1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 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>
48 #include "iwl-eeprom.h"
52 #include "iwl-helpers.h"
54 #include "iwl-calib.h"
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
57 struct iwl4965_tx_queue *txq);
59 /******************************************************************************
63 ******************************************************************************/
66 * module name, copyright, version, etc.
67 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
72 #ifdef CONFIG_IWLWIFI_DEBUG
78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
84 #define DRV_VERSION IWLWIFI_VERSION VD VS
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_VERSION(DRV_VERSION);
89 MODULE_AUTHOR(DRV_COPYRIGHT);
90 MODULE_LICENSE("GPL");
92 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
94 u16 fc = le16_to_cpu(hdr->frame_control);
95 int hdr_len = ieee80211_get_hdrlen(fc);
97 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
98 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
102 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
103 struct iwl_priv *priv, enum ieee80211_band band)
105 return priv->hw->wiphy->bands[band];
108 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
110 /* Single white space is for Linksys APs */
111 if (essid_len == 1 && essid[0] == ' ')
114 /* Otherwise, if the entire essid is 0, we assume it is hidden */
117 if (essid[essid_len] != '\0')
124 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
126 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
127 const char *s = essid;
130 if (iwl4965_is_empty_essid(essid, essid_len)) {
131 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
135 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
136 while (essid_len--) {
148 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
151 * Theory of operation
153 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
154 * of buffer descriptors, each of which points to one or more data buffers for
155 * the device to read from or fill. Driver and device exchange status of each
156 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
157 * entries in each circular buffer, to protect against confusing empty and full
160 * The device reads or writes the data in the queues via the device's several
161 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
163 * For Tx queue, there are low mark and high mark limits. If, after queuing
164 * the packet for Tx, free space become < low mark, Tx queue stopped. When
165 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
168 * The 4965 operates with up to 17 queues: One receive queue, one transmit
169 * queue (#4) for sending commands to the device firmware, and 15 other
170 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
172 * See more detailed info in iwl-4965-hw.h.
173 ***************************************************/
175 int iwl4965_queue_space(const struct iwl4965_queue *q)
177 int s = q->read_ptr - q->write_ptr;
179 if (q->read_ptr > q->write_ptr)
184 /* keep some reserve to not confuse empty and full situations */
192 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
194 return q->write_ptr > q->read_ptr ?
195 (i >= q->read_ptr && i < q->write_ptr) :
196 !(i < q->read_ptr && i >= q->write_ptr);
199 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
201 /* This is for scan command, the big buffer at end of command array */
203 return q->n_window; /* must be power of 2 */
205 /* Otherwise, use normal size buffers */
206 return index & (q->n_window - 1);
210 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
212 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
213 int count, int slots_num, u32 id)
216 q->n_window = slots_num;
219 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
220 * and iwl_queue_dec_wrap are broken. */
221 BUG_ON(!is_power_of_2(count));
223 /* slots_num must be power-of-two size, otherwise
224 * get_cmd_index is broken. */
225 BUG_ON(!is_power_of_2(slots_num));
227 q->low_mark = q->n_window / 4;
231 q->high_mark = q->n_window / 8;
232 if (q->high_mark < 2)
235 q->write_ptr = q->read_ptr = 0;
241 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
243 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
244 struct iwl4965_tx_queue *txq, u32 id)
246 struct pci_dev *dev = priv->pci_dev;
248 /* Driver private data, only for Tx (not command) queues,
249 * not shared with device. */
250 if (id != IWL_CMD_QUEUE_NUM) {
251 txq->txb = kmalloc(sizeof(txq->txb[0]) *
252 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
254 IWL_ERROR("kmalloc for auxiliary BD "
255 "structures failed\n");
261 /* Circular buffer of transmit frame descriptors (TFDs),
262 * shared with device */
263 txq->bd = pci_alloc_consistent(dev,
264 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
268 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
269 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
286 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
288 int iwl4965_tx_queue_init(struct iwl_priv *priv,
289 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
291 struct pci_dev *dev = priv->pci_dev;
296 * Alloc buffer array for commands (Tx or other types of commands).
297 * For the command queue (#4), allocate command space + one big
298 * command for scan, since scan command is very huge; the system will
299 * not have two scans at the same time, so only one is needed.
300 * For normal Tx queues (all other queues), no super-size command
303 len = sizeof(struct iwl_cmd) * slots_num;
304 if (txq_id == IWL_CMD_QUEUE_NUM)
305 len += IWL_MAX_SCAN_SIZE;
306 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
310 /* Alloc driver data array and TFD circular buffer */
311 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
313 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
317 txq->need_update = 0;
319 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
320 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
321 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
323 /* Initialize queue's high/low-water marks, and head/tail indexes */
324 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
326 /* Tell device where to find queue */
327 iwl4965_hw_tx_queue_init(priv, txq);
333 * iwl4965_tx_queue_free - Deallocate DMA queue.
334 * @txq: Transmit queue to deallocate.
336 * Empty queue by removing and destroying all BD's.
338 * 0-fill, but do not free "txq" descriptor structure.
340 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
342 struct iwl4965_queue *q = &txq->q;
343 struct pci_dev *dev = priv->pci_dev;
349 /* first, empty all BD's */
350 for (; q->write_ptr != q->read_ptr;
351 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
352 iwl4965_hw_txq_free_tfd(priv, txq);
354 len = sizeof(struct iwl_cmd) * q->n_window;
355 if (q->id == IWL_CMD_QUEUE_NUM)
356 len += IWL_MAX_SCAN_SIZE;
358 /* De-alloc array of command/tx buffers */
359 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
361 /* De-alloc circular buffer of TFDs */
363 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
364 txq->q.n_bd, txq->bd, txq->q.dma_addr);
366 /* De-alloc array of per-TFD driver data */
372 /* 0-fill queue descriptor structure */
373 memset(txq, 0, sizeof(*txq));
376 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
378 /*************** STATION TABLE MANAGEMENT ****
379 * mac80211 should be examined to determine if sta_info is duplicating
380 * the functionality provided here
383 /**************************************************************/
385 #if 0 /* temporary disable till we add real remove station */
387 * iwl4965_remove_station - Remove driver's knowledge of station.
389 * NOTE: This does not remove station from device's station table.
391 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
393 int index = IWL_INVALID_STATION;
397 spin_lock_irqsave(&priv->sta_lock, flags);
401 else if (is_broadcast_ether_addr(addr))
402 index = priv->hw_params.bcast_sta_id;
404 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
405 if (priv->stations[i].used &&
406 !compare_ether_addr(priv->stations[i].sta.sta.addr,
412 if (unlikely(index == IWL_INVALID_STATION))
415 if (priv->stations[index].used) {
416 priv->stations[index].used = 0;
417 priv->num_stations--;
420 BUG_ON(priv->num_stations < 0);
423 spin_unlock_irqrestore(&priv->sta_lock, flags);
429 * iwl4965_add_station_flags - Add station to tables in driver and device
431 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
432 int is_ap, u8 flags, void *ht_data)
435 int index = IWL_INVALID_STATION;
436 struct iwl4965_station_entry *station;
437 unsigned long flags_spin;
438 DECLARE_MAC_BUF(mac);
440 spin_lock_irqsave(&priv->sta_lock, flags_spin);
443 else if (is_broadcast_ether_addr(addr))
444 index = priv->hw_params.bcast_sta_id;
446 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
447 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
453 if (!priv->stations[i].used &&
454 index == IWL_INVALID_STATION)
459 /* These two conditions have the same outcome, but keep them separate
460 since they have different meanings */
461 if (unlikely(index == IWL_INVALID_STATION)) {
462 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
466 if (priv->stations[index].used &&
467 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
468 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
473 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
474 station = &priv->stations[index];
476 priv->num_stations++;
478 /* Set up the REPLY_ADD_STA command to send to device */
479 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
480 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
481 station->sta.mode = 0;
482 station->sta.sta.sta_id = index;
483 station->sta.station_flags = 0;
485 #ifdef CONFIG_IWL4965_HT
486 /* BCAST station and IBSS stations do not work in HT mode */
487 if (index != priv->hw_params.bcast_sta_id &&
488 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
489 iwl4965_set_ht_add_station(priv, index,
490 (struct ieee80211_ht_info *) ht_data);
491 #endif /*CONFIG_IWL4965_HT*/
493 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
495 /* Add station to device's station table */
496 iwl4965_send_add_station(priv, &station->sta, flags);
503 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
506 * iwl4965_enqueue_hcmd - enqueue a uCode command
507 * @priv: device private data point
508 * @cmd: a point to the ucode command structure
510 * The function returns < 0 values to indicate the operation is
511 * failed. On success, it turns the index (> 0) of command in the
514 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
516 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
517 struct iwl4965_queue *q = &txq->q;
518 struct iwl4965_tfd_frame *tfd;
520 struct iwl_cmd *out_cmd;
522 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
523 dma_addr_t phys_addr;
527 /* If any of the command structures end up being larger than
528 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
529 * we will need to increase the size of the TFD entries */
530 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
531 !(cmd->meta.flags & CMD_SIZE_HUGE));
533 if (iwl_is_rfkill(priv)) {
534 IWL_DEBUG_INFO("Not sending command - RF KILL");
538 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
539 IWL_ERROR("No space for Tx\n");
543 spin_lock_irqsave(&priv->hcmd_lock, flags);
545 tfd = &txq->bd[q->write_ptr];
546 memset(tfd, 0, sizeof(*tfd));
548 control_flags = (u32 *) tfd;
550 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
551 out_cmd = &txq->cmd[idx];
553 out_cmd->hdr.cmd = cmd->id;
554 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
555 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
557 /* At this point, the out_cmd now has all of the incoming cmd
560 out_cmd->hdr.flags = 0;
561 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
562 INDEX_TO_SEQ(q->write_ptr));
563 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
564 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
566 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
567 offsetof(struct iwl_cmd, hdr);
568 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
570 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
571 "%d bytes at %d[%d]:%d\n",
572 get_cmd_string(out_cmd->hdr.cmd),
573 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
574 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
576 txq->need_update = 1;
578 /* Set up entry in queue's byte count circular buffer */
579 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
581 /* Increment and update queue's write index */
582 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
583 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
585 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
586 return ret ? ret : idx;
589 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
591 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
594 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
596 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
601 * iwl4965_rxon_add_station - add station into station table.
603 * there is only one AP station with id= IWL_AP_ID
604 * NOTE: mutex must be held before calling this fnction
606 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
607 const u8 *addr, int is_ap)
611 /* Add station to device's station table */
612 #ifdef CONFIG_IWL4965_HT
613 struct ieee80211_conf *conf = &priv->hw->conf;
614 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
617 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
618 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
619 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
622 #endif /* CONFIG_IWL4965_HT */
623 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
626 /* Set up default rate scaling table in device's station table */
627 iwl4965_add_station(priv, addr, is_ap);
633 * iwl4965_check_rxon_cmd - validate RXON structure is valid
635 * NOTE: This is really only useful during development and can eventually
636 * be #ifdef'd out once the driver is stable and folks aren't actively
639 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
644 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
645 error |= le32_to_cpu(rxon->flags &
646 (RXON_FLG_TGJ_NARROW_BAND_MSK |
647 RXON_FLG_RADAR_DETECT_MSK));
649 IWL_WARNING("check 24G fields %d | %d\n",
652 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
653 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
655 IWL_WARNING("check 52 fields %d | %d\n",
657 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
659 IWL_WARNING("check 52 CCK %d | %d\n",
662 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
664 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
666 /* make sure basic rates 6Mbps and 1Mbps are supported */
667 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
668 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
670 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
672 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
674 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
676 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
677 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
679 IWL_WARNING("check CCK and short slot %d | %d\n",
682 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
683 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
685 IWL_WARNING("check CCK & auto detect %d | %d\n",
688 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
689 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
691 IWL_WARNING("check TGG and auto detect %d | %d\n",
695 IWL_WARNING("Tuning to channel %d\n",
696 le16_to_cpu(rxon->channel));
699 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
706 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
707 * @priv: staging_rxon is compared to active_rxon
709 * If the RXON structure is changing enough to require a new tune,
710 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
711 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
713 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
716 /* These items are only settable from the full RXON command */
717 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
718 compare_ether_addr(priv->staging_rxon.bssid_addr,
719 priv->active_rxon.bssid_addr) ||
720 compare_ether_addr(priv->staging_rxon.node_addr,
721 priv->active_rxon.node_addr) ||
722 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
723 priv->active_rxon.wlap_bssid_addr) ||
724 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
725 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
726 (priv->staging_rxon.air_propagation !=
727 priv->active_rxon.air_propagation) ||
728 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
729 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
730 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
731 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
732 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
733 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
736 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
737 * be updated with the RXON_ASSOC command -- however only some
738 * flag transitions are allowed using RXON_ASSOC */
740 /* Check if we are not switching bands */
741 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
742 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
745 /* Check if we are switching association toggle */
746 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
747 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
754 * iwl4965_commit_rxon - commit staging_rxon to hardware
756 * The RXON command in staging_rxon is committed to the hardware and
757 * the active_rxon structure is updated with the new data. This
758 * function correctly transitions out of the RXON_ASSOC_MSK state if
759 * a HW tune is required based on the RXON structure changes.
761 static int iwl4965_commit_rxon(struct iwl_priv *priv)
763 /* cast away the const for active_rxon in this function */
764 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
765 DECLARE_MAC_BUF(mac);
768 if (!iwl_is_alive(priv))
771 /* always get timestamp with Rx frame */
772 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
774 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
776 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
780 /* If we don't need to send a full RXON, we can use
781 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
782 * and other flags for the current radio configuration. */
783 if (!iwl4965_full_rxon_required(priv)) {
784 rc = iwl_send_rxon_assoc(priv);
786 IWL_ERROR("Error setting RXON_ASSOC "
787 "configuration (%d).\n", rc);
791 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
796 /* station table will be cleared */
797 priv->assoc_station_added = 0;
799 /* If we are currently associated and the new config requires
800 * an RXON_ASSOC and the new config wants the associated mask enabled,
801 * we must clear the associated from the active configuration
802 * before we apply the new config */
803 if (iwl_is_associated(priv) &&
804 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
805 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
806 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
808 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
809 sizeof(struct iwl4965_rxon_cmd),
812 /* If the mask clearing failed then we set
813 * active_rxon back to what it was previously */
815 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
816 IWL_ERROR("Error clearing ASSOC_MSK on current "
817 "configuration (%d).\n", rc);
822 IWL_DEBUG_INFO("Sending RXON\n"
823 "* with%s RXON_FILTER_ASSOC_MSK\n"
826 ((priv->staging_rxon.filter_flags &
827 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
828 le16_to_cpu(priv->staging_rxon.channel),
829 print_mac(mac, priv->staging_rxon.bssid_addr));
831 iwl4965_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
832 /* Apply the new configuration */
833 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
834 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
836 IWL_ERROR("Error setting new configuration (%d).\n", rc);
840 iwlcore_clear_stations_table(priv);
842 if (!priv->error_recovering)
843 priv->start_calib = 0;
845 iwl_init_sensitivity(priv);
847 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
849 /* If we issue a new RXON command which required a tune then we must
850 * send a new TXPOWER command or we won't be able to Tx any frames */
851 rc = iwl4965_hw_reg_send_txpower(priv);
853 IWL_ERROR("Error setting Tx power (%d).\n", rc);
857 /* Add the broadcast address so we can send broadcast frames */
858 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
859 IWL_INVALID_STATION) {
860 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
864 /* If we have set the ASSOC_MSK and we are in BSS mode then
865 * add the IWL_AP_ID to the station rate table */
866 if (iwl_is_associated(priv) &&
867 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
868 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
869 == IWL_INVALID_STATION) {
870 IWL_ERROR("Error adding AP address for transmit.\n");
873 priv->assoc_station_added = 1;
874 if (priv->default_wep_key &&
875 iwl_send_static_wepkey_cmd(priv, 0))
876 IWL_ERROR("Could not send WEP static key.\n");
882 void iwl4965_update_chain_flags(struct iwl_priv *priv)
885 iwl4965_set_rxon_chain(priv);
886 iwl4965_commit_rxon(priv);
889 static int iwl4965_send_bt_config(struct iwl_priv *priv)
891 struct iwl4965_bt_cmd bt_cmd = {
899 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
900 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
903 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
906 struct iwl4965_rx_packet *res;
907 struct iwl_host_cmd cmd = {
908 .id = REPLY_SCAN_ABORT_CMD,
909 .meta.flags = CMD_WANT_SKB,
912 /* If there isn't a scan actively going on in the hardware
913 * then we are in between scan bands and not actually
914 * actively scanning, so don't send the abort command */
915 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
916 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
920 rc = iwl_send_cmd_sync(priv, &cmd);
922 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
926 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
927 if (res->u.status != CAN_ABORT_STATUS) {
928 /* The scan abort will return 1 for success or
929 * 2 for "failure". A failure condition can be
930 * due to simply not being in an active scan which
931 * can occur if we send the scan abort before we
932 * the microcode has notified us that a scan is
934 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
935 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
936 clear_bit(STATUS_SCAN_HW, &priv->status);
939 dev_kfree_skb_any(cmd.meta.u.skb);
944 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
954 * Use: Sets the device's internal card state to enable, disable, or halt
956 * When in the 'enable' state the card operates as normal.
957 * When in the 'disable' state, the card enters into a low power mode.
958 * When in the 'halt' state, the card is shut down and must be fully
959 * restarted to come back on.
