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/mac80211.h>
46 #include <asm/div64.h>
50 #include "iwl-helpers.h"
52 #ifdef CONFIG_IWL4965_DEBUG
53 u32 iwl4965_debug_level;
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
57 struct iwl4965_tx_queue *txq);
59 /******************************************************************************
63 ******************************************************************************/
65 /* module parameters */
66 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
67 static int iwl4965_param_debug; /* def: 0 = minimal debug log messages */
68 static int iwl4965_param_disable; /* def: enable radio */
69 static int iwl4965_param_antenna; /* def: 0 = both antennas (use diversity) */
70 int iwl4965_param_hwcrypto; /* def: using software encryption */
71 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
72 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
73 int iwl4965_param_amsdu_size_8K; /* def: enable 8K amsdu size */
76 * module name, copyright, version, etc.
77 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
80 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
82 #ifdef CONFIG_IWL4965_DEBUG
88 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
94 #define IWLWIFI_VERSION "1.2.26k" 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 IWL4965_UCODE_API "-1"
104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
105 MODULE_VERSION(DRV_VERSION);
106 MODULE_AUTHOR(DRV_COPYRIGHT);
107 MODULE_LICENSE("GPL");
109 __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_supported_band *iwl4965_get_hw_mode(
120 struct iwl4965_priv *priv, enum ieee80211_band band)
122 return priv->hw->wiphy->bands[band];
125 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
127 /* Single white space is for Linksys APs */
128 if (essid_len == 1 && essid[0] == ' ')
131 /* Otherwise, if the entire essid is 0, we assume it is hidden */
134 if (essid[essid_len] != '\0')
141 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
143 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
144 const char *s = essid;
147 if (iwl4965_is_empty_essid(essid, essid_len)) {
148 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
152 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
153 while (essid_len--) {
165 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
168 * Theory of operation
170 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
171 * of buffer descriptors, each of which points to one or more data buffers for
172 * the device to read from or fill. Driver and device exchange status of each
173 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
174 * entries in each circular buffer, to protect against confusing empty and full
177 * The device reads or writes the data in the queues via the device's several
178 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
180 * For Tx queue, there are low mark and high mark limits. If, after queuing
181 * the packet for Tx, free space become < low mark, Tx queue stopped. When
182 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
185 * The 4965 operates with up to 17 queues: One receive queue, one transmit
186 * queue (#4) for sending commands to the device firmware, and 15 other
187 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
189 * See more detailed info in iwl-4965-hw.h.
190 ***************************************************/
192 int iwl4965_queue_space(const struct iwl4965_queue *q)
194 int s = q->read_ptr - q->write_ptr;
196 if (q->read_ptr > q->write_ptr)
201 /* keep some reserve to not confuse empty and full situations */
209 * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
210 * @index -- current index
211 * @n_bd -- total number of entries in queue (must be power of 2)
213 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
215 return ++index & (n_bd - 1);
219 * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
220 * @index -- current index
221 * @n_bd -- total number of entries in queue (must be power of 2)
223 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
225 return --index & (n_bd - 1);
228 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
230 return q->write_ptr > q->read_ptr ?
231 (i >= q->read_ptr && i < q->write_ptr) :
232 !(i < q->read_ptr && i >= q->write_ptr);
235 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
237 /* This is for scan command, the big buffer at end of command array */
239 return q->n_window; /* must be power of 2 */
241 /* Otherwise, use normal size buffers */
242 return index & (q->n_window - 1);
246 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
248 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
249 int count, int slots_num, u32 id)
252 q->n_window = slots_num;
255 /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
256 * and iwl4965_queue_dec_wrap are broken. */
257 BUG_ON(!is_power_of_2(count));
259 /* slots_num must be power-of-two size, otherwise
260 * get_cmd_index is broken. */
261 BUG_ON(!is_power_of_2(slots_num));
263 q->low_mark = q->n_window / 4;
267 q->high_mark = q->n_window / 8;
268 if (q->high_mark < 2)
271 q->write_ptr = q->read_ptr = 0;
277 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
279 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
280 struct iwl4965_tx_queue *txq, u32 id)
282 struct pci_dev *dev = priv->pci_dev;
284 /* Driver private data, only for Tx (not command) queues,
285 * not shared with device. */
286 if (id != IWL_CMD_QUEUE_NUM) {
287 txq->txb = kmalloc(sizeof(txq->txb[0]) *
288 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
290 IWL_ERROR("kmalloc for auxiliary BD "
291 "structures failed\n");
297 /* Circular buffer of transmit frame descriptors (TFDs),
298 * shared with device */
299 txq->bd = pci_alloc_consistent(dev,
300 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
304 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
305 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
322 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
324 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
325 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
327 struct pci_dev *dev = priv->pci_dev;
332 * Alloc buffer array for commands (Tx or other types of commands).
333 * For the command queue (#4), allocate command space + one big
334 * command for scan, since scan command is very huge; the system will
335 * not have two scans at the same time, so only one is needed.
336 * For normal Tx queues (all other queues), no super-size command
339 len = sizeof(struct iwl4965_cmd) * slots_num;
340 if (txq_id == IWL_CMD_QUEUE_NUM)
341 len += IWL_MAX_SCAN_SIZE;
342 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
346 /* Alloc driver data array and TFD circular buffer */
347 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
349 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
353 txq->need_update = 0;
355 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
356 * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
357 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
359 /* Initialize queue's high/low-water marks, and head/tail indexes */
360 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
362 /* Tell device where to find queue */
363 iwl4965_hw_tx_queue_init(priv, txq);
369 * iwl4965_tx_queue_free - Deallocate DMA queue.
370 * @txq: Transmit queue to deallocate.
372 * Empty queue by removing and destroying all BD's.
374 * 0-fill, but do not free "txq" descriptor structure.
376 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
378 struct iwl4965_queue *q = &txq->q;
379 struct pci_dev *dev = priv->pci_dev;
385 /* first, empty all BD's */
386 for (; q->write_ptr != q->read_ptr;
387 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
388 iwl4965_hw_txq_free_tfd(priv, txq);
390 len = sizeof(struct iwl4965_cmd) * q->n_window;
391 if (q->id == IWL_CMD_QUEUE_NUM)
392 len += IWL_MAX_SCAN_SIZE;
394 /* De-alloc array of command/tx buffers */
395 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
397 /* De-alloc circular buffer of TFDs */
399 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
400 txq->q.n_bd, txq->bd, txq->q.dma_addr);
402 /* De-alloc array of per-TFD driver data */
408 /* 0-fill queue descriptor structure */
409 memset(txq, 0, sizeof(*txq));
412 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
414 /*************** STATION TABLE MANAGEMENT ****
415 * mac80211 should be examined to determine if sta_info is duplicating
416 * the functionality provided here
419 /**************************************************************/
421 #if 0 /* temporary disable till we add real remove station */
423 * iwl4965_remove_station - Remove driver's knowledge of station.
425 * NOTE: This does not remove station from device's station table.
427 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
429 int index = IWL_INVALID_STATION;
433 spin_lock_irqsave(&priv->sta_lock, flags);
437 else if (is_broadcast_ether_addr(addr))
438 index = priv->hw_setting.bcast_sta_id;
440 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
441 if (priv->stations[i].used &&
442 !compare_ether_addr(priv->stations[i].sta.sta.addr,
448 if (unlikely(index == IWL_INVALID_STATION))
451 if (priv->stations[index].used) {
452 priv->stations[index].used = 0;
453 priv->num_stations--;
456 BUG_ON(priv->num_stations < 0);
459 spin_unlock_irqrestore(&priv->sta_lock, flags);
465 * iwl4965_clear_stations_table - Clear the driver's station table
467 * NOTE: This does not clear or otherwise alter the device's station table.
469 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
473 spin_lock_irqsave(&priv->sta_lock, flags);
475 priv->num_stations = 0;
476 memset(priv->stations, 0, sizeof(priv->stations));
478 spin_unlock_irqrestore(&priv->sta_lock, flags);
482 * iwl4965_add_station_flags - Add station to tables in driver and device
484 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
485 int is_ap, u8 flags, void *ht_data)
488 int index = IWL_INVALID_STATION;
489 struct iwl4965_station_entry *station;
490 unsigned long flags_spin;
491 DECLARE_MAC_BUF(mac);
493 spin_lock_irqsave(&priv->sta_lock, flags_spin);
496 else if (is_broadcast_ether_addr(addr))
497 index = priv->hw_setting.bcast_sta_id;
499 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
500 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
506 if (!priv->stations[i].used &&
507 index == IWL_INVALID_STATION)
512 /* These two conditions have the same outcome, but keep them separate
513 since they have different meanings */
514 if (unlikely(index == IWL_INVALID_STATION)) {
515 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
519 if (priv->stations[index].used &&
520 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
521 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
526 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
527 station = &priv->stations[index];
529 priv->num_stations++;
531 /* Set up the REPLY_ADD_STA command to send to device */
532 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
533 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
534 station->sta.mode = 0;
535 station->sta.sta.sta_id = index;
536 station->sta.station_flags = 0;
538 #ifdef CONFIG_IWL4965_HT
539 /* BCAST station and IBSS stations do not work in HT mode */
540 if (index != priv->hw_setting.bcast_sta_id &&
541 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
542 iwl4965_set_ht_add_station(priv, index,
543 (struct ieee80211_ht_info *) ht_data);
544 #endif /*CONFIG_IWL4965_HT*/
546 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
548 /* Add station to device's station table */
549 iwl4965_send_add_station(priv, &station->sta, flags);
554 /*************** DRIVER STATUS FUNCTIONS *****/
556 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
558 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
559 * set but EXIT_PENDING is not */
560 return test_bit(STATUS_READY, &priv->status) &&
561 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
562 !test_bit(STATUS_EXIT_PENDING, &priv->status);
565 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
567 return test_bit(STATUS_ALIVE, &priv->status);
570 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
572 return test_bit(STATUS_INIT, &priv->status);
575 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
577 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
578 test_bit(STATUS_RF_KILL_SW, &priv->status);
581 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
584 if (iwl4965_is_rfkill(priv))
587 return iwl4965_is_ready(priv);
590 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
592 #define IWL_CMD(x) case x : return #x
594 static const char *get_cmd_string(u8 cmd)
597 IWL_CMD(REPLY_ALIVE);
598 IWL_CMD(REPLY_ERROR);
600 IWL_CMD(REPLY_RXON_ASSOC);
601 IWL_CMD(REPLY_QOS_PARAM);
602 IWL_CMD(REPLY_RXON_TIMING);
603 IWL_CMD(REPLY_ADD_STA);
604 IWL_CMD(REPLY_REMOVE_STA);
605 IWL_CMD(REPLY_REMOVE_ALL_STA);
607 IWL_CMD(REPLY_RATE_SCALE);
608 IWL_CMD(REPLY_LEDS_CMD);
609 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
610 IWL_CMD(RADAR_NOTIFICATION);
611 IWL_CMD(REPLY_QUIET_CMD);
612 IWL_CMD(REPLY_CHANNEL_SWITCH);
613 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
614 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
615 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
616 IWL_CMD(POWER_TABLE_CMD);
617 IWL_CMD(PM_SLEEP_NOTIFICATION);
618 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
619 IWL_CMD(REPLY_SCAN_CMD);
620 IWL_CMD(REPLY_SCAN_ABORT_CMD);
621 IWL_CMD(SCAN_START_NOTIFICATION);
622 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
623 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
624 IWL_CMD(BEACON_NOTIFICATION);
625 IWL_CMD(REPLY_TX_BEACON);
626 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
627 IWL_CMD(QUIET_NOTIFICATION);
628 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
629 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
630 IWL_CMD(REPLY_BT_CONFIG);
631 IWL_CMD(REPLY_STATISTICS_CMD);
632 IWL_CMD(STATISTICS_NOTIFICATION);
633 IWL_CMD(REPLY_CARD_STATE_CMD);
634 IWL_CMD(CARD_STATE_NOTIFICATION);
635 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
636 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
637 IWL_CMD(SENSITIVITY_CMD);
638 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
639 IWL_CMD(REPLY_RX_PHY_CMD);
640 IWL_CMD(REPLY_RX_MPDU_CMD);
641 IWL_CMD(REPLY_4965_RX);
642 IWL_CMD(REPLY_COMPRESSED_BA);
649 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
652 * iwl4965_enqueue_hcmd - enqueue a uCode command
653 * @priv: device private data point
654 * @cmd: a point to the ucode command structure
656 * The function returns < 0 values to indicate the operation is
657 * failed. On success, it turns the index (> 0) of command in the
660 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
662 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
663 struct iwl4965_queue *q = &txq->q;
664 struct iwl4965_tfd_frame *tfd;
666 struct iwl4965_cmd *out_cmd;
668 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
669 dma_addr_t phys_addr;
673 /* If any of the command structures end up being larger than
674 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
675 * we will need to increase the size of the TFD entries */
676 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
677 !(cmd->meta.flags & CMD_SIZE_HUGE));
679 if (iwl4965_is_rfkill(priv)) {
680 IWL_DEBUG_INFO("Not sending command - RF KILL");
684 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
685 IWL_ERROR("No space for Tx\n");
689 spin_lock_irqsave(&priv->hcmd_lock, flags);
691 tfd = &txq->bd[q->write_ptr];
692 memset(tfd, 0, sizeof(*tfd));
694 control_flags = (u32 *) tfd;
696 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
697 out_cmd = &txq->cmd[idx];
699 out_cmd->hdr.cmd = cmd->id;
700 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
701 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
703 /* At this point, the out_cmd now has all of the incoming cmd
706 out_cmd->hdr.flags = 0;
707 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
708 INDEX_TO_SEQ(q->write_ptr));
709 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
710 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
712 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
713 offsetof(struct iwl4965_cmd, hdr);
714 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
716 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
717 "%d bytes at %d[%d]:%d\n",
718 get_cmd_string(out_cmd->hdr.cmd),
719 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
720 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
722 txq->need_update = 1;
724 /* Set up entry in queue's byte count circular buffer */
725 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
727 /* Increment and update queue's write index */
728 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
729 iwl4965_tx_queue_update_write_ptr(priv, txq);
731 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
732 return ret ? ret : idx;
735 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
739 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
741 /* An asynchronous command can not expect an SKB to be set. */
742 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
744 /* An asynchronous command MUST have a callback. */
745 BUG_ON(!cmd->meta.u.callback);
747 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
750 ret = iwl4965_enqueue_hcmd(priv, cmd);
752 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
753 get_cmd_string(cmd->id), ret);
759 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
763 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
765 BUG_ON(cmd->meta.flags & CMD_ASYNC);
767 /* A synchronous command can not have a callback set. */
768 BUG_ON(cmd->meta.u.callback != NULL);
770 if (atomic_xchg(&entry, 1)) {
771 IWL_ERROR("Error sending %s: Already sending a host command\n",
772 get_cmd_string(cmd->id));
776 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
778 if (cmd->meta.flags & CMD_WANT_SKB)
779 cmd->meta.source = &cmd->meta;
781 cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
784 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
785 get_cmd_string(cmd->id), ret);
789 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
790 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
791 HOST_COMPLETE_TIMEOUT);
793 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
794 IWL_ERROR("Error sending %s: time out after %dms.\n",
795 get_cmd_string(cmd->id),
796 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
798 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
804 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
805 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
806 get_cmd_string(cmd->id));
810 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
811 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
812 get_cmd_string(cmd->id));
816 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
817 IWL_ERROR("Error: Response NULL in '%s'\n",
818 get_cmd_string(cmd->id));
827 if (cmd->meta.flags & CMD_WANT_SKB) {
828 struct iwl4965_cmd *qcmd;
830 /* Cancel the CMD_WANT_SKB flag for the cmd in the
831 * TX cmd queue. Otherwise in case the cmd comes
832 * in later, it will possibly set an invalid
833 * address (cmd->meta.source). */
834 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
835 qcmd->meta.flags &= ~CMD_WANT_SKB;
838 if (cmd->meta.u.skb) {
839 dev_kfree_skb_any(cmd->meta.u.skb);
840 cmd->meta.u.skb = NULL;
843 atomic_set(&entry, 0);
847 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
849 if (cmd->meta.flags & CMD_ASYNC)
850 return iwl4965_send_cmd_async(priv, cmd);
852 return iwl4965_send_cmd_sync(priv, cmd);
855 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
857 struct iwl4965_host_cmd cmd = {
863 return iwl4965_send_cmd_sync(priv, &cmd);
866 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
868 struct iwl4965_host_cmd cmd = {
874 return iwl4965_send_cmd_sync(priv, &cmd);
877 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
879 return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
883 * iwl4965_rxon_add_station - add station into station table.
885 * there is only one AP station with id= IWL_AP_ID
886 * NOTE: mutex must be held before calling this fnction
888 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
889 const u8 *addr, int is_ap)
893 /* Add station to device's station table */
894 #ifdef CONFIG_IWL4965_HT
895 struct ieee80211_conf *conf = &priv->hw->conf;
896 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
899 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
900 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
901 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
904 #endif /* CONFIG_IWL4965_HT */
905 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
908 /* Set up default rate scaling table in device's station table */
909 iwl4965_add_station(priv, addr, is_ap);
915 * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
916 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
917 * @channel: Any channel valid for the requested phymode
919 * In addition to setting the staging RXON, priv->phymode is also set.
921 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
922 * in the staging RXON flag structure based on the phymode
924 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv,
925 enum ieee80211_band band,
928 if (!iwl4965_get_channel_info(priv, band, channel)) {
929 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
934 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
935 (priv->band == band))
938 priv->staging_rxon.channel = cpu_to_le16(channel);
939 if (band == IEEE80211_BAND_5GHZ)
940 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
942 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
946 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
952 * iwl4965_check_rxon_cmd - validate RXON structure is valid
954 * NOTE: This is really only useful during development and can eventually
955 * be #ifdef'd out once the driver is stable and folks aren't actively
958 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
963 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
964 error |= le32_to_cpu(rxon->flags &
965 (RXON_FLG_TGJ_NARROW_BAND_MSK |
966 RXON_FLG_RADAR_DETECT_MSK));
968 IWL_WARNING("check 24G fields %d | %d\n",
971 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
972 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
974 IWL_WARNING("check 52 fields %d | %d\n",
976 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
978 IWL_WARNING("check 52 CCK %d | %d\n",
981 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
983 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
985 /* make sure basic rates 6Mbps and 1Mbps are supported */
986 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
987 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
989 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
991 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
993 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
995 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
996 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
998 IWL_WARNING("check CCK and short slot %d | %d\n",
1001 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1002 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1004 IWL_WARNING("check CCK & auto detect %d | %d\n",
1007 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1008 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1010 IWL_WARNING("check TGG and auto detect %d | %d\n",
1014 IWL_WARNING("Tuning to channel %d\n",
1015 le16_to_cpu(rxon->channel));
1018 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1025 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1026 * @priv: staging_rxon is compared to active_rxon
1028 * If the RXON structure is changing enough to require a new tune,
1029 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1030 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1032 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1035 /* These items are only settable from the full RXON command */
1036 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1037 compare_ether_addr(priv->staging_rxon.bssid_addr,
1038 priv->active_rxon.bssid_addr) ||
1039 compare_ether_addr(priv->staging_rxon.node_addr,
1040 priv->active_rxon.node_addr) ||
1041 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1042 priv->active_rxon.wlap_bssid_addr) ||
1043 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1044 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1045 (priv->staging_rxon.air_propagation !=
1046 priv->active_rxon.air_propagation) ||
1047 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1048 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1049 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1050 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1051 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1052 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1055 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1056 * be updated with the RXON_ASSOC command -- however only some
1057 * flag transitions are allowed using RXON_ASSOC */
1059 /* Check if we are not switching bands */
1060 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1061 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1064 /* Check if we are switching association toggle */
1065 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1066 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1072 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1075 struct iwl4965_rx_packet *res = NULL;
1076 struct iwl4965_rxon_assoc_cmd rxon_assoc;
1077 struct iwl4965_host_cmd cmd = {
1078 .id = REPLY_RXON_ASSOC,
1079 .len = sizeof(rxon_assoc),
1080 .meta.flags = CMD_WANT_SKB,
1081 .data = &rxon_assoc,
1083 const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1084 const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1086 if ((rxon1->flags == rxon2->flags) &&
1087 (rxon1->filter_flags == rxon2->filter_flags) &&
1088 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1089 (rxon1->ofdm_ht_single_stream_basic_rates ==
1090 rxon2->ofdm_ht_single_stream_basic_rates) &&
1091 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1092 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1093 (rxon1->rx_chain == rxon2->rx_chain) &&
1094 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1095 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1099 rxon_assoc.flags = priv->staging_rxon.flags;
1100 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1101 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1102 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1103 rxon_assoc.reserved = 0;
1104 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1105 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1106 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1107 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1108 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1110 rc = iwl4965_send_cmd_sync(priv, &cmd);
1114 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1115 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1116 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1120 priv->alloc_rxb_skb--;
1121 dev_kfree_skb_any(cmd.meta.u.skb);
1127 * iwl4965_commit_rxon - commit staging_rxon to hardware
1129 * The RXON command in staging_rxon is committed to the hardware and
1130 * the active_rxon structure is updated with the new data. This
1131 * function correctly transitions out of the RXON_ASSOC_MSK state if
1132 * a HW tune is required based on the RXON structure changes.
1134 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1136 /* cast away the const for active_rxon in this function */
1137 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1138 DECLARE_MAC_BUF(mac);
1141 if (!iwl4965_is_alive(priv))
1144 /* always get timestamp with Rx frame */
1145 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1147 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1149 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1153 /* If we don't need to send a full RXON, we can use
1154 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1155 * and other flags for the current radio configuration. */
1156 if (!iwl4965_full_rxon_required(priv)) {
1157 rc = iwl4965_send_rxon_assoc(priv);
1159 IWL_ERROR("Error setting RXON_ASSOC "
1160 "configuration (%d).\n", rc);
1164 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1169 /* station table will be cleared */
1170 priv->assoc_station_added = 0;
1172 #ifdef CONFIG_IWL4965_SENSITIVITY
1173 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1174 if (!priv->error_recovering)
1175 priv->start_calib = 0;
1177 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1178 #endif /* CONFIG_IWL4965_SENSITIVITY */
1180 /* If we are currently associated and the new config requires
1181 * an RXON_ASSOC and the new config wants the associated mask enabled,
1182 * we must clear the associated from the active configuration
1183 * before we apply the new config */
1184 if (iwl4965_is_associated(priv) &&
1185 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1186 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1187 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1189 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1190 sizeof(struct iwl4965_rxon_cmd),
1191 &priv->active_rxon);
1193 /* If the mask clearing failed then we set
1194 * active_rxon back to what it was previously */
1196 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1197 IWL_ERROR("Error clearing ASSOC_MSK on current "
1198 "configuration (%d).\n", rc);
1203 IWL_DEBUG_INFO("Sending RXON\n"
1204 "* with%s RXON_FILTER_ASSOC_MSK\n"
1207 ((priv->staging_rxon.filter_flags &
1208 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1209 le16_to_cpu(priv->staging_rxon.channel),
1210 print_mac(mac, priv->staging_rxon.bssid_addr));
1212 /* Apply the new configuration */
1213 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1214 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1216 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1220 iwl4965_clear_stations_table(priv);
1222 #ifdef CONFIG_IWL4965_SENSITIVITY
1223 if (!priv->error_recovering)
1224 priv->start_calib = 0;
1226 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1227 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1228 #endif /* CONFIG_IWL4965_SENSITIVITY */
1230 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1232 /* If we issue a new RXON command which required a tune then we must
1233 * send a new TXPOWER command or we won't be able to Tx any frames */
1234 rc = iwl4965_hw_reg_send_txpower(priv);
1236 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1240 /* Add the broadcast address so we can send broadcast frames */
1241 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1242 IWL_INVALID_STATION) {
1243 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1247 /* If we have set the ASSOC_MSK and we are in BSS mode then
1248 * add the IWL_AP_ID to the station rate table */
1249 if (iwl4965_is_associated(priv) &&
1250 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1251 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1252 == IWL_INVALID_STATION) {
1253 IWL_ERROR("Error adding AP address for transmit.\n");
1256 priv->assoc_station_added = 1;
1262 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1264 struct iwl4965_bt_cmd bt_cmd = {
1272 return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1273 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1276 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1279 struct iwl4965_rx_packet *res;
1280 struct iwl4965_host_cmd cmd = {
1281 .id = REPLY_SCAN_ABORT_CMD,
1282 .meta.flags = CMD_WANT_SKB,
1285 /* If there isn't a scan actively going on in the hardware
1286 * then we are in between scan bands and not actually
1287 * actively scanning, so don't send the abort command */
1288 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1289 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1293 rc = iwl4965_send_cmd_sync(priv, &cmd);
1295 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1299 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1300 if (res->u.status != CAN_ABORT_STATUS) {
1301 /* The scan abort will return 1 for success or
1302 * 2 for "failure". A failure condition can be
1303 * due to simply not being in an active scan which
1304 * can occur if we send the scan abort before we
1305 * the microcode has notified us that a scan is
1307 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1308 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1309 clear_bit(STATUS_SCAN_HW, &priv->status);
1312 dev_kfree_skb_any(cmd.meta.u.skb);
1317 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1318 struct iwl4965_cmd *cmd,
1319 struct sk_buff *skb)
1327 * Use: Sets the device's internal card state to enable, disable, or halt
1329 * When in the 'enable' state the card operates as normal.
