1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Host AP (software wireless LAN access point) driver for 4 * Intersil Prism2/2.5/3. 5 * 6 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 7 * <j@w1.fi> 8 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> 9 * 10 * FIX: 11 * - there is currently no way of associating TX packets to correct wds device 12 * when TX Exc/OK event occurs, so all tx_packets and some 13 * tx_errors/tx_dropped are added to the main netdevice; using sw_support 14 * field in txdesc might be used to fix this (using Alloc event to increment 15 * tx_packets would need some further info in txfid table) 16 * 17 * Buffer Access Path (BAP) usage: 18 * Prism2 cards have two separate BAPs for accessing the card memory. These 19 * should allow concurrent access to two different frames and the driver 20 * previously used BAP0 for sending data and BAP1 for receiving data. 21 * However, there seems to be number of issues with concurrent access and at 22 * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI 23 * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between 24 * host and card memories. BAP0 accesses are protected with local->baplock 25 * (spin_lock_bh) to prevent concurrent use. 26 */ 27 28 29 30#include <asm/delay.h> 31#include <linux/uaccess.h> 32 33#include <linux/slab.h> 34#include <linux/netdevice.h> 35#include <linux/etherdevice.h> 36#include <linux/proc_fs.h> 37#include <linux/seq_file.h> 38#include <linux/if_arp.h> 39#include <linux/delay.h> 40#include <linux/random.h> 41#include <linux/wait.h> 42#include <linux/sched/signal.h> 43#include <linux/rtnetlink.h> 44#include <linux/wireless.h> 45#include <net/iw_handler.h> 46#include <net/lib80211.h> 47#include <asm/irq.h> 48 49#include "hostap_80211.h" 50#include "hostap.h" 51#include "hostap_ap.h" 52 53 54/* #define final_version */ 55 56static int mtu = 1500; 57module_param(mtu, int, 0444); 58MODULE_PARM_DESC(mtu, "Maximum transfer unit"); 59 60static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; 61module_param_array(channel, int, NULL, 0444); 62MODULE_PARM_DESC(channel, "Initial channel"); 63 64static char essid[33] = "test"; 65module_param_string(essid, essid, sizeof(essid), 0444); 66MODULE_PARM_DESC(essid, "Host AP's ESSID"); 67 68static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; 69module_param_array(iw_mode, int, NULL, 0444); 70MODULE_PARM_DESC(iw_mode, "Initial operation mode"); 71 72static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; 73module_param_array(beacon_int, int, NULL, 0444); 74MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); 75 76static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; 77module_param_array(dtim_period, int, NULL, 0444); 78MODULE_PARM_DESC(dtim_period, "DTIM period"); 79 80static char dev_template[16] = "wlan%d"; 81module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); 82MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " 83 "wlan%d)"); 84 85#ifdef final_version 86#define EXTRA_EVENTS_WTERR 0 87#else 88/* check WTERR events (Wait Time-out) in development versions */ 89#define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR 90#endif 91 92/* Events that will be using BAP0 */ 93#define HFA384X_BAP0_EVENTS \ 94 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) 95 96/* event mask, i.e., events that will result in an interrupt */ 97#define HFA384X_EVENT_MASK \ 98 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ 99 HFA384X_EV_CMD | HFA384X_EV_TICK | \ 100 EXTRA_EVENTS_WTERR) 101 102/* Default TX control flags: use 802.11 headers and request interrupt for 103 * failed transmits. Frames that request ACK callback, will add 104 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. 105 */ 106#define HFA384X_TX_CTRL_FLAGS \ 107 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) 108 109 110/* ca. 1 usec */ 111#define HFA384X_CMD_BUSY_TIMEOUT 5000 112#define HFA384X_BAP_BUSY_TIMEOUT 50000 113 114/* ca. 10 usec */ 115#define HFA384X_CMD_COMPL_TIMEOUT 20000 116#define HFA384X_DL_COMPL_TIMEOUT 1000000 117 118/* Wait times for initialization; yield to other processes to avoid busy 119 * waiting for long time. */ 120#define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ 121#define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ 122 123 124static void prism2_hw_reset(struct net_device *dev); 125static void prism2_check_sta_fw_version(local_info_t *local); 126 127#ifdef PRISM2_DOWNLOAD_SUPPORT 128/* hostap_download.c */ 129static const struct proc_ops prism2_download_aux_dump_proc_ops; 130static u8 * prism2_read_pda(struct net_device *dev); 131static int prism2_download(local_info_t *local, 132 struct prism2_download_param *param); 133static void prism2_download_free_data(struct prism2_download_data *dl); 134static int prism2_download_volatile(local_info_t *local, 135 struct prism2_download_data *param); 136static int prism2_download_genesis(local_info_t *local, 137 struct prism2_download_data *param); 138static int prism2_get_ram_size(local_info_t *local); 139#endif /* PRISM2_DOWNLOAD_SUPPORT */ 140 141 142 143 144#ifndef final_version 145/* magic value written to SWSUPPORT0 reg. for detecting whether card is still 146 * present */ 147#define HFA384X_MAGIC 0x8A32 148#endif 149 150static void hfa384x_read_regs(struct net_device *dev, 151 struct hfa384x_regs *regs) 152{ 153 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); 154 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 155 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); 156 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); 157 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); 158} 159 160 161/** 162 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) 163 * @local: pointer to private Host AP driver data 164 * @entry: Prism2 command queue entry to be freed 165 * @del_req: request the entry to be removed 166 * 167 * Internal helper function for freeing Prism2 command queue entries. 168 * Caller must have acquired local->cmdlock before calling this function. 169 */ 170static inline void __hostap_cmd_queue_free(local_info_t *local, 171 struct hostap_cmd_queue *entry, 172 int del_req) 173{ 174 if (del_req) { 175 entry->del_req = 1; 176 if (!list_empty(&entry->list)) { 177 list_del_init(&entry->list); 178 local->cmd_queue_len--; 179 } 180 } 181 182 if (refcount_dec_and_test(&entry->usecnt) && entry->del_req) 183 kfree(entry); 184} 185 186 187/** 188 * hostap_cmd_queue_free - Free Prism2 command queue entry 189 * @local: pointer to private Host AP driver data 190 * @entry: Prism2 command queue entry to be freed 191 * @del_req: request the entry to be removed 192 * 193 * Free a Prism2 command queue entry. 194 */ 195static inline void hostap_cmd_queue_free(local_info_t *local, 196 struct hostap_cmd_queue *entry, 197 int del_req) 198{ 199 unsigned long flags; 200 201 spin_lock_irqsave(&local->cmdlock, flags); 202 __hostap_cmd_queue_free(local, entry, del_req); 203 spin_unlock_irqrestore(&local->cmdlock, flags); 204} 205 206 207/** 208 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries 209 * @local: pointer to private Host AP driver data 210 */ 211static void prism2_clear_cmd_queue(local_info_t *local) 212{ 213 struct list_head *ptr, *n; 214 unsigned long flags; 215 struct hostap_cmd_queue *entry; 216 217 spin_lock_irqsave(&local->cmdlock, flags); 218 list_for_each_safe(ptr, n, &local->cmd_queue) { 219 entry = list_entry(ptr, struct hostap_cmd_queue, list); 220 refcount_inc(&entry->usecnt); 221 printk(KERN_DEBUG "%s: removed pending cmd_queue entry " 222 "(type=%d, cmd=0x%04x, param0=0x%04x)\n", 223 local->dev->name, entry->type, entry->cmd, 224 entry->param0); 225 __hostap_cmd_queue_free(local, entry, 1); 226 } 227 if (local->cmd_queue_len) { 228 /* This should not happen; print debug message and clear 229 * queue length. */ 230 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " 231 "flush\n", local->dev->name, local->cmd_queue_len); 232 local->cmd_queue_len = 0; 233 } 234 spin_unlock_irqrestore(&local->cmdlock, flags); 235} 236 237 238/** 239 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware 240 * @dev: pointer to net_device 241 * @entry: Prism2 command queue entry to be issued 242 */ 243static int hfa384x_cmd_issue(struct net_device *dev, 244 struct hostap_cmd_queue *entry) 245{ 246 struct hostap_interface *iface; 247 local_info_t *local; 248 int tries; 249 u16 reg; 250 unsigned long flags; 251 252 iface = netdev_priv(dev); 253 local = iface->local; 254 255 if (local->func->card_present && !local->func->card_present(local)) 256 return -ENODEV; 257 258 if (entry->issued) { 259 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", 260 dev->name, entry); 261 } 262 263 /* wait until busy bit is clear; this should always be clear since the 264 * commands are serialized */ 265 tries = HFA384X_CMD_BUSY_TIMEOUT; 266 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 267 tries--; 268 udelay(1); 269 } 270#ifndef final_version 271 if (tries != HFA384X_CMD_BUSY_TIMEOUT) { 272 prism2_io_debug_error(dev, 1); 273 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " 274 "for %d usec\n", dev->name, 275 HFA384X_CMD_BUSY_TIMEOUT - tries); 276 } 277#endif 278 if (tries == 0) { 279 reg = HFA384X_INW(HFA384X_CMD_OFF); 280 prism2_io_debug_error(dev, 2); 281 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " 282 "reg=0x%04x\n", dev->name, reg); 283 return -ETIMEDOUT; 284 } 285 286 /* write command */ 287 spin_lock_irqsave(&local->cmdlock, flags); 288 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); 289 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); 290 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); 291 entry->issued = 1; 292 spin_unlock_irqrestore(&local->cmdlock, flags); 293 294 return 0; 295} 296 297 298/** 299 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion 300 * @dev: pointer to net_device 301 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 302 * @param0: value for Param0 register 303 * @param1: value for Param1 register (pointer; %NULL if not used) 304 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed 305 * 306 * Issue given command (possibly after waiting in command queue) and sleep 307 * until the command is completed (or timed out or interrupted). This can be 308 * called only from user process context. 309 */ 310static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, 311 u16 *param1, u16 *resp0) 312{ 313 struct hostap_interface *iface; 314 local_info_t *local; 315 int err, res, issue, issued = 0; 316 unsigned long flags; 317 struct hostap_cmd_queue *entry; 318 DECLARE_WAITQUEUE(wait, current); 319 320 iface = netdev_priv(dev); 321 local = iface->local; 322 323 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { 324 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 325 dev->name); 326 return -1; 327 } 328 329 if (signal_pending(current)) 330 return -EINTR; 331 332 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 333 if (entry == NULL) 334 return -ENOMEM; 335 336 refcount_set(&entry->usecnt, 1); 337 entry->type = CMD_SLEEP; 338 entry->cmd = cmd; 339 entry->param0 = param0; 340 if (param1) 341 entry->param1 = *param1; 342 init_waitqueue_head(&entry->compl); 343 344 /* prepare to wait for command completion event, but do not sleep yet 345 */ 346 add_wait_queue(&entry->compl, &wait); 347 set_current_state(TASK_INTERRUPTIBLE); 348 349 spin_lock_irqsave(&local->cmdlock, flags); 350 issue = list_empty(&local->cmd_queue); 351 if (issue) 352 entry->issuing = 1; 353 list_add_tail(&entry->list, &local->cmd_queue); 354 local->cmd_queue_len++; 355 spin_unlock_irqrestore(&local->cmdlock, flags); 356 357 err = 0; 358 if (!issue) 359 goto wait_completion; 360 361 if (signal_pending(current)) 362 err = -EINTR; 363 364 if (!err) { 365 if (hfa384x_cmd_issue(dev, entry)) 366 err = -ETIMEDOUT; 367 else 368 issued = 1; 369 } 370 371 wait_completion: 372 if (!err && entry->type != CMD_COMPLETED) { 373 /* sleep until command is completed or timed out */ 374 res = schedule_timeout(2 * HZ); 375 } else 376 res = -1; 377 378 if (!err && signal_pending(current)) 379 err = -EINTR; 380 381 if (err && issued) { 382 /* the command was issued, so a CmdCompl event should occur 383 * soon; however, there's a pending signal and 384 * schedule_timeout() would be interrupted; wait a short period 385 * of time to avoid removing entry from the list before 386 * CmdCompl event */ 387 udelay(300); 388 } 389 390 set_current_state(TASK_RUNNING); 391 remove_wait_queue(&entry->compl, &wait); 392 393 /* If entry->list is still in the list, it must be removed 394 * first and in this case prism2_cmd_ev() does not yet have 395 * local reference to it, and the data can be kfree()'d 396 * here. If the command completion event is still generated, 397 * it will be assigned to next (possibly) pending command, but 