Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/net/wireless/ipw2x00/ipw2100.c

  1 /******************************************************************************
  2 
  3   Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
  4 
  5   This program is free software; you can redistribute it and/or modify it
  6   under the terms of version 2 of the GNU General Public License as
  7   published by the Free Software Foundation.
  8 
  9   This program is distributed in the hope that it will be useful, but WITHOUT
 10   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12   more details.
 13 
 14   You should have received a copy of the GNU General Public License along with
 15   this program; if not, write to the Free Software Foundation, Inc., 59
 16   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 17 
 18   The full GNU General Public License is included in this distribution in the
 19   file called LICENSE.
 20 
 21   Contact Information:
 22   Intel Linux Wireless <ilw@linux.intel.com>
 23   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 24 
 25   Portions of this file are based on the sample_* files provided by Wireless
 26   Extensions 0.26 package and copyright (c) 1997-2003 Jean Tourrilhes
 27   <jt@hpl.hp.com>
 28 
 29   Portions of this file are based on the Host AP project,
 30   Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
 31     <j@w1.fi>
 32   Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
 33 
 34   Portions of ipw2100_mod_firmware_load, ipw2100_do_mod_firmware_load, and
 35   ipw2100_fw_load are loosely based on drivers/sound/sound_firmware.c
 36   available in the 2.4.25 kernel sources, and are copyright (c) Alan Cox
 37 
 38 ******************************************************************************/
 39 /*
 40 
 41  Initial driver on which this is based was developed by Janusz Gorycki,
 42  Maciej Urbaniak, and Maciej Sosnowski.
 43 
 44  Promiscuous mode support added by Jacek Wysoczynski and Maciej Urbaniak.
 45 
 46 Theory of Operation
 47 
 48 Tx - Commands and Data
 49 
 50 Firmware and host share a circular queue of Transmit Buffer Descriptors (TBDs)
 51 Each TBD contains a pointer to the physical (dma_addr_t) address of data being
 52 sent to the firmware as well as the length of the data.
 53 
 54 The host writes to the TBD queue at the WRITE index.  The WRITE index points
 55 to the _next_ packet to be written and is advanced when after the TBD has been
 56 filled.
 57 
 58 The firmware pulls from the TBD queue at the READ index.  The READ index points
 59 to the currently being read entry, and is advanced once the firmware is
 60 done with a packet.
 61 
 62 When data is sent to the firmware, the first TBD is used to indicate to the
 63 firmware if a Command or Data is being sent.  If it is Command, all of the
 64 command information is contained within the physical address referred to by the
 65 TBD.  If it is Data, the first TBD indicates the type of data packet, number
 66 of fragments, etc.  The next TBD then refers to the actual packet location.
 67 
 68 The Tx flow cycle is as follows:
 69 
 70 1) ipw2100_tx() is called by kernel with SKB to transmit
 71 2) Packet is move from the tx_free_list and appended to the transmit pending
 72    list (tx_pend_list)
 73 3) work is scheduled to move pending packets into the shared circular queue.
 74 4) when placing packet in the circular queue, the incoming SKB is DMA mapped
 75    to a physical address.  That address is entered into a TBD.  Two TBDs are
 76    filled out.  The first indicating a data packet, the second referring to the
 77    actual payload data.
 78 5) the packet is removed from tx_pend_list and placed on the end of the
 79    firmware pending list (fw_pend_list)
 80 6) firmware is notified that the WRITE index has
 81 7) Once the firmware has processed the TBD, INTA is triggered.
 82 8) For each Tx interrupt received from the firmware, the READ index is checked
 83    to see which TBDs are done being processed.
 84 9) For each TBD that has been processed, the ISR pulls the oldest packet
 85    from the fw_pend_list.
 86 10)The packet structure contained in the fw_pend_list is then used
 87    to unmap the DMA address and to free the SKB originally passed to the driver
 88    from the kernel.
 89 11)The packet structure is placed onto the tx_free_list
 90 
 91 The above steps are the same for commands, only the msg_free_list/msg_pend_list
 92 are used instead of tx_free_list/tx_pend_list
 93 
 94 ...
 95 
 96 Critical Sections / Locking :
 97 
 98 There are two locks utilized.  The first is the low level lock (priv->low_lock)
 99 that protects the following:
100 
101 - Access to the Tx/Rx queue lists via priv->low_lock. The lists are as follows:
102 
103   tx_free_list : Holds pre-allocated Tx buffers.
104     TAIL modified in __ipw2100_tx_process()
105     HEAD modified in ipw2100_tx()
106 
107   tx_pend_list : Holds used Tx buffers waiting to go into the TBD ring
108     TAIL modified ipw2100_tx()
109     HEAD modified by ipw2100_tx_send_data()
110 
111   msg_free_list : Holds pre-allocated Msg (Command) buffers
112     TAIL modified in __ipw2100_tx_process()
113     HEAD modified in ipw2100_hw_send_command()
114 
115   msg_pend_list : Holds used Msg buffers waiting to go into the TBD ring
116     TAIL modified in ipw2100_hw_send_command()
117     HEAD modified in ipw2100_tx_send_commands()
118 
119   The flow of data on the TX side is as follows:
120 
121   MSG_FREE_LIST + COMMAND => MSG_PEND_LIST => TBD => MSG_FREE_LIST
122   TX_FREE_LIST + DATA => TX_PEND_LIST => TBD => TX_FREE_LIST
123 
124   The methods that work on the TBD ring are protected via priv->low_lock.
125 
126 - The internal data state of the device itself
127 - Access to the firmware read/write indexes for the BD queues
128   and associated logic
129 
130 All external entry functions are locked with the priv->action_lock to ensure
131 that only one external action is invoked at a time.
132 
133 
134 */
135 
136 #include <linux/compiler.h>
137 #include <linux/errno.h>
138 #include <linux/if_arp.h>
139 #include <linux/in6.h>
140 #include <linux/in.h>
141 #include <linux/ip.h>
142 #include <linux/kernel.h>
143 #include <linux/kmod.h>
144 #include <linux/module.h>
145 #include <linux/netdevice.h>
146 #include <linux/ethtool.h>
147 #include <linux/pci.h>
148 #include <linux/dma-mapping.h>
149 #include <linux/proc_fs.h>
150 #include <linux/skbuff.h>
151 #include <asm/uaccess.h>
152 #include <asm/io.h>
153 #include <linux/fs.h>
154 #include <linux/mm.h>
155 #include <linux/slab.h>
156 #include <linux/unistd.h>
157 #include <linux/stringify.h>
158 #include <linux/tcp.h>
159 #include <linux/types.h>
160 #include <linux/time.h>
161 #include <linux/firmware.h>
162 #include <linux/acpi.h>
163 #include <linux/ctype.h>
164 #include <linux/pm_qos.h>
165 
166 #include <net/lib80211.h>
167 
168 #include "ipw2100.h"
169 #include "ipw.h"
170 
171 #define IPW2100_VERSION "git-1.2.2"
172 
173 #define DRV_NAME        "ipw2100"
174 #define DRV_VERSION     IPW2100_VERSION
175 #define DRV_DESCRIPTION "Intel(R) PRO/Wireless 2100 Network Driver"
176 #define DRV_COPYRIGHT   "Copyright(c) 2003-2006 Intel Corporation"
177 
178 static struct pm_qos_request ipw2100_pm_qos_req;
179 
180 /* Debugging stuff */
181 #ifdef CONFIG_IPW2100_DEBUG
182 #define IPW2100_RX_DEBUG        /* Reception debugging */
183 #endif
184 
185 MODULE_DESCRIPTION(DRV_DESCRIPTION);
186 MODULE_VERSION(DRV_VERSION);
187 MODULE_AUTHOR(DRV_COPYRIGHT);
188 MODULE_LICENSE("GPL");
189 
190 static int debug = 0;
191 static int network_mode = 0;
192 static int channel = 0;
193 static int associate = 0;
194 static int disable = 0;
195 #ifdef CONFIG_PM
196 static struct ipw2100_fw ipw2100_firmware;
197 #endif
198 
199 #include <linux/moduleparam.h>
200 module_param(debug, int, 0444);
201 module_param_named(mode, network_mode, int, 0444);
202 module_param(channel, int, 0444);
203 module_param(associate, int, 0444);
204 module_param(disable, int, 0444);
205 
206 MODULE_PARM_DESC(debug, "debug level");
207 MODULE_PARM_DESC(mode, "network mode (0=BSS,1=IBSS,2=Monitor)");
208 MODULE_PARM_DESC(channel, "channel");
209 MODULE_PARM_DESC(associate, "auto associate when scanning (default off)");
210 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
211 
212 static u32 ipw2100_debug_level = IPW_DL_NONE;
213 
214 #ifdef CONFIG_IPW2100_DEBUG
215 #define IPW_DEBUG(level, message...) \
216 do { \
217         if (ipw2100_debug_level & (level)) { \
218                 printk(KERN_DEBUG "ipw2100: %c %s ", \
219                        in_interrupt() ? 'I' : 'U',  __func__); \
220                 printk(message); \
221         } \
222 } while (0)
223 #else
224 #define IPW_DEBUG(level, message...) do {} while (0)
225 #endif                          /* CONFIG_IPW2100_DEBUG */
226 
227 #ifdef CONFIG_IPW2100_DEBUG
228 static const char *command_types[] = {
229         "undefined",
230         "unused",               /* HOST_ATTENTION */
231         "HOST_COMPLETE",
232         "unused",               /* SLEEP */
233         "unused",               /* HOST_POWER_DOWN */
234         "unused",
235         "SYSTEM_CONFIG",
236         "unused",               /* SET_IMR */
237         "SSID",
238         "MANDATORY_BSSID",
239         "AUTHENTICATION_TYPE",
240         "ADAPTER_ADDRESS",
241         "PORT_TYPE",
242         "INTERNATIONAL_MODE",
243         "CHANNEL",
244         "RTS_THRESHOLD",
245         "FRAG_THRESHOLD",
246         "POWER_MODE",
247         "TX_RATES",
248         "BASIC_TX_RATES",
249         "WEP_KEY_INFO",
250         "unused",
251         "unused",
252         "unused",
253         "unused",
254         "WEP_KEY_INDEX",
255         "WEP_FLAGS",
256         "ADD_MULTICAST",
257         "CLEAR_ALL_MULTICAST",
258         "BEACON_INTERVAL",
259         "ATIM_WINDOW",
260         "CLEAR_STATISTICS",
261         "undefined",
262         "undefined",
263         "undefined",
264         "undefined",
265         "TX_POWER_INDEX",
266         "undefined",
267         "undefined",
268         "undefined",
269         "undefined",
270         "undefined",
271         "undefined",
272         "BROADCAST_SCAN",
273         "CARD_DISABLE",
274         "PREFERRED_BSSID",
275         "SET_SCAN_OPTIONS",
276         "SCAN_DWELL_TIME",
277         "SWEEP_TABLE",
278         "AP_OR_STATION_TABLE",
279         "GROUP_ORDINALS",
280         "SHORT_RETRY_LIMIT",
281         "LONG_RETRY_LIMIT",
282         "unused",               /* SAVE_CALIBRATION */
283         "unused",               /* RESTORE_CALIBRATION */
284         "undefined",
285         "undefined",
286         "undefined",
287         "HOST_PRE_POWER_DOWN",
288         "unused",               /* HOST_INTERRUPT_COALESCING */
289         "undefined",
290         "CARD_DISABLE_PHY_OFF",
291         "MSDU_TX_RATES",
292         "undefined",
293         "SET_STATION_STAT_BITS",
294         "CLEAR_STATIONS_STAT_BITS",
295         "LEAP_ROGUE_MODE",
296         "SET_SECURITY_INFORMATION",
297         "DISASSOCIATION_BSSID",
298         "SET_WPA_ASS_IE"
299 };
300 #endif
301 
302 static const long ipw2100_frequencies[] = {
303         2412, 2417, 2422, 2427,
304         2432, 2437, 2442, 2447,
305         2452, 2457, 2462, 2467,
306         2472, 2484
307 };
308 
309 #define FREQ_COUNT      ARRAY_SIZE(ipw2100_frequencies)
310 
311 static struct ieee80211_rate ipw2100_bg_rates[] = {
312         { .bitrate = 10 },
313         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
314         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
315         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
316 };
317 
318 #define RATE_COUNT ARRAY_SIZE(ipw2100_bg_rates)
319 
320 /* Pre-decl until we get the code solid and then we can clean it up */
321 static void ipw2100_tx_send_commands(struct ipw2100_priv *priv);
322 static void ipw2100_tx_send_data(struct ipw2100_priv *priv);
323 static int ipw2100_adapter_setup(struct ipw2100_priv *priv);
324 
325 static void ipw2100_queues_initialize(struct ipw2100_priv *priv);
326 static void ipw2100_queues_free(struct ipw2100_priv *priv);
327 static int ipw2100_queues_allocate(struct ipw2100_priv *priv);
328 
329 static int ipw2100_fw_download(struct ipw2100_priv *priv,
330                                struct ipw2100_fw *fw);
331 static int ipw2100_get_firmware(struct ipw2100_priv *priv,
332                                 struct ipw2100_fw *fw);
333 static int ipw2100_get_fwversion(struct ipw2100_priv *priv, char *buf,
334                                  size_t max);
335 static int ipw2100_get_ucodeversion(struct ipw2100_priv *priv, char *buf,
336                                     size_t max);
337 static void ipw2100_release_firmware(struct ipw2100_priv *priv,
338                                      struct ipw2100_fw *fw);
339 static int ipw2100_ucode_download(struct ipw2100_priv *priv,
340                                   struct ipw2100_fw *fw);
341 static void ipw2100_wx_event_work(struct work_struct *work);
342 static struct iw_statistics *ipw2100_wx_wireless_stats(struct net_device *dev);
343 static struct iw_handler_def ipw2100_wx_handler_def;
344 
345 static inline void read_register(struct net_device *dev, u32 reg, u32 * val)
346 {
347         struct ipw2100_priv *priv = libipw_priv(dev);
348 
349         *val = ioread32(priv->ioaddr + reg);
350         IPW_DEBUG_IO("r: 0x%08X => 0x%08X\n", reg, *val);
351 }
352 
353 static inline void write_register(struct net_device *dev, u32 reg, u32 val)
354 {
355         struct ipw2100_priv *priv = libipw_priv(dev);
356 
357         iowrite32(val, priv->ioaddr + reg);
358         IPW_DEBUG_IO("w: 0x%08X <= 0x%08X\n", reg, val);
359 }
360 
361 static inline void read_register_word(struct net_device *dev, u32 reg,
362                                       u16 * val)
363 {
364         struct ipw2100_priv *priv = libipw_priv(dev);
365 
366         *val = ioread16(priv->ioaddr + reg);
367         IPW_DEBUG_IO("r: 0x%08X => %04X\n", reg, *val);
368 }
369 
370 static inline void read_register_byte(struct net_device *dev, u32 reg, u8 * val)
371 {
372         struct ipw2100_priv *priv = libipw_priv(dev);
373 
374         *val = ioread8(priv->ioaddr + reg);
375         IPW_DEBUG_IO("r: 0x%08X => %02X\n", reg, *val);
376 }
377 
378 static inline void write_register_word(struct net_device *dev, u32 reg, u16 val)
379 {
380         struct ipw2100_priv *priv = libipw_priv(dev);
381 
382         iowrite16(val, priv->ioaddr + reg);
383         IPW_DEBUG_IO("w: 0x%08X <= %04X\n", reg, val);
384 }
385 
386 static inline void write_register_byte(struct net_device *dev, u32 reg, u8 val)
387 {
388         struct ipw2100_priv *priv = libipw_priv(dev);
389 
390         iowrite8(val, priv->ioaddr + reg);
391         IPW_DEBUG_IO("w: 0x%08X =< %02X\n", reg, val);
392 }
393 
394 static inline void read_nic_dword(struct net_device *dev, u32 addr, u32 * val)
395 {
396         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
397                        addr & IPW_REG_INDIRECT_ADDR_MASK);
398         read_register(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
399 }
400 
401 static inline void write_nic_dword(struct net_device *dev, u32 addr, u32 val)
402 {
403         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
404                        addr & IPW_REG_INDIRECT_ADDR_MASK);
405         write_register(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
406 }
407 
408 static inline void read_nic_word(struct net_device *dev, u32 addr, u16 * val)
409 {
410         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
411                        addr & IPW_REG_INDIRECT_ADDR_MASK);
412         read_register_word(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
413 }
414 
415 static inline void write_nic_word(struct net_device *dev, u32 addr, u16 val)
416 {
417         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
418                        addr & IPW_REG_INDIRECT_ADDR_MASK);
419         write_register_word(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
420 }
421 
422 static inline void read_nic_byte(struct net_device *dev, u32 addr, u8 * val)
423 {
424         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
425                        addr & IPW_REG_INDIRECT_ADDR_MASK);
426         read_register_byte(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
427 }
428 
429 static inline void write_nic_byte(struct net_device *dev, u32 addr, u8 val)
430 {
431         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
432                        addr & IPW_REG_INDIRECT_ADDR_MASK);
433         write_register_byte(dev, IPW_REG_INDIRECT_ACCESS_DATA, val);
434 }
435 
436 static inline void write_nic_auto_inc_address(struct net_device *dev, u32 addr)
437 {
438         write_register(dev, IPW_REG_AUTOINCREMENT_ADDRESS,
439                        addr & IPW_REG_INDIRECT_ADDR_MASK);
440 }
441 
442 static inline void write_nic_dword_auto_inc(struct net_device *dev, u32 val)
443 {
444         write_register(dev, IPW_REG_AUTOINCREMENT_DATA, val);
445 }
446 
447 static void write_nic_memory(struct net_device *dev, u32 addr, u32 len,
448                                     const u8 * buf)
449 {
450         u32 aligned_addr;
451         u32 aligned_len;
452         u32 dif_len;
453         u32 i;
454 
455         /* read first nibble byte by byte */
456         aligned_addr = addr & (~0x3);
457         dif_len = addr - aligned_addr;
458         if (dif_len) {
459                 /* Start reading at aligned_addr + dif_len */
460                 write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
461                                aligned_addr);
462                 for (i = dif_len; i < 4; i++, buf++)
463                         write_register_byte(dev,
464                                             IPW_REG_INDIRECT_ACCESS_DATA + i,
465                                             *buf);
466 
467                 len -= dif_len;
468                 aligned_addr += 4;
469         }
470 
471         /* read DWs through autoincrement registers */
472         write_register(dev, IPW_REG_AUTOINCREMENT_ADDRESS, aligned_addr);
473         aligned_len = len & (~0x3);
474         for (i = 0; i < aligned_len; i += 4, buf += 4, aligned_addr += 4)
475                 write_register(dev, IPW_REG_AUTOINCREMENT_DATA, *(u32 *) buf);
476 
477         /* copy the last nibble */
478         dif_len = len - aligned_len;
479         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS, aligned_addr);
480         for (i = 0; i < dif_len; i++, buf++)
481                 write_register_byte(dev, IPW_REG_INDIRECT_ACCESS_DATA + i,
482                                     *buf);
483 }
484 
485 static void read_nic_memory(struct net_device *dev, u32 addr, u32 len,
486                                    u8 * buf)
487 {
488         u32 aligned_addr;
489         u32 aligned_len;
490         u32 dif_len;
491         u32 i;
492 
493         /* read first nibble byte by byte */
494         aligned_addr = addr & (~0x3);
495         dif_len = addr - aligned_addr;
496         if (dif_len) {
497                 /* Start reading at aligned_addr + dif_len */
498                 write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS,
499                                aligned_addr);
500                 for (i = dif_len; i < 4; i++, buf++)
501                         read_register_byte(dev,
502                                            IPW_REG_INDIRECT_ACCESS_DATA + i,
503                                            buf);
504 
505                 len -= dif_len;
506                 aligned_addr += 4;
507         }
508 
509         /* read DWs through autoincrement registers */
510         write_register(dev, IPW_REG_AUTOINCREMENT_ADDRESS, aligned_addr);
511         aligned_len = len & (~0x3);
512         for (i = 0; i < aligned_len; i += 4, buf += 4, aligned_addr += 4)
513                 read_register(dev, IPW_REG_AUTOINCREMENT_DATA, (u32 *) buf);
514 
515         /* copy the last nibble */
516         dif_len = len - aligned_len;
517         write_register(dev, IPW_REG_INDIRECT_ACCESS_ADDRESS, aligned_addr);
518         for (i = 0; i < dif_len; i++, buf++)
519                 read_register_byte(dev, IPW_REG_INDIRECT_ACCESS_DATA + i, buf);
520 }
521 
522 static bool ipw2100_hw_is_adapter_in_system(struct net_device *dev)
523 {
524         u32 dbg;
525 
526         read_register(dev, IPW_REG_DOA_DEBUG_AREA_START, &dbg);
527 
528         return dbg == IPW_DATA_DOA_DEBUG_VALUE;
529 }
530 
531 static int ipw2100_get_ordinal(struct ipw2100_priv *priv, u32 ord,
532                                void *val, u32 * len)
533 {
534         struct ipw2100_ordinals *ordinals = &priv->ordinals;
535         u32 addr;
536         u32 field_info;
537         u16 field_len;
538         u16 field_count;
539         u32 total_length;
540 
541         if (ordinals->table1_addr == 0) {
542                 printk(KERN_WARNING DRV_NAME ": attempt to use fw ordinals "
543                        "before they have been loaded.\n");
544                 return -EINVAL;
545         }
546 
547         if (IS_ORDINAL_TABLE_ONE(ordinals, ord)) {
548                 if (*len < IPW_ORD_TAB_1_ENTRY_SIZE) {
549                         *len = IPW_ORD_TAB_1_ENTRY_SIZE;
550 
551                         printk(KERN_WARNING DRV_NAME
552                                ": ordinal buffer length too small, need %zd\n",
553                                IPW_ORD_TAB_1_ENTRY_SIZE);
554 
555                         return -EINVAL;
556                 }
557 
558                 read_nic_dword(priv->net_dev,
559                                ordinals->table1_addr + (ord << 2), &addr);
560                 read_nic_dword(priv->net_dev, addr, val);
561 
562                 *len = IPW_ORD_TAB_1_ENTRY_SIZE;
563 
564                 return 0;
565         }
566 
567         if (IS_ORDINAL_TABLE_TWO(ordinals, ord)) {
568 
569                 ord -= IPW_START_ORD_TAB_2;
570 
571                 /* get the address of statistic */
572                 read_nic_dword(priv->net_dev,
573                                ordinals->table2_addr + (ord << 3), &addr);
574 
575                 /* get the second DW of statistics ;
576                  * two 16-bit words - first is length, second is count */
577                 read_nic_dword(priv->net_dev,
578                                ordinals->table2_addr + (ord << 3) + sizeof(u32),
579                                &field_info);
580 
581                 /* get each entry length */
582                 field_len = *((u16 *) & field_info);
583 
584                 /* get number of entries */
585                 field_count = *(((u16 *) & field_info) + 1);
586 
587                 /* abort if no enough memory */
588                 total_length = field_len * field_count;
589                 if (total_length > *len) {
590                         *len = total_length;
591                         return -EINVAL;
592                 }
593 
594                 *len = total_length;
595                 if (!total_length)
596                         return 0;
597 
598                 /* read the ordinal data from the SRAM */
599                 read_nic_memory(priv->net_dev, addr, total_length, val);
600 
601                 return 0;
602         }
603 
604         printk(KERN_WARNING DRV_NAME ": ordinal %d neither in table 1 nor "
605                "in table 2\n", ord);
606 
607         return -EINVAL;
608 }
609 
610 static int ipw2100_set_ordinal(struct ipw2100_priv *priv, u32 ord, u32 * val,
611                                u32 * len)
612 {
613         struct ipw2100_ordinals *ordinals = &priv->ordinals;
614         u32 addr;
615 
616         if (IS_ORDINAL_TABLE_ONE(ordinals, ord)) {
617                 if (*len != IPW_ORD_TAB_1_ENTRY_SIZE) {
618                         *len = IPW_ORD_TAB_1_ENTRY_SIZE;
619                         IPW_DEBUG_INFO("wrong size\n");
620                         return -EINVAL;
621                 }
622 
623                 read_nic_dword(priv->net_dev,
624                                ordinals->table1_addr + (ord << 2), &addr);
625 
626                 write_nic_dword(priv->net_dev, addr, *val);
627 
628                 *len = IPW_ORD_TAB_1_ENTRY_SIZE;
629 
630                 return 0;
631         }
632 
633         IPW_DEBUG_INFO("wrong table\n");
634         if (IS_ORDINAL_TABLE_TWO(ordinals, ord))
635                 return -EINVAL;
636 
637         return -EINVAL;
638 }
639 
640 static char *snprint_line(char *buf, size_t count,
641                           const u8 * data, u32 len, u32 ofs)
642 {
643         int out, i, j, l;
644         char c;
645 
646         out = snprintf(buf, count, "%08X", ofs);
647 
648         for (l = 0, i = 0; i < 2; i++) {
649                 out += snprintf(buf + out, count - out, " ");
650                 for (j = 0; j < 8 && l < len; j++, l++)
651                         out += snprintf(buf + out, count - out, "%02X ",
652                                         data[(i * 8 + j)]);
653                 for (; j < 8; j++)
654                         out += snprintf(buf + out, count - out, "   ");
655         }
656 
657         out += snprintf(buf + out, count - out, " ");
658         for (l = 0, i = 0; i < 2; i++) {
659                 out += snprintf(buf + out, count - out, " ");
660                 for (j = 0; j < 8 && l < len; j++, l++) {
661                         c = data[(i * 8 + j)];
662                         if (!isascii(c) || !isprint(c))
663                                 c = '.';
664 
665                         out += snprintf(buf + out, count - out, "%c", c);
666                 }
667 
668                 for (; j < 8; j++)
669                         out += snprintf(buf + out, count - out, " ");
670         }
671 
672         return buf;
673 }
674 
675 static void printk_buf(int level, const u8 * data, u32 len)
676 {
677         char line[81];
678         u32 ofs = 0;
679         if (!(ipw2100_debug_level & level))
680                 return;
681 
682         while (len) {
683                 printk(KERN_DEBUG "%s\n",
684                        snprint_line(line, sizeof(line), &data[ofs],
685                                     min(len, 16U), ofs));
686                 ofs += 16;
687                 len -= min(len, 16U);
688         }
689 }
690 
691 #define MAX_RESET_BACKOFF 10
692 
693 static void schedule_reset(struct ipw2100_priv *priv)
694 {
695         unsigned long now = get_seconds();
696 
697         /* If we haven't received a reset request within the backoff period,
698          * then we can reset the backoff interval so this reset occurs
699          * immediately */
700         if (priv->reset_backoff &&
701             (now - priv->last_reset > priv->reset_backoff))
702                 priv->reset_backoff = 0;
703 
704         priv->last_reset = get_seconds();
705 
706         if (!(priv->status & STATUS_RESET_PENDING)) {
707                 IPW_DEBUG_INFO("%s: Scheduling firmware restart (%ds).\n",
708                                priv->net_dev->name, priv->reset_backoff);
709                 netif_carrier_off(priv->net_dev);
710                 netif_stop_queue(priv->net_dev);
711                 priv->status |= STATUS_RESET_PENDING;
712                 if (priv->reset_backoff)
713                         schedule_delayed_work(&priv->reset_work,
714                                               priv->reset_backoff * HZ);
715                 else
716                         schedule_delayed_work(&priv->reset_work, 0);
717 
718                 if (priv->reset_backoff < MAX_RESET_BACKOFF)
719                         priv->reset_backoff++;
720 
721                 wake_up_interruptible(&priv->wait_command_queue);
722         } else
723                 IPW_DEBUG_INFO("%s: Firmware restart already in progress.\n",
724                                priv->net_dev->name);
725 
726 }
727 
728 #define HOST_COMPLETE_TIMEOUT (2 * HZ)
729 static int ipw2100_hw_send_command(struct ipw2100_priv *priv,
730                                    struct host_command *cmd)
731 {
732         struct list_head *element;
733         struct ipw2100_tx_packet *packet;
734         unsigned long flags;
735         int err = 0;
736 
737         IPW_DEBUG_HC("Sending %s command (#%d), %d bytes\n",
738                      command_types[cmd->host_command], cmd->host_command,
739                      cmd->host_command_length);
740         printk_buf(IPW_DL_HC, (u8 *) cmd->host_command_parameters,
741                    cmd->host_command_length);
742 
743         spin_lock_irqsave(&priv->low_lock, flags);
744 
745         if (priv->fatal_error) {
746                 IPW_DEBUG_INFO
747                     ("Attempt to send command while hardware in fatal error condition.\n");
748                 err = -EIO;
749                 goto fail_unlock;
750         }
751 
752         if (!(priv->status & STATUS_RUNNING)) {
753                 IPW_DEBUG_INFO
754                     ("Attempt to send command while hardware is not running.\n");
755                 err = -EIO;
756                 goto fail_unlock;
757         }
758 
759         if (priv->status & STATUS_CMD_ACTIVE) {
760                 IPW_DEBUG_INFO
761                     ("Attempt to send command while another command is pending.\n");
762                 err = -EBUSY;
763                 goto fail_unlock;
764         }
765 
766         if (list_empty(&priv->msg_free_list)) {
767                 IPW_DEBUG_INFO("no available msg buffers\n");
768                 goto fail_unlock;
769         }
770 
771         priv->status |= STATUS_CMD_ACTIVE;
772         priv->messages_sent++;
773 
774         element = priv->msg_free_list.next;
775 
776         packet = list_entry(element, struct ipw2100_tx_packet, list);
777         packet->jiffy_start = jiffies;
778 
779         /* initialize the firmware command packet */
780         packet->info.c_struct.cmd->host_command_reg = cmd->host_command;
781         packet->info.c_struct.cmd->host_command_reg1 = cmd->host_command1;
782         packet->info.c_struct.cmd->host_command_len_reg =
783             cmd->host_command_length;
784         packet->info.c_struct.cmd->sequence = cmd->host_command_sequence;
785 
786         memcpy(packet->info.c_struct.cmd->host_command_params_reg,
787                cmd->host_command_parameters,
788                sizeof(packet->info.c_struct.cmd->host_command_params_reg));
789 
790         list_del(element);
791         DEC_STAT(&priv->msg_free_stat);
792 
793         list_add_tail(element, &priv->msg_pend_list);
794         INC_STAT(&priv->msg_pend_stat);
795 
796         ipw2100_tx_send_commands(priv);
797         ipw2100_tx_send_data(priv);
798 
799         spin_unlock_irqrestore(&priv->low_lock, flags);
800 
801         /*
802          * We must wait for this command to complete before another
803          * command can be sent...  but if we wait more than 3 seconds
804          * then there is a problem.
805          */
806 
807         err =
808             wait_event_interruptible_timeout(priv->wait_command_queue,
809                                              !(priv->
810                                                status & STATUS_CMD_ACTIVE),
811                                              HOST_COMPLETE_TIMEOUT);
812 
813         if (err == 0) {
814                 IPW_DEBUG_INFO("Command completion failed out after %dms.\n",
815                                1000 * (HOST_COMPLETE_TIMEOUT / HZ));
816                 priv->fatal_error = IPW2100_ERR_MSG_TIMEOUT;
817                 priv->status &= ~STATUS_CMD_ACTIVE;
818                 schedule_reset(priv);
819                 return -EIO;
820         }
821 
822         if (priv->fatal_error) {
823                 printk(KERN_WARNING DRV_NAME ": %s: firmware fatal error\n",
824                        priv->net_dev->name);
825                 return -EIO;
826         }
827 
828         /* !!!!! HACK TEST !!!!!
829          * When lots of debug trace statements are enabled, the driver
830          * doesn't seem to have as many firmware restart cycles...
831          *
832          * As a test, we're sticking in a 1/100s delay here */
833         schedule_timeout_uninterruptible(msecs_to_jiffies(10));
834 
835         return 0;
836 
837       fail_unlock:
838         spin_unlock_irqrestore(&priv->low_lock, flags);
839 
840         return err;
841 }
842 
843 /*
844  * Verify the values and data access of the hardware
845  * No locks needed or used.  No functions called.
846  */
847 static int ipw2100_verify(struct ipw2100_priv *priv)
848 {
849         u32 data1, data2;
850         u32 address;
851 
852         u32 val1 = 0x76543210;
853         u32 val2 = 0xFEDCBA98;
854 
855         /* Domain 0 check - all values should be DOA_DEBUG */
856         for (address = IPW_REG_DOA_DEBUG_AREA_START;
857              address < IPW_REG_DOA_DEBUG_AREA_END; address += sizeof(u32)) {
858                 read_register(priv->net_dev, address, &data1);
859                 if (data1 != IPW_DATA_DOA_DEBUG_VALUE)
860                         return -EIO;
861         }
862 
863         /* Domain 1 check - use arbitrary read/write compare  */
864         for (address = 0; address < 5; address++) {
865                 /* The memory area is not used now */
866                 write_register(priv->net_dev, IPW_REG_DOMAIN_1_OFFSET + 0x32,
867                                val1);
868                 write_register(priv->net_dev, IPW_REG_DOMAIN_1_OFFSET + 0x36,
869                                val2);
870                 read_register(priv->net_dev, IPW_REG_DOMAIN_1_OFFSET + 0x32,
871                               &data1);
872                 read_register(priv->net_dev, IPW_REG_DOMAIN_1_OFFSET + 0x36,
873                               &data2);
874                 if (val1 == data1 && val2 == data2)
875                         return 0;
876         }
877 
878         return -EIO;
879 }
880 
881 /*
882  *
883  * Loop until the CARD_DISABLED bit is the same value as the
884  * supplied parameter
885  *
886  * TODO: See if it would be more efficient to do a wait/wake
887  *       cycle and have the completion event trigger the wakeup
888  *
889  */
890 #define IPW_CARD_DISABLE_COMPLETE_WAIT              100 // 100 milli
891 static int ipw2100_wait_for_card_state(struct ipw2100_priv *priv, int state)
892 {
893         int i;
894         u32 card_state;
895         u32 len = sizeof(card_state);
896         int err;
897 
898         for (i = 0; i <= IPW_CARD_DISABLE_COMPLETE_WAIT * 1000; i += 50) {
899                 err = ipw2100_get_ordinal(priv, IPW_ORD_CARD_DISABLED,
900                                           &card_state, &len);
901                 if (err) {
902                         IPW_DEBUG_INFO("Query of CARD_DISABLED ordinal "
903                                        "failed.\n");
904                         return 0;
905                 }
906 
907                 /* We'll break out if either the HW state says it is
908                  * in the state we want, or if HOST_COMPLETE command
909                  * finishes */
910                 if ((card_state == state) ||
911                     ((priv->status & STATUS_ENABLED) ?