1330 * When in the 'disable' state, the card enters into a low power mode.
1331 * When in the 'halt' state, the card is shut down and must be fully
1332 * restarted to come back on.
1334 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1336 struct iwl4965_host_cmd cmd = {
1337 .id = REPLY_CARD_STATE_CMD,
1340 .meta.flags = meta_flag,
1343 if (meta_flag & CMD_ASYNC)
1344 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1346 return iwl4965_send_cmd(priv, &cmd);
1349 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1350 struct iwl4965_cmd *cmd, struct sk_buff *skb)
1352 struct iwl4965_rx_packet *res = NULL;
1355 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1359 res = (struct iwl4965_rx_packet *)skb->data;
1360 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1361 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1366 switch (res->u.add_sta.status) {
1367 case ADD_STA_SUCCESS_MSK:
1373 /* We didn't cache the SKB; let the caller free it */
1377 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1378 struct iwl4965_addsta_cmd *sta, u8 flags)
1380 struct iwl4965_rx_packet *res = NULL;
1382 struct iwl4965_host_cmd cmd = {
1383 .id = REPLY_ADD_STA,
1384 .len = sizeof(struct iwl4965_addsta_cmd),
1385 .meta.flags = flags,
1389 if (flags & CMD_ASYNC)
1390 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1392 cmd.meta.flags |= CMD_WANT_SKB;
1394 rc = iwl4965_send_cmd(priv, &cmd);
1396 if (rc || (flags & CMD_ASYNC))
1399 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1400 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1401 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1407 switch (res->u.add_sta.status) {
1408 case ADD_STA_SUCCESS_MSK:
1409 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1413 IWL_WARNING("REPLY_ADD_STA failed\n");
1418 priv->alloc_rxb_skb--;
1419 dev_kfree_skb_any(cmd.meta.u.skb);
1424 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1425 struct ieee80211_key_conf *keyconf,
1428 unsigned long flags;
1429 __le16 key_flags = 0;
1431 switch (keyconf->alg) {
1433 key_flags |= STA_KEY_FLG_CCMP;
1434 key_flags |= cpu_to_le16(
1435 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1436 key_flags &= ~STA_KEY_FLG_INVALID;
1443 spin_lock_irqsave(&priv->sta_lock, flags);
1444 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1445 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1446 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1449 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1451 priv->stations[sta_id].sta.key.key_flags = key_flags;
1452 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1453 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1455 spin_unlock_irqrestore(&priv->sta_lock, flags);
1457 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1458 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1462 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1464 unsigned long flags;
1466 spin_lock_irqsave(&priv->sta_lock, flags);
1467 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1468 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1469 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1470 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1471 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1472 spin_unlock_irqrestore(&priv->sta_lock, flags);
1474 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1475 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1479 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1481 struct list_head *element;
1483 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1484 priv->frames_count);
1486 while (!list_empty(&priv->free_frames)) {
1487 element = priv->free_frames.next;
1489 kfree(list_entry(element, struct iwl4965_frame, list));
1490 priv->frames_count--;
1493 if (priv->frames_count) {
1494 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1495 priv->frames_count);
1496 priv->frames_count = 0;
1500 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1502 struct iwl4965_frame *frame;
1503 struct list_head *element;
1504 if (list_empty(&priv->free_frames)) {
1505 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1507 IWL_ERROR("Could not allocate frame!\n");
1511 priv->frames_count++;
1515 element = priv->free_frames.next;
1517 return list_entry(element, struct iwl4965_frame, list);
1520 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1522 memset(frame, 0, sizeof(*frame));
1523 list_add(&frame->list, &priv->free_frames);
1526 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1527 struct ieee80211_hdr *hdr,
1528 const u8 *dest, int left)
1531 if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1532 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1533 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1536 if (priv->ibss_beacon->len > left)
1539 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1541 return priv->ibss_beacon->len;
1544 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1548 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1549 i = iwl4965_rates[i].next_ieee) {
1550 if (rate_mask & (1 << i))
1551 return iwl4965_rates[i].plcp;
1554 return IWL_RATE_INVALID;
1557 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1559 struct iwl4965_frame *frame;
1560 unsigned int frame_size;
1564 frame = iwl4965_get_free_frame(priv);
1567 IWL_ERROR("Could not obtain free frame buffer for beacon "
1572 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1573 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1575 if (rate == IWL_INVALID_RATE)
1576 rate = IWL_RATE_6M_PLCP;
1578 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1579 if (rate == IWL_INVALID_RATE)
1580 rate = IWL_RATE_1M_PLCP;
1583 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1585 rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1588 iwl4965_free_frame(priv, frame);
1593 /******************************************************************************
1595 * EEPROM related functions
1597 ******************************************************************************/
1599 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1601 memcpy(mac, priv->eeprom.mac_address, 6);
1604 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1606 iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1607 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1611 * iwl4965_eeprom_init - read EEPROM contents
1613 * Load the EEPROM contents from adapter into priv->eeprom
1615 * NOTE: This routine uses the non-debug IO access functions.
1617 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1619 u16 *e = (u16 *)&priv->eeprom;
1620 u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1622 int sz = sizeof(priv->eeprom);
1627 /* The EEPROM structure has several padding buffers within it
1628 * and when adding new EEPROM maps is subject to programmer errors
1629 * which may be very difficult to identify without explicitly
1630 * checking the resulting size of the eeprom map. */
1631 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1633 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1634 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1638 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1639 rc = iwl4965_eeprom_acquire_semaphore(priv);
1641 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1645 /* eeprom is an array of 16bit values */
1646 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1647 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1648 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1650 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1651 i += IWL_EEPROM_ACCESS_DELAY) {
1652 r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1653 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1655 udelay(IWL_EEPROM_ACCESS_DELAY);
1658 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1659 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1663 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1668 iwl4965_eeprom_release_semaphore(priv);
1672 /******************************************************************************
1674 * Misc. internal state and helper functions
1676 ******************************************************************************/
1678 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1680 if (priv->hw_setting.shared_virt)
1681 pci_free_consistent(priv->pci_dev,
1682 sizeof(struct iwl4965_shared),
1683 priv->hw_setting.shared_virt,
1684 priv->hw_setting.shared_phys);
1688 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1690 * return : set the bit for each supported rate insert in ie
1692 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1693 u16 basic_rate, int *left)
1695 u16 ret_rates = 0, bit;
1700 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1701 if (bit & supported_rate) {
1703 rates[*cnt] = iwl4965_rates[i].ieee |
1704 ((bit & basic_rate) ? 0x80 : 0x00);
1708 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1717 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1719 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1720 enum ieee80211_band band,
1721 struct ieee80211_mgmt *frame,
1722 int left, int is_direct)
1726 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1727 #ifdef CONFIG_IWL4965_HT
1728 const struct ieee80211_supported_band *sband =
1729 iwl4965_get_hw_mode(priv, band);
1730 #endif /* CONFIG_IWL4965_HT */
1732 /* Make sure there is enough space for the probe request,
1733 * two mandatory IEs and the data */
1739 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1740 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1741 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1742 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1743 frame->seq_ctrl = 0;
1745 /* fill in our indirect SSID IE */
1752 pos = &(frame->u.probe_req.variable[0]);
1753 *pos++ = WLAN_EID_SSID;
1756 /* fill in our direct SSID IE... */
1759 left -= 2 + priv->essid_len;
1762 /* ... fill it in... */
1763 *pos++ = WLAN_EID_SSID;
1764 *pos++ = priv->essid_len;
1765 memcpy(pos, priv->essid, priv->essid_len);
1766 pos += priv->essid_len;
1767 len += 2 + priv->essid_len;
1770 /* fill in supported rate */
1776 /* ... fill it in... */
1777 *pos++ = WLAN_EID_SUPP_RATES;
1780 /* exclude 60M rate */
1781 active_rates = priv->rates_mask;
1782 active_rates &= ~IWL_RATE_60M_MASK;
1784 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1786 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1787 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1788 active_rate_basic, &left);
1789 active_rates &= ~ret_rates;
1791 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1792 active_rate_basic, &left);
1793 active_rates &= ~ret_rates;
1797 if (active_rates == 0)
1800 /* fill in supported extended rate */
1805 /* ... fill it in... */
1806 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1808 iwl4965_supported_rate_to_ie(pos, active_rates,
1809 active_rate_basic, &left);
1813 #ifdef CONFIG_IWL4965_HT
1814 if (sband && sband->ht_info.ht_supported) {
1815 struct ieee80211_ht_cap *ht_cap;
1817 *pos++ = WLAN_EID_HT_CAPABILITY;
1818 *pos++ = sizeof(struct ieee80211_ht_cap);
1819 ht_cap = (struct ieee80211_ht_cap *)pos;
1820 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1821 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1822 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1823 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1824 ((sband->ht_info.ampdu_density << 2) &
1825 IEEE80211_HT_CAP_AMPDU_DENSITY);
1826 len += 2 + sizeof(struct ieee80211_ht_cap);
1828 #endif /*CONFIG_IWL4965_HT */
1837 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1838 struct iwl4965_qosparam_cmd *qos)
1841 return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1842 sizeof(struct iwl4965_qosparam_cmd), qos);
1845 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1851 unsigned long flags;
1854 spin_lock_irqsave(&priv->lock, flags);
1855 priv->qos_data.qos_active = 0;
1857 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1858 if (priv->qos_data.qos_enable)
1859 priv->qos_data.qos_active = 1;
1860 if (!(priv->active_rate & 0xfff0)) {
1864 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1865 if (priv->qos_data.qos_enable)
1866 priv->qos_data.qos_active = 1;
1867 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1872 if (priv->qos_data.qos_active)
1875 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1876 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1877 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1878 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1879 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1881 if (priv->qos_data.qos_active) {
1883 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1884 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1885 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1886 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1887 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1890 priv->qos_data.def_qos_parm.ac[i].cw_min =
1891 cpu_to_le16((cw_min + 1) / 2 - 1);
1892 priv->qos_data.def_qos_parm.ac[i].cw_max =
1893 cpu_to_le16(cw_max);
1894 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1896 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1899 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1901 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1904 priv->qos_data.def_qos_parm.ac[i].cw_min =
1905 cpu_to_le16((cw_min + 1) / 4 - 1);
1906 priv->qos_data.def_qos_parm.ac[i].cw_max =
1907 cpu_to_le16((cw_max + 1) / 2 - 1);
1908 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1909 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1911 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1914 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1917 for (i = 1; i < 4; i++) {
1918 priv->qos_data.def_qos_parm.ac[i].cw_min =
1919 cpu_to_le16(cw_min);
1920 priv->qos_data.def_qos_parm.ac[i].cw_max =
1921 cpu_to_le16(cw_max);
1922 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1923 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1924 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1927 IWL_DEBUG_QOS("set QoS to default \n");
1929 spin_unlock_irqrestore(&priv->lock, flags);
1932 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
1934 unsigned long flags;
1936 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1939 if (!priv->qos_data.qos_enable)
1942 spin_lock_irqsave(&priv->lock, flags);
1943 priv->qos_data.def_qos_parm.qos_flags = 0;
1945 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1946 !priv->qos_data.qos_cap.q_AP.txop_request)
1947 priv->qos_data.def_qos_parm.qos_flags |=
1948 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1949 if (priv->qos_data.qos_active)
1950 priv->qos_data.def_qos_parm.qos_flags |=
1951 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1953 #ifdef CONFIG_IWL4965_HT
1954 if (priv->current_ht_config.is_ht)
1955 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1956 #endif /* CONFIG_IWL4965_HT */
1958 spin_unlock_irqrestore(&priv->lock, flags);
1960 if (force || iwl4965_is_associated(priv)) {
1961 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1962 priv->qos_data.qos_active,
1963 priv->qos_data.def_qos_parm.qos_flags);
1965 iwl4965_send_qos_params_command(priv,
1966 &(priv->qos_data.def_qos_parm));
1971 * Power management (not Tx power!) functions
1973 #define MSEC_TO_USEC 1024
1975 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1976 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1977 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1978 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1979 __constant_cpu_to_le32(X1), \
1980 __constant_cpu_to_le32(X2), \
1981 __constant_cpu_to_le32(X3), \
1982 __constant_cpu_to_le32(X4)}
1985 /* default power management (not Tx power) table values */
1987 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1988 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1989 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1990 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1991 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1992 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1993 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1997 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1998 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1999 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2000 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2001 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2002 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2003 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2004 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2005 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2006 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2007 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2010 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2013 struct iwl4965_power_mgr *pow_data;
2014 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2017 IWL_DEBUG_POWER("Initialize power \n");
2019 pow_data = &(priv->power_data);
2021 memset(pow_data, 0, sizeof(*pow_data));
2023 pow_data->active_index = IWL_POWER_RANGE_0;
2024 pow_data->dtim_val = 0xffff;
2026 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2027 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2029 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2033 struct iwl4965_powertable_cmd *cmd;
2035 IWL_DEBUG_POWER("adjust power command flags\n");
2037 for (i = 0; i < IWL_POWER_AC; i++) {
2038 cmd = &pow_data->pwr_range_0[i].cmd;
2041 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2043 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2049 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2050 struct iwl4965_powertable_cmd *cmd, u32 mode)
2055 struct iwl4965_power_vec_entry *range;
2057 struct iwl4965_power_mgr *pow_data;
2059 if (mode > IWL_POWER_INDEX_5) {
2060 IWL_DEBUG_POWER("Error invalid power mode \n");
2063 pow_data = &(priv->power_data);
2065 if (pow_data->active_index == IWL_POWER_RANGE_0)
2066 range = &pow_data->pwr_range_0[0];
2068 range = &pow_data->pwr_range_1[1];
2070 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2072 #ifdef IWL_MAC80211_DISABLE
2073 if (priv->assoc_network != NULL) {
2074 unsigned long flags;
2076 period = priv->assoc_network->tim.tim_period;
2078 #endif /*IWL_MAC80211_DISABLE */
2079 skip = range[mode].no_dtim;
2088 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2090 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2091 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2092 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2095 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2096 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2097 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2100 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2101 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2102 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2103 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2104 le32_to_cpu(cmd->sleep_interval[0]),
2105 le32_to_cpu(cmd->sleep_interval[1]),
2106 le32_to_cpu(cmd->sleep_interval[2]),
2107 le32_to_cpu(cmd->sleep_interval[3]),
2108 le32_to_cpu(cmd->sleep_interval[4]));
2113 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2115 u32 uninitialized_var(final_mode);
2117 struct iwl4965_powertable_cmd cmd;
2119 /* If on battery, set to 3,
2120 * if plugged into AC power, set to CAM ("continuously aware mode"),
2121 * else user level */
2123 case IWL_POWER_BATTERY:
2124 final_mode = IWL_POWER_INDEX_3;
2127 final_mode = IWL_POWER_MODE_CAM;
2134 cmd.keep_alive_beacons = 0;
2136 iwl4965_update_power_cmd(priv, &cmd, final_mode);
2138 rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2140 if (final_mode == IWL_POWER_MODE_CAM)
2141 clear_bit(STATUS_POWER_PMI, &priv->status);
2143 set_bit(STATUS_POWER_PMI, &priv->status);
2148 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2150 /* Filter incoming packets to determine if they are targeted toward
2151 * this network, discarding packets coming from ourselves */
2152 switch (priv->iw_mode) {
2153 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2154 /* packets from our adapter are dropped (echo) */
2155 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2157 /* {broad,multi}cast packets to our IBSS go through */
2158 if (is_multicast_ether_addr(header->addr1))
2159 return !compare_ether_addr(header->addr3, priv->bssid);
2160 /* packets to our adapter go through */
2161 return !compare_ether_addr(header->addr1, priv->mac_addr);
2162 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2163 /* packets from our adapter are dropped (echo) */
2164 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2166 /* {broad,multi}cast packets to our BSS go through */
2167 if (is_multicast_ether_addr(header->addr1))
2168 return !compare_ether_addr(header->addr2, priv->bssid);
2169 /* packets to our adapter go through */
2170 return !compare_ether_addr(header->addr1, priv->mac_addr);
2176 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2178 static const char *iwl4965_get_tx_fail_reason(u32 status)
2180 switch (status & TX_STATUS_MSK) {
2181 case TX_STATUS_SUCCESS:
2183 TX_STATUS_ENTRY(SHORT_LIMIT);
2184 TX_STATUS_ENTRY(LONG_LIMIT);
2185 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2186 TX_STATUS_ENTRY(MGMNT_ABORT);
2187 TX_STATUS_ENTRY(NEXT_FRAG);
2188 TX_STATUS_ENTRY(LIFE_EXPIRE);
2189 TX_STATUS_ENTRY(DEST_PS);
2190 TX_STATUS_ENTRY(ABORTED);
2191 TX_STATUS_ENTRY(BT_RETRY);
2192 TX_STATUS_ENTRY(STA_INVALID);
2193 TX_STATUS_ENTRY(FRAG_DROPPED);
2194 TX_STATUS_ENTRY(TID_DISABLE);
2195 TX_STATUS_ENTRY(FRAME_FLUSHED);
2196 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2197 TX_STATUS_ENTRY(TX_LOCKED);
2198 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2205 * iwl4965_scan_cancel - Cancel any currently executing HW scan
2207 * NOTE: priv->mutex is not required before calling this function
2209 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2211 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2212 clear_bit(STATUS_SCANNING, &priv->status);
2216 if (test_bit(STATUS_SCANNING, &priv->status)) {
2217 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2218 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2219 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2220 queue_work(priv->workqueue, &priv->abort_scan);
2223 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2225 return test_bit(STATUS_SCANNING, &priv->status);
2232 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2233 * @ms: amount of time to wait (in milliseconds) for scan to abort
2235 * NOTE: priv->mutex must be held before calling this function
2237 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2239 unsigned long now = jiffies;
2242 ret = iwl4965_scan_cancel(priv);
2244 mutex_unlock(&priv->mutex);
2245 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2246 test_bit(STATUS_SCANNING, &priv->status))
2248 mutex_lock(&priv->mutex);
2250 return test_bit(STATUS_SCANNING, &priv->status);
2256 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2258 /* Reset ieee stats */
2260 /* We don't reset the net_device_stats (ieee->stats) on
2263 priv->last_seq_num = -1;
2264 priv->last_frag_num = -1;
2265 priv->last_packet_time = 0;
2267 iwl4965_scan_cancel(priv);
2270 #define MAX_UCODE_BEACON_INTERVAL 4096
2271 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2273 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2276 u16 beacon_factor = 0;
2279 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2280 / MAX_UCODE_BEACON_INTERVAL;
2281 new_val = beacon_val / beacon_factor;
2283 return cpu_to_le16(new_val);
2286 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2288 u64 interval_tm_unit;
2290 unsigned long flags;
2291 struct ieee80211_conf *conf = NULL;
2294 conf = ieee80211_get_hw_conf(priv->hw);
2296 spin_lock_irqsave(&priv->lock, flags);
2297 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2298 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2300 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2302 tsf = priv->timestamp1;
2303 tsf = ((tsf << 32) | priv->timestamp0);
2305 beacon_int = priv->beacon_int;
2306 spin_unlock_irqrestore(&priv->lock, flags);
2308 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2309 if (beacon_int == 0) {
2310 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2311 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2313 priv->rxon_timing.beacon_interval =
2314 cpu_to_le16(beacon_int);
2315 priv->rxon_timing.beacon_interval =
2316 iwl4965_adjust_beacon_interval(
2317 le16_to_cpu(priv->rxon_timing.beacon_interval));
2320 priv->rxon_timing.atim_window = 0;
2322 priv->rxon_timing.beacon_interval =
2323 iwl4965_adjust_beacon_interval(conf->beacon_int);
2324 /* TODO: we need to get atim_window from upper stack
2325 * for now we set to 0 */
2326 priv->rxon_timing.atim_window = 0;
2330 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2331 result = do_div(tsf, interval_tm_unit);
2332 priv->rxon_timing.beacon_init_val =
2333 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2336 ("beacon interval %d beacon timer %d beacon tim %d\n",
2337 le16_to_cpu(priv->rxon_timing.beacon_interval),
2338 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2339 le16_to_cpu(priv->rxon_timing.atim_window));
2342 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2344 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2345 IWL_ERROR("APs don't scan.\n");
2349 if (!iwl4965_is_ready_rf(priv)) {
2350 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2354 if (test_bit(STATUS_SCANNING, &priv->status)) {
2355 IWL_DEBUG_SCAN("Scan already in progress.\n");
2359 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2360 IWL_DEBUG_SCAN("Scan request while abort pending. "
2365 IWL_DEBUG_INFO("Starting scan...\n");
2366 priv->scan_bands = 2;
2367 set_bit(STATUS_SCANNING, &priv->status);
2368 priv->scan_start = jiffies;
2369 priv->scan_pass_start = priv->scan_start;
2371 queue_work(priv->workqueue, &priv->request_scan);
2376 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2378 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2381 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2383 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2388 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv,
2389 enum ieee80211_band band)
2391 if (band == IEEE80211_BAND_5GHZ) {
2392 priv->staging_rxon.flags &=
2393 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2394 | RXON_FLG_CCK_MSK);
2395 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2397 /* Copied from iwl4965_bg_post_associate() */
2398 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2399 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2401 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2403 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2404 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2406 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2407 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2408 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2413 * initialize rxon structure with default values from eeprom
2415 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2417 const struct iwl4965_channel_info *ch_info;
2419 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2421 switch (priv->iw_mode) {
2422 case IEEE80211_IF_TYPE_AP:
2423 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2426 case IEEE80211_IF_TYPE_STA:
2427 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2428 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2431 case IEEE80211_IF_TYPE_IBSS:
2432 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2433 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2434 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2435 RXON_FILTER_ACCEPT_GRP_MSK;
2438 case IEEE80211_IF_TYPE_MNTR:
2439 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2440 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2441 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2446 /* TODO: Figure out when short_preamble would be set and cache from
2448 if (!hw_to_local(priv->hw)->short_preamble)
2449 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2451 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2454 ch_info = iwl4965_get_channel_info(priv, priv->band,
2455 le16_to_cpu(priv->staging_rxon.channel));
2458 ch_info = &priv->channel_info[0];
2461 * in some case A channels are all non IBSS
2462 * in this case force B/G channel
2464 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2465 !(is_channel_ibss(ch_info)))
2466 ch_info = &priv->channel_info[0];
2468 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2469 priv->band = ch_info->band;
2471 iwl4965_set_flags_for_phymode(priv, priv->band);
2473 priv->staging_rxon.ofdm_basic_rates =
2474 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2475 priv->staging_rxon.cck_basic_rates =
2476 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2478 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2479 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2480 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2481 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2482 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2483 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2484 iwl4965_set_rxon_chain(priv);
2487 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2489 if (mode == IEEE80211_IF_TYPE_IBSS) {
2490 const struct iwl4965_channel_info *ch_info;
2492 ch_info = iwl4965_get_channel_info(priv,
2494 le16_to_cpu(priv->staging_rxon.channel));
2496 if (!ch_info || !is_channel_ibss(ch_info)) {
2497 IWL_ERROR("channel %d not IBSS channel\n",
2498 le16_to_cpu(priv->staging_rxon.channel));
2503 priv->iw_mode = mode;
2505 iwl4965_connection_init_rx_config(priv);
2506 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2508 iwl4965_clear_stations_table(priv);
2510 /* dont commit rxon if rf-kill is on*/
2511 if (!iwl4965_is_ready_rf(priv))
2514 cancel_delayed_work(&priv->scan_check);
2515 if (iwl4965_scan_cancel_timeout(priv, 100)) {
2516 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2517 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2521 iwl4965_commit_rxon(priv);
2526 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2527 struct ieee80211_tx_control *ctl,
2528 struct iwl4965_cmd *cmd,
2529 struct sk_buff *skb_frag,
2532 struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2534 switch (keyinfo->alg) {
2536 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2537 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2538 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2543 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2546 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2549 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2554 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2555 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2557 if (keyinfo->keylen == 13)
2558 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2560 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2562 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2563 "with key %d\n", ctl->key_idx);
2567 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2573 * handle build REPLY_TX command notification.
