1 /******************************************************************************
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
50 #include "iwl-helpers.h"
52 #ifdef CONFIG_IWL3945_DEBUG
53 u32 iwl3945_debug_level;
56 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
57 struct iwl3945_tx_queue *txq);
59 /******************************************************************************
63 ******************************************************************************/
65 /* module parameters */
66 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
67 static int iwl3945_param_debug; /* def: 0 = minimal debug log messages */
68 static int iwl3945_param_disable; /* def: 0 = enable radio */
69 static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
70 int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
71 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
72 int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
75 * module name, copyright, version, etc.
76 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
79 #define DRV_DESCRIPTION \
80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
82 #ifdef CONFIG_IWL3945_DEBUG
88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
94 #define IWLWIFI_VERSION "1.1.19k" VD VS
95 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
96 #define DRV_VERSION IWLWIFI_VERSION
98 /* Change firmware file name, using "-" and incrementing number,
99 * *only* when uCode interface or architecture changes so that it
100 * is not compatible with earlier drivers.
101 * This number will also appear in << 8 position of 1st dword of uCode file */
102 #define IWL3945_UCODE_API "-1"
104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
105 MODULE_VERSION(DRV_VERSION);
106 MODULE_AUTHOR(DRV_COPYRIGHT);
107 MODULE_LICENSE("GPL");
109 static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
111 u16 fc = le16_to_cpu(hdr->frame_control);
112 int hdr_len = ieee80211_get_hdrlen(fc);
114 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
115 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
119 static const struct ieee80211_hw_mode *iwl3945_get_hw_mode(
120 struct iwl3945_priv *priv, int mode)
124 for (i = 0; i < 3; i++)
125 if (priv->modes[i].mode == mode)
126 return &priv->modes[i];
131 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
133 /* Single white space is for Linksys APs */
134 if (essid_len == 1 && essid[0] == ' ')
137 /* Otherwise, if the entire essid is 0, we assume it is hidden */
140 if (essid[essid_len] != '\0')
147 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
149 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
150 const char *s = essid;
153 if (iwl3945_is_empty_essid(essid, essid_len)) {
154 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
158 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
159 while (essid_len--) {
171 static void iwl3945_print_hex_dump(int level, void *p, u32 len)
173 #ifdef CONFIG_IWL3945_DEBUG
174 if (!(iwl3945_debug_level & level))
177 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
182 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
185 * Theory of operation
187 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
188 * of buffer descriptors, each of which points to one or more data buffers for
189 * the device to read from or fill. Driver and device exchange status of each
190 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
191 * entries in each circular buffer, to protect against confusing empty and full
194 * The device reads or writes the data in the queues via the device's several
195 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
197 * For Tx queue, there are low mark and high mark limits. If, after queuing
198 * the packet for Tx, free space become < low mark, Tx queue stopped. When
199 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
202 * The 3945 operates with six queues: One receive queue, one transmit queue
203 * (#4) for sending commands to the device firmware, and four transmit queues
204 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
205 ***************************************************/
207 static int iwl3945_queue_space(const struct iwl3945_queue *q)
209 int s = q->read_ptr - q->write_ptr;
211 if (q->read_ptr > q->write_ptr)
216 /* keep some reserve to not confuse empty and full situations */
224 * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
225 * @index -- current index
226 * @n_bd -- total number of entries in queue (must be power of 2)
228 static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
230 return ++index & (n_bd - 1);
234 * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
235 * @index -- current index
236 * @n_bd -- total number of entries in queue (must be power of 2)
238 static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
240 return --index & (n_bd - 1);
243 static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
245 return q->write_ptr > q->read_ptr ?
246 (i >= q->read_ptr && i < q->write_ptr) :
247 !(i < q->read_ptr && i >= q->write_ptr);
250 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
252 /* This is for scan command, the big buffer at end of command array */
254 return q->n_window; /* must be power of 2 */
256 /* Otherwise, use normal size buffers */
257 return index & (q->n_window - 1);
261 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
263 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
264 int count, int slots_num, u32 id)
267 q->n_window = slots_num;
270 /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
271 * and iwl3945_queue_dec_wrap are broken. */
272 BUG_ON(!is_power_of_2(count));
274 /* slots_num must be power-of-two size, otherwise
275 * get_cmd_index is broken. */
276 BUG_ON(!is_power_of_2(slots_num));
278 q->low_mark = q->n_window / 4;
282 q->high_mark = q->n_window / 8;
283 if (q->high_mark < 2)
286 q->write_ptr = q->read_ptr = 0;
292 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
294 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
295 struct iwl3945_tx_queue *txq, u32 id)
297 struct pci_dev *dev = priv->pci_dev;
299 /* Driver private data, only for Tx (not command) queues,
300 * not shared with device. */
301 if (id != IWL_CMD_QUEUE_NUM) {
302 txq->txb = kmalloc(sizeof(txq->txb[0]) *
303 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
305 IWL_ERROR("kmalloc for auxiliary BD "
306 "structures failed\n");
312 /* Circular buffer of transmit frame descriptors (TFDs),
313 * shared with device */
314 txq->bd = pci_alloc_consistent(dev,
315 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
319 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
320 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
337 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
339 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
340 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
342 struct pci_dev *dev = priv->pci_dev;
347 * Alloc buffer array for commands (Tx or other types of commands).
348 * For the command queue (#4), allocate command space + one big
349 * command for scan, since scan command is very huge; the system will
350 * not have two scans at the same time, so only one is needed.
351 * For data Tx queues (all other queues), no super-size command
354 len = sizeof(struct iwl3945_cmd) * slots_num;
355 if (txq_id == IWL_CMD_QUEUE_NUM)
356 len += IWL_MAX_SCAN_SIZE;
357 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
361 /* Alloc driver data array and TFD circular buffer */
362 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
364 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
368 txq->need_update = 0;
370 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
371 * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
372 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
374 /* Initialize queue high/low-water, head/tail indexes */
375 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
377 /* Tell device where to find queue, enable DMA channel. */
378 iwl3945_hw_tx_queue_init(priv, txq);
384 * iwl3945_tx_queue_free - Deallocate DMA queue.
385 * @txq: Transmit queue to deallocate.
387 * Empty queue by removing and destroying all BD's.
389 * 0-fill, but do not free "txq" descriptor structure.
391 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
393 struct iwl3945_queue *q = &txq->q;
394 struct pci_dev *dev = priv->pci_dev;
400 /* first, empty all BD's */
401 for (; q->write_ptr != q->read_ptr;
402 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
403 iwl3945_hw_txq_free_tfd(priv, txq);
405 len = sizeof(struct iwl3945_cmd) * q->n_window;
406 if (q->id == IWL_CMD_QUEUE_NUM)
407 len += IWL_MAX_SCAN_SIZE;
409 /* De-alloc array of command/tx buffers */
410 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
412 /* De-alloc circular buffer of TFDs */
414 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
415 txq->q.n_bd, txq->bd, txq->q.dma_addr);
417 /* De-alloc array of per-TFD driver data */
423 /* 0-fill queue descriptor structure */
424 memset(txq, 0, sizeof(*txq));
427 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
429 /*************** STATION TABLE MANAGEMENT ****
430 * mac80211 should be examined to determine if sta_info is duplicating
431 * the functionality provided here
434 /**************************************************************/
435 #if 0 /* temporary disable till we add real remove station */
437 * iwl3945_remove_station - Remove driver's knowledge of station.
439 * NOTE: This does not remove station from device's station table.
441 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
443 int index = IWL_INVALID_STATION;
447 spin_lock_irqsave(&priv->sta_lock, flags);
451 else if (is_broadcast_ether_addr(addr))
452 index = priv->hw_setting.bcast_sta_id;
454 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
455 if (priv->stations[i].used &&
456 !compare_ether_addr(priv->stations[i].sta.sta.addr,
462 if (unlikely(index == IWL_INVALID_STATION))
465 if (priv->stations[index].used) {
466 priv->stations[index].used = 0;
467 priv->num_stations--;
470 BUG_ON(priv->num_stations < 0);
473 spin_unlock_irqrestore(&priv->sta_lock, flags);
479 * iwl3945_clear_stations_table - Clear the driver's station table
481 * NOTE: This does not clear or otherwise alter the device's station table.
483 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
487 spin_lock_irqsave(&priv->sta_lock, flags);
489 priv->num_stations = 0;
490 memset(priv->stations, 0, sizeof(priv->stations));
492 spin_unlock_irqrestore(&priv->sta_lock, flags);
496 * iwl3945_add_station - Add station to station tables in driver and device
498 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
501 int index = IWL_INVALID_STATION;
502 struct iwl3945_station_entry *station;
503 unsigned long flags_spin;
504 DECLARE_MAC_BUF(mac);
507 spin_lock_irqsave(&priv->sta_lock, flags_spin);
510 else if (is_broadcast_ether_addr(addr))
511 index = priv->hw_setting.bcast_sta_id;
513 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
514 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
520 if (!priv->stations[i].used &&
521 index == IWL_INVALID_STATION)
525 /* These two conditions has the same outcome but keep them separate
526 since they have different meaning */
527 if (unlikely(index == IWL_INVALID_STATION)) {
528 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
532 if (priv->stations[index].used &&
533 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
534 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
538 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
539 station = &priv->stations[index];
541 priv->num_stations++;
543 /* Set up the REPLY_ADD_STA command to send to device */
544 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
545 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
546 station->sta.mode = 0;
547 station->sta.sta.sta_id = index;
548 station->sta.station_flags = 0;
550 if (priv->phymode == MODE_IEEE80211A)
551 rate = IWL_RATE_6M_PLCP;
553 rate = IWL_RATE_1M_PLCP;
555 /* Turn on both antennas for the station... */
556 station->sta.rate_n_flags =
557 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
558 station->current_rate.rate_n_flags =
559 le16_to_cpu(station->sta.rate_n_flags);
561 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
563 /* Add station to device's station table */
564 iwl3945_send_add_station(priv, &station->sta, flags);
569 /*************** DRIVER STATUS FUNCTIONS *****/
571 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
573 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
574 * set but EXIT_PENDING is not */
575 return test_bit(STATUS_READY, &priv->status) &&
576 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
577 !test_bit(STATUS_EXIT_PENDING, &priv->status);
580 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
582 return test_bit(STATUS_ALIVE, &priv->status);
585 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
587 return test_bit(STATUS_INIT, &priv->status);
590 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
592 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
593 test_bit(STATUS_RF_KILL_SW, &priv->status);
596 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
599 if (iwl3945_is_rfkill(priv))
602 return iwl3945_is_ready(priv);
605 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
607 #define IWL_CMD(x) case x : return #x
609 static const char *get_cmd_string(u8 cmd)
612 IWL_CMD(REPLY_ALIVE);
613 IWL_CMD(REPLY_ERROR);
615 IWL_CMD(REPLY_RXON_ASSOC);
616 IWL_CMD(REPLY_QOS_PARAM);
617 IWL_CMD(REPLY_RXON_TIMING);
618 IWL_CMD(REPLY_ADD_STA);
619 IWL_CMD(REPLY_REMOVE_STA);
620 IWL_CMD(REPLY_REMOVE_ALL_STA);
621 IWL_CMD(REPLY_3945_RX);
623 IWL_CMD(REPLY_RATE_SCALE);
624 IWL_CMD(REPLY_LEDS_CMD);
625 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
626 IWL_CMD(RADAR_NOTIFICATION);
627 IWL_CMD(REPLY_QUIET_CMD);
628 IWL_CMD(REPLY_CHANNEL_SWITCH);
629 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
630 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
631 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
632 IWL_CMD(POWER_TABLE_CMD);
633 IWL_CMD(PM_SLEEP_NOTIFICATION);
634 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
635 IWL_CMD(REPLY_SCAN_CMD);
636 IWL_CMD(REPLY_SCAN_ABORT_CMD);
637 IWL_CMD(SCAN_START_NOTIFICATION);
638 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
639 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
640 IWL_CMD(BEACON_NOTIFICATION);
641 IWL_CMD(REPLY_TX_BEACON);
642 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
643 IWL_CMD(QUIET_NOTIFICATION);
644 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
645 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
646 IWL_CMD(REPLY_BT_CONFIG);
647 IWL_CMD(REPLY_STATISTICS_CMD);
648 IWL_CMD(STATISTICS_NOTIFICATION);
649 IWL_CMD(REPLY_CARD_STATE_CMD);
650 IWL_CMD(CARD_STATE_NOTIFICATION);
651 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
658 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
661 * iwl3945_enqueue_hcmd - enqueue a uCode command
662 * @priv: device private data point
663 * @cmd: a point to the ucode command structure
665 * The function returns < 0 values to indicate the operation is
666 * failed. On success, it turns the index (> 0) of command in the
669 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
671 struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
672 struct iwl3945_queue *q = &txq->q;
673 struct iwl3945_tfd_frame *tfd;
675 struct iwl3945_cmd *out_cmd;
677 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
678 dma_addr_t phys_addr;
684 /* If any of the command structures end up being larger than
685 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
686 * we will need to increase the size of the TFD entries */
687 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
688 !(cmd->meta.flags & CMD_SIZE_HUGE));
690 if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
691 IWL_ERROR("No space for Tx\n");
695 spin_lock_irqsave(&priv->hcmd_lock, flags);
697 tfd = &txq->bd[q->write_ptr];
698 memset(tfd, 0, sizeof(*tfd));
700 control_flags = (u32 *) tfd;
702 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
703 out_cmd = &txq->cmd[idx];
705 out_cmd->hdr.cmd = cmd->id;
706 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
707 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
709 /* At this point, the out_cmd now has all of the incoming cmd
712 out_cmd->hdr.flags = 0;
713 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
714 INDEX_TO_SEQ(q->write_ptr));
715 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
716 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
718 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
719 offsetof(struct iwl3945_cmd, hdr);
720 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
722 pad = U32_PAD(cmd->len);
723 count = TFD_CTL_COUNT_GET(*control_flags);
724 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
726 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
727 "%d bytes at %d[%d]:%d\n",
728 get_cmd_string(out_cmd->hdr.cmd),
729 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
730 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
732 txq->need_update = 1;
734 /* Increment and update queue's write index */
735 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
736 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
738 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
739 return ret ? ret : idx;
742 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
746 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
748 /* An asynchronous command can not expect an SKB to be set. */
749 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
751 /* An asynchronous command MUST have a callback. */
752 BUG_ON(!cmd->meta.u.callback);
754 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
757 ret = iwl3945_enqueue_hcmd(priv, cmd);
759 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
760 get_cmd_string(cmd->id), ret);
766 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
770 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
772 BUG_ON(cmd->meta.flags & CMD_ASYNC);
774 /* A synchronous command can not have a callback set. */
775 BUG_ON(cmd->meta.u.callback != NULL);
777 if (atomic_xchg(&entry, 1)) {
778 IWL_ERROR("Error sending %s: Already sending a host command\n",
779 get_cmd_string(cmd->id));
783 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
785 if (cmd->meta.flags & CMD_WANT_SKB)
786 cmd->meta.source = &cmd->meta;
788 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
791 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
792 get_cmd_string(cmd->id), ret);
796 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
797 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
798 HOST_COMPLETE_TIMEOUT);
800 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
801 IWL_ERROR("Error sending %s: time out after %dms.\n",
802 get_cmd_string(cmd->id),
803 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
805 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
811 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
812 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
813 get_cmd_string(cmd->id));
817 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
818 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
819 get_cmd_string(cmd->id));
823 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
824 IWL_ERROR("Error: Response NULL in '%s'\n",
825 get_cmd_string(cmd->id));
834 if (cmd->meta.flags & CMD_WANT_SKB) {
835 struct iwl3945_cmd *qcmd;
837 /* Cancel the CMD_WANT_SKB flag for the cmd in the
838 * TX cmd queue. Otherwise in case the cmd comes
839 * in later, it will possibly set an invalid
840 * address (cmd->meta.source). */
841 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
842 qcmd->meta.flags &= ~CMD_WANT_SKB;
845 if (cmd->meta.u.skb) {
846 dev_kfree_skb_any(cmd->meta.u.skb);
847 cmd->meta.u.skb = NULL;
850 atomic_set(&entry, 0);
854 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
856 if (cmd->meta.flags & CMD_ASYNC)
857 return iwl3945_send_cmd_async(priv, cmd);
859 return iwl3945_send_cmd_sync(priv, cmd);
862 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
864 struct iwl3945_host_cmd cmd = {
870 return iwl3945_send_cmd_sync(priv, &cmd);
873 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
875 struct iwl3945_host_cmd cmd = {
881 return iwl3945_send_cmd_sync(priv, &cmd);
884 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
886 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
890 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
891 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
892 * @channel: Any channel valid for the requested phymode
894 * In addition to setting the staging RXON, priv->phymode is also set.
896 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
897 * in the staging RXON flag structure based on the phymode
899 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv, u8 phymode, u16 channel)
901 if (!iwl3945_get_channel_info(priv, phymode, channel)) {
902 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
907 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
908 (priv->phymode == phymode))
911 priv->staging_rxon.channel = cpu_to_le16(channel);
912 if (phymode == MODE_IEEE80211A)
913 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
915 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
917 priv->phymode = phymode;
919 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
925 * iwl3945_check_rxon_cmd - validate RXON structure is valid
927 * NOTE: This is really only useful during development and can eventually
928 * be #ifdef'd out once the driver is stable and folks aren't actively
931 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
936 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
937 error |= le32_to_cpu(rxon->flags &
938 (RXON_FLG_TGJ_NARROW_BAND_MSK |
939 RXON_FLG_RADAR_DETECT_MSK));
941 IWL_WARNING("check 24G fields %d | %d\n",
944 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
945 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
947 IWL_WARNING("check 52 fields %d | %d\n",
949 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
951 IWL_WARNING("check 52 CCK %d | %d\n",
954 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
956 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
958 /* make sure basic rates 6Mbps and 1Mbps are supported */
959 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
960 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
962 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
964 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
966 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
968 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
969 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
971 IWL_WARNING("check CCK and short slot %d | %d\n",
974 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
975 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
977 IWL_WARNING("check CCK & auto detect %d | %d\n",
980 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
981 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
983 IWL_WARNING("check TGG and auto detect %d | %d\n",
986 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
987 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
988 RXON_FLG_ANT_A_MSK)) == 0);
990 IWL_WARNING("check antenna %d %d\n", counter++, error);
993 IWL_WARNING("Tuning to channel %d\n",
994 le16_to_cpu(rxon->channel));
997 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
1004 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1005 * @priv: staging_rxon is compared to active_rxon
1007 * If the RXON structure is changing enough to require a new tune,
1008 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1009 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1011 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
1014 /* These items are only settable from the full RXON command */
1015 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1016 compare_ether_addr(priv->staging_rxon.bssid_addr,
1017 priv->active_rxon.bssid_addr) ||
1018 compare_ether_addr(priv->staging_rxon.node_addr,
1019 priv->active_rxon.node_addr) ||
1020 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1021 priv->active_rxon.wlap_bssid_addr) ||
1022 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1023 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1024 (priv->staging_rxon.air_propagation !=
1025 priv->active_rxon.air_propagation) ||
1026 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1029 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1030 * be updated with the RXON_ASSOC command -- however only some
1031 * flag transitions are allowed using RXON_ASSOC */
1033 /* Check if we are not switching bands */
1034 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1035 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1038 /* Check if we are switching association toggle */
1039 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1040 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1046 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1049 struct iwl3945_rx_packet *res = NULL;
1050 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1051 struct iwl3945_host_cmd cmd = {
1052 .id = REPLY_RXON_ASSOC,
1053 .len = sizeof(rxon_assoc),
1054 .meta.flags = CMD_WANT_SKB,
1055 .data = &rxon_assoc,
1057 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1058 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1060 if ((rxon1->flags == rxon2->flags) &&
1061 (rxon1->filter_flags == rxon2->filter_flags) &&
1062 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1063 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1064 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1068 rxon_assoc.flags = priv->staging_rxon.flags;
1069 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1070 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1071 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1072 rxon_assoc.reserved = 0;
1074 rc = iwl3945_send_cmd_sync(priv, &cmd);
1078 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1079 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1080 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1084 priv->alloc_rxb_skb--;
1085 dev_kfree_skb_any(cmd.meta.u.skb);
1091 * iwl3945_commit_rxon - commit staging_rxon to hardware
1093 * The RXON command in staging_rxon is committed to the hardware and
1094 * the active_rxon structure is updated with the new data. This
1095 * function correctly transitions out of the RXON_ASSOC_MSK state if
1096 * a HW tune is required based on the RXON structure changes.
1098 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1100 /* cast away the const for active_rxon in this function */
1101 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1103 DECLARE_MAC_BUF(mac);
1105 if (!iwl3945_is_alive(priv))
1108 /* always get timestamp with Rx frame */
1109 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1111 /* select antenna */
1112 priv->staging_rxon.flags &=
1113 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1114 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1116 rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1118 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1122 /* If we don't need to send a full RXON, we can use
1123 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1124 * and other flags for the current radio configuration. */
1125 if (!iwl3945_full_rxon_required(priv)) {
1126 rc = iwl3945_send_rxon_assoc(priv);
1128 IWL_ERROR("Error setting RXON_ASSOC "
1129 "configuration (%d).\n", rc);
1133 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1138 /* If we are currently associated and the new config requires
1139 * an RXON_ASSOC and the new config wants the associated mask enabled,
1140 * we must clear the associated from the active configuration
1141 * before we apply the new config */
1142 if (iwl3945_is_associated(priv) &&
1143 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1144 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1145 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1147 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1148 sizeof(struct iwl3945_rxon_cmd),
1149 &priv->active_rxon);
1151 /* If the mask clearing failed then we set
1152 * active_rxon back to what it was previously */
1154 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1155 IWL_ERROR("Error clearing ASSOC_MSK on current "
1156 "configuration (%d).\n", rc);
1161 IWL_DEBUG_INFO("Sending RXON\n"
1162 "* with%s RXON_FILTER_ASSOC_MSK\n"
1165 ((priv->staging_rxon.filter_flags &
1166 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1167 le16_to_cpu(priv->staging_rxon.channel),
1168 print_mac(mac, priv->staging_rxon.bssid_addr));
1170 /* Apply the new configuration */
1171 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1172 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1174 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1178 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1180 iwl3945_clear_stations_table(priv);
1182 /* If we issue a new RXON command which required a tune then we must
1183 * send a new TXPOWER command or we won't be able to Tx any frames */
1184 rc = iwl3945_hw_reg_send_txpower(priv);
1186 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1190 /* Add the broadcast address so we can send broadcast frames */
1191 if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1192 IWL_INVALID_STATION) {
1193 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1197 /* If we have set the ASSOC_MSK and we are in BSS mode then
1198 * add the IWL_AP_ID to the station rate table */
1199 if (iwl3945_is_associated(priv) &&
1200 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1201 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1202 == IWL_INVALID_STATION) {
1203 IWL_ERROR("Error adding AP address for transmit.\n");
1207 /* Init the hardware's rate fallback order based on the
1209 rc = iwl3945_init_hw_rate_table(priv);
1211 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1218 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1220 struct iwl3945_bt_cmd bt_cmd = {
1228 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1229 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1232 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1235 struct iwl3945_rx_packet *res;
1236 struct iwl3945_host_cmd cmd = {
1237 .id = REPLY_SCAN_ABORT_CMD,
1238 .meta.flags = CMD_WANT_SKB,
1241 /* If there isn't a scan actively going on in the hardware
1242 * then we are in between scan bands and not actually
1243 * actively scanning, so don't send the abort command */
1244 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1245 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1249 rc = iwl3945_send_cmd_sync(priv, &cmd);
1251 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1255 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1256 if (res->u.status != CAN_ABORT_STATUS) {
1257 /* The scan abort will return 1 for success or
1258 * 2 for "failure". A failure condition can be
1259 * due to simply not being in an active scan which
1260 * can occur if we send the scan abort before we
1261 * the microcode has notified us that a scan is
1263 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1264 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1265 clear_bit(STATUS_SCAN_HW, &priv->status);
1268 dev_kfree_skb_any(cmd.meta.u.skb);
1273 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1274 struct iwl3945_cmd *cmd,
1275 struct sk_buff *skb)
1283 * Use: Sets the device's internal card state to enable, disable, or halt
1285 * When in the 'enable' state the card operates as normal.
1286 * When in the 'disable' state, the card enters into a low power mode.
1287 * When in the 'halt' state, the card is shut down and must be fully
1288 * restarted to come back on.
