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 153 154 155 static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) 156 { 157 return HFA384X_INW(reg); 158 } 159 160 161 static void hfa384x_read_regs(struct net_device *dev, 162 struct hfa384x_regs *regs) 163 { 164 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); 165 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 166 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); 167 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); 168 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); 169 } 170 171 172 /** 173 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) 174 * @local: pointer to private Host AP driver data 175 * @entry: Prism2 command queue entry to be freed 176 * @del_req: request the entry to be removed 177 * 178 * Internal helper function for freeing Prism2 command queue entries. 179 * Caller must have acquired local->cmdlock before calling this function. 180 */ 181 static inline void __hostap_cmd_queue_free(local_info_t *local, 182 struct hostap_cmd_queue *entry, 183 int del_req) 184 { 185 if (del_req) { 186 entry->del_req = 1; 187 if (!list_empty(&entry->list)) { 188 list_del_init(&entry->list); 189 local->cmd_queue_len--; 190 } 191 } 192 193 if (refcount_dec_and_test(&entry->usecnt) && entry->del_req) 194 kfree(entry); 195 } 196 197 198 /** 199 * hostap_cmd_queue_free - Free Prism2 command queue entry 200 * @local: pointer to private Host AP driver data 201 * @entry: Prism2 command queue entry to be freed 202 * @del_req: request the entry to be removed 203 * 204 * Free a Prism2 command queue entry. 205 */ 206 static inline void hostap_cmd_queue_free(local_info_t *local, 207 struct hostap_cmd_queue *entry, 208 int del_req) 209 { 210 unsigned long flags; 211 212 spin_lock_irqsave(&local->cmdlock, flags); 213 __hostap_cmd_queue_free(local, entry, del_req); 214 spin_unlock_irqrestore(&local->cmdlock, flags); 215 } 216 217 218 /** 219 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries 220 * @local: pointer to private Host AP driver data 221 */ 222 static void prism2_clear_cmd_queue(local_info_t *local) 223 { 224 struct list_head *ptr, *n; 225 unsigned long flags; 226 struct hostap_cmd_queue *entry; 227 228 spin_lock_irqsave(&local->cmdlock, flags); 229 list_for_each_safe(ptr, n, &local->cmd_queue) { 230 entry = list_entry(ptr, struct hostap_cmd_queue, list); 231 refcount_inc(&entry->usecnt); 232 printk(KERN_DEBUG "%s: removed pending cmd_queue entry " 233 "(type=%d, cmd=0x%04x, param0=0x%04x)\n", 234 local->dev->name, entry->type, entry->cmd, 235 entry->param0); 236 __hostap_cmd_queue_free(local, entry, 1); 237 } 238 if (local->cmd_queue_len) { 239 /* This should not happen; print debug message and clear 240 * queue length. */ 241 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " 242 "flush\n", local->dev->name, local->cmd_queue_len); 243 local->cmd_queue_len = 0; 244 } 245 spin_unlock_irqrestore(&local->cmdlock, flags); 246 } 247 248 249 /** 250 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware 251 * @dev: pointer to net_device 252 * @entry: Prism2 command queue entry to be issued 253 */ 254 static int hfa384x_cmd_issue(struct net_device *dev, 255 struct hostap_cmd_queue *entry) 256 { 257 struct hostap_interface *iface; 258 local_info_t *local; 259 int tries; 260 u16 reg; 261 unsigned long flags; 262 263 iface = netdev_priv(dev); 264 local = iface->local; 265 266 if (local->func->card_present && !local->func->card_present(local)) 267 return -ENODEV; 268 269 if (entry->issued) { 270 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", 271 dev->name, entry); 272 } 273 274 /* wait until busy bit is clear; this should always be clear since the 275 * commands are serialized */ 276 tries = HFA384X_CMD_BUSY_TIMEOUT; 277 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 278 tries--; 279 udelay(1); 280 } 281 #ifndef final_version 282 if (tries != HFA384X_CMD_BUSY_TIMEOUT) { 283 prism2_io_debug_error(dev, 1); 284 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " 285 "for %d usec\n", dev->name, 286 HFA384X_CMD_BUSY_TIMEOUT - tries); 287 } 288 #endif 289 if (tries == 0) { 290 reg = HFA384X_INW(HFA384X_CMD_OFF); 291 prism2_io_debug_error(dev, 2); 292 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " 293 "reg=0x%04x\n", dev->name, reg); 294 return -ETIMEDOUT; 295 } 296 297 /* write command */ 298 spin_lock_irqsave(&local->cmdlock, flags); 299 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); 300 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); 301 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); 302 entry->issued = 1; 303 spin_unlock_irqrestore(&local->cmdlock, flags); 304 305 return 0; 306 } 307 308 309 /** 310 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion 311 * @dev: pointer to net_device 312 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 313 * @param0: value for Param0 register 314 * @param1: value for Param1 register (pointer; %NULL if not used) 315 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed 316 * 317 * Issue given command (possibly after waiting in command queue) and sleep 318 * until the command is completed (or timed out or interrupted). This can be 319 * called only from user process context. 320 */ 321 static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, 322 u16 *param1, u16 *resp0) 323 { 324 struct hostap_interface *iface; 325 local_info_t *local; 326 int err, res, issue, issued = 0; 327 unsigned long flags; 328 struct hostap_cmd_queue *entry; 329 DECLARE_WAITQUEUE(wait, current); 330 331 iface = netdev_priv(dev); 332 local = iface->local; 333 334 if (in_interrupt()) { 335 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " 336 "context\n", dev->name); 337 return -1; 338 } 339 340 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { 341 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 342 dev->name); 343 return -1; 344 } 345 346 if (signal_pending(current)) 347 return -EINTR; 348 349 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 350 if (entry == NULL) 351 return -ENOMEM; 352 353 refcount_set(&entry->usecnt, 1); 354 entry->type = CMD_SLEEP; 355 entry->cmd = cmd; 356 entry->param0 = param0; 357 if (param1) 358 entry->param1 = *param1; 359 init_waitqueue_head(&entry->compl); 360 361 /* prepare to wait for command completion event, but do not sleep yet 362 */ 363 add_wait_queue(&entry->compl, &wait); 364 set_current_state(TASK_INTERRUPTIBLE); 365 366 spin_lock_irqsave(&local->cmdlock, flags); 367 issue = list_empty(&local->cmd_queue); 368 if (issue) 369 entry->issuing = 1; 370 list_add_tail(&entry->list, &local->cmd_queue); 371 local->cmd_queue_len++; 372 spin_unlock_irqrestore(&local->cmdlock, flags); 373 374 err = 0; 375 if (!issue) 376 goto wait_completion; 377 378 if (signal_pending(current)) 379 err = -EINTR; 380 381 if (!err) { 382 if (hfa384x_cmd_issue(dev, entry)) 383 err = -ETIMEDOUT; 384 else 385 issued = 1; 386 } 387 388 wait_completion: 389 if (!err && entry->type != CMD_COMPLETED) { 390 /* sleep until command is completed or timed out */ 391 res = schedule_timeout(2 * HZ); 392 } else 393 res = -1; 394 395 if (!err && signal_pending(current)) 396 err = -EINTR; 397 398 if (err && issued) { 399 /* the command was issued, so a CmdCompl event should occur 400 * soon; however, there's a pending signal and 401 * schedule_timeout() would be interrupted; wait a short period 402 * of time to avoid removing entry from the list before 403 * CmdCompl event */ 404 udelay(300); 405 } 406 407 set_current_state(TASK_RUNNING); 408 remove_wait_queue(&entry->compl, &wait); 409 410 /* If entry->list is still in the list, it must be removed 411 * first and in this case prism2_cmd_ev() does not yet have 412 * local reference to it, and the data can be kfree()'d 413 * here. If the command completion event is still generated, 414 * it will be assigned to next (possibly) pending command, but 415 * the driver will reset the card anyway due to timeout 416 * 417 * If the entry is not in the list prism2_cmd_ev() has a local 418 * reference to it, but keeps cmdlock as long as the data is 419 * needed, so the data can be kfree()'d here. */ 420 421 /* FIX: if the entry->list is in the list, it has not been completed 422 * yet, so removing it here is somewhat wrong.. this could cause 423 * references to freed memory and next list_del() causing NULL pointer 424 * dereference.. it would probably be better to leave the entry in the 425 * list and the list should be emptied during hw reset */ 426 427 spin_lock_irqsave(&local->cmdlock, flags); 428 if (!list_empty(&entry->list)) { 429 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " 430 "(entry=%p, type=%d, res=%d)\n", dev->name, entry, 431 entry->type, res); 432 list_del_init(&entry->list); 433 local->cmd_queue_len--; 434 } 435 spin_unlock_irqrestore(&local->cmdlock, flags); 436 437 if (err) { 438 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", 439 dev->name, err); 440 res = err; 441 goto done; 442 } 443 444 if (entry->type != CMD_COMPLETED) { 445 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 446 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " 447 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " 448 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, 449 res, entry, entry->type, entry->cmd, entry->param0, reg, 450 HFA384X_INW(HFA384X_INTEN_OFF)); 451 if (reg & HFA384X_EV_CMD) { 452 /* Command completion event is pending, but the 453 * interrupt was not delivered - probably an issue 454 * with pcmcia-cs configuration. */ 455 printk(KERN_WARNING "%s: interrupt delivery does not " 456 "seem to work\n", dev->name); 457 } 458 prism2_io_debug_error(dev, 3); 459 res = -ETIMEDOUT; 460 goto done; 461 } 462 463 if (resp0 != NULL) 464 *resp0 = entry->resp0; 465 #ifndef final_version 466 if (entry->res) { 467 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " 468 "resp0=0x%04x\n", 469 dev->name, cmd, entry->res, entry->resp0); 470 } 471 #endif /* final_version */ 472 473 res = entry->res; 474 done: 475 hostap_cmd_queue_free(local, entry, 1); 476 return res; 477 } 478 479 480 /** 481 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed 482 * @dev: pointer to net_device 483 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 484 * @param0: value for Param0 register 485 * @callback: command completion callback function (%NULL = no callback) 486 * @context: context data to be given to the callback function 487 * 488 * Issue given command (possibly after waiting in command queue) and use 489 * callback function to indicate command completion. This can be called both 490 * from user and interrupt context. The callback function will be called in 491 * hardware IRQ context. It can be %NULL, when no function is called when 492 * command is completed. 493 */ 494 static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, 495 void (*callback)(struct net_device *dev, 496 long context, u16 resp0, 497 u16 status), 498 long context) 499 { 500 struct hostap_interface *iface; 501 local_info_t *local; 502 int issue, ret; 503 unsigned long flags; 504 struct hostap_cmd_queue *entry; 505 506 iface = netdev_priv(dev); 507 local = iface->local; 508 509 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { 510 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 511 dev->name); 512 return -1; 513 } 514 515 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 516 if (entry == NULL) 517 return -ENOMEM; 518 519 refcount_set(&entry->usecnt, 1); 520 entry->type = CMD_CALLBACK; 521 entry->cmd = cmd; 522 entry->param0 = param0; 523 entry->callback = callback; 524 entry->context = context; 525 526 spin_lock_irqsave(&local->cmdlock, flags); 527 issue = list_empty(&local->cmd_queue); 528 if (issue) 529 entry->issuing = 1; 530 list_add_tail(&entry->list, &local->cmd_queue); 531 local->cmd_queue_len++; 532 spin_unlock_irqrestore(&local->cmdlock, flags); 533 534 if (issue && hfa384x_cmd_issue(dev, entry)) 535 ret = -ETIMEDOUT; 536 else 537 ret = 0; 538 539 hostap_cmd_queue_free(local, entry, ret); 540 541 return ret; 542 } 543 544 545 /** 546 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) 547 * @dev: pointer to net_device 548 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 549 * @param0: value for Param0 register 550 * @io_debug_num: I/O debug error number 551 * 552 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). 