2575 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2576 struct iwl4965_cmd *cmd,
2577 struct ieee80211_tx_control *ctrl,
2578 struct ieee80211_hdr *hdr,
2579 int is_unicast, u8 std_id)
2582 u16 fc = le16_to_cpu(hdr->frame_control);
2583 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2585 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2586 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2587 tx_flags |= TX_CMD_FLG_ACK_MSK;
2588 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2589 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2590 if (ieee80211_is_probe_response(fc) &&
2591 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2592 tx_flags |= TX_CMD_FLG_TSF_MSK;
2594 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2595 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2598 if (ieee80211_is_back_request(fc))
2599 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2602 cmd->cmd.tx.sta_id = std_id;
2603 if (ieee80211_get_morefrag(hdr))
2604 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2606 qc = ieee80211_get_qos_ctrl(hdr);
2608 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2609 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2611 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2613 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2614 tx_flags |= TX_CMD_FLG_RTS_MSK;
2615 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2616 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2617 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2618 tx_flags |= TX_CMD_FLG_CTS_MSK;
2621 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2622 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2624 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2625 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2626 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2627 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2628 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2630 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2632 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2634 cmd->cmd.tx.driver_txop = 0;
2635 cmd->cmd.tx.tx_flags = tx_flags;
2636 cmd->cmd.tx.next_frame_len = 0;
2640 * iwl4965_get_sta_id - Find station's index within station table
2642 * If new IBSS station, create new entry in station table
2644 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2645 struct ieee80211_hdr *hdr)
2648 u16 fc = le16_to_cpu(hdr->frame_control);
2649 DECLARE_MAC_BUF(mac);
2651 /* If this frame is broadcast or management, use broadcast station id */
2652 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2653 is_multicast_ether_addr(hdr->addr1))
2654 return priv->hw_setting.bcast_sta_id;
2656 switch (priv->iw_mode) {
2658 /* If we are a client station in a BSS network, use the special
2659 * AP station entry (that's the only station we communicate with) */
2660 case IEEE80211_IF_TYPE_STA:
2663 /* If we are an AP, then find the station, or use BCAST */
2664 case IEEE80211_IF_TYPE_AP:
2665 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2666 if (sta_id != IWL_INVALID_STATION)
2668 return priv->hw_setting.bcast_sta_id;
2670 /* If this frame is going out to an IBSS network, find the station,
2671 * or create a new station table entry */
2672 case IEEE80211_IF_TYPE_IBSS:
2673 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2674 if (sta_id != IWL_INVALID_STATION)
2677 /* Create new station table entry */
2678 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2679 0, CMD_ASYNC, NULL);
2681 if (sta_id != IWL_INVALID_STATION)
2684 IWL_DEBUG_DROP("Station %s not in station map. "
2685 "Defaulting to broadcast...\n",
2686 print_mac(mac, hdr->addr1));
2687 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2688 return priv->hw_setting.bcast_sta_id;
2691 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2692 return priv->hw_setting.bcast_sta_id;
2697 * start REPLY_TX command process
2699 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2700 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2702 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2703 struct iwl4965_tfd_frame *tfd;
2705 int txq_id = ctl->queue;
2706 struct iwl4965_tx_queue *txq = NULL;
2707 struct iwl4965_queue *q = NULL;
2708 dma_addr_t phys_addr;
2709 dma_addr_t txcmd_phys;
2710 dma_addr_t scratch_phys;
2711 struct iwl4965_cmd *out_cmd = NULL;
2712 u16 len, idx, len_org;
2713 u8 id, hdr_len, unicast;
2718 u8 wait_write_ptr = 0;
2719 unsigned long flags;
2722 spin_lock_irqsave(&priv->lock, flags);
2723 if (iwl4965_is_rfkill(priv)) {
2724 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2729 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2733 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2734 IWL_ERROR("ERROR: No TX rate available.\n");
2738 unicast = !is_multicast_ether_addr(hdr->addr1);
2741 fc = le16_to_cpu(hdr->frame_control);
2743 #ifdef CONFIG_IWL4965_DEBUG
2744 if (ieee80211_is_auth(fc))
2745 IWL_DEBUG_TX("Sending AUTH frame\n");
2746 else if (ieee80211_is_assoc_request(fc))
2747 IWL_DEBUG_TX("Sending ASSOC frame\n");
2748 else if (ieee80211_is_reassoc_request(fc))
2749 IWL_DEBUG_TX("Sending REASSOC frame\n");
2752 /* drop all data frame if we are not associated */
2753 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2754 (!iwl4965_is_associated(priv) ||
2755 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2756 !priv->assoc_station_added)) {
2757 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2761 spin_unlock_irqrestore(&priv->lock, flags);
2763 hdr_len = ieee80211_get_hdrlen(fc);
2765 /* Find (or create) index into station table for destination station */
2766 sta_id = iwl4965_get_sta_id(priv, hdr);
2767 if (sta_id == IWL_INVALID_STATION) {
2768 DECLARE_MAC_BUF(mac);
2770 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2771 print_mac(mac, hdr->addr1));
2775 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2777 qc = ieee80211_get_qos_ctrl(hdr);
2779 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2780 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2782 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2784 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2786 #ifdef CONFIG_IWL4965_HT
2787 /* aggregation is on for this <sta,tid> */
2788 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2789 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2790 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2791 #endif /* CONFIG_IWL4965_HT */
2794 /* Descriptor for chosen Tx queue */
2795 txq = &priv->txq[txq_id];
2798 spin_lock_irqsave(&priv->lock, flags);
2800 /* Set up first empty TFD within this queue's circular TFD buffer */
2801 tfd = &txq->bd[q->write_ptr];
2802 memset(tfd, 0, sizeof(*tfd));
2803 control_flags = (u32 *) tfd;
2804 idx = get_cmd_index(q, q->write_ptr, 0);
2806 /* Set up driver data for this TFD */
2807 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2808 txq->txb[q->write_ptr].skb[0] = skb;
2809 memcpy(&(txq->txb[q->write_ptr].status.control),
2810 ctl, sizeof(struct ieee80211_tx_control));
2812 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2813 out_cmd = &txq->cmd[idx];
2814 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2815 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2818 * Set up the Tx-command (not MAC!) header.
2819 * Store the chosen Tx queue and TFD index within the sequence field;
2820 * after Tx, uCode's Tx response will return this value so driver can
2821 * locate the frame within the tx queue and do post-tx processing.
2823 out_cmd->hdr.cmd = REPLY_TX;
2824 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2825 INDEX_TO_SEQ(q->write_ptr)));
2827 /* Copy MAC header from skb into command buffer */
2828 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2831 * Use the first empty entry in this queue's command buffer array
2832 * to contain the Tx command and MAC header concatenated together
2833 * (payload data will be in another buffer).
2834 * Size of this varies, due to varying MAC header length.
2835 * If end is not dword aligned, we'll have 2 extra bytes at the end
2836 * of the MAC header (device reads on dword boundaries).
2837 * We'll tell device about this padding later.
2839 len = priv->hw_setting.tx_cmd_len +
2840 sizeof(struct iwl4965_cmd_header) + hdr_len;
2843 len = (len + 3) & ~3;
2850 /* Physical address of this Tx command's header (not MAC header!),
2851 * within command buffer array. */
2852 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2853 offsetof(struct iwl4965_cmd, hdr);
2855 /* Add buffer containing Tx command and MAC(!) header to TFD's
2857 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2859 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2860 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2862 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2863 * if any (802.11 null frames have no payload). */
2864 len = skb->len - hdr_len;
2866 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2867 len, PCI_DMA_TODEVICE);
2868 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2871 /* Tell 4965 about any 2-byte padding after MAC header */
2873 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2875 /* Total # bytes to be transmitted */
2876 len = (u16)skb->len;
2877 out_cmd->cmd.tx.len = cpu_to_le16(len);
2879 /* TODO need this for burst mode later on */
2880 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2882 /* set is_hcca to 0; it probably will never be implemented */
2883 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2885 scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2886 offsetof(struct iwl4965_tx_cmd, scratch);
2887 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2888 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2890 if (!ieee80211_get_morefrag(hdr)) {
2891 txq->need_update = 1;
2893 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2894 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2898 txq->need_update = 0;
2901 iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2902 sizeof(out_cmd->cmd.tx));
2904 iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2905 ieee80211_get_hdrlen(fc));
2907 /* Set up entry for this TFD in Tx byte-count array */
2908 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2910 /* Tell device the write index *just past* this latest filled TFD */
2911 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2912 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2913 spin_unlock_irqrestore(&priv->lock, flags);
2918 if ((iwl4965_queue_space(q) < q->high_mark)
2919 && priv->mac80211_registered) {
2920 if (wait_write_ptr) {
2921 spin_lock_irqsave(&priv->lock, flags);
2922 txq->need_update = 1;
2923 iwl4965_tx_queue_update_write_ptr(priv, txq);
2924 spin_unlock_irqrestore(&priv->lock, flags);
2927 ieee80211_stop_queue(priv->hw, ctl->queue);
2933 spin_unlock_irqrestore(&priv->lock, flags);
2938 static void iwl4965_set_rate(struct iwl4965_priv *priv)
2940 const struct ieee80211_supported_band *hw = NULL;
2941 struct ieee80211_rate *rate;
2944 hw = iwl4965_get_hw_mode(priv, priv->band);
2946 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2950 priv->active_rate = 0;
2951 priv->active_rate_basic = 0;
2953 for (i = 0; i < hw->n_bitrates; i++) {
2954 rate = &(hw->bitrates[i]);
2955 if (rate->hw_value < IWL_RATE_COUNT)
2956 priv->active_rate |= (1 << rate->hw_value);
2959 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2960 priv->active_rate, priv->active_rate_basic);
2963 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2964 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2967 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2968 priv->staging_rxon.cck_basic_rates =
2969 ((priv->active_rate_basic &
2970 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2972 priv->staging_rxon.cck_basic_rates =
2973 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2975 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2976 priv->staging_rxon.ofdm_basic_rates =
2977 ((priv->active_rate_basic &
2978 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2979 IWL_FIRST_OFDM_RATE) & 0xFF;
2981 priv->staging_rxon.ofdm_basic_rates =
2982 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2985 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
2987 unsigned long flags;
2989 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2992 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2993 disable_radio ? "OFF" : "ON");
2995 if (disable_radio) {
2996 iwl4965_scan_cancel(priv);
2997 /* FIXME: This is a workaround for AP */
2998 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2999 spin_lock_irqsave(&priv->lock, flags);
3000 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3001 CSR_UCODE_SW_BIT_RFKILL);
3002 spin_unlock_irqrestore(&priv->lock, flags);
3003 iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3004 set_bit(STATUS_RF_KILL_SW, &priv->status);
3009 spin_lock_irqsave(&priv->lock, flags);
3010 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3012 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3013 spin_unlock_irqrestore(&priv->lock, flags);
3018 spin_lock_irqsave(&priv->lock, flags);
3019 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3020 if (!iwl4965_grab_nic_access(priv))
3021 iwl4965_release_nic_access(priv);
3022 spin_unlock_irqrestore(&priv->lock, flags);
3024 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3025 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3026 "disabled by HW switch\n");
3030 queue_work(priv->workqueue, &priv->restart);
3034 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3035 u32 decrypt_res, struct ieee80211_rx_status *stats)
3038 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3040 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3043 if (!(fc & IEEE80211_FCTL_PROTECTED))
3046 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3047 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3048 case RX_RES_STATUS_SEC_TYPE_TKIP:
3049 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3050 RX_RES_STATUS_BAD_ICV_MIC)
3051 stats->flag |= RX_FLAG_MMIC_ERROR;
3052 case RX_RES_STATUS_SEC_TYPE_WEP:
3053 case RX_RES_STATUS_SEC_TYPE_CCMP:
3054 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3055 RX_RES_STATUS_DECRYPT_OK) {
3056 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3057 stats->flag |= RX_FLAG_DECRYPTED;
3067 #define IWL_PACKET_RETRY_TIME HZ
3069 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3071 u16 sc = le16_to_cpu(header->seq_ctrl);
3072 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3073 u16 frag = sc & IEEE80211_SCTL_FRAG;
3074 u16 *last_seq, *last_frag;
3075 unsigned long *last_time;
3077 switch (priv->iw_mode) {
3078 case IEEE80211_IF_TYPE_IBSS:{
3079 struct list_head *p;
3080 struct iwl4965_ibss_seq *entry = NULL;
3081 u8 *mac = header->addr2;
3082 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3084 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3085 entry = list_entry(p, struct iwl4965_ibss_seq, list);
3086 if (!compare_ether_addr(entry->mac, mac))
3089 if (p == &priv->ibss_mac_hash[index]) {
3090 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3092 IWL_ERROR("Cannot malloc new mac entry\n");
3095 memcpy(entry->mac, mac, ETH_ALEN);
3096 entry->seq_num = seq;
3097 entry->frag_num = frag;
3098 entry->packet_time = jiffies;
3099 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3102 last_seq = &entry->seq_num;
3103 last_frag = &entry->frag_num;
3104 last_time = &entry->packet_time;
3107 case IEEE80211_IF_TYPE_STA:
3108 last_seq = &priv->last_seq_num;
3109 last_frag = &priv->last_frag_num;
3110 last_time = &priv->last_packet_time;
3115 if ((*last_seq == seq) &&
3116 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3117 if (*last_frag == frag)
3119 if (*last_frag + 1 != frag)
3120 /* out-of-order fragment */
3126 *last_time = jiffies;
3133 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3135 #include "iwl-spectrum.h"
3137 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3138 #define BEACON_TIME_MASK_HIGH 0xFF000000
3139 #define TIME_UNIT 1024
3142 * extended beacon time format
3143 * time in usec will be changed into a 32-bit value in 8:24 format
3144 * the high 1 byte is the beacon counts
3145 * the lower 3 bytes is the time in usec within one beacon interval
3148 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3152 u32 interval = beacon_interval * 1024;
3154 if (!interval || !usec)
3157 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3158 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3160 return (quot << 24) + rem;
3163 /* base is usually what we get from ucode with each received frame,
3164 * the same as HW timer counter counting down
3167 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3169 u32 base_low = base & BEACON_TIME_MASK_LOW;
3170 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3171 u32 interval = beacon_interval * TIME_UNIT;
3172 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3173 (addon & BEACON_TIME_MASK_HIGH);
3175 if (base_low > addon_low)
3176 res += base_low - addon_low;
3177 else if (base_low < addon_low) {
3178 res += interval + base_low - addon_low;
3183 return cpu_to_le32(res);
3186 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3187 struct ieee80211_measurement_params *params,
3190 struct iwl4965_spectrum_cmd spectrum;
3191 struct iwl4965_rx_packet *res;
3192 struct iwl4965_host_cmd cmd = {
3193 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3194 .data = (void *)&spectrum,
3195 .meta.flags = CMD_WANT_SKB,
3197 u32 add_time = le64_to_cpu(params->start_time);
3199 int spectrum_resp_status;
3200 int duration = le16_to_cpu(params->duration);
3202 if (iwl4965_is_associated(priv))
3204 iwl4965_usecs_to_beacons(
3205 le64_to_cpu(params->start_time) - priv->last_tsf,
3206 le16_to_cpu(priv->rxon_timing.beacon_interval));
3208 memset(&spectrum, 0, sizeof(spectrum));
3210 spectrum.channel_count = cpu_to_le16(1);
3212 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3213 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3214 cmd.len = sizeof(spectrum);
3215 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3217 if (iwl4965_is_associated(priv))
3218 spectrum.start_time =
3219 iwl4965_add_beacon_time(priv->last_beacon_time,
3221 le16_to_cpu(priv->rxon_timing.beacon_interval));
3223 spectrum.start_time = 0;
3225 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3226 spectrum.channels[0].channel = params->channel;
3227 spectrum.channels[0].type = type;
3228 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3229 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3230 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3232 rc = iwl4965_send_cmd_sync(priv, &cmd);
3236 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3237 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3238 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3242 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3243 switch (spectrum_resp_status) {
3244 case 0: /* Command will be handled */
3245 if (res->u.spectrum.id != 0xff) {
3247 ("Replaced existing measurement: %d\n",
3248 res->u.spectrum.id);
3249 priv->measurement_status &= ~MEASUREMENT_READY;
3251 priv->measurement_status |= MEASUREMENT_ACTIVE;
3255 case 1: /* Command will not be handled */
3260 dev_kfree_skb_any(cmd.meta.u.skb);
3266 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3267 struct iwl4965_tx_info *tx_sta)
3270 tx_sta->status.ack_signal = 0;
3271 tx_sta->status.excessive_retries = 0;
3272 tx_sta->status.queue_length = 0;
3273 tx_sta->status.queue_number = 0;
3276 ieee80211_tx_status_irqsafe(priv->hw,
3277 tx_sta->skb[0], &(tx_sta->status));
3279 ieee80211_tx_status(priv->hw,
3280 tx_sta->skb[0], &(tx_sta->status));
3282 tx_sta->skb[0] = NULL;
3286 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3288 * When FW advances 'R' index, all entries between old and new 'R' index
3289 * need to be reclaimed. As result, some free space forms. If there is
3290 * enough free space (> low mark), wake the stack that feeds us.
3292 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3294 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3295 struct iwl4965_queue *q = &txq->q;
3298 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3299 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3300 "is out of range [0-%d] %d %d.\n", txq_id,
3301 index, q->n_bd, q->write_ptr, q->read_ptr);
3305 for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3306 q->read_ptr != index;
3307 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3308 if (txq_id != IWL_CMD_QUEUE_NUM) {
3309 iwl4965_txstatus_to_ieee(priv,
3310 &(txq->txb[txq->q.read_ptr]));
3311 iwl4965_hw_txq_free_tfd(priv, txq);
3312 } else if (nfreed > 1) {
3313 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3314 q->write_ptr, q->read_ptr);
3315 queue_work(priv->workqueue, &priv->restart);
3320 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3321 (txq_id != IWL_CMD_QUEUE_NUM) &&
3322 priv->mac80211_registered)
3323 ieee80211_wake_queue(priv->hw, txq_id); */
3329 static int iwl4965_is_tx_success(u32 status)
3331 status &= TX_STATUS_MSK;
3332 return (status == TX_STATUS_SUCCESS)
3333 || (status == TX_STATUS_DIRECT_DONE);
3336 /******************************************************************************
3338 * Generic RX handler implementations
3340 ******************************************************************************/
3341 #ifdef CONFIG_IWL4965_HT
3343 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3344 struct ieee80211_hdr *hdr)
3346 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3349 u8 *da = ieee80211_get_DA(hdr);
3350 return iwl4965_hw_find_station(priv, da);
3354 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3355 struct iwl4965_priv *priv, int txq_id, int idx)
3357 if (priv->txq[txq_id].txb[idx].skb[0])
3358 return (struct ieee80211_hdr *)priv->txq[txq_id].
3359 txb[idx].skb[0]->data;
3363 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3365 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3366 tx_resp->frame_count);
3367 return le32_to_cpu(*scd_ssn) & MAX_SN;
3372 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3374 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3375 struct iwl4965_ht_agg *agg,
3376 struct iwl4965_tx_resp_agg *tx_resp,
3380 struct agg_tx_status *frame_status = &tx_resp->status;
3381 struct ieee80211_tx_status *tx_status = NULL;
3382 struct ieee80211_hdr *hdr = NULL;
3387 if (agg->wait_for_ba)
3388 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3390 agg->frame_count = tx_resp->frame_count;
3391 agg->start_idx = start_idx;
3392 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3395 /* # frames attempted by Tx command */
3396 if (agg->frame_count == 1) {
3397 /* Only one frame was attempted; no block-ack will arrive */
3398 status = le16_to_cpu(frame_status[0].status);
3399 seq = le16_to_cpu(frame_status[0].sequence);
3400 idx = SEQ_TO_INDEX(seq);
3401 txq_id = SEQ_TO_QUEUE(seq);
3403 /* FIXME: code repetition */
3404 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3405 agg->frame_count, agg->start_idx, idx);
3407 tx_status = &(priv->txq[txq_id].txb[idx].status);
3408 tx_status->retry_count = tx_resp->failure_frame;
3409 tx_status->queue_number = status & 0xff;
3410 tx_status->queue_length = tx_resp->failure_rts;
3411 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3412 tx_status->flags = iwl4965_is_tx_success(status)?