1290 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1292 struct iwl3945_host_cmd cmd = {
1293 .id = REPLY_CARD_STATE_CMD,
1296 .meta.flags = meta_flag,
1299 if (meta_flag & CMD_ASYNC)
1300 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1302 return iwl3945_send_cmd(priv, &cmd);
1305 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1306 struct iwl3945_cmd *cmd, struct sk_buff *skb)
1308 struct iwl3945_rx_packet *res = NULL;
1311 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1315 res = (struct iwl3945_rx_packet *)skb->data;
1316 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1317 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1322 switch (res->u.add_sta.status) {
1323 case ADD_STA_SUCCESS_MSK:
1329 /* We didn't cache the SKB; let the caller free it */
1333 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1334 struct iwl3945_addsta_cmd *sta, u8 flags)
1336 struct iwl3945_rx_packet *res = NULL;
1338 struct iwl3945_host_cmd cmd = {
1339 .id = REPLY_ADD_STA,
1340 .len = sizeof(struct iwl3945_addsta_cmd),
1341 .meta.flags = flags,
1345 if (flags & CMD_ASYNC)
1346 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1348 cmd.meta.flags |= CMD_WANT_SKB;
1350 rc = iwl3945_send_cmd(priv, &cmd);
1352 if (rc || (flags & CMD_ASYNC))
1355 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1356 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1363 switch (res->u.add_sta.status) {
1364 case ADD_STA_SUCCESS_MSK:
1365 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1369 IWL_WARNING("REPLY_ADD_STA failed\n");
1374 priv->alloc_rxb_skb--;
1375 dev_kfree_skb_any(cmd.meta.u.skb);
1380 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1381 struct ieee80211_key_conf *keyconf,
1384 unsigned long flags;
1385 __le16 key_flags = 0;
1387 switch (keyconf->alg) {
1389 key_flags |= STA_KEY_FLG_CCMP;
1390 key_flags |= cpu_to_le16(
1391 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1392 key_flags &= ~STA_KEY_FLG_INVALID;
1399 spin_lock_irqsave(&priv->sta_lock, flags);
1400 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1401 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1402 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1405 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1407 priv->stations[sta_id].sta.key.key_flags = key_flags;
1408 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1409 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1411 spin_unlock_irqrestore(&priv->sta_lock, flags);
1413 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1414 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1418 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1420 unsigned long flags;
1422 spin_lock_irqsave(&priv->sta_lock, flags);
1423 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1424 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1425 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1426 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1427 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1428 spin_unlock_irqrestore(&priv->sta_lock, flags);
1430 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1431 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1435 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1437 struct list_head *element;
1439 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1440 priv->frames_count);
1442 while (!list_empty(&priv->free_frames)) {
1443 element = priv->free_frames.next;
1445 kfree(list_entry(element, struct iwl3945_frame, list));
1446 priv->frames_count--;
1449 if (priv->frames_count) {
1450 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1451 priv->frames_count);
1452 priv->frames_count = 0;
1456 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1458 struct iwl3945_frame *frame;
1459 struct list_head *element;
1460 if (list_empty(&priv->free_frames)) {
1461 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1463 IWL_ERROR("Could not allocate frame!\n");
1467 priv->frames_count++;
1471 element = priv->free_frames.next;
1473 return list_entry(element, struct iwl3945_frame, list);
1476 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1478 memset(frame, 0, sizeof(*frame));
1479 list_add(&frame->list, &priv->free_frames);
1482 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1483 struct ieee80211_hdr *hdr,
1484 const u8 *dest, int left)
1487 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1488 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1489 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1492 if (priv->ibss_beacon->len > left)
1495 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1497 return priv->ibss_beacon->len;
1500 static int iwl3945_rate_index_from_plcp(int plcp)
1504 for (i = 0; i < IWL_RATE_COUNT; i++)
1505 if (iwl3945_rates[i].plcp == plcp)
1510 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1514 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1515 i = iwl3945_rates[i].next_ieee) {
1516 if (rate_mask & (1 << i))
1517 return iwl3945_rates[i].plcp;
1520 return IWL_RATE_INVALID;
1523 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1525 struct iwl3945_frame *frame;
1526 unsigned int frame_size;
1530 frame = iwl3945_get_free_frame(priv);
1533 IWL_ERROR("Could not obtain free frame buffer for beacon "
1538 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1539 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1541 if (rate == IWL_INVALID_RATE)
1542 rate = IWL_RATE_6M_PLCP;
1544 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1545 if (rate == IWL_INVALID_RATE)
1546 rate = IWL_RATE_1M_PLCP;
1549 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1551 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1554 iwl3945_free_frame(priv, frame);
1559 /******************************************************************************
1561 * EEPROM related functions
1563 ******************************************************************************/
1565 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1567 memcpy(mac, priv->eeprom.mac_address, 6);
1571 * iwl3945_eeprom_init - read EEPROM contents
1573 * Load the EEPROM contents from adapter into priv->eeprom
1575 * NOTE: This routine uses the non-debug IO access functions.
1577 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1579 u16 *e = (u16 *)&priv->eeprom;
1580 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1582 int sz = sizeof(priv->eeprom);
1587 /* The EEPROM structure has several padding buffers within it
1588 * and when adding new EEPROM maps is subject to programmer errors
1589 * which may be very difficult to identify without explicitly
1590 * checking the resulting size of the eeprom map. */
1591 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1593 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1594 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1598 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1599 rc = iwl3945_eeprom_acquire_semaphore(priv);
1601 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1605 /* eeprom is an array of 16bit values */
1606 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1607 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1608 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1610 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1611 i += IWL_EEPROM_ACCESS_DELAY) {
1612 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1613 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1615 udelay(IWL_EEPROM_ACCESS_DELAY);
1618 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1619 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1622 e[addr / 2] = le16_to_cpu(r >> 16);
1628 /******************************************************************************
1630 * Misc. internal state and helper functions
1632 ******************************************************************************/
1633 #ifdef CONFIG_IWL3945_DEBUG
1636 * iwl3945_report_frame - dump frame to syslog during debug sessions
1638 * You may hack this function to show different aspects of received frames,
1639 * including selective frame dumps.
1640 * group100 parameter selects whether to show 1 out of 100 good frames.
1642 void iwl3945_report_frame(struct iwl3945_priv *priv,
1643 struct iwl3945_rx_packet *pkt,
1644 struct ieee80211_hdr *header, int group100)
1647 u32 print_summary = 0;
1648 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1665 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1666 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1667 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
1668 u8 *data = IWL_RX_DATA(pkt);
1671 fc = le16_to_cpu(header->frame_control);
1672 seq_ctl = le16_to_cpu(header->seq_ctrl);
1675 channel = le16_to_cpu(rx_hdr->channel);
1676 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1677 rate_sym = rx_hdr->rate;
1678 length = le16_to_cpu(rx_hdr->len);
1680 /* end-of-frame status and timestamp */
1681 status = le32_to_cpu(rx_end->status);
1682 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1683 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1684 tsf = le64_to_cpu(rx_end->timestamp);
1686 /* signal statistics */
1687 rssi = rx_stats->rssi;
1688 agc = rx_stats->agc;
1689 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1690 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1692 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1694 /* if data frame is to us and all is good,
1695 * (optionally) print summary for only 1 out of every 100 */
1696 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1697 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1700 print_summary = 1; /* print each frame */
1701 else if (priv->framecnt_to_us < 100) {
1702 priv->framecnt_to_us++;
1705 priv->framecnt_to_us = 0;
1710 /* print summary for all other frames */
1714 if (print_summary) {
1719 title = "100Frames";
1720 else if (fc & IEEE80211_FCTL_RETRY)
1722 else if (ieee80211_is_assoc_response(fc))
1724 else if (ieee80211_is_reassoc_response(fc))
1726 else if (ieee80211_is_probe_response(fc)) {
1728 print_dump = 1; /* dump frame contents */
1729 } else if (ieee80211_is_beacon(fc)) {
1731 print_dump = 1; /* dump frame contents */
1732 } else if (ieee80211_is_atim(fc))
1734 else if (ieee80211_is_auth(fc))
1736 else if (ieee80211_is_deauth(fc))
1738 else if (ieee80211_is_disassoc(fc))
1743 rate = iwl3945_rate_index_from_plcp(rate_sym);
1747 rate = iwl3945_rates[rate].ieee / 2;
1749 /* print frame summary.
1750 * MAC addresses show just the last byte (for brevity),
1751 * but you can hack it to show more, if you'd like to. */
1753 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1754 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1755 title, fc, header->addr1[5],
1756 length, rssi, channel, rate);
1758 /* src/dst addresses assume managed mode */
1759 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1760 "src=0x%02x, rssi=%u, tim=%lu usec, "
1761 "phy=0x%02x, chnl=%d\n",
1762 title, fc, header->addr1[5],
1763 header->addr3[5], rssi,
1764 tsf_low - priv->scan_start_tsf,
1765 phy_flags, channel);
1769 iwl3945_print_hex_dump(IWL_DL_RX, data, length);
1773 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1775 if (priv->hw_setting.shared_virt)
1776 pci_free_consistent(priv->pci_dev,
1777 sizeof(struct iwl3945_shared),
1778 priv->hw_setting.shared_virt,
1779 priv->hw_setting.shared_phys);
1783 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1785 * return : set the bit for each supported rate insert in ie
1787 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1788 u16 basic_rate, int *left)
1790 u16 ret_rates = 0, bit;
1795 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1796 if (bit & supported_rate) {
1798 rates[*cnt] = iwl3945_rates[i].ieee |
1799 ((bit & basic_rate) ? 0x80 : 0x00);
1803 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1812 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1814 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1815 struct ieee80211_mgmt *frame,
1816 int left, int is_direct)
1820 u16 active_rates, ret_rates, cck_rates;
1822 /* Make sure there is enough space for the probe request,
1823 * two mandatory IEs and the data */
1829 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1830 memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1831 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1832 memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1833 frame->seq_ctrl = 0;
1835 /* fill in our indirect SSID IE */
1842 pos = &(frame->u.probe_req.variable[0]);
1843 *pos++ = WLAN_EID_SSID;
1846 /* fill in our direct SSID IE... */
1849 left -= 2 + priv->essid_len;
1852 /* ... fill it in... */
1853 *pos++ = WLAN_EID_SSID;
1854 *pos++ = priv->essid_len;
1855 memcpy(pos, priv->essid, priv->essid_len);
1856 pos += priv->essid_len;
1857 len += 2 + priv->essid_len;
1860 /* fill in supported rate */
1866 /* ... fill it in... */
1867 *pos++ = WLAN_EID_SUPP_RATES;
1870 priv->active_rate = priv->rates_mask;
1871 active_rates = priv->active_rate;
1872 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1874 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1875 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1876 priv->active_rate_basic, &left);
1877 active_rates &= ~ret_rates;
1879 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1880 priv->active_rate_basic, &left);
1881 active_rates &= ~ret_rates;
1885 if (active_rates == 0)
1888 /* fill in supported extended rate */
1893 /* ... fill it in... */
1894 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1896 iwl3945_supported_rate_to_ie(pos, active_rates,
1897 priv->active_rate_basic, &left);
1908 #ifdef CONFIG_IWL3945_QOS
1909 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1910 struct iwl3945_qosparam_cmd *qos)
1913 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1914 sizeof(struct iwl3945_qosparam_cmd), qos);
1917 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1923 unsigned long flags;
1926 spin_lock_irqsave(&priv->lock, flags);
1927 priv->qos_data.qos_active = 0;
1929 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1930 if (priv->qos_data.qos_enable)
1931 priv->qos_data.qos_active = 1;
1932 if (!(priv->active_rate & 0xfff0)) {
1936 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1937 if (priv->qos_data.qos_enable)
1938 priv->qos_data.qos_active = 1;
1939 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1944 if (priv->qos_data.qos_active)
1947 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1948 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1949 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1950 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1951 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1953 if (priv->qos_data.qos_active) {
1955 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1956 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1957 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1958 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1959 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1962 priv->qos_data.def_qos_parm.ac[i].cw_min =
1963 cpu_to_le16((cw_min + 1) / 2 - 1);
1964 priv->qos_data.def_qos_parm.ac[i].cw_max =
1965 cpu_to_le16(cw_max);
1966 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1968 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1971 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1973 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1976 priv->qos_data.def_qos_parm.ac[i].cw_min =
1977 cpu_to_le16((cw_min + 1) / 4 - 1);
1978 priv->qos_data.def_qos_parm.ac[i].cw_max =
1979 cpu_to_le16((cw_max + 1) / 2 - 1);
1980 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1981 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1983 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1986 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1989 for (i = 1; i < 4; i++) {
1990 priv->qos_data.def_qos_parm.ac[i].cw_min =
1991 cpu_to_le16(cw_min);
1992 priv->qos_data.def_qos_parm.ac[i].cw_max =
1993 cpu_to_le16(cw_max);
1994 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1995 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1996 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1999 IWL_DEBUG_QOS("set QoS to default \n");
2001 spin_unlock_irqrestore(&priv->lock, flags);
2004 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
2006 unsigned long flags;
2008 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2011 if (!priv->qos_data.qos_enable)
2014 spin_lock_irqsave(&priv->lock, flags);
2015 priv->qos_data.def_qos_parm.qos_flags = 0;
2017 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2018 !priv->qos_data.qos_cap.q_AP.txop_request)
2019 priv->qos_data.def_qos_parm.qos_flags |=
2020 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2022 if (priv->qos_data.qos_active)
2023 priv->qos_data.def_qos_parm.qos_flags |=
2024 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2026 spin_unlock_irqrestore(&priv->lock, flags);
2028 if (force || iwl3945_is_associated(priv)) {
2029 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2030 priv->qos_data.qos_active);
2032 iwl3945_send_qos_params_command(priv,
2033 &(priv->qos_data.def_qos_parm));
2037 #endif /* CONFIG_IWL3945_QOS */
2039 * Power management (not Tx power!) functions
2041 #define MSEC_TO_USEC 1024
2043 #define NOSLP __constant_cpu_to_le32(0)
2044 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2045 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2046 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2047 __constant_cpu_to_le32(X1), \
2048 __constant_cpu_to_le32(X2), \
2049 __constant_cpu_to_le32(X3), \
2050 __constant_cpu_to_le32(X4)}
2053 /* default power management (not Tx power) table values */
2055 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
2056 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2057 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2058 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2059 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2060 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2061 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2065 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
2066 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2067 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2068 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2069 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2070 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2071 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2072 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2073 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2074 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2075 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2078 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
2081 struct iwl3945_power_mgr *pow_data;
2082 int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
2085 IWL_DEBUG_POWER("Initialize power \n");
2087 pow_data = &(priv->power_data);
2089 memset(pow_data, 0, sizeof(*pow_data));
2091 pow_data->active_index = IWL_POWER_RANGE_0;
2092 pow_data->dtim_val = 0xffff;
2094 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2095 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2097 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2101 struct iwl3945_powertable_cmd *cmd;
2103 IWL_DEBUG_POWER("adjust power command flags\n");
2105 for (i = 0; i < IWL_POWER_AC; i++) {
2106 cmd = &pow_data->pwr_range_0[i].cmd;
2109 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2111 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2117 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
2118 struct iwl3945_powertable_cmd *cmd, u32 mode)
2123 struct iwl3945_power_vec_entry *range;
2125 struct iwl3945_power_mgr *pow_data;
2127 if (mode > IWL_POWER_INDEX_5) {
2128 IWL_DEBUG_POWER("Error invalid power mode \n");
2131 pow_data = &(priv->power_data);
2133 if (pow_data->active_index == IWL_POWER_RANGE_0)
2134 range = &pow_data->pwr_range_0[0];
2136 range = &pow_data->pwr_range_1[1];
2138 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
2140 #ifdef IWL_MAC80211_DISABLE
2141 if (priv->assoc_network != NULL) {
2142 unsigned long flags;
2144 period = priv->assoc_network->tim.tim_period;
2146 #endif /*IWL_MAC80211_DISABLE */
2147 skip = range[mode].no_dtim;
2156 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2158 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2159 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2160 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2163 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2164 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2165 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2168 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2169 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2170 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2171 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2172 le32_to_cpu(cmd->sleep_interval[0]),
2173 le32_to_cpu(cmd->sleep_interval[1]),
2174 le32_to_cpu(cmd->sleep_interval[2]),
2175 le32_to_cpu(cmd->sleep_interval[3]),
2176 le32_to_cpu(cmd->sleep_interval[4]));
2181 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2183 u32 uninitialized_var(final_mode);
2185 struct iwl3945_powertable_cmd cmd;
2187 /* If on battery, set to 3,
2188 * if plugged into AC power, set to CAM ("continuously aware mode"),
2189 * else user level */
2191 case IWL_POWER_BATTERY:
2192 final_mode = IWL_POWER_INDEX_3;
2195 final_mode = IWL_POWER_MODE_CAM;
2202 iwl3945_update_power_cmd(priv, &cmd, final_mode);
2204 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2206 if (final_mode == IWL_POWER_MODE_CAM)
2207 clear_bit(STATUS_POWER_PMI, &priv->status);
2209 set_bit(STATUS_POWER_PMI, &priv->status);
2214 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2216 /* Filter incoming packets to determine if they are targeted toward
2217 * this network, discarding packets coming from ourselves */
2218 switch (priv->iw_mode) {
2219 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2220 /* packets from our adapter are dropped (echo) */
2221 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2223 /* {broad,multi}cast packets to our IBSS go through */
2224 if (is_multicast_ether_addr(header->addr1))
2225 return !compare_ether_addr(header->addr3, priv->bssid);
2226 /* packets to our adapter go through */
2227 return !compare_ether_addr(header->addr1, priv->mac_addr);
2228 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2229 /* packets from our adapter are dropped (echo) */
2230 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2232 /* {broad,multi}cast packets to our BSS go through */
2233 if (is_multicast_ether_addr(header->addr1))
2234 return !compare_ether_addr(header->addr2, priv->bssid);
2235 /* packets to our adapter go through */
2236 return !compare_ether_addr(header->addr1, priv->mac_addr);
2242 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2244 static const char *iwl3945_get_tx_fail_reason(u32 status)
2246 switch (status & TX_STATUS_MSK) {
2247 case TX_STATUS_SUCCESS:
2249 TX_STATUS_ENTRY(SHORT_LIMIT);
2250 TX_STATUS_ENTRY(LONG_LIMIT);
2251 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2252 TX_STATUS_ENTRY(MGMNT_ABORT);
2253 TX_STATUS_ENTRY(NEXT_FRAG);
2254 TX_STATUS_ENTRY(LIFE_EXPIRE);
2255 TX_STATUS_ENTRY(DEST_PS);
2256 TX_STATUS_ENTRY(ABORTED);
2257 TX_STATUS_ENTRY(BT_RETRY);
2258 TX_STATUS_ENTRY(STA_INVALID);
2259 TX_STATUS_ENTRY(FRAG_DROPPED);
2260 TX_STATUS_ENTRY(TID_DISABLE);
2261 TX_STATUS_ENTRY(FRAME_FLUSHED);
2262 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2263 TX_STATUS_ENTRY(TX_LOCKED);
2264 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2271 * iwl3945_scan_cancel - Cancel any currently executing HW scan
2273 * NOTE: priv->mutex is not required before calling this function
2275 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2277 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2278 clear_bit(STATUS_SCANNING, &priv->status);
2282 if (test_bit(STATUS_SCANNING, &priv->status)) {
2283 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2284 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2285 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2286 queue_work(priv->workqueue, &priv->abort_scan);
2289 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2291 return test_bit(STATUS_SCANNING, &priv->status);
2298 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2299 * @ms: amount of time to wait (in milliseconds) for scan to abort
2301 * NOTE: priv->mutex must be held before calling this function
2303 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2305 unsigned long now = jiffies;
2308 ret = iwl3945_scan_cancel(priv);
2310 mutex_unlock(&priv->mutex);
2311 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2312 test_bit(STATUS_SCANNING, &priv->status))
2314 mutex_lock(&priv->mutex);
2316 return test_bit(STATUS_SCANNING, &priv->status);
2322 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2324 /* Reset ieee stats */
2326 /* We don't reset the net_device_stats (ieee->stats) on
2329 priv->last_seq_num = -1;
2330 priv->last_frag_num = -1;
2331 priv->last_packet_time = 0;
2333 iwl3945_scan_cancel(priv);
2336 #define MAX_UCODE_BEACON_INTERVAL 1024
2337 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2339 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2342 u16 beacon_factor = 0;
2345 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2346 / MAX_UCODE_BEACON_INTERVAL;
2347 new_val = beacon_val / beacon_factor;
2349 return cpu_to_le16(new_val);
2352 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2354 u64 interval_tm_unit;
2356 unsigned long flags;
2357 struct ieee80211_conf *conf = NULL;
2360 conf = ieee80211_get_hw_conf(priv->hw);
2362 spin_lock_irqsave(&priv->lock, flags);
2363 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2364 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2366 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2368 tsf = priv->timestamp1;
2369 tsf = ((tsf << 32) | priv->timestamp0);
2371 beacon_int = priv->beacon_int;
2372 spin_unlock_irqrestore(&priv->lock, flags);
2374 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2375 if (beacon_int == 0) {
2376 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2377 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2379 priv->rxon_timing.beacon_interval =
2380 cpu_to_le16(beacon_int);
2381 priv->rxon_timing.beacon_interval =
2382 iwl3945_adjust_beacon_interval(
2383 le16_to_cpu(priv->rxon_timing.beacon_interval));
2386 priv->rxon_timing.atim_window = 0;
2388 priv->rxon_timing.beacon_interval =
2389 iwl3945_adjust_beacon_interval(conf->beacon_int);
2390 /* TODO: we need to get atim_window from upper stack
2391 * for now we set to 0 */
2392 priv->rxon_timing.atim_window = 0;
2396 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2397 result = do_div(tsf, interval_tm_unit);
2398 priv->rxon_timing.beacon_init_val =
2399 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2402 ("beacon interval %d beacon timer %d beacon tim %d\n",
2403 le16_to_cpu(priv->rxon_timing.beacon_interval),
2404 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2405 le16_to_cpu(priv->rxon_timing.atim_window));
2408 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2410 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2411 IWL_ERROR("APs don't scan.\n");
2415 if (!iwl3945_is_ready_rf(priv)) {
2416 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2420 if (test_bit(STATUS_SCANNING, &priv->status)) {
2421 IWL_DEBUG_SCAN("Scan already in progress.\n");
2425 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2426 IWL_DEBUG_SCAN("Scan request while abort pending. "
2431 IWL_DEBUG_INFO("Starting scan...\n");
2432 priv->scan_bands = 2;
2433 set_bit(STATUS_SCANNING, &priv->status);
2434 priv->scan_start = jiffies;
2435 priv->scan_pass_start = priv->scan_start;
2437 queue_work(priv->workqueue, &priv->request_scan);
2442 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2444 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2447 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2449 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2454 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode)
2456 if (phymode == MODE_IEEE80211A) {
2457 priv->staging_rxon.flags &=
2458 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2459 | RXON_FLG_CCK_MSK);
2460 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2462 /* Copied from iwl3945_bg_post_associate() */
2463 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2464 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2466 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2468 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2469 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2471 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2472 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2473 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2478 * initialize rxon structure with default values from eeprom
2480 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2482 const struct iwl3945_channel_info *ch_info;
2484 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2486 switch (priv->iw_mode) {
2487 case IEEE80211_IF_TYPE_AP:
2488 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2491 case IEEE80211_IF_TYPE_STA:
2492 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2493 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2496 case IEEE80211_IF_TYPE_IBSS:
2497 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2498 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2499 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2500 RXON_FILTER_ACCEPT_GRP_MSK;
2503 case IEEE80211_IF_TYPE_MNTR:
2504 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2505 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2506 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2511 /* TODO: Figure out when short_preamble would be set and cache from
2513 if (!hw_to_local(priv->hw)->short_preamble)
2514 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2516 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2519 ch_info = iwl3945_get_channel_info(priv, priv->phymode,
2520 le16_to_cpu(priv->staging_rxon.channel));
2523 ch_info = &priv->channel_info[0];
2526 * in some case A channels are all non IBSS
2527 * in this case force B/G channel
2529 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2530 !(is_channel_ibss(ch_info)))
2531 ch_info = &priv->channel_info[0];
2533 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2534 if (is_channel_a_band(ch_info))
2535 priv->phymode = MODE_IEEE80211A;
2537 priv->phymode = MODE_IEEE80211G;
2539 iwl3945_set_flags_for_phymode(priv, priv->phymode);
2541 priv->staging_rxon.ofdm_basic_rates =
2542 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2543 priv->staging_rxon.cck_basic_rates =
2544 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2547 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2549 if (!iwl3945_is_ready_rf(priv))
2552 if (mode == IEEE80211_IF_TYPE_IBSS) {
2553 const struct iwl3945_channel_info *ch_info;
2555 ch_info = iwl3945_get_channel_info(priv,
2557 le16_to_cpu(priv->staging_rxon.channel));
2559 if (!ch_info || !is_channel_ibss(ch_info)) {
2560 IWL_ERROR("channel %d not IBSS channel\n",
2561 le16_to_cpu(priv->staging_rxon.channel));
2566 cancel_delayed_work(&priv->scan_check);
2567 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2568 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2569 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2573 priv->iw_mode = mode;
2575 iwl3945_connection_init_rx_config(priv);
2576 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2578 iwl3945_clear_stations_table(priv);
2580 iwl3945_commit_rxon(priv);
2585 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2586 struct ieee80211_tx_control *ctl,
2587 struct iwl3945_cmd *cmd,
2588 struct sk_buff *skb_frag,
2591 struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2593 switch (keyinfo->alg) {
2595 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2596 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2597 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2602 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2605 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2608 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2613 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2614 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2616 if (keyinfo->keylen == 13)
2617 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2619 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2621 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2622 "with key %d\n", ctl->key_idx);
2626 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2632 * handle build REPLY_TX command notification.