553 */ 554 static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, 555 int io_debug_num) 556 { 557 int tries; 558 u16 reg; 559 560 /* wait until busy bit is clear; this should always be clear since the 561 * commands are serialized */ 562 tries = HFA384X_CMD_BUSY_TIMEOUT; 563 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 564 tries--; 565 udelay(1); 566 } 567 if (tries == 0) { 568 reg = HFA384X_INW(HFA384X_CMD_OFF); 569 prism2_io_debug_error(dev, io_debug_num); 570 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " 571 "reg=0x%04x\n", dev->name, io_debug_num, reg); 572 return -ETIMEDOUT; 573 } 574 575 /* write command */ 576 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); 577 HFA384X_OUTW(cmd, HFA384X_CMD_OFF); 578 579 return 0; 580 } 581 582 583 /** 584 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion 585 * @dev: pointer to net_device 586 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 587 * @param0: value for Param0 register 588 */ 589 static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) 590 { 591 int res, tries; 592 u16 reg; 593 594 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); 595 if (res) 596 return res; 597 598 /* wait for command completion */ 599 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) 600 tries = HFA384X_DL_COMPL_TIMEOUT; 601 else 602 tries = HFA384X_CMD_COMPL_TIMEOUT; 603 604 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 605 tries > 0) { 606 tries--; 607 udelay(10); 608 } 609 if (tries == 0) { 610 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 611 prism2_io_debug_error(dev, 5); 612 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " 613 "reg=0x%04x\n", dev->name, reg); 614 return -ETIMEDOUT; 615 } 616 617 res = (HFA384X_INW(HFA384X_STATUS_OFF) & 618 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | 619 BIT(8))) >> 8; 620 #ifndef final_version 621 if (res) { 622 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", 623 dev->name, cmd, res); 624 } 625 #endif 626 627 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 628 629 return res; 630 } 631 632 633 /** 634 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion 635 * @dev: pointer to net_device 636 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 637 * @param0: value for Param0 register 638 */ 639 static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, 640 u16 param0) 641 { 642 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); 643 } 644 645 646 /** 647 * prism2_cmd_ev - Prism2 command completion event handler 648 * @dev: pointer to net_device 649 * 650 * Interrupt handler for command completion events. Called by the main 651 * interrupt handler in hardware IRQ context. Read Resp0 and status registers 652 * from the hardware and ACK the event. Depending on the issued command type 653 * either wake up the sleeping process that is waiting for command completion 654 * or call the callback function. Issue the next command, if one is pending. 655 */ 656 static void prism2_cmd_ev(struct net_device *dev) 657 { 658 struct hostap_interface *iface; 659 local_info_t *local; 660 struct hostap_cmd_queue *entry = NULL; 661 662 iface = netdev_priv(dev); 663 local = iface->local; 664 665 spin_lock(&local->cmdlock); 666 if (!list_empty(&local->cmd_queue)) { 667 entry = list_entry(local->cmd_queue.next, 668 struct hostap_cmd_queue, list); 669 refcount_inc(&entry->usecnt); 670 list_del_init(&entry->list); 671 local->cmd_queue_len--; 672 673 if (!entry->issued) { 674 printk(KERN_DEBUG "%s: Command completion event, but " 675 "cmd not issued\n", dev->name); 676 __hostap_cmd_queue_free(local, entry, 1); 677 entry = NULL; 678 } 679 } 680 spin_unlock(&local->cmdlock); 681 682 if (!entry) { 683 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 684 printk(KERN_DEBUG "%s: Command completion event, but no " 685 "pending commands\n", dev->name); 686 return; 687 } 688 689 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); 690 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & 691 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | 692 BIT(9) | BIT(8))) >> 8; 693 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 694 695 /* TODO: rest of the CmdEv handling could be moved to tasklet */ 696 if (entry->type == CMD_SLEEP) { 697 entry->type = CMD_COMPLETED; 698 wake_up_interruptible(&entry->compl); 699 } else if (entry->type == CMD_CALLBACK) { 700 if (entry->callback) 701 entry->callback(dev, entry->context, entry->resp0, 702 entry->res); 703 } else { 704 printk(KERN_DEBUG "%s: Invalid command completion type %d\n", 705 dev->name, entry->type); 706 } 707 hostap_cmd_queue_free(local, entry, 1); 708 709 /* issue next command, if pending */ 710 entry = NULL; 711 spin_lock(&local->cmdlock); 712 if (!list_empty(&local->cmd_queue)) { 713 entry = list_entry(local->cmd_queue.next, 714 struct hostap_cmd_queue, list); 715 if (entry->issuing) { 716 /* hfa384x_cmd() has already started issuing this 717 * command, so do not start here */ 718 entry = NULL; 719 } 720 if (entry) 721 refcount_inc(&entry->usecnt); 722 } 723 spin_unlock(&local->cmdlock); 724 725 if (entry) { 726 /* issue next command; if command issuing fails, remove the 727 * entry from cmd_queue */ 728 int res = hfa384x_cmd_issue(dev, entry); 729 spin_lock(&local->cmdlock); 730 __hostap_cmd_queue_free(local, entry, res); 731 spin_unlock(&local->cmdlock); 732 } 733 } 734 735 736 static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) 737 { 738 int tries = HFA384X_BAP_BUSY_TIMEOUT; 739 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 740 741 while (res && tries > 0) { 742 tries--; 743 udelay(1); 744 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 745 } 746 return res; 747 } 748 749 750 /* Offset must be even */ 751 static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, 752 int offset) 753 { 754 u16 o_off, s_off; 755 int ret = 0; 756 757 if (offset % 2 || bap > 1) 758 return -EINVAL; 759 760 if (bap == BAP1) { 761 o_off = HFA384X_OFFSET1_OFF; 762 s_off = HFA384X_SELECT1_OFF; 763 } else { 764 o_off = HFA384X_OFFSET0_OFF; 765 s_off = HFA384X_SELECT0_OFF; 766 } 767 768 if (hfa384x_wait_offset(dev, o_off)) { 769 prism2_io_debug_error(dev, 7); 770 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", 771 dev->name); 772 ret = -ETIMEDOUT; 773 goto out; 774 } 775 776 HFA384X_OUTW(id, s_off); 777 HFA384X_OUTW(offset, o_off); 778 779 if (hfa384x_wait_offset(dev, o_off)) { 780 prism2_io_debug_error(dev, 8); 781 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", 782 dev->name); 783 ret = -ETIMEDOUT; 784 goto out; 785 } 786 #ifndef final_version 787 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { 788 prism2_io_debug_error(dev, 9); 789 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " 790 "(%d,0x04%x,%d); reg=0x%04x\n", 791 dev->name, bap, id, offset, HFA384X_INW(o_off)); 792 ret = -EINVAL; 793 } 794 #endif 795 796 out: 797 return ret; 798 } 799 800 801 static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, 802 int exact_len) 803 { 804 struct hostap_interface *iface; 805 local_info_t *local; 806 int res, rlen = 0; 807 struct hfa384x_rid_hdr rec; 808 809 iface = netdev_priv(dev); 810 local = iface->local; 811 812 if (local->no_pri) { 813 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " 814 "f/w\n", dev->name, rid, len); 815 return -ENOTTY; /* Well.. not really correct, but return 816 * something unique enough.. */ 817 } 818 819 if ((local->func->card_present && !local->func->card_present(local)) || 820 local->hw_downloading) 821 return -ENODEV; 822 823 res = mutex_lock_interruptible(&local->rid_bap_mtx); 824 if (res) 825 return res; 826 827 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); 828 if (res) { 829 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " 830 "(res=%d, rid=%04x, len=%d)\n", 831 dev->name, res, rid, len); 832 mutex_unlock(&local->rid_bap_mtx); 833 return res; 834 } 835 836 spin_lock_bh(&local->baplock); 837 838 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 839 if (res) 840 goto unlock; 841 842 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); 843 if (res) 844 goto unlock; 845 846 if (le16_to_cpu(rec.len) == 0) { 847 /* RID not available */ 848 res = -ENODATA; 849 goto unlock; 850 } 851 852 rlen = (le16_to_cpu(rec.len) - 1) * 2; 853 if (exact_len && rlen != len) { 854 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " 855 "rid=0x%04x, len=%d (expected %d)\n", 856 dev->name, rid, rlen, len); 857 res = -ENODATA; 858 } 859 860 res = hfa384x_from_bap(dev, BAP0, buf, len); 861 862 unlock: 863 spin_unlock_bh(&local->baplock); 864 mutex_unlock(&local->rid_bap_mtx); 865 866 if (res) { 867 if (res != -ENODATA) 868 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " 869 "len=%d) - failed - res=%d\n", dev->name, rid, 870 len, res); 871 if (res == -ETIMEDOUT) 872 prism2_hw_reset(dev); 873 return res; 874 } 875 876 return rlen; 877 } 878 879 880 static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) 881 { 882 struct hostap_interface *iface; 883 local_info_t *local; 884 struct hfa384x_rid_hdr rec; 885 int res; 886 887 iface = netdev_priv(dev); 888 local = iface->local; 889 890 if (local->no_pri) { 891 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " 892 "f/w\n", dev->name, rid, len); 893 return -ENOTTY; /* Well.. not really correct, but return 894 * something unique enough.. */ 895 } 896 897 if ((local->func->card_present && !local->func->card_present(local)) || 898 local->hw_downloading) 899 return -ENODEV; 900 901 rec.rid = cpu_to_le16(rid); 902 /* RID len in words and +1 for rec.rid */ 903 rec.len = cpu_to_le16(len / 2 + len % 2 + 1); 904 905 res = mutex_lock_interruptible(&local->rid_bap_mtx); 906 if (res) 907 return res; 908 909 spin_lock_bh(&local->baplock); 910 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 911 if (!res) 912 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); 913 if (!res) 914 res = hfa384x_to_bap(dev, BAP0, buf, len); 915 spin_unlock_bh(&local->baplock); 916 917 if (res) { 918 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " 919 "failed - res=%d\n", dev->name, rid, len, res); 920 mutex_unlock(&local->rid_bap_mtx); 921 return res; 922 } 923 924 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); 925 mutex_unlock(&local->rid_bap_mtx); 926 927 if (res) { 928 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " 929 "failed (res=%d, rid=%04x, len=%d)\n", 930 dev->name, res, rid, len); 931 932 if (res == -ETIMEDOUT) 933 prism2_hw_reset(dev); 934 } 935 936 return res; 937 } 938 939 940 static void hfa384x_disable_interrupts(struct net_device *dev) 941 { 942 /* disable interrupts and clear event status */ 943 HFA384X_OUTW(0, HFA384X_INTEN_OFF); 944 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 945 } 946 947 948 static void hfa384x_enable_interrupts(struct net_device *dev) 949 { 950 /* ack pending events and enable interrupts from selected events */ 951 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 952 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 953 } 954 955 956 static void hfa384x_events_no_bap0(struct net_device *dev) 957 { 958 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, 959 HFA384X_INTEN_OFF); 960 } 961 962 963 static void hfa384x_events_all(struct net_device *dev) 964 { 965 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 966 } 967 968 969 static void hfa384x_events_only_cmd(struct net_device *dev) 970 { 971 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); 972 } 973 974 975 static u16 hfa384x_allocate_fid(struct net_device *dev, int len) 976 { 977 u16 fid; 978 unsigned long delay; 979 980 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event 981 * below would be handled like CmdCompl event (sleep here, wake up from 982 * interrupt handler */ 983 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { 984 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", 985 dev->name, len); 986 return 0xffff; 987 } 988 989 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; 990 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && 991 time_before(jiffies, delay)) 992 yield(); 993 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { 994 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); 995 return 0xffff; 996 } 997 998 