3413 IEEE80211_TX_STATUS_ACK : 0;
3414 iwl4965_hwrate_to_tx_control(priv,
3415 le32_to_cpu(tx_resp->rate_n_flags),
3416 &tx_status->control);
3417 /* FIXME: code repetition end */
3419 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3420 status & 0xff, tx_resp->failure_frame);
3421 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3422 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3424 agg->wait_for_ba = 0;
3426 /* Two or more frames were attempted; expect block-ack */
3428 int start = agg->start_idx;
3430 /* Construct bit-map of pending frames within Tx window */
3431 for (i = 0; i < agg->frame_count; i++) {
3433 status = le16_to_cpu(frame_status[i].status);
3434 seq = le16_to_cpu(frame_status[i].sequence);
3435 idx = SEQ_TO_INDEX(seq);
3436 txq_id = SEQ_TO_QUEUE(seq);
3438 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3439 AGG_TX_STATE_ABORT_MSK))
3442 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3443 agg->frame_count, txq_id, idx);
3445 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3447 sc = le16_to_cpu(hdr->seq_ctrl);
3448 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3449 IWL_ERROR("BUG_ON idx doesn't match seq control"
3450 " idx=%d, seq_idx=%d, seq=%d\n",
3456 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3457 i, idx, SEQ_TO_SN(sc));
3461 sh = (start - idx) + 0xff;
3462 bitmap = bitmap << sh;
3465 } else if (sh < -64)
3466 sh = 0xff - (start - idx);
3470 bitmap = bitmap << sh;
3473 bitmap |= (1 << sh);
3474 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3475 start, (u32)(bitmap & 0xFFFFFFFF));
3478 agg->bitmap = bitmap;
3479 agg->start_idx = start;
3480 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3481 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3482 agg->frame_count, agg->start_idx,
3486 agg->wait_for_ba = 1;
3493 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3495 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3496 struct iwl4965_rx_mem_buffer *rxb)
3498 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3499 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3500 int txq_id = SEQ_TO_QUEUE(sequence);
3501 int index = SEQ_TO_INDEX(sequence);
3502 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3503 struct ieee80211_tx_status *tx_status;
3504 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3505 u32 status = le32_to_cpu(tx_resp->status);
3506 #ifdef CONFIG_IWL4965_HT
3507 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3508 struct ieee80211_hdr *hdr;
3512 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3513 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3514 "is out of range [0-%d] %d %d\n", txq_id,
3515 index, txq->q.n_bd, txq->q.write_ptr,
3520 #ifdef CONFIG_IWL4965_HT
3521 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3522 qc = ieee80211_get_qos_ctrl(hdr);
3525 tid = le16_to_cpu(*qc) & 0xf;
3527 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3528 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3529 IWL_ERROR("Station not known\n");
3533 if (txq->sched_retry) {
3534 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3535 struct iwl4965_ht_agg *agg = NULL;
3540 agg = &priv->stations[sta_id].tid[tid].agg;
3542 iwl4965_tx_status_reply_tx(priv, agg,
3543 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3545 if ((tx_resp->frame_count == 1) &&
3546 !iwl4965_is_tx_success(status)) {
3547 /* TODO: send BAR */
3550 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3552 index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3553 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3554 "%d index %d\n", scd_ssn , index);
3555 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3556 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3558 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3559 txq_id >= 0 && priv->mac80211_registered &&
3560 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3561 ieee80211_wake_queue(priv->hw, txq_id);
3563 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3566 #endif /* CONFIG_IWL4965_HT */
3567 tx_status = &(txq->txb[txq->q.read_ptr].status);
3569 tx_status->retry_count = tx_resp->failure_frame;
3570 tx_status->queue_number = status;
3571 tx_status->queue_length = tx_resp->bt_kill_count;
3572 tx_status->queue_length |= tx_resp->failure_rts;
3574 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3575 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3576 &tx_status->control);
3578 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3579 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3580 status, le32_to_cpu(tx_resp->rate_n_flags),
3581 tx_resp->failure_frame);
3583 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3585 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3586 #ifdef CONFIG_IWL4965_HT
3587 if (tid != MAX_TID_COUNT)
3588 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3589 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3591 priv->mac80211_registered)
3592 ieee80211_wake_queue(priv->hw, txq_id);
3593 if (tid != MAX_TID_COUNT)
3594 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3597 #ifdef CONFIG_IWL4965_HT
3599 #endif /* CONFIG_IWL4965_HT */
3601 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3602 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3606 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3607 struct iwl4965_rx_mem_buffer *rxb)
3609 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3610 struct iwl4965_alive_resp *palive;
3611 struct delayed_work *pwork;
3613 palive = &pkt->u.alive_frame;
3615 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3617 palive->is_valid, palive->ver_type,
3618 palive->ver_subtype);
3620 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3621 IWL_DEBUG_INFO("Initialization Alive received.\n");
3622 memcpy(&priv->card_alive_init,
3623 &pkt->u.alive_frame,
3624 sizeof(struct iwl4965_init_alive_resp));
3625 pwork = &priv->init_alive_start;
3627 IWL_DEBUG_INFO("Runtime Alive received.\n");
3628 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3629 sizeof(struct iwl4965_alive_resp));
3630 pwork = &priv->alive_start;
3633 /* We delay the ALIVE response by 5ms to
3634 * give the HW RF Kill time to activate... */
3635 if (palive->is_valid == UCODE_VALID_OK)
3636 queue_delayed_work(priv->workqueue, pwork,
3637 msecs_to_jiffies(5));
3639 IWL_WARNING("uCode did not respond OK.\n");
3642 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3643 struct iwl4965_rx_mem_buffer *rxb)
3645 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3647 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3651 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3652 struct iwl4965_rx_mem_buffer *rxb)
3654 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3656 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3657 "seq 0x%04X ser 0x%08X\n",
3658 le32_to_cpu(pkt->u.err_resp.error_type),
3659 get_cmd_string(pkt->u.err_resp.cmd_id),
3660 pkt->u.err_resp.cmd_id,
3661 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3662 le32_to_cpu(pkt->u.err_resp.error_info));
3665 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3667 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3669 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3670 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3671 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3672 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3673 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3674 rxon->channel = csa->channel;
3675 priv->staging_rxon.channel = csa->channel;
3678 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3679 struct iwl4965_rx_mem_buffer *rxb)
3681 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3682 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3683 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3685 if (!report->state) {
3686 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3687 "Spectrum Measure Notification: Start\n");
3691 memcpy(&priv->measure_report, report, sizeof(*report));
3692 priv->measurement_status |= MEASUREMENT_READY;
3696 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3697 struct iwl4965_rx_mem_buffer *rxb)
3699 #ifdef CONFIG_IWL4965_DEBUG
3700 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3701 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3702 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3703 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3707 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3708 struct iwl4965_rx_mem_buffer *rxb)
3710 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3711 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3712 "notification for %s:\n",
3713 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3714 iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3717 static void iwl4965_bg_beacon_update(struct work_struct *work)
3719 struct iwl4965_priv *priv =
3720 container_of(work, struct iwl4965_priv, beacon_update);
3721 struct sk_buff *beacon;
3723 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3724 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3727 IWL_ERROR("update beacon failed\n");
3731 mutex_lock(&priv->mutex);
3732 /* new beacon skb is allocated every time; dispose previous.*/
3733 if (priv->ibss_beacon)
3734 dev_kfree_skb(priv->ibss_beacon);
3736 priv->ibss_beacon = beacon;
3737 mutex_unlock(&priv->mutex);
3739 iwl4965_send_beacon_cmd(priv);
3742 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3743 struct iwl4965_rx_mem_buffer *rxb)
3745 #ifdef CONFIG_IWL4965_DEBUG
3746 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3747 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3748 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3750 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3751 "tsf %d %d rate %d\n",
3752 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3753 beacon->beacon_notify_hdr.failure_frame,
3754 le32_to_cpu(beacon->ibss_mgr_status),
3755 le32_to_cpu(beacon->high_tsf),
3756 le32_to_cpu(beacon->low_tsf), rate);
3759 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3760 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3761 queue_work(priv->workqueue, &priv->beacon_update);
3764 /* Service response to REPLY_SCAN_CMD (0x80) */
3765 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3766 struct iwl4965_rx_mem_buffer *rxb)
3768 #ifdef CONFIG_IWL4965_DEBUG
3769 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3770 struct iwl4965_scanreq_notification *notif =
3771 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3773 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3777 /* Service SCAN_START_NOTIFICATION (0x82) */
3778 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3779 struct iwl4965_rx_mem_buffer *rxb)
3781 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3782 struct iwl4965_scanstart_notification *notif =
3783 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3784 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3785 IWL_DEBUG_SCAN("Scan start: "
3787 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3789 notif->band ? "bg" : "a",
3791 notif->tsf_low, notif->status, notif->beacon_timer);
3794 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3795 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3796 struct iwl4965_rx_mem_buffer *rxb)
3798 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3799 struct iwl4965_scanresults_notification *notif =
3800 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3802 IWL_DEBUG_SCAN("Scan ch.res: "
3804 "(TSF: 0x%08X:%08X) - %d "
3805 "elapsed=%lu usec (%dms since last)\n",
3807 notif->band ? "bg" : "a",
3808 le32_to_cpu(notif->tsf_high),
3809 le32_to_cpu(notif->tsf_low),
3810 le32_to_cpu(notif->statistics[0]),
3811 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3812 jiffies_to_msecs(elapsed_jiffies
3813 (priv->last_scan_jiffies, jiffies)));
3815 priv->last_scan_jiffies = jiffies;
3816 priv->next_scan_jiffies = 0;
3819 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3820 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3821 struct iwl4965_rx_mem_buffer *rxb)
3823 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3824 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3826 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3827 scan_notif->scanned_channels,
3828 scan_notif->tsf_low,
3829 scan_notif->tsf_high, scan_notif->status);
3831 /* The HW is no longer scanning */
3832 clear_bit(STATUS_SCAN_HW, &priv->status);
3834 /* The scan completion notification came in, so kill that timer... */
3835 cancel_delayed_work(&priv->scan_check);
3837 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3838 (priv->scan_bands == 2) ? "2.4" : "5.2",
3839 jiffies_to_msecs(elapsed_jiffies
3840 (priv->scan_pass_start, jiffies)));
3842 /* Remove this scanned band from the list
3843 * of pending bands to scan */
3846 /* If a request to abort was given, or the scan did not succeed
3847 * then we reset the scan state machine and terminate,
3848 * re-queuing another scan if one has been requested */
3849 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3850 IWL_DEBUG_INFO("Aborted scan completed.\n");
3851 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3853 /* If there are more bands on this scan pass reschedule */
3854 if (priv->scan_bands > 0)
3858 priv->last_scan_jiffies = jiffies;
3859 priv->next_scan_jiffies = 0;
3860 IWL_DEBUG_INFO("Setting scan to off\n");
3862 clear_bit(STATUS_SCANNING, &priv->status);
3864 IWL_DEBUG_INFO("Scan took %dms\n",
3865 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3867 queue_work(priv->workqueue, &priv->scan_completed);
3872 priv->scan_pass_start = jiffies;
3873 queue_work(priv->workqueue, &priv->request_scan);
3876 /* Handle notification from uCode that card's power state is changing
3877 * due to software, hardware, or critical temperature RFKILL */
3878 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
3879 struct iwl4965_rx_mem_buffer *rxb)
3881 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3882 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3883 unsigned long status = priv->status;
3885 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3886 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3887 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3889 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3890 RF_CARD_DISABLED)) {
3892 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3893 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3895 if (!iwl4965_grab_nic_access(priv)) {
3896 iwl4965_write_direct32(
3897 priv, HBUS_TARG_MBX_C,
3898 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3900 iwl4965_release_nic_access(priv);
3903 if (!(flags & RXON_CARD_DISABLED)) {
3904 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3905 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3906 if (!iwl4965_grab_nic_access(priv)) {
3907 iwl4965_write_direct32(
3908 priv, HBUS_TARG_MBX_C,
3909 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3911 iwl4965_release_nic_access(priv);
3915 if (flags & RF_CARD_DISABLED) {
3916 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3917 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3918 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3919 if (!iwl4965_grab_nic_access(priv))
3920 iwl4965_release_nic_access(priv);
3924 if (flags & HW_CARD_DISABLED)
3925 set_bit(STATUS_RF_KILL_HW, &priv->status);
3927 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3930 if (flags & SW_CARD_DISABLED)
3931 set_bit(STATUS_RF_KILL_SW, &priv->status);
3933 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3935 if (!(flags & RXON_CARD_DISABLED))
3936 iwl4965_scan_cancel(priv);
3938 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3939 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3940 (test_bit(STATUS_RF_KILL_SW, &status) !=
3941 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3942 queue_work(priv->workqueue, &priv->rf_kill);
3944 wake_up_interruptible(&priv->wait_command_queue);
3948 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3950 * Setup the RX handlers for each of the reply types sent from the uCode
3953 * This function chains into the hardware specific files for them to setup
3954 * any hardware specific handlers as well.
3956 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
3958 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3959 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3960 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3961 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3962 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3963 iwl4965_rx_spectrum_measure_notif;
3964 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3965 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3966 iwl4965_rx_pm_debug_statistics_notif;
3967 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3970 * The same handler is used for both the REPLY to a discrete
3971 * statistics request from the host as well as for the periodic
3972 * statistics notifications (after received beacons) from the uCode.
3974 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3975 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3977 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3978 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3979 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3980 iwl4965_rx_scan_results_notif;
3981 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3982 iwl4965_rx_scan_complete_notif;
3983 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3984 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3986 /* Set up hardware specific Rx handlers */
3987 iwl4965_hw_rx_handler_setup(priv);
3991 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3992 * @rxb: Rx buffer to reclaim
3994 * If an Rx buffer has an async callback associated with it the callback
3995 * will be executed. The attached skb (if present) will only be freed
3996 * if the callback returns 1
3998 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
3999 struct iwl4965_rx_mem_buffer *rxb)
4001 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4002 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4003 int txq_id = SEQ_TO_QUEUE(sequence);
4004 int index = SEQ_TO_INDEX(sequence);
4005 int huge = sequence & SEQ_HUGE_FRAME;
4007 struct iwl4965_cmd *cmd;
4009 /* If a Tx command is being handled and it isn't in the actual
4010 * command queue then there a command routing bug has been introduced
4011 * in the queue management code. */
4012 if (txq_id != IWL_CMD_QUEUE_NUM)
4013 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4014 txq_id, pkt->hdr.cmd);
4015 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4017 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4018 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4020 /* Input error checking is done when commands are added to queue. */
4021 if (cmd->meta.flags & CMD_WANT_SKB) {
4022 cmd->meta.source->u.skb = rxb->skb;
4024 } else if (cmd->meta.u.callback &&
4025 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4028 iwl4965_tx_queue_reclaim(priv, txq_id, index);
4030 if (!(cmd->meta.flags & CMD_ASYNC)) {
4031 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4032 wake_up_interruptible(&priv->wait_command_queue);
4036 /************************** RX-FUNCTIONS ****************************/
4038 * Rx theory of operation
4040 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4041 * each of which point to Receive Buffers to be filled by 4965. These get
4042 * used not only for Rx frames, but for any command response or notification
4043 * from the 4965. The driver and 4965 manage the Rx buffers by means
4044 * of indexes into the circular buffer.
4047 * The host/firmware share two index registers for managing the Rx buffers.
4049 * The READ index maps to the first position that the firmware may be writing
4050 * to -- the driver can read up to (but not including) this position and get
4052 * The READ index is managed by the firmware once the card is enabled.
4054 * The WRITE index maps to the last position the driver has read from -- the
4055 * position preceding WRITE is the last slot the firmware can place a packet.
4057 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4060 * During initialization, the host sets up the READ queue position to the first
4061 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4063 * When the firmware places a packet in a buffer, it will advance the READ index
4064 * and fire the RX interrupt. The driver can then query the READ index and
4065 * process as many packets as possible, moving the WRITE index forward as it
4066 * resets the Rx queue buffers with new memory.
4068 * The management in the driver is as follows:
4069 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4070 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4071 * to replenish the iwl->rxq->rx_free.
4072 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4073 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4074 * 'processed' and 'read' driver indexes as well)
4075 * + A received packet is processed and handed to the kernel network stack,
4076 * detached from the iwl->rxq. The driver 'processed' index is updated.
4077 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4078 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4079 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4080 * were enough free buffers and RX_STALLED is set it is cleared.
4085 * iwl4965_rx_queue_alloc() Allocates rx_free
4086 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4087 * iwl4965_rx_queue_restock
4088 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4089 * queue, updates firmware pointers, and updates
4090 * the WRITE index. If insufficient rx_free buffers
4091 * are available, schedules iwl4965_rx_replenish
4093 * -- enable interrupts --
4094 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4095 * READ INDEX, detaching the SKB from the pool.
4096 * Moves the packet buffer from queue to rx_used.
4097 * Calls iwl4965_rx_queue_restock to refill any empty
4104 * iwl4965_rx_queue_space - Return number of free slots available in queue.
4106 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4108 int s = q->read - q->write;
4111 /* keep some buffer to not confuse full and empty queue */
4119 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4121 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4125 unsigned long flags;
4127 spin_lock_irqsave(&q->lock, flags);
4129 if (q->need_update == 0)
4132 /* If power-saving is in use, make sure device is awake */
4133 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4134 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4136 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4137 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4138 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4142 rc = iwl4965_grab_nic_access(priv);
4146 /* Device expects a multiple of 8 */
4147 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4149 iwl4965_release_nic_access(priv);
4151 /* Else device is assumed to be awake */
4153 /* Device expects a multiple of 8 */
4154 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4160 spin_unlock_irqrestore(&q->lock, flags);
4165 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4167 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4168 dma_addr_t dma_addr)
4170 return cpu_to_le32((u32)(dma_addr >> 8));
4175 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4177 * If there are slots in the RX queue that need to be restocked,
4178 * and we have free pre-allocated buffers, fill the ranks as much
4179 * as we can, pulling from rx_free.
4181 * This moves the 'write' index forward to catch up with 'processed', and
4182 * also updates the memory address in the firmware to reference the new
4185 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4187 struct iwl4965_rx_queue *rxq = &priv->rxq;
4188 struct list_head *element;
4189 struct iwl4965_rx_mem_buffer *rxb;
4190 unsigned long flags;
4193 spin_lock_irqsave(&rxq->lock, flags);
4194 write = rxq->write & ~0x7;
4195 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4196 /* Get next free Rx buffer, remove from free list */
4197 element = rxq->rx_free.next;
4198 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4201 /* Point to Rx buffer via next RBD in circular buffer */
4202 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4203 rxq->queue[rxq->write] = rxb;
4204 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4207 spin_unlock_irqrestore(&rxq->lock, flags);
4208 /* If the pre-allocated buffer pool is dropping low, schedule to
4210 if (rxq->free_count <= RX_LOW_WATERMARK)
4211 queue_work(priv->workqueue, &priv->rx_replenish);
4214 /* If we've added more space for the firmware to place data, tell it.
4215 * Increment device's write pointer in multiples of 8. */
4216 if ((write != (rxq->write & ~0x7))
4217 || (abs(rxq->write - rxq->read) > 7)) {
4218 spin_lock_irqsave(&rxq->lock, flags);
4219 rxq->need_update = 1;
4220 spin_unlock_irqrestore(&rxq->lock, flags);
4221 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4230 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4232 * When moving to rx_free an SKB is allocated for the slot.
4234 * Also restock the Rx queue via iwl4965_rx_queue_restock.
4235 * This is called as a scheduled work item (except for during initialization)
4237 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4239 struct iwl4965_rx_queue *rxq = &priv->rxq;
4240 struct list_head *element;
4241 struct iwl4965_rx_mem_buffer *rxb;
4242 unsigned long flags;
4243 spin_lock_irqsave(&rxq->lock, flags);
4244 while (!list_empty(&rxq->rx_used)) {
4245 element = rxq->rx_used.next;
4246 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4248 /* Alloc a new receive buffer */
4250 alloc_skb(priv->hw_setting.rx_buf_size,
4251 __GFP_NOWARN | GFP_ATOMIC);
4253 if (net_ratelimit())
4254 printk(KERN_CRIT DRV_NAME
4255 ": Can not allocate SKB buffers\n");
4256 /* We don't reschedule replenish work here -- we will
4257 * call the restock method and if it still needs
4258 * more buffers it will schedule replenish */
4261 priv->alloc_rxb_skb++;
4264 /* Get physical address of RB/SKB */
4266 pci_map_single(priv->pci_dev, rxb->skb->data,
4267 priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4268 list_add_tail(&rxb->list, &rxq->rx_free);
4271 spin_unlock_irqrestore(&rxq->lock, flags);
4275 * this should be called while priv->lock is locked
4277 static void __iwl4965_rx_replenish(void *data)
4279 struct iwl4965_priv *priv = data;
4281 iwl4965_rx_allocate(priv);
4282 iwl4965_rx_queue_restock(priv);
4286 void iwl4965_rx_replenish(void *data)
4288 struct iwl4965_priv *priv = data;
4289 unsigned long flags;
4291 iwl4965_rx_allocate(priv);
4293 spin_lock_irqsave(&priv->lock, flags);
4294 iwl4965_rx_queue_restock(priv);
4295 spin_unlock_irqrestore(&priv->lock, flags);
4298 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4299 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4300 * This free routine walks the list of POOL entries and if SKB is set to
4301 * non NULL it is unmapped and freed
4303 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4306 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4307 if (rxq->pool[i].skb != NULL) {
4308 pci_unmap_single(priv->pci_dev,
4309 rxq->pool[i].dma_addr,
4310 priv->hw_setting.rx_buf_size,
4311 PCI_DMA_FROMDEVICE);
4312 dev_kfree_skb(rxq->pool[i].skb);
4316 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4321 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4323 struct iwl4965_rx_queue *rxq = &priv->rxq;
4324 struct pci_dev *dev = priv->pci_dev;
4327 spin_lock_init(&rxq->lock);
4328 INIT_LIST_HEAD(&rxq->rx_free);
4329 INIT_LIST_HEAD(&rxq->rx_used);
4331 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4332 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4336 /* Fill the rx_used queue with _all_ of the Rx buffers */
4337 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4338 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4340 /* Set us so that we have processed and used all buffers, but have
4341 * not restocked the Rx queue with fresh buffers */
4342 rxq->read = rxq->write = 0;
4343 rxq->free_count = 0;
4344 rxq->need_update = 0;
4348 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4350 unsigned long flags;
4352 spin_lock_irqsave(&rxq->lock, flags);
4353 INIT_LIST_HEAD(&rxq->rx_free);
4354 INIT_LIST_HEAD(&rxq->rx_used);
4355 /* Fill the rx_used queue with _all_ of the Rx buffers */
4356 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4357 /* In the reset function, these buffers may have been allocated
4358 * to an SKB, so we need to unmap and free potential storage */
4359 if (rxq->pool[i].skb != NULL) {
4360 pci_unmap_single(priv->pci_dev,
4361 rxq->pool[i].dma_addr,
4362 priv->hw_setting.rx_buf_size,
4363 PCI_DMA_FROMDEVICE);
4364 priv->alloc_rxb_skb--;
4365 dev_kfree_skb(rxq->pool[i].skb);
4366 rxq->pool[i].skb = NULL;
4368 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4371 /* Set us so that we have processed and used all buffers, but have
4372 * not restocked the Rx queue with fresh buffers */
4373 rxq->read = rxq->write = 0;
4374 rxq->free_count = 0;
4375 spin_unlock_irqrestore(&rxq->lock, flags);
4378 /* Convert linear signal-to-noise ratio into dB */
4379 static u8 ratio2dB[100] = {
4380 /* 0 1 2 3 4 5 6 7 8 9 */
4381 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4382 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4383 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4384 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4385 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4386 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4387 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4388 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4389 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4390 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4393 /* Calculates a relative dB value from a ratio of linear
4394 * (i.e. not dB) signal levels.
4395 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4396 int iwl4965_calc_db_from_ratio(int sig_ratio)
4398 /* 1000:1 or higher just report as 60 dB */
4399 if (sig_ratio >= 1000)
4402 /* 100:1 or higher, divide by 10 and use table,
4403 * add 20 dB to make up for divide by 10 */
4404 if (sig_ratio >= 100)
4405 return (20 + (int)ratio2dB[sig_ratio/10]);
4407 /* We shouldn't see this */
4411 /* Use table for ratios 1:1 - 99:1 */
4412 return (int)ratio2dB[sig_ratio];
4415 #define PERFECT_RSSI (-20) /* dBm */
4416 #define WORST_RSSI (-95) /* dBm */
4417 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4419 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4420 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4421 * about formulas used below. */
4422 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4425 int degradation = PERFECT_RSSI - rssi_dbm;
4427 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4428 * as indicator; formula is (signal dbm - noise dbm).
4429 * SNR at or above 40 is a great signal (100%).
4430 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4431 * Weakest usable signal is usually 10 - 15 dB SNR. */
4433 if (rssi_dbm - noise_dbm >= 40)
4435 else if (rssi_dbm < noise_dbm)
4437 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4439 /* Else use just the signal level.
4440 * This formula is a least squares fit of data points collected and
4441 * compared with a reference system that had a percentage (%) display
4442 * for signal quality. */
4444 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4445 (15 * RSSI_RANGE + 62 * degradation)) /
4446 (RSSI_RANGE * RSSI_RANGE);
4450 else if (sig_qual < 1)
4457 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4459 * Uses the priv->rx_handlers callback function array to invoke
4460 * the appropriate handlers, including command responses,
4461 * frame-received notifications, and other notifications.
4463 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4465 struct iwl4965_rx_mem_buffer *rxb;
4466 struct iwl4965_rx_packet *pkt;
4467 struct iwl4965_rx_queue *rxq = &priv->rxq;
4470 unsigned long flags;
4474 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4475 * buffer that the driver may process (last buffer filled by ucode). */
4476 r = iwl4965_hw_get_rx_read(priv);
4479 /* Rx interrupt, but nothing sent from uCode */
4481 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4483 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4487 rxb = rxq->queue[i];
4489 /* If an RXB doesn't have a Rx queue slot associated with it,
4490 * then a bug has been introduced in the queue refilling
4491 * routines -- catch it here */
4492 BUG_ON(rxb == NULL);
4494 rxq->queue[i] = NULL;
4496 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4497 priv->hw_setting.rx_buf_size,
4498 PCI_DMA_FROMDEVICE);
4499 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4501 /* Reclaim a command buffer only if this packet is a response
4502 * to a (driver-originated) command.
4503 * If the packet (e.g. Rx frame) originated from uCode,
4504 * there is no command buffer to reclaim.
4505 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4506 * but apparently a few don't get set; catch them here. */
4507 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4508 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4509 (pkt->hdr.cmd != REPLY_4965_RX) &&
4510 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4511 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4512 (pkt->hdr.cmd != REPLY_TX);
4514 /* Based on type of command response or notification,
4515 * handle those that need handling via function in
4516 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4517 if (priv->rx_handlers[pkt->hdr.cmd]) {
4518 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4519 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4520 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4521 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4523 /* No handling needed */
4524 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4525 "r %d i %d No handler needed for %s, 0x%02x\n",
4526 r, i, get_cmd_string(pkt->hdr.cmd),
4531 /* Invoke any callbacks, transfer the skb to caller, and
4532 * fire off the (possibly) blocking iwl4965_send_cmd()
4533 * as we reclaim the driver command queue */
4534 if (rxb && rxb->skb)
4535 iwl4965_tx_cmd_complete(priv, rxb);
4537 IWL_WARNING("Claim null rxb?\n");
4540 /* For now we just don't re-use anything. We can tweak this
4541 * later to try and re-use notification packets and SKBs that
4542 * fail to Rx correctly */
4543 if (rxb->skb != NULL) {
4544 priv->alloc_rxb_skb--;
4545 dev_kfree_skb_any(rxb->skb);
4549 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4550 priv->hw_setting.rx_buf_size,
4551 PCI_DMA_FROMDEVICE);
4552 spin_lock_irqsave(&rxq->lock, flags);
4553 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4554 spin_unlock_irqrestore(&rxq->lock, flags);
4555 i = (i + 1) & RX_QUEUE_MASK;
4556 /* If there are a lot of unused frames,
4557 * restock the Rx queue so ucode wont assert. */
4562 __iwl4965_rx_replenish(priv);
4568 /* Backtrack one entry */
4570 iwl4965_rx_queue_restock(priv);
4574 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4576 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4577 struct iwl4965_tx_queue *txq)
4581 int txq_id = txq->q.id;
4583 if (txq->need_update == 0)
4586 /* if we're trying to save power */
4587 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4588 /* wake up nic if it's powered down ...