2634 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2635 struct iwl3945_cmd *cmd,
2636 struct ieee80211_tx_control *ctrl,
2637 struct ieee80211_hdr *hdr,
2638 int is_unicast, u8 std_id)
2641 u16 fc = le16_to_cpu(hdr->frame_control);
2642 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2644 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2645 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2646 tx_flags |= TX_CMD_FLG_ACK_MSK;
2647 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2648 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2649 if (ieee80211_is_probe_response(fc) &&
2650 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2651 tx_flags |= TX_CMD_FLG_TSF_MSK;
2653 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2654 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2657 cmd->cmd.tx.sta_id = std_id;
2658 if (ieee80211_get_morefrag(hdr))
2659 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2661 qc = ieee80211_get_qos_ctrl(hdr);
2663 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2664 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2666 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2668 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2669 tx_flags |= TX_CMD_FLG_RTS_MSK;
2670 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2671 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2672 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2673 tx_flags |= TX_CMD_FLG_CTS_MSK;
2676 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2677 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2679 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2680 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2681 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2682 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2683 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2685 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2687 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2689 cmd->cmd.tx.driver_txop = 0;
2690 cmd->cmd.tx.tx_flags = tx_flags;
2691 cmd->cmd.tx.next_frame_len = 0;
2695 * iwl3945_get_sta_id - Find station's index within station table
2697 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2700 u16 fc = le16_to_cpu(hdr->frame_control);
2702 /* If this frame is broadcast or management, use broadcast station id */
2703 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2704 is_multicast_ether_addr(hdr->addr1))
2705 return priv->hw_setting.bcast_sta_id;
2707 switch (priv->iw_mode) {
2709 /* If we are a client station in a BSS network, use the special
2710 * AP station entry (that's the only station we communicate with) */
2711 case IEEE80211_IF_TYPE_STA:
2714 /* If we are an AP, then find the station, or use BCAST */
2715 case IEEE80211_IF_TYPE_AP:
2716 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2717 if (sta_id != IWL_INVALID_STATION)
2719 return priv->hw_setting.bcast_sta_id;
2721 /* If this frame is going out to an IBSS network, find the station,
2722 * or create a new station table entry */
2723 case IEEE80211_IF_TYPE_IBSS: {
2724 DECLARE_MAC_BUF(mac);
2726 /* Create new station table entry */
2727 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2728 if (sta_id != IWL_INVALID_STATION)
2731 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2733 if (sta_id != IWL_INVALID_STATION)
2736 IWL_DEBUG_DROP("Station %s not in station map. "
2737 "Defaulting to broadcast...\n",
2738 print_mac(mac, hdr->addr1));
2739 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2740 return priv->hw_setting.bcast_sta_id;
2743 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2744 return priv->hw_setting.bcast_sta_id;
2749 * start REPLY_TX command process
2751 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2752 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2754 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2755 struct iwl3945_tfd_frame *tfd;
2757 int txq_id = ctl->queue;
2758 struct iwl3945_tx_queue *txq = NULL;
2759 struct iwl3945_queue *q = NULL;
2760 dma_addr_t phys_addr;
2761 dma_addr_t txcmd_phys;
2762 struct iwl3945_cmd *out_cmd = NULL;
2763 u16 len, idx, len_org;
2764 u8 id, hdr_len, unicast;
2769 u8 wait_write_ptr = 0;
2770 unsigned long flags;
2773 spin_lock_irqsave(&priv->lock, flags);
2774 if (iwl3945_is_rfkill(priv)) {
2775 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2779 if (!priv->interface_id) {
2780 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2784 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2785 IWL_ERROR("ERROR: No TX rate available.\n");
2789 unicast = !is_multicast_ether_addr(hdr->addr1);
2792 fc = le16_to_cpu(hdr->frame_control);
2794 #ifdef CONFIG_IWL3945_DEBUG
2795 if (ieee80211_is_auth(fc))
2796 IWL_DEBUG_TX("Sending AUTH frame\n");
2797 else if (ieee80211_is_assoc_request(fc))
2798 IWL_DEBUG_TX("Sending ASSOC frame\n");
2799 else if (ieee80211_is_reassoc_request(fc))
2800 IWL_DEBUG_TX("Sending REASSOC frame\n");
2803 /* drop all data frame if we are not associated */
2804 if (!iwl3945_is_associated(priv) && !priv->assoc_id &&
2805 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2806 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2810 spin_unlock_irqrestore(&priv->lock, flags);
2812 hdr_len = ieee80211_get_hdrlen(fc);
2814 /* Find (or create) index into station table for destination station */
2815 sta_id = iwl3945_get_sta_id(priv, hdr);
2816 if (sta_id == IWL_INVALID_STATION) {
2817 DECLARE_MAC_BUF(mac);
2819 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2820 print_mac(mac, hdr->addr1));
2824 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2826 qc = ieee80211_get_qos_ctrl(hdr);
2828 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2829 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2831 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2833 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2837 /* Descriptor for chosen Tx queue */
2838 txq = &priv->txq[txq_id];
2841 spin_lock_irqsave(&priv->lock, flags);
2843 /* Set up first empty TFD within this queue's circular TFD buffer */
2844 tfd = &txq->bd[q->write_ptr];
2845 memset(tfd, 0, sizeof(*tfd));
2846 control_flags = (u32 *) tfd;
2847 idx = get_cmd_index(q, q->write_ptr, 0);
2849 /* Set up driver data for this TFD */
2850 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2851 txq->txb[q->write_ptr].skb[0] = skb;
2852 memcpy(&(txq->txb[q->write_ptr].status.control),
2853 ctl, sizeof(struct ieee80211_tx_control));
2855 /* Init first empty entry in queue's array of Tx/cmd buffers */
2856 out_cmd = &txq->cmd[idx];
2857 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2858 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2861 * Set up the Tx-command (not MAC!) header.
2862 * Store the chosen Tx queue and TFD index within the sequence field;
2863 * after Tx, uCode's Tx response will return this value so driver can
2864 * locate the frame within the tx queue and do post-tx processing.
2866 out_cmd->hdr.cmd = REPLY_TX;
2867 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2868 INDEX_TO_SEQ(q->write_ptr)));
2870 /* Copy MAC header from skb into command buffer */
2871 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2874 * Use the first empty entry in this queue's command buffer array
2875 * to contain the Tx command and MAC header concatenated together
2876 * (payload data will be in another buffer).
2877 * Size of this varies, due to varying MAC header length.
2878 * If end is not dword aligned, we'll have 2 extra bytes at the end
2879 * of the MAC header (device reads on dword boundaries).
2880 * We'll tell device about this padding later.
2882 len = priv->hw_setting.tx_cmd_len +
2883 sizeof(struct iwl3945_cmd_header) + hdr_len;
2886 len = (len + 3) & ~3;
2893 /* Physical address of this Tx command's header (not MAC header!),
2894 * within command buffer array. */
2895 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2896 offsetof(struct iwl3945_cmd, hdr);
2898 /* Add buffer containing Tx command and MAC(!) header to TFD's
2900 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2902 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2903 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2905 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2906 * if any (802.11 null frames have no payload). */
2907 len = skb->len - hdr_len;
2909 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2910 len, PCI_DMA_TODEVICE);
2911 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2915 /* If there is no payload, then we use only one Tx buffer */
2916 *control_flags = TFD_CTL_COUNT_SET(1);
2918 /* Else use 2 buffers.
2919 * Tell 3945 about any padding after MAC header */
2920 *control_flags = TFD_CTL_COUNT_SET(2) |
2921 TFD_CTL_PAD_SET(U32_PAD(len));
2923 /* Total # bytes to be transmitted */
2924 len = (u16)skb->len;
2925 out_cmd->cmd.tx.len = cpu_to_le16(len);
2927 /* TODO need this for burst mode later on */
2928 iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2930 /* set is_hcca to 0; it probably will never be implemented */
2931 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2933 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2934 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2936 if (!ieee80211_get_morefrag(hdr)) {
2937 txq->need_update = 1;
2939 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2940 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2944 txq->need_update = 0;
2947 iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2948 sizeof(out_cmd->cmd.tx));
2950 iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2951 ieee80211_get_hdrlen(fc));
2953 /* Tell device the write index *just past* this latest filled TFD */
2954 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2955 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2956 spin_unlock_irqrestore(&priv->lock, flags);
2961 if ((iwl3945_queue_space(q) < q->high_mark)
2962 && priv->mac80211_registered) {
2963 if (wait_write_ptr) {
2964 spin_lock_irqsave(&priv->lock, flags);
2965 txq->need_update = 1;
2966 iwl3945_tx_queue_update_write_ptr(priv, txq);
2967 spin_unlock_irqrestore(&priv->lock, flags);
2970 ieee80211_stop_queue(priv->hw, ctl->queue);
2976 spin_unlock_irqrestore(&priv->lock, flags);
2981 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2983 const struct ieee80211_hw_mode *hw = NULL;
2984 struct ieee80211_rate *rate;
2987 hw = iwl3945_get_hw_mode(priv, priv->phymode);
2989 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2993 priv->active_rate = 0;
2994 priv->active_rate_basic = 0;
2996 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2997 hw->mode == MODE_IEEE80211A ?
2998 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3000 for (i = 0; i < hw->num_rates; i++) {
3001 rate = &(hw->rates[i]);
3002 if ((rate->val < IWL_RATE_COUNT) &&
3003 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3004 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3005 rate->val, iwl3945_rates[rate->val].plcp,
3006 (rate->flags & IEEE80211_RATE_BASIC) ?
3008 priv->active_rate |= (1 << rate->val);
3009 if (rate->flags & IEEE80211_RATE_BASIC)
3010 priv->active_rate_basic |= (1 << rate->val);
3012 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3013 rate->val, iwl3945_rates[rate->val].plcp);
3016 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3017 priv->active_rate, priv->active_rate_basic);
3020 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3021 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3024 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3025 priv->staging_rxon.cck_basic_rates =
3026 ((priv->active_rate_basic &
3027 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3029 priv->staging_rxon.cck_basic_rates =
3030 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3032 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3033 priv->staging_rxon.ofdm_basic_rates =
3034 ((priv->active_rate_basic &
3035 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3036 IWL_FIRST_OFDM_RATE) & 0xFF;
3038 priv->staging_rxon.ofdm_basic_rates =
3039 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3042 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
3044 unsigned long flags;
3046 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3049 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3050 disable_radio ? "OFF" : "ON");
3052 if (disable_radio) {
3053 iwl3945_scan_cancel(priv);
3054 /* FIXME: This is a workaround for AP */
3055 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3056 spin_lock_irqsave(&priv->lock, flags);
3057 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3058 CSR_UCODE_SW_BIT_RFKILL);
3059 spin_unlock_irqrestore(&priv->lock, flags);
3060 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3061 set_bit(STATUS_RF_KILL_SW, &priv->status);
3066 spin_lock_irqsave(&priv->lock, flags);
3067 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3069 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3070 spin_unlock_irqrestore(&priv->lock, flags);
3075 spin_lock_irqsave(&priv->lock, flags);
3076 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3077 if (!iwl3945_grab_nic_access(priv))
3078 iwl3945_release_nic_access(priv);
3079 spin_unlock_irqrestore(&priv->lock, flags);
3081 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3082 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3083 "disabled by HW switch\n");
3087 queue_work(priv->workqueue, &priv->restart);
3091 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
3092 u32 decrypt_res, struct ieee80211_rx_status *stats)
3095 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3097 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3100 if (!(fc & IEEE80211_FCTL_PROTECTED))
3103 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3104 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3105 case RX_RES_STATUS_SEC_TYPE_TKIP:
3106 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3107 RX_RES_STATUS_BAD_ICV_MIC)
3108 stats->flag |= RX_FLAG_MMIC_ERROR;
3109 case RX_RES_STATUS_SEC_TYPE_WEP:
3110 case RX_RES_STATUS_SEC_TYPE_CCMP:
3111 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3112 RX_RES_STATUS_DECRYPT_OK) {
3113 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3114 stats->flag |= RX_FLAG_DECRYPTED;
3123 void iwl3945_handle_data_packet_monitor(struct iwl3945_priv *priv,
3124 struct iwl3945_rx_mem_buffer *rxb,
3125 void *data, short len,
3126 struct ieee80211_rx_status *stats,
3129 struct iwl3945_rt_rx_hdr *iwl3945_rt;
3131 /* First cache any information we need before we overwrite
3132 * the information provided in the skb from the hardware */
3133 s8 signal = stats->ssi;
3135 int rate = stats->rate;
3136 u64 tsf = stats->mactime;
3137 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3139 /* We received data from the HW, so stop the watchdog */
3140 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl3945_rt)) {
3141 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3145 /* copy the frame data to write after where the radiotap header goes */
3146 iwl3945_rt = (void *)rxb->skb->data;
3147 memmove(iwl3945_rt->payload, data, len);
3149 iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3150 iwl3945_rt->rt_hdr.it_pad = 0; /* always good to zero */
3152 /* total header + data */
3153 iwl3945_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl3945_rt));
3155 /* Set the size of the skb to the size of the frame */
3156 skb_put(rxb->skb, sizeof(*iwl3945_rt) + len);
3158 /* Big bitfield of all the fields we provide in radiotap */
3159 iwl3945_rt->rt_hdr.it_present =
3160 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3161 (1 << IEEE80211_RADIOTAP_FLAGS) |
3162 (1 << IEEE80211_RADIOTAP_RATE) |
3163 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3164 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3165 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3166 (1 << IEEE80211_RADIOTAP_ANTENNA));
3168 /* Zero the flags, we'll add to them as we go */
3169 iwl3945_rt->rt_flags = 0;
3171 iwl3945_rt->rt_tsf = cpu_to_le64(tsf);
3173 /* Convert to dBm */
3174 iwl3945_rt->rt_dbmsignal = signal;
3175 iwl3945_rt->rt_dbmnoise = noise;
3177 /* Convert the channel frequency and set the flags */
3178 iwl3945_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3179 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3180 iwl3945_rt->rt_chbitmask =
3181 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3182 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3183 iwl3945_rt->rt_chbitmask =
3184 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3186 iwl3945_rt->rt_chbitmask =
3187 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3189 rate = iwl3945_rate_index_from_plcp(rate);
3191 iwl3945_rt->rt_rate = 0;
3193 iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
3195 /* antenna number */
3196 iwl3945_rt->rt_antenna =
3197 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3199 /* set the preamble flag if we have it */
3200 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3201 iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3203 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3205 stats->flag |= RX_FLAG_RADIOTAP;
3206 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3211 #define IWL_PACKET_RETRY_TIME HZ
3213 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
3215 u16 sc = le16_to_cpu(header->seq_ctrl);
3216 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3217 u16 frag = sc & IEEE80211_SCTL_FRAG;
3218 u16 *last_seq, *last_frag;
3219 unsigned long *last_time;
3221 switch (priv->iw_mode) {
3222 case IEEE80211_IF_TYPE_IBSS:{
3223 struct list_head *p;
3224 struct iwl3945_ibss_seq *entry = NULL;
3225 u8 *mac = header->addr2;
3226 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3228 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3229 entry = list_entry(p, struct iwl3945_ibss_seq, list);
3230 if (!compare_ether_addr(entry->mac, mac))
3233 if (p == &priv->ibss_mac_hash[index]) {
3234 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3236 IWL_ERROR("Cannot malloc new mac entry\n");
3239 memcpy(entry->mac, mac, ETH_ALEN);
3240 entry->seq_num = seq;
3241 entry->frag_num = frag;
3242 entry->packet_time = jiffies;
3243 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3246 last_seq = &entry->seq_num;
3247 last_frag = &entry->frag_num;
3248 last_time = &entry->packet_time;
3251 case IEEE80211_IF_TYPE_STA:
3252 last_seq = &priv->last_seq_num;
3253 last_frag = &priv->last_frag_num;
3254 last_time = &priv->last_packet_time;
3259 if ((*last_seq == seq) &&
3260 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3261 if (*last_frag == frag)
3263 if (*last_frag + 1 != frag)
3264 /* out-of-order fragment */
3270 *last_time = jiffies;
3277 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3279 #include "iwl-spectrum.h"
3281 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3282 #define BEACON_TIME_MASK_HIGH 0xFF000000
3283 #define TIME_UNIT 1024
3286 * extended beacon time format
3287 * time in usec will be changed into a 32-bit value in 8:24 format
3288 * the high 1 byte is the beacon counts
3289 * the lower 3 bytes is the time in usec within one beacon interval
3292 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3296 u32 interval = beacon_interval * 1024;
3298 if (!interval || !usec)
3301 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3302 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3304 return (quot << 24) + rem;
3307 /* base is usually what we get from ucode with each received frame,
3308 * the same as HW timer counter counting down
3311 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3313 u32 base_low = base & BEACON_TIME_MASK_LOW;
3314 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3315 u32 interval = beacon_interval * TIME_UNIT;
3316 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3317 (addon & BEACON_TIME_MASK_HIGH);
3319 if (base_low > addon_low)
3320 res += base_low - addon_low;
3321 else if (base_low < addon_low) {
3322 res += interval + base_low - addon_low;
3327 return cpu_to_le32(res);
3330 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3331 struct ieee80211_measurement_params *params,
3334 struct iwl3945_spectrum_cmd spectrum;
3335 struct iwl3945_rx_packet *res;
3336 struct iwl3945_host_cmd cmd = {
3337 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3338 .data = (void *)&spectrum,
3339 .meta.flags = CMD_WANT_SKB,
3341 u32 add_time = le64_to_cpu(params->start_time);
3343 int spectrum_resp_status;
3344 int duration = le16_to_cpu(params->duration);
3346 if (iwl3945_is_associated(priv))
3348 iwl3945_usecs_to_beacons(
3349 le64_to_cpu(params->start_time) - priv->last_tsf,
3350 le16_to_cpu(priv->rxon_timing.beacon_interval));
3352 memset(&spectrum, 0, sizeof(spectrum));
3354 spectrum.channel_count = cpu_to_le16(1);
3356 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3357 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3358 cmd.len = sizeof(spectrum);
3359 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3361 if (iwl3945_is_associated(priv))
3362 spectrum.start_time =
3363 iwl3945_add_beacon_time(priv->last_beacon_time,
3365 le16_to_cpu(priv->rxon_timing.beacon_interval));
3367 spectrum.start_time = 0;
3369 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3370 spectrum.channels[0].channel = params->channel;
3371 spectrum.channels[0].type = type;
3372 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3373 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3374 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3376 rc = iwl3945_send_cmd_sync(priv, &cmd);
3380 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3381 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3382 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3386 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3387 switch (spectrum_resp_status) {
3388 case 0: /* Command will be handled */
3389 if (res->u.spectrum.id != 0xff) {
3390 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3391 res->u.spectrum.id);
3392 priv->measurement_status &= ~MEASUREMENT_READY;
3394 priv->measurement_status |= MEASUREMENT_ACTIVE;
3398 case 1: /* Command will not be handled */
3403 dev_kfree_skb_any(cmd.meta.u.skb);
3409 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3410 struct iwl3945_tx_info *tx_sta)
3413 tx_sta->status.ack_signal = 0;
3414 tx_sta->status.excessive_retries = 0;
3415 tx_sta->status.queue_length = 0;
3416 tx_sta->status.queue_number = 0;
3419 ieee80211_tx_status_irqsafe(priv->hw,
3420 tx_sta->skb[0], &(tx_sta->status));
3422 ieee80211_tx_status(priv->hw,
3423 tx_sta->skb[0], &(tx_sta->status));
3425 tx_sta->skb[0] = NULL;
3429 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3431 * When FW advances 'R' index, all entries between old and new 'R' index
3432 * need to be reclaimed. As result, some free space forms. If there is
3433 * enough free space (> low mark), wake the stack that feeds us.
