Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Host AP (software wireless LAN access point) driver for |
| 3 | * Intersil Prism2/2.5/3. |
| 4 | * |
| 5 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
Jouni Malinen | 85d32e7 | 2007-03-24 17:15:30 -0700 | [diff] [blame] | 6 | * <j@w1.fi> |
| 7 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. See README and COPYING for |
| 12 | * more details. |
| 13 | * |
| 14 | * FIX: |
| 15 | * - there is currently no way of associating TX packets to correct wds device |
| 16 | * when TX Exc/OK event occurs, so all tx_packets and some |
| 17 | * tx_errors/tx_dropped are added to the main netdevice; using sw_support |
| 18 | * field in txdesc might be used to fix this (using Alloc event to increment |
| 19 | * tx_packets would need some further info in txfid table) |
| 20 | * |
| 21 | * Buffer Access Path (BAP) usage: |
| 22 | * Prism2 cards have two separate BAPs for accessing the card memory. These |
| 23 | * should allow concurrent access to two different frames and the driver |
| 24 | * previously used BAP0 for sending data and BAP1 for receiving data. |
| 25 | * However, there seems to be number of issues with concurrent access and at |
| 26 | * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI |
| 27 | * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between |
| 28 | * host and card memories. BAP0 accesses are protected with local->baplock |
| 29 | * (spin_lock_bh) to prevent concurrent use. |
| 30 | */ |
| 31 | |
| 32 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 33 | |
| 34 | #include <asm/delay.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/netdevice.h> |
| 39 | #include <linux/etherdevice.h> |
| 40 | #include <linux/proc_fs.h> |
| 41 | #include <linux/if_arp.h> |
| 42 | #include <linux/delay.h> |
| 43 | #include <linux/random.h> |
| 44 | #include <linux/wait.h> |
| 45 | #include <linux/sched.h> |
| 46 | #include <linux/rtnetlink.h> |
| 47 | #include <linux/wireless.h> |
| 48 | #include <net/iw_handler.h> |
Jouni Malinen | ebed67d | 2005-07-30 20:43:19 -0700 | [diff] [blame] | 49 | #include <net/ieee80211.h> |
| 50 | #include <net/ieee80211_crypt.h> |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 51 | #include <asm/irq.h> |
| 52 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 53 | #include "hostap_80211.h" |
| 54 | #include "hostap.h" |
| 55 | #include "hostap_ap.h" |
| 56 | |
| 57 | |
| 58 | /* #define final_version */ |
| 59 | |
| 60 | static int mtu = 1500; |
| 61 | module_param(mtu, int, 0444); |
| 62 | MODULE_PARM_DESC(mtu, "Maximum transfer unit"); |
| 63 | |
| 64 | static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; |
| 65 | module_param_array(channel, int, NULL, 0444); |
| 66 | MODULE_PARM_DESC(channel, "Initial channel"); |
| 67 | |
| 68 | static char essid[33] = "test"; |
| 69 | module_param_string(essid, essid, sizeof(essid), 0444); |
| 70 | MODULE_PARM_DESC(essid, "Host AP's ESSID"); |
| 71 | |
| 72 | static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; |
| 73 | module_param_array(iw_mode, int, NULL, 0444); |
| 74 | MODULE_PARM_DESC(iw_mode, "Initial operation mode"); |
| 75 | |
| 76 | static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; |
| 77 | module_param_array(beacon_int, int, NULL, 0444); |
| 78 | MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); |
| 79 | |
| 80 | static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; |
| 81 | module_param_array(dtim_period, int, NULL, 0444); |
| 82 | MODULE_PARM_DESC(dtim_period, "DTIM period"); |
| 83 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 84 | static char dev_template[16] = "wlan%d"; |
| 85 | module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); |
| 86 | MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " |
| 87 | "wlan%d)"); |
| 88 | |
| 89 | #ifdef final_version |
| 90 | #define EXTRA_EVENTS_WTERR 0 |
| 91 | #else |
| 92 | /* check WTERR events (Wait Time-out) in development versions */ |
| 93 | #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR |
| 94 | #endif |
| 95 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 96 | /* Events that will be using BAP0 */ |
| 97 | #define HFA384X_BAP0_EVENTS \ |
| 98 | (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) |
| 99 | |
| 100 | /* event mask, i.e., events that will result in an interrupt */ |
| 101 | #define HFA384X_EVENT_MASK \ |
| 102 | (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ |
| 103 | HFA384X_EV_CMD | HFA384X_EV_TICK | \ |
Jouni Malinen | ea3f186 | 2005-08-14 19:08:40 -0700 | [diff] [blame] | 104 | EXTRA_EVENTS_WTERR) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 105 | |
| 106 | /* Default TX control flags: use 802.11 headers and request interrupt for |
| 107 | * failed transmits. Frames that request ACK callback, will add |
| 108 | * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. |
| 109 | */ |
| 110 | #define HFA384X_TX_CTRL_FLAGS \ |
| 111 | (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) |
| 112 | |
| 113 | |
| 114 | /* ca. 1 usec */ |
| 115 | #define HFA384X_CMD_BUSY_TIMEOUT 5000 |
| 116 | #define HFA384X_BAP_BUSY_TIMEOUT 50000 |
| 117 | |
| 118 | /* ca. 10 usec */ |
| 119 | #define HFA384X_CMD_COMPL_TIMEOUT 20000 |
| 120 | #define HFA384X_DL_COMPL_TIMEOUT 1000000 |
| 121 | |
| 122 | /* Wait times for initialization; yield to other processes to avoid busy |
| 123 | * waiting for long time. */ |
| 124 | #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ |
| 125 | #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ |
| 126 | |
| 127 | |
| 128 | static void prism2_hw_reset(struct net_device *dev); |
| 129 | static void prism2_check_sta_fw_version(local_info_t *local); |
| 130 | |
| 131 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 132 | /* hostap_download.c */ |
| 133 | static int prism2_download_aux_dump(struct net_device *dev, |
| 134 | unsigned int addr, int len, u8 *buf); |
| 135 | static u8 * prism2_read_pda(struct net_device *dev); |
| 136 | static int prism2_download(local_info_t *local, |
| 137 | struct prism2_download_param *param); |
| 138 | static void prism2_download_free_data(struct prism2_download_data *dl); |
| 139 | static int prism2_download_volatile(local_info_t *local, |
| 140 | struct prism2_download_data *param); |
| 141 | static int prism2_download_genesis(local_info_t *local, |
| 142 | struct prism2_download_data *param); |
| 143 | static int prism2_get_ram_size(local_info_t *local); |
| 144 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 145 | |
| 146 | |
| 147 | |
| 148 | |
| 149 | #ifndef final_version |
| 150 | /* magic value written to SWSUPPORT0 reg. for detecting whether card is still |
| 151 | * present */ |
| 152 | #define HFA384X_MAGIC 0x8A32 |
| 153 | #endif |
| 154 | |
| 155 | |
| 156 | static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) |
| 157 | { |
| 158 | return HFA384X_INW(reg); |
| 159 | } |
| 160 | |
| 161 | |
| 162 | static void hfa384x_read_regs(struct net_device *dev, |
| 163 | struct hfa384x_regs *regs) |
| 164 | { |
| 165 | regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); |
| 166 | regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 167 | regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); |
| 168 | regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); |
| 169 | regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); |
| 170 | } |
| 171 | |
| 172 | |
| 173 | /** |
| 174 | * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) |
| 175 | * @local: pointer to private Host AP driver data |
| 176 | * @entry: Prism2 command queue entry to be freed |
| 177 | * @del_req: request the entry to be removed |
| 178 | * |
| 179 | * Internal helper function for freeing Prism2 command queue entries. |
| 180 | * Caller must have acquired local->cmdlock before calling this function. |
| 181 | */ |
| 182 | static inline void __hostap_cmd_queue_free(local_info_t *local, |
| 183 | struct hostap_cmd_queue *entry, |
| 184 | int del_req) |
| 185 | { |
| 186 | if (del_req) { |
| 187 | entry->del_req = 1; |
| 188 | if (!list_empty(&entry->list)) { |
| 189 | list_del_init(&entry->list); |
| 190 | local->cmd_queue_len--; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | if (atomic_dec_and_test(&entry->usecnt) && entry->del_req) |
| 195 | kfree(entry); |
| 196 | } |
| 197 | |
| 198 | |
| 199 | /** |
| 200 | * hostap_cmd_queue_free - Free Prism2 command queue entry |
| 201 | * @local: pointer to private Host AP driver data |
| 202 | * @entry: Prism2 command queue entry to be freed |
| 203 | * @del_req: request the entry to be removed |
| 204 | * |
| 205 | * Free a Prism2 command queue entry. |
| 206 | */ |
| 207 | static inline void hostap_cmd_queue_free(local_info_t *local, |
| 208 | struct hostap_cmd_queue *entry, |
| 209 | int del_req) |
| 210 | { |
| 211 | unsigned long flags; |
| 212 | |
| 213 | spin_lock_irqsave(&local->cmdlock, flags); |
| 214 | __hostap_cmd_queue_free(local, entry, del_req); |
| 215 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 216 | } |
| 217 | |
| 218 | |
| 219 | /** |
| 220 | * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries |
| 221 | * @local: pointer to private Host AP driver data |
| 222 | */ |
| 223 | static void prism2_clear_cmd_queue(local_info_t *local) |
| 224 | { |
| 225 | struct list_head *ptr, *n; |
| 226 | unsigned long flags; |
| 227 | struct hostap_cmd_queue *entry; |
| 228 | |
| 229 | spin_lock_irqsave(&local->cmdlock, flags); |
| 230 | list_for_each_safe(ptr, n, &local->cmd_queue) { |
| 231 | entry = list_entry(ptr, struct hostap_cmd_queue, list); |
| 232 | atomic_inc(&entry->usecnt); |
| 233 | printk(KERN_DEBUG "%s: removed pending cmd_queue entry " |
| 234 | "(type=%d, cmd=0x%04x, param0=0x%04x)\n", |
| 235 | local->dev->name, entry->type, entry->cmd, |
| 236 | entry->param0); |
| 237 | __hostap_cmd_queue_free(local, entry, 1); |
| 238 | } |
| 239 | if (local->cmd_queue_len) { |
| 240 | /* This should not happen; print debug message and clear |
| 241 | * queue length. */ |
| 242 | printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " |
| 243 | "flush\n", local->dev->name, local->cmd_queue_len); |
| 244 | local->cmd_queue_len = 0; |
| 245 | } |
| 246 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 247 | } |
| 248 | |
| 249 | |
| 250 | /** |
| 251 | * hfa384x_cmd_issue - Issue a Prism2 command to the hardware |
| 252 | * @dev: pointer to net_device |
| 253 | * @entry: Prism2 command queue entry to be issued |
| 254 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 255 | static int hfa384x_cmd_issue(struct net_device *dev, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 256 | struct hostap_cmd_queue *entry) |
| 257 | { |
| 258 | struct hostap_interface *iface; |
| 259 | local_info_t *local; |
| 260 | int tries; |
| 261 | u16 reg; |
| 262 | unsigned long flags; |
| 263 | |
| 264 | iface = netdev_priv(dev); |
| 265 | local = iface->local; |
| 266 | |
| 267 | if (local->func->card_present && !local->func->card_present(local)) |
| 268 | return -ENODEV; |
| 269 | |
| 270 | if (entry->issued) { |
| 271 | printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", |
| 272 | dev->name, entry); |
| 273 | } |
| 274 | |
| 275 | /* wait until busy bit is clear; this should always be clear since the |
| 276 | * commands are serialized */ |
| 277 | tries = HFA384X_CMD_BUSY_TIMEOUT; |
| 278 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { |
| 279 | tries--; |
| 280 | udelay(1); |
| 281 | } |
| 282 | #ifndef final_version |
| 283 | if (tries != HFA384X_CMD_BUSY_TIMEOUT) { |
| 284 | prism2_io_debug_error(dev, 1); |
| 285 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " |
| 286 | "for %d usec\n", dev->name, |
| 287 | HFA384X_CMD_BUSY_TIMEOUT - tries); |
| 288 | } |
| 289 | #endif |
| 290 | if (tries == 0) { |
| 291 | reg = HFA384X_INW(HFA384X_CMD_OFF); |
| 292 | prism2_io_debug_error(dev, 2); |
| 293 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " |
| 294 | "reg=0x%04x\n", dev->name, reg); |
| 295 | return -ETIMEDOUT; |
| 296 | } |
| 297 | |
| 298 | /* write command */ |
| 299 | spin_lock_irqsave(&local->cmdlock, flags); |
| 300 | HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); |
| 301 | HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); |
| 302 | HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); |
| 303 | entry->issued = 1; |
| 304 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 305 | |
| 306 | return 0; |
| 307 | } |
| 308 | |
| 309 | |
| 310 | /** |
| 311 | * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion |
| 312 | * @dev: pointer to net_device |
| 313 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) |
| 314 | * @param0: value for Param0 register |
| 315 | * @param1: value for Param1 register (pointer; %NULL if not used) |
| 316 | * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed |
| 317 | * |
| 318 | * Issue given command (possibly after waiting in command queue) and sleep |
| 319 | * until the command is completed (or timed out or interrupted). This can be |
| 320 | * called only from user process context. |
| 321 | */ |
| 322 | static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, |
| 323 | u16 *param1, u16 *resp0) |
| 324 | { |
| 325 | struct hostap_interface *iface; |
| 326 | local_info_t *local; |
| 327 | int err, res, issue, issued = 0; |
| 328 | unsigned long flags; |
| 329 | struct hostap_cmd_queue *entry; |
| 330 | DECLARE_WAITQUEUE(wait, current); |
| 331 | |
| 332 | iface = netdev_priv(dev); |
| 333 | local = iface->local; |
| 334 | |
| 335 | if (in_interrupt()) { |
| 336 | printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " |
| 337 | "context\n", dev->name); |
| 338 | return -1; |
| 339 | } |
| 340 | |
| 341 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { |
| 342 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", |
| 343 | dev->name); |
| 344 | return -1; |
| 345 | } |
| 346 | |
| 347 | if (signal_pending(current)) |
| 348 | return -EINTR; |
| 349 | |
Yan Burman | b0471bb7 | 2006-12-02 13:33:40 +0200 | [diff] [blame] | 350 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 351 | if (entry == NULL) { |
| 352 | printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n", |
| 353 | dev->name); |
| 354 | return -ENOMEM; |
| 355 | } |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 356 | atomic_set(&entry->usecnt, 1); |
| 357 | entry->type = CMD_SLEEP; |
| 358 | entry->cmd = cmd; |
| 359 | entry->param0 = param0; |
| 360 | if (param1) |
| 361 | entry->param1 = *param1; |
| 362 | init_waitqueue_head(&entry->compl); |
| 363 | |
| 364 | /* prepare to wait for command completion event, but do not sleep yet |
| 365 | */ |
| 366 | add_wait_queue(&entry->compl, &wait); |
| 367 | set_current_state(TASK_INTERRUPTIBLE); |
| 368 | |
| 369 | spin_lock_irqsave(&local->cmdlock, flags); |
| 370 | issue = list_empty(&local->cmd_queue); |
| 371 | if (issue) |
| 372 | entry->issuing = 1; |
| 373 | list_add_tail(&entry->list, &local->cmd_queue); |
| 374 | local->cmd_queue_len++; |
| 375 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 376 | |
| 377 | err = 0; |
| 378 | if (!issue) |
| 379 | goto wait_completion; |
| 380 | |
| 381 | if (signal_pending(current)) |
| 382 | err = -EINTR; |
| 383 | |
| 384 | if (!err) { |
| 385 | if (hfa384x_cmd_issue(dev, entry)) |
| 386 | err = -ETIMEDOUT; |
| 387 | else |
| 388 | issued = 1; |
| 389 | } |
| 390 | |
| 391 | wait_completion: |
| 392 | if (!err && entry->type != CMD_COMPLETED) { |
| 393 | /* sleep until command is completed or timed out */ |
| 394 | res = schedule_timeout(2 * HZ); |
| 395 | } else |
| 396 | res = -1; |
| 397 | |
| 398 | if (!err && signal_pending(current)) |
| 399 | err = -EINTR; |
| 400 | |
| 401 | if (err && issued) { |
| 402 | /* the command was issued, so a CmdCompl event should occur |
| 403 | * soon; however, there's a pending signal and |
| 404 | * schedule_timeout() would be interrupted; wait a short period |
| 405 | * of time to avoid removing entry from the list before |
| 406 | * CmdCompl event */ |
| 407 | udelay(300); |
| 408 | } |
| 409 | |
| 410 | set_current_state(TASK_RUNNING); |
| 411 | remove_wait_queue(&entry->compl, &wait); |
| 412 | |
| 413 | /* If entry->list is still in the list, it must be removed |
| 414 | * first and in this case prism2_cmd_ev() does not yet have |
| 415 | * local reference to it, and the data can be kfree()'d |
| 416 | * here. If the command completion event is still generated, |
| 417 | * it will be assigned to next (possibly) pending command, but |
| 418 | * the driver will reset the card anyway due to timeout |
| 419 | * |
| 420 | * If the entry is not in the list prism2_cmd_ev() has a local |
| 421 | * reference to it, but keeps cmdlock as long as the data is |