912                      IPW_HW_STATE_ENABLED : IPW_HW_STATE_DISABLED) == state) {
913                         if (state == IPW_HW_STATE_ENABLED)
914                                 priv->status |= STATUS_ENABLED;
915                         else
916                                 priv->status &= ~STATUS_ENABLED;
917 
918                         return 0;
919                 }
920 
921                 udelay(50);
922         }
923 
924         IPW_DEBUG_INFO("ipw2100_wait_for_card_state to %s state timed out\n",
925                        state ? "DISABLED" : "ENABLED");
926         return -EIO;
927 }
928 
929 /*********************************************************************
930     Procedure   :   sw_reset_and_clock
931     Purpose     :   Asserts s/w reset, asserts clock initialization
932                     and waits for clock stabilization
933  ********************************************************************/
934 static int sw_reset_and_clock(struct ipw2100_priv *priv)
935 {
936         int i;
937         u32 r;
938 
939         // assert s/w reset
940         write_register(priv->net_dev, IPW_REG_RESET_REG,
941                        IPW_AUX_HOST_RESET_REG_SW_RESET);
942 
943         // wait for clock stabilization
944         for (i = 0; i < 1000; i++) {
945                 udelay(IPW_WAIT_RESET_ARC_COMPLETE_DELAY);
946 
947                 // check clock ready bit
948                 read_register(priv->net_dev, IPW_REG_RESET_REG, &r);
949                 if (r & IPW_AUX_HOST_RESET_REG_PRINCETON_RESET)
950                         break;
951         }
952 
953         if (i == 1000)
954                 return -EIO;    // TODO: better error value
955 
956         /* set "initialization complete" bit to move adapter to
957          * D0 state */
958         write_register(priv->net_dev, IPW_REG_GP_CNTRL,
959                        IPW_AUX_HOST_GP_CNTRL_BIT_INIT_DONE);
960 
961         /* wait for clock stabilization */
962         for (i = 0; i < 10000; i++) {
963                 udelay(IPW_WAIT_CLOCK_STABILIZATION_DELAY * 4);
964 
965                 /* check clock ready bit */
966                 read_register(priv->net_dev, IPW_REG_GP_CNTRL, &r);
967                 if (r & IPW_AUX_HOST_GP_CNTRL_BIT_CLOCK_READY)
968                         break;
969         }
970 
971         if (i == 10000)
972                 return -EIO;    /* TODO: better error value */
973 
974         /* set D0 standby bit */
975         read_register(priv->net_dev, IPW_REG_GP_CNTRL, &r);
976         write_register(priv->net_dev, IPW_REG_GP_CNTRL,
977                        r | IPW_AUX_HOST_GP_CNTRL_BIT_HOST_ALLOWS_STANDBY);
978 
979         return 0;
980 }
981 
982 /*********************************************************************
983     Procedure   :   ipw2100_download_firmware
984     Purpose     :   Initiaze adapter after power on.
985                     The sequence is:
986                     1. assert s/w reset first!
987                     2. awake clocks & wait for clock stabilization
988                     3. hold ARC (don't ask me why...)
989                     4. load Dino ucode and reset/clock init again
990                     5. zero-out shared mem
991                     6. download f/w
992  *******************************************************************/
993 static int ipw2100_download_firmware(struct ipw2100_priv *priv)
994 {
995         u32 address;
996         int err;
997 
998 #ifndef CONFIG_PM
999         /* Fetch the firmware and microcode */
1000         struct ipw2100_fw ipw2100_firmware;
1001 #endif
1002 
1003         if (priv->fatal_error) {
1004                 IPW_DEBUG_ERROR("%s: ipw2100_download_firmware called after "
1005                                 "fatal error %d.  Interface must be brought down.\n",
1006                                 priv->net_dev->name, priv->fatal_error);
1007                 return -EINVAL;
1008         }
1009 #ifdef CONFIG_PM
1010         if (!ipw2100_firmware.version) {
1011                 err = ipw2100_get_firmware(priv, &ipw2100_firmware);
1012                 if (err) {
1013                         IPW_DEBUG_ERROR("%s: ipw2100_get_firmware failed: %d\n",
1014                                         priv->net_dev->name, err);
1015                         priv->fatal_error = IPW2100_ERR_FW_LOAD;
1016                         goto fail;
1017                 }
1018         }
1019 #else
1020         err = ipw2100_get_firmware(priv, &ipw2100_firmware);
1021         if (err) {
1022                 IPW_DEBUG_ERROR("%s: ipw2100_get_firmware failed: %d\n",
1023                                 priv->net_dev->name, err);
1024                 priv->fatal_error = IPW2100_ERR_FW_LOAD;
1025                 goto fail;
1026         }
1027 #endif
1028         priv->firmware_version = ipw2100_firmware.version;
1029 
1030         /* s/w reset and clock stabilization */
1031         err = sw_reset_and_clock(priv);
1032         if (err) {
1033                 IPW_DEBUG_ERROR("%s: sw_reset_and_clock failed: %d\n",
1034                                 priv->net_dev->name, err);
1035                 goto fail;
1036         }
1037 
1038         err = ipw2100_verify(priv);
1039         if (err) {
1040                 IPW_DEBUG_ERROR("%s: ipw2100_verify failed: %d\n",
1041                                 priv->net_dev->name, err);
1042                 goto fail;
1043         }
1044 
1045         /* Hold ARC */
1046         write_nic_dword(priv->net_dev,
1047                         IPW_INTERNAL_REGISTER_HALT_AND_RESET, 0x80000000);
1048 
1049         /* allow ARC to run */
1050         write_register(priv->net_dev, IPW_REG_RESET_REG, 0);
1051 
1052         /* load microcode */
1053         err = ipw2100_ucode_download(priv, &ipw2100_firmware);
1054         if (err) {
1055                 printk(KERN_ERR DRV_NAME ": %s: Error loading microcode: %d\n",
1056                        priv->net_dev->name, err);
1057                 goto fail;
1058         }
1059 
1060         /* release ARC */
1061         write_nic_dword(priv->net_dev,
1062                         IPW_INTERNAL_REGISTER_HALT_AND_RESET, 0x00000000);
1063 
1064         /* s/w reset and clock stabilization (again!!!) */
1065         err = sw_reset_and_clock(priv);
1066         if (err) {
1067                 printk(KERN_ERR DRV_NAME
1068                        ": %s: sw_reset_and_clock failed: %d\n",
1069                        priv->net_dev->name, err);
1070                 goto fail;
1071         }
1072 
1073         /* load f/w */
1074         err = ipw2100_fw_download(priv, &ipw2100_firmware);
1075         if (err) {
1076                 IPW_DEBUG_ERROR("%s: Error loading firmware: %d\n",
1077                                 priv->net_dev->name, err);
1078                 goto fail;
1079         }
1080 #ifndef CONFIG_PM
1081         /*
1082          * When the .resume method of the driver is called, the other
1083          * part of the system, i.e. the ide driver could still stay in
1084          * the suspend stage. This prevents us from loading the firmware
1085          * from the disk.  --YZ
1086          */
1087 
1088         /* free any storage allocated for firmware image */
1089         ipw2100_release_firmware(priv, &ipw2100_firmware);
1090 #endif
1091 
1092         /* zero out Domain 1 area indirectly (Si requirement) */
1093         for (address = IPW_HOST_FW_SHARED_AREA0;
1094              address < IPW_HOST_FW_SHARED_AREA0_END; address += 4)
1095                 write_nic_dword(priv->net_dev, address, 0);
1096         for (address = IPW_HOST_FW_SHARED_AREA1;
1097              address < IPW_HOST_FW_SHARED_AREA1_END; address += 4)
1098                 write_nic_dword(priv->net_dev, address, 0);
1099         for (address = IPW_HOST_FW_SHARED_AREA2;
1100              address < IPW_HOST_FW_SHARED_AREA2_END; address += 4)
1101                 write_nic_dword(priv->net_dev, address, 0);
1102         for (address = IPW_HOST_FW_SHARED_AREA3;
1103              address < IPW_HOST_FW_SHARED_AREA3_END; address += 4)
1104                 write_nic_dword(priv->net_dev, address, 0);
1105         for (address = IPW_HOST_FW_INTERRUPT_AREA;
1106              address < IPW_HOST_FW_INTERRUPT_AREA_END; address += 4)
1107                 write_nic_dword(priv->net_dev, address, 0);
1108 
1109         return 0;
1110 
1111       fail:
1112         ipw2100_release_firmware(priv, &ipw2100_firmware);
1113         return err;
1114 }
1115 
1116 static inline void ipw2100_enable_interrupts(struct ipw2100_priv *priv)
1117 {
1118         if (priv->status & STATUS_INT_ENABLED)
1119                 return;
1120         priv->status |= STATUS_INT_ENABLED;
1121         write_register(priv->net_dev, IPW_REG_INTA_MASK, IPW_INTERRUPT_MASK);
1122 }
1123 
1124 static inline void ipw2100_disable_interrupts(struct ipw2100_priv *priv)
1125 {
1126         if (!(priv->status & STATUS_INT_ENABLED))
1127                 return;
1128         priv->status &= ~STATUS_INT_ENABLED;
1129         write_register(priv->net_dev, IPW_REG_INTA_MASK, 0x0);
1130 }
1131 
1132 static void ipw2100_initialize_ordinals(struct ipw2100_priv *priv)
1133 {
1134         struct ipw2100_ordinals *ord = &priv->ordinals;
1135 
1136         IPW_DEBUG_INFO("enter\n");
1137 
1138         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_ORDINALS_TABLE_1,
1139                       &ord->table1_addr);
1140 
1141         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_ORDINALS_TABLE_2,
1142                       &ord->table2_addr);
1143 
1144         read_nic_dword(priv->net_dev, ord->table1_addr, &ord->table1_size);
1145         read_nic_dword(priv->net_dev, ord->table2_addr, &ord->table2_size);
1146 
1147         ord->table2_size &= 0x0000FFFF;
1148 
1149         IPW_DEBUG_INFO("table 1 size: %d\n", ord->table1_size);
1150         IPW_DEBUG_INFO("table 2 size: %d\n", ord->table2_size);
1151         IPW_DEBUG_INFO("exit\n");
1152 }
1153 
1154 static inline void ipw2100_hw_set_gpio(struct ipw2100_priv *priv)
1155 {
1156         u32 reg = 0;
1157         /*
1158          * Set GPIO 3 writable by FW; GPIO 1 writable
1159          * by driver and enable clock
1160          */
1161         reg = (IPW_BIT_GPIO_GPIO3_MASK | IPW_BIT_GPIO_GPIO1_ENABLE |
1162                IPW_BIT_GPIO_LED_OFF);
1163         write_register(priv->net_dev, IPW_REG_GPIO, reg);
1164 }
1165 
1166 static int rf_kill_active(struct ipw2100_priv *priv)
1167 {
1168 #define MAX_RF_KILL_CHECKS 5
1169 #define RF_KILL_CHECK_DELAY 40
1170 
1171         unsigned short value = 0;
1172         u32 reg = 0;
1173         int i;
1174 
1175         if (!(priv->hw_features & HW_FEATURE_RFKILL)) {
1176                 wiphy_rfkill_set_hw_state(priv->ieee->wdev.wiphy, false);
1177                 priv->status &= ~STATUS_RF_KILL_HW;
1178                 return 0;
1179         }
1180 
1181         for (i = 0; i < MAX_RF_KILL_CHECKS; i++) {
1182                 udelay(RF_KILL_CHECK_DELAY);
1183                 read_register(priv->net_dev, IPW_REG_GPIO, &reg);
1184                 value = (value << 1) | ((reg & IPW_BIT_GPIO_RF_KILL) ? 0 : 1);
1185         }
1186 
1187         if (value == 0) {
1188                 wiphy_rfkill_set_hw_state(priv->ieee->wdev.wiphy, true);
1189                 priv->status |= STATUS_RF_KILL_HW;
1190         } else {
1191                 wiphy_rfkill_set_hw_state(priv->ieee->wdev.wiphy, false);
1192                 priv->status &= ~STATUS_RF_KILL_HW;
1193         }
1194 
1195         return (value == 0);
1196 }
1197 
1198 static int ipw2100_get_hw_features(struct ipw2100_priv *priv)
1199 {
1200         u32 addr, len;
1201         u32 val;
1202 
1203         /*
1204          * EEPROM_SRAM_DB_START_ADDRESS using ordinal in ordinal table 1
1205          */
1206         len = sizeof(addr);
1207         if (ipw2100_get_ordinal
1208             (priv, IPW_ORD_EEPROM_SRAM_DB_BLOCK_START_ADDRESS, &addr, &len)) {
1209                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
1210                                __LINE__);
1211                 return -EIO;
1212         }
1213 
1214         IPW_DEBUG_INFO("EEPROM address: %08X\n", addr);
1215 
1216         /*
1217          * EEPROM version is the byte at offset 0xfd in firmware
1218          * We read 4 bytes, then shift out the byte we actually want */
1219         read_nic_dword(priv->net_dev, addr + 0xFC, &val);
1220         priv->eeprom_version = (val >> 24) & 0xFF;
1221         IPW_DEBUG_INFO("EEPROM version: %d\n", priv->eeprom_version);
1222 
1223         /*
1224          *  HW RF Kill enable is bit 0 in byte at offset 0x21 in firmware
1225          *
1226          *  notice that the EEPROM bit is reverse polarity, i.e.
1227          *     bit = 0  signifies HW RF kill switch is supported
1228          *     bit = 1  signifies HW RF kill switch is NOT supported
1229          */
1230         read_nic_dword(priv->net_dev, addr + 0x20, &val);
1231         if (!((val >> 24) & 0x01))
1232                 priv->hw_features |= HW_FEATURE_RFKILL;
1233 
1234         IPW_DEBUG_INFO("HW RF Kill: %ssupported.\n",
1235                        (priv->hw_features & HW_FEATURE_RFKILL) ? "" : "not ");
1236 
1237         return 0;
1238 }
1239 
1240 /*
1241  * Start firmware execution after power on and intialization
1242  * The sequence is:
1243  *  1. Release ARC
1244  *  2. Wait for f/w initialization completes;
1245  */
1246 static int ipw2100_start_adapter(struct ipw2100_priv *priv)
1247 {
1248         int i;
1249         u32 inta, inta_mask, gpio;
1250 
1251         IPW_DEBUG_INFO("enter\n");
1252 
1253         if (priv->status & STATUS_RUNNING)
1254                 return 0;
1255 
1256         /*
1257          * Initialize the hw - drive adapter to DO state by setting
1258          * init_done bit. Wait for clk_ready bit and Download
1259          * fw & dino ucode
1260          */
1261         if (ipw2100_download_firmware(priv)) {
1262                 printk(KERN_ERR DRV_NAME
1263                        ": %s: Failed to power on the adapter.\n",
1264                        priv->net_dev->name);
1265                 return -EIO;
1266         }
1267 
1268         /* Clear the Tx, Rx and Msg queues and the r/w indexes
1269          * in the firmware RBD and TBD ring queue */
1270         ipw2100_queues_initialize(priv);
1271 
1272         ipw2100_hw_set_gpio(priv);
1273 
1274         /* TODO -- Look at disabling interrupts here to make sure none
1275          * get fired during FW initialization */
1276 
1277         /* Release ARC - clear reset bit */
1278         write_register(priv->net_dev, IPW_REG_RESET_REG, 0);
1279 
1280         /* wait for f/w intialization complete */
1281         IPW_DEBUG_FW("Waiting for f/w initialization to complete...\n");
1282         i = 5000;
1283         do {
1284                 schedule_timeout_uninterruptible(msecs_to_jiffies(40));
1285                 /* Todo... wait for sync command ... */
1286 
1287                 read_register(priv->net_dev, IPW_REG_INTA, &inta);
1288 
1289                 /* check "init done" bit */
1290                 if (inta & IPW2100_INTA_FW_INIT_DONE) {
1291                         /* reset "init done" bit */
1292                         write_register(priv->net_dev, IPW_REG_INTA,
1293                                        IPW2100_INTA_FW_INIT_DONE);
1294                         break;
1295                 }
1296 
1297                 /* check error conditions : we check these after the firmware
1298                  * check so that if there is an error, the interrupt handler
1299                  * will see it and the adapter will be reset */
1300                 if (inta &
1301                     (IPW2100_INTA_FATAL_ERROR | IPW2100_INTA_PARITY_ERROR)) {
1302                         /* clear error conditions */
1303                         write_register(priv->net_dev, IPW_REG_INTA,
1304                                        IPW2100_INTA_FATAL_ERROR |
1305                                        IPW2100_INTA_PARITY_ERROR);
1306                 }
1307         } while (--i);
1308 
1309         /* Clear out any pending INTAs since we aren't supposed to have
1310          * interrupts enabled at this point... */
1311         read_register(priv->net_dev, IPW_REG_INTA, &inta);
1312         read_register(priv->net_dev, IPW_REG_INTA_MASK, &inta_mask);
1313         inta &= IPW_INTERRUPT_MASK;
1314         /* Clear out any pending interrupts */
1315         if (inta & inta_mask)
1316                 write_register(priv->net_dev, IPW_REG_INTA, inta);
1317 
1318         IPW_DEBUG_FW("f/w initialization complete: %s\n",
1319                      i ? "SUCCESS" : "FAILED");
1320 
1321         if (!i) {
1322                 printk(KERN_WARNING DRV_NAME
1323                        ": %s: Firmware did not initialize.\n",
1324                        priv->net_dev->name);
1325                 return -EIO;
1326         }
1327 
1328         /* allow firmware to write to GPIO1 & GPIO3 */
1329         read_register(priv->net_dev, IPW_REG_GPIO, &gpio);
1330 
1331         gpio |= (IPW_BIT_GPIO_GPIO1_MASK | IPW_BIT_GPIO_GPIO3_MASK);
1332 
1333         write_register(priv->net_dev, IPW_REG_GPIO, gpio);
1334 
1335         /* Ready to receive commands */
1336         priv->status |= STATUS_RUNNING;
1337 
1338         /* The adapter has been reset; we are not associated */
1339         priv->status &= ~(STATUS_ASSOCIATING | STATUS_ASSOCIATED);
1340 
1341         IPW_DEBUG_INFO("exit\n");
1342 
1343         return 0;
1344 }
1345 
1346 static inline void ipw2100_reset_fatalerror(struct ipw2100_priv *priv)
1347 {
1348         if (!priv->fatal_error)
1349                 return;
1350 
1351         priv->fatal_errors[priv->fatal_index++] = priv->fatal_error;
1352         priv->fatal_index %= IPW2100_ERROR_QUEUE;
1353         priv->fatal_error = 0;
1354 }
1355 
1356 /* NOTE: Our interrupt is disabled when this method is called */
1357 static int ipw2100_power_cycle_adapter(struct ipw2100_priv *priv)
1358 {
1359         u32 reg;
1360         int i;
1361 
1362         IPW_DEBUG_INFO("Power cycling the hardware.\n");
1363 
1364         ipw2100_hw_set_gpio(priv);
1365 
1366         /* Step 1. Stop Master Assert */
1367         write_register(priv->net_dev, IPW_REG_RESET_REG,
1368                        IPW_AUX_HOST_RESET_REG_STOP_MASTER);
1369 
1370         /* Step 2. Wait for stop Master Assert
1371          *         (not more than 50us, otherwise ret error */
1372         i = 5;
1373         do {
1374                 udelay(IPW_WAIT_RESET_MASTER_ASSERT_COMPLETE_DELAY);
1375                 read_register(priv->net_dev, IPW_REG_RESET_REG, &reg);
1376 
1377                 if (reg & IPW_AUX_HOST_RESET_REG_MASTER_DISABLED)
1378                         break;
1379         } while (--i);
1380 
1381         priv->status &= ~STATUS_RESET_PENDING;
1382 
1383         if (!i) {
1384                 IPW_DEBUG_INFO
1385                     ("exit - waited too long for master assert stop\n");
1386                 return -EIO;
1387         }
1388 
1389         write_register(priv->net_dev, IPW_REG_RESET_REG,
1390                        IPW_AUX_HOST_RESET_REG_SW_RESET);
1391 
1392         /* Reset any fatal_error conditions */
1393         ipw2100_reset_fatalerror(priv);
1394 
1395         /* At this point, the adapter is now stopped and disabled */
1396         priv->status &= ~(STATUS_RUNNING | STATUS_ASSOCIATING |
1397                           STATUS_ASSOCIATED | STATUS_ENABLED);
1398 
1399         return 0;
1400 }
1401 
1402 /*
1403  * Send the CARD_DISABLE_PHY_OFF command to the card to disable it
1404  *
1405  * After disabling, if the card was associated, a STATUS_ASSN_LOST will be sent.
1406  *
1407  * STATUS_CARD_DISABLE_NOTIFICATION will be sent regardless of
1408  * if STATUS_ASSN_LOST is sent.
1409  */
1410 static int ipw2100_hw_phy_off(struct ipw2100_priv *priv)
1411 {
1412 
1413 #define HW_PHY_OFF_LOOP_DELAY (HZ / 5000)
1414 
1415         struct host_command cmd = {
1416                 .host_command = CARD_DISABLE_PHY_OFF,
1417                 .host_command_sequence = 0,
1418                 .host_command_length = 0,
1419         };
1420         int err, i;
1421         u32 val1, val2;
1422 
1423         IPW_DEBUG_HC("CARD_DISABLE_PHY_OFF\n");
1424 
1425         /* Turn off the radio */
1426         err = ipw2100_hw_send_command(priv, &cmd);
1427         if (err)
1428                 return err;
1429 
1430         for (i = 0; i < 2500; i++) {
1431                 read_nic_dword(priv->net_dev, IPW2100_CONTROL_REG, &val1);
1432                 read_nic_dword(priv->net_dev, IPW2100_COMMAND, &val2);
1433 
1434                 if ((val1 & IPW2100_CONTROL_PHY_OFF) &&
1435                     (val2 & IPW2100_COMMAND_PHY_OFF))
1436                         return 0;
1437 
1438                 schedule_timeout_uninterruptible(HW_PHY_OFF_LOOP_DELAY);
1439         }
1440 
1441         return -EIO;
1442 }
1443 
1444 static int ipw2100_enable_adapter(struct ipw2100_priv *priv)
1445 {
1446         struct host_command cmd = {
1447                 .host_command = HOST_COMPLETE,
1448                 .host_command_sequence = 0,
1449                 .host_command_length = 0
1450         };
1451         int err = 0;
1452 
1453         IPW_DEBUG_HC("HOST_COMPLETE\n");
1454 
1455         if (priv->status & STATUS_ENABLED)
1456                 return 0;
1457 
1458         mutex_lock(&priv->adapter_mutex);
1459 
1460         if (rf_kill_active(priv)) {
1461                 IPW_DEBUG_HC("Command aborted due to RF kill active.\n");
1462                 goto fail_up;
1463         }
1464 
1465         err = ipw2100_hw_send_command(priv, &cmd);
1466         if (err) {
1467                 IPW_DEBUG_INFO("Failed to send HOST_COMPLETE command\n");
1468                 goto fail_up;
1469         }
1470 
1471         err = ipw2100_wait_for_card_state(priv, IPW_HW_STATE_ENABLED);
1472         if (err) {
1473                 IPW_DEBUG_INFO("%s: card not responding to init command.\n",
1474                                priv->net_dev->name);
1475                 goto fail_up;
1476         }
1477 
1478         if (priv->stop_hang_check) {
1479                 priv->stop_hang_check = 0;
1480                 schedule_delayed_work(&priv->hang_check, HZ / 2);
1481         }
1482 
1483       fail_up:
1484         mutex_unlock(&priv->adapter_mutex);
1485         return err;
1486 }
1487 
1488 static int ipw2100_hw_stop_adapter(struct ipw2100_priv *priv)
1489 {
1490 #define HW_POWER_DOWN_DELAY (msecs_to_jiffies(100))
1491 
1492         struct host_command cmd = {
1493                 .host_command = HOST_PRE_POWER_DOWN,
1494                 .host_command_sequence = 0,
1495                 .host_command_length = 0,
1496         };
1497         int err, i;
1498         u32 reg;
1499 
1500         if (!(priv->status & STATUS_RUNNING))
1501                 return 0;
1502 
1503         priv->status |= STATUS_STOPPING;
1504 
1505         /* We can only shut down the card if the firmware is operational.  So,
1506          * if we haven't reset since a fatal_error, then we can not send the
1507          * shutdown commands. */
1508         if (!priv->fatal_error) {
1509                 /* First, make sure the adapter is enabled so that the PHY_OFF
1510                  * command can shut it down */
1511                 ipw2100_enable_adapter(priv);
1512 
1513                 err = ipw2100_hw_phy_off(priv);
1514                 if (err)
1515                         printk(KERN_WARNING DRV_NAME
1516                                ": Error disabling radio %d\n", err);
1517 
1518                 /*
1519                  * If in D0-standby mode going directly to D3 may cause a
1520                  * PCI bus violation.  Therefore we must change out of the D0
1521                  * state.
1522                  *
1523                  * Sending the PREPARE_FOR_POWER_DOWN will restrict the
1524                  * hardware from going into standby mode and will transition
1525                  * out of D0-standby if it is already in that state.
1526                  *
1527                  * STATUS_PREPARE_POWER_DOWN_COMPLETE will be sent by the
1528                  * driver upon completion.  Once received, the driver can
1529                  * proceed to the D3 state.
1530                  *
1531                  * Prepare for power down command to fw.  This command would
1532                  * take HW out of D0-standby and prepare it for D3 state.
1533                  *
1534                  * Currently FW does not support event notification for this
1535                  * event. Therefore, skip waiting for it.  Just wait a fixed
1536                  * 100ms
1537                  */
1538                 IPW_DEBUG_HC("HOST_PRE_POWER_DOWN\n");
1539 
1540                 err = ipw2100_hw_send_command(priv, &cmd);
1541                 if (err)
1542                         printk(KERN_WARNING DRV_NAME ": "
1543                                "%s: Power down command failed: Error %d\n",
1544                                priv->net_dev->name, err);
1545                 else
1546                         schedule_timeout_uninterruptible(HW_POWER_DOWN_DELAY);
1547         }
1548 
1549         priv->status &= ~STATUS_ENABLED;
1550 
1551         /*
1552          * Set GPIO 3 writable by FW; GPIO 1 writable
1553          * by driver and enable clock
1554          */
1555         ipw2100_hw_set_gpio(priv);
1556 
1557         /*
1558          * Power down adapter.  Sequence:
1559          * 1. Stop master assert (RESET_REG[9]=1)
1560          * 2. Wait for stop master (RESET_REG[8]==1)
1561          * 3. S/w reset assert (RESET_REG[7] = 1)
1562          */
1563 
1564         /* Stop master assert */
1565         write_register(priv->net_dev, IPW_REG_RESET_REG,
1566                        IPW_AUX_HOST_RESET_REG_STOP_MASTER);
1567 
1568         /* wait stop master not more than 50 usec.
1569          * Otherwise return error. */
1570         for (i = 5; i > 0; i--) {
1571                 udelay(10);
1572 
1573                 /* Check master stop bit */
1574                 read_register(priv->net_dev, IPW_REG_RESET_REG, &reg);
1575 
1576                 if (reg & IPW_AUX_HOST_RESET_REG_MASTER_DISABLED)
1577                         break;
1578         }
1579 
1580         if (i == 0)
1581                 printk(KERN_WARNING DRV_NAME
1582                        ": %s: Could now power down adapter.\n",
1583                        priv->net_dev->name);
1584 
1585         /* assert s/w reset */
1586         write_register(priv->net_dev, IPW_REG_RESET_REG,
1587                        IPW_AUX_HOST_RESET_REG_SW_RESET);
1588 
1589         priv->status &= ~(STATUS_RUNNING | STATUS_STOPPING);
1590 
1591         return 0;
1592 }
1593 
1594 static int ipw2100_disable_adapter(struct ipw2100_priv *priv)
1595 {
1596         struct host_command cmd = {
1597                 .host_command = CARD_DISABLE,
1598                 .host_command_sequence = 0,
1599                 .host_command_length = 0
1600         };
1601         int err = 0;
1602 
1603         IPW_DEBUG_HC("CARD_DISABLE\n");
1604 
1605         if (!(priv->status & STATUS_ENABLED))
1606                 return 0;
1607 
1608         /* Make sure we clear the associated state */
1609         priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
1610 
1611         if (!priv->stop_hang_check) {
1612                 priv->stop_hang_check = 1;
1613                 cancel_delayed_work(&priv->hang_check);
1614         }
1615 
1616         mutex_lock(&priv->adapter_mutex);
1617 
1618         err = ipw2100_hw_send_command(priv, &cmd);
1619         if (err) {
1620                 printk(KERN_WARNING DRV_NAME
1621                        ": exit - failed to send CARD_DISABLE command\n");
1622                 goto fail_up;
1623         }
1624 
1625         err = ipw2100_wait_for_card_state(priv, IPW_HW_STATE_DISABLED);
1626         if (err) {
1627                 printk(KERN_WARNING DRV_NAME
1628                        ": exit - card failed to change to DISABLED\n");
1629                 goto fail_up;
1630         }
1631 
1632         IPW_DEBUG_INFO("TODO: implement scan state machine\n");
1633 
1634       fail_up:
1635         mutex_unlock(&priv->adapter_mutex);
1636         return err;
1637 }
1638 
1639 static int ipw2100_set_scan_options(struct ipw2100_priv *priv)
1640 {
1641         struct host_command cmd = {
1642                 .host_command = SET_SCAN_OPTIONS,
1643                 .host_command_sequence = 0,
1644                 .host_command_length = 8
1645         };
1646         int err;
1647 
1648         IPW_DEBUG_INFO("enter\n");
1649 
1650         IPW_DEBUG_SCAN("setting scan options\n");
1651 
1652         cmd.host_command_parameters[0] = 0;
1653 
1654         if (!(priv->config & CFG_ASSOCIATE))
1655                 cmd.host_command_parameters[0] |= IPW_SCAN_NOASSOCIATE;
1656         if ((priv->ieee->sec.flags & SEC_ENABLED) && priv->ieee->sec.enabled)
1657                 cmd.host_command_parameters[0] |= IPW_SCAN_MIXED_CELL;
1658         if (priv->config & CFG_PASSIVE_SCAN)
1659                 cmd.host_command_parameters[0] |= IPW_SCAN_PASSIVE;
1660 
1661         cmd.host_command_parameters[1] = priv->channel_mask;
1662 
1663         err = ipw2100_hw_send_command(priv, &cmd);
1664 
1665         IPW_DEBUG_HC("SET_SCAN_OPTIONS 0x%04X\n",
1666                      cmd.host_command_parameters[0]);
1667 
1668         return err;
1669 }
1670 
1671 static int ipw2100_start_scan(struct ipw2100_priv *priv)
1672 {
1673         struct host_command cmd = {
1674                 .host_command = BROADCAST_SCAN,
1675                 .host_command_sequence = 0,
1676                 .host_command_length = 4
1677         };
1678         int err;
1679 
1680         IPW_DEBUG_HC("START_SCAN\n");
1681 
1682         cmd.host_command_parameters[0] = 0;
1683 
1684         /* No scanning if in monitor mode */
1685         if (priv->ieee->iw_mode == IW_MODE_MONITOR)
1686                 return 1;
1687 
1688         if (priv->status & STATUS_SCANNING) {
1689                 IPW_DEBUG_SCAN("Scan requested while already in scan...\n");
1690                 return 0;
1691         }
1692 
1693         IPW_DEBUG_INFO("enter\n");
1694 
1695         /* Not clearing here; doing so makes iwlist always return nothing...
1696          *
1697          * We should modify the table logic to use aging tables vs. clearing
1698          * the table on each scan start.