3435 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3437 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3438 struct iwl3945_queue *q = &txq->q;
3441 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3442 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3443 "is out of range [0-%d] %d %d.\n", txq_id,
3444 index, q->n_bd, q->write_ptr, q->read_ptr);
3448 for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3449 q->read_ptr != index;
3450 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3451 if (txq_id != IWL_CMD_QUEUE_NUM) {
3452 iwl3945_txstatus_to_ieee(priv,
3453 &(txq->txb[txq->q.read_ptr]));
3454 iwl3945_hw_txq_free_tfd(priv, txq);
3455 } else if (nfreed > 1) {
3456 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3457 q->write_ptr, q->read_ptr);
3458 queue_work(priv->workqueue, &priv->restart);
3463 if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3464 (txq_id != IWL_CMD_QUEUE_NUM) &&
3465 priv->mac80211_registered)
3466 ieee80211_wake_queue(priv->hw, txq_id);
3472 static int iwl3945_is_tx_success(u32 status)
3474 return (status & 0xFF) == 0x1;
3477 /******************************************************************************
3479 * Generic RX handler implementations
3481 ******************************************************************************/
3483 * iwl3945_rx_reply_tx - Handle Tx response
3485 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3486 struct iwl3945_rx_mem_buffer *rxb)
3488 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3489 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3490 int txq_id = SEQ_TO_QUEUE(sequence);
3491 int index = SEQ_TO_INDEX(sequence);
3492 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3493 struct ieee80211_tx_status *tx_status;
3494 struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3495 u32 status = le32_to_cpu(tx_resp->status);
3497 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3498 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3499 "is out of range [0-%d] %d %d\n", txq_id,
3500 index, txq->q.n_bd, txq->q.write_ptr,
3505 tx_status = &(txq->txb[txq->q.read_ptr].status);
3507 tx_status->retry_count = tx_resp->failure_frame;
3508 tx_status->queue_number = status;
3509 tx_status->queue_length = tx_resp->bt_kill_count;
3510 tx_status->queue_length |= tx_resp->failure_rts;
3513 iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3515 tx_status->control.tx_rate = iwl3945_rate_index_from_plcp(tx_resp->rate);
3517 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3518 txq_id, iwl3945_get_tx_fail_reason(status), status,
3519 tx_resp->rate, tx_resp->failure_frame);
3521 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3523 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3525 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3526 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3530 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3531 struct iwl3945_rx_mem_buffer *rxb)
3533 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3534 struct iwl3945_alive_resp *palive;
3535 struct delayed_work *pwork;
3537 palive = &pkt->u.alive_frame;
3539 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3541 palive->is_valid, palive->ver_type,
3542 palive->ver_subtype);
3544 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3545 IWL_DEBUG_INFO("Initialization Alive received.\n");
3546 memcpy(&priv->card_alive_init,
3547 &pkt->u.alive_frame,
3548 sizeof(struct iwl3945_init_alive_resp));
3549 pwork = &priv->init_alive_start;
3551 IWL_DEBUG_INFO("Runtime Alive received.\n");
3552 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3553 sizeof(struct iwl3945_alive_resp));
3554 pwork = &priv->alive_start;
3555 iwl3945_disable_events(priv);
3558 /* We delay the ALIVE response by 5ms to
3559 * give the HW RF Kill time to activate... */
3560 if (palive->is_valid == UCODE_VALID_OK)
3561 queue_delayed_work(priv->workqueue, pwork,
3562 msecs_to_jiffies(5));
3564 IWL_WARNING("uCode did not respond OK.\n");
3567 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3568 struct iwl3945_rx_mem_buffer *rxb)
3570 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3572 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3576 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3577 struct iwl3945_rx_mem_buffer *rxb)
3579 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3581 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3582 "seq 0x%04X ser 0x%08X\n",
3583 le32_to_cpu(pkt->u.err_resp.error_type),
3584 get_cmd_string(pkt->u.err_resp.cmd_id),
3585 pkt->u.err_resp.cmd_id,
3586 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3587 le32_to_cpu(pkt->u.err_resp.error_info));
3590 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3592 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3594 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3595 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3596 struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3597 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3598 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3599 rxon->channel = csa->channel;
3600 priv->staging_rxon.channel = csa->channel;
3603 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3604 struct iwl3945_rx_mem_buffer *rxb)
3606 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3607 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3608 struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3610 if (!report->state) {
3611 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3612 "Spectrum Measure Notification: Start\n");
3616 memcpy(&priv->measure_report, report, sizeof(*report));
3617 priv->measurement_status |= MEASUREMENT_READY;
3621 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3622 struct iwl3945_rx_mem_buffer *rxb)
3624 #ifdef CONFIG_IWL3945_DEBUG
3625 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3626 struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3627 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3628 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3632 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3633 struct iwl3945_rx_mem_buffer *rxb)
3635 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3636 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3637 "notification for %s:\n",
3638 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3639 iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3642 static void iwl3945_bg_beacon_update(struct work_struct *work)
3644 struct iwl3945_priv *priv =
3645 container_of(work, struct iwl3945_priv, beacon_update);
3646 struct sk_buff *beacon;
3648 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3649 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3652 IWL_ERROR("update beacon failed\n");
3656 mutex_lock(&priv->mutex);
3657 /* new beacon skb is allocated every time; dispose previous.*/
3658 if (priv->ibss_beacon)
3659 dev_kfree_skb(priv->ibss_beacon);
3661 priv->ibss_beacon = beacon;
3662 mutex_unlock(&priv->mutex);
3664 iwl3945_send_beacon_cmd(priv);
3667 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3668 struct iwl3945_rx_mem_buffer *rxb)
3670 #ifdef CONFIG_IWL3945_DEBUG
3671 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3672 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3673 u8 rate = beacon->beacon_notify_hdr.rate;
3675 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3676 "tsf %d %d rate %d\n",
3677 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3678 beacon->beacon_notify_hdr.failure_frame,
3679 le32_to_cpu(beacon->ibss_mgr_status),
3680 le32_to_cpu(beacon->high_tsf),
3681 le32_to_cpu(beacon->low_tsf), rate);
3684 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3685 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3686 queue_work(priv->workqueue, &priv->beacon_update);
3689 /* Service response to REPLY_SCAN_CMD (0x80) */
3690 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3691 struct iwl3945_rx_mem_buffer *rxb)
3693 #ifdef CONFIG_IWL3945_DEBUG
3694 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3695 struct iwl3945_scanreq_notification *notif =
3696 (struct iwl3945_scanreq_notification *)pkt->u.raw;
3698 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3702 /* Service SCAN_START_NOTIFICATION (0x82) */
3703 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3704 struct iwl3945_rx_mem_buffer *rxb)
3706 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3707 struct iwl3945_scanstart_notification *notif =
3708 (struct iwl3945_scanstart_notification *)pkt->u.raw;
3709 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3710 IWL_DEBUG_SCAN("Scan start: "
3712 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3714 notif->band ? "bg" : "a",
3716 notif->tsf_low, notif->status, notif->beacon_timer);
3719 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3720 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3721 struct iwl3945_rx_mem_buffer *rxb)
3723 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3724 struct iwl3945_scanresults_notification *notif =
3725 (struct iwl3945_scanresults_notification *)pkt->u.raw;
3727 IWL_DEBUG_SCAN("Scan ch.res: "
3729 "(TSF: 0x%08X:%08X) - %d "
3730 "elapsed=%lu usec (%dms since last)\n",
3732 notif->band ? "bg" : "a",
3733 le32_to_cpu(notif->tsf_high),
3734 le32_to_cpu(notif->tsf_low),
3735 le32_to_cpu(notif->statistics[0]),
3736 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3737 jiffies_to_msecs(elapsed_jiffies
3738 (priv->last_scan_jiffies, jiffies)));
3740 priv->last_scan_jiffies = jiffies;
3741 priv->next_scan_jiffies = 0;
3744 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3745 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3746 struct iwl3945_rx_mem_buffer *rxb)
3748 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3749 struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3751 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3752 scan_notif->scanned_channels,
3753 scan_notif->tsf_low,
3754 scan_notif->tsf_high, scan_notif->status);
3756 /* The HW is no longer scanning */
3757 clear_bit(STATUS_SCAN_HW, &priv->status);
3759 /* The scan completion notification came in, so kill that timer... */
3760 cancel_delayed_work(&priv->scan_check);
3762 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3763 (priv->scan_bands == 2) ? "2.4" : "5.2",
3764 jiffies_to_msecs(elapsed_jiffies
3765 (priv->scan_pass_start, jiffies)));
3767 /* Remove this scanned band from the list
3768 * of pending bands to scan */
3771 /* If a request to abort was given, or the scan did not succeed
3772 * then we reset the scan state machine and terminate,
3773 * re-queuing another scan if one has been requested */
3774 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3775 IWL_DEBUG_INFO("Aborted scan completed.\n");
3776 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3778 /* If there are more bands on this scan pass reschedule */
3779 if (priv->scan_bands > 0)
3783 priv->last_scan_jiffies = jiffies;
3784 priv->next_scan_jiffies = 0;
3785 IWL_DEBUG_INFO("Setting scan to off\n");
3787 clear_bit(STATUS_SCANNING, &priv->status);
3789 IWL_DEBUG_INFO("Scan took %dms\n",
3790 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3792 queue_work(priv->workqueue, &priv->scan_completed);
3797 priv->scan_pass_start = jiffies;
3798 queue_work(priv->workqueue, &priv->request_scan);
3801 /* Handle notification from uCode that card's power state is changing
3802 * due to software, hardware, or critical temperature RFKILL */
3803 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3804 struct iwl3945_rx_mem_buffer *rxb)
3806 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3807 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3808 unsigned long status = priv->status;
3810 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3811 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3812 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3814 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3815 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3817 if (flags & HW_CARD_DISABLED)
3818 set_bit(STATUS_RF_KILL_HW, &priv->status);
3820 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3823 if (flags & SW_CARD_DISABLED)
3824 set_bit(STATUS_RF_KILL_SW, &priv->status);
3826 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3828 iwl3945_scan_cancel(priv);
3830 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3831 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3832 (test_bit(STATUS_RF_KILL_SW, &status) !=
3833 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3834 queue_work(priv->workqueue, &priv->rf_kill);
3836 wake_up_interruptible(&priv->wait_command_queue);
3840 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3842 * Setup the RX handlers for each of the reply types sent from the uCode
3845 * This function chains into the hardware specific files for them to setup
3846 * any hardware specific handlers as well.
3848 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3850 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3851 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3852 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3853 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3854 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3855 iwl3945_rx_spectrum_measure_notif;
3856 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3857 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3858 iwl3945_rx_pm_debug_statistics_notif;
3859 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3862 * The same handler is used for both the REPLY to a discrete
3863 * statistics request from the host as well as for the periodic
3864 * statistics notifications (after received beacons) from the uCode.
3866 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3867 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3869 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3870 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3871 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3872 iwl3945_rx_scan_results_notif;
3873 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3874 iwl3945_rx_scan_complete_notif;
3875 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3876 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3878 /* Set up hardware specific Rx handlers */
3879 iwl3945_hw_rx_handler_setup(priv);
3883 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3884 * @rxb: Rx buffer to reclaim
3886 * If an Rx buffer has an async callback associated with it the callback
3887 * will be executed. The attached skb (if present) will only be freed
3888 * if the callback returns 1
3890 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3891 struct iwl3945_rx_mem_buffer *rxb)
3893 struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3894 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3895 int txq_id = SEQ_TO_QUEUE(sequence);
3896 int index = SEQ_TO_INDEX(sequence);
3897 int huge = sequence & SEQ_HUGE_FRAME;
3899 struct iwl3945_cmd *cmd;
3901 /* If a Tx command is being handled and it isn't in the actual
3902 * command queue then there a command routing bug has been introduced
3903 * in the queue management code. */
3904 if (txq_id != IWL_CMD_QUEUE_NUM)
3905 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3906 txq_id, pkt->hdr.cmd);
3907 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3909 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3910 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3912 /* Input error checking is done when commands are added to queue. */
3913 if (cmd->meta.flags & CMD_WANT_SKB) {
3914 cmd->meta.source->u.skb = rxb->skb;
3916 } else if (cmd->meta.u.callback &&
3917 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3920 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3922 if (!(cmd->meta.flags & CMD_ASYNC)) {
3923 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3924 wake_up_interruptible(&priv->wait_command_queue);
3928 /************************** RX-FUNCTIONS ****************************/
3930 * Rx theory of operation
3932 * The host allocates 32 DMA target addresses and passes the host address
3933 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3937 * The host/firmware share two index registers for managing the Rx buffers.
3939 * The READ index maps to the first position that the firmware may be writing
3940 * to -- the driver can read up to (but not including) this position and get
3942 * The READ index is managed by the firmware once the card is enabled.
3944 * The WRITE index maps to the last position the driver has read from -- the
3945 * position preceding WRITE is the last slot the firmware can place a packet.
3947 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3950 * During initialization, the host sets up the READ queue position to the first
3951 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3953 * When the firmware places a packet in a buffer, it will advance the READ index
3954 * and fire the RX interrupt. The driver can then query the READ index and
3955 * process as many packets as possible, moving the WRITE index forward as it
3956 * resets the Rx queue buffers with new memory.
3958 * The management in the driver is as follows:
3959 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3960 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3961 * to replenish the iwl->rxq->rx_free.
3962 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3963 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3964 * 'processed' and 'read' driver indexes as well)
3965 * + A received packet is processed and handed to the kernel network stack,
3966 * detached from the iwl->rxq. The driver 'processed' index is updated.
3967 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3968 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3969 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3970 * were enough free buffers and RX_STALLED is set it is cleared.
3975 * iwl3945_rx_queue_alloc() Allocates rx_free
3976 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
3977 * iwl3945_rx_queue_restock
3978 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3979 * queue, updates firmware pointers, and updates
3980 * the WRITE index. If insufficient rx_free buffers
3981 * are available, schedules iwl3945_rx_replenish
3983 * -- enable interrupts --
3984 * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the
3985 * READ INDEX, detaching the SKB from the pool.
3986 * Moves the packet buffer from queue to rx_used.
3987 * Calls iwl3945_rx_queue_restock to refill any empty
3994 * iwl3945_rx_queue_space - Return number of free slots available in queue.
3996 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3998 int s = q->read - q->write;
4001 /* keep some buffer to not confuse full and empty queue */
4009 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4011 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
4015 unsigned long flags;
4017 spin_lock_irqsave(&q->lock, flags);
4019 if (q->need_update == 0)
4022 /* If power-saving is in use, make sure device is awake */
4023 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4024 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4026 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4027 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4028 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4032 rc = iwl3945_grab_nic_access(priv);
4036 /* Device expects a multiple of 8 */
4037 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4039 iwl3945_release_nic_access(priv);
4041 /* Else device is assumed to be awake */
4043 /* Device expects a multiple of 8 */
4044 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4050 spin_unlock_irqrestore(&q->lock, flags);
4055 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4057 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
4058 dma_addr_t dma_addr)
4060 return cpu_to_le32((u32)dma_addr);
4064 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
4066 * If there are slots in the RX queue that need to be restocked,
4067 * and we have free pre-allocated buffers, fill the ranks as much
4068 * as we can, pulling from rx_free.
4070 * This moves the 'write' index forward to catch up with 'processed', and
4071 * also updates the memory address in the firmware to reference the new
4074 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
4076 struct iwl3945_rx_queue *rxq = &priv->rxq;
4077 struct list_head *element;
4078 struct iwl3945_rx_mem_buffer *rxb;
4079 unsigned long flags;
4082 spin_lock_irqsave(&rxq->lock, flags);
4083 write = rxq->write & ~0x7;
4084 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4085 /* Get next free Rx buffer, remove from free list */
4086 element = rxq->rx_free.next;
4087 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4090 /* Point to Rx buffer via next RBD in circular buffer */
4091 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4092 rxq->queue[rxq->write] = rxb;
4093 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4096 spin_unlock_irqrestore(&rxq->lock, flags);
4097 /* If the pre-allocated buffer pool is dropping low, schedule to
4099 if (rxq->free_count <= RX_LOW_WATERMARK)
4100 queue_work(priv->workqueue, &priv->rx_replenish);
4103 /* If we've added more space for the firmware to place data, tell it.
4104 * Increment device's write pointer in multiples of 8. */
4105 if ((write != (rxq->write & ~0x7))
4106 || (abs(rxq->write - rxq->read) > 7)) {
4107 spin_lock_irqsave(&rxq->lock, flags);
4108 rxq->need_update = 1;
4109 spin_unlock_irqrestore(&rxq->lock, flags);
4110 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
4119 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
4121 * When moving to rx_free an SKB is allocated for the slot.
4123 * Also restock the Rx queue via iwl3945_rx_queue_restock.
4124 * This is called as a scheduled work item (except for during initialization)
4126 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
4128 struct iwl3945_rx_queue *rxq = &priv->rxq;
4129 struct list_head *element;
4130 struct iwl3945_rx_mem_buffer *rxb;
4131 unsigned long flags;
4132 spin_lock_irqsave(&rxq->lock, flags);
4133 while (!list_empty(&rxq->rx_used)) {
4134 element = rxq->rx_used.next;
4135 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4137 /* Alloc a new receive buffer */
4139 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4141 if (net_ratelimit())
4142 printk(KERN_CRIT DRV_NAME
4143 ": Can not allocate SKB buffers\n");
4144 /* We don't reschedule replenish work here -- we will
4145 * call the restock method and if it still needs
4146 * more buffers it will schedule replenish */
4149 priv->alloc_rxb_skb++;
4152 /* Get physical address of RB/SKB */
4154 pci_map_single(priv->pci_dev, rxb->skb->data,
4155 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4156 list_add_tail(&rxb->list, &rxq->rx_free);
4159 spin_unlock_irqrestore(&rxq->lock, flags);
4163 * this should be called while priv->lock is locked
4165 void __iwl3945_rx_replenish(void *data)
4167 struct iwl3945_priv *priv = data;
4169 iwl3945_rx_allocate(priv);
4170 iwl3945_rx_queue_restock(priv);
4174 void iwl3945_rx_replenish(void *data)
4176 struct iwl3945_priv *priv = data;
4177 unsigned long flags;
4179 iwl3945_rx_allocate(priv);
4181 spin_lock_irqsave(&priv->lock, flags);
4182 iwl3945_rx_queue_restock(priv);
4183 spin_unlock_irqrestore(&priv->lock, flags);
4186 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4187 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4188 * This free routine walks the list of POOL entries and if SKB is set to
4189 * non NULL it is unmapped and freed
4191 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4194 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4195 if (rxq->pool[i].skb != NULL) {
4196 pci_unmap_single(priv->pci_dev,
4197 rxq->pool[i].dma_addr,
4198 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4199 dev_kfree_skb(rxq->pool[i].skb);
4203 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4208 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
4210 struct iwl3945_rx_queue *rxq = &priv->rxq;
4211 struct pci_dev *dev = priv->pci_dev;
4214 spin_lock_init(&rxq->lock);
4215 INIT_LIST_HEAD(&rxq->rx_free);
4216 INIT_LIST_HEAD(&rxq->rx_used);
4218 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4219 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4223 /* Fill the rx_used queue with _all_ of the Rx buffers */
4224 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4225 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4227 /* Set us so that we have processed and used all buffers, but have
4228 * not restocked the Rx queue with fresh buffers */
4229 rxq->read = rxq->write = 0;
4230 rxq->free_count = 0;
4231 rxq->need_update = 0;
4235 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4237 unsigned long flags;
4239 spin_lock_irqsave(&rxq->lock, flags);
4240 INIT_LIST_HEAD(&rxq->rx_free);
4241 INIT_LIST_HEAD(&rxq->rx_used);
4242 /* Fill the rx_used queue with _all_ of the Rx buffers */
4243 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4244 /* In the reset function, these buffers may have been allocated
4245 * to an SKB, so we need to unmap and free potential storage */
4246 if (rxq->pool[i].skb != NULL) {
4247 pci_unmap_single(priv->pci_dev,
4248 rxq->pool[i].dma_addr,
4249 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4250 priv->alloc_rxb_skb--;
4251 dev_kfree_skb(rxq->pool[i].skb);
4252 rxq->pool[i].skb = NULL;
4254 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4257 /* Set us so that we have processed and used all buffers, but have
4258 * not restocked the Rx queue with fresh buffers */
4259 rxq->read = rxq->write = 0;
4260 rxq->free_count = 0;
4261 spin_unlock_irqrestore(&rxq->lock, flags);
4264 /* Convert linear signal-to-noise ratio into dB */
4265 static u8 ratio2dB[100] = {
4266 /* 0 1 2 3 4 5 6 7 8 9 */
4267 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4268 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4269 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4270 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4271 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4272 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4273 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4274 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4275 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4276 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4279 /* Calculates a relative dB value from a ratio of linear
4280 * (i.e. not dB) signal levels.
4281 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4282 int iwl3945_calc_db_from_ratio(int sig_ratio)
4284 /* Anything above 1000:1 just report as 60 dB */
4285 if (sig_ratio > 1000)
4288 /* Above 100:1, divide by 10 and use table,
4289 * add 20 dB to make up for divide by 10 */
4290 if (sig_ratio > 100)
4291 return (20 + (int)ratio2dB[sig_ratio/10]);
4293 /* We shouldn't see this */
4297 /* Use table for ratios 1:1 - 99:1 */
4298 return (int)ratio2dB[sig_ratio];
4301 #define PERFECT_RSSI (-20) /* dBm */
4302 #define WORST_RSSI (-95) /* dBm */
4303 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4305 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4306 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4307 * about formulas used below. */
4308 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4311 int degradation = PERFECT_RSSI - rssi_dbm;
4313 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4314 * as indicator; formula is (signal dbm - noise dbm).
4315 * SNR at or above 40 is a great signal (100%).
4316 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4317 * Weakest usable signal is usually 10 - 15 dB SNR. */
4319 if (rssi_dbm - noise_dbm >= 40)
4321 else if (rssi_dbm < noise_dbm)
4323 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4325 /* Else use just the signal level.
4326 * This formula is a least squares fit of data points collected and
4327 * compared with a reference system that had a percentage (%) display
4328 * for signal quality. */
4330 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4331 (15 * RSSI_RANGE + 62 * degradation)) /
4332 (RSSI_RANGE * RSSI_RANGE);
4336 else if (sig_qual < 1)
4343 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4345 * Uses the priv->rx_handlers callback function array to invoke
4346 * the appropriate handlers, including command responses,
4347 * frame-received notifications, and other notifications.
4349 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4351 struct iwl3945_rx_mem_buffer *rxb;
4352 struct iwl3945_rx_packet *pkt;
4353 struct iwl3945_rx_queue *rxq = &priv->rxq;
4356 unsigned long flags;
4360 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4361 * buffer that the driver may process (last buffer filled by ucode). */
4362 r = iwl3945_hw_get_rx_read(priv);
4365 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4367 /* Rx interrupt, but nothing sent from uCode */
4369 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4372 rxb = rxq->queue[i];
4374 /* If an RXB doesn't have a Rx queue slot associated with it,
4375 * then a bug has been introduced in the queue refilling
4376 * routines -- catch it here */
4377 BUG_ON(rxb == NULL);
4379 rxq->queue[i] = NULL;
4381 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4383 PCI_DMA_FROMDEVICE);
4384 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4386 /* Reclaim a command buffer only if this packet is a response
4387 * to a (driver-originated) command.
4388 * If the packet (e.g. Rx frame) originated from uCode,
4389 * there is no command buffer to reclaim.
4390 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4391 * but apparently a few don't get set; catch them here. */
4392 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4393 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4394 (pkt->hdr.cmd != REPLY_TX);
4396 /* Based on type of command response or notification,
4397 * handle those that need handling via function in
4398 * rx_handlers table. See iwl3945_setup_rx_handlers() */
4399 if (priv->rx_handlers[pkt->hdr.cmd]) {
4400 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4401 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4402 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4403 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4405 /* No handling needed */
4406 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4407 "r %d i %d No handler needed for %s, 0x%02x\n",
4408 r, i, get_cmd_string(pkt->hdr.cmd),
4413 /* Invoke any callbacks, transfer the skb to caller, and
4414 * fire off the (possibly) blocking iwl3945_send_cmd()
4415 * as we reclaim the driver command queue */
4416 if (rxb && rxb->skb)
4417 iwl3945_tx_cmd_complete(priv, rxb);
4419 IWL_WARNING("Claim null rxb?\n");
4422 /* For now we just don't re-use anything. We can tweak this
4423 * later to try and re-use notification packets and SKBs that
4424 * fail to Rx correctly */
4425 if (rxb->skb != NULL) {
4426 priv->alloc_rxb_skb--;
4427 dev_kfree_skb_any(rxb->skb);
4431 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4432 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4433 spin_lock_irqsave(&rxq->lock, flags);
4434 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4435 spin_unlock_irqrestore(&rxq->lock, flags);
4436 i = (i + 1) & RX_QUEUE_MASK;
4437 /* If there are a lot of unused frames,
4438 * restock the Rx queue so ucode won't assert. */
4443 __iwl3945_rx_replenish(priv);
4449 /* Backtrack one entry */
4451 iwl3945_rx_queue_restock(priv);
4455 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4457 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4458 struct iwl3945_tx_queue *txq)
4462 int txq_id = txq->q.id;
4464 if (txq->need_update == 0)
4467 /* if we're trying to save power */
4468 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4469 /* wake up nic if it's powered down ...
4470 * uCode will wake up, and interrupt us again, so next
4471 * time we'll skip this part. */
4472 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4474 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4475 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4476 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4477 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4481 /* restore this queue's parameters in nic hardware. */
4482 rc = iwl3945_grab_nic_access(priv);
4485 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4486 txq->q.write_ptr | (txq_id << 8));
4487 iwl3945_release_nic_access(priv);
4489 /* else not in power-save mode, uCode will never sleep when we're
4490 * trying to tx (during RFKILL, we're not trying to tx). */
4492 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4493 txq->q.write_ptr | (txq_id << 8));
4495 txq->need_update = 0;
4500 #ifdef CONFIG_IWL3945_DEBUG
4501 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4503 DECLARE_MAC_BUF(mac);
4505 IWL_DEBUG_RADIO("RX CONFIG:\n");
4506 iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4507 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4508 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4509 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4510 le32_to_cpu(rxon->filter_flags));
4511 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4512 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4513 rxon->ofdm_basic_rates);
4514 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4515 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4516 print_mac(mac, rxon->node_addr));
4517 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4518 print_mac(mac, rxon->bssid_addr));
4519 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4523 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4525 IWL_DEBUG_ISR("Enabling interrupts\n");
4526 set_bit(STATUS_INT_ENABLED, &priv->status);
4527 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4530 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4532 clear_bit(STATUS_INT_ENABLED, &priv->status);
4534 /* disable interrupts from uCode/NIC to host */
4535 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4537 /* acknowledge/clear/reset any interrupts still pending
4538 * from uCode or flow handler (Rx/Tx DMA) */
4539 iwl3945_write32(priv, CSR_INT, 0xffffffff);
4540 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4541 IWL_DEBUG_ISR("Disabled interrupts\n");
4544 static const char *desc_lookup(int i)
4552 return "BAD_CHECKSUM";
4554 return "NMI_INTERRUPT";
4558 return "FATAL_ERROR";
4564 #define ERROR_START_OFFSET (1 * sizeof(u32))
4565 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4567 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4570 u32 desc, time, count, base, data1;
4571 u32 blink1, blink2, ilink1, ilink2;
4574 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4576 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4577 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4581 rc = iwl3945_grab_nic_access(priv);
4583 IWL_WARNING("Can not read from adapter at this time.\n");
4587 count = iwl3945_read_targ_mem(priv, base);
4589 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4590 IWL_ERROR("Start IWL Error Log Dump:\n");
4591 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4592 priv->status, priv->config, count);
4595 IWL_ERROR("Desc Time asrtPC blink2 "
4596 "ilink1 nmiPC Line\n");
4597 for (i = ERROR_START_OFFSET;
4598 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4599 i += ERROR_ELEM_SIZE) {
4600 desc = iwl3945_read_targ_mem(priv, base + i);
4602 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4604 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4606 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4608 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4610 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4612 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4615 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4616 desc_lookup(desc), desc, time, blink1, blink2,
4617 ilink1, ilink2, data1);
4620 iwl3945_release_nic_access(priv);
4624 #define EVENT_START_OFFSET (6 * sizeof(u32))
4627 * iwl3945_print_event_log - Dump error event log to syslog
4629 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4631 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4632 u32 num_events, u32 mode)
4635 u32 base; /* SRAM byte address of event log header */
4636 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4637 u32 ptr; /* SRAM byte address of log data */
4638 u32 ev, time, data; /* event log data */
4640 if (num_events == 0)
4643 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4646 event_size = 2 * sizeof(u32);
4648 event_size = 3 * sizeof(u32);
4650 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4652 /* "time" is actually "data" for mode 0 (no timestamp).