| 422 | * needed, so the data can be kfree()'d here. */ |
| 423 | |
| 424 | /* FIX: if the entry->list is in the list, it has not been completed |
| 425 | * yet, so removing it here is somewhat wrong.. this could cause |
| 426 | * references to freed memory and next list_del() causing NULL pointer |
| 427 | * dereference.. it would probably be better to leave the entry in the |
| 428 | * list and the list should be emptied during hw reset */ |
| 429 | |
| 430 | spin_lock_irqsave(&local->cmdlock, flags); |
| 431 | if (!list_empty(&entry->list)) { |
| 432 | printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " |
| 433 | "(entry=%p, type=%d, res=%d)\n", dev->name, entry, |
| 434 | entry->type, res); |
| 435 | list_del_init(&entry->list); |
| 436 | local->cmd_queue_len--; |
| 437 | } |
| 438 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 439 | |
| 440 | if (err) { |
| 441 | printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", |
| 442 | dev->name, err); |
| 443 | res = err; |
| 444 | goto done; |
| 445 | } |
| 446 | |
| 447 | if (entry->type != CMD_COMPLETED) { |
| 448 | u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 449 | printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " |
| 450 | "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " |
| 451 | "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, |
| 452 | res, entry, entry->type, entry->cmd, entry->param0, reg, |
| 453 | HFA384X_INW(HFA384X_INTEN_OFF)); |
| 454 | if (reg & HFA384X_EV_CMD) { |
| 455 | /* Command completion event is pending, but the |
| 456 | * interrupt was not delivered - probably an issue |
| 457 | * with pcmcia-cs configuration. */ |
| 458 | printk(KERN_WARNING "%s: interrupt delivery does not " |
| 459 | "seem to work\n", dev->name); |
| 460 | } |
| 461 | prism2_io_debug_error(dev, 3); |
| 462 | res = -ETIMEDOUT; |
| 463 | goto done; |
| 464 | } |
| 465 | |
| 466 | if (resp0 != NULL) |
| 467 | *resp0 = entry->resp0; |
| 468 | #ifndef final_version |
| 469 | if (entry->res) { |
| 470 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " |
| 471 | "resp0=0x%04x\n", |
| 472 | dev->name, cmd, entry->res, entry->resp0); |
| 473 | } |
| 474 | #endif /* final_version */ |
| 475 | |
| 476 | res = entry->res; |
| 477 | done: |
| 478 | hostap_cmd_queue_free(local, entry, 1); |
| 479 | return res; |
| 480 | } |
| 481 | |
| 482 | |
| 483 | /** |
| 484 | * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed |
| 485 | * @dev: pointer to net_device |
| 486 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) |
| 487 | * @param0: value for Param0 register |
| 488 | * @callback: command completion callback function (%NULL = no callback) |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 489 | * @context: context data to be given to the callback function |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 490 | * |
| 491 | * Issue given command (possibly after waiting in command queue) and use |
| 492 | * callback function to indicate command completion. This can be called both |
| 493 | * from user and interrupt context. The callback function will be called in |
| 494 | * hardware IRQ context. It can be %NULL, when no function is called when |
| 495 | * command is completed. |
| 496 | */ |
| 497 | static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, |
| 498 | void (*callback)(struct net_device *dev, |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 499 | long context, u16 resp0, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 500 | u16 status), |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 501 | long context) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 502 | { |
| 503 | struct hostap_interface *iface; |
| 504 | local_info_t *local; |
| 505 | int issue, ret; |
| 506 | unsigned long flags; |
| 507 | struct hostap_cmd_queue *entry; |
| 508 | |
| 509 | iface = netdev_priv(dev); |
| 510 | local = iface->local; |
| 511 | |
| 512 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { |
| 513 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", |
| 514 | dev->name); |
| 515 | return -1; |
| 516 | } |
| 517 | |
Yan Burman | b0471bb7 | 2006-12-02 13:33:40 +0200 | [diff] [blame] | 518 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 519 | if (entry == NULL) { |
| 520 | printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc " |
| 521 | "failed\n", dev->name); |
| 522 | return -ENOMEM; |
| 523 | } |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 524 | atomic_set(&entry->usecnt, 1); |
| 525 | entry->type = CMD_CALLBACK; |
| 526 | entry->cmd = cmd; |
| 527 | entry->param0 = param0; |
| 528 | entry->callback = callback; |
| 529 | entry->context = context; |
| 530 | |
| 531 | spin_lock_irqsave(&local->cmdlock, flags); |
| 532 | issue = list_empty(&local->cmd_queue); |
| 533 | if (issue) |
| 534 | entry->issuing = 1; |
| 535 | list_add_tail(&entry->list, &local->cmd_queue); |
| 536 | local->cmd_queue_len++; |
| 537 | spin_unlock_irqrestore(&local->cmdlock, flags); |
| 538 | |
| 539 | if (issue && hfa384x_cmd_issue(dev, entry)) |
| 540 | ret = -ETIMEDOUT; |
| 541 | else |
| 542 | ret = 0; |
| 543 | |
| 544 | hostap_cmd_queue_free(local, entry, ret); |
| 545 | |
| 546 | return ret; |
| 547 | } |
| 548 | |
| 549 | |
| 550 | /** |
| 551 | * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) |
| 552 | * @dev: pointer to net_device |
| 553 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) |
| 554 | * @param0: value for Param0 register |
| 555 | * @io_debug_num: I/O debug error number |
| 556 | * |
| 557 | * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). |
| 558 | */ |
| 559 | static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, |
| 560 | int io_debug_num) |
| 561 | { |
| 562 | int tries; |
| 563 | u16 reg; |
| 564 | |
| 565 | /* wait until busy bit is clear; this should always be clear since the |
| 566 | * commands are serialized */ |
| 567 | tries = HFA384X_CMD_BUSY_TIMEOUT; |
| 568 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { |
| 569 | tries--; |
| 570 | udelay(1); |
| 571 | } |
| 572 | if (tries == 0) { |
| 573 | reg = HFA384X_INW(HFA384X_CMD_OFF); |
| 574 | prism2_io_debug_error(dev, io_debug_num); |
| 575 | printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " |
| 576 | "reg=0x%04x\n", dev->name, io_debug_num, reg); |
| 577 | return -ETIMEDOUT; |
| 578 | } |
| 579 | |
| 580 | /* write command */ |
| 581 | HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); |
| 582 | HFA384X_OUTW(cmd, HFA384X_CMD_OFF); |
| 583 | |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | |
| 588 | /** |
| 589 | * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion |
| 590 | * @dev: pointer to net_device |
| 591 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) |
| 592 | * @param0: value for Param0 register |
| 593 | */ |
| 594 | static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) |
| 595 | { |
| 596 | int res, tries; |
| 597 | u16 reg; |
| 598 | |
| 599 | res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); |
| 600 | if (res) |
| 601 | return res; |
| 602 | |
| 603 | /* wait for command completion */ |
| 604 | if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) |
| 605 | tries = HFA384X_DL_COMPL_TIMEOUT; |
| 606 | else |
| 607 | tries = HFA384X_CMD_COMPL_TIMEOUT; |
| 608 | |
| 609 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && |
| 610 | tries > 0) { |
| 611 | tries--; |
| 612 | udelay(10); |
| 613 | } |
| 614 | if (tries == 0) { |
| 615 | reg = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 616 | prism2_io_debug_error(dev, 5); |
| 617 | printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " |
| 618 | "reg=0x%04x\n", dev->name, reg); |
| 619 | return -ETIMEDOUT; |
| 620 | } |
| 621 | |
| 622 | res = (HFA384X_INW(HFA384X_STATUS_OFF) & |
| 623 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | |
| 624 | BIT(8))) >> 8; |
| 625 | #ifndef final_version |
| 626 | if (res) { |
| 627 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", |
| 628 | dev->name, cmd, res); |
| 629 | } |
| 630 | #endif |
| 631 | |
| 632 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); |
| 633 | |
| 634 | return res; |
| 635 | } |
| 636 | |
| 637 | |
| 638 | /** |
| 639 | * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion |
| 640 | * @dev: pointer to net_device |
| 641 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) |
| 642 | * @param0: value for Param0 register |
| 643 | */ |
| 644 | static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, |
| 645 | u16 param0) |
| 646 | { |
| 647 | return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); |
| 648 | } |
| 649 | |
| 650 | |
| 651 | /** |
| 652 | * prism2_cmd_ev - Prism2 command completion event handler |
| 653 | * @dev: pointer to net_device |
| 654 | * |
| 655 | * Interrupt handler for command completion events. Called by the main |
| 656 | * interrupt handler in hardware IRQ context. Read Resp0 and status registers |
| 657 | * from the hardware and ACK the event. Depending on the issued command type |
| 658 | * either wake up the sleeping process that is waiting for command completion |
| 659 | * or call the callback function. Issue the next command, if one is pending. |
| 660 | */ |
| 661 | static void prism2_cmd_ev(struct net_device *dev) |
| 662 | { |
| 663 | struct hostap_interface *iface; |
| 664 | local_info_t *local; |
| 665 | struct hostap_cmd_queue *entry = NULL; |
| 666 | |
| 667 | iface = netdev_priv(dev); |
| 668 | local = iface->local; |
| 669 | |
| 670 | spin_lock(&local->cmdlock); |
| 671 | if (!list_empty(&local->cmd_queue)) { |
| 672 | entry = list_entry(local->cmd_queue.next, |
| 673 | struct hostap_cmd_queue, list); |
| 674 | atomic_inc(&entry->usecnt); |
| 675 | list_del_init(&entry->list); |
| 676 | local->cmd_queue_len--; |
| 677 | |
| 678 | if (!entry->issued) { |
| 679 | printk(KERN_DEBUG "%s: Command completion event, but " |
| 680 | "cmd not issued\n", dev->name); |
| 681 | __hostap_cmd_queue_free(local, entry, 1); |
| 682 | entry = NULL; |
| 683 | } |
| 684 | } |
| 685 | spin_unlock(&local->cmdlock); |
| 686 | |
| 687 | if (!entry) { |
| 688 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); |
| 689 | printk(KERN_DEBUG "%s: Command completion event, but no " |
| 690 | "pending commands\n", dev->name); |
| 691 | return; |
| 692 | } |
| 693 | |
| 694 | entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); |
| 695 | entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & |
| 696 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | |
| 697 | BIT(9) | BIT(8))) >> 8; |
| 698 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); |
| 699 | |
| 700 | /* TODO: rest of the CmdEv handling could be moved to tasklet */ |
| 701 | if (entry->type == CMD_SLEEP) { |
| 702 | entry->type = CMD_COMPLETED; |
| 703 | wake_up_interruptible(&entry->compl); |
| 704 | } else if (entry->type == CMD_CALLBACK) { |
| 705 | if (entry->callback) |
| 706 | entry->callback(dev, entry->context, entry->resp0, |
| 707 | entry->res); |
| 708 | } else { |
| 709 | printk(KERN_DEBUG "%s: Invalid command completion type %d\n", |
| 710 | dev->name, entry->type); |
| 711 | } |
| 712 | hostap_cmd_queue_free(local, entry, 1); |
| 713 | |
| 714 | /* issue next command, if pending */ |
| 715 | entry = NULL; |
| 716 | spin_lock(&local->cmdlock); |
| 717 | if (!list_empty(&local->cmd_queue)) { |
| 718 | entry = list_entry(local->cmd_queue.next, |
| 719 | struct hostap_cmd_queue, list); |
| 720 | if (entry->issuing) { |
| 721 | /* hfa384x_cmd() has already started issuing this |
| 722 | * command, so do not start here */ |
| 723 | entry = NULL; |
| 724 | } |
| 725 | if (entry) |
| 726 | atomic_inc(&entry->usecnt); |
| 727 | } |
| 728 | spin_unlock(&local->cmdlock); |
| 729 | |
| 730 | if (entry) { |
| 731 | /* issue next command; if command issuing fails, remove the |
| 732 | * entry from cmd_queue */ |
| 733 | int res = hfa384x_cmd_issue(dev, entry); |
| 734 | spin_lock(&local->cmdlock); |
| 735 | __hostap_cmd_queue_free(local, entry, res); |
| 736 | spin_unlock(&local->cmdlock); |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 741 | static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 742 | { |
| 743 | int tries = HFA384X_BAP_BUSY_TIMEOUT; |
| 744 | int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; |
| 745 | |
| 746 | while (res && tries > 0) { |
| 747 | tries--; |
| 748 | udelay(1); |
| 749 | res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; |
| 750 | } |
| 751 | return res; |
| 752 | } |
| 753 | |
| 754 | |
| 755 | /* Offset must be even */ |
| 756 | static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, |
| 757 | int offset) |
| 758 | { |
| 759 | u16 o_off, s_off; |
| 760 | int ret = 0; |
| 761 | |
| 762 | if (offset % 2 || bap > 1) |
| 763 | return -EINVAL; |
| 764 | |
| 765 | if (bap == BAP1) { |
| 766 | o_off = HFA384X_OFFSET1_OFF; |
| 767 | s_off = HFA384X_SELECT1_OFF; |
| 768 | } else { |
| 769 | o_off = HFA384X_OFFSET0_OFF; |
| 770 | s_off = HFA384X_SELECT0_OFF; |
| 771 | } |
| 772 | |
| 773 | if (hfa384x_wait_offset(dev, o_off)) { |
| 774 | prism2_io_debug_error(dev, 7); |
| 775 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", |
| 776 | dev->name); |
| 777 | ret = -ETIMEDOUT; |
| 778 | goto out; |
| 779 | } |
| 780 | |
| 781 | HFA384X_OUTW(id, s_off); |
| 782 | HFA384X_OUTW(offset, o_off); |
| 783 | |
| 784 | if (hfa384x_wait_offset(dev, o_off)) { |
| 785 | prism2_io_debug_error(dev, 8); |
| 786 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", |
| 787 | dev->name); |
| 788 | ret = -ETIMEDOUT; |
| 789 | goto out; |
| 790 | } |
| 791 | #ifndef final_version |
| 792 | if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { |
| 793 | prism2_io_debug_error(dev, 9); |
| 794 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " |
| 795 | "(%d,0x04%x,%d); reg=0x%04x\n", |
| 796 | dev->name, bap, id, offset, HFA384X_INW(o_off)); |
| 797 | ret = -EINVAL; |
| 798 | } |
| 799 | #endif |
| 800 | |
| 801 | out: |
| 802 | return ret; |
| 803 | } |
| 804 | |
| 805 | |
| 806 | static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, |
| 807 | int exact_len) |
| 808 | { |
| 809 | struct hostap_interface *iface; |
| 810 | local_info_t *local; |
| 811 | int res, rlen = 0; |
| 812 | struct hfa384x_rid_hdr rec; |
| 813 | |
| 814 | iface = netdev_priv(dev); |
| 815 | local = iface->local; |
| 816 | |
| 817 | if (local->no_pri) { |
| 818 | printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " |
| 819 | "f/w\n", dev->name, rid, len); |
| 820 | return -ENOTTY; /* Well.. not really correct, but return |
| 821 | * something unique enough.. */ |
| 822 | } |
| 823 | |
| 824 | if ((local->func->card_present && !local->func->card_present(local)) || |
| 825 | local->hw_downloading) |
| 826 | return -ENODEV; |
| 827 | |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 828 | res = mutex_lock_interruptible(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 829 | if (res) |
| 830 | return res; |
| 831 | |
| 832 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); |
| 833 | if (res) { |
| 834 | printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " |
| 835 | "(res=%d, rid=%04x, len=%d)\n", |
| 836 | dev->name, res, rid, len); |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 837 | mutex_unlock(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 838 | return res; |
| 839 | } |
| 840 | |
| 841 | spin_lock_bh(&local->baplock); |
| 842 | |
| 843 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); |
| 844 | if (!res) |
| 845 | res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); |
| 846 | |
| 847 | if (le16_to_cpu(rec.len) == 0) { |
| 848 | /* RID not available */ |
| 849 | res = -ENODATA; |
| 850 | } |
| 851 | |
| 852 | rlen = (le16_to_cpu(rec.len) - 1) * 2; |
| 853 | if (!res && exact_len && rlen != len) { |
| 854 | printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " |
| 855 | "rid=0x%04x, len=%d (expected %d)\n", |
| 856 | dev->name, rid, rlen, len); |
| 857 | res = -ENODATA; |
| 858 | } |
| 859 | |
| 860 | if (!res) |
| 861 | res = hfa384x_from_bap(dev, BAP0, buf, len); |
| 862 | |
| 863 | spin_unlock_bh(&local->baplock); |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 864 | mutex_unlock(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 865 | |
| 866 | if (res) { |
| 867 | if (res != -ENODATA) |
| 868 | printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " |
| 869 | "len=%d) - failed - res=%d\n", dev->name, rid, |
| 870 | len, res); |
| 871 | if (res == -ETIMEDOUT) |
| 872 | prism2_hw_reset(dev); |
| 873 | return res; |
| 874 | } |
| 875 | |
| 876 | return rlen; |
| 877 | } |
| 878 | |
| 879 | |
| 880 | static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) |
| 881 | { |