1699          */
1700         IPW_DEBUG_SCAN("starting scan\n");
1701 
1702         priv->status |= STATUS_SCANNING;
1703         err = ipw2100_hw_send_command(priv, &cmd);
1704         if (err)
1705                 priv->status &= ~STATUS_SCANNING;
1706 
1707         IPW_DEBUG_INFO("exit\n");
1708 
1709         return err;
1710 }
1711 
1712 static const struct libipw_geo ipw_geos[] = {
1713         {                       /* Restricted */
1714          "---",
1715          .bg_channels = 14,
1716          .bg = {{2412, 1}, {2417, 2}, {2422, 3},
1717                 {2427, 4}, {2432, 5}, {2437, 6},
1718                 {2442, 7}, {2447, 8}, {2452, 9},
1719                 {2457, 10}, {2462, 11}, {2467, 12},
1720                 {2472, 13}, {2484, 14}},
1721          },
1722 };
1723 
1724 static int ipw2100_up(struct ipw2100_priv *priv, int deferred)
1725 {
1726         unsigned long flags;
1727         int rc = 0;
1728         u32 lock;
1729         u32 ord_len = sizeof(lock);
1730 
1731         /* Age scan list entries found before suspend */
1732         if (priv->suspend_time) {
1733                 libipw_networks_age(priv->ieee, priv->suspend_time);
1734                 priv->suspend_time = 0;
1735         }
1736 
1737         /* Quiet if manually disabled. */
1738         if (priv->status & STATUS_RF_KILL_SW) {
1739                 IPW_DEBUG_INFO("%s: Radio is disabled by Manual Disable "
1740                                "switch\n", priv->net_dev->name);
1741                 return 0;
1742         }
1743 
1744         /* the ipw2100 hardware really doesn't want power management delays
1745          * longer than 175usec
1746          */
1747         pm_qos_update_request(&ipw2100_pm_qos_req, 175);
1748 
1749         /* If the interrupt is enabled, turn it off... */
1750         spin_lock_irqsave(&priv->low_lock, flags);
1751         ipw2100_disable_interrupts(priv);
1752 
1753         /* Reset any fatal_error conditions */
1754         ipw2100_reset_fatalerror(priv);
1755         spin_unlock_irqrestore(&priv->low_lock, flags);
1756 
1757         if (priv->status & STATUS_POWERED ||
1758             (priv->status & STATUS_RESET_PENDING)) {
1759                 /* Power cycle the card ... */
1760                 if (ipw2100_power_cycle_adapter(priv)) {
1761                         printk(KERN_WARNING DRV_NAME
1762                                ": %s: Could not cycle adapter.\n",
1763                                priv->net_dev->name);
1764                         rc = 1;
1765                         goto exit;
1766                 }
1767         } else
1768                 priv->status |= STATUS_POWERED;
1769 
1770         /* Load the firmware, start the clocks, etc. */
1771         if (ipw2100_start_adapter(priv)) {
1772                 printk(KERN_ERR DRV_NAME
1773                        ": %s: Failed to start the firmware.\n",
1774                        priv->net_dev->name);
1775                 rc = 1;
1776                 goto exit;
1777         }
1778 
1779         ipw2100_initialize_ordinals(priv);
1780 
1781         /* Determine capabilities of this particular HW configuration */
1782         if (ipw2100_get_hw_features(priv)) {
1783                 printk(KERN_ERR DRV_NAME
1784                        ": %s: Failed to determine HW features.\n",
1785                        priv->net_dev->name);
1786                 rc = 1;
1787                 goto exit;
1788         }
1789 
1790         /* Initialize the geo */
1791         libipw_set_geo(priv->ieee, &ipw_geos[0]);
1792         priv->ieee->freq_band = LIBIPW_24GHZ_BAND;
1793 
1794         lock = LOCK_NONE;
1795         if (ipw2100_set_ordinal(priv, IPW_ORD_PERS_DB_LOCK, &lock, &ord_len)) {
1796                 printk(KERN_ERR DRV_NAME
1797                        ": %s: Failed to clear ordinal lock.\n",
1798                        priv->net_dev->name);
1799                 rc = 1;
1800                 goto exit;
1801         }
1802 
1803         priv->status &= ~STATUS_SCANNING;
1804 
1805         if (rf_kill_active(priv)) {
1806                 printk(KERN_INFO "%s: Radio is disabled by RF switch.\n",
1807                        priv->net_dev->name);
1808 
1809                 if (priv->stop_rf_kill) {
1810                         priv->stop_rf_kill = 0;
1811                         schedule_delayed_work(&priv->rf_kill,
1812                                               round_jiffies_relative(HZ));
1813                 }
1814 
1815                 deferred = 1;
1816         }
1817 
1818         /* Turn on the interrupt so that commands can be processed */
1819         ipw2100_enable_interrupts(priv);
1820 
1821         /* Send all of the commands that must be sent prior to
1822          * HOST_COMPLETE */
1823         if (ipw2100_adapter_setup(priv)) {
1824                 printk(KERN_ERR DRV_NAME ": %s: Failed to start the card.\n",
1825                        priv->net_dev->name);
1826                 rc = 1;
1827                 goto exit;
1828         }
1829 
1830         if (!deferred) {
1831                 /* Enable the adapter - sends HOST_COMPLETE */
1832                 if (ipw2100_enable_adapter(priv)) {
1833                         printk(KERN_ERR DRV_NAME ": "
1834                                "%s: failed in call to enable adapter.\n",
1835                                priv->net_dev->name);
1836                         ipw2100_hw_stop_adapter(priv);
1837                         rc = 1;
1838                         goto exit;
1839                 }
1840 
1841                 /* Start a scan . . . */
1842                 ipw2100_set_scan_options(priv);
1843                 ipw2100_start_scan(priv);
1844         }
1845 
1846       exit:
1847         return rc;
1848 }
1849 
1850 static void ipw2100_down(struct ipw2100_priv *priv)
1851 {
1852         unsigned long flags;
1853         union iwreq_data wrqu = {
1854                 .ap_addr = {
1855                             .sa_family = ARPHRD_ETHER}
1856         };
1857         int associated = priv->status & STATUS_ASSOCIATED;
1858 
1859         /* Kill the RF switch timer */
1860         if (!priv->stop_rf_kill) {
1861                 priv->stop_rf_kill = 1;
1862                 cancel_delayed_work(&priv->rf_kill);
1863         }
1864 
1865         /* Kill the firmware hang check timer */
1866         if (!priv->stop_hang_check) {
1867                 priv->stop_hang_check = 1;
1868                 cancel_delayed_work(&priv->hang_check);
1869         }
1870 
1871         /* Kill any pending resets */
1872         if (priv->status & STATUS_RESET_PENDING)
1873                 cancel_delayed_work(&priv->reset_work);
1874 
1875         /* Make sure the interrupt is on so that FW commands will be
1876          * processed correctly */
1877         spin_lock_irqsave(&priv->low_lock, flags);
1878         ipw2100_enable_interrupts(priv);
1879         spin_unlock_irqrestore(&priv->low_lock, flags);
1880 
1881         if (ipw2100_hw_stop_adapter(priv))
1882                 printk(KERN_ERR DRV_NAME ": %s: Error stopping adapter.\n",
1883                        priv->net_dev->name);
1884 
1885         /* Do not disable the interrupt until _after_ we disable
1886          * the adaptor.  Otherwise the CARD_DISABLE command will never
1887          * be ack'd by the firmware */
1888         spin_lock_irqsave(&priv->low_lock, flags);
1889         ipw2100_disable_interrupts(priv);
1890         spin_unlock_irqrestore(&priv->low_lock, flags);
1891 
1892         pm_qos_update_request(&ipw2100_pm_qos_req, PM_QOS_DEFAULT_VALUE);
1893 
1894         /* We have to signal any supplicant if we are disassociating */
1895         if (associated)
1896                 wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL);
1897 
1898         priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
1899         netif_carrier_off(priv->net_dev);
1900         netif_stop_queue(priv->net_dev);
1901 }
1902 
1903 static int ipw2100_wdev_init(struct net_device *dev)
1904 {
1905         struct ipw2100_priv *priv = libipw_priv(dev);
1906         const struct libipw_geo *geo = libipw_get_geo(priv->ieee);
1907         struct wireless_dev *wdev = &priv->ieee->wdev;
1908         int i;
1909 
1910         memcpy(wdev->wiphy->perm_addr, priv->mac_addr, ETH_ALEN);
1911 
1912         /* fill-out priv->ieee->bg_band */
1913         if (geo->bg_channels) {
1914                 struct ieee80211_supported_band *bg_band = &priv->ieee->bg_band;
1915 
1916                 bg_band->band = IEEE80211_BAND_2GHZ;
1917                 bg_band->n_channels = geo->bg_channels;
1918                 bg_band->channels = kcalloc(geo->bg_channels,
1919                                             sizeof(struct ieee80211_channel),
1920                                             GFP_KERNEL);
1921                 if (!bg_band->channels) {
1922                         ipw2100_down(priv);
1923                         return -ENOMEM;
1924                 }
1925                 /* translate geo->bg to bg_band.channels */
1926                 for (i = 0; i < geo->bg_channels; i++) {
1927                         bg_band->channels[i].band = IEEE80211_BAND_2GHZ;
1928                         bg_band->channels[i].center_freq = geo->bg[i].freq;
1929                         bg_band->channels[i].hw_value = geo->bg[i].channel;
1930                         bg_band->channels[i].max_power = geo->bg[i].max_power;
1931                         if (geo->bg[i].flags & LIBIPW_CH_PASSIVE_ONLY)
1932                                 bg_band->channels[i].flags |=
1933                                         IEEE80211_CHAN_NO_IR;
1934                         if (geo->bg[i].flags & LIBIPW_CH_NO_IBSS)
1935                                 bg_band->channels[i].flags |=
1936                                         IEEE80211_CHAN_NO_IR;
1937                         if (geo->bg[i].flags & LIBIPW_CH_RADAR_DETECT)
1938                                 bg_band->channels[i].flags |=
1939                                         IEEE80211_CHAN_RADAR;
1940                         /* No equivalent for LIBIPW_CH_80211H_RULES,
1941                            LIBIPW_CH_UNIFORM_SPREADING, or
1942                            LIBIPW_CH_B_ONLY... */
1943                 }
1944                 /* point at bitrate info */
1945                 bg_band->bitrates = ipw2100_bg_rates;
1946                 bg_band->n_bitrates = RATE_COUNT;
1947 
1948                 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = bg_band;
1949         }
1950 
1951         wdev->wiphy->cipher_suites = ipw_cipher_suites;
1952         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(ipw_cipher_suites);
1953 
1954         set_wiphy_dev(wdev->wiphy, &priv->pci_dev->dev);
1955         if (wiphy_register(wdev->wiphy))
1956                 return -EIO;
1957         return 0;
1958 }
1959 
1960 static void ipw2100_reset_adapter(struct work_struct *work)
1961 {
1962         struct ipw2100_priv *priv =
1963                 container_of(work, struct ipw2100_priv, reset_work.work);
1964         unsigned long flags;
1965         union iwreq_data wrqu = {
1966                 .ap_addr = {
1967                             .sa_family = ARPHRD_ETHER}
1968         };
1969         int associated = priv->status & STATUS_ASSOCIATED;
1970 
1971         spin_lock_irqsave(&priv->low_lock, flags);
1972         IPW_DEBUG_INFO(": %s: Restarting adapter.\n", priv->net_dev->name);
1973         priv->resets++;
1974         priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
1975         priv->status |= STATUS_SECURITY_UPDATED;
1976 
1977         /* Force a power cycle even if interface hasn't been opened
1978          * yet */
1979         cancel_delayed_work(&priv->reset_work);
1980         priv->status |= STATUS_RESET_PENDING;
1981         spin_unlock_irqrestore(&priv->low_lock, flags);
1982 
1983         mutex_lock(&priv->action_mutex);
1984         /* stop timed checks so that they don't interfere with reset */
1985         priv->stop_hang_check = 1;
1986         cancel_delayed_work(&priv->hang_check);
1987 
1988         /* We have to signal any supplicant if we are disassociating */
1989         if (associated)
1990                 wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL);
1991 
1992         ipw2100_up(priv, 0);
1993         mutex_unlock(&priv->action_mutex);
1994 
1995 }
1996 
1997 static void isr_indicate_associated(struct ipw2100_priv *priv, u32 status)
1998 {
1999 
2000 #define MAC_ASSOCIATION_READ_DELAY (HZ)
2001         int ret;
2002         unsigned int len, essid_len;
2003         char essid[IW_ESSID_MAX_SIZE];
2004         u32 txrate;
2005         u32 chan;
2006         char *txratename;
2007         u8 bssid[ETH_ALEN];
2008         DECLARE_SSID_BUF(ssid);
2009 
2010         /*
2011          * TBD: BSSID is usually 00:00:00:00:00:00 here and not
2012          *      an actual MAC of the AP. Seems like FW sets this
2013          *      address too late. Read it later and expose through
2014          *      /proc or schedule a later task to query and update
2015          */
2016 
2017         essid_len = IW_ESSID_MAX_SIZE;
2018         ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_SSID,
2019                                   essid, &essid_len);
2020         if (ret) {
2021                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
2022                                __LINE__);
2023                 return;
2024         }
2025 
2026         len = sizeof(u32);
2027         ret = ipw2100_get_ordinal(priv, IPW_ORD_CURRENT_TX_RATE, &txrate, &len);
2028         if (ret) {
2029                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
2030                                __LINE__);
2031                 return;
2032         }
2033 
2034         len = sizeof(u32);
2035         ret = ipw2100_get_ordinal(priv, IPW_ORD_OUR_FREQ, &chan, &len);
2036         if (ret) {
2037                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
2038                                __LINE__);
2039                 return;
2040         }
2041         len = ETH_ALEN;
2042         ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID, bssid,
2043                                   &len);
2044         if (ret) {
2045                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
2046                                __LINE__);
2047                 return;
2048         }
2049         memcpy(priv->ieee->bssid, bssid, ETH_ALEN);
2050 
2051         switch (txrate) {
2052         case TX_RATE_1_MBIT:
2053                 txratename = "1Mbps";
2054                 break;
2055         case TX_RATE_2_MBIT:
2056                 txratename = "2Mbsp";
2057                 break;
2058         case TX_RATE_5_5_MBIT:
2059                 txratename = "5.5Mbps";
2060                 break;
2061         case TX_RATE_11_MBIT:
2062                 txratename = "11Mbps";
2063                 break;
2064         default:
2065                 IPW_DEBUG_INFO("Unknown rate: %d\n", txrate);
2066                 txratename = "unknown rate";
2067                 break;
2068         }
2069 
2070         IPW_DEBUG_INFO("%s: Associated with '%s' at %s, channel %d (BSSID=%pM)\n",
2071                        priv->net_dev->name, print_ssid(ssid, essid, essid_len),
2072                        txratename, chan, bssid);
2073 
2074         /* now we copy read ssid into dev */
2075         if (!(priv->config & CFG_STATIC_ESSID)) {
2076                 priv->essid_len = min((u8) essid_len, (u8) IW_ESSID_MAX_SIZE);
2077                 memcpy(priv->essid, essid, priv->essid_len);
2078         }
2079         priv->channel = chan;
2080         memcpy(priv->bssid, bssid, ETH_ALEN);
2081 
2082         priv->status |= STATUS_ASSOCIATING;
2083         priv->connect_start = get_seconds();
2084 
2085         schedule_delayed_work(&priv->wx_event_work, HZ / 10);
2086 }
2087 
2088 static int ipw2100_set_essid(struct ipw2100_priv *priv, char *essid,
2089                              int length, int batch_mode)
2090 {
2091         int ssid_len = min(length, IW_ESSID_MAX_SIZE);
2092         struct host_command cmd = {
2093                 .host_command = SSID,
2094                 .host_command_sequence = 0,
2095                 .host_command_length = ssid_len
2096         };
2097         int err;
2098         DECLARE_SSID_BUF(ssid);
2099 
2100         IPW_DEBUG_HC("SSID: '%s'\n", print_ssid(ssid, essid, ssid_len));
2101 
2102         if (ssid_len)
2103                 memcpy(cmd.host_command_parameters, essid, ssid_len);
2104 
2105         if (!batch_mode) {
2106                 err = ipw2100_disable_adapter(priv);
2107                 if (err)
2108                         return err;
2109         }
2110 
2111         /* Bug in FW currently doesn't honor bit 0 in SET_SCAN_OPTIONS to
2112          * disable auto association -- so we cheat by setting a bogus SSID */
2113         if (!ssid_len && !(priv->config & CFG_ASSOCIATE)) {
2114                 int i;
2115                 u8 *bogus = (u8 *) cmd.host_command_parameters;
2116                 for (i = 0; i < IW_ESSID_MAX_SIZE; i++)
2117                         bogus[i] = 0x18 + i;
2118                 cmd.host_command_length = IW_ESSID_MAX_SIZE;
2119         }
2120 
2121         /* NOTE:  We always send the SSID command even if the provided ESSID is
2122          * the same as what we currently think is set. */
2123 
2124         err = ipw2100_hw_send_command(priv, &cmd);
2125         if (!err) {
2126                 memset(priv->essid + ssid_len, 0, IW_ESSID_MAX_SIZE - ssid_len);
2127                 memcpy(priv->essid, essid, ssid_len);
2128                 priv->essid_len = ssid_len;
2129         }
2130 
2131         if (!batch_mode) {
2132                 if (ipw2100_enable_adapter(priv))
2133                         err = -EIO;
2134         }
2135 
2136         return err;
2137 }
2138 
2139 static void isr_indicate_association_lost(struct ipw2100_priv *priv, u32 status)
2140 {
2141         DECLARE_SSID_BUF(ssid);
2142 
2143         IPW_DEBUG(IPW_DL_NOTIF | IPW_DL_STATE | IPW_DL_ASSOC,
2144                   "disassociated: '%s' %pM\n",
2145                   print_ssid(ssid, priv->essid, priv->essid_len),
2146                   priv->bssid);
2147 
2148         priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
2149 
2150         if (priv->status & STATUS_STOPPING) {
2151                 IPW_DEBUG_INFO("Card is stopping itself, discard ASSN_LOST.\n");
2152                 return;
2153         }
2154 
2155         memset(priv->bssid, 0, ETH_ALEN);
2156         memset(priv->ieee->bssid, 0, ETH_ALEN);
2157 
2158         netif_carrier_off(priv->net_dev);
2159         netif_stop_queue(priv->net_dev);
2160 
2161         if (!(priv->status & STATUS_RUNNING))
2162                 return;
2163 
2164         if (priv->status & STATUS_SECURITY_UPDATED)
2165                 schedule_delayed_work(&priv->security_work, 0);
2166 
2167         schedule_delayed_work(&priv->wx_event_work, 0);
2168 }
2169 
2170 static void isr_indicate_rf_kill(struct ipw2100_priv *priv, u32 status)
2171 {
2172         IPW_DEBUG_INFO("%s: RF Kill state changed to radio OFF.\n",
2173                        priv->net_dev->name);
2174 
2175         /* RF_KILL is now enabled (else we wouldn't be here) */
2176         wiphy_rfkill_set_hw_state(priv->ieee->wdev.wiphy, true);
2177         priv->status |= STATUS_RF_KILL_HW;
2178 
2179         /* Make sure the RF Kill check timer is running */
2180         priv->stop_rf_kill = 0;
2181         mod_delayed_work(system_wq, &priv->rf_kill, round_jiffies_relative(HZ));
2182 }
2183 
2184 static void ipw2100_scan_event(struct work_struct *work)
2185 {
2186         struct ipw2100_priv *priv = container_of(work, struct ipw2100_priv,
2187                                                  scan_event.work);
2188         union iwreq_data wrqu;
2189 
2190         wrqu.data.length = 0;
2191         wrqu.data.flags = 0;
2192         wireless_send_event(priv->net_dev, SIOCGIWSCAN, &wrqu, NULL);
2193 }
2194 
2195 static void isr_scan_complete(struct ipw2100_priv *priv, u32 status)
2196 {
2197         IPW_DEBUG_SCAN("scan complete\n");
2198         /* Age the scan results... */
2199         priv->ieee->scans++;
2200         priv->status &= ~STATUS_SCANNING;
2201 
2202         /* Only userspace-requested scan completion events go out immediately */
2203         if (!priv->user_requested_scan) {
2204                 schedule_delayed_work(&priv->scan_event,
2205                                       round_jiffies_relative(msecs_to_jiffies(4000)));
2206         } else {
2207                 priv->user_requested_scan = 0;
2208                 mod_delayed_work(system_wq, &priv->scan_event, 0);
2209         }
2210 }
2211 
2212 #ifdef CONFIG_IPW2100_DEBUG
2213 #define IPW2100_HANDLER(v, f) { v, f, # v }
2214 struct ipw2100_status_indicator {
2215         int status;
2216         void (*cb) (struct ipw2100_priv * priv, u32 status);
2217         char *name;
2218 };
2219 #else
2220 #define IPW2100_HANDLER(v, f) { v, f }
2221 struct ipw2100_status_indicator {
2222         int status;
2223         void (*cb) (struct ipw2100_priv * priv, u32 status);
2224 };
2225 #endif                          /* CONFIG_IPW2100_DEBUG */
2226 
2227 static void isr_indicate_scanning(struct ipw2100_priv *priv, u32 status)
2228 {
2229         IPW_DEBUG_SCAN("Scanning...\n");
2230         priv->status |= STATUS_SCANNING;
2231 }
2232 
2233 static const struct ipw2100_status_indicator status_handlers[] = {
2234         IPW2100_HANDLER(IPW_STATE_INITIALIZED, NULL),
2235         IPW2100_HANDLER(IPW_STATE_COUNTRY_FOUND, NULL),
2236         IPW2100_HANDLER(IPW_STATE_ASSOCIATED, isr_indicate_associated),
2237         IPW2100_HANDLER(IPW_STATE_ASSN_LOST, isr_indicate_association_lost),
2238         IPW2100_HANDLER(IPW_STATE_ASSN_CHANGED, NULL),
2239         IPW2100_HANDLER(IPW_STATE_SCAN_COMPLETE, isr_scan_complete),
2240         IPW2100_HANDLER(IPW_STATE_ENTERED_PSP, NULL),
2241         IPW2100_HANDLER(IPW_STATE_LEFT_PSP, NULL),
2242         IPW2100_HANDLER(IPW_STATE_RF_KILL, isr_indicate_rf_kill),
2243         IPW2100_HANDLER(IPW_STATE_DISABLED, NULL),
2244         IPW2100_HANDLER(IPW_STATE_POWER_DOWN, NULL),
2245         IPW2100_HANDLER(IPW_STATE_SCANNING, isr_indicate_scanning),
2246         IPW2100_HANDLER(-1, NULL)
2247 };
2248 
2249 static void isr_status_change(struct ipw2100_priv *priv, int status)
2250 {
2251         int i;
2252 
2253         if (status == IPW_STATE_SCANNING &&
2254             priv->status & STATUS_ASSOCIATED &&
2255             !(priv->status & STATUS_SCANNING)) {
2256                 IPW_DEBUG_INFO("Scan detected while associated, with "
2257                                "no scan request.  Restarting firmware.\n");
2258 
2259                 /* Wake up any sleeping jobs */
2260                 schedule_reset(priv);
2261         }
2262 
2263         for (i = 0; status_handlers[i].status != -1; i++) {
2264                 if (status == status_handlers[i].status) {
2265                         IPW_DEBUG_NOTIF("Status change: %s\n",
2266                                         status_handlers[i].name);
2267                         if (status_handlers[i].cb)
2268                                 status_handlers[i].cb(priv, status);
2269                         priv->wstats.status = status;
2270                         return;
2271                 }
2272         }
2273 
2274         IPW_DEBUG_NOTIF("unknown status received: %04x\n", status);
2275 }
2276 
2277 static void isr_rx_complete_command(struct ipw2100_priv *priv,
2278                                     struct ipw2100_cmd_header *cmd)
2279 {
2280 #ifdef CONFIG_IPW2100_DEBUG
2281         if (cmd->host_command_reg < ARRAY_SIZE(command_types)) {
2282                 IPW_DEBUG_HC("Command completed '%s (%d)'\n",
2283                              command_types[cmd->host_command_reg],
2284                              cmd->host_command_reg);
2285         }
2286 #endif
2287         if (cmd->host_command_reg == HOST_COMPLETE)
2288                 priv->status |= STATUS_ENABLED;
2289 
2290         if (cmd->host_command_reg == CARD_DISABLE)
2291                 priv->status &= ~STATUS_ENABLED;
2292 
2293         priv->status &= ~STATUS_CMD_ACTIVE;
2294 
2295         wake_up_interruptible(&priv->wait_command_queue);
2296 }
2297 
2298 #ifdef CONFIG_IPW2100_DEBUG
2299 static const char *frame_types[] = {
2300         "COMMAND_STATUS_VAL",
2301         "STATUS_CHANGE_VAL",
2302         "P80211_DATA_VAL",
2303         "P8023_DATA_VAL",
2304         "HOST_NOTIFICATION_VAL"
2305 };
2306 #endif
2307 
2308 static int ipw2100_alloc_skb(struct ipw2100_priv *priv,
2309                                     struct ipw2100_rx_packet *packet)
2310 {
2311         packet->skb = dev_alloc_skb(sizeof(struct ipw2100_rx));
2312         if (!packet->skb)
2313                 return -ENOMEM;
2314 
2315         packet->rxp = (struct ipw2100_rx *)packet->skb->data;
2316         packet->dma_addr = pci_map_single(priv->pci_dev, packet->skb->data,
2317                                           sizeof(struct ipw2100_rx),
2318                                           PCI_DMA_FROMDEVICE);
2319         /* NOTE: pci_map_single does not return an error code, and 0 is a valid
2320          *       dma_addr */
2321 
2322         return 0;
2323 }
2324 
2325 #define SEARCH_ERROR   0xffffffff
2326 #define SEARCH_FAIL    0xfffffffe
2327 #define SEARCH_SUCCESS 0xfffffff0
2328 #define SEARCH_DISCARD 0
2329 #define SEARCH_SNAPSHOT 1
2330 
2331 #define SNAPSHOT_ADDR(ofs) (priv->snapshot[((ofs) >> 12) & 0xff] + ((ofs) & 0xfff))
2332 static void ipw2100_snapshot_free(struct ipw2100_priv *priv)
2333 {
2334         int i;
2335         if (!priv->snapshot[0])
2336                 return;
2337         for (i = 0; i < 0x30; i++)
2338                 kfree(priv->snapshot[i]);
2339         priv->snapshot[0] = NULL;
2340 }
2341 
2342 #ifdef IPW2100_DEBUG_C3
2343 static int ipw2100_snapshot_alloc(struct ipw2100_priv *priv)
2344 {
2345         int i;
2346         if (priv->snapshot[0])
2347                 return 1;
2348         for (i = 0; i < 0x30; i++) {
2349                 priv->snapshot[i] = kmalloc(0x1000, GFP_ATOMIC);
2350                 if (!priv->snapshot[i]) {
2351                         IPW_DEBUG_INFO("%s: Error allocating snapshot "
2352                                        "buffer %d\n", priv->net_dev->name, i);
2353                         while (i > 0)
2354                                 kfree(priv->snapshot[--i]);
2355                         priv->snapshot[0] = NULL;
2356                         return 0;
2357                 }
2358         }
2359 
2360         return 1;
2361 }
2362 
2363 static u32 ipw2100_match_buf(struct ipw2100_priv *priv, u8 * in_buf,
2364                                     size_t len, int mode)
2365 {
2366         u32 i, j;
2367         u32 tmp;
2368         u8 *s, *d;
2369         u32 ret;
2370 
2371         s = in_buf;
2372         if (mode == SEARCH_SNAPSHOT) {
2373                 if (!ipw2100_snapshot_alloc(priv))
2374                         mode = SEARCH_DISCARD;
2375         }
2376 
2377         for (ret = SEARCH_FAIL, i = 0; i < 0x30000; i += 4) {
2378                 read_nic_dword(priv->net_dev, i, &tmp);
2379                 if (mode == SEARCH_SNAPSHOT)
2380                         *(u32 *) SNAPSHOT_ADDR(i) = tmp;
2381                 if (ret == SEARCH_FAIL) {
2382                         d = (u8 *) & tmp;
2383                         for (j = 0; j < 4; j++) {
2384                                 if (*s != *d) {
2385                                         s = in_buf;
2386                                         continue;
2387                                 }
2388 
2389                                 s++;
2390                                 d++;
2391 
2392                                 if ((s - in_buf) == len)
2393                                         ret = (i + j) - len + 1;
2394                         }
2395                 } else if (mode == SEARCH_DISCARD)
2396                         return ret;
2397         }
2398 
2399         return ret;
2400 }
2401 #endif
2402 
2403 /*
2404  *
2405  * 0) Disconnect the SKB from the firmware (just unmap)
2406  * 1) Pack the ETH header into the SKB
2407  * 2) Pass the SKB to the network stack
2408  *
2409  * When packet is provided by the firmware, it contains the following:
2410  *
2411  * .  libipw_hdr
2412  * .  libipw_snap_hdr
2413  *
2414  * The size of the constructed ethernet
2415  *
2416  */
2417 #ifdef IPW2100_RX_DEBUG
2418 static u8 packet_data[IPW_RX_NIC_BUFFER_LENGTH];
2419 #endif
2420 
2421 static void ipw2100_corruption_detected(struct ipw2100_priv *priv, int i)
2422 {
2423 #ifdef IPW2100_DEBUG_C3
2424         struct ipw2100_status *status = &priv->status_queue.drv[i];
2425         u32 match, reg;
2426         int j;
2427 #endif
2428 
2429         IPW_DEBUG_INFO(": PCI latency error detected at 0x%04zX.\n",
2430                        i * sizeof(struct ipw2100_status));
2431 
2432 #ifdef IPW2100_DEBUG_C3
2433         /* Halt the firmware so we can get a good image */
2434         write_register(priv->net_dev, IPW_REG_RESET_REG,
2435                        IPW_AUX_HOST_RESET_REG_STOP_MASTER);
2436         j = 5;
2437         do {
2438                 udelay(IPW_WAIT_RESET_MASTER_ASSERT_COMPLETE_DELAY);
2439                 read_register(priv->net_dev, IPW_REG_RESET_REG, &reg);
2440 
2441                 if (reg & IPW_AUX_HOST_RESET_REG_MASTER_DISABLED)
2442                         break;
2443         } while (j--);
2444 
2445         match = ipw2100_match_buf(priv, (u8 *) status,
2446                                   sizeof(struct ipw2100_status),
2447                                   SEARCH_SNAPSHOT);
2448         if (match < SEARCH_SUCCESS)
2449                 IPW_DEBUG_INFO("%s: DMA status match in Firmware at "
2450                                "offset 0x%06X, length %d:\n",
2451                                priv->net_dev->name, match,
2452                                sizeof(struct ipw2100_status));
2453         else
2454                 IPW_DEBUG_INFO("%s: No DMA status match in "
2455                                "Firmware.\n", priv->net_dev->name);
2456 
2457         printk_buf((u8 *) priv->status_queue.drv,
2458                    sizeof(struct ipw2100_status) * RX_QUEUE_LENGTH);
2459 #endif
2460 
2461         priv->fatal_error = IPW2100_ERR_C3_CORRUPTION;
2462         priv->net_dev->stats.rx_errors++;
2463         schedule_reset(priv);
2464 }
2465 
2466 static void isr_rx(struct ipw2100_priv *priv, int i,
2467                           struct libipw_rx_stats *stats)
2468 {
2469         struct net_device *dev = priv->net_dev;
2470         struct ipw2100_status *status = &priv->status_queue.drv[i];
2471         struct ipw2100_rx_packet *packet = &priv->rx_buffers[i];
2472 
2473         IPW_DEBUG_RX("Handler...\n");
2474 
2475         if (unlikely(status->frame_size > skb_tailroom(packet->skb))) {
2476                 IPW_DEBUG_INFO("%s: frame_size (%u) > skb_tailroom (%u)!"
2477                                "  Dropping.\n",
2478                                dev->name,
2479                                status->frame_size, skb_tailroom(packet->skb));
2480                 dev->stats.rx_errors++;
2481                 return;
2482         }
2483 
2484         if (unlikely(!netif_running(dev))) {
2485                 dev->stats.rx_errors++;
2486                 priv->wstats.discard.misc++;
2487                 IPW_DEBUG_DROP("Dropping packet while interface is not up.\n");
2488                 return;
2489         }
2490 
2491         if (unlikely(priv->ieee->iw_mode != IW_MODE_MONITOR &&
2492                      !(priv->status & STATUS_ASSOCIATED))) {
2493                 IPW_DEBUG_DROP("Dropping packet while not associated.\n");
2494                 priv->wstats.discard.misc++;
2495                 return;
2496         }
2497 
2498         pci_unmap_single(priv->pci_dev,
2499                          packet->dma_addr,
2500                          sizeof(struct ipw2100_rx), PCI_DMA_FROMDEVICE);
2501 
2502         skb_put(packet->skb, status->frame_size);
2503 
2504 #ifdef IPW2100_RX_DEBUG
2505         /* Make a copy of the frame so we can dump it to the logs if
2506          * libipw_rx fails */
2507         skb_copy_from_linear_data(packet->skb, packet_data,
2508                                   min_t(u32, status->frame_size,
2509                                              IPW_RX_NIC_BUFFER_LENGTH));
2510 #endif
2511 
2512         if (!libipw_rx(priv->ieee, packet->skb, stats)) {
2513 #ifdef IPW2100_RX_DEBUG
2514                 IPW_DEBUG_DROP("%s: Non consumed packet:\n",
2515                                dev->name);
2516                 printk_buf(IPW_DL_DROP, packet_data, status->frame_size);
2517 #endif
2518                 dev->stats.rx_errors++;
2519 
2520                 /* libipw_rx failed, so it didn't free the SKB */
2521                 dev_kfree_skb_any(packet->skb);
2522                 packet->skb = NULL;
2523         }
2524 
2525         /* We need to allocate a new SKB and attach it to the RDB. */
2526         if (unlikely(ipw2100_alloc_skb(priv, packet))) {
2527                 printk(KERN_WARNING DRV_NAME ": "
2528                        "%s: Unable to allocate SKB onto RBD ring - disabling "
2529                        "adapter.\n", dev->name);
2530                 /* TODO: schedule adapter shutdown */
2531                 IPW_DEBUG_INFO("TODO: Shutdown adapter...\n");
2532         }
2533 
2534         /* Update the RDB entry */
2535         priv->rx_queue.drv[i].host_addr = packet->dma_addr;
2536 }
2537 
2538 #ifdef CONFIG_IPW2100_MONITOR
2539 
2540 static void isr_rx_monitor(struct ipw2100_priv *priv, int i,
2541                    struct libipw_rx_stats *stats)
2542 {
2543         struct net_device *dev = priv->net_dev;
2544         struct ipw2100_status *status = &priv->status_queue.drv[i];
2545         struct ipw2100_rx_packet *packet = &priv->rx_buffers[i];
2546 
2547         /* Magic struct that slots into the radiotap header -- no reason
2548          * to build this manually element by element, we can write it much
2549          * more efficiently than we can parse it. ORDER MATTERS HERE */
2550         struct ipw_rt_hdr {
2551                 struct ieee80211_radiotap_header rt_hdr;
2552                 s8 rt_dbmsignal; /* signal in dbM, kluged to signed */
2553         } *ipw_rt;
