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"
55 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
56 struct iwl4965_tx_queue *txq);
58 /******************************************************************************
62 ******************************************************************************/
65 * module name, copyright, version, etc.
66 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
71 #ifdef CONFIG_IWLWIFI_DEBUG
77 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
83 #define DRV_VERSION IWLWIFI_VERSION VD VS
86 MODULE_DESCRIPTION(DRV_DESCRIPTION);
87 MODULE_VERSION(DRV_VERSION);
88 MODULE_AUTHOR(DRV_COPYRIGHT);
89 MODULE_LICENSE("GPL");
91 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
93 u16 fc = le16_to_cpu(hdr->frame_control);
94 int hdr_len = ieee80211_get_hdrlen(fc);
96 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
97 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
101 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
102 struct iwl_priv *priv, enum ieee80211_band band)
104 return priv->hw->wiphy->bands[band];
107 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
109 /* Single white space is for Linksys APs */
110 if (essid_len == 1 && essid[0] == ' ')
113 /* Otherwise, if the entire essid is 0, we assume it is hidden */
116 if (essid[essid_len] != '\0')
123 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
125 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
126 const char *s = essid;
129 if (iwl4965_is_empty_essid(essid, essid_len)) {
130 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
134 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
135 while (essid_len--) {
147 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
150 * Theory of operation
152 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
153 * of buffer descriptors, each of which points to one or more data buffers for
154 * the device to read from or fill. Driver and device exchange status of each
155 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
156 * entries in each circular buffer, to protect against confusing empty and full
159 * The device reads or writes the data in the queues via the device's several
160 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
162 * For Tx queue, there are low mark and high mark limits. If, after queuing
163 * the packet for Tx, free space become < low mark, Tx queue stopped. When
164 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
167 * The 4965 operates with up to 17 queues: One receive queue, one transmit
168 * queue (#4) for sending commands to the device firmware, and 15 other
169 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
171 * See more detailed info in iwl-4965-hw.h.
172 ***************************************************/
174 int iwl4965_queue_space(const struct iwl4965_queue *q)
176 int s = q->read_ptr - q->write_ptr;
178 if (q->read_ptr > q->write_ptr)
183 /* keep some reserve to not confuse empty and full situations */
191 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
193 return q->write_ptr > q->read_ptr ?
194 (i >= q->read_ptr && i < q->write_ptr) :
195 !(i < q->read_ptr && i >= q->write_ptr);
198 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
200 /* This is for scan command, the big buffer at end of command array */
202 return q->n_window; /* must be power of 2 */
204 /* Otherwise, use normal size buffers */
205 return index & (q->n_window - 1);
209 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
211 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
212 int count, int slots_num, u32 id)
215 q->n_window = slots_num;
218 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
219 * and iwl_queue_dec_wrap are broken. */
220 BUG_ON(!is_power_of_2(count));
222 /* slots_num must be power-of-two size, otherwise
223 * get_cmd_index is broken. */
224 BUG_ON(!is_power_of_2(slots_num));
226 q->low_mark = q->n_window / 4;
230 q->high_mark = q->n_window / 8;
231 if (q->high_mark < 2)
234 q->write_ptr = q->read_ptr = 0;
240 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
242 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
243 struct iwl4965_tx_queue *txq, u32 id)
245 struct pci_dev *dev = priv->pci_dev;
247 /* Driver private data, only for Tx (not command) queues,
248 * not shared with device. */
249 if (id != IWL_CMD_QUEUE_NUM) {
250 txq->txb = kmalloc(sizeof(txq->txb[0]) *
251 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
253 IWL_ERROR("kmalloc for auxiliary BD "
254 "structures failed\n");
260 /* Circular buffer of transmit frame descriptors (TFDs),
261 * shared with device */
262 txq->bd = pci_alloc_consistent(dev,
263 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
267 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
268 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
285 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
287 int iwl4965_tx_queue_init(struct iwl_priv *priv,
288 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
290 struct pci_dev *dev = priv->pci_dev;
295 * Alloc buffer array for commands (Tx or other types of commands).
296 * For the command queue (#4), allocate command space + one big
297 * command for scan, since scan command is very huge; the system will
298 * not have two scans at the same time, so only one is needed.
299 * For normal Tx queues (all other queues), no super-size command
302 len = sizeof(struct iwl_cmd) * slots_num;
303 if (txq_id == IWL_CMD_QUEUE_NUM)
304 len += IWL_MAX_SCAN_SIZE;
305 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
309 /* Alloc driver data array and TFD circular buffer */
310 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
312 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
316 txq->need_update = 0;
318 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
319 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
320 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
322 /* Initialize queue's high/low-water marks, and head/tail indexes */
323 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
325 /* Tell device where to find queue */
326 iwl4965_hw_tx_queue_init(priv, txq);
332 * iwl4965_tx_queue_free - Deallocate DMA queue.
333 * @txq: Transmit queue to deallocate.
335 * Empty queue by removing and destroying all BD's.
337 * 0-fill, but do not free "txq" descriptor structure.
339 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
341 struct iwl4965_queue *q = &txq->q;
342 struct pci_dev *dev = priv->pci_dev;
348 /* first, empty all BD's */
349 for (; q->write_ptr != q->read_ptr;
350 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
351 iwl4965_hw_txq_free_tfd(priv, txq);
353 len = sizeof(struct iwl_cmd) * q->n_window;
354 if (q->id == IWL_CMD_QUEUE_NUM)
355 len += IWL_MAX_SCAN_SIZE;
357 /* De-alloc array of command/tx buffers */
358 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
360 /* De-alloc circular buffer of TFDs */
362 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
363 txq->q.n_bd, txq->bd, txq->q.dma_addr);
365 /* De-alloc array of per-TFD driver data */
371 /* 0-fill queue descriptor structure */
372 memset(txq, 0, sizeof(*txq));
375 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
377 /*************** STATION TABLE MANAGEMENT ****
378 * mac80211 should be examined to determine if sta_info is duplicating
379 * the functionality provided here
382 /**************************************************************/
384 #if 0 /* temporary disable till we add real remove station */
386 * iwl4965_remove_station - Remove driver's knowledge of station.
388 * NOTE: This does not remove station from device's station table.
390 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
392 int index = IWL_INVALID_STATION;
396 spin_lock_irqsave(&priv->sta_lock, flags);
400 else if (is_broadcast_ether_addr(addr))
401 index = priv->hw_params.bcast_sta_id;
403 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
404 if (priv->stations[i].used &&
405 !compare_ether_addr(priv->stations[i].sta.sta.addr,
411 if (unlikely(index == IWL_INVALID_STATION))
414 if (priv->stations[index].used) {
415 priv->stations[index].used = 0;
416 priv->num_stations--;
419 BUG_ON(priv->num_stations < 0);
422 spin_unlock_irqrestore(&priv->sta_lock, flags);
428 * iwl4965_add_station_flags - Add station to tables in driver and device
430 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
431 int is_ap, u8 flags, void *ht_data)
434 int index = IWL_INVALID_STATION;
435 struct iwl4965_station_entry *station;
436 unsigned long flags_spin;
437 DECLARE_MAC_BUF(mac);
439 spin_lock_irqsave(&priv->sta_lock, flags_spin);
442 else if (is_broadcast_ether_addr(addr))
443 index = priv->hw_params.bcast_sta_id;
445 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
446 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
452 if (!priv->stations[i].used &&
453 index == IWL_INVALID_STATION)
458 /* These two conditions have the same outcome, but keep them separate
459 since they have different meanings */
460 if (unlikely(index == IWL_INVALID_STATION)) {
461 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
465 if (priv->stations[index].used &&
466 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
467 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
472 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
473 station = &priv->stations[index];
475 priv->num_stations++;
477 /* Set up the REPLY_ADD_STA command to send to device */
478 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
479 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
480 station->sta.mode = 0;
481 station->sta.sta.sta_id = index;
482 station->sta.station_flags = 0;
484 #ifdef CONFIG_IWL4965_HT
485 /* BCAST station and IBSS stations do not work in HT mode */
486 if (index != priv->hw_params.bcast_sta_id &&
487 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
488 iwl4965_set_ht_add_station(priv, index,
489 (struct ieee80211_ht_info *) ht_data);
490 #endif /*CONFIG_IWL4965_HT*/
492 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
494 /* Add station to device's station table */
495 iwl4965_send_add_station(priv, &station->sta, flags);
502 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
505 * iwl4965_enqueue_hcmd - enqueue a uCode command
506 * @priv: device private data point
507 * @cmd: a point to the ucode command structure
509 * The function returns < 0 values to indicate the operation is
510 * failed. On success, it turns the index (> 0) of command in the
513 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
515 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
516 struct iwl4965_queue *q = &txq->q;
517 struct iwl4965_tfd_frame *tfd;
519 struct iwl_cmd *out_cmd;
521 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
522 dma_addr_t phys_addr;
526 /* If any of the command structures end up being larger than
527 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
528 * we will need to increase the size of the TFD entries */
529 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
530 !(cmd->meta.flags & CMD_SIZE_HUGE));
532 if (iwl_is_rfkill(priv)) {
533 IWL_DEBUG_INFO("Not sending command - RF KILL");
537 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
538 IWL_ERROR("No space for Tx\n");
542 spin_lock_irqsave(&priv->hcmd_lock, flags);
544 tfd = &txq->bd[q->write_ptr];
545 memset(tfd, 0, sizeof(*tfd));
547 control_flags = (u32 *) tfd;
549 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
550 out_cmd = &txq->cmd[idx];
552 out_cmd->hdr.cmd = cmd->id;
553 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
554 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
556 /* At this point, the out_cmd now has all of the incoming cmd
559 out_cmd->hdr.flags = 0;
560 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
561 INDEX_TO_SEQ(q->write_ptr));
562 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
563 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
565 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
566 offsetof(struct iwl_cmd, hdr);
567 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
569 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
570 "%d bytes at %d[%d]:%d\n",
571 get_cmd_string(out_cmd->hdr.cmd),
572 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
573 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
575 txq->need_update = 1;
577 /* Set up entry in queue's byte count circular buffer */
578 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
580 /* Increment and update queue's write index */
581 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
582 ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
584 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
585 return ret ? ret : idx;
588 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
590 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
593 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
595 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
600 * iwl4965_rxon_add_station - add station into station table.