| 882 | struct hostap_interface *iface; |
| 883 | local_info_t *local; |
| 884 | struct hfa384x_rid_hdr rec; |
| 885 | int res; |
| 886 | |
| 887 | iface = netdev_priv(dev); |
| 888 | local = iface->local; |
| 889 | |
| 890 | if (local->no_pri) { |
| 891 | printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " |
| 892 | "f/w\n", dev->name, rid, len); |
| 893 | return -ENOTTY; /* Well.. not really correct, but return |
| 894 | * something unique enough.. */ |
| 895 | } |
| 896 | |
| 897 | if ((local->func->card_present && !local->func->card_present(local)) || |
| 898 | local->hw_downloading) |
| 899 | return -ENODEV; |
| 900 | |
| 901 | rec.rid = cpu_to_le16(rid); |
| 902 | /* RID len in words and +1 for rec.rid */ |
| 903 | rec.len = cpu_to_le16(len / 2 + len % 2 + 1); |
| 904 | |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 905 | res = mutex_lock_interruptible(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 906 | if (res) |
| 907 | return res; |
| 908 | |
| 909 | spin_lock_bh(&local->baplock); |
| 910 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); |
| 911 | if (!res) |
| 912 | res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); |
| 913 | if (!res) |
| 914 | res = hfa384x_to_bap(dev, BAP0, buf, len); |
| 915 | spin_unlock_bh(&local->baplock); |
| 916 | |
| 917 | if (res) { |
| 918 | printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " |
| 919 | "failed - res=%d\n", dev->name, rid, len, res); |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 920 | mutex_unlock(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 921 | return res; |
| 922 | } |
| 923 | |
| 924 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 925 | mutex_unlock(&local->rid_bap_mtx); |
Adrian Bunk | 971d1e6 | 2006-03-19 19:21:44 -0800 | [diff] [blame] | 926 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 927 | if (res) { |
| 928 | printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " |
| 929 | "failed (res=%d, rid=%04x, len=%d)\n", |
| 930 | dev->name, res, rid, len); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 931 | |
Adrian Bunk | 971d1e6 | 2006-03-19 19:21:44 -0800 | [diff] [blame] | 932 | if (res == -ETIMEDOUT) |
| 933 | prism2_hw_reset(dev); |
| 934 | } |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 935 | |
| 936 | return res; |
| 937 | } |
| 938 | |
| 939 | |
| 940 | static void hfa384x_disable_interrupts(struct net_device *dev) |
| 941 | { |
| 942 | /* disable interrupts and clear event status */ |
| 943 | HFA384X_OUTW(0, HFA384X_INTEN_OFF); |
| 944 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); |
| 945 | } |
| 946 | |
| 947 | |
| 948 | static void hfa384x_enable_interrupts(struct net_device *dev) |
| 949 | { |
| 950 | /* ack pending events and enable interrupts from selected events */ |
| 951 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); |
| 952 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); |
| 953 | } |
| 954 | |
| 955 | |
| 956 | static void hfa384x_events_no_bap0(struct net_device *dev) |
| 957 | { |
| 958 | HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, |
| 959 | HFA384X_INTEN_OFF); |
| 960 | } |
| 961 | |
| 962 | |
| 963 | static void hfa384x_events_all(struct net_device *dev) |
| 964 | { |
| 965 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); |
| 966 | } |
| 967 | |
| 968 | |
| 969 | static void hfa384x_events_only_cmd(struct net_device *dev) |
| 970 | { |
| 971 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); |
| 972 | } |
| 973 | |
| 974 | |
| 975 | static u16 hfa384x_allocate_fid(struct net_device *dev, int len) |
| 976 | { |
| 977 | u16 fid; |
| 978 | unsigned long delay; |
| 979 | |
| 980 | /* FIX: this could be replace with hfa384x_cmd() if the Alloc event |
| 981 | * below would be handled like CmdCompl event (sleep here, wake up from |
| 982 | * interrupt handler */ |
| 983 | if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { |
| 984 | printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", |
| 985 | dev->name, len); |
| 986 | return 0xffff; |
| 987 | } |
| 988 | |
| 989 | delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; |
| 990 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && |
| 991 | time_before(jiffies, delay)) |
| 992 | yield(); |
| 993 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { |
| 994 | printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); |
| 995 | return 0xffff; |
| 996 | } |
| 997 | |
| 998 | fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); |
| 999 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); |
| 1000 | |
| 1001 | return fid; |
| 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | static int prism2_reset_port(struct net_device *dev) |
| 1006 | { |
| 1007 | struct hostap_interface *iface; |
| 1008 | local_info_t *local; |
| 1009 | int res; |
| 1010 | |
| 1011 | iface = netdev_priv(dev); |
| 1012 | local = iface->local; |
| 1013 | |
| 1014 | if (!local->dev_enabled) |
| 1015 | return 0; |
| 1016 | |
| 1017 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, |
| 1018 | NULL, NULL); |
| 1019 | if (res) |
| 1020 | printk(KERN_DEBUG "%s: reset port failed to disable port\n", |
| 1021 | dev->name); |
| 1022 | else { |
| 1023 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, |
| 1024 | NULL, NULL); |
| 1025 | if (res) |
| 1026 | printk(KERN_DEBUG "%s: reset port failed to enable " |
| 1027 | "port\n", dev->name); |
| 1028 | } |
| 1029 | |
| 1030 | /* It looks like at least some STA firmware versions reset |
| 1031 | * fragmentation threshold back to 2346 after enable command. Restore |
| 1032 | * the configured value, if it differs from this default. */ |
| 1033 | if (local->fragm_threshold != 2346 && |
| 1034 | hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, |
| 1035 | local->fragm_threshold)) { |
| 1036 | printk(KERN_DEBUG "%s: failed to restore fragmentation " |
| 1037 | "threshold (%d) after Port0 enable\n", |
| 1038 | dev->name, local->fragm_threshold); |
| 1039 | } |
| 1040 | |
Pavel Roskin | 9b5cce0 | 2006-08-15 21:41:39 -0400 | [diff] [blame] | 1041 | /* Some firmwares lose antenna selection settings on reset */ |
| 1042 | (void) hostap_set_antsel(local); |
| 1043 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1044 | return res; |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | static int prism2_get_version_info(struct net_device *dev, u16 rid, |
| 1049 | const char *txt) |
| 1050 | { |
| 1051 | struct hfa384x_comp_ident comp; |
| 1052 | struct hostap_interface *iface; |
| 1053 | local_info_t *local; |
| 1054 | |
| 1055 | iface = netdev_priv(dev); |
| 1056 | local = iface->local; |
| 1057 | |
| 1058 | if (local->no_pri) { |
| 1059 | /* PRI f/w not yet available - cannot read RIDs */ |
| 1060 | return -1; |
| 1061 | } |
| 1062 | if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { |
| 1063 | printk(KERN_DEBUG "Could not get RID for component %s\n", txt); |
| 1064 | return -1; |
| 1065 | } |
| 1066 | |
| 1067 | printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, |
| 1068 | __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), |
| 1069 | __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | |
| 1074 | static int prism2_setup_rids(struct net_device *dev) |
| 1075 | { |
| 1076 | struct hostap_interface *iface; |
| 1077 | local_info_t *local; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1078 | __le16 tmp; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1079 | int ret = 0; |
| 1080 | |
| 1081 | iface = netdev_priv(dev); |
| 1082 | local = iface->local; |
| 1083 | |
| 1084 | hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); |
| 1085 | |
| 1086 | if (!local->fw_ap) { |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1087 | u16 tmp1 = hostap_get_porttype(local); |
| 1088 | ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1089 | if (ret) { |
| 1090 | printk("%s: Port type setting to %d failed\n", |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1091 | dev->name, tmp1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1092 | goto fail; |
| 1093 | } |
| 1094 | } |
| 1095 | |
| 1096 | /* Setting SSID to empty string seems to kill the card in Host AP mode |
| 1097 | */ |
| 1098 | if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { |
| 1099 | ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, |
| 1100 | local->essid); |
| 1101 | if (ret) { |
| 1102 | printk("%s: AP own SSID setting failed\n", dev->name); |
| 1103 | goto fail; |
| 1104 | } |
| 1105 | } |
| 1106 | |
| 1107 | ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, |
| 1108 | PRISM2_DATA_MAXLEN); |
| 1109 | if (ret) { |
| 1110 | printk("%s: MAC data length setting to %d failed\n", |
| 1111 | dev->name, PRISM2_DATA_MAXLEN); |
| 1112 | goto fail; |
| 1113 | } |
| 1114 | |
| 1115 | if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { |
| 1116 | printk("%s: Channel list read failed\n", dev->name); |
| 1117 | ret = -EINVAL; |
| 1118 | goto fail; |
| 1119 | } |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1120 | local->channel_mask = le16_to_cpu(tmp); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1121 | |
| 1122 | if (local->channel < 1 || local->channel > 14 || |
| 1123 | !(local->channel_mask & (1 << (local->channel - 1)))) { |
| 1124 | printk(KERN_WARNING "%s: Channel setting out of range " |
| 1125 | "(%d)!\n", dev->name, local->channel); |
| 1126 | ret = -EBUSY; |
| 1127 | goto fail; |
| 1128 | } |
| 1129 | |
| 1130 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); |
| 1131 | if (ret) { |
| 1132 | printk("%s: Channel setting to %d failed\n", |
| 1133 | dev->name, local->channel); |
| 1134 | goto fail; |
| 1135 | } |
| 1136 | |
| 1137 | ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, |
| 1138 | local->beacon_int); |
| 1139 | if (ret) { |
| 1140 | printk("%s: Beacon interval setting to %d failed\n", |
| 1141 | dev->name, local->beacon_int); |
| 1142 | /* this may fail with Symbol/Lucent firmware */ |
| 1143 | if (ret == -ETIMEDOUT) |
| 1144 | goto fail; |
| 1145 | } |
| 1146 | |
| 1147 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, |
| 1148 | local->dtim_period); |
| 1149 | if (ret) { |
| 1150 | printk("%s: DTIM period setting to %d failed\n", |
| 1151 | dev->name, local->dtim_period); |
| 1152 | /* this may fail with Symbol/Lucent firmware */ |
| 1153 | if (ret == -ETIMEDOUT) |
| 1154 | goto fail; |
| 1155 | } |
| 1156 | |
| 1157 | ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, |
| 1158 | local->is_promisc); |
| 1159 | if (ret) |
| 1160 | printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", |
| 1161 | dev->name, local->is_promisc); |
| 1162 | |
| 1163 | if (!local->fw_ap) { |
| 1164 | ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, |
| 1165 | local->essid); |
| 1166 | if (ret) { |
| 1167 | printk("%s: Desired SSID setting failed\n", dev->name); |
| 1168 | goto fail; |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and |
| 1173 | * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic |
| 1174 | * rates */ |
| 1175 | if (local->tx_rate_control == 0) { |
| 1176 | local->tx_rate_control = |
| 1177 | HFA384X_RATES_1MBPS | |
| 1178 | HFA384X_RATES_2MBPS | |
| 1179 | HFA384X_RATES_5MBPS | |
| 1180 | HFA384X_RATES_11MBPS; |
| 1181 | } |
| 1182 | if (local->basic_rates == 0) |
| 1183 | local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; |
| 1184 | |
| 1185 | if (!local->fw_ap) { |
| 1186 | ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, |
| 1187 | local->tx_rate_control); |
| 1188 | if (ret) { |
| 1189 | printk("%s: TXRateControl setting to %d failed\n", |
| 1190 | dev->name, local->tx_rate_control); |
| 1191 | goto fail; |
| 1192 | } |
| 1193 | |
| 1194 | ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, |
| 1195 | local->tx_rate_control); |
| 1196 | if (ret) { |
| 1197 | printk("%s: cnfSupportedRates setting to %d failed\n", |
| 1198 | dev->name, local->tx_rate_control); |
| 1199 | } |
| 1200 | |
| 1201 | ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, |
| 1202 | local->basic_rates); |
| 1203 | if (ret) { |
| 1204 | printk("%s: cnfBasicRates setting to %d failed\n", |
| 1205 | dev->name, local->basic_rates); |
| 1206 | } |
| 1207 | |
| 1208 | ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); |
| 1209 | if (ret) { |
| 1210 | printk("%s: Create IBSS setting to 1 failed\n", |
| 1211 | dev->name); |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | if (local->name_set) |
| 1216 | (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, |
| 1217 | local->name); |
| 1218 | |
| 1219 | if (hostap_set_encryption(local)) { |
| 1220 | printk(KERN_INFO "%s: could not configure encryption\n", |
| 1221 | dev->name); |
| 1222 | } |
| 1223 | |
| 1224 | (void) hostap_set_antsel(local); |
| 1225 | |
| 1226 | if (hostap_set_roaming(local)) { |
| 1227 | printk(KERN_INFO "%s: could not set host roaming\n", |
| 1228 | dev->name); |
| 1229 | } |
| 1230 | |
| 1231 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && |
| 1232 | hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) |
| 1233 | printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", |
| 1234 | dev->name, local->enh_sec); |
| 1235 | |
| 1236 | /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently |
| 1237 | * not working correctly (last seven counters report bogus values). |
| 1238 | * This has been fixed in 0.8.2, so enable 32-bit tallies only |
| 1239 | * beginning with that firmware version. Another bug fix for 32-bit |
| 1240 | * tallies in 1.4.0; should 16-bit tallies be used for some other |
| 1241 | * versions, too? */ |
| 1242 | if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { |
| 1243 | if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { |
| 1244 | printk(KERN_INFO "%s: cnfThirty2Tally setting " |
| 1245 | "failed\n", dev->name); |
| 1246 | local->tallies32 = 0; |
| 1247 | } else |
| 1248 | local->tallies32 = 1; |
| 1249 | } else |
| 1250 | local->tallies32 = 0; |
| 1251 | |
| 1252 | hostap_set_auth_algs(local); |
| 1253 | |
| 1254 | if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, |
| 1255 | local->fragm_threshold)) { |
| 1256 | printk(KERN_INFO "%s: setting FragmentationThreshold to %d " |
| 1257 | "failed\n", dev->name, local->fragm_threshold); |
| 1258 | } |
| 1259 | |
| 1260 | if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, |
| 1261 | local->rts_threshold)) { |
| 1262 | printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", |
| 1263 | dev->name, local->rts_threshold); |
| 1264 | } |
| 1265 | |
| 1266 | if (local->manual_retry_count >= 0 && |
| 1267 | hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, |
| 1268 | local->manual_retry_count)) { |
| 1269 | printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", |
| 1270 | dev->name, local->manual_retry_count); |
| 1271 | } |
| 1272 | |
| 1273 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && |
| 1274 | hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { |
| 1275 | local->rssi_to_dBm = le16_to_cpu(tmp); |
| 1276 | } |
| 1277 | |
| 1278 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && |
| 1279 | hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { |
| 1280 | printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", |
| 1281 | dev->name); |
| 1282 | } |
| 1283 | |
| 1284 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && |
| 1285 | hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, |
| 1286 | local->generic_elem, local->generic_elem_len)) { |
| 1287 | printk(KERN_INFO "%s: setting genericElement failed\n", |
| 1288 | dev->name); |
| 1289 | } |
| 1290 | |
| 1291 | fail: |
| 1292 | return ret; |
| 1293 | } |
| 1294 | |
| 1295 | |
| 1296 | static int prism2_hw_init(struct net_device *dev, int initial) |
| 1297 | { |
| 1298 | struct hostap_interface *iface; |
| 1299 | local_info_t *local; |
| 1300 | int ret, first = 1; |
| 1301 | unsigned long start, delay; |
| 1302 | |
| 1303 | PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); |
| 1304 | |
| 1305 | iface = netdev_priv(dev); |
| 1306 | local = iface->local; |
| 1307 | |
| 1308 | clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); |
| 1309 | |
| 1310 | init: |
| 1311 | /* initialize HFA 384x */ |
| 1312 | ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); |
| 1313 | if (ret) { |
| 1314 | printk(KERN_INFO "%s: first command failed - assuming card " |
| 1315 | "does not have primary firmware\n", dev_info); |
| 1316 | } |
| 1317 | |
| 1318 | if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { |
| 1319 | /* EvStat has Cmd bit set in some cases, so retry once if no |
| 1320 | * wait was needed */ |
| 1321 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); |
| 1322 | printk(KERN_DEBUG "%s: init command completed too quickly - " |
| 1323 | "retrying\n", dev->name); |