2554 
2555         IPW_DEBUG_RX("Handler...\n");
2556 
2557         if (unlikely(status->frame_size > skb_tailroom(packet->skb) -
2558                                 sizeof(struct ipw_rt_hdr))) {
2559                 IPW_DEBUG_INFO("%s: frame_size (%u) > skb_tailroom (%u)!"
2560                                "  Dropping.\n",
2561                                dev->name,
2562                                status->frame_size,
2563                                skb_tailroom(packet->skb));
2564                 dev->stats.rx_errors++;
2565                 return;
2566         }
2567 
2568         if (unlikely(!netif_running(dev))) {
2569                 dev->stats.rx_errors++;
2570                 priv->wstats.discard.misc++;
2571                 IPW_DEBUG_DROP("Dropping packet while interface is not up.\n");
2572                 return;
2573         }
2574 
2575         if (unlikely(priv->config & CFG_CRC_CHECK &&
2576                      status->flags & IPW_STATUS_FLAG_CRC_ERROR)) {
2577                 IPW_DEBUG_RX("CRC error in packet.  Dropping.\n");
2578                 dev->stats.rx_errors++;
2579                 return;
2580         }
2581 
2582         pci_unmap_single(priv->pci_dev, packet->dma_addr,
2583                          sizeof(struct ipw2100_rx), PCI_DMA_FROMDEVICE);
2584         memmove(packet->skb->data + sizeof(struct ipw_rt_hdr),
2585                 packet->skb->data, status->frame_size);
2586 
2587         ipw_rt = (struct ipw_rt_hdr *) packet->skb->data;
2588 
2589         ipw_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
2590         ipw_rt->rt_hdr.it_pad = 0; /* always good to zero */
2591         ipw_rt->rt_hdr.it_len = cpu_to_le16(sizeof(struct ipw_rt_hdr)); /* total hdr+data */
2592 
2593         ipw_rt->rt_hdr.it_present = cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
2594 
2595         ipw_rt->rt_dbmsignal = status->rssi + IPW2100_RSSI_TO_DBM;
2596 
2597         skb_put(packet->skb, status->frame_size + sizeof(struct ipw_rt_hdr));
2598 
2599         if (!libipw_rx(priv->ieee, packet->skb, stats)) {
2600                 dev->stats.rx_errors++;
2601 
2602                 /* libipw_rx failed, so it didn't free the SKB */
2603                 dev_kfree_skb_any(packet->skb);
2604                 packet->skb = NULL;
2605         }
2606 
2607         /* We need to allocate a new SKB and attach it to the RDB. */
2608         if (unlikely(ipw2100_alloc_skb(priv, packet))) {
2609                 IPW_DEBUG_WARNING(
2610                         "%s: Unable to allocate SKB onto RBD ring - disabling "
2611                         "adapter.\n", dev->name);
2612                 /* TODO: schedule adapter shutdown */
2613                 IPW_DEBUG_INFO("TODO: Shutdown adapter...\n");
2614         }
2615 
2616         /* Update the RDB entry */
2617         priv->rx_queue.drv[i].host_addr = packet->dma_addr;
2618 }
2619 
2620 #endif
2621 
2622 static int ipw2100_corruption_check(struct ipw2100_priv *priv, int i)
2623 {
2624         struct ipw2100_status *status = &priv->status_queue.drv[i];
2625         struct ipw2100_rx *u = priv->rx_buffers[i].rxp;
2626         u16 frame_type = status->status_fields & STATUS_TYPE_MASK;
2627 
2628         switch (frame_type) {
2629         case COMMAND_STATUS_VAL:
2630                 return (status->frame_size != sizeof(u->rx_data.command));
2631         case STATUS_CHANGE_VAL:
2632                 return (status->frame_size != sizeof(u->rx_data.status));
2633         case HOST_NOTIFICATION_VAL:
2634                 return (status->frame_size < sizeof(u->rx_data.notification));
2635         case P80211_DATA_VAL:
2636         case P8023_DATA_VAL:
2637 #ifdef CONFIG_IPW2100_MONITOR
2638                 return 0;
2639 #else
2640                 switch (WLAN_FC_GET_TYPE(le16_to_cpu(u->rx_data.header.frame_ctl))) {
2641                 case IEEE80211_FTYPE_MGMT:
2642                 case IEEE80211_FTYPE_CTL:
2643                         return 0;
2644                 case IEEE80211_FTYPE_DATA:
2645                         return (status->frame_size >
2646                                 IPW_MAX_802_11_PAYLOAD_LENGTH);
2647                 }
2648 #endif
2649         }
2650 
2651         return 1;
2652 }
2653 
2654 /*
2655  * ipw2100 interrupts are disabled at this point, and the ISR
2656  * is the only code that calls this method.  So, we do not need
2657  * to play with any locks.
2658  *
2659  * RX Queue works as follows:
2660  *
2661  * Read index - firmware places packet in entry identified by the
2662  *              Read index and advances Read index.  In this manner,
2663  *              Read index will always point to the next packet to
2664  *              be filled--but not yet valid.
2665  *
2666  * Write index - driver fills this entry with an unused RBD entry.
2667  *               This entry has not filled by the firmware yet.
2668  *
2669  * In between the W and R indexes are the RBDs that have been received
2670  * but not yet processed.
2671  *
2672  * The process of handling packets will start at WRITE + 1 and advance
2673  * until it reaches the READ index.
2674  *
2675  * The WRITE index is cached in the variable 'priv->rx_queue.next'.
2676  *
2677  */
2678 static void __ipw2100_rx_process(struct ipw2100_priv *priv)
2679 {
2680         struct ipw2100_bd_queue *rxq = &priv->rx_queue;
2681         struct ipw2100_status_queue *sq = &priv->status_queue;
2682         struct ipw2100_rx_packet *packet;
2683         u16 frame_type;
2684         u32 r, w, i, s;
2685         struct ipw2100_rx *u;
2686         struct libipw_rx_stats stats = {
2687                 .mac_time = jiffies,
2688         };
2689 
2690         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_RX_READ_INDEX, &r);
2691         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_RX_WRITE_INDEX, &w);
2692 
2693         if (r >= rxq->entries) {
2694                 IPW_DEBUG_RX("exit - bad read index\n");
2695                 return;
2696         }
2697 
2698         i = (rxq->next + 1) % rxq->entries;
2699         s = i;
2700         while (i != r) {
2701                 /* IPW_DEBUG_RX("r = %d : w = %d : processing = %d\n",
2702                    r, rxq->next, i); */
2703 
2704                 packet = &priv->rx_buffers[i];
2705 
2706                 /* Sync the DMA for the RX buffer so CPU is sure to get
2707                  * the correct values */
2708                 pci_dma_sync_single_for_cpu(priv->pci_dev, packet->dma_addr,
2709                                             sizeof(struct ipw2100_rx),
2710                                             PCI_DMA_FROMDEVICE);
2711 
2712                 if (unlikely(ipw2100_corruption_check(priv, i))) {
2713                         ipw2100_corruption_detected(priv, i);
2714                         goto increment;
2715                 }
2716 
2717                 u = packet->rxp;
2718                 frame_type = sq->drv[i].status_fields & STATUS_TYPE_MASK;
2719                 stats.rssi = sq->drv[i].rssi + IPW2100_RSSI_TO_DBM;
2720                 stats.len = sq->drv[i].frame_size;
2721 
2722                 stats.mask = 0;
2723                 if (stats.rssi != 0)
2724                         stats.mask |= LIBIPW_STATMASK_RSSI;
2725                 stats.freq = LIBIPW_24GHZ_BAND;
2726 
2727                 IPW_DEBUG_RX("%s: '%s' frame type received (%d).\n",
2728                              priv->net_dev->name, frame_types[frame_type],
2729                              stats.len);
2730 
2731                 switch (frame_type) {
2732                 case COMMAND_STATUS_VAL:
2733                         /* Reset Rx watchdog */
2734                         isr_rx_complete_command(priv, &u->rx_data.command);
2735                         break;
2736 
2737                 case STATUS_CHANGE_VAL:
2738                         isr_status_change(priv, u->rx_data.status);
2739                         break;
2740 
2741                 case P80211_DATA_VAL:
2742                 case P8023_DATA_VAL:
2743 #ifdef CONFIG_IPW2100_MONITOR
2744                         if (priv->ieee->iw_mode == IW_MODE_MONITOR) {
2745                                 isr_rx_monitor(priv, i, &stats);
2746                                 break;
2747                         }
2748 #endif
2749                         if (stats.len < sizeof(struct libipw_hdr_3addr))
2750                                 break;
2751                         switch (WLAN_FC_GET_TYPE(le16_to_cpu(u->rx_data.header.frame_ctl))) {
2752                         case IEEE80211_FTYPE_MGMT:
2753                                 libipw_rx_mgt(priv->ieee,
2754                                                  &u->rx_data.header, &stats);
2755                                 break;
2756 
2757                         case IEEE80211_FTYPE_CTL:
2758                                 break;
2759 
2760                         case IEEE80211_FTYPE_DATA:
2761                                 isr_rx(priv, i, &stats);
2762                                 break;
2763 
2764                         }
2765                         break;
2766                 }
2767 
2768               increment:
2769                 /* clear status field associated with this RBD */
2770                 rxq->drv[i].status.info.field = 0;
2771 
2772                 i = (i + 1) % rxq->entries;
2773         }
2774 
2775         if (i != s) {
2776                 /* backtrack one entry, wrapping to end if at 0 */
2777                 rxq->next = (i ? i : rxq->entries) - 1;
2778 
2779                 write_register(priv->net_dev,
2780                                IPW_MEM_HOST_SHARED_RX_WRITE_INDEX, rxq->next);
2781         }
2782 }
2783 
2784 /*
2785  * __ipw2100_tx_process
2786  *
2787  * This routine will determine whether the next packet on
2788  * the fw_pend_list has been processed by the firmware yet.
2789  *
2790  * If not, then it does nothing and returns.
2791  *
2792  * If so, then it removes the item from the fw_pend_list, frees
2793  * any associated storage, and places the item back on the
2794  * free list of its source (either msg_free_list or tx_free_list)
2795  *
2796  * TX Queue works as follows:
2797  *
2798  * Read index - points to the next TBD that the firmware will
2799  *              process.  The firmware will read the data, and once
2800  *              done processing, it will advance the Read index.
2801  *
2802  * Write index - driver fills this entry with an constructed TBD
2803  *               entry.  The Write index is not advanced until the
2804  *               packet has been configured.
2805  *
2806  * In between the W and R indexes are the TBDs that have NOT been
2807  * processed.  Lagging behind the R index are packets that have
2808  * been processed but have not been freed by the driver.
2809  *
2810  * In order to free old storage, an internal index will be maintained
2811  * that points to the next packet to be freed.  When all used
2812  * packets have been freed, the oldest index will be the same as the
2813  * firmware's read index.
2814  *
2815  * The OLDEST index is cached in the variable 'priv->tx_queue.oldest'
2816  *
2817  * Because the TBD structure can not contain arbitrary data, the
2818  * driver must keep an internal queue of cached allocations such that
2819  * it can put that data back into the tx_free_list and msg_free_list
2820  * for use by future command and data packets.
2821  *
2822  */
2823 static int __ipw2100_tx_process(struct ipw2100_priv *priv)
2824 {
2825         struct ipw2100_bd_queue *txq = &priv->tx_queue;
2826         struct ipw2100_bd *tbd;
2827         struct list_head *element;
2828         struct ipw2100_tx_packet *packet;
2829         int descriptors_used;
2830         int e, i;
2831         u32 r, w, frag_num = 0;
2832 
2833         if (list_empty(&priv->fw_pend_list))
2834                 return 0;
2835 
2836         element = priv->fw_pend_list.next;
2837 
2838         packet = list_entry(element, struct ipw2100_tx_packet, list);
2839         tbd = &txq->drv[packet->index];
2840 
2841         /* Determine how many TBD entries must be finished... */
2842         switch (packet->type) {
2843         case COMMAND:
2844                 /* COMMAND uses only one slot; don't advance */
2845                 descriptors_used = 1;
2846                 e = txq->oldest;
2847                 break;
2848 
2849         case DATA:
2850                 /* DATA uses two slots; advance and loop position. */
2851                 descriptors_used = tbd->num_fragments;
2852                 frag_num = tbd->num_fragments - 1;
2853                 e = txq->oldest + frag_num;
2854                 e %= txq->entries;
2855                 break;
2856 
2857         default:
2858                 printk(KERN_WARNING DRV_NAME ": %s: Bad fw_pend_list entry!\n",
2859                        priv->net_dev->name);
2860                 return 0;
2861         }
2862 
2863         /* if the last TBD is not done by NIC yet, then packet is
2864          * not ready to be released.
2865          *
2866          */
2867         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_TX_QUEUE_READ_INDEX,
2868                       &r);
2869         read_register(priv->net_dev, IPW_MEM_HOST_SHARED_TX_QUEUE_WRITE_INDEX,
2870                       &w);
2871         if (w != txq->next)
2872                 printk(KERN_WARNING DRV_NAME ": %s: write index mismatch\n",
2873                        priv->net_dev->name);
2874 
2875         /*
2876          * txq->next is the index of the last packet written txq->oldest is
2877          * the index of the r is the index of the next packet to be read by
2878          * firmware
2879          */
2880 
2881         /*
2882          * Quick graphic to help you visualize the following
2883          * if / else statement
2884          *
2885          * ===>|                     s---->|===============
2886          *                               e>|
2887          * | a | b | c | d | e | f | g | h | i | j | k | l
2888          *       r---->|
2889          *               w
2890          *
2891          * w - updated by driver
2892          * r - updated by firmware
2893          * s - start of oldest BD entry (txq->oldest)
2894          * e - end of oldest BD entry
2895          *
2896          */
2897         if (!((r <= w && (e < r || e >= w)) || (e < r && e >= w))) {
2898                 IPW_DEBUG_TX("exit - no processed packets ready to release.\n");
2899                 return 0;
2900         }
2901 
2902         list_del(element);
2903         DEC_STAT(&priv->fw_pend_stat);
2904 
2905 #ifdef CONFIG_IPW2100_DEBUG
2906         {
2907                 i = txq->oldest;
2908                 IPW_DEBUG_TX("TX%d V=%p P=%04X T=%04X L=%d\n", i,
2909                              &txq->drv[i],
2910                              (u32) (txq->nic + i * sizeof(struct ipw2100_bd)),
2911                              txq->drv[i].host_addr, txq->drv[i].buf_length);
2912 
2913                 if (packet->type == DATA) {
2914                         i = (i + 1) % txq->entries;
2915 
2916                         IPW_DEBUG_TX("TX%d V=%p P=%04X T=%04X L=%d\n", i,
2917                                      &txq->drv[i],
2918                                      (u32) (txq->nic + i *
2919                                             sizeof(struct ipw2100_bd)),
2920                                      (u32) txq->drv[i].host_addr,
2921                                      txq->drv[i].buf_length);
2922                 }
2923         }
2924 #endif
2925 
2926         switch (packet->type) {
2927         case DATA:
2928                 if (txq->drv[txq->oldest].status.info.fields.txType != 0)
2929                         printk(KERN_WARNING DRV_NAME ": %s: Queue mismatch.  "
2930                                "Expecting DATA TBD but pulled "
2931                                "something else: ids %d=%d.\n",
2932                                priv->net_dev->name, txq->oldest, packet->index);
2933 
2934                 /* DATA packet; we have to unmap and free the SKB */
2935                 for (i = 0; i < frag_num; i++) {
2936                         tbd = &txq->drv[(packet->index + 1 + i) % txq->entries];
2937 
2938                         IPW_DEBUG_TX("TX%d P=%08x L=%d\n",
2939                                      (packet->index + 1 + i) % txq->entries,
2940                                      tbd->host_addr, tbd->buf_length);
2941 
2942                         pci_unmap_single(priv->pci_dev,
2943                                          tbd->host_addr,
2944                                          tbd->buf_length, PCI_DMA_TODEVICE);
2945                 }
2946 
2947                 libipw_txb_free(packet->info.d_struct.txb);
2948                 packet->info.d_struct.txb = NULL;
2949 
2950                 list_add_tail(element, &priv->tx_free_list);
2951                 INC_STAT(&priv->tx_free_stat);
2952 
2953                 /* We have a free slot in the Tx queue, so wake up the
2954                  * transmit layer if it is stopped. */
2955                 if (priv->status & STATUS_ASSOCIATED)
2956                         netif_wake_queue(priv->net_dev);
2957 
2958                 /* A packet was processed by the hardware, so update the
2959                  * watchdog */
2960                 priv->net_dev->trans_start = jiffies;
2961 
2962                 break;
2963 
2964         case COMMAND:
2965                 if (txq->drv[txq->oldest].status.info.fields.txType != 1)
2966                         printk(KERN_WARNING DRV_NAME ": %s: Queue mismatch.  "
2967                                "Expecting COMMAND TBD but pulled "
2968                                "something else: ids %d=%d.\n",
2969                                priv->net_dev->name, txq->oldest, packet->index);
2970 
2971 #ifdef CONFIG_IPW2100_DEBUG
2972                 if (packet->info.c_struct.cmd->host_command_reg <
2973                     ARRAY_SIZE(command_types))
2974                         IPW_DEBUG_TX("Command '%s (%d)' processed: %d.\n",
2975                                      command_types[packet->info.c_struct.cmd->
2976                                                    host_command_reg],
2977                                      packet->info.c_struct.cmd->
2978                                      host_command_reg,
2979                                      packet->info.c_struct.cmd->cmd_status_reg);
2980 #endif
2981 
2982                 list_add_tail(element, &priv->msg_free_list);
2983                 INC_STAT(&priv->msg_free_stat);
2984                 break;
2985         }
2986 
2987         /* advance oldest used TBD pointer to start of next entry */
2988         txq->oldest = (e + 1) % txq->entries;
2989         /* increase available TBDs number */
2990         txq->available += descriptors_used;
2991         SET_STAT(&priv->txq_stat, txq->available);
2992 
2993         IPW_DEBUG_TX("packet latency (send to process)  %ld jiffies\n",
2994                      jiffies - packet->jiffy_start);
2995 
2996         return (!list_empty(&priv->fw_pend_list));
2997 }
2998 
2999 static inline void __ipw2100_tx_complete(struct ipw2100_priv *priv)
3000 {
3001         int i = 0;
3002 
3003         while (__ipw2100_tx_process(priv) && i < 200)
3004                 i++;
3005 
3006         if (i == 200) {
3007                 printk(KERN_WARNING DRV_NAME ": "
3008                        "%s: Driver is running slow (%d iters).\n",
3009                        priv->net_dev->name, i);
3010         }
3011 }
3012 
3013 static void ipw2100_tx_send_commands(struct ipw2100_priv *priv)
3014 {
3015         struct list_head *element;
3016         struct ipw2100_tx_packet *packet;
3017         struct ipw2100_bd_queue *txq = &priv->tx_queue;
3018         struct ipw2100_bd *tbd;
3019         int next = txq->next;
3020 
3021         while (!list_empty(&priv->msg_pend_list)) {
3022                 /* if there isn't enough space in TBD queue, then
3023                  * don't stuff a new one in.
3024                  * NOTE: 3 are needed as a command will take one,
3025                  *       and there is a minimum of 2 that must be
3026                  *       maintained between the r and w indexes
3027                  */
3028                 if (txq->available <= 3) {
3029                         IPW_DEBUG_TX("no room in tx_queue\n");
3030                         break;
3031                 }
3032 
3033                 element = priv->msg_pend_list.next;
3034                 list_del(element);
3035                 DEC_STAT(&priv->msg_pend_stat);
3036 
3037                 packet = list_entry(element, struct ipw2100_tx_packet, list);
3038 
3039                 IPW_DEBUG_TX("using TBD at virt=%p, phys=%04X\n",
3040                              &txq->drv[txq->next],
3041                              (u32) (txq->nic + txq->next *
3042                                       sizeof(struct ipw2100_bd)));
3043 
3044                 packet->index = txq->next;
3045 
3046                 tbd = &txq->drv[txq->next];
3047 
3048                 /* initialize TBD */
3049                 tbd->host_addr = packet->info.c_struct.cmd_phys;
3050                 tbd->buf_length = sizeof(struct ipw2100_cmd_header);
3051                 /* not marking number of fragments causes problems
3052                  * with f/w debug version */
3053                 tbd->num_fragments = 1;
3054                 tbd->status.info.field =
3055                     IPW_BD_STATUS_TX_FRAME_COMMAND |
3056                     IPW_BD_STATUS_TX_INTERRUPT_ENABLE;
3057 
3058                 /* update TBD queue counters */
3059                 txq->next++;
3060                 txq->next %= txq->entries;
3061                 txq->available--;
3062                 DEC_STAT(&priv->txq_stat);
3063 
3064                 list_add_tail(element, &priv->fw_pend_list);
3065                 INC_STAT(&priv->fw_pend_stat);
3066         }
3067 
3068         if (txq->next != next) {
3069                 /* kick off the DMA by notifying firmware the
3070                  * write index has moved; make sure TBD stores are sync'd */
3071                 wmb();
3072                 write_register(priv->net_dev,
3073                                IPW_MEM_HOST_SHARED_TX_QUEUE_WRITE_INDEX,
3074                                txq->next);
3075         }
3076 }
3077 
3078 /*
3079  * ipw2100_tx_send_data
3080  *
3081  */
3082 static void ipw2100_tx_send_data(struct ipw2100_priv *priv)
3083 {
3084         struct list_head *element;
3085         struct ipw2100_tx_packet *packet;
3086         struct ipw2100_bd_queue *txq = &priv->tx_queue;
3087         struct ipw2100_bd *tbd;
3088         int next = txq->next;
3089         int i = 0;
3090         struct ipw2100_data_header *ipw_hdr;
3091         struct libipw_hdr_3addr *hdr;
3092 
3093         while (!list_empty(&priv->tx_pend_list)) {
3094                 /* if there isn't enough space in TBD queue, then
3095                  * don't stuff a new one in.
3096                  * NOTE: 4 are needed as a data will take two,
3097                  *       and there is a minimum of 2 that must be
3098                  *       maintained between the r and w indexes
3099                  */
3100                 element = priv->tx_pend_list.next;
3101                 packet = list_entry(element, struct ipw2100_tx_packet, list);
3102 
3103                 if (unlikely(1 + packet->info.d_struct.txb->nr_frags >
3104                              IPW_MAX_BDS)) {
3105                         /* TODO: Support merging buffers if more than
3106                          * IPW_MAX_BDS are used */
3107                         IPW_DEBUG_INFO("%s: Maximum BD threshold exceeded.  "
3108                                        "Increase fragmentation level.\n",
3109                                        priv->net_dev->name);
3110                 }
3111 
3112                 if (txq->available <= 3 + packet->info.d_struct.txb->nr_frags) {
3113                         IPW_DEBUG_TX("no room in tx_queue\n");
3114                         break;
3115                 }
3116 
3117                 list_del(element);
3118                 DEC_STAT(&priv->tx_pend_stat);
3119 
3120                 tbd = &txq->drv[txq->next];
3121 
3122                 packet->index = txq->next;
3123 
3124                 ipw_hdr = packet->info.d_struct.data;
3125                 hdr = (struct libipw_hdr_3addr *)packet->info.d_struct.txb->
3126                     fragments[0]->data;
3127 
3128                 if (priv->ieee->iw_mode == IW_MODE_INFRA) {
3129                         /* To DS: Addr1 = BSSID, Addr2 = SA,
3130                            Addr3 = DA */
3131                         memcpy(ipw_hdr->src_addr, hdr->addr2, ETH_ALEN);
3132                         memcpy(ipw_hdr->dst_addr, hdr->addr3, ETH_ALEN);
3133                 } else if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
3134                         /* not From/To DS: Addr1 = DA, Addr2 = SA,
3135                            Addr3 = BSSID */
3136                         memcpy(ipw_hdr->src_addr, hdr->addr2, ETH_ALEN);
3137                         memcpy(ipw_hdr->dst_addr, hdr->addr1, ETH_ALEN);
3138                 }
3139 
3140                 ipw_hdr->host_command_reg = SEND;
3141                 ipw_hdr->host_command_reg1 = 0;
3142 
3143                 /* For now we only support host based encryption */
3144                 ipw_hdr->needs_encryption = 0;
3145                 ipw_hdr->encrypted = packet->info.d_struct.txb->encrypted;
3146                 if (packet->info.d_struct.txb->nr_frags > 1)
3147                         ipw_hdr->fragment_size =
3148                             packet->info.d_struct.txb->frag_size -
3149                             LIBIPW_3ADDR_LEN;
3150                 else
3151                         ipw_hdr->fragment_size = 0;
3152 
3153                 tbd->host_addr = packet->info.d_struct.data_phys;
3154                 tbd->buf_length = sizeof(struct ipw2100_data_header);
3155                 tbd->num_fragments = 1 + packet->info.d_struct.txb->nr_frags;
3156                 tbd->status.info.field =
3157                     IPW_BD_STATUS_TX_FRAME_802_3 |
3158                     IPW_BD_STATUS_TX_FRAME_NOT_LAST_FRAGMENT;
3159                 txq->next++;
3160                 txq->next %= txq->entries;
3161 
3162                 IPW_DEBUG_TX("data header tbd TX%d P=%08x L=%d\n",
3163                              packet->index, tbd->host_addr, tbd->buf_length);
3164 #ifdef CONFIG_IPW2100_DEBUG
3165                 if (packet->info.d_struct.txb->nr_frags > 1)
3166                         IPW_DEBUG_FRAG("fragment Tx: %d frames\n",
3167                                        packet->info.d_struct.txb->nr_frags);
3168 #endif
3169 
3170                 for (i = 0; i < packet->info.d_struct.txb->nr_frags; i++) {
3171                         tbd = &txq->drv[txq->next];
3172                         if (i == packet->info.d_struct.txb->nr_frags - 1)
3173                                 tbd->status.info.field =
3174                                     IPW_BD_STATUS_TX_FRAME_802_3 |
3175                                     IPW_BD_STATUS_TX_INTERRUPT_ENABLE;
3176                         else
3177                                 tbd->status.info.field =
3178                                     IPW_BD_STATUS_TX_FRAME_802_3 |
3179                                     IPW_BD_STATUS_TX_FRAME_NOT_LAST_FRAGMENT;
3180 
3181                         tbd->buf_length = packet->info.d_struct.txb->
3182                             fragments[i]->len - LIBIPW_3ADDR_LEN;
3183 
3184                         tbd->host_addr = pci_map_single(priv->pci_dev,
3185                                                         packet->info.d_struct.
3186                                                         txb->fragments[i]->
3187                                                         data +
3188                                                         LIBIPW_3ADDR_LEN,
3189                                                         tbd->buf_length,
3190                                                         PCI_DMA_TODEVICE);
3191 
3192                         IPW_DEBUG_TX("data frag tbd TX%d P=%08x L=%d\n",
3193                                      txq->next, tbd->host_addr,
3194                                      tbd->buf_length);
3195 
3196                         pci_dma_sync_single_for_device(priv->pci_dev,
3197                                                        tbd->host_addr,
3198                                                        tbd->buf_length,
3199                                                        PCI_DMA_TODEVICE);
3200 
3201                         txq->next++;
3202                         txq->next %= txq->entries;
3203                 }
3204 
3205                 txq->available -= 1 + packet->info.d_struct.txb->nr_frags;
3206                 SET_STAT(&priv->txq_stat, txq->available);
3207 
3208                 list_add_tail(element, &priv->fw_pend_list);
3209                 INC_STAT(&priv->fw_pend_stat);
3210         }
3211 
3212         if (txq->next != next) {
3213                 /* kick off the DMA by notifying firmware the
3214                  * write index has moved; make sure TBD stores are sync'd */
3215                 write_register(priv->net_dev,
3216                                IPW_MEM_HOST_SHARED_TX_QUEUE_WRITE_INDEX,
3217                                txq->next);
3218         }
3219 }
3220 
3221 static void ipw2100_irq_tasklet(struct ipw2100_priv *priv)
3222 {
3223         struct net_device *dev = priv->net_dev;
3224         unsigned long flags;
3225         u32 inta, tmp;
3226 
3227         spin_lock_irqsave(&priv->low_lock, flags);
3228         ipw2100_disable_interrupts(priv);
3229 
3230         read_register(dev, IPW_REG_INTA, &inta);
3231 
3232         IPW_DEBUG_ISR("enter - INTA: 0x%08lX\n",
3233                       (unsigned long)inta & IPW_INTERRUPT_MASK);
3234 
3235         priv->in_isr++;
3236         priv->interrupts++;
3237 
3238         /* We do not loop and keep polling for more interrupts as this
3239          * is frowned upon and doesn't play nicely with other potentially
3240          * chained IRQs */
3241         IPW_DEBUG_ISR("INTA: 0x%08lX\n",
3242                       (unsigned long)inta & IPW_INTERRUPT_MASK);
3243 
3244         if (inta & IPW2100_INTA_FATAL_ERROR) {
3245                 printk(KERN_WARNING DRV_NAME
3246                        ": Fatal interrupt. Scheduling firmware restart.\n");
3247                 priv->inta_other++;
3248                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_FATAL_ERROR);
3249 
3250                 read_nic_dword(dev, IPW_NIC_FATAL_ERROR, &priv->fatal_error);
3251                 IPW_DEBUG_INFO("%s: Fatal error value: 0x%08X\n",
3252                                priv->net_dev->name, priv->fatal_error);
3253 
3254                 read_nic_dword(dev, IPW_ERROR_ADDR(priv->fatal_error), &tmp);
3255                 IPW_DEBUG_INFO("%s: Fatal error address value: 0x%08X\n",
3256                                priv->net_dev->name, tmp);
3257 
3258                 /* Wake up any sleeping jobs */
3259                 schedule_reset(priv);
3260         }
3261 
3262         if (inta & IPW2100_INTA_PARITY_ERROR) {
3263                 printk(KERN_ERR DRV_NAME
3264                        ": ***** PARITY ERROR INTERRUPT !!!!\n");
3265                 priv->inta_other++;
3266                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_PARITY_ERROR);
3267         }
3268 
3269         if (inta & IPW2100_INTA_RX_TRANSFER) {
3270                 IPW_DEBUG_ISR("RX interrupt\n");
3271 
3272                 priv->rx_interrupts++;
3273 
3274                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_RX_TRANSFER);
3275 
3276                 __ipw2100_rx_process(priv);
3277                 __ipw2100_tx_complete(priv);
3278         }
3279 
3280         if (inta & IPW2100_INTA_TX_TRANSFER) {
3281                 IPW_DEBUG_ISR("TX interrupt\n");
3282 
3283                 priv->tx_interrupts++;
3284 
3285                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_TX_TRANSFER);
3286 
3287                 __ipw2100_tx_complete(priv);
3288                 ipw2100_tx_send_commands(priv);
3289                 ipw2100_tx_send_data(priv);
3290         }
3291 
3292         if (inta & IPW2100_INTA_TX_COMPLETE) {
3293                 IPW_DEBUG_ISR("TX complete\n");
3294                 priv->inta_other++;
3295                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_TX_COMPLETE);
3296 
3297                 __ipw2100_tx_complete(priv);
3298         }
3299 
3300         if (inta & IPW2100_INTA_EVENT_INTERRUPT) {
3301                 /* ipw2100_handle_event(dev); */
3302                 priv->inta_other++;
3303                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_EVENT_INTERRUPT);
3304         }
3305 
3306         if (inta & IPW2100_INTA_FW_INIT_DONE) {
3307                 IPW_DEBUG_ISR("FW init done interrupt\n");
3308                 priv->inta_other++;
3309 
3310                 read_register(dev, IPW_REG_INTA, &tmp);
3311                 if (tmp & (IPW2100_INTA_FATAL_ERROR |
3312                            IPW2100_INTA_PARITY_ERROR)) {
3313                         write_register(dev, IPW_REG_INTA,
3314                                        IPW2100_INTA_FATAL_ERROR |
3315                                        IPW2100_INTA_PARITY_ERROR);
3316                 }
3317 
3318                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_FW_INIT_DONE);
3319         }
3320 
3321         if (inta & IPW2100_INTA_STATUS_CHANGE) {
3322                 IPW_DEBUG_ISR("Status change interrupt\n");
3323                 priv->inta_other++;
3324                 write_register(dev, IPW_REG_INTA, IPW2100_INTA_STATUS_CHANGE);
3325         }
3326 
3327         if (inta & IPW2100_INTA_SLAVE_MODE_HOST_COMMAND_DONE) {
3328                 IPW_DEBUG_ISR("slave host mode interrupt\n");
3329                 priv->inta_other++;
3330                 write_register(dev, IPW_REG_INTA,
3331                                IPW2100_INTA_SLAVE_MODE_HOST_COMMAND_DONE);
3332         }
3333 
3334         priv->in_isr--;
3335         ipw2100_enable_interrupts(priv);
3336 
3337         spin_unlock_irqrestore(&priv->low_lock, flags);
3338 
3339         IPW_DEBUG_ISR("exit\n");
3340 }
3341 
3342 static irqreturn_t ipw2100_interrupt(int irq, void *data)
3343 {
3344         struct ipw2100_priv *priv = data;
3345         u32 inta, inta_mask;
3346 
3347         if (!data)
3348                 return IRQ_NONE;
3349 
3350         spin_lock(&priv->low_lock);
3351 
3352         /* We check to see if we should be ignoring interrupts before
3353          * we touch the hardware.  During ucode load if we try and handle
3354          * an interrupt we can cause keyboard problems as well as cause
3355          * the ucode to fail to initialize */
3356         if (!(priv->status & STATUS_INT_ENABLED)) {
3357                 /* Shared IRQ */
3358                 goto none;
3359         }
3360 
3361         read_register(priv->net_dev, IPW_REG_INTA_MASK, &inta_mask);
3362         read_register(priv->net_dev, IPW_REG_INTA, &inta);
3363 
3364         if (inta == 0xFFFFFFFF) {
3365                 /* Hardware disappeared */
3366                 printk(KERN_WARNING DRV_NAME ": IRQ INTA == 0xFFFFFFFF\n");
3367                 goto none;
3368         }
3369 
3370         inta &= IPW_INTERRUPT_MASK;
3371 
3372         if (!(inta & inta_mask)) {
3373                 /* Shared interrupt */
3374                 goto none;
3375         }
3376 
3377         /* We disable the hardware interrupt here just to prevent unneeded
3378          * calls to be made.  We disable this again within the actual
3379          * work tasklet, so if another part of the code re-enables the
3380          * interrupt, that is fine */
3381         ipw2100_disable_interrupts(priv);
3382 
3383         tasklet_schedule(&priv->irq_tasklet);
3384         spin_unlock(&priv->low_lock);
3385 
3386         return IRQ_HANDLED;
3387       none:
3388         spin_unlock(&priv->low_lock);
3389         return IRQ_NONE;
3390 }
3391 
3392 static netdev_tx_t ipw2100_tx(struct libipw_txb *txb,
3393                               struct net_device *dev, int pri)
3394 {
3395         struct ipw2100_priv *priv = libipw_priv(dev);
3396         struct list_head *element;
3397         struct ipw2100_tx_packet *packet;
3398         unsigned long flags;
3399 
3400         spin_lock_irqsave(&priv->low_lock, flags);
3401 
3402         if (!(priv->status & STATUS_ASSOCIATED)) {
3403                 IPW_DEBUG_INFO("Can not transmit when not connected.\n");
3404                 priv->net_dev->stats.tx_carrier_errors++;
3405                 netif_stop_queue(dev);
3406                 goto fail_unlock;
3407         }
3408 
3409         if (list_empty(&priv->tx_free_list))
3410                 goto fail_unlock;
3411 
3412         element = priv->tx_free_list.next;
3413         packet = list_entry(element, struct ipw2100_tx_packet, list);
3414 
3415         packet->info.d_struct.txb = txb;
3416 
3417         IPW_DEBUG_TX("Sending fragment (%d bytes):\n", txb->fragments[0]->len);
3418         printk_buf(IPW_DL_TX, txb->fragments[0]->data, txb->fragments[0]->len);
3419 
3420         packet->jiffy_start = jiffies;
3421 
3422         list_del(element);
3423         DEC_STAT(&priv->tx_free_stat);
3424 
3425         list_add_tail(element, &priv->tx_pend_list);
3426         INC_STAT(&priv->tx_pend_stat);
3427 
3428         ipw2100_tx_send_data(priv);
3429 
3430         spin_unlock_irqrestore(&priv->low_lock, flags);
3431         return NETDEV_TX_OK;
3432 
3433 fail_unlock:
3434         netif_stop_queue(dev);
3435         spin_unlock_irqrestore(&priv->low_lock, flags);
3436         return NETDEV_TX_BUSY;
3437 }
3438 
3439 static int ipw2100_msg_allocate(struct ipw2100_priv *priv)
3440 {
3441         int i, j, err = -EINVAL;
3442         void *v;
3443         dma_addr_t p;
3444 
3445         priv->msg_buffers =
3446             kmalloc(IPW_COMMAND_POOL_SIZE * sizeof(struct ipw2100_tx_packet),
3447                     GFP_KERNEL);
3448         if (!priv->msg_buffers)
3449                 return -ENOMEM;
3450 
3451         for (i = 0; i < IPW_COMMAND_POOL_SIZE; i++) {
3452                 v = pci_alloc_consistent(priv->pci_dev,
3453                                          sizeof(struct ipw2100_cmd_header), &p);
3454                 if (!v) {
3455                         printk(KERN_ERR DRV_NAME ": "
3456                                "%s: PCI alloc failed for msg "
3457                                "buffers.\n", priv->net_dev->name);
3458                         err = -ENOMEM;
3459                         break;
3460                 }
3461 
3462                 memset(v, 0, sizeof(struct ipw2100_cmd_header));
3463 
3464                 priv->msg_buffers[i].type = COMMAND;
3465                 priv->msg_buffers[i].info.c_struct.cmd =
3466                     (struct ipw2100_cmd_header *)v;
3467                 priv->msg_buffers[i].info.c_struct.cmd_phys = p;
3468         }
3469 
3470         if (i == IPW_COMMAND_POOL_SIZE)
3471                 return 0;
3472 
3473         for (j = 0; j < i; j++) {
3474                 pci_free_consistent(priv->pci_dev,
3475                                     sizeof(struct ipw2100_cmd_header),
3476                                     priv->msg_buffers[j].info.c_struct.cmd,
3477                                     priv->msg_buffers[j].info.c_struct.