398 * the driver will reset the card anyway due to timeout 399 * 400 * If the entry is not in the list prism2_cmd_ev() has a local 401 * reference to it, but keeps cmdlock as long as the data is 402 * needed, so the data can be kfree()'d here. */ 403 404 /* FIX: if the entry->list is in the list, it has not been completed 405 * yet, so removing it here is somewhat wrong.. this could cause 406 * references to freed memory and next list_del() causing NULL pointer 407 * dereference.. it would probably be better to leave the entry in the 408 * list and the list should be emptied during hw reset */ 409 410 spin_lock_irqsave(&local->cmdlock, flags); 411 if (!list_empty(&entry->list)) { 412 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " 413 "(entry=%p, type=%d, res=%d)\n", dev->name, entry, 414 entry->type, res); 415 list_del_init(&entry->list); 416 local->cmd_queue_len--; 417 } 418 spin_unlock_irqrestore(&local->cmdlock, flags); 419 420 if (err) { 421 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", 422 dev->name, err); 423 res = err; 424 goto done; 425 } 426 427 if (entry->type != CMD_COMPLETED) { 428 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 429 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " 430 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " 431 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, 432 res, entry, entry->type, entry->cmd, entry->param0, reg, 433 HFA384X_INW(HFA384X_INTEN_OFF)); 434 if (reg & HFA384X_EV_CMD) { 435 /* Command completion event is pending, but the 436 * interrupt was not delivered - probably an issue 437 * with pcmcia-cs configuration. */ 438 printk(KERN_WARNING "%s: interrupt delivery does not " 439 "seem to work\n", dev->name); 440 } 441 prism2_io_debug_error(dev, 3); 442 res = -ETIMEDOUT; 443 goto done; 444 } 445 446 if (resp0 != NULL) 447 *resp0 = entry->resp0; 448#ifndef final_version 449 if (entry->res) { 450 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " 451 "resp0=0x%04x\n", 452 dev->name, cmd, entry->res, entry->resp0); 453 } 454#endif /* final_version */ 455 456 res = entry->res; 457 done: 458 hostap_cmd_queue_free(local, entry, 1); 459 return res; 460} 461 462 463/** 464 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed 465 * @dev: pointer to net_device 466 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 467 * @param0: value for Param0 register 468 * @callback: command completion callback function (%NULL = no callback) 469 * @context: context data to be given to the callback function 470 * 471 * Issue given command (possibly after waiting in command queue) and use 472 * callback function to indicate command completion. This can be called both 473 * from user and interrupt context. The callback function will be called in 474 * hardware IRQ context. It can be %NULL, when no function is called when 475 * command is completed. 476 */ 477static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, 478 void (*callback)(struct net_device *dev, 479 long context, u16 resp0, 480 u16 status), 481 long context) 482{ 483 struct hostap_interface *iface; 484 local_info_t *local; 485 int issue, ret; 486 unsigned long flags; 487 struct hostap_cmd_queue *entry; 488 489 iface = netdev_priv(dev); 490 local = iface->local; 491 492 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { 493 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", 494 dev->name); 495 return -1; 496 } 497 498 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 499 if (entry == NULL) 500 return -ENOMEM; 501 502 refcount_set(&entry->usecnt, 1); 503 entry->type = CMD_CALLBACK; 504 entry->cmd = cmd; 505 entry->param0 = param0; 506 entry->callback = callback; 507 entry->context = context; 508 509 spin_lock_irqsave(&local->cmdlock, flags); 510 issue = list_empty(&local->cmd_queue); 511 if (issue) 512 entry->issuing = 1; 513 list_add_tail(&entry->list, &local->cmd_queue); 514 local->cmd_queue_len++; 515 spin_unlock_irqrestore(&local->cmdlock, flags); 516 517 if (issue && hfa384x_cmd_issue(dev, entry)) 518 ret = -ETIMEDOUT; 519 else 520 ret = 0; 521 522 hostap_cmd_queue_free(local, entry, ret); 523 524 return ret; 525} 526 527 528/** 529 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) 530 * @dev: pointer to net_device 531 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 532 * @param0: value for Param0 register 533 * @io_debug_num: I/O debug error number 534 * 535 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). 536 */ 537static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, 538 int io_debug_num) 539{ 540 int tries; 541 u16 reg; 542 543 /* wait until busy bit is clear; this should always be clear since the 544 * commands are serialized */ 545 tries = HFA384X_CMD_BUSY_TIMEOUT; 546 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { 547 tries--; 548 udelay(1); 549 } 550 if (tries == 0) { 551 reg = HFA384X_INW(HFA384X_CMD_OFF); 552 prism2_io_debug_error(dev, io_debug_num); 553 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " 554 "reg=0x%04x\n", dev->name, io_debug_num, reg); 555 return -ETIMEDOUT; 556 } 557 558 /* write command */ 559 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); 560 HFA384X_OUTW(cmd, HFA384X_CMD_OFF); 561 562 return 0; 563} 564 565 566/** 567 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion 568 * @dev: pointer to net_device 569 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 570 * @param0: value for Param0 register 571 */ 572static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) 573{ 574 int res, tries; 575 u16 reg; 576 577 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); 578 if (res) 579 return res; 580 581 /* wait for command completion */ 582 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) 583 tries = HFA384X_DL_COMPL_TIMEOUT; 584 else 585 tries = HFA384X_CMD_COMPL_TIMEOUT; 586 587 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 588 tries > 0) { 589 tries--; 590 udelay(10); 591 } 592 if (tries == 0) { 593 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); 594 prism2_io_debug_error(dev, 5); 595 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " 596 "reg=0x%04x\n", dev->name, reg); 597 return -ETIMEDOUT; 598 } 599 600 res = (HFA384X_INW(HFA384X_STATUS_OFF) & 601 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | 602 BIT(8))) >> 8; 603#ifndef final_version 604 if (res) { 605 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", 606 dev->name, cmd, res); 607 } 608#endif 609 610 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 611 612 return res; 613} 614 615 616/** 617 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion 618 * @dev: pointer to net_device 619 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) 620 * @param0: value for Param0 register 621 */ 622static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, 623 u16 param0) 624{ 625 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); 626} 627 628 629/** 630 * prism2_cmd_ev - Prism2 command completion event handler 631 * @dev: pointer to net_device 632 * 633 * Interrupt handler for command completion events. Called by the main 634 * interrupt handler in hardware IRQ context. Read Resp0 and status registers 635 * from the hardware and ACK the event. Depending on the issued command type 636 * either wake up the sleeping process that is waiting for command completion 637 * or call the callback function. Issue the next command, if one is pending. 638 */ 639static void prism2_cmd_ev(struct net_device *dev) 640{ 641 struct hostap_interface *iface; 642 local_info_t *local; 643 struct hostap_cmd_queue *entry = NULL; 644 645 iface = netdev_priv(dev); 646 local = iface->local; 647 648 spin_lock(&local->cmdlock); 649 if (!list_empty(&local->cmd_queue)) { 650 entry = list_entry(local->cmd_queue.next, 651 struct hostap_cmd_queue, list); 652 refcount_inc(&entry->usecnt); 653 list_del_init(&entry->list); 654 local->cmd_queue_len--; 655 656 if (!entry->issued) { 657 printk(KERN_DEBUG "%s: Command completion event, but " 658 "cmd not issued\n", dev->name); 659 __hostap_cmd_queue_free(local, entry, 1); 660 entry = NULL; 661 } 662 } 663 spin_unlock(&local->cmdlock); 664 665 if (!entry) { 666 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 667 printk(KERN_DEBUG "%s: Command completion event, but no " 668 "pending commands\n", dev->name); 669 return; 670 } 671 672 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); 673 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & 674 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | 675 BIT(9) | BIT(8))) >> 8; 676 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 677 678 /* TODO: rest of the CmdEv handling could be moved to tasklet */ 679 if (entry->type == CMD_SLEEP) { 680 entry->type = CMD_COMPLETED; 681 wake_up_interruptible(&entry->compl); 682 } else if (entry->type == CMD_CALLBACK) { 683 if (entry->callback) 684 entry->callback(dev, entry->context, entry->resp0, 685 entry->res); 686 } else { 687 printk(KERN_DEBUG "%s: Invalid command completion type %d\n", 688 dev->name, entry->type); 689 } 690 hostap_cmd_queue_free(local, entry, 1); 691 692 /* issue next command, if pending */ 693 entry = NULL; 694 spin_lock(&local->cmdlock); 695 if (!list_empty(&local->cmd_queue)) { 696 entry = list_entry(local->cmd_queue.next, 697 struct hostap_cmd_queue, list); 698 if (entry->issuing) { 699 /* hfa384x_cmd() has already started issuing this 700 * command, so do not start here */ 701 entry = NULL; 702 } 703 if (entry) 704 refcount_inc(&entry->usecnt); 705 } 706 spin_unlock(&local->cmdlock); 707 708 if (entry) { 709 /* issue next command; if command issuing fails, remove the 710 * entry from cmd_queue */ 711 int res = hfa384x_cmd_issue(dev, entry); 712 spin_lock(&local->cmdlock); 713 __hostap_cmd_queue_free(local, entry, res); 714 spin_unlock(&local->cmdlock); 715 } 716} 717 718 719static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) 720{ 721 int tries = HFA384X_BAP_BUSY_TIMEOUT; 722 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 723 724 while (res && tries > 0) { 725 tries--; 726 udelay(1); 727 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; 728 } 729 return res; 730} 731 732 733/* Offset must be even */ 734static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, 735 int offset) 736{ 737 u16 o_off, s_off; 738 int ret = 0; 739 740 if (offset % 2 || bap > 1) 741 return -EINVAL; 742 743 if (bap == BAP1) { 744 o_off = HFA384X_OFFSET1_OFF; 745 s_off = HFA384X_SELECT1_OFF; 746 } else { 747 o_off = HFA384X_OFFSET0_OFF; 748 s_off = HFA384X_SELECT0_OFF; 749 } 750 751 if (hfa384x_wait_offset(dev, o_off)) { 752 prism2_io_debug_error(dev, 7); 753 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", 754 dev->name); 755 ret = -ETIMEDOUT; 756 goto out; 757 } 758 759 HFA384X_OUTW(id, s_off); 760 HFA384X_OUTW(offset, o_off); 761 762 if (hfa384x_wait_offset(dev, o_off)) { 763 prism2_io_debug_error(dev, 8); 764 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", 765 dev->name); 766 ret = -ETIMEDOUT; 767 goto out; 768 } 769#ifndef final_version 770 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { 771 prism2_io_debug_error(dev, 9); 772 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " 773 "(%d,0x04%x,%d); reg=0x%04x\n", 774 dev->name, bap, id, offset, HFA384X_INW(o_off)); 775 ret = -EINVAL; 776 } 777#endif 778 779 out: 780 return ret; 781} 782 783 784static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, 785 int exact_len) 786{ 787 struct hostap_interface *iface; 788 local_info_t *local; 789 int res, rlen = 0; 790 struct hfa384x_rid_hdr rec; 791 792 iface = netdev_priv(dev); 793 local = iface->local; 794 795 if (local->no_pri) { 796 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " 797 "f/w\n", dev->name, rid, len); 798 return -ENOTTY; /* Well.. not really correct, but return 799 * something unique enough.. */ 800 } 801 802 if ((local->func->card_present && !local->func->card_present(local)) || 803 local->hw_downloading) 804 return -ENODEV; 805 806 res = mutex_lock_interruptible(&local->rid_bap_mtx); 807 if (res) 808 return res; 809 810 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); 811 if (res) { 812 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " 813 "(res=%d, rid=%04x, len=%d)\n", 814 dev->name, res, rid, len); 815 mutex_unlock(&local->rid_bap_mtx); 816 return res; 817 } 818 819 spin_lock_bh(&local->baplock); 820 821 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 822 if (res) 823 goto unlock; 824 825 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); 826 if (res) 827 goto unlock; 828 829 if (le16_to_cpu(rec.len) == 0) { 830 /* RID not available */ 831 res = -ENODATA; 832 goto unlock; 833 } 834 835 rlen = (le16_to_cpu(rec.len) - 1) * 2; 836 if (exact_len && rlen != len) { 837 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " 838 "rid=0x%04x, len=%d (expected %d)\n", 839 dev->name, rid, rlen, len); 840 res = -ENODATA; 841 } 842 843 res = hfa384x_from_bap(dev, BAP0, buf, len); 844 845unlock: 846 spin_unlock_bh(&local->baplock); 847 mutex_unlock(&local->rid_bap_mtx); 848 849 if (res) { 850 if (res != -ENODATA) 851 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " 852 "len=%d) - failed - res=%d\n", dev->name, rid, 853 len, res); 854 if (res == -ETIMEDOUT) 855 prism2_hw_reset(dev); 856 return res; 857 } 858 859 return rlen; 860} 861 862 863static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) 864{ 865 struct hostap_interface *iface; 866 local_info_t *local; 867 struct hfa384x_rid_hdr rec; 868 int res; 869 870 iface = netdev_priv(dev); 871 local = iface->local; 872 873 if (local->no_pri) { 874 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " 875 "f/w\n", dev->name, rid, len); 876 return -ENOTTY; /* Well.. not really correct, but return 877 * something unique enough.. */ 878 } 879 880 if ((local->func->card_present && !local->func->card_present(local)) || 881 local->hw_downloading) 882 return -ENODEV; 883 884 rec.rid = cpu_to_le16(rid); 885 /* RID len in words and +1 for rec.rid */ 886 rec.len = cpu_to_le16(len / 2 + len % 2 + 1); 887 888 res = mutex_lock_interruptible(&local->rid_bap_mtx); 889 if (res) 890 return res; 891 892 spin_lock_bh(&local->baplock); 893 res = hfa384x_setup_bap(dev, BAP0, rid, 0); 894 if (!res) 895 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); 896 if (!res) 897 res = hfa384x_to_bap(dev, BAP0, buf, len); 898 spin_unlock_bh(&local->baplock); 899 900 if (res) { 901 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " 902 "failed - res=%d\n", dev->name, rid, len, res); 903 mutex_unlock(&local->rid_bap_mtx); 904 return res; 905 } 906 907 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); 908 mutex_unlock(&local->rid_bap_mtx); 909 910 if (res) { 911 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " 912 "failed (res=%d, rid=%04x, len=%d)\n", 913 dev->name, res, rid, len); 914 915 if (res == -ETIMEDOUT) 916 prism2_hw_reset(dev); 917 } 918 919 return res; 920} 921 922 923static void hfa384x_disable_interrupts(struct net_device *dev) 924{ 925 /* disable interrupts and clear event status */ 926 HFA384X_OUTW(0, HFA384X_INTEN_OFF); 927 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 928} 929 930 931static void hfa384x_enable_interrupts(struct net_device *dev) 932{ 933 /* ack pending events and enable interrupts from selected events */ 934 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 935 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 936} 937 938 939static void hfa384x_events_no_bap0(struct net_device *dev) 940{ 941 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, 942 HFA384X_INTEN_OFF); 943} 944 945 946static void hfa384x_events_all(struct net_device *dev) 947{ 948 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); 949} 950 951 952static void hfa384x_events_only_cmd(struct net_device *dev) 953{ 954 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); 955} 956 957 958static u16 hfa384x_allocate_fid(struct net_device *dev, int len) 959{ 960 u16 fid; 961 unsigned long delay; 962 963 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event 964 * below would be handled like CmdCompl event (sleep here, wake up from 965 * interrupt handler */ 966 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { 967 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", 968 dev->name, len); 969 return 0xffff; 970 } 971 972 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; 973 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && 974 time_before(jiffies, delay)) 975 yield(); 976 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { 977 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); 978 return 0xffff; 979 } 980 981 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); 982 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 983 984 return fid; 985} 986 987 988static int prism2_reset_port(struct net_device *dev) 989{ 990 struct hostap_interface *iface; 991 local_info_t *local; 992 int res; 993 994 iface = netdev_priv(dev); 995 local = iface->local; 996 997 if (!local->dev_enabled) 998 return 0; 999 1000 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, 1001 NULL, NULL); 1002 if (res) 1003 printk(KERN_DEBUG "%s: reset port failed to disable port\n", 1004 dev->name); 1005 else { 1006 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, 1007 NULL, NULL); 1008 if (res) 1009 printk(KERN_DEBUG "%s: reset port failed to enable " 1010 "port\n", dev->name); 1011 } 1012 1013 /* It looks like at least some STA firmware versions reset 1014 * fragmentation threshold back to 2346 after enable command. Restore 1015 * the configured value, if it differs from this default. */ 1016 if (local->fragm_threshold != 2346 && 1017 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1018 local->fragm_threshold)) { 1019 printk(KERN_DEBUG "%s: failed to restore fragmentation " 1020 "threshold (%d) after Port0 enable\n", 1021 dev->name, local->fragm_threshold); 1022 } 1023 1024 /* Some firmwares lose antenna selection settings on reset */ 1025 (void) hostap_set_antsel(local); 1026 1027 return res; 1028} 1029 1030 1031static int prism2_get_version_info(struct net_device *dev, u16 rid, 1032 const char *txt) 1033{ 1034 struct hfa384x_comp_ident comp; 1035 struct hostap_interface *iface; 1036 local_info_t *local; 1037 1038 iface = netdev_priv(dev); 1039 local = iface->local; 1040 1041 if (local->no_pri) { 1042 /* PRI f/w not yet available - cannot read RIDs */ 1043 return -1; 1044 } 1045 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { 1046 printk(KERN_DEBUG "Could not get RID for component %s\n", txt); 1047 return -1; 1048 } 1049 1050 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, 1051 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), 1052 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); 1053 return 0; 1054} 1055 1056 1057static int prism2_setup_rids(struct net_device *dev) 1058{ 1059 struct hostap_interface *iface; 1060 local_info_t *local; 1061 __le16 tmp; 1062 int ret = 0; 1063 1064 iface = netdev_priv(dev); 1065 local = iface->local; 1066 1067 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); 1068 1069 if (!local->fw_ap) { 1070 u16 tmp1 = hostap_get_porttype(local); 1071 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); 1072 if (ret) { 1073 printk("%s: Port type setting to %d failed\n", 1074 dev->name, tmp1); 1075 goto fail; 1076 } 1077 } 1078 1079 /* Setting SSID to empty string seems to kill the card in Host AP mode 1080 */ 1081 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { 1082 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, 1083 local->essid); 1084 if (ret) { 1085 printk("%s: AP own SSID setting failed\n", dev->name); 1086 goto fail; 1087 } 1088 } 1089 1090 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, 1091 PRISM2_DATA_MAXLEN); 1092 if (ret) { 1093 printk("%s: MAC data length setting to %d failed\n", 1094 dev->name, PRISM2_DATA_MAXLEN); 1095 goto fail; 1096 } 1097 1098 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { 1099 printk("%s: Channel list read failed\n", dev->name); 1100 ret = -EINVAL; 1101 goto fail; 1102 } 1103 local->channel_mask = le16_to_cpu(tmp); 1104 1105 if (local->channel < 1 || local->channel > 14 || 1106 !(local->channel_mask & (1 << (local->channel - 1)))) { 1107 printk(KERN_WARNING "%s: Channel setting out of range " 1108 "(%d)!\n", dev->name, local->channel); 1109 ret = -EBUSY; 1110 goto fail; 1111 } 1112 1113 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); 1114 if (ret) { 1115 printk("%s: Channel setting to %d failed\n", 1116 dev->name, local->channel); 1117 goto fail; 1118 } 1119 1120 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, 1121 local->beacon_int); 1122 if (ret) { 1123 printk("%s: Beacon interval setting to %d failed\n", 1124 dev->name, local->beacon_int); 1125 /* this may fail with Symbol/Lucent firmware */ 1126 if (ret == -ETIMEDOUT) 1127 goto fail; 1128 } 1129 1130 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, 1131 local->dtim_period); 1132 if (ret) { 1133 printk("%s: DTIM period setting to %d failed\n", 1134 dev->name, local->dtim_period); 1135 /* this may fail with Symbol/Lucent firmware */ 1136 if (ret == -ETIMEDOUT) 1137 goto fail; 1138 } 1139 1140 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, 1141 local->is_promisc); 1142 if (ret) 1143 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", 1144 dev->name, local->is_promisc); 1145 1146 if (!local->fw_ap) { 1147 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, 1148 local->essid); 1149 if (ret) { 1150 printk("%s: Desired SSID setting failed\n", dev->name); 1151 goto fail; 1152 } 1153 } 1154 1155 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and 1156 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic 1157 * rates */ 1158 if (local->tx_rate_control == 0) { 1159 local->tx_rate_control = 1160 HFA384X_RATES_1MBPS | 1161 HFA384X_RATES_2MBPS | 1162 HFA384X_RATES_5MBPS | 1163 HFA384X_RATES_11MBPS; 1164 } 1165 if (local->basic_rates == 0) 1166 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; 1167 1168 if (!local->fw_ap) { 1169 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, 1170 local->tx_rate_control); 1171 if (ret) { 1172 printk("%s: TXRateControl setting to %d failed\n", 1173 dev->name, local->tx_rate_control); 1174 goto fail; 1175 } 1176 1177 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, 1178 local->tx_rate_control); 1179 if (ret) { 1180 printk("%s: cnfSupportedRates setting to %d failed\n", 1181 dev->name, local->tx_rate_control); 1182 } 1183 1184 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, 1185 local->basic_rates); 1186 if (ret) { 1187 printk("%s: cnfBasicRates setting to %d failed\n", 1188 dev->name, local->basic_rates); 1189 } 1190 1191 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); 1192 if (ret) { 1193 printk("%s: Create IBSS setting to 1 failed\n", 1194 dev->name); 1195 } 1196 } 1197 1198 if (local->name_set) 1199 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, 1200 local->name); 1201 1202 if (hostap_set_encryption(local)) { 1203 printk(KERN_INFO "%s: could not configure encryption\n", 1204 dev->name); 1205 } 1206 1207 (void) hostap_set_antsel(local); 1208 1209 if (hostap_set_roaming(local)) { 1210 printk(KERN_INFO "%s: could not set host roaming\n", 1211 dev->name); 1212 } 1213 1214 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && 1215 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) 1216 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", 1217 dev->name, local->enh_sec); 1218 1219 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently 1220 * not working correctly (last seven counters report bogus values). 1221 * This has been fixed in 0.8.2, so enable 32-bit tallies only 1222 * beginning with that firmware version. Another bug fix for 32-bit 1223 * tallies in 1.4.0; should 16-bit tallies be used for some other 1224 * versions, too? */ 1225 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { 1226 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { 1227 printk(KERN_INFO "%s: cnfThirty2Tally setting " 1228 "failed\n", dev->name); 1229 local->tallies32 = 0; 1230 } else 1231 local->tallies32 = 1; 1232 } else 1233 local->tallies32 = 0; 1234 1235 hostap_set_auth_algs(local); 1236 1237 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, 1238 local->fragm_threshold)) { 1239 printk(KERN_INFO "%s: setting FragmentationThreshold to %d " 1240 "failed\n", dev->name, local->fragm_threshold); 1241 } 1242 1243 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, 1244 local->rts_threshold)) { 1245 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", 1246 dev->name, local->rts_threshold); 1247 } 1248 1249 if (local->manual_retry_count >= 0 && 1250 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, 1251 local->manual_retry_count)) { 1252 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", 1253 dev->name, local->manual_retry_count); 1254 } 1255 1256 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && 1257 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { 1258 local->rssi_to_dBm = le16_to_cpu(tmp); 1259 } 1260 1261 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && 1262 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { 1263 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", 1264 dev->name); 1265 } 1266 1267 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && 1268 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, 1269 local->generic_elem, local->generic_elem_len)) { 1270 printk(KERN_INFO "%s: setting genericElement failed\n", 1271 dev->name); 1272 } 1273 1274 fail: 1275 return ret; 1276} 1277 1278 1279static int prism2_hw_init(struct net_device *dev, int