap_netdev_xmit_lock_key); 3063 } 3064 3065 static void prism2_set_lockdep_class(struct net_device *dev) 3066 { 3067 lockdep_set_class(&dev->addr_list_lock, 3068 &hostap_netdev_addr_lock_key); 3069 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); 3070 } 3071 3072 static struct net_device * 3073 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, 3074 struct device *sdev) 3075 { 3076 struct net_device *dev; 3077 struct hostap_interface *iface; 3078 struct local_info *local; 3079 int len, i, ret; 3080 3081 if (funcs == NULL) 3082 return NULL; 3083 3084 len = strlen(dev_template); 3085 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { 3086 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", 3087 dev_template); 3088 return NULL; 3089 } 3090 3091 len = sizeof(struct hostap_interface) + 3092 3 + sizeof(struct local_info) + 3093 3 + sizeof(struct ap_data); 3094 3095 dev = alloc_etherdev(len); 3096 if (dev == NULL) 3097 return NULL; 3098 3099 iface = netdev_priv(dev); 3100 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); 3101 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); 3102 local->dev = iface->dev = dev; 3103 iface->local = local; 3104 iface->type = HOSTAP_INTERFACE_MASTER; 3105 INIT_LIST_HEAD(&local->hostap_interfaces); 3106 3107 local->hw_module = THIS_MODULE; 3108 3109 #ifdef PRISM2_IO_DEBUG 3110 local->io_debug_enabled = 1; 3111 #endif /* PRISM2_IO_DEBUG */ 3112 3113 local->func = funcs; 3114 local->func->cmd = hfa384x_cmd; 3115 local->func->read_regs = hfa384x_read_regs; 3116 local->func->get_rid = hfa384x_get_rid; 3117 local->func->set_rid = hfa384x_set_rid; 3118 local->func->hw_enable = prism2_hw_enable; 3119 local->func->hw_config = prism2_hw_config; 3120 local->func->hw_reset = prism2_hw_reset; 3121 local->func->hw_shutdown = prism2_hw_shutdown; 3122 local->func->reset_port = prism2_reset_port; 3123 local->func->schedule_reset = prism2_schedule_reset; 3124 #ifdef PRISM2_DOWNLOAD_SUPPORT 3125 local->func->read_aux_fops = &prism2_download_aux_dump_proc_fops; 3126 local->func->download = prism2_download; 3127 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3128 local->func->tx = prism2_tx_80211; 3129 local->func->set_tim = prism2_set_tim; 3130 local->func->need_tx_headroom = 0; /* no need to add txdesc in 3131 * skb->data (FIX: maybe for DMA bus 3132 * mastering? */ 3133 3134 local->mtu = mtu; 3135 3136 rwlock_init(&local->iface_lock); 3137 spin_lock_init(&local->txfidlock); 3138 spin_lock_init(&local->cmdlock); 3139 spin_lock_init(&local->baplock); 3140 spin_lock_init(&local->lock); 3141 spin_lock_init(&local->irq_init_lock); 3142 mutex_init(&local->rid_bap_mtx); 3143 3144 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) 3145 card_idx = 0; 3146 local->card_idx = card_idx; 3147 3148 len = strlen(essid); 3149 memcpy(local->essid, essid, 3150 len > MAX_SSID_LEN ? MAX_SSID_LEN : len); 3151 local->essid[MAX_SSID_LEN] = '\0'; 3152 i = GET_INT_PARM(iw_mode, card_idx); 3153 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || 3154 i == IW_MODE_MONITOR) { 3155 local->iw_mode = i; 3156 } else { 3157 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " 3158 "IW_MODE_MASTER\n", i); 3159 local->iw_mode = IW_MODE_MASTER; 3160 } 3161 local->channel = GET_INT_PARM(channel, card_idx); 3162 local->beacon_int = GET_INT_PARM(beacon_int, card_idx); 3163 local->dtim_period = GET_INT_PARM(dtim_period, card_idx); 3164 local->wds_max_connections = 16; 3165 local->tx_control = HFA384X_TX_CTRL_FLAGS; 3166 local->manual_retry_count = -1; 3167 local->rts_threshold = 2347; 3168 local->fragm_threshold = 2346; 3169 local->rssi_to_dBm = 100; /* default; to be overriden by 3170 * cnfDbmAdjust, if available */ 3171 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; 3172 local->sram_type = -1; 3173 local->scan_channel_mask = 0xffff; 3174 local->monitor_type = PRISM2_MONITOR_RADIOTAP; 3175 3176 /* Initialize task queue structures */ 3177 INIT_WORK(&local->reset_queue, handle_reset_queue); 3178 INIT_WORK(&local->set_multicast_list_queue, 3179 hostap_set_multicast_list_queue); 3180 3181 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); 3182 INIT_LIST_HEAD(&local->set_tim_list); 3183 spin_lock_init(&local->set_tim_lock); 3184 3185 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); 3186 3187 /* Initialize tasklets for handling hardware IRQ related operations 3188 * outside hw IRQ handler */ 3189 #define HOSTAP_TASKLET_INIT(q, f, d) \ 3190 do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ 3191 while (0) 3192 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, 3193 (unsigned long) local); 3194 3195 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, 3196 (unsigned long) local); 3197 hostap_info_init(local); 3198 3199 HOSTAP_TASKLET_INIT(&local->rx_tasklet, 3200 hostap_rx_tasklet, (unsigned long) local); 3201 skb_queue_head_init(&local->rx_list); 3202 3203 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, 3204 hostap_sta_tx_exc_tasklet, (unsigned long) local); 3205 skb_queue_head_init(&local->sta_tx_exc_list); 3206 3207 INIT_LIST_HEAD(&local->cmd_queue); 3208 init_waitqueue_head(&local->hostscan_wq); 3209 3210 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); 3211 3212 timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0); 3213 timer_setup(&local->tick_timer, hostap_tick_timer, 0); 3214 local->tick_timer.expires = jiffies + 2 * HZ; 3215 add_timer(&local->tick_timer); 3216 3217 INIT_LIST_HEAD(&local->bss_list); 3218 3219 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); 3220 3221 dev->type = ARPHRD_IEEE80211; 3222 dev->header_ops = &hostap_80211_ops; 3223 3224 rtnl_lock(); 3225 ret = dev_alloc_name(dev, "wifi%d"); 3226 SET_NETDEV_DEV(dev, sdev); 3227 if (ret >= 0) 3228 ret = register_netdevice(dev); 3229 3230 prism2_set_lockdep_class(dev); 3231 rtnl_unlock(); 3232 if (ret < 0) { 3233 printk(KERN_WARNING "%s: register netdevice failed!\n", 3234 dev_info); 3235 goto fail; 3236 } 3237 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); 3238 3239 hostap_init_data(local); 3240 return dev; 3241 3242 fail: 3243 free_netdev(dev); 3244 return NULL; 3245 } 3246 3247 3248 static int hostap_hw_ready(struct net_device *dev) 3249 { 3250 struct hostap_interface *iface; 3251 struct local_info *local; 3252 3253 iface = netdev_priv(dev); 3254 local = iface->local; 3255 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, 3256 "", dev_template); 3257 3258 if (local->ddev) { 3259 if (local->iw_mode == IW_MODE_INFRA || 3260 local->iw_mode == IW_MODE_ADHOC) { 3261 netif_carrier_off(local->dev); 3262 netif_carrier_off(local->ddev); 3263 } 3264 hostap_init_proc(local); 3265 #ifndef PRISM2_NO_PROCFS_DEBUG 3266 proc_create_single_data("registers", 0, local->proc, 3267 prism2_registers_proc_show, local); 3268 #endif /* PRISM2_NO_PROCFS_DEBUG */ 3269 hostap_init_ap_proc(local); 3270 return 0; 3271 } 3272 3273 return -1; 3274 } 3275 3276 3277 static void prism2_free_local_data(struct net_device *dev) 3278 { 3279 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; 3280 int i; 3281 struct hostap_interface *iface; 3282 struct local_info *local; 3283 struct list_head *ptr, *n; 3284 3285 if (dev == NULL) 3286 return; 3287 3288 iface = netdev_priv(dev); 3289 local = iface->local; 3290 3291 /* Unregister all netdevs before freeing local data. */ 3292 