3478                                     cmd_phys);
3479         }
3480 
3481         kfree(priv->msg_buffers);
3482         priv->msg_buffers = NULL;
3483 
3484         return err;
3485 }
3486 
3487 static int ipw2100_msg_initialize(struct ipw2100_priv *priv)
3488 {
3489         int i;
3490 
3491         INIT_LIST_HEAD(&priv->msg_free_list);
3492         INIT_LIST_HEAD(&priv->msg_pend_list);
3493 
3494         for (i = 0; i < IPW_COMMAND_POOL_SIZE; i++)
3495                 list_add_tail(&priv->msg_buffers[i].list, &priv->msg_free_list);
3496         SET_STAT(&priv->msg_free_stat, i);
3497 
3498         return 0;
3499 }
3500 
3501 static void ipw2100_msg_free(struct ipw2100_priv *priv)
3502 {
3503         int i;
3504 
3505         if (!priv->msg_buffers)
3506                 return;
3507 
3508         for (i = 0; i < IPW_COMMAND_POOL_SIZE; i++) {
3509                 pci_free_consistent(priv->pci_dev,
3510                                     sizeof(struct ipw2100_cmd_header),
3511                                     priv->msg_buffers[i].info.c_struct.cmd,
3512                                     priv->msg_buffers[i].info.c_struct.
3513                                     cmd_phys);
3514         }
3515 
3516         kfree(priv->msg_buffers);
3517         priv->msg_buffers = NULL;
3518 }
3519 
3520 static ssize_t show_pci(struct device *d, struct device_attribute *attr,
3521                         char *buf)
3522 {
3523         struct pci_dev *pci_dev = container_of(d, struct pci_dev, dev);
3524         char *out = buf;
3525         int i, j;
3526         u32 val;
3527 
3528         for (i = 0; i < 16; i++) {
3529                 out += sprintf(out, "[%08X] ", i * 16);
3530                 for (j = 0; j < 16; j += 4) {
3531                         pci_read_config_dword(pci_dev, i * 16 + j, &val);
3532                         out += sprintf(out, "%08X ", val);
3533                 }
3534                 out += sprintf(out, "\n");
3535         }
3536 
3537         return out - buf;
3538 }
3539 
3540 static DEVICE_ATTR(pci, S_IRUGO, show_pci, NULL);
3541 
3542 static ssize_t show_cfg(struct device *d, struct device_attribute *attr,
3543                         char *buf)
3544 {
3545         struct ipw2100_priv *p = dev_get_drvdata(d);
3546         return sprintf(buf, "0x%08x\n", (int)p->config);
3547 }
3548 
3549 static DEVICE_ATTR(cfg, S_IRUGO, show_cfg, NULL);
3550 
3551 static ssize_t show_status(struct device *d, struct device_attribute *attr,
3552                            char *buf)
3553 {
3554         struct ipw2100_priv *p = dev_get_drvdata(d);
3555         return sprintf(buf, "0x%08x\n", (int)p->status);
3556 }
3557 
3558 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3559 
3560 static ssize_t show_capability(struct device *d, struct device_attribute *attr,
3561                                char *buf)
3562 {
3563         struct ipw2100_priv *p = dev_get_drvdata(d);
3564         return sprintf(buf, "0x%08x\n", (int)p->capability);
3565 }
3566 
3567 static DEVICE_ATTR(capability, S_IRUGO, show_capability, NULL);
3568 
3569 #define IPW2100_REG(x) { IPW_ ##x, #x }
3570 static const struct {
3571         u32 addr;
3572         const char *name;
3573 } hw_data[] = {
3574 IPW2100_REG(REG_GP_CNTRL),
3575             IPW2100_REG(REG_GPIO),
3576             IPW2100_REG(REG_INTA),
3577             IPW2100_REG(REG_INTA_MASK), IPW2100_REG(REG_RESET_REG),};
3578 #define IPW2100_NIC(x, s) { x, #x, s }
3579 static const struct {
3580         u32 addr;
3581         const char *name;
3582         size_t size;
3583 } nic_data[] = {
3584 IPW2100_NIC(IPW2100_CONTROL_REG, 2),
3585             IPW2100_NIC(0x210014, 1), IPW2100_NIC(0x210000, 1),};
3586 #define IPW2100_ORD(x, d) { IPW_ORD_ ##x, #x, d }
3587 static const struct {
3588         u8 index;
3589         const char *name;
3590         const char *desc;
3591 } ord_data[] = {
3592 IPW2100_ORD(STAT_TX_HOST_REQUESTS, "requested Host Tx's (MSDU)"),
3593             IPW2100_ORD(STAT_TX_HOST_COMPLETE,
3594                                 "successful Host Tx's (MSDU)"),
3595             IPW2100_ORD(STAT_TX_DIR_DATA,
3596                                 "successful Directed Tx's (MSDU)"),
3597             IPW2100_ORD(STAT_TX_DIR_DATA1,
3598                                 "successful Directed Tx's (MSDU) @ 1MB"),
3599             IPW2100_ORD(STAT_TX_DIR_DATA2,
3600                                 "successful Directed Tx's (MSDU) @ 2MB"),
3601             IPW2100_ORD(STAT_TX_DIR_DATA5_5,
3602                                 "successful Directed Tx's (MSDU) @ 5_5MB"),
3603             IPW2100_ORD(STAT_TX_DIR_DATA11,
3604                                 "successful Directed Tx's (MSDU) @ 11MB"),
3605             IPW2100_ORD(STAT_TX_NODIR_DATA1,
3606                                 "successful Non_Directed Tx's (MSDU) @ 1MB"),
3607             IPW2100_ORD(STAT_TX_NODIR_DATA2,
3608                                 "successful Non_Directed Tx's (MSDU) @ 2MB"),
3609             IPW2100_ORD(STAT_TX_NODIR_DATA5_5,
3610                                 "successful Non_Directed Tx's (MSDU) @ 5.5MB"),
3611             IPW2100_ORD(STAT_TX_NODIR_DATA11,
3612                                 "successful Non_Directed Tx's (MSDU) @ 11MB"),
3613             IPW2100_ORD(STAT_NULL_DATA, "successful NULL data Tx's"),
3614             IPW2100_ORD(STAT_TX_RTS, "successful Tx RTS"),
3615             IPW2100_ORD(STAT_TX_CTS, "successful Tx CTS"),
3616             IPW2100_ORD(STAT_TX_ACK, "successful Tx ACK"),
3617             IPW2100_ORD(STAT_TX_ASSN, "successful Association Tx's"),
3618             IPW2100_ORD(STAT_TX_ASSN_RESP,
3619                                 "successful Association response Tx's"),
3620             IPW2100_ORD(STAT_TX_REASSN,
3621                                 "successful Reassociation Tx's"),
3622             IPW2100_ORD(STAT_TX_REASSN_RESP,
3623                                 "successful Reassociation response Tx's"),
3624             IPW2100_ORD(STAT_TX_PROBE,
3625                                 "probes successfully transmitted"),
3626             IPW2100_ORD(STAT_TX_PROBE_RESP,
3627                                 "probe responses successfully transmitted"),
3628             IPW2100_ORD(STAT_TX_BEACON, "tx beacon"),
3629             IPW2100_ORD(STAT_TX_ATIM, "Tx ATIM"),
3630             IPW2100_ORD(STAT_TX_DISASSN,
3631                                 "successful Disassociation TX"),
3632             IPW2100_ORD(STAT_TX_AUTH, "successful Authentication Tx"),
3633             IPW2100_ORD(STAT_TX_DEAUTH,
3634                                 "successful Deauthentication TX"),
3635             IPW2100_ORD(STAT_TX_TOTAL_BYTES,
3636                                 "Total successful Tx data bytes"),
3637             IPW2100_ORD(STAT_TX_RETRIES, "Tx retries"),
3638             IPW2100_ORD(STAT_TX_RETRY1, "Tx retries at 1MBPS"),
3639             IPW2100_ORD(STAT_TX_RETRY2, "Tx retries at 2MBPS"),
3640             IPW2100_ORD(STAT_TX_RETRY5_5, "Tx retries at 5.5MBPS"),
3641             IPW2100_ORD(STAT_TX_RETRY11, "Tx retries at 11MBPS"),
3642             IPW2100_ORD(STAT_TX_FAILURES, "Tx Failures"),
3643             IPW2100_ORD(STAT_TX_MAX_TRIES_IN_HOP,
3644                                 "times max tries in a hop failed"),
3645             IPW2100_ORD(STAT_TX_DISASSN_FAIL,
3646                                 "times disassociation failed"),
3647             IPW2100_ORD(STAT_TX_ERR_CTS, "missed/bad CTS frames"),
3648             IPW2100_ORD(STAT_TX_ERR_ACK, "tx err due to acks"),
3649             IPW2100_ORD(STAT_RX_HOST, "packets passed to host"),
3650             IPW2100_ORD(STAT_RX_DIR_DATA, "directed packets"),
3651             IPW2100_ORD(STAT_RX_DIR_DATA1, "directed packets at 1MB"),
3652             IPW2100_ORD(STAT_RX_DIR_DATA2, "directed packets at 2MB"),
3653             IPW2100_ORD(STAT_RX_DIR_DATA5_5,
3654                                 "directed packets at 5.5MB"),
3655             IPW2100_ORD(STAT_RX_DIR_DATA11, "directed packets at 11MB"),
3656             IPW2100_ORD(STAT_RX_NODIR_DATA, "nondirected packets"),
3657             IPW2100_ORD(STAT_RX_NODIR_DATA1,
3658                                 "nondirected packets at 1MB"),
3659             IPW2100_ORD(STAT_RX_NODIR_DATA2,
3660                                 "nondirected packets at 2MB"),
3661             IPW2100_ORD(STAT_RX_NODIR_DATA5_5,
3662                                 "nondirected packets at 5.5MB"),
3663             IPW2100_ORD(STAT_RX_NODIR_DATA11,
3664                                 "nondirected packets at 11MB"),
3665             IPW2100_ORD(STAT_RX_NULL_DATA, "null data rx's"),
3666             IPW2100_ORD(STAT_RX_RTS, "Rx RTS"), IPW2100_ORD(STAT_RX_CTS,
3667                                                                     "Rx CTS"),
3668             IPW2100_ORD(STAT_RX_ACK, "Rx ACK"),
3669             IPW2100_ORD(STAT_RX_CFEND, "Rx CF End"),
3670             IPW2100_ORD(STAT_RX_CFEND_ACK, "Rx CF End + CF Ack"),
3671             IPW2100_ORD(STAT_RX_ASSN, "Association Rx's"),
3672             IPW2100_ORD(STAT_RX_ASSN_RESP, "Association response Rx's"),
3673             IPW2100_ORD(STAT_RX_REASSN, "Reassociation Rx's"),
3674             IPW2100_ORD(STAT_RX_REASSN_RESP,
3675                                 "Reassociation response Rx's"),
3676             IPW2100_ORD(STAT_RX_PROBE, "probe Rx's"),
3677             IPW2100_ORD(STAT_RX_PROBE_RESP, "probe response Rx's"),
3678             IPW2100_ORD(STAT_RX_BEACON, "Rx beacon"),
3679             IPW2100_ORD(STAT_RX_ATIM, "Rx ATIM"),
3680             IPW2100_ORD(STAT_RX_DISASSN, "disassociation Rx"),
3681             IPW2100_ORD(STAT_RX_AUTH, "authentication Rx"),
3682             IPW2100_ORD(STAT_RX_DEAUTH, "deauthentication Rx"),
3683             IPW2100_ORD(STAT_RX_TOTAL_BYTES,
3684                                 "Total rx data bytes received"),
3685             IPW2100_ORD(STAT_RX_ERR_CRC, "packets with Rx CRC error"),
3686             IPW2100_ORD(STAT_RX_ERR_CRC1, "Rx CRC errors at 1MB"),
3687             IPW2100_ORD(STAT_RX_ERR_CRC2, "Rx CRC errors at 2MB"),
3688             IPW2100_ORD(STAT_RX_ERR_CRC5_5, "Rx CRC errors at 5.5MB"),
3689             IPW2100_ORD(STAT_RX_ERR_CRC11, "Rx CRC errors at 11MB"),
3690             IPW2100_ORD(STAT_RX_DUPLICATE1,
3691                                 "duplicate rx packets at 1MB"),
3692             IPW2100_ORD(STAT_RX_DUPLICATE2,
3693                                 "duplicate rx packets at 2MB"),
3694             IPW2100_ORD(STAT_RX_DUPLICATE5_5,
3695                                 "duplicate rx packets at 5.5MB"),
3696             IPW2100_ORD(STAT_RX_DUPLICATE11,
3697                                 "duplicate rx packets at 11MB"),
3698             IPW2100_ORD(STAT_RX_DUPLICATE, "duplicate rx packets"),
3699             IPW2100_ORD(PERS_DB_LOCK, "locking fw permanent  db"),
3700             IPW2100_ORD(PERS_DB_SIZE, "size of fw permanent  db"),
3701             IPW2100_ORD(PERS_DB_ADDR, "address of fw permanent  db"),
3702             IPW2100_ORD(STAT_RX_INVALID_PROTOCOL,
3703                                 "rx frames with invalid protocol"),
3704             IPW2100_ORD(SYS_BOOT_TIME, "Boot time"),
3705             IPW2100_ORD(STAT_RX_NO_BUFFER,
3706                                 "rx frames rejected due to no buffer"),
3707             IPW2100_ORD(STAT_RX_MISSING_FRAG,
3708                                 "rx frames dropped due to missing fragment"),
3709             IPW2100_ORD(STAT_RX_ORPHAN_FRAG,
3710                                 "rx frames dropped due to non-sequential fragment"),
3711             IPW2100_ORD(STAT_RX_ORPHAN_FRAME,
3712                                 "rx frames dropped due to unmatched 1st frame"),
3713             IPW2100_ORD(STAT_RX_FRAG_AGEOUT,
3714                                 "rx frames dropped due to uncompleted frame"),
3715             IPW2100_ORD(STAT_RX_ICV_ERRORS,
3716                                 "ICV errors during decryption"),
3717             IPW2100_ORD(STAT_PSP_SUSPENSION, "times adapter suspended"),
3718             IPW2100_ORD(STAT_PSP_BCN_TIMEOUT, "beacon timeout"),
3719             IPW2100_ORD(STAT_PSP_POLL_TIMEOUT,
3720                                 "poll response timeouts"),
3721             IPW2100_ORD(STAT_PSP_NONDIR_TIMEOUT,
3722                                 "timeouts waiting for last {broad,multi}cast pkt"),
3723             IPW2100_ORD(STAT_PSP_RX_DTIMS, "PSP DTIMs received"),
3724             IPW2100_ORD(STAT_PSP_RX_TIMS, "PSP TIMs received"),
3725             IPW2100_ORD(STAT_PSP_STATION_ID, "PSP Station ID"),
3726             IPW2100_ORD(LAST_ASSN_TIME, "RTC time of last association"),
3727             IPW2100_ORD(STAT_PERCENT_MISSED_BCNS,
3728                                 "current calculation of % missed beacons"),
3729             IPW2100_ORD(STAT_PERCENT_RETRIES,
3730                                 "current calculation of % missed tx retries"),
3731             IPW2100_ORD(ASSOCIATED_AP_PTR,
3732                                 "0 if not associated, else pointer to AP table entry"),
3733             IPW2100_ORD(AVAILABLE_AP_CNT,
3734                                 "AP's decsribed in the AP table"),
3735             IPW2100_ORD(AP_LIST_PTR, "Ptr to list of available APs"),
3736             IPW2100_ORD(STAT_AP_ASSNS, "associations"),
3737             IPW2100_ORD(STAT_ASSN_FAIL, "association failures"),
3738             IPW2100_ORD(STAT_ASSN_RESP_FAIL,
3739                                 "failures due to response fail"),
3740             IPW2100_ORD(STAT_FULL_SCANS, "full scans"),
3741             IPW2100_ORD(CARD_DISABLED, "Card Disabled"),
3742             IPW2100_ORD(STAT_ROAM_INHIBIT,
3743                                 "times roaming was inhibited due to activity"),
3744             IPW2100_ORD(RSSI_AT_ASSN,
3745                                 "RSSI of associated AP at time of association"),
3746             IPW2100_ORD(STAT_ASSN_CAUSE1,
3747                                 "reassociation: no probe response or TX on hop"),
3748             IPW2100_ORD(STAT_ASSN_CAUSE2,
3749                                 "reassociation: poor tx/rx quality"),
3750             IPW2100_ORD(STAT_ASSN_CAUSE3,
3751                                 "reassociation: tx/rx quality (excessive AP load"),
3752             IPW2100_ORD(STAT_ASSN_CAUSE4,
3753                                 "reassociation: AP RSSI level"),
3754             IPW2100_ORD(STAT_ASSN_CAUSE5,
3755                                 "reassociations due to load leveling"),
3756             IPW2100_ORD(STAT_AUTH_FAIL, "times authentication failed"),
3757             IPW2100_ORD(STAT_AUTH_RESP_FAIL,
3758                                 "times authentication response failed"),
3759             IPW2100_ORD(STATION_TABLE_CNT,
3760                                 "entries in association table"),
3761             IPW2100_ORD(RSSI_AVG_CURR, "Current avg RSSI"),
3762             IPW2100_ORD(POWER_MGMT_MODE, "Power mode - 0=CAM, 1=PSP"),
3763             IPW2100_ORD(COUNTRY_CODE,
3764                                 "IEEE country code as recv'd from beacon"),
3765             IPW2100_ORD(COUNTRY_CHANNELS,
3766                                 "channels supported by country"),
3767             IPW2100_ORD(RESET_CNT, "adapter resets (warm)"),
3768             IPW2100_ORD(BEACON_INTERVAL, "Beacon interval"),
3769             IPW2100_ORD(ANTENNA_DIVERSITY,
3770                                 "TRUE if antenna diversity is disabled"),
3771             IPW2100_ORD(DTIM_PERIOD, "beacon intervals between DTIMs"),
3772             IPW2100_ORD(OUR_FREQ,
3773                                 "current radio freq lower digits - channel ID"),
3774             IPW2100_ORD(RTC_TIME, "current RTC time"),
3775             IPW2100_ORD(PORT_TYPE, "operating mode"),
3776             IPW2100_ORD(CURRENT_TX_RATE, "current tx rate"),
3777             IPW2100_ORD(SUPPORTED_RATES, "supported tx rates"),
3778             IPW2100_ORD(ATIM_WINDOW, "current ATIM Window"),
3779             IPW2100_ORD(BASIC_RATES, "basic tx rates"),
3780             IPW2100_ORD(NIC_HIGHEST_RATE, "NIC highest tx rate"),
3781             IPW2100_ORD(AP_HIGHEST_RATE, "AP highest tx rate"),
3782             IPW2100_ORD(CAPABILITIES,
3783                                 "Management frame capability field"),
3784             IPW2100_ORD(AUTH_TYPE, "Type of authentication"),
3785             IPW2100_ORD(RADIO_TYPE, "Adapter card platform type"),
3786             IPW2100_ORD(RTS_THRESHOLD,
3787                                 "Min packet length for RTS handshaking"),
3788             IPW2100_ORD(INT_MODE, "International mode"),
3789             IPW2100_ORD(FRAGMENTATION_THRESHOLD,
3790                                 "protocol frag threshold"),
3791             IPW2100_ORD(EEPROM_SRAM_DB_BLOCK_START_ADDRESS,
3792                                 "EEPROM offset in SRAM"),
3793             IPW2100_ORD(EEPROM_SRAM_DB_BLOCK_SIZE,
3794                                 "EEPROM size in SRAM"),
3795             IPW2100_ORD(EEPROM_SKU_CAPABILITY, "EEPROM SKU Capability"),
3796             IPW2100_ORD(EEPROM_IBSS_11B_CHANNELS,
3797                                 "EEPROM IBSS 11b channel set"),
3798             IPW2100_ORD(MAC_VERSION, "MAC Version"),
3799             IPW2100_ORD(MAC_REVISION, "MAC Revision"),
3800             IPW2100_ORD(RADIO_VERSION, "Radio Version"),
3801             IPW2100_ORD(NIC_MANF_DATE_TIME, "MANF Date/Time STAMP"),
3802             IPW2100_ORD(UCODE_VERSION, "Ucode Version"),};
3803 
3804 static ssize_t show_registers(struct device *d, struct device_attribute *attr,
3805                               char *buf)
3806 {
3807         int i;
3808         struct ipw2100_priv *priv = dev_get_drvdata(d);
3809         struct net_device *dev = priv->net_dev;
3810         char *out = buf;
3811         u32 val = 0;
3812 
3813         out += sprintf(out, "%30s [Address ] : Hex\n", "Register");
3814 
3815         for (i = 0; i < ARRAY_SIZE(hw_data); i++) {
3816                 read_register(dev, hw_data[i].addr, &val);
3817                 out += sprintf(out, "%30s [%08X] : %08X\n",
3818                                hw_data[i].name, hw_data[i].addr, val);
3819         }
3820 
3821         return out - buf;
3822 }
3823 
3824 static DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
3825 
3826 static ssize_t show_hardware(struct device *d, struct device_attribute *attr,
3827                              char *buf)
3828 {
3829         struct ipw2100_priv *priv = dev_get_drvdata(d);
3830         struct net_device *dev = priv->net_dev;
3831         char *out = buf;
3832         int i;
3833 
3834         out += sprintf(out, "%30s [Address ] : Hex\n", "NIC entry");
3835 
3836         for (i = 0; i < ARRAY_SIZE(nic_data); i++) {
3837                 u8 tmp8;
3838                 u16 tmp16;
3839                 u32 tmp32;
3840 
3841                 switch (nic_data[i].size) {
3842                 case 1:
3843                         read_nic_byte(dev, nic_data[i].addr, &tmp8);
3844                         out += sprintf(out, "%30s [%08X] : %02X\n",
3845                                        nic_data[i].name, nic_data[i].addr,
3846                                        tmp8);
3847                         break;
3848                 case 2:
3849                         read_nic_word(dev, nic_data[i].addr, &tmp16);
3850                         out += sprintf(out, "%30s [%08X] : %04X\n",
3851                                        nic_data[i].name, nic_data[i].addr,
3852                                        tmp16);
3853                         break;
3854                 case 4:
3855                         read_nic_dword(dev, nic_data[i].addr, &tmp32);
3856                         out += sprintf(out, "%30s [%08X] : %08X\n",
3857                                        nic_data[i].name, nic_data[i].addr,
3858                                        tmp32);
3859                         break;
3860                 }
3861         }
3862         return out - buf;
3863 }
3864 
3865 static DEVICE_ATTR(hardware, S_IRUGO, show_hardware, NULL);
3866 
3867 static ssize_t show_memory(struct device *d, struct device_attribute *attr,
3868                            char *buf)
3869 {
3870         struct ipw2100_priv *priv = dev_get_drvdata(d);
3871         struct net_device *dev = priv->net_dev;
3872         static unsigned long loop = 0;
3873         int len = 0;
3874         u32 buffer[4];
3875         int i;
3876         char line[81];
3877 
3878         if (loop >= 0x30000)
3879                 loop = 0;
3880 
3881         /* sysfs provides us PAGE_SIZE buffer */
3882         while (len < PAGE_SIZE - 128 && loop < 0x30000) {
3883 
3884                 if (priv->snapshot[0])
3885                         for (i = 0; i < 4; i++)
3886                                 buffer[i] =
3887                                     *(u32 *) SNAPSHOT_ADDR(loop + i * 4);
3888                 else
3889                         for (i = 0; i < 4; i++)
3890                                 read_nic_dword(dev, loop + i * 4, &buffer[i]);
3891 
3892                 if (priv->dump_raw)
3893                         len += sprintf(buf + len,
3894                                        "%c%c%c%c"
3895                                        "%c%c%c%c"
3896                                        "%c%c%c%c"
3897                                        "%c%c%c%c",
3898                                        ((u8 *) buffer)[0x0],
3899                                        ((u8 *) buffer)[0x1],
3900                                        ((u8 *) buffer)[0x2],
3901                                        ((u8 *) buffer)[0x3],
3902                                        ((u8 *) buffer)[0x4],
3903                                        ((u8 *) buffer)[0x5],
3904                                        ((u8 *) buffer)[0x6],
3905                                        ((u8 *) buffer)[0x7],
3906                                        ((u8 *) buffer)[0x8],
3907                                        ((u8 *) buffer)[0x9],
3908                                        ((u8 *) buffer)[0xa],
3909                                        ((u8 *) buffer)[0xb],
3910                                        ((u8 *) buffer)[0xc],
3911                                        ((u8 *) buffer)[0xd],
3912                                        ((u8 *) buffer)[0xe],
3913                                        ((u8 *) buffer)[0xf]);
3914                 else
3915                         len += sprintf(buf + len, "%s\n",
3916                                        snprint_line(line, sizeof(line),
3917                                                     (u8 *) buffer, 16, loop));
3918                 loop += 16;
3919         }
3920 
3921         return len;
3922 }
3923 
3924 static ssize_t store_memory(struct device *d, struct device_attribute *attr,
3925                             const char *buf, size_t count)
3926 {
3927         struct ipw2100_priv *priv = dev_get_drvdata(d);
3928         struct net_device *dev = priv->net_dev;
3929         const char *p = buf;
3930 
3931         (void)dev;              /* kill unused-var warning for debug-only code */
3932 
3933         if (count < 1)
3934                 return count;
3935 
3936         if (p[0] == '1' ||
3937             (count >= 2 && tolower(p[0]) == 'o' && tolower(p[1]) == 'n')) {
3938                 IPW_DEBUG_INFO("%s: Setting memory dump to RAW mode.\n",
3939                                dev->name);
3940                 priv->dump_raw = 1;
3941 
3942         } else if (p[0] == '' || (count >= 2 && tolower(p[0]) == 'o' &&
3943                                    tolower(p[1]) == 'f')) {
3944                 IPW_DEBUG_INFO("%s: Setting memory dump to HEX mode.\n",
3945                                dev->name);
3946                 priv->dump_raw = 0;
3947 
3948         } else if (tolower(p[0]) == 'r') {
3949                 IPW_DEBUG_INFO("%s: Resetting firmware snapshot.\n", dev->name);
3950                 ipw2100_snapshot_free(priv);
3951 
3952         } else
3953                 IPW_DEBUG_INFO("%s: Usage: 0|on = HEX, 1|off = RAW, "
3954                                "reset = clear memory snapshot\n", dev->name);
3955 
3956         return count;
3957 }
3958 
3959 static DEVICE_ATTR(memory, S_IWUSR | S_IRUGO, show_memory, store_memory);
3960 
3961 static ssize_t show_ordinals(struct device *d, struct device_attribute *attr,
3962                              char *buf)
3963 {
3964         struct ipw2100_priv *priv = dev_get_drvdata(d);
3965         u32 val = 0;
3966         int len = 0;
3967         u32 val_len;
3968         static int loop = 0;
3969 
3970         if (priv->status & STATUS_RF_KILL_MASK)
3971                 return 0;
3972 
3973         if (loop >= ARRAY_SIZE(ord_data))
3974                 loop = 0;
3975 
3976         /* sysfs provides us PAGE_SIZE buffer */
3977         while (len < PAGE_SIZE - 128 && loop < ARRAY_SIZE(ord_data)) {
3978                 val_len = sizeof(u32);
3979 
3980                 if (ipw2100_get_ordinal(priv, ord_data[loop].index, &val,
3981                                         &val_len))
3982                         len += sprintf(buf + len, "[0x%02X] = ERROR    %s\n",
3983                                        ord_data[loop].index,
3984                                        ord_data[loop].desc);
3985                 else
3986                         len += sprintf(buf + len, "[0x%02X] = 0x%08X %s\n",
3987                                        ord_data[loop].index, val,
3988                                        ord_data[loop].desc);
3989                 loop++;
3990         }
3991 
3992         return len;
3993 }
3994 
3995 static DEVICE_ATTR(ordinals, S_IRUGO, show_ordinals, NULL);
3996 
3997 static ssize_t show_stats(struct device *d, struct device_attribute *attr,
3998                           char *buf)
3999 {
4000         struct ipw2100_priv *priv = dev_get_drvdata(d);
4001         char *out = buf;
4002 
4003         out += sprintf(out, "interrupts: %d {tx: %d, rx: %d, other: %d}\n",
4004                        priv->interrupts, priv->tx_interrupts,
4005                        priv->rx_interrupts, priv->inta_other);
4006         out += sprintf(out, "firmware resets: %d\n", priv->resets);
4007         out += sprintf(out, "firmware hangs: %d\n", priv->hangs);
4008 #ifdef CONFIG_IPW2100_DEBUG
4009         out += sprintf(out, "packet mismatch image: %s\n",
4010                        priv->snapshot[0] ? "YES" : "NO");
4011 #endif
4012 
4013         return out - buf;
4014 }
4015 
4016 static DEVICE_ATTR(stats, S_IRUGO, show_stats, NULL);
4017 
4018 static int ipw2100_switch_mode(struct ipw2100_priv *priv, u32 mode)
4019 {
4020         int err;
4021 
4022         if (mode == priv->ieee->iw_mode)
4023                 return 0;
4024 
4025         err = ipw2100_disable_adapter(priv);
4026         if (err) {
4027                 printk(KERN_ERR DRV_NAME ": %s: Could not disable adapter %d\n",
4028                        priv->net_dev->name, err);
4029                 return err;
4030         }
4031 
4032         switch (mode) {
4033         case IW_MODE_INFRA:
4034                 priv->net_dev->type = ARPHRD_ETHER;
4035                 break;
4036         case IW_MODE_ADHOC:
4037                 priv->net_dev->type = ARPHRD_ETHER;
4038                 break;
4039 #ifdef CONFIG_IPW2100_MONITOR
4040         case IW_MODE_MONITOR:
4041                 priv->last_mode = priv->ieee->iw_mode;
4042                 priv->net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
4043                 break;
4044 #endif                          /* CONFIG_IPW2100_MONITOR */
4045         }
4046 
4047         priv->ieee->iw_mode = mode;
4048 
4049 #ifdef CONFIG_PM
4050         /* Indicate ipw2100_download_firmware download firmware
4051          * from disk instead of memory. */
4052         ipw2100_firmware.version = 0;
4053 #endif
4054 
4055         printk(KERN_INFO "%s: Resetting on mode change.\n", priv->net_dev->name);
4056         priv->reset_backoff = 0;
4057         schedule_reset(priv);
4058 
4059         return 0;
4060 }
4061 
4062 static ssize_t show_internals(struct device *d, struct device_attribute *attr,
4063                               char *buf)
4064 {
4065         struct ipw2100_priv *priv = dev_get_drvdata(d);
4066         int len = 0;
4067 
4068 #define DUMP_VAR(x,y) len += sprintf(buf + len, # x ": %" y "\n", priv-> x)
4069 
4070         if (priv->status & STATUS_ASSOCIATED)
4071                 len += sprintf(buf + len, "connected: %lu\n",
4072                                get_seconds() - priv->connect_start);
4073         else
4074                 len += sprintf(buf + len, "not connected\n");
4075 
4076         DUMP_VAR(ieee->crypt_info.crypt[priv->ieee->crypt_info.tx_keyidx], "p");
4077         DUMP_VAR(status, "08lx");
4078         DUMP_VAR(config, "08lx");
4079         DUMP_VAR(capability, "08lx");
4080 
4081         len +=
4082             sprintf(buf + len, "last_rtc: %lu\n",