602 * there is only one AP station with id= IWL_AP_ID
603 * NOTE: mutex must be held before calling this fnction
605 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
606 const u8 *addr, int is_ap)
610 /* Add station to device's station table */
611 #ifdef CONFIG_IWL4965_HT
612 struct ieee80211_conf *conf = &priv->hw->conf;
613 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
616 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
617 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
618 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
621 #endif /* CONFIG_IWL4965_HT */
622 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
625 /* Set up default rate scaling table in device's station table */
626 iwl4965_add_station(priv, addr, is_ap);
632 * iwl4965_check_rxon_cmd - validate RXON structure is valid
634 * NOTE: This is really only useful during development and can eventually
635 * be #ifdef'd out once the driver is stable and folks aren't actively
638 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
643 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
644 error |= le32_to_cpu(rxon->flags &
645 (RXON_FLG_TGJ_NARROW_BAND_MSK |
646 RXON_FLG_RADAR_DETECT_MSK));
648 IWL_WARNING("check 24G fields %d | %d\n",
651 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
652 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
654 IWL_WARNING("check 52 fields %d | %d\n",
656 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
658 IWL_WARNING("check 52 CCK %d | %d\n",
661 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
663 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
665 /* make sure basic rates 6Mbps and 1Mbps are supported */
666 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
667 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
669 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
671 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
673 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
675 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
676 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
678 IWL_WARNING("check CCK and short slot %d | %d\n",
681 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
682 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
684 IWL_WARNING("check CCK & auto detect %d | %d\n",
687 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
688 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
690 IWL_WARNING("check TGG and auto detect %d | %d\n",
694 IWL_WARNING("Tuning to channel %d\n",
695 le16_to_cpu(rxon->channel));
698 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
705 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
706 * @priv: staging_rxon is compared to active_rxon
708 * If the RXON structure is changing enough to require a new tune,
709 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
710 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
712 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
715 /* These items are only settable from the full RXON command */
716 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
717 compare_ether_addr(priv->staging_rxon.bssid_addr,
718 priv->active_rxon.bssid_addr) ||
719 compare_ether_addr(priv->staging_rxon.node_addr,
720 priv->active_rxon.node_addr) ||
721 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
722 priv->active_rxon.wlap_bssid_addr) ||
723 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
724 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
725 (priv->staging_rxon.air_propagation !=
726 priv->active_rxon.air_propagation) ||
727 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
728 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
729 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
730 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
731 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
732 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
735 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
736 * be updated with the RXON_ASSOC command -- however only some
737 * flag transitions are allowed using RXON_ASSOC */
739 /* Check if we are not switching bands */
740 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
741 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
744 /* Check if we are switching association toggle */
745 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
746 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
753 * iwl4965_commit_rxon - commit staging_rxon to hardware
755 * The RXON command in staging_rxon is committed to the hardware and
756 * the active_rxon structure is updated with the new data. This
757 * function correctly transitions out of the RXON_ASSOC_MSK state if
758 * a HW tune is required based on the RXON structure changes.
760 static int iwl4965_commit_rxon(struct iwl_priv *priv)
762 /* cast away the const for active_rxon in this function */
763 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
764 DECLARE_MAC_BUF(mac);
767 if (!iwl_is_alive(priv))
770 /* always get timestamp with Rx frame */
771 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
773 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
775 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
779 /* If we don't need to send a full RXON, we can use
780 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
781 * and other flags for the current radio configuration. */
782 if (!iwl4965_full_rxon_required(priv)) {
783 rc = iwl_send_rxon_assoc(priv);
785 IWL_ERROR("Error setting RXON_ASSOC "
786 "configuration (%d).\n", rc);
790 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
795 /* station table will be cleared */
796 priv->assoc_station_added = 0;
798 #ifdef CONFIG_IWL4965_SENSITIVITY
799 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
800 if (!priv->error_recovering)
801 priv->start_calib = 0;
803 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
804 #endif /* CONFIG_IWL4965_SENSITIVITY */
806 /* If we are currently associated and the new config requires
807 * an RXON_ASSOC and the new config wants the associated mask enabled,
808 * we must clear the associated from the active configuration
809 * before we apply the new config */
810 if (iwl_is_associated(priv) &&
811 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
812 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
813 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
815 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
816 sizeof(struct iwl4965_rxon_cmd),
819 /* If the mask clearing failed then we set
820 * active_rxon back to what it was previously */
822 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
823 IWL_ERROR("Error clearing ASSOC_MSK on current "
824 "configuration (%d).\n", rc);
829 IWL_DEBUG_INFO("Sending RXON\n"
830 "* with%s RXON_FILTER_ASSOC_MSK\n"
833 ((priv->staging_rxon.filter_flags &
834 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
835 le16_to_cpu(priv->staging_rxon.channel),
836 print_mac(mac, priv->staging_rxon.bssid_addr));
838 iwl4965_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
839 /* Apply the new configuration */
840 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
841 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
843 IWL_ERROR("Error setting new configuration (%d).\n", rc);
847 iwlcore_clear_stations_table(priv);
849 #ifdef CONFIG_IWL4965_SENSITIVITY
850 if (!priv->error_recovering)
851 priv->start_calib = 0;
853 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
854 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
855 #endif /* CONFIG_IWL4965_SENSITIVITY */
857 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
859 /* If we issue a new RXON command which required a tune then we must
860 * send a new TXPOWER command or we won't be able to Tx any frames */
861 rc = iwl4965_hw_reg_send_txpower(priv);
863 IWL_ERROR("Error setting Tx power (%d).\n", rc);
867 /* Add the broadcast address so we can send broadcast frames */
868 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
869 IWL_INVALID_STATION) {
870 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
874 /* If we have set the ASSOC_MSK and we are in BSS mode then
875 * add the IWL_AP_ID to the station rate table */
876 if (iwl_is_associated(priv) &&
877 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
878 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
879 == IWL_INVALID_STATION) {
880 IWL_ERROR("Error adding AP address for transmit.\n");
883 priv->assoc_station_added = 1;
884 if (priv->default_wep_key &&
885 iwl_send_static_wepkey_cmd(priv, 0))
886 IWL_ERROR("Could not send WEP static key.\n");
892 static int iwl4965_send_bt_config(struct iwl_priv *priv)
894 struct iwl4965_bt_cmd bt_cmd = {
902 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
903 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
906 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
909 struct iwl4965_rx_packet *res;
910 struct iwl_host_cmd cmd = {
911 .id = REPLY_SCAN_ABORT_CMD,
912 .meta.flags = CMD_WANT_SKB,
915 /* If there isn't a scan actively going on in the hardware
916 * then we are in between scan bands and not actually
917 * actively scanning, so don't send the abort command */
918 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
919 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
923 rc = iwl_send_cmd_sync(priv, &cmd);
925 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
929 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
930 if (res->u.status != CAN_ABORT_STATUS) {
931 /* The scan abort will return 1 for success or
932 * 2 for "failure". A failure condition can be
933 * due to simply not being in an active scan which
934 * can occur if we send the scan abort before we
935 * the microcode has notified us that a scan is
937 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
938 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
939 clear_bit(STATUS_SCAN_HW, &priv->status);
942 dev_kfree_skb_any(cmd.meta.u.skb);
947 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
957 * Use: Sets the device's internal card state to enable, disable, or halt
959 * When in the 'enable' state the card operates as normal.
960 * When in the 'disable' state, the card enters into a low power mode.