initial) 1280{ 1281 struct hostap_interface *iface; 1282 local_info_t *local; 1283 int ret, first = 1; 1284 unsigned long start, delay; 1285 1286 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); 1287 1288 iface = netdev_priv(dev); 1289 local = iface->local; 1290 1291 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); 1292 1293 init: 1294 /* initialize HFA 384x */ 1295 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); 1296 if (ret) { 1297 printk(KERN_INFO "%s: first command failed - assuming card " 1298 "does not have primary firmware\n", dev_info); 1299 } 1300 1301 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1302 /* EvStat has Cmd bit set in some cases, so retry once if no 1303 * wait was needed */ 1304 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1305 printk(KERN_DEBUG "%s: init command completed too quickly - " 1306 "retrying\n", dev->name); 1307 first = 0; 1308 goto init; 1309 } 1310 1311 start = jiffies; 1312 delay = jiffies + HFA384X_INIT_TIMEOUT; 1313 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && 1314 time_before(jiffies, delay)) 1315 yield(); 1316 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { 1317 printk(KERN_DEBUG "%s: assuming no Primary image in " 1318 "flash - card initialization not completed\n", 1319 dev_info); 1320 local->no_pri = 1; 1321#ifdef PRISM2_DOWNLOAD_SUPPORT 1322 if (local->sram_type == -1) 1323 local->sram_type = prism2_get_ram_size(local); 1324#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1325 return 1; 1326 } 1327 local->no_pri = 0; 1328 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", 1329 (jiffies - start) * 1000 / HZ); 1330 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); 1331 return 0; 1332} 1333 1334 1335static int prism2_hw_init2(struct net_device *dev, int initial) 1336{ 1337 struct hostap_interface *iface; 1338 local_info_t *local; 1339 int i; 1340 1341 iface = netdev_priv(dev); 1342 local = iface->local; 1343 1344#ifdef PRISM2_DOWNLOAD_SUPPORT 1345 kfree(local->pda); 1346 if (local->no_pri) 1347 local->pda = NULL; 1348 else 1349 local->pda = prism2_read_pda(dev); 1350#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1351 1352 hfa384x_disable_interrupts(dev); 1353 1354#ifndef final_version 1355 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); 1356 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 1357 printk("SWSUPPORT0 write/read failed: %04X != %04X\n", 1358 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); 1359 goto failed; 1360 } 1361#endif 1362 1363 if (initial || local->pri_only) { 1364 hfa384x_events_only_cmd(dev); 1365 /* get card version information */ 1366 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || 1367 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { 1368 hfa384x_disable_interrupts(dev); 1369 goto failed; 1370 } 1371 1372 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { 1373 printk(KERN_DEBUG "%s: Failed to read STA f/w version " 1374 "- only Primary f/w present\n", dev->name); 1375 local->pri_only = 1; 1376 return 0; 1377 } 1378 local->pri_only = 0; 1379 hfa384x_disable_interrupts(dev); 1380 } 1381 1382 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and 1383 * enable interrupts before this. This would also require some sort of 1384 * sleeping AllocEv waiting */ 1385 1386 /* allocate TX FIDs */ 1387 local->txfid_len = PRISM2_TXFID_LEN; 1388 for (i = 0; i < PRISM2_TXFID_COUNT; i++) { 1389 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); 1390 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { 1391 local->txfid[i] = hfa384x_allocate_fid(dev, 1600); 1392 if (local->txfid[i] != 0xffff) { 1393 printk(KERN_DEBUG "%s: Using shorter TX FID " 1394 "(1600 bytes)\n", dev->name); 1395 local->txfid_len = 1600; 1396 } 1397 } 1398 if (local->txfid[i] == 0xffff) 1399 goto failed; 1400 local->intransmitfid[i] = PRISM2_TXFID_EMPTY; 1401 } 1402 1403 hfa384x_events_only_cmd(dev); 1404 1405 if (initial) { 1406 u8 addr[ETH_ALEN] = {}; 1407 struct list_head *ptr; 1408 1409 prism2_check_sta_fw_version(local); 1410 1411 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, 1412 addr, ETH_ALEN, 1) < 0) { 1413 printk("%s: could not get own MAC address\n", 1414 dev->name); 1415 } 1416 eth_hw_addr_set(dev, addr); 1417 list_for_each(ptr, &local->hostap_interfaces) { 1418 iface = list_entry(ptr, struct hostap_interface, list); 1419 eth_hw_addr_inherit(iface->dev, dev); 1420 } 1421 } else if (local->fw_ap) 1422 prism2_check_sta_fw_version(local); 1423 1424 prism2_setup_rids(dev); 1425 1426 /* MAC is now configured, but port 0 is not yet enabled */ 1427 return 0; 1428 1429 failed: 1430 if (!local->no_pri) 1431 printk(KERN_WARNING "%s: Initialization failed\n", dev_info); 1432 return 1; 1433} 1434 1435 1436static int prism2_hw_enable(struct net_device *dev, int initial) 1437{ 1438 struct hostap_interface *iface; 1439 local_info_t *local; 1440 int was_resetting; 1441 1442 iface = netdev_priv(dev); 1443 local = iface->local; 1444 was_resetting = local->hw_resetting; 1445 1446 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { 1447 printk("%s: MAC port 0 enabling failed\n", dev->name); 1448 return 1; 1449 } 1450 1451 local->hw_ready = 1; 1452 local->hw_reset_tries = 0; 1453 local->hw_resetting = 0; 1454 hfa384x_enable_interrupts(dev); 1455 1456 /* at least D-Link DWL-650 seems to require additional port reset 1457 * before it starts acting as an AP, so reset port automatically 1458 * here just in case */ 1459 if (initial && prism2_reset_port(dev)) { 1460 printk("%s: MAC port 0 resetting failed\n", dev->name); 1461 return 1; 1462 } 1463 1464 if (was_resetting && netif_queue_stopped(dev)) { 1465 /* If hw_reset() was called during pending transmit, netif 1466 * queue was stopped. Wake it up now since the wlan card has 1467 * been resetted. */ 1468 netif_wake_queue(dev); 1469 } 1470 1471 return 0; 1472} 1473 1474 1475static int prism2_hw_config(struct net_device *dev, int initial) 1476{ 1477 struct hostap_interface *iface; 1478 local_info_t *local; 1479 1480 iface = netdev_priv(dev); 1481 local = iface->local; 1482 1483 if (local->hw_downloading) 1484 return 1; 1485 1486 if (prism2_hw_init(dev, initial)) { 1487 return local->no_pri ? 0 : 1; 1488 } 1489 1490 if (prism2_hw_init2(dev, initial)) 1491 return 1; 1492 1493 /* Enable firmware if secondary image is loaded and at least one of the 1494 * netdevices is up. */ 1495 if (!local->pri_only && 1496 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { 1497 if (!local->dev_enabled) 1498 prism2_callback(local, PRISM2_CALLBACK_ENABLE); 1499 local->dev_enabled = 1; 1500 return prism2_hw_enable(dev, initial); 1501 } 1502 1503 return 0; 1504} 1505 1506 1507static void prism2_hw_shutdown(struct net_device *dev, int no_disable) 1508{ 1509 struct hostap_interface *iface; 1510 local_info_t *local; 1511 1512 iface = netdev_priv(dev); 1513 local = iface->local; 1514 1515 /* Allow only command completion events during disable */ 1516 hfa384x_events_only_cmd(dev); 1517 1518 local->hw_ready = 0; 1519 if (local->dev_enabled) 1520 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 1521 local->dev_enabled = 0; 1522 1523 if (local->func->card_present && !local->func->card_present(local)) { 1524 printk(KERN_DEBUG "%s: card already removed or not configured " 1525 "during shutdown\n", dev->name); 1526 return; 1527 } 1528 1529 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && 1530 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) 1531 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); 1532 1533 hfa384x_disable_interrupts(dev); 1534 1535 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) 1536 hfa384x_events_only_cmd(dev); 1537 else 1538 prism2_clear_cmd_queue(local); 1539} 1540 1541 1542static void prism2_hw_reset(struct net_device *dev) 1543{ 1544 struct hostap_interface *iface; 1545 local_info_t *local; 1546 1547#if 0 1548 static long last_reset = 0; 1549 1550 /* do not reset card more than once per second to avoid ending up in a 1551 * busy loop resetting the card */ 1552 if (time_before_eq(jiffies, last_reset + HZ)) 1553 return; 1554 last_reset = jiffies; 1555#endif 1556 1557 iface = netdev_priv(dev); 1558 local = iface->local; 1559 1560 if (local->hw_downloading) 1561 return; 1562 1563 if (local->hw_resetting) { 1564 printk(KERN_WARNING "%s: %s: already resetting card - " 1565 "ignoring reset request\n", dev_info, dev->name); 1566 return; 1567 } 1568 1569 local->hw_reset_tries++; 1570 if (local->hw_reset_tries > 10) { 1571 printk(KERN_WARNING "%s: too many reset tries, skipping\n", 1572 dev->name); 1573 return; 1574 } 1575 1576 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); 1577 hfa384x_disable_interrupts(dev); 1578 local->hw_resetting = 1; 1579 if (local->func->cor_sreset) { 1580 /* Host system seems to hang in some cases with high traffic 1581 * load or shared interrupts during COR sreset. Disable shared 1582 * interrupts during reset to avoid these crashes. COS sreset 1583 * takes quite a long time, so it is unfortunate that this 1584 * seems to be needed. Anyway, I do not know of any better way 1585 * of avoiding the crash. */ 1586 disable_irq(dev->irq); 1587 local->func->cor_sreset(local); 1588 enable_irq(dev->irq); 1589 } 1590 prism2_hw_shutdown(dev, 1); 1591 prism2_hw_config(dev, 0); 1592 local->hw_resetting = 0; 1593 1594#ifdef PRISM2_DOWNLOAD_SUPPORT 1595 if (local->dl_pri) { 1596 printk(KERN_DEBUG "%s: persistent download of primary " 1597 "firmware\n", dev->name); 1598 if (prism2_download_genesis(local, local->dl_pri) < 0) 1599 printk(KERN_WARNING "%s: download (PRI) failed\n", 1600 dev->name); 1601 } 1602 1603 if (local->dl_sec) { 1604 printk(KERN_DEBUG "%s: persistent download of secondary " 1605 "firmware\n", dev->name); 1606 if (prism2_download_volatile(local, local->dl_sec) < 0) 1607 printk(KERN_WARNING "%s: download (SEC) failed\n", 1608 dev->name); 1609 } 1610#endif /* PRISM2_DOWNLOAD_SUPPORT */ 1611 1612 /* TODO: restore beacon TIM bits for STAs that have buffered frames */ 1613} 1614 1615 1616static void prism2_schedule_reset(local_info_t *local) 1617{ 1618 schedule_work(&local->reset_queue); 1619} 1620 1621 1622/* Called only as scheduled task after noticing card timeout in interrupt 1623 * context */ 1624static void handle_reset_queue(struct work_struct *work) 1625{ 1626 local_info_t *local = container_of(work, local_info_t, reset_queue); 1627 1628 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); 1629 prism2_hw_reset(local->dev); 1630 1631 if (netif_queue_stopped(local->dev)) { 1632 int i; 1633 1634 for (i = 0; i < PRISM2_TXFID_COUNT; i++) 1635 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { 1636 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " 1637 "wake up queue\n"); 1638 netif_wake_queue(local->dev); 1639 break; 1640 } 1641 } 1642} 1643 1644 1645static int prism2_get_txfid_idx(local_info_t *local) 1646{ 1647 int idx, end; 1648 unsigned long flags; 1649 1650 spin_lock_irqsave(&local->txfidlock, flags); 1651 end = idx = local->next_txfid; 1652 do { 1653 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1654 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; 1655 spin_unlock_irqrestore(&local->txfidlock, flags); 1656 return idx; 1657 } 1658 idx++; 1659 if (idx >= PRISM2_TXFID_COUNT) 1660 idx = 0; 1661 } while (idx != end); 1662 spin_unlock_irqrestore(&local->txfidlock, flags); 1663 1664 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " 1665 "packet dropped\n"); 1666 local->dev->stats.tx_dropped++; 1667 1668 return -1; 1669} 1670 1671 1672/* Called only from hardware IRQ */ 1673static void prism2_transmit_cb(struct net_device *dev, long context, 1674 u16 resp0, u16 res) 1675{ 1676 struct hostap_interface *iface; 1677 local_info_t *local; 1678 int idx = (int) context; 1679 1680 iface = netdev_priv(dev); 1681 local = iface->local; 1682 1683 if (res) { 1684 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", 1685 dev->name, res); 1686 return; 1687 } 1688 1689 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { 1690 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " 1691 "idx=%d\n", dev->name, idx); 1692 return; 1693 } 1694 1695 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1696 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " 1697 "with no pending transmit\n", dev->name); 1698 } 1699 1700 if (netif_queue_stopped(dev)) { 1701 /* ready for next TX, so wake up queue that was stopped in 1702 * prism2_transmit() */ 1703 netif_wake_queue(dev); 1704 } 1705 1706 spin_lock(&local->txfidlock); 1707 1708 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid 1709 * will be automatically allocated for the next TX frame */ 1710 local->intransmitfid[idx] = resp0; 1711 1712 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " 1713 "resp0=0x%04x, transmit_txfid=0x%04x\n", 1714 dev->name, idx, local->txfid[idx], 1715 