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); 999 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 1000 1001 return fid; 1002 } 1003 1004 1005 static int prism2_reset_port(struct net_device *dev) 1006 { 1007 struct hostap_interface *iface; 1008 local_info_t *local; 1009 int res; 1010 1011 iface = netdev_priv(dev); 1012 local = iface->local; 1013 1014 if (!local->dev_enabled) 1015 return 0; 1016 1017 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, 1018 NULL, NULL); 1019 if (res) 1020 printk(KERN_DEBUG "%s: reset port failed to disable port\n", 1021 dev->name); 1022 else { 1023 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, 1024 NULL, NULL); 1025 if (res) 1026 printk(KERN_DEBUG "%s: reset port failed to enable " 1027 "port\n", dev->name); 1028 } 1029 1030 /* It looks like at least some STA firmware versions reset 1031 * fragmentation threshold back to 2346 after enable command. Restore 1032 * the configured value, if it differs from this default. */ 1033 if (local->fragm_threshold != 2346 && 1034 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1035 local->fragm_threshold)) { 1036 printk(KERN_DEBUG "%s: failed to restore fragmentation " 1037 "threshold (%d) after Port0 enable\n", 1038 dev->name, local->fragm_threshold); 1039 } 1040 1041 /* Some firmwares lose antenna selection settings on reset */ 1042 (void) hostap_set_antsel(local); 1043 1044 return res; 1045 } 1046 1047 1048 static int prism2_get_version_info(struct net_device *dev, u16 rid, 1049 const char *txt) 1050 { 1051 struct hfa384x_comp_ident comp; 1052 struct hostap_interface *iface; 1053 local_info_t *local; 1054 1055 iface = netdev_priv(dev); 1056 local = iface->local; 1057 1058 if (local->no_pri) { 1059 /* PRI f/w not yet available - cannot read RIDs */ 1060 return -1; 1061 } 1062 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { 1063 printk(KERN_DEBUG "Could not get RID for component %s\n", txt); 1064 return -1; 1065 } 1066 1067 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, 1068 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), 1069 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); 1070 return 0; 1071 } 1072 1073 1074 static int prism2_setup_rids(struct net_device *dev) 1075 { 1076 struct hostap_interface *iface; 1077 local_info_t *local; 1078 __le16 tmp; 1079 int ret = 0; 1080 1081 iface = netdev_priv(dev); 1082 local = iface->local; 1083 1084 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); 1085 1086 if (!local->fw_ap) { 1087 u16 tmp1 = hostap_get_porttype(local); 1088 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); 1089 if (ret) { 1090 printk("%s: Port type setting to %d failed\n", 1091 dev->name, tmp1); 1092 goto fail; 1093 } 1094 } 1095 1096 /* Setting SSID to empty string seems to kill the card in Host AP mode 1097 */ 1098 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { 1099 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, 1100 local->essid); 1101 if (ret) { 1102 printk("%s: AP own SSID setting failed\n", dev->name); 1103 goto fail; 1104 } 1105 } 1106 1107 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, 1108 PRISM2_DATA_MAXLEN); 1109 if (ret) { 1110 printk("%s: MAC data length setting to %d failed\n", 1111 dev->name, PRISM2_DATA_MAXLEN); 1112 goto fail; 1113 } 1114 1115 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { 1116 printk("%s: Channel list read failed\n", dev->name); 1117 ret = -EINVAL; 1118 goto fail; 1119 } 1120 local->channel_mask = le16_to_cpu(tmp); 1121 1122 if (local->channel < 1 || local->channel > 14 || 1123 !(local->channel_mask & (1 << (local->channel - 1)))) { 1124 printk(KERN_WARNING "%s: Channel setting out of range " 1125 "(%d)!\n", dev->name, local->channel); 1126 ret = -EBUSY; 1127 goto fail; 1128 } 1129 1130 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); 1131 if (ret) { 1132 printk("%s: Channel setting to %d failed\n", 1133 dev->name, local->channel); 1134 goto fail; 1135 } 1136 1137 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, 1138 local->beacon_int); 1139 if (ret) { 1140 printk("%s: Beacon interval setting to %d failed\n", 1141 dev->name, local->beacon_int); 1142 /* this may fail with Symbol/Lucent firmware */ 1143 if (ret == -ETIMEDOUT) 1144 goto fail; 1145 } 1146 1147 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, 1148 local->dtim_period); 1149 if (ret) { 1150 printk("%s: DTIM period setting to %d failed\n", 1151 dev->name, local->dtim_period); 1152 /* this may fail with Symbol/Lucent firmware */ 1153 if (ret == -ETIMEDOUT) 1154 goto fail; 1155 } 1156 1157 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, 1158 local->is_promisc); 1159 if (ret) 1160 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", 1161 dev->name, local->is_promisc); 1162 1163 if (!local->fw_ap) { 1164 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, 1165 local->essid); 1166 if (ret) { 1167 printk("%s: Desired SSID setting failed\n", dev->name); 1168 goto fail; 1169 } 1170 } 1171 1172 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and 1173 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic 1174 * rates */ 1175 if (local->tx_rate_control == 0) { 1176 local->tx_rate_control = 1177 HFA384X_RATES_1MBPS | 1178 HFA384X_RATES_2MBPS | 1179 HFA384X_RATES_5MBPS | 1180 HFA384X_RATES_11MBPS; 1181 } 1182 if (local->basic_rates == 0) 1183 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; 1184 1185 if (!local->fw_ap) { 1186 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, 1187 local->tx_rate_control); 1188 if (ret) { 1189 printk("%s: TXRateControl setting to %d failed\n", 1190 dev->name, local->tx_rate_control); 1191 goto fail; 1192 } 1193 1194 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, 1195 local->tx_rate_control); 1196 if (ret) { 1197 printk("%s: cnfSupportedRates setting to %d failed\n", 1198 dev->name, local->tx_rate_control); 1199 } 1200 1201 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, 1202 local->basic_rates); 1203 if (ret) { 1204 printk("%s: cnfBasicRates setting to %d failed\n", 1205 dev->name, local->basic_rates); 1206 } 1207 1208 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); 1209 if (ret) { 1210 printk("%s: Create IBSS setting to 1 failed\n", 1211 dev->name); 1212 } 1213 } 1214 1215 if (local->name_set) 1216 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, 1217 local->name); 1218 1219 if (hostap_set_encryption(local)) { 1220 printk(KERN_INFO "%s: could not configure encryption\n", 1221 dev->name); 1222 } 1223 1224 (void) hostap_set_antsel(local); 1225 1226 if (hostap_set_roaming(local)) { 1227 printk(KERN_INFO "%s: could not set host roaming\n", 1228 dev->name); 1229 } 1230 1231 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && 1232 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) 1233 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", 1234 dev->name, local->enh_sec); 1235 1236 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently 1237 * not working correctly (last seven counters report bogus values). 1238 * This has been fixed in 0.8.2, so enable 32-bit tallies only 1239 * beginning with that firmware version. Another bug fix for 32-bit 1240 * tallies in 1.4.0; should 16-bit tallies be used for some other 1241 * versions, too? */ 1242 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { 1243 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { 1244 printk(KERN_INFO "%s: cnfThirty2Tally setting " 1245 "failed\n", dev->name); 1246 local->tallies32 = 0; 1247 } else 1248 local->tallies32 = 1; 1249 } else 1250 local->tallies32 = 0; 1251 1252 hostap_set_auth_algs(local); 1253 1254 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1255 local->fragm_threshold)) { 1256 printk(KERN_INFO "%s: setting FragmentationThreshold to %d " 1257 "failed\n", dev->name, local->fragm_threshold); 1258 } 1259 1260 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, 1261 local->rts_threshold)) { 1262 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", 1263 dev->name, local->rts_threshold); 1264 } 1265 1266 if (local->manual_retry_count >= 0 && 1267 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, 1268 local->manual_retry_count)) { 1269 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", 1270 dev->name, local->manual_retry_count); 1271 } 1272 1273 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && 1274 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { 1275 local->rssi_to_dBm = le16_to_cpu(tmp); 1276 } 1277 1278 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && 1279 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { 1280 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", 1281 dev->name); 1282 } 1283 1284 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && 1285 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, 1286 local->generic_elem, local->generic_elem_len)) { 1287 printk(KERN_INFO "%s: setting genericElement failed\n", 1288 dev->name); 1289 } 1290 1291 fail: 1292 return ret; 1293 } 1294 1295 1296 static int prism2_hw_init(struct net_device *dev, int initial) 1297 { 1298 struct hostap_interface *iface; 1299 local_info_t *local; 1300 int ret, first = 1; 1301 unsigned long start, delay; 1302 1303 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); 1304 1305 iface = netdev_priv(dev); 1306 local = iface->local; 1307 1308 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); 1309 1310 init: 1311 /* initialize HFA 384x */ 1312 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); 1313 if (ret) { 1314 printk(KERN_INFO "%s: first command failed - assuming card " 1315 "does not have primary firmware\n", dev_info); 1316 } 1317 1318 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1319 /* EvStat has Cmd bit set in some cases, so retry once if no 1320 * wait was needed */ 1321 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1322 printk(KERN_DEBUG "%s: init command completed too quickly - " 1323 "retrying\n", dev->name); 1324 first = 0; 1325 goto init; 1326 } 1327 1328 start = jiffies; 1329 delay = jiffies + HFA384X_INIT_TIMEOUT; 1330 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 1331 time_before(jiffies, delay)) 1332 yield(); 1333 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1334 printk(KERN_DEBUG "%s: assuming no Primary image in " 1335 "flash - card initialization not completed\n", 1336 dev_info); 1337 local->no_pri = 1; 1338 #ifdef PRISM2_DOWNLOAD_SUPPORT 1339 if (local->sram_type == -1) 1340 local->sram_type = prism2_get_ram_size(local); 1341 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1342 return 1; 1343 } 1344 local->no_pri = 0; 1345 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", 1346 (jiffies - start) * 1000 / HZ); 1347 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1348 return 0; 1349 } 1350 1351 1352 static int prism2_hw_init2(struct net_device *dev, int initial) 1353 { 1354 struct hostap_interface *iface; 1355 local_info_t *local; 1356 int i; 1357 1358 iface = netdev_priv(dev); 1359 local = iface->local; 1360 1361 #ifdef PRISM2_DOWNLOAD_SUPPORT 1362 kfree(local->pda); 1363 if (local->no_pri) 1364 local->pda = NULL; 1365 else 1366 local->pda = prism2_read_pda(dev); 1367 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1368 1369 hfa384x_disable_interrupts(dev); 1370 1371 #ifndef final_version 1372 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); 1373 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 1374 printk("SWSUPPORT0 write/read failed: %04X != %04X\n", 1375 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); 1376 goto failed; 1377 } 1378 #endif 1379 1380 if (initial || local->pri_only) { 1381 hfa384x_events_only_cmd(dev); 1382 /* get card version information */ 1383 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || 1384 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { 1385 hfa384x_disable_interrupts(dev); 1386 goto failed; 1387 } 1388 1389 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { 1390 printk(KERN_DEBUG "%s: Failed to read STA f/w version " 1391 "- only Primary f/w present\n", dev->name); 1392 local->pri_only = 1; 1393 return 0; 1394 } 1395 local->pri_only = 0; 1396 hfa384x_disable_interrupts(dev); 1397 } 1398 1399 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and 1400 * enable interrupts before this. This would also require some sort of 1401 * sleeping AllocEv waiting */ 1402 1403 /* allocate TX FIDs */ 1404 local->txfid_len = PRISM2_TXFID_LEN; 1405 for (i = 0; i < PRISM2_TXFID_COUNT; i++) { 1406 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); 1407 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { 1408 local->txfid[i] = hfa384x_allocate_fid(dev, 1600); 1409 if (local->txfid[i] != 0xffff) { 1410 printk(KERN_DEBUG "%s: Using shorter TX FID " 1411 "(1600 bytes)\n", dev->name); 1412 local->txfid_len = 1600; 1413 } 1414 } 1415 if (local->txfid[i] == 0xffff) 1416 goto failed; 1417 local->intransmitfid[i] = PRISM2_TXFID_EMPTY; 1418 } 1419 1420 hfa384x_events_only_cmd(dev); 1421 1422 if (initial) { 1423 struct list_head *ptr; 1424 prism2_check_sta_fw_version(local); 1425 1426 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, 1427 dev->dev_addr, 6, 1) < 0) { 1428 printk("%s: could not get own MAC address\n", 1429 dev->name); 1430 } 1431 list_for_each(ptr, &local->hostap_interfaces) { 1432 iface = list_entry(ptr, struct hostap_interface, list); 1433 eth_hw_addr_inherit(iface->dev, dev); 1434 } 1435 } else if (local->fw_ap) 1436 prism2_check_sta_fw_version(local); 1437 1438 prism2_setup_rids(dev); 1439 1440 /* MAC is now configured, but port 0 is not yet enabled */ 1441 return 0; 1442 1443 failed: 1444 if (!local->no_pri) 1445 printk(KERN_WARNING "%s: Initialization failed\n", dev_info); 1446 return 1; 1447 } 1448 1449 1450 static int prism2_hw_enable(struct net_device *dev, int initial) 1451 { 1452 struct hostap_interface *iface; 1453 local_info_t *local; 1454 int was_resetting; 1455 1456 iface = netdev_priv(dev); 1457 local = iface->local; 1458 was_resetting = local->hw_resetting; 1459 1460 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { 1461 printk("%s: MAC port 0 enabling failed\n", dev->name); 1462 return 1; 1463 } 1464 1465 local->hw_ready = 1; 1466 local->hw_reset_tries = 0; 1467 local->hw_resetting = 0; 1468 hfa384x_enable_interrupts(dev); 1469 1470 /* at least D-Link DWL-650 seems to require additional port reset 1471 * before it starts acting as an AP, so reset port automatically 1472 * here just in case */ 1473 if (initial && prism2_reset_port(dev)) { 1474 printk("%s: MAC port 0 resetting failed\n", dev->name); 1475 return 1; 1476 } 1477 1478 if (was_resetting && netif_queue_stopped(dev)) { 1479 /* If hw_reset() was called during pending transmit, netif 1480 * queue was stopped. Wake it up now since the wlan card has 1481 * been resetted. */ 1482 netif_wake_queue(dev); 1483 } 1484 1485 return 0; 1486 } 1487 1488 1489 static int prism2_hw_config(struct net_device *dev, int initial) 1490 { 1491 struct hostap_interface *iface; 1492 local_info_t *local; 1493 1494 iface = netdev_priv(dev); 1495 local = iface->local; 1496 1497 if (local->hw_downloading) 1498 return 1; 1499 1500 if (prism2_hw_init(dev, initial)) { 1501 return local->no_pri ? 0 : 1; 1502 } 1503 1504 if (prism2_hw_init2(dev, initial)) 1505 return 1; 1506 1507 /* Enable firmware if secondary image is loaded and at least one of the 1508 * netdevices is up. */ 1509 if (!local->pri_only && 1510 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { 1511 if (!local->dev_enabled) 1512 prism2_callback(local, PRISM2_CALLBACK_ENABLE); 1513 local->dev_enabled = 1; 1514 return prism2_hw_enable(dev, initial); 1515 } 1516 1517 return 0; 1518 } 1519 1520 1521 static void prism2_hw_shutdown(struct net_device *dev, int no_disable) 1522 { 1523 struct hostap_interface *iface; 1524 local_info_t *local; 1525 1526 iface = netdev_priv(dev); 1527 local = iface->local; 1528 1529 /* Allow only command completion events during disable */ 1530 hfa384x_events_only_cmd(dev); 1531 1532 local->hw_ready = 0; 1533 if (local->dev_enabled) 1534 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 1535 local->dev_enabled = 0; 1536 1537 if (local->func->card_present && !local->func->card_present(local)) { 1538 printk(KERN_DEBUG "%s: card already removed or not configured " 1539 "during shutdown\n", dev->name); 1540 return; 1541 } 1542 1543 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && 1544 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) 1545 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); 1546 1547 hfa384x_disable_interrupts(dev); 1548 1549 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) 1550 hfa384x_events_only_cmd(dev); 1551 else 1552 prism2_clear_cmd_queue(local); 1553 } 1554 1555 1556 static void prism2_hw_reset(struct net_device *dev) 1557 { 1558 struct hostap_interface *iface; 1559 local_info_t *local; 1560 1561 #if 0 1562 static long last_reset = 0; 1563 1564 /* do not reset card more than once per second to avoid ending up in a 1565 * busy loop resetting the card */ 1566 if (time_before_eq(jiffies, last_reset + HZ)) 1567 return; 1568 last_reset = jiffies; 1569 #endif 1570 1571 iface = netdev_priv(dev); 1572 local = iface->local; 1573 1574 if (in_interrupt()) { 1575 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " 1576 "in interrupt context\n", dev->name); 1577 return; 1578 } 1579 1580 if (local->hw_downloading) 1581 return; 1582 1583 if (local->hw_resetting) { 1584 printk(KERN_WARNING "%s: %s: already resetting card - " 1585 "ignoring reset request\n", dev_info, dev->name); 1586 return; 1587 } 1588 1589 local->hw_reset_tries++; 1590 if (local->hw_reset_tries > 10) { 1591 printk(KERN_WARNING "%s: too many reset tries, skipping\n", 1592 dev->name); 1593 return; 1594 } 1595 1596 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); 1597 hfa384x_disable_interrupts(dev); 1598 local->hw_resetting = 1; 1599 if (local->func->cor_sreset) { 1600 /* Host system seems to hang in some cases with high traffic 1601 * load or shared interrupts during COR sreset. Disable shared 1602 * interrupts during reset to avoid these crashes. COS sreset 1603 * takes quite a long time, so it is unfortunate that this 1604 * seems to be needed. Anyway, I do not know of any better way 1605 * of avoiding the crash. */ 1606 disable_irq(dev->irq); 1607 local->func->cor_sreset(local); 1608 enable_irq(dev->irq); 1609 } 1610 prism2_hw_shutdown(dev, 1); 1611 prism2_hw_config(dev, 0); 1612 local->hw_resetting = 0; 1613 1614 #ifdef PRISM2_DOWNLOAD_SUPPORT 1615 if (local->dl_pri) { 1616 printk(KERN_DEBUG "%s: persistent download of primary " 1617 "firmware\n", dev->name); 1618 if (prism2_download_genesis(local, local->dl_pri) < 0) 1619 printk(KERN_WARNING "%s: download (PRI) failed\n", 1620 dev->name); 1621 } 1622 1623 if (local->dl_sec) { 1624 printk(KERN_DEBUG "%s: persistent download of secondary " 1625 "firmware\n", dev->name); 1626 if (prism2_download_volatile(local, local->dl_sec) < 0) 1627 printk(KERN_WARNING "%s: download (SEC) failed\n", 1628 dev->name); 1629 } 1630 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 1631 1632 /* TODO: restore beacon TIM bits for STAs that have buffered frames */ 1633 } 1634 1635 1636 static void prism2_schedule_reset(local_info_t *local) 1637 { 1638 schedule_work(&local->reset_queue); 1639 } 1640 1641 1642 /* Called only as scheduled task after noticing card timeout in interrupt 1643 * context */ 1644 static void handle_reset_queue(struct work_struct *work) 1645 { 1646 local_info_t *local = container_of(work, local_info_t, reset_queue); 1647 1648 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); 1649 prism2_hw_reset(local->dev); 1650 1651 if (netif_queue_stopped(local->dev)) { 1652 int i; 1653 1654 for (i = 0; i < PRISM2_TXFID_COUNT; i++) 1655 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { 1656 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " 1657 "wake up queue\n"); 1658 netif_wake_queue(local->dev); 1659 break; 1660 } 1661 } 1662 } 1663 1664 1665 static int prism2_get_txfid_idx(local_info_t *local) 1666 { 1667 int idx, end; 1668 unsigned long flags; 1669 1670 spin_lock_irqsave(&local->txfidlock, flags); 1671 end = idx = local->next_txfid; 1672 do { 1673 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1674 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; 1675 spin_unlock_irqrestore(&local->txfidlock, flags); 1676 return idx; 1677 } 1678 idx++; 1679 if (idx >= PRISM2_TXFID_COUNT) 1680 idx = 0; 1681 } while (idx != end); 1682 spin_unlock_irqrestore(&local->txfidlock, flags); 1683 1684 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " 1685 "packet dropped\n"); 1686 local->dev->stats.tx_dropped++; 1687 1688 return -1; 1689 } 1690 1691 1692 /* Called only from hardware IRQ */ 1693 static void prism2_transmit_cb(struct net_device *dev, long context, 1694 u16 resp0, u16 res) 1695 { 1696 struct hostap_interface *iface; 1697 local_info_t *local; 1698 int idx = (int) context; 1699 1700 iface = netdev_priv(dev); 1701 local = iface->local; 1702 1703 if (res) { 1704 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", 1705 dev->name, res); 1706 return; 1707 } 1708 1709 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { 1710 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " 1711 "idx=%d\n", dev->name, idx); 1712 return; 1713 } 1714 1715 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1716 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " 1717 "with no pending transmit\n", dev->name); 1718 } 1719 1720 if (netif_queue_stopped(dev)) { 1721 /* ready for next TX, so wake up queue that was stopped in 1722 * prism2_transmit() */ 1723 netif_wake_queue(dev); 1724 } 1725 1726 spin_lock(&local->txfidlock); 1727 1728 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid 1729 * will be automatically allocated for the next TX frame */ 1730 local->intransmitfid[idx] = resp0; 1731 1732 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " 1733 "resp0=0x%04x, transmit_txfid=0x%04x\n", 1734 dev->name, idx, local->txfid[idx], 1735 resp0, local->intransmitfid[local->next_txfid]); 1736 1737 idx++; 1738 if (idx >= PRISM2_TXFID_COUNT) 1739 idx = 0; 1740 local->next_txfid = idx; 1741 1742 /* check if all TX buffers are occupied */ 1743 do { 1744 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1745 spin_unlock(&local->txfidlock); 1746 return; 1747 } 1748 idx++; 1749 if (idx >= PRISM2_TXFID_COUNT) 1750 idx = 0; 1751 } while (idx != local->next_txfid); 1752 spin_unlock(&local->txfidlock); 1753 1754 /* no empty TX buffers, stop queue */ 1755 netif_stop_queue(dev); 1756 } 1757 1758 1759 /* Called only from software IRQ if PCI bus master is not used (with bus master 1760 * this can be called both from software and hardware IRQ) */ 1761 static int prism2_transmit(struct net_device *dev, int idx) 1762 { 1763 struct hostap_interface *iface; 1764 local_info_t *local; 1765 int res; 1766 1767 iface = netdev_priv(dev); 1768 local = iface->local; 1769 1770 /* The driver tries to stop netif queue so that there would not be 1771 * more than one attempt to transmit frames going on; check that this 1772 * is really the case */ 1773 1774 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1775 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " 1776 "when previous TX was pending\n", dev->name); 1777 return -1; 1778 } 1779 1780 /* stop the queue for the time that transmit is pending */ 1781 netif_stop_queue(dev); 1782 1783 /* transmit packet */ 1784 res = hfa384x_cmd_callback( 1785 dev, 1786 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, 1787 local->txfid[idx], 1788 prism2_transmit_cb, (long) idx); 1789 1790 if (res) { 1791 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " 1792 "failed (res=%d)\n", dev->name, res); 1793 dev->stats.tx_dropped++; 1794 netif_wake_queue(dev); 1795 return -1; 1796 } 1797 netif_trans_update(dev); 1798 1799 /* Since we did not wait for command completion, the card continues 1800 * to process on the background and we will finish handling when 1801 * command completion event is handled (prism2_cmd_ev() function) */ 1802 1803 return 0; 1804 } 1805 1806 1807 /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and 1808 * send the payload with this descriptor) */ 1809 /* Called only from software IRQ */ 1810 static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) 1811 { 1812 struct hostap_interface *iface; 1813 local_info_t *local; 1814 struct hfa384x_tx_frame txdesc; 1815 struct hostap_skb_tx_data *meta; 1816 int hdr_len, data_len, idx, res, ret = -1; 1817 u16 tx_control, fc; 1818 1819 iface = netdev_priv(dev); 1820 local = iface->local; 1821 1822 meta = (struct hostap_skb_tx_data *) skb->cb; 1823 1824 