961 * When in the 'halt' state, the card is shut down and must be fully
962 * restarted to come back on.
964 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
966 struct iwl_host_cmd cmd = {
967 .id = REPLY_CARD_STATE_CMD,
970 .meta.flags = meta_flag,
973 if (meta_flag & CMD_ASYNC)
974 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
976 return iwl_send_cmd(priv, &cmd);
979 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
980 struct iwl_cmd *cmd, struct sk_buff *skb)
982 struct iwl4965_rx_packet *res = NULL;
985 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
989 res = (struct iwl4965_rx_packet *)skb->data;
990 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
991 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
996 switch (res->u.add_sta.status) {
997 case ADD_STA_SUCCESS_MSK:
1003 /* We didn't cache the SKB; let the caller free it */
1007 int iwl4965_send_add_station(struct iwl_priv *priv,
1008 struct iwl4965_addsta_cmd *sta, u8 flags)
1010 struct iwl4965_rx_packet *res = NULL;
1012 struct iwl_host_cmd cmd = {
1013 .id = REPLY_ADD_STA,
1014 .len = sizeof(struct iwl4965_addsta_cmd),
1015 .meta.flags = flags,
1019 if (flags & CMD_ASYNC)
1020 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1022 cmd.meta.flags |= CMD_WANT_SKB;
1024 rc = iwl_send_cmd(priv, &cmd);
1026 if (rc || (flags & CMD_ASYNC))
1029 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1030 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1031 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1037 switch (res->u.add_sta.status) {
1038 case ADD_STA_SUCCESS_MSK:
1039 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1043 IWL_WARNING("REPLY_ADD_STA failed\n");
1048 priv->alloc_rxb_skb--;
1049 dev_kfree_skb_any(cmd.meta.u.skb);
1054 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1056 struct list_head *element;
1058 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1059 priv->frames_count);
1061 while (!list_empty(&priv->free_frames)) {
1062 element = priv->free_frames.next;
1064 kfree(list_entry(element, struct iwl4965_frame, list));
1065 priv->frames_count--;
1068 if (priv->frames_count) {
1069 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1070 priv->frames_count);
1071 priv->frames_count = 0;
1075 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1077 struct iwl4965_frame *frame;
1078 struct list_head *element;
1079 if (list_empty(&priv->free_frames)) {
1080 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1082 IWL_ERROR("Could not allocate frame!\n");
1086 priv->frames_count++;
1090 element = priv->free_frames.next;
1092 return list_entry(element, struct iwl4965_frame, list);
1095 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1097 memset(frame, 0, sizeof(*frame));
1098 list_add(&frame->list, &priv->free_frames);
1101 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1102 struct ieee80211_hdr *hdr,
1103 const u8 *dest, int left)
1106 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1107 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1108 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1111 if (priv->ibss_beacon->len > left)
1114 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1116 return priv->ibss_beacon->len;
1119 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1123 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1124 i = iwl4965_rates[i].next_ieee) {
1125 if (rate_mask & (1 << i))
1126 return iwl4965_rates[i].plcp;
1129 return IWL_RATE_INVALID;
1132 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1134 struct iwl4965_frame *frame;
1135 unsigned int frame_size;
1139 frame = iwl4965_get_free_frame(priv);
1142 IWL_ERROR("Could not obtain free frame buffer for beacon "
1147 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1148 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1150 if (rate == IWL_INVALID_RATE)
1151 rate = IWL_RATE_6M_PLCP;
1153 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1154 if (rate == IWL_INVALID_RATE)
1155 rate = IWL_RATE_1M_PLCP;
1158 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1160 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1163 iwl4965_free_frame(priv, frame);
1168 /******************************************************************************
1170 * Misc. internal state and helper functions
1172 ******************************************************************************/
1174 static void iwl4965_unset_hw_params(struct iwl_priv *priv)
1176 if (priv->shared_virt)
1177 pci_free_consistent(priv->pci_dev,
1178 sizeof(struct iwl4965_shared),
1184 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1186 * return : set the bit for each supported rate insert in ie
1188 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1189 u16 basic_rate, int *left)
1191 u16 ret_rates = 0, bit;
1196 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1197 if (bit & supported_rate) {
1199 rates[*cnt] = iwl4965_rates[i].ieee |
1200 ((bit & basic_rate) ? 0x80 : 0x00);
1204 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1213 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1215 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1216 enum ieee80211_band band,
1217 struct ieee80211_mgmt *frame,
1218 int left, int is_direct)
1222 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1223 #ifdef CONFIG_IWL4965_HT
1224 const struct ieee80211_supported_band *sband =
1225 iwl4965_get_hw_mode(priv, band);
1226 #endif /* CONFIG_IWL4965_HT */
1228 /* Make sure there is enough space for the probe request,
1229 * two mandatory IEs and the data */
1235 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1236 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1237 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1238 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1239 frame->seq_ctrl = 0;
1241 /* fill in our indirect SSID IE */
1248 pos = &(frame->u.probe_req.variable[0]);
1249 *pos++ = WLAN_EID_SSID;
1252 /* fill in our direct SSID IE... */
1255 left -= 2 + priv->essid_len;
1258 /* ... fill it in... */
1259 *pos++ = WLAN_EID_SSID;
1260 *pos++ = priv->essid_len;
1261 memcpy(pos, priv->essid, priv->essid_len);
1262 pos += priv->essid_len;
1263 len += 2 + priv->essid_len;
1266 /* fill in supported rate */
1272 /* ... fill it in... */
1273 *pos++ = WLAN_EID_SUPP_RATES;
1276 /* exclude 60M rate */
1277 active_rates = priv->rates_mask;
1278 active_rates &= ~IWL_RATE_60M_MASK;
1280 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1282 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1283 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1284 active_rate_basic, &left);
1285 active_rates &= ~ret_rates;
1287 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1288 active_rate_basic, &left);
1289 active_rates &= ~ret_rates;
1293 if (active_rates == 0)
1296 /* fill in supported extended rate */
1301 /* ... fill it in... */
1302 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1304 iwl4965_supported_rate_to_ie(pos, active_rates,
1305 active_rate_basic, &left);
1309 #ifdef CONFIG_IWL4965_HT
1310 if (sband && sband->ht_info.ht_supported) {
1311 struct ieee80211_ht_cap *ht_cap;
1313 *pos++ = WLAN_EID_HT_CAPABILITY;
1314 *pos++ = sizeof(struct ieee80211_ht_cap);
1315 ht_cap = (struct ieee80211_ht_cap *)pos;
1316 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1317 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1318 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1319 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1320 ((sband->ht_info.ampdu_density << 2) &
1321 IEEE80211_HT_CAP_AMPDU_DENSITY);
1322 len += 2 + sizeof(struct ieee80211_ht_cap);
1324 #endif /*CONFIG_IWL4965_HT */
1333 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1334 struct iwl4965_qosparam_cmd *qos)
1337 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1338 sizeof(struct iwl4965_qosparam_cmd), qos);
1341 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1343 unsigned long flags;
1345 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1348 if (!priv->qos_data.qos_enable)
1351 spin_lock_irqsave(&priv->lock, flags);
1352 priv->qos_data.def_qos_parm.qos_flags = 0;
1354 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1355 !priv->qos_data.qos_cap.q_AP.txop_request)
1356 priv->qos_data.def_qos_parm.qos_flags |=
1357 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1358 if (priv->qos_data.qos_active)
1359 priv->qos_data.def_qos_parm.qos_flags |=
1360 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1362 #ifdef CONFIG_IWL4965_HT
1363 if (priv->current_ht_config.is_ht)
1364 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1365 #endif /* CONFIG_IWL4965_HT */
1367 spin_unlock_irqrestore(&priv->lock, flags);
1369 if (force || iwl_is_associated(priv)) {
1370 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1371 priv->qos_data.qos_active,
1372 priv->qos_data.def_qos_parm.qos_flags);
1374 iwl4965_send_qos_params_command(priv,
1375 &(priv->qos_data.def_qos_parm));
1380 * Power management (not Tx power!) functions
1382 #define MSEC_TO_USEC 1024
1384 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1385 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1386 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1387 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1388 __constant_cpu_to_le32(X1), \
1389 __constant_cpu_to_le32(X2), \
1390 __constant_cpu_to_le32(X3), \
1391 __constant_cpu_to_le32(X4)}
1394 /* default power management (not Tx power) table values */
1396 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1397 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1398 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1399 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1400 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1401 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1402 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1406 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1407 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1408 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1409 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1410 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1411 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1412 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1413 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1414 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1415 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1416 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1419 int iwl4965_power_init_handle(struct iwl_priv *priv)
1422 struct iwl4965_power_mgr *pow_data;
1423 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1426 IWL_DEBUG_POWER("Initialize power \n");
1428 pow_data = &(priv->power_data);
1430 memset(pow_data, 0, sizeof(*pow_data));
1432 pow_data->active_index = IWL_POWER_RANGE_0;
1433 pow_data->dtim_val = 0xffff;
1435 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1436 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1438 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1442 struct iwl4965_powertable_cmd *cmd;