resp0, local->intransmitfid[local->next_txfid]); 1716 1717 idx++; 1718 if (idx >= PRISM2_TXFID_COUNT) 1719 idx = 0; 1720 local->next_txfid = idx; 1721 1722 /* check if all TX buffers are occupied */ 1723 do { 1724 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { 1725 spin_unlock(&local->txfidlock); 1726 return; 1727 } 1728 idx++; 1729 if (idx >= PRISM2_TXFID_COUNT) 1730 idx = 0; 1731 } while (idx != local->next_txfid); 1732 spin_unlock(&local->txfidlock); 1733 1734 /* no empty TX buffers, stop queue */ 1735 netif_stop_queue(dev); 1736} 1737 1738 1739/* Called only from software IRQ if PCI bus master is not used (with bus master 1740 * this can be called both from software and hardware IRQ) */ 1741static int prism2_transmit(struct net_device *dev, int idx) 1742{ 1743 struct hostap_interface *iface; 1744 local_info_t *local; 1745 int res; 1746 1747 iface = netdev_priv(dev); 1748 local = iface->local; 1749 1750 /* The driver tries to stop netif queue so that there would not be 1751 * more than one attempt to transmit frames going on; check that this 1752 * is really the case */ 1753 1754 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 1755 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " 1756 "when previous TX was pending\n", dev->name); 1757 return -1; 1758 } 1759 1760 /* stop the queue for the time that transmit is pending */ 1761 netif_stop_queue(dev); 1762 1763 /* transmit packet */ 1764 res = hfa384x_cmd_callback( 1765 dev, 1766 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, 1767 local->txfid[idx], 1768 prism2_transmit_cb, (long) idx); 1769 1770 if (res) { 1771 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " 1772 "failed (res=%d)\n", dev->name, res); 1773 dev->stats.tx_dropped++; 1774 netif_wake_queue(dev); 1775 return -1; 1776 } 1777 netif_trans_update(dev); 1778 1779 /* Since we did not wait for command completion, the card continues 1780 * to process on the background and we will finish handling when 1781 * command completion event is handled (prism2_cmd_ev() function) */ 1782 1783 return 0; 1784} 1785 1786 1787/* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and 1788 * send the payload with this descriptor) */ 1789/* Called only from software IRQ */ 1790static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) 1791{ 1792 struct hostap_interface *iface; 1793 local_info_t *local; 1794 struct hfa384x_tx_frame txdesc; 1795 struct hostap_skb_tx_data *meta; 1796 int hdr_len, data_len, idx, res, ret = -1; 1797 u16 tx_control; 1798 1799 iface = netdev_priv(dev); 1800 local = iface->local; 1801 1802 meta = (struct hostap_skb_tx_data *) skb->cb; 1803 1804 prism2_callback(local, PRISM2_CALLBACK_TX_START); 1805 1806 if ((local->func->card_present && !local->func->card_present(local)) || 1807 !local->hw_ready || local->hw_downloading || local->pri_only) { 1808 if (net_ratelimit()) { 1809 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" 1810 " skipping\n", dev->name); 1811 } 1812 goto fail; 1813 } 1814 1815 memset(&txdesc, 0, sizeof(txdesc)); 1816 1817 /* skb->data starts with txdesc->frame_control */ 1818 hdr_len = sizeof(txdesc.header); 1819 BUILD_BUG_ON(hdr_len != 24); 1820 skb_copy_from_linear_data(skb, &txdesc.header, hdr_len); 1821 if (ieee80211_is_data(txdesc.frame_control) && 1822 ieee80211_has_a4(txdesc.frame_control) && 1823 skb->len >= 30) { 1824 /* Addr4 */ 1825 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, 1826 ETH_ALEN); 1827 hdr_len += ETH_ALEN; 1828 } 1829 1830 tx_control = local->tx_control; 1831 if (meta->tx_cb_idx) { 1832 tx_control |= HFA384X_TX_CTRL_TX_OK; 1833 txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); 1834 } 1835 txdesc.tx_control = cpu_to_le16(tx_control); 1836 txdesc.tx_rate = meta->rate; 1837 1838 data_len = skb->len - hdr_len; 1839 txdesc.data_len = cpu_to_le16(data_len); 1840 txdesc.len = cpu_to_be16(data_len); 1841 1842 idx = prism2_get_txfid_idx(local); 1843 if (idx < 0) 1844 goto fail; 1845 1846 if (local->frame_dump & PRISM2_DUMP_TX_HDR) 1847 hostap_dump_tx_header(dev->name, &txdesc); 1848 1849 spin_lock(&local->baplock); 1850 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); 1851 1852 if (!res) 1853 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); 1854 if (!res) 1855 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, 1856 skb->len - hdr_len); 1857 spin_unlock(&local->baplock); 1858 1859 if (!res) 1860 res = prism2_transmit(dev, idx); 1861 if (res) { 1862 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", 1863 dev->name); 1864 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 1865 schedule_work(&local->reset_queue); 1866 goto fail; 1867 } 1868 1869 ret = 0; 1870 1871fail: 1872 prism2_callback(local, PRISM2_CALLBACK_TX_END); 1873 return ret; 1874} 1875 1876 1877/* Some SMP systems have reported number of odd errors with hostap_pci. fid 1878 * register has changed values between consecutive reads for an unknown reason. 1879 * This should really not happen, so more debugging is needed. This test 1880 * version is a bit slower, but it will detect most of such register changes 1881 * and will try to get the correct fid eventually. */ 1882#define EXTRA_FID_READ_TESTS 1883 1884static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) 1885{ 1886#ifdef EXTRA_FID_READ_TESTS 1887 u16 val, val2, val3; 1888 int i; 1889 1890 for (i = 0; i < 10; i++) { 1891 val = HFA384X_INW(reg); 1892 val2 = HFA384X_INW(reg); 1893 val3 = HFA384X_INW(reg); 1894 1895 if (val == val2 && val == val3) 1896 return val; 1897 1898 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" 1899 " %04x %04x %04x\n", 1900 dev->name, i, reg, val, val2, val3); 1901 if ((val == val2 || val == val3) && val != 0) 1902 return val; 1903 if (val2 == val3 && val2 != 0) 1904 return val2; 1905 } 1906 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " 1907 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); 1908 return val; 1909#else /* EXTRA_FID_READ_TESTS */ 1910 return HFA384X_INW(reg); 1911#endif /* EXTRA_FID_READ_TESTS */ 1912} 1913 1914 1915/* Called only as a tasklet (software IRQ) */ 1916static void prism2_rx(local_info_t *local) 1917{ 1918 struct net_device *dev = local->dev; 1919 int res, rx_pending = 0; 1920 u16 len, hdr_len, rxfid, status, macport; 1921 struct hfa384x_rx_frame rxdesc; 1922 struct sk_buff *skb = NULL; 1923 1924 prism2_callback(local, PRISM2_CALLBACK_RX_START); 1925 1926 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); 1927#ifndef final_version 1928 if (rxfid == 0) { 1929 rxfid = HFA384X_INW(HFA384X_RXFID_OFF); 1930 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", 1931 rxfid); 1932 if (rxfid == 0) { 1933 schedule_work(&local->reset_queue); 1934 goto rx_dropped; 1935 } 1936 /* try to continue with the new rxfid value */ 1937 } 1938#endif 1939 1940 spin_lock(&local->baplock); 1941 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); 1942 if (!res) 1943 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); 1944 1945 if (res) { 1946 spin_unlock(&local->baplock); 1947 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, 1948 res); 1949 if (res == -ETIMEDOUT) { 1950 schedule_work(&local->reset_queue); 1951 } 1952 goto rx_dropped; 1953 } 1954 1955 len = le16_to_cpu(rxdesc.data_len); 1956 hdr_len = sizeof(rxdesc); 1957 status = le16_to_cpu(rxdesc.status); 1958 macport = (status >> 8) & 0x07; 1959 1960 /* Drop frames with too large reported payload length. Monitor mode 1961 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and 1962 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for 1963 * macport 7 */ 1964 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { 1965 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { 1966 if (len >= (u16) -14) { 1967 hdr_len -= 65535 - len; 1968 hdr_len--; 1969 } 1970 len = 0; 1971 } else { 1972 spin_unlock(&local->baplock); 1973 printk(KERN_DEBUG "%s: Received frame with invalid " 1974 "length 0x%04x\n", dev->name, len); 1975 hostap_dump_rx_header(dev->name, &rxdesc); 1976 goto rx_dropped; 1977 } 1978 } 1979 1980 skb = dev_alloc_skb(len + hdr_len); 1981 if (!skb) { 1982 spin_unlock(&local->baplock); 1983 printk(KERN_DEBUG "%s: RX failed to allocate skb\n", 1984 dev->name); 1985 goto rx_dropped; 1986 } 1987 skb->dev = dev; 1988 skb_put_data(skb, &rxdesc, hdr_len); 1989 1990 if (len > 0) 1991 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); 1992 spin_unlock(&local->baplock); 1993 if (res) { 1994 printk(KERN_DEBUG "%s: RX failed to read " 1995 "frame data\n", dev->name); 1996 goto rx_dropped; 1997 } 1998 1999 skb_queue_tail(&local->rx_list, skb); 2000 tasklet_schedule(&local->rx_tasklet); 2001 2002 rx_exit: 2003 prism2_callback(local, PRISM2_CALLBACK_RX_END); 2004 if (!rx_pending) { 2005 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); 2006 } 2007 2008 return; 2009 2010 rx_dropped: 2011 dev->stats.rx_dropped++; 2012 if (skb) 2013 dev_kfree_skb(skb); 2014 goto rx_exit; 2015} 2016 2017 2018/* Called only as a tasklet (software IRQ) */ 2019static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) 2020{ 2021 struct hfa384x_rx_frame *rxdesc; 2022 struct net_device *dev = skb->dev; 2023 struct hostap_80211_rx_status stats; 2024 int hdrlen, rx_hdrlen; 2025 2026 rx_hdrlen = sizeof(*rxdesc); 2027 if (skb->len < sizeof(*rxdesc)) { 2028 /* Allow monitor mode to receive shorter frames */ 2029 if (local->iw_mode == IW_MODE_MONITOR && 2030 skb->len >= sizeof(*rxdesc) - 30) { 2031 rx_hdrlen = skb->len; 2032 } else { 2033 dev_kfree_skb(skb); 2034 return; 2035 } 2036 } 2037 2038 rxdesc = (struct hfa384x_rx_frame *) skb->data; 2039 2040 if (local->frame_dump & PRISM2_DUMP_RX_HDR && 2041 skb->len >= sizeof(*rxdesc)) 2042 hostap_dump_rx_header(dev->name, rxdesc); 2043 2044 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && 2045 (!local->monitor_allow_fcserr || 2046 local->iw_mode != IW_MODE_MONITOR)) 2047 goto drop; 2048 2049 if (skb->len > PRISM2_DATA_MAXLEN) { 2050 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", 2051 dev->name, skb->len, PRISM2_DATA_MAXLEN); 2052 goto drop; 2053 } 2054 2055 stats.mac_time = le32_to_cpu(rxdesc->time); 2056 stats.signal = rxdesc->signal - local->rssi_to_dBm; 2057 stats.noise = rxdesc->silence - local->rssi_to_dBm; 2058 stats.rate = rxdesc->rate; 2059 2060 /* Convert Prism2 RX structure into IEEE 802.11 header */ 2061 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); 2062 if (hdrlen > rx_hdrlen) 2063 hdrlen = rx_hdrlen; 2064 2065 memmove(skb_pull(skb, rx_hdrlen - hdrlen), 2066 &rxdesc->frame_control, hdrlen); 2067 2068 hostap_80211_rx(dev, skb, &stats); 2069 return; 2070 2071 drop: 2072 dev_kfree_skb(skb); 2073} 2074 2075 2076/* Called only as a tasklet (software IRQ) */ 2077static void hostap_rx_tasklet(struct tasklet_struct *t) 2078{ 2079 local_info_t *local = from_tasklet(local, t, rx_tasklet); 2080 struct sk_buff *skb; 2081 2082 while ((skb = skb_dequeue(&local->rx_list)) != NULL) 2083 hostap_rx_skb(local, skb); 2084} 2085 2086 2087/* Called only from hardware IRQ */ 2088static void prism2_alloc_ev(struct net_device *dev) 2089{ 2090 struct hostap_interface *iface; 2091 local_info_t *local; 2092 int idx; 2093 u16 fid; 2094 2095 iface = netdev_priv(dev); 2096 local = iface->local; 2097 2098 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); 2099 2100 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); 2101 2102 spin_lock(&local->txfidlock); 2103 idx = local->next_alloc; 2104 2105 do { 2106 if (local->txfid[idx] == fid) { 2107 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", 2108 idx); 2109 2110#ifndef final_version 2111 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) 2112 printk("Already released txfid found at idx " 2113 "%d\n", idx); 2114 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) 2115 printk("Already reserved txfid found at idx " 2116 "%d\n", idx); 2117#endif 2118 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; 2119 idx++; 2120 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : 2121 idx; 2122 2123 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && 2124 netif_queue_stopped(dev)) 2125 netif_wake_queue(dev); 2126 2127 spin_unlock(&local->txfidlock); 2128 return; 2129 } 2130 2131 idx++; 2132 if (idx >= PRISM2_TXFID_COUNT) 2133 idx = 0; 2134 } while (idx != local->next_alloc); 2135 2136 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " 2137 "read 0x%04x) for alloc event\n", dev->name, fid, 2138 HFA384X_INW(HFA384X_ALLOCFID_OFF)); 2139 printk(KERN_DEBUG "TXFIDs:"); 2140 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) 2141 printk(" %04x[%04x]", local->txfid[idx], 2142 local->intransmitfid[idx]); 2143 printk("\n"); 2144 spin_unlock(&local->txfidlock); 2145 2146 /* FIX: should probably schedule reset; reference to one txfid was lost 2147 * completely.. Bad things will happen if we run out of txfids 2148 * Actually, this will cause