4653 * place event id # at far right for easier visual parsing. */
4654 for (i = 0; i < num_events; i++) {
4655 ev = iwl3945_read_targ_mem(priv, ptr);
4657 time = iwl3945_read_targ_mem(priv, ptr);
4660 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4662 data = iwl3945_read_targ_mem(priv, ptr);
4664 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4669 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4672 u32 base; /* SRAM byte address of event log header */
4673 u32 capacity; /* event log capacity in # entries */
4674 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4675 u32 num_wraps; /* # times uCode wrapped to top of log */
4676 u32 next_entry; /* index of next entry to be written by uCode */
4677 u32 size; /* # entries that we'll print */
4679 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4680 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4681 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4685 rc = iwl3945_grab_nic_access(priv);
4687 IWL_WARNING("Can not read from adapter at this time.\n");
4691 /* event log header */
4692 capacity = iwl3945_read_targ_mem(priv, base);
4693 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4694 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4695 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4697 size = num_wraps ? capacity : next_entry;
4699 /* bail out if nothing in log */
4701 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4702 iwl3945_release_nic_access(priv);
4706 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4709 /* if uCode has wrapped back to top of log, start at the oldest entry,
4710 * i.e the next one that uCode would fill. */
4712 iwl3945_print_event_log(priv, next_entry,
4713 capacity - next_entry, mode);
4715 /* (then/else) start at top of log */
4716 iwl3945_print_event_log(priv, 0, next_entry, mode);
4718 iwl3945_release_nic_access(priv);
4722 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4724 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4726 /* Set the FW error flag -- cleared on iwl3945_down */
4727 set_bit(STATUS_FW_ERROR, &priv->status);
4729 /* Cancel currently queued command. */
4730 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4732 #ifdef CONFIG_IWL3945_DEBUG
4733 if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4734 iwl3945_dump_nic_error_log(priv);
4735 iwl3945_dump_nic_event_log(priv);
4736 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4740 wake_up_interruptible(&priv->wait_command_queue);
4742 /* Keep the restart process from trying to send host
4743 * commands by clearing the INIT status bit */
4744 clear_bit(STATUS_READY, &priv->status);
4746 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4747 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4748 "Restarting adapter due to uCode error.\n");
4750 if (iwl3945_is_associated(priv)) {
4751 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4752 sizeof(priv->recovery_rxon));
4753 priv->error_recovering = 1;
4755 queue_work(priv->workqueue, &priv->restart);
4759 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4761 unsigned long flags;
4763 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4764 sizeof(priv->staging_rxon));
4765 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4766 iwl3945_commit_rxon(priv);
4768 iwl3945_add_station(priv, priv->bssid, 1, 0);
4770 spin_lock_irqsave(&priv->lock, flags);
4771 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4772 priv->error_recovering = 0;
4773 spin_unlock_irqrestore(&priv->lock, flags);
4776 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4778 u32 inta, handled = 0;
4780 unsigned long flags;
4781 #ifdef CONFIG_IWL3945_DEBUG
4785 spin_lock_irqsave(&priv->lock, flags);
4787 /* Ack/clear/reset pending uCode interrupts.
4788 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4789 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4790 inta = iwl3945_read32(priv, CSR_INT);
4791 iwl3945_write32(priv, CSR_INT, inta);
4793 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4794 * Any new interrupts that happen after this, either while we're
4795 * in this tasklet, or later, will show up in next ISR/tasklet. */
4796 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4797 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4799 #ifdef CONFIG_IWL3945_DEBUG
4800 if (iwl3945_debug_level & IWL_DL_ISR) {
4801 /* just for debug */
4802 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4803 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4804 inta, inta_mask, inta_fh);
4808 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4809 * atomic, make sure that inta covers all the interrupts that
4810 * we've discovered, even if FH interrupt came in just after
4811 * reading CSR_INT. */
4812 if (inta_fh & CSR_FH_INT_RX_MASK)
4813 inta |= CSR_INT_BIT_FH_RX;
4814 if (inta_fh & CSR_FH_INT_TX_MASK)
4815 inta |= CSR_INT_BIT_FH_TX;
4817 /* Now service all interrupt bits discovered above. */
4818 if (inta & CSR_INT_BIT_HW_ERR) {
4819 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4821 /* Tell the device to stop sending interrupts */
4822 iwl3945_disable_interrupts(priv);
4824 iwl3945_irq_handle_error(priv);
4826 handled |= CSR_INT_BIT_HW_ERR;
4828 spin_unlock_irqrestore(&priv->lock, flags);
4833 #ifdef CONFIG_IWL3945_DEBUG
4834 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4835 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4836 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
4837 IWL_DEBUG_ISR("Microcode started or stopped.\n");
4839 /* Alive notification via Rx interrupt will do the real work */
4840 if (inta & CSR_INT_BIT_ALIVE)
4841 IWL_DEBUG_ISR("Alive interrupt\n");
4844 /* Safely ignore these bits for debug checks below */
4845 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
4847 /* HW RF KILL switch toggled (4965 only) */
4848 if (inta & CSR_INT_BIT_RF_KILL) {
4850 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4851 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4854 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4855 "RF_KILL bit toggled to %s.\n",
4856 hw_rf_kill ? "disable radio":"enable radio");
4858 /* Queue restart only if RF_KILL switch was set to "kill"
4859 * when we loaded driver, and is now set to "enable".
4860 * After we're Alive, RF_KILL gets handled by
4861 * iwl_rx_card_state_notif() */
4862 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4863 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4864 queue_work(priv->workqueue, &priv->restart);
4867 handled |= CSR_INT_BIT_RF_KILL;
4870 /* Chip got too hot and stopped itself (4965 only) */
4871 if (inta & CSR_INT_BIT_CT_KILL) {
4872 IWL_ERROR("Microcode CT kill error detected.\n");
4873 handled |= CSR_INT_BIT_CT_KILL;
4876 /* Error detected by uCode */
4877 if (inta & CSR_INT_BIT_SW_ERR) {
4878 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4880 iwl3945_irq_handle_error(priv);
4881 handled |= CSR_INT_BIT_SW_ERR;
4884 /* uCode wakes up after power-down sleep */
4885 if (inta & CSR_INT_BIT_WAKEUP) {
4886 IWL_DEBUG_ISR("Wakeup interrupt\n");
4887 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4888 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4889 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4890 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4891 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4892 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4893 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4895 handled |= CSR_INT_BIT_WAKEUP;
4898 /* All uCode command responses, including Tx command responses,
4899 * Rx "responses" (frame-received notification), and other
4900 * notifications from uCode come through here*/
4901 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4902 iwl3945_rx_handle(priv);
4903 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4906 if (inta & CSR_INT_BIT_FH_TX) {
4907 IWL_DEBUG_ISR("Tx interrupt\n");
4909 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4910 if (!iwl3945_grab_nic_access(priv)) {
4911 iwl3945_write_direct32(priv,
4913 (ALM_FH_SRVC_CHNL), 0x0);
4914 iwl3945_release_nic_access(priv);
4916 handled |= CSR_INT_BIT_FH_TX;
4919 if (inta & ~handled)
4920 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4922 if (inta & ~CSR_INI_SET_MASK) {
4923 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4924 inta & ~CSR_INI_SET_MASK);
4925 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4928 /* Re-enable all interrupts */
4929 iwl3945_enable_interrupts(priv);
4931 #ifdef CONFIG_IWL3945_DEBUG
4932 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4933 inta = iwl3945_read32(priv, CSR_INT);
4934 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4935 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4936 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4937 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4940 spin_unlock_irqrestore(&priv->lock, flags);
4943 static irqreturn_t iwl3945_isr(int irq, void *data)
4945 struct iwl3945_priv *priv = data;
4946 u32 inta, inta_mask;
4951 spin_lock(&priv->lock);
4953 /* Disable (but don't clear!) interrupts here to avoid
4954 * back-to-back ISRs and sporadic interrupts from our NIC.
4955 * If we have something to service, the tasklet will re-enable ints.
4956 * If we *don't* have something, we'll re-enable before leaving here. */
4957 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4958 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4960 /* Discover which interrupts are active/pending */
4961 inta = iwl3945_read32(priv, CSR_INT);
4962 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4964 /* Ignore interrupt if there's nothing in NIC to service.
4965 * This may be due to IRQ shared with another device,
4966 * or due to sporadic interrupts thrown from our NIC. */
4967 if (!inta && !inta_fh) {
4968 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4972 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4973 /* Hardware disappeared */
4974 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4978 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4979 inta, inta_mask, inta_fh);
4981 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4982 tasklet_schedule(&priv->irq_tasklet);
4984 spin_unlock(&priv->lock);
4989 /* re-enable interrupts here since we don't have anything to service. */
4990 iwl3945_enable_interrupts(priv);
4991 spin_unlock(&priv->lock);
4995 /************************** EEPROM BANDS ****************************
4997 * The iwl3945_eeprom_band definitions below provide the mapping from the
4998 * EEPROM contents to the specific channel number supported for each
5001 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
5002 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5003 * The specific geography and calibration information for that channel
5004 * is contained in the eeprom map itself.
5006 * During init, we copy the eeprom information and channel map
5007 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5009 * channel_map_24/52 provides the index in the channel_info array for a
5010 * given channel. We have to have two separate maps as there is channel
5011 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5014 * A value of 0xff stored in the channel_map indicates that the channel
5015 * is not supported by the hardware at all.
5017 * A value of 0xfe in the channel_map indicates that the channel is not
5018 * valid for Tx with the current hardware. This means that
5019 * while the system can tune and receive on a given channel, it may not
5020 * be able to associate or transmit any frames on that
5021 * channel. There is no corresponding channel information for that
5024 *********************************************************************/
5027 static const u8 iwl3945_eeprom_band_1[14] = {
5028 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5032 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
5033 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5036 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
5037 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5040 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
5041 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5044 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
5045 145, 149, 153, 157, 161, 165
5048 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
5049 int *eeprom_ch_count,
5050 const struct iwl3945_eeprom_channel
5052 const u8 **eeprom_ch_index)
5055 case 1: /* 2.4GHz band */
5056 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
5057 *eeprom_ch_info = priv->eeprom.band_1_channels;
5058 *eeprom_ch_index = iwl3945_eeprom_band_1;
5060 case 2: /* 4.9GHz band */
5061 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
5062 *eeprom_ch_info = priv->eeprom.band_2_channels;
5063 *eeprom_ch_index = iwl3945_eeprom_band_2;
5065 case 3: /* 5.2GHz band */
5066 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
5067 *eeprom_ch_info = priv->eeprom.band_3_channels;
5068 *eeprom_ch_index = iwl3945_eeprom_band_3;
5070 case 4: /* 5.5GHz band */
5071 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
5072 *eeprom_ch_info = priv->eeprom.band_4_channels;
5073 *eeprom_ch_index = iwl3945_eeprom_band_4;
5075 case 5: /* 5.7GHz band */
5076 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
5077 *eeprom_ch_info = priv->eeprom.band_5_channels;
5078 *eeprom_ch_index = iwl3945_eeprom_band_5;
5087 * iwl3945_get_channel_info - Find driver's private channel info
5089 * Based on band and channel number.
5091 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
5092 int phymode, u16 channel)
5097 case MODE_IEEE80211A:
5098 for (i = 14; i < priv->channel_count; i++) {
5099 if (priv->channel_info[i].channel == channel)
5100 return &priv->channel_info[i];
5104 case MODE_IEEE80211B:
5105 case MODE_IEEE80211G:
5106 if (channel >= 1 && channel <= 14)
5107 return &priv->channel_info[channel - 1];
5115 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5119 * iwl3945_init_channel_map - Set up driver's info for all possible channels
5121 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
5123 int eeprom_ch_count = 0;
5124 const u8 *eeprom_ch_index = NULL;
5125 const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
5127 struct iwl3945_channel_info *ch_info;
5129 if (priv->channel_count) {
5130 IWL_DEBUG_INFO("Channel map already initialized.\n");
5134 if (priv->eeprom.version < 0x2f) {
5135 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5136 priv->eeprom.version);
5140 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5142 priv->channel_count =
5143 ARRAY_SIZE(iwl3945_eeprom_band_1) +
5144 ARRAY_SIZE(iwl3945_eeprom_band_2) +
5145 ARRAY_SIZE(iwl3945_eeprom_band_3) +
5146 ARRAY_SIZE(iwl3945_eeprom_band_4) +
5147 ARRAY_SIZE(iwl3945_eeprom_band_5);
5149 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5151 priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
5152 priv->channel_count, GFP_KERNEL);
5153 if (!priv->channel_info) {
5154 IWL_ERROR("Could not allocate channel_info\n");
5155 priv->channel_count = 0;
5159 ch_info = priv->channel_info;
5161 /* Loop through the 5 EEPROM bands adding them in order to the
5162 * channel map we maintain (that contains additional information than
5163 * what just in the EEPROM) */
5164 for (band = 1; band <= 5; band++) {
5166 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
5167 &eeprom_ch_info, &eeprom_ch_index);
5169 /* Loop through each band adding each of the channels */
5170 for (ch = 0; ch < eeprom_ch_count; ch++) {
5171 ch_info->channel = eeprom_ch_index[ch];
5172 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5175 /* permanently store EEPROM's channel regulatory flags
5176 * and max power in channel info database. */
5177 ch_info->eeprom = eeprom_ch_info[ch];
5179 /* Copy the run-time flags so they are there even on
5180 * invalid channels */
5181 ch_info->flags = eeprom_ch_info[ch].flags;
5183 if (!(is_channel_valid(ch_info))) {
5184 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5188 is_channel_a_band(ch_info) ?
5194 /* Initialize regulatory-based run-time data */
5195 ch_info->max_power_avg = ch_info->curr_txpow =
5196 eeprom_ch_info[ch].max_power_avg;
5197 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5198 ch_info->min_power = 0;
5200 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5201 " %ddBm): Ad-Hoc %ssupported\n",
5203 is_channel_a_band(ch_info) ?
5205 CHECK_AND_PRINT(IBSS),
5206 CHECK_AND_PRINT(ACTIVE),
5207 CHECK_AND_PRINT(RADAR),
5208 CHECK_AND_PRINT(WIDE),
5209 CHECK_AND_PRINT(NARROW),
5210 CHECK_AND_PRINT(DFS),
5211 eeprom_ch_info[ch].flags,
5212 eeprom_ch_info[ch].max_power_avg,
5213 ((eeprom_ch_info[ch].
5214 flags & EEPROM_CHANNEL_IBSS)
5215 && !(eeprom_ch_info[ch].
5216 flags & EEPROM_CHANNEL_RADAR))
5219 /* Set the user_txpower_limit to the highest power
5220 * supported by any channel */
5221 if (eeprom_ch_info[ch].max_power_avg >
5222 priv->user_txpower_limit)
5223 priv->user_txpower_limit =
5224 eeprom_ch_info[ch].max_power_avg;
5230 /* Set up txpower settings in driver for all channels */
5231 if (iwl3945_txpower_set_from_eeprom(priv))
5237 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5238 * sending probe req. This should be set long enough to hear probe responses
5239 * from more than one AP. */
5240 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5241 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5243 /* For faster active scanning, scan will move to the next channel if fewer than
5244 * PLCP_QUIET_THRESH packets are heard on this channel within
5245 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5246 * time if it's a quiet channel (nothing responded to our probe, and there's
5247 * no other traffic).
5248 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5249 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5250 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5252 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5253 * Must be set longer than active dwell time.
5254 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5255 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5256 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5257 #define IWL_PASSIVE_DWELL_BASE (100)
5258 #define IWL_CHANNEL_TUNE_TIME 5
5260 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv, int phymode)
5262 if (phymode == MODE_IEEE80211A)
5263 return IWL_ACTIVE_DWELL_TIME_52;
5265 return IWL_ACTIVE_DWELL_TIME_24;
5268 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv, int phymode)
5270 u16 active = iwl3945_get_active_dwell_time(priv, phymode);
5271 u16 passive = (phymode != MODE_IEEE80211A) ?
5272 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5273 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5275 if (iwl3945_is_associated(priv)) {
5276 /* If we're associated, we clamp the maximum passive
5277 * dwell time to be 98% of the beacon interval (minus
5278 * 2 * channel tune time) */
5279 passive = priv->beacon_int;
5280 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5281 passive = IWL_PASSIVE_DWELL_BASE;
5282 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5285 if (passive <= active)
5286 passive = active + 1;
5291 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode,
5292 u8 is_active, u8 direct_mask,
5293 struct iwl3945_scan_channel *scan_ch)
5295 const struct ieee80211_channel *channels = NULL;
5296 const struct ieee80211_hw_mode *hw_mode;
5297 const struct iwl3945_channel_info *ch_info;
5298 u16 passive_dwell = 0;
5299 u16 active_dwell = 0;
5302 hw_mode = iwl3945_get_hw_mode(priv, phymode);
5306 channels = hw_mode->channels;
5308 active_dwell = iwl3945_get_active_dwell_time(priv, phymode);
5309 passive_dwell = iwl3945_get_passive_dwell_time(priv, phymode);
5311 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5312 if (channels[i].chan ==
5313 le16_to_cpu(priv->active_rxon.channel)) {
5314 if (iwl3945_is_associated(priv)) {
5316 ("Skipping current channel %d\n",
5317 le16_to_cpu(priv->active_rxon.channel));
5320 } else if (priv->only_active_channel)
5323 scan_ch->channel = channels[i].chan;
5325 ch_info = iwl3945_get_channel_info(priv, phymode, scan_ch->channel);
5326 if (!is_channel_valid(ch_info)) {
5327 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5332 if (!is_active || is_channel_passive(ch_info) ||
5333 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5334 scan_ch->type = 0; /* passive */
5336 scan_ch->type = 1; /* active */
5338 if (scan_ch->type & 1)
5339 scan_ch->type |= (direct_mask << 1);
5341 if (is_channel_narrow(ch_info))
5342 scan_ch->type |= (1 << 7);
5344 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5345 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5347 /* Set txpower levels to defaults */
5348 scan_ch->tpc.dsp_atten = 110;
5349 /* scan_pwr_info->tpc.dsp_atten; */
5351 /*scan_pwr_info->tpc.tx_gain; */
5352 if (phymode == MODE_IEEE80211A)
5353 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5355 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5356 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5358 * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5362 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5364 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5365 (scan_ch->type & 1) ?
5366 active_dwell : passive_dwell);
5372 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5376 static void iwl3945_reset_channel_flag(struct iwl3945_priv *priv)
5379 for (i = 0; i < 3; i++) {
5380 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5381 for (j = 0; j < hw_mode->num_channels; j++)
5382 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5386 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5387 struct ieee80211_rate *rates)
5391 for (i = 0; i < IWL_RATE_COUNT; i++) {
5392 rates[i].rate = iwl3945_rates[i].ieee * 5;
5393 rates[i].val = i; /* Rate scaling will work on indexes */
5395 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5396 /* Only OFDM have the bits-per-symbol set */
5397 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5398 rates[i].flags |= IEEE80211_RATE_OFDM;
5401 * If CCK 1M then set rate flag to CCK else CCK_2
5402 * which is CCK | PREAMBLE2
5404 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5405 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5408 /* Set up which ones are basic rates... */
5409 if (IWL_BASIC_RATES_MASK & (1 << i))
5410 rates[i].flags |= IEEE80211_RATE_BASIC;
5415 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5417 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5419 struct iwl3945_channel_info *ch;
5420 struct ieee80211_hw_mode *modes;
5421 struct ieee80211_channel *channels;
5422 struct ieee80211_channel *geo_ch;
5423 struct ieee80211_rate *rates;
5433 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5434 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5438 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5443 channels = kzalloc(sizeof(struct ieee80211_channel) *
5444 priv->channel_count, GFP_KERNEL);
5450 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5463 /* 5.2GHz channels start after the 2.4GHz channels */
5464 modes[A].mode = MODE_IEEE80211A;
5465 modes[A].channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5466 modes[A].rates = &rates[4];
5467 modes[A].num_rates = 8; /* just OFDM */
5468 modes[A].num_channels = 0;
5470 modes[B].mode = MODE_IEEE80211B;
5471 modes[B].channels = channels;
5472 modes[B].rates = rates;
5473 modes[B].num_rates = 4; /* just CCK */
5474 modes[B].num_channels = 0;
5476 modes[G].mode = MODE_IEEE80211G;
5477 modes[G].channels = channels;
5478 modes[G].rates = rates;
5479 modes[G].num_rates = 12; /* OFDM & CCK */
5480 modes[G].num_channels = 0;
5482 priv->ieee_channels = channels;
5483 priv->ieee_rates = rates;
5485 iwl3945_init_hw_rates(priv, rates);
5487 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5488 ch = &priv->channel_info[i];
5490 if (!is_channel_valid(ch)) {
5491 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5493 ch->channel, is_channel_a_band(ch) ?
5498 if (is_channel_a_band(ch))
5499 geo_ch = &modes[A].channels[modes[A].num_channels++];
5501 geo_ch = &modes[B].channels[modes[B].num_channels++];
5502 modes[G].num_channels++;
5505 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5506 geo_ch->chan = ch->channel;
5507 geo_ch->power_level = ch->max_power_avg;
5508 geo_ch->antenna_max = 0xff;
5510 if (is_channel_valid(ch)) {
5511 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5512 if (ch->flags & EEPROM_CHANNEL_IBSS)
5513 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5515 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5516 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5518 if (ch->flags & EEPROM_CHANNEL_RADAR)
5519 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5521 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5522 priv->max_channel_txpower_limit =
5526 geo_ch->val = geo_ch->flag;
5529 if ((modes[A].num_channels == 0) && priv->is_abg) {
5530 printk(KERN_INFO DRV_NAME
5531 ": Incorrectly detected BG card as ABG. Please send "
5532 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5533 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5537 printk(KERN_INFO DRV_NAME
5538 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5539 modes[G].num_channels, modes[A].num_channels);
5542 * NOTE: We register these in preference of order -- the
5543 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5544 * a phymode based on rates or AP capabilities but seems to
5545 * configure it purely on if the channel being configured
5546 * is supported by a mode -- and the first match is taken
5549 if (modes[G].num_channels)
5550 ieee80211_register_hwmode(priv->hw, &modes[G]);
5551 if (modes[B].num_channels)
5552 ieee80211_register_hwmode(priv->hw, &modes[B]);
5553 if (modes[A].num_channels)
5554 ieee80211_register_hwmode(priv->hw, &modes[A]);
5556 priv->modes = modes;
5557 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5562 /******************************************************************************
5564 * uCode download functions
5566 ******************************************************************************/
5568 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5570 if (priv->ucode_code.v_addr != NULL) {
5571 pci_free_consistent(priv->pci_dev,
5572 priv->ucode_code.len,
5573 priv->ucode_code.v_addr,
5574 priv->ucode_code.p_addr);
5575 priv->ucode_code.v_addr = NULL;
5577 if (priv->ucode_data.v_addr != NULL) {
5578 pci_free_consistent(priv->pci_dev,
5579 priv->ucode_data.len,
5580 priv->ucode_data.v_addr,
5581 priv->ucode_data.p_addr);
5582 priv->ucode_data.v_addr = NULL;
5584 if (priv->ucode_data_backup.v_addr != NULL) {
5585 pci_free_consistent(priv->pci_dev,
5586 priv->ucode_data_backup.len,
5587 priv->ucode_data_backup.v_addr,
5588 priv->ucode_data_backup.p_addr);
5589 priv->ucode_data_backup.v_addr = NULL;
5591 if (priv->ucode_init.v_addr != NULL) {
5592 pci_free_consistent(priv->pci_dev,
5593 priv->ucode_init.len,
5594 priv->ucode_init.v_addr,
5595 priv->ucode_init.p_addr);
5596 priv->ucode_init.v_addr = NULL;
5598 if (priv->ucode_init_data.v_addr != NULL) {
5599 pci_free_consistent(priv->pci_dev,
5600 priv->ucode_init_data.len,
5601 priv->ucode_init_data.v_addr,
5602 priv->ucode_init_data.p_addr);
5603 priv->ucode_init_data.v_addr = NULL;
5605 if (priv->ucode_boot.v_addr != NULL) {
5606 pci_free_consistent(priv->pci_dev,
5607 priv->ucode_boot.len,
5608 priv->ucode_boot.v_addr,
5609 priv->ucode_boot.p_addr);
5610 priv->ucode_boot.v_addr = NULL;
5615 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5616 * looking at all data.
5618 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5625 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5627 rc = iwl3945_grab_nic_access(priv);
5631 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5634 for (; len > 0; len -= sizeof(u32), image++) {
5635 /* read data comes through single port, auto-incr addr */
5636 /* NOTE: Use the debugless read so we don't flood kernel log
5637 * if IWL_DL_IO is set */
5638 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5639 if (val != le32_to_cpu(*image)) {
5640 IWL_ERROR("uCode INST section is invalid at "
5641 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5642 save_len - len, val, le32_to_cpu(*image));
5650 iwl3945_release_nic_access(priv);
5653 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5660 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5661 * using sample data 100 bytes apart. If these sample points are good,
5662 * it's a pretty good bet that everything between them is good, too.