4589 * uCode will wake up, and interrupt us again, so next
4590 * time we'll skip this part. */
4591 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4593 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4594 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4595 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4596 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4600 /* restore this queue's parameters in nic hardware. */
4601 rc = iwl4965_grab_nic_access(priv);
4604 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4605 txq->q.write_ptr | (txq_id << 8));
4606 iwl4965_release_nic_access(priv);
4608 /* else not in power-save mode, uCode will never sleep when we're
4609 * trying to tx (during RFKILL, we're not trying to tx). */
4611 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4612 txq->q.write_ptr | (txq_id << 8));
4614 txq->need_update = 0;
4619 #ifdef CONFIG_IWL4965_DEBUG
4620 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4622 DECLARE_MAC_BUF(mac);
4624 IWL_DEBUG_RADIO("RX CONFIG:\n");
4625 iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4626 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4627 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4628 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4629 le32_to_cpu(rxon->filter_flags));
4630 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4631 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4632 rxon->ofdm_basic_rates);
4633 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4634 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4635 print_mac(mac, rxon->node_addr));
4636 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4637 print_mac(mac, rxon->bssid_addr));
4638 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4642 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4644 IWL_DEBUG_ISR("Enabling interrupts\n");
4645 set_bit(STATUS_INT_ENABLED, &priv->status);
4646 iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4649 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4651 clear_bit(STATUS_INT_ENABLED, &priv->status);
4653 /* disable interrupts from uCode/NIC to host */
4654 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4656 /* acknowledge/clear/reset any interrupts still pending
4657 * from uCode or flow handler (Rx/Tx DMA) */
4658 iwl4965_write32(priv, CSR_INT, 0xffffffff);
4659 iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4660 IWL_DEBUG_ISR("Disabled interrupts\n");
4663 static const char *desc_lookup(int i)
4671 return "BAD_CHECKSUM";
4673 return "NMI_INTERRUPT";
4677 return "FATAL_ERROR";
4683 #define ERROR_START_OFFSET (1 * sizeof(u32))
4684 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4686 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4689 u32 desc, time, count, base, data1;
4690 u32 blink1, blink2, ilink1, ilink2;
4693 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4695 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4696 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4700 rc = iwl4965_grab_nic_access(priv);
4702 IWL_WARNING("Can not read from adapter at this time.\n");
4706 count = iwl4965_read_targ_mem(priv, base);
4708 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4709 IWL_ERROR("Start IWL Error Log Dump:\n");
4710 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4713 desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4714 blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4715 blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4716 ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4717 ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4718 data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4719 data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4720 line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4721 time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4723 IWL_ERROR("Desc Time "
4724 "data1 data2 line\n");
4725 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4726 desc_lookup(desc), desc, time, data1, data2, line);
4727 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4728 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4731 iwl4965_release_nic_access(priv);
4734 #define EVENT_START_OFFSET (4 * sizeof(u32))
4737 * iwl4965_print_event_log - Dump error event log to syslog
4739 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4741 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4742 u32 num_events, u32 mode)
4745 u32 base; /* SRAM byte address of event log header */
4746 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4747 u32 ptr; /* SRAM byte address of log data */
4748 u32 ev, time, data; /* event log data */
4750 if (num_events == 0)
4753 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4756 event_size = 2 * sizeof(u32);
4758 event_size = 3 * sizeof(u32);
4760 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4762 /* "time" is actually "data" for mode 0 (no timestamp).
4763 * place event id # at far right for easier visual parsing. */
4764 for (i = 0; i < num_events; i++) {
4765 ev = iwl4965_read_targ_mem(priv, ptr);
4767 time = iwl4965_read_targ_mem(priv, ptr);
4770 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4772 data = iwl4965_read_targ_mem(priv, ptr);
4774 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4779 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4782 u32 base; /* SRAM byte address of event log header */
4783 u32 capacity; /* event log capacity in # entries */
4784 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4785 u32 num_wraps; /* # times uCode wrapped to top of log */
4786 u32 next_entry; /* index of next entry to be written by uCode */
4787 u32 size; /* # entries that we'll print */
4789 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4790 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4791 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4795 rc = iwl4965_grab_nic_access(priv);
4797 IWL_WARNING("Can not read from adapter at this time.\n");
4801 /* event log header */
4802 capacity = iwl4965_read_targ_mem(priv, base);
4803 mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4804 num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4805 next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4807 size = num_wraps ? capacity : next_entry;
4809 /* bail out if nothing in log */
4811 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4812 iwl4965_release_nic_access(priv);
4816 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4819 /* if uCode has wrapped back to top of log, start at the oldest entry,
4820 * i.e the next one that uCode would fill. */
4822 iwl4965_print_event_log(priv, next_entry,
4823 capacity - next_entry, mode);
4825 /* (then/else) start at top of log */
4826 iwl4965_print_event_log(priv, 0, next_entry, mode);
4828 iwl4965_release_nic_access(priv);
4832 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4834 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
4836 /* Set the FW error flag -- cleared on iwl4965_down */
4837 set_bit(STATUS_FW_ERROR, &priv->status);
4839 /* Cancel currently queued command. */
4840 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4842 #ifdef CONFIG_IWL4965_DEBUG
4843 if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
4844 iwl4965_dump_nic_error_log(priv);
4845 iwl4965_dump_nic_event_log(priv);
4846 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4850 wake_up_interruptible(&priv->wait_command_queue);
4852 /* Keep the restart process from trying to send host
4853 * commands by clearing the INIT status bit */
4854 clear_bit(STATUS_READY, &priv->status);
4856 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4857 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4858 "Restarting adapter due to uCode error.\n");
4860 if (iwl4965_is_associated(priv)) {
4861 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4862 sizeof(priv->recovery_rxon));
4863 priv->error_recovering = 1;
4865 queue_work(priv->workqueue, &priv->restart);
4869 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
4871 unsigned long flags;
4873 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4874 sizeof(priv->staging_rxon));
4875 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4876 iwl4965_commit_rxon(priv);
4878 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4880 spin_lock_irqsave(&priv->lock, flags);
4881 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4882 priv->error_recovering = 0;
4883 spin_unlock_irqrestore(&priv->lock, flags);
4886 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
4888 u32 inta, handled = 0;
4890 unsigned long flags;
4891 #ifdef CONFIG_IWL4965_DEBUG
4895 spin_lock_irqsave(&priv->lock, flags);
4897 /* Ack/clear/reset pending uCode interrupts.
4898 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4899 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4900 inta = iwl4965_read32(priv, CSR_INT);
4901 iwl4965_write32(priv, CSR_INT, inta);
4903 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4904 * Any new interrupts that happen after this, either while we're
4905 * in this tasklet, or later, will show up in next ISR/tasklet. */
4906 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4907 iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4909 #ifdef CONFIG_IWL4965_DEBUG
4910 if (iwl4965_debug_level & IWL_DL_ISR) {
4911 /* just for debug */
4912 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4913 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4914 inta, inta_mask, inta_fh);
4918 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4919 * atomic, make sure that inta covers all the interrupts that
4920 * we've discovered, even if FH interrupt came in just after
4921 * reading CSR_INT. */
4922 if (inta_fh & CSR49_FH_INT_RX_MASK)
4923 inta |= CSR_INT_BIT_FH_RX;
4924 if (inta_fh & CSR49_FH_INT_TX_MASK)
4925 inta |= CSR_INT_BIT_FH_TX;
4927 /* Now service all interrupt bits discovered above. */
4928 if (inta & CSR_INT_BIT_HW_ERR) {
4929 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4931 /* Tell the device to stop sending interrupts */
4932 iwl4965_disable_interrupts(priv);
4934 iwl4965_irq_handle_error(priv);
4936 handled |= CSR_INT_BIT_HW_ERR;
4938 spin_unlock_irqrestore(&priv->lock, flags);
4943 #ifdef CONFIG_IWL4965_DEBUG
4944 if (iwl4965_debug_level & (IWL_DL_ISR)) {
4945 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4946 if (inta & CSR_INT_BIT_SCD)
4947 IWL_DEBUG_ISR("Scheduler finished to transmit "
4948 "the frame/frames.\n");
4950 /* Alive notification via Rx interrupt will do the real work */
4951 if (inta & CSR_INT_BIT_ALIVE)
4952 IWL_DEBUG_ISR("Alive interrupt\n");
4955 /* Safely ignore these bits for debug checks below */
4956 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4958 /* HW RF KILL switch toggled */
4959 if (inta & CSR_INT_BIT_RF_KILL) {
4961 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4962 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4965 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4966 "RF_KILL bit toggled to %s.\n",
4967 hw_rf_kill ? "disable radio":"enable radio");
4969 /* Queue restart only if RF_KILL switch was set to "kill"
4970 * when we loaded driver, and is now set to "enable".
4971 * After we're Alive, RF_KILL gets handled by
4972 * iwl4965_rx_card_state_notif() */
4973 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4974 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4975 queue_work(priv->workqueue, &priv->restart);
4978 handled |= CSR_INT_BIT_RF_KILL;
4981 /* Chip got too hot and stopped itself */
4982 if (inta & CSR_INT_BIT_CT_KILL) {
4983 IWL_ERROR("Microcode CT kill error detected.\n");
4984 handled |= CSR_INT_BIT_CT_KILL;
4987 /* Error detected by uCode */
4988 if (inta & CSR_INT_BIT_SW_ERR) {
4989 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4991 iwl4965_irq_handle_error(priv);
4992 handled |= CSR_INT_BIT_SW_ERR;
4995 /* uCode wakes up after power-down sleep */
4996 if (inta & CSR_INT_BIT_WAKEUP) {
4997 IWL_DEBUG_ISR("Wakeup interrupt\n");
4998 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4999 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5000 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5001 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5002 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5003 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5004 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5006 handled |= CSR_INT_BIT_WAKEUP;
5009 /* All uCode command responses, including Tx command responses,
5010 * Rx "responses" (frame-received notification), and other
5011 * notifications from uCode come through here*/
5012 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5013 iwl4965_rx_handle(priv);
5014 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5017 if (inta & CSR_INT_BIT_FH_TX) {
5018 IWL_DEBUG_ISR("Tx interrupt\n");
5019 handled |= CSR_INT_BIT_FH_TX;
5022 if (inta & ~handled)
5023 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5025 if (inta & ~CSR_INI_SET_MASK) {
5026 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5027 inta & ~CSR_INI_SET_MASK);
5028 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5031 /* Re-enable all interrupts */
5032 iwl4965_enable_interrupts(priv);
5034 #ifdef CONFIG_IWL4965_DEBUG
5035 if (iwl4965_debug_level & (IWL_DL_ISR)) {
5036 inta = iwl4965_read32(priv, CSR_INT);
5037 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5038 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5039 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5040 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5043 spin_unlock_irqrestore(&priv->lock, flags);
5046 static irqreturn_t iwl4965_isr(int irq, void *data)
5048 struct iwl4965_priv *priv = data;
5049 u32 inta, inta_mask;
5054 spin_lock(&priv->lock);
5056 /* Disable (but don't clear!) interrupts here to avoid
5057 * back-to-back ISRs and sporadic interrupts from our NIC.
5058 * If we have something to service, the tasklet will re-enable ints.
5059 * If we *don't* have something, we'll re-enable before leaving here. */
5060 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5061 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5063 /* Discover which interrupts are active/pending */
5064 inta = iwl4965_read32(priv, CSR_INT);
5065 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5067 /* Ignore interrupt if there's nothing in NIC to service.
5068 * This may be due to IRQ shared with another device,
5069 * or due to sporadic interrupts thrown from our NIC. */
5070 if (!inta && !inta_fh) {
5071 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5075 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5076 /* Hardware disappeared. It might have already raised
5078 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5082 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5083 inta, inta_mask, inta_fh);
5085 inta &= ~CSR_INT_BIT_SCD;
5087 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5088 if (likely(inta || inta_fh))
5089 tasklet_schedule(&priv->irq_tasklet);
5092 spin_unlock(&priv->lock);
5096 /* re-enable interrupts here since we don't have anything to service. */
5097 iwl4965_enable_interrupts(priv);
5098 spin_unlock(&priv->lock);
5102 /************************** EEPROM BANDS ****************************
5104 * The iwl4965_eeprom_band definitions below provide the mapping from the
5105 * EEPROM contents to the specific channel number supported for each
5108 * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5109 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5110 * The specific geography and calibration information for that channel
5111 * is contained in the eeprom map itself.
5113 * During init, we copy the eeprom information and channel map
5114 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5116 * channel_map_24/52 provides the index in the channel_info array for a
5117 * given channel. We have to have two separate maps as there is channel
5118 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5121 * A value of 0xff stored in the channel_map indicates that the channel
5122 * is not supported by the hardware at all.
5124 * A value of 0xfe in the channel_map indicates that the channel is not
5125 * valid for Tx with the current hardware. This means that
5126 * while the system can tune and receive on a given channel, it may not
5127 * be able to associate or transmit any frames on that
5128 * channel. There is no corresponding channel information for that
5131 *********************************************************************/
5134 static const u8 iwl4965_eeprom_band_1[14] = {
5135 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5139 static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5140 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5143 static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5144 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5147 static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5148 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5151 static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5152 145, 149, 153, 157, 161, 165
5155 static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5159 static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5160 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5163 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5165 int *eeprom_ch_count,
5166 const struct iwl4965_eeprom_channel
5168 const u8 **eeprom_ch_index)
5171 case 1: /* 2.4GHz band */
5172 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5173 *eeprom_ch_info = priv->eeprom.band_1_channels;
5174 *eeprom_ch_index = iwl4965_eeprom_band_1;
5176 case 2: /* 4.9GHz band */
5177 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5178 *eeprom_ch_info = priv->eeprom.band_2_channels;
5179 *eeprom_ch_index = iwl4965_eeprom_band_2;
5181 case 3: /* 5.2GHz band */
5182 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5183 *eeprom_ch_info = priv->eeprom.band_3_channels;
5184 *eeprom_ch_index = iwl4965_eeprom_band_3;
5186 case 4: /* 5.5GHz band */
5187 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5188 *eeprom_ch_info = priv->eeprom.band_4_channels;
5189 *eeprom_ch_index = iwl4965_eeprom_band_4;
5191 case 5: /* 5.7GHz band */
5192 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5193 *eeprom_ch_info = priv->eeprom.band_5_channels;
5194 *eeprom_ch_index = iwl4965_eeprom_band_5;
5196 case 6: /* 2.4GHz FAT channels */
5197 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5198 *eeprom_ch_info = priv->eeprom.band_24_channels;
5199 *eeprom_ch_index = iwl4965_eeprom_band_6;
5201 case 7: /* 5 GHz FAT channels */
5202 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5203 *eeprom_ch_info = priv->eeprom.band_52_channels;
5204 *eeprom_ch_index = iwl4965_eeprom_band_7;
5213 * iwl4965_get_channel_info - Find driver's private channel info
5215 * Based on band and channel number.
5217 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5218 enum ieee80211_band band, u16 channel)
5223 case IEEE80211_BAND_5GHZ:
5224 for (i = 14; i < priv->channel_count; i++) {
5225 if (priv->channel_info[i].channel == channel)
5226 return &priv->channel_info[i];
5229 case IEEE80211_BAND_2GHZ:
5230 if (channel >= 1 && channel <= 14)
5231 return &priv->channel_info[channel - 1];
5240 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5244 * iwl4965_init_channel_map - Set up driver's info for all possible channels
5246 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5248 int eeprom_ch_count = 0;
5249 const u8 *eeprom_ch_index = NULL;
5250 const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5252 struct iwl4965_channel_info *ch_info;
5254 if (priv->channel_count) {
5255 IWL_DEBUG_INFO("Channel map already initialized.\n");
5259 if (priv->eeprom.version < 0x2f) {
5260 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5261 priv->eeprom.version);
5265 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5267 priv->channel_count =
5268 ARRAY_SIZE(iwl4965_eeprom_band_1) +
5269 ARRAY_SIZE(iwl4965_eeprom_band_2) +
5270 ARRAY_SIZE(iwl4965_eeprom_band_3) +
5271 ARRAY_SIZE(iwl4965_eeprom_band_4) +
5272 ARRAY_SIZE(iwl4965_eeprom_band_5);
5274 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5276 priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5277 priv->channel_count, GFP_KERNEL);
5278 if (!priv->channel_info) {
5279 IWL_ERROR("Could not allocate channel_info\n");
5280 priv->channel_count = 0;
5284 ch_info = priv->channel_info;
5286 /* Loop through the 5 EEPROM bands adding them in order to the
5287 * channel map we maintain (that contains additional information than
5288 * what just in the EEPROM) */
5289 for (band = 1; band <= 5; band++) {
5291 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5292 &eeprom_ch_info, &eeprom_ch_index);
5294 /* Loop through each band adding each of the channels */
5295 for (ch = 0; ch < eeprom_ch_count; ch++) {
5296 ch_info->channel = eeprom_ch_index[ch];
5297 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5298 IEEE80211_BAND_5GHZ;
5300 /* permanently store EEPROM's channel regulatory flags
5301 * and max power in channel info database. */
5302 ch_info->eeprom = eeprom_ch_info[ch];
5304 /* Copy the run-time flags so they are there even on
5305 * invalid channels */
5306 ch_info->flags = eeprom_ch_info[ch].flags;
5308 if (!(is_channel_valid(ch_info))) {
5309 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5313 is_channel_a_band(ch_info) ?
5319 /* Initialize regulatory-based run-time data */
5320 ch_info->max_power_avg = ch_info->curr_txpow =
5321 eeprom_ch_info[ch].max_power_avg;
5322 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5323 ch_info->min_power = 0;
5325 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
5326 " %ddBm): Ad-Hoc %ssupported\n",
5328 is_channel_a_band(ch_info) ?
5330 CHECK_AND_PRINT(VALID),
5331 CHECK_AND_PRINT(IBSS),
5332 CHECK_AND_PRINT(ACTIVE),
5333 CHECK_AND_PRINT(RADAR),
5334 CHECK_AND_PRINT(WIDE),
5335 CHECK_AND_PRINT(NARROW),
5336 CHECK_AND_PRINT(DFS),
5337 eeprom_ch_info[ch].flags,
5338 eeprom_ch_info[ch].max_power_avg,
5339 ((eeprom_ch_info[ch].
5340 flags & EEPROM_CHANNEL_IBSS)
5341 && !(eeprom_ch_info[ch].
5342 flags & EEPROM_CHANNEL_RADAR))
5345 /* Set the user_txpower_limit to the highest power
5346 * supported by any channel */
5347 if (eeprom_ch_info[ch].max_power_avg >
5348 priv->user_txpower_limit)
5349 priv->user_txpower_limit =
5350 eeprom_ch_info[ch].max_power_avg;
5356 /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5357 for (band = 6; band <= 7; band++) {
5358 enum ieee80211_band ieeeband;
5359 u8 fat_extension_chan;
5361 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5362 &eeprom_ch_info, &eeprom_ch_index);
5364 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5365 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5367 /* Loop through each band adding each of the channels */
5368 for (ch = 0; ch < eeprom_ch_count; ch++) {
5371 ((eeprom_ch_index[ch] == 5) ||
5372 (eeprom_ch_index[ch] == 6) ||
5373 (eeprom_ch_index[ch] == 7)))
5374 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5376 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5378 /* Set up driver's info for lower half */
5379 iwl4965_set_fat_chan_info(priv, ieeeband,
5380 eeprom_ch_index[ch],
5381 &(eeprom_ch_info[ch]),
5382 fat_extension_chan);
5384 /* Set up driver's info for upper half */
5385 iwl4965_set_fat_chan_info(priv, ieeeband,
5386 (eeprom_ch_index[ch] + 4),
5387 &(eeprom_ch_info[ch]),
5388 HT_IE_EXT_CHANNEL_BELOW);
5396 * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5398 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5400 kfree(priv->channel_info);
5401 priv->channel_count = 0;
5404 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5405 * sending probe req. This should be set long enough to hear probe responses
5406 * from more than one AP. */
5407 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5408 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5410 /* For faster active scanning, scan will move to the next channel if fewer than
5411 * PLCP_QUIET_THRESH packets are heard on this channel within
5412 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5413 * time if it's a quiet channel (nothing responded to our probe, and there's
5414 * no other traffic).
5415 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5416 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5417 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5419 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5420 * Must be set longer than active dwell time.
5421 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5422 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5423 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5424 #define IWL_PASSIVE_DWELL_BASE (100)
5425 #define IWL_CHANNEL_TUNE_TIME 5
5427 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv,
5428 enum ieee80211_band band)
5430 if (band == IEEE80211_BAND_5GHZ)
5431 return IWL_ACTIVE_DWELL_TIME_52;
5433 return IWL_ACTIVE_DWELL_TIME_24;
5436 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv,
5437 enum ieee80211_band band)
5439 u16 active = iwl4965_get_active_dwell_time(priv, band);
5440 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5441 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5442 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5444 if (iwl4965_is_associated(priv)) {
5445 /* If we're associated, we clamp the maximum passive
5446 * dwell time to be 98% of the beacon interval (minus
5447 * 2 * channel tune time) */
5448 passive = priv->beacon_int;
5449 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5450 passive = IWL_PASSIVE_DWELL_BASE;
5451 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5454 if (passive <= active)
5455 passive = active + 1;
5460 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv,
5461 enum ieee80211_band band,
5462 u8 is_active, u8 direct_mask,
5463 struct iwl4965_scan_channel *scan_ch)
5465 const struct ieee80211_channel *channels = NULL;
5466 const struct ieee80211_supported_band *sband;
5467 const struct iwl4965_channel_info *ch_info;
5468 u16 passive_dwell = 0;
5469 u16 active_dwell = 0;
5472 sband = iwl4965_get_hw_mode(priv, band);
5476 channels = sband->channels;
5478 active_dwell = iwl4965_get_active_dwell_time(priv, band);
5479 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5481 for (i = 0, added = 0; i < sband->n_channels; i++) {
5482 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5483 le16_to_cpu(priv->active_rxon.channel)) {
5484 if (iwl4965_is_associated(priv)) {
5486 ("Skipping current channel %d\n",
5487 le16_to_cpu(priv->active_rxon.channel));
5490 } else if (priv->only_active_channel)
5493 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5495 ch_info = iwl4965_get_channel_info(priv, band,
5497 if (!is_channel_valid(ch_info)) {
5498 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5503 if (!is_active || is_channel_passive(ch_info) ||
5504 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5505 scan_ch->type = 0; /* passive */
5507 scan_ch->type = 1; /* active */
5509 if (scan_ch->type & 1)
5510 scan_ch->type |= (direct_mask << 1);
5512 if (is_channel_narrow(ch_info))
5513 scan_ch->type |= (1 << 7);
5515 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5516 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5518 /* Set txpower levels to defaults */
5519 scan_ch->tpc.dsp_atten = 110;
5520 /* scan_pwr_info->tpc.dsp_atten; */
5522 /*scan_pwr_info->tpc.tx_gain; */
5523 if (band == IEEE80211_BAND_5GHZ)
5524 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5526 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5527 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5529 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5533 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5535 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5536 (scan_ch->type & 1) ?
5537 active_dwell : passive_dwell);
5543 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5547 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5548 struct ieee80211_rate *rates)
5552 for (i = 0; i < IWL_RATE_COUNT; i++) {
5553 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5554 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5555 rates[i].hw_value_short = i;
5557 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5559 * If CCK != 1M then set short preamble rate flag.
5561 rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5562 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5568 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5570 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5572 struct iwl4965_channel_info *ch;
5573 struct ieee80211_supported_band *sband;
5574 struct ieee80211_channel *channels;
5575 struct ieee80211_channel *geo_ch;
5576 struct ieee80211_rate *rates;
5579 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5580 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5581 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5582 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5586 channels = kzalloc(sizeof(struct ieee80211_channel) *
5587 priv->channel_count, GFP_KERNEL);
5591 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5598 /* 5.2GHz channels start after the 2.4GHz channels */
5599 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5600 sband->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5602 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5603 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5605 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5607 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5608 sband->channels = channels;
5610 sband->bitrates = rates;
5611 sband->n_bitrates = IWL_RATE_COUNT;
5613 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5615 priv->ieee_channels = channels;
5616 priv->ieee_rates = rates;
5618 iwl4965_init_hw_rates(priv, rates);
5620 for (i = 0; i < priv->channel_count; i++) {
5621 ch = &priv->channel_info[i];
5623 /* FIXME: might be removed if scan is OK */
5624 if (!is_channel_valid(ch))
5627 if (is_channel_a_band(ch))
5628 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5630 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5632 geo_ch = &sband->channels[sband->n_channels++];
5634 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5635 geo_ch->max_power = ch->max_power_avg;
5636 geo_ch->max_antenna_gain = 0xff;
5637 geo_ch->hw_value = ch->channel;
5639 if (is_channel_valid(ch)) {
5640 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5641 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5643 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5644 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5646 if (ch->flags & EEPROM_CHANNEL_RADAR)
5647 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5649 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5650 priv->max_channel_txpower_limit =
5653 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5656 /* Save flags for reg domain usage */
5657 geo_ch->orig_flags = geo_ch->flags;
5659 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5660 ch->channel, geo_ch->center_freq,
5661 is_channel_a_band(ch) ? "5.2" : "2.4",
5662 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5663 "restricted" : "valid",
5667 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5668 priv->cfg->sku & IWL_SKU_A) {
5669 printk(KERN_INFO DRV_NAME
5670 ": Incorrectly detected BG card as ABG. Please send "
5671 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5672 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5673 priv->cfg->sku &= ~IWL_SKU_A;
5676 printk(KERN_INFO DRV_NAME
5677 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5678 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5679 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5681 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5682 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5684 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5690 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5692 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5694 kfree(priv->ieee_channels);
5695 kfree(priv->ieee_rates);
5696 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5699 /******************************************************************************
5701 * uCode download functions
5703 ******************************************************************************/
5705 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5707 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5708 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5709 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5710 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5711 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5712 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5716 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5717 * looking at all data.
5719 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5727 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5729 rc = iwl4965_grab_nic_access(priv);
5733 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5736 for (; len > 0; len -= sizeof(u32), image++) {
5737 /* read data comes through single port, auto-incr addr */
5738 /* NOTE: Use the debugless read so we don't flood kernel log
5739 * if IWL_DL_IO is set */
5740 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5741 if (val != le32_to_cpu(*image)) {
5742 IWL_ERROR("uCode INST section is invalid at "
5743 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5744 save_len - len, val, le32_to_cpu(*image));
5752 iwl4965_release_nic_access(priv);
5756 ("ucode image in INSTRUCTION memory is good\n");
5763 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5764 * using sample data 100 bytes apart. If these sample points are good,
5765 * it's a pretty good bet that everything between them is good, too.