prism2_callback(local, PRISM2_CALLBACK_TX_START); 1825 1826 if ((local->func->card_present && !local->func->card_present(local)) || 1827 !local->hw_ready || local->hw_downloading || local->pri_only) { 1828 if (net_ratelimit()) { 1829 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" 1830 " skipping\n", dev->name); 1831 } 1832 goto fail; 1833 } 1834 1835 memset(&txdesc, 0, sizeof(txdesc)); 1836 1837 /* skb->data starts with txdesc->frame_control */ 1838 hdr_len = 24; 1839 skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len); 1840 fc = le16_to_cpu(txdesc.frame_control); 1841 if (ieee80211_is_data(txdesc.frame_control) && 1842 ieee80211_has_a4(txdesc.frame_control) && 1843 skb->len >= 30) { 1844 /* Addr4 */ 1845 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, 1846 ETH_ALEN); 1847 hdr_len += ETH_ALEN; 1848 } 1849 1850 tx_control = local->tx_control; 1851 if (meta->tx_cb_idx) { 1852 tx_control |= HFA384X_TX_CTRL_TX_OK; 1853 txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); 1854 } 1855 txdesc.tx_control = cpu_to_le16(tx_control); 1856 txdesc.tx_rate = meta->rate; 1857 1858 data_len = skb->len - hdr_len; 1859 txdesc.data_len = cpu_to_le16(data_len); 1860 txdesc.len = cpu_to_be16(data_len); 1861 1862 idx = prism2_get_txfid_idx(local); 1863 if (idx < 0) 1864 goto fail; 1865 1866 if (local->frame_dump & PRISM2_DUMP_TX_HDR) 1867 hostap_dump_tx_header(dev->name, &txdesc); 1868 1869 spin_lock(&local->baplock); 1870 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); 1871 1872 if (!res) 1873 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); 1874 if (!res) 1875 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, 1876 skb->len - hdr_len); 1877 spin_unlock(&local->baplock); 1878 1879 if (!res) 1880 res = prism2_transmit(dev, idx); 1881 if (res) { 1882 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", 1883 dev->name); 1884 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 1885 schedule_work(&local->reset_queue); 1886 goto fail; 1887 } 1888 1889 ret = 0; 1890 1891 fail: 1892 prism2_callback(local, PRISM2_CALLBACK_TX_END); 1893 return ret; 1894 } 1895 1896 1897 /* Some SMP systems have reported number of odd errors with hostap_pci. fid 1898 * register has changed values between consecutive reads for an unknown reason. 1899 * This should really not happen, so more debugging is needed. This test 1900 * version is a bit slower, but it will detect most of such register changes 1901 * and will try to get the correct fid eventually. */ 1902 #define EXTRA_FID_READ_TESTS 1903 1904 static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) 1905 { 1906 #ifdef EXTRA_FID_READ_TESTS 1907 u16 val, val2, val3; 1908 int i; 1909 1910 for (i = 0; i < 10; i++) { 1911 val = HFA384X_INW(reg); 1912 val2 = HFA384X_INW(reg); 1913 val3 = HFA384X_INW(reg); 1914 1915 if (val == val2 && val == val3) 1916 return val; 1917 1918 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" 1919 " %04x %04x %04x\n", 1920 dev->name, i, reg, val, val2, val3); 1921 if ((val == val2 || val == val3) && val != 0) 1922 return val; 1923 if (val2 == val3 && val2 != 0) 1924 return val2; 1925 } 1926 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " 1927 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); 1928 return val; 1929 #else /* EXTRA_FID_READ_TESTS */ 1930 return HFA384X_INW(reg); 1931 #endif /* EXTRA_FID_READ_TESTS */ 1932 } 1933 1934 1935 /* Called only as a tasklet (software IRQ) */ 1936 static void prism2_rx(local_info_t *local) 1937 { 1938 struct net_device *dev = local->dev; 1939 int res, rx_pending = 0; 1940 u16 len, hdr_len, rxfid, status, macport; 1941 struct hfa384x_rx_frame rxdesc; 1942 struct sk_buff *skb = NULL; 1943 1944 prism2_callback(local, PRISM2_CALLBACK_RX_START); 1945 1946 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); 1947 #ifndef final_version 1948 if (rxfid == 0) { 1949 rxfid = HFA384X_INW(HFA384X_RXFID_OFF); 1950 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", 1951 rxfid); 1952 if (rxfid == 0) { 1953 schedule_work(&local->reset_queue); 1954 goto rx_dropped; 1955 } 1956 /* try to continue with the new rxfid value */ 1957 } 1958 #endif 1959 1960 spin_lock(&local->baplock); 1961 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); 1962 if (!res) 1963 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); 1964 1965 if (res) { 1966 spin_unlock(&local->baplock); 1967 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, 1968 res); 1969 if (res == -ETIMEDOUT) { 1970 schedule_work(&local->reset_queue); 1971 } 1972 goto rx_dropped; 1973 } 1974 1975 len = le16_to_cpu(rxdesc.data_len); 1976 hdr_len = sizeof(rxdesc); 1977 status = le16_to_cpu(rxdesc.status); 1978 macport = (status >> 8) & 0x07; 1979 1980 /* Drop frames with too large reported payload length. Monitor mode 1981 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and 1982 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for 1983 * macport 7 */ 1984 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { 1985 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { 1986 if (len >= (u16) -14) { 1987 hdr_len -= 65535 - len; 1988 hdr_len--; 1989 } 1990 len = 0; 1991 } else { 1992 spin_unlock(&local->baplock); 1993 printk(KERN_DEBUG "%s: Received frame with invalid " 1994 "length 0x%04x\n", dev->name, len); 1995 hostap_dump_rx_header(dev->name, &rxdesc); 1996 goto rx_dropped; 1997 } 1998 } 1999 2000 skb = dev_alloc_skb(len + hdr_len); 2001 if (!skb) { 2002 spin_unlock(&local->baplock); 2003 printk(KERN_DEBUG "%s: RX failed to allocate skb\n", 2004 dev->name); 2005 goto rx_dropped; 2006 } 2007 skb->dev = dev; 2008 skb_put_data(skb, &rxdesc, hdr_len); 2009 2010 if (len > 0) 2011 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); 2012 spin_unlock(&local->baplock); 2013 if (res) { 2014 printk(KERN_DEBUG "%s: RX failed to read " 2015 "frame data\n", dev->name); 2016 goto rx_dropped; 2017 } 2018 2019 skb_queue_tail(&local->rx_list, skb); 2020 tasklet_schedule(&local->rx_tasklet); 2021 2022 rx_exit: 2023 prism2_callback(local, PRISM2_CALLBACK_RX_END); 2024 if (!rx_pending) { 2025 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); 2026 } 2027 2028 return; 2029 2030 rx_dropped: 2031 dev->stats.rx_dropped++; 2032 if (skb) 2033 dev_kfree_skb(skb); 2034 goto rx_exit; 2035 } 2036 2037 2038 /* Called only as a tasklet (software IRQ) */ 2039 static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) 2040 { 2041 struct hfa384x_rx_frame *rxdesc; 2042 struct net_device *dev = skb->dev; 2043 struct hostap_80211_rx_status stats; 2044 int hdrlen, rx_hdrlen; 2045 2046 rx_hdrlen = sizeof(*rxdesc); 2047 if (skb->len < sizeof(*rxdesc)) { 2048 /* Allow monitor mode to receive shorter frames */ 2049 if (local->iw_mode == IW_MODE_MONITOR && 2050 skb->len >= sizeof(*rxdesc) - 30) { 2051 rx_hdrlen = skb->len; 2052 } else { 2053 dev_kfree_skb(skb); 2054 return; 2055 } 2056 } 2057 2058 rxdesc = (struct hfa384x_rx_frame *) skb->data; 2059 2060 if (local->frame_dump & PRISM2_DUMP_RX_HDR && 2061 skb->len >= sizeof(*rxdesc)) 2062 hostap_dump_rx_header(dev->name, rxdesc); 2063 2064 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && 2065 (!local->monitor_allow_fcserr || 2066 local->iw_mode != IW_MODE_MONITOR)) 2067 goto drop; 2068 2069 if (skb->len > PRISM2_DATA_MAXLEN) { 2070 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", 2071 dev->name, skb->len, PRISM2_DATA_MAXLEN); 2072 goto drop; 2073 } 2074 2075 stats.mac_time = le32_to_cpu(rxdesc->time); 2076 stats.signal = rxdesc->signal - local->rssi_to_dBm; 2077 stats.noise = rxdesc->silence - local->rssi_to_dBm; 2078 stats.rate = rxdesc->rate; 2079 2080 /* Convert Prism2 RX structure into IEEE 802.11 header */ 2081 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); 2082 if (hdrlen > rx_hdrlen) 2083 hdrlen = rx_hdrlen; 2084 2085 memmove(skb_pull(skb, rx_hdrlen - hdrlen), 2086 &rxdesc->frame_control, hdrlen); 2087 2088 hostap_80211_rx(dev, skb, &stats); 2089 return; 2090 2091 drop: 2092 dev_kfree_skb(skb); 2093 } 2094 2095 2096 /* Called only as a tasklet (software IRQ) */ 2097 static void hostap_rx_tasklet(unsigned long data) 2098 { 2099 local_info_t *local = (local_info_t *) data; 2100 struct sk_buff *skb; 2101 2102 while ((skb = skb_dequeue(&local->rx_list)) != NULL) 2103 hostap_rx_skb(local, skb); 2104 } 2105 2106 2107 /* Called only from hardware IRQ */ 2108 static void prism2_alloc_ev(struct net_device *dev) 2109 { 2110 struct hostap_interface *iface; 2111 local_info_t *local; 2112 int idx; 2113 u16 fid; 2114 2115 iface = netdev_priv(dev); 2116 local = iface->local; 2117 2118 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); 2119 2120 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); 2121 2122 spin_lock(&local->txfidlock); 2123 idx = local->next_alloc; 2124 2125 do { 2126 if (local->txfid[idx] == fid) { 2127 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", 2128 idx); 2129 2130 #ifndef final_version 2131 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) 2132 printk("Already released txfid found at idx " 2133 "%d\n", idx); 2134 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) 2135 printk("Already reserved txfid found at idx " 2136 "%d\n", idx); 2137 #endif 2138 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 2139 idx++; 2140 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : 2141 idx; 2142 2143 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && 2144 netif_queue_stopped(dev)) 2145 netif_wake_queue(dev); 2146 2147 spin_unlock(&local->txfidlock); 2148 return; 2149 } 2150 2151 idx++; 2152 if (idx >= PRISM2_TXFID_COUNT) 2153 idx = 0; 2154 } while (idx != local->next_alloc); 2155 2156 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " 2157 "read 0x%04x) for alloc event\n", dev->name, fid, 2158 HFA384X_INW(HFA384X_ALLOCFID_OFF)); 2159 printk(KERN_DEBUG "TXFIDs:"); 2160 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) 2161 printk(" %04x[%04x]", local->txfid[idx], 2162 local->intransmitfid[idx]); 2163 printk("\n"); 2164 spin_unlock(&local->txfidlock); 2165 2166 /* FIX: should probably schedule reset; reference to one txfid was lost 2167 * completely.. Bad things will happen if we run out of txfids 2168 * Actually, this will cause netdev watchdog to notice TX timeout and 2169 * then card reset after all txfids have been leaked. */ 2170 } 2171 2172 2173 /* Called only as a tasklet (software IRQ) */ 2174 static void hostap_tx_callback(local_info_t *local, 2175 struct hfa384x_tx_frame *txdesc, int ok, 2176 char *payload) 2177 { 2178 u16 sw_support, hdrlen, len; 2179 struct sk_buff *skb; 2180 struct hostap_tx_callback_info *cb; 2181 2182 /* Make sure that frame was from us. */ 2183 if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { 2184 printk(KERN_DEBUG "%s: TX callback - foreign frame\n", 2185 local->dev->name); 2186 return; 2187 } 2188 2189 sw_support = le32_to_cpu(txdesc->sw_support); 2190 2191 spin_lock(&local->lock); 2192 cb = local->tx_callback; 2193 while (cb != NULL && cb->idx != sw_support) 2194 cb = cb->next; 2195 spin_unlock(&local->lock); 2196 2197 if (cb == NULL) { 2198 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", 2199 local->dev->name, sw_support); 2200 return; 2201 } 2202 2203 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2204 len = le16_to_cpu(txdesc->data_len); 2205 skb = dev_alloc_skb(hdrlen + len); 2206 if (skb == NULL) { 2207 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " 2208 "skb\n", local->dev->name); 2209 return; 2210 } 2211 2212 skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen); 2213 if (payload) 2214 skb_put_data(skb, payload, len); 2215 2216 skb->dev = local->dev; 2217 skb_reset_mac_header(skb); 2218 2219 cb->func(skb, ok, cb->data); 2220 } 2221 2222 2223 /* Called only as a tasklet (software IRQ) */ 2224 static int hostap_tx_compl_read(local_info_t *local, int error, 2225 struct hfa384x_tx_frame *txdesc, 2226 char **payload) 2227 { 2228 u16 fid, len; 2229 int res, ret = 0; 2230 struct net_device *dev = local->dev; 2231 2232 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); 2233 2234 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); 2235 2236 spin_lock(&local->baplock); 2237 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2238 if (!res) 2239 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); 2240 if (res) { 2241 