961 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
963 struct iwl_host_cmd cmd = {
964 .id = REPLY_CARD_STATE_CMD,
967 .meta.flags = meta_flag,
970 if (meta_flag & CMD_ASYNC)
971 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
973 return iwl_send_cmd(priv, &cmd);
976 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
977 struct iwl_cmd *cmd, struct sk_buff *skb)
979 struct iwl4965_rx_packet *res = NULL;
982 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
986 res = (struct iwl4965_rx_packet *)skb->data;
987 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
988 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
993 switch (res->u.add_sta.status) {
994 case ADD_STA_SUCCESS_MSK:
1000 /* We didn't cache the SKB; let the caller free it */
1004 int iwl4965_send_add_station(struct iwl_priv *priv,
1005 struct iwl4965_addsta_cmd *sta, u8 flags)
1007 struct iwl4965_rx_packet *res = NULL;
1009 struct iwl_host_cmd cmd = {
1010 .id = REPLY_ADD_STA,
1011 .len = sizeof(struct iwl4965_addsta_cmd),
1012 .meta.flags = flags,
1016 if (flags & CMD_ASYNC)
1017 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1019 cmd.meta.flags |= CMD_WANT_SKB;
1021 rc = iwl_send_cmd(priv, &cmd);
1023 if (rc || (flags & CMD_ASYNC))
1026 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1027 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1028 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1034 switch (res->u.add_sta.status) {
1035 case ADD_STA_SUCCESS_MSK:
1036 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1040 IWL_WARNING("REPLY_ADD_STA failed\n");
1045 priv->alloc_rxb_skb--;
1046 dev_kfree_skb_any(cmd.meta.u.skb);
1051 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1053 struct list_head *element;
1055 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1056 priv->frames_count);
1058 while (!list_empty(&priv->free_frames)) {
1059 element = priv->free_frames.next;
1061 kfree(list_entry(element, struct iwl4965_frame, list));
1062 priv->frames_count--;
1065 if (priv->frames_count) {
1066 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1067 priv->frames_count);
1068 priv->frames_count = 0;
1072 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1074 struct iwl4965_frame *frame;
1075 struct list_head *element;
1076 if (list_empty(&priv->free_frames)) {
1077 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1079 IWL_ERROR("Could not allocate frame!\n");
1083 priv->frames_count++;
1087 element = priv->free_frames.next;
1089 return list_entry(element, struct iwl4965_frame, list);
1092 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1094 memset(frame, 0, sizeof(*frame));
1095 list_add(&frame->list, &priv->free_frames);
1098 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1099 struct ieee80211_hdr *hdr,
1100 const u8 *dest, int left)
1103 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1104 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1105 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1108 if (priv->ibss_beacon->len > left)
1111 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1113 return priv->ibss_beacon->len;
1116 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1120 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1121 i = iwl4965_rates[i].next_ieee) {
1122 if (rate_mask & (1 << i))
1123 return iwl4965_rates[i].plcp;
1126 return IWL_RATE_INVALID;
1129 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1131 struct iwl4965_frame *frame;
1132 unsigned int frame_size;
1136 frame = iwl4965_get_free_frame(priv);
1139 IWL_ERROR("Could not obtain free frame buffer for beacon "
1144 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1145 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1147 if (rate == IWL_INVALID_RATE)
1148 rate = IWL_RATE_6M_PLCP;
1150 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1151 if (rate == IWL_INVALID_RATE)
1152 rate = IWL_RATE_1M_PLCP;
1155 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1157 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1160 iwl4965_free_frame(priv, frame);
1165 /******************************************************************************
1167 * Misc. internal state and helper functions
1169 ******************************************************************************/
1171 static void iwl4965_unset_hw_params(struct iwl_priv *priv)
1173 if (priv->shared_virt)
1174 pci_free_consistent(priv->pci_dev,
1175 sizeof(struct iwl4965_shared),
1181 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1183 * return : set the bit for each supported rate insert in ie
1185 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1186 u16 basic_rate, int *left)
1188 u16 ret_rates = 0, bit;
1193 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1194 if (bit & supported_rate) {
1196 rates[*cnt] = iwl4965_rates[i].ieee |
1197 ((bit & basic_rate) ? 0x80 : 0x00);
1201 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1210 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1212 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1213 enum ieee80211_band band,
1214 struct ieee80211_mgmt *frame,
1215 int left, int is_direct)
1219 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1220 #ifdef CONFIG_IWL4965_HT
1221 const struct ieee80211_supported_band *sband =
1222 iwl4965_get_hw_mode(priv, band);
1223 #endif /* CONFIG_IWL4965_HT */
1225 /* Make sure there is enough space for the probe request,
1226 * two mandatory IEs and the data */
1232 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1233 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1234 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1235 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1236 frame->seq_ctrl = 0;
1238 /* fill in our indirect SSID IE */
1245 pos = &(frame->u.probe_req.variable[0]);
1246 *pos++ = WLAN_EID_SSID;
1249 /* fill in our direct SSID IE... */
1252 left -= 2 + priv->essid_len;
1255 /* ... fill it in... */
1256 *pos++ = WLAN_EID_SSID;
1257 *pos++ = priv->essid_len;
1258 memcpy(pos, priv->essid, priv->essid_len);
1259 pos += priv->essid_len;
1260 len += 2 + priv->essid_len;
1263 /* fill in supported rate */
1269 /* ... fill it in... */
1270 *pos++ = WLAN_EID_SUPP_RATES;
1273 /* exclude 60M rate */
1274 active_rates = priv->rates_mask;
1275 active_rates &= ~IWL_RATE_60M_MASK;
1277 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1279 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1280 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1281 active_rate_basic, &left);
1282 active_rates &= ~ret_rates;
1284 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1285 active_rate_basic, &left);
1286 active_rates &= ~ret_rates;
1290 if (active_rates == 0)
1293 /* fill in supported extended rate */
1298 /* ... fill it in... */
1299 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1301 iwl4965_supported_rate_to_ie(pos, active_rates,
1302 active_rate_basic, &left);
1306 #ifdef CONFIG_IWL4965_HT
1307 if (sband && sband->ht_info.ht_supported) {
1308 struct ieee80211_ht_cap *ht_cap;
1310 *pos++ = WLAN_EID_HT_CAPABILITY;
1311 *pos++ = sizeof(struct ieee80211_ht_cap);
1312 ht_cap = (struct ieee80211_ht_cap *)pos;
1313 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1314 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1315 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1316 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1317 ((sband->ht_info.ampdu_density << 2) &
1318 IEEE80211_HT_CAP_AMPDU_DENSITY);
1319 len += 2 + sizeof(struct ieee80211_ht_cap);
1321 #endif /*CONFIG_IWL4965_HT */
1330 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1331 struct iwl4965_qosparam_cmd *qos)
1334 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1335 sizeof(struct iwl4965_qosparam_cmd), qos);
1338 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1340 unsigned long flags;
1342 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1345 if (!priv->qos_data.qos_enable)
1348 spin_lock_irqsave(&priv->lock, flags);
1349 priv->qos_data.def_qos_parm.qos_flags = 0;
1351 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1352 !priv->qos_data.qos_cap.q_AP.txop_request)
1353 priv->qos_data.def_qos_parm.qos_flags |=
1354 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1355 if (priv->qos_data.qos_active)
1356 priv->qos_data.def_qos_parm.qos_flags |=
1357 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1359 #ifdef CONFIG_IWL4965_HT
1360 if (priv->current_ht_config.is_ht)
1361 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1362 #endif /* CONFIG_IWL4965_HT */
1364 spin_unlock_irqrestore(&priv->lock, flags);
1366 if (force || iwl_is_associated(priv)) {
1367 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1368 priv->qos_data.qos_active,
1369 priv->qos_data.def_qos_parm.qos_flags);
1371 iwl4965_send_qos_params_command(priv,
1372 &(priv->qos_data.def_qos_parm));
1376 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1378 /* Filter incoming packets to determine if they are targeted toward
1379 * this network, discarding packets coming from ourselves */
1380 switch (priv->iw_mode) {
1381 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1382 /* packets from our adapter are dropped (echo) */
1383 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1385 /* {broad,multi}cast packets to our IBSS go through */
1386 if (is_multicast_ether_addr(header->addr1))
1387 return !compare_ether_addr(header->addr3, priv->bssid);
1388 /* packets to our adapter go through */
1389 return !compare_ether_addr(header->addr1, priv->mac_addr);
1390 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1391 /* packets from our adapter are dropped (echo) */
1392 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1394 /* {broad,multi}cast packets to our BSS go through */
1395 if (is_multicast_ether_addr(header->addr1))
1396 return !compare_ether_addr(header->addr2, priv->bssid);
1397 /* packets to our adapter go through */
1398 return !compare_ether_addr(header->addr1, priv->mac_addr);
1406 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1408 static const char *iwl4965_get_tx_fail_reason(u32 status)
1410 switch (status & TX_STATUS_MSK) {
1411 case TX_STATUS_SUCCESS:
1413 TX_STATUS_ENTRY(SHORT_LIMIT);
1414 TX_STATUS_ENTRY(LONG_LIMIT);
1415 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1416 TX_STATUS_ENTRY(MGMNT_ABORT);
1417 TX_STATUS_ENTRY(NEXT_FRAG);
1418 TX_STATUS_ENTRY(LIFE_EXPIRE);
1419 TX_STATUS_ENTRY(DEST_PS);
1420 TX_STATUS_ENTRY(ABORTED);
1421 TX_STATUS_ENTRY(BT_RETRY);
1422 TX_STATUS_ENTRY(STA_INVALID);
1423 TX_STATUS_ENTRY(FRAG_DROPPED);
1424 TX_STATUS_ENTRY(TID_DISABLE);
1425 TX_STATUS_ENTRY(FRAME_FLUSHED);
1426 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1427 TX_STATUS_ENTRY(TX_LOCKED);
1428 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1435 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1437 * NOTE: priv->mutex is not required before calling this function
1439 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1441 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1442 clear_bit(STATUS_SCANNING, &priv->status);
1446 if (test_bit(STATUS_SCANNING, &priv->status)) {
1447 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1448 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1449 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1450 queue_work(priv->workqueue, &priv->abort_scan);
1453 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1455 return test_bit(STATUS_SCANNING, &priv->status);
1462 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1463 * @ms: amount of time to wait (in milliseconds) for scan to abort
1465 * NOTE: priv->mutex must be held before calling this function
1467 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1469 unsigned long now = jiffies;
1472 ret = iwl4965_scan_cancel(priv);
1474 mutex_unlock(&priv->mutex);
1475 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1476 test_bit(STATUS_SCANNING, &priv->status))
1478 mutex_lock(&priv->mutex);
1480 return test_bit(STATUS_SCANNING, &priv->status);
1486 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1488 /* Reset ieee stats */
1490 /* We don't reset the net_device_stats (ieee->stats) on
1493 priv->last_seq_num = -1;
1494 priv->last_frag_num = -1;
1495 priv->last_packet_time = 0;
1497 iwl4965_scan_cancel(priv);
1500 #define MAX_UCODE_BEACON_INTERVAL 4096
1501 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1503 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1506 u16 beacon_factor = 0;
1509 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1510 / MAX_UCODE_BEACON_INTERVAL;
1511 new_val = beacon_val / beacon_factor;
1513 return cpu_to_le16(new_val);
1516 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1518 u64 interval_tm_unit;
1520 unsigned long flags;
1521 struct ieee80211_conf *conf = NULL;
1524 conf = ieee80211_get_hw_conf(priv->hw);
1526 spin_lock_irqsave(&priv->lock, flags);
1527 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1528 priv->rxon_timing.timestamp.dw[0] =
1529 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1531 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1533 tsf = priv->timestamp;
1535 beacon_int = priv->beacon_int;
1536 spin_unlock_irqrestore(&priv->lock, flags);
1538 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1539 if (beacon_int == 0) {
1540 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1541 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1543 priv->rxon_timing.beacon_interval =
1544 cpu_to_le16(beacon_int);
1545 priv->rxon_timing.beacon_interval =
1546 iwl4965_adjust_beacon_interval(
1547 le16_to_cpu(priv->rxon_timing.beacon_interval));
1550 priv->rxon_timing.atim_window = 0;
1552 priv->rxon_timing.beacon_interval =
1553 iwl4965_adjust_beacon_interval(conf->beacon_int);
1554 /* TODO: we need to get atim_window from upper stack
1555 * for now we set to 0 */
1556 priv->rxon_timing.atim_window = 0;
1560 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1561 result = do_div(tsf, interval_tm_unit);
1562 priv->rxon_timing.beacon_init_val =
1563 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1566 ("beacon interval %d beacon timer %d beacon tim %d\n",
1567 le16_to_cpu(priv->rxon_timing.beacon_interval),
1568 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1569 le16_to_cpu(priv->rxon_timing.atim_window));
1572 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1574 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1575 IWL_ERROR("APs don't scan.\n");
1579 if (!iwl_is_ready_rf(priv)) {
1580 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1584 if (test_bit(STATUS_SCANNING, &priv->status)) {
1585 IWL_DEBUG_SCAN("Scan already in progress.\n");
1589 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1590 IWL_DEBUG_SCAN("Scan request while abort pending. "
1595 IWL_DEBUG_INFO("Starting scan...\n");
1596 priv->scan_bands = 2;
1597 set_bit(STATUS_SCANNING, &priv->status);
1598 priv->scan_start = jiffies;
1599 priv->scan_pass_start = priv->scan_start;
1601 queue_work(priv->workqueue, &priv->request_scan);
1607 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1608 enum ieee80211_band band)
1610 if (band == IEEE80211_BAND_5GHZ) {
1611 priv->staging_rxon.flags &=
1612 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1613 | RXON_FLG_CCK_MSK);
1614 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1616 /* Copied from iwl4965_post_associate() */
1617 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1618 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1620 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1622 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1623 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1625 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1626 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1627 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1632 * initialize rxon structure with default values from eeprom
1634 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1636 const struct iwl_channel_info *ch_info;
1638 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1640 switch (priv->iw_mode) {
1641 case IEEE80211_IF_TYPE_AP:
1642 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1645 case IEEE80211_IF_TYPE_STA:
1646 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1647 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1650 case IEEE80211_IF_TYPE_IBSS:
1651 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1652 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1653 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1654 RXON_FILTER_ACCEPT_GRP_MSK;
1657 case IEEE80211_IF_TYPE_MNTR:
1658 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1659 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1660 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1663 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1668 /* TODO: Figure out when short_preamble would be set and cache from
1670 if (!hw_to_local(priv->hw)->short_preamble)
1671 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1673 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1676 ch_info = iwl_get_channel_info(priv, priv->band,
1677 le16_to_cpu(priv->staging_rxon.channel));
1680 ch_info = &priv->channel_info[0];
1683 * in some case A channels are all non IBSS
1684 * in this case force B/G channel
1686 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1687 !(is_channel_ibss(ch_info)))
1688 ch_info = &priv->channel_info[0];
1690 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1691 priv->band = ch_info->band;
1693 iwl4965_set_flags_for_phymode(priv, priv->band);
1695 priv->staging_rxon.ofdm_basic_rates =
1696 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1697 priv->staging_rxon.cck_basic_rates =
1698 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1700 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1701 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1702 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1703 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1704 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1705 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1706 iwl4965_set_rxon_chain(priv);
1709 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1711 if (mode == IEEE80211_IF_TYPE_IBSS) {
1712 const struct iwl_channel_info *ch_info;
1714 ch_info = iwl_get_channel_info(priv,
1716 le16_to_cpu(priv->staging_rxon.channel));
1718 if (!ch_info || !is_channel_ibss(ch_info)) {
1719 IWL_ERROR("channel %d not IBSS channel\n",
1720 le16_to_cpu(priv->staging_rxon.channel));
1725 priv->iw_mode = mode;
1727 iwl4965_connection_init_rx_config(priv);
1728 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1730 iwlcore_clear_stations_table(priv);
1732 /* dont commit rxon if rf-kill is on*/
1733 if (!iwl_is_ready_rf(priv))
1736 cancel_delayed_work(&priv->scan_check);
1737 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1738 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1739 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1743 iwl4965_commit_rxon(priv);
1748 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1749 struct ieee80211_tx_control *ctl,
1750 struct iwl_cmd *cmd,
1751 struct sk_buff *skb_frag,
1754 struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1755 struct iwl_wep_key *wepkey;
1758 BUG_ON(ctl->hw_key->hw_key_idx > 3);
1760 switch (keyinfo->alg) {
1762 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1763 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1764 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1765 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1766 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1770 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1771 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1772 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1773 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1777 wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
1778 cmd->cmd.tx.sec_ctl = 0;
1779 if (priv->default_wep_key) {
1780 /* the WEP key was sent as static */
1781 keyidx = ctl->hw_key->hw_key_idx;
1782 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1784 if (wepkey->key_size == WEP_KEY_LEN_128)
1785 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1787 /* the WEP key was sent as dynamic */
1788 keyidx = keyinfo->keyidx;
1789 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1791 if (keyinfo->keylen == WEP_KEY_LEN_128)
1792 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1795 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1796 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1798 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1799 "with key %d\n", keyidx);
1803 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1809 * handle build REPLY_TX command notification.
1811 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1812 struct iwl_cmd *cmd,
1813 struct ieee80211_tx_control *ctrl,
1814 struct ieee80211_hdr *hdr,
1815 int is_unicast, u8 std_id)
1818 u16 fc = le16_to_cpu(hdr->frame_control);
1819 __le32 tx_flags = cmd->cmd.tx.tx_flags;
1821 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1822 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
1823 tx_flags |= TX_CMD_FLG_ACK_MSK;
1824 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
1825 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1826 if (ieee80211_is_probe_response(fc) &&
1827 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1828 tx_flags |= TX_CMD_FLG_TSF_MSK;
1830 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1831 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1834 if (ieee80211_is_back_request(fc))
1835 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
1838 cmd->cmd.tx.sta_id = std_id;
1839 if (ieee80211_get_morefrag(hdr))
1840 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1842 qc = ieee80211_get_qos_ctrl(hdr);
1844 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
1845 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1847 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1849 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
1850 tx_flags |= TX_CMD_FLG_RTS_MSK;
1851 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1852 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
1853 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1854 tx_flags |= TX_CMD_FLG_CTS_MSK;
1857 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1858 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1860 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1861 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1862 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
1863 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
1864 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
1866 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
1868 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
1871 cmd->cmd.tx.driver_txop = 0;
1872 cmd->cmd.tx.tx_flags = tx_flags;
1873 cmd->cmd.tx.next_frame_len = 0;
1875 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
1877 /* 0 - mgmt, 1 - cnt, 2 - data */
1878 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
1879 priv->tx_stats[idx].cnt++;
1880 priv->tx_stats[idx].bytes += len;
1883 * iwl4965_get_sta_id - Find station's index within station table
1885 * If new IBSS station, create new entry in station table
1887 static int iwl4965_get_sta_id(struct iwl_priv *priv,
1888 struct ieee80211_hdr *hdr)
1891 u16 fc = le16_to_cpu(hdr->frame_control);
1892 DECLARE_MAC_BUF(mac);
1894 /* If this frame is broadcast or management, use broadcast station id */
1895 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1896 is_multicast_ether_addr(hdr->addr1))
1897 return priv->hw_params.bcast_sta_id;
1899 switch (priv->iw_mode) {
1901 /* If we are a client station in a BSS network, use the special
1902 * AP station entry (that's the only station we communicate with) */
1903 case IEEE80211_IF_TYPE_STA:
1906 /* If we are an AP, then find the station, or use BCAST */
1907 case IEEE80211_IF_TYPE_AP:
1908 sta_id = iwl_find_station(priv, hdr->addr1);
1909 if (sta_id != IWL_INVALID_STATION)
1911 return priv->hw_params.bcast_sta_id;
1913 /* If this frame is going out to an IBSS network, find the station,
1914 * or create a new station table entry */
1915 case IEEE80211_IF_TYPE_IBSS:
1916 sta_id = iwl_find_station(priv, hdr->addr1);
1917 if (sta_id != IWL_INVALID_STATION)
1920 /* Create new station table entry */
1921 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
1922 0, CMD_ASYNC, NULL);
1924 if (sta_id != IWL_INVALID_STATION)
1927 IWL_DEBUG_DROP("Station %s not in station map. "
1928 "Defaulting to broadcast...\n",
1929 print_mac(mac, hdr->addr1));
1930 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1931 return priv->hw_params.bcast_sta_id;
1934 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
1935 return priv->hw_params.bcast_sta_id;
1940 * start REPLY_TX command process
1942 static int iwl4965_tx_skb(struct iwl_priv *priv,
1943 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
1945 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1946 struct iwl4965_tfd_frame *tfd;
1948 int txq_id = ctl->queue;
1949 struct iwl4965_tx_queue *txq = NULL;
1950 struct iwl4965_queue *q = NULL;
1951 dma_addr_t phys_addr;
1952 dma_addr_t txcmd_phys;
1953 dma_addr_t scratch_phys;
1954 struct iwl_cmd *out_cmd = NULL;
1955 u16 len, idx, len_org;
1956 u8 id, hdr_len, unicast;
1961 u8 wait_write_ptr = 0;
1962 unsigned long flags;
1965 spin_lock_irqsave(&priv->lock, flags);
1966 if (iwl_is_rfkill(priv)) {
1967 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1972 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
1976 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
1977 IWL_ERROR("ERROR: No TX rate available.\n");
1981 unicast = !is_multicast_ether_addr(hdr->addr1);
1984 fc = le16_to_cpu(hdr->frame_control);
1986 #ifdef CONFIG_IWLWIFI_DEBUG
1987 if (ieee80211_is_auth(fc))
1988 IWL_DEBUG_TX("Sending AUTH frame\n");
1989 else if (ieee80211_is_assoc_request(fc))
1990 IWL_DEBUG_TX("Sending ASSOC frame\n");
1991 else if (ieee80211_is_reassoc_request(fc))
1992 IWL_DEBUG_TX("Sending REASSOC frame\n");
1995 /* drop all data frame if we are not associated */
1996 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
1997 (!iwl_is_associated(priv) ||
1998 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
1999 !priv->assoc_station_added)) {
2000 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2004 spin_unlock_irqrestore(&priv->lock, flags);
2006 hdr_len = ieee80211_get_hdrlen(fc);
2008 /* Find (or create) index into station table for destination station */
2009 sta_id = iwl4965_get_sta_id(priv, hdr);
2010 if (sta_id == IWL_INVALID_STATION) {
2011 DECLARE_MAC_BUF(mac);
2013 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2014 print_mac(mac, hdr->addr1));
2018 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2020 qc = ieee80211_get_qos_ctrl(hdr);
2022 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2023 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2025 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2027 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2029 #ifdef CONFIG_IWL4965_HT
2030 /* aggregation is on for this <sta,tid> */
2031 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2032 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2033 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2034 #endif /* CONFIG_IWL4965_HT */
2037 /* Descriptor for chosen Tx queue */
2038 txq = &priv->txq[txq_id];
2041 spin_lock_irqsave(&priv->lock, flags);
2043 /* Set up first empty TFD within this queue's circular TFD buffer */
2044 tfd = &txq->bd[q->write_ptr];
2045 memset(tfd, 0, sizeof(*tfd));
2046 control_flags = (u32 *) tfd;
2047 idx = get_cmd_index(q, q->write_ptr, 0);
2049 /* Set up driver data for this TFD */
2050 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2051 txq->txb[q->write_ptr].skb[0] = skb;
2052 memcpy(&(txq->txb[q->write_ptr].status.control),
2053 ctl, sizeof(struct ieee80211_tx_control));
2055 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2056 out_cmd = &txq->cmd[idx];
2057 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2058 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2061 * Set up the Tx-command (not MAC!) header.
2062 * Store the chosen Tx queue and TFD index within the sequence field;
2063 * after Tx, uCode's Tx response will return this value so driver can
2064 * locate the frame within the tx queue and do post-tx processing.
2066 out_cmd->hdr.cmd = REPLY_TX;
2067 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2068 INDEX_TO_SEQ(q->write_ptr)));
2070 /* Copy MAC header from skb into command buffer */
2071 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2074 * Use the first empty entry in this queue's command buffer array
2075 * to contain the Tx command and MAC header concatenated together
2076 * (payload data will be in another buffer).
2077 * Size of this varies, due to varying MAC header length.
2078 * If end is not dword aligned, we'll have 2 extra bytes at the end
2079 * of the MAC header (device reads on dword boundaries).
2080 * We'll tell device about this padding later.