4083                     (unsigned long)priv->last_rtc);
4084 
4085         DUMP_VAR(fatal_error, "d");
4086         DUMP_VAR(stop_hang_check, "d");
4087         DUMP_VAR(stop_rf_kill, "d");
4088         DUMP_VAR(messages_sent, "d");
4089 
4090         DUMP_VAR(tx_pend_stat.value, "d");
4091         DUMP_VAR(tx_pend_stat.hi, "d");
4092 
4093         DUMP_VAR(tx_free_stat.value, "d");
4094         DUMP_VAR(tx_free_stat.lo, "d");
4095 
4096         DUMP_VAR(msg_free_stat.value, "d");
4097         DUMP_VAR(msg_free_stat.lo, "d");
4098 
4099         DUMP_VAR(msg_pend_stat.value, "d");
4100         DUMP_VAR(msg_pend_stat.hi, "d");
4101 
4102         DUMP_VAR(fw_pend_stat.value, "d");
4103         DUMP_VAR(fw_pend_stat.hi, "d");
4104 
4105         DUMP_VAR(txq_stat.value, "d");
4106         DUMP_VAR(txq_stat.lo, "d");
4107 
4108         DUMP_VAR(ieee->scans, "d");
4109         DUMP_VAR(reset_backoff, "d");
4110 
4111         return len;
4112 }
4113 
4114 static DEVICE_ATTR(internals, S_IRUGO, show_internals, NULL);
4115 
4116 static ssize_t show_bssinfo(struct device *d, struct device_attribute *attr,
4117                             char *buf)
4118 {
4119         struct ipw2100_priv *priv = dev_get_drvdata(d);
4120         char essid[IW_ESSID_MAX_SIZE + 1];
4121         u8 bssid[ETH_ALEN];
4122         u32 chan = 0;
4123         char *out = buf;
4124         unsigned int length;
4125         int ret;
4126 
4127         if (priv->status & STATUS_RF_KILL_MASK)
4128                 return 0;
4129 
4130         memset(essid, 0, sizeof(essid));
4131         memset(bssid, 0, sizeof(bssid));
4132 
4133         length = IW_ESSID_MAX_SIZE;
4134         ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_SSID, essid, &length);
4135         if (ret)
4136                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
4137                                __LINE__);
4138 
4139         length = sizeof(bssid);
4140         ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID,
4141                                   bssid, &length);
4142         if (ret)
4143                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
4144                                __LINE__);
4145 
4146         length = sizeof(u32);
4147         ret = ipw2100_get_ordinal(priv, IPW_ORD_OUR_FREQ, &chan, &length);
4148         if (ret)
4149                 IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
4150                                __LINE__);
4151 
4152         out += sprintf(out, "ESSID: %s\n", essid);
4153         out += sprintf(out, "BSSID:   %pM\n", bssid);
4154         out += sprintf(out, "Channel: %d\n", chan);
4155 
4156         return out - buf;
4157 }
4158 
4159 static DEVICE_ATTR(bssinfo, S_IRUGO, show_bssinfo, NULL);
4160 
4161 #ifdef CONFIG_IPW2100_DEBUG
4162 static ssize_t show_debug_level(struct device_driver *d, char *buf)
4163 {
4164         return sprintf(buf, "0x%08X\n", ipw2100_debug_level);
4165 }
4166 
4167 static ssize_t store_debug_level(struct device_driver *d,
4168                                  const char *buf, size_t count)
4169 {
4170         u32 val;
4171         int ret;
4172 
4173         ret = kstrtou32(buf, 0, &val);
4174         if (ret)
4175                 IPW_DEBUG_INFO(": %s is not in hex or decimal form.\n", buf);
4176         else
4177                 ipw2100_debug_level = val;
4178 
4179         return strnlen(buf, count);
4180 }
4181 
4182 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, show_debug_level,
4183                    store_debug_level);
4184 #endif                          /* CONFIG_IPW2100_DEBUG */
4185 
4186 static ssize_t show_fatal_error(struct device *d,
4187                                 struct device_attribute *attr, char *buf)
4188 {
4189         struct ipw2100_priv *priv = dev_get_drvdata(d);
4190         char *out = buf;
4191         int i;
4192 
4193         if (priv->fatal_error)
4194                 out += sprintf(out, "0x%08X\n", priv->fatal_error);
4195         else
4196                 out += sprintf(out, "\n");
4197 
4198         for (i = 1; i <= IPW2100_ERROR_QUEUE; i++) {
4199                 if (!priv->fatal_errors[(priv->fatal_index - i) %
4200                                         IPW2100_ERROR_QUEUE])
4201                         continue;
4202 
4203                 out += sprintf(out, "%d. 0x%08X\n", i,
4204                                priv->fatal_errors[(priv->fatal_index - i) %
4205                                                   IPW2100_ERROR_QUEUE]);
4206         }
4207 
4208         return out - buf;
4209 }
4210 
4211 static ssize_t store_fatal_error(struct device *d,
4212                                  struct device_attribute *attr, const char *buf,
4213                                  size_t count)
4214 {
4215         struct ipw2100_priv *priv = dev_get_drvdata(d);
4216         schedule_reset(priv);
4217         return count;
4218 }
4219 
4220 static DEVICE_ATTR(fatal_error, S_IWUSR | S_IRUGO, show_fatal_error,
4221                    store_fatal_error);
4222 
4223 static ssize_t show_scan_age(struct device *d, struct device_attribute *attr,
4224                              char *buf)
4225 {
4226         struct ipw2100_priv *priv = dev_get_drvdata(d);
4227         return sprintf(buf, "%d\n", priv->ieee->scan_age);
4228 }
4229 
4230 static ssize_t store_scan_age(struct device *d, struct device_attribute *attr,
4231                               const char *buf, size_t count)
4232 {
4233         struct ipw2100_priv *priv = dev_get_drvdata(d);
4234         struct net_device *dev = priv->net_dev;
4235         unsigned long val;
4236         int ret;
4237 
4238         (void)dev;              /* kill unused-var warning for debug-only code */
4239 
4240         IPW_DEBUG_INFO("enter\n");
4241 
4242         ret = kstrtoul(buf, 0, &val);
4243         if (ret) {
4244                 IPW_DEBUG_INFO("%s: user supplied invalid value.\n", dev->name);
4245         } else {
4246                 priv->ieee->scan_age = val;
4247                 IPW_DEBUG_INFO("set scan_age = %u\n", priv->ieee->scan_age);
4248         }
4249 
4250         IPW_DEBUG_INFO("exit\n");
4251         return strnlen(buf, count);
4252 }
4253 
4254 static DEVICE_ATTR(scan_age, S_IWUSR | S_IRUGO, show_scan_age, store_scan_age);
4255 
4256 static ssize_t show_rf_kill(struct device *d, struct device_attribute *attr,
4257                             char *buf)
4258 {
4259         /* 0 - RF kill not enabled
4260            1 - SW based RF kill active (sysfs)
4261            2 - HW based RF kill active
4262            3 - Both HW and SW baed RF kill active */
4263         struct ipw2100_priv *priv = dev_get_drvdata(d);
4264         int val = ((priv->status & STATUS_RF_KILL_SW) ? 0x1 : 0x0) |
4265             (rf_kill_active(priv) ? 0x2 : 0x0);
4266         return sprintf(buf, "%i\n", val);
4267 }
4268 
4269 static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio)
4270 {
4271         if ((disable_radio ? 1 : 0) ==
4272             (priv->status & STATUS_RF_KILL_SW ? 1 : 0))
4273                 return 0;
4274 
4275         IPW_DEBUG_RF_KILL("Manual SW RF Kill set to: RADIO  %s\n",
4276                           disable_radio ? "OFF" : "ON");
4277 
4278         mutex_lock(&priv->action_mutex);
4279 
4280         if (disable_radio) {
4281                 priv->status |= STATUS_RF_KILL_SW;
4282                 ipw2100_down(priv);
4283         } else {
4284                 priv->status &= ~STATUS_RF_KILL_SW;
4285                 if (rf_kill_active(priv)) {
4286                         IPW_DEBUG_RF_KILL("Can not turn radio back on - "
4287                                           "disabled by HW switch\n");
4288                         /* Make sure the RF_KILL check timer is running */
4289                         priv->stop_rf_kill = 0;
4290                         mod_delayed_work(system_wq, &priv->rf_kill,
4291                                          round_jiffies_relative(HZ));
4292                 } else
4293                         schedule_reset(priv);
4294         }
4295 
4296         mutex_unlock(&priv->action_mutex);
4297         return 1;
4298 }
4299 
4300 static ssize_t store_rf_kill(struct device *d, struct device_attribute *attr,
4301                              const char *buf, size_t count)
4302 {
4303         struct ipw2100_priv *priv = dev_get_drvdata(d);
4304         ipw_radio_kill_sw(priv, buf[0] == '1');
4305         return count;
4306 }
4307 
4308 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
4309 
4310 static struct attribute *ipw2100_sysfs_entries[] = {
4311         &dev_attr_hardware.attr,
4312         &dev_attr_registers.attr,
4313         &dev_attr_ordinals.attr,
4314         &dev_attr_pci.attr,
4315         &dev_attr_stats.attr,
4316         &dev_attr_internals.attr,
4317         &dev_attr_bssinfo.attr,
4318         &dev_attr_memory.attr,
4319         &dev_attr_scan_age.attr,
4320         &dev_attr_fatal_error.attr,
4321         &dev_attr_rf_kill.attr,
4322         &dev_attr_cfg.attr,
4323         &dev_attr_status.attr,
4324         &dev_attr_capability.attr,
4325         NULL,
4326 };
4327 
4328 static struct attribute_group ipw2100_attribute_group = {
4329         .attrs = ipw2100_sysfs_entries,
4330 };
4331 
4332 static int status_queue_allocate(struct ipw2100_priv *priv, int entries)
4333 {
4334         struct ipw2100_status_queue *q = &priv->status_queue;
4335 
4336         IPW_DEBUG_INFO("enter\n");
4337 
4338         q->size = entries * sizeof(struct ipw2100_status);
4339         q->drv =
4340             (struct ipw2100_status *)pci_alloc_consistent(priv->pci_dev,
4341                                                           q->size, &q->nic);
4342         if (!q->drv) {
4343                 IPW_DEBUG_WARNING("Can not allocate status queue.\n");
4344                 return -ENOMEM;
4345         }
4346 
4347         memset(q->drv, 0, q->size);
4348 
4349         IPW_DEBUG_INFO("exit\n");
4350 
4351         return 0;
4352 }
4353 
4354 static void status_queue_free(struct ipw2100_priv *priv)
4355 {
4356         IPW_DEBUG_INFO("enter\n");
4357 
4358         if (priv->status_queue.drv) {
4359                 pci_free_consistent(priv->pci_dev, priv->status_queue.size,
4360                                     priv->status_queue.drv,
4361                                     priv->status_queue.nic);
4362                 priv->status_queue.drv = NULL;
4363         }
4364 
4365         IPW_DEBUG_INFO("exit\n");
4366 }
4367 
4368 static int bd_queue_allocate(struct ipw2100_priv *priv,
4369                              struct ipw2100_bd_queue *q, int entries)
4370 {
4371         IPW_DEBUG_INFO("enter\n");
4372 
4373         memset(q, 0, sizeof(struct ipw2100_bd_queue));
4374 
4375         q->entries = entries;
4376         q->size = entries * sizeof(struct ipw2100_bd);
4377         q->drv = pci_alloc_consistent(priv->pci_dev, q->size, &q->nic);
4378         if (!q->drv) {
4379                 IPW_DEBUG_INFO
4380                     ("can't allocate shared memory for buffer descriptors\n");
4381                 return -ENOMEM;
4382         }
4383         memset(q->drv, 0, q->size);
4384 
4385         IPW_DEBUG_INFO("exit\n");
4386 
4387         return 0;
4388 }
4389 
4390 static void bd_queue_free(struct ipw2100_priv *priv, struct ipw2100_bd_queue *q)
4391 {
4392         IPW_DEBUG_INFO("enter\n");
4393 
4394         if (!q)
4395                 return;
4396 
4397         if (q->drv) {
4398                 pci_free_consistent(priv->pci_dev, q->size, q->drv, q->nic);
4399                 q->drv = NULL;
4400         }
4401 
4402         IPW_DEBUG_INFO("exit\n");
4403 }
4404 
4405 static void bd_queue_initialize(struct ipw2100_priv *priv,
4406                                 struct ipw2100_bd_queue *q, u32 base, u32 size,
4407                                 u32 r, u32 w)
4408 {
4409         IPW_DEBUG_INFO("enter\n");
4410 
4411         IPW_DEBUG_INFO("initializing bd queue at virt=%p, phys=%08x\n", q->drv,
4412                        (u32) q->nic);
4413 
4414         write_register(priv->net_dev, base, q->nic);
4415         write_register(priv->net_dev, size, q->entries);
4416         write_register(priv->net_dev, r, q->oldest);
4417         write_register(priv->net_dev, w, q->next);
4418 
4419         IPW_DEBUG_INFO("exit\n");
4420 }
4421 
4422 static void ipw2100_kill_works(struct ipw2100_priv *priv)
4423 {
4424         priv->stop_rf_kill = 1;
4425         priv->stop_hang_check = 1;
4426         cancel_delayed_work_sync(&priv->reset_work);
4427         cancel_delayed_work_sync(&priv->security_work);
4428         cancel_delayed_work_sync(&priv->wx_event_work);
4429         cancel_delayed_work_sync(&priv->hang_check);
4430         cancel_delayed_work_sync(&priv->rf_kill);
4431         cancel_delayed_work_sync(&priv->scan_event);
4432 }
4433 
4434 static int ipw2100_tx_allocate(struct ipw2100_priv *priv)
4435 {
4436         int i, j, err = -EINVAL;
4437         void *v;
4438         dma_addr_t p;
4439 
4440         IPW_DEBUG_INFO("enter\n");
4441 
4442         err = bd_queue_allocate(priv, &priv->tx_queue, TX_QUEUE_LENGTH);
4443         if (err) {
4444                 IPW_DEBUG_ERROR("%s: failed bd_queue_allocate\n",
4445                                 priv->net_dev->name);
4446                 return err;
4447         }
4448 
4449         priv->tx_buffers = kmalloc_array(TX_PENDED_QUEUE_LENGTH,
4450                                          sizeof(struct ipw2100_tx_packet),
4451                                          GFP_ATOMIC);
4452         if (!priv->tx_buffers) {
4453                 bd_queue_free(priv, &priv->tx_queue);
4454                 return -ENOMEM;
4455         }
4456 
4457         for (i = 0; i < TX_PENDED_QUEUE_LENGTH; i++) {
4458                 v = pci_alloc_consistent(priv->pci_dev,
4459                                          sizeof(struct ipw2100_data_header),
4460                                          &p);
4461                 if (!v) {
4462                         printk(KERN_ERR DRV_NAME
4463                                ": %s: PCI alloc failed for tx " "buffers.\n",
4464                                priv->net_dev->name);
4465                         err = -ENOMEM;
4466                         break;
4467                 }
4468 
4469                 priv->tx_buffers[i].type = DATA;
4470                 priv->tx_buffers[i].info.d_struct.data =
4471                     (struct ipw2100_data_header *)v;
4472                 priv->tx_buffers[i].info.d_struct.data_phys = p;
4473                 priv->tx_buffers[i].info.d_struct.txb = NULL;
4474         }
4475 
4476         if (i == TX_PENDED_QUEUE_LENGTH)
4477                 return 0;
4478 
4479         for (j = 0; j < i; j++) {
4480                 pci_free_consistent(priv->pci_dev,
4481                                     sizeof(struct ipw2100_data_header),
4482                                     priv->tx_buffers[j].info.d_struct.data,
4483                                     priv->tx_buffers[j].info.d_struct.
4484                                     data_phys);
4485         }
4486 
4487         kfree(priv->tx_buffers);
4488         priv->tx_buffers = NULL;
4489 
4490         return err;
4491 }
4492 
4493 static void ipw2100_tx_initialize(struct ipw2100_priv *priv)
4494 {
4495         int i;
4496 
4497         IPW_DEBUG_INFO("enter\n");
4498 
4499         /*
4500          * reinitialize packet info lists
4501          */
4502         INIT_LIST_HEAD(&priv->fw_pend_list);
4503         INIT_STAT(&priv->fw_pend_stat);
4504 
4505         /*
4506          * reinitialize lists
4507          */
4508         INIT_LIST_HEAD(&priv->tx_pend_list);
4509         INIT_LIST_HEAD(&priv->tx_free_list);
4510         INIT_STAT(&priv->tx_pend_stat);
4511         INIT_STAT(&priv->tx_free_stat);
4512 
4513         for (i = 0; i < TX_PENDED_QUEUE_LENGTH; i++) {
4514                 /* We simply drop any SKBs that have been queued for
4515                  * transmit */
4516                 if (priv->tx_buffers[i].info.d_struct.txb) {
4517                         libipw_txb_free(priv->tx_buffers[i].info.d_struct.
4518                                            txb);
4519                         priv->tx_buffers[i].info.d_struct.txb = NULL;
4520                 }
4521 
4522                 list_add_tail(&priv->tx_buffers[i].list, &priv->tx_free_list);
4523         }
4524 
4525         SET_STAT(&priv->tx_free_stat, i);
4526 
4527         priv->tx_queue.oldest = 0;
4528         priv->tx_queue.available = priv->tx_queue.entries;
4529         priv->tx_queue.next = 0;
4530         INIT_STAT(&priv->txq_stat);
4531         SET_STAT(&priv->txq_stat, priv->tx_queue.available);
4532 
4533         bd_queue_initialize(priv, &priv->tx_queue,
4534                             IPW_MEM_HOST_SHARED_TX_QUEUE_BD_BASE,
4535                             IPW_MEM_HOST_SHARED_TX_QUEUE_BD_SIZE,
4536                             IPW_MEM_HOST_SHARED_TX_QUEUE_READ_INDEX,
4537                             IPW_MEM_HOST_SHARED_TX_QUEUE_WRITE_INDEX);
4538 
4539         IPW_DEBUG_INFO("exit\n");
4540 
4541 }
4542 
4543 static void ipw2100_tx_free(struct ipw2100_priv *priv)
4544 {
4545         int i;
4546 
4547         IPW_DEBUG_INFO("enter\n");
4548 
4549         bd_queue_free(priv, &priv->tx_queue);
4550 
4551         if (!priv->tx_buffers)
4552                 return;
4553 
4554         for (i = 0; i < TX_PENDED_QUEUE_LENGTH; i++) {
4555                 if (priv->tx_buffers[i].info.d_struct.txb) {
4556                         libipw_txb_free(priv->tx_buffers[i].info.d_struct.
4557                                            txb);
4558                         priv->tx_buffers[i].info.d_struct.txb = NULL;
4559                 }
4560                 if (priv->tx_buffers[i].info.d_struct.data)
4561                         pci_free_consistent(priv->pci_dev,
4562                                             sizeof(struct ipw2100_data_header),
4563                                             priv->tx_buffers[i].info.d_struct.
4564                                             data,
4565                                             priv->tx_buffers[i].info.d_struct.
4566                                             data_phys);
4567         }
4568 
4569         kfree(priv->tx_buffers);
4570         priv->tx_buffers = NULL;
4571 
4572         IPW_DEBUG_INFO("exit\n");
4573 }
4574 
4575 static int ipw2100_rx_allocate(struct ipw2100_priv *priv)
4576 {
4577         int i, j, err = -EINVAL;
4578 
4579         IPW_DEBUG_INFO("enter\n");
4580 
4581         err = bd_queue_allocate(priv, &priv->rx_queue, RX_QUEUE_LENGTH);
4582         if (err) {
4583                 IPW_DEBUG_INFO("failed bd_queue_allocate\n");
4584                 return err;
4585         }
4586 
4587         err = status_queue_allocate(priv, RX_QUEUE_LENGTH);
4588         if (err) {
4589                 IPW_DEBUG_INFO("failed status_queue_allocate\n");
4590                 bd_queue_free(priv, &priv->rx_queue);
4591                 return err;
4592         }
4593 
4594         /*
4595          * allocate packets
4596          */
4597         priv->rx_buffers = kmalloc(RX_QUEUE_LENGTH *
4598                                    sizeof(struct ipw2100_rx_packet),
4599                                    GFP_KERNEL);
4600         if (!priv->rx_buffers) {
4601                 IPW_DEBUG_INFO("can't allocate rx packet buffer table\n");
4602 
4603                 bd_queue_free(priv, &priv->rx_queue);
4604 
4605                 status_queue_free(priv);
4606 
4607                 return -ENOMEM;
4608         }
4609 
4610         for (i = 0; i < RX_QUEUE_LENGTH; i++) {
4611                 struct ipw2100_rx_packet *packet = &priv->rx_buffers[i];
4612 
4613                 err = ipw2100_alloc_skb(priv, packet);
4614                 if (unlikely(err)) {
4615                         err = -ENOMEM;
4616                         break;
4617                 }
4618 
4619                 /* The BD holds the cache aligned address */
4620                 priv->rx_queue.drv[i].host_addr = packet->dma_addr;
4621                 priv->rx_queue.drv[i].buf_length = IPW_RX_NIC_BUFFER_LENGTH;
4622                 priv->status_queue.drv[i].status_fields = 0;
4623         }
4624 
4625         if (i == RX_QUEUE_LENGTH)
4626                 return 0;
4627 
4628         for (j = 0; j < i; j++) {
4629                 pci_unmap_single(priv->pci_dev, priv->rx_buffers[j].dma_addr,
4630                                  sizeof(struct ipw2100_rx_packet),
4631                                  PCI_DMA_FROMDEVICE);
4632                 dev_kfree_skb(priv->rx_buffers[j].skb);
4633         }
4634 
4635         kfree(priv->rx_buffers);
4636         priv->rx_buffers = NULL;
4637 
4638         bd_queue_free(priv, &priv->rx_queue);
4639 
4640         status_queue_free(priv);
4641 
4642         return err;
4643 }
4644 
4645 static void ipw2100_rx_initialize(struct ipw2100_priv *priv)
4646 {
4647         IPW_DEBUG_INFO("enter\n");
4648 
4649         priv->rx_queue.oldest = 0;
4650         priv->rx_queue.available = priv->rx_queue.entries - 1;
4651         priv->rx_queue.next = priv->rx_queue.entries - 1;
4652 
4653         INIT_STAT(&priv->rxq_stat);
4654         SET_STAT(&priv->rxq_stat, priv->rx_queue.available);
4655 
4656         bd_queue_initialize(priv, &priv->rx_queue,
4657                             IPW_MEM_HOST_SHARED_RX_BD_BASE,
4658                             IPW_MEM_HOST_SHARED_RX_BD_SIZE,
4659                             IPW_MEM_HOST_SHARED_RX_READ_INDEX,
4660                             IPW_MEM_HOST_SHARED_RX_WRITE_INDEX);
4661 
4662         /* set up the status queue */
4663         write_register(priv->net_dev, IPW_MEM_HOST_SHARED_RX_STATUS_BASE,
4664                        priv->status_queue.nic);
4665 
4666         IPW_DEBUG_INFO("exit\n");
4667 }
4668 
4669 static void ipw2100_rx_free(struct ipw2100_priv *priv)
4670 {
4671         int i;
4672 
4673         IPW_DEBUG_INFO("enter\n");
4674 
4675         bd_queue_free(priv, &priv->rx_queue);
4676         status_queue_free(priv);
4677 
4678         if (!priv->rx_buffers)
4679                 return;
4680 
4681         for (i = 0; i < RX_QUEUE_LENGTH; i++) {
4682                 if (priv->rx_buffers[i].rxp) {
4683                         pci_unmap_single(priv->pci_dev,
4684                                          priv->rx_buffers[i].dma_addr,
4685                                          sizeof(struct ipw2100_rx),
4686                                          PCI_DMA_FROMDEVICE);
4687                         dev_kfree_skb(priv->rx_buffers[i].skb);
4688                 }
4689         }
4690 
4691         kfree(priv->rx_buffers);
4692         priv->rx_buffers = NULL;
4693 
4694         IPW_DEBUG_INFO("exit\n");
4695 }
4696 
4697 static int ipw2100_read_mac_address(struct ipw2100_priv *priv)
4698 {
4699         u32 length = ETH_ALEN;
4700         u8 addr[ETH_ALEN];
4701 
4702         int err;
4703 
4704         err = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ADAPTER_MAC, addr, &length);
4705         if (err) {
4706                 IPW_DEBUG_INFO("MAC address read failed\n");
4707                 return -EIO;
4708         }
4709 
4710         memcpy(priv->net_dev->dev_addr, addr, ETH_ALEN);
4711         IPW_DEBUG_INFO("card MAC is %pM\n", priv->net_dev->dev_addr);
4712 
4713         return 0;
4714 }
4715 
4716 /********************************************************************
4717  *
4718  * Firmware Commands
4719  *
4720  ********************************************************************/
4721 
4722 static int ipw2100_set_mac_address(struct ipw2100_priv *priv, int batch_mode)
4723 {
4724         struct host_command cmd = {
4725                 .host_command = ADAPTER_ADDRESS,
4726                 .host_command_sequence = 0,
4727                 .host_command_length = ETH_ALEN
4728         };
4729         int err;
4730 
4731         IPW_DEBUG_HC("SET_MAC_ADDRESS\n");
4732 
4733         IPW_DEBUG_INFO("enter\n");
4734 
4735         if (priv->config & CFG_CUSTOM_MAC) {
4736                 memcpy(cmd.host_command_parameters, priv->mac_addr, ETH_ALEN);
4737                 memcpy(priv->net_dev->dev_addr, priv->mac_addr, ETH_ALEN);
4738         } else
4739                 memcpy(cmd.host_command_parameters, priv->net_dev->dev_addr,
4740                        ETH_ALEN);
4741 
4742         err = ipw2100_hw_send_command(priv, &cmd);
4743 
4744         IPW_DEBUG_INFO("exit\n");
4745         return err;
4746 }
4747 
4748 static int ipw2100_set_port_type(struct ipw2100_priv *priv, u32 port_type,
4749                                  int batch_mode)
4750 {
4751         struct host_command cmd = {
4752                 .host_command = PORT_TYPE,
4753                 .host_command_sequence = 0,
4754                 .host_command_length = sizeof(u32)
4755         };
4756         int err;
4757 
4758         switch (port_type) {
4759         case IW_MODE_INFRA:
4760                 cmd.host_command_parameters[0] = IPW_BSS;
4761                 break;
4762         case IW_MODE_ADHOC:
4763                 cmd.host_command_parameters[0] = IPW_IBSS;
4764                 break;
4765         }
4766 
4767         IPW_DEBUG_HC("PORT_TYPE: %s\n",
4768                      port_type == IPW_IBSS ? "Ad-Hoc" : "Managed");
4769 
4770         if (!batch_mode) {
4771                 err = ipw2100_disable_adapter(priv);
4772                 if (err) {
4773                         printk(KERN_ERR DRV_NAME
4774                                ": %s: Could not disable adapter %d\n",
4775                                priv->net_dev->name, err);
4776                         return err;
4777                 }
4778         }
4779 
4780         /* send cmd to firmware */
4781         err = ipw2100_hw_send_command(priv, &cmd);
4782 
4783         if (!batch_mode)
4784                 ipw2100_enable_adapter(priv);
4785 
4786         return err;
4787 }
4788 
4789 static int ipw2100_set_channel(struct ipw2100_priv *priv, u32 channel,
4790                                int batch_mode)
4791 {
4792         struct host_command cmd = {
4793                 .host_command = CHANNEL,
4794                 .host_command_sequence = 0,
4795                 .host_command_length = sizeof(u32)
4796         };
4797         int err;
4798 
4799         cmd.host_command_parameters[0] = channel;
4800 
4801         IPW_DEBUG_HC("CHANNEL: %d\n", channel);
4802 
4803         /* If BSS then we don't support channel selection */
4804         if (priv->ieee->iw_mode == IW_MODE_INFRA)
4805                 return 0;
4806 
4807         if ((channel != 0) &&
4808             ((channel < REG_MIN_CHANNEL) || (channel > REG_MAX_CHANNEL)))
4809                 return -EINVAL;
4810 
4811         if (!batch_mode) {
4812                 err = ipw2100_disable_adapter(priv);
4813                 if (err)
4814                         return err;
4815         }
4816 
4817         err = ipw2100_hw_send_command(priv, &cmd);
4818         if (err) {
4819                 IPW_DEBUG_INFO("Failed to set channel to %d", channel);
4820                 return err;
4821         }
4822 
4823         if (channel)
4824                 priv->config |= CFG_STATIC_CHANNEL;
4825         else
4826                 priv->config &= ~CFG_STATIC_CHANNEL;
4827 
4828         priv->channel = channel;
4829 
4830         if (!batch_mode) {
4831                 err = ipw2100_enable_adapter(priv);
4832                 if (err)
4833                         return err;
4834         }
4835 
4836         return 0;
4837 }
4838 
4839 static int ipw2100_system_config(struct ipw2100_priv *priv, int batch_mode)
4840 {
4841         struct host_command cmd = {
4842                 .host_command = SYSTEM_CONFIG,
4843                 .host_command_sequence = 0,
4844                 .host_command_length = 12,
4845         };
4846         u32 ibss_mask, len = sizeof(u32);
4847         int err;
4848 
4849         /* Set system configuration */
4850 
4851         if (!batch_mode) {
4852                 err = ipw2100_disable_adapter(priv);
4853                 if (err)
4854                         return err;
4855         }
4856 
4857         if (priv->ieee->iw_mode == IW_MODE_ADHOC)
4858                 cmd.host_command_parameters[0] |= IPW_CFG_IBSS_AUTO_START;
4859 
4860         cmd.host_command_parameters[0] |= IPW_CFG_IBSS_MASK |
4861             IPW_CFG_BSS_MASK | IPW_CFG_802_1x_ENABLE;
4862 
4863         if (!(priv->config & CFG_LONG_PREAMBLE))
4864                 cmd.host_command_parameters[0] |= IPW_CFG_PREAMBLE_AUTO;
4865 
4866         err = ipw2100_get_ordinal(priv,
4867                                   IPW_ORD_EEPROM_IBSS_11B_CHANNELS,
4868                                   &ibss_mask, &len);
4869         if (err)
4870                 ibss_mask = IPW_IBSS_11B_DEFAULT_MASK;
4871 
4872         cmd.host_command_parameters[1] = REG_CHANNEL_MASK;
4873         cmd.host_command_parameters[2] = REG_CHANNEL_MASK & ibss_mask;
4874 
4875         /* 11b only */
4876         /*cmd.host_command_parameters[0] |= DIVERSITY_ANTENNA_A; */
4877 
4878         err = ipw2100_hw_send_command(priv, &cmd);