netdev watchdog to notice TX timeout and 2149 * then card reset after all txfids have been leaked. */ 2150} 2151 2152 2153/* Called only as a tasklet (software IRQ) */ 2154static void hostap_tx_callback(local_info_t *local, 2155 struct hfa384x_tx_frame *txdesc, int ok, 2156 char *payload) 2157{ 2158 u16 sw_support, hdrlen, len; 2159 struct sk_buff *skb; 2160 struct hostap_tx_callback_info *cb; 2161 2162 /* Make sure that frame was from us. */ 2163 if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { 2164 printk(KERN_DEBUG "%s: TX callback - foreign frame\n", 2165 local->dev->name); 2166 return; 2167 } 2168 2169 sw_support = le32_to_cpu(txdesc->sw_support); 2170 2171 spin_lock(&local->lock); 2172 cb = local->tx_callback; 2173 while (cb != NULL && cb->idx != sw_support) 2174 cb = cb->next; 2175 spin_unlock(&local->lock); 2176 2177 if (cb == NULL) { 2178 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", 2179 local->dev->name, sw_support); 2180 return; 2181 } 2182 2183 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2184 len = le16_to_cpu(txdesc->data_len); 2185 skb = dev_alloc_skb(hdrlen + len); 2186 if (skb == NULL) { 2187 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " 2188 "skb\n", local->dev->name); 2189 return; 2190 } 2191 2192 skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen); 2193 if (payload) 2194 skb_put_data(skb, payload, len); 2195 2196 skb->dev = local->dev; 2197 skb_reset_mac_header(skb); 2198 2199 cb->func(skb, ok, cb->data); 2200} 2201 2202 2203/* Called only as a tasklet (software IRQ) */ 2204static int hostap_tx_compl_read(local_info_t *local, int error, 2205 struct hfa384x_tx_frame *txdesc, 2206 char **payload) 2207{ 2208 u16 fid, len; 2209 int res, ret = 0; 2210 struct net_device *dev = local->dev; 2211 2212 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); 2213 2214 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); 2215 2216 spin_lock(&local->baplock); 2217 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2218 if (!res) 2219 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); 2220 if (res) { 2221 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " 2222 "read txdesc\n", dev->name, error, fid); 2223 if (res == -ETIMEDOUT) { 2224 schedule_work(&local->reset_queue); 2225 } 2226 ret = -1; 2227 goto fail; 2228 } 2229 if (txdesc->sw_support) { 2230 len = le16_to_cpu(txdesc->data_len); 2231 if (len < PRISM2_DATA_MAXLEN) { 2232 *payload = kmalloc(len, GFP_ATOMIC); 2233 if (*payload == NULL || 2234 hfa384x_from_bap(dev, BAP0, *payload, len)) { 2235 PDEBUG(DEBUG_EXTRA, "%s: could not read TX " 2236 "frame payload\n", dev->name); 2237 kfree(*payload); 2238 *payload = NULL; 2239 ret = -1; 2240 goto fail; 2241 } 2242 } 2243 } 2244 2245 fail: 2246 spin_unlock(&local->baplock); 2247 2248 return ret; 2249} 2250 2251 2252/* Called only as a tasklet (software IRQ) */ 2253static void prism2_tx_ev(local_info_t *local) 2254{ 2255 struct net_device *dev = local->dev; 2256 char *payload = NULL; 2257 struct hfa384x_tx_frame txdesc; 2258 2259 if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) 2260 goto fail; 2261 2262 if (local->frame_dump & PRISM2_DUMP_TX_HDR) { 2263 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " 2264 "retry_count=%d tx_rate=%d seq_ctrl=%d " 2265 "duration_id=%d\n", 2266 dev->name, le16_to_cpu(txdesc.status), 2267 txdesc.retry_count, txdesc.tx_rate, 2268 le16_to_cpu(txdesc.seq_ctrl), 2269 le16_to_cpu(txdesc.duration_id)); 2270 } 2271 2272 if (txdesc.sw_support) 2273 hostap_tx_callback(local, &txdesc, 1, payload); 2274 kfree(payload); 2275 2276 fail: 2277 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); 2278} 2279 2280 2281/* Called only as a tasklet (software IRQ) */ 2282static void hostap_sta_tx_exc_tasklet(struct tasklet_struct *t) 2283{ 2284 local_info_t *local = from_tasklet(local, t, sta_tx_exc_tasklet); 2285 struct sk_buff *skb; 2286 2287 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { 2288 struct hfa384x_tx_frame *txdesc = 2289 (struct hfa384x_tx_frame *) skb->data; 2290 2291 if (skb->len >= sizeof(*txdesc)) { 2292 /* Convert Prism2 RX structure into IEEE 802.11 header 2293 */ 2294 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); 2295 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), 2296 &txdesc->frame_control, hdrlen); 2297 2298 hostap_handle_sta_tx_exc(local, skb); 2299 } 2300 dev_kfree_skb(skb); 2301 } 2302} 2303 2304 2305/* Called only as a tasklet (software IRQ) */ 2306static void prism2_txexc(local_info_t *local) 2307{ 2308 struct net_device *dev = local->dev; 2309 u16 status, fc; 2310 int show_dump, res; 2311 char *payload = NULL; 2312 struct hfa384x_tx_frame txdesc; 2313 2314 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; 2315 dev->stats.tx_errors++; 2316 2317 res = hostap_tx_compl_read(local, 1, &txdesc, &payload); 2318 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); 2319 if (res) 2320 return; 2321 2322 status = le16_to_cpu(txdesc.status); 2323 2324 /* We produce a TXDROP event only for retry or lifetime 2325 * exceeded, because that's the only status that really mean 2326 * that this particular node went away. 2327 * Other errors means that *we* screwed up. - Jean II */ 2328 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) 2329 { 2330 union iwreq_data wrqu; 2331 2332 /* Copy 802.11 dest address. */ 2333 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); 2334 wrqu.addr.sa_family = ARPHRD_ETHER; 2335 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); 2336 } else 2337 show_dump = 1; 2338 2339 if (local->iw_mode == IW_MODE_MASTER || 2340 local->iw_mode == IW_MODE_REPEAT || 2341 local->wds_type & HOSTAP_WDS_AP_CLIENT) { 2342 struct sk_buff *skb; 2343 skb = dev_alloc_skb(sizeof(txdesc)); 2344 if (skb) { 2345 skb_put_data(skb, &txdesc, sizeof(txdesc)); 2346 skb_queue_tail(&local->sta_tx_exc_list, skb); 2347 tasklet_schedule(&local->sta_tx_exc_tasklet); 2348 } 2349 } 2350 2351 if (txdesc.sw_support) 2352 hostap_tx_callback(local, &txdesc, 0, payload); 2353 kfree(payload); 2354 2355 if (!show_dump) 2356 return; 2357 2358 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" 2359 " tx_control=%04x\n", 2360 dev->name, status, 2361 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", 2362 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", 2363 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", 2364 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", 2365 le16_to_cpu(txdesc.tx_control)); 2366 2367 fc = le16_to_cpu(txdesc.frame_control); 2368 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " 2369 "(%s%s%s::%d%s%s)\n", 2370 txdesc.retry_count, txdesc.tx_rate, fc, 2371 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", 2372 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", 2373 ieee80211_is_data(txdesc.frame_control) ? "Data" : "", 2374 (fc & IEEE80211_FCTL_STYPE) >> 4, 2375 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", 2376 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); 2377 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", 2378 txdesc.addr1, txdesc.addr2, 2379 txdesc.addr3, txdesc.addr4); 2380} 2381 2382 2383/* Called only as a tasklet (software IRQ) */ 2384static void hostap_info_tasklet(struct tasklet_struct *t) 2385{ 2386 local_info_t *local = from_tasklet(local, t, info_tasklet); 2387 struct sk_buff *skb; 2388 2389 while ((skb = skb_dequeue(&local->info_list)) != NULL) { 2390 hostap_info_process(local, skb); 2391 dev_kfree_skb(skb); 2392 } 2393} 2394 2395 2396/* Called only as a tasklet (software IRQ) */ 2397static void prism2_info(local_info_t *local) 2398{ 2399 struct net_device *dev = local->dev; 2400 u16 fid; 2401 int res, left; 2402 struct hfa384x_info_frame info; 2403 struct sk_buff *skb; 2404 2405 fid = HFA384X_INW(HFA384X_INFOFID_OFF); 2406 2407 spin_lock(&local->baplock); 2408 res = hfa384x_setup_bap(dev, BAP0, fid, 0); 2409 if (!res) 2410 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); 2411 if (res) { 2412 spin_unlock(&local->baplock); 2413 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", 2414 fid); 2415 if (res == -ETIMEDOUT) { 2416 schedule_work(&local->reset_queue); 2417 } 2418 goto out; 2419 } 2420 2421 left = (le16_to_cpu(info.len) - 1) * 2; 2422 2423 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { 2424 /* data register seems to give 0x8000 in some error cases even 2425 * though busy bit is not set in offset register; 2426 * in addition, length must be at least 1 due to type field */ 2427 spin_unlock(&local->baplock); 2428 printk(KERN_DEBUG "%s: Received info frame with invalid " 2429 "length 0x%04x (type 0x%04x)\n", dev->name, 2430 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2431 goto out; 2432 } 2433 2434 skb = dev_alloc_skb(sizeof(info) + left); 2435 if (skb == NULL) { 2436 spin_unlock(&local->baplock); 2437 printk(KERN_DEBUG "%s: Could not allocate skb for info " 2438 "frame\n", dev->name); 2439 goto out; 2440 } 2441 2442 skb_put_data(skb, &info, sizeof(info)); 2443 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) 2444 { 2445 spin_unlock(&local->baplock); 2446 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " 2447 "len=0x%04x, type=0x%04x\n", dev->name, fid, 2448 le16_to_cpu(info.len), le16_to_cpu(info.type)); 2449 dev_kfree_skb(skb); 2450 goto out; 2451 } 2452 spin_unlock(&local->baplock); 2453 2454 skb_queue_tail(&local->info_list, skb); 2455 tasklet_schedule(&local->info_tasklet); 2456 2457 out: 2458 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); 2459} 2460 2461 2462/* Called only as a tasklet (software IRQ) */ 2463static void hostap_bap_tasklet(struct tasklet_struct *t) 2464{ 2465 local_info_t *local = from_tasklet(local, t, bap_tasklet); 2466 struct net_device *dev = local->dev; 2467 u16 ev; 2468 int frames = 30; 2469 2470 if (local->func->card_present && !local->func->card_present(local)) 2471 return; 2472 2473 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2474 2475 /* Process all pending BAP events without generating new interrupts 2476 * for them */ 2477 while (frames-- > 0) { 2478 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2479 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) 2480 break; 2481 if (ev & HFA384X_EV_RX) 2482 prism2_rx(local); 2483 if (ev & HFA384X_EV_INFO) 2484 prism2_info(local); 2485 if (ev & HFA384X_EV_TX) 2486 prism2_tx_ev(local); 2487 if (ev & HFA384X_EV_TXEXC) 2488 prism2_txexc(local); 2489 } 2490 2491 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2492 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); 2493 2494 /* Enable interrupts for new BAP events */ 2495 hfa384x_events_all(dev); 2496 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); 2497} 2498 2499 2500/* Called only from hardware IRQ */ 2501static void prism2_infdrop(struct net_device *dev) 2502{ 2503 static unsigned long last_inquire = 0; 2504 2505 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); 2506 2507 /* some firmware versions seem to get stuck with 2508 * full CommTallies in high traffic load cases; every 2509 * packet will then cause INFDROP event and CommTallies 2510 * info frame will not be sent automatically. Try to 2511 * get out of this state by inquiring CommTallies. */ 2512 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { 2513 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, 2514 HFA384X_INFO_COMMTALLIES, NULL, 0); 2515 last_inquire = jiffies; 2516 } 2517} 2518 2519 2520/* Called only from hardware IRQ */ 2521static void prism2_ev_tick(struct net_device *dev) 2522{ 2523 struct hostap_interface *iface; 2524 local_info_t *local; 2525 u16 evstat, inten; 2526 static int prev_stuck = 0; 2527 2528 iface = netdev_priv(dev); 2529 local = iface->local; 2530 2531 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && 2532 local->last_tick_timer) { 2533 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); 2534 inten = HFA384X_INW(HFA384X_INTEN_OFF); 2535 if (!prev_stuck) { 2536 printk(KERN_INFO "%s: SW TICK stuck? " 2537 "bits=0x%lx EvStat=%04x IntEn=%04x\n", 2538 dev->name, local->bits, evstat, inten); 2539 } 2540 local->sw_tick_stuck++; 2541 if ((evstat & HFA384X_BAP0_EVENTS) && 2542 (inten & HFA384X_BAP0_EVENTS)) { 2543 printk(KERN_INFO "%s: trying to recover from IRQ " 2544 "hang\n", dev->name); 2545 hfa384x_events_no_bap0(dev); 2546 } 2547 prev_stuck = 1; 2548 } else 2549 prev_stuck = 0; 2550} 2551 2552 2553/* Called only from hardware IRQ */ 2554static void prism2_check_magic(local_info_t *local) 2555{ 2556 /* at least PCI Prism2.5 with bus mastering seems to sometimes 2557 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the 2558 * register once or twice seems to get the correct value.. PCI cards 2559 * cannot anyway be removed during normal operation, so there is not 2560 * really any need for this verification with them. */ 2561 2562#ifndef PRISM2_PCI 2563#ifndef final_version 2564 static unsigned long last_magic_err = 0; 2565 struct net_device *dev = local->dev; 2566 2567 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { 2568 if (!local->hw_ready) 2569 return; 2570 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2571 if (time_after(jiffies, last_magic_err + 10 * HZ)) { 2572 printk("%s: Interrupt, but SWSUPPORT0 does not match: " 2573 "%04X != %04X - card removed?