list_for_each_safe(ptr, n, &local->hostap_interfaces) { 3293 iface = list_entry(ptr, struct hostap_interface, list); 3294 if (iface->type == HOSTAP_INTERFACE_MASTER) { 3295 /* special handling for this interface below */ 3296 continue; 3297 } 3298 hostap_remove_interface(iface->dev, 0, 1); 3299 } 3300 3301 unregister_netdev(local->dev); 3302 3303 flush_work(&local->reset_queue); 3304 flush_work(&local->set_multicast_list_queue); 3305 flush_work(&local->set_tim_queue); 3306 #ifndef PRISM2_NO_STATION_MODES 3307 flush_work(&local->info_queue); 3308 #endif 3309 flush_work(&local->comms_qual_update); 3310 3311 lib80211_crypt_info_free(&local->crypt_info); 3312 3313 if (timer_pending(&local->passive_scan_timer)) 3314 del_timer(&local->passive_scan_timer); 3315 3316 if (timer_pending(&local->tick_timer)) 3317 del_timer(&local->tick_timer); 3318 3319 prism2_clear_cmd_queue(local); 3320 3321 skb_queue_purge(&local->info_list); 3322 skb_queue_purge(&local->rx_list); 3323 skb_queue_purge(&local->sta_tx_exc_list); 3324 3325 if (local->dev_enabled) 3326 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 3327 3328 if (local->ap != NULL) 3329 hostap_free_data(local->ap); 3330 3331 #ifndef PRISM2_NO_PROCFS_DEBUG 3332 if (local->proc != NULL) 3333 remove_proc_entry("registers", local->proc); 3334 #endif /* PRISM2_NO_PROCFS_DEBUG */ 3335 hostap_remove_proc(local); 3336 3337 tx_cb = local->tx_callback; 3338 while (tx_cb != NULL) { 3339 tx_cb_prev = tx_cb; 3340 tx_cb = tx_cb->next; 3341 kfree(tx_cb_prev); 3342 } 3343 3344 hostap_set_hostapd(local, 0, 0); 3345 hostap_set_hostapd_sta(local, 0, 0); 3346 3347 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { 3348 if (local->frag_cache[i].skb != NULL) 3349 dev_kfree_skb(local->frag_cache[i].skb); 3350 } 3351 3352 #ifdef PRISM2_DOWNLOAD_SUPPORT 3353 prism2_download_free_data(local->dl_pri); 3354 prism2_download_free_data(local->dl_sec); 3355 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3356 3357 prism2_clear_set_tim_queue(local); 3358 3359 list_for_each_safe(ptr, n, &local->bss_list) { 3360 struct hostap_bss_info *bss = 3361 list_entry(ptr, struct hostap_bss_info, list); 3362 kfree(bss); 3363 } 3364 3365 kfree(local->pda); 3366 kfree(local->last_scan_results); 3367 kfree(local->generic_elem); 3368 3369 free_netdev(local->dev); 3370 } 3371 3372 3373 #if (defined(PRISM2_PCI) && defined(CONFIG_PM)) || defined(PRISM2_PCCARD) 3374 static void prism2_suspend(struct net_device *dev) 3375 { 3376 struct hostap_interface *iface; 3377 struct local_info *local; 3378 union iwreq_data wrqu; 3379 3380 iface = netdev_priv(dev); 3381 local = iface->local; 3382 3383 /* Send disconnect event, e.g., to trigger reassociation after resume 3384 * if wpa_supplicant is used. */ 3385 memset(&wrqu, 0, sizeof(wrqu)); 3386 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3387 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); 3388 3389 /* Disable hardware and firmware */ 3390 prism2_hw_shutdown(dev, 0); 3391 } 3392 #endif /* (PRISM2_PCI && CONFIG_PM) || PRISM2_PCCARD */ 3393 3394 3395 /* These might at some point be compiled separately and used as separate 3396 * kernel modules or linked into one */ 3397 #ifdef PRISM2_DOWNLOAD_SUPPORT 3398 #include "hostap_download.c" 3399 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3400 3401 #ifdef PRISM2_CALLBACK 3402 /* External hostap_callback.c file can be used to, e.g., blink activity led. 3403 * This can use platform specific code and must define prism2_callback() 3404 * function (if PRISM2_CALLBACK is not defined, these function calls are not 3405 * used. */ 3406 #include "hostap_callback.c" 3407 #endif /* PRISM2_CALLBACK */ 3408