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " 2242 "read txdesc\n", dev->name, error, fid); 2243 if (res == -ETIMEDOUT) { 2244 schedule_work(&local->reset_queue); 2245 } 2246 ret = -1; 2247 goto fail; 2248 } 2249 if (txdesc->sw_support) { 2250 len = le16_to_cpu(txdesc->data_len); 2251 if (len < PRISM2_DATA_MAXLEN) { 2252 *payload = kmalloc(len, GFP_ATOMIC); 2253 if (*payload == NULL || 2254 hfa384x_from_bap(dev, BAP0, *payload, len)) { 2255 PDEBUG(DEBUG_EXTRA, "%s: could not read TX " 2256 "frame payload\n", dev->name); 2257 kfree(*payload); 2258 *payload = NULL; 2259 ret = -1; 2260 goto fail; 2261 } 2262 } 2263 } 2264 2265 fail: 2266 spin_unlock(&local->baplock); 2267 2268 return ret; 2269 } 2270 2271 2272 /* Called only as a tasklet (software IRQ) */ 2273 static void prism2_tx_ev(local_info_t *local) 2274 { 2275 struct net_device *dev = local->dev; 2276 char *payload = NULL; 2277 struct hfa384x_tx_frame txdesc; 2278 2279 if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) 2280 goto fail; 2281 2282 if (local->frame_dump & PRISM2_DUMP_TX_HDR) { 2283 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " 2284 "retry_count=%d tx_rate=%d seq_ctrl=%d " 2285 "duration_id=%d\n", 2286 dev->name, le16_to_cpu(txdesc.status), 2287 txdesc.retry_count, txdesc.tx_rate, 2288 le16_to_cpu(txdesc.seq_ctrl), 2289 le16_to_cpu(txdesc.duration_id)); 2290 } 2291 2292 if (txdesc.sw_support) 2293 hostap_tx_callback(local, &txdesc, 1, payload); 2294 kfree(payload); 2295 2296 fail: 2297 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); 2298 } 2299 2300 2301 /* Called only as a tasklet (software IRQ) */ 2302 static void hostap_sta_tx_exc_tasklet(unsigned long data) 2303 { 2304 local_info_t *local = (local_info_t *) data; 2305 struct sk_buff *skb; 2306 2307 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { 2308 struct hfa384x_tx_frame *txdesc = 2309 (struct hfa384x_tx_frame *) skb->data; 2310 2311 if (skb->len >= sizeof(*txdesc)) { 2312 /* Convert Prism2 RX structure into IEEE 802.11 header 2313 */ 2314 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2315 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), 2316 &txdesc->frame_control, hdrlen); 2317 2318 hostap_handle_sta_tx_exc(local, skb); 2319 } 2320 dev_kfree_skb(skb); 2321 } 2322 } 2323 2324 2325 /* Called only as a tasklet (software IRQ) */ 2326 static void prism2_txexc(local_info_t *local) 2327 { 2328 struct net_device *dev = local->dev; 2329 u16 status, fc; 2330 int show_dump, res; 2331 char *payload = NULL; 2332 struct hfa384x_tx_frame txdesc; 2333 2334 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; 2335 dev->stats.tx_errors++; 2336 2337 res = hostap_tx_compl_read(local, 1, &txdesc, &payload); 2338 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); 2339 if (res) 2340 return; 2341 2342 status = le16_to_cpu(txdesc.status); 2343 2344 /* We produce a TXDROP event only for retry or lifetime 2345 * exceeded, because that's the only status that really mean 2346 * that this particular node went away. 2347 * Other errors means that *we* screwed up. - Jean II */ 2348 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) 2349 { 2350 union iwreq_data wrqu; 2351 2352 /* Copy 802.11 dest address. */ 2353 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); 2354 wrqu.addr.sa_family = ARPHRD_ETHER; 2355 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); 2356 } else 2357 show_dump = 1; 2358 2359 if (local->iw_mode == IW_MODE_MASTER || 2360 local->iw_mode == IW_MODE_REPEAT || 2361 local->wds_type & HOSTAP_WDS_AP_CLIENT) { 2362 struct sk_buff *skb; 2363 skb = dev_alloc_skb(sizeof(txdesc)); 2364 if (skb) { 2365 skb_put_data(skb, &txdesc, sizeof(txdesc)); 2366 skb_queue_tail(&local->sta_tx_exc_list, skb); 2367 tasklet_schedule(&local->sta_tx_exc_tasklet); 2368 } 2369 } 2370 2371 if (txdesc.sw_support) 2372 hostap_tx_callback(local, &txdesc, 0, payload); 2373 kfree(payload); 2374 2375 if (!show_dump) 2376 return; 2377 2378 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" 2379 " tx_control=%04x\n", 2380 dev->name, status, 2381 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", 2382 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", 2383 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", 2384 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", 2385 le16_to_cpu(txdesc.tx_control)); 2386 2387 fc = le16_to_cpu(txdesc.frame_control); 2388 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " 2389 "(%s%s%s::%d%s%s)\n", 2390 txdesc.retry_count, txdesc.tx_rate, fc, 2391 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", 2392 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", 2393 ieee80211_is_data(txdesc.frame_control) ? "Data" : "", 2394 (fc & IEEE80211_FCTL_STYPE) >> 4, 2395 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", 2396 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); 2397 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", 2398 txdesc.addr1, txdesc.addr2, 2399 txdesc.addr3, txdesc.addr4); 2400 } 2401 2402 2403 /* Called only as a tasklet (software IRQ) */ 2404 static void hostap_info_tasklet(unsigned long data) 2405 { 2406 local_info_t *local = (local_info_t *) data; 2407 struct sk_buff *skb; 2408 2409 while ((skb = skb_dequeue(&local->info_list)) != NULL) { 2410 hostap_info_process(local, skb); 2411 dev_kfree_skb(skb); 2412 } 2413 } 2414 2415 2416 /* Called only as a tasklet (software IRQ) */ 2417 static void prism2_info(local_info_t *local) 2418 { 2419 struct net_device *dev = local->dev; 2420 u16 fid; 2421 int res, left; 2422 struct hfa384x_info_frame info; 2423 struct sk_buff *skb; 2424 2425 fid = HFA384X_INW(HFA384X_INFOFID_OFF); 2426 2427 spin_lock(&local->baplock); 2428 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2429 if (!res) 2430 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); 2431 if (res) { 2432 spin_unlock(&local->baplock); 2433 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", 2434 fid); 2435 if (res == -ETIMEDOUT) { 2436 schedule_work(&local->reset_queue); 2437 } 2438 goto out; 2439 } 2440 2441 left = (le16_to_cpu(info.len) - 1) * 2; 2442 2443 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { 2444 /* data register seems to give 0x8000 in some error cases even 2445 * though busy bit is not set in offset register; 2446 * in addition, length must be at least 1 due to type field */ 2447 spin_unlock(&local->baplock); 2448 printk(KERN_DEBUG "%s: Received info frame with invalid " 2449 "length 0x%04x (type 0x%04x)\n", dev->name, 2450 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2451 goto out; 2452 } 2453 2454 skb = dev_alloc_skb(sizeof(info) + left); 2455 if (skb == NULL) { 2456 spin_unlock(&local->baplock); 2457 printk(KERN_DEBUG "%s: Could not allocate skb for info " 2458 "frame\n", dev->name); 2459 goto out; 2460 } 2461 2462 skb_put_data(skb, &info, sizeof(info)); 2463 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) 2464 { 2465 spin_unlock(&local->baplock); 2466 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " 2467 "len=0x%04x, type=0x%04x\n", dev->name, fid, 2468 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2469 dev_kfree_skb(skb); 2470 goto out; 2471 } 2472 spin_unlock(&local->baplock); 2473 2474 skb_queue_tail(&local->info_list, skb); 2475 tasklet_schedule(&local->info_tasklet); 2476 2477 out: 2478 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); 2479 } 2480 2481 2482 /* Called only as a tasklet (software IRQ) */ 2483 static void hostap_bap_tasklet(unsigned long data) 2484 { 2485 local_info_t *local = (local_info_t *) data; 2486 struct net_device *dev = local->dev; 2487 u16 ev; 2488 int frames = 30; 2489 2490 if (local->func->card_present && !local->func->card_present(local)) 2491 return; 2492 2493 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2494 2495 /* Process all pending BAP events without generating new interrupts 2496 * for them */ 2497 while (frames-- > 0) { 2498 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2499 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) 2500 break; 2501 if (ev & HFA384X_EV_RX) 2502 prism2_rx(local); 2503 if (ev & HFA384X_EV_INFO) 2504 prism2_info(local); 2505 if (ev & HFA384X_EV_TX) 2506 prism2_tx_ev(local); 2507 if (ev & HFA384X_EV_TXEXC) 2508 prism2_txexc(local); 2509 } 2510 2511 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2512 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2513 2514 /* Enable interrupts for new BAP events */ 2515 hfa384x_events_all(dev); 2516 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2517 } 2518 2519 2520 /* Called only from hardware IRQ */ 2521 static void prism2_infdrop(struct net_device *dev) 2522 { 2523 static unsigned long last_inquire = 0; 2524 2525 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); 2526 2527 /* some firmware versions seem to get stuck with 2528 * full CommTallies in high traffic load cases; every 2529 * packet will then cause INFDROP event and CommTallies 2530 * info frame will not be sent automatically. Try to 2531 * get out of this state by inquiring CommTallies. */ 2532 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { 2533 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, 2534 HFA384X_INFO_COMMTALLIES, NULL, 0); 2535 last_inquire = jiffies; 2536 } 2537 } 2538 2539 2540 /* Called only from hardware IRQ */ 2541 static void prism2_ev_tick(struct net_device *dev) 2542 { 2543 struct hostap_interface *iface; 2544 local_info_t *local; 2545 u16 evstat, inten; 2546 static int prev_stuck = 0; 2547 2548 iface = netdev_priv(dev); 2549 local = iface->local; 2550 2551 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && 2552 local->last_tick_timer) { 2553 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 2554 inten = HFA384X_INW(HFA384X_INTEN_OFF); 2555 if (!prev_stuck) { 2556 printk(KERN_INFO "%s: SW TICK stuck? " 2557 "bits=0x%lx EvStat=%04x IntEn=%04x\n", 2558 dev->name, local->bits, evstat, inten); 2559 } 2560 local->sw_tick_stuck++; 2561 if ((evstat & HFA384X_BAP0_EVENTS) && 2562 (inten & HFA384X_BAP0_EVENTS)) { 2563 printk(KERN_INFO "%s: trying to recover from IRQ " 2564 "hang\n", dev->name); 2565 hfa384x_events_no_bap0(dev); 2566 } 2567 prev_stuck = 1; 2568 } else 2569 prev_stuck = 0; 2570 } 2571 2572 2573 /* Called only from hardware IRQ */ 2574 static void prism2_check_magic(local_info_t *local) 2575 { 2576 /* at least PCI Prism2.5 with bus mastering seems to sometimes 2577 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the 2578 * register once or twice seems to get the correct value.. PCI cards 2579 * cannot anyway be removed during normal operation, so there is not 2580 * really any need for this verification with them. */ 2581 2582 #ifndef PRISM2_PCI 2583 #ifndef final_version 2584 static unsigned long last_magic_err = 0; 2585 struct net_device *dev = local->dev; 2586 2587 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 2588 if (!local->hw_ready) 2589 return; 2590 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2591 if (time_after(jiffies, last_magic_err + 10 * HZ)) { 2592 printk("%s: Interrupt, but SWSUPPORT0 does not match: " 2593 "%04X != %04X - card removed?