4879         if (err)
4880                 return err;
4881 
4882 /* If IPv6 is configured in the kernel then we don't want to filter out all
4883  * of the multicast packets as IPv6 needs some. */
4884 #if !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
4885         cmd.host_command = ADD_MULTICAST;
4886         cmd.host_command_sequence = 0;
4887         cmd.host_command_length = 0;
4888 
4889         ipw2100_hw_send_command(priv, &cmd);
4890 #endif
4891         if (!batch_mode) {
4892                 err = ipw2100_enable_adapter(priv);
4893                 if (err)
4894                         return err;
4895         }
4896 
4897         return 0;
4898 }
4899 
4900 static int ipw2100_set_tx_rates(struct ipw2100_priv *priv, u32 rate,
4901                                 int batch_mode)
4902 {
4903         struct host_command cmd = {
4904                 .host_command = BASIC_TX_RATES,
4905                 .host_command_sequence = 0,
4906                 .host_command_length = 4
4907         };
4908         int err;
4909 
4910         cmd.host_command_parameters[0] = rate & TX_RATE_MASK;
4911 
4912         if (!batch_mode) {
4913                 err = ipw2100_disable_adapter(priv);
4914                 if (err)
4915                         return err;
4916         }
4917 
4918         /* Set BASIC TX Rate first */
4919         ipw2100_hw_send_command(priv, &cmd);
4920 
4921         /* Set TX Rate */
4922         cmd.host_command = TX_RATES;
4923         ipw2100_hw_send_command(priv, &cmd);
4924 
4925         /* Set MSDU TX Rate */
4926         cmd.host_command = MSDU_TX_RATES;
4927         ipw2100_hw_send_command(priv, &cmd);
4928 
4929         if (!batch_mode) {
4930                 err = ipw2100_enable_adapter(priv);
4931                 if (err)
4932                         return err;
4933         }
4934 
4935         priv->tx_rates = rate;
4936 
4937         return 0;
4938 }
4939 
4940 static int ipw2100_set_power_mode(struct ipw2100_priv *priv, int power_level)
4941 {
4942         struct host_command cmd = {
4943                 .host_command = POWER_MODE,
4944                 .host_command_sequence = 0,
4945                 .host_command_length = 4
4946         };
4947         int err;
4948 
4949         cmd.host_command_parameters[0] = power_level;
4950 
4951         err = ipw2100_hw_send_command(priv, &cmd);
4952         if (err)
4953                 return err;
4954 
4955         if (power_level == IPW_POWER_MODE_CAM)
4956                 priv->power_mode = IPW_POWER_LEVEL(priv->power_mode);
4957         else
4958                 priv->power_mode = IPW_POWER_ENABLED | power_level;
4959 
4960 #ifdef IPW2100_TX_POWER
4961         if (priv->port_type == IBSS && priv->adhoc_power != DFTL_IBSS_TX_POWER) {
4962                 /* Set beacon interval */
4963                 cmd.host_command = TX_POWER_INDEX;
4964                 cmd.host_command_parameters[0] = (u32) priv->adhoc_power;
4965 
4966                 err = ipw2100_hw_send_command(priv, &cmd);
4967                 if (err)
4968                         return err;
4969         }
4970 #endif
4971 
4972         return 0;
4973 }
4974 
4975 static int ipw2100_set_rts_threshold(struct ipw2100_priv *priv, u32 threshold)
4976 {
4977         struct host_command cmd = {
4978                 .host_command = RTS_THRESHOLD,
4979                 .host_command_sequence = 0,
4980                 .host_command_length = 4
4981         };
4982         int err;
4983 
4984         if (threshold & RTS_DISABLED)
4985                 cmd.host_command_parameters[0] = MAX_RTS_THRESHOLD;
4986         else
4987                 cmd.host_command_parameters[0] = threshold & ~RTS_DISABLED;
4988 
4989         err = ipw2100_hw_send_command(priv, &cmd);
4990         if (err)
4991                 return err;
4992 
4993         priv->rts_threshold = threshold;
4994 
4995         return 0;
4996 }
4997 
4998 #if 0
4999 int ipw2100_set_fragmentation_threshold(struct ipw2100_priv *priv,
5000                                         u32 threshold, int batch_mode)
5001 {
5002         struct host_command cmd = {
5003                 .host_command = FRAG_THRESHOLD,
5004                 .host_command_sequence = 0,
5005                 .host_command_length = 4,
5006                 .host_command_parameters[0] = 0,
5007         };
5008         int err;
5009 
5010         if (!batch_mode) {
5011                 err = ipw2100_disable_adapter(priv);
5012                 if (err)
5013                         return err;
5014         }
5015 
5016         if (threshold == 0)
5017                 threshold = DEFAULT_FRAG_THRESHOLD;
5018         else {
5019                 threshold = max(threshold, MIN_FRAG_THRESHOLD);
5020                 threshold = min(threshold, MAX_FRAG_THRESHOLD);
5021         }
5022 
5023         cmd.host_command_parameters[0] = threshold;
5024 
5025         IPW_DEBUG_HC("FRAG_THRESHOLD: %u\n", threshold);
5026 
5027         err = ipw2100_hw_send_command(priv, &cmd);
5028 
5029         if (!batch_mode)
5030                 ipw2100_enable_adapter(priv);
5031 
5032         if (!err)
5033                 priv->frag_threshold = threshold;
5034 
5035         return err;
5036 }
5037 #endif
5038 
5039 static int ipw2100_set_short_retry(struct ipw2100_priv *priv, u32 retry)
5040 {
5041         struct host_command cmd = {
5042                 .host_command = SHORT_RETRY_LIMIT,
5043                 .host_command_sequence = 0,
5044                 .host_command_length = 4
5045         };
5046         int err;
5047 
5048         cmd.host_command_parameters[0] = retry;
5049 
5050         err = ipw2100_hw_send_command(priv, &cmd);
5051         if (err)
5052                 return err;
5053 
5054         priv->short_retry_limit = retry;
5055 
5056         return 0;
5057 }
5058 
5059 static int ipw2100_set_long_retry(struct ipw2100_priv *priv, u32 retry)
5060 {
5061         struct host_command cmd = {
5062                 .host_command = LONG_RETRY_LIMIT,
5063                 .host_command_sequence = 0,
5064                 .host_command_length = 4
5065         };
5066         int err;
5067 
5068         cmd.host_command_parameters[0] = retry;
5069 
5070         err = ipw2100_hw_send_command(priv, &cmd);
5071         if (err)
5072                 return err;
5073 
5074         priv->long_retry_limit = retry;
5075 
5076         return 0;
5077 }
5078 
5079 static int ipw2100_set_mandatory_bssid(struct ipw2100_priv *priv, u8 * bssid,
5080                                        int batch_mode)
5081 {
5082         struct host_command cmd = {
5083                 .host_command = MANDATORY_BSSID,
5084                 .host_command_sequence = 0,
5085                 .host_command_length = (bssid == NULL) ? 0 : ETH_ALEN
5086         };
5087         int err;
5088 
5089 #ifdef CONFIG_IPW2100_DEBUG
5090         if (bssid != NULL)
5091                 IPW_DEBUG_HC("MANDATORY_BSSID: %pM\n", bssid);
5092         else
5093                 IPW_DEBUG_HC("MANDATORY_BSSID: <clear>\n");
5094 #endif
5095         /* if BSSID is empty then we disable mandatory bssid mode */
5096         if (bssid != NULL)
5097                 memcpy(cmd.host_command_parameters, bssid, ETH_ALEN);
5098 
5099         if (!batch_mode) {
5100                 err = ipw2100_disable_adapter(priv);
5101                 if (err)
5102                         return err;
5103         }
5104 
5105         err = ipw2100_hw_send_command(priv, &cmd);
5106 
5107         if (!batch_mode)
5108                 ipw2100_enable_adapter(priv);
5109 
5110         return err;
5111 }
5112 
5113 static int ipw2100_disassociate_bssid(struct ipw2100_priv *priv)
5114 {
5115         struct host_command cmd = {
5116                 .host_command = DISASSOCIATION_BSSID,
5117                 .host_command_sequence = 0,
5118                 .host_command_length = ETH_ALEN
5119         };
5120         int err;
5121         int len;
5122 
5123         IPW_DEBUG_HC("DISASSOCIATION_BSSID\n");
5124 
5125         len = ETH_ALEN;
5126         /* The Firmware currently ignores the BSSID and just disassociates from
5127          * the currently associated AP -- but in the off chance that a future
5128          * firmware does use the BSSID provided here, we go ahead and try and
5129          * set it to the currently associated AP's BSSID */
5130         memcpy(cmd.host_command_parameters, priv->bssid, ETH_ALEN);
5131 
5132         err = ipw2100_hw_send_command(priv, &cmd);
5133 
5134         return err;
5135 }
5136 
5137 static int ipw2100_set_wpa_ie(struct ipw2100_priv *,
5138                               struct ipw2100_wpa_assoc_frame *, int)
5139     __attribute__ ((unused));
5140 
5141 static int ipw2100_set_wpa_ie(struct ipw2100_priv *priv,
5142                               struct ipw2100_wpa_assoc_frame *wpa_frame,
5143                               int batch_mode)
5144 {
5145         struct host_command cmd = {
5146                 .host_command = SET_WPA_IE,
5147                 .host_command_sequence = 0,
5148                 .host_command_length = sizeof(struct ipw2100_wpa_assoc_frame),
5149         };
5150         int err;
5151 
5152         IPW_DEBUG_HC("SET_WPA_IE\n");
5153 
5154         if (!batch_mode) {
5155                 err = ipw2100_disable_adapter(priv);
5156                 if (err)
5157                         return err;
5158         }
5159 
5160         memcpy(cmd.host_command_parameters, wpa_frame,
5161                sizeof(struct ipw2100_wpa_assoc_frame));
5162 
5163         err = ipw2100_hw_send_command(priv, &cmd);
5164 
5165         if (!batch_mode) {
5166                 if (ipw2100_enable_adapter(priv))
5167                         err = -EIO;
5168         }
5169 
5170         return err;
5171 }
5172 
5173 struct security_info_params {
5174         u32 allowed_ciphers;
5175         u16 version;
5176         u8 auth_mode;
5177         u8 replay_counters_number;
5178         u8 unicast_using_group;
5179 } __packed;
5180 
5181 static int ipw2100_set_security_information(struct ipw2100_priv *priv,
5182                                             int auth_mode,
5183                                             int security_level,
5184                                             int unicast_using_group,
5185                                             int batch_mode)
5186 {
5187         struct host_command cmd = {
5188                 .host_command = SET_SECURITY_INFORMATION,
5189                 .host_command_sequence = 0,
5190                 .host_command_length = sizeof(struct security_info_params)
5191         };
5192         struct security_info_params *security =
5193             (struct security_info_params *)&cmd.host_command_parameters;
5194         int err;
5195         memset(security, 0, sizeof(*security));
5196 
5197         /* If shared key AP authentication is turned on, then we need to
5198          * configure the firmware to try and use it.
5199          *
5200          * Actual data encryption/decryption is handled by the host. */
5201         security->auth_mode = auth_mode;
5202         security->unicast_using_group = unicast_using_group;
5203 
5204         switch (security_level) {
5205         default:
5206         case SEC_LEVEL_0:
5207                 security->allowed_ciphers = IPW_NONE_CIPHER;
5208                 break;
5209         case SEC_LEVEL_1:
5210                 security->allowed_ciphers = IPW_WEP40_CIPHER |
5211                     IPW_WEP104_CIPHER;
5212                 break;
5213         case SEC_LEVEL_2:
5214                 security->allowed_ciphers = IPW_WEP40_CIPHER |
5215                     IPW_WEP104_CIPHER | IPW_TKIP_CIPHER;
5216                 break;
5217         case SEC_LEVEL_2_CKIP:
5218                 security->allowed_ciphers = IPW_WEP40_CIPHER |
5219                     IPW_WEP104_CIPHER | IPW_CKIP_CIPHER;
5220                 break;
5221         case SEC_LEVEL_3:
5222                 security->allowed_ciphers = IPW_WEP40_CIPHER |
5223                     IPW_WEP104_CIPHER | IPW_TKIP_CIPHER | IPW_CCMP_CIPHER;
5224                 break;
5225         }
5226 
5227         IPW_DEBUG_HC
5228             ("SET_SECURITY_INFORMATION: auth:%d cipher:0x%02X (level %d)\n",
5229              security->auth_mode, security->allowed_ciphers, security_level);
5230 
5231         security->replay_counters_number = 0;
5232 
5233         if (!batch_mode) {
5234                 err = ipw2100_disable_adapter(priv);
5235                 if (err)
5236                         return err;
5237         }
5238 
5239         err = ipw2100_hw_send_command(priv, &cmd);
5240 
5241         if (!batch_mode)
5242                 ipw2100_enable_adapter(priv);
5243 
5244         return err;
5245 }
5246 
5247 static int ipw2100_set_tx_power(struct ipw2100_priv *priv, u32 tx_power)
5248 {
5249         struct host_command cmd = {
5250                 .host_command = TX_POWER_INDEX,
5251                 .host_command_sequence = 0,
5252                 .host_command_length = 4
5253         };
5254         int err = 0;
5255         u32 tmp = tx_power;
5256 
5257         if (tx_power != IPW_TX_POWER_DEFAULT)
5258                 tmp = (tx_power - IPW_TX_POWER_MIN_DBM) * 16 /
5259                       (IPW_TX_POWER_MAX_DBM - IPW_TX_POWER_MIN_DBM);
5260 
5261         cmd.host_command_parameters[0] = tmp;
5262 
5263         if (priv->ieee->iw_mode == IW_MODE_ADHOC)
5264                 err = ipw2100_hw_send_command(priv, &cmd);
5265         if (!err)
5266                 priv->tx_power = tx_power;
5267 
5268         return 0;
5269 }
5270 
5271 static int ipw2100_set_ibss_beacon_interval(struct ipw2100_priv *priv,
5272                                             u32 interval, int batch_mode)
5273 {
5274         struct host_command cmd = {
5275                 .host_command = BEACON_INTERVAL,
5276                 .host_command_sequence = 0,
5277                 .host_command_length = 4
5278         };
5279         int err;
5280 
5281         cmd.host_command_parameters[0] = interval;
5282 
5283         IPW_DEBUG_INFO("enter\n");
5284 
5285         if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
5286                 if (!batch_mode) {
5287                         err = ipw2100_disable_adapter(priv);
5288                         if (err)
5289                                 return err;
5290                 }
5291 
5292                 ipw2100_hw_send_command(priv, &cmd);
5293 
5294                 if (!batch_mode) {
5295                         err = ipw2100_enable_adapter(priv);
5296                         if (err)
5297                                 return err;
5298                 }
5299         }
5300 
5301         IPW_DEBUG_INFO("exit\n");
5302 
5303         return 0;
5304 }
5305 
5306 static void ipw2100_queues_initialize(struct ipw2100_priv *priv)
5307 {
5308         ipw2100_tx_initialize(priv);
5309         ipw2100_rx_initialize(priv);
5310         ipw2100_msg_initialize(priv);
5311 }
5312 
5313 static void ipw2100_queues_free(struct ipw2100_priv *priv)
5314 {
5315         ipw2100_tx_free(priv);
5316         ipw2100_rx_free(priv);
5317         ipw2100_msg_free(priv);
5318 }
5319 
5320 static int ipw2100_queues_allocate(struct ipw2100_priv *priv)
5321 {
5322         if (ipw2100_tx_allocate(priv) ||
5323             ipw2100_rx_allocate(priv) || ipw2100_msg_allocate(priv))
5324                 goto fail;
5325 
5326         return 0;
5327 
5328       fail:
5329         ipw2100_tx_free(priv);
5330         ipw2100_rx_free(priv);
5331         ipw2100_msg_free(priv);
5332         return -ENOMEM;
5333 }
5334 
5335 #define IPW_PRIVACY_CAPABLE 0x0008
5336 
5337 static int ipw2100_set_wep_flags(struct ipw2100_priv *priv, u32 flags,
5338                                  int batch_mode)
5339 {
5340         struct host_command cmd = {
5341                 .host_command = WEP_FLAGS,
5342                 .host_command_sequence = 0,
5343                 .host_command_length = 4
5344         };
5345         int err;
5346 
5347         cmd.host_command_parameters[0] = flags;
5348 
5349         IPW_DEBUG_HC("WEP_FLAGS: flags = 0x%08X\n", flags);
5350 
5351         if (!batch_mode) {
5352                 err = ipw2100_disable_adapter(priv);
5353                 if (err) {
5354                         printk(KERN_ERR DRV_NAME
5355                                ": %s: Could not disable adapter %d\n",
5356                                priv->net_dev->name, err);
5357                         return err;
5358                 }
5359         }
5360 
5361         /* send cmd to firmware */
5362         err = ipw2100_hw_send_command(priv, &cmd);
5363 
5364         if (!batch_mode)
5365                 ipw2100_enable_adapter(priv);
5366 
5367         return err;
5368 }
5369 
5370 struct ipw2100_wep_key {
5371         u8 idx;
5372         u8 len;
5373         u8 key[13];
5374 };
5375 
5376 /* Macros to ease up priting WEP keys */
5377 #define WEP_FMT_64  "%02X%02X%02X%02X-%02X"
5378 #define WEP_FMT_128 "%02X%02X%02X%02X-%02X%02X%02X%02X-%02X%02X%02X"
5379 #define WEP_STR_64(x) x[0],x[1],x[2],x[3],x[4]
5380 #define WEP_STR_128(x) x[0],x[1],x[2],x[3],x[4],x[5],x[6],x[7],x[8],x[9],x[10]
5381 
5382 /**
5383  * Set a the wep key
5384  *
5385  * @priv: struct to work on
5386  * @idx: index of the key we want to set
5387  * @key: ptr to the key data to set
5388  * @len: length of the buffer at @key
5389  * @batch_mode: FIXME perform the operation in batch mode, not
5390  *              disabling the device.
5391  *
5392  * @returns 0 if OK, < 0 errno code on error.
5393  *
5394  * Fill out a command structure with the new wep key, length an
5395  * index and send it down the wire.
5396  */
5397 static int ipw2100_set_key(struct ipw2100_priv *priv,
5398                            int idx, char *key, int len, int batch_mode)
5399 {
5400         int keylen = len ? (len <= 5 ? 5 : 13) : 0;
5401         struct host_command cmd = {
5402                 .host_command = WEP_KEY_INFO,
5403                 .host_command_sequence = 0,
5404                 .host_command_length = sizeof(struct ipw2100_wep_key),
5405         };
5406         struct ipw2100_wep_key *wep_key = (void *)cmd.host_command_parameters;
5407         int err;
5408 
5409         IPW_DEBUG_HC("WEP_KEY_INFO: index = %d, len = %d/%d\n",
5410                      idx, keylen, len);
5411 
5412         /* NOTE: We don't check cached values in case the firmware was reset
5413          * or some other problem is occurring.  If the user is setting the key,
5414          * then we push the change */
5415 
5416         wep_key->idx = idx;
5417         wep_key->len = keylen;
5418 
5419         if (keylen) {
5420                 memcpy(wep_key->key, key, len);
5421                 memset(wep_key->key + len, 0, keylen - len);
5422         }
5423 
5424         /* Will be optimized out on debug not being configured in */
5425         if (keylen == 0)
5426                 IPW_DEBUG_WEP("%s: Clearing key %d\n",
5427                               priv->net_dev->name, wep_key->idx);
5428         else if (keylen == 5)
5429                 IPW_DEBUG_WEP("%s: idx: %d, len: %d key: " WEP_FMT_64 "\n",
5430                               priv->net_dev->name, wep_key->idx, wep_key->len,
5431                               WEP_STR_64(wep_key->key));
5432         else
5433                 IPW_DEBUG_WEP("%s: idx: %d, len: %d key: " WEP_FMT_128
5434                               "\n",
5435                               priv->net_dev->name, wep_key->idx, wep_key->len,
5436                               WEP_STR_128(wep_key->key));
5437 
5438         if (!batch_mode) {
5439                 err = ipw2100_disable_adapter(priv);
5440                 /* FIXME: IPG: shouldn't this prink be in _disable_adapter()? */
5441                 if (err) {
5442                         printk(KERN_ERR DRV_NAME
5443                                ": %s: Could not disable adapter %d\n",
5444                                priv->net_dev->name, err);
5445                         return err;
5446                 }
5447         }
5448 
5449         /* send cmd to firmware */
5450         err = ipw2100_hw_send_command(priv, &cmd);
5451 
5452         if (!batch_mode) {
5453                 int err2 = ipw2100_enable_adapter(priv);
5454                 if (err == 0)
5455                         err = err2;
5456         }
5457         return err;
5458 }
5459 
5460 static int ipw2100_set_key_index(struct ipw2100_priv *priv,
5461                                  int idx, int batch_mode)
5462 {
5463         struct host_command cmd = {
5464                 .host_command = WEP_KEY_INDEX,
5465                 .host_command_sequence = 0,
5466                 .host_command_length = 4,
5467                 .host_command_parameters = {idx},
5468         };
5469         int err;
5470 
5471         IPW_DEBUG_HC("WEP_KEY_INDEX: index = %d\n", idx);
5472 
5473         if (idx < 0 || idx > 3)
5474                 return -EINVAL;
5475 
5476         if (!batch_mode) {
5477                 err = ipw2100_disable_adapter(priv);
5478                 if (err) {
5479                         printk(KERN_ERR DRV_NAME
5480                                ": %s: Could not disable adapter %d\n",
5481                                priv->net_dev->name, err);
5482                         return err;
5483                 }
5484         }
5485 
5486         /* send cmd to firmware */
5487         err = ipw2100_hw_send_command(priv, &cmd);
5488 
5489         if (!batch_mode)
5490                 ipw2100_enable_adapter(priv);
5491 
5492         return err;
5493 }
5494 
5495 static int ipw2100_configure_security(struct ipw2100_priv *priv, int batch_mode)
5496 {
5497         int i, err, auth_mode, sec_level, use_group;
5498 
5499         if (!(priv->status & STATUS_RUNNING))
5500                 return 0;
5501 
5502         if (!batch_mode) {
5503                 err = ipw2100_disable_adapter(priv);
5504                 if (err)
5505                         return err;
5506         }
5507 
5508         if (!priv->ieee->sec.enabled) {
5509                 err =
5510                     ipw2100_set_security_information(priv, IPW_AUTH_OPEN,
5511                                                      SEC_LEVEL_0, 0, 1);
5512         } else {
5513                 auth_mode = IPW_AUTH_OPEN;
5514                 if (priv->ieee->sec.flags & SEC_AUTH_MODE) {
5515                         if (priv->ieee->sec.auth_mode == WLAN_AUTH_SHARED_KEY)
5516                                 auth_mode = IPW_AUTH_SHARED;
5517                         else if (priv->ieee->sec.auth_mode == WLAN_AUTH_LEAP)
5518                                 auth_mode = IPW_AUTH_LEAP_CISCO_ID;
5519                 }
5520 
5521                 sec_level = SEC_LEVEL_0;
5522                 if (priv->ieee->sec.flags & SEC_LEVEL)
5523                         sec_level = priv->ieee->sec.level;
5524 
5525                 use_group = 0;
5526                 if (priv->ieee->sec.flags & SEC_UNICAST_GROUP)
5527                         use_group = priv->ieee->sec.unicast_uses_group;
5528 
5529                 err =
5530                     ipw2100_set_security_information(priv, auth_mode, sec_level,
5531                                                      use_group, 1);
5532         }
5533 
5534         if (err)
5535                 goto exit;
5536 
5537         if (priv->ieee->sec.enabled) {
5538                 for (i = 0; i < 4; i++) {
5539                         if (!(priv->ieee->sec.flags & (1 << i))) {
5540                                 memset(priv->ieee->sec.keys[i], 0, WEP_KEY_LEN);
5541                                 priv->ieee->sec.key_sizes[i] = 0;
5542                         } else {
5543                                 err = ipw2100_set_key(priv, i,
5544                                                       priv->ieee->sec.keys[i],
5545                                                       priv->ieee->sec.
5546                                                       key_sizes[i], 1);
5547                                 if (err)
5548                                         goto exit;
5549                         }
5550                 }
5551 
5552                 ipw2100_set_key_index(priv, priv->ieee->crypt_info.tx_keyidx, 1);
5553         }
5554 
5555         /* Always enable privacy so the Host can filter WEP packets if
5556          * encrypted data is sent up */
5557         err =
5558             ipw2100_set_wep_flags(priv,
5559                                   priv->ieee->sec.
5560                                   enabled ? IPW_PRIVACY_CAPABLE : 0, 1);
5561         if (err)
5562                 goto exit;
5563 
5564         priv->status &= ~STATUS_SECURITY_UPDATED;
5565 
5566       exit:
5567         if (!batch_mode)
5568                 ipw2100_enable_adapter(priv);
5569 
5570         return err;
5571 }
5572 
5573 static void ipw2100_security_work(struct work_struct *work)
5574 {
5575         struct ipw2100_priv *priv =
5576                 container_of(work, struct ipw2100_priv, security_work.work);
5577 
5578         /* If we happen to have reconnected before we get a chance to
5579          * process this, then update the security settings--which causes
5580          * a disassociation to occur */
5581         if (!(priv->status & STATUS_ASSOCIATED) &&
5582             priv->status & STATUS_SECURITY_UPDATED)
5583                 ipw2100_configure_security(priv, 0);
5584 }
5585 
5586 static void shim__set_security(struct net_device *dev,
5587                                struct libipw_security *sec)
5588 {
5589         struct ipw2100_priv *priv = libipw_priv(dev);
5590         int i, force_update = 0;
5591 
5592         mutex_lock(&priv->action_mutex);
5593         if (!(priv->status & STATUS_INITIALIZED))
5594                 goto done;
5595 
5596         for (i = 0; i < 4; i++) {
5597                 if (sec->flags & (1 << i)) {
5598                         priv->ieee->sec.key_sizes[i] = sec->key_sizes[i];
5599                         if (sec->key_sizes[i] == 0)
5600                                 priv->ieee->sec.flags &= ~(1 << i);
5601                         else
5602                                 memcpy(priv->ieee->sec.keys[i], sec->keys[i],
5603                                        sec->key_sizes[i]);
5604                         if (sec->level == SEC_LEVEL_1) {
5605                                 priv->ieee->sec.flags |= (1 << i);
5606                                 priv->status |= STATUS_SECURITY_UPDATED;
5607                         } else
5608                                 priv->ieee->sec.flags &= ~(1 << i);
5609                 }
5610         }
5611 
5612         if ((sec->flags & SEC_ACTIVE_KEY) &&
5613             priv->ieee->sec.active_key != sec->active_key) {
5614                 if (sec->active_key <= 3) {
5615                         priv->ieee->sec.active_key = sec->active_key;
5616                         priv->ieee->sec.flags |= SEC_ACTIVE_KEY;
5617                 } else
5618                         priv->ieee->sec.flags &= ~SEC_ACTIVE_KEY;
5619 
5620                 priv->status |= STATUS_SECURITY_UPDATED;
5621         }
5622 
5623         if ((sec->flags & SEC_AUTH_MODE) &&
5624             (priv->ieee->sec.auth_mode != sec->auth_mode)) {
5625                 priv->ieee->sec.auth_mode = sec->auth_mode;
5626                 priv->ieee->sec.flags |= SEC_AUTH_MODE;
5627                 priv->status |= STATUS_SECURITY_UPDATED;
5628         }
5629 
5630         if (sec->flags & SEC_ENABLED && priv->ieee->sec.enabled != sec->enabled) {
5631                 priv->ieee->sec.flags |= SEC_ENABLED;
5632                 priv->ieee->sec.enabled = sec->enabled;
5633                 priv->status |= STATUS_SECURITY_UPDATED;
5634                 force_update = 1;
5635         }
5636 
5637         if (sec->flags & SEC_ENCRYPT)
5638                 priv->ieee->sec.encrypt = sec->encrypt;
5639 
5640         if (sec->flags & SEC_LEVEL && priv->ieee->sec.level != sec->level) {
5641                 priv->ieee->sec.level = sec->level;
5642                 priv->ieee->sec.flags |= SEC_LEVEL;
5643                 priv->status |= STATUS_SECURITY_UPDATED;
5644         }
5645 
5646         IPW_DEBUG_WEP("Security flags: %c %c%c%c%c %c%c%c%c\n",
5647                       priv->ieee->sec.flags & (1 << 8) ? '1' : '',
5648                       priv->ieee->sec.flags & (1 << 7) ? '1' : '',
5649                       priv->ieee->sec.flags & (1 << 6) ? '1' : '',
5650                       priv->ieee->sec.flags & (1 << 5) ? '1' : '',
5651                       priv->ieee->sec.flags & (1 << 4) ? '1' : '',
5652                       priv->ieee->sec.flags & (1 << 3) ? '1' : '',
5653                       priv->ieee->sec.flags & (1 << 2) ? '1' : '',
5654                       priv->ieee->sec.flags & (1 << 1) ? '1' : '',
5655                       priv->ieee->sec.flags & (1 << 0) ? '1' : '');
5656 
5657 /* As a temporary work around to enable WPA until we figure out why
5658  * wpa_supplicant toggles the security capability of the driver, which
5659  * forces a disassocation with force_update...