5664 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5671 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5673 rc = iwl3945_grab_nic_access(priv);
5677 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5678 /* read data comes through single port, auto-incr addr */
5679 /* NOTE: Use the debugless read so we don't flood kernel log
5680 * if IWL_DL_IO is set */
5681 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5682 i + RTC_INST_LOWER_BOUND);
5683 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5684 if (val != le32_to_cpu(*image)) {
5685 #if 0 /* Enable this if you want to see details */
5686 IWL_ERROR("uCode INST section is invalid at "
5687 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5697 iwl3945_release_nic_access(priv);
5704 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5705 * and verify its contents
5707 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5714 image = (__le32 *)priv->ucode_boot.v_addr;
5715 len = priv->ucode_boot.len;
5716 rc = iwl3945_verify_inst_sparse(priv, image, len);
5718 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5722 /* Try initialize */
5723 image = (__le32 *)priv->ucode_init.v_addr;
5724 len = priv->ucode_init.len;
5725 rc = iwl3945_verify_inst_sparse(priv, image, len);
5727 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5731 /* Try runtime/protocol */
5732 image = (__le32 *)priv->ucode_code.v_addr;
5733 len = priv->ucode_code.len;
5734 rc = iwl3945_verify_inst_sparse(priv, image, len);
5736 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5740 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5742 /* Since nothing seems to match, show first several data entries in
5743 * instruction SRAM, so maybe visual inspection will give a clue.
5744 * Selection of bootstrap image (vs. other images) is arbitrary. */
5745 image = (__le32 *)priv->ucode_boot.v_addr;
5746 len = priv->ucode_boot.len;
5747 rc = iwl3945_verify_inst_full(priv, image, len);
5753 /* check contents of special bootstrap uCode SRAM */
5754 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5756 __le32 *image = priv->ucode_boot.v_addr;
5757 u32 len = priv->ucode_boot.len;
5761 IWL_DEBUG_INFO("Begin verify bsm\n");
5763 /* verify BSM SRAM contents */
5764 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5765 for (reg = BSM_SRAM_LOWER_BOUND;
5766 reg < BSM_SRAM_LOWER_BOUND + len;
5767 reg += sizeof(u32), image ++) {
5768 val = iwl3945_read_prph(priv, reg);
5769 if (val != le32_to_cpu(*image)) {
5770 IWL_ERROR("BSM uCode verification failed at "
5771 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5772 BSM_SRAM_LOWER_BOUND,
5773 reg - BSM_SRAM_LOWER_BOUND, len,
5774 val, le32_to_cpu(*image));
5779 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5785 * iwl3945_load_bsm - Load bootstrap instructions
5789 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5790 * in special SRAM that does not power down during RFKILL. When powering back
5791 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5792 * the bootstrap program into the on-board processor, and starts it.
5794 * The bootstrap program loads (via DMA) instructions and data for a new
5795 * program from host DRAM locations indicated by the host driver in the
5796 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5799 * When initializing the NIC, the host driver points the BSM to the
5800 * "initialize" uCode image. This uCode sets up some internal data, then
5801 * notifies host via "initialize alive" that it is complete.
5803 * The host then replaces the BSM_DRAM_* pointer values to point to the
5804 * normal runtime uCode instructions and a backup uCode data cache buffer
5805 * (filled initially with starting data values for the on-board processor),
5806 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5807 * which begins normal operation.
5809 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5810 * the backup data cache in DRAM before SRAM is powered down.
5812 * When powering back up, the BSM loads the bootstrap program. This reloads
5813 * the runtime uCode instructions and the backup data cache into SRAM,
5814 * and re-launches the runtime uCode from where it left off.
5816 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5818 __le32 *image = priv->ucode_boot.v_addr;
5819 u32 len = priv->ucode_boot.len;
5829 IWL_DEBUG_INFO("Begin load bsm\n");
5831 /* make sure bootstrap program is no larger than BSM's SRAM size */
5832 if (len > IWL_MAX_BSM_SIZE)
5835 /* Tell bootstrap uCode where to find the "Initialize" uCode
5836 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5837 * NOTE: iwl3945_initialize_alive_start() will replace these values,
5838 * after the "initialize" uCode has run, to point to
5839 * runtime/protocol instructions and backup data cache. */
5840 pinst = priv->ucode_init.p_addr;
5841 pdata = priv->ucode_init_data.p_addr;
5842 inst_len = priv->ucode_init.len;
5843 data_len = priv->ucode_init_data.len;
5845 rc = iwl3945_grab_nic_access(priv);
5849 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5850 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5851 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5852 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5854 /* Fill BSM memory with bootstrap instructions */
5855 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5856 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5857 reg_offset += sizeof(u32), image++)
5858 _iwl3945_write_prph(priv, reg_offset,
5859 le32_to_cpu(*image));
5861 rc = iwl3945_verify_bsm(priv);
5863 iwl3945_release_nic_access(priv);
5867 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5868 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5869 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5870 RTC_INST_LOWER_BOUND);
5871 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5873 /* Load bootstrap code into instruction SRAM now,
5874 * to prepare to load "initialize" uCode */
5875 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5876 BSM_WR_CTRL_REG_BIT_START);
5878 /* Wait for load of bootstrap uCode to finish */
5879 for (i = 0; i < 100; i++) {
5880 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5881 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5886 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5888 IWL_ERROR("BSM write did not complete!\n");
5892 /* Enable future boot loads whenever power management unit triggers it
5893 * (e.g. when powering back up after power-save shutdown) */
5894 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5895 BSM_WR_CTRL_REG_BIT_START_EN);
5897 iwl3945_release_nic_access(priv);
5902 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5904 /* Remove all resets to allow NIC to operate */
5905 iwl3945_write32(priv, CSR_RESET, 0);
5908 static int iwl3945_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
5910 desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
5911 return (desc->v_addr != NULL) ? 0 : -ENOMEM;
5915 * iwl3945_read_ucode - Read uCode images from disk file.
5917 * Copy into buffers for card to fetch via bus-mastering
5919 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5921 struct iwl3945_ucode *ucode;
5923 const struct firmware *ucode_raw;
5924 /* firmware file name contains uCode/driver compatibility version */
5925 const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5928 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5930 /* Ask kernel firmware_class module to get the boot firmware off disk.
5931 * request_firmware() is synchronous, file is in memory on return. */
5932 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5934 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5939 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5940 name, ucode_raw->size);
5942 /* Make sure that we got at least our header! */
5943 if (ucode_raw->size < sizeof(*ucode)) {
5944 IWL_ERROR("File size way too small!\n");
5949 /* Data from ucode file: header followed by uCode images */
5950 ucode = (void *)ucode_raw->data;
5952 ver = le32_to_cpu(ucode->ver);
5953 inst_size = le32_to_cpu(ucode->inst_size);
5954 data_size = le32_to_cpu(ucode->data_size);
5955 init_size = le32_to_cpu(ucode->init_size);
5956 init_data_size = le32_to_cpu(ucode->init_data_size);
5957 boot_size = le32_to_cpu(ucode->boot_size);
5959 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5960 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5961 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5962 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5963 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5964 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5966 /* Verify size of file vs. image size info in file's header */
5967 if (ucode_raw->size < sizeof(*ucode) +
5968 inst_size + data_size + init_size +
5969 init_data_size + boot_size) {
5971 IWL_DEBUG_INFO("uCode file size %d too small\n",
5972 (int)ucode_raw->size);
5977 /* Verify that uCode images will fit in card's SRAM */
5978 if (inst_size > IWL_MAX_INST_SIZE) {
5979 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5985 if (data_size > IWL_MAX_DATA_SIZE) {
5986 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5991 if (init_size > IWL_MAX_INST_SIZE) {
5992 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5997 if (init_data_size > IWL_MAX_DATA_SIZE) {
5998 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
6003 if (boot_size > IWL_MAX_BSM_SIZE) {
6004 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
6010 /* Allocate ucode buffers for card's bus-master loading ... */
6012 /* Runtime instructions and 2 copies of data:
6013 * 1) unmodified from disk
6014 * 2) backup cache for save/restore during power-downs */
6015 priv->ucode_code.len = inst_size;
6016 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6018 priv->ucode_data.len = data_size;
6019 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6021 priv->ucode_data_backup.len = data_size;
6022 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6024 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6025 !priv->ucode_data_backup.v_addr)
6028 /* Initialization instructions and data */
6029 if (init_size && init_data_size) {
6030 priv->ucode_init.len = init_size;
6031 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6033 priv->ucode_init_data.len = init_data_size;
6034 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6036 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6040 /* Bootstrap (instructions only, no data) */
6042 priv->ucode_boot.len = boot_size;
6043 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6045 if (!priv->ucode_boot.v_addr)
6049 /* Copy images into buffers for card's bus-master reads ... */
6051 /* Runtime instructions (first block of data in file) */
6052 src = &ucode->data[0];
6053 len = priv->ucode_code.len;
6054 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6055 memcpy(priv->ucode_code.v_addr, src, len);
6056 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6057 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6059 /* Runtime data (2nd block)
6060 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
6061 src = &ucode->data[inst_size];
6062 len = priv->ucode_data.len;
6063 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6064 memcpy(priv->ucode_data.v_addr, src, len);
6065 memcpy(priv->ucode_data_backup.v_addr, src, len);
6067 /* Initialization instructions (3rd block) */
6069 src = &ucode->data[inst_size + data_size];
6070 len = priv->ucode_init.len;
6071 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6073 memcpy(priv->ucode_init.v_addr, src, len);
6076 /* Initialization data (4th block) */
6077 if (init_data_size) {
6078 src = &ucode->data[inst_size + data_size + init_size];
6079 len = priv->ucode_init_data.len;
6080 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6082 memcpy(priv->ucode_init_data.v_addr, src, len);
6085 /* Bootstrap instructions (5th block) */
6086 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6087 len = priv->ucode_boot.len;
6088 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6090 memcpy(priv->ucode_boot.v_addr, src, len);
6092 /* We have our copies now, allow OS release its copies */
6093 release_firmware(ucode_raw);
6097 IWL_ERROR("failed to allocate pci memory\n");
6099 iwl3945_dealloc_ucode_pci(priv);
6102 release_firmware(ucode_raw);
6110 * iwl3945_set_ucode_ptrs - Set uCode address location
6112 * Tell initialization uCode where to find runtime uCode.
6114 * BSM registers initially contain pointers to initialization uCode.
6115 * We need to replace them to load runtime uCode inst and data,
6116 * and to save runtime data when powering down.
6118 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
6123 unsigned long flags;
6125 /* bits 31:0 for 3945 */
6126 pinst = priv->ucode_code.p_addr;
6127 pdata = priv->ucode_data_backup.p_addr;
6129 spin_lock_irqsave(&priv->lock, flags);
6130 rc = iwl3945_grab_nic_access(priv);
6132 spin_unlock_irqrestore(&priv->lock, flags);
6136 /* Tell bootstrap uCode where to find image to load */
6137 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6138 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6139 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6140 priv->ucode_data.len);
6142 /* Inst bytecount must be last to set up, bit 31 signals uCode
6143 * that all new ptr/size info is in place */
6144 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6145 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6147 iwl3945_release_nic_access(priv);
6149 spin_unlock_irqrestore(&priv->lock, flags);
6151 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6157 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
6159 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6161 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6163 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
6165 /* Check alive response for "valid" sign from uCode */
6166 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6167 /* We had an error bringing up the hardware, so take it
6168 * all the way back down so we can try again */
6169 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6173 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6174 * This is a paranoid check, because we would not have gotten the
6175 * "initialize" alive if code weren't properly loaded. */
6176 if (iwl3945_verify_ucode(priv)) {
6177 /* Runtime instruction load was bad;
6178 * take it all the way back down so we can try again */
6179 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6183 /* Send pointers to protocol/runtime uCode image ... init code will
6184 * load and launch runtime uCode, which will send us another "Alive"
6186 IWL_DEBUG_INFO("Initialization Alive received.\n");
6187 if (iwl3945_set_ucode_ptrs(priv)) {
6188 /* Runtime instruction load won't happen;
6189 * take it all the way back down so we can try again */
6190 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6196 queue_work(priv->workqueue, &priv->restart);
6201 * iwl3945_alive_start - called after REPLY_ALIVE notification received
6202 * from protocol/runtime uCode (initialization uCode's
6203 * Alive gets handled by iwl3945_init_alive_start()).
6205 static void iwl3945_alive_start(struct iwl3945_priv *priv)
6208 int thermal_spin = 0;
6211 IWL_DEBUG_INFO("Runtime Alive received.\n");
6213 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6214 /* We had an error bringing up the hardware, so take it
6215 * all the way back down so we can try again */
6216 IWL_DEBUG_INFO("Alive failed.\n");
6220 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6221 * This is a paranoid check, because we would not have gotten the
6222 * "runtime" alive if code weren't properly loaded. */
6223 if (iwl3945_verify_ucode(priv)) {
6224 /* Runtime instruction load was bad;
6225 * take it all the way back down so we can try again */
6226 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6230 iwl3945_clear_stations_table(priv);
6232 rc = iwl3945_grab_nic_access(priv);
6234 IWL_WARNING("Can not read rfkill status from adapter\n");
6238 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
6239 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6240 iwl3945_release_nic_access(priv);
6243 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6244 /* if rfkill is not on, then wait for thermal
6245 * sensor in adapter to kick in */
6246 while (iwl3945_hw_get_temperature(priv) == 0) {
6252 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6255 set_bit(STATUS_RF_KILL_HW, &priv->status);
6257 /* After the ALIVE response, we can send commands to 3945 uCode */
6258 set_bit(STATUS_ALIVE, &priv->status);
6260 /* Clear out the uCode error bit if it is set */
6261 clear_bit(STATUS_FW_ERROR, &priv->status);
6263 rc = iwl3945_init_channel_map(priv);
6265 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6269 iwl3945_init_geos(priv);
6271 if (iwl3945_is_rfkill(priv))
6274 if (!priv->mac80211_registered) {
6275 /* Unlock so any user space entry points can call back into
6276 * the driver without a deadlock... */
6277 mutex_unlock(&priv->mutex);
6278 iwl3945_rate_control_register(priv->hw);
6279 rc = ieee80211_register_hw(priv->hw);
6280 priv->hw->conf.beacon_int = 100;
6281 mutex_lock(&priv->mutex);
6284 iwl3945_rate_control_unregister(priv->hw);
6285 IWL_ERROR("Failed to register network "
6286 "device (error %d)\n", rc);
6290 priv->mac80211_registered = 1;
6292 iwl3945_reset_channel_flag(priv);
6294 ieee80211_start_queues(priv->hw);
6296 priv->active_rate = priv->rates_mask;
6297 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6299 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6301 if (iwl3945_is_associated(priv)) {
6302 struct iwl3945_rxon_cmd *active_rxon =
6303 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
6305 memcpy(&priv->staging_rxon, &priv->active_rxon,
6306 sizeof(priv->staging_rxon));
6307 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6309 /* Initialize our rx_config data */
6310 iwl3945_connection_init_rx_config(priv);
6311 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6314 /* Configure Bluetooth device coexistence support */
6315 iwl3945_send_bt_config(priv);
6317 /* Configure the adapter for unassociated operation */
6318 iwl3945_commit_rxon(priv);
6320 /* At this point, the NIC is initialized and operational */
6321 priv->notif_missed_beacons = 0;
6322 set_bit(STATUS_READY, &priv->status);
6324 iwl3945_reg_txpower_periodic(priv);
6326 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6328 if (priv->error_recovering)
6329 iwl3945_error_recovery(priv);
6334 queue_work(priv->workqueue, &priv->restart);
6337 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6339 static void __iwl3945_down(struct iwl3945_priv *priv)
6341 unsigned long flags;
6342 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6343 struct ieee80211_conf *conf = NULL;
6345 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6347 conf = ieee80211_get_hw_conf(priv->hw);
6350 set_bit(STATUS_EXIT_PENDING, &priv->status);
6352 iwl3945_clear_stations_table(priv);
6354 /* Unblock any waiting calls */
6355 wake_up_interruptible_all(&priv->wait_command_queue);
6357 /* Wipe out the EXIT_PENDING status bit if we are not actually
6358 * exiting the module */
6360 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6362 /* stop and reset the on-board processor */
6363 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6365 /* tell the device to stop sending interrupts */
6366 iwl3945_disable_interrupts(priv);
6368 if (priv->mac80211_registered)
6369 ieee80211_stop_queues(priv->hw);
6371 /* If we have not previously called iwl3945_init() then
6372 * clear all bits but the RF Kill and SUSPEND bits and return */
6373 if (!iwl3945_is_init(priv)) {
6374 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6376 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6378 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6383 /* ...otherwise clear out all the status bits but the RF Kill and
6384 * SUSPEND bits and continue taking the NIC down. */
6385 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6387 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6389 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6391 test_bit(STATUS_FW_ERROR, &priv->status) <<
6394 spin_lock_irqsave(&priv->lock, flags);
6395 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6396 spin_unlock_irqrestore(&priv->lock, flags);
6398 iwl3945_hw_txq_ctx_stop(priv);
6399 iwl3945_hw_rxq_stop(priv);
6401 spin_lock_irqsave(&priv->lock, flags);
6402 if (!iwl3945_grab_nic_access(priv)) {
6403 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6404 APMG_CLK_VAL_DMA_CLK_RQT);
6405 iwl3945_release_nic_access(priv);
6407 spin_unlock_irqrestore(&priv->lock, flags);
6411 iwl3945_hw_nic_stop_master(priv);
6412 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6413 iwl3945_hw_nic_reset(priv);
6416 memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6418 if (priv->ibss_beacon)
6419 dev_kfree_skb(priv->ibss_beacon);
6420 priv->ibss_beacon = NULL;
6422 /* clear out any free frames */
6423 iwl3945_clear_free_frames(priv);
6426 static void iwl3945_down(struct iwl3945_priv *priv)
6428 mutex_lock(&priv->mutex);
6429 __iwl3945_down(priv);
6430 mutex_unlock(&priv->mutex);
6432 iwl3945_cancel_deferred_work(priv);
6435 #define MAX_HW_RESTARTS 5
6437 static int __iwl3945_up(struct iwl3945_priv *priv)
6439 DECLARE_MAC_BUF(mac);
6442 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6443 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6447 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6448 IWL_WARNING("Radio disabled by SW RF kill (module "
6453 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6454 IWL_ERROR("ucode not available for device bringup\n");
6458 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6460 rc = iwl3945_hw_nic_init(priv);
6462 IWL_ERROR("Unable to int nic\n");
6466 /* make sure rfkill handshake bits are cleared */
6467 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6468 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6469 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6471 /* clear (again), then enable host interrupts */
6472 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6473 iwl3945_enable_interrupts(priv);
6475 /* really make sure rfkill handshake bits are cleared */
6476 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6477 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6479 /* Copy original ucode data image from disk into backup cache.
6480 * This will be used to initialize the on-board processor's
6481 * data SRAM for a clean start when the runtime program first loads. */
6482 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6483 priv->ucode_data.len);
6485 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6487 iwl3945_clear_stations_table(priv);
6489 /* load bootstrap state machine,
6490 * load bootstrap program into processor's memory,
6491 * prepare to load the "initialize" uCode */
6492 rc = iwl3945_load_bsm(priv);
6495 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6499 /* start card; "initialize" will load runtime ucode */
6500 iwl3945_nic_start(priv);
6502 /* MAC Address location in EEPROM is same for 3945/4965 */
6503 get_eeprom_mac(priv, priv->mac_addr);
6504 IWL_DEBUG_INFO("MAC address: %s\n",
6505 print_mac(mac, priv->mac_addr));
6507 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6509 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6514 set_bit(STATUS_EXIT_PENDING, &priv->status);
6515 __iwl3945_down(priv);
6517 /* tried to restart and config the device for as long as our
6518 * patience could withstand */
6519 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6524 /*****************************************************************************
6526 * Workqueue callbacks
6528 *****************************************************************************/
6530 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6532 struct iwl3945_priv *priv =
6533 container_of(data, struct iwl3945_priv, init_alive_start.work);
6535 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6538 mutex_lock(&priv->mutex);
6539 iwl3945_init_alive_start(priv);
6540 mutex_unlock(&priv->mutex);
6543 static void iwl3945_bg_alive_start(struct work_struct *data)
6545 struct iwl3945_priv *priv =
6546 container_of(data, struct iwl3945_priv, alive_start.work);
6548 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6551 mutex_lock(&priv->mutex);
6552 iwl3945_alive_start(priv);
6553 mutex_unlock(&priv->mutex);
6556 static void iwl3945_bg_rf_kill(struct work_struct *work)
6558 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6560 wake_up_interruptible(&priv->wait_command_queue);
6562 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6565 mutex_lock(&priv->mutex);
6567 if (!iwl3945_is_rfkill(priv)) {
6568 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6569 "HW and/or SW RF Kill no longer active, restarting "
6571 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6572 queue_work(priv->workqueue, &priv->restart);
6575 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6576 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6577 "disabled by SW switch\n");
6579 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6580 "Kill switch must be turned off for "
6581 "wireless networking to work.\n");
6583 mutex_unlock(&priv->mutex);
6586 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6588 static void iwl3945_bg_scan_check(struct work_struct *data)
6590 struct iwl3945_priv *priv =
6591 container_of(data, struct iwl3945_priv, scan_check.work);
6593 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6596 mutex_lock(&priv->mutex);
6597 if (test_bit(STATUS_SCANNING, &priv->status) ||
6598 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6599 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6600 "Scan completion watchdog resetting adapter (%dms)\n",
6601 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6603 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6604 iwl3945_send_scan_abort(priv);
6606 mutex_unlock(&priv->mutex);
6609 static void iwl3945_bg_request_scan(struct work_struct *data)
6611 struct iwl3945_priv *priv =
6612 container_of(data, struct iwl3945_priv, request_scan);
6613 struct iwl3945_host_cmd cmd = {
6614 .id = REPLY_SCAN_CMD,
6615 .len = sizeof(struct iwl3945_scan_cmd),
6616 .meta.flags = CMD_SIZE_HUGE,
6619 struct iwl3945_scan_cmd *scan;
6620 struct ieee80211_conf *conf = NULL;
6624 conf = ieee80211_get_hw_conf(priv->hw);
6626 mutex_lock(&priv->mutex);
6628 if (!iwl3945_is_ready(priv)) {
6629 IWL_WARNING("request scan called when driver not ready.\n");
6633 /* Make sure the scan wasn't cancelled before this queued work
6634 * was given the chance to run... */
6635 if (!test_bit(STATUS_SCANNING, &priv->status))
6638 /* This should never be called or scheduled if there is currently
6639 * a scan active in the hardware. */
6640 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6641 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6642 "Ignoring second request.\n");
6647 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6648 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6652 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6653 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6657 if (iwl3945_is_rfkill(priv)) {
6658 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6662 if (!test_bit(STATUS_READY, &priv->status)) {
6663 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6667 if (!priv->scan_bands) {
6668 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6673 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6674 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6681 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6683 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6684 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6686 if (iwl3945_is_associated(priv)) {
6689 u32 suspend_time = 100;
6690 u32 scan_suspend_time = 100;
6691 unsigned long flags;
6693 IWL_DEBUG_INFO("Scanning while associated...\n");
6695 spin_lock_irqsave(&priv->lock, flags);
6696 interval = priv->beacon_int;
6697 spin_unlock_irqrestore(&priv->lock, flags);
6699 scan->suspend_time = 0;
6700 scan->max_out_time = cpu_to_le32(200 * 1024);
6702 interval = suspend_time;
6704 * suspend time format:
6705 * 0-19: beacon interval in usec (time before exec.)