| 1324 | first = 0; |
| 1325 | goto init; |
| 1326 | } |
| 1327 | |
| 1328 | start = jiffies; |
| 1329 | delay = jiffies + HFA384X_INIT_TIMEOUT; |
| 1330 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && |
| 1331 | time_before(jiffies, delay)) |
| 1332 | yield(); |
| 1333 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { |
| 1334 | printk(KERN_DEBUG "%s: assuming no Primary image in " |
| 1335 | "flash - card initialization not completed\n", |
| 1336 | dev_info); |
| 1337 | local->no_pri = 1; |
| 1338 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 1339 | if (local->sram_type == -1) |
| 1340 | local->sram_type = prism2_get_ram_size(local); |
| 1341 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 1342 | return 1; |
| 1343 | } |
| 1344 | local->no_pri = 0; |
| 1345 | printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", |
| 1346 | (jiffies - start) * 1000 / HZ); |
| 1347 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); |
| 1348 | return 0; |
| 1349 | } |
| 1350 | |
| 1351 | |
| 1352 | static int prism2_hw_init2(struct net_device *dev, int initial) |
| 1353 | { |
| 1354 | struct hostap_interface *iface; |
| 1355 | local_info_t *local; |
| 1356 | int i; |
| 1357 | |
| 1358 | iface = netdev_priv(dev); |
| 1359 | local = iface->local; |
| 1360 | |
| 1361 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 1362 | kfree(local->pda); |
| 1363 | if (local->no_pri) |
| 1364 | local->pda = NULL; |
| 1365 | else |
| 1366 | local->pda = prism2_read_pda(dev); |
| 1367 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 1368 | |
| 1369 | hfa384x_disable_interrupts(dev); |
| 1370 | |
| 1371 | #ifndef final_version |
| 1372 | HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); |
| 1373 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { |
| 1374 | printk("SWSUPPORT0 write/read failed: %04X != %04X\n", |
| 1375 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); |
| 1376 | goto failed; |
| 1377 | } |
| 1378 | #endif |
| 1379 | |
| 1380 | if (initial || local->pri_only) { |
| 1381 | hfa384x_events_only_cmd(dev); |
| 1382 | /* get card version information */ |
| 1383 | if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || |
| 1384 | prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { |
| 1385 | hfa384x_disable_interrupts(dev); |
| 1386 | goto failed; |
| 1387 | } |
| 1388 | |
| 1389 | if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { |
| 1390 | printk(KERN_DEBUG "%s: Failed to read STA f/w version " |
| 1391 | "- only Primary f/w present\n", dev->name); |
| 1392 | local->pri_only = 1; |
| 1393 | return 0; |
| 1394 | } |
| 1395 | local->pri_only = 0; |
| 1396 | hfa384x_disable_interrupts(dev); |
| 1397 | } |
| 1398 | |
| 1399 | /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and |
| 1400 | * enable interrupts before this. This would also require some sort of |
| 1401 | * sleeping AllocEv waiting */ |
| 1402 | |
| 1403 | /* allocate TX FIDs */ |
| 1404 | local->txfid_len = PRISM2_TXFID_LEN; |
| 1405 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) { |
| 1406 | local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); |
| 1407 | if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { |
| 1408 | local->txfid[i] = hfa384x_allocate_fid(dev, 1600); |
| 1409 | if (local->txfid[i] != 0xffff) { |
| 1410 | printk(KERN_DEBUG "%s: Using shorter TX FID " |
| 1411 | "(1600 bytes)\n", dev->name); |
| 1412 | local->txfid_len = 1600; |
| 1413 | } |
| 1414 | } |
| 1415 | if (local->txfid[i] == 0xffff) |
| 1416 | goto failed; |
| 1417 | local->intransmitfid[i] = PRISM2_TXFID_EMPTY; |
| 1418 | } |
| 1419 | |
| 1420 | hfa384x_events_only_cmd(dev); |
| 1421 | |
| 1422 | if (initial) { |
| 1423 | struct list_head *ptr; |
| 1424 | prism2_check_sta_fw_version(local); |
| 1425 | |
| 1426 | if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, |
| 1427 | &dev->dev_addr, 6, 1) < 0) { |
| 1428 | printk("%s: could not get own MAC address\n", |
| 1429 | dev->name); |
| 1430 | } |
| 1431 | list_for_each(ptr, &local->hostap_interfaces) { |
| 1432 | iface = list_entry(ptr, struct hostap_interface, list); |
| 1433 | memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN); |
| 1434 | } |
| 1435 | } else if (local->fw_ap) |
| 1436 | prism2_check_sta_fw_version(local); |
| 1437 | |
| 1438 | prism2_setup_rids(dev); |
| 1439 | |
| 1440 | /* MAC is now configured, but port 0 is not yet enabled */ |
| 1441 | return 0; |
| 1442 | |
| 1443 | failed: |
| 1444 | if (!local->no_pri) |
| 1445 | printk(KERN_WARNING "%s: Initialization failed\n", dev_info); |
| 1446 | return 1; |
| 1447 | } |
| 1448 | |
| 1449 | |
| 1450 | static int prism2_hw_enable(struct net_device *dev, int initial) |
| 1451 | { |
| 1452 | struct hostap_interface *iface; |
| 1453 | local_info_t *local; |
| 1454 | int was_resetting; |
| 1455 | |
| 1456 | iface = netdev_priv(dev); |
| 1457 | local = iface->local; |
| 1458 | was_resetting = local->hw_resetting; |
| 1459 | |
| 1460 | if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { |
| 1461 | printk("%s: MAC port 0 enabling failed\n", dev->name); |
| 1462 | return 1; |
| 1463 | } |
| 1464 | |
| 1465 | local->hw_ready = 1; |
| 1466 | local->hw_reset_tries = 0; |
| 1467 | local->hw_resetting = 0; |
| 1468 | hfa384x_enable_interrupts(dev); |
| 1469 | |
| 1470 | /* at least D-Link DWL-650 seems to require additional port reset |
| 1471 | * before it starts acting as an AP, so reset port automatically |
| 1472 | * here just in case */ |
| 1473 | if (initial && prism2_reset_port(dev)) { |
| 1474 | printk("%s: MAC port 0 reseting failed\n", dev->name); |
| 1475 | return 1; |
| 1476 | } |
| 1477 | |
| 1478 | if (was_resetting && netif_queue_stopped(dev)) { |
| 1479 | /* If hw_reset() was called during pending transmit, netif |
| 1480 | * queue was stopped. Wake it up now since the wlan card has |
| 1481 | * been resetted. */ |
| 1482 | netif_wake_queue(dev); |
| 1483 | } |
| 1484 | |
| 1485 | return 0; |
| 1486 | } |
| 1487 | |
| 1488 | |
| 1489 | static int prism2_hw_config(struct net_device *dev, int initial) |
| 1490 | { |
| 1491 | struct hostap_interface *iface; |
| 1492 | local_info_t *local; |
| 1493 | |
| 1494 | iface = netdev_priv(dev); |
| 1495 | local = iface->local; |
| 1496 | |
| 1497 | if (local->hw_downloading) |
| 1498 | return 1; |
| 1499 | |
| 1500 | if (prism2_hw_init(dev, initial)) { |
| 1501 | return local->no_pri ? 0 : 1; |
| 1502 | } |
| 1503 | |
| 1504 | if (prism2_hw_init2(dev, initial)) |
| 1505 | return 1; |
| 1506 | |
| 1507 | /* Enable firmware if secondary image is loaded and at least one of the |
| 1508 | * netdevices is up. */ |
| 1509 | if (!local->pri_only && |
| 1510 | (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { |
| 1511 | if (!local->dev_enabled) |
| 1512 | prism2_callback(local, PRISM2_CALLBACK_ENABLE); |
| 1513 | local->dev_enabled = 1; |
| 1514 | return prism2_hw_enable(dev, initial); |
| 1515 | } |
| 1516 | |
| 1517 | return 0; |
| 1518 | } |
| 1519 | |
| 1520 | |
| 1521 | static void prism2_hw_shutdown(struct net_device *dev, int no_disable) |
| 1522 | { |
| 1523 | struct hostap_interface *iface; |
| 1524 | local_info_t *local; |
| 1525 | |
| 1526 | iface = netdev_priv(dev); |
| 1527 | local = iface->local; |
| 1528 | |
| 1529 | /* Allow only command completion events during disable */ |
| 1530 | hfa384x_events_only_cmd(dev); |
| 1531 | |
| 1532 | local->hw_ready = 0; |
| 1533 | if (local->dev_enabled) |
| 1534 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); |
| 1535 | local->dev_enabled = 0; |
| 1536 | |
| 1537 | if (local->func->card_present && !local->func->card_present(local)) { |
| 1538 | printk(KERN_DEBUG "%s: card already removed or not configured " |
| 1539 | "during shutdown\n", dev->name); |
| 1540 | return; |
| 1541 | } |
| 1542 | |
| 1543 | if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && |
| 1544 | hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) |
| 1545 | printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); |
| 1546 | |
| 1547 | hfa384x_disable_interrupts(dev); |
| 1548 | |
| 1549 | if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) |
| 1550 | hfa384x_events_only_cmd(dev); |
| 1551 | else |
| 1552 | prism2_clear_cmd_queue(local); |
| 1553 | } |
| 1554 | |
| 1555 | |
| 1556 | static void prism2_hw_reset(struct net_device *dev) |
| 1557 | { |
| 1558 | struct hostap_interface *iface; |
| 1559 | local_info_t *local; |
| 1560 | |
| 1561 | #if 0 |
| 1562 | static long last_reset = 0; |
| 1563 | |
| 1564 | /* do not reset card more than once per second to avoid ending up in a |
| 1565 | * busy loop reseting the card */ |
| 1566 | if (time_before_eq(jiffies, last_reset + HZ)) |
| 1567 | return; |
| 1568 | last_reset = jiffies; |
| 1569 | #endif |
| 1570 | |
| 1571 | iface = netdev_priv(dev); |
| 1572 | local = iface->local; |
| 1573 | |
| 1574 | if (in_interrupt()) { |
| 1575 | printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " |
| 1576 | "in interrupt context\n", dev->name); |
| 1577 | return; |
| 1578 | } |
| 1579 | |
| 1580 | if (local->hw_downloading) |
| 1581 | return; |
| 1582 | |
| 1583 | if (local->hw_resetting) { |
| 1584 | printk(KERN_WARNING "%s: %s: already resetting card - " |
| 1585 | "ignoring reset request\n", dev_info, dev->name); |
| 1586 | return; |
| 1587 | } |
| 1588 | |
| 1589 | local->hw_reset_tries++; |
| 1590 | if (local->hw_reset_tries > 10) { |
| 1591 | printk(KERN_WARNING "%s: too many reset tries, skipping\n", |
| 1592 | dev->name); |
| 1593 | return; |
| 1594 | } |
| 1595 | |
| 1596 | printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); |
| 1597 | hfa384x_disable_interrupts(dev); |
| 1598 | local->hw_resetting = 1; |
| 1599 | if (local->func->cor_sreset) { |
| 1600 | /* Host system seems to hang in some cases with high traffic |
| 1601 | * load or shared interrupts during COR sreset. Disable shared |
| 1602 | * interrupts during reset to avoid these crashes. COS sreset |
| 1603 | * takes quite a long time, so it is unfortunate that this |
| 1604 | * seems to be needed. Anyway, I do not know of any better way |
| 1605 | * of avoiding the crash. */ |
| 1606 | disable_irq(dev->irq); |
| 1607 | local->func->cor_sreset(local); |
| 1608 | enable_irq(dev->irq); |
| 1609 | } |
| 1610 | prism2_hw_shutdown(dev, 1); |
| 1611 | prism2_hw_config(dev, 0); |
| 1612 | local->hw_resetting = 0; |
| 1613 | |
| 1614 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 1615 | if (local->dl_pri) { |
| 1616 | printk(KERN_DEBUG "%s: persistent download of primary " |
| 1617 | "firmware\n", dev->name); |
| 1618 | if (prism2_download_genesis(local, local->dl_pri) < 0) |
| 1619 | printk(KERN_WARNING "%s: download (PRI) failed\n", |
| 1620 | dev->name); |
| 1621 | } |
| 1622 | |
| 1623 | if (local->dl_sec) { |
| 1624 | printk(KERN_DEBUG "%s: persistent download of secondary " |
| 1625 | "firmware\n", dev->name); |
| 1626 | if (prism2_download_volatile(local, local->dl_sec) < 0) |
| 1627 | printk(KERN_WARNING "%s: download (SEC) failed\n", |
| 1628 | dev->name); |
| 1629 | } |
| 1630 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 1631 | |
| 1632 | /* TODO: restore beacon TIM bits for STAs that have buffered frames */ |
| 1633 | } |
| 1634 | |
| 1635 | |
| 1636 | static void prism2_schedule_reset(local_info_t *local) |
| 1637 | { |
| 1638 | schedule_work(&local->reset_queue); |
| 1639 | } |
| 1640 | |
| 1641 | |
| 1642 | /* Called only as scheduled task after noticing card timeout in interrupt |
| 1643 | * context */ |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1644 | static void handle_reset_queue(struct work_struct *work) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1645 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1646 | local_info_t *local = container_of(work, local_info_t, reset_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1647 | |
| 1648 | printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); |
| 1649 | prism2_hw_reset(local->dev); |
| 1650 | |
| 1651 | if (netif_queue_stopped(local->dev)) { |
| 1652 | int i; |
| 1653 | |
| 1654 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) |
| 1655 | if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { |
| 1656 | PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " |
| 1657 | "wake up queue\n"); |
| 1658 | netif_wake_queue(local->dev); |
| 1659 | break; |
| 1660 | } |
| 1661 | } |
| 1662 | } |
| 1663 | |
| 1664 | |
| 1665 | static int prism2_get_txfid_idx(local_info_t *local) |
| 1666 | { |
| 1667 | int idx, end; |
| 1668 | unsigned long flags; |
| 1669 | |
| 1670 | spin_lock_irqsave(&local->txfidlock, flags); |
| 1671 | end = idx = local->next_txfid; |
| 1672 | do { |
| 1673 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { |
| 1674 | local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; |
| 1675 | spin_unlock_irqrestore(&local->txfidlock, flags); |
| 1676 | return idx; |
| 1677 | } |
| 1678 | idx++; |
| 1679 | if (idx >= PRISM2_TXFID_COUNT) |
| 1680 | idx = 0; |
| 1681 | } while (idx != end); |
| 1682 | spin_unlock_irqrestore(&local->txfidlock, flags); |
| 1683 | |
| 1684 | PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " |
| 1685 | "packet dropped\n"); |
| 1686 | local->stats.tx_dropped++; |
| 1687 | |
| 1688 | return -1; |
| 1689 | } |
| 1690 | |
| 1691 | |
| 1692 | /* Called only from hardware IRQ */ |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 1693 | static void prism2_transmit_cb(struct net_device *dev, long context, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1694 | u16 resp0, u16 res) |
| 1695 | { |
| 1696 | struct hostap_interface *iface; |
| 1697 | local_info_t *local; |
| 1698 | int idx = (int) context; |
| 1699 | |
| 1700 | iface = netdev_priv(dev); |
| 1701 | local = iface->local; |
| 1702 | |
| 1703 | if (res) { |
| 1704 | printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", |
| 1705 | dev->name, res); |
| 1706 | return; |
| 1707 | } |
| 1708 | |
| 1709 | if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { |
| 1710 | printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " |
| 1711 | "idx=%d\n", dev->name, idx); |
| 1712 | return; |
| 1713 | } |
| 1714 | |
| 1715 | if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { |
| 1716 | printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " |
| 1717 | "with no pending transmit\n", dev->name); |
| 1718 | } |
| 1719 | |
| 1720 | if (netif_queue_stopped(dev)) { |
| 1721 | /* ready for next TX, so wake up queue that was stopped in |
| 1722 | * prism2_transmit() */ |
| 1723 | netif_wake_queue(dev); |
| 1724 | } |
| 1725 | |
| 1726 | spin_lock(&local->txfidlock); |
| 1727 | |
| 1728 | /* With reclaim, Resp0 contains new txfid for transmit; the old txfid |
| 1729 | * will be automatically allocated for the next TX frame */ |
| 1730 | local->intransmitfid[idx] = resp0; |
| 1731 | |
| 1732 | PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " |
| 1733 | "resp0=0x%04x, transmit_txfid=0x%04x\n", |
| 1734 | dev->name, idx, local->txfid[idx], |
| 1735 | resp0, local->intransmitfid[local->next_txfid]); |
| 1736 | |
| 1737 | idx++; |
| 1738 | if (idx >= PRISM2_TXFID_COUNT) |
| 1739 | idx = 0; |
| 1740 | local->next_txfid = idx; |
| 1741 | |
| 1742 | /* check if all TX buffers are occupied */ |
| 1743 | do { |
| 1744 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { |
| 1745 | spin_unlock(&local->txfidlock); |
| 1746 | return; |
| 1747 | } |
| 1748 | idx++; |
| 1749 | if (idx >= PRISM2_TXFID_COUNT) |
| 1750 | idx = 0; |
| 1751 | } while (idx != local->next_txfid); |
| 1752 | spin_unlock(&local->txfidlock); |
| 1753 | |
| 1754 | /* no empty TX buffers, stop queue */ |
| 1755 | netif_stop_queue(dev); |
| 1756 | } |
| 1757 | |
| 1758 | |
| 1759 | /* Called only from software IRQ if PCI bus master is not used (with bus master |
| 1760 | * this can be called both from software and hardware IRQ) */ |
| 1761 | static int prism2_transmit(struct net_device *dev, int idx) |
| 1762 | { |
| 1763 | struct hostap_interface *iface; |
| 1764 | local_info_t *local; |
| 1765 | int res; |
| 1766 | |
| 1767 | iface = netdev_priv(dev); |
| 1768 | local = iface->local; |
| 1769 | |
| 1770 | /* The driver tries to stop netif queue so that there would not be |
| 1771 | * more than one attempt to transmit frames going on; check that this |
| 1772 | * is really the case */ |
| 1773 | |
| 1774 | if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { |
| 1775 | printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " |
| 1776 | "when previous TX was pending\n", dev->name); |
| 1777 | return -1; |
| 1778 | } |
| 1779 | |
| 1780 | /* stop the queue for the time that transmit is pending */ |
| 1781 | netif_stop_queue(dev); |
| 1782 | |
| 1783 | /* transmit packet */ |
| 1784 | res = hfa384x_cmd_callback( |