1444 IWL_DEBUG_POWER("adjust power command flags\n");
1446 for (i = 0; i < IWL_POWER_AC; i++) {
1447 cmd = &pow_data->pwr_range_0[i].cmd;
1450 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1452 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1458 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1459 struct iwl4965_powertable_cmd *cmd, u32 mode)
1464 struct iwl4965_power_vec_entry *range;
1466 struct iwl4965_power_mgr *pow_data;
1468 if (mode > IWL_POWER_INDEX_5) {
1469 IWL_DEBUG_POWER("Error invalid power mode \n");
1472 pow_data = &(priv->power_data);
1474 if (pow_data->active_index == IWL_POWER_RANGE_0)
1475 range = &pow_data->pwr_range_0[0];
1477 range = &pow_data->pwr_range_1[1];
1479 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1481 #ifdef IWL_MAC80211_DISABLE
1482 if (priv->assoc_network != NULL) {
1483 unsigned long flags;
1485 period = priv->assoc_network->tim.tim_period;
1487 #endif /*IWL_MAC80211_DISABLE */
1488 skip = range[mode].no_dtim;
1497 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1499 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1500 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1501 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1504 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1505 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1506 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1509 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1510 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1511 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1512 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1513 le32_to_cpu(cmd->sleep_interval[0]),
1514 le32_to_cpu(cmd->sleep_interval[1]),
1515 le32_to_cpu(cmd->sleep_interval[2]),
1516 le32_to_cpu(cmd->sleep_interval[3]),
1517 le32_to_cpu(cmd->sleep_interval[4]));
1522 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1524 u32 uninitialized_var(final_mode);
1526 struct iwl4965_powertable_cmd cmd;
1528 /* If on battery, set to 3,
1529 * if plugged into AC power, set to CAM ("continuously aware mode"),
1530 * else user level */
1532 case IWL_POWER_BATTERY:
1533 final_mode = IWL_POWER_INDEX_3;
1536 final_mode = IWL_POWER_MODE_CAM;
1543 cmd.keep_alive_beacons = 0;
1545 iwl4965_update_power_cmd(priv, &cmd, final_mode);
1547 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1549 if (final_mode == IWL_POWER_MODE_CAM)
1550 clear_bit(STATUS_POWER_PMI, &priv->status);
1552 set_bit(STATUS_POWER_PMI, &priv->status);
1557 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1559 /* Filter incoming packets to determine if they are targeted toward
1560 * this network, discarding packets coming from ourselves */
1561 switch (priv->iw_mode) {
1562 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
1563 /* packets from our adapter are dropped (echo) */
1564 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1566 /* {broad,multi}cast packets to our IBSS go through */
1567 if (is_multicast_ether_addr(header->addr1))
1568 return !compare_ether_addr(header->addr3, priv->bssid);
1569 /* packets to our adapter go through */
1570 return !compare_ether_addr(header->addr1, priv->mac_addr);
1571 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1572 /* packets from our adapter are dropped (echo) */
1573 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1575 /* {broad,multi}cast packets to our BSS go through */
1576 if (is_multicast_ether_addr(header->addr1))
1577 return !compare_ether_addr(header->addr2, priv->bssid);
1578 /* packets to our adapter go through */
1579 return !compare_ether_addr(header->addr1, priv->mac_addr);
1587 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1589 static const char *iwl4965_get_tx_fail_reason(u32 status)
1591 switch (status & TX_STATUS_MSK) {
1592 case TX_STATUS_SUCCESS:
1594 TX_STATUS_ENTRY(SHORT_LIMIT);
1595 TX_STATUS_ENTRY(LONG_LIMIT);
1596 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1597 TX_STATUS_ENTRY(MGMNT_ABORT);
1598 TX_STATUS_ENTRY(NEXT_FRAG);
1599 TX_STATUS_ENTRY(LIFE_EXPIRE);
1600 TX_STATUS_ENTRY(DEST_PS);
1601 TX_STATUS_ENTRY(ABORTED);
1602 TX_STATUS_ENTRY(BT_RETRY);
1603 TX_STATUS_ENTRY(STA_INVALID);
1604 TX_STATUS_ENTRY(FRAG_DROPPED);
1605 TX_STATUS_ENTRY(TID_DISABLE);
1606 TX_STATUS_ENTRY(FRAME_FLUSHED);
1607 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1608 TX_STATUS_ENTRY(TX_LOCKED);
1609 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1616 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1618 * NOTE: priv->mutex is not required before calling this function
1620 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1622 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1623 clear_bit(STATUS_SCANNING, &priv->status);
1627 if (test_bit(STATUS_SCANNING, &priv->status)) {
1628 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1629 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1630 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1631 queue_work(priv->workqueue, &priv->abort_scan);
1634 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1636 return test_bit(STATUS_SCANNING, &priv->status);
1643 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1644 * @ms: amount of time to wait (in milliseconds) for scan to abort
1646 * NOTE: priv->mutex must be held before calling this function
1648 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1650 unsigned long now = jiffies;
1653 ret = iwl4965_scan_cancel(priv);
1655 mutex_unlock(&priv->mutex);
1656 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1657 test_bit(STATUS_SCANNING, &priv->status))
1659 mutex_lock(&priv->mutex);
1661 return test_bit(STATUS_SCANNING, &priv->status);
1667 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1669 /* Reset ieee stats */
1671 /* We don't reset the net_device_stats (ieee->stats) on
1674 priv->last_seq_num = -1;
1675 priv->last_frag_num = -1;
1676 priv->last_packet_time = 0;
1678 iwl4965_scan_cancel(priv);
1681 #define MAX_UCODE_BEACON_INTERVAL 4096
1682 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1684 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1687 u16 beacon_factor = 0;
1690 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1691 / MAX_UCODE_BEACON_INTERVAL;
1692 new_val = beacon_val / beacon_factor;
1694 return cpu_to_le16(new_val);
1697 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1699 u64 interval_tm_unit;
1701 unsigned long flags;
1702 struct ieee80211_conf *conf = NULL;
1705 conf = ieee80211_get_hw_conf(priv->hw);
1707 spin_lock_irqsave(&priv->lock, flags);
1708 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1709 priv->rxon_timing.timestamp.dw[0] =
1710 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1712 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1714 tsf = priv->timestamp;
1716 beacon_int = priv->beacon_int;
1717 spin_unlock_irqrestore(&priv->lock, flags);
1719 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1720 if (beacon_int == 0) {
1721 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1722 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1724 priv->rxon_timing.beacon_interval =
1725 cpu_to_le16(beacon_int);
1726 priv->rxon_timing.beacon_interval =
1727 iwl4965_adjust_beacon_interval(
1728 le16_to_cpu(priv->rxon_timing.beacon_interval));
1731 priv->rxon_timing.atim_window = 0;
1733 priv->rxon_timing.beacon_interval =
1734 iwl4965_adjust_beacon_interval(conf->beacon_int);
1735 /* TODO: we need to get atim_window from upper stack
1736 * for now we set to 0 */
1737 priv->rxon_timing.atim_window = 0;
1741 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1742 result = do_div(tsf, interval_tm_unit);
1743 priv->rxon_timing.beacon_init_val =
1744 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1747 ("beacon interval %d beacon timer %d beacon tim %d\n",
1748 le16_to_cpu(priv->rxon_timing.beacon_interval),
1749 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1750 le16_to_cpu(priv->rxon_timing.atim_window));
1753 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1755 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1756 IWL_ERROR("APs don't scan.\n");
1760 if (!iwl_is_ready_rf(priv)) {
1761 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1765 if (test_bit(STATUS_SCANNING, &priv->status)) {
1766 IWL_DEBUG_SCAN("Scan already in progress.\n");
1770 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1771 IWL_DEBUG_SCAN("Scan request while abort pending. "
1776 IWL_DEBUG_INFO("Starting scan...\n");
1777 if (priv->cfg->sku & IWL_SKU_G)
1778 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1779 if (priv->cfg->sku & IWL_SKU_A)
1780 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1781 set_bit(STATUS_SCANNING, &priv->status);
1782 priv->scan_start = jiffies;
1783 priv->scan_pass_start = priv->scan_start;
1785 queue_work(priv->workqueue, &priv->request_scan);
1791 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1792 enum ieee80211_band band)
1794 if (band == IEEE80211_BAND_5GHZ) {
1795 priv->staging_rxon.flags &=
1796 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1797 | RXON_FLG_CCK_MSK);
1798 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1800 /* Copied from iwl4965_post_associate() */
1801 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1802 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1804 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1806 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1807 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1809 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1810 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1811 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1816 * initialize rxon structure with default values from eeprom
1818 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1820 const struct iwl_channel_info *ch_info;
1822 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1824 switch (priv->iw_mode) {
1825 case IEEE80211_IF_TYPE_AP:
1826 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1829 case IEEE80211_IF_TYPE_STA:
1830 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1831 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1834 case IEEE80211_IF_TYPE_IBSS:
1835 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1836 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1837 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1838 RXON_FILTER_ACCEPT_GRP_MSK;
1841 case IEEE80211_IF_TYPE_MNTR:
1842 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1843 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1844 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1847 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1852 /* TODO: Figure out when short_preamble would be set and cache from
1854 if (!hw_to_local(priv->hw)->short_preamble)
1855 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1857 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1860 ch_info = iwl_get_channel_info(priv, priv->band,
1861 le16_to_cpu(priv->staging_rxon.channel));
1864 ch_info = &priv->channel_info[0];