5767 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5774 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5776 rc = iwl4965_grab_nic_access(priv);
5780 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5781 /* read data comes through single port, auto-incr addr */
5782 /* NOTE: Use the debugless read so we don't flood kernel log
5783 * if IWL_DL_IO is set */
5784 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5785 i + RTC_INST_LOWER_BOUND);
5786 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5787 if (val != le32_to_cpu(*image)) {
5788 #if 0 /* Enable this if you want to see details */
5789 IWL_ERROR("uCode INST section is invalid at "
5790 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5800 iwl4965_release_nic_access(priv);
5807 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5808 * and verify its contents
5810 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5817 image = (__le32 *)priv->ucode_boot.v_addr;
5818 len = priv->ucode_boot.len;
5819 rc = iwl4965_verify_inst_sparse(priv, image, len);
5821 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5825 /* Try initialize */
5826 image = (__le32 *)priv->ucode_init.v_addr;
5827 len = priv->ucode_init.len;
5828 rc = iwl4965_verify_inst_sparse(priv, image, len);
5830 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5834 /* Try runtime/protocol */
5835 image = (__le32 *)priv->ucode_code.v_addr;
5836 len = priv->ucode_code.len;
5837 rc = iwl4965_verify_inst_sparse(priv, image, len);
5839 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5843 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5845 /* Since nothing seems to match, show first several data entries in
5846 * instruction SRAM, so maybe visual inspection will give a clue.
5847 * Selection of bootstrap image (vs. other images) is arbitrary. */
5848 image = (__le32 *)priv->ucode_boot.v_addr;
5849 len = priv->ucode_boot.len;
5850 rc = iwl4965_verify_inst_full(priv, image, len);
5856 /* check contents of special bootstrap uCode SRAM */
5857 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
5859 __le32 *image = priv->ucode_boot.v_addr;
5860 u32 len = priv->ucode_boot.len;
5864 IWL_DEBUG_INFO("Begin verify bsm\n");
5866 /* verify BSM SRAM contents */
5867 val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5868 for (reg = BSM_SRAM_LOWER_BOUND;
5869 reg < BSM_SRAM_LOWER_BOUND + len;
5870 reg += sizeof(u32), image ++) {
5871 val = iwl4965_read_prph(priv, reg);
5872 if (val != le32_to_cpu(*image)) {
5873 IWL_ERROR("BSM uCode verification failed at "
5874 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5875 BSM_SRAM_LOWER_BOUND,
5876 reg - BSM_SRAM_LOWER_BOUND, len,
5877 val, le32_to_cpu(*image));
5882 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5888 * iwl4965_load_bsm - Load bootstrap instructions
5892 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5893 * in special SRAM that does not power down during RFKILL. When powering back
5894 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5895 * the bootstrap program into the on-board processor, and starts it.
5897 * The bootstrap program loads (via DMA) instructions and data for a new
5898 * program from host DRAM locations indicated by the host driver in the
5899 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5902 * When initializing the NIC, the host driver points the BSM to the
5903 * "initialize" uCode image. This uCode sets up some internal data, then
5904 * notifies host via "initialize alive" that it is complete.
5906 * The host then replaces the BSM_DRAM_* pointer values to point to the
5907 * normal runtime uCode instructions and a backup uCode data cache buffer
5908 * (filled initially with starting data values for the on-board processor),
5909 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5910 * which begins normal operation.
5912 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5913 * the backup data cache in DRAM before SRAM is powered down.
5915 * When powering back up, the BSM loads the bootstrap program. This reloads
5916 * the runtime uCode instructions and the backup data cache into SRAM,
5917 * and re-launches the runtime uCode from where it left off.
5919 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
5921 __le32 *image = priv->ucode_boot.v_addr;
5922 u32 len = priv->ucode_boot.len;
5932 IWL_DEBUG_INFO("Begin load bsm\n");
5934 /* make sure bootstrap program is no larger than BSM's SRAM size */
5935 if (len > IWL_MAX_BSM_SIZE)
5938 /* Tell bootstrap uCode where to find the "Initialize" uCode
5939 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5940 * NOTE: iwl4965_initialize_alive_start() will replace these values,
5941 * after the "initialize" uCode has run, to point to
5942 * runtime/protocol instructions and backup data cache. */
5943 pinst = priv->ucode_init.p_addr >> 4;
5944 pdata = priv->ucode_init_data.p_addr >> 4;
5945 inst_len = priv->ucode_init.len;
5946 data_len = priv->ucode_init_data.len;
5948 rc = iwl4965_grab_nic_access(priv);
5952 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5953 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5954 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5955 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5957 /* Fill BSM memory with bootstrap instructions */
5958 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5959 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5960 reg_offset += sizeof(u32), image++)
5961 _iwl4965_write_prph(priv, reg_offset,
5962 le32_to_cpu(*image));
5964 rc = iwl4965_verify_bsm(priv);
5966 iwl4965_release_nic_access(priv);
5970 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5971 iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5972 iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5973 RTC_INST_LOWER_BOUND);
5974 iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5976 /* Load bootstrap code into instruction SRAM now,
5977 * to prepare to load "initialize" uCode */
5978 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5979 BSM_WR_CTRL_REG_BIT_START);
5981 /* Wait for load of bootstrap uCode to finish */
5982 for (i = 0; i < 100; i++) {
5983 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5984 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5989 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5991 IWL_ERROR("BSM write did not complete!\n");
5995 /* Enable future boot loads whenever power management unit triggers it
5996 * (e.g. when powering back up after power-save shutdown) */
5997 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5998 BSM_WR_CTRL_REG_BIT_START_EN);
6000 iwl4965_release_nic_access(priv);
6005 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6007 /* Remove all resets to allow NIC to operate */
6008 iwl4965_write32(priv, CSR_RESET, 0);
6013 * iwl4965_read_ucode - Read uCode images from disk file.
6015 * Copy into buffers for card to fetch via bus-mastering
6017 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6019 struct iwl4965_ucode *ucode;
6021 const struct firmware *ucode_raw;
6022 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6025 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6027 /* Ask kernel firmware_class module to get the boot firmware off disk.
6028 * request_firmware() is synchronous, file is in memory on return. */
6029 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6031 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6036 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6037 name, ucode_raw->size);
6039 /* Make sure that we got at least our header! */
6040 if (ucode_raw->size < sizeof(*ucode)) {
6041 IWL_ERROR("File size way too small!\n");
6046 /* Data from ucode file: header followed by uCode images */
6047 ucode = (void *)ucode_raw->data;
6049 ver = le32_to_cpu(ucode->ver);
6050 inst_size = le32_to_cpu(ucode->inst_size);
6051 data_size = le32_to_cpu(ucode->data_size);
6052 init_size = le32_to_cpu(ucode->init_size);
6053 init_data_size = le32_to_cpu(ucode->init_data_size);
6054 boot_size = le32_to_cpu(ucode->boot_size);
6056 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6057 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6059 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6061 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6063 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6065 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6068 /* Verify size of file vs. image size info in file's header */
6069 if (ucode_raw->size < sizeof(*ucode) +
6070 inst_size + data_size + init_size +
6071 init_data_size + boot_size) {
6073 IWL_DEBUG_INFO("uCode file size %d too small\n",
6074 (int)ucode_raw->size);
6079 /* Verify that uCode images will fit in card's SRAM */
6080 if (inst_size > IWL_MAX_INST_SIZE) {
6081 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6087 if (data_size > IWL_MAX_DATA_SIZE) {
6088 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6093 if (init_size > IWL_MAX_INST_SIZE) {
6095 ("uCode init instr len %d too large to fit in\n",
6100 if (init_data_size > IWL_MAX_DATA_SIZE) {
6102 ("uCode init data len %d too large to fit in\n",
6107 if (boot_size > IWL_MAX_BSM_SIZE) {
6109 ("uCode boot instr len %d too large to fit in\n",
6115 /* Allocate ucode buffers for card's bus-master loading ... */
6117 /* Runtime instructions and 2 copies of data:
6118 * 1) unmodified from disk
6119 * 2) backup cache for save/restore during power-downs */
6120 priv->ucode_code.len = inst_size;
6121 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6123 priv->ucode_data.len = data_size;
6124 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6126 priv->ucode_data_backup.len = data_size;
6127 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6129 /* Initialization instructions and data */
6130 if (init_size && init_data_size) {
6131 priv->ucode_init.len = init_size;
6132 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6134 priv->ucode_init_data.len = init_data_size;
6135 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6137 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6141 /* Bootstrap (instructions only, no data) */
6143 priv->ucode_boot.len = boot_size;
6144 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6146 if (!priv->ucode_boot.v_addr)
6150 /* Copy images into buffers for card's bus-master reads ... */
6152 /* Runtime instructions (first block of data in file) */
6153 src = &ucode->data[0];
6154 len = priv->ucode_code.len;
6155 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6156 memcpy(priv->ucode_code.v_addr, src, len);
6157 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6158 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6160 /* Runtime data (2nd block)
6161 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
6162 src = &ucode->data[inst_size];
6163 len = priv->ucode_data.len;
6164 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6165 memcpy(priv->ucode_data.v_addr, src, len);
6166 memcpy(priv->ucode_data_backup.v_addr, src, len);
6168 /* Initialization instructions (3rd block) */
6170 src = &ucode->data[inst_size + data_size];
6171 len = priv->ucode_init.len;
6172 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6174 memcpy(priv->ucode_init.v_addr, src, len);
6177 /* Initialization data (4th block) */
6178 if (init_data_size) {
6179 src = &ucode->data[inst_size + data_size + init_size];
6180 len = priv->ucode_init_data.len;
6181 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6183 memcpy(priv->ucode_init_data.v_addr, src, len);
6186 /* Bootstrap instructions (5th block) */
6187 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6188 len = priv->ucode_boot.len;
6189 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6190 memcpy(priv->ucode_boot.v_addr, src, len);
6192 /* We have our copies now, allow OS release its copies */
6193 release_firmware(ucode_raw);
6197 IWL_ERROR("failed to allocate pci memory\n");
6199 iwl4965_dealloc_ucode_pci(priv);
6202 release_firmware(ucode_raw);
6210 * iwl4965_set_ucode_ptrs - Set uCode address location
6212 * Tell initialization uCode where to find runtime uCode.
6214 * BSM registers initially contain pointers to initialization uCode.
6215 * We need to replace them to load runtime uCode inst and data,
6216 * and to save runtime data when powering down.
6218 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6223 unsigned long flags;
6225 /* bits 35:4 for 4965 */
6226 pinst = priv->ucode_code.p_addr >> 4;
6227 pdata = priv->ucode_data_backup.p_addr >> 4;
6229 spin_lock_irqsave(&priv->lock, flags);
6230 rc = iwl4965_grab_nic_access(priv);
6232 spin_unlock_irqrestore(&priv->lock, flags);
6236 /* Tell bootstrap uCode where to find image to load */
6237 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6238 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6239 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6240 priv->ucode_data.len);
6242 /* Inst bytecount must be last to set up, bit 31 signals uCode
6243 * that all new ptr/size info is in place */
6244 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6245 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6247 iwl4965_release_nic_access(priv);
6249 spin_unlock_irqrestore(&priv->lock, flags);
6251 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6257 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6259 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6261 * The 4965 "initialize" ALIVE reply contains calibration data for:
6262 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6263 * (3945 does not contain this data).
6265 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6267 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6269 /* Check alive response for "valid" sign from uCode */
6270 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6271 /* We had an error bringing up the hardware, so take it
6272 * all the way back down so we can try again */
6273 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6277 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6278 * This is a paranoid check, because we would not have gotten the
6279 * "initialize" alive if code weren't properly loaded. */
6280 if (iwl4965_verify_ucode(priv)) {
6281 /* Runtime instruction load was bad;
6282 * take it all the way back down so we can try again */
6283 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6287 /* Calculate temperature */
6288 priv->temperature = iwl4965_get_temperature(priv);
6290 /* Send pointers to protocol/runtime uCode image ... init code will
6291 * load and launch runtime uCode, which will send us another "Alive"
6293 IWL_DEBUG_INFO("Initialization Alive received.\n");
6294 if (iwl4965_set_ucode_ptrs(priv)) {
6295 /* Runtime instruction load won't happen;
6296 * take it all the way back down so we can try again */
6297 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6303 queue_work(priv->workqueue, &priv->restart);
6308 * iwl4965_alive_start - called after REPLY_ALIVE notification received
6309 * from protocol/runtime uCode (initialization uCode's
6310 * Alive gets handled by iwl4965_init_alive_start()).
6312 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6316 IWL_DEBUG_INFO("Runtime Alive received.\n");
6318 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6319 /* We had an error bringing up the hardware, so take it
6320 * all the way back down so we can try again */
6321 IWL_DEBUG_INFO("Alive failed.\n");
6325 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6326 * This is a paranoid check, because we would not have gotten the
6327 * "runtime" alive if code weren't properly loaded. */
6328 if (iwl4965_verify_ucode(priv)) {
6329 /* Runtime instruction load was bad;
6330 * take it all the way back down so we can try again */
6331 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6335 iwl4965_clear_stations_table(priv);
6337 rc = iwl4965_alive_notify(priv);
6339 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6344 /* After the ALIVE response, we can send host commands to 4965 uCode */
6345 set_bit(STATUS_ALIVE, &priv->status);
6347 /* Clear out the uCode error bit if it is set */
6348 clear_bit(STATUS_FW_ERROR, &priv->status);
6350 if (iwl4965_is_rfkill(priv))
6353 ieee80211_start_queues(priv->hw);
6355 priv->active_rate = priv->rates_mask;
6356 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6358 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6360 if (iwl4965_is_associated(priv)) {
6361 struct iwl4965_rxon_cmd *active_rxon =
6362 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6364 memcpy(&priv->staging_rxon, &priv->active_rxon,
6365 sizeof(priv->staging_rxon));
6366 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6368 /* Initialize our rx_config data */
6369 iwl4965_connection_init_rx_config(priv);
6370 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6373 /* Configure Bluetooth device coexistence support */
6374 iwl4965_send_bt_config(priv);
6376 /* Configure the adapter for unassociated operation */
6377 iwl4965_commit_rxon(priv);
6379 /* At this point, the NIC is initialized and operational */
6380 priv->notif_missed_beacons = 0;
6381 set_bit(STATUS_READY, &priv->status);
6383 iwl4965_rf_kill_ct_config(priv);
6385 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6386 wake_up_interruptible(&priv->wait_command_queue);
6388 if (priv->error_recovering)
6389 iwl4965_error_recovery(priv);
6394 queue_work(priv->workqueue, &priv->restart);
6397 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6399 static void __iwl4965_down(struct iwl4965_priv *priv)
6401 unsigned long flags;
6402 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6403 struct ieee80211_conf *conf = NULL;
6405 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6407 conf = ieee80211_get_hw_conf(priv->hw);
6410 set_bit(STATUS_EXIT_PENDING, &priv->status);
6412 iwl4965_clear_stations_table(priv);
6414 /* Unblock any waiting calls */
6415 wake_up_interruptible_all(&priv->wait_command_queue);
6417 /* Wipe out the EXIT_PENDING status bit if we are not actually
6418 * exiting the module */
6420 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6422 /* stop and reset the on-board processor */
6423 iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6425 /* tell the device to stop sending interrupts */
6426 iwl4965_disable_interrupts(priv);
6428 if (priv->mac80211_registered)
6429 ieee80211_stop_queues(priv->hw);
6431 /* If we have not previously called iwl4965_init() then
6432 * clear all bits but the RF Kill and SUSPEND bits and return */
6433 if (!iwl4965_is_init(priv)) {
6434 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6436 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6438 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6439 STATUS_GEO_CONFIGURED |
6440 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6445 /* ...otherwise clear out all the status bits but the RF Kill and
6446 * SUSPEND bits and continue taking the NIC down. */
6447 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6449 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6451 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6452 STATUS_GEO_CONFIGURED |
6453 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6455 test_bit(STATUS_FW_ERROR, &priv->status) <<
6458 spin_lock_irqsave(&priv->lock, flags);
6459 iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6460 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6461 spin_unlock_irqrestore(&priv->lock, flags);
6463 iwl4965_hw_txq_ctx_stop(priv);
6464 iwl4965_hw_rxq_stop(priv);
6466 spin_lock_irqsave(&priv->lock, flags);
6467 if (!iwl4965_grab_nic_access(priv)) {
6468 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6469 APMG_CLK_VAL_DMA_CLK_RQT);
6470 iwl4965_release_nic_access(priv);
6472 spin_unlock_irqrestore(&priv->lock, flags);
6476 iwl4965_hw_nic_stop_master(priv);
6477 iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6478 iwl4965_hw_nic_reset(priv);
6481 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6483 if (priv->ibss_beacon)
6484 dev_kfree_skb(priv->ibss_beacon);
6485 priv->ibss_beacon = NULL;
6487 /* clear out any free frames */
6488 iwl4965_clear_free_frames(priv);
6491 static void iwl4965_down(struct iwl4965_priv *priv)
6493 mutex_lock(&priv->mutex);
6494 __iwl4965_down(priv);
6495 mutex_unlock(&priv->mutex);
6497 iwl4965_cancel_deferred_work(priv);
6500 #define MAX_HW_RESTARTS 5
6502 static int __iwl4965_up(struct iwl4965_priv *priv)
6506 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6507 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6511 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6512 IWL_WARNING("Radio disabled by SW RF kill (module "
6517 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6518 IWL_ERROR("ucode not available for device bringup\n");
6522 /* If platform's RF_KILL switch is NOT set to KILL */
6523 if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6524 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6525 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6527 set_bit(STATUS_RF_KILL_HW, &priv->status);
6528 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6529 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6534 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6536 rc = iwl4965_hw_nic_init(priv);
6538 IWL_ERROR("Unable to int nic\n");
6542 /* make sure rfkill handshake bits are cleared */
6543 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6544 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6545 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6547 /* clear (again), then enable host interrupts */
6548 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6549 iwl4965_enable_interrupts(priv);
6551 /* really make sure rfkill handshake bits are cleared */
6552 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6553 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6555 /* Copy original ucode data image from disk into backup cache.
6556 * This will be used to initialize the on-board processor's
6557 * data SRAM for a clean start when the runtime program first loads. */
6558 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6559 priv->ucode_data.len);
6561 /* We return success when we resume from suspend and rf_kill is on. */
6562 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6565 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6567 iwl4965_clear_stations_table(priv);
6569 /* load bootstrap state machine,
6570 * load bootstrap program into processor's memory,
6571 * prepare to load the "initialize" uCode */
6572 rc = iwl4965_load_bsm(priv);
6575 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6579 /* start card; "initialize" will load runtime ucode */
6580 iwl4965_nic_start(priv);
6582 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6587 set_bit(STATUS_EXIT_PENDING, &priv->status);
6588 __iwl4965_down(priv);
6590 /* tried to restart and config the device for as long as our
6591 * patience could withstand */
6592 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6597 /*****************************************************************************
6599 * Workqueue callbacks
6601 *****************************************************************************/
6603 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6605 struct iwl4965_priv *priv =
6606 container_of(data, struct iwl4965_priv, init_alive_start.work);
6608 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6611 mutex_lock(&priv->mutex);
6612 iwl4965_init_alive_start(priv);
6613 mutex_unlock(&priv->mutex);
6616 static void iwl4965_bg_alive_start(struct work_struct *data)
6618 struct iwl4965_priv *priv =
6619 container_of(data, struct iwl4965_priv, alive_start.work);
6621 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6624 mutex_lock(&priv->mutex);
6625 iwl4965_alive_start(priv);
6626 mutex_unlock(&priv->mutex);
6629 static void iwl4965_bg_rf_kill(struct work_struct *work)
6631 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6633 wake_up_interruptible(&priv->wait_command_queue);
6635 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6638 mutex_lock(&priv->mutex);
6640 if (!iwl4965_is_rfkill(priv)) {
6641 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6642 "HW and/or SW RF Kill no longer active, restarting "
6644 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6645 queue_work(priv->workqueue, &priv->restart);
6648 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6649 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6650 "disabled by SW switch\n");
6652 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6653 "Kill switch must be turned off for "
6654 "wireless networking to work.\n");
6656 mutex_unlock(&priv->mutex);
6659 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6661 static void iwl4965_bg_scan_check(struct work_struct *data)
6663 struct iwl4965_priv *priv =
6664 container_of(data, struct iwl4965_priv, scan_check.work);
6666 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6669 mutex_lock(&priv->mutex);
6670 if (test_bit(STATUS_SCANNING, &priv->status) ||
6671 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6672 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6673 "Scan completion watchdog resetting adapter (%dms)\n",
6674 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6676 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6677 iwl4965_send_scan_abort(priv);
6679 mutex_unlock(&priv->mutex);
6682 static void iwl4965_bg_request_scan(struct work_struct *data)
6684 struct iwl4965_priv *priv =
6685 container_of(data, struct iwl4965_priv, request_scan);
6686 struct iwl4965_host_cmd cmd = {
6687 .id = REPLY_SCAN_CMD,
6688 .len = sizeof(struct iwl4965_scan_cmd),
6689 .meta.flags = CMD_SIZE_HUGE,
6692 struct iwl4965_scan_cmd *scan;
6693 struct ieee80211_conf *conf = NULL;
6695 enum ieee80211_band band;
6698 conf = ieee80211_get_hw_conf(priv->hw);
6700 mutex_lock(&priv->mutex);
6702 if (!iwl4965_is_ready(priv)) {
6703 IWL_WARNING("request scan called when driver not ready.\n");
6707 /* Make sure the scan wasn't cancelled before this queued work
6708 * was given the chance to run... */
6709 if (!test_bit(STATUS_SCANNING, &priv->status))
6712 /* This should never be called or scheduled if there is currently
6713 * a scan active in the hardware. */
6714 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6715 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6716 "Ignoring second request.\n");
6721 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6722 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6726 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6727 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6731 if (iwl4965_is_rfkill(priv)) {
6732 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6736 if (!test_bit(STATUS_READY, &priv->status)) {
6737 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6741 if (!priv->scan_bands) {
6742 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6747 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6748 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6755 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6757 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6758 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6760 if (iwl4965_is_associated(priv)) {
6763 u32 suspend_time = 100;
6764 u32 scan_suspend_time = 100;
6765 unsigned long flags;
6767 IWL_DEBUG_INFO("Scanning while associated...\n");
6769 spin_lock_irqsave(&priv->lock, flags);
6770 interval = priv->beacon_int;
6771 spin_unlock_irqrestore(&priv->lock, flags);
6773 scan->suspend_time = 0;
6774 scan->max_out_time = cpu_to_le32(200 * 1024);
6776 interval = suspend_time;
6778 extra = (suspend_time / interval) << 22;
6779 scan_suspend_time = (extra |
6780 ((suspend_time % interval) * 1024));
6781 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6782 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6783 scan_suspend_time, interval);
6786 /* We should add the ability for user to lock to PASSIVE ONLY */
6787 if (priv->one_direct_scan) {
6789 ("Kicking off one direct scan for '%s'\n",
6790 iwl4965_escape_essid(priv->direct_ssid,
6791 priv->direct_ssid_len));
6792 scan->direct_scan[0].id = WLAN_EID_SSID;
6793 scan->direct_scan[0].len = priv->direct_ssid_len;
6794 memcpy(scan->direct_scan[0].ssid,
6795 priv->direct_ssid, priv->direct_ssid_len);
6797 } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6798 scan->direct_scan[0].id = WLAN_EID_SSID;
6799 scan->direct_scan[0].len = priv->essid_len;
6800 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6805 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6806 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6807 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6810 switch (priv->scan_bands) {
6812 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6813 scan->tx_cmd.rate_n_flags =
6814 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6815 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6817 scan->good_CRC_th = 0;
6818 band = IEEE80211_BAND_2GHZ;
6822 scan->tx_cmd.rate_n_flags =
6823 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6824 RATE_MCS_ANT_B_MSK);
6825 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6826 band = IEEE80211_BAND_5GHZ;
6830 IWL_WARNING("Invalid scan band count\n");
6834 /* We don't build a direct scan probe request; the uCode will do
6835 * that based on the direct_mask added to each channel entry */
6836 cmd_len = iwl4965_fill_probe_req(priv, band,
6837 (struct ieee80211_mgmt *)scan->data,
6838 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6840 scan->tx_cmd.len = cpu_to_le16(cmd_len);
6841 /* select Rx chains */
6843 /* Force use of chains B and C (0x6) for scan Rx.
6844 * Avoid A (0x1) because of its off-channel reception on A-band.