2082 len = priv->hw_params.tx_cmd_len +
2083 sizeof(struct iwl_cmd_header) + hdr_len;
2086 len = (len + 3) & ~3;
2093 /* Physical address of this Tx command's header (not MAC header!),
2094 * within command buffer array. */
2095 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2096 offsetof(struct iwl_cmd, hdr);
2098 /* Add buffer containing Tx command and MAC(!) header to TFD's
2100 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2102 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2103 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2105 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2106 * if any (802.11 null frames have no payload). */
2107 len = skb->len - hdr_len;
2109 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2110 len, PCI_DMA_TODEVICE);
2111 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2114 /* Tell 4965 about any 2-byte padding after MAC header */
2116 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2118 /* Total # bytes to be transmitted */
2119 len = (u16)skb->len;
2120 out_cmd->cmd.tx.len = cpu_to_le16(len);
2122 /* TODO need this for burst mode later on */
2123 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2125 /* set is_hcca to 0; it probably will never be implemented */
2126 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2128 iwl_update_tx_stats(priv, fc, len);
2130 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2131 offsetof(struct iwl4965_tx_cmd, scratch);
2132 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2133 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2135 if (!ieee80211_get_morefrag(hdr)) {
2136 txq->need_update = 1;
2138 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2139 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2143 txq->need_update = 0;
2146 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2147 sizeof(out_cmd->cmd.tx));
2149 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2150 ieee80211_get_hdrlen(fc));
2152 /* Set up entry for this TFD in Tx byte-count array */
2153 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
2155 /* Tell device the write index *just past* this latest filled TFD */
2156 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2157 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2158 spin_unlock_irqrestore(&priv->lock, flags);
2163 if ((iwl4965_queue_space(q) < q->high_mark)
2164 && priv->mac80211_registered) {
2165 if (wait_write_ptr) {
2166 spin_lock_irqsave(&priv->lock, flags);
2167 txq->need_update = 1;
2168 iwl4965_tx_queue_update_write_ptr(priv, txq);
2169 spin_unlock_irqrestore(&priv->lock, flags);
2172 ieee80211_stop_queue(priv->hw, ctl->queue);
2178 spin_unlock_irqrestore(&priv->lock, flags);
2183 static void iwl4965_set_rate(struct iwl_priv *priv)
2185 const struct ieee80211_supported_band *hw = NULL;
2186 struct ieee80211_rate *rate;
2189 hw = iwl4965_get_hw_mode(priv, priv->band);
2191 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2195 priv->active_rate = 0;
2196 priv->active_rate_basic = 0;
2198 for (i = 0; i < hw->n_bitrates; i++) {
2199 rate = &(hw->bitrates[i]);
2200 if (rate->hw_value < IWL_RATE_COUNT)
2201 priv->active_rate |= (1 << rate->hw_value);
2204 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2205 priv->active_rate, priv->active_rate_basic);
2208 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2209 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2212 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2213 priv->staging_rxon.cck_basic_rates =
2214 ((priv->active_rate_basic &
2215 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2217 priv->staging_rxon.cck_basic_rates =
2218 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2220 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2221 priv->staging_rxon.ofdm_basic_rates =
2222 ((priv->active_rate_basic &
2223 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2224 IWL_FIRST_OFDM_RATE) & 0xFF;
2226 priv->staging_rxon.ofdm_basic_rates =
2227 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2230 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2232 unsigned long flags;
2234 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2237 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2238 disable_radio ? "OFF" : "ON");
2240 if (disable_radio) {
2241 iwl4965_scan_cancel(priv);
2242 /* FIXME: This is a workaround for AP */
2243 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2244 spin_lock_irqsave(&priv->lock, flags);
2245 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2246 CSR_UCODE_SW_BIT_RFKILL);
2247 spin_unlock_irqrestore(&priv->lock, flags);
2248 /* call the host command only if no hw rf-kill set */
2249 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2251 iwl4965_send_card_state(priv,
2252 CARD_STATE_CMD_DISABLE,
2254 set_bit(STATUS_RF_KILL_SW, &priv->status);
2256 /* make sure mac80211 stop sending Tx frame */
2257 if (priv->mac80211_registered)
2258 ieee80211_stop_queues(priv->hw);
2263 spin_lock_irqsave(&priv->lock, flags);
2264 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2266 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2267 spin_unlock_irqrestore(&priv->lock, flags);
2272 spin_lock_irqsave(&priv->lock, flags);
2273 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2274 if (!iwl_grab_nic_access(priv))
2275 iwl_release_nic_access(priv);
2276 spin_unlock_irqrestore(&priv->lock, flags);
2278 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2279 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2280 "disabled by HW switch\n");
2284 queue_work(priv->workqueue, &priv->restart);
2288 #define IWL_PACKET_RETRY_TIME HZ
2290 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2292 u16 sc = le16_to_cpu(header->seq_ctrl);
2293 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2294 u16 frag = sc & IEEE80211_SCTL_FRAG;
2295 u16 *last_seq, *last_frag;
2296 unsigned long *last_time;
2298 switch (priv->iw_mode) {
2299 case IEEE80211_IF_TYPE_IBSS:{
2300 struct list_head *p;
2301 struct iwl4965_ibss_seq *entry = NULL;
2302 u8 *mac = header->addr2;
2303 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2305 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2306 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2307 if (!compare_ether_addr(entry->mac, mac))
2310 if (p == &priv->ibss_mac_hash[index]) {
2311 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2313 IWL_ERROR("Cannot malloc new mac entry\n");
2316 memcpy(entry->mac, mac, ETH_ALEN);
2317 entry->seq_num = seq;
2318 entry->frag_num = frag;
2319 entry->packet_time = jiffies;
2320 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2323 last_seq = &entry->seq_num;
2324 last_frag = &entry->frag_num;
2325 last_time = &entry->packet_time;
2328 case IEEE80211_IF_TYPE_STA:
2329 last_seq = &priv->last_seq_num;
2330 last_frag = &priv->last_frag_num;
2331 last_time = &priv->last_packet_time;
2336 if ((*last_seq == seq) &&
2337 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2338 if (*last_frag == frag)
2340 if (*last_frag + 1 != frag)
2341 /* out-of-order fragment */
2347 *last_time = jiffies;
2354 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2356 #include "iwl-spectrum.h"
2358 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2359 #define BEACON_TIME_MASK_HIGH 0xFF000000
2360 #define TIME_UNIT 1024
2363 * extended beacon time format
2364 * time in usec will be changed into a 32-bit value in 8:24 format
2365 * the high 1 byte is the beacon counts
2366 * the lower 3 bytes is the time in usec within one beacon interval
2369 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2373 u32 interval = beacon_interval * 1024;
2375 if (!interval || !usec)
2378 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2379 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2381 return (quot << 24) + rem;
2384 /* base is usually what we get from ucode with each received frame,
2385 * the same as HW timer counter counting down
2388 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2390 u32 base_low = base & BEACON_TIME_MASK_LOW;
2391 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2392 u32 interval = beacon_interval * TIME_UNIT;
2393 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2394 (addon & BEACON_TIME_MASK_HIGH);
2396 if (base_low > addon_low)
2397 res += base_low - addon_low;
2398 else if (base_low < addon_low) {
2399 res += interval + base_low - addon_low;
2404 return cpu_to_le32(res);
2407 static int iwl4965_get_measurement(struct iwl_priv *priv,
2408 struct ieee80211_measurement_params *params,
2411 struct iwl4965_spectrum_cmd spectrum;
2412 struct iwl4965_rx_packet *res;
2413 struct iwl_host_cmd cmd = {
2414 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2415 .data = (void *)&spectrum,
2416 .meta.flags = CMD_WANT_SKB,
2418 u32 add_time = le64_to_cpu(params->start_time);
2420 int spectrum_resp_status;
2421 int duration = le16_to_cpu(params->duration);
2423 if (iwl_is_associated(priv))
2425 iwl4965_usecs_to_beacons(
2426 le64_to_cpu(params->start_time) - priv->last_tsf,
2427 le16_to_cpu(priv->rxon_timing.beacon_interval));
2429 memset(&spectrum, 0, sizeof(spectrum));
2431 spectrum.channel_count = cpu_to_le16(1);
2433 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2434 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2435 cmd.len = sizeof(spectrum);
2436 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2438 if (iwl_is_associated(priv))
2439 spectrum.start_time =
2440 iwl4965_add_beacon_time(priv->last_beacon_time,
2442 le16_to_cpu(priv->rxon_timing.beacon_interval));
2444 spectrum.start_time = 0;
2446 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2447 spectrum.channels[0].channel = params->channel;
2448 spectrum.channels[0].type = type;
2449 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2450 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2451 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2453 rc = iwl_send_cmd_sync(priv, &cmd);
2457 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2458 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2459 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2463 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2464 switch (spectrum_resp_status) {
2465 case 0: /* Command will be handled */
2466 if (res->u.spectrum.id != 0xff) {
2468 ("Replaced existing measurement: %d\n",
2469 res->u.spectrum.id);
2470 priv->measurement_status &= ~MEASUREMENT_READY;
2472 priv->measurement_status |= MEASUREMENT_ACTIVE;
2476 case 1: /* Command will not be handled */
2481 dev_kfree_skb_any(cmd.meta.u.skb);
2487 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2488 struct iwl4965_tx_info *tx_sta)
2491 tx_sta->status.ack_signal = 0;
2492 tx_sta->status.excessive_retries = 0;
2493 tx_sta->status.queue_length = 0;
2494 tx_sta->status.queue_number = 0;
2497 ieee80211_tx_status_irqsafe(priv->hw,
2498 tx_sta->skb[0], &(tx_sta->status));
2500 ieee80211_tx_status(priv->hw,
2501 tx_sta->skb[0], &(tx_sta->status));
2503 tx_sta->skb[0] = NULL;
2507 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2509 * When FW advances 'R' index, all entries between old and new 'R' index
2510 * need to be reclaimed. As result, some free space forms. If there is
2511 * enough free space (> low mark), wake the stack that feeds us.
2513 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2515 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2516 struct iwl4965_queue *q = &txq->q;
2519 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2520 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2521 "is out of range [0-%d] %d %d.\n", txq_id,
2522 index, q->n_bd, q->write_ptr, q->read_ptr);
2526 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2527 q->read_ptr != index;
2528 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2529 if (txq_id != IWL_CMD_QUEUE_NUM) {
2530 iwl4965_txstatus_to_ieee(priv,
2531 &(txq->txb[txq->q.read_ptr]));
2532 iwl4965_hw_txq_free_tfd(priv, txq);
2533 } else if (nfreed > 1) {
2534 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2535 q->write_ptr, q->read_ptr);
2536 queue_work(priv->workqueue, &priv->restart);
2541 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2542 (txq_id != IWL_CMD_QUEUE_NUM) &&
2543 priv->mac80211_registered)
2544 ieee80211_wake_queue(priv->hw, txq_id); */
2550 static int iwl4965_is_tx_success(u32 status)
2552 status &= TX_STATUS_MSK;
2553 return (status == TX_STATUS_SUCCESS)
2554 || (status == TX_STATUS_DIRECT_DONE);
2557 /******************************************************************************
2559 * Generic RX handler implementations
2561 ******************************************************************************/
2562 #ifdef CONFIG_IWL4965_HT
2564 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2565 struct ieee80211_hdr *hdr)
2567 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2570 u8 *da = ieee80211_get_DA(hdr);
2571 return iwl_find_station(priv, da);
2575 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2576 struct iwl_priv *priv, int txq_id, int idx)
2578 if (priv->txq[txq_id].txb[idx].skb[0])
2579 return (struct ieee80211_hdr *)priv->txq[txq_id].
2580 txb[idx].skb[0]->data;
2584 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2586 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2587 tx_resp->frame_count);
2588 return le32_to_cpu(*scd_ssn) & MAX_SN;
2593 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2595 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2596 struct iwl4965_ht_agg *agg,
2597 struct iwl4965_tx_resp_agg *tx_resp,
2601 struct agg_tx_status *frame_status = &tx_resp->status;
2602 struct ieee80211_tx_status *tx_status = NULL;
2603 struct ieee80211_hdr *hdr = NULL;
2608 if (agg->wait_for_ba)
2609 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2611 agg->frame_count = tx_resp->frame_count;
2612 agg->start_idx = start_idx;
2613 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2616 /* # frames attempted by Tx command */
2617 if (agg->frame_count == 1) {
2618 /* Only one frame was attempted; no block-ack will arrive */
2619 status = le16_to_cpu(frame_status[0].status);
2620 seq = le16_to_cpu(frame_status[0].sequence);
2621 idx = SEQ_TO_INDEX(seq);
2622 txq_id = SEQ_TO_QUEUE(seq);
2624 /* FIXME: code repetition */
2625 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2626 agg->frame_count, agg->start_idx, idx);
2628 tx_status = &(priv->txq[txq_id].txb[idx].status);
2629 tx_status->retry_count = tx_resp->failure_frame;
2630 tx_status->queue_number = status & 0xff;
2631 tx_status->queue_length = tx_resp->failure_rts;
2632 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2633 tx_status->flags = iwl4965_is_tx_success(status)?
2634 IEEE80211_TX_STATUS_ACK : 0;
2635 iwl4965_hwrate_to_tx_control(priv,
2636 le32_to_cpu(tx_resp->rate_n_flags),
2637 &tx_status->control);
2638 /* FIXME: code repetition end */
2640 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2641 status & 0xff, tx_resp->failure_frame);
2642 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2643 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2645 agg->wait_for_ba = 0;
2647 /* Two or more frames were attempted; expect block-ack */
2649 int start = agg->start_idx;
2651 /* Construct bit-map of pending frames within Tx window */
2652 for (i = 0; i < agg->frame_count; i++) {
2654 status = le16_to_cpu(frame_status[i].status);
2655 seq = le16_to_cpu(frame_status[i].sequence);
2656 idx = SEQ_TO_INDEX(seq);
2657 txq_id = SEQ_TO_QUEUE(seq);
2659 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2660 AGG_TX_STATE_ABORT_MSK))
2663 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2664 agg->frame_count, txq_id, idx);
2666 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2668 sc = le16_to_cpu(hdr->seq_ctrl);
2669 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2670 IWL_ERROR("BUG_ON idx doesn't match seq control"
2671 " idx=%d, seq_idx=%d, seq=%d\n",
2677 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2678 i, idx, SEQ_TO_SN(sc));
2682 sh = (start - idx) + 0xff;
2683 bitmap = bitmap << sh;
2686 } else if (sh < -64)
2687 sh = 0xff - (start - idx);
2691 bitmap = bitmap << sh;
2694 bitmap |= (1 << sh);
2695 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2696 start, (u32)(bitmap & 0xFFFFFFFF));
2699 agg->bitmap = bitmap;
2700 agg->start_idx = start;
2701 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2702 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2703 agg->frame_count, agg->start_idx,
2704 (unsigned long long)agg->bitmap);
2707 agg->wait_for_ba = 1;
2714 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2716 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2717 struct iwl4965_rx_mem_buffer *rxb)
2719 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2720 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2721 int txq_id = SEQ_TO_QUEUE(sequence);
2722 int index = SEQ_TO_INDEX(sequence);
2723 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2724 struct ieee80211_tx_status *tx_status;
2725 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2726 u32 status = le32_to_cpu(tx_resp->status);
2727 #ifdef CONFIG_IWL4965_HT
2728 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2729 struct ieee80211_hdr *hdr;
2733 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2734 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2735 "is out of range [0-%d] %d %d\n", txq_id,
2736 index, txq->q.n_bd, txq->q.write_ptr,
2741 #ifdef CONFIG_IWL4965_HT
2742 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2743 qc = ieee80211_get_qos_ctrl(hdr);
2746 tid = le16_to_cpu(*qc) & 0xf;
2748 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2749 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2750 IWL_ERROR("Station not known\n");
2754 if (txq->sched_retry) {
2755 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2756 struct iwl4965_ht_agg *agg = NULL;
2761 agg = &priv->stations[sta_id].tid[tid].agg;
2763 iwl4965_tx_status_reply_tx(priv, agg,
2764 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2766 if ((tx_resp->frame_count == 1) &&
2767 !iwl4965_is_tx_success(status)) {
2768 /* TODO: send BAR */
2771 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2773 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2774 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2775 "%d index %d\n", scd_ssn , index);
2776 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2777 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2779 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2780 txq_id >= 0 && priv->mac80211_registered &&
2781 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2782 ieee80211_wake_queue(priv->hw, txq_id);
2784 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2787 #endif /* CONFIG_IWL4965_HT */
2788 tx_status = &(txq->txb[txq->q.read_ptr].status);
2790 tx_status->retry_count = tx_resp->failure_frame;
2791 tx_status->queue_number = status;
2792 tx_status->queue_length = tx_resp->bt_kill_count;
2793 tx_status->queue_length |= tx_resp->failure_rts;
2795 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
2796 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
2797 &tx_status->control);
2799 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2800 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
2801 status, le32_to_cpu(tx_resp->rate_n_flags),
2802 tx_resp->failure_frame);
2804 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
2806 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
2807 #ifdef CONFIG_IWL4965_HT
2808 if (tid != MAX_TID_COUNT)
2809 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2810 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
2812 priv->mac80211_registered)
2813 ieee80211_wake_queue(priv->hw, txq_id);
2814 if (tid != MAX_TID_COUNT)
2815 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
2818 #ifdef CONFIG_IWL4965_HT
2820 #endif /* CONFIG_IWL4965_HT */
2822 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2823 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2827 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
2828 struct iwl4965_rx_mem_buffer *rxb)
2830 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2831 struct iwl4965_alive_resp *palive;
2832 struct delayed_work *pwork;
2834 palive = &pkt->u.alive_frame;
2836 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2838 palive->is_valid, palive->ver_type,
2839 palive->ver_subtype);
2841 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2842 IWL_DEBUG_INFO("Initialization Alive received.\n");
2843 memcpy(&priv->card_alive_init,
2844 &pkt->u.alive_frame,
2845 sizeof(struct iwl4965_init_alive_resp));
2846 pwork = &priv->init_alive_start;
2848 IWL_DEBUG_INFO("Runtime Alive received.\n");
2849 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2850 sizeof(struct iwl4965_alive_resp));
2851 pwork = &priv->alive_start;
2854 /* We delay the ALIVE response by 5ms to
2855 * give the HW RF Kill time to activate... */
2856 if (palive->is_valid == UCODE_VALID_OK)
2857 queue_delayed_work(priv->workqueue, pwork,
2858 msecs_to_jiffies(5));
2860 IWL_WARNING("uCode did not respond OK.\n");
2863 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
2864 struct iwl4965_rx_mem_buffer *rxb)
2866 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2868 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2872 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
2873 struct iwl4965_rx_mem_buffer *rxb)
2875 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2877 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2878 "seq 0x%04X ser 0x%08X\n",
2879 le32_to_cpu(pkt->u.err_resp.error_type),
2880 get_cmd_string(pkt->u.err_resp.cmd_id),
2881 pkt->u.err_resp.cmd_id,
2882 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2883 le32_to_cpu(pkt->u.err_resp.error_info));
2886 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2888 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
2890 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2891 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
2892 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2893 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2894 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2895 rxon->channel = csa->channel;
2896 priv->staging_rxon.channel = csa->channel;
2899 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2900 struct iwl4965_rx_mem_buffer *rxb)
2902 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2903 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2904 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2906 if (!report->state) {
2907 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2908 "Spectrum Measure Notification: Start\n");
2912 memcpy(&priv->measure_report, report, sizeof(*report));
2913 priv->measurement_status |= MEASUREMENT_READY;
2917 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2918 struct iwl4965_rx_mem_buffer *rxb)
2920 #ifdef CONFIG_IWLWIFI_DEBUG
2921 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2922 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2923 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2924 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2928 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2929 struct iwl4965_rx_mem_buffer *rxb)
2931 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2932 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2933 "notification for %s:\n",
2934 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2935 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2938 static void iwl4965_bg_beacon_update(struct work_struct *work)
2940 struct iwl_priv *priv =
2941 container_of(work, struct iwl_priv, beacon_update);
2942 struct sk_buff *beacon;
2944 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2945 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2948 IWL_ERROR("update beacon failed\n");
2952 mutex_lock(&priv->mutex);
2953 /* new beacon skb is allocated every time; dispose previous.*/
2954 if (priv->ibss_beacon)
2955 dev_kfree_skb(priv->ibss_beacon);
2957 priv->ibss_beacon = beacon;
2958 mutex_unlock(&priv->mutex);
2960 iwl4965_send_beacon_cmd(priv);
2963 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2964 struct iwl4965_rx_mem_buffer *rxb)
2966 #ifdef CONFIG_IWLWIFI_DEBUG
2967 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2968 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2969 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2971 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2972 "tsf %d %d rate %d\n",
2973 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2974 beacon->beacon_notify_hdr.failure_frame,
2975 le32_to_cpu(beacon->ibss_mgr_status),
2976 le32_to_cpu(beacon->high_tsf),
2977 le32_to_cpu(beacon->low_tsf), rate);
2980 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2981 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2982 queue_work(priv->workqueue, &priv->beacon_update);
2985 /* Service response to REPLY_SCAN_CMD (0x80) */
2986 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2987 struct iwl4965_rx_mem_buffer *rxb)
2989 #ifdef CONFIG_IWLWIFI_DEBUG
2990 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2991 struct iwl4965_scanreq_notification *notif =
2992 (struct iwl4965_scanreq_notification *)pkt->u.raw;
2994 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2998 /* Service SCAN_START_NOTIFICATION (0x82) */
2999 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3000 struct iwl4965_rx_mem_buffer *rxb)
3002 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3003 struct iwl4965_scanstart_notification *notif =
3004 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3005 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3006 IWL_DEBUG_SCAN("Scan start: "
3008 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3010 notif->band ? "bg" : "a",
3012 notif->tsf_low, notif->status, notif->beacon_timer);
3015 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3016 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3017 struct iwl4965_rx_mem_buffer *rxb)
3019 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3020 struct iwl4965_scanresults_notification *notif =
3021 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3023 IWL_DEBUG_SCAN("Scan ch.res: "
3025 "(TSF: 0x%08X:%08X) - %d "
3026 "elapsed=%lu usec (%dms since last)\n",
3028 notif->band ? "bg" : "a",
3029 le32_to_cpu(notif->tsf_high),
3030 le32_to_cpu(notif->tsf_low),
3031 le32_to_cpu(notif->statistics[0]),
3032 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3033 jiffies_to_msecs(elapsed_jiffies
3034 (priv->last_scan_jiffies, jiffies)));
3036 priv->last_scan_jiffies = jiffies;
3037 priv->next_scan_jiffies = 0;
3040 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3041 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3042 struct iwl4965_rx_mem_buffer *rxb)
3044 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3045 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3047 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3048 scan_notif->scanned_channels,
3049 scan_notif->tsf_low,
3050 scan_notif->tsf_high, scan_notif->status);
3052 /* The HW is no longer scanning */
3053 clear_bit(STATUS_SCAN_HW, &priv->status);
3055 /* The scan completion notification came in, so kill that timer... */
3056 cancel_delayed_work(&priv->scan_check);
3058 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3059 (priv->scan_bands == 2) ? "2.4" : "5.2",
3060 jiffies_to_msecs(elapsed_jiffies
3061 (priv->scan_pass_start, jiffies)));
3063 /* Remove this scanned band from the list
3064 * of pending bands to scan */
3067 /* If a request to abort was given, or the scan did not succeed
3068 * then we reset the scan state machine and terminate,
3069 * re-queuing another scan if one has been requested */
3070 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3071 IWL_DEBUG_INFO("Aborted scan completed.\n");
3072 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3074 /* If there are more bands on this scan pass reschedule */
3075 if (priv->scan_bands > 0)
3079 priv->last_scan_jiffies = jiffies;
3080 priv->next_scan_jiffies = 0;
3081 IWL_DEBUG_INFO("Setting scan to off\n");
3083 clear_bit(STATUS_SCANNING, &priv->status);
3085 IWL_DEBUG_INFO("Scan took %dms\n",
3086 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3088 queue_work(priv->workqueue, &priv->scan_completed);
3093 priv->scan_pass_start = jiffies;
3094 queue_work(priv->workqueue, &priv->request_scan);
3097 /* Handle notification from uCode that card's power state is changing
3098 * due to software, hardware, or critical temperature RFKILL */
3099 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3100 struct iwl4965_rx_mem_buffer *rxb)
3102 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3103 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3104 unsigned long status = priv->status;
3106 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3107 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3108 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3110 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3111 RF_CARD_DISABLED)) {
3113 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3114 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3116 if (!iwl_grab_nic_access(priv)) {
3118 priv, HBUS_TARG_MBX_C,
3119 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3121 iwl_release_nic_access(priv);
3124 if (!(flags & RXON_CARD_DISABLED)) {
3125 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3126 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3127 if (!iwl_grab_nic_access(priv)) {
3129 priv, HBUS_TARG_MBX_C,
3130 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3132 iwl_release_nic_access(priv);
3136 if (flags & RF_CARD_DISABLED) {
3137 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3138 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3139 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3140 if (!iwl_grab_nic_access(priv))
3141 iwl_release_nic_access(priv);
3145 if (flags & HW_CARD_DISABLED)
3146 set_bit(STATUS_RF_KILL_HW, &priv->status);
3148 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3151 if (flags & SW_CARD_DISABLED)
3152 set_bit(STATUS_RF_KILL_SW, &priv->status);
3154 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3156 if (!(flags & RXON_CARD_DISABLED))
3157 iwl4965_scan_cancel(priv);
3159 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3160 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3161 (test_bit(STATUS_RF_KILL_SW, &status) !=
3162 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3163 queue_work(priv->workqueue, &priv->rf_kill);
3165 wake_up_interruptible(&priv->wait_command_queue);
3169 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3171 * Setup the RX handlers for each of the reply types sent from the uCode
3174 * This function chains into the hardware specific files for them to setup
3175 * any hardware specific handlers as well.