1867 * in some case A channels are all non IBSS
1868 * in this case force B/G channel
1870 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1871 !(is_channel_ibss(ch_info)))
1872 ch_info = &priv->channel_info[0];
1874 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1875 priv->band = ch_info->band;
1877 iwl4965_set_flags_for_phymode(priv, priv->band);
1879 priv->staging_rxon.ofdm_basic_rates =
1880 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1881 priv->staging_rxon.cck_basic_rates =
1882 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1884 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1885 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1886 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1887 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1888 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1889 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1890 iwl4965_set_rxon_chain(priv);
1893 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1895 if (mode == IEEE80211_IF_TYPE_IBSS) {
1896 const struct iwl_channel_info *ch_info;
1898 ch_info = iwl_get_channel_info(priv,
1900 le16_to_cpu(priv->staging_rxon.channel));
1902 if (!ch_info || !is_channel_ibss(ch_info)) {
1903 IWL_ERROR("channel %d not IBSS channel\n",
1904 le16_to_cpu(priv->staging_rxon.channel));
1909 priv->iw_mode = mode;
1911 iwl4965_connection_init_rx_config(priv);
1912 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1914 iwlcore_clear_stations_table(priv);
1916 /* dont commit rxon if rf-kill is on*/
1917 if (!iwl_is_ready_rf(priv))
1920 cancel_delayed_work(&priv->scan_check);
1921 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1922 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1923 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1927 iwl4965_commit_rxon(priv);
1932 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1933 struct ieee80211_tx_control *ctl,
1934 struct iwl_cmd *cmd,
1935 struct sk_buff *skb_frag,
1938 struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1939 struct iwl_wep_key *wepkey;
1942 BUG_ON(ctl->key_idx > 3);
1944 switch (keyinfo->alg) {
1946 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1947 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1948 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1949 cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1950 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1954 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1955 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1956 IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
1957 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1961 wepkey = &priv->wep_keys[ctl->key_idx];
1962 cmd->cmd.tx.sec_ctl = 0;
1963 if (priv->default_wep_key) {
1964 /* the WEP key was sent as static */
1965 keyidx = ctl->key_idx;
1966 memcpy(&cmd->cmd.tx.key[3], wepkey->key,
1968 if (wepkey->key_size == WEP_KEY_LEN_128)
1969 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1971 /* the WEP key was sent as dynamic */
1972 keyidx = keyinfo->keyidx;
1973 memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
1975 if (keyinfo->keylen == WEP_KEY_LEN_128)
1976 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
1979 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
1980 (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
1982 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1983 "with key %d\n", keyidx);
1987 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
1993 * handle build REPLY_TX command notification.
1995 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
1996 struct iwl_cmd *cmd,
1997 struct ieee80211_tx_control *ctrl,
1998 struct ieee80211_hdr *hdr,
1999 int is_unicast, u8 std_id)
2002 u16 fc = le16_to_cpu(hdr->frame_control);
2003 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2005 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2006 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2007 tx_flags |= TX_CMD_FLG_ACK_MSK;
2008 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2009 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2010 if (ieee80211_is_probe_response(fc) &&
2011 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2012 tx_flags |= TX_CMD_FLG_TSF_MSK;
2014 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2015 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2018 if (ieee80211_is_back_request(fc))
2019 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2022 cmd->cmd.tx.sta_id = std_id;
2023 if (ieee80211_get_morefrag(hdr))
2024 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2026 qc = ieee80211_get_qos_ctrl(hdr);
2028 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2029 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2031 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2033 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2034 tx_flags |= TX_CMD_FLG_RTS_MSK;
2035 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2036 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2037 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2038 tx_flags |= TX_CMD_FLG_CTS_MSK;
2041 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2042 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2044 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2045 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2046 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2047 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2048 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2050 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2052 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2055 cmd->cmd.tx.driver_txop = 0;
2056 cmd->cmd.tx.tx_flags = tx_flags;
2057 cmd->cmd.tx.next_frame_len = 0;
2059 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2061 /* 0 - mgmt, 1 - cnt, 2 - data */
2062 int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2063 priv->tx_stats[idx].cnt++;
2064 priv->tx_stats[idx].bytes += len;
2067 * iwl4965_get_sta_id - Find station's index within station table
2069 * If new IBSS station, create new entry in station table
2071 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2072 struct ieee80211_hdr *hdr)
2075 u16 fc = le16_to_cpu(hdr->frame_control);
2076 DECLARE_MAC_BUF(mac);
2078 /* If this frame is broadcast or management, use broadcast station id */
2079 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2080 is_multicast_ether_addr(hdr->addr1))
2081 return priv->hw_params.bcast_sta_id;
2083 switch (priv->iw_mode) {
2085 /* If we are a client station in a BSS network, use the special
2086 * AP station entry (that's the only station we communicate with) */
2087 case IEEE80211_IF_TYPE_STA:
2090 /* If we are an AP, then find the station, or use BCAST */
2091 case IEEE80211_IF_TYPE_AP:
2092 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2093 if (sta_id != IWL_INVALID_STATION)
2095 return priv->hw_params.bcast_sta_id;
2097 /* If this frame is going out to an IBSS network, find the station,
2098 * or create a new station table entry */
2099 case IEEE80211_IF_TYPE_IBSS:
2100 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2101 if (sta_id != IWL_INVALID_STATION)
2104 /* Create new station table entry */
2105 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2106 0, CMD_ASYNC, NULL);
2108 if (sta_id != IWL_INVALID_STATION)
2111 IWL_DEBUG_DROP("Station %s not in station map. "
2112 "Defaulting to broadcast...\n",
2113 print_mac(mac, hdr->addr1));
2114 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2115 return priv->hw_params.bcast_sta_id;
2118 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2119 return priv->hw_params.bcast_sta_id;
2124 * start REPLY_TX command process
2126 static int iwl4965_tx_skb(struct iwl_priv *priv,
2127 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2129 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2130 struct iwl4965_tfd_frame *tfd;
2132 int txq_id = ctl->queue;
2133 struct iwl4965_tx_queue *txq = NULL;
2134 struct iwl4965_queue *q = NULL;
2135 dma_addr_t phys_addr;
2136 dma_addr_t txcmd_phys;
2137 dma_addr_t scratch_phys;
2138 struct iwl_cmd *out_cmd = NULL;
2139 u16 len, idx, len_org;
2140 u8 id, hdr_len, unicast;
2145 u8 wait_write_ptr = 0;
2146 unsigned long flags;
2149 spin_lock_irqsave(&priv->lock, flags);
2150 if (iwl_is_rfkill(priv)) {
2151 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2156 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2160 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2161 IWL_ERROR("ERROR: No TX rate available.\n");
2165 unicast = !is_multicast_ether_addr(hdr->addr1);
2168 fc = le16_to_cpu(hdr->frame_control);
2170 #ifdef CONFIG_IWLWIFI_DEBUG
2171 if (ieee80211_is_auth(fc))
2172 IWL_DEBUG_TX("Sending AUTH frame\n");
2173 else if (ieee80211_is_assoc_request(fc))
2174 IWL_DEBUG_TX("Sending ASSOC frame\n");
2175 else if (ieee80211_is_reassoc_request(fc))
2176 IWL_DEBUG_TX("Sending REASSOC frame\n");
2179 /* drop all data frame if we are not associated */
2180 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2181 (!iwl_is_associated(priv) ||
2182 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2183 !priv->assoc_station_added)) {
2184 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2188 spin_unlock_irqrestore(&priv->lock, flags);
2190 hdr_len = ieee80211_get_hdrlen(fc);
2192 /* Find (or create) index into station table for destination station */
2193 sta_id = iwl4965_get_sta_id(priv, hdr);
2194 if (sta_id == IWL_INVALID_STATION) {
2195 DECLARE_MAC_BUF(mac);
2197 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2198 print_mac(mac, hdr->addr1));
2202 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2204 qc = ieee80211_get_qos_ctrl(hdr);
2206 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2207 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2209 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2211 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2213 #ifdef CONFIG_IWL4965_HT
2214 /* aggregation is on for this <sta,tid> */
2215 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2216 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2217 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2218 #endif /* CONFIG_IWL4965_HT */
2221 /* Descriptor for chosen Tx queue */
2222 txq = &priv->txq[txq_id];
2225 spin_lock_irqsave(&priv->lock, flags);
2227 /* Set up first empty TFD within this queue's circular TFD buffer */
2228 tfd = &txq->bd[q->write_ptr];
2229 memset(tfd, 0, sizeof(*tfd));
2230 control_flags = (u32 *) tfd;
2231 idx = get_cmd_index(q, q->write_ptr, 0);
2233 /* Set up driver data for this TFD */
2234 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2235 txq->txb[q->write_ptr].skb[0] = skb;
2236 memcpy(&(txq->txb[q->write_ptr].status.control),
2237 ctl, sizeof(struct ieee80211_tx_control));
2239 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2240 out_cmd = &txq->cmd[idx];
2241 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2242 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2245 * Set up the Tx-command (not MAC!) header.