6845 * MIMO is not used here, but value is required to make uCode happy. */
6846 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6847 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6848 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6849 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6851 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6852 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6856 ("Initiating direct scan for %s.\n",
6857 iwl4965_escape_essid(priv->essid, priv->essid_len));
6859 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6861 scan->channel_count =
6862 iwl4965_get_channels_for_scan(
6863 priv, band, 1, /* active */
6865 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6867 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6868 scan->channel_count * sizeof(struct iwl4965_scan_channel);
6870 scan->len = cpu_to_le16(cmd.len);
6872 set_bit(STATUS_SCAN_HW, &priv->status);
6873 rc = iwl4965_send_cmd_sync(priv, &cmd);
6877 queue_delayed_work(priv->workqueue, &priv->scan_check,
6878 IWL_SCAN_CHECK_WATCHDOG);
6880 mutex_unlock(&priv->mutex);
6884 /* inform mac80211 scan aborted */
6885 queue_work(priv->workqueue, &priv->scan_completed);
6886 mutex_unlock(&priv->mutex);
6889 static void iwl4965_bg_up(struct work_struct *data)
6891 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
6893 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6896 mutex_lock(&priv->mutex);
6898 mutex_unlock(&priv->mutex);
6901 static void iwl4965_bg_restart(struct work_struct *data)
6903 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
6905 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6909 queue_work(priv->workqueue, &priv->up);
6912 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6914 struct iwl4965_priv *priv =
6915 container_of(data, struct iwl4965_priv, rx_replenish);
6917 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6920 mutex_lock(&priv->mutex);
6921 iwl4965_rx_replenish(priv);
6922 mutex_unlock(&priv->mutex);
6925 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6927 static void iwl4965_bg_post_associate(struct work_struct *data)
6929 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
6930 post_associate.work);
6933 struct ieee80211_conf *conf = NULL;
6934 DECLARE_MAC_BUF(mac);
6936 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6937 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6941 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6943 print_mac(mac, priv->active_rxon.bssid_addr));
6946 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6949 mutex_lock(&priv->mutex);
6951 if (!priv->vif || !priv->is_open) {
6952 mutex_unlock(&priv->mutex);
6955 iwl4965_scan_cancel_timeout(priv, 200);
6957 conf = ieee80211_get_hw_conf(priv->hw);
6959 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6960 iwl4965_commit_rxon(priv);
6962 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6963 iwl4965_setup_rxon_timing(priv);
6964 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6965 sizeof(priv->rxon_timing), &priv->rxon_timing);
6967 IWL_WARNING("REPLY_RXON_TIMING failed - "
6968 "Attempting to continue.\n");
6970 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6972 #ifdef CONFIG_IWL4965_HT
6973 if (priv->current_ht_config.is_ht)
6974 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6975 #endif /* CONFIG_IWL4965_HT*/
6976 iwl4965_set_rxon_chain(priv);
6977 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6979 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6980 priv->assoc_id, priv->beacon_int);
6982 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6983 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6985 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6987 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6988 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6989 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6991 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6993 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6994 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6998 iwl4965_commit_rxon(priv);
7000 switch (priv->iw_mode) {
7001 case IEEE80211_IF_TYPE_STA:
7002 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7005 case IEEE80211_IF_TYPE_IBSS:
7007 /* clear out the station table */
7008 iwl4965_clear_stations_table(priv);
7010 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7011 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7012 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7013 iwl4965_send_beacon_cmd(priv);
7018 IWL_ERROR("%s Should not be called in %d mode\n",
7019 __FUNCTION__, priv->iw_mode);
7023 iwl4965_sequence_reset(priv);
7025 #ifdef CONFIG_IWL4965_SENSITIVITY
7026 /* Enable Rx differential gain and sensitivity calibrations */
7027 iwl4965_chain_noise_reset(priv);
7028 priv->start_calib = 1;
7029 #endif /* CONFIG_IWL4965_SENSITIVITY */
7031 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7032 priv->assoc_station_added = 1;
7034 iwl4965_activate_qos(priv, 0);
7036 /* we have just associated, don't start scan too early */
7037 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7038 mutex_unlock(&priv->mutex);
7041 static void iwl4965_bg_abort_scan(struct work_struct *work)
7043 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7045 if (!iwl4965_is_ready(priv))
7048 mutex_lock(&priv->mutex);
7050 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7051 iwl4965_send_scan_abort(priv);
7053 mutex_unlock(&priv->mutex);
7056 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7058 static void iwl4965_bg_scan_completed(struct work_struct *work)
7060 struct iwl4965_priv *priv =
7061 container_of(work, struct iwl4965_priv, scan_completed);
7063 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7065 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7068 if (test_bit(STATUS_CONF_PENDING, &priv->status))
7069 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7071 ieee80211_scan_completed(priv->hw);
7073 /* Since setting the TXPOWER may have been deferred while
7074 * performing the scan, fire one off */
7075 mutex_lock(&priv->mutex);
7076 iwl4965_hw_reg_send_txpower(priv);
7077 mutex_unlock(&priv->mutex);
7080 /*****************************************************************************
7082 * mac80211 entry point functions
7084 *****************************************************************************/
7086 #define UCODE_READY_TIMEOUT (2 * HZ)
7088 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7090 struct iwl4965_priv *priv = hw->priv;
7093 IWL_DEBUG_MAC80211("enter\n");
7095 if (pci_enable_device(priv->pci_dev)) {
7096 IWL_ERROR("Fail to pci_enable_device\n");
7099 pci_restore_state(priv->pci_dev);
7100 pci_enable_msi(priv->pci_dev);
7102 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7105 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7106 goto out_disable_msi;
7109 /* we should be verifying the device is ready to be opened */
7110 mutex_lock(&priv->mutex);
7112 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7113 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7114 * ucode filename and max sizes are card-specific. */
7116 if (!priv->ucode_code.len) {
7117 ret = iwl4965_read_ucode(priv);
7119 IWL_ERROR("Could not read microcode: %d\n", ret);
7120 mutex_unlock(&priv->mutex);
7121 goto out_release_irq;
7125 ret = __iwl4965_up(priv);
7127 mutex_unlock(&priv->mutex);
7130 goto out_release_irq;
7132 IWL_DEBUG_INFO("Start UP work done.\n");
7134 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7137 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7138 * mac80211 will not be run successfully. */
7139 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7140 test_bit(STATUS_READY, &priv->status),
7141 UCODE_READY_TIMEOUT);
7143 if (!test_bit(STATUS_READY, &priv->status)) {
7144 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7145 jiffies_to_msecs(UCODE_READY_TIMEOUT));
7147 goto out_release_irq;
7152 IWL_DEBUG_MAC80211("leave\n");
7156 free_irq(priv->pci_dev->irq, priv);
7158 pci_disable_msi(priv->pci_dev);
7159 pci_disable_device(priv->pci_dev);
7161 IWL_DEBUG_MAC80211("leave - failed\n");
7165 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7167 struct iwl4965_priv *priv = hw->priv;
7169 IWL_DEBUG_MAC80211("enter\n");
7171 if (!priv->is_open) {
7172 IWL_DEBUG_MAC80211("leave - skip\n");
7178 if (iwl4965_is_ready_rf(priv)) {
7179 /* stop mac, cancel any scan request and clear
7180 * RXON_FILTER_ASSOC_MSK BIT
7182 mutex_lock(&priv->mutex);
7183 iwl4965_scan_cancel_timeout(priv, 100);
7184 cancel_delayed_work(&priv->post_associate);
7185 mutex_unlock(&priv->mutex);
7190 flush_workqueue(priv->workqueue);
7191 free_irq(priv->pci_dev->irq, priv);
7192 pci_disable_msi(priv->pci_dev);
7193 pci_save_state(priv->pci_dev);
7194 pci_disable_device(priv->pci_dev);
7196 IWL_DEBUG_MAC80211("leave\n");
7199 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7200 struct ieee80211_tx_control *ctl)
7202 struct iwl4965_priv *priv = hw->priv;
7204 IWL_DEBUG_MAC80211("enter\n");
7206 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7207 IWL_DEBUG_MAC80211("leave - monitor\n");
7211 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7212 ctl->tx_rate->bitrate);
7214 if (iwl4965_tx_skb(priv, skb, ctl))
7215 dev_kfree_skb_any(skb);
7217 IWL_DEBUG_MAC80211("leave\n");
7221 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7222 struct ieee80211_if_init_conf *conf)
7224 struct iwl4965_priv *priv = hw->priv;
7225 unsigned long flags;
7226 DECLARE_MAC_BUF(mac);
7228 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7231 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7235 spin_lock_irqsave(&priv->lock, flags);
7236 priv->vif = conf->vif;
7238 spin_unlock_irqrestore(&priv->lock, flags);
7240 mutex_lock(&priv->mutex);
7242 if (conf->mac_addr) {
7243 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7244 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7247 if (iwl4965_is_ready(priv))
7248 iwl4965_set_mode(priv, conf->type);
7250 mutex_unlock(&priv->mutex);
7252 IWL_DEBUG_MAC80211("leave\n");
7257 * iwl4965_mac_config - mac80211 config callback
7259 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7260 * be set inappropriately and the driver currently sets the hardware up to
7261 * use it whenever needed.
7263 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7265 struct iwl4965_priv *priv = hw->priv;
7266 const struct iwl4965_channel_info *ch_info;
7267 unsigned long flags;
7270 mutex_lock(&priv->mutex);
7271 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7273 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7275 if (!iwl4965_is_ready(priv)) {
7276 IWL_DEBUG_MAC80211("leave - not ready\n");
7281 if (unlikely(!iwl4965_param_disable_hw_scan &&
7282 test_bit(STATUS_SCANNING, &priv->status))) {
7283 IWL_DEBUG_MAC80211("leave - scanning\n");
7284 set_bit(STATUS_CONF_PENDING, &priv->status);
7285 mutex_unlock(&priv->mutex);
7289 spin_lock_irqsave(&priv->lock, flags);
7291 ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7292 ieee80211_frequency_to_channel(conf->channel->center_freq));
7293 if (!is_channel_valid(ch_info)) {
7294 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7295 spin_unlock_irqrestore(&priv->lock, flags);
7300 #ifdef CONFIG_IWL4965_HT
7301 /* if we are switching from ht to 2.4 clear flags
7302 * from any ht related info since 2.4 does not
7304 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7305 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7306 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7309 priv->staging_rxon.flags = 0;
7310 #endif /* CONFIG_IWL4965_HT */
7312 iwl4965_set_rxon_channel(priv, conf->channel->band,
7313 ieee80211_frequency_to_channel(conf->channel->center_freq));
7315 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7317 /* The list of supported rates and rate mask can be different
7318 * for each band; since the band may have changed, reset
7319 * the rate mask to what mac80211 lists */
7320 iwl4965_set_rate(priv);
7322 spin_unlock_irqrestore(&priv->lock, flags);
7324 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7325 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7326 iwl4965_hw_channel_switch(priv, conf->channel);
7331 iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7333 if (!conf->radio_enabled) {
7334 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7338 if (iwl4965_is_rfkill(priv)) {
7339 IWL_DEBUG_MAC80211("leave - RF kill\n");
7344 iwl4965_set_rate(priv);
7346 if (memcmp(&priv->active_rxon,
7347 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7348 iwl4965_commit_rxon(priv);
7350 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7352 IWL_DEBUG_MAC80211("leave\n");
7355 clear_bit(STATUS_CONF_PENDING, &priv->status);
7356 mutex_unlock(&priv->mutex);
7360 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7364 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7367 /* The following should be done only at AP bring up */
7368 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7370 /* RXON - unassoc (to set timing command) */
7371 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7372 iwl4965_commit_rxon(priv);
7375 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7376 iwl4965_setup_rxon_timing(priv);
7377 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7378 sizeof(priv->rxon_timing), &priv->rxon_timing);
7380 IWL_WARNING("REPLY_RXON_TIMING failed - "
7381 "Attempting to continue.\n");
7383 iwl4965_set_rxon_chain(priv);
7385 /* FIXME: what should be the assoc_id for AP? */
7386 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7387 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7388 priv->staging_rxon.flags |=
7389 RXON_FLG_SHORT_PREAMBLE_MSK;
7391 priv->staging_rxon.flags &=
7392 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7394 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7395 if (priv->assoc_capability &
7396 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7397 priv->staging_rxon.flags |=
7398 RXON_FLG_SHORT_SLOT_MSK;
7400 priv->staging_rxon.flags &=
7401 ~RXON_FLG_SHORT_SLOT_MSK;
7403 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7404 priv->staging_rxon.flags &=
7405 ~RXON_FLG_SHORT_SLOT_MSK;
7407 /* restore RXON assoc */
7408 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7409 iwl4965_commit_rxon(priv);
7410 iwl4965_activate_qos(priv, 1);
7411 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7413 iwl4965_send_beacon_cmd(priv);
7415 /* FIXME - we need to add code here to detect a totally new
7416 * configuration, reset the AP, unassoc, rxon timing, assoc,
7417 * clear sta table, add BCAST sta... */
7420 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7421 struct ieee80211_vif *vif,
7422 struct ieee80211_if_conf *conf)
7424 struct iwl4965_priv *priv = hw->priv;
7425 DECLARE_MAC_BUF(mac);
7426 unsigned long flags;
7432 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7433 (!conf->beacon || !conf->ssid_len)) {
7435 ("Leaving in AP mode because HostAPD is not ready.\n");
7439 if (!iwl4965_is_alive(priv))
7442 mutex_lock(&priv->mutex);
7445 IWL_DEBUG_MAC80211("bssid: %s\n",
7446 print_mac(mac, conf->bssid));
7449 * very dubious code was here; the probe filtering flag is never set:
7451 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7452 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7454 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7455 IWL_DEBUG_MAC80211("leave - scanning\n");
7456 mutex_unlock(&priv->mutex);
7460 if (priv->vif != vif) {
7461 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7462 mutex_unlock(&priv->mutex);
7466 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7468 conf->bssid = priv->mac_addr;
7469 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7470 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7471 print_mac(mac, conf->bssid));
7473 if (priv->ibss_beacon)
7474 dev_kfree_skb(priv->ibss_beacon);
7476 priv->ibss_beacon = conf->beacon;
7479 if (iwl4965_is_rfkill(priv))
7482 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7483 !is_multicast_ether_addr(conf->bssid)) {
7484 /* If there is currently a HW scan going on in the background
7485 * then we need to cancel it else the RXON below will fail. */
7486 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7487 IWL_WARNING("Aborted scan still in progress "
7489 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7490 mutex_unlock(&priv->mutex);
7493 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7495 /* TODO: Audit driver for usage of these members and see
7496 * if mac80211 deprecates them (priv->bssid looks like it
7497 * shouldn't be there, but I haven't scanned the IBSS code
7498 * to verify) - jpk */
7499 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7501 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7502 iwl4965_config_ap(priv);
7504 rc = iwl4965_commit_rxon(priv);
7505 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7506 iwl4965_rxon_add_station(
7507 priv, priv->active_rxon.bssid_addr, 1);
7511 iwl4965_scan_cancel_timeout(priv, 100);
7512 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7513 iwl4965_commit_rxon(priv);
7517 spin_lock_irqsave(&priv->lock, flags);
7518 if (!conf->ssid_len)
7519 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7521 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7523 priv->essid_len = conf->ssid_len;
7524 spin_unlock_irqrestore(&priv->lock, flags);
7526 IWL_DEBUG_MAC80211("leave\n");
7527 mutex_unlock(&priv->mutex);
7532 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7533 unsigned int changed_flags,
7534 unsigned int *total_flags,
7535 int mc_count, struct dev_addr_list *mc_list)
7539 * see also iwl4965_connection_init_rx_config
7544 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7545 struct ieee80211_if_init_conf *conf)
7547 struct iwl4965_priv *priv = hw->priv;
7549 IWL_DEBUG_MAC80211("enter\n");
7551 mutex_lock(&priv->mutex);
7553 if (iwl4965_is_ready_rf(priv)) {
7554 iwl4965_scan_cancel_timeout(priv, 100);
7555 cancel_delayed_work(&priv->post_associate);
7556 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7557 iwl4965_commit_rxon(priv);
7559 if (priv->vif == conf->vif) {
7561 memset(priv->bssid, 0, ETH_ALEN);
7562 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7563 priv->essid_len = 0;
7565 mutex_unlock(&priv->mutex);
7567 IWL_DEBUG_MAC80211("leave\n");
7571 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7572 struct ieee80211_vif *vif,
7573 struct ieee80211_bss_conf *bss_conf,
7576 struct iwl4965_priv *priv = hw->priv;
7578 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7579 if (bss_conf->use_short_preamble)
7580 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7582 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7585 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7586 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7587 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7589 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7592 if (changes & BSS_CHANGED_ASSOC) {
7595 * do stuff instead of sniffing assoc resp
7599 if (iwl4965_is_associated(priv))
7600 iwl4965_send_rxon_assoc(priv);
7603 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7606 unsigned long flags;
7607 struct iwl4965_priv *priv = hw->priv;
7609 IWL_DEBUG_MAC80211("enter\n");
7611 mutex_lock(&priv->mutex);
7612 spin_lock_irqsave(&priv->lock, flags);
7614 if (!iwl4965_is_ready_rf(priv)) {
7616 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7620 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7622 IWL_ERROR("ERROR: APs don't scan\n");
7626 /* we don't schedule scan within next_scan_jiffies period */
7627 if (priv->next_scan_jiffies &&
7628 time_after(priv->next_scan_jiffies, jiffies)) {
7632 /* if we just finished scan ask for delay */
7633 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7634 IWL_DELAY_NEXT_SCAN, jiffies)) {
7639 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7640 iwl4965_escape_essid(ssid, len), (int)len);
7642 priv->one_direct_scan = 1;
7643 priv->direct_ssid_len = (u8)
7644 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7645 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7647 priv->one_direct_scan = 0;
7649 rc = iwl4965_scan_initiate(priv);
7651 IWL_DEBUG_MAC80211("leave\n");
7654 spin_unlock_irqrestore(&priv->lock, flags);
7655 mutex_unlock(&priv->mutex);
7660 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7661 const u8 *local_addr, const u8 *addr,
7662 struct ieee80211_key_conf *key)
7664 struct iwl4965_priv *priv = hw->priv;
7665 DECLARE_MAC_BUF(mac);
7669 IWL_DEBUG_MAC80211("enter\n");
7671 if (!iwl4965_param_hwcrypto) {
7672 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7676 if (is_zero_ether_addr(addr))
7677 /* only support pairwise keys */
7680 sta_id = iwl4965_hw_find_station(priv, addr);
7681 if (sta_id == IWL_INVALID_STATION) {
7682 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7683 print_mac(mac, addr));
7687 mutex_lock(&priv->mutex);
7689 iwl4965_scan_cancel_timeout(priv, 100);
7693 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7695 iwl4965_set_rxon_hwcrypto(priv, 1);
7696 iwl4965_commit_rxon(priv);
7697 key->hw_key_idx = sta_id;
7698 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7699 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7703 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7705 iwl4965_set_rxon_hwcrypto(priv, 0);
7706 iwl4965_commit_rxon(priv);
7707 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7714 IWL_DEBUG_MAC80211("leave\n");
7715 mutex_unlock(&priv->mutex);
7720 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7721 const struct ieee80211_tx_queue_params *params)
7723 struct iwl4965_priv *priv = hw->priv;
7724 unsigned long flags;
7727 IWL_DEBUG_MAC80211("enter\n");
7729 if (!iwl4965_is_ready_rf(priv)) {
7730 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7734 if (queue >= AC_NUM) {
7735 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7739 if (!priv->qos_data.qos_enable) {
7740 priv->qos_data.qos_active = 0;
7741 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7744 q = AC_NUM - 1 - queue;
7746 spin_lock_irqsave(&priv->lock, flags);
7748 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7749 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7750 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7751 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7752 cpu_to_le16((params->txop * 32));
7754 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7755 priv->qos_data.qos_active = 1;
7757 spin_unlock_irqrestore(&priv->lock, flags);
7759 mutex_lock(&priv->mutex);
7760 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7761 iwl4965_activate_qos(priv, 1);
7762 else if (priv->assoc_id && iwl4965_is_associated(priv))
7763 iwl4965_activate_qos(priv, 0);
7765 mutex_unlock(&priv->mutex);
7767 IWL_DEBUG_MAC80211("leave\n");
7771 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7772 struct ieee80211_tx_queue_stats *stats)
7774 struct iwl4965_priv *priv = hw->priv;
7776 struct iwl4965_tx_queue *txq;
7777 struct iwl4965_queue *q;
7778 unsigned long flags;
7780 IWL_DEBUG_MAC80211("enter\n");
7782 if (!iwl4965_is_ready_rf(priv)) {
7783 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7787 spin_lock_irqsave(&priv->lock, flags);
7789 for (i = 0; i < AC_NUM; i++) {
7790 txq = &priv->txq[i];
7792 avail = iwl4965_queue_space(q);
7794 stats->data[i].len = q->n_window - avail;
7795 stats->data[i].limit = q->n_window - q->high_mark;
7796 stats->data[i].count = q->n_window;
7799 spin_unlock_irqrestore(&priv->lock, flags);
7801 IWL_DEBUG_MAC80211("leave\n");
7806 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7807 struct ieee80211_low_level_stats *stats)
7809 IWL_DEBUG_MAC80211("enter\n");
7810 IWL_DEBUG_MAC80211("leave\n");
7815 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7817 IWL_DEBUG_MAC80211("enter\n");
7818 IWL_DEBUG_MAC80211("leave\n");
7823 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7825 struct iwl4965_priv *priv = hw->priv;
7826 unsigned long flags;
7828 mutex_lock(&priv->mutex);
7829 IWL_DEBUG_MAC80211("enter\n");
7831 priv->lq_mngr.lq_ready = 0;
7832 #ifdef CONFIG_IWL4965_HT
7833 spin_lock_irqsave(&priv->lock, flags);
7834 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7835 spin_unlock_irqrestore(&priv->lock, flags);
7836 #endif /* CONFIG_IWL4965_HT */
7838 iwl4965_reset_qos(priv);
7840 cancel_delayed_work(&priv->post_associate);
7842 spin_lock_irqsave(&priv->lock, flags);
7844 priv->assoc_capability = 0;
7845 priv->call_post_assoc_from_beacon = 0;
7846 priv->assoc_station_added = 0;
7848 /* new association get rid of ibss beacon skb */
7849 if (priv->ibss_beacon)
7850 dev_kfree_skb(priv->ibss_beacon);
7852 priv->ibss_beacon = NULL;
7854 priv->beacon_int = priv->hw->conf.beacon_int;
7855 priv->timestamp1 = 0;
7856 priv->timestamp0 = 0;
7857 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7858 priv->beacon_int = 0;
7860 spin_unlock_irqrestore(&priv->lock, flags);
7862 if (!iwl4965_is_ready_rf(priv)) {
7863 IWL_DEBUG_MAC80211("leave - not ready\n");
7864 mutex_unlock(&priv->mutex);
7868 /* we are restarting association process
7869 * clear RXON_FILTER_ASSOC_MSK bit
7871 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7872 iwl4965_scan_cancel_timeout(priv, 100);
7873 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7874 iwl4965_commit_rxon(priv);
7877 /* Per mac80211.h: This is only used in IBSS mode... */
7878 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7880 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7881 mutex_unlock(&priv->mutex);
7885 priv->only_active_channel = 0;
7887 iwl4965_set_rate(priv);
7889 mutex_unlock(&priv->mutex);
7891 IWL_DEBUG_MAC80211("leave\n");
7894 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7895 struct ieee80211_tx_control *control)
7897 struct iwl4965_priv *priv = hw->priv;
7898 unsigned long flags;
7900 mutex_lock(&priv->mutex);
7901 IWL_DEBUG_MAC80211("enter\n");
7903 if (!iwl4965_is_ready_rf(priv)) {
7904 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7905 mutex_unlock(&priv->mutex);
7909 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7910 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7911 mutex_unlock(&priv->mutex);
7915 spin_lock_irqsave(&priv->lock, flags);
7917 if (priv->ibss_beacon)
7918 dev_kfree_skb(priv->ibss_beacon);
7920 priv->ibss_beacon = skb;
7924 IWL_DEBUG_MAC80211("leave\n");
7925 spin_unlock_irqrestore(&priv->lock, flags);
7927 iwl4965_reset_qos(priv);
7929 queue_work(priv->workqueue, &priv->post_associate.work);
7931 mutex_unlock(&priv->mutex);
7936 #ifdef CONFIG_IWL4965_HT
7938 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7939 struct iwl4965_priv *priv)
7941 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7942 struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7943 struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7945 IWL_DEBUG_MAC80211("enter: \n");
7947 if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7948 iwl_conf->is_ht = 0;
7952 iwl_conf->is_ht = 1;
7953 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7955 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7956 iwl_conf->sgf |= 0x1;
7957 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7958 iwl_conf->sgf |= 0x2;
7960 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7961 iwl_conf->max_amsdu_size =
7962 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7964 iwl_conf->supported_chan_width =
7965 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7966 iwl_conf->extension_chan_offset =
7967 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7968 /* If no above or below channel supplied disable FAT channel */
7969 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7970 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7971 iwl_conf->supported_chan_width = 0;
7973 iwl_conf->tx_mimo_ps_mode =
7974 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7975 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7977 iwl_conf->control_channel = ht_bss_conf->primary_channel;
7978 iwl_conf->tx_chan_width =
7979 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7980 iwl_conf->ht_protection =
7981 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7982 iwl_conf->non_GF_STA_present =
7983 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7985 IWL_DEBUG_MAC80211("control channel %d\n",
7986 iwl_conf->control_channel);
7987 IWL_DEBUG_MAC80211("leave\n");
7990 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7991 struct ieee80211_conf *conf)
7993 struct iwl4965_priv *priv = hw->priv;
7995 IWL_DEBUG_MAC80211("enter: \n");
7997 iwl4965_ht_info_fill(conf, priv);
7998 iwl4965_set_rxon_chain(priv);
8000 if (priv && priv->assoc_id &&
8001 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8002 unsigned long flags;
8004 spin_lock_irqsave(&priv->lock, flags);
8005 if (priv->beacon_int)
8006 queue_work(priv->workqueue, &priv->post_associate.work);
8008 priv->call_post_assoc_from_beacon = 1;
8009 spin_unlock_irqrestore(&priv->lock, flags);
8012 IWL_DEBUG_MAC80211("leave:\n");
8016 #endif /*CONFIG_IWL4965_HT*/
8018 /*****************************************************************************
8022 *****************************************************************************/
8024 #ifdef CONFIG_IWL4965_DEBUG
8027 * The following adds a new attribute to the sysfs representation
8028 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8029 * used for controlling the debug level.