| 1785 | dev, |
| 1786 | HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, |
| 1787 | local->txfid[idx], |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 1788 | prism2_transmit_cb, (long) idx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1789 | |
| 1790 | if (res) { |
| 1791 | struct net_device_stats *stats; |
| 1792 | printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " |
| 1793 | "failed (res=%d)\n", dev->name, res); |
| 1794 | stats = hostap_get_stats(dev); |
| 1795 | stats->tx_dropped++; |
| 1796 | netif_wake_queue(dev); |
| 1797 | return -1; |
| 1798 | } |
| 1799 | dev->trans_start = jiffies; |
| 1800 | |
| 1801 | /* Since we did not wait for command completion, the card continues |
| 1802 | * to process on the background and we will finish handling when |
| 1803 | * command completion event is handled (prism2_cmd_ev() function) */ |
| 1804 | |
| 1805 | return 0; |
| 1806 | } |
| 1807 | |
| 1808 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1809 | /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and |
| 1810 | * send the payload with this descriptor) */ |
| 1811 | /* Called only from software IRQ */ |
| 1812 | static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) |
| 1813 | { |
| 1814 | struct hostap_interface *iface; |
| 1815 | local_info_t *local; |
| 1816 | struct hfa384x_tx_frame txdesc; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1817 | struct hostap_skb_tx_data *meta; |
| 1818 | int hdr_len, data_len, idx, res, ret = -1; |
| 1819 | u16 tx_control, fc; |
| 1820 | |
| 1821 | iface = netdev_priv(dev); |
| 1822 | local = iface->local; |
| 1823 | |
| 1824 | meta = (struct hostap_skb_tx_data *) skb->cb; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1825 | |
| 1826 | prism2_callback(local, PRISM2_CALLBACK_TX_START); |
| 1827 | |
| 1828 | if ((local->func->card_present && !local->func->card_present(local)) || |
| 1829 | !local->hw_ready || local->hw_downloading || local->pri_only) { |
| 1830 | if (net_ratelimit()) { |
| 1831 | printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" |
| 1832 | " skipping\n", dev->name); |
| 1833 | } |
| 1834 | goto fail; |
| 1835 | } |
| 1836 | |
| 1837 | memset(&txdesc, 0, sizeof(txdesc)); |
| 1838 | |
| 1839 | /* skb->data starts with txdesc->frame_control */ |
| 1840 | hdr_len = 24; |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1841 | skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1842 | fc = le16_to_cpu(txdesc.frame_control); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1843 | if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA && |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 1844 | (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS) && |
| 1845 | skb->len >= 30) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1846 | /* Addr4 */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1847 | skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, |
| 1848 | ETH_ALEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1849 | hdr_len += ETH_ALEN; |
| 1850 | } |
| 1851 | |
| 1852 | tx_control = local->tx_control; |
| 1853 | if (meta->tx_cb_idx) { |
| 1854 | tx_control |= HFA384X_TX_CTRL_TX_OK; |
Al Viro | e0c0056 | 2007-12-21 03:42:01 -0500 | [diff] [blame] | 1855 | txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1856 | } |
| 1857 | txdesc.tx_control = cpu_to_le16(tx_control); |
| 1858 | txdesc.tx_rate = meta->rate; |
| 1859 | |
| 1860 | data_len = skb->len - hdr_len; |
| 1861 | txdesc.data_len = cpu_to_le16(data_len); |
| 1862 | txdesc.len = cpu_to_be16(data_len); |
| 1863 | |
| 1864 | idx = prism2_get_txfid_idx(local); |
| 1865 | if (idx < 0) |
| 1866 | goto fail; |
| 1867 | |
| 1868 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) |
| 1869 | hostap_dump_tx_header(dev->name, &txdesc); |
| 1870 | |
| 1871 | spin_lock(&local->baplock); |
| 1872 | res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); |
| 1873 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1874 | if (!res) |
| 1875 | res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); |
| 1876 | if (!res) |
| 1877 | res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, |
| 1878 | skb->len - hdr_len); |
| 1879 | spin_unlock(&local->baplock); |
| 1880 | |
| 1881 | if (!res) |
| 1882 | res = prism2_transmit(dev, idx); |
| 1883 | if (res) { |
| 1884 | printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", |
| 1885 | dev->name); |
| 1886 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; |
| 1887 | schedule_work(&local->reset_queue); |
| 1888 | goto fail; |
| 1889 | } |
| 1890 | |
| 1891 | ret = 0; |
| 1892 | |
| 1893 | fail: |
| 1894 | prism2_callback(local, PRISM2_CALLBACK_TX_END); |
| 1895 | return ret; |
| 1896 | } |
| 1897 | |
| 1898 | |
| 1899 | /* Some SMP systems have reported number of odd errors with hostap_pci. fid |
| 1900 | * register has changed values between consecutive reads for an unknown reason. |
| 1901 | * This should really not happen, so more debugging is needed. This test |
| 1902 | * version is a big slower, but it will detect most of such register changes |
| 1903 | * and will try to get the correct fid eventually. */ |
| 1904 | #define EXTRA_FID_READ_TESTS |
| 1905 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1906 | static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1907 | { |
| 1908 | #ifdef EXTRA_FID_READ_TESTS |
| 1909 | u16 val, val2, val3; |
| 1910 | int i; |
| 1911 | |
| 1912 | for (i = 0; i < 10; i++) { |
| 1913 | val = HFA384X_INW(reg); |
| 1914 | val2 = HFA384X_INW(reg); |
| 1915 | val3 = HFA384X_INW(reg); |
| 1916 | |
| 1917 | if (val == val2 && val == val3) |
| 1918 | return val; |
| 1919 | |
| 1920 | printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" |
| 1921 | " %04x %04x %04x\n", |
| 1922 | dev->name, i, reg, val, val2, val3); |
| 1923 | if ((val == val2 || val == val3) && val != 0) |
| 1924 | return val; |
| 1925 | if (val2 == val3 && val2 != 0) |
| 1926 | return val2; |
| 1927 | } |
| 1928 | printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " |
| 1929 | "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); |
| 1930 | return val; |
| 1931 | #else /* EXTRA_FID_READ_TESTS */ |
| 1932 | return HFA384X_INW(reg); |
| 1933 | #endif /* EXTRA_FID_READ_TESTS */ |
| 1934 | } |
| 1935 | |
| 1936 | |
| 1937 | /* Called only as a tasklet (software IRQ) */ |
| 1938 | static void prism2_rx(local_info_t *local) |
| 1939 | { |
| 1940 | struct net_device *dev = local->dev; |
| 1941 | int res, rx_pending = 0; |
| 1942 | u16 len, hdr_len, rxfid, status, macport; |
| 1943 | struct net_device_stats *stats; |
| 1944 | struct hfa384x_rx_frame rxdesc; |
| 1945 | struct sk_buff *skb = NULL; |
| 1946 | |
| 1947 | prism2_callback(local, PRISM2_CALLBACK_RX_START); |
| 1948 | stats = hostap_get_stats(dev); |
| 1949 | |
| 1950 | rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); |
| 1951 | #ifndef final_version |
| 1952 | if (rxfid == 0) { |
| 1953 | rxfid = HFA384X_INW(HFA384X_RXFID_OFF); |
| 1954 | printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", |
| 1955 | rxfid); |
| 1956 | if (rxfid == 0) { |
| 1957 | schedule_work(&local->reset_queue); |
| 1958 | goto rx_dropped; |
| 1959 | } |
| 1960 | /* try to continue with the new rxfid value */ |
| 1961 | } |
| 1962 | #endif |
| 1963 | |
| 1964 | spin_lock(&local->baplock); |
| 1965 | res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); |
| 1966 | if (!res) |
| 1967 | res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); |
| 1968 | |
| 1969 | if (res) { |
| 1970 | spin_unlock(&local->baplock); |
| 1971 | printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, |
| 1972 | res); |
| 1973 | if (res == -ETIMEDOUT) { |
| 1974 | schedule_work(&local->reset_queue); |
| 1975 | } |
| 1976 | goto rx_dropped; |
| 1977 | } |
| 1978 | |
| 1979 | len = le16_to_cpu(rxdesc.data_len); |
| 1980 | hdr_len = sizeof(rxdesc); |
| 1981 | status = le16_to_cpu(rxdesc.status); |
| 1982 | macport = (status >> 8) & 0x07; |
| 1983 | |
| 1984 | /* Drop frames with too large reported payload length. Monitor mode |
| 1985 | * seems to sometimes pass frames (e.g., ctrl::ack) with signed and |
| 1986 | * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for |
| 1987 | * macport 7 */ |
| 1988 | if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { |
| 1989 | if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { |
| 1990 | if (len >= (u16) -14) { |
| 1991 | hdr_len -= 65535 - len; |
| 1992 | hdr_len--; |
| 1993 | } |
| 1994 | len = 0; |
| 1995 | } else { |
| 1996 | spin_unlock(&local->baplock); |
| 1997 | printk(KERN_DEBUG "%s: Received frame with invalid " |
| 1998 | "length 0x%04x\n", dev->name, len); |
| 1999 | hostap_dump_rx_header(dev->name, &rxdesc); |
| 2000 | goto rx_dropped; |
| 2001 | } |
| 2002 | } |
| 2003 | |
| 2004 | skb = dev_alloc_skb(len + hdr_len); |
| 2005 | if (!skb) { |
| 2006 | spin_unlock(&local->baplock); |
| 2007 | printk(KERN_DEBUG "%s: RX failed to allocate skb\n", |
| 2008 | dev->name); |
| 2009 | goto rx_dropped; |
| 2010 | } |
| 2011 | skb->dev = dev; |
| 2012 | memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len); |
| 2013 | |
Jouni Malinen | ea3f186 | 2005-08-14 19:08:40 -0700 | [diff] [blame] | 2014 | if (len > 0) |
| 2015 | res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); |
| 2016 | spin_unlock(&local->baplock); |
| 2017 | if (res) { |
| 2018 | printk(KERN_DEBUG "%s: RX failed to read " |
| 2019 | "frame data\n", dev->name); |
| 2020 | goto rx_dropped; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2021 | } |
| 2022 | |
Jouni Malinen | ea3f186 | 2005-08-14 19:08:40 -0700 | [diff] [blame] | 2023 | skb_queue_tail(&local->rx_list, skb); |
| 2024 | tasklet_schedule(&local->rx_tasklet); |
| 2025 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2026 | rx_exit: |
| 2027 | prism2_callback(local, PRISM2_CALLBACK_RX_END); |
| 2028 | if (!rx_pending) { |
| 2029 | HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); |
| 2030 | } |
| 2031 | |
| 2032 | return; |
| 2033 | |
| 2034 | rx_dropped: |
| 2035 | stats->rx_dropped++; |
| 2036 | if (skb) |
| 2037 | dev_kfree_skb(skb); |
| 2038 | goto rx_exit; |
| 2039 | } |
| 2040 | |
| 2041 | |
| 2042 | /* Called only as a tasklet (software IRQ) */ |
| 2043 | static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) |
| 2044 | { |
| 2045 | struct hfa384x_rx_frame *rxdesc; |
| 2046 | struct net_device *dev = skb->dev; |
| 2047 | struct hostap_80211_rx_status stats; |
| 2048 | int hdrlen, rx_hdrlen; |
| 2049 | |
| 2050 | rx_hdrlen = sizeof(*rxdesc); |
| 2051 | if (skb->len < sizeof(*rxdesc)) { |
| 2052 | /* Allow monitor mode to receive shorter frames */ |
| 2053 | if (local->iw_mode == IW_MODE_MONITOR && |
| 2054 | skb->len >= sizeof(*rxdesc) - 30) { |
| 2055 | rx_hdrlen = skb->len; |
| 2056 | } else { |
| 2057 | dev_kfree_skb(skb); |
| 2058 | return; |
| 2059 | } |
| 2060 | } |
| 2061 | |
| 2062 | rxdesc = (struct hfa384x_rx_frame *) skb->data; |
| 2063 | |
| 2064 | if (local->frame_dump & PRISM2_DUMP_RX_HDR && |
| 2065 | skb->len >= sizeof(*rxdesc)) |
| 2066 | hostap_dump_rx_header(dev->name, rxdesc); |
| 2067 | |
| 2068 | if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && |
| 2069 | (!local->monitor_allow_fcserr || |
| 2070 | local->iw_mode != IW_MODE_MONITOR)) |
| 2071 | goto drop; |
| 2072 | |
| 2073 | if (skb->len > PRISM2_DATA_MAXLEN) { |
| 2074 | printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", |
| 2075 | dev->name, skb->len, PRISM2_DATA_MAXLEN); |
| 2076 | goto drop; |
| 2077 | } |
| 2078 | |
| 2079 | stats.mac_time = le32_to_cpu(rxdesc->time); |
| 2080 | stats.signal = rxdesc->signal - local->rssi_to_dBm; |
| 2081 | stats.noise = rxdesc->silence - local->rssi_to_dBm; |
| 2082 | stats.rate = rxdesc->rate; |
| 2083 | |
| 2084 | /* Convert Prism2 RX structure into IEEE 802.11 header */ |
| 2085 | hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(rxdesc->frame_control)); |
| 2086 | if (hdrlen > rx_hdrlen) |
| 2087 | hdrlen = rx_hdrlen; |
| 2088 | |
| 2089 | memmove(skb_pull(skb, rx_hdrlen - hdrlen), |
| 2090 | &rxdesc->frame_control, hdrlen); |
| 2091 | |
| 2092 | hostap_80211_rx(dev, skb, &stats); |
| 2093 | return; |
| 2094 | |
| 2095 | drop: |
| 2096 | dev_kfree_skb(skb); |
| 2097 | } |
| 2098 | |
| 2099 | |
| 2100 | /* Called only as a tasklet (software IRQ) */ |
| 2101 | static void hostap_rx_tasklet(unsigned long data) |
| 2102 | { |
| 2103 | local_info_t *local = (local_info_t *) data; |
| 2104 | struct sk_buff *skb; |
| 2105 | |
| 2106 | while ((skb = skb_dequeue(&local->rx_list)) != NULL) |
| 2107 | hostap_rx_skb(local, skb); |
| 2108 | } |
| 2109 | |
| 2110 | |
| 2111 | /* Called only from hardware IRQ */ |
| 2112 | static void prism2_alloc_ev(struct net_device *dev) |
| 2113 | { |
| 2114 | struct hostap_interface *iface; |
| 2115 | local_info_t *local; |
| 2116 | int idx; |
| 2117 | u16 fid; |
| 2118 | |
| 2119 | iface = netdev_priv(dev); |
| 2120 | local = iface->local; |
| 2121 | |
| 2122 | fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); |
| 2123 | |
| 2124 | PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); |
| 2125 | |
| 2126 | spin_lock(&local->txfidlock); |
| 2127 | idx = local->next_alloc; |
| 2128 | |
| 2129 | do { |
| 2130 | if (local->txfid[idx] == fid) { |
| 2131 | PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", |
| 2132 | idx); |
| 2133 | |
| 2134 | #ifndef final_version |
| 2135 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) |
| 2136 | printk("Already released txfid found at idx " |
| 2137 | "%d\n", idx); |
| 2138 | if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) |
| 2139 | printk("Already reserved txfid found at idx " |
| 2140 | "%d\n", idx); |
| 2141 | #endif |
| 2142 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; |
| 2143 | idx++; |
| 2144 | local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : |
| 2145 | idx; |
| 2146 | |
| 2147 | if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && |
| 2148 | netif_queue_stopped(dev)) |
| 2149 | netif_wake_queue(dev); |
| 2150 | |
| 2151 | spin_unlock(&local->txfidlock); |
| 2152 | return; |
| 2153 | } |
| 2154 | |
| 2155 | idx++; |
| 2156 | if (idx >= PRISM2_TXFID_COUNT) |
| 2157 | idx = 0; |
| 2158 | } while (idx != local->next_alloc); |
| 2159 | |
| 2160 | printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " |
| 2161 | "read 0x%04x) for alloc event\n", dev->name, fid, |
| 2162 | HFA384X_INW(HFA384X_ALLOCFID_OFF)); |
| 2163 | printk(KERN_DEBUG "TXFIDs:"); |
| 2164 | for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) |
| 2165 | printk(" %04x[%04x]", local->txfid[idx], |
| 2166 | local->intransmitfid[idx]); |
| 2167 | printk("\n"); |
| 2168 | spin_unlock(&local->txfidlock); |
| 2169 | |
| 2170 | /* FIX: should probably schedule reset; reference to one txfid was lost |
| 2171 | * completely.. Bad things will happen if we run out of txfids |
| 2172 | * Actually, this will cause netdev watchdog to notice TX timeout and |
| 2173 | * then card reset after all txfids have been leaked. */ |
| 2174 | } |
| 2175 | |
| 2176 | |
| 2177 | /* Called only as a tasklet (software IRQ) */ |
| 2178 | static void hostap_tx_callback(local_info_t *local, |
| 2179 | struct hfa384x_tx_frame *txdesc, int ok, |
| 2180 | char *payload) |
| 2181 | { |
| 2182 | u16 sw_support, hdrlen, len; |
| 2183 | struct sk_buff *skb; |
| 2184 | struct hostap_tx_callback_info *cb; |
| 2185 | |
| 2186 | /* Make sure that frame was from us. */ |
| 2187 | if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) { |
| 2188 | printk(KERN_DEBUG "%s: TX callback - foreign frame\n", |
| 2189 | local->dev->name); |
| 2190 | return; |
| 2191 | } |
| 2192 | |
Al Viro | e0c0056 | 2007-12-21 03:42:01 -0500 | [diff] [blame] | 2193 | sw_support = le32_to_cpu(txdesc->sw_support); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2194 | |
| 2195 | spin_lock(&local->lock); |
| 2196 | cb = local->tx_callback; |
| 2197 | while (cb != NULL && cb->idx != sw_support) |
| 2198 | cb = cb->next; |
| 2199 | spin_unlock(&local->lock); |
| 2200 | |
| 2201 | if (cb == NULL) { |
| 2202 | printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", |
| 2203 | local->dev->name, sw_support); |
| 2204 | return; |
| 2205 | } |
| 2206 | |
| 2207 | hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(txdesc->frame_control)); |
| 2208 | len = le16_to_cpu(txdesc->data_len); |
| 2209 | skb = dev_alloc_skb(hdrlen + len); |
| 2210 | if (skb == NULL) { |
| 2211 | printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " |
| 2212 | "skb\n", local->dev->name); |
| 2213 | return; |
| 2214 | } |
| 2215 | |
| 2216 | memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen); |
| 2217 | if (payload) |
| 2218 | memcpy(skb_put(skb, len), payload, len); |