2246 * Store the chosen Tx queue and TFD index within the sequence field;
2247 * after Tx, uCode's Tx response will return this value so driver can
2248 * locate the frame within the tx queue and do post-tx processing.
2250 out_cmd->hdr.cmd = REPLY_TX;
2251 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2252 INDEX_TO_SEQ(q->write_ptr)));
2254 /* Copy MAC header from skb into command buffer */
2255 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2258 * Use the first empty entry in this queue's command buffer array
2259 * to contain the Tx command and MAC header concatenated together
2260 * (payload data will be in another buffer).
2261 * Size of this varies, due to varying MAC header length.
2262 * If end is not dword aligned, we'll have 2 extra bytes at the end
2263 * of the MAC header (device reads on dword boundaries).
2264 * We'll tell device about this padding later.
2266 len = priv->hw_params.tx_cmd_len +
2267 sizeof(struct iwl_cmd_header) + hdr_len;
2270 len = (len + 3) & ~3;
2277 /* Physical address of this Tx command's header (not MAC header!),
2278 * within command buffer array. */
2279 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2280 offsetof(struct iwl_cmd, hdr);
2282 /* Add buffer containing Tx command and MAC(!) header to TFD's
2284 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2286 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2287 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2289 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2290 * if any (802.11 null frames have no payload). */
2291 len = skb->len - hdr_len;
2293 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2294 len, PCI_DMA_TODEVICE);
2295 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2298 /* Tell 4965 about any 2-byte padding after MAC header */
2300 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2302 /* Total # bytes to be transmitted */
2303 len = (u16)skb->len;
2304 out_cmd->cmd.tx.len = cpu_to_le16(len);
2306 /* TODO need this for burst mode later on */
2307 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2309 /* set is_hcca to 0; it probably will never be implemented */
2310 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2312 iwl_update_tx_stats(priv, fc, len);
2314 scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2315 offsetof(struct iwl4965_tx_cmd, scratch);
2316 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2317 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2319 if (!ieee80211_get_morefrag(hdr)) {
2320 txq->need_update = 1;
2322 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2323 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2327 txq->need_update = 0;
2330 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2331 sizeof(out_cmd->cmd.tx));
2333 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2334 ieee80211_get_hdrlen(fc));
2336 /* Set up entry for this TFD in Tx byte-count array */
2337 priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
2339 /* Tell device the write index *just past* this latest filled TFD */
2340 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2341 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2342 spin_unlock_irqrestore(&priv->lock, flags);
2347 if ((iwl4965_queue_space(q) < q->high_mark)
2348 && priv->mac80211_registered) {
2349 if (wait_write_ptr) {
2350 spin_lock_irqsave(&priv->lock, flags);
2351 txq->need_update = 1;
2352 iwl4965_tx_queue_update_write_ptr(priv, txq);
2353 spin_unlock_irqrestore(&priv->lock, flags);
2356 ieee80211_stop_queue(priv->hw, ctl->queue);
2362 spin_unlock_irqrestore(&priv->lock, flags);
2367 static void iwl4965_set_rate(struct iwl_priv *priv)
2369 const struct ieee80211_supported_band *hw = NULL;
2370 struct ieee80211_rate *rate;
2373 hw = iwl4965_get_hw_mode(priv, priv->band);
2375 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2379 priv->active_rate = 0;
2380 priv->active_rate_basic = 0;
2382 for (i = 0; i < hw->n_bitrates; i++) {
2383 rate = &(hw->bitrates[i]);
2384 if (rate->hw_value < IWL_RATE_COUNT)
2385 priv->active_rate |= (1 << rate->hw_value);
2388 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2389 priv->active_rate, priv->active_rate_basic);
2392 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2393 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2396 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2397 priv->staging_rxon.cck_basic_rates =
2398 ((priv->active_rate_basic &
2399 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2401 priv->staging_rxon.cck_basic_rates =
2402 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2404 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2405 priv->staging_rxon.ofdm_basic_rates =
2406 ((priv->active_rate_basic &
2407 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2408 IWL_FIRST_OFDM_RATE) & 0xFF;
2410 priv->staging_rxon.ofdm_basic_rates =
2411 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2414 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2416 unsigned long flags;
2418 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2421 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2422 disable_radio ? "OFF" : "ON");
2424 if (disable_radio) {
2425 iwl4965_scan_cancel(priv);
2426 /* FIXME: This is a workaround for AP */
2427 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2428 spin_lock_irqsave(&priv->lock, flags);
2429 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2430 CSR_UCODE_SW_BIT_RFKILL);
2431 spin_unlock_irqrestore(&priv->lock, flags);
2432 /* call the host command only if no hw rf-kill set */
2433 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
2435 iwl4965_send_card_state(priv,
2436 CARD_STATE_CMD_DISABLE,
2438 set_bit(STATUS_RF_KILL_SW, &priv->status);
2440 /* make sure mac80211 stop sending Tx frame */
2441 if (priv->mac80211_registered)
2442 ieee80211_stop_queues(priv->hw);
2447 spin_lock_irqsave(&priv->lock, flags);
2448 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2450 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2451 spin_unlock_irqrestore(&priv->lock, flags);
2456 spin_lock_irqsave(&priv->lock, flags);
2457 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2458 if (!iwl_grab_nic_access(priv))
2459 iwl_release_nic_access(priv);
2460 spin_unlock_irqrestore(&priv->lock, flags);
2462 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2463 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2464 "disabled by HW switch\n");
2468 queue_work(priv->workqueue, &priv->restart);
2472 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2473 u32 decrypt_res, struct ieee80211_rx_status *stats)
2476 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2478 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2481 if (!(fc & IEEE80211_FCTL_PROTECTED))
2484 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2485 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2486 case RX_RES_STATUS_SEC_TYPE_TKIP:
2487 /* The uCode has got a bad phase 1 Key, pushes the packet.