\n", dev->name, 2594 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2595 HFA384X_MAGIC); 2596 last_magic_err = jiffies; 2597 } else if (net_ratelimit()) { 2598 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " 2599 "MAGIC=%04x\n", dev->name, 2600 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2601 HFA384X_MAGIC); 2602 } 2603 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) 2604 schedule_work(&local->reset_queue); 2605 return; 2606 } 2607 #endif /* final_version */ 2608 #endif /* !PRISM2_PCI */ 2609 } 2610 2611 2612 /* Called only from hardware IRQ */ 2613 static irqreturn_t prism2_interrupt(int irq, void *dev_id) 2614 { 2615 struct net_device *dev = dev_id; 2616 struct hostap_interface *iface; 2617 local_info_t *local; 2618 int events = 0; 2619 u16 ev; 2620 2621 iface = netdev_priv(dev); 2622 local = iface->local; 2623 2624 /* Detect early interrupt before driver is fully configured */ 2625 spin_lock(&local->irq_init_lock); 2626 if (!dev->base_addr) { 2627 if (net_ratelimit()) { 2628 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", 2629 dev->name); 2630 } 2631 spin_unlock(&local->irq_init_lock); 2632 return IRQ_HANDLED; 2633 } 2634 spin_unlock(&local->irq_init_lock); 2635 2636 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); 2637 2638 if (local->func->card_present && !local->func->card_present(local)) { 2639 if (net_ratelimit()) { 2640 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", 2641 dev->name); 2642 } 2643 return IRQ_HANDLED; 2644 } 2645 2646 prism2_check_magic(local); 2647 2648 for (;;) { 2649 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2650 if (ev == 0xffff) { 2651 if (local->shutdown) 2652 return IRQ_HANDLED; 2653 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2654 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", 2655 dev->name); 2656 return IRQ_HANDLED; 2657 } 2658 2659 ev &= HFA384X_INW(HFA384X_INTEN_OFF); 2660 if (ev == 0) 2661 break; 2662 2663 if (ev & HFA384X_EV_CMD) { 2664 prism2_cmd_ev(dev); 2665 } 2666 2667 /* Above events are needed even before hw is ready, but other 2668 * events should be skipped during initialization. This may 2669 * change for AllocEv if allocate_fid is implemented without 2670 * busy waiting. */ 2671 if (!local->hw_ready || local->hw_resetting || 2672 !local->dev_enabled) { 2673 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2674 if (ev & HFA384X_EV_CMD) 2675 goto next_event; 2676 if ((ev & HFA384X_EVENT_MASK) == 0) 2677 return IRQ_HANDLED; 2678 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && 2679 net_ratelimit()) { 2680 printk(KERN_DEBUG "%s: prism2_interrupt: hw " 2681 "not ready; skipping events 0x%04x " 2682 "(IntEn=0x%04x)%s%s%s\n", 2683 dev->name, ev, 2684 HFA384X_INW(HFA384X_INTEN_OFF), 2685 !local->hw_ready ? " (!hw_ready)" : "", 2686 local->hw_resetting ? 2687 " (hw_resetting)" : "", 2688 !local->dev_enabled ? 2689 " (!dev_enabled)" : ""); 2690 } 2691 HFA384X_OUTW(ev, HFA384X_EVACK_OFF); 2692 return IRQ_HANDLED; 2693 } 2694 2695 if (ev & HFA384X_EV_TICK) { 2696 prism2_ev_tick(dev); 2697 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); 2698 } 2699 2700 if (ev & HFA384X_EV_ALLOC) { 2701 prism2_alloc_ev(dev); 2702 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 2703 } 2704 2705 /* Reading data from the card is quite time consuming, so do it 2706 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed 2707 * and unmasked after needed data has been read completely. */ 2708 if (ev & HFA384X_BAP0_EVENTS) { 2709 hfa384x_events_no_bap0(dev); 2710 tasklet_schedule(&local->bap_tasklet); 2711 } 2712 2713 #ifndef final_version 2714 if (ev & HFA384X_EV_WTERR) { 2715 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); 2716 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); 2717 } 2718 #endif /* final_version */ 2719 2720 if (ev & HFA384X_EV_INFDROP) { 2721 prism2_infdrop(dev); 2722 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); 2723 } 2724 2725 next_event: 2726 events++; 2727 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { 2728 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " 2729 "(EvStat=0x%04x)\n", 2730 PRISM2_MAX_INTERRUPT_EVENTS, 2731 HFA384X_INW(HFA384X_EVSTAT_OFF)); 2732 break; 2733 } 2734 } 2735 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); 2736 return IRQ_RETVAL(events); 2737 } 2738 2739 2740 static void prism2_check_sta_fw_version(local_info_t *local) 2741 { 2742 struct hfa384x_comp_ident comp; 2743 int id, variant, major, minor; 2744 2745 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, 2746 &comp, sizeof(comp), 1) < 0) 2747 return; 2748 2749 local->fw_ap = 0; 2750 id = le16_to_cpu(comp.id); 2751 if (id != HFA384X_COMP_ID_STA) { 2752 if (id == HFA384X_COMP_ID_FW_AP) 2753 local->fw_ap = 1; 2754 return; 2755 } 2756 2757 major = __le16_to_cpu(comp.major); 2758 minor = __le16_to_cpu(comp.minor); 2759 variant = __le16_to_cpu(comp.variant); 2760 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); 2761 2762 /* Station firmware versions before 1.4.x seem to have a bug in 2763 * firmware-based WEP encryption when using Host AP mode, so use 2764 * host_encrypt as a default for them. Firmware version 1.4.9 is the 2765 * first one that has been seen to produce correct encryption, but the 2766 * bug might be fixed before that (although, at least 1.4.2 is broken). 2767 */ 2768 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); 2769 2770 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && 2771 !local->fw_encrypt_ok) { 2772 printk(KERN_DEBUG "%s: defaulting to host-based encryption as " 2773 "a workaround for firmware bug in Host AP mode WEP\n", 2774 local->dev->name); 2775 local->host_encrypt = 1; 2776 } 2777 2778 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken 2779 * in station firmware versions before 1.5.x. With these versions, the 2780 * driver uses a workaround with bogus frame format (4th address after 2781 * the payload). This is not compatible with other AP devices. Since 2782 * the firmware bug is fixed in the latest station firmware versions, 2783 * automatically enable standard compliant mode for cards using station 2784 * firmware version 1.5.0 or newer. */ 2785 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) 2786 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; 2787 else { 2788 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " 2789 "workaround for firmware bug in Host AP mode WDS\n", 2790 local->dev->name); 2791 } 2792 2793 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); 2794 } 2795 2796 2797 static void hostap_passive_scan(struct timer_list *t) 2798 { 2799 local_info_t *local = from_timer(local, t, passive_scan_timer); 2800 struct net_device *dev = local->dev; 2801 u16 chan; 2802 2803 if (local->passive_scan_interval <= 0) 2804 return; 2805 2806 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { 2807 int max_tries = 16; 2808 2809 /* Even though host system does not really know when the WLAN 2810 * MAC is sending frames, try to avoid changing channels for 2811 * passive scanning when a host-generated frame is being 2812 * transmitted */ 2813 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 2814 printk(KERN_DEBUG "%s: passive scan detected pending " 2815 "TX - delaying\n", dev->name); 2816 local->passive_scan_timer.expires = jiffies + HZ / 10; 2817 add_timer(&local->passive_scan_timer); 2818 return; 2819 } 2820 2821 do { 2822 local->passive_scan_channel++; 2823 if (local->passive_scan_channel > 14) 2824 local->passive_scan_channel = 1; 2825 max_tries--; 2826 } while (!(local->channel_mask & 2827 (1 << (local->passive_scan_channel - 1))) && 2828 max_tries > 0); 2829 2830 if (max_tries == 0) { 2831 printk(KERN_INFO "%s: no allowed passive scan channels" 2832 " found\n", dev->name); 2833 return; 2834 } 2835 2836 printk(KERN_DEBUG "%s: passive scan channel %d\n", 2837 dev->name, local->passive_scan_channel); 2838 chan = local->passive_scan_channel; 2839 local->passive_scan_state = PASSIVE_SCAN_WAIT; 2840 local->passive_scan_timer.expires = jiffies + HZ / 10; 2841 } else { 2842 chan = local->channel; 2843 local->passive_scan_state = PASSIVE_SCAN_LISTEN; 2844 local->passive_scan_timer.expires = jiffies + 2845 local->passive_scan_interval * HZ; 2846 } 2847 2848 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | 2849 (HFA384X_TEST_CHANGE_CHANNEL << 8), 2850 chan, NULL, 0)) 2851 printk(KERN_ERR "%s: passive scan channel set %d " 2852 "failed\n", dev->name, chan); 2853 2854 add_timer(&local->passive_scan_timer); 2855 } 2856 2857 2858 /* Called only as a scheduled task when communications quality values should 2859 * be updated. */ 2860 static void handle_comms_qual_update(struct work_struct *work) 2861 { 2862 local_info_t *local = 2863 container_of(work, local_info_t, comms_qual_update); 2864 prism2_update_comms_qual(local->dev); 2865 } 2866 2867 2868 /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is 2869 * used to monitor that local->last_tick_timer is being updated. If not, 2870 * interrupt busy-loop is assumed and driver tries to recover by masking out 2871 * some events. */ 2872 static void hostap_tick_timer(struct timer_list *t) 2873 { 2874 static unsigned long last_inquire = 0; 2875 local_info_t *local = from_timer(local, t, tick_timer); 2876 local->last_tick_timer = jiffies; 2877 2878 /* Inquire CommTallies every 10 seconds to keep the statistics updated 2879 * more often during low load and when using 32-bit tallies. */ 2880 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && 2881 !local->hw_downloading && local->hw_ready && 2882 !local->hw_resetting && local->dev_enabled) { 2883 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, 2884 HFA384X_INFO_COMMTALLIES, NULL, 0); 2885 last_inquire = jiffies; 2886 } 2887 2888 if ((local->last_comms_qual_update == 0 || 2889 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && 2890 (local->iw_mode == IW_MODE_INFRA || 2891 local->iw_mode == IW_MODE_ADHOC)) { 2892 schedule_work(&local->comms_qual_update); 2893 } 2894 2895 local->tick_timer.expires = jiffies + 2 * HZ; 2896 add_timer(&local->tick_timer); 2897 } 2898 2899 2900 #ifndef PRISM2_NO_PROCFS_DEBUG 2901 static int prism2_registers_proc_show(struct seq_file *m, void *v) 2902 { 2903 local_info_t *local = m->private; 2904 2905 #define SHOW_REG(n) \ 2906 seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) 2907 2908 SHOW_REG(CMD); 2909 SHOW_REG(PARAM0); 2910 SHOW_REG(PARAM1); 2911 SHOW_REG(PARAM2); 2912 SHOW_REG(STATUS); 2913 SHOW_REG(RESP0); 2914 SHOW_REG(RESP1); 2915 SHOW_REG(RESP2); 2916 SHOW_REG(INFOFID); 2917 SHOW_REG(CONTROL); 2918 SHOW_REG(SELECT0); 2919 SHOW_REG(SELECT1); 2920 SHOW_REG(OFFSET0); 2921 SHOW_REG(OFFSET1); 2922 SHOW_REG(RXFID); 2923 SHOW_REG(ALLOCFID); 2924 SHOW_REG(TXCOMPLFID); 2925 SHOW_REG(SWSUPPORT0); 2926 SHOW_REG(SWSUPPORT1); 2927 SHOW_REG(SWSUPPORT2); 2928 SHOW_REG(EVSTAT); 2929 SHOW_REG(INTEN); 2930 SHOW_REG(EVACK); 2931 /* Do not read data registers, because they change the state of the 2932 * MAC (offset += 2) */ 2933 /* SHOW_REG(DATA0); */ 2934 /* SHOW_REG(DATA1); */ 2935 SHOW_REG(AUXPAGE); 2936 SHOW_REG(AUXOFFSET); 2937 /* SHOW_REG(AUXDATA); */ 2938 #ifdef PRISM2_PCI 2939 SHOW_REG(PCICOR); 2940 SHOW_REG(PCIHCR); 2941 SHOW_REG(PCI_M0_ADDRH); 2942 SHOW_REG(PCI_M0_ADDRL); 2943 SHOW_REG(PCI_M0_LEN); 2944 SHOW_REG(PCI_M0_CTL); 2945 SHOW_REG(PCI_STATUS); 2946 SHOW_REG(PCI_M1_ADDRH); 2947 SHOW_REG(PCI_M1_ADDRL); 2948 SHOW_REG(PCI_M1_LEN); 2949 SHOW_REG(PCI_M1_CTL); 2950 #endif /* PRISM2_PCI */ 2951 2952 return 0; 2953 } 2954 2955 static int prism2_registers_proc_open(struct inode *inode, struct file *file) 2956 { 2957 return single_open(file, prism2_registers_proc_show, PDE_DATA(inode)); 2958 } 2959 2960 static const struct file_operations prism2_registers_proc_fops = { 2961 .open = prism2_registers_proc_open, 2962 .read = seq_read, 2963 .llseek = seq_lseek, 2964 .release = single_release, 2965 }; 2966 2967 #endif /* PRISM2_NO_PROCFS_DEBUG */ 2968 2969 2970 struct set_tim_data { 2971 struct list_head list; 2972 int aid; 2973 int set; 2974 }; 2975 2976 static int prism2_set_tim(struct net_device *dev, int aid, int set) 2977 { 2978 struct list_head *ptr; 2979 struct set_tim_data *new_entry; 2980 struct hostap_interface *iface; 2981 local_info_t *local; 2982 2983 iface = netdev_priv(dev); 2984 local = iface->local; 2985 2986 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); 2987 if (new_entry == NULL) 2988 return -ENOMEM; 2989 2990 new_entry->aid = aid; 2991 new_entry->set = set; 2992 2993 spin_lock_bh(&local->set_tim_lock); 2994 list_for_each(ptr, &local->set_tim_list) { 2995 struct set_tim_data *entry = 2996 list_entry(ptr, struct set_tim_data, list); 2997 if (entry->aid == aid) { 2998 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " 2999 "set=%d ==> %d\n", 3000 local->dev->name, aid, entry->set, set); 3001 entry->set = set; 3002 kfree(new_entry); 3003 new_entry = NULL; 3004 break; 3005 } 3006 } 3007 if (new_entry) 3008 list_add_tail(&new_entry->list, &local->set_tim_list); 3009 spin_unlock_bh(&local->set_tim_lock); 3010 3011 schedule_work(&local->set_tim_queue); 3012 3013 return 0; 3014 } 3015 3016 3017 static void handle_set_tim_queue(struct work_struct *work) 3018 { 3019 local_info_t *local = container_of(work, local_info_t, set_tim_queue); 3020 struct set_tim_data *entry; 3021 u16 val; 3022 3023 for (;;) { 3024 entry = NULL; 3025 spin_lock_bh(&local->set_tim_lock); 3026 if (!list_empty(&local->set_tim_list)) { 3027 entry = list_entry(local->set_tim_list.next, 3028 struct set_tim_data, list); 3029 list_del(&entry->list); 3030 } 3031 spin_unlock_bh(&local->set_tim_lock); 3032 if (!entry) 3033 break; 3034 3035 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", 3036 local->dev->name, entry->aid, entry->set); 3037 3038 val = entry->aid; 3039 if (entry->set) 3040 val |= 0x8000; 3041 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { 3042 printk(KERN_DEBUG "%s: set_tim failed (aid=%d " 3043 "set=%d)\n", 3044 local->dev->name, entry->aid, entry->set); 3045 } 3046 3047 kfree(entry); 3048 } 3049 } 3050 3051 3052 static void prism2_clear_set_tim_queue(local_info_t *local) 3053 { 3054 struct list_head *ptr, *n; 3055 3056 list_for_each_safe(ptr, n, &local->set_tim_list) { 3057 struct set_tim_data *entry; 3058 entry = list_entry(ptr, struct set_tim_data, list); 3059 list_del(&entry->list); 3060 kfree(entry); 3061 } 3062 } 3063 3064 3065 /* 3066 * HostAP uses two layers of net devices, where the inner 3067 * layer gets called all the time from the outer layer. 