3177 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3179 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3180 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3181 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3182 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3183 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3184 iwl4965_rx_spectrum_measure_notif;
3185 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3186 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3187 iwl4965_rx_pm_debug_statistics_notif;
3188 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3191 * The same handler is used for both the REPLY to a discrete
3192 * statistics request from the host as well as for the periodic
3193 * statistics notifications (after received beacons) from the uCode.
3195 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3196 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3198 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3199 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3200 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3201 iwl4965_rx_scan_results_notif;
3202 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3203 iwl4965_rx_scan_complete_notif;
3204 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3205 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3207 /* Set up hardware specific Rx handlers */
3208 iwl4965_hw_rx_handler_setup(priv);
3212 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3213 * @rxb: Rx buffer to reclaim
3215 * If an Rx buffer has an async callback associated with it the callback
3216 * will be executed. The attached skb (if present) will only be freed
3217 * if the callback returns 1
3219 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3220 struct iwl4965_rx_mem_buffer *rxb)
3222 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3223 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3224 int txq_id = SEQ_TO_QUEUE(sequence);
3225 int index = SEQ_TO_INDEX(sequence);
3226 int huge = sequence & SEQ_HUGE_FRAME;
3228 struct iwl_cmd *cmd;
3230 /* If a Tx command is being handled and it isn't in the actual
3231 * command queue then there a command routing bug has been introduced
3232 * in the queue management code. */
3233 if (txq_id != IWL_CMD_QUEUE_NUM)
3234 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3235 txq_id, pkt->hdr.cmd);
3236 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3238 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3239 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3241 /* Input error checking is done when commands are added to queue. */
3242 if (cmd->meta.flags & CMD_WANT_SKB) {
3243 cmd->meta.source->u.skb = rxb->skb;
3245 } else if (cmd->meta.u.callback &&
3246 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3249 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3251 if (!(cmd->meta.flags & CMD_ASYNC)) {
3252 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3253 wake_up_interruptible(&priv->wait_command_queue);
3257 /************************** RX-FUNCTIONS ****************************/
3259 * Rx theory of operation
3261 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3262 * each of which point to Receive Buffers to be filled by 4965. These get
3263 * used not only for Rx frames, but for any command response or notification
3264 * from the 4965. The driver and 4965 manage the Rx buffers by means
3265 * of indexes into the circular buffer.
3268 * The host/firmware share two index registers for managing the Rx buffers.
3270 * The READ index maps to the first position that the firmware may be writing
3271 * to -- the driver can read up to (but not including) this position and get
3273 * The READ index is managed by the firmware once the card is enabled.
3275 * The WRITE index maps to the last position the driver has read from -- the
3276 * position preceding WRITE is the last slot the firmware can place a packet.
3278 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3281 * During initialization, the host sets up the READ queue position to the first
3282 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3284 * When the firmware places a packet in a buffer, it will advance the READ index
3285 * and fire the RX interrupt. The driver can then query the READ index and
3286 * process as many packets as possible, moving the WRITE index forward as it
3287 * resets the Rx queue buffers with new memory.
3289 * The management in the driver is as follows:
3290 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3291 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3292 * to replenish the iwl->rxq->rx_free.
3293 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3294 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3295 * 'processed' and 'read' driver indexes as well)
3296 * + A received packet is processed and handed to the kernel network stack,
3297 * detached from the iwl->rxq. The driver 'processed' index is updated.
3298 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3299 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3300 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3301 * were enough free buffers and RX_STALLED is set it is cleared.
3306 * iwl4965_rx_queue_alloc() Allocates rx_free
3307 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3308 * iwl4965_rx_queue_restock
3309 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3310 * queue, updates firmware pointers, and updates
3311 * the WRITE index. If insufficient rx_free buffers
3312 * are available, schedules iwl4965_rx_replenish
3314 * -- enable interrupts --
3315 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3316 * READ INDEX, detaching the SKB from the pool.
3317 * Moves the packet buffer from queue to rx_used.
3318 * Calls iwl4965_rx_queue_restock to refill any empty
3325 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3327 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3329 int s = q->read - q->write;
3332 /* keep some buffer to not confuse full and empty queue */
3340 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3342 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3346 unsigned long flags;
3348 spin_lock_irqsave(&q->lock, flags);
3350 if (q->need_update == 0)
3353 /* If power-saving is in use, make sure device is awake */
3354 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3355 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3357 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3358 iwl_set_bit(priv, CSR_GP_CNTRL,
3359 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3363 rc = iwl_grab_nic_access(priv);
3367 /* Device expects a multiple of 8 */
3368 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3370 iwl_release_nic_access(priv);
3372 /* Else device is assumed to be awake */
3374 /* Device expects a multiple of 8 */
3375 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3381 spin_unlock_irqrestore(&q->lock, flags);
3386 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3388 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3389 dma_addr_t dma_addr)
3391 return cpu_to_le32((u32)(dma_addr >> 8));
3396 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3398 * If there are slots in the RX queue that need to be restocked,
3399 * and we have free pre-allocated buffers, fill the ranks as much
3400 * as we can, pulling from rx_free.
3402 * This moves the 'write' index forward to catch up with 'processed', and
3403 * also updates the memory address in the firmware to reference the new
3406 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3408 struct iwl4965_rx_queue *rxq = &priv->rxq;
3409 struct list_head *element;
3410 struct iwl4965_rx_mem_buffer *rxb;
3411 unsigned long flags;
3414 spin_lock_irqsave(&rxq->lock, flags);
3415 write = rxq->write & ~0x7;
3416 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3417 /* Get next free Rx buffer, remove from free list */
3418 element = rxq->rx_free.next;
3419 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3422 /* Point to Rx buffer via next RBD in circular buffer */
3423 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3424 rxq->queue[rxq->write] = rxb;
3425 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3428 spin_unlock_irqrestore(&rxq->lock, flags);
3429 /* If the pre-allocated buffer pool is dropping low, schedule to
3431 if (rxq->free_count <= RX_LOW_WATERMARK)
3432 queue_work(priv->workqueue, &priv->rx_replenish);
3435 /* If we've added more space for the firmware to place data, tell it.
3436 * Increment device's write pointer in multiples of 8. */
3437 if ((write != (rxq->write & ~0x7))
3438 || (abs(rxq->write - rxq->read) > 7)) {
3439 spin_lock_irqsave(&rxq->lock, flags);
3440 rxq->need_update = 1;
3441 spin_unlock_irqrestore(&rxq->lock, flags);
3442 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3451 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3453 * When moving to rx_free an SKB is allocated for the slot.
3455 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3456 * This is called as a scheduled work item (except for during initialization)
3458 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3460 struct iwl4965_rx_queue *rxq = &priv->rxq;
3461 struct list_head *element;
3462 struct iwl4965_rx_mem_buffer *rxb;
3463 unsigned long flags;
3464 spin_lock_irqsave(&rxq->lock, flags);
3465 while (!list_empty(&rxq->rx_used)) {
3466 element = rxq->rx_used.next;
3467 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3469 /* Alloc a new receive buffer */
3471 alloc_skb(priv->hw_params.rx_buf_size,
3472 __GFP_NOWARN | GFP_ATOMIC);
3474 if (net_ratelimit())
3475 printk(KERN_CRIT DRV_NAME
3476 ": Can not allocate SKB buffers\n");
3477 /* We don't reschedule replenish work here -- we will
3478 * call the restock method and if it still needs
3479 * more buffers it will schedule replenish */
3482 priv->alloc_rxb_skb++;
3485 /* Get physical address of RB/SKB */
3487 pci_map_single(priv->pci_dev, rxb->skb->data,
3488 priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE);
3489 list_add_tail(&rxb->list, &rxq->rx_free);
3492 spin_unlock_irqrestore(&rxq->lock, flags);
3496 * this should be called while priv->lock is locked
3498 static void __iwl4965_rx_replenish(void *data)
3500 struct iwl_priv *priv = data;
3502 iwl4965_rx_allocate(priv);
3503 iwl4965_rx_queue_restock(priv);
3507 void iwl4965_rx_replenish(void *data)
3509 struct iwl_priv *priv = data;
3510 unsigned long flags;
3512 iwl4965_rx_allocate(priv);
3514 spin_lock_irqsave(&priv->lock, flags);
3515 iwl4965_rx_queue_restock(priv);
3516 spin_unlock_irqrestore(&priv->lock, flags);
3519 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3520 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3521 * This free routine walks the list of POOL entries and if SKB is set to
3522 * non NULL it is unmapped and freed
3524 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3527 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3528 if (rxq->pool[i].skb != NULL) {
3529 pci_unmap_single(priv->pci_dev,
3530 rxq->pool[i].dma_addr,
3531 priv->hw_params.rx_buf_size,
3532 PCI_DMA_FROMDEVICE);
3533 dev_kfree_skb(rxq->pool[i].skb);
3537 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3542 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3544 struct iwl4965_rx_queue *rxq = &priv->rxq;
3545 struct pci_dev *dev = priv->pci_dev;
3548 spin_lock_init(&rxq->lock);
3549 INIT_LIST_HEAD(&rxq->rx_free);
3550 INIT_LIST_HEAD(&rxq->rx_used);
3552 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3553 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3557 /* Fill the rx_used queue with _all_ of the Rx buffers */
3558 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3559 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3561 /* Set us so that we have processed and used all buffers, but have
3562 * not restocked the Rx queue with fresh buffers */
3563 rxq->read = rxq->write = 0;
3564 rxq->free_count = 0;
3565 rxq->need_update = 0;
3569 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3571 unsigned long flags;
3573 spin_lock_irqsave(&rxq->lock, flags);
3574 INIT_LIST_HEAD(&rxq->rx_free);
3575 INIT_LIST_HEAD(&rxq->rx_used);
3576 /* Fill the rx_used queue with _all_ of the Rx buffers */
3577 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3578 /* In the reset function, these buffers may have been allocated
3579 * to an SKB, so we need to unmap and free potential storage */
3580 if (rxq->pool[i].skb != NULL) {
3581 pci_unmap_single(priv->pci_dev,
3582 rxq->pool[i].dma_addr,
3583 priv->hw_params.rx_buf_size,
3584 PCI_DMA_FROMDEVICE);
3585 priv->alloc_rxb_skb--;
3586 dev_kfree_skb(rxq->pool[i].skb);
3587 rxq->pool[i].skb = NULL;
3589 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3592 /* Set us so that we have processed and used all buffers, but have
3593 * not restocked the Rx queue with fresh buffers */
3594 rxq->read = rxq->write = 0;
3595 rxq->free_count = 0;
3596 spin_unlock_irqrestore(&rxq->lock, flags);
3599 /* Convert linear signal-to-noise ratio into dB */
3600 static u8 ratio2dB[100] = {
3601 /* 0 1 2 3 4 5 6 7 8 9 */
3602 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3603 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3604 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3605 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3606 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3607 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3608 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3609 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3610 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3611 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3614 /* Calculates a relative dB value from a ratio of linear
3615 * (i.e. not dB) signal levels.
3616 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3617 int iwl4965_calc_db_from_ratio(int sig_ratio)
3619 /* 1000:1 or higher just report as 60 dB */
3620 if (sig_ratio >= 1000)
3623 /* 100:1 or higher, divide by 10 and use table,
3624 * add 20 dB to make up for divide by 10 */
3625 if (sig_ratio >= 100)
3626 return (20 + (int)ratio2dB[sig_ratio/10]);
3628 /* We shouldn't see this */
3632 /* Use table for ratios 1:1 - 99:1 */
3633 return (int)ratio2dB[sig_ratio];
3636 #define PERFECT_RSSI (-20) /* dBm */
3637 #define WORST_RSSI (-95) /* dBm */
3638 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3640 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3641 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3642 * about formulas used below. */
3643 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3646 int degradation = PERFECT_RSSI - rssi_dbm;
3648 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3649 * as indicator; formula is (signal dbm - noise dbm).
3650 * SNR at or above 40 is a great signal (100%).
3651 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3652 * Weakest usable signal is usually 10 - 15 dB SNR. */
3654 if (rssi_dbm - noise_dbm >= 40)
3656 else if (rssi_dbm < noise_dbm)
3658 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3660 /* Else use just the signal level.
3661 * This formula is a least squares fit of data points collected and
3662 * compared with a reference system that had a percentage (%) display
3663 * for signal quality. */
3665 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3666 (15 * RSSI_RANGE + 62 * degradation)) /
3667 (RSSI_RANGE * RSSI_RANGE);
3671 else if (sig_qual < 1)
3678 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3680 * Uses the priv->rx_handlers callback function array to invoke
3681 * the appropriate handlers, including command responses,
3682 * frame-received notifications, and other notifications.
3684 static void iwl4965_rx_handle(struct iwl_priv *priv)
3686 struct iwl4965_rx_mem_buffer *rxb;
3687 struct iwl4965_rx_packet *pkt;
3688 struct iwl4965_rx_queue *rxq = &priv->rxq;
3691 unsigned long flags;
3695 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3696 * buffer that the driver may process (last buffer filled by ucode). */
3697 r = iwl4965_hw_get_rx_read(priv);
3700 /* Rx interrupt, but nothing sent from uCode */
3702 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3704 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3708 rxb = rxq->queue[i];
3710 /* If an RXB doesn't have a Rx queue slot associated with it,
3711 * then a bug has been introduced in the queue refilling
3712 * routines -- catch it here */
3713 BUG_ON(rxb == NULL);
3715 rxq->queue[i] = NULL;
3717 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3718 priv->hw_params.rx_buf_size,
3719 PCI_DMA_FROMDEVICE);
3720 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3722 /* Reclaim a command buffer only if this packet is a response
3723 * to a (driver-originated) command.
3724 * If the packet (e.g. Rx frame) originated from uCode,
3725 * there is no command buffer to reclaim.
3726 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3727 * but apparently a few don't get set; catch them here. */
3728 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3729 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3730 (pkt->hdr.cmd != REPLY_RX) &&
3731 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3732 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3733 (pkt->hdr.cmd != REPLY_TX);
3735 /* Based on type of command response or notification,
3736 * handle those that need handling via function in
3737 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3738 if (priv->rx_handlers[pkt->hdr.cmd]) {
3739 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3740 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3741 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3742 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3744 /* No handling needed */
3745 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3746 "r %d i %d No handler needed for %s, 0x%02x\n",
3747 r, i, get_cmd_string(pkt->hdr.cmd),
3752 /* Invoke any callbacks, transfer the skb to caller, and
3753 * fire off the (possibly) blocking iwl_send_cmd()
3754 * as we reclaim the driver command queue */
3755 if (rxb && rxb->skb)
3756 iwl4965_tx_cmd_complete(priv, rxb);
3758 IWL_WARNING("Claim null rxb?\n");
3761 /* For now we just don't re-use anything. We can tweak this
3762 * later to try and re-use notification packets and SKBs that
3763 * fail to Rx correctly */
3764 if (rxb->skb != NULL) {
3765 priv->alloc_rxb_skb--;
3766 dev_kfree_skb_any(rxb->skb);
3770 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3771 priv->hw_params.rx_buf_size,
3772 PCI_DMA_FROMDEVICE);
3773 spin_lock_irqsave(&rxq->lock, flags);
3774 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3775 spin_unlock_irqrestore(&rxq->lock, flags);
3776 i = (i + 1) & RX_QUEUE_MASK;
3777 /* If there are a lot of unused frames,
3778 * restock the Rx queue so ucode wont assert. */
3783 __iwl4965_rx_replenish(priv);
3789 /* Backtrack one entry */
3791 iwl4965_rx_queue_restock(priv);
3795 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3797 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
3798 struct iwl4965_tx_queue *txq)
3802 int txq_id = txq->q.id;
3804 if (txq->need_update == 0)
3807 /* if we're trying to save power */
3808 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3809 /* wake up nic if it's powered down ...
3810 * uCode will wake up, and interrupt us again, so next
3811 * time we'll skip this part. */
3812 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3814 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3815 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3816 iwl_set_bit(priv, CSR_GP_CNTRL,
3817 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3821 /* restore this queue's parameters in nic hardware. */
3822 rc = iwl_grab_nic_access(priv);
3825 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3826 txq->q.write_ptr | (txq_id << 8));
3827 iwl_release_nic_access(priv);
3829 /* else not in power-save mode, uCode will never sleep when we're
3830 * trying to tx (during RFKILL, we're not trying to tx). */
3832 iwl_write32(priv, HBUS_TARG_WRPTR,
3833 txq->q.write_ptr | (txq_id << 8));
3835 txq->need_update = 0;
3840 #ifdef CONFIG_IWLWIFI_DEBUG
3841 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
3843 DECLARE_MAC_BUF(mac);
3845 IWL_DEBUG_RADIO("RX CONFIG:\n");
3846 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3847 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3848 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3849 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3850 le32_to_cpu(rxon->filter_flags));
3851 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3852 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3853 rxon->ofdm_basic_rates);
3854 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3855 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3856 print_mac(mac, rxon->node_addr));
3857 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3858 print_mac(mac, rxon->bssid_addr));
3859 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3863 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
3865 IWL_DEBUG_ISR("Enabling interrupts\n");
3866 set_bit(STATUS_INT_ENABLED, &priv->status);
3867 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3870 /* call this function to flush any scheduled tasklet */
3871 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3873 /* wait to make sure we flush pedding tasklet*/
3874 synchronize_irq(priv->pci_dev->irq);
3875 tasklet_kill(&priv->irq_tasklet);
3878 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
3880 clear_bit(STATUS_INT_ENABLED, &priv->status);
3882 /* disable interrupts from uCode/NIC to host */
3883 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3885 /* acknowledge/clear/reset any interrupts still pending
3886 * from uCode or flow handler (Rx/Tx DMA) */
3887 iwl_write32(priv, CSR_INT, 0xffffffff);
3888 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3889 IWL_DEBUG_ISR("Disabled interrupts\n");
3892 static const char *desc_lookup(int i)
3900 return "BAD_CHECKSUM";
3902 return "NMI_INTERRUPT";
3906 return "FATAL_ERROR";
3912 #define ERROR_START_OFFSET (1 * sizeof(u32))
3913 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3915 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
3918 u32 desc, time, count, base, data1;
3919 u32 blink1, blink2, ilink1, ilink2;
3922 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3924 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
3925 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3929 rc = iwl_grab_nic_access(priv);
3931 IWL_WARNING("Can not read from adapter at this time.\n");
3935 count = iwl_read_targ_mem(priv, base);
3937 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3938 IWL_ERROR("Start IWL Error Log Dump:\n");
3939 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3942 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
3943 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
3944 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
3945 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
3946 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
3947 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
3948 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
3949 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
3950 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
3952 IWL_ERROR("Desc Time "
3953 "data1 data2 line\n");
3954 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3955 desc_lookup(desc), desc, time, data1, data2, line);
3956 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3957 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
3960 iwl_release_nic_access(priv);
3963 #define EVENT_START_OFFSET (4 * sizeof(u32))
3966 * iwl4965_print_event_log - Dump error event log to syslog
3968 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3970 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
3971 u32 num_events, u32 mode)
3974 u32 base; /* SRAM byte address of event log header */
3975 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3976 u32 ptr; /* SRAM byte address of log data */
3977 u32 ev, time, data; /* event log data */
3979 if (num_events == 0)
3982 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3985 event_size = 2 * sizeof(u32);
3987 event_size = 3 * sizeof(u32);
3989 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3991 /* "time" is actually "data" for mode 0 (no timestamp).