5660  *
5661  *      if (force_update || !(priv->status & STATUS_ASSOCIATED))*/
5662         if (!(priv->status & (STATUS_ASSOCIATED | STATUS_ASSOCIATING)))
5663                 ipw2100_configure_security(priv, 0);
5664       done:
5665         mutex_unlock(&priv->action_mutex);
5666 }
5667 
5668 static int ipw2100_adapter_setup(struct ipw2100_priv *priv)
5669 {
5670         int err;
5671         int batch_mode = 1;
5672         u8 *bssid;
5673 
5674         IPW_DEBUG_INFO("enter\n");
5675 
5676         err = ipw2100_disable_adapter(priv);
5677         if (err)
5678                 return err;
5679 #ifdef CONFIG_IPW2100_MONITOR
5680         if (priv->ieee->iw_mode == IW_MODE_MONITOR) {
5681                 err = ipw2100_set_channel(priv, priv->channel, batch_mode);
5682                 if (err)
5683                         return err;
5684 
5685                 IPW_DEBUG_INFO("exit\n");
5686 
5687                 return 0;
5688         }
5689 #endif                          /* CONFIG_IPW2100_MONITOR */
5690 
5691         err = ipw2100_read_mac_address(priv);
5692         if (err)
5693                 return -EIO;
5694 
5695         err = ipw2100_set_mac_address(priv, batch_mode);
5696         if (err)
5697                 return err;
5698 
5699         err = ipw2100_set_port_type(priv, priv->ieee->iw_mode, batch_mode);
5700         if (err)
5701                 return err;
5702 
5703         if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
5704                 err = ipw2100_set_channel(priv, priv->channel, batch_mode);
5705                 if (err)
5706                         return err;
5707         }
5708 
5709         err = ipw2100_system_config(priv, batch_mode);
5710         if (err)
5711                 return err;
5712 
5713         err = ipw2100_set_tx_rates(priv, priv->tx_rates, batch_mode);
5714         if (err)
5715                 return err;
5716 
5717         /* Default to power mode OFF */
5718         err = ipw2100_set_power_mode(priv, IPW_POWER_MODE_CAM);
5719         if (err)
5720                 return err;
5721 
5722         err = ipw2100_set_rts_threshold(priv, priv->rts_threshold);
5723         if (err)
5724                 return err;
5725 
5726         if (priv->config & CFG_STATIC_BSSID)
5727                 bssid = priv->bssid;
5728         else
5729                 bssid = NULL;
5730         err = ipw2100_set_mandatory_bssid(priv, bssid, batch_mode);
5731         if (err)
5732                 return err;
5733 
5734         if (priv->config & CFG_STATIC_ESSID)
5735                 err = ipw2100_set_essid(priv, priv->essid, priv->essid_len,
5736                                         batch_mode);
5737         else
5738                 err = ipw2100_set_essid(priv, NULL, 0, batch_mode);
5739         if (err)
5740                 return err;
5741 
5742         err = ipw2100_configure_security(priv, batch_mode);
5743         if (err)
5744                 return err;
5745 
5746         if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
5747                 err =
5748                     ipw2100_set_ibss_beacon_interval(priv,
5749                                                      priv->beacon_interval,
5750                                                      batch_mode);
5751                 if (err)
5752                         return err;
5753 
5754                 err = ipw2100_set_tx_power(priv, priv->tx_power);
5755                 if (err)
5756                         return err;
5757         }
5758 
5759         /*
5760            err = ipw2100_set_fragmentation_threshold(
5761            priv, priv->frag_threshold, batch_mode);
5762            if (err)
5763            return err;
5764          */
5765 
5766         IPW_DEBUG_INFO("exit\n");
5767 
5768         return 0;
5769 }
5770 
5771 /*************************************************************************
5772  *
5773  * EXTERNALLY CALLED METHODS
5774  *
5775  *************************************************************************/
5776 
5777 /* This method is called by the network layer -- not to be confused with
5778  * ipw2100_set_mac_address() declared above called by this driver (and this
5779  * method as well) to talk to the firmware */
5780 static int ipw2100_set_address(struct net_device *dev, void *p)
5781 {
5782         struct ipw2100_priv *priv = libipw_priv(dev);
5783         struct sockaddr *addr = p;
5784         int err = 0;
5785 
5786         if (!is_valid_ether_addr(addr->sa_data))
5787                 return -EADDRNOTAVAIL;
5788 
5789         mutex_lock(&priv->action_mutex);
5790 
5791         priv->config |= CFG_CUSTOM_MAC;
5792         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
5793 
5794         err = ipw2100_set_mac_address(priv, 0);
5795         if (err)
5796                 goto done;
5797 
5798         priv->reset_backoff = 0;
5799         mutex_unlock(&priv->action_mutex);
5800         ipw2100_reset_adapter(&priv->reset_work.work);
5801         return 0;
5802 
5803       done:
5804         mutex_unlock(&priv->action_mutex);
5805         return err;
5806 }
5807 
5808 static int ipw2100_open(struct net_device *dev)
5809 {
5810         struct ipw2100_priv *priv = libipw_priv(dev);
5811         unsigned long flags;
5812         IPW_DEBUG_INFO("dev->open\n");
5813 
5814         spin_lock_irqsave(&priv->low_lock, flags);
5815         if (priv->status & STATUS_ASSOCIATED) {
5816                 netif_carrier_on(dev);
5817                 netif_start_queue(dev);
5818         }
5819         spin_unlock_irqrestore(&priv->low_lock, flags);
5820 
5821         return 0;
5822 }
5823 
5824 static int ipw2100_close(struct net_device *dev)
5825 {
5826         struct ipw2100_priv *priv = libipw_priv(dev);
5827         unsigned long flags;
5828         struct list_head *element;
5829         struct ipw2100_tx_packet *packet;
5830 
5831         IPW_DEBUG_INFO("enter\n");
5832 
5833         spin_lock_irqsave(&priv->low_lock, flags);
5834 
5835         if (priv->status & STATUS_ASSOCIATED)
5836                 netif_carrier_off(dev);
5837         netif_stop_queue(dev);
5838 
5839         /* Flush the TX queue ... */
5840         while (!list_empty(&priv->tx_pend_list)) {
5841                 element = priv->tx_pend_list.next;
5842                 packet = list_entry(element, struct ipw2100_tx_packet, list);
5843 
5844                 list_del(element);
5845                 DEC_STAT(&priv->tx_pend_stat);
5846 
5847                 libipw_txb_free(packet->info.d_struct.txb);
5848                 packet->info.d_struct.txb = NULL;
5849 
5850                 list_add_tail(element, &priv->tx_free_list);
5851                 INC_STAT(&priv->tx_free_stat);
5852         }
5853         spin_unlock_irqrestore(&priv->low_lock, flags);
5854 
5855         IPW_DEBUG_INFO("exit\n");
5856 
5857         return 0;
5858 }
5859 
5860 /*
5861  * TODO:  Fix this function... its just wrong
5862  */
5863 static void ipw2100_tx_timeout(struct net_device *dev)
5864 {
5865         struct ipw2100_priv *priv = libipw_priv(dev);
5866 
5867         dev->stats.tx_errors++;
5868 
5869 #ifdef CONFIG_IPW2100_MONITOR
5870         if (priv->ieee->iw_mode == IW_MODE_MONITOR)
5871                 return;
5872 #endif
5873 
5874         IPW_DEBUG_INFO("%s: TX timed out.  Scheduling firmware restart.\n",
5875                        dev->name);
5876         schedule_reset(priv);
5877 }
5878 
5879 static int ipw2100_wpa_enable(struct ipw2100_priv *priv, int value)
5880 {
5881         /* This is called when wpa_supplicant loads and closes the driver
5882          * interface. */
5883         priv->ieee->wpa_enabled = value;
5884         return 0;
5885 }
5886 
5887 static int ipw2100_wpa_set_auth_algs(struct ipw2100_priv *priv, int value)
5888 {
5889 
5890         struct libipw_device *ieee = priv->ieee;
5891         struct libipw_security sec = {
5892                 .flags = SEC_AUTH_MODE,
5893         };
5894         int ret = 0;
5895 
5896         if (value & IW_AUTH_ALG_SHARED_KEY) {
5897                 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
5898                 ieee->open_wep = 0;
5899         } else if (value & IW_AUTH_ALG_OPEN_SYSTEM) {
5900                 sec.auth_mode = WLAN_AUTH_OPEN;
5901                 ieee->open_wep = 1;
5902         } else if (value & IW_AUTH_ALG_LEAP) {
5903                 sec.auth_mode = WLAN_AUTH_LEAP;
5904                 ieee->open_wep = 1;
5905         } else
5906                 return -EINVAL;
5907 
5908         if (ieee->set_security)
5909                 ieee->set_security(ieee->dev, &sec);
5910         else
5911                 ret = -EOPNOTSUPP;
5912 
5913         return ret;
5914 }
5915 
5916 static void ipw2100_wpa_assoc_frame(struct ipw2100_priv *priv,
5917                                     char *wpa_ie, int wpa_ie_len)
5918 {
5919 
5920         struct ipw2100_wpa_assoc_frame frame;
5921 
5922         frame.fixed_ie_mask = 0;
5923 
5924         /* copy WPA IE */
5925         memcpy(frame.var_ie, wpa_ie, wpa_ie_len);
5926         frame.var_ie_len = wpa_ie_len;
5927 
5928         /* make sure WPA is enabled */
5929         ipw2100_wpa_enable(priv, 1);
5930         ipw2100_set_wpa_ie(priv, &frame, 0);
5931 }
5932 
5933 static void ipw_ethtool_get_drvinfo(struct net_device *dev,
5934                                     struct ethtool_drvinfo *info)
5935 {
5936         struct ipw2100_priv *priv = libipw_priv(dev);
5937         char fw_ver[64], ucode_ver[64];
5938 
5939         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
5940         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
5941 
5942         ipw2100_get_fwversion(priv, fw_ver, sizeof(fw_ver));
5943         ipw2100_get_ucodeversion(priv, ucode_ver, sizeof(ucode_ver));
5944 
5945         snprintf(info->fw_version, sizeof(info->fw_version), "%s:%d:%s",
5946                  fw_ver, priv->eeprom_version, ucode_ver);
5947 
5948         strlcpy(info->bus_info, pci_name(priv->pci_dev),
5949                 sizeof(info->bus_info));
5950 }
5951 
5952 static u32 ipw2100_ethtool_get_link(struct net_device *dev)
5953 {
5954         struct ipw2100_priv *priv = libipw_priv(dev);
5955         return (priv->status & STATUS_ASSOCIATED) ? 1 : 0;
5956 }
5957 
5958 static const struct ethtool_ops ipw2100_ethtool_ops = {
5959         .get_link = ipw2100_ethtool_get_link,
5960         .get_drvinfo = ipw_ethtool_get_drvinfo,
5961 };
5962 
5963 static void ipw2100_hang_check(struct work_struct *work)
5964 {
5965         struct ipw2100_priv *priv =
5966                 container_of(work, struct ipw2100_priv, hang_check.work);
5967         unsigned long flags;
5968         u32 rtc = 0xa5a5a5a5;
5969         u32 len = sizeof(rtc);
5970         int restart = 0;
5971 
5972         spin_lock_irqsave(&priv->low_lock, flags);
5973 
5974         if (priv->fatal_error != 0) {
5975                 /* If fatal_error is set then we need to restart */
5976                 IPW_DEBUG_INFO("%s: Hardware fatal error detected.\n",
5977                                priv->net_dev->name);
5978 
5979                 restart = 1;
5980         } else if (ipw2100_get_ordinal(priv, IPW_ORD_RTC_TIME, &rtc, &len) ||
5981                    (rtc == priv->last_rtc)) {
5982                 /* Check if firmware is hung */
5983                 IPW_DEBUG_INFO("%s: Firmware RTC stalled.\n",
5984                                priv->net_dev->name);
5985 
5986                 restart = 1;
5987         }
5988 
5989         if (restart) {
5990                 /* Kill timer */
5991                 priv->stop_hang_check = 1;
5992                 priv->hangs++;
5993 
5994                 /* Restart the NIC */
5995                 schedule_reset(priv);
5996         }
5997 
5998         priv->last_rtc = rtc;
5999 
6000         if (!priv->stop_hang_check)
6001                 schedule_delayed_work(&priv->hang_check, HZ / 2);
6002 
6003         spin_unlock_irqrestore(&priv->low_lock, flags);
6004 }
6005 
6006 static void ipw2100_rf_kill(struct work_struct *work)
6007 {
6008         struct ipw2100_priv *priv =
6009                 container_of(work, struct ipw2100_priv, rf_kill.work);
6010         unsigned long flags;
6011 
6012         spin_lock_irqsave(&priv->low_lock, flags);
6013 
6014         if (rf_kill_active(priv)) {
6015                 IPW_DEBUG_RF_KILL("RF Kill active, rescheduling GPIO check\n");
6016                 if (!priv->stop_rf_kill)
6017                         schedule_delayed_work(&priv->rf_kill,
6018                                               round_jiffies_relative(HZ));
6019                 goto exit_unlock;
6020         }
6021 
6022         /* RF Kill is now disabled, so bring the device back up */
6023 
6024         if (!(priv->status & STATUS_RF_KILL_MASK)) {
6025                 IPW_DEBUG_RF_KILL("HW RF Kill no longer active, restarting "
6026                                   "device\n");
6027                 schedule_reset(priv);
6028         } else
6029                 IPW_DEBUG_RF_KILL("HW RF Kill deactivated.  SW RF Kill still "
6030                                   "enabled\n");
6031 
6032       exit_unlock:
6033         spin_unlock_irqrestore(&priv->low_lock, flags);
6034 }
6035 
6036 static void ipw2100_irq_tasklet(struct ipw2100_priv *priv);
6037 
6038 static const struct net_device_ops ipw2100_netdev_ops = {
6039         .ndo_open               = ipw2100_open,
6040         .ndo_stop               = ipw2100_close,
6041         .ndo_start_xmit         = libipw_xmit,
6042         .ndo_change_mtu         = libipw_change_mtu,
6043         .ndo_tx_timeout         = ipw2100_tx_timeout,
6044         .ndo_set_mac_address    = ipw2100_set_address,
6045         .ndo_validate_addr      = eth_validate_addr,
6046 };
6047 
6048 /* Look into using netdev destructor to shutdown libipw? */
6049 
6050 static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev,
6051                                                void __iomem * ioaddr)
6052 {
6053         struct ipw2100_priv *priv;
6054         struct net_device *dev;
6055 
6056         dev = alloc_libipw(sizeof(struct ipw2100_priv), 0);
6057         if (!dev)
6058                 return NULL;
6059         priv = libipw_priv(dev);
6060         priv->ieee = netdev_priv(dev);
6061         priv->pci_dev = pci_dev;
6062         priv->net_dev = dev;
6063         priv->ioaddr = ioaddr;
6064 
6065         priv->ieee->hard_start_xmit = ipw2100_tx;
6066         priv->ieee->set_security = shim__set_security;
6067 
6068         priv->ieee->perfect_rssi = -20;
6069         priv->ieee->worst_rssi = -85;
6070 
6071         dev->netdev_ops = &ipw2100_netdev_ops;
6072         dev->ethtool_ops = &ipw2100_ethtool_ops;
6073         dev->wireless_handlers = &ipw2100_wx_handler_def;
6074         priv->wireless_data.libipw = priv->ieee;
6075         dev->wireless_data = &priv->wireless_data;
6076         dev->watchdog_timeo = 3 * HZ;
6077         dev->irq = 0;
6078 
6079         /* NOTE: We don't use the wireless_handlers hook
6080          * in dev as the system will start throwing WX requests
6081          * to us before we're actually initialized and it just
6082          * ends up causing problems.  So, we just handle
6083          * the WX extensions through the ipw2100_ioctl interface */
6084 
6085         /* memset() puts everything to 0, so we only have explicitly set
6086          * those values that need to be something else */
6087 
6088         /* If power management is turned on, default to AUTO mode */
6089         priv->power_mode = IPW_POWER_AUTO;
6090 
6091 #ifdef CONFIG_IPW2100_MONITOR
6092         priv->config |= CFG_CRC_CHECK;
6093 #endif
6094         priv->ieee->wpa_enabled = 0;
6095         priv->ieee->drop_unencrypted = 0;
6096         priv->ieee->privacy_invoked = 0;
6097         priv->ieee->ieee802_1x = 1;
6098 
6099         /* Set module parameters */
6100         switch (network_mode) {
6101         case 1:
6102                 priv->ieee->iw_mode = IW_MODE_ADHOC;
6103                 break;
6104 #ifdef CONFIG_IPW2100_MONITOR
6105         case 2:
6106                 priv->ieee->iw_mode = IW_MODE_MONITOR;
6107                 break;
6108 #endif
6109         default:
6110         case 0:
6111                 priv->ieee->iw_mode = IW_MODE_INFRA;
6112                 break;
6113         }
6114 
6115         if (disable == 1)
6116                 priv->status |= STATUS_RF_KILL_SW;
6117 
6118         if (channel != 0 &&
6119             ((channel >= REG_MIN_CHANNEL) && (channel <= REG_MAX_CHANNEL))) {
6120                 priv->config |= CFG_STATIC_CHANNEL;
6121                 priv->channel = channel;
6122         }
6123 
6124         if (associate)
6125                 priv->config |= CFG_ASSOCIATE;
6126 
6127         priv->beacon_interval = DEFAULT_BEACON_INTERVAL;
6128         priv->short_retry_limit = DEFAULT_SHORT_RETRY_LIMIT;
6129         priv->long_retry_limit = DEFAULT_LONG_RETRY_LIMIT;
6130         priv->rts_threshold = DEFAULT_RTS_THRESHOLD | RTS_DISABLED;
6131         priv->frag_threshold = DEFAULT_FTS | FRAG_DISABLED;
6132         priv->tx_power = IPW_TX_POWER_DEFAULT;
6133         priv->tx_rates = DEFAULT_TX_RATES;
6134 
6135         strcpy(priv->nick, "ipw2100");
6136 
6137         spin_lock_init(&priv->low_lock);
6138         mutex_init(&priv->action_mutex);
6139         mutex_init(&priv->adapter_mutex);
6140 
6141         init_waitqueue_head(&priv->wait_command_queue);
6142 
6143         netif_carrier_off(dev);
6144 
6145         INIT_LIST_HEAD(&priv->msg_free_list);
6146         INIT_LIST_HEAD(&priv->msg_pend_list);
6147         INIT_STAT(&priv->msg_free_stat);
6148         INIT_STAT(&priv->msg_pend_stat);
6149 
6150         INIT_LIST_HEAD(&priv->tx_free_list);
6151         INIT_LIST_HEAD(&priv->tx_pend_list);
6152         INIT_STAT(&priv->tx_free_stat);
6153         INIT_STAT(&priv->tx_pend_stat);
6154 
6155         INIT_LIST_HEAD(&priv->fw_pend_list);
6156         INIT_STAT(&priv->fw_pend_stat);
6157 
6158         INIT_DELAYED_WORK(&priv->reset_work, ipw2100_reset_adapter);
6159         INIT_DELAYED_WORK(&priv->security_work, ipw2100_security_work);
6160         INIT_DELAYED_WORK(&priv->wx_event_work, ipw2100_wx_event_work);
6161         INIT_DELAYED_WORK(&priv->hang_check, ipw2100_hang_check);
6162         INIT_DELAYED_WORK(&priv->rf_kill, ipw2100_rf_kill);
6163         INIT_DELAYED_WORK(&priv->scan_event, ipw2100_scan_event);
6164 
6165         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6166                      ipw2100_irq_tasklet, (unsigned long)priv);
6167 
6168         /* NOTE:  We do not start the deferred work for status checks yet */
6169         priv->stop_rf_kill = 1;
6170         priv->stop_hang_check = 1;
6171 
6172         return dev;
6173 }
6174 
6175 static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
6176                                 const struct pci_device_id *ent)
6177 {
6178         void __iomem *ioaddr;
6179         struct net_device *dev = NULL;
6180         struct ipw2100_priv *priv = NULL;
6181         int err = 0;
6182         int registered = 0;
6183         u32 val;
6184 
6185         IPW_DEBUG_INFO("enter\n");
6186 
6187         if (!(pci_resource_flags(pci_dev, 0) & IORESOURCE_MEM)) {
6188                 IPW_DEBUG_INFO("weird - resource type is not memory\n");
6189                 err = -ENODEV;
6190                 goto out;
6191         }
6192 
6193         ioaddr = pci_iomap(pci_dev, 0, 0);
6194         if (!ioaddr) {
6195                 printk(KERN_WARNING DRV_NAME
6196                        "Error calling ioremap_nocache.\n");
6197                 err = -EIO;
6198                 goto fail;
6199         }
6200 
6201         /* allocate and initialize our net_device */
6202         dev = ipw2100_alloc_device(pci_dev, ioaddr);
6203         if (!dev) {
6204                 printk(KERN_WARNING DRV_NAME
6205                        "Error calling ipw2100_alloc_device.\n");
6206                 err = -ENOMEM;
6207                 goto fail;
6208         }
6209 
6210         /* set up PCI mappings for device */
6211         err = pci_enable_device(pci_dev);
6212         if (err) {
6213                 printk(KERN_WARNING DRV_NAME
6214                        "Error calling pci_enable_device.\n");
6215                 return err;
6216         }
6217 
6218         priv = libipw_priv(dev);
6219 
6220         pci_set_master(pci_dev);
6221         pci_set_drvdata(pci_dev, priv);
6222 
6223         err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
6224         if (err) {
6225                 printk(KERN_WARNING DRV_NAME
6226                        "Error calling pci_set_dma_mask.\n");
6227                 pci_disable_device(pci_dev);
6228                 return err;
6229         }
6230 
6231         err = pci_request_regions(pci_dev, DRV_NAME);
6232         if (err) {
6233                 printk(KERN_WARNING DRV_NAME
6234                        "Error calling pci_request_regions.\n");
6235                 pci_disable_device(pci_dev);
6236                 return err;
6237         }
6238 
6239         /* We disable the RETRY_TIMEOUT register (0x41) to keep
6240          * PCI Tx retries from interfering with C3 CPU state */
6241         pci_read_config_dword(pci_dev, 0x40, &val);
6242         if ((val & 0x0000ff00) != 0)
6243                 pci_write_config_dword(pci_dev, 0x40, val & 0xffff00ff);
6244 
6245         if (!ipw2100_hw_is_adapter_in_system(dev)) {
6246                 printk(KERN_WARNING DRV_NAME
6247                        "Device not found via register read.\n");
6248                 err = -ENODEV;
6249                 goto fail;
6250         }
6251 
6252         SET_NETDEV_DEV(dev, &pci_dev->dev);
6253 
6254         /* Force interrupts to be shut off on the device */
6255         priv->status |= STATUS_INT_ENABLED;
6256         ipw2100_disable_interrupts(priv);
6257 
6258         /* Allocate and initialize the Tx/Rx queues and lists */
6259         if (ipw2100_queues_allocate(priv)) {
6260                 printk(KERN_WARNING DRV_NAME
6261                        "Error calling ipw2100_queues_allocate.\n");
6262                 err = -ENOMEM;
6263                 goto fail;
6264         }
6265         ipw2100_queues_initialize(priv);
6266 
6267         err = request_irq(pci_dev->irq,
6268                           ipw2100_interrupt, IRQF_SHARED, dev->name, priv);
6269         if (err) {
6270                 printk(KERN_WARNING DRV_NAME
6271                        "Error calling request_irq: %d.\n", pci_dev->irq);
6272                 goto fail;
6273         }
6274         dev->irq = pci_dev->irq;
6275 
6276         IPW_DEBUG_INFO("Attempting to register device...\n");
6277 
6278         printk(KERN_INFO DRV_NAME
6279                ": Detected Intel PRO/Wireless 2100 Network Connection\n");
6280 
6281         err = ipw2100_up(priv, 1);
6282         if (err)
6283                 goto fail;
6284 
6285         err = ipw2100_wdev_init(dev);
6286         if (err)
6287                 goto fail;
6288         registered = 1;
6289 
6290         /* Bring up the interface.  Pre 0.46, after we registered the
6291          * network device we would call ipw2100_up.  This introduced a race
6292          * condition with newer hotplug configurations (network was coming
6293          * up and making calls before the device was initialized).
6294          */
6295         err = register_netdev(dev);
6296         if (err) {
6297                 printk(KERN_WARNING DRV_NAME
6298                        "Error calling register_netdev.\n");
6299                 goto fail;
6300         }
6301         registered = 2;
6302 
6303         mutex_lock(&priv->action_mutex);
6304 
6305         IPW_DEBUG_INFO("%s: Bound to %s\n", dev->name, pci_name(pci_dev));
6306 
6307         /* perform this after register_netdev so that dev->name is set */
6308         err = sysfs_create_group(&pci_dev->dev.kobj, &ipw2100_attribute_group);
6309         if (err)
6310                 goto fail_unlock;
6311 
6312         /* If the RF Kill switch is disabled, go ahead and complete the
6313          * startup sequence */
6314         if (!(priv->status & STATUS_RF_KILL_MASK)) {
6315                 /* Enable the adapter - sends HOST_COMPLETE */
6316                 if (ipw2100_enable_adapter(priv)) {
6317                         printk(KERN_WARNING DRV_NAME
6318                                ": %s: failed in call to enable adapter.\n",
6319                                priv->net_dev->name);
6320                         ipw2100_hw_stop_adapter(priv);
6321                         err = -EIO;
6322                         goto fail_unlock;
6323                 }
6324 
6325                 /* Start a scan . . . */
6326                 ipw2100_set_scan_options(priv);
6327                 ipw2100_start_scan(priv);
6328         }
6329 
6330         IPW_DEBUG_INFO("exit\n");
6331 
6332         priv->status |= STATUS_INITIALIZED;
6333 
6334         mutex_unlock(&priv->action_mutex);
6335 out:
6336         return err;
6337 
6338       fail_unlock:
6339         mutex_unlock(&priv->action_mutex);
6340       fail:
6341         if (dev) {
6342                 if (registered >= 2)
6343                         unregister_netdev(dev);
6344 
6345                 if (registered) {
6346                         wiphy_unregister(priv->ieee->wdev.wiphy);
6347                         kfree(priv->ieee->bg_band.channels);
6348                 }
6349 
6350                 ipw2100_hw_stop_adapter(priv);
6351 
6352                 ipw2100_disable_interrupts(priv);
6353 
6354                 if (dev->irq)
6355                         free_irq(dev->irq, priv);
6356 
6357                 ipw2100_kill_works(priv);
6358 
6359                 /* These are safe to call even if they weren't allocated */
6360                 ipw2100_queues_free(priv);
6361                 sysfs_remove_group(&pci_dev->dev.kobj,
6362                                    &ipw2100_attribute_group);
6363 
6364                 free_libipw(dev, 0);
6365         }
6366 
6367         pci_iounmap(pci_dev, ioaddr);
6368 
6369         pci_release_regions(pci_dev);
6370         pci_disable_device(pci_dev);
6371         goto out;
6372 }
6373 
6374 static void ipw2100_pci_remove_one(struct pci_dev *pci_dev)
6375 {
6376         struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
6377         struct net_device *dev = priv->net_dev;
6378 
6379         mutex_lock(&priv->action_mutex);
6380 
6381         priv->status &= ~STATUS_INITIALIZED;
6382 
6383         sysfs_remove_group(&pci_dev->dev.kobj, &ipw2100_attribute_group);
6384 
6385 #ifdef CONFIG_PM
6386         if (ipw2100_firmware.version)
6387                 ipw2100_release_firmware(priv, &ipw2100_firmware);
6388 #endif
6389         /* Take down the hardware */
6390         ipw2100_down(priv);
6391 
6392         /* Release the mutex so that the network subsystem can
6393          * complete any needed calls into the driver... */
6394         mutex_unlock(&priv->action_mutex);
6395 
6396         /* Unregister the device first - this results in close()
6397          * being called if the device is open.  If we free storage
6398          * first, then close() will crash.
6399          * FIXME: remove the comment above. */
6400         unregister_netdev(dev);
6401 
6402         ipw2100_kill_works(priv);
6403 
6404         ipw2100_queues_free(priv);
6405 
6406         /* Free potential debugging firmware snapshot */
6407         ipw2100_snapshot_free(priv);
6408 
6409         free_irq(dev->irq, priv);
6410 
6411         pci_iounmap(pci_dev, priv->ioaddr);
6412 
6413         /* wiphy_unregister needs to be here, before free_libipw */
6414         wiphy_unregister(priv->ieee->wdev.wiphy);
6415         kfree(priv->ieee->bg_band.channels);
6416         free_libipw(dev, 0);
6417 
6418         pci_release_regions(pci_dev);
6419         pci_disable_device(pci_dev);
6420 
6421         IPW_DEBUG_INFO("exit\n");
6422 }
6423 
6424 #ifdef CONFIG_PM
6425 static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state)
6426 {
6427         struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
6428         struct net_device *dev = priv->net_dev;
6429 
6430         IPW_DEBUG_INFO("%s: Going into suspend...\n", dev->name);
6431 
6432         mutex_lock(&priv->action_mutex);
6433         if (priv->status & STATUS_INITIALIZED) {
6434                 /* Take down the device; powers it off, etc. */
6435                 ipw2100_down(priv);
6436         }
6437 
6438         /* Remove the PRESENT state of the device */
6439         netif_device_detach(dev);
6440 
6441         pci_save_state(pci_dev);
6442         pci_disable_device(pci_dev);
6443         pci_set_power_state(pci_dev, PCI_D3hot);
6444 
6445         priv->suspend_at = get_seconds();
6446 
6447         mutex_unlock(&priv->action_mutex);
6448 
6449         return 0;
6450 }
6451 
6452 static int ipw2100_resume(struct pci_dev *pci_dev)
6453 {
6454         struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
6455         struct net_device *dev = priv->net_dev;
6456         int err;
6457         u32 val;
6458 
6459         if (IPW2100_PM_DISABLED)
6460                 return 0;
6461 
6462         mutex_lock(&priv->action_mutex);
6463 
6464         IPW_DEBUG_INFO("%s: Coming out of suspend...\n", dev->name);
6465 
6466         pci_set_power_state(pci_dev, PCI_D0);
6467         err = pci_enable_device(pci_dev);
6468         if (err) {
6469                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
6470                        dev->name);
6471                 mutex_unlock(&priv->action_mutex);
6472                 return err;
6473         }
6474         pci_restore_state(pci_dev);
6475 
6476         /*
6477          * Suspend/Resume resets the PCI configuration space, so we have to
6478          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
6479          * from interfering with C3 CPU state. pci_restore_state won't help
6480          * here since it only restores the first 64 bytes pci config header.
6481          */
6482         pci_read_config_dword(pci_dev, 0x40, &val);
6483         if ((val & 0x0000ff00) != 0)
6484                 pci_write_config_dword(pci_dev, 0x40, val & 0xffff00ff);
6485 
6486         /* Set the device back into the PRESENT state; this will also wake
6487          * the queue of needed */
6488         netif_device_attach(dev);
6489 
6490         priv->suspend_time = get_seconds() - priv->suspend_at;
6491 
6492         /* Bring the device back up */
6493         if (!(priv->status & STATUS_RF_KILL_SW))
6494                 ipw2100_up(priv, 0);
6495 
6496         mutex_unlock(&priv->action_mutex);
6497 
6498         return 0;
6499 }
6500 #endif
6501 
6502 static void ipw2100_shutdown(struct pci_dev *pci_dev)
6503 {
6504         struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
6505 
6506         /* Take down the device; powers it off, etc. */
6507         ipw2100_down(priv);
6508 
6509         pci_disable_device(pci_dev);
6510 }
6511 
6512 #define IPW2100_DEV_ID(x) { PCI_VENDOR_ID_INTEL, 0x1043, 0x8086, x }
6513 
6514 static DEFINE_PCI_DEVICE_TABLE(ipw2100_pci_id_table) = {
6515         IPW2100_DEV_ID(0x2520), /* IN 2100A mPCI 3A */
6516         IPW2100_DEV_ID(0x2521), /* IN 2100A mPCI 3B */
6517         IPW2100_DEV_ID(0x2524), /* IN 2100A mPCI 3B */
6518         IPW2100_DEV_ID(0x2525), /* IN 2100A mPCI 3B */
6519         IPW2100_DEV_ID(0x2526), /* IN 2100A mPCI Gen A3 */
6520         IPW2100_DEV_ID(0x2522), /* IN 2100 mPCI 3B */
6521         IPW2100_DEV_ID(0x2523), /* IN 2100 mPCI 3A */
6522         IPW2100_DEV_ID(0x2527), /* IN 2100 mPCI 3B */
6523         IPW2100_DEV_ID(0x2528), /* IN 2100 mPCI 3B */
6524         IPW2100_DEV_ID(0x2529), /* IN 2100 mPCI 3B */
6525         IPW2100_DEV_ID(0x252B), /* IN 2100 mPCI 3A */
6526         IPW2100_DEV_ID(0x252C), /* IN 2100 mPCI 3A */
6527         IPW2100_DEV_ID(0x252D), /* IN 2100 mPCI 3A */
6528 
6529         IPW2100_DEV_ID(0x2550), /* IB 2100A mPCI 3B */
6530         IPW2100_DEV_ID(0x2551), /* IB 2100 mPCI 3B */
6531         IPW2100_DEV_ID(0x2553), /* IB 2100 mPCI 3B */
6532         IPW2100_DEV_ID(0x2554), /* IB 2100 mPCI 3B */
6533         IPW2100_DEV_ID(0x2555), /* IB 2100 mPCI 3B */
6534 
6535         IPW2100_DEV_ID(0x2560), /* DE 2100A mPCI 3A */
6536         IPW2100_DEV_ID(0x2562), /* DE 2100A mPCI 3A */
6537         IPW2100_DEV_ID(0x2563), /* DE 2100A mPCI 3A */
6538         IPW2100_DEV_ID(0x2561), /* DE 2100 mPCI 3A */
6539         IPW2100_DEV_ID(0x2565), /* DE 2100 mPCI 3A */
6540         IPW2100_DEV_ID(0x2566), /* DE 2100 mPCI 3A */
6541         IPW2100_DEV_ID(0x2567), /* DE 2100 mPCI 3A */
6542 
6543         IPW2100_DEV_ID(0x2570), /* GA 2100 mPCI 3B */
6544 
6545         IPW2100_DEV_ID(0x2580), /* TO 2100A mPCI 3B */
6546         IPW2100_DEV_ID(0x2582), /* TO 2100A mPCI 3B */
6547         IPW2100_DEV_ID(0x2583), /* TO 2100A mPCI 3B */
6548         IPW2100_DEV_ID(0x2581), /* TO 2100 mPCI 3B */
6549         IPW2100_DEV_ID(0x2585), /* TO 2100 mPCI 3B */
6550         IPW2100_DEV_ID(0x2586), /* TO 2100 mPCI 3B */
6551         IPW2100_DEV_ID(0x2587), /* TO 2100 mPCI 3B */
6552 
6553         IPW2100_DEV_ID(0x2590), /* SO 2100A mPCI 3B */
6554         IPW2100_DEV_ID(0x2592), /* SO 2100A mPCI 3B */
6555         IPW2100_DEV_ID(0x2591), /* SO 2100 mPCI 3B */
6556         IPW2100_DEV_ID(0x2593), /* SO 2100 mPCI 3B */
6557         IPW2100_DEV_ID(0x2596), /* SO 2100 mPCI 3B */
6558         IPW2100_DEV_ID(0x2598), /* SO 2100 mPCI 3B */
6559 
6560         IPW2100_DEV_ID(0x25A0), /* HP 2100 mPCI 3B */
6561         {0,},
6562 };
6563 
6564 MODULE_DEVICE_TABLE(pci, ipw2100_pci_id_table);
6565 
6566 static struct pci_driver ipw2100_pci_driver = {
6567         .name = DRV_NAME,
6568         .id_table = ipw2100_pci_id_table,
6569         .probe = ipw2100_pci_init_one,
6570         .remove = ipw2100_pci_remove_one,
6571 #ifdef CONFIG_PM
6572         .suspend = ipw2100_suspend,
6573         .resume = ipw2100_resume,
6574 #endif
6575         .shutdown = ipw2100_shutdown,
6576 };
6577 
6578 /**
6579  * Initialize the ipw2100 driver/module
6580  *
6581  * @returns 0 if ok, < 0 errno node con error.
6582  *
6583  * Note: we cannot init the /proc stuff until the PCI driver is there,
6584  * or we risk an unlikely race condition on someone accessing
6585  * uninitialized data in the PCI dev struct through /proc.
6586  */
6587 static int __init ipw2100_init(void)
6588 {
6589         int ret;
6590 
6591         printk(KERN_INFO DRV_NAME ": %s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
6592         printk(KERN_INFO DRV_NAME ": %s\n", DRV_COPYRIGHT);
6593 
6594         pm_qos_add_request(&ipw2100_pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
6595                            PM_QOS_DEFAULT_VALUE);
6596 
6597         ret = pci_register_driver(&ipw2100_pci_driver);
6598         if (ret)
6599                 goto out;
6600 
6601 #ifdef CONFIG_IPW2100_DEBUG
6602         ipw2100_debug_level = debug;
6603         ret = driver_create_file(&ipw2100_pci_driver.driver,
6604                                  &driver_attr_debug_level);
6605 #endif
6606 
6607 out:
6608         return ret;
6609 }
6610 
6611 /**
6612  * Cleanup ipw2100 driver registration
6613  */
6614 static void __exit ipw2100_exit(void)
6615 {
6616         /* FIXME: IPG: check that we have no instances of the devices open */
6617 #ifdef CONFIG_IPW2100_DEBUG
6618         driver_remove_file(&ipw2100_pci_driver.driver,
6619                            &driver_attr_debug_level);
6620 #endif
6621         pci_unregister_driver(&ipw2100_pci_driver);
6622         pm_qos_remove_request(&ipw2100_pm_qos_req);
6623 }
6624 
6625 module_init(ipw2100_init);
6626 module_exit(ipw2100_exit);
6627 
6628 static int ipw2100_wx_get_name(struct net_device *dev,
6629                                struct iw_request_info *info,
6630                                union iwreq_data *wrqu, char *extra)
6631 {
66