\n", dev->name, 2574 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2575 HFA384X_MAGIC); 2576 last_magic_err = jiffies; 2577 } else if (net_ratelimit()) { 2578 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " 2579 "MAGIC=%04x\n", dev->name, 2580 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), 2581 HFA384X_MAGIC); 2582 } 2583 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) 2584 schedule_work(&local->reset_queue); 2585 return; 2586 } 2587#endif /* final_version */ 2588#endif /* !PRISM2_PCI */ 2589} 2590 2591 2592/* Called only from hardware IRQ */ 2593static irqreturn_t prism2_interrupt(int irq, void *dev_id) 2594{ 2595 struct net_device *dev = dev_id; 2596 struct hostap_interface *iface; 2597 local_info_t *local; 2598 int events = 0; 2599 u16 ev; 2600 2601 iface = netdev_priv(dev); 2602 local = iface->local; 2603 2604 /* Detect early interrupt before driver is fully configured */ 2605 spin_lock(&local->irq_init_lock); 2606 if (!dev->base_addr) { 2607 if (net_ratelimit()) { 2608 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", 2609 dev->name); 2610 } 2611 spin_unlock(&local->irq_init_lock); 2612 return IRQ_HANDLED; 2613 } 2614 spin_unlock(&local->irq_init_lock); 2615 2616 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); 2617 2618 if (local->func->card_present && !local->func->card_present(local)) { 2619 if (net_ratelimit()) { 2620 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", 2621 dev->name); 2622 } 2623 return IRQ_HANDLED; 2624 } 2625 2626 prism2_check_magic(local); 2627 2628 for (;;) { 2629 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2630 if (ev == 0xffff) { 2631 if (local->shutdown) 2632 return IRQ_HANDLED; 2633 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); 2634 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", 2635 dev->name); 2636 return IRQ_HANDLED; 2637 } 2638 2639 ev &= HFA384X_INW(HFA384X_INTEN_OFF); 2640 if (ev == 0) 2641 break; 2642 2643 if (ev & HFA384X_EV_CMD) { 2644 prism2_cmd_ev(dev); 2645 } 2646 2647 /* Above events are needed even before hw is ready, but other 2648 * events should be skipped during initialization. This may 2649 * change for AllocEv if allocate_fid is implemented without 2650 * busy waiting. */ 2651 if (!local->hw_ready || local->hw_resetting || 2652 !local->dev_enabled) { 2653 ev = HFA384X_INW(HFA384X_EVSTAT_OFF); 2654 if (ev & HFA384X_EV_CMD) 2655 goto next_event; 2656 if ((ev & HFA384X_EVENT_MASK) == 0) 2657 return IRQ_HANDLED; 2658 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && 2659 net_ratelimit()) { 2660 printk(KERN_DEBUG "%s: prism2_interrupt: hw " 2661 "not ready; skipping events 0x%04x " 2662 "(IntEn=0x%04x)%s%s%s\n", 2663 dev->name, ev, 2664 HFA384X_INW(HFA384X_INTEN_OFF), 2665 !local->hw_ready ? " (!hw_ready)" : "", 2666 local->hw_resetting ? 2667 " (hw_resetting)" : "", 2668 !local->dev_enabled ? 2669 " (!dev_enabled)" : ""); 2670 } 2671 HFA384X_OUTW(ev, HFA384X_EVACK_OFF); 2672 return IRQ_HANDLED; 2673 } 2674 2675 if (ev & HFA384X_EV_TICK) { 2676 prism2_ev_tick(dev); 2677 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); 2678 } 2679 2680 if (ev & HFA384X_EV_ALLOC) { 2681 prism2_alloc_ev(dev); 2682 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); 2683 } 2684 2685 /* Reading data from the card is quite time consuming, so do it 2686 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed 2687 * and unmasked after needed data has been read completely. */ 2688 if (ev & HFA384X_BAP0_EVENTS) { 2689 hfa384x_events_no_bap0(dev); 2690 tasklet_schedule(&local->bap_tasklet); 2691 } 2692 2693#ifndef final_version 2694 if (ev & HFA384X_EV_WTERR) { 2695 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); 2696 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); 2697 } 2698#endif /* final_version */ 2699 2700 if (ev & HFA384X_EV_INFDROP) { 2701 prism2_infdrop(dev); 2702 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); 2703 } 2704 2705 next_event: 2706 events++; 2707 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { 2708 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " 2709 "(EvStat=0x%04x)\n", 2710 PRISM2_MAX_INTERRUPT_EVENTS, 2711 HFA384X_INW(HFA384X_EVSTAT_OFF)); 2712 break; 2713 } 2714 } 2715 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); 2716 return IRQ_RETVAL(events); 2717} 2718 2719 2720static void prism2_check_sta_fw_version(local_info_t *local) 2721{ 2722 struct hfa384x_comp_ident comp; 2723 int id, variant, major, minor; 2724 2725 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, 2726 &comp, sizeof(comp), 1) < 0) 2727 return; 2728 2729 local->fw_ap = 0; 2730 id = le16_to_cpu(comp.id); 2731 if (id != HFA384X_COMP_ID_STA) { 2732 if (id == HFA384X_COMP_ID_FW_AP) 2733 local->fw_ap = 1; 2734 return; 2735 } 2736 2737 major = __le16_to_cpu(comp.major); 2738 minor = __le16_to_cpu(comp.minor); 2739 variant = __le16_to_cpu(comp.variant); 2740 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); 2741 2742 /* Station firmware versions before 1.4.x seem to have a bug in 2743 * firmware-based WEP encryption when using Host AP mode, so use 2744 * host_encrypt as a default for them. Firmware version 1.4.9 is the 2745 * first one that has been seen to produce correct encryption, but the 2746 * bug might be fixed before that (although, at least 1.4.2 is broken). 2747 */ 2748 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); 2749 2750 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && 2751 !local->fw_encrypt_ok) { 2752 printk(KERN_DEBUG "%s: defaulting to host-based encryption as " 2753 "a workaround for firmware bug in Host AP mode WEP\n", 2754 local->dev->name); 2755 local->host_encrypt = 1; 2756 } 2757 2758 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken 2759 * in station firmware versions before 1.5.x. With these versions, the 2760 * driver uses a workaround with bogus frame format (4th address after 2761 * the payload). This is not compatible with other AP devices. Since 2762 * the firmware bug is fixed in the latest station firmware versions, 2763 * automatically enable standard compliant mode for cards using station 2764 * firmware version 1.5.0 or newer. */ 2765 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) 2766 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; 2767 else { 2768 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " 2769 "workaround for firmware bug in Host AP mode WDS\n", 2770 local->dev->name); 2771 } 2772 2773 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); 2774} 2775 2776 2777static void hostap_passive_scan(struct timer_list *t) 2778{ 2779 local_info_t *local = from_timer(local, t, passive_scan_timer); 2780 struct net_device *dev = local->dev; 2781 u16 chan; 2782 2783 if (local->passive_scan_interval <= 0) 2784 return; 2785 2786 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { 2787 int max_tries = 16; 2788 2789 /* Even though host system does not really know when the WLAN 2790 * MAC is sending frames, try to avoid changing channels for 2791 * passive scanning when a host-generated frame is being 2792 * transmitted */ 2793 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { 2794 printk(KERN_DEBUG "%s: passive scan detected pending " 2795 "TX - delaying\n", dev->name); 2796 local->passive_scan_timer.expires = jiffies + HZ / 10; 2797 add_timer(&local->passive_scan_timer); 2798 return; 2799 } 2800 2801 do { 2802 local->passive_scan_channel++; 2803 if (local->passive_scan_channel > 14) 2804 local->passive_scan_channel = 1; 2805 max_tries--; 2806 } while (!(local->channel_mask & 2807 (1 << (local->passive_scan_channel - 1))) && 2808 max_tries > 0); 2809 2810 if (max_tries == 0) { 2811 printk(KERN_INFO "%s: no allowed passive scan channels" 2812 " found\n", dev->name); 2813 return; 2814 } 2815 2816 printk(KERN_DEBUG "%s: passive scan channel %d\n", 2817 dev->name, local->passive_scan_channel); 2818 chan = local->passive_scan_channel; 2819 local->passive_scan_state = PASSIVE_SCAN_WAIT; 2820 local->passive_scan_timer.expires = jiffies + HZ / 10; 2821 } else { 2822 chan = local->channel; 2823 local->passive_scan_state = PASSIVE_SCAN_LISTEN; 2824 local->passive_scan_timer.expires = jiffies + 2825 local->passive_scan_interval * HZ; 2826 } 2827 2828 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | 2829 (HFA384X_TEST_CHANGE_CHANNEL << 8), 2830 chan, NULL, 0)) 2831 printk(KERN_ERR "%s: passive scan channel set %d " 2832 "failed\n", dev->name, chan); 2833 2834 add_timer(&local->passive_scan_timer); 2835} 2836 2837 2838/* Called only as a scheduled task when communications quality values should 2839 * be updated. */ 2840static void handle_comms_qual_update(struct work_struct *work) 2841{ 2842 local_info_t *local = 2843 container_of(work, local_info_t, comms_qual_update); 2844 prism2_update_comms_qual(local->dev); 2845} 2846 2847 2848/* Software watchdog - called as a timer. Hardware interrupt (Tick event) is 2849 * used to monitor that local->last_tick_timer is being updated. If not, 2850 * interrupt busy-loop is assumed and driver tries to recover by masking out 2851 * some events. */ 2852static void hostap_tick_timer(struct timer_list *t) 2853{ 2854 static unsigned long last_inquire = 0; 2855 local_info_t *local = from_timer(local, t, tick_timer); 2856 local->last_tick_timer = jiffies; 2857 2858 /* Inquire CommTallies every 10 seconds to keep the statistics updated 2859 * more often during low load and when using 32-bit tallies. */ 2860 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && 2861 !local->hw_downloading && local->hw_ready && 2862 !local->hw_resetting && local->dev_enabled) { 2863 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, 2864 HFA384X_INFO_COMMTALLIES, NULL, 0); 2865 last_inquire = jiffies; 2866 } 2867 2868 if ((local->last_comms_qual_update == 0 || 2869 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && 2870 (local->iw_mode == IW_MODE_INFRA || 2871 local->iw_mode == IW_MODE_ADHOC)) { 2872 schedule_work(&local->comms_qual_update); 2873 } 2874 2875 local->tick_timer.expires = jiffies + 2 * HZ; 2876 add_timer(&local->tick_timer); 2877} 2878 2879 2880#if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS) 2881static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) 2882{ 2883 return HFA384X_INW(reg); 2884} 2885 2886static int prism2_registers_proc_show(struct seq_file *m, void *v) 2887{ 2888 local_info_t *local = m->private; 2889 2890#define SHOW_REG(n) \ 2891 seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) 2892 2893 SHOW_REG(CMD); 2894 SHOW_REG(PARAM0); 2895 SHOW_REG(PARAM1); 2896 SHOW_REG(PARAM2); 2897 SHOW_REG(STATUS); 2898 SHOW_REG(RESP0); 2899 SHOW_REG(RESP1); 2900 SHOW_REG(RESP2); 2901 SHOW_REG(INFOFID); 2902 SHOW_REG(CONTROL); 2903 SHOW_REG(SELECT0); 2904 SHOW_REG(SELECT1); 2905 SHOW_REG(OFFSET0); 2906 SHOW_REG(OFFSET1); 2907 SHOW_REG(RXFID); 2908 SHOW_REG(ALLOCFID); 2909 SHOW_REG(TXCOMPLFID); 2910 SHOW_REG(SWSUPPORT0); 2911 SHOW_REG(SWSUPPORT1); 2912 SHOW_REG(SWSUPPORT2); 2913 SHOW_REG(EVSTAT); 2914 SHOW_REG(INTEN); 2915 SHOW_REG(EVACK); 2916 /* Do not read data registers, because they change the state of the 2917 * MAC (offset += 2) */ 2918 /* SHOW_REG(DATA0); */ 2919 /* SHOW_REG(DATA1); */ 2920 SHOW_REG(AUXPAGE); 2921 SHOW_REG(AUXOFFSET); 2922 /* SHOW_REG(AUXDATA); */ 2923#ifdef PRISM2_PCI 2924 SHOW_REG(PCICOR); 2925 SHOW_REG(PCIHCR); 2926 SHOW_REG(PCI_M0_ADDRH); 2927 SHOW_REG(PCI_M0_ADDRL); 2928 SHOW_REG(PCI_M0_LEN); 2929 SHOW_REG(PCI_M0_CTL); 2930 SHOW_REG(PCI_STATUS); 2931 SHOW_REG(PCI_M1_ADDRH); 2932 SHOW_REG(PCI_M1_ADDRL); 2933 SHOW_REG(PCI_M1_LEN); 2934 SHOW_REG(PCI_M1_CTL); 2935#endif /* PRISM2_PCI */ 2936 2937 return 0; 2938} 2939#endif 2940 2941struct set_tim_data { 2942 struct list_head list; 2943 int aid; 2944 int set; 2945}; 2946 2947static int prism2_set_tim(struct net_device *dev, int aid, int set) 2948{ 2949 struct list_head *ptr; 2950 struct set_tim_data *new_entry; 2951 struct hostap_interface *iface; 2952 local_info_t *local; 2953 2954 iface = netdev_priv(dev); 2955 local = iface->local; 2956 2957 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); 2958 if (new_entry == NULL) 2959 return -ENOMEM; 2960 2961 new_entry->aid = aid; 2962 new_entry->set = set; 2963 2964 spin_lock_bh(&local->set_tim_lock); 2965 list_for_each(ptr, &local->set_tim_list) { 2966 struct set_tim_data *entry = 2967 list_entry(ptr, struct set_tim_data, list); 2968 if (entry->aid == aid) { 2969 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " 2970 "set=%d ==> %d\n", 2971 local->dev->name, aid, entry->set, set); 2972 entry->set = set; 2973 kfree(new_entry); 2974 new_entry = NULL; 2975 break; 2976 } 2977 } 2978 if (new_entry) 2979 list_add_tail(&new_entry->list, &local->set_tim_list); 2980 spin_unlock_bh(&local->set_tim_lock); 2981 2982 schedule_work(&local->set_tim_queue); 2983 2984 return 0; 2985} 2986 2987 2988static void handle_set_tim_queue(struct work_struct *work) 2989{ 2990 local_info_t *local = container_of(work, local_info_t, set_tim_queue); 2991 struct set_tim_data *entry; 2992 u16 val; 2993 2994 for (;;) { 2995 entry = NULL; 2996 spin_lock_bh(&local->set_tim_lock); 2997 if (!list_empty(&local->set_tim_list)) { 2998 entry = list_entry(local->set_tim_list.next, 2999 struct set_tim_data, list); 3000 list_del(&entry->list); 3001 } 3002 spin_unlock_bh(&local->set_tim_lock); 3003 if (!entry) 3004 break; 3005 3006 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", 3007 local->dev->name, entry->aid, entry->set); 3008 3009 val = entry->aid; 3010 if (entry->set) 3011 val |= 0x8000; 3012 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { 3013 printk(KERN_DEBUG "%s: set_tim failed (aid=%d " 3014 "set=%d)\n", 3015 local->dev->name, entry->aid, entry->set); 3016 } 3017 3018 kfree(entry); 3019 } 3020} 3021 3022 3023static void prism2_clear_set_tim_queue(local_info_t *local) 3024{ 3025 struct list_head *ptr, *n; 3026 3027 list_for_each_safe(ptr, n, &local->set_tim_list) { 3028 struct set_tim_data *entry; 3029 entry = list_entry(ptr, struct set_tim_data, list); 3030 list_del(&entry->list); 3031 kfree(entry); 3032 } 3033} 3034 3035 3036/* 3037 * HostAP uses two layers of net devices, where the inner 3038 * layer gets called all the time from the outer layer. 