| 2219 | |
| 2220 | skb->dev = local->dev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 2221 | skb_reset_mac_header(skb); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2222 | |
| 2223 | cb->func(skb, ok, cb->data); |
| 2224 | } |
| 2225 | |
| 2226 | |
| 2227 | /* Called only as a tasklet (software IRQ) */ |
| 2228 | static int hostap_tx_compl_read(local_info_t *local, int error, |
| 2229 | struct hfa384x_tx_frame *txdesc, |
| 2230 | char **payload) |
| 2231 | { |
| 2232 | u16 fid, len; |
| 2233 | int res, ret = 0; |
| 2234 | struct net_device *dev = local->dev; |
| 2235 | |
| 2236 | fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); |
| 2237 | |
| 2238 | PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); |
| 2239 | |
| 2240 | spin_lock(&local->baplock); |
| 2241 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); |
| 2242 | if (!res) |
| 2243 | res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); |
| 2244 | if (res) { |
| 2245 | PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " |
| 2246 | "read txdesc\n", dev->name, error, fid); |
| 2247 | if (res == -ETIMEDOUT) { |
| 2248 | schedule_work(&local->reset_queue); |
| 2249 | } |
| 2250 | ret = -1; |
| 2251 | goto fail; |
| 2252 | } |
| 2253 | if (txdesc->sw_support) { |
| 2254 | len = le16_to_cpu(txdesc->data_len); |
| 2255 | if (len < PRISM2_DATA_MAXLEN) { |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 2256 | *payload = kmalloc(len, GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2257 | if (*payload == NULL || |
| 2258 | hfa384x_from_bap(dev, BAP0, *payload, len)) { |
| 2259 | PDEBUG(DEBUG_EXTRA, "%s: could not read TX " |
| 2260 | "frame payload\n", dev->name); |
| 2261 | kfree(*payload); |
| 2262 | *payload = NULL; |
| 2263 | ret = -1; |
| 2264 | goto fail; |
| 2265 | } |
| 2266 | } |
| 2267 | } |
| 2268 | |
| 2269 | fail: |
| 2270 | spin_unlock(&local->baplock); |
| 2271 | |
| 2272 | return ret; |
| 2273 | } |
| 2274 | |
| 2275 | |
| 2276 | /* Called only as a tasklet (software IRQ) */ |
| 2277 | static void prism2_tx_ev(local_info_t *local) |
| 2278 | { |
| 2279 | struct net_device *dev = local->dev; |
| 2280 | char *payload = NULL; |
| 2281 | struct hfa384x_tx_frame txdesc; |
| 2282 | |
| 2283 | if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) |
| 2284 | goto fail; |
| 2285 | |
| 2286 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) { |
| 2287 | PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " |
| 2288 | "retry_count=%d tx_rate=%d seq_ctrl=%d " |
| 2289 | "duration_id=%d\n", |
| 2290 | dev->name, le16_to_cpu(txdesc.status), |
| 2291 | txdesc.retry_count, txdesc.tx_rate, |
| 2292 | le16_to_cpu(txdesc.seq_ctrl), |
| 2293 | le16_to_cpu(txdesc.duration_id)); |
| 2294 | } |
| 2295 | |
| 2296 | if (txdesc.sw_support) |
| 2297 | hostap_tx_callback(local, &txdesc, 1, payload); |
| 2298 | kfree(payload); |
| 2299 | |
| 2300 | fail: |
| 2301 | HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); |
| 2302 | } |
| 2303 | |
| 2304 | |
| 2305 | /* Called only as a tasklet (software IRQ) */ |
| 2306 | static void hostap_sta_tx_exc_tasklet(unsigned long data) |
| 2307 | { |
| 2308 | local_info_t *local = (local_info_t *) data; |
| 2309 | struct sk_buff *skb; |
| 2310 | |
| 2311 | while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { |
| 2312 | struct hfa384x_tx_frame *txdesc = |
| 2313 | (struct hfa384x_tx_frame *) skb->data; |
| 2314 | |
| 2315 | if (skb->len >= sizeof(*txdesc)) { |
| 2316 | /* Convert Prism2 RX structure into IEEE 802.11 header |
| 2317 | */ |
| 2318 | u16 fc = le16_to_cpu(txdesc->frame_control); |
| 2319 | int hdrlen = hostap_80211_get_hdrlen(fc); |
| 2320 | memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), |
| 2321 | &txdesc->frame_control, hdrlen); |
| 2322 | |
| 2323 | hostap_handle_sta_tx_exc(local, skb); |
| 2324 | } |
| 2325 | dev_kfree_skb(skb); |
| 2326 | } |
| 2327 | } |
| 2328 | |
| 2329 | |
| 2330 | /* Called only as a tasklet (software IRQ) */ |
| 2331 | static void prism2_txexc(local_info_t *local) |
| 2332 | { |
| 2333 | struct net_device *dev = local->dev; |
| 2334 | u16 status, fc; |
| 2335 | int show_dump, res; |
| 2336 | char *payload = NULL; |
| 2337 | struct hfa384x_tx_frame txdesc; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2338 | DECLARE_MAC_BUF(mac); |
| 2339 | DECLARE_MAC_BUF(mac2); |
| 2340 | DECLARE_MAC_BUF(mac3); |
| 2341 | DECLARE_MAC_BUF(mac4); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2342 | |
| 2343 | show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; |
| 2344 | local->stats.tx_errors++; |
| 2345 | |
| 2346 | res = hostap_tx_compl_read(local, 1, &txdesc, &payload); |
| 2347 | HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); |
| 2348 | if (res) |
| 2349 | return; |
| 2350 | |
| 2351 | status = le16_to_cpu(txdesc.status); |
| 2352 | |
| 2353 | /* We produce a TXDROP event only for retry or lifetime |
| 2354 | * exceeded, because that's the only status that really mean |
| 2355 | * that this particular node went away. |
| 2356 | * Other errors means that *we* screwed up. - Jean II */ |
| 2357 | if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) |
| 2358 | { |
| 2359 | union iwreq_data wrqu; |
| 2360 | |
| 2361 | /* Copy 802.11 dest address. */ |
| 2362 | memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); |
| 2363 | wrqu.addr.sa_family = ARPHRD_ETHER; |
| 2364 | wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); |
| 2365 | } else |
| 2366 | show_dump = 1; |
| 2367 | |
| 2368 | if (local->iw_mode == IW_MODE_MASTER || |
| 2369 | local->iw_mode == IW_MODE_REPEAT || |
| 2370 | local->wds_type & HOSTAP_WDS_AP_CLIENT) { |
| 2371 | struct sk_buff *skb; |
| 2372 | skb = dev_alloc_skb(sizeof(txdesc)); |
| 2373 | if (skb) { |
| 2374 | memcpy(skb_put(skb, sizeof(txdesc)), &txdesc, |
| 2375 | sizeof(txdesc)); |
| 2376 | skb_queue_tail(&local->sta_tx_exc_list, skb); |
| 2377 | tasklet_schedule(&local->sta_tx_exc_tasklet); |
| 2378 | } |
| 2379 | } |
| 2380 | |
| 2381 | if (txdesc.sw_support) |
| 2382 | hostap_tx_callback(local, &txdesc, 0, payload); |
| 2383 | kfree(payload); |
| 2384 | |
| 2385 | if (!show_dump) |
| 2386 | return; |
| 2387 | |
| 2388 | PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" |
| 2389 | " tx_control=%04x\n", |
| 2390 | dev->name, status, |
| 2391 | status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", |
| 2392 | status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", |
| 2393 | status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", |
| 2394 | status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", |
| 2395 | le16_to_cpu(txdesc.tx_control)); |
| 2396 | |
| 2397 | fc = le16_to_cpu(txdesc.frame_control); |
| 2398 | PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " |
| 2399 | "(%s%s%s::%d%s%s)\n", |
| 2400 | txdesc.retry_count, txdesc.tx_rate, fc, |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2401 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT ? "Mgmt" : "", |
| 2402 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL ? "Ctrl" : "", |
| 2403 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA ? "Data" : "", |
| 2404 | WLAN_FC_GET_STYPE(fc) >> 4, |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 2405 | fc & IEEE80211_FCTL_TODS ? " ToDS" : "", |
| 2406 | fc & IEEE80211_FCTL_FROMDS ? " FromDS" : ""); |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2407 | PDEBUG(DEBUG_EXTRA, " A1=%s A2=%s A3=%s A4=%s\n", |
| 2408 | print_mac(mac, txdesc.addr1), print_mac(mac2, txdesc.addr2), |
| 2409 | print_mac(mac3, txdesc.addr3), print_mac(mac4, txdesc.addr4)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2410 | } |
| 2411 | |
| 2412 | |
| 2413 | /* Called only as a tasklet (software IRQ) */ |
| 2414 | static void hostap_info_tasklet(unsigned long data) |
| 2415 | { |
| 2416 | local_info_t *local = (local_info_t *) data; |
| 2417 | struct sk_buff *skb; |
| 2418 | |
| 2419 | while ((skb = skb_dequeue(&local->info_list)) != NULL) { |
| 2420 | hostap_info_process(local, skb); |
| 2421 | dev_kfree_skb(skb); |
| 2422 | } |
| 2423 | } |
| 2424 | |
| 2425 | |
| 2426 | /* Called only as a tasklet (software IRQ) */ |
| 2427 | static void prism2_info(local_info_t *local) |
| 2428 | { |
| 2429 | struct net_device *dev = local->dev; |
| 2430 | u16 fid; |
| 2431 | int res, left; |
| 2432 | struct hfa384x_info_frame info; |
| 2433 | struct sk_buff *skb; |
| 2434 | |
| 2435 | fid = HFA384X_INW(HFA384X_INFOFID_OFF); |
| 2436 | |
| 2437 | spin_lock(&local->baplock); |
| 2438 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); |
| 2439 | if (!res) |
| 2440 | res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); |
| 2441 | if (res) { |
| 2442 | spin_unlock(&local->baplock); |
| 2443 | printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", |
| 2444 | fid); |
| 2445 | if (res == -ETIMEDOUT) { |
| 2446 | schedule_work(&local->reset_queue); |
| 2447 | } |
| 2448 | goto out; |
| 2449 | } |
| 2450 | |
Al Viro | 184a3b2 | 2007-12-21 03:40:35 -0500 | [diff] [blame] | 2451 | left = (le16_to_cpu(info.len) - 1) * 2; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2452 | |
Al Viro | 184a3b2 | 2007-12-21 03:40:35 -0500 | [diff] [blame] | 2453 | if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2454 | /* data register seems to give 0x8000 in some error cases even |
| 2455 | * though busy bit is not set in offset register; |
| 2456 | * in addition, length must be at least 1 due to type field */ |
| 2457 | spin_unlock(&local->baplock); |
| 2458 | printk(KERN_DEBUG "%s: Received info frame with invalid " |
Al Viro | 184a3b2 | 2007-12-21 03:40:35 -0500 | [diff] [blame] | 2459 | "length 0x%04x (type 0x%04x)\n", dev->name, |
| 2460 | le16_to_cpu(info.len), le16_to_cpu(info.type)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2461 | goto out; |
| 2462 | } |
| 2463 | |
| 2464 | skb = dev_alloc_skb(sizeof(info) + left); |
| 2465 | if (skb == NULL) { |
| 2466 | spin_unlock(&local->baplock); |
| 2467 | printk(KERN_DEBUG "%s: Could not allocate skb for info " |
| 2468 | "frame\n", dev->name); |
| 2469 | goto out; |
| 2470 | } |
| 2471 | |
| 2472 | memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info)); |
| 2473 | if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) |
| 2474 | { |
| 2475 | spin_unlock(&local->baplock); |
| 2476 | printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " |
Al Viro | 184a3b2 | 2007-12-21 03:40:35 -0500 | [diff] [blame] | 2477 | "len=0x%04x, type=0x%04x\n", dev->name, fid, |
| 2478 | le16_to_cpu(info.len), le16_to_cpu(info.type)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2479 | dev_kfree_skb(skb); |
| 2480 | goto out; |
| 2481 | } |
| 2482 | spin_unlock(&local->baplock); |
| 2483 | |
| 2484 | skb_queue_tail(&local->info_list, skb); |
| 2485 | tasklet_schedule(&local->info_tasklet); |
| 2486 | |
| 2487 | out: |
| 2488 | HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); |
| 2489 | } |
| 2490 | |
| 2491 | |
| 2492 | /* Called only as a tasklet (software IRQ) */ |
| 2493 | static void hostap_bap_tasklet(unsigned long data) |
| 2494 | { |
| 2495 | local_info_t *local = (local_info_t *) data; |
| 2496 | struct net_device *dev = local->dev; |
| 2497 | u16 ev; |
| 2498 | int frames = 30; |
| 2499 | |
| 2500 | if (local->func->card_present && !local->func->card_present(local)) |
| 2501 | return; |
| 2502 | |
| 2503 | set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); |
| 2504 | |
| 2505 | /* Process all pending BAP events without generating new interrupts |
| 2506 | * for them */ |
| 2507 | while (frames-- > 0) { |
| 2508 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 2509 | if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) |
| 2510 | break; |
| 2511 | if (ev & HFA384X_EV_RX) |
| 2512 | prism2_rx(local); |
| 2513 | if (ev & HFA384X_EV_INFO) |
| 2514 | prism2_info(local); |
| 2515 | if (ev & HFA384X_EV_TX) |
| 2516 | prism2_tx_ev(local); |
| 2517 | if (ev & HFA384X_EV_TXEXC) |
| 2518 | prism2_txexc(local); |
| 2519 | } |
| 2520 | |
| 2521 | set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); |
| 2522 | clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); |
| 2523 | |
| 2524 | /* Enable interrupts for new BAP events */ |
| 2525 | hfa384x_events_all(dev); |
| 2526 | clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); |
| 2527 | } |
| 2528 | |
| 2529 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2530 | /* Called only from hardware IRQ */ |
| 2531 | static void prism2_infdrop(struct net_device *dev) |
| 2532 | { |
| 2533 | static unsigned long last_inquire = 0; |
| 2534 | |
| 2535 | PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); |
| 2536 | |
| 2537 | /* some firmware versions seem to get stuck with |
| 2538 | * full CommTallies in high traffic load cases; every |
| 2539 | * packet will then cause INFDROP event and CommTallies |
| 2540 | * info frame will not be sent automatically. Try to |
| 2541 | * get out of this state by inquiring CommTallies. */ |
| 2542 | if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { |
| 2543 | hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 2544 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2545 | last_inquire = jiffies; |
| 2546 | } |
| 2547 | } |
| 2548 | |
| 2549 | |
| 2550 | /* Called only from hardware IRQ */ |
| 2551 | static void prism2_ev_tick(struct net_device *dev) |
| 2552 | { |
| 2553 | struct hostap_interface *iface; |
| 2554 | local_info_t *local; |
| 2555 | u16 evstat, inten; |
| 2556 | static int prev_stuck = 0; |
| 2557 | |
| 2558 | iface = netdev_priv(dev); |
| 2559 | local = iface->local; |
| 2560 | |
| 2561 | if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && |
| 2562 | local->last_tick_timer) { |
| 2563 | evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 2564 | inten = HFA384X_INW(HFA384X_INTEN_OFF); |
| 2565 | if (!prev_stuck) { |
| 2566 | printk(KERN_INFO "%s: SW TICK stuck? " |
| 2567 | "bits=0x%lx EvStat=%04x IntEn=%04x\n", |
| 2568 | dev->name, local->bits, evstat, inten); |
| 2569 | } |
| 2570 | local->sw_tick_stuck++; |
| 2571 | if ((evstat & HFA384X_BAP0_EVENTS) && |
| 2572 | (inten & HFA384X_BAP0_EVENTS)) { |
| 2573 | printk(KERN_INFO "%s: trying to recover from IRQ " |
| 2574 | "hang\n", dev->name); |
| 2575 | hfa384x_events_no_bap0(dev); |
| 2576 | } |
| 2577 | prev_stuck = 1; |
| 2578 | } else |
| 2579 | prev_stuck = 0; |
| 2580 | } |
| 2581 | |
| 2582 | |
| 2583 | /* Called only from hardware IRQ */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 2584 | static void prism2_check_magic(local_info_t *local) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2585 | { |
| 2586 | /* at least PCI Prism2.5 with bus mastering seems to sometimes |
| 2587 | * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the |
| 2588 | * register once or twice seems to get the correct value.. PCI cards |
| 2589 | * cannot anyway be removed during normal operation, so there is not |
| 2590 | * really any need for this verification with them. */ |
| 2591 | |
| 2592 | #ifndef PRISM2_PCI |
| 2593 | #ifndef final_version |
| 2594 | static unsigned long last_magic_err = 0; |
| 2595 | struct net_device *dev = local->dev; |
| 2596 | |
| 2597 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { |
| 2598 | if (!local->hw_ready) |
| 2599 | return; |
| 2600 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); |
| 2601 | if (time_after(jiffies, last_magic_err + 10 * HZ)) { |
| 2602 | printk("%s: Interrupt, but SWSUPPORT0 does not match: " |
| 2603 | "%04X != %04X - card removed?\n", dev->name, |
| 2604 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), |
| 2605 | HFA384X_MAGIC); |
| 2606 | last_magic_err = jiffies; |
| 2607 | } else if (net_ratelimit()) { |
| 2608 | printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " |
| 2609 | "MAGIC=%04x\n", dev->name, |
| 2610 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), |
| 2611 | HFA384X_MAGIC); |
| 2612 | } |
| 2613 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) |
| 2614 | schedule_work(&local->reset_queue); |
| 2615 | return; |
| 2616 | } |
| 2617 | #endif /* final_version */ |
| 2618 | #endif /* !PRISM2_PCI */ |
| 2619 | } |
| 2620 | |
| 2621 | |
| 2622 | /* Called only from hardware IRQ */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2623 | static irqreturn_t prism2_interrupt(int irq, void *dev_id) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2624 | { |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 2625 | struct net_device *dev = dev_id; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2626 | struct hostap_interface *iface; |
| 2627 | local_info_t *local; |
| 2628 | int events = 0; |
| 2629 | u16 ev; |
| 2630 | |
| 2631 | iface = netdev_priv(dev); |