6707 * 24-31: number of beacons (suspend between channels)
6710 extra = (suspend_time / interval) << 24;
6711 scan_suspend_time = 0xFF0FFFFF &
6712 (extra | ((suspend_time % interval) * 1024));
6714 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6715 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6716 scan_suspend_time, interval);
6719 /* We should add the ability for user to lock to PASSIVE ONLY */
6720 if (priv->one_direct_scan) {
6722 ("Kicking off one direct scan for '%s'\n",
6723 iwl3945_escape_essid(priv->direct_ssid,
6724 priv->direct_ssid_len));
6725 scan->direct_scan[0].id = WLAN_EID_SSID;
6726 scan->direct_scan[0].len = priv->direct_ssid_len;
6727 memcpy(scan->direct_scan[0].ssid,
6728 priv->direct_ssid, priv->direct_ssid_len);
6730 } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6731 scan->direct_scan[0].id = WLAN_EID_SSID;
6732 scan->direct_scan[0].len = priv->essid_len;
6733 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6738 /* We don't build a direct scan probe request; the uCode will do
6739 * that based on the direct_mask added to each channel entry */
6740 scan->tx_cmd.len = cpu_to_le16(
6741 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6742 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6743 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6744 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6745 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6747 /* flags + rate selection */
6749 switch (priv->scan_bands) {
6751 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6752 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6753 scan->good_CRC_th = 0;
6754 phymode = MODE_IEEE80211G;
6758 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6759 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6760 phymode = MODE_IEEE80211A;
6764 IWL_WARNING("Invalid scan band count\n");
6768 /* select Rx antennas */
6769 scan->flags |= iwl3945_get_antenna_flags(priv);
6771 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6772 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6776 ("Initiating direct scan for %s.\n",
6777 iwl3945_escape_essid(priv->essid, priv->essid_len));
6779 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6781 scan->channel_count =
6782 iwl3945_get_channels_for_scan(
6783 priv, phymode, 1, /* active */
6785 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6787 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6788 scan->channel_count * sizeof(struct iwl3945_scan_channel);
6790 scan->len = cpu_to_le16(cmd.len);
6792 set_bit(STATUS_SCAN_HW, &priv->status);
6793 rc = iwl3945_send_cmd_sync(priv, &cmd);
6797 queue_delayed_work(priv->workqueue, &priv->scan_check,
6798 IWL_SCAN_CHECK_WATCHDOG);
6800 mutex_unlock(&priv->mutex);
6804 /* inform mac80211 scan aborted */
6805 queue_work(priv->workqueue, &priv->scan_completed);
6806 mutex_unlock(&priv->mutex);
6809 static void iwl3945_bg_up(struct work_struct *data)
6811 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6813 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6816 mutex_lock(&priv->mutex);
6818 mutex_unlock(&priv->mutex);
6821 static void iwl3945_bg_restart(struct work_struct *data)
6823 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6825 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6829 queue_work(priv->workqueue, &priv->up);
6832 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6834 struct iwl3945_priv *priv =
6835 container_of(data, struct iwl3945_priv, rx_replenish);
6837 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6840 mutex_lock(&priv->mutex);
6841 iwl3945_rx_replenish(priv);
6842 mutex_unlock(&priv->mutex);
6845 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6847 static void iwl3945_bg_post_associate(struct work_struct *data)
6849 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6850 post_associate.work);
6853 struct ieee80211_conf *conf = NULL;
6854 DECLARE_MAC_BUF(mac);
6856 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6857 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6862 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6864 print_mac(mac, priv->active_rxon.bssid_addr));
6866 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6869 mutex_lock(&priv->mutex);
6871 if (!priv->interface_id || !priv->is_open) {
6872 mutex_unlock(&priv->mutex);
6875 iwl3945_scan_cancel_timeout(priv, 200);
6877 conf = ieee80211_get_hw_conf(priv->hw);
6879 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6880 iwl3945_commit_rxon(priv);
6882 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6883 iwl3945_setup_rxon_timing(priv);
6884 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6885 sizeof(priv->rxon_timing), &priv->rxon_timing);
6887 IWL_WARNING("REPLY_RXON_TIMING failed - "
6888 "Attempting to continue.\n");
6890 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6892 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6894 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6895 priv->assoc_id, priv->beacon_int);
6897 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6898 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6900 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6902 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6903 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6904 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6906 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6908 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6909 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6913 iwl3945_commit_rxon(priv);
6915 switch (priv->iw_mode) {
6916 case IEEE80211_IF_TYPE_STA:
6917 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6920 case IEEE80211_IF_TYPE_IBSS:
6922 /* clear out the station table */
6923 iwl3945_clear_stations_table(priv);
6925 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6926 iwl3945_add_station(priv, priv->bssid, 0, 0);
6927 iwl3945_sync_sta(priv, IWL_STA_ID,
6928 (priv->phymode == MODE_IEEE80211A)?
6929 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6931 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6932 iwl3945_send_beacon_cmd(priv);
6937 IWL_ERROR("%s Should not be called in %d mode\n",
6938 __FUNCTION__, priv->iw_mode);
6942 iwl3945_sequence_reset(priv);
6944 #ifdef CONFIG_IWL3945_QOS
6945 iwl3945_activate_qos(priv, 0);
6946 #endif /* CONFIG_IWL3945_QOS */
6947 /* we have just associated, don't start scan too early */
6948 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6949 mutex_unlock(&priv->mutex);
6952 static void iwl3945_bg_abort_scan(struct work_struct *work)
6954 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6956 if (!iwl3945_is_ready(priv))
6959 mutex_lock(&priv->mutex);
6961 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6962 iwl3945_send_scan_abort(priv);
6964 mutex_unlock(&priv->mutex);
6967 static void iwl3945_bg_scan_completed(struct work_struct *work)
6969 struct iwl3945_priv *priv =
6970 container_of(work, struct iwl3945_priv, scan_completed);
6972 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6974 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6977 ieee80211_scan_completed(priv->hw);
6979 /* Since setting the TXPOWER may have been deferred while
6980 * performing the scan, fire one off */
6981 mutex_lock(&priv->mutex);
6982 iwl3945_hw_reg_send_txpower(priv);
6983 mutex_unlock(&priv->mutex);
6986 /*****************************************************************************
6988 * mac80211 entry point functions
6990 *****************************************************************************/
6992 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6994 struct iwl3945_priv *priv = hw->priv;
6996 IWL_DEBUG_MAC80211("enter\n");
6998 /* we should be verifying the device is ready to be opened */
6999 mutex_lock(&priv->mutex);
7003 if (!iwl3945_is_rfkill(priv))
7004 ieee80211_start_queues(priv->hw);
7006 mutex_unlock(&priv->mutex);
7007 IWL_DEBUG_MAC80211("leave\n");
7011 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
7013 struct iwl3945_priv *priv = hw->priv;
7015 IWL_DEBUG_MAC80211("enter\n");
7018 mutex_lock(&priv->mutex);
7019 /* stop mac, cancel any scan request and clear
7020 * RXON_FILTER_ASSOC_MSK BIT
7023 iwl3945_scan_cancel_timeout(priv, 100);
7024 cancel_delayed_work(&priv->post_associate);
7025 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7026 iwl3945_commit_rxon(priv);
7027 mutex_unlock(&priv->mutex);
7029 IWL_DEBUG_MAC80211("leave\n");
7032 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7033 struct ieee80211_tx_control *ctl)
7035 struct iwl3945_priv *priv = hw->priv;
7037 IWL_DEBUG_MAC80211("enter\n");
7039 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7040 IWL_DEBUG_MAC80211("leave - monitor\n");
7044 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7047 if (iwl3945_tx_skb(priv, skb, ctl))
7048 dev_kfree_skb_any(skb);
7050 IWL_DEBUG_MAC80211("leave\n");
7054 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
7055 struct ieee80211_if_init_conf *conf)
7057 struct iwl3945_priv *priv = hw->priv;
7058 unsigned long flags;
7059 DECLARE_MAC_BUF(mac);
7061 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7063 if (priv->interface_id) {
7064 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7068 spin_lock_irqsave(&priv->lock, flags);
7069 priv->interface_id = conf->if_id;
7071 spin_unlock_irqrestore(&priv->lock, flags);
7073 mutex_lock(&priv->mutex);
7075 if (conf->mac_addr) {
7076 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
7077 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7080 iwl3945_set_mode(priv, conf->type);
7082 IWL_DEBUG_MAC80211("leave\n");
7083 mutex_unlock(&priv->mutex);
7089 * iwl3945_mac_config - mac80211 config callback
7091 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7092 * be set inappropriately and the driver currently sets the hardware up to
7093 * use it whenever needed.
7095 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7097 struct iwl3945_priv *priv = hw->priv;
7098 const struct iwl3945_channel_info *ch_info;
7099 unsigned long flags;
7101 mutex_lock(&priv->mutex);
7102 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7104 if (!iwl3945_is_ready(priv)) {
7105 IWL_DEBUG_MAC80211("leave - not ready\n");
7106 mutex_unlock(&priv->mutex);
7110 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7111 * what is exposed through include/ declarations */
7112 if (unlikely(!iwl3945_param_disable_hw_scan &&
7113 test_bit(STATUS_SCANNING, &priv->status))) {
7114 IWL_DEBUG_MAC80211("leave - scanning\n");
7115 mutex_unlock(&priv->mutex);
7119 spin_lock_irqsave(&priv->lock, flags);
7121 ch_info = iwl3945_get_channel_info(priv, conf->phymode, conf->channel);
7122 if (!is_channel_valid(ch_info)) {
7123 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7124 conf->channel, conf->phymode);
7125 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7126 spin_unlock_irqrestore(&priv->lock, flags);
7127 mutex_unlock(&priv->mutex);
7131 iwl3945_set_rxon_channel(priv, conf->phymode, conf->channel);
7133 iwl3945_set_flags_for_phymode(priv, conf->phymode);
7135 /* The list of supported rates and rate mask can be different
7136 * for each phymode; since the phymode may have changed, reset
7137 * the rate mask to what mac80211 lists */
7138 iwl3945_set_rate(priv);
7140 spin_unlock_irqrestore(&priv->lock, flags);
7142 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7143 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7144 iwl3945_hw_channel_switch(priv, conf->channel);
7145 mutex_unlock(&priv->mutex);
7150 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
7152 if (!conf->radio_enabled) {
7153 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7154 mutex_unlock(&priv->mutex);
7158 if (iwl3945_is_rfkill(priv)) {
7159 IWL_DEBUG_MAC80211("leave - RF kill\n");
7160 mutex_unlock(&priv->mutex);
7164 iwl3945_set_rate(priv);
7166 if (memcmp(&priv->active_rxon,
7167 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7168 iwl3945_commit_rxon(priv);
7170 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7172 IWL_DEBUG_MAC80211("leave\n");
7174 mutex_unlock(&priv->mutex);
7179 static void iwl3945_config_ap(struct iwl3945_priv *priv)
7183 if (priv->status & STATUS_EXIT_PENDING)
7186 /* The following should be done only at AP bring up */
7187 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7189 /* RXON - unassoc (to set timing command) */
7190 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7191 iwl3945_commit_rxon(priv);
7194 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
7195 iwl3945_setup_rxon_timing(priv);
7196 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7197 sizeof(priv->rxon_timing), &priv->rxon_timing);
7199 IWL_WARNING("REPLY_RXON_TIMING failed - "
7200 "Attempting to continue.\n");
7202 /* FIXME: what should be the assoc_id for AP? */
7203 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7204 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7205 priv->staging_rxon.flags |=
7206 RXON_FLG_SHORT_PREAMBLE_MSK;
7208 priv->staging_rxon.flags &=
7209 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7211 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7212 if (priv->assoc_capability &
7213 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7214 priv->staging_rxon.flags |=
7215 RXON_FLG_SHORT_SLOT_MSK;
7217 priv->staging_rxon.flags &=
7218 ~RXON_FLG_SHORT_SLOT_MSK;
7220 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7221 priv->staging_rxon.flags &=
7222 ~RXON_FLG_SHORT_SLOT_MSK;
7224 /* restore RXON assoc */
7225 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7226 iwl3945_commit_rxon(priv);
7227 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
7229 iwl3945_send_beacon_cmd(priv);
7231 /* FIXME - we need to add code here to detect a totally new
7232 * configuration, reset the AP, unassoc, rxon timing, assoc,
7233 * clear sta table, add BCAST sta... */
7236 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7237 struct ieee80211_if_conf *conf)
7239 struct iwl3945_priv *priv = hw->priv;
7240 DECLARE_MAC_BUF(mac);
7241 unsigned long flags;
7247 /* XXX: this MUST use conf->mac_addr */
7249 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7250 (!conf->beacon || !conf->ssid_len)) {
7252 ("Leaving in AP mode because HostAPD is not ready.\n");
7256 mutex_lock(&priv->mutex);
7258 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7260 IWL_DEBUG_MAC80211("bssid: %s\n",
7261 print_mac(mac, conf->bssid));
7264 * very dubious code was here; the probe filtering flag is never set:
7266 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7267 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7269 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7270 IWL_DEBUG_MAC80211("leave - scanning\n");
7271 mutex_unlock(&priv->mutex);
7275 if (priv->interface_id != if_id) {
7276 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7277 mutex_unlock(&priv->mutex);
7281 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7283 conf->bssid = priv->mac_addr;
7284 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7285 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7286 print_mac(mac, conf->bssid));
7288 if (priv->ibss_beacon)
7289 dev_kfree_skb(priv->ibss_beacon);
7291 priv->ibss_beacon = conf->beacon;
7294 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7295 !is_multicast_ether_addr(conf->bssid)) {
7296 /* If there is currently a HW scan going on in the background
7297 * then we need to cancel it else the RXON below will fail. */
7298 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7299 IWL_WARNING("Aborted scan still in progress "
7301 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7302 mutex_unlock(&priv->mutex);
7305 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7307 /* TODO: Audit driver for usage of these members and see
7308 * if mac80211 deprecates them (priv->bssid looks like it
7309 * shouldn't be there, but I haven't scanned the IBSS code
7310 * to verify) - jpk */
7311 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7313 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7314 iwl3945_config_ap(priv);
7316 rc = iwl3945_commit_rxon(priv);
7317 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7318 iwl3945_add_station(priv,
7319 priv->active_rxon.bssid_addr, 1, 0);
7323 iwl3945_scan_cancel_timeout(priv, 100);
7324 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7325 iwl3945_commit_rxon(priv);
7328 spin_lock_irqsave(&priv->lock, flags);
7329 if (!conf->ssid_len)
7330 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7332 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7334 priv->essid_len = conf->ssid_len;
7335 spin_unlock_irqrestore(&priv->lock, flags);
7337 IWL_DEBUG_MAC80211("leave\n");
7338 mutex_unlock(&priv->mutex);
7343 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7344 unsigned int changed_flags,
7345 unsigned int *total_flags,
7346 int mc_count, struct dev_addr_list *mc_list)
7350 * see also iwl3945_connection_init_rx_config
7355 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7356 struct ieee80211_if_init_conf *conf)
7358 struct iwl3945_priv *priv = hw->priv;
7360 IWL_DEBUG_MAC80211("enter\n");
7362 mutex_lock(&priv->mutex);
7364 iwl3945_scan_cancel_timeout(priv, 100);
7365 cancel_delayed_work(&priv->post_associate);
7366 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7367 iwl3945_commit_rxon(priv);
7369 if (priv->interface_id == conf->if_id) {
7370 priv->interface_id = 0;
7371 memset(priv->bssid, 0, ETH_ALEN);
7372 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7373 priv->essid_len = 0;
7375 mutex_unlock(&priv->mutex);
7377 IWL_DEBUG_MAC80211("leave\n");
7381 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7384 unsigned long flags;
7385 struct iwl3945_priv *priv = hw->priv;
7387 IWL_DEBUG_MAC80211("enter\n");
7389 mutex_lock(&priv->mutex);
7390 spin_lock_irqsave(&priv->lock, flags);
7392 if (!iwl3945_is_ready_rf(priv)) {
7394 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7398 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7400 IWL_ERROR("ERROR: APs don't scan\n");
7404 /* we don't schedule scan within next_scan_jiffies period */
7405 if (priv->next_scan_jiffies &&
7406 time_after(priv->next_scan_jiffies, jiffies)) {
7410 /* if we just finished scan ask for delay */
7411 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7412 IWL_DELAY_NEXT_SCAN, jiffies)) {
7417 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7418 iwl3945_escape_essid(ssid, len), (int)len);
7420 priv->one_direct_scan = 1;
7421 priv->direct_ssid_len = (u8)
7422 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7423 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7425 priv->one_direct_scan = 0;
7427 rc = iwl3945_scan_initiate(priv);
7429 IWL_DEBUG_MAC80211("leave\n");
7432 spin_unlock_irqrestore(&priv->lock, flags);
7433 mutex_unlock(&priv->mutex);
7438 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7439 const u8 *local_addr, const u8 *addr,
7440 struct ieee80211_key_conf *key)
7442 struct iwl3945_priv *priv = hw->priv;
7446 IWL_DEBUG_MAC80211("enter\n");
7448 if (!iwl3945_param_hwcrypto) {
7449 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7453 if (is_zero_ether_addr(addr))
7454 /* only support pairwise keys */
7457 sta_id = iwl3945_hw_find_station(priv, addr);
7458 if (sta_id == IWL_INVALID_STATION) {
7459 DECLARE_MAC_BUF(mac);
7461 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7462 print_mac(mac, addr));
7466 mutex_lock(&priv->mutex);
7468 iwl3945_scan_cancel_timeout(priv, 100);
7472 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7474 iwl3945_set_rxon_hwcrypto(priv, 1);
7475 iwl3945_commit_rxon(priv);
7476 key->hw_key_idx = sta_id;
7477 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7478 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7482 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7484 iwl3945_set_rxon_hwcrypto(priv, 0);
7485 iwl3945_commit_rxon(priv);
7486 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7493 IWL_DEBUG_MAC80211("leave\n");
7494 mutex_unlock(&priv->mutex);
7499 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7500 const struct ieee80211_tx_queue_params *params)
7502 struct iwl3945_priv *priv = hw->priv;
7503 #ifdef CONFIG_IWL3945_QOS
7504 unsigned long flags;
7506 #endif /* CONFIG_IWL3945_QOS */
7508 IWL_DEBUG_MAC80211("enter\n");
7510 if (!iwl3945_is_ready_rf(priv)) {
7511 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7515 if (queue >= AC_NUM) {
7516 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7520 #ifdef CONFIG_IWL3945_QOS
7521 if (!priv->qos_data.qos_enable) {
7522 priv->qos_data.qos_active = 0;
7523 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7526 q = AC_NUM - 1 - queue;
7528 spin_lock_irqsave(&priv->lock, flags);
7530 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7531 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7532 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7533 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7534 cpu_to_le16((params->burst_time * 100));
7536 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7537 priv->qos_data.qos_active = 1;
7539 spin_unlock_irqrestore(&priv->lock, flags);
7541 mutex_lock(&priv->mutex);
7542 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7543 iwl3945_activate_qos(priv, 1);
7544 else if (priv->assoc_id && iwl3945_is_associated(priv))
7545 iwl3945_activate_qos(priv, 0);
7547 mutex_unlock(&priv->mutex);
7549 #endif /*CONFIG_IWL3945_QOS */
7551 IWL_DEBUG_MAC80211("leave\n");
7555 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7556 struct ieee80211_tx_queue_stats *stats)
7558 struct iwl3945_priv *priv = hw->priv;
7560 struct iwl3945_tx_queue *txq;
7561 struct iwl3945_queue *q;
7562 unsigned long flags;
7564 IWL_DEBUG_MAC80211("enter\n");
7566 if (!iwl3945_is_ready_rf(priv)) {
7567 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7571 spin_lock_irqsave(&priv->lock, flags);
7573 for (i = 0; i < AC_NUM; i++) {
7574 txq = &priv->txq[i];
7576 avail = iwl3945_queue_space(q);
7578 stats->data[i].len = q->n_window - avail;
7579 stats->data[i].limit = q->n_window - q->high_mark;
7580 stats->data[i].count = q->n_window;
7583 spin_unlock_irqrestore(&priv->lock, flags);
7585 IWL_DEBUG_MAC80211("leave\n");
7590 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7591 struct ieee80211_low_level_stats *stats)
7593 IWL_DEBUG_MAC80211("enter\n");
7594 IWL_DEBUG_MAC80211("leave\n");
7599 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7601 IWL_DEBUG_MAC80211("enter\n");
7602 IWL_DEBUG_MAC80211("leave\n");
7607 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7609 struct iwl3945_priv *priv = hw->priv;
7610 unsigned long flags;
7612 mutex_lock(&priv->mutex);
7613 IWL_DEBUG_MAC80211("enter\n");
7615 #ifdef CONFIG_IWL3945_QOS
7616 iwl3945_reset_qos(priv);
7618 cancel_delayed_work(&priv->post_associate);
7620 spin_lock_irqsave(&priv->lock, flags);
7622 priv->assoc_capability = 0;
7623 priv->call_post_assoc_from_beacon = 0;
7625 /* new association get rid of ibss beacon skb */
7626 if (priv->ibss_beacon)
7627 dev_kfree_skb(priv->ibss_beacon);
7629 priv->ibss_beacon = NULL;
7631 priv->beacon_int = priv->hw->conf.beacon_int;
7632 priv->timestamp1 = 0;
7633 priv->timestamp0 = 0;
7634 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7635 priv->beacon_int = 0;
7637 spin_unlock_irqrestore(&priv->lock, flags);
7639 /* we are restarting association process
7640 * clear RXON_FILTER_ASSOC_MSK bit
7642 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7643 iwl3945_scan_cancel_timeout(priv, 100);
7644 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7645 iwl3945_commit_rxon(priv);
7648 /* Per mac80211.h: This is only used in IBSS mode... */
7649 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7651 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7652 mutex_unlock(&priv->mutex);
7656 if (!iwl3945_is_ready_rf(priv)) {
7657 IWL_DEBUG_MAC80211("leave - not ready\n");
7658 mutex_unlock(&priv->mutex);
7662 priv->only_active_channel = 0;
7664 iwl3945_set_rate(priv);
7666 mutex_unlock(&priv->mutex);
7668 IWL_DEBUG_MAC80211("leave\n");
7672 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7673 struct ieee80211_tx_control *control)
7675 struct iwl3945_priv *priv = hw->priv;
7676 unsigned long flags;
7678 mutex_lock(&priv->mutex);
7679 IWL_DEBUG_MAC80211("enter\n");
7681 if (!iwl3945_is_ready_rf(priv)) {
7682 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7683 mutex_unlock(&priv->mutex);
7687 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7688 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7689 mutex_unlock(&priv->mutex);
7693 spin_lock_irqsave(&priv->lock, flags);
7695 if (priv->ibss_beacon)
7696 dev_kfree_skb(priv->ibss_beacon);
7698 priv->ibss_beacon = skb;
7702 IWL_DEBUG_MAC80211("leave\n");
7703 spin_unlock_irqrestore(&priv->lock, flags);
7705 #ifdef CONFIG_IWL3945_QOS
7706 iwl3945_reset_qos(priv);
7709 queue_work(priv->workqueue, &priv->post_associate.work);
7711 mutex_unlock(&priv->mutex);
7716 /*****************************************************************************
7720 *****************************************************************************/
7722 #ifdef CONFIG_IWL3945_DEBUG
7725 * The following adds a new attribute to the sysfs representation
7726 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7727 * used for controlling the debug level.
7729 * See the level definitions in iwl for details.