8031 * See the level definitions in iwl for details.
8034 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8036 return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8038 static ssize_t store_debug_level(struct device_driver *d,
8039 const char *buf, size_t count)
8041 char *p = (char *)buf;
8044 val = simple_strtoul(p, &p, 0);
8046 printk(KERN_INFO DRV_NAME
8047 ": %s is not in hex or decimal form.\n", buf);
8049 iwl4965_debug_level = val;
8051 return strnlen(buf, count);
8054 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8055 show_debug_level, store_debug_level);
8057 #endif /* CONFIG_IWL4965_DEBUG */
8059 static ssize_t show_rf_kill(struct device *d,
8060 struct device_attribute *attr, char *buf)
8063 * 0 - RF kill not enabled
8064 * 1 - SW based RF kill active (sysfs)
8065 * 2 - HW based RF kill active
8066 * 3 - Both HW and SW based RF kill active
8068 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8069 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8070 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8072 return sprintf(buf, "%i\n", val);
8075 static ssize_t store_rf_kill(struct device *d,
8076 struct device_attribute *attr,
8077 const char *buf, size_t count)
8079 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8081 mutex_lock(&priv->mutex);
8082 iwl4965_radio_kill_sw(priv, buf[0] == '1');
8083 mutex_unlock(&priv->mutex);
8088 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8090 static ssize_t show_temperature(struct device *d,
8091 struct device_attribute *attr, char *buf)
8093 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8095 if (!iwl4965_is_alive(priv))
8098 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8101 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8103 static ssize_t show_rs_window(struct device *d,
8104 struct device_attribute *attr,
8107 struct iwl4965_priv *priv = d->driver_data;
8108 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8110 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8112 static ssize_t show_tx_power(struct device *d,
8113 struct device_attribute *attr, char *buf)
8115 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8116 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8119 static ssize_t store_tx_power(struct device *d,
8120 struct device_attribute *attr,
8121 const char *buf, size_t count)
8123 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8124 char *p = (char *)buf;
8127 val = simple_strtoul(p, &p, 10);
8129 printk(KERN_INFO DRV_NAME
8130 ": %s is not in decimal form.\n", buf);
8132 iwl4965_hw_reg_set_txpower(priv, val);
8137 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8139 static ssize_t show_flags(struct device *d,
8140 struct device_attribute *attr, char *buf)
8142 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8144 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8147 static ssize_t store_flags(struct device *d,
8148 struct device_attribute *attr,
8149 const char *buf, size_t count)
8151 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8152 u32 flags = simple_strtoul(buf, NULL, 0);
8154 mutex_lock(&priv->mutex);
8155 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8156 /* Cancel any currently running scans... */
8157 if (iwl4965_scan_cancel_timeout(priv, 100))
8158 IWL_WARNING("Could not cancel scan.\n");
8160 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8162 priv->staging_rxon.flags = cpu_to_le32(flags);
8163 iwl4965_commit_rxon(priv);
8166 mutex_unlock(&priv->mutex);
8171 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8173 static ssize_t show_filter_flags(struct device *d,
8174 struct device_attribute *attr, char *buf)
8176 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8178 return sprintf(buf, "0x%04X\n",
8179 le32_to_cpu(priv->active_rxon.filter_flags));
8182 static ssize_t store_filter_flags(struct device *d,
8183 struct device_attribute *attr,
8184 const char *buf, size_t count)
8186 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8187 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8189 mutex_lock(&priv->mutex);
8190 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8191 /* Cancel any currently running scans... */
8192 if (iwl4965_scan_cancel_timeout(priv, 100))
8193 IWL_WARNING("Could not cancel scan.\n");
8195 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8196 "0x%04X\n", filter_flags);
8197 priv->staging_rxon.filter_flags =
8198 cpu_to_le32(filter_flags);
8199 iwl4965_commit_rxon(priv);
8202 mutex_unlock(&priv->mutex);
8207 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8208 store_filter_flags);
8210 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8212 static ssize_t show_measurement(struct device *d,
8213 struct device_attribute *attr, char *buf)
8215 struct iwl4965_priv *priv = dev_get_drvdata(d);
8216 struct iwl4965_spectrum_notification measure_report;
8217 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8218 u8 *data = (u8 *) & measure_report;
8219 unsigned long flags;
8221 spin_lock_irqsave(&priv->lock, flags);
8222 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8223 spin_unlock_irqrestore(&priv->lock, flags);
8226 memcpy(&measure_report, &priv->measure_report, size);
8227 priv->measurement_status = 0;
8228 spin_unlock_irqrestore(&priv->lock, flags);
8230 while (size && (PAGE_SIZE - len)) {
8231 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8232 PAGE_SIZE - len, 1);
8234 if (PAGE_SIZE - len)
8238 size -= min(size, 16U);
8244 static ssize_t store_measurement(struct device *d,
8245 struct device_attribute *attr,
8246 const char *buf, size_t count)
8248 struct iwl4965_priv *priv = dev_get_drvdata(d);
8249 struct ieee80211_measurement_params params = {
8250 .channel = le16_to_cpu(priv->active_rxon.channel),
8251 .start_time = cpu_to_le64(priv->last_tsf),
8252 .duration = cpu_to_le16(1),
8254 u8 type = IWL_MEASURE_BASIC;
8260 strncpy(buffer, buf, min(sizeof(buffer), count));
8261 channel = simple_strtoul(p, NULL, 0);
8263 params.channel = channel;
8266 while (*p && *p != ' ')
8269 type = simple_strtoul(p + 1, NULL, 0);
8272 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8273 "channel %d (for '%s')\n", type, params.channel, buf);
8274 iwl4965_get_measurement(priv, ¶ms, type);
8279 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8280 show_measurement, store_measurement);
8281 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8283 static ssize_t store_retry_rate(struct device *d,
8284 struct device_attribute *attr,
8285 const char *buf, size_t count)
8287 struct iwl4965_priv *priv = dev_get_drvdata(d);
8289 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8290 if (priv->retry_rate <= 0)
8291 priv->retry_rate = 1;
8296 static ssize_t show_retry_rate(struct device *d,
8297 struct device_attribute *attr, char *buf)
8299 struct iwl4965_priv *priv = dev_get_drvdata(d);
8300 return sprintf(buf, "%d", priv->retry_rate);
8303 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8306 static ssize_t store_power_level(struct device *d,
8307 struct device_attribute *attr,
8308 const char *buf, size_t count)
8310 struct iwl4965_priv *priv = dev_get_drvdata(d);
8314 mode = simple_strtoul(buf, NULL, 0);
8315 mutex_lock(&priv->mutex);
8317 if (!iwl4965_is_ready(priv)) {
8322 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8323 mode = IWL_POWER_AC;
8325 mode |= IWL_POWER_ENABLED;
8327 if (mode != priv->power_mode) {
8328 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8330 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8333 priv->power_mode = mode;
8339 mutex_unlock(&priv->mutex);
8343 #define MAX_WX_STRING 80
8345 /* Values are in microsecond */
8346 static const s32 timeout_duration[] = {
8353 static const s32 period_duration[] = {
8361 static ssize_t show_power_level(struct device *d,
8362 struct device_attribute *attr, char *buf)
8364 struct iwl4965_priv *priv = dev_get_drvdata(d);
8365 int level = IWL_POWER_LEVEL(priv->power_mode);
8368 p += sprintf(p, "%d ", level);
8370 case IWL_POWER_MODE_CAM:
8372 p += sprintf(p, "(AC)");
8374 case IWL_POWER_BATTERY:
8375 p += sprintf(p, "(BATTERY)");
8379 "(Timeout %dms, Period %dms)",
8380 timeout_duration[level - 1] / 1000,
8381 period_duration[level - 1] / 1000);
8384 if (!(priv->power_mode & IWL_POWER_ENABLED))
8385 p += sprintf(p, " OFF\n");
8387 p += sprintf(p, " \n");
8389 return (p - buf + 1);
8393 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8396 static ssize_t show_channels(struct device *d,
8397 struct device_attribute *attr, char *buf)
8399 /* all this shit doesn't belong into sysfs anyway */
8403 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8405 static ssize_t show_statistics(struct device *d,
8406 struct device_attribute *attr, char *buf)
8408 struct iwl4965_priv *priv = dev_get_drvdata(d);
8409 u32 size = sizeof(struct iwl4965_notif_statistics);
8410 u32 len = 0, ofs = 0;
8411 u8 *data = (u8 *) & priv->statistics;
8414 if (!iwl4965_is_alive(priv))
8417 mutex_lock(&priv->mutex);
8418 rc = iwl4965_send_statistics_request(priv);
8419 mutex_unlock(&priv->mutex);
8423 "Error sending statistics request: 0x%08X\n", rc);
8427 while (size && (PAGE_SIZE - len)) {
8428 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8429 PAGE_SIZE - len, 1);
8431 if (PAGE_SIZE - len)
8435 size -= min(size, 16U);
8441 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8443 static ssize_t show_antenna(struct device *d,
8444 struct device_attribute *attr, char *buf)
8446 struct iwl4965_priv *priv = dev_get_drvdata(d);
8448 if (!iwl4965_is_alive(priv))
8451 return sprintf(buf, "%d\n", priv->antenna);
8454 static ssize_t store_antenna(struct device *d,
8455 struct device_attribute *attr,
8456 const char *buf, size_t count)
8459 struct iwl4965_priv *priv = dev_get_drvdata(d);
8464 if (sscanf(buf, "%1i", &ant) != 1) {
8465 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8469 if ((ant >= 0) && (ant <= 2)) {
8470 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8471 priv->antenna = (enum iwl4965_antenna)ant;
8473 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8479 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8481 static ssize_t show_status(struct device *d,
8482 struct device_attribute *attr, char *buf)
8484 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8485 if (!iwl4965_is_alive(priv))
8487 return sprintf(buf, "0x%08x\n", (int)priv->status);
8490 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8492 static ssize_t dump_error_log(struct device *d,
8493 struct device_attribute *attr,
8494 const char *buf, size_t count)
8496 char *p = (char *)buf;
8499 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8501 return strnlen(buf, count);
8504 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8506 static ssize_t dump_event_log(struct device *d,
8507 struct device_attribute *attr,
8508 const char *buf, size_t count)
8510 char *p = (char *)buf;
8513 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8515 return strnlen(buf, count);
8518 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8520 /*****************************************************************************
8522 * driver setup and teardown
8524 *****************************************************************************/
8526 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8528 priv->workqueue = create_workqueue(DRV_NAME);
8530 init_waitqueue_head(&priv->wait_command_queue);
8532 INIT_WORK(&priv->up, iwl4965_bg_up);
8533 INIT_WORK(&priv->restart, iwl4965_bg_restart);
8534 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8535 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8536 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8537 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8538 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8539 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8540 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8541 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8542 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8543 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8545 iwl4965_hw_setup_deferred_work(priv);
8547 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8548 iwl4965_irq_tasklet, (unsigned long)priv);
8551 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8553 iwl4965_hw_cancel_deferred_work(priv);
8555 cancel_delayed_work_sync(&priv->init_alive_start);
8556 cancel_delayed_work(&priv->scan_check);
8557 cancel_delayed_work(&priv->alive_start);
8558 cancel_delayed_work(&priv->post_associate);
8559 cancel_work_sync(&priv->beacon_update);
8562 static struct attribute *iwl4965_sysfs_entries[] = {
8563 &dev_attr_antenna.attr,
8564 &dev_attr_channels.attr,
8565 &dev_attr_dump_errors.attr,
8566 &dev_attr_dump_events.attr,
8567 &dev_attr_flags.attr,
8568 &dev_attr_filter_flags.attr,
8569 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8570 &dev_attr_measurement.attr,
8572 &dev_attr_power_level.attr,
8573 &dev_attr_retry_rate.attr,
8574 &dev_attr_rf_kill.attr,
8575 &dev_attr_rs_window.attr,
8576 &dev_attr_statistics.attr,
8577 &dev_attr_status.attr,
8578 &dev_attr_temperature.attr,
8579 &dev_attr_tx_power.attr,
8584 static struct attribute_group iwl4965_attribute_group = {
8585 .name = NULL, /* put in device directory */
8586 .attrs = iwl4965_sysfs_entries,
8589 static struct ieee80211_ops iwl4965_hw_ops = {
8590 .tx = iwl4965_mac_tx,
8591 .start = iwl4965_mac_start,
8592 .stop = iwl4965_mac_stop,
8593 .add_interface = iwl4965_mac_add_interface,
8594 .remove_interface = iwl4965_mac_remove_interface,
8595 .config = iwl4965_mac_config,
8596 .config_interface = iwl4965_mac_config_interface,
8597 .configure_filter = iwl4965_configure_filter,
8598 .set_key = iwl4965_mac_set_key,
8599 .get_stats = iwl4965_mac_get_stats,
8600 .get_tx_stats = iwl4965_mac_get_tx_stats,
8601 .conf_tx = iwl4965_mac_conf_tx,
8602 .get_tsf = iwl4965_mac_get_tsf,
8603 .reset_tsf = iwl4965_mac_reset_tsf,
8604 .beacon_update = iwl4965_mac_beacon_update,
8605 .bss_info_changed = iwl4965_bss_info_changed,
8606 #ifdef CONFIG_IWL4965_HT
8607 .conf_ht = iwl4965_mac_conf_ht,
8608 .ampdu_action = iwl4965_mac_ampdu_action,
8609 #endif /* CONFIG_IWL4965_HT */
8610 .hw_scan = iwl4965_mac_hw_scan
8613 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8616 struct iwl4965_priv *priv;
8617 struct ieee80211_hw *hw;
8618 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8620 DECLARE_MAC_BUF(mac);
8622 /* Disabling hardware scan means that mac80211 will perform scans
8623 * "the hard way", rather than using device's scan. */
8624 if (iwl4965_param_disable_hw_scan) {
8625 IWL_DEBUG_INFO("Disabling hw_scan\n");
8626 iwl4965_hw_ops.hw_scan = NULL;
8629 if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8630 (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8631 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8632 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8637 /* mac80211 allocates memory for this device instance, including
8638 * space for this driver's private structure */
8639 hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8641 IWL_ERROR("Can not allocate network device\n");
8645 SET_IEEE80211_DEV(hw, &pdev->dev);
8647 hw->rate_control_algorithm = "iwl-4965-rs";
8649 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8654 priv->pci_dev = pdev;
8655 priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8656 #ifdef CONFIG_IWL4965_DEBUG
8657 iwl4965_debug_level = iwl4965_param_debug;
8658 atomic_set(&priv->restrict_refcnt, 0);
8660 priv->retry_rate = 1;
8662 priv->ibss_beacon = NULL;
8664 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8665 * the range of signal quality values that we'll provide.
8666 * Negative values for level/noise indicate that we'll provide dBm.
8667 * For WE, at least, non-0 values here *enable* display of values
8668 * in app (iwconfig). */
8669 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8670 hw->max_noise = -20; /* noise level, negative indicates dBm */
8671 hw->max_signal = 100; /* link quality indication (%) */
8673 /* Tell mac80211 our Tx characteristics */
8674 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8676 /* Default value; 4 EDCA QOS priorities */
8678 #ifdef CONFIG_IWL4965_HT
8679 /* Enhanced value; more queues, to support 11n aggregation */
8681 #endif /* CONFIG_IWL4965_HT */
8683 spin_lock_init(&priv->lock);
8684 spin_lock_init(&priv->power_data.lock);
8685 spin_lock_init(&priv->sta_lock);
8686 spin_lock_init(&priv->hcmd_lock);
8687 spin_lock_init(&priv->lq_mngr.lock);
8689 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8690 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8692 INIT_LIST_HEAD(&priv->free_frames);
8694 mutex_init(&priv->mutex);
8695 if (pci_enable_device(pdev)) {
8697 goto out_ieee80211_free_hw;
8700 pci_set_master(pdev);
8702 /* Clear the driver's (not device's) station table */
8703 iwl4965_clear_stations_table(priv);
8705 priv->data_retry_limit = -1;
8706 priv->ieee_channels = NULL;
8707 priv->ieee_rates = NULL;
8708 priv->band = IEEE80211_BAND_2GHZ;
8710 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8712 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8714 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8715 goto out_pci_disable_device;
8718 pci_set_drvdata(pdev, priv);
8719 err = pci_request_regions(pdev, DRV_NAME);
8721 goto out_pci_disable_device;
8723 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8724 * PCI Tx retries from interfering with C3 CPU state */
8725 pci_write_config_byte(pdev, 0x41, 0x00);
8727 priv->hw_base = pci_iomap(pdev, 0, 0);
8728 if (!priv->hw_base) {
8730 goto out_pci_release_regions;
8733 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8734 (unsigned long long) pci_resource_len(pdev, 0));
8735 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8737 /* Initialize module parameter values here */
8739 /* Disable radio (SW RF KILL) via parameter when loading driver */
8740 if (iwl4965_param_disable) {
8741 set_bit(STATUS_RF_KILL_SW, &priv->status);
8742 IWL_DEBUG_INFO("Radio disabled.\n");
8745 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8748 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8749 priv->valid_antenna = 0x7; /* assume all 3 connected */
8750 priv->ps_mode = IWL_MIMO_PS_NONE;
8752 /* Choose which receivers/antennas to use */
8753 iwl4965_set_rxon_chain(priv);
8756 printk(KERN_INFO DRV_NAME
8757 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8759 /* Device-specific setup */
8760 if (iwl4965_hw_set_hw_setting(priv)) {
8761 IWL_ERROR("failed to set hw settings\n");
8765 if (iwl4965_param_qos_enable)
8766 priv->qos_data.qos_enable = 1;
8768 iwl4965_reset_qos(priv);
8770 priv->qos_data.qos_active = 0;
8771 priv->qos_data.qos_cap.val = 0;
8773 iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8774 iwl4965_setup_deferred_work(priv);
8775 iwl4965_setup_rx_handlers(priv);
8777 priv->rates_mask = IWL_RATES_MASK;
8778 /* If power management is turned on, default to AC mode */
8779 priv->power_mode = IWL_POWER_AC;
8780 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8782 iwl4965_disable_interrupts(priv);
8784 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8786 IWL_ERROR("failed to create sysfs device attributes\n");
8787 goto out_release_irq;
8791 iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8792 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8794 iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8795 err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8796 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8797 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8799 IWL_DEBUG_INFO("Failed to init the card\n");
8800 goto out_remove_sysfs;
8802 /* Read the EEPROM */
8803 err = iwl4965_eeprom_init(priv);
8805 IWL_ERROR("Unable to init EEPROM\n");
8806 goto out_remove_sysfs;
8808 /* MAC Address location in EEPROM same for 3945/4965 */
8809 get_eeprom_mac(priv, priv->mac_addr);
8810 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8811 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8813 err = iwl4965_init_channel_map(priv);
8815 IWL_ERROR("initializing regulatory failed: %d\n", err);
8816 goto out_remove_sysfs;
8819 err = iwl4965_init_geos(priv);
8821 IWL_ERROR("initializing geos failed: %d\n", err);
8822 goto out_free_channel_map;
8825 iwl4965_rate_control_register(priv->hw);
8826 err = ieee80211_register_hw(priv->hw);
8828 IWL_ERROR("Failed to register network device (error %d)\n", err);
8832 priv->hw->conf.beacon_int = 100;
8833 priv->mac80211_registered = 1;
8834 pci_save_state(pdev);
8835 pci_disable_device(pdev);
8840 iwl4965_free_geos(priv);
8841 out_free_channel_map:
8842 iwl4965_free_channel_map(priv);
8844 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8847 destroy_workqueue(priv->workqueue);
8848 priv->workqueue = NULL;
8849 iwl4965_unset_hw_setting(priv);
8852 pci_iounmap(pdev, priv->hw_base);
8853 out_pci_release_regions:
8854 pci_release_regions(pdev);
8855 out_pci_disable_device:
8856 pci_disable_device(pdev);
8857 pci_set_drvdata(pdev, NULL);
8858 out_ieee80211_free_hw:
8859 ieee80211_free_hw(priv->hw);
8864 static void iwl4965_pci_remove(struct pci_dev *pdev)
8866 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8867 struct list_head *p, *q;
8873 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8875 set_bit(STATUS_EXIT_PENDING, &priv->status);
8879 /* Free MAC hash list for ADHOC */
8880 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8881 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8883 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8887 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8889 iwl4965_dealloc_ucode_pci(priv);
8892 iwl4965_rx_queue_free(priv, &priv->rxq);
8893 iwl4965_hw_txq_ctx_free(priv);
8895 iwl4965_unset_hw_setting(priv);
8896 iwl4965_clear_stations_table(priv);
8898 if (priv->mac80211_registered) {
8899 ieee80211_unregister_hw(priv->hw);
8900 iwl4965_rate_control_unregister(priv->hw);
8903 /*netif_stop_queue(dev); */
8904 flush_workqueue(priv->workqueue);
8906 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8907 * priv->workqueue... so we can't take down the workqueue
8909 destroy_workqueue(priv->workqueue);
8910 priv->workqueue = NULL;
8912 pci_iounmap(pdev, priv->hw_base);
8913 pci_release_regions(pdev);
8914 pci_disable_device(pdev);
8915 pci_set_drvdata(pdev, NULL);
8917 iwl4965_free_channel_map(priv);
8918 iwl4965_free_geos(priv);
8920 if (priv->ibss_beacon)
8921 dev_kfree_skb(priv->ibss_beacon);
8923 ieee80211_free_hw(priv->hw);
8928 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8930 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8932 if (priv->is_open) {
8933 set_bit(STATUS_IN_SUSPEND, &priv->status);
8934 iwl4965_mac_stop(priv->hw);
8938 pci_set_power_state(pdev, PCI_D3hot);
8943 static int iwl4965_pci_resume(struct pci_dev *pdev)
8945 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8947 pci_set_power_state(pdev, PCI_D0);
8950 iwl4965_mac_start(priv->hw);
8952 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8956 #endif /* CONFIG_PM */
8958 /*****************************************************************************
8960 * driver and module entry point
8962 *****************************************************************************/
8964 static struct pci_driver iwl4965_driver = {
8966 .id_table = iwl4965_hw_card_ids,
8967 .probe = iwl4965_pci_probe,
8968 .remove = __devexit_p(iwl4965_pci_remove),
8970 .suspend = iwl4965_pci_suspend,
8971 .resume = iwl4965_pci_resume,
8975 static int __init iwl4965_init(void)
8979 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8980 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8981 ret = pci_register_driver(&iwl4965_driver);
8983 IWL_ERROR("Unable to initialize PCI module\n");
8986 #ifdef CONFIG_IWL4965_DEBUG
8987 ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8989 IWL_ERROR("Unable to create driver sysfs file\n");
8990 pci_unregister_driver(&iwl4965_driver);
8998 static void __exit iwl4965_exit(void)
9000 #ifdef CONFIG_IWL4965_DEBUG
9001 driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9003 pci_unregister_driver(&iwl4965_driver);
9006 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9007 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9008 module_param_named(disable, iwl4965_param_disable, int, 0444);
9009 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9010 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9011 MODULE_PARM_DESC(hwcrypto,
9012 "using hardware crypto engine (default 0 [software])\n");
9013 module_param_named(debug, iwl4965_param_debug, int, 0444);
9014 MODULE_PARM_DESC(debug, "debug output mask");
9015 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9016 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9018 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9019 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9022 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9023 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9024 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9025 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9027 module_exit(iwl4965_exit);
9028 module_init(iwl4965_init);