| 2632 | local = iface->local; |
| 2633 | |
| 2634 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); |
| 2635 | |
| 2636 | if (local->func->card_present && !local->func->card_present(local)) { |
| 2637 | if (net_ratelimit()) { |
| 2638 | printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", |
| 2639 | dev->name); |
| 2640 | } |
| 2641 | return IRQ_HANDLED; |
| 2642 | } |
| 2643 | |
| 2644 | prism2_check_magic(local); |
| 2645 | |
| 2646 | for (;;) { |
| 2647 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 2648 | if (ev == 0xffff) { |
| 2649 | if (local->shutdown) |
| 2650 | return IRQ_HANDLED; |
| 2651 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); |
| 2652 | printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", |
| 2653 | dev->name); |
| 2654 | return IRQ_HANDLED; |
| 2655 | } |
| 2656 | |
| 2657 | ev &= HFA384X_INW(HFA384X_INTEN_OFF); |
| 2658 | if (ev == 0) |
| 2659 | break; |
| 2660 | |
| 2661 | if (ev & HFA384X_EV_CMD) { |
| 2662 | prism2_cmd_ev(dev); |
| 2663 | } |
| 2664 | |
| 2665 | /* Above events are needed even before hw is ready, but other |
| 2666 | * events should be skipped during initialization. This may |
| 2667 | * change for AllocEv if allocate_fid is implemented without |
| 2668 | * busy waiting. */ |
| 2669 | if (!local->hw_ready || local->hw_resetting || |
| 2670 | !local->dev_enabled) { |
| 2671 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); |
| 2672 | if (ev & HFA384X_EV_CMD) |
| 2673 | goto next_event; |
| 2674 | if ((ev & HFA384X_EVENT_MASK) == 0) |
| 2675 | return IRQ_HANDLED; |
| 2676 | if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && |
| 2677 | net_ratelimit()) { |
| 2678 | printk(KERN_DEBUG "%s: prism2_interrupt: hw " |
| 2679 | "not ready; skipping events 0x%04x " |
| 2680 | "(IntEn=0x%04x)%s%s%s\n", |
| 2681 | dev->name, ev, |
| 2682 | HFA384X_INW(HFA384X_INTEN_OFF), |
| 2683 | !local->hw_ready ? " (!hw_ready)" : "", |
| 2684 | local->hw_resetting ? |
| 2685 | " (hw_resetting)" : "", |
| 2686 | !local->dev_enabled ? |
| 2687 | " (!dev_enabled)" : ""); |
| 2688 | } |
| 2689 | HFA384X_OUTW(ev, HFA384X_EVACK_OFF); |
| 2690 | return IRQ_HANDLED; |
| 2691 | } |
| 2692 | |
| 2693 | if (ev & HFA384X_EV_TICK) { |
| 2694 | prism2_ev_tick(dev); |
| 2695 | HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); |
| 2696 | } |
| 2697 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2698 | if (ev & HFA384X_EV_ALLOC) { |
| 2699 | prism2_alloc_ev(dev); |
| 2700 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); |
| 2701 | } |
| 2702 | |
| 2703 | /* Reading data from the card is quite time consuming, so do it |
| 2704 | * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed |
| 2705 | * and unmasked after needed data has been read completely. */ |
| 2706 | if (ev & HFA384X_BAP0_EVENTS) { |
| 2707 | hfa384x_events_no_bap0(dev); |
| 2708 | tasklet_schedule(&local->bap_tasklet); |
| 2709 | } |
| 2710 | |
| 2711 | #ifndef final_version |
| 2712 | if (ev & HFA384X_EV_WTERR) { |
| 2713 | PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); |
| 2714 | HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); |
| 2715 | } |
| 2716 | #endif /* final_version */ |
| 2717 | |
| 2718 | if (ev & HFA384X_EV_INFDROP) { |
| 2719 | prism2_infdrop(dev); |
| 2720 | HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); |
| 2721 | } |
| 2722 | |
| 2723 | next_event: |
| 2724 | events++; |
| 2725 | if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { |
| 2726 | PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " |
| 2727 | "(EvStat=0x%04x)\n", |
| 2728 | PRISM2_MAX_INTERRUPT_EVENTS, |
| 2729 | HFA384X_INW(HFA384X_EVSTAT_OFF)); |
| 2730 | break; |
| 2731 | } |
| 2732 | } |
| 2733 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); |
| 2734 | return IRQ_RETVAL(events); |
| 2735 | } |
| 2736 | |
| 2737 | |
| 2738 | static void prism2_check_sta_fw_version(local_info_t *local) |
| 2739 | { |
| 2740 | struct hfa384x_comp_ident comp; |
| 2741 | int id, variant, major, minor; |
| 2742 | |
| 2743 | if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, |
| 2744 | &comp, sizeof(comp), 1) < 0) |
| 2745 | return; |
| 2746 | |
| 2747 | local->fw_ap = 0; |
| 2748 | id = le16_to_cpu(comp.id); |
| 2749 | if (id != HFA384X_COMP_ID_STA) { |
| 2750 | if (id == HFA384X_COMP_ID_FW_AP) |
| 2751 | local->fw_ap = 1; |
| 2752 | return; |
| 2753 | } |
| 2754 | |
| 2755 | major = __le16_to_cpu(comp.major); |
| 2756 | minor = __le16_to_cpu(comp.minor); |
| 2757 | variant = __le16_to_cpu(comp.variant); |
| 2758 | local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); |
| 2759 | |
| 2760 | /* Station firmware versions before 1.4.x seem to have a bug in |
| 2761 | * firmware-based WEP encryption when using Host AP mode, so use |
| 2762 | * host_encrypt as a default for them. Firmware version 1.4.9 is the |
| 2763 | * first one that has been seen to produce correct encryption, but the |
| 2764 | * bug might be fixed before that (although, at least 1.4.2 is broken). |
| 2765 | */ |
| 2766 | local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); |
| 2767 | |
| 2768 | if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && |
| 2769 | !local->fw_encrypt_ok) { |
| 2770 | printk(KERN_DEBUG "%s: defaulting to host-based encryption as " |
| 2771 | "a workaround for firmware bug in Host AP mode WEP\n", |
| 2772 | local->dev->name); |
| 2773 | local->host_encrypt = 1; |
| 2774 | } |
| 2775 | |
| 2776 | /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken |
| 2777 | * in station firmware versions before 1.5.x. With these versions, the |
| 2778 | * driver uses a workaround with bogus frame format (4th address after |
| 2779 | * the payload). This is not compatible with other AP devices. Since |
| 2780 | * the firmware bug is fixed in the latest station firmware versions, |
| 2781 | * automatically enable standard compliant mode for cards using station |
| 2782 | * firmware version 1.5.0 or newer. */ |
| 2783 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) |
| 2784 | local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; |
| 2785 | else { |
| 2786 | printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " |
| 2787 | "workaround for firmware bug in Host AP mode WDS\n", |
| 2788 | local->dev->name); |
| 2789 | } |
| 2790 | |
| 2791 | hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); |
| 2792 | } |
| 2793 | |
| 2794 | |
| 2795 | static void prism2_crypt_deinit_entries(local_info_t *local, int force) |
| 2796 | { |
| 2797 | struct list_head *ptr, *n; |
Jouni Malinen | 62fe7e3 | 2005-07-30 20:43:20 -0700 | [diff] [blame] | 2798 | struct ieee80211_crypt_data *entry; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2799 | |
| 2800 | for (ptr = local->crypt_deinit_list.next, n = ptr->next; |
| 2801 | ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) { |
Jouni Malinen | 62fe7e3 | 2005-07-30 20:43:20 -0700 | [diff] [blame] | 2802 | entry = list_entry(ptr, struct ieee80211_crypt_data, list); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2803 | |
| 2804 | if (atomic_read(&entry->refcnt) != 0 && !force) |
| 2805 | continue; |
| 2806 | |
| 2807 | list_del(ptr); |
| 2808 | |
| 2809 | if (entry->ops) |
| 2810 | entry->ops->deinit(entry->priv); |
| 2811 | kfree(entry); |
| 2812 | } |
| 2813 | } |
| 2814 | |
| 2815 | |
| 2816 | static void prism2_crypt_deinit_handler(unsigned long data) |
| 2817 | { |
| 2818 | local_info_t *local = (local_info_t *) data; |
| 2819 | unsigned long flags; |
| 2820 | |
| 2821 | spin_lock_irqsave(&local->lock, flags); |
| 2822 | prism2_crypt_deinit_entries(local, 0); |
| 2823 | if (!list_empty(&local->crypt_deinit_list)) { |
| 2824 | printk(KERN_DEBUG "%s: entries remaining in delayed crypt " |
| 2825 | "deletion list\n", local->dev->name); |
| 2826 | local->crypt_deinit_timer.expires = jiffies + HZ; |
| 2827 | add_timer(&local->crypt_deinit_timer); |
| 2828 | } |
| 2829 | spin_unlock_irqrestore(&local->lock, flags); |
| 2830 | |
| 2831 | } |
| 2832 | |
| 2833 | |
| 2834 | static void hostap_passive_scan(unsigned long data) |
| 2835 | { |
| 2836 | local_info_t *local = (local_info_t *) data; |
| 2837 | struct net_device *dev = local->dev; |
| 2838 | u16 channel; |
| 2839 | |
| 2840 | if (local->passive_scan_interval <= 0) |
| 2841 | return; |
| 2842 | |
| 2843 | if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { |
| 2844 | int max_tries = 16; |
| 2845 | |
| 2846 | /* Even though host system does not really know when the WLAN |
| 2847 | * MAC is sending frames, try to avoid changing channels for |
| 2848 | * passive scanning when a host-generated frame is being |
| 2849 | * transmitted */ |
| 2850 | if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { |
| 2851 | printk(KERN_DEBUG "%s: passive scan detected pending " |
| 2852 | "TX - delaying\n", dev->name); |
| 2853 | local->passive_scan_timer.expires = jiffies + HZ / 10; |
| 2854 | add_timer(&local->passive_scan_timer); |
| 2855 | return; |
| 2856 | } |
| 2857 | |
| 2858 | do { |
| 2859 | local->passive_scan_channel++; |
| 2860 | if (local->passive_scan_channel > 14) |
| 2861 | local->passive_scan_channel = 1; |
| 2862 | max_tries--; |
| 2863 | } while (!(local->channel_mask & |
| 2864 | (1 << (local->passive_scan_channel - 1))) && |
| 2865 | max_tries > 0); |
| 2866 | |
| 2867 | if (max_tries == 0) { |
| 2868 | printk(KERN_INFO "%s: no allowed passive scan channels" |
| 2869 | " found\n", dev->name); |
| 2870 | return; |
| 2871 | } |
| 2872 | |
| 2873 | printk(KERN_DEBUG "%s: passive scan channel %d\n", |
| 2874 | dev->name, local->passive_scan_channel); |
| 2875 | channel = local->passive_scan_channel; |
| 2876 | local->passive_scan_state = PASSIVE_SCAN_WAIT; |
| 2877 | local->passive_scan_timer.expires = jiffies + HZ / 10; |
| 2878 | } else { |
| 2879 | channel = local->channel; |
| 2880 | local->passive_scan_state = PASSIVE_SCAN_LISTEN; |
| 2881 | local->passive_scan_timer.expires = jiffies + |
| 2882 | local->passive_scan_interval * HZ; |
| 2883 | } |
| 2884 | |
| 2885 | if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | |
| 2886 | (HFA384X_TEST_CHANGE_CHANNEL << 8), |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 2887 | channel, NULL, 0)) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2888 | printk(KERN_ERR "%s: passive scan channel set %d " |
| 2889 | "failed\n", dev->name, channel); |
| 2890 | |
| 2891 | add_timer(&local->passive_scan_timer); |
| 2892 | } |
| 2893 | |
| 2894 | |
| 2895 | /* Called only as a scheduled task when communications quality values should |
| 2896 | * be updated. */ |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2897 | static void handle_comms_qual_update(struct work_struct *work) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2898 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2899 | local_info_t *local = |
| 2900 | container_of(work, local_info_t, comms_qual_update); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2901 | prism2_update_comms_qual(local->dev); |
| 2902 | } |
| 2903 | |
| 2904 | |
| 2905 | /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is |
| 2906 | * used to monitor that local->last_tick_timer is being updated. If not, |
| 2907 | * interrupt busy-loop is assumed and driver tries to recover by masking out |
| 2908 | * some events. */ |
| 2909 | static void hostap_tick_timer(unsigned long data) |
| 2910 | { |
| 2911 | static unsigned long last_inquire = 0; |
| 2912 | local_info_t *local = (local_info_t *) data; |
| 2913 | local->last_tick_timer = jiffies; |
| 2914 | |
| 2915 | /* Inquire CommTallies every 10 seconds to keep the statistics updated |
| 2916 | * more often during low load and when using 32-bit tallies. */ |
| 2917 | if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && |
| 2918 | !local->hw_downloading && local->hw_ready && |
| 2919 | !local->hw_resetting && local->dev_enabled) { |
| 2920 | hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, |
Pavel Roskin | b15eff2 | 2005-07-30 12:50:05 -0700 | [diff] [blame] | 2921 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2922 | last_inquire = jiffies; |
| 2923 | } |
| 2924 | |
| 2925 | if ((local->last_comms_qual_update == 0 || |
| 2926 | time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && |
| 2927 | (local->iw_mode == IW_MODE_INFRA || |
| 2928 | local->iw_mode == IW_MODE_ADHOC)) { |
| 2929 | schedule_work(&local->comms_qual_update); |
| 2930 | } |
| 2931 | |
| 2932 | local->tick_timer.expires = jiffies + 2 * HZ; |
| 2933 | add_timer(&local->tick_timer); |
| 2934 | } |
| 2935 | |
| 2936 | |
| 2937 | #ifndef PRISM2_NO_PROCFS_DEBUG |
| 2938 | static int prism2_registers_proc_read(char *page, char **start, off_t off, |
| 2939 | int count, int *eof, void *data) |
| 2940 | { |
| 2941 | char *p = page; |
| 2942 | local_info_t *local = (local_info_t *) data; |
| 2943 | |
| 2944 | if (off != 0) { |
| 2945 | *eof = 1; |
| 2946 | return 0; |
| 2947 | } |
| 2948 | |
| 2949 | #define SHOW_REG(n) \ |
| 2950 | p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) |
| 2951 | |
| 2952 | SHOW_REG(CMD); |
| 2953 | SHOW_REG(PARAM0); |
| 2954 | SHOW_REG(PARAM1); |
| 2955 | SHOW_REG(PARAM2); |
| 2956 | SHOW_REG(STATUS); |
| 2957 | SHOW_REG(RESP0); |
| 2958 | SHOW_REG(RESP1); |
| 2959 | SHOW_REG(RESP2); |
| 2960 | SHOW_REG(INFOFID); |
| 2961 | SHOW_REG(CONTROL); |
| 2962 | SHOW_REG(SELECT0); |
| 2963 | SHOW_REG(SELECT1); |
| 2964 | SHOW_REG(OFFSET0); |
| 2965 | SHOW_REG(OFFSET1); |
| 2966 | SHOW_REG(RXFID); |
| 2967 | SHOW_REG(ALLOCFID); |
| 2968 | SHOW_REG(TXCOMPLFID); |
| 2969 | SHOW_REG(SWSUPPORT0); |
| 2970 | SHOW_REG(SWSUPPORT1); |
| 2971 | SHOW_REG(SWSUPPORT2); |
| 2972 | SHOW_REG(EVSTAT); |
| 2973 | SHOW_REG(INTEN); |
| 2974 | SHOW_REG(EVACK); |
| 2975 | /* Do not read data registers, because they change the state of the |
| 2976 | * MAC (offset += 2) */ |
| 2977 | /* SHOW_REG(DATA0); */ |
| 2978 | /* SHOW_REG(DATA1); */ |
| 2979 | SHOW_REG(AUXPAGE); |
| 2980 | SHOW_REG(AUXOFFSET); |
| 2981 | /* SHOW_REG(AUXDATA); */ |
| 2982 | #ifdef PRISM2_PCI |
| 2983 | SHOW_REG(PCICOR); |
| 2984 | SHOW_REG(PCIHCR); |
| 2985 | SHOW_REG(PCI_M0_ADDRH); |
| 2986 | SHOW_REG(PCI_M0_ADDRL); |
| 2987 | SHOW_REG(PCI_M0_LEN); |
| 2988 | SHOW_REG(PCI_M0_CTL); |
| 2989 | SHOW_REG(PCI_STATUS); |
| 2990 | SHOW_REG(PCI_M1_ADDRH); |
| 2991 | SHOW_REG(PCI_M1_ADDRL); |
| 2992 | SHOW_REG(PCI_M1_LEN); |
| 2993 | SHOW_REG(PCI_M1_CTL); |
| 2994 | #endif /* PRISM2_PCI */ |
| 2995 | |
| 2996 | return (p - page); |
| 2997 | } |
| 2998 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
| 2999 | |
| 3000 | |
| 3001 | struct set_tim_data { |
| 3002 | struct list_head list; |
| 3003 | int aid; |
| 3004 | int set; |
| 3005 | }; |
| 3006 | |
| 3007 | static int prism2_set_tim(struct net_device *dev, int aid, int set) |
| 3008 | { |
| 3009 | struct list_head *ptr; |
| 3010 | struct set_tim_data *new_entry; |
| 3011 | struct hostap_interface *iface; |
| 3012 | local_info_t *local; |
| 3013 | |
| 3014 | iface = netdev_priv(dev); |
| 3015 | local = iface->local; |
| 3016 | |
Yan Burman | b0471bb7 | 2006-12-02 13:33:40 +0200 | [diff] [blame] | 3017 | new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3018 | if (new_entry == NULL) { |
| 3019 | printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n", |
| 3020 | local->dev->name); |
| 3021 | return -ENOMEM; |
| 3022 | } |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3023 | new_entry->aid = aid; |
| 3024 | new_entry->set = set; |
| 3025 | |
| 3026 | spin_lock_bh(&local->set_tim_lock); |
| 3027 | list_for_each(ptr, &local->set_tim_list) { |
| 3028 | struct set_tim_data *entry = |
| 3029 | list_entry(ptr, struct set_tim_data, list); |
| 3030 | if (entry->aid == aid) { |
| 3031 | PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " |
| 3032 | "set=%d ==> %d\n", |
| 3033 | local->dev->name, aid, entry->set, set); |
| 3034 | entry->set = set; |
| 3035 | kfree(new_entry); |
| 3036 | new_entry = NULL; |
| 3037 | break; |
| 3038 | } |
| 3039 | } |
| 3040 | if (new_entry) |
| 3041 | list_add_tail(&new_entry->list, &local->set_tim_list); |
| 3042 | spin_unlock_bh(&local->set_tim_lock); |
| 3043 | |
| 3044 | schedule_work(&local->set_tim_queue); |
| 3045 | |
| 3046 | return 0; |
| 3047 | } |
| 3048 | |
| 3049 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3050 | static void handle_set_tim_queue(struct work_struct *work) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3051 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3052 | local_info_t *local = container_of(work, local_info_t, set_tim_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3053 | struct set_tim_data *entry; |
| 3054 | u16 val; |
| 3055 | |
| 3056 | for (;;) { |
| 3057 | entry = NULL; |
| 3058 | spin_lock_bh(&local->set_tim_lock); |