3992 * place event id # at far right for easier visual parsing. */
3993 for (i = 0; i < num_events; i++) {
3994 ev = iwl_read_targ_mem(priv, ptr);
3996 time = iwl_read_targ_mem(priv, ptr);
3999 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4001 data = iwl_read_targ_mem(priv, ptr);
4003 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4008 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4011 u32 base; /* SRAM byte address of event log header */
4012 u32 capacity; /* event log capacity in # entries */
4013 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4014 u32 num_wraps; /* # times uCode wrapped to top of log */
4015 u32 next_entry; /* index of next entry to be written by uCode */
4016 u32 size; /* # entries that we'll print */
4018 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4019 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4020 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4024 rc = iwl_grab_nic_access(priv);
4026 IWL_WARNING("Can not read from adapter at this time.\n");
4030 /* event log header */
4031 capacity = iwl_read_targ_mem(priv, base);
4032 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4033 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4034 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4036 size = num_wraps ? capacity : next_entry;
4038 /* bail out if nothing in log */
4040 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4041 iwl_release_nic_access(priv);
4045 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4048 /* if uCode has wrapped back to top of log, start at the oldest entry,
4049 * i.e the next one that uCode would fill. */
4051 iwl4965_print_event_log(priv, next_entry,
4052 capacity - next_entry, mode);
4054 /* (then/else) start at top of log */
4055 iwl4965_print_event_log(priv, 0, next_entry, mode);
4057 iwl_release_nic_access(priv);
4061 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4063 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4065 /* Set the FW error flag -- cleared on iwl4965_down */
4066 set_bit(STATUS_FW_ERROR, &priv->status);
4068 /* Cancel currently queued command. */
4069 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4071 #ifdef CONFIG_IWLWIFI_DEBUG
4072 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4073 iwl4965_dump_nic_error_log(priv);
4074 iwl4965_dump_nic_event_log(priv);
4075 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4079 wake_up_interruptible(&priv->wait_command_queue);
4081 /* Keep the restart process from trying to send host
4082 * commands by clearing the INIT status bit */
4083 clear_bit(STATUS_READY, &priv->status);
4085 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4086 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4087 "Restarting adapter due to uCode error.\n");
4089 if (iwl_is_associated(priv)) {
4090 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4091 sizeof(priv->recovery_rxon));
4092 priv->error_recovering = 1;
4094 queue_work(priv->workqueue, &priv->restart);
4098 static void iwl4965_error_recovery(struct iwl_priv *priv)
4100 unsigned long flags;
4102 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4103 sizeof(priv->staging_rxon));
4104 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4105 iwl4965_commit_rxon(priv);
4107 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4109 spin_lock_irqsave(&priv->lock, flags);
4110 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4111 priv->error_recovering = 0;
4112 spin_unlock_irqrestore(&priv->lock, flags);
4115 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4117 u32 inta, handled = 0;
4119 unsigned long flags;
4120 #ifdef CONFIG_IWLWIFI_DEBUG
4124 spin_lock_irqsave(&priv->lock, flags);
4126 /* Ack/clear/reset pending uCode interrupts.
4127 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4128 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4129 inta = iwl_read32(priv, CSR_INT);
4130 iwl_write32(priv, CSR_INT, inta);
4132 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4133 * Any new interrupts that happen after this, either while we're
4134 * in this tasklet, or later, will show up in next ISR/tasklet. */
4135 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4136 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4138 #ifdef CONFIG_IWLWIFI_DEBUG
4139 if (iwl_debug_level & IWL_DL_ISR) {
4140 /* just for debug */
4141 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4142 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4143 inta, inta_mask, inta_fh);
4147 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4148 * atomic, make sure that inta covers all the interrupts that
4149 * we've discovered, even if FH interrupt came in just after
4150 * reading CSR_INT. */
4151 if (inta_fh & CSR49_FH_INT_RX_MASK)
4152 inta |= CSR_INT_BIT_FH_RX;
4153 if (inta_fh & CSR49_FH_INT_TX_MASK)
4154 inta |= CSR_INT_BIT_FH_TX;
4156 /* Now service all interrupt bits discovered above. */
4157 if (inta & CSR_INT_BIT_HW_ERR) {
4158 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4160 /* Tell the device to stop sending interrupts */
4161 iwl4965_disable_interrupts(priv);
4163 iwl4965_irq_handle_error(priv);
4165 handled |= CSR_INT_BIT_HW_ERR;
4167 spin_unlock_irqrestore(&priv->lock, flags);
4172 #ifdef CONFIG_IWLWIFI_DEBUG
4173 if (iwl_debug_level & (IWL_DL_ISR)) {
4174 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4175 if (inta & CSR_INT_BIT_SCD)
4176 IWL_DEBUG_ISR("Scheduler finished to transmit "
4177 "the frame/frames.\n");
4179 /* Alive notification via Rx interrupt will do the real work */
4180 if (inta & CSR_INT_BIT_ALIVE)
4181 IWL_DEBUG_ISR("Alive interrupt\n");
4184 /* Safely ignore these bits for debug checks below */
4185 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4187 /* HW RF KILL switch toggled */
4188 if (inta & CSR_INT_BIT_RF_KILL) {
4190 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4191 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4194 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4195 "RF_KILL bit toggled to %s.\n",
4196 hw_rf_kill ? "disable radio":"enable radio");
4198 /* Queue restart only if RF_KILL switch was set to "kill"
4199 * when we loaded driver, and is now set to "enable".
4200 * After we're Alive, RF_KILL gets handled by
4201 * iwl4965_rx_card_state_notif() */
4202 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4203 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4204 queue_work(priv->workqueue, &priv->restart);
4207 handled |= CSR_INT_BIT_RF_KILL;
4210 /* Chip got too hot and stopped itself */
4211 if (inta & CSR_INT_BIT_CT_KILL) {
4212 IWL_ERROR("Microcode CT kill error detected.\n");
4213 handled |= CSR_INT_BIT_CT_KILL;
4216 /* Error detected by uCode */
4217 if (inta & CSR_INT_BIT_SW_ERR) {
4218 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4220 iwl4965_irq_handle_error(priv);
4221 handled |= CSR_INT_BIT_SW_ERR;
4224 /* uCode wakes up after power-down sleep */
4225 if (inta & CSR_INT_BIT_WAKEUP) {
4226 IWL_DEBUG_ISR("Wakeup interrupt\n");
4227 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4228 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4229 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4230 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4231 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4232 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4233 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4235 handled |= CSR_INT_BIT_WAKEUP;
4238 /* All uCode command responses, including Tx command responses,
4239 * Rx "responses" (frame-received notification), and other
4240 * notifications from uCode come through here*/
4241 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4242 iwl4965_rx_handle(priv);
4243 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4246 if (inta & CSR_INT_BIT_FH_TX) {
4247 IWL_DEBUG_ISR("Tx interrupt\n");
4248 handled |= CSR_INT_BIT_FH_TX;
4251 if (inta & ~handled)
4252 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4254 if (inta & ~CSR_INI_SET_MASK) {
4255 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4256 inta & ~CSR_INI_SET_MASK);
4257 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4260 /* Re-enable all interrupts */
4261 /* only Re-enable if diabled by irq */
4262 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4263 iwl4965_enable_interrupts(priv);
4265 #ifdef CONFIG_IWLWIFI_DEBUG
4266 if (iwl_debug_level & (IWL_DL_ISR)) {
4267 inta = iwl_read32(priv, CSR_INT);
4268 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4269 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4270 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4271 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4274 spin_unlock_irqrestore(&priv->lock, flags);
4277 static irqreturn_t iwl4965_isr(int irq, void *data)
4279 struct iwl_priv *priv = data;
4280 u32 inta, inta_mask;
4285 spin_lock(&priv->lock);
4287 /* Disable (but don't clear!) interrupts here to avoid
4288 * back-to-back ISRs and sporadic interrupts from our NIC.
4289 * If we have something to service, the tasklet will re-enable ints.
4290 * If we *don't* have something, we'll re-enable before leaving here. */
4291 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4292 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4294 /* Discover which interrupts are active/pending */
4295 inta = iwl_read32(priv, CSR_INT);
4296 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4298 /* Ignore interrupt if there's nothing in NIC to service.
4299 * This may be due to IRQ shared with another device,
4300 * or due to sporadic interrupts thrown from our NIC. */
4301 if (!inta && !inta_fh) {
4302 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4306 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4307 /* Hardware disappeared. It might have already raised
4309 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4313 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4314 inta, inta_mask, inta_fh);
4316 inta &= ~CSR_INT_BIT_SCD;
4318 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4319 if (likely(inta || inta_fh))
4320 tasklet_schedule(&priv->irq_tasklet);
4323 spin_unlock(&priv->lock);
4327 /* re-enable interrupts here since we don't have anything to service. */
4328 /* only Re-enable if diabled by irq */
4329 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4330 iwl4965_enable_interrupts(priv);
4331 spin_unlock(&priv->lock);
4335 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4336 * sending probe req. This should be set long enough to hear probe responses
4337 * from more than one AP. */
4338 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4339 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4341 /* For faster active scanning, scan will move to the next channel if fewer than
4342 * PLCP_QUIET_THRESH packets are heard on this channel within
4343 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4344 * time if it's a quiet channel (nothing responded to our probe, and there's
4345 * no other traffic).
4346 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4347 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4348 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4350 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4351 * Must be set longer than active dwell time.
4352 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4353 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4354 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4355 #define IWL_PASSIVE_DWELL_BASE (100)
4356 #define IWL_CHANNEL_TUNE_TIME 5
4358 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4359 enum ieee80211_band band)
4361 if (band == IEEE80211_BAND_5GHZ)
4362 return IWL_ACTIVE_DWELL_TIME_52;
4364 return IWL_ACTIVE_DWELL_TIME_24;
4367 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4368 enum ieee80211_band band)
4370 u16 active = iwl4965_get_active_dwell_time(priv, band);
4371 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4372 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4373 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4375 if (iwl_is_associated(priv)) {
4376 /* If we're associated, we clamp the maximum passive
4377 * dwell time to be 98% of the beacon interval (minus
4378 * 2 * channel tune time) */
4379 passive = priv->beacon_int;
4380 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4381 passive = IWL_PASSIVE_DWELL_BASE;
4382 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4385 if (passive <= active)
4386 passive = active + 1;
4391 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4392 enum ieee80211_band band,
4393 u8 is_active, u8 direct_mask,
4394 struct iwl4965_scan_channel *scan_ch)
4396 const struct ieee80211_channel *channels = NULL;
4397 const struct ieee80211_supported_band *sband;
4398 const struct iwl_channel_info *ch_info;
4399 u16 passive_dwell = 0;
4400 u16 active_dwell = 0;
4403 sband = iwl4965_get_hw_mode(priv, band);
4407 channels = sband->channels;
4409 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4410 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4412 for (i = 0, added = 0; i < sband->n_channels; i++) {
4413 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4416 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4418 ch_info = iwl_get_channel_info(priv, band,
4420 if (!is_channel_valid(ch_info)) {
4421 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4426 if (!is_active || is_channel_passive(ch_info) ||
4427 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4428 scan_ch->type = 0; /* passive */
4430 scan_ch->type = 1; /* active */
4432 if (scan_ch->type & 1)
4433 scan_ch->type |= (direct_mask << 1);
4435 if (is_channel_narrow(ch_info))
4436 scan_ch->type |= (1 << 7);
4438 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4439 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4441 /* Set txpower levels to defaults */
4442 scan_ch->tpc.dsp_atten = 110;
4443 /* scan_pwr_info->tpc.dsp_atten; */
4445 /*scan_pwr_info->tpc.tx_gain; */
4446 if (band == IEEE80211_BAND_5GHZ)
4447 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4449 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4450 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4452 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4456 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4458 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4459 (scan_ch->type & 1) ?
4460 active_dwell : passive_dwell);
4466 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4470 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4471 struct ieee80211_rate *rates)
4475 for (i = 0; i < IWL_RATE_COUNT; i++) {
4476 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4477 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4478 rates[i].hw_value_short = i;
4480 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4482 * If CCK != 1M then set short preamble rate flag.
4485 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4486 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4492 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4494 int iwl4965_init_geos(struct iwl_priv *priv)
4496 struct iwl_channel_info *ch;
4497 struct ieee80211_supported_band *sband;
4498 struct ieee80211_channel *channels;
4499 struct ieee80211_channel *geo_ch;
4500 struct ieee80211_rate *rates;
4503 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4504 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4505 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4506 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4510 channels = kzalloc(sizeof(struct ieee80211_channel) *
4511 priv->channel_count, GFP_KERNEL);
4515 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4522 /* 5.2GHz channels start after the 2.4GHz channels */
4523 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4524 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4526 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4527 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4529 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4531 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4532 sband->channels = channels;
4534 sband->bitrates = rates;
4535 sband->n_bitrates = IWL_RATE_COUNT;
4537 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4539 priv->ieee_channels = channels;
4540 priv->ieee_rates = rates;
4542 iwl4965_init_hw_rates(priv, rates);
4544 for (i = 0; i < priv->channel_count; i++) {
4545 ch = &priv->channel_info[i];
4547 /* FIXME: might be removed if scan is OK */
4548 if (!is_channel_valid(ch))
4551 if (is_channel_a_band(ch))
4552 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4554 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4556 geo_ch = &sband->channels[sband->n_channels++];
4558 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4559 geo_ch->max_power = ch->max_power_avg;
4560 geo_ch->max_antenna_gain = 0xff;
4561 geo_ch->hw_value = ch->channel;
4563 if (is_channel_valid(ch)) {
4564 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4565 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4567 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4568 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4570 if (ch->flags & EEPROM_CHANNEL_RADAR)
4571 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4573 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4574 priv->max_channel_txpower_limit =
4577 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4580 /* Save flags for reg domain usage */
4581 geo_ch->orig_flags = geo_ch->flags;
4583 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4584 ch->channel, geo_ch->center_freq,
4585 is_channel_a_band(ch) ? "5.2" : "2.4",
4586 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4587 "restricted" : "valid",
4591 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4592 priv->cfg->sku & IWL_SKU_A) {
4593 printk(KERN_INFO DRV_NAME
4594 ": Incorrectly detected BG card as ABG. Please send "
4595 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4596 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4597 priv->cfg->sku &= ~IWL_SKU_A;
4600 printk(KERN_INFO DRV_NAME
4601 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4602 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4603 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4605 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4606 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4607 &priv->bands[IEEE80211_BAND_2GHZ];
4608 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4609 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4610 &priv->bands[IEEE80211_BAND_5GHZ];
4612 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4618 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4620 void iwl4965_free_geos(struct iwl_priv *priv)
4622 kfree(priv->ieee_channels);
4623 kfree(priv->ieee_rates);
4624 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4627 /******************************************************************************
4629 * uCode download functions
4631 ******************************************************************************/
4633 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4635 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4636 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4637 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4638 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4639 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4640 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4644 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4645 * looking at all data.
4647 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
4655 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4657 rc = iwl_grab_nic_access(priv);
4661 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
4664 for (; len > 0; len -= sizeof(u32), image++) {
4665 /* read data comes through single port, auto-incr addr */
4666 /* NOTE: Use the debugless read so we don't flood kernel log
4667 * if IWL_DL_IO is set */
4668 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4669 if (val != le32_to_cpu(*image)) {
4670 IWL_ERROR("uCode INST section is invalid at "
4671 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4672 save_len - len, val, le32_to_cpu(*image));
4680 iwl_release_nic_access(priv);
4684 ("ucode image in INSTRUCTION memory is good\n");
4691 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4692 * using sample data 100 bytes apart. If these sample points are good,
4693 * it's a pretty good bet that everything between them is good, too.
4695 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4702 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4704 rc = iwl_grab_nic_access(priv);
4708 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4709 /* read data comes through single port, auto-incr addr */
4710 /* NOTE: Use the debugless read so we don't flood kernel log
4711 * if IWL_DL_IO is set */
4712 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4713 i + RTC_INST_LOWER_BOUND);
4714 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4715 if (val != le32_to_cpu(*image)) {
4716 #if 0 /* Enable this if you want to see details */
4717 IWL_ERROR("uCode INST section is invalid at "
4718 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4728 iwl_release_nic_access(priv);
4735 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
4736 * and verify its contents
4738 static int iwl4965_verify_ucode(struct iwl_priv *priv)
4745 image = (__le32 *)priv->ucode_boot.v_addr;
4746 len = priv->ucode_boot.len;
4747 rc = iwl4965_verify_inst_sparse(priv, image, len);
4749 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4753 /* Try initialize */
4754 image = (__le32 *)priv->ucode_init.v_addr;
4755 len = priv->ucode_init.len;
4756 rc = iwl4965_verify_inst_sparse(priv, image, len);
4758 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4762 /* Try runtime/protocol */
4763 image = (__le32 *)priv->ucode_code.v_addr;
4764 len = priv->ucode_code.len;
4765 rc = iwl4965_verify_inst_sparse(priv, image, len);
4767 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4771 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4773 /* Since nothing seems to match, show first several data entries in
4774 * instruction SRAM, so maybe visual inspection will give a clue.
4775 * Selection of bootstrap image (vs. other images) is arbitrary. */
4776 image = (__le32 *)priv->ucode_boot.v_addr;
4777 len = priv->ucode_boot.len;
4778 rc = iwl4965_verify_inst_full(priv, image, len);
4783 static void iwl4965_nic_start(struct iwl_priv *priv)
4785 /* Remove all resets to allow NIC to operate */
4786 iwl_write32(priv, CSR_RESET, 0);
4791 * iwl4965_read_ucode - Read uCode images from disk file.
4793 * Copy into buffers for card to fetch via bus-mastering
4795 static int iwl4965_read_ucode(struct iwl_priv *priv)
4797 struct iwl4965_ucode *ucode;
4799 const struct firmware *ucode_raw;
4800 const char *name = priv->cfg->fw_name;
4803 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
4805 /* Ask kernel firmware_class module to get the boot firmware off disk.
4806 * request_firmware() is synchronous, file is in memory on return. */
4807 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
4809 IWL_ERROR("%s firmware file req failed: Reason %d\n",
4814 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4815 name, ucode_raw->size);
4817 /* Make sure that we got at least our header! */
4818 if (ucode_raw->size < sizeof(*ucode)) {
4819 IWL_ERROR("File size way too small!\n");
4824 /* Data from ucode file: header followed by uCode images */
4825 ucode = (void *)ucode_raw->data;
4827 ver = le32_to_cpu(ucode->ver);
4828 inst_size = le32_to_cpu(ucode->inst_size);
4829 data_size = le32_to_cpu(ucode->data_size);
4830 init_size = le32_to_cpu(ucode->init_size);
4831 init_data_size = le32_to_cpu(ucode->init_data_size);
4832 boot_size = le32_to_cpu(ucode->boot_size);
4834 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
4835 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4837 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4839 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4841 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4843 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4846 /* Verify size of file vs. image size info in file's header */
4847 if (ucode_raw->size < sizeof(*ucode) +
4848 inst_size + data_size + init_size +
4849 init_data_size + boot_size) {
4851 IWL_DEBUG_INFO("uCode file size %d too small\n",
4852 (int)ucode_raw->size);
4857 /* Verify that uCode images will fit in card's SRAM */
4858 if (inst_size > IWL_MAX_INST_SIZE) {
4859 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4865 if (data_size > IWL_MAX_DATA_SIZE) {
4866 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4871 if (init_size > IWL_MAX_INST_SIZE) {
4873 ("uCode init instr len %d too large to fit in\n",
4878 if (init_data_size > IWL_MAX_DATA_SIZE) {
4880 ("uCode init data len %d too large to fit in\n",
4885 if (boot_size > IWL_MAX_BSM_SIZE) {
4887 ("uCode boot instr len %d too large to fit in\n",
4893 /* Allocate ucode buffers for card's bus-master loading ... */
4895 /* Runtime instructions and 2 copies of data:
4896 * 1) unmodified from disk
4897 * 2) backup cache for save/restore during power-downs */
4898 priv->ucode_code.len = inst_size;
4899 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4901 priv->ucode_data.len = data_size;
4902 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4904 priv->ucode_data_backup.len = data_size;
4905 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4907 /* Initialization instructions and data */
4908 if (init_size && init_data_size) {
4909 priv->ucode_init.len = init_size;
4910 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4912 priv->ucode_init_data.len = init_data_size;
4913 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4915 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4919 /* Bootstrap (instructions only, no data) */
4921 priv->ucode_boot.len = boot_size;
4922 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4924 if (!priv->ucode_boot.v_addr)
4928 /* Copy images into buffers for card's bus-master reads ... */
4930 /* Runtime instructions (first block of data in file) */
4931 src = &ucode->data[0];
4932 len = priv->ucode_code.len;
4933 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4934 memcpy(priv->ucode_code.v_addr, src, len);
4935 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4936 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4938 /* Runtime data (2nd block)
4939 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
4940 src = &ucode->data[inst_size];
4941 len = priv->ucode_data.len;
4942 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4943 memcpy(priv->ucode_data.v_addr, src, len);
4944 memcpy(priv->ucode_data_backup.v_addr, src, len);
4946 /* Initialization instructions (3rd block) */
4948 src = &ucode->data[inst_size + data_size];
4949 len = priv->ucode_init.len;
4950 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4952 memcpy(priv->ucode_init.v_addr, src, len);
4955 /* Initialization data (4th block) */
4956 if (init_data_size) {
4957 src = &ucode->data[inst_size + data_size + init_size];
4958 len = priv->ucode_init_data.len;
4959 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4961 memcpy(priv->ucode_init_data.v_addr, src, len);
4964 /* Bootstrap instructions (5th block) */
4965 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4966 len = priv->ucode_boot.len;
4967 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
4968 memcpy(priv->ucode_boot.v_addr, src, len);
4970 /* We have our copies now, allow OS release its copies */
4971 release_firmware(ucode_raw);
4975 IWL_ERROR("failed to allocate pci memory\n");
4977 iwl4965_dealloc_ucode_pci(priv);
4980 release_firmware(ucode_raw);
4988 * iwl4965_set_ucode_ptrs - Set uCode address location
4990 * Tell initialization uCode where to find runtime uCode.