2488 * Decryption will be done in SW. */
2489 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2490 RX_RES_STATUS_BAD_KEY_TTAK)
2493 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2494 RX_RES_STATUS_BAD_ICV_MIC)
2495 stats->flag |= RX_FLAG_MMIC_ERROR;
2496 case RX_RES_STATUS_SEC_TYPE_WEP:
2497 case RX_RES_STATUS_SEC_TYPE_CCMP:
2498 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2499 RX_RES_STATUS_DECRYPT_OK) {
2500 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2501 stats->flag |= RX_FLAG_DECRYPTED;
2511 #define IWL_PACKET_RETRY_TIME HZ
2513 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2515 u16 sc = le16_to_cpu(header->seq_ctrl);
2516 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2517 u16 frag = sc & IEEE80211_SCTL_FRAG;
2518 u16 *last_seq, *last_frag;
2519 unsigned long *last_time;
2521 switch (priv->iw_mode) {
2522 case IEEE80211_IF_TYPE_IBSS:{
2523 struct list_head *p;
2524 struct iwl4965_ibss_seq *entry = NULL;
2525 u8 *mac = header->addr2;
2526 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2528 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2529 entry = list_entry(p, struct iwl4965_ibss_seq, list);
2530 if (!compare_ether_addr(entry->mac, mac))
2533 if (p == &priv->ibss_mac_hash[index]) {
2534 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2536 IWL_ERROR("Cannot malloc new mac entry\n");
2539 memcpy(entry->mac, mac, ETH_ALEN);
2540 entry->seq_num = seq;
2541 entry->frag_num = frag;
2542 entry->packet_time = jiffies;
2543 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2546 last_seq = &entry->seq_num;
2547 last_frag = &entry->frag_num;
2548 last_time = &entry->packet_time;
2551 case IEEE80211_IF_TYPE_STA:
2552 last_seq = &priv->last_seq_num;
2553 last_frag = &priv->last_frag_num;
2554 last_time = &priv->last_packet_time;
2559 if ((*last_seq == seq) &&
2560 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2561 if (*last_frag == frag)
2563 if (*last_frag + 1 != frag)
2564 /* out-of-order fragment */
2570 *last_time = jiffies;
2577 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2579 #include "iwl-spectrum.h"
2581 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2582 #define BEACON_TIME_MASK_HIGH 0xFF000000
2583 #define TIME_UNIT 1024
2586 * extended beacon time format
2587 * time in usec will be changed into a 32-bit value in 8:24 format
2588 * the high 1 byte is the beacon counts
2589 * the lower 3 bytes is the time in usec within one beacon interval
2592 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2596 u32 interval = beacon_interval * 1024;
2598 if (!interval || !usec)
2601 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2602 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2604 return (quot << 24) + rem;
2607 /* base is usually what we get from ucode with each received frame,
2608 * the same as HW timer counter counting down
2611 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2613 u32 base_low = base & BEACON_TIME_MASK_LOW;
2614 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2615 u32 interval = beacon_interval * TIME_UNIT;
2616 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2617 (addon & BEACON_TIME_MASK_HIGH);
2619 if (base_low > addon_low)
2620 res += base_low - addon_low;
2621 else if (base_low < addon_low) {
2622 res += interval + base_low - addon_low;
2627 return cpu_to_le32(res);
2630 static int iwl4965_get_measurement(struct iwl_priv *priv,
2631 struct ieee80211_measurement_params *params,
2634 struct iwl4965_spectrum_cmd spectrum;
2635 struct iwl4965_rx_packet *res;
2636 struct iwl_host_cmd cmd = {
2637 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2638 .data = (void *)&spectrum,
2639 .meta.flags = CMD_WANT_SKB,
2641 u32 add_time = le64_to_cpu(params->start_time);
2643 int spectrum_resp_status;
2644 int duration = le16_to_cpu(params->duration);
2646 if (iwl_is_associated(priv))
2648 iwl4965_usecs_to_beacons(
2649 le64_to_cpu(params->start_time) - priv->last_tsf,
2650 le16_to_cpu(priv->rxon_timing.beacon_interval));
2652 memset(&spectrum, 0, sizeof(spectrum));
2654 spectrum.channel_count = cpu_to_le16(1);
2656 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2657 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2658 cmd.len = sizeof(spectrum);
2659 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2661 if (iwl_is_associated(priv))
2662 spectrum.start_time =
2663 iwl4965_add_beacon_time(priv->last_beacon_time,
2665 le16_to_cpu(priv->rxon_timing.beacon_interval));
2667 spectrum.start_time = 0;
2669 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2670 spectrum.channels[0].channel = params->channel;
2671 spectrum.channels[0].type = type;
2672 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2673 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2674 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2676 rc = iwl_send_cmd_sync(priv, &cmd);
2680 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2681 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2682 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2686 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2687 switch (spectrum_resp_status) {
2688 case 0: /* Command will be handled */
2689 if (res->u.spectrum.id != 0xff) {
2691 ("Replaced existing measurement: %d\n",
2692 res->u.spectrum.id);
2693 priv->measurement_status &= ~MEASUREMENT_READY;
2695 priv->measurement_status |= MEASUREMENT_ACTIVE;
2699 case 1: /* Command will not be handled */
2704 dev_kfree_skb_any(cmd.meta.u.skb);
2710 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2711 struct iwl4965_tx_info *tx_sta)
2714 tx_sta->status.ack_signal = 0;
2715 tx_sta->status.excessive_retries = 0;
2716 tx_sta->status.queue_length = 0;
2717 tx_sta->status.queue_number = 0;
2720 ieee80211_tx_status_irqsafe(priv->hw,
2721 tx_sta->skb[0], &(tx_sta->status));
2723 ieee80211_tx_status(priv->hw,
2724 tx_sta->skb[0], &(tx_sta->status));
2726 tx_sta->skb[0] = NULL;
2730 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2732 * When FW advances 'R' index, all entries between old and new 'R' index
2733 * need to be reclaimed. As result, some free space forms. If there is
2734 * enough free space (> low mark), wake the stack that feeds us.
2736 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2738 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2739 struct iwl4965_queue *q = &txq->q;
2742 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2743 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2744 "is out of range [0-%d] %d %d.\n", txq_id,
2745 index, q->n_bd, q->write_ptr, q->read_ptr);
2749 for (index = iwl_queue_inc_wrap(index, q->n_bd);
2750 q->read_ptr != index;
2751 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2752 if (txq_id != IWL_CMD_QUEUE_NUM) {
2753 iwl4965_txstatus_to_ieee(priv,
2754 &(txq->txb[txq->q.read_ptr]));
2755 iwl4965_hw_txq_free_tfd(priv, txq);
2756 } else if (nfreed > 1) {
2757 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2758 q->write_ptr, q->read_ptr);
2759 queue_work(priv->workqueue, &priv->restart);
2764 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2765 (txq_id != IWL_CMD_QUEUE_NUM) &&
2766 priv->mac80211_registered)
2767 ieee80211_wake_queue(priv->hw, txq_id); */
2773 static int iwl4965_is_tx_success(u32 status)
2775 status &= TX_STATUS_MSK;
2776 return (status == TX_STATUS_SUCCESS)
2777 || (status == TX_STATUS_DIRECT_DONE);
2780 /******************************************************************************
2782 * Generic RX handler implementations
2784 ******************************************************************************/
2785 #ifdef CONFIG_IWL4965_HT
2787 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2788 struct ieee80211_hdr *hdr)
2790 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2793 u8 *da = ieee80211_get_DA(hdr);
2794 return iwl4965_hw_find_station(priv, da);
2798 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2799 struct iwl_priv *priv, int txq_id, int idx)
2801 if (priv->txq[txq_id].txb[idx].skb[0])
2802 return (struct ieee80211_hdr *)priv->txq[txq_id].
2803 txb[idx].skb[0]->data;
2807 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2809 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2810 tx_resp->frame_count);
2811 return le32_to_cpu(*scd_ssn) & MAX_SN;
2816 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2818 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2819 struct iwl4965_ht_agg *agg,
2820 struct iwl4965_tx_resp_agg *tx_resp,
2824 struct agg_tx_status *frame_status = &tx_resp->status;
2825 struct ieee80211_tx_status *tx_status = NULL;
2826 struct ieee80211_hdr *hdr = NULL;
2831 if (agg->wait_for_ba)
2832 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2834 agg->frame_count = tx_resp->frame_count;
2835 agg->start_idx = start_idx;
2836 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2839 /* # frames attempted by Tx command */
2840 if (agg->frame_count == 1) {
2841 /* Only one frame was attempted; no block-ack will arrive */
2842 status = le16_to_cpu(frame_status[0].status);
2843 seq = le16_to_cpu(frame_status[0].sequence);
2844 idx = SEQ_TO_INDEX(seq);
2845 txq_id = SEQ_TO_QUEUE(seq);
2847 /* FIXME: code repetition */
2848 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2849 agg->frame_count, agg->start_idx, idx);
2851 tx_status = &(priv->txq[txq_id].txb[idx].status);
2852 tx_status->retry_count = tx_resp->failure_frame;
2853 tx_status->queue_number = status & 0xff;
2854 tx_status->queue_length = tx_resp->failure_rts;
2855 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2856 tx_status->flags = iwl4965_is_tx_success(status)?