3039 * This is a natural nesting, which needs a split lock type. 3040 */ 3041static struct lock_class_key hostap_netdev_xmit_lock_key; 3042static struct lock_class_key hostap_netdev_addr_lock_key; 3043 3044static void prism2_set_lockdep_class_one(struct net_device *dev, 3045 struct netdev_queue *txq, 3046 void *_unused) 3047{ 3048 lockdep_set_class(&txq->_xmit_lock, 3049 &hostap_netdev_xmit_lock_key); 3050} 3051 3052static void prism2_set_lockdep_class(struct net_device *dev) 3053{ 3054 lockdep_set_class(&dev->addr_list_lock, 3055 &hostap_netdev_addr_lock_key); 3056 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); 3057} 3058 3059static struct net_device * 3060prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, 3061 struct device *sdev) 3062{ 3063 struct net_device *dev; 3064 struct hostap_interface *iface; 3065 struct local_info *local; 3066 int len, i, ret; 3067 3068 if (funcs == NULL) 3069 return NULL; 3070 3071 len = strlen(dev_template); 3072 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { 3073 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", 3074 dev_template); 3075 return NULL; 3076 } 3077 3078 len = sizeof(struct hostap_interface) + 3079 3 + sizeof(struct local_info) + 3080 3 + sizeof(struct ap_data); 3081 3082 dev = alloc_etherdev(len); 3083 if (dev == NULL) 3084 return NULL; 3085 3086 iface = netdev_priv(dev); 3087 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); 3088 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); 3089 local->dev = iface->dev = dev; 3090 iface->local = local; 3091 iface->type = HOSTAP_INTERFACE_MASTER; 3092 INIT_LIST_HEAD(&local->hostap_interfaces); 3093 3094 local->hw_module = THIS_MODULE; 3095 3096#ifdef PRISM2_IO_DEBUG 3097 local->io_debug_enabled = 1; 3098#endif /* PRISM2_IO_DEBUG */ 3099 3100 local->func = funcs; 3101 local->func->cmd = hfa384x_cmd; 3102 local->func->read_regs = hfa384x_read_regs; 3103 local->func->get_rid = hfa384x_get_rid; 3104 local->func->set_rid = hfa384x_set_rid; 3105 local->func->hw_enable = prism2_hw_enable; 3106 local->func->hw_config = prism2_hw_config; 3107 local->func->hw_reset = prism2_hw_reset; 3108 local->func->hw_shutdown = prism2_hw_shutdown; 3109 local->func->reset_port = prism2_reset_port; 3110 local->func->schedule_reset = prism2_schedule_reset; 3111#ifdef PRISM2_DOWNLOAD_SUPPORT 3112 local->func->read_aux_proc_ops = &prism2_download_aux_dump_proc_ops; 3113 local->func->download = prism2_download; 3114#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3115 local->func->tx = prism2_tx_80211; 3116 local->func->set_tim = prism2_set_tim; 3117 local->func->need_tx_headroom = 0; /* no need to add txdesc in 3118 * skb->data (FIX: maybe for DMA bus 3119 * mastering? */ 3120 3121 local->mtu = mtu; 3122 3123 rwlock_init(&local->iface_lock); 3124 spin_lock_init(&local->txfidlock); 3125 spin_lock_init(&local->cmdlock); 3126 spin_lock_init(&local->baplock); 3127 spin_lock_init(&local->lock); 3128 spin_lock_init(&local->irq_init_lock); 3129 mutex_init(&local->rid_bap_mtx); 3130 3131 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) 3132 card_idx = 0; 3133 local->card_idx = card_idx; 3134 3135 len = strlen(essid); 3136 memcpy(local->essid, essid, 3137 len > MAX_SSID_LEN ? MAX_SSID_LEN : len); 3138 local->essid[MAX_SSID_LEN] = '\0'; 3139 i = GET_INT_PARM(iw_mode, card_idx); 3140 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || 3141 i == IW_MODE_MONITOR) { 3142 local->iw_mode = i; 3143 } else { 3144 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " 3145 "IW_MODE_MASTER\n", i); 3146 local->iw_mode = IW_MODE_MASTER; 3147 } 3148 local->channel = GET_INT_PARM(channel, card_idx); 3149 local->beacon_int = GET_INT_PARM(beacon_int, card_idx); 3150 local->dtim_period = GET_INT_PARM(dtim_period, card_idx); 3151 local->wds_max_connections = 16; 3152 local->tx_control = HFA384X_TX_CTRL_FLAGS; 3153 local->manual_retry_count = -1; 3154 local->rts_threshold = 2347; 3155 local->fragm_threshold = 2346; 3156 local->rssi_to_dBm = 100; /* default; to be overriden by 3157 * cnfDbmAdjust, if available */ 3158 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; 3159 local->sram_type = -1; 3160 local->scan_channel_mask = 0xffff; 3161 local->monitor_type = PRISM2_MONITOR_RADIOTAP; 3162 3163 /* Initialize task queue structures */ 3164 INIT_WORK(&local->reset_queue, handle_reset_queue); 3165 INIT_WORK(&local->set_multicast_list_queue, 3166 hostap_set_multicast_list_queue); 3167 3168 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); 3169 INIT_LIST_HEAD(&local->set_tim_list); 3170 spin_lock_init(&local->set_tim_lock); 3171 3172 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); 3173 3174 /* Initialize tasklets for handling hardware IRQ related operations 3175 * outside hw IRQ handler */ 3176 tasklet_setup(&local->bap_tasklet, hostap_bap_tasklet); 3177 tasklet_setup(&local->info_tasklet, hostap_info_tasklet); 3178 hostap_info_init(local); 3179 3180 tasklet_setup(&local->rx_tasklet, hostap_rx_tasklet); 3181 skb_queue_head_init(&local->rx_list); 3182 3183 tasklet_setup(&local->sta_tx_exc_tasklet, 3184 hostap_sta_tx_exc_tasklet); 3185 skb_queue_head_init(&local->sta_tx_exc_list); 3186 3187 INIT_LIST_HEAD(&local->cmd_queue); 3188 init_waitqueue_head(&local->hostscan_wq); 3189 3190 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); 3191 3192 timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0); 3193 timer_setup(&local->tick_timer, hostap_tick_timer, 0); 3194 local->tick_timer.expires = jiffies + 2 * HZ; 3195 add_timer(&local->tick_timer); 3196 3197 INIT_LIST_HEAD(&local->bss_list); 3198 3199 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); 3200 3201 dev->type = ARPHRD_IEEE80211; 3202 dev->header_ops = &hostap_80211_ops; 3203 3204 rtnl_lock(); 3205 ret = dev_alloc_name(dev, "wifi%d"); 3206 SET_NETDEV_DEV(dev, sdev); 3207 if (ret >= 0) 3208 ret = register_netdevice(dev); 3209 3210 prism2_set_lockdep_class(dev); 3211 rtnl_unlock(); 3212 if (ret < 0) { 3213 printk(KERN_WARNING "%s: register netdevice failed!\n", 3214 dev_info); 3215 goto fail; 3216 } 3217 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); 3218 3219 hostap_init_data(local); 3220 return dev; 3221 3222 fail: 3223 free_netdev(dev); 3224 return NULL; 3225} 3226 3227 3228static int hostap_hw_ready(struct net_device *dev) 3229{ 3230 struct hostap_interface *iface; 3231 struct local_info *local; 3232 3233 iface = netdev_priv(dev); 3234 local = iface->local; 3235 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, 3236 "", dev_template); 3237 3238 if (local->ddev) { 3239 if (local->iw_mode == IW_MODE_INFRA || 3240 local->iw_mode == IW_MODE_ADHOC) { 3241 netif_carrier_off(local->dev); 3242 netif_carrier_off(local->ddev); 3243 } 3244 hostap_init_proc(local); 3245#ifndef PRISM2_NO_PROCFS_DEBUG 3246 proc_create_single_data("registers", 0, local->proc, 3247 prism2_registers_proc_show, local); 3248#endif /* PRISM2_NO_PROCFS_DEBUG */ 3249 hostap_init_ap_proc(local); 3250 return 0; 3251 } 3252 3253 return -1; 3254} 3255 3256 3257static void prism2_free_local_data(struct net_device *dev) 3258{ 3259 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; 3260 int i; 3261 struct hostap_interface *iface; 3262 struct local_info *local; 3263 struct list_head *ptr, *n; 3264 3265 if (dev == NULL) 3266 return; 3267 3268 iface = netdev_priv(dev); 3269 local = iface->local; 3270 3271 /* Unregister all netdevs before freeing local data. */ 3272 list_for_each_safe(ptr, n, &local->hostap_interfaces) { 3273 iface = list_entry(ptr, struct hostap_interface, list); 3274 if (iface->type == HOSTAP_INTERFACE_MASTER) { 3275 /* special handling for this interface below */ 3276 continue; 3277 } 3278 hostap_remove_interface(iface->dev, 0, 1); 3279 } 3280 3281 unregister_netdev(local->dev); 3282 3283 flush_work(&local->reset_queue); 3284 flush_work(&local->set_multicast_list_queue); 3285 flush_work(&local->set_tim_queue); 3286#ifndef PRISM2_NO_STATION_MODES 3287 flush_work(&local->info_queue); 3288#endif 3289 flush_work(&local->comms_qual_update); 3290 3291 lib80211_crypt_info_free(&local->crypt_info); 3292 3293 if (timer_pending(&local->passive_scan_timer)) 3294 del_timer(&local->passive_scan_timer); 3295 3296 if (timer_pending(&local->tick_timer)) 3297 del_timer(&local->tick_timer); 3298 3299 prism2_clear_cmd_queue(local); 3300 3301 skb_queue_purge(&local->info_list); 3302 skb_queue_purge(&local->rx_list); 3303 skb_queue_purge(&local->sta_tx_exc_list); 3304 3305 if (local->dev_enabled) 3306 prism2_callback(local, PRISM2_CALLBACK_DISABLE); 3307 3308 if (local->ap != NULL) 3309 hostap_free_data(local->ap); 3310 3311#ifndef PRISM2_NO_PROCFS_DEBUG 3312 if (local->proc != NULL) 3313 remove_proc_entry("registers", local->proc); 3314#endif /* PRISM2_NO_PROCFS_DEBUG */ 3315 hostap_remove_proc(local); 3316 3317 tx_cb = local->tx_callback; 3318 while (tx_cb != NULL) { 3319 tx_cb_prev = tx_cb; 3320 tx_cb = tx_cb->next; 3321 kfree(tx_cb_prev); 3322 } 3323 3324 hostap_set_hostapd(local, 0, 0); 3325 hostap_set_hostapd_sta(local, 0, 0); 3326 3327 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { 3328 if (local->frag_cache[i].skb != NULL) 3329 dev_kfree_skb(local->frag_cache[i].skb); 3330 } 3331 3332#ifdef PRISM2_DOWNLOAD_SUPPORT 3333 prism2_download_free_data(local->dl_pri); 3334 prism2_download_free_data(local->dl_sec); 3335#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3336 3337 prism2_clear_set_tim_queue(local); 3338 3339 list_for_each_safe(ptr, n, &local->bss_list) { 3340 struct hostap_bss_info *bss = 3341 list_entry(ptr, struct hostap_bss_info, list); 3342 kfree(bss); 3343 } 3344 3345 kfree(local->pda); 3346 kfree(local->last_scan_results); 3347 kfree(local->generic_elem); 3348 3349 free_netdev(local->dev); 3350} 3351 3352 3353#if defined(PRISM2_PCI) || defined(PRISM2_PCCARD) 3354static void __maybe_unused prism2_suspend(struct net_device *dev) 3355{ 3356 struct hostap_interface *iface; 3357 struct local_info *local; 3358 union iwreq_data wrqu; 3359 3360 iface = netdev_priv(dev); 3361 local = iface->local; 3362 3363 /* Send disconnect event, e.g., to trigger reassociation after resume 3364 * if wpa_supplicant is used. */ 3365 memset(&wrqu, 0, sizeof(wrqu)); 3366 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3367 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); 3368 3369 /* Disable hardware and firmware */ 3370 prism2_hw_shutdown(dev, 0); 3371} 3372#endif /* PRISM2_PCI || PRISM2_PCCARD */ 3373 3374 3375/* These might at some point be compiled separately and used as separate 3376 * kernel modules or linked into one */ 3377#ifdef PRISM2_DOWNLOAD_SUPPORT 3378#include "hostap_download.c" 3379#endif /* PRISM2_DOWNLOAD_SUPPORT */ 3380 3381#ifdef PRISM2_CALLBACK 3382/* External hostap_callback.c file can be used to, e.g., blink activity led. 3383 * This can use platform specific code and must define prism2_callback() 3384 * function (if PRISM2_CALLBACK is not defined, these function calls are not 3385 * used. */ 3386#include "hostap_callback.c" 3387#endif /* PRISM2_CALLBACK */ 3388