4992 * BSM registers initially contain pointers to initialization uCode.
4993 * We need to replace them to load runtime uCode inst and data,
4994 * and to save runtime data when powering down.
4996 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5001 unsigned long flags;
5003 /* bits 35:4 for 4965 */
5004 pinst = priv->ucode_code.p_addr >> 4;
5005 pdata = priv->ucode_data_backup.p_addr >> 4;
5007 spin_lock_irqsave(&priv->lock, flags);
5008 rc = iwl_grab_nic_access(priv);
5010 spin_unlock_irqrestore(&priv->lock, flags);
5014 /* Tell bootstrap uCode where to find image to load */
5015 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5016 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5017 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5018 priv->ucode_data.len);
5020 /* Inst bytecount must be last to set up, bit 31 signals uCode
5021 * that all new ptr/size info is in place */
5022 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5023 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5025 iwl_release_nic_access(priv);
5027 spin_unlock_irqrestore(&priv->lock, flags);
5029 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5035 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5037 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5039 * The 4965 "initialize" ALIVE reply contains calibration data for:
5040 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5041 * (3945 does not contain this data).
5043 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5045 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5047 /* Check alive response for "valid" sign from uCode */
5048 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5049 /* We had an error bringing up the hardware, so take it
5050 * all the way back down so we can try again */
5051 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5055 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5056 * This is a paranoid check, because we would not have gotten the
5057 * "initialize" alive if code weren't properly loaded. */
5058 if (iwl4965_verify_ucode(priv)) {
5059 /* Runtime instruction load was bad;
5060 * take it all the way back down so we can try again */
5061 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5065 /* Calculate temperature */
5066 priv->temperature = iwl4965_get_temperature(priv);
5068 /* Send pointers to protocol/runtime uCode image ... init code will
5069 * load and launch runtime uCode, which will send us another "Alive"
5071 IWL_DEBUG_INFO("Initialization Alive received.\n");
5072 if (iwl4965_set_ucode_ptrs(priv)) {
5073 /* Runtime instruction load won't happen;
5074 * take it all the way back down so we can try again */
5075 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5081 queue_work(priv->workqueue, &priv->restart);
5086 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5087 * from protocol/runtime uCode (initialization uCode's
5088 * Alive gets handled by iwl4965_init_alive_start()).
5090 static void iwl4965_alive_start(struct iwl_priv *priv)
5094 IWL_DEBUG_INFO("Runtime Alive received.\n");
5096 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5097 /* We had an error bringing up the hardware, so take it
5098 * all the way back down so we can try again */
5099 IWL_DEBUG_INFO("Alive failed.\n");
5103 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5104 * This is a paranoid check, because we would not have gotten the
5105 * "runtime" alive if code weren't properly loaded. */
5106 if (iwl4965_verify_ucode(priv)) {
5107 /* Runtime instruction load was bad;
5108 * take it all the way back down so we can try again */
5109 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5113 iwlcore_clear_stations_table(priv);
5115 ret = priv->cfg->ops->lib->alive_notify(priv);
5117 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5122 /* After the ALIVE response, we can send host commands to 4965 uCode */
5123 set_bit(STATUS_ALIVE, &priv->status);
5125 /* Clear out the uCode error bit if it is set */
5126 clear_bit(STATUS_FW_ERROR, &priv->status);
5128 if (iwl_is_rfkill(priv))
5131 ieee80211_start_queues(priv->hw);
5133 priv->active_rate = priv->rates_mask;
5134 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5136 if (iwl_is_associated(priv)) {
5137 struct iwl4965_rxon_cmd *active_rxon =
5138 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5140 memcpy(&priv->staging_rxon, &priv->active_rxon,
5141 sizeof(priv->staging_rxon));
5142 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5144 /* Initialize our rx_config data */
5145 iwl4965_connection_init_rx_config(priv);
5146 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5149 /* Configure Bluetooth device coexistence support */
5150 iwl4965_send_bt_config(priv);
5152 /* Configure the adapter for unassociated operation */
5153 iwl4965_commit_rxon(priv);
5155 /* At this point, the NIC is initialized and operational */
5156 priv->notif_missed_beacons = 0;
5158 iwl4965_rf_kill_ct_config(priv);
5160 iwl_leds_register(priv);
5162 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5163 set_bit(STATUS_READY, &priv->status);
5164 wake_up_interruptible(&priv->wait_command_queue);
5166 if (priv->error_recovering)
5167 iwl4965_error_recovery(priv);
5169 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5170 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5174 queue_work(priv->workqueue, &priv->restart);
5177 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5179 static void __iwl4965_down(struct iwl_priv *priv)
5181 unsigned long flags;
5182 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5183 struct ieee80211_conf *conf = NULL;
5185 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5187 conf = ieee80211_get_hw_conf(priv->hw);
5190 set_bit(STATUS_EXIT_PENDING, &priv->status);
5192 iwl_leds_unregister(priv);
5194 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5196 iwlcore_clear_stations_table(priv);
5198 /* Unblock any waiting calls */
5199 wake_up_interruptible_all(&priv->wait_command_queue);
5201 /* Wipe out the EXIT_PENDING status bit if we are not actually
5202 * exiting the module */
5204 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5206 /* stop and reset the on-board processor */
5207 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5209 /* tell the device to stop sending interrupts */
5210 spin_lock_irqsave(&priv->lock, flags);
5211 iwl4965_disable_interrupts(priv);
5212 spin_unlock_irqrestore(&priv->lock, flags);
5213 iwl_synchronize_irq(priv);
5215 if (priv->mac80211_registered)
5216 ieee80211_stop_queues(priv->hw);
5218 /* If we have not previously called iwl4965_init() then
5219 * clear all bits but the RF Kill and SUSPEND bits and return */
5220 if (!iwl_is_init(priv)) {
5221 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5223 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5225 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5226 STATUS_GEO_CONFIGURED |
5227 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5232 /* ...otherwise clear out all the status bits but the RF Kill and
5233 * SUSPEND bits and continue taking the NIC down. */
5234 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5236 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5238 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5239 STATUS_GEO_CONFIGURED |
5240 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5242 test_bit(STATUS_FW_ERROR, &priv->status) <<
5245 spin_lock_irqsave(&priv->lock, flags);
5246 iwl_clear_bit(priv, CSR_GP_CNTRL,
5247 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5248 spin_unlock_irqrestore(&priv->lock, flags);
5250 iwl4965_hw_txq_ctx_stop(priv);
5251 iwl4965_hw_rxq_stop(priv);
5253 spin_lock_irqsave(&priv->lock, flags);
5254 if (!iwl_grab_nic_access(priv)) {
5255 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5256 APMG_CLK_VAL_DMA_CLK_RQT);
5257 iwl_release_nic_access(priv);
5259 spin_unlock_irqrestore(&priv->lock, flags);
5263 iwl4965_hw_nic_stop_master(priv);
5264 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5265 iwl4965_hw_nic_reset(priv);
5268 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5270 if (priv->ibss_beacon)
5271 dev_kfree_skb(priv->ibss_beacon);
5272 priv->ibss_beacon = NULL;
5274 /* clear out any free frames */
5275 iwl4965_clear_free_frames(priv);
5278 static void iwl4965_down(struct iwl_priv *priv)
5280 mutex_lock(&priv->mutex);
5281 __iwl4965_down(priv);
5282 mutex_unlock(&priv->mutex);
5284 iwl4965_cancel_deferred_work(priv);
5287 #define MAX_HW_RESTARTS 5
5289 static int __iwl4965_up(struct iwl_priv *priv)
5294 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5295 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5299 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5300 IWL_WARNING("Radio disabled by SW RF kill (module "
5302 iwl_rfkill_set_hw_state(priv);
5306 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5307 IWL_ERROR("ucode not available for device bringup\n");
5311 /* If platform's RF_KILL switch is NOT set to KILL */
5312 if (iwl_read32(priv, CSR_GP_CNTRL) &
5313 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5314 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5316 set_bit(STATUS_RF_KILL_HW, &priv->status);
5317 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5318 iwl_rfkill_set_hw_state(priv);
5319 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5324 iwl_rfkill_set_hw_state(priv);
5325 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5327 ret = priv->cfg->ops->lib->hw_nic_init(priv);
5329 IWL_ERROR("Unable to init nic\n");
5333 /* make sure rfkill handshake bits are cleared */
5334 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5335 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5336 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5338 /* clear (again), then enable host interrupts */
5339 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5340 iwl4965_enable_interrupts(priv);
5342 /* really make sure rfkill handshake bits are cleared */
5343 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5344 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5346 /* Copy original ucode data image from disk into backup cache.
5347 * This will be used to initialize the on-board processor's
5348 * data SRAM for a clean start when the runtime program first loads. */
5349 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5350 priv->ucode_data.len);
5352 /* We return success when we resume from suspend and rf_kill is on. */
5353 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5356 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5358 iwlcore_clear_stations_table(priv);
5360 /* load bootstrap state machine,
5361 * load bootstrap program into processor's memory,
5362 * prepare to load the "initialize" uCode */
5363 ret = priv->cfg->ops->lib->load_ucode(priv);
5366 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5370 /* start card; "initialize" will load runtime ucode */
5371 iwl4965_nic_start(priv);
5373 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5378 set_bit(STATUS_EXIT_PENDING, &priv->status);
5379 __iwl4965_down(priv);
5381 /* tried to restart and config the device for as long as our
5382 * patience could withstand */
5383 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5388 /*****************************************************************************
5390 * Workqueue callbacks
5392 *****************************************************************************/
5394 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5396 struct iwl_priv *priv =
5397 container_of(data, struct iwl_priv, init_alive_start.work);
5399 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5402 mutex_lock(&priv->mutex);
5403 iwl4965_init_alive_start(priv);
5404 mutex_unlock(&priv->mutex);
5407 static void iwl4965_bg_alive_start(struct work_struct *data)
5409 struct iwl_priv *priv =
5410 container_of(data, struct iwl_priv, alive_start.work);
5412 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5415 mutex_lock(&priv->mutex);
5416 iwl4965_alive_start(priv);
5417 mutex_unlock(&priv->mutex);
5420 static void iwl4965_bg_rf_kill(struct work_struct *work)
5422 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5424 wake_up_interruptible(&priv->wait_command_queue);
5426 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5429 mutex_lock(&priv->mutex);
5431 if (!iwl_is_rfkill(priv)) {
5432 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5433 "HW and/or SW RF Kill no longer active, restarting "
5435 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5436 queue_work(priv->workqueue, &priv->restart);
5438 /* make sure mac80211 stop sending Tx frame */
5439 if (priv->mac80211_registered)
5440 ieee80211_stop_queues(priv->hw);
5442 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5443 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5444 "disabled by SW switch\n");
5446 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5447 "Kill switch must be turned off for "
5448 "wireless networking to work.\n");
5450 iwl_rfkill_set_hw_state(priv);
5452 mutex_unlock(&priv->mutex);
5455 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5457 static void iwl4965_bg_scan_check(struct work_struct *data)
5459 struct iwl_priv *priv =
5460 container_of(data, struct iwl_priv, scan_check.work);
5462 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5465 mutex_lock(&priv->mutex);
5466 if (test_bit(STATUS_SCANNING, &priv->status) ||
5467 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5468 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5469 "Scan completion watchdog resetting adapter (%dms)\n",
5470 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5472 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5473 iwl4965_send_scan_abort(priv);
5475 mutex_unlock(&priv->mutex);
5478 static void iwl4965_bg_request_scan(struct work_struct *data)
5480 struct iwl_priv *priv =
5481 container_of(data, struct iwl_priv, request_scan);
5482 struct iwl_host_cmd cmd = {
5483 .id = REPLY_SCAN_CMD,
5484 .len = sizeof(struct iwl4965_scan_cmd),
5485 .meta.flags = CMD_SIZE_HUGE,
5487 struct iwl4965_scan_cmd *scan;
5488 struct ieee80211_conf *conf = NULL;
5490 enum ieee80211_band band;
5494 conf = ieee80211_get_hw_conf(priv->hw);
5496 mutex_lock(&priv->mutex);
5498 if (!iwl_is_ready(priv)) {
5499 IWL_WARNING("request scan called when driver not ready.\n");
5503 /* Make sure the scan wasn't cancelled before this queued work
5504 * was given the chance to run... */
5505 if (!test_bit(STATUS_SCANNING, &priv->status))
5508 /* This should never be called or scheduled if there is currently
5509 * a scan active in the hardware. */
5510 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5511 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5512 "Ignoring second request.\n");
5517 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5518 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5522 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5523 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5527 if (iwl_is_rfkill(priv)) {
5528 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5532 if (!test_bit(STATUS_READY, &priv->status)) {
5533 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5537 if (!priv->scan_bands) {
5538 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5543 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5544 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5551 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5553 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5554 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5556 if (iwl_is_associated(priv)) {
5559 u32 suspend_time = 100;
5560 u32 scan_suspend_time = 100;
5561 unsigned long flags;
5563 IWL_DEBUG_INFO("Scanning while associated...\n");
5565 spin_lock_irqsave(&priv->lock, flags);
5566 interval = priv->beacon_int;
5567 spin_unlock_irqrestore(&priv->lock, flags);
5569 scan->suspend_time = 0;
5570 scan->max_out_time = cpu_to_le32(200 * 1024);
5572 interval = suspend_time;
5574 extra = (suspend_time / interval) << 22;
5575 scan_suspend_time = (extra |
5576 ((suspend_time % interval) * 1024));
5577 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5578 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5579 scan_suspend_time, interval);
5582 /* We should add the ability for user to lock to PASSIVE ONLY */
5583 if (priv->one_direct_scan) {
5585 ("Kicking off one direct scan for '%s'\n",
5586 iwl4965_escape_essid(priv->direct_ssid,
5587 priv->direct_ssid_len));
5588 scan->direct_scan[0].id = WLAN_EID_SSID;
5589 scan->direct_scan[0].len = priv->direct_ssid_len;
5590 memcpy(scan->direct_scan[0].ssid,
5591 priv->direct_ssid, priv->direct_ssid_len);
5593 } else if (!iwl_is_associated(priv) && priv->essid_len) {
5595 ("Kicking off one direct scan for '%s' when not associated\n",
5596 iwl4965_escape_essid(priv->essid, priv->essid_len));
5597 scan->direct_scan[0].id = WLAN_EID_SSID;
5598 scan->direct_scan[0].len = priv->essid_len;
5599 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
5602 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5606 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5607 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5608 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5611 switch (priv->scan_bands) {
5613 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5614 scan->tx_cmd.rate_n_flags =
5615 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5616 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5618 scan->good_CRC_th = 0;
5619 band = IEEE80211_BAND_2GHZ;
5623 scan->tx_cmd.rate_n_flags =
5624 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5625 RATE_MCS_ANT_B_MSK);
5626 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5627 band = IEEE80211_BAND_5GHZ;
5631 IWL_WARNING("Invalid scan band count\n");
5635 /* We don't build a direct scan probe request; the uCode will do
5636 * that based on the direct_mask added to each channel entry */
5637 cmd_len = iwl4965_fill_probe_req(priv, band,
5638 (struct ieee80211_mgmt *)scan->data,
5639 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5641 scan->tx_cmd.len = cpu_to_le16(cmd_len);
5642 /* select Rx chains */
5644 /* Force use of chains B and C (0x6) for scan Rx.
5645 * Avoid A (0x1) because of its off-channel reception on A-band.
5646 * MIMO is not used here, but value is required to make uCode happy. */
5647 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5648 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5649 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5650 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5652 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5653 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5656 scan->channel_count =
5657 iwl4965_get_channels_for_scan(
5658 priv, band, 1, /* active */
5660 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5662 scan->channel_count =
5663 iwl4965_get_channels_for_scan(
5664 priv, band, 0, /* passive */
5666 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5668 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
5669 RXON_FILTER_BCON_AWARE_MSK);
5670 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5671 scan->channel_count * sizeof(struct iwl4965_scan_channel);
5673 scan->len = cpu_to_le16(cmd.len);
5675 set_bit(STATUS_SCAN_HW, &priv->status);
5676 ret = iwl_send_cmd_sync(priv, &cmd);
5680 queue_delayed_work(priv->workqueue, &priv->scan_check,
5681 IWL_SCAN_CHECK_WATCHDOG);
5683 mutex_unlock(&priv->mutex);
5687 /* inform mac80211 scan aborted */
5688 queue_work(priv->workqueue, &priv->scan_completed);
5689 mutex_unlock(&priv->mutex);
5692 static void iwl4965_bg_up(struct work_struct *data)
5694 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5696 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5699 mutex_lock(&priv->mutex);
5701 mutex_unlock(&priv->mutex);
5704 static void iwl4965_bg_restart(struct work_struct *data)
5706 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5708 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5712 queue_work(priv->workqueue, &priv->up);
5715 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5717 struct iwl_priv *priv =
5718 container_of(data, struct iwl_priv, rx_replenish);
5720 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5723 mutex_lock(&priv->mutex);
5724 iwl4965_rx_replenish(priv);
5725 mutex_unlock(&priv->mutex);
5728 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5730 static void iwl4965_post_associate(struct iwl_priv *priv)
5732 struct ieee80211_conf *conf = NULL;
5734 DECLARE_MAC_BUF(mac);
5736 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5737 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
5741 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5743 print_mac(mac, priv->active_rxon.bssid_addr));
5746 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5750 if (!priv->vif || !priv->is_open)
5753 iwl4965_scan_cancel_timeout(priv, 200);
5755 conf = ieee80211_get_hw_conf(priv->hw);
5757 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5758 iwl4965_commit_rxon(priv);
5760 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5761 iwl4965_setup_rxon_timing(priv);
5762 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5763 sizeof(priv->rxon_timing), &priv->rxon_timing);
5765 IWL_WARNING("REPLY_RXON_TIMING failed - "
5766 "Attempting to continue.\n");
5768 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5770 #ifdef CONFIG_IWL4965_HT
5771 if (priv->current_ht_config.is_ht)
5772 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
5773 #endif /* CONFIG_IWL4965_HT*/
5774 iwl4965_set_rxon_chain(priv);
5775 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5777 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5778 priv->assoc_id, priv->beacon_int);
5780 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5781 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5783 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5785 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5786 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5787 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
5789 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5791 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5792 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5796 iwl4965_commit_rxon(priv);
5798 switch (priv->iw_mode) {
5799 case IEEE80211_IF_TYPE_STA:
5800 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
5803 case IEEE80211_IF_TYPE_IBSS:
5805 /* clear out the station table */
5806 iwlcore_clear_stations_table(priv);
5808 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
5809 iwl4965_rxon_add_station(priv, priv->bssid, 0);
5810 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
5811 iwl4965_send_beacon_cmd(priv);
5816 IWL_ERROR("%s Should not be called in %d mode\n",
5817 __FUNCTION__, priv->iw_mode);
5821 iwl4965_sequence_reset(priv);
5823 /* Enable Rx differential gain and sensitivity calibrations */
5824 iwl_chain_noise_reset(priv);
5825 priv->start_calib = 1;
5827 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
5828 priv->assoc_station_added = 1;
5830 iwl4965_activate_qos(priv, 0);
5832 iwl_power_update_mode(priv, 0);
5833 /* we have just associated, don't start scan too early */
5834 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5838 static void iwl4965_bg_post_associate(struct work_struct *data)
5840 struct iwl_priv *priv = container_of(data, struct iwl_priv,
5841 post_associate.work);
5843 mutex_lock(&priv->mutex);
5844 iwl4965_post_associate(priv);
5845 mutex_unlock(&priv->mutex);
5849 static void iwl4965_bg_abort_scan(struct work_struct *work)
5851 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
5853 if (!iwl_is_ready(priv))
5856 mutex_lock(&priv->mutex);
5858 set_bit(STATUS_SCAN_ABORTING, &priv->status);
5859 iwl4965_send_scan_abort(priv);
5861 mutex_unlock(&priv->mutex);
5864 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
5866 static void iwl4965_bg_scan_completed(struct work_struct *work)
5868 struct iwl_priv *priv =
5869 container_of(work, struct iwl_priv, scan_completed);
5871 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
5873 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5876 if (test_bit(STATUS_CONF_PENDING, &priv->status))
5877 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
5879 ieee80211_scan_completed(priv->hw);
5881 /* Since setting the TXPOWER may have been deferred while
5882 * performing the scan, fire one off */
5883 mutex_lock(&priv->mutex);
5884 iwl4965_hw_reg_send_txpower(priv);
5885 mutex_unlock(&priv->mutex);
5888 /*****************************************************************************
5890 * mac80211 entry point functions
5892 *****************************************************************************/
5894 #define UCODE_READY_TIMEOUT (2 * HZ)
5896 static int iwl4965_mac_start(struct ieee80211_hw *hw)
5898 struct iwl_priv *priv = hw->priv;
5901 IWL_DEBUG_MAC80211("enter\n");
5903 if (pci_enable_device(priv->pci_dev)) {
5904 IWL_ERROR("Fail to pci_enable_device\n");
5907 pci_restore_state(priv->pci_dev);
5908 pci_enable_msi(priv->pci_dev);
5910 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
5913 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
5914 goto out_disable_msi;
5917 /* we should be verifying the device is ready to be opened */
5918 mutex_lock(&priv->mutex);
5920 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
5921 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5922 * ucode filename and max sizes are card-specific. */
5924 if (!priv->ucode_code.len) {
5925 ret = iwl4965_read_ucode(priv);
5927 IWL_ERROR("Could not read microcode: %d\n", ret);
5928 mutex_unlock(&priv->mutex);
5929 goto out_release_irq;
5933 ret = __iwl4965_up(priv);
5935 mutex_unlock(&priv->mutex);
5938 goto out_release_irq;
5940 IWL_DEBUG_INFO("Start UP work done.\n");
5942 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5945 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5946 * mac80211 will not be run successfully. */
5947 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5948 test_bit(STATUS_READY, &priv->status),
5949 UCODE_READY_TIMEOUT);
5951 if (!test_bit(STATUS_READY, &priv->status)) {
5952 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5953 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5955 goto out_release_irq;
5960 IWL_DEBUG_MAC80211("leave\n");
5964 free_irq(priv->pci_dev->irq, priv);
5966 pci_disable_msi(priv->pci_dev);
5967 pci_disable_device(priv->pci_dev);
5969 IWL_DEBUG_MAC80211("leave - failed\n");
5973 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
5975 struct iwl_priv *priv = hw->priv;
5977 IWL_DEBUG_MAC80211("enter\n");
5979 if (!priv->is_open) {
5980 IWL_DEBUG_MAC80211("leave - skip\n");
5986 if (iwl_is_ready_rf(priv)) {
5987 /* stop mac, cancel any scan request and clear
5988 * RXON_FILTER_ASSOC_MSK BIT
5990 mutex_lock(&priv->mutex);
5991 iwl4965_scan_cancel_timeout(priv, 100);
5992 cancel_delayed_work(&priv->post_associate);
5993 mutex_unlock(&priv->mutex);
5998 flush_workqueue(priv->workqueue);
5999 free_irq(priv->pci_dev->irq, priv);
6000 pci_disable_msi(priv->pci_dev);
6001 pci_save_state(priv->pci_dev);
6002 pci_disable_device(priv->pci_dev);
6004 IWL_DEBUG_MAC80211("leave\n");
6007 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6008 struct ieee80211_tx_control *ctl)
6010 struct iwl_priv *priv = hw->priv;
6012 IWL_DEBUG_MAC80211("enter\n");
6014 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6015 IWL_DEBUG_MAC80211("leave - monitor\n");
6019 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6020 ctl->tx_rate->bitrate);
6022 if (iwl4965_tx_skb(priv, skb, ctl))
6023 dev_kfree_skb_any(skb);
6025 IWL_DEBUG_MAC80211("leave\n");
6029 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6030 struct ieee80211_if_init_conf *conf)
6032 struct iwl_priv *priv = hw->priv;
6033 unsigned long flags;
6034 DECLARE_MAC_BUF(mac);
6036 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6039 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6043 spin_lock_irqsave(&priv->lock, flags);
6044 priv->vif = conf->vif;
6046 spin_unlock_irqrestore(&priv->lock, flags);
6048 mutex_lock(&priv->mutex);
6050 if (conf->mac_addr) {
6051 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6052 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6055 if (iwl_is_ready(priv))
6056 iwl4965_set_mode(priv, conf->type);
6058 mutex_unlock(&priv->mutex);
6060 IWL_DEBUG_MAC80211("leave\n");
6065 * iwl4965_mac_config - mac80211 config callback
6067 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6068 * be set inappropriately and the driver currently sets the hardware up to
6069 * use it whenever needed.