| 3059 | if (!list_empty(&local->set_tim_list)) { |
| 3060 | entry = list_entry(local->set_tim_list.next, |
| 3061 | struct set_tim_data, list); |
| 3062 | list_del(&entry->list); |
| 3063 | } |
| 3064 | spin_unlock_bh(&local->set_tim_lock); |
| 3065 | if (!entry) |
| 3066 | break; |
| 3067 | |
| 3068 | PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", |
| 3069 | local->dev->name, entry->aid, entry->set); |
| 3070 | |
| 3071 | val = entry->aid; |
| 3072 | if (entry->set) |
| 3073 | val |= 0x8000; |
| 3074 | if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { |
| 3075 | printk(KERN_DEBUG "%s: set_tim failed (aid=%d " |
| 3076 | "set=%d)\n", |
| 3077 | local->dev->name, entry->aid, entry->set); |
| 3078 | } |
| 3079 | |
| 3080 | kfree(entry); |
| 3081 | } |
| 3082 | } |
| 3083 | |
| 3084 | |
| 3085 | static void prism2_clear_set_tim_queue(local_info_t *local) |
| 3086 | { |
| 3087 | struct list_head *ptr, *n; |
| 3088 | |
| 3089 | list_for_each_safe(ptr, n, &local->set_tim_list) { |
| 3090 | struct set_tim_data *entry; |
| 3091 | entry = list_entry(ptr, struct set_tim_data, list); |
| 3092 | list_del(&entry->list); |
| 3093 | kfree(entry); |
| 3094 | } |
| 3095 | } |
| 3096 | |
| 3097 | |
Arjan van de Ven | cd11acd | 2006-07-03 00:25:36 -0700 | [diff] [blame] | 3098 | /* |
| 3099 | * HostAP uses two layers of net devices, where the inner |
| 3100 | * layer gets called all the time from the outer layer. |
| 3101 | * This is a natural nesting, which needs a split lock type. |
| 3102 | */ |
| 3103 | static struct lock_class_key hostap_netdev_xmit_lock_key; |
| 3104 | |
| 3105 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3106 | static struct net_device * |
Dave Hansen | 0cd545d | 2005-07-30 12:49:58 -0700 | [diff] [blame] | 3107 | prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, |
| 3108 | struct device *sdev) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3109 | { |
| 3110 | struct net_device *dev; |
| 3111 | struct hostap_interface *iface; |
| 3112 | struct local_info *local; |
| 3113 | int len, i, ret; |
| 3114 | |
| 3115 | if (funcs == NULL) |
| 3116 | return NULL; |
| 3117 | |
| 3118 | len = strlen(dev_template); |
| 3119 | if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { |
| 3120 | printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", |
| 3121 | dev_template); |
| 3122 | return NULL; |
| 3123 | } |
| 3124 | |
| 3125 | len = sizeof(struct hostap_interface) + |
| 3126 | 3 + sizeof(struct local_info) + |
| 3127 | 3 + sizeof(struct ap_data); |
| 3128 | |
| 3129 | dev = alloc_etherdev(len); |
| 3130 | if (dev == NULL) |
| 3131 | return NULL; |
| 3132 | |
| 3133 | iface = netdev_priv(dev); |
| 3134 | local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); |
| 3135 | local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); |
| 3136 | local->dev = iface->dev = dev; |
| 3137 | iface->local = local; |
| 3138 | iface->type = HOSTAP_INTERFACE_MASTER; |
| 3139 | INIT_LIST_HEAD(&local->hostap_interfaces); |
| 3140 | |
| 3141 | local->hw_module = THIS_MODULE; |
| 3142 | |
| 3143 | #ifdef PRISM2_IO_DEBUG |
| 3144 | local->io_debug_enabled = 1; |
| 3145 | #endif /* PRISM2_IO_DEBUG */ |
| 3146 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3147 | local->func = funcs; |
| 3148 | local->func->cmd = hfa384x_cmd; |
| 3149 | local->func->read_regs = hfa384x_read_regs; |
| 3150 | local->func->get_rid = hfa384x_get_rid; |
| 3151 | local->func->set_rid = hfa384x_set_rid; |
| 3152 | local->func->hw_enable = prism2_hw_enable; |
| 3153 | local->func->hw_config = prism2_hw_config; |
| 3154 | local->func->hw_reset = prism2_hw_reset; |
| 3155 | local->func->hw_shutdown = prism2_hw_shutdown; |
| 3156 | local->func->reset_port = prism2_reset_port; |
| 3157 | local->func->schedule_reset = prism2_schedule_reset; |
| 3158 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 3159 | local->func->read_aux = prism2_download_aux_dump; |
| 3160 | local->func->download = prism2_download; |
| 3161 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 3162 | local->func->tx = prism2_tx_80211; |
| 3163 | local->func->set_tim = prism2_set_tim; |
| 3164 | local->func->need_tx_headroom = 0; /* no need to add txdesc in |
| 3165 | * skb->data (FIX: maybe for DMA bus |
| 3166 | * mastering? */ |
| 3167 | |
| 3168 | local->mtu = mtu; |
| 3169 | |
| 3170 | rwlock_init(&local->iface_lock); |
| 3171 | spin_lock_init(&local->txfidlock); |
| 3172 | spin_lock_init(&local->cmdlock); |
| 3173 | spin_lock_init(&local->baplock); |
| 3174 | spin_lock_init(&local->lock); |
Matthias Kaehlcke | 3623060 | 2007-07-30 07:40:04 +0200 | [diff] [blame] | 3175 | mutex_init(&local->rid_bap_mtx); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3176 | |
| 3177 | if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) |
| 3178 | card_idx = 0; |
| 3179 | local->card_idx = card_idx; |
| 3180 | |
| 3181 | len = strlen(essid); |
| 3182 | memcpy(local->essid, essid, |
| 3183 | len > MAX_SSID_LEN ? MAX_SSID_LEN : len); |
| 3184 | local->essid[MAX_SSID_LEN] = '\0'; |
| 3185 | i = GET_INT_PARM(iw_mode, card_idx); |
| 3186 | if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || |
| 3187 | i == IW_MODE_MONITOR) { |
| 3188 | local->iw_mode = i; |
| 3189 | } else { |
| 3190 | printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " |
| 3191 | "IW_MODE_MASTER\n", i); |
| 3192 | local->iw_mode = IW_MODE_MASTER; |
| 3193 | } |
| 3194 | local->channel = GET_INT_PARM(channel, card_idx); |
| 3195 | local->beacon_int = GET_INT_PARM(beacon_int, card_idx); |
| 3196 | local->dtim_period = GET_INT_PARM(dtim_period, card_idx); |
| 3197 | local->wds_max_connections = 16; |
| 3198 | local->tx_control = HFA384X_TX_CTRL_FLAGS; |
| 3199 | local->manual_retry_count = -1; |
| 3200 | local->rts_threshold = 2347; |
| 3201 | local->fragm_threshold = 2346; |
| 3202 | local->rssi_to_dBm = 100; /* default; to be overriden by |
| 3203 | * cnfDbmAdjust, if available */ |
| 3204 | local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; |
| 3205 | local->sram_type = -1; |
Jouni Malinen | 72ca9c6 | 2005-07-30 12:50:01 -0700 | [diff] [blame] | 3206 | local->scan_channel_mask = 0xffff; |
Pavel Roskin | 7cd8d3e | 2008-06-27 16:20:16 -0400 | [diff] [blame] | 3207 | local->monitor_type = PRISM2_MONITOR_RADIOTAP; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3208 | |
| 3209 | /* Initialize task queue structures */ |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3210 | INIT_WORK(&local->reset_queue, handle_reset_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3211 | INIT_WORK(&local->set_multicast_list_queue, |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3212 | hostap_set_multicast_list_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3213 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3214 | INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3215 | INIT_LIST_HEAD(&local->set_tim_list); |
| 3216 | spin_lock_init(&local->set_tim_lock); |
| 3217 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3218 | INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3219 | |
| 3220 | /* Initialize tasklets for handling hardware IRQ related operations |
| 3221 | * outside hw IRQ handler */ |
| 3222 | #define HOSTAP_TASKLET_INIT(q, f, d) \ |
| 3223 | do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ |
| 3224 | while (0) |
| 3225 | HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, |
| 3226 | (unsigned long) local); |
| 3227 | |
| 3228 | HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, |
| 3229 | (unsigned long) local); |
| 3230 | hostap_info_init(local); |
| 3231 | |
| 3232 | HOSTAP_TASKLET_INIT(&local->rx_tasklet, |
| 3233 | hostap_rx_tasklet, (unsigned long) local); |
| 3234 | skb_queue_head_init(&local->rx_list); |
| 3235 | |
| 3236 | HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, |
| 3237 | hostap_sta_tx_exc_tasklet, (unsigned long) local); |
| 3238 | skb_queue_head_init(&local->sta_tx_exc_list); |
| 3239 | |
| 3240 | INIT_LIST_HEAD(&local->cmd_queue); |
| 3241 | init_waitqueue_head(&local->hostscan_wq); |
| 3242 | INIT_LIST_HEAD(&local->crypt_deinit_list); |
| 3243 | init_timer(&local->crypt_deinit_timer); |
| 3244 | local->crypt_deinit_timer.data = (unsigned long) local; |
| 3245 | local->crypt_deinit_timer.function = prism2_crypt_deinit_handler; |
| 3246 | |
| 3247 | init_timer(&local->passive_scan_timer); |
| 3248 | local->passive_scan_timer.data = (unsigned long) local; |
| 3249 | local->passive_scan_timer.function = hostap_passive_scan; |
| 3250 | |
| 3251 | init_timer(&local->tick_timer); |
| 3252 | local->tick_timer.data = (unsigned long) local; |
| 3253 | local->tick_timer.function = hostap_tick_timer; |
| 3254 | local->tick_timer.expires = jiffies + 2 * HZ; |
| 3255 | add_timer(&local->tick_timer); |
| 3256 | |
| 3257 | INIT_LIST_HEAD(&local->bss_list); |
| 3258 | |
Daniel Drake | 09703f5 | 2007-09-26 21:45:24 +0100 | [diff] [blame] | 3259 | hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3260 | |
| 3261 | dev->hard_start_xmit = hostap_master_start_xmit; |
| 3262 | dev->type = ARPHRD_IEEE80211; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 3263 | dev->header_ops = &hostap_80211_ops; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3264 | |
| 3265 | rtnl_lock(); |
| 3266 | ret = dev_alloc_name(dev, "wifi%d"); |
Dave Hansen | 0cd545d | 2005-07-30 12:49:58 -0700 | [diff] [blame] | 3267 | SET_NETDEV_DEV(dev, sdev); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3268 | if (ret >= 0) |
| 3269 | ret = register_netdevice(dev); |
Arjan van de Ven | cd11acd | 2006-07-03 00:25:36 -0700 | [diff] [blame] | 3270 | |
| 3271 | lockdep_set_class(&dev->_xmit_lock, &hostap_netdev_xmit_lock_key); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3272 | rtnl_unlock(); |
| 3273 | if (ret < 0) { |
| 3274 | printk(KERN_WARNING "%s: register netdevice failed!\n", |
| 3275 | dev_info); |
| 3276 | goto fail; |
| 3277 | } |
| 3278 | printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); |
| 3279 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3280 | hostap_init_data(local); |
| 3281 | return dev; |
| 3282 | |
| 3283 | fail: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3284 | free_netdev(dev); |
| 3285 | return NULL; |
| 3286 | } |
| 3287 | |
| 3288 | |
| 3289 | static int hostap_hw_ready(struct net_device *dev) |
| 3290 | { |
| 3291 | struct hostap_interface *iface; |
| 3292 | struct local_info *local; |
| 3293 | |
| 3294 | iface = netdev_priv(dev); |
| 3295 | local = iface->local; |
| 3296 | local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, |
| 3297 | "", dev_template); |
| 3298 | |
| 3299 | if (local->ddev) { |
| 3300 | if (local->iw_mode == IW_MODE_INFRA || |
| 3301 | local->iw_mode == IW_MODE_ADHOC) { |
| 3302 | netif_carrier_off(local->dev); |
| 3303 | netif_carrier_off(local->ddev); |
| 3304 | } |
| 3305 | hostap_init_proc(local); |
Mathieu Chouquet-Stringer | 23f40dc | 2008-05-14 19:03:18 -0400 | [diff] [blame] | 3306 | #ifndef PRISM2_NO_PROCFS_DEBUG |
| 3307 | create_proc_read_entry("registers", 0, local->proc, |
| 3308 | prism2_registers_proc_read, local); |
| 3309 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3310 | hostap_init_ap_proc(local); |
| 3311 | return 0; |
| 3312 | } |
| 3313 | |
| 3314 | return -1; |
| 3315 | } |
| 3316 | |
| 3317 | |
| 3318 | static void prism2_free_local_data(struct net_device *dev) |
| 3319 | { |
| 3320 | struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; |
| 3321 | int i; |
| 3322 | struct hostap_interface *iface; |
| 3323 | struct local_info *local; |
| 3324 | struct list_head *ptr, *n; |
| 3325 | |
| 3326 | if (dev == NULL) |
| 3327 | return; |
| 3328 | |
| 3329 | iface = netdev_priv(dev); |
| 3330 | local = iface->local; |
| 3331 | |
Jouni Malinen | 7cb3cd0 | 2005-10-02 17:19:01 -0700 | [diff] [blame] | 3332 | /* Unregister all netdevs before freeing local data. */ |
| 3333 | list_for_each_safe(ptr, n, &local->hostap_interfaces) { |
| 3334 | iface = list_entry(ptr, struct hostap_interface, list); |
| 3335 | if (iface->type == HOSTAP_INTERFACE_MASTER) { |
| 3336 | /* special handling for this interface below */ |
| 3337 | continue; |
| 3338 | } |
| 3339 | hostap_remove_interface(iface->dev, 0, 1); |
| 3340 | } |
| 3341 | |
| 3342 | unregister_netdev(local->dev); |
| 3343 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3344 | flush_scheduled_work(); |
| 3345 | |
| 3346 | if (timer_pending(&local->crypt_deinit_timer)) |
| 3347 | del_timer(&local->crypt_deinit_timer); |
| 3348 | prism2_crypt_deinit_entries(local, 1); |
| 3349 | |
| 3350 | if (timer_pending(&local->passive_scan_timer)) |
| 3351 | del_timer(&local->passive_scan_timer); |
| 3352 | |
| 3353 | if (timer_pending(&local->tick_timer)) |
| 3354 | del_timer(&local->tick_timer); |
| 3355 | |
| 3356 | prism2_clear_cmd_queue(local); |
| 3357 | |
| 3358 | skb_queue_purge(&local->info_list); |
| 3359 | skb_queue_purge(&local->rx_list); |
| 3360 | skb_queue_purge(&local->sta_tx_exc_list); |
| 3361 | |
| 3362 | if (local->dev_enabled) |
| 3363 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); |
| 3364 | |
| 3365 | for (i = 0; i < WEP_KEYS; i++) { |
Jouni Malinen | 62fe7e3 | 2005-07-30 20:43:20 -0700 | [diff] [blame] | 3366 | struct ieee80211_crypt_data *crypt = local->crypt[i]; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3367 | if (crypt) { |
| 3368 | if (crypt->ops) |
| 3369 | crypt->ops->deinit(crypt->priv); |
| 3370 | kfree(crypt); |
| 3371 | local->crypt[i] = NULL; |
| 3372 | } |
| 3373 | } |
| 3374 | |
| 3375 | if (local->ap != NULL) |
| 3376 | hostap_free_data(local->ap); |
| 3377 | |
| 3378 | #ifndef PRISM2_NO_PROCFS_DEBUG |
| 3379 | if (local->proc != NULL) |
| 3380 | remove_proc_entry("registers", local->proc); |
| 3381 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
| 3382 | hostap_remove_proc(local); |
| 3383 | |
| 3384 | tx_cb = local->tx_callback; |
| 3385 | while (tx_cb != NULL) { |
| 3386 | tx_cb_prev = tx_cb; |
| 3387 | tx_cb = tx_cb->next; |
| 3388 | kfree(tx_cb_prev); |
| 3389 | } |
| 3390 | |
| 3391 | hostap_set_hostapd(local, 0, 0); |
| 3392 | hostap_set_hostapd_sta(local, 0, 0); |
| 3393 | |
| 3394 | for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { |
| 3395 | if (local->frag_cache[i].skb != NULL) |
| 3396 | dev_kfree_skb(local->frag_cache[i].skb); |
| 3397 | } |
| 3398 | |
| 3399 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 3400 | prism2_download_free_data(local->dl_pri); |
| 3401 | prism2_download_free_data(local->dl_sec); |
| 3402 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 3403 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3404 | prism2_clear_set_tim_queue(local); |
| 3405 | |
| 3406 | list_for_each_safe(ptr, n, &local->bss_list) { |
| 3407 | struct hostap_bss_info *bss = |
| 3408 | list_entry(ptr, struct hostap_bss_info, list); |
| 3409 | kfree(bss); |
| 3410 | } |
| 3411 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3412 | kfree(local->pda); |
| 3413 | kfree(local->last_scan_results); |
| 3414 | kfree(local->generic_elem); |
| 3415 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3416 | free_netdev(local->dev); |
| 3417 | } |
| 3418 | |
| 3419 | |
| 3420 | #ifndef PRISM2_PLX |
| 3421 | static void prism2_suspend(struct net_device *dev) |
| 3422 | { |
| 3423 | struct hostap_interface *iface; |
| 3424 | struct local_info *local; |
| 3425 | union iwreq_data wrqu; |
| 3426 | |
Yoann Padioleau | 6dbc9c8 | 2007-08-03 19:37:16 +0200 | [diff] [blame] | 3427 | iface = netdev_priv(dev); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3428 | local = iface->local; |
| 3429 | |
| 3430 | /* Send disconnect event, e.g., to trigger reassociation after resume |
| 3431 | * if wpa_supplicant is used. */ |
| 3432 | memset(&wrqu, 0, sizeof(wrqu)); |
| 3433 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 3434 | wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); |
| 3435 | |
| 3436 | /* Disable hardware and firmware */ |
| 3437 | prism2_hw_shutdown(dev, 0); |
| 3438 | } |
| 3439 | #endif /* PRISM2_PLX */ |
| 3440 | |
| 3441 | |
| 3442 | /* These might at some point be compiled separately and used as separate |
| 3443 | * kernel modules or linked into one */ |
| 3444 | #ifdef PRISM2_DOWNLOAD_SUPPORT |
| 3445 | #include "hostap_download.c" |
| 3446 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ |
| 3447 | |
| 3448 | #ifdef PRISM2_CALLBACK |
| 3449 | /* External hostap_callback.c file can be used to, e.g., blink activity led. |
| 3450 | * This can use platform specific code and must define prism2_callback() |
| 3451 | * function (if PRISM2_CALLBACK is not defined, these function calls are not |
| 3452 | * used. */ |
| 3453 | #include "hostap_callback.c" |
| 3454 | #endif /* PRISM2_CALLBACK */ |