7732 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7734 return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7736 static ssize_t store_debug_level(struct device_driver *d,
7737 const char *buf, size_t count)
7739 char *p = (char *)buf;
7742 val = simple_strtoul(p, &p, 0);
7744 printk(KERN_INFO DRV_NAME
7745 ": %s is not in hex or decimal form.\n", buf);
7747 iwl3945_debug_level = val;
7749 return strnlen(buf, count);
7752 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7753 show_debug_level, store_debug_level);
7755 #endif /* CONFIG_IWL3945_DEBUG */
7757 static ssize_t show_rf_kill(struct device *d,
7758 struct device_attribute *attr, char *buf)
7761 * 0 - RF kill not enabled
7762 * 1 - SW based RF kill active (sysfs)
7763 * 2 - HW based RF kill active
7764 * 3 - Both HW and SW based RF kill active
7766 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7767 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7768 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7770 return sprintf(buf, "%i\n", val);
7773 static ssize_t store_rf_kill(struct device *d,
7774 struct device_attribute *attr,
7775 const char *buf, size_t count)
7777 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7779 mutex_lock(&priv->mutex);
7780 iwl3945_radio_kill_sw(priv, buf[0] == '1');
7781 mutex_unlock(&priv->mutex);
7786 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7788 static ssize_t show_temperature(struct device *d,
7789 struct device_attribute *attr, char *buf)
7791 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7793 if (!iwl3945_is_alive(priv))
7796 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7799 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7801 static ssize_t show_rs_window(struct device *d,
7802 struct device_attribute *attr,
7805 struct iwl3945_priv *priv = d->driver_data;
7806 return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7808 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7810 static ssize_t show_tx_power(struct device *d,
7811 struct device_attribute *attr, char *buf)
7813 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7814 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7817 static ssize_t store_tx_power(struct device *d,
7818 struct device_attribute *attr,
7819 const char *buf, size_t count)
7821 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7822 char *p = (char *)buf;
7825 val = simple_strtoul(p, &p, 10);
7827 printk(KERN_INFO DRV_NAME
7828 ": %s is not in decimal form.\n", buf);
7830 iwl3945_hw_reg_set_txpower(priv, val);
7835 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7837 static ssize_t show_flags(struct device *d,
7838 struct device_attribute *attr, char *buf)
7840 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7842 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7845 static ssize_t store_flags(struct device *d,
7846 struct device_attribute *attr,
7847 const char *buf, size_t count)
7849 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7850 u32 flags = simple_strtoul(buf, NULL, 0);
7852 mutex_lock(&priv->mutex);
7853 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7854 /* Cancel any currently running scans... */
7855 if (iwl3945_scan_cancel_timeout(priv, 100))
7856 IWL_WARNING("Could not cancel scan.\n");
7858 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7860 priv->staging_rxon.flags = cpu_to_le32(flags);
7861 iwl3945_commit_rxon(priv);
7864 mutex_unlock(&priv->mutex);
7869 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7871 static ssize_t show_filter_flags(struct device *d,
7872 struct device_attribute *attr, char *buf)
7874 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7876 return sprintf(buf, "0x%04X\n",
7877 le32_to_cpu(priv->active_rxon.filter_flags));
7880 static ssize_t store_filter_flags(struct device *d,
7881 struct device_attribute *attr,
7882 const char *buf, size_t count)
7884 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7885 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7887 mutex_lock(&priv->mutex);
7888 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7889 /* Cancel any currently running scans... */
7890 if (iwl3945_scan_cancel_timeout(priv, 100))
7891 IWL_WARNING("Could not cancel scan.\n");
7893 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7894 "0x%04X\n", filter_flags);
7895 priv->staging_rxon.filter_flags =
7896 cpu_to_le32(filter_flags);
7897 iwl3945_commit_rxon(priv);
7900 mutex_unlock(&priv->mutex);
7905 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7906 store_filter_flags);
7908 static ssize_t show_tune(struct device *d,
7909 struct device_attribute *attr, char *buf)
7911 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7913 return sprintf(buf, "0x%04X\n",
7914 (priv->phymode << 8) |
7915 le16_to_cpu(priv->active_rxon.channel));
7918 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode);
7920 static ssize_t store_tune(struct device *d,
7921 struct device_attribute *attr,
7922 const char *buf, size_t count)
7924 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7925 char *p = (char *)buf;
7926 u16 tune = simple_strtoul(p, &p, 0);
7927 u8 phymode = (tune >> 8) & 0xff;
7928 u16 channel = tune & 0xff;
7930 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7932 mutex_lock(&priv->mutex);
7933 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7934 (priv->phymode != phymode)) {
7935 const struct iwl3945_channel_info *ch_info;
7937 ch_info = iwl3945_get_channel_info(priv, phymode, channel);
7939 IWL_WARNING("Requested invalid phymode/channel "
7940 "combination: %d %d\n", phymode, channel);
7941 mutex_unlock(&priv->mutex);
7945 /* Cancel any currently running scans... */
7946 if (iwl3945_scan_cancel_timeout(priv, 100))
7947 IWL_WARNING("Could not cancel scan.\n");
7949 IWL_DEBUG_INFO("Committing phymode and "
7950 "rxon.channel = %d %d\n",
7953 iwl3945_set_rxon_channel(priv, phymode, channel);
7954 iwl3945_set_flags_for_phymode(priv, phymode);
7956 iwl3945_set_rate(priv);
7957 iwl3945_commit_rxon(priv);
7960 mutex_unlock(&priv->mutex);
7965 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7967 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7969 static ssize_t show_measurement(struct device *d,
7970 struct device_attribute *attr, char *buf)
7972 struct iwl3945_priv *priv = dev_get_drvdata(d);
7973 struct iwl3945_spectrum_notification measure_report;
7974 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7975 u8 *data = (u8 *) & measure_report;
7976 unsigned long flags;
7978 spin_lock_irqsave(&priv->lock, flags);
7979 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7980 spin_unlock_irqrestore(&priv->lock, flags);
7983 memcpy(&measure_report, &priv->measure_report, size);
7984 priv->measurement_status = 0;
7985 spin_unlock_irqrestore(&priv->lock, flags);
7987 while (size && (PAGE_SIZE - len)) {
7988 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7989 PAGE_SIZE - len, 1);
7991 if (PAGE_SIZE - len)
7995 size -= min(size, 16U);
8001 static ssize_t store_measurement(struct device *d,
8002 struct device_attribute *attr,
8003 const char *buf, size_t count)
8005 struct iwl3945_priv *priv = dev_get_drvdata(d);
8006 struct ieee80211_measurement_params params = {
8007 .channel = le16_to_cpu(priv->active_rxon.channel),
8008 .start_time = cpu_to_le64(priv->last_tsf),
8009 .duration = cpu_to_le16(1),
8011 u8 type = IWL_MEASURE_BASIC;
8017 strncpy(buffer, buf, min(sizeof(buffer), count));
8018 channel = simple_strtoul(p, NULL, 0);
8020 params.channel = channel;
8023 while (*p && *p != ' ')
8026 type = simple_strtoul(p + 1, NULL, 0);
8029 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8030 "channel %d (for '%s')\n", type, params.channel, buf);
8031 iwl3945_get_measurement(priv, ¶ms, type);
8036 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8037 show_measurement, store_measurement);
8038 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
8040 static ssize_t show_rate(struct device *d,
8041 struct device_attribute *attr, char *buf)
8043 struct iwl3945_priv *priv = dev_get_drvdata(d);
8044 unsigned long flags;
8047 spin_lock_irqsave(&priv->sta_lock, flags);
8048 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
8049 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
8051 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
8052 spin_unlock_irqrestore(&priv->sta_lock, flags);
8054 i = iwl3945_rate_index_from_plcp(i);
8056 return sprintf(buf, "0\n");
8058 return sprintf(buf, "%d%s\n",
8059 (iwl3945_rates[i].ieee >> 1),
8060 (iwl3945_rates[i].ieee & 0x1) ? ".5" : "");
8063 static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
8065 static ssize_t store_retry_rate(struct device *d,
8066 struct device_attribute *attr,
8067 const char *buf, size_t count)
8069 struct iwl3945_priv *priv = dev_get_drvdata(d);
8071 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8072 if (priv->retry_rate <= 0)
8073 priv->retry_rate = 1;
8078 static ssize_t show_retry_rate(struct device *d,
8079 struct device_attribute *attr, char *buf)
8081 struct iwl3945_priv *priv = dev_get_drvdata(d);
8082 return sprintf(buf, "%d", priv->retry_rate);
8085 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8088 static ssize_t store_power_level(struct device *d,
8089 struct device_attribute *attr,
8090 const char *buf, size_t count)
8092 struct iwl3945_priv *priv = dev_get_drvdata(d);
8096 mode = simple_strtoul(buf, NULL, 0);
8097 mutex_lock(&priv->mutex);
8099 if (!iwl3945_is_ready(priv)) {
8104 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8105 mode = IWL_POWER_AC;
8107 mode |= IWL_POWER_ENABLED;
8109 if (mode != priv->power_mode) {
8110 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8112 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8115 priv->power_mode = mode;
8121 mutex_unlock(&priv->mutex);
8125 #define MAX_WX_STRING 80
8127 /* Values are in microsecond */
8128 static const s32 timeout_duration[] = {
8135 static const s32 period_duration[] = {
8143 static ssize_t show_power_level(struct device *d,
8144 struct device_attribute *attr, char *buf)
8146 struct iwl3945_priv *priv = dev_get_drvdata(d);
8147 int level = IWL_POWER_LEVEL(priv->power_mode);
8150 p += sprintf(p, "%d ", level);
8152 case IWL_POWER_MODE_CAM:
8154 p += sprintf(p, "(AC)");
8156 case IWL_POWER_BATTERY:
8157 p += sprintf(p, "(BATTERY)");
8161 "(Timeout %dms, Period %dms)",
8162 timeout_duration[level - 1] / 1000,
8163 period_duration[level - 1] / 1000);
8166 if (!(priv->power_mode & IWL_POWER_ENABLED))
8167 p += sprintf(p, " OFF\n");
8169 p += sprintf(p, " \n");
8171 return (p - buf + 1);
8175 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8178 static ssize_t show_channels(struct device *d,
8179 struct device_attribute *attr, char *buf)
8181 struct iwl3945_priv *priv = dev_get_drvdata(d);
8183 struct ieee80211_channel *channels = NULL;
8184 const struct ieee80211_hw_mode *hw_mode = NULL;
8187 if (!iwl3945_is_ready(priv))
8190 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211G);
8192 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211B);
8194 channels = hw_mode->channels;
8195 count = hw_mode->num_channels;
8200 "Displaying %d channels in 2.4GHz band "
8201 "(802.11bg):\n", count);
8203 for (i = 0; i < count; i++)
8204 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8206 channels[i].power_level,
8208 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8209 " (IEEE 802.11h required)" : "",
8210 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8213 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8216 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8217 "active/passive" : "passive only");
8219 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211A);
8221 channels = hw_mode->channels;
8222 count = hw_mode->num_channels;
8228 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8229 "(802.11a):\n", count);
8231 for (i = 0; i < count; i++)
8232 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8234 channels[i].power_level,
8236 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8237 " (IEEE 802.11h required)" : "",
8238 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8241 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8244 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8245 "active/passive" : "passive only");
8250 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8252 static ssize_t show_statistics(struct device *d,
8253 struct device_attribute *attr, char *buf)
8255 struct iwl3945_priv *priv = dev_get_drvdata(d);
8256 u32 size = sizeof(struct iwl3945_notif_statistics);
8257 u32 len = 0, ofs = 0;
8258 u8 *data = (u8 *) & priv->statistics;
8261 if (!iwl3945_is_alive(priv))
8264 mutex_lock(&priv->mutex);
8265 rc = iwl3945_send_statistics_request(priv);
8266 mutex_unlock(&priv->mutex);
8270 "Error sending statistics request: 0x%08X\n", rc);
8274 while (size && (PAGE_SIZE - len)) {
8275 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8276 PAGE_SIZE - len, 1);
8278 if (PAGE_SIZE - len)
8282 size -= min(size, 16U);
8288 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8290 static ssize_t show_antenna(struct device *d,
8291 struct device_attribute *attr, char *buf)
8293 struct iwl3945_priv *priv = dev_get_drvdata(d);
8295 if (!iwl3945_is_alive(priv))
8298 return sprintf(buf, "%d\n", priv->antenna);
8301 static ssize_t store_antenna(struct device *d,
8302 struct device_attribute *attr,
8303 const char *buf, size_t count)
8306 struct iwl3945_priv *priv = dev_get_drvdata(d);
8311 if (sscanf(buf, "%1i", &ant) != 1) {
8312 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8316 if ((ant >= 0) && (ant <= 2)) {
8317 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8318 priv->antenna = (enum iwl3945_antenna)ant;
8320 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8326 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8328 static ssize_t show_status(struct device *d,
8329 struct device_attribute *attr, char *buf)
8331 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
8332 if (!iwl3945_is_alive(priv))
8334 return sprintf(buf, "0x%08x\n", (int)priv->status);
8337 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8339 static ssize_t dump_error_log(struct device *d,
8340 struct device_attribute *attr,
8341 const char *buf, size_t count)
8343 char *p = (char *)buf;
8346 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
8348 return strnlen(buf, count);
8351 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8353 static ssize_t dump_event_log(struct device *d,
8354 struct device_attribute *attr,
8355 const char *buf, size_t count)
8357 char *p = (char *)buf;
8360 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
8362 return strnlen(buf, count);
8365 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8367 /*****************************************************************************
8369 * driver setup and teardown
8371 *****************************************************************************/
8373 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
8375 priv->workqueue = create_workqueue(DRV_NAME);
8377 init_waitqueue_head(&priv->wait_command_queue);
8379 INIT_WORK(&priv->up, iwl3945_bg_up);
8380 INIT_WORK(&priv->restart, iwl3945_bg_restart);
8381 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
8382 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
8383 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
8384 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
8385 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
8386 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
8387 INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
8388 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
8389 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
8390 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
8392 iwl3945_hw_setup_deferred_work(priv);
8394 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8395 iwl3945_irq_tasklet, (unsigned long)priv);
8398 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8400 iwl3945_hw_cancel_deferred_work(priv);
8402 cancel_delayed_work_sync(&priv->init_alive_start);
8403 cancel_delayed_work(&priv->scan_check);
8404 cancel_delayed_work(&priv->alive_start);
8405 cancel_delayed_work(&priv->post_associate);
8406 cancel_work_sync(&priv->beacon_update);
8409 static struct attribute *iwl3945_sysfs_entries[] = {
8410 &dev_attr_antenna.attr,
8411 &dev_attr_channels.attr,
8412 &dev_attr_dump_errors.attr,
8413 &dev_attr_dump_events.attr,
8414 &dev_attr_flags.attr,
8415 &dev_attr_filter_flags.attr,
8416 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8417 &dev_attr_measurement.attr,
8419 &dev_attr_power_level.attr,
8420 &dev_attr_rate.attr,
8421 &dev_attr_retry_rate.attr,
8422 &dev_attr_rf_kill.attr,
8423 &dev_attr_rs_window.attr,
8424 &dev_attr_statistics.attr,
8425 &dev_attr_status.attr,
8426 &dev_attr_temperature.attr,
8427 &dev_attr_tune.attr,
8428 &dev_attr_tx_power.attr,
8433 static struct attribute_group iwl3945_attribute_group = {
8434 .name = NULL, /* put in device directory */
8435 .attrs = iwl3945_sysfs_entries,
8438 static struct ieee80211_ops iwl3945_hw_ops = {
8439 .tx = iwl3945_mac_tx,
8440 .start = iwl3945_mac_start,
8441 .stop = iwl3945_mac_stop,
8442 .add_interface = iwl3945_mac_add_interface,
8443 .remove_interface = iwl3945_mac_remove_interface,
8444 .config = iwl3945_mac_config,
8445 .config_interface = iwl3945_mac_config_interface,
8446 .configure_filter = iwl3945_configure_filter,
8447 .set_key = iwl3945_mac_set_key,
8448 .get_stats = iwl3945_mac_get_stats,
8449 .get_tx_stats = iwl3945_mac_get_tx_stats,
8450 .conf_tx = iwl3945_mac_conf_tx,
8451 .get_tsf = iwl3945_mac_get_tsf,
8452 .reset_tsf = iwl3945_mac_reset_tsf,
8453 .beacon_update = iwl3945_mac_beacon_update,
8454 .hw_scan = iwl3945_mac_hw_scan
8457 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8461 struct iwl3945_priv *priv;
8462 struct ieee80211_hw *hw;
8465 /* Disabling hardware scan means that mac80211 will perform scans
8466 * "the hard way", rather than using device's scan. */
8467 if (iwl3945_param_disable_hw_scan) {
8468 IWL_DEBUG_INFO("Disabling hw_scan\n");
8469 iwl3945_hw_ops.hw_scan = NULL;
8472 if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8473 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8474 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8475 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8480 /* mac80211 allocates memory for this device instance, including
8481 * space for this driver's private structure */
8482 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8484 IWL_ERROR("Can not allocate network device\n");
8488 SET_IEEE80211_DEV(hw, &pdev->dev);
8490 hw->rate_control_algorithm = "iwl-3945-rs";
8492 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8496 priv->pci_dev = pdev;
8498 /* Select antenna (may be helpful if only one antenna is connected) */
8499 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8500 #ifdef CONFIG_IWL3945_DEBUG
8501 iwl3945_debug_level = iwl3945_param_debug;
8502 atomic_set(&priv->restrict_refcnt, 0);
8504 priv->retry_rate = 1;
8506 priv->ibss_beacon = NULL;
8508 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8509 * the range of signal quality values that we'll provide.
8510 * Negative values for level/noise indicate that we'll provide dBm.
8511 * For WE, at least, non-0 values here *enable* display of values
8512 * in app (iwconfig). */
8513 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8514 hw->max_noise = -20; /* noise level, negative indicates dBm */
8515 hw->max_signal = 100; /* link quality indication (%) */
8517 /* Tell mac80211 our Tx characteristics */
8518 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8520 /* 4 EDCA QOS priorities */
8523 spin_lock_init(&priv->lock);
8524 spin_lock_init(&priv->power_data.lock);
8525 spin_lock_init(&priv->sta_lock);
8526 spin_lock_init(&priv->hcmd_lock);
8528 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8529 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8531 INIT_LIST_HEAD(&priv->free_frames);
8533 mutex_init(&priv->mutex);
8534 if (pci_enable_device(pdev)) {
8536 goto out_ieee80211_free_hw;
8539 pci_set_master(pdev);
8541 /* Clear the driver's (not device's) station table */
8542 iwl3945_clear_stations_table(priv);
8544 priv->data_retry_limit = -1;
8545 priv->ieee_channels = NULL;
8546 priv->ieee_rates = NULL;
8549 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8551 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8553 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8554 goto out_pci_disable_device;
8557 pci_set_drvdata(pdev, priv);
8558 err = pci_request_regions(pdev, DRV_NAME);
8560 goto out_pci_disable_device;
8562 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8563 * PCI Tx retries from interfering with C3 CPU state */
8564 pci_write_config_byte(pdev, 0x41, 0x00);
8566 priv->hw_base = pci_iomap(pdev, 0, 0);
8567 if (!priv->hw_base) {
8569 goto out_pci_release_regions;
8572 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8573 (unsigned long long) pci_resource_len(pdev, 0));
8574 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8576 /* Initialize module parameter values here */
8578 /* Disable radio (SW RF KILL) via parameter when loading driver */
8579 if (iwl3945_param_disable) {
8580 set_bit(STATUS_RF_KILL_SW, &priv->status);
8581 IWL_DEBUG_INFO("Radio disabled.\n");
8584 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8587 (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8590 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8591 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8592 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8593 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8598 * Rest are assumed ABG SKU -- if this is not the
8599 * case then the card will get the wrong 'Detected'
8600 * line in the kernel log however the code that
8601 * initializes the GEO table will detect no A-band
8602 * channels and remove the is_abg mask.
8609 printk(KERN_INFO DRV_NAME
8610 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8611 priv->is_abg ? "A" : "");
8613 /* Device-specific setup */
8614 if (iwl3945_hw_set_hw_setting(priv)) {
8615 IWL_ERROR("failed to set hw settings\n");
8616 mutex_unlock(&priv->mutex);
8620 #ifdef CONFIG_IWL3945_QOS
8621 if (iwl3945_param_qos_enable)
8622 priv->qos_data.qos_enable = 1;
8624 iwl3945_reset_qos(priv);
8626 priv->qos_data.qos_active = 0;
8627 priv->qos_data.qos_cap.val = 0;
8628 #endif /* CONFIG_IWL3945_QOS */
8630 iwl3945_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8631 iwl3945_setup_deferred_work(priv);
8632 iwl3945_setup_rx_handlers(priv);
8634 priv->rates_mask = IWL_RATES_MASK;
8635 /* If power management is turned on, default to AC mode */
8636 priv->power_mode = IWL_POWER_AC;
8637 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8639 iwl3945_disable_interrupts(priv);
8641 pci_enable_msi(pdev);
8643 err = request_irq(pdev->irq, iwl3945_isr, IRQF_SHARED, DRV_NAME, priv);
8645 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
8646 goto out_disable_msi;
8649 mutex_lock(&priv->mutex);
8651 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8653 IWL_ERROR("failed to create sysfs device attributes\n");
8654 mutex_unlock(&priv->mutex);
8655 goto out_release_irq;
8658 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8659 * ucode filename and max sizes are card-specific. */
8660 err = iwl3945_read_ucode(priv);
8662 IWL_ERROR("Could not read microcode: %d\n", err);
8663 mutex_unlock(&priv->mutex);
8667 mutex_unlock(&priv->mutex);
8669 IWL_DEBUG_INFO("Queueing UP work.\n");
8671 queue_work(priv->workqueue, &priv->up);
8676 iwl3945_dealloc_ucode_pci(priv);
8678 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8681 free_irq(pdev->irq, priv);
8684 pci_disable_msi(pdev);
8685 destroy_workqueue(priv->workqueue);
8686 priv->workqueue = NULL;
8687 iwl3945_unset_hw_setting(priv);
8690 pci_iounmap(pdev, priv->hw_base);
8691 out_pci_release_regions:
8692 pci_release_regions(pdev);
8693 out_pci_disable_device:
8694 pci_disable_device(pdev);
8695 pci_set_drvdata(pdev, NULL);
8696 out_ieee80211_free_hw:
8697 ieee80211_free_hw(priv->hw);
8702 static void iwl3945_pci_remove(struct pci_dev *pdev)
8704 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8705 struct list_head *p, *q;
8711 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8713 set_bit(STATUS_EXIT_PENDING, &priv->status);
8717 /* Free MAC hash list for ADHOC */
8718 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8719 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8721 kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8725 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8727 iwl3945_dealloc_ucode_pci(priv);
8730 iwl3945_rx_queue_free(priv, &priv->rxq);
8731 iwl3945_hw_txq_ctx_free(priv);
8733 iwl3945_unset_hw_setting(priv);
8734 iwl3945_clear_stations_table(priv);
8736 if (priv->mac80211_registered) {
8737 ieee80211_unregister_hw(priv->hw);
8738 iwl3945_rate_control_unregister(priv->hw);
8741 /*netif_stop_queue(dev); */
8742 flush_workqueue(priv->workqueue);
8744 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8745 * priv->workqueue... so we can't take down the workqueue
8747 destroy_workqueue(priv->workqueue);
8748 priv->workqueue = NULL;
8750 free_irq(pdev->irq, priv);
8751 pci_disable_msi(pdev);
8752 pci_iounmap(pdev, priv->hw_base);
8753 pci_release_regions(pdev);
8754 pci_disable_device(pdev);
8755 pci_set_drvdata(pdev, NULL);
8757 kfree(priv->channel_info);
8759 kfree(priv->ieee_channels);
8760 kfree(priv->ieee_rates);
8762 if (priv->ibss_beacon)
8763 dev_kfree_skb(priv->ibss_beacon);
8765 ieee80211_free_hw(priv->hw);
8770 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8772 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8774 set_bit(STATUS_IN_SUSPEND, &priv->status);
8776 /* Take down the device; powers it off, etc. */
8779 if (priv->mac80211_registered)
8780 ieee80211_stop_queues(priv->hw);
8782 pci_save_state(pdev);
8783 pci_disable_device(pdev);
8784 pci_set_power_state(pdev, PCI_D3hot);
8789 static void iwl3945_resume(struct iwl3945_priv *priv)
8791 unsigned long flags;
8793 /* The following it a temporary work around due to the
8794 * suspend / resume not fully initializing the NIC correctly.
8795 * Without all of the following, resume will not attempt to take
8796 * down the NIC (it shouldn't really need to) and will just try
8797 * and bring the NIC back up. However that fails during the
8798 * ucode verification process. This then causes iwl3945_down to be
8799 * called *after* iwl3945_hw_nic_init() has succeeded -- which
8800 * then lets the next init sequence succeed. So, we've
8801 * replicated all of that NIC init code here... */
8803 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8805 iwl3945_hw_nic_init(priv);
8807 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8808 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
8809 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
8810 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8811 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8812 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8814 /* tell the device to stop sending interrupts */
8815 iwl3945_disable_interrupts(priv);
8817 spin_lock_irqsave(&priv->lock, flags);
8818 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
8820 if (!iwl3945_grab_nic_access(priv)) {
8821 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
8822 APMG_CLK_VAL_DMA_CLK_RQT);
8823 iwl3945_release_nic_access(priv);
8825 spin_unlock_irqrestore(&priv->lock, flags);
8829 iwl3945_hw_nic_reset(priv);
8831 /* Bring the device back up */
8832 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8833 queue_work(priv->workqueue, &priv->up);
8836 static int iwl3945_pci_resume(struct pci_dev *pdev)
8838 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8841 printk(KERN_INFO "Coming out of suspend...\n");
8843 pci_set_power_state(pdev, PCI_D0);
8844 err = pci_enable_device(pdev);
8845 pci_restore_state(pdev);
8848 * Suspend/Resume resets the PCI configuration space, so we have to
8849 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8850 * from interfering with C3 CPU state. pci_restore_state won't help
8851 * here since it only restores the first 64 bytes pci config header.
8853 pci_write_config_byte(pdev, 0x41, 0x00);
8855 iwl3945_resume(priv);
8860 #endif /* CONFIG_PM */
8862 /*****************************************************************************
8864 * driver and module entry point
8866 *****************************************************************************/
8868 static struct pci_driver iwl3945_driver = {
8870 .id_table = iwl3945_hw_card_ids,
8871 .probe = iwl3945_pci_probe,
8872 .remove = __devexit_p(iwl3945_pci_remove),
8874 .suspend = iwl3945_pci_suspend,
8875 .resume = iwl3945_pci_resume,
8879 static int __init iwl3945_init(void)
8883 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8884 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8885 ret = pci_register_driver(&iwl3945_driver);
8887 IWL_ERROR("Unable to initialize PCI module\n");
8890 #ifdef CONFIG_IWL3945_DEBUG
8891 ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8893 IWL_ERROR("Unable to create driver sysfs file\n");
8894 pci_unregister_driver(&iwl3945_driver);
8902 static void __exit iwl3945_exit(void)
8904 #ifdef CONFIG_IWL3945_DEBUG
8905 driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8907 pci_unregister_driver(&iwl3945_driver);
8910 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8911 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8912 module_param_named(disable, iwl3945_param_disable, int, 0444);
8913 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8914 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8915 MODULE_PARM_DESC(hwcrypto,
8916 "using hardware crypto engine (default 0 [software])\n");
8917 module_param_named(debug, iwl3945_param_debug, int, 0444);
8918 MODULE_PARM_DESC(debug, "debug output mask");
8919 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8920 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8922 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8923 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8926 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8927 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8929 module_exit(iwl3945_exit);
8930 module_init(iwl3945_init);