6071 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6073 struct iwl_priv *priv = hw->priv;
6074 const struct iwl_channel_info *ch_info;
6075 unsigned long flags;
6078 mutex_lock(&priv->mutex);
6079 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6081 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6083 if (!iwl_is_ready(priv)) {
6084 IWL_DEBUG_MAC80211("leave - not ready\n");
6089 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6090 test_bit(STATUS_SCANNING, &priv->status))) {
6091 IWL_DEBUG_MAC80211("leave - scanning\n");
6092 set_bit(STATUS_CONF_PENDING, &priv->status);
6093 mutex_unlock(&priv->mutex);
6097 spin_lock_irqsave(&priv->lock, flags);
6099 ch_info = iwl_get_channel_info(priv, conf->channel->band,
6100 ieee80211_frequency_to_channel(conf->channel->center_freq));
6101 if (!is_channel_valid(ch_info)) {
6102 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6103 spin_unlock_irqrestore(&priv->lock, flags);
6108 #ifdef CONFIG_IWL4965_HT
6109 /* if we are switching from ht to 2.4 clear flags
6110 * from any ht related info since 2.4 does not
6112 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6113 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6114 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6117 priv->staging_rxon.flags = 0;
6118 #endif /* CONFIG_IWL4965_HT */
6120 iwlcore_set_rxon_channel(priv, conf->channel->band,
6121 ieee80211_frequency_to_channel(conf->channel->center_freq));
6123 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6125 /* The list of supported rates and rate mask can be different
6126 * for each band; since the band may have changed, reset
6127 * the rate mask to what mac80211 lists */
6128 iwl4965_set_rate(priv);
6130 spin_unlock_irqrestore(&priv->lock, flags);
6132 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6133 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6134 iwl4965_hw_channel_switch(priv, conf->channel);
6139 if (priv->cfg->ops->lib->radio_kill_sw)
6140 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6142 if (!conf->radio_enabled) {
6143 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6147 if (iwl_is_rfkill(priv)) {
6148 IWL_DEBUG_MAC80211("leave - RF kill\n");
6153 iwl4965_set_rate(priv);
6155 if (memcmp(&priv->active_rxon,
6156 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6157 iwl4965_commit_rxon(priv);
6159 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6161 IWL_DEBUG_MAC80211("leave\n");
6164 clear_bit(STATUS_CONF_PENDING, &priv->status);
6165 mutex_unlock(&priv->mutex);
6169 static void iwl4965_config_ap(struct iwl_priv *priv)
6173 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6176 /* The following should be done only at AP bring up */
6177 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6179 /* RXON - unassoc (to set timing command) */
6180 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6181 iwl4965_commit_rxon(priv);
6184 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6185 iwl4965_setup_rxon_timing(priv);
6186 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6187 sizeof(priv->rxon_timing), &priv->rxon_timing);
6189 IWL_WARNING("REPLY_RXON_TIMING failed - "
6190 "Attempting to continue.\n");
6192 iwl4965_set_rxon_chain(priv);
6194 /* FIXME: what should be the assoc_id for AP? */
6195 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6196 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6197 priv->staging_rxon.flags |=
6198 RXON_FLG_SHORT_PREAMBLE_MSK;
6200 priv->staging_rxon.flags &=
6201 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6203 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6204 if (priv->assoc_capability &
6205 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6206 priv->staging_rxon.flags |=
6207 RXON_FLG_SHORT_SLOT_MSK;
6209 priv->staging_rxon.flags &=
6210 ~RXON_FLG_SHORT_SLOT_MSK;
6212 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6213 priv->staging_rxon.flags &=
6214 ~RXON_FLG_SHORT_SLOT_MSK;
6216 /* restore RXON assoc */
6217 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6218 iwl4965_commit_rxon(priv);
6219 iwl4965_activate_qos(priv, 1);
6220 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6222 iwl4965_send_beacon_cmd(priv);
6224 /* FIXME - we need to add code here to detect a totally new
6225 * configuration, reset the AP, unassoc, rxon timing, assoc,
6226 * clear sta table, add BCAST sta... */
6229 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6230 struct ieee80211_vif *vif,
6231 struct ieee80211_if_conf *conf)
6233 struct iwl_priv *priv = hw->priv;
6234 DECLARE_MAC_BUF(mac);
6235 unsigned long flags;
6241 if (priv->vif != vif) {
6242 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6246 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6247 (!conf->beacon || !conf->ssid_len)) {
6249 ("Leaving in AP mode because HostAPD is not ready.\n");
6253 if (!iwl_is_alive(priv))
6256 mutex_lock(&priv->mutex);
6259 IWL_DEBUG_MAC80211("bssid: %s\n",
6260 print_mac(mac, conf->bssid));
6263 * very dubious code was here; the probe filtering flag is never set:
6265 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6266 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6269 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6271 conf->bssid = priv->mac_addr;
6272 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6273 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6274 print_mac(mac, conf->bssid));
6276 if (priv->ibss_beacon)
6277 dev_kfree_skb(priv->ibss_beacon);
6279 priv->ibss_beacon = conf->beacon;
6282 if (iwl_is_rfkill(priv))
6285 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6286 !is_multicast_ether_addr(conf->bssid)) {
6287 /* If there is currently a HW scan going on in the background
6288 * then we need to cancel it else the RXON below will fail. */
6289 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6290 IWL_WARNING("Aborted scan still in progress "
6292 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6293 mutex_unlock(&priv->mutex);
6296 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6298 /* TODO: Audit driver for usage of these members and see
6299 * if mac80211 deprecates them (priv->bssid looks like it
6300 * shouldn't be there, but I haven't scanned the IBSS code
6301 * to verify) - jpk */
6302 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6304 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6305 iwl4965_config_ap(priv);
6307 rc = iwl4965_commit_rxon(priv);
6308 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6309 iwl4965_rxon_add_station(
6310 priv, priv->active_rxon.bssid_addr, 1);
6314 iwl4965_scan_cancel_timeout(priv, 100);
6315 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6316 iwl4965_commit_rxon(priv);
6320 spin_lock_irqsave(&priv->lock, flags);
6321 if (!conf->ssid_len)
6322 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6324 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6326 priv->essid_len = conf->ssid_len;
6327 spin_unlock_irqrestore(&priv->lock, flags);
6329 IWL_DEBUG_MAC80211("leave\n");
6330 mutex_unlock(&priv->mutex);
6335 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6336 unsigned int changed_flags,
6337 unsigned int *total_flags,
6338 int mc_count, struct dev_addr_list *mc_list)
6342 * see also iwl4965_connection_init_rx_config
6347 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6348 struct ieee80211_if_init_conf *conf)
6350 struct iwl_priv *priv = hw->priv;
6352 IWL_DEBUG_MAC80211("enter\n");
6354 mutex_lock(&priv->mutex);
6356 if (iwl_is_ready_rf(priv)) {
6357 iwl4965_scan_cancel_timeout(priv, 100);
6358 cancel_delayed_work(&priv->post_associate);
6359 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6360 iwl4965_commit_rxon(priv);
6362 if (priv->vif == conf->vif) {
6364 memset(priv->bssid, 0, ETH_ALEN);
6365 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6366 priv->essid_len = 0;
6368 mutex_unlock(&priv->mutex);
6370 IWL_DEBUG_MAC80211("leave\n");
6375 #ifdef CONFIG_IWL4965_HT
6376 static void iwl4965_ht_conf(struct iwl_priv *priv,
6377 struct ieee80211_bss_conf *bss_conf)
6379 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6380 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6381 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6383 IWL_DEBUG_MAC80211("enter: \n");
6385 iwl_conf->is_ht = bss_conf->assoc_ht;
6387 if (!iwl_conf->is_ht)
6390 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6392 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6393 iwl_conf->sgf |= 0x1;
6394 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6395 iwl_conf->sgf |= 0x2;
6397 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6398 iwl_conf->max_amsdu_size =
6399 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6401 iwl_conf->supported_chan_width =
6402 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6403 iwl_conf->extension_chan_offset =
6404 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6405 /* If no above or below channel supplied disable FAT channel */
6406 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6407 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6408 iwl_conf->supported_chan_width = 0;
6410 iwl_conf->tx_mimo_ps_mode =
6411 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6412 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6414 iwl_conf->control_channel = ht_bss_conf->primary_channel;
6415 iwl_conf->tx_chan_width =
6416 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6417 iwl_conf->ht_protection =
6418 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6419 iwl_conf->non_GF_STA_present =
6420 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6422 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6423 IWL_DEBUG_MAC80211("leave\n");
6426 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6427 struct ieee80211_bss_conf *bss_conf)
6432 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6433 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6434 struct ieee80211_vif *vif,
6435 struct ieee80211_bss_conf *bss_conf,
6438 struct iwl_priv *priv = hw->priv;
6440 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6442 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6443 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6444 bss_conf->use_short_preamble);
6445 if (bss_conf->use_short_preamble)
6446 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6448 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6451 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6452 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6453 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6454 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6456 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6459 if (changes & BSS_CHANGED_HT) {
6460 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6461 iwl4965_ht_conf(priv, bss_conf);
6462 iwl4965_set_rxon_chain(priv);
6465 if (changes & BSS_CHANGED_ASSOC) {
6466 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6467 /* This should never happen as this function should
6468 * never be called from interrupt context. */
6469 if (WARN_ON_ONCE(in_interrupt()))
6471 if (bss_conf->assoc) {
6472 priv->assoc_id = bss_conf->aid;
6473 priv->beacon_int = bss_conf->beacon_int;
6474 priv->timestamp = bss_conf->timestamp;
6475 priv->assoc_capability = bss_conf->assoc_capability;
6476 priv->next_scan_jiffies = jiffies +
6477 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6478 mutex_lock(&priv->mutex);
6479 iwl4965_post_associate(priv);
6480 mutex_unlock(&priv->mutex);
6483 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6485 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6486 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6487 iwl_send_rxon_assoc(priv);
6492 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6495 unsigned long flags;
6496 struct iwl_priv *priv = hw->priv;
6498 IWL_DEBUG_MAC80211("enter\n");
6500 mutex_lock(&priv->mutex);
6501 spin_lock_irqsave(&priv->lock, flags);
6503 if (!iwl_is_ready_rf(priv)) {
6505 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6509 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
6511 IWL_ERROR("ERROR: APs don't scan\n");
6515 /* we don't schedule scan within next_scan_jiffies period */
6516 if (priv->next_scan_jiffies &&
6517 time_after(priv->next_scan_jiffies, jiffies)) {
6521 /* if we just finished scan ask for delay */
6522 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6523 IWL_DELAY_NEXT_SCAN, jiffies)) {
6528 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6529 iwl4965_escape_essid(ssid, len), (int)len);
6531 priv->one_direct_scan = 1;
6532 priv->direct_ssid_len = (u8)
6533 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6534 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6536 priv->one_direct_scan = 0;
6538 rc = iwl4965_scan_initiate(priv);
6540 IWL_DEBUG_MAC80211("leave\n");
6543 spin_unlock_irqrestore(&priv->lock, flags);
6544 mutex_unlock(&priv->mutex);
6549 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6550 struct ieee80211_key_conf *keyconf, const u8 *addr,
6551 u32 iv32, u16 *phase1key)
6553 struct iwl_priv *priv = hw->priv;
6554 u8 sta_id = IWL_INVALID_STATION;
6555 unsigned long flags;
6556 __le16 key_flags = 0;
6558 DECLARE_MAC_BUF(mac);
6560 IWL_DEBUG_MAC80211("enter\n");
6562 sta_id = iwl_find_station(priv, addr);
6563 if (sta_id == IWL_INVALID_STATION) {
6564 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6565 print_mac(mac, addr));
6569 iwl4965_scan_cancel_timeout(priv, 100);
6571 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6572 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6573 key_flags &= ~STA_KEY_FLG_INVALID;
6575 if (sta_id == priv->hw_params.bcast_sta_id)
6576 key_flags |= STA_KEY_MULTICAST_MSK;
6578 spin_lock_irqsave(&priv->sta_lock, flags);
6580 priv->stations[sta_id].sta.key.key_flags = key_flags;
6581 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6583 for (i = 0; i < 5; i++)
6584 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6585 cpu_to_le16(phase1key[i]);
6587 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6588 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6590 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6592 spin_unlock_irqrestore(&priv->sta_lock, flags);
6594 IWL_DEBUG_MAC80211("leave\n");
6597 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6598 const u8 *local_addr, const u8 *addr,
6599 struct ieee80211_key_conf *key)
6601 struct iwl_priv *priv = hw->priv;
6602 DECLARE_MAC_BUF(mac);
6604 u8 sta_id = IWL_INVALID_STATION;
6605 u8 is_default_wep_key = 0;
6607 IWL_DEBUG_MAC80211("enter\n");
6609 if (priv->cfg->mod_params->sw_crypto) {
6610 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6614 if (is_zero_ether_addr(addr))
6615 /* only support pairwise keys */
6618 sta_id = iwl_find_station(priv, addr);
6619 if (sta_id == IWL_INVALID_STATION) {
6620 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6621 print_mac(mac, addr));
6626 mutex_lock(&priv->mutex);
6627 iwl4965_scan_cancel_timeout(priv, 100);
6628 mutex_unlock(&priv->mutex);
6630 /* If we are getting WEP group key and we didn't receive any key mapping
6631 * so far, we are in legacy wep mode (group key only), otherwise we are
6633 * In legacy wep mode, we use another host command to the uCode */
6634 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6635 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6637 is_default_wep_key = !priv->key_mapping_key;
6639 is_default_wep_key = priv->default_wep_key;
6644 if (is_default_wep_key)
6645 ret = iwl_set_default_wep_key(priv, key);
6647 ret = iwl_set_dynamic_key(priv, key, sta_id);
6649 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6652 if (is_default_wep_key)
6653 ret = iwl_remove_default_wep_key(priv, key);
6655 ret = iwl_remove_dynamic_key(priv, key, sta_id);
6657 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6663 IWL_DEBUG_MAC80211("leave\n");
6668 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
6669 const struct ieee80211_tx_queue_params *params)
6671 struct iwl_priv *priv = hw->priv;
6672 unsigned long flags;
6675 IWL_DEBUG_MAC80211("enter\n");
6677 if (!iwl_is_ready_rf(priv)) {
6678 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6682 if (queue >= AC_NUM) {
6683 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6687 if (!priv->qos_data.qos_enable) {
6688 priv->qos_data.qos_active = 0;
6689 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6692 q = AC_NUM - 1 - queue;
6694 spin_lock_irqsave(&priv->lock, flags);
6696 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6697 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6698 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6699 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6700 cpu_to_le16((params->txop * 32));
6702 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6703 priv->qos_data.qos_active = 1;
6705 spin_unlock_irqrestore(&priv->lock, flags);
6707 mutex_lock(&priv->mutex);
6708 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6709 iwl4965_activate_qos(priv, 1);
6710 else if (priv->assoc_id && iwl_is_associated(priv))
6711 iwl4965_activate_qos(priv, 0);
6713 mutex_unlock(&priv->mutex);
6715 IWL_DEBUG_MAC80211("leave\n");
6719 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
6720 struct ieee80211_tx_queue_stats *stats)
6722 struct iwl_priv *priv = hw->priv;
6724 struct iwl4965_tx_queue *txq;
6725 struct iwl4965_queue *q;
6726 unsigned long flags;
6728 IWL_DEBUG_MAC80211("enter\n");
6730 if (!iwl_is_ready_rf(priv)) {
6731 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6735 spin_lock_irqsave(&priv->lock, flags);
6737 for (i = 0; i < AC_NUM; i++) {
6738 txq = &priv->txq[i];
6740 avail = iwl4965_queue_space(q);
6742 stats->data[i].len = q->n_window - avail;
6743 stats->data[i].limit = q->n_window - q->high_mark;
6744 stats->data[i].count = q->n_window;
6747 spin_unlock_irqrestore(&priv->lock, flags);
6749 IWL_DEBUG_MAC80211("leave\n");
6754 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
6755 struct ieee80211_low_level_stats *stats)
6757 IWL_DEBUG_MAC80211("enter\n");
6758 IWL_DEBUG_MAC80211("leave\n");
6763 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
6765 IWL_DEBUG_MAC80211("enter\n");
6766 IWL_DEBUG_MAC80211("leave\n");
6771 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
6773 struct iwl_priv *priv = hw->priv;
6774 unsigned long flags;
6776 mutex_lock(&priv->mutex);
6777 IWL_DEBUG_MAC80211("enter\n");
6779 priv->lq_mngr.lq_ready = 0;
6780 #ifdef CONFIG_IWL4965_HT
6781 spin_lock_irqsave(&priv->lock, flags);
6782 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
6783 spin_unlock_irqrestore(&priv->lock, flags);
6784 #endif /* CONFIG_IWL4965_HT */
6786 iwlcore_reset_qos(priv);
6788 cancel_delayed_work(&priv->post_associate);
6790 spin_lock_irqsave(&priv->lock, flags);
6792 priv->assoc_capability = 0;
6793 priv->assoc_station_added = 0;
6795 /* new association get rid of ibss beacon skb */
6796 if (priv->ibss_beacon)
6797 dev_kfree_skb(priv->ibss_beacon);
6799 priv->ibss_beacon = NULL;
6801 priv->beacon_int = priv->hw->conf.beacon_int;
6802 priv->timestamp = 0;
6803 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
6804 priv->beacon_int = 0;
6806 spin_unlock_irqrestore(&priv->lock, flags);
6808 if (!iwl_is_ready_rf(priv)) {
6809 IWL_DEBUG_MAC80211("leave - not ready\n");
6810 mutex_unlock(&priv->mutex);
6814 /* we are restarting association process
6815 * clear RXON_FILTER_ASSOC_MSK bit
6817 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6818 iwl4965_scan_cancel_timeout(priv, 100);
6819 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6820 iwl4965_commit_rxon(priv);
6823 iwl_power_update_mode(priv, 0);
6825 /* Per mac80211.h: This is only used in IBSS mode... */
6826 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
6828 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6829 mutex_unlock(&priv->mutex);
6833 iwl4965_set_rate(priv);
6835 mutex_unlock(&priv->mutex);
6837 IWL_DEBUG_MAC80211("leave\n");
6840 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
6841 struct ieee80211_tx_control *control)
6843 struct iwl_priv *priv = hw->priv;
6844 unsigned long flags;
6846 mutex_lock(&priv->mutex);
6847 IWL_DEBUG_MAC80211("enter\n");
6849 if (!iwl_is_ready_rf(priv)) {
6850 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6851 mutex_unlock(&priv->mutex);
6855 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
6856 IWL_DEBUG_MAC80211("leave - not IBSS\n");
6857 mutex_unlock(&priv->mutex);
6861 spin_lock_irqsave(&priv->lock, flags);
6863 if (priv->ibss_beacon)
6864 dev_kfree_skb(priv->ibss_beacon);
6866 priv->ibss_beacon = skb;
6870 IWL_DEBUG_MAC80211("leave\n");
6871 spin_unlock_irqrestore(&priv->lock, flags);
6873 iwlcore_reset_qos(priv);
6875 queue_work(priv->workqueue, &priv->post_associate.work);
6877 mutex_unlock(&priv->mutex);
6882 /*****************************************************************************
6886 *****************************************************************************/
6888 #ifdef CONFIG_IWLWIFI_DEBUG
6891 * The following adds a new attribute to the sysfs representation
6892 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6893 * used for controlling the debug level.