3068 * This is a natural nesting, which needs a split lock type. 3069 */ 3070 static struct lock_class_key hostap_netdev_xmit_lock_key; 3071 static struct lock_class_key hostap_netdev_addr_lock_key; 3072 3073 static void prism2_set_lockdep_class_one(struct net_device *dev, 3074 struct netdev_queue *txq, 3075 void *_unused) 3076 { 3077 lockdep_set_class(&txq->_xmit_lock, 3078 &hostap_netdev_xmit_lock_key); 3079 } 3080 3081 static void prism2_set_lockdep_class(struct net_device *dev) 3082 { 3083 lockdep_set_class(&dev->addr_list_lock, 3084 &hostap_netdev_addr_lock_key); 3085 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); 3086 } 3087 3088 static struct net_device * 3089 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, 3090 struct device *sdev) 3091 { 3092 struct net_device *dev; 3093 struct hostap_interface *iface; 3094 struct local_info *local; 3095 int len, i, ret; 3096 3097 if (funcs == NULL) 3098 return NULL; 3099 3100 len = strlen(dev_template); 3101 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { 3102 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", 3103 dev_template); 3104 return NULL; 3105 } 3106 3107 len = sizeof(struct hostap_interface) + 3108 3 + sizeof(struct local_info) + 3109 3 + sizeof(struct ap_data); 3110 3111 dev = alloc_etherdev(len); 3112 if (dev == NULL) 3113 return NULL; 3114 3115 iface = netdev_priv(dev); 3116 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); 3117 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); 3118 local->dev = iface->dev = dev; 3119 iface->local = local; 3120 iface->type = HOSTAP_INTERFACE_MASTER; 3121 INIT_LIST_HEAD(&local->hostap_interfaces); 3122 3123 local->hw_module = THIS_MODULE; 3124 3125 #ifdef PRISM2_IO_DEBUG 3126 local->io_debug_enabled = 1; 3127 #endif /* PRISM2_IO_DEBUG */ 3128 3129 local->func = funcs; 3130 local->func->cmd = hfa384x_cmd; 3131 local->func->read_regs = hfa384x_read_regs; 3132 local->func->get_rid = hfa384x_get_rid; 3133 local->func->set_rid = hfa384x_set_rid; 3134 local->func->hw_enable = prism2_hw_enable; 3135 local->func->hw_config = prism2_hw_config; 3136 local->func->hw_reset = prism2_hw_reset; 3137 local->func->hw_shutdown = prism2_hw_shutdown; 3138 local->func->reset_port = prism2_reset_port; 3139 local->func->schedule_reset = prism2_schedule_reset; 3140 #ifdef PRISM2_DOWNLOAD_SUPPORT 3141 local->func->read_aux_fops = &prism2_download_aux_dump_proc_fops; 3142 local->func->download = prism2_download; 3143 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3144 local->func->tx = prism2_tx_80211; 3145 local->func->set_tim = prism2_set_tim; 3146 local->func->need_tx_headroom = 0; /* no need to add txdesc in 3147 * skb->data (FIX: maybe for DMA bus 3148 * mastering? */ 3149 3150 local->mtu = mtu; 3151 3152 rwlock_init(&local->iface_lock); 3153 spin_lock_init(&local->txfidlock); 3154 spin_lock_init(&local->cmdlock); 3155 spin_lock_init(&local->baplock); 3156 spin_lock_init(&local->lock); 3157 spin_lock_init(&local->irq_init_lock); 3158 mutex_init(&local->rid_bap_mtx); 3159 3160 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) 3161 card_idx = 0; 3162 local->card_idx = card_idx; 3163 3164 len = strlen(essid); 3165 memcpy(local->essid, essid, 3166 len > MAX_SSID_LEN ? MAX_SSID_LEN : len); 3167 local->essid[MAX_SSID_LEN] = '\0'; 3168 i = GET_INT_PARM(iw_mode, card_idx); 3169 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || 3170 i == IW_MODE_MONITOR) { 3171 local->iw_mode = i; 3172 } else { 3173 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " 3174 "IW_MODE_MASTER\n", i); 3175 local->iw_mode = IW_MODE_MASTER; 3176 } 3177 local->channel = GET_INT_PARM(channel, card_idx); 3178 local->beacon_int = GET_INT_PARM(beacon_int, card_idx); 3179 local->dtim_period = GET_INT_PARM(dtim_period, card_idx); 3180 local->wds_max_connections = 16; 3181 local->tx_control = HFA384X_TX_CTRL_FLAGS; 3182 local->manual_retry_count = -1; 3183 local->rts_threshold = 2347; 3184 local->fragm_threshold = 2346; 3185 local->rssi_to_dBm = 100; /* default; to be overriden by 3186 * cnfDbmAdjust, if available */ 3187 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; 3188 local->sram_type = -1; 3189 local->scan_channel_mask = 0xffff; 3190 local->monitor_type = PRISM2_MONITOR_RADIOTAP; 3191 3192 /* Initialize task queue structures */ 3193 INIT_WORK(&local->reset_queue, handle_reset_queue); 3194 INIT_WORK(&local->set_multicast_list_queue, 3195 hostap_set_multicast_list_queue); 3196 3197 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); 3198 INIT_LIST_HEAD(&local->set_tim_list); 3199 spin_lock_init(&local->set_tim_lock); 3200 3201 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); 3202 3203 /* Initialize tasklets for handling hardware IRQ related operations 3204 * outside hw IRQ handler */ 3205 #define HOSTAP_TASKLET_INIT(q, f, d) \ 3206 do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ 3207 while (0) 3208 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, 3209 (unsigned long) local); 3210 3211 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, 3212 (unsigned long) local); 3213 hostap_info_init(local); 3214 3215 HOSTAP_TASKLET_INIT(&local->rx_tasklet, 3216 hostap_rx_tasklet, (unsigned long) local); 3217 skb_queue_head_init(&local->rx_list); 3218 3219 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, 3220 hostap_sta_tx_exc_tasklet, (unsigned long) local); 3221 skb_queue_head_init(&local->sta_tx_exc_list); 3222 3223 INIT_LIST_HEAD(&local->cmd_queue); 3224 init_waitqueue_head(&local->hostscan_wq); 3225 3226 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); 3227 3228 timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0); 3229 timer_setup(&local->tick_timer, hostap_tick_timer, 0); 3230 local->tick_timer.expires = jiffies + 2 * HZ; 3231 add_timer(&local->tick_timer); 3232 3233 INIT_LIST_HEAD(&local->bss_list); 3234 3235 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); 3236 3237 dev->type = ARPHRD_IEEE80211; 3238 dev->header_ops = &hostap_80211_ops; 3239 3240 rtnl_lock(); 3241 ret = dev_alloc_name(dev, "wifi%d"); 3242 SET_NETDEV_DEV(dev, sdev); 3243 if (ret >= 0) 3244 ret = register_netdevice(dev); 3245 3246 prism2_set_lockdep_class(dev); 3247 rtnl_unlock(); 3248 if (ret < 0) { 3249 printk(KERN_WARNING "%s: register netdevice failed!\n", 3250 dev_info); 3251 goto fail; 3252 } 3253 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); 3254 3255 hostap_init_data(local); 3256 return dev; 3257 3258 fail: 3259 free_netdev(dev); 3260 return NULL; 3261 } 3262 3263 3264 static int hostap_hw_ready(struct net_device *dev) 3265 { 3266 struct hostap_interface *iface; 3267 struct local_info *local; 3268 3269 iface = netdev_priv(dev); 3270 local = iface->local; 3271 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, 3272 "", dev_template); 3273 3274 if (local->ddev) { 3275 if (local->iw_mode == IW_MODE_INFRA || 3276 local->iw_mode == IW_MODE_ADHOC) { 3277 netif_carrier_off(local->dev); 3278 netif_carrier_off(local->ddev); 3279 } 3280 hostap_init_proc(local); 3281 #ifndef PRISM2_NO_PROCFS_DEBUG 3282 proc_create_data("registers", 0, local->proc, 3283 &prism2_registers_proc_fops, local); 3284 #endif /* PRISM2_NO_PROCFS_DEBUG */ 3285 hostap_init_ap_proc(local); 3286 return 0; 3287 } 3288 3289 return -1; 3290 } 3291 3292 3293 static void prism2_free_local_data(struct net_device *dev) 3294 { 3295 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; 3296 int i; 3297 struct hostap_interface *iface; 3298 struct local_info *local; 3299 struct list_head *ptr, *n; 3300 3301 if (dev == NULL) 3302 return; 3303 3304 iface = netdev_priv(dev); 3305 local = iface->local; 3306 3307 /* Unregister all netdevs before freeing local data. */ 3308 list_for_each_safe(ptr, n, &local->hostap_interfaces) { 3309 iface = list_entry(ptr, struct hostap_interface, list); 3310 if (iface->type == HOSTAP_INTERFACE_MASTER) { 3311 /* special handling for this interface below */ 3312 continue; 3313 } 3314 hostap_remove_interface(iface->dev, 0, 1); 3315 } 3316 3317 unregister_netdev(local->dev); 3318 3319 flush_work(&local->reset_queue); 3320 flush_work(&local->set_multicast_list_queue); 3321 flush_work(&local->set_tim_queue); 3322 #ifndef PRISM2_NO_STATION_MODES 3323 flush_work(&local->info_queue); 3324 #endif 3325 flush_work(&local->comms_qual_update); 3326 3327 lib80211_crypt_info_free(&local->crypt_info); 3328 3329 if (timer_pending(&local->passive_scan_timer)) 3330 del_timer(&local->passive_scan_timer); 3331 3332 if (timer_pending(&local->tick_timer)) 3333 del_timer(&local->tick_timer); 3334 3335 prism2_clear_cmd_queue(local); 3336 3337 skb_queue_purge(&local->info_list); 3338 skb_queue_purge(&local->rx_list); 3339 skb_queue_purge(&local->sta_tx_exc_list); 3340 3341 if (local->dev_enabled) 3342 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 3343 3344 if (local->ap != NULL) 3345 hostap_free_data(local->ap); 3346 3347 #ifndef PRISM2_NO_PROCFS_DEBUG 3348 if (local->proc != NULL) 3349 remove_proc_entry("registers", local->proc); 3350 #endif /* PRISM2_NO_PROCFS_DEBUG */ 3351 hostap_remove_proc(local); 3352 3353 tx_cb = local->tx_callback; 3354 while (tx_cb != NULL) { 3355 tx_cb_prev = tx_cb; 3356 tx_cb = tx_cb->next; 3357 kfree(tx_cb_prev); 3358 } 3359 3360 hostap_set_hostapd(local, 0, 0); 3361 hostap_set_hostapd_sta(local, 0, 0); 3362 3363 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { 3364 if (local->frag_cache[i].skb != NULL) 3365 dev_kfree_skb(local->frag_cache[i].skb); 3366 } 3367 3368 #ifdef PRISM2_DOWNLOAD_SUPPORT 3369 prism2_download_free_data(local->dl_pri); 3370 prism2_download_free_data(local->dl_sec); 3371 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3372 3373 prism2_clear_set_tim_queue(local); 3374 3375 list_for_each_safe(ptr, n, &local->bss_list) { 3376 struct hostap_bss_info *bss = 3377 list_entry(ptr, struct hostap_bss_info, list); 3378 kfree(bss); 3379 } 3380 3381 kfree(local->pda); 3382 kfree(local->last_scan_results); 3383 kfree(local->generic_elem); 3384 3385 free_netdev(local->dev); 3386 } 3387 3388 3389 #if (defined(PRISM2_PCI) && defined(CONFIG_PM)) || defined(PRISM2_PCCARD) 3390 static void prism2_suspend(struct net_device *dev) 3391 { 3392 struct hostap_interface *iface; 3393 struct local_info *local; 3394 union iwreq_data wrqu; 3395 3396 iface = netdev_priv(dev); 3397 local = iface->local; 3398 3399 /* Send disconnect event, e.g., to trigger reassociation after resume 3400 * if wpa_supplicant is used. */ 3401 memset(&wrqu, 0, sizeof(wrqu)); 3402 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3403 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); 3404 3405 /* Disable hardware and firmware */ 3406 prism2_hw_shutdown(dev, 0); 3407 } 3408 #endif /* (PRISM2_PCI && CONFIG_PM) || PRISM2_PCCARD */ 3409 3410 3411 /* These might at some point be compiled separately and used as separate 3412 * kernel modules or linked into one */ 3413 #ifdef PRISM2_DOWNLOAD_SUPPORT 3414 #include "hostap_download.c" 3415 #endif /* PRISM2_DOWNLOAD_SUPPORT */ 3416 3417 #ifdef PRISM2_CALLBACK 3418 /* External hostap_callback.c file can be used to, e.g., blink activity led. 3419 * This can use platform specific code and must define prism2_callback() 3420 * function (if PRISM2_CALLBACK is not defined, these function calls are not 3421 * used. */ 3422 #include "hostap_callback.c" 3423 #endif /* PRISM2_CALLBACK */ 3424