6895 * See the level definitions in iwl for details.
6898 static ssize_t show_debug_level(struct device_driver *d, char *buf)
6900 return sprintf(buf, "0x%08X\n", iwl_debug_level);
6902 static ssize_t store_debug_level(struct device_driver *d,
6903 const char *buf, size_t count)
6905 char *p = (char *)buf;
6908 val = simple_strtoul(p, &p, 0);
6910 printk(KERN_INFO DRV_NAME
6911 ": %s is not in hex or decimal form.\n", buf);
6913 iwl_debug_level = val;
6915 return strnlen(buf, count);
6918 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
6919 show_debug_level, store_debug_level);
6921 #endif /* CONFIG_IWLWIFI_DEBUG */
6924 static ssize_t show_temperature(struct device *d,
6925 struct device_attribute *attr, char *buf)
6927 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6929 if (!iwl_is_alive(priv))
6932 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
6935 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6937 static ssize_t show_rs_window(struct device *d,
6938 struct device_attribute *attr,
6941 struct iwl_priv *priv = d->driver_data;
6942 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
6944 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
6946 static ssize_t show_tx_power(struct device *d,
6947 struct device_attribute *attr, char *buf)
6949 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6950 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6953 static ssize_t store_tx_power(struct device *d,
6954 struct device_attribute *attr,
6955 const char *buf, size_t count)
6957 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6958 char *p = (char *)buf;
6961 val = simple_strtoul(p, &p, 10);
6963 printk(KERN_INFO DRV_NAME
6964 ": %s is not in decimal form.\n", buf);
6966 iwl4965_hw_reg_set_txpower(priv, val);
6971 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6973 static ssize_t show_flags(struct device *d,
6974 struct device_attribute *attr, char *buf)
6976 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6978 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
6981 static ssize_t store_flags(struct device *d,
6982 struct device_attribute *attr,
6983 const char *buf, size_t count)
6985 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6986 u32 flags = simple_strtoul(buf, NULL, 0);
6988 mutex_lock(&priv->mutex);
6989 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
6990 /* Cancel any currently running scans... */
6991 if (iwl4965_scan_cancel_timeout(priv, 100))
6992 IWL_WARNING("Could not cancel scan.\n");
6994 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6996 priv->staging_rxon.flags = cpu_to_le32(flags);
6997 iwl4965_commit_rxon(priv);
7000 mutex_unlock(&priv->mutex);
7005 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7007 static ssize_t show_filter_flags(struct device *d,
7008 struct device_attribute *attr, char *buf)
7010 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7012 return sprintf(buf, "0x%04X\n",
7013 le32_to_cpu(priv->active_rxon.filter_flags));
7016 static ssize_t store_filter_flags(struct device *d,
7017 struct device_attribute *attr,
7018 const char *buf, size_t count)
7020 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7021 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7023 mutex_lock(&priv->mutex);
7024 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7025 /* Cancel any currently running scans... */
7026 if (iwl4965_scan_cancel_timeout(priv, 100))
7027 IWL_WARNING("Could not cancel scan.\n");
7029 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7030 "0x%04X\n", filter_flags);
7031 priv->staging_rxon.filter_flags =
7032 cpu_to_le32(filter_flags);
7033 iwl4965_commit_rxon(priv);
7036 mutex_unlock(&priv->mutex);
7041 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7042 store_filter_flags);
7044 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7046 static ssize_t show_measurement(struct device *d,
7047 struct device_attribute *attr, char *buf)
7049 struct iwl_priv *priv = dev_get_drvdata(d);
7050 struct iwl4965_spectrum_notification measure_report;
7051 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7052 u8 *data = (u8 *) & measure_report;
7053 unsigned long flags;
7055 spin_lock_irqsave(&priv->lock, flags);
7056 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7057 spin_unlock_irqrestore(&priv->lock, flags);
7060 memcpy(&measure_report, &priv->measure_report, size);
7061 priv->measurement_status = 0;
7062 spin_unlock_irqrestore(&priv->lock, flags);
7064 while (size && (PAGE_SIZE - len)) {
7065 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7066 PAGE_SIZE - len, 1);
7068 if (PAGE_SIZE - len)
7072 size -= min(size, 16U);
7078 static ssize_t store_measurement(struct device *d,
7079 struct device_attribute *attr,
7080 const char *buf, size_t count)
7082 struct iwl_priv *priv = dev_get_drvdata(d);
7083 struct ieee80211_measurement_params params = {
7084 .channel = le16_to_cpu(priv->active_rxon.channel),
7085 .start_time = cpu_to_le64(priv->last_tsf),
7086 .duration = cpu_to_le16(1),
7088 u8 type = IWL_MEASURE_BASIC;
7094 strncpy(buffer, buf, min(sizeof(buffer), count));
7095 channel = simple_strtoul(p, NULL, 0);
7097 params.channel = channel;
7100 while (*p && *p != ' ')
7103 type = simple_strtoul(p + 1, NULL, 0);
7106 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7107 "channel %d (for '%s')\n", type, params.channel, buf);
7108 iwl4965_get_measurement(priv, ¶ms, type);
7113 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7114 show_measurement, store_measurement);
7115 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7117 static ssize_t store_retry_rate(struct device *d,
7118 struct device_attribute *attr,
7119 const char *buf, size_t count)
7121 struct iwl_priv *priv = dev_get_drvdata(d);
7123 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7124 if (priv->retry_rate <= 0)
7125 priv->retry_rate = 1;
7130 static ssize_t show_retry_rate(struct device *d,
7131 struct device_attribute *attr, char *buf)
7133 struct iwl_priv *priv = dev_get_drvdata(d);
7134 return sprintf(buf, "%d", priv->retry_rate);
7137 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7140 static ssize_t store_power_level(struct device *d,
7141 struct device_attribute *attr,
7142 const char *buf, size_t count)
7144 struct iwl_priv *priv = dev_get_drvdata(d);
7148 mode = simple_strtoul(buf, NULL, 0);
7149 mutex_lock(&priv->mutex);
7151 if (!iwl_is_ready(priv)) {
7156 rc = iwl_power_set_user_mode(priv, mode);
7158 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7164 mutex_unlock(&priv->mutex);
7168 #define MAX_WX_STRING 80
7170 /* Values are in microsecond */
7171 static const s32 timeout_duration[] = {
7178 static const s32 period_duration[] = {
7186 static ssize_t show_power_level(struct device *d,
7187 struct device_attribute *attr, char *buf)
7189 struct iwl_priv *priv = dev_get_drvdata(d);
7190 int level = priv->power_data.power_mode;
7193 p += sprintf(p, "%d ", level);
7195 case IWL_POWER_MODE_CAM:
7197 p += sprintf(p, "(AC)");
7199 case IWL_POWER_BATTERY:
7200 p += sprintf(p, "(BATTERY)");
7204 "(Timeout %dms, Period %dms)",
7205 timeout_duration[level - 1] / 1000,
7206 period_duration[level - 1] / 1000);
7209 if (!(priv->power_mode & IWL_POWER_ENABLED))
7210 p += sprintf(p, " OFF\n");
7212 p += sprintf(p, " \n");
7214 p += sprintf(p, " \n");
7215 return (p - buf + 1);
7218 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7221 static ssize_t show_channels(struct device *d,
7222 struct device_attribute *attr, char *buf)
7224 /* all this shit doesn't belong into sysfs anyway */
7228 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7230 static ssize_t show_statistics(struct device *d,
7231 struct device_attribute *attr, char *buf)
7233 struct iwl_priv *priv = dev_get_drvdata(d);
7234 u32 size = sizeof(struct iwl4965_notif_statistics);
7235 u32 len = 0, ofs = 0;
7236 u8 *data = (u8 *) & priv->statistics;
7239 if (!iwl_is_alive(priv))
7242 mutex_lock(&priv->mutex);
7243 rc = iwl_send_statistics_request(priv, 0);
7244 mutex_unlock(&priv->mutex);
7248 "Error sending statistics request: 0x%08X\n", rc);
7252 while (size && (PAGE_SIZE - len)) {
7253 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7254 PAGE_SIZE - len, 1);
7256 if (PAGE_SIZE - len)
7260 size -= min(size, 16U);
7266 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7268 static ssize_t show_antenna(struct device *d,
7269 struct device_attribute *attr, char *buf)
7271 struct iwl_priv *priv = dev_get_drvdata(d);
7273 if (!iwl_is_alive(priv))
7276 return sprintf(buf, "%d\n", priv->antenna);
7279 static ssize_t store_antenna(struct device *d,
7280 struct device_attribute *attr,
7281 const char *buf, size_t count)
7284 struct iwl_priv *priv = dev_get_drvdata(d);
7289 if (sscanf(buf, "%1i", &ant) != 1) {
7290 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7294 if ((ant >= 0) && (ant <= 2)) {
7295 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7296 priv->antenna = (enum iwl4965_antenna)ant;
7298 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7304 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7306 static ssize_t show_status(struct device *d,
7307 struct device_attribute *attr, char *buf)
7309 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7310 if (!iwl_is_alive(priv))
7312 return sprintf(buf, "0x%08x\n", (int)priv->status);
7315 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7317 static ssize_t dump_error_log(struct device *d,
7318 struct device_attribute *attr,
7319 const char *buf, size_t count)
7321 char *p = (char *)buf;
7324 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7326 return strnlen(buf, count);
7329 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7331 static ssize_t dump_event_log(struct device *d,
7332 struct device_attribute *attr,
7333 const char *buf, size_t count)
7335 char *p = (char *)buf;
7338 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7340 return strnlen(buf, count);
7343 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7345 /*****************************************************************************
7347 * driver setup and teardown
7349 *****************************************************************************/
7351 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7353 priv->workqueue = create_workqueue(DRV_NAME);
7355 init_waitqueue_head(&priv->wait_command_queue);
7357 INIT_WORK(&priv->up, iwl4965_bg_up);
7358 INIT_WORK(&priv->restart, iwl4965_bg_restart);
7359 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7360 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7361 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7362 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7363 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7364 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7365 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7366 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7367 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7368 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7370 iwl4965_hw_setup_deferred_work(priv);
7372 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7373 iwl4965_irq_tasklet, (unsigned long)priv);
7376 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7378 iwl4965_hw_cancel_deferred_work(priv);
7380 cancel_delayed_work_sync(&priv->init_alive_start);
7381 cancel_delayed_work(&priv->scan_check);
7382 cancel_delayed_work(&priv->alive_start);
7383 cancel_delayed_work(&priv->post_associate);
7384 cancel_work_sync(&priv->beacon_update);
7387 static struct attribute *iwl4965_sysfs_entries[] = {
7388 &dev_attr_antenna.attr,
7389 &dev_attr_channels.attr,
7390 &dev_attr_dump_errors.attr,
7391 &dev_attr_dump_events.attr,
7392 &dev_attr_flags.attr,
7393 &dev_attr_filter_flags.attr,
7394 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7395 &dev_attr_measurement.attr,
7397 &dev_attr_power_level.attr,
7398 &dev_attr_retry_rate.attr,
7399 &dev_attr_rs_window.attr,
7400 &dev_attr_statistics.attr,
7401 &dev_attr_status.attr,
7402 &dev_attr_temperature.attr,
7403 &dev_attr_tx_power.attr,
7408 static struct attribute_group iwl4965_attribute_group = {
7409 .name = NULL, /* put in device directory */
7410 .attrs = iwl4965_sysfs_entries,
7413 static struct ieee80211_ops iwl4965_hw_ops = {
7414 .tx = iwl4965_mac_tx,
7415 .start = iwl4965_mac_start,
7416 .stop = iwl4965_mac_stop,
7417 .add_interface = iwl4965_mac_add_interface,
7418 .remove_interface = iwl4965_mac_remove_interface,
7419 .config = iwl4965_mac_config,
7420 .config_interface = iwl4965_mac_config_interface,
7421 .configure_filter = iwl4965_configure_filter,
7422 .set_key = iwl4965_mac_set_key,
7423 .update_tkip_key = iwl4965_mac_update_tkip_key,
7424 .get_stats = iwl4965_mac_get_stats,
7425 .get_tx_stats = iwl4965_mac_get_tx_stats,
7426 .conf_tx = iwl4965_mac_conf_tx,
7427 .get_tsf = iwl4965_mac_get_tsf,
7428 .reset_tsf = iwl4965_mac_reset_tsf,
7429 .beacon_update = iwl4965_mac_beacon_update,
7430 .bss_info_changed = iwl4965_bss_info_changed,
7431 #ifdef CONFIG_IWL4965_HT
7432 .ampdu_action = iwl4965_mac_ampdu_action,
7433 #endif /* CONFIG_IWL4965_HT */
7434 .hw_scan = iwl4965_mac_hw_scan
7437 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7440 struct iwl_priv *priv;
7441 struct ieee80211_hw *hw;
7442 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7443 unsigned long flags;
7444 DECLARE_MAC_BUF(mac);
7446 /************************
7447 * 1. Allocating HW data
7448 ************************/
7450 /* Disabling hardware scan means that mac80211 will perform scans
7451 * "the hard way", rather than using device's scan. */
7452 if (cfg->mod_params->disable_hw_scan) {
7453 IWL_DEBUG_INFO("Disabling hw_scan\n");
7454 iwl4965_hw_ops.hw_scan = NULL;
7457 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7463 /* At this point both hw and priv are allocated. */
7465 SET_IEEE80211_DEV(hw, &pdev->dev);
7467 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7469 priv->pci_dev = pdev;
7471 #ifdef CONFIG_IWLWIFI_DEBUG
7472 iwl_debug_level = priv->cfg->mod_params->debug;
7473 atomic_set(&priv->restrict_refcnt, 0);
7476 /**************************
7477 * 2. Initializing PCI bus
7478 **************************/
7479 if (pci_enable_device(pdev)) {
7481 goto out_ieee80211_free_hw;
7484 pci_set_master(pdev);
7486 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7488 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7490 printk(KERN_WARNING DRV_NAME
7491 ": No suitable DMA available.\n");
7492 goto out_pci_disable_device;
7495 err = pci_request_regions(pdev, DRV_NAME);
7497 goto out_pci_disable_device;
7499 pci_set_drvdata(pdev, priv);
7501 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7502 * PCI Tx retries from interfering with C3 CPU state */
7503 pci_write_config_byte(pdev, 0x41, 0x00);
7505 /***********************
7506 * 3. Read REV register
7507 ***********************/
7508 priv->hw_base = pci_iomap(pdev, 0, 0);
7509 if (!priv->hw_base) {
7511 goto out_pci_release_regions;
7514 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7515 (unsigned long long) pci_resource_len(pdev, 0));
7516 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7518 printk(KERN_INFO DRV_NAME
7519 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7525 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7526 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7528 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7529 err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7530 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7531 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7533 IWL_DEBUG_INFO("Failed to init the card\n");
7536 /* Read the EEPROM */
7537 err = iwl_eeprom_init(priv);
7539 IWL_ERROR("Unable to init EEPROM\n");
7542 /* MAC Address location in EEPROM same for 3945/4965 */
7543 iwl_eeprom_get_mac(priv, priv->mac_addr);
7544 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7545 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7547 /************************
7548 * 5. Setup HW constants
7549 ************************/
7550 /* Device-specific setup */
7551 if (priv->cfg->ops->lib->set_hw_params(priv)) {
7552 IWL_ERROR("failed to set hw parameters\n");
7556 /*******************
7558 *******************/
7560 err = iwl_setup(priv);
7562 goto out_unset_hw_params;
7563 /* At this point both hw and priv are initialized. */
7565 /**********************************
7566 * 7. Initialize module parameters
7567 **********************************/
7569 /* Disable radio (SW RF KILL) via parameter when loading driver */
7570 if (priv->cfg->mod_params->disable) {
7571 set_bit(STATUS_RF_KILL_SW, &priv->status);
7572 IWL_DEBUG_INFO("Radio disabled.\n");
7575 if (priv->cfg->mod_params->enable_qos)
7576 priv->qos_data.qos_enable = 1;
7578 /********************
7580 ********************/
7581 spin_lock_irqsave(&priv->lock, flags);
7582 iwl4965_disable_interrupts(priv);
7583 spin_unlock_irqrestore(&priv->lock, flags);
7585 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7587 IWL_ERROR("failed to create sysfs device attributes\n");
7588 goto out_unset_hw_params;
7591 err = iwl_dbgfs_register(priv, DRV_NAME);
7593 IWL_ERROR("failed to create debugfs files\n");
7594 goto out_remove_sysfs;
7597 iwl4965_setup_deferred_work(priv);
7598 iwl4965_setup_rx_handlers(priv);
7600 /********************
7602 ********************/
7603 pci_save_state(pdev);
7604 pci_disable_device(pdev);
7606 /* notify iwlcore to init */
7607 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
7611 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7612 out_unset_hw_params:
7613 iwl4965_unset_hw_params(priv);
7615 pci_iounmap(pdev, priv->hw_base);
7616 out_pci_release_regions:
7617 pci_release_regions(pdev);
7618 pci_set_drvdata(pdev, NULL);
7619 out_pci_disable_device:
7620 pci_disable_device(pdev);
7621 out_ieee80211_free_hw:
7622 ieee80211_free_hw(priv->hw);
7627 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
7629 struct iwl_priv *priv = pci_get_drvdata(pdev);
7630 struct list_head *p, *q;
7632 unsigned long flags;
7637 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7639 if (priv->mac80211_registered) {
7640 ieee80211_unregister_hw(priv->hw);
7641 priv->mac80211_registered = 0;
7644 set_bit(STATUS_EXIT_PENDING, &priv->status);
7648 /* make sure we flush any pending irq or
7649 * tasklet for the driver
7651 spin_lock_irqsave(&priv->lock, flags);
7652 iwl4965_disable_interrupts(priv);
7653 spin_unlock_irqrestore(&priv->lock, flags);
7655 iwl_synchronize_irq(priv);
7657 /* Free MAC hash list for ADHOC */
7658 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
7659 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
7661 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
7665 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
7666 iwl_dbgfs_unregister(priv);
7667 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7669 iwl4965_dealloc_ucode_pci(priv);
7672 iwl4965_rx_queue_free(priv, &priv->rxq);
7673 iwl4965_hw_txq_ctx_free(priv);
7675 iwl4965_unset_hw_params(priv);
7676 iwlcore_clear_stations_table(priv);
7679 /*netif_stop_queue(dev); */
7680 flush_workqueue(priv->workqueue);
7682 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7683 * priv->workqueue... so we can't take down the workqueue
7685 destroy_workqueue(priv->workqueue);
7686 priv->workqueue = NULL;
7688 pci_iounmap(pdev, priv->hw_base);
7689 pci_release_regions(pdev);
7690 pci_disable_device(pdev);
7691 pci_set_drvdata(pdev, NULL);
7693 iwl_free_channel_map(priv);
7694 iwl4965_free_geos(priv);
7696 if (priv->ibss_beacon)
7697 dev_kfree_skb(priv->ibss_beacon);
7699 ieee80211_free_hw(priv->hw);
7704 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7706 struct iwl_priv *priv = pci_get_drvdata(pdev);
7708 if (priv->is_open) {
7709 set_bit(STATUS_IN_SUSPEND, &priv->status);
7710 iwl4965_mac_stop(priv->hw);
7714 pci_set_power_state(pdev, PCI_D3hot);
7719 static int iwl4965_pci_resume(struct pci_dev *pdev)
7721 struct iwl_priv *priv = pci_get_drvdata(pdev);
7723 pci_set_power_state(pdev, PCI_D0);
7726 iwl4965_mac_start(priv->hw);
7728 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7732 #endif /* CONFIG_PM */
7734 /*****************************************************************************
7736 * driver and module entry point
7738 *****************************************************************************/
7740 /* Hardware specific file defines the PCI IDs table for that hardware module */
7741 static struct pci_device_id iwl_hw_card_ids[] = {
7742 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
7743 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
7746 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
7748 static struct pci_driver iwl_driver = {
7750 .id_table = iwl_hw_card_ids,
7751 .probe = iwl4965_pci_probe,
7752 .remove = __devexit_p(iwl4965_pci_remove),
7754 .suspend = iwl4965_pci_suspend,
7755 .resume = iwl4965_pci_resume,
7759 static int __init iwl4965_init(void)
7763 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7764 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7766 ret = iwl4965_rate_control_register();
7768 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
7772 ret = pci_register_driver(&iwl_driver);
7774 IWL_ERROR("Unable to initialize PCI module\n");
7775 goto error_register;
7777 #ifdef CONFIG_IWLWIFI_DEBUG
7778 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
7780 IWL_ERROR("Unable to create driver sysfs file\n");
7787 #ifdef CONFIG_IWLWIFI_DEBUG
7789 pci_unregister_driver(&iwl_driver);
7792 iwl4965_rate_control_unregister();
7796 static void __exit iwl4965_exit(void)
7798 #ifdef CONFIG_IWLWIFI_DEBUG
7799 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
7801 pci_unregister_driver(&iwl_driver);
7802 iwl4965_rate_control_unregister();
7805 module_exit(iwl4965_exit);
7806 module_init(iwl4965_init);