2857 IEEE80211_TX_STATUS_ACK : 0;
2858 iwl4965_hwrate_to_tx_control(priv,
2859 le32_to_cpu(tx_resp->rate_n_flags),
2860 &tx_status->control);
2861 /* FIXME: code repetition end */
2863 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2864 status & 0xff, tx_resp->failure_frame);
2865 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2866 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2868 agg->wait_for_ba = 0;
2870 /* Two or more frames were attempted; expect block-ack */
2872 int start = agg->start_idx;
2874 /* Construct bit-map of pending frames within Tx window */
2875 for (i = 0; i < agg->frame_count; i++) {
2877 status = le16_to_cpu(frame_status[i].status);
2878 seq = le16_to_cpu(frame_status[i].sequence);
2879 idx = SEQ_TO_INDEX(seq);
2880 txq_id = SEQ_TO_QUEUE(seq);
2882 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2883 AGG_TX_STATE_ABORT_MSK))
2886 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2887 agg->frame_count, txq_id, idx);
2889 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2891 sc = le16_to_cpu(hdr->seq_ctrl);
2892 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2893 IWL_ERROR("BUG_ON idx doesn't match seq control"
2894 " idx=%d, seq_idx=%d, seq=%d\n",
2900 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2901 i, idx, SEQ_TO_SN(sc));
2905 sh = (start - idx) + 0xff;
2906 bitmap = bitmap << sh;
2909 } else if (sh < -64)
2910 sh = 0xff - (start - idx);
2914 bitmap = bitmap << sh;
2917 bitmap |= (1 << sh);
2918 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2919 start, (u32)(bitmap & 0xFFFFFFFF));
2922 agg->bitmap = bitmap;
2923 agg->start_idx = start;
2924 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2925 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2926 agg->frame_count, agg->start_idx,
2927 (unsigned long long)agg->bitmap);
2930 agg->wait_for_ba = 1;
2937 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2939 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2940 struct iwl4965_rx_mem_buffer *rxb)
2942 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2943 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2944 int txq_id = SEQ_TO_QUEUE(sequence);
2945 int index = SEQ_TO_INDEX(sequence);
2946 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2947 struct ieee80211_tx_status *tx_status;
2948 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2949 u32 status = le32_to_cpu(tx_resp->status);
2950 #ifdef CONFIG_IWL4965_HT
2951 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2952 struct ieee80211_hdr *hdr;
2956 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2957 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2958 "is out of range [0-%d] %d %d\n", txq_id,
2959 index, txq->q.n_bd, txq->q.write_ptr,
2964 #ifdef CONFIG_IWL4965_HT
2965 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
2966 qc = ieee80211_get_qos_ctrl(hdr);
2969 tid = le16_to_cpu(*qc) & 0xf;
2971 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
2972 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2973 IWL_ERROR("Station not known\n");
2977 if (txq->sched_retry) {
2978 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2979 struct iwl4965_ht_agg *agg = NULL;
2984 agg = &priv->stations[sta_id].tid[tid].agg;
2986 iwl4965_tx_status_reply_tx(priv, agg,
2987 (struct iwl4965_tx_resp_agg *)tx_resp, index);
2989 if ((tx_resp->frame_count == 1) &&
2990 !iwl4965_is_tx_success(status)) {
2991 /* TODO: send BAR */
2994 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2996 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2997 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2998 "%d index %d\n", scd_ssn , index);
2999 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3000 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3002 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3003 txq_id >= 0 && priv->mac80211_registered &&
3004 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3005 ieee80211_wake_queue(priv->hw, txq_id);
3007 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3010 #endif /* CONFIG_IWL4965_HT */
3011 tx_status = &(txq->txb[txq->q.read_ptr].status);
3013 tx_status->retry_count = tx_resp->failure_frame;
3014 tx_status->queue_number = status;
3015 tx_status->queue_length = tx_resp->bt_kill_count;
3016 tx_status->queue_length |= tx_resp->failure_rts;
3018 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3019 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3020 &tx_status->control);
3022 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3023 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3024 status, le32_to_cpu(tx_resp->rate_n_flags),
3025 tx_resp->failure_frame);
3027 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3029 #ifdef CONFIG_IWL4965_HT
3030 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3032 if (tid != MAX_TID_COUNT)
3033 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3034 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3036 priv->mac80211_registered)
3037 ieee80211_wake_queue(priv->hw, txq_id);
3038 if (tid != MAX_TID_COUNT)
3039 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3042 #ifdef CONFIG_IWL4965_HT
3044 #endif /* CONFIG_IWL4965_HT */
3046 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3047 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3051 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3052 struct iwl4965_rx_mem_buffer *rxb)
3054 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3055 struct iwl4965_alive_resp *palive;
3056 struct delayed_work *pwork;
3058 palive = &pkt->u.alive_frame;
3060 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3062 palive->is_valid, palive->ver_type,
3063 palive->ver_subtype);
3065 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3066 IWL_DEBUG_INFO("Initialization Alive received.\n");
3067 memcpy(&priv->card_alive_init,
3068 &pkt->u.alive_frame,
3069 sizeof(struct iwl4965_init_alive_resp));
3070 pwork = &priv->init_alive_start;
3072 IWL_DEBUG_INFO("Runtime Alive received.\n");
3073 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3074 sizeof(struct iwl4965_alive_resp));
3075 pwork = &priv->alive_start;
3078 /* We delay the ALIVE response by 5ms to
3079 * give the HW RF Kill time to activate... */
3080 if (palive->is_valid == UCODE_VALID_OK)
3081 queue_delayed_work(priv->workqueue, pwork,
3082 msecs_to_jiffies(5));
3084 IWL_WARNING("uCode did not respond OK.\n");
3087 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3088 struct iwl4965_rx_mem_buffer *rxb)
3090 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3092 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3096 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3097 struct iwl4965_rx_mem_buffer *rxb)
3099 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3101 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3102 "seq 0x%04X ser 0x%08X\n",
3103 le32_to_cpu(pkt->u.err_resp.error_type),
3104 get_cmd_string(pkt->u.err_resp.cmd_id),
3105 pkt->u.err_resp.cmd_id,
3106 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3107 le32_to_cpu(pkt->u.err_resp.error_info));
3110 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3112 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3114 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3115 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3116 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3117 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3118 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3119 rxon->channel = csa->channel;
3120 priv->staging_rxon.channel = csa->channel;
3123 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3124 struct iwl4965_rx_mem_buffer *rxb)
3126 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3127 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3128 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3130 if (!report->state) {
3131 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3132 "Spectrum Measure Notification: Start\n");
3136 memcpy(&priv->measure_report, report, sizeof(*report));
3137 priv->measurement_status |= MEASUREMENT_READY;
3141 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3142 struct iwl4965_rx_mem_buffer *rxb)
3144 #ifdef CONFIG_IWLWIFI_DEBUG
3145 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3146 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3147 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3148 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3152 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3153 struct iwl4965_rx_mem_buffer *rxb)
3155 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3156 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3157 "notification for %s:\n",
3158 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3159 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3162 static void iwl4965_bg_beacon_update(struct work_struct *work)
3164 struct iwl_priv *priv =
3165 container_of(work, struct iwl_priv, beacon_update);
3166 struct sk_buff *beacon;
3168 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3169 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3172 IWL_ERROR("update beacon failed\n");
3176 mutex_lock(&priv->mutex);
3177 /* new beacon skb is allocated every time; dispose previous.*/
3178 if (priv->ibss_beacon)
3179 dev_kfree_skb(priv->ibss_beacon);
3181 priv->ibss_beacon = beacon;
3182 mutex_unlock(&priv->mutex);
3184 iwl4965_send_beacon_cmd(priv);
3187 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3188 struct iwl4965_rx_mem_buffer *rxb)
3190 #ifdef CONFIG_IWLWIFI_DEBUG
3191 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3192 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3193 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3195 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3196 "tsf %d %d rate %d\n",
3197 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3198 beacon->beacon_notify_hdr.failure_frame,
3199 le32_to_cpu(beacon->ibss_mgr_status),
3200 le32_to_cpu(beacon->high_tsf),
3201 le32_to_cpu(beacon->low_tsf), rate);
3204 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3205 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3206 queue_work(priv->workqueue, &priv->beacon_update);
3209 /* Service response to REPLY_SCAN_CMD (0x80) */
3210 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3211 struct iwl4965_rx_mem_buffer *rxb)
3213 #ifdef CONFIG_IWLWIFI_DEBUG
3214 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3215 struct iwl4965_scanreq_notification *notif =
3216 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3218 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3222 /* Service SCAN_START_NOTIFICATION (0x82) */
3223 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3224 struct iwl4965_rx_mem_buffer *rxb)
3226 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3227 struct iwl4965_scanstart_notification *notif =
3228 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3229 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3230 IWL_DEBUG_SCAN("Scan start: "
3232 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3234 notif->band ? "bg" : "a",
3236 notif->tsf_low, notif->status, notif->beacon_timer);
3239 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3240 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3241 struct iwl4965_rx_mem_buffer *rxb)
3243 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3244 struct iwl4965_scanresults_notification *notif =
3245 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3247 IWL_DEBUG_SCAN("Scan ch.res: "
3249 "(TSF: 0x%08X:%08X) - %d "
3250 "elapsed=%lu usec (%dms since last)\n",
3252 notif->band ? "bg" : "a",
3253 le32_to_cpu(notif->tsf_high),
3254 le32_to_cpu(notif->tsf_low),
3255 le32_to_cpu(notif->statistics[0]),
3256 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3257 jiffies_to_msecs(elapsed_jiffies
3258 (priv->last_scan_jiffies, jiffies)));
3260 priv->last_scan_jiffies = jiffies;
3261 priv->next_scan_jiffies = 0;
3264 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3265 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3266 struct iwl4965_rx_mem_buffer *rxb)
3268 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3269 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3271 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3272 scan_notif->scanned_channels,
3273 scan_notif->tsf_low,
3274 scan_notif->tsf_high, scan_notif->status);
3276 /* The HW is no longer scanning */
3277 clear_bit(STATUS_SCAN_HW, &priv->status);
3279 /* The scan completion notification came in, so kill that timer... */
3280 cancel_delayed_work(&priv->scan_check);
3282 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3283 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3285 jiffies_to_msecs(elapsed_jiffies
3286 (priv->scan_pass_start, jiffies)));
3288 /* Remove this scanned band from the list of pending
3289 * bands to scan, band G precedes A in order of scanning
3290 * as seen in iwl_bg_request_scan */
3291 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3292 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3293 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
3294 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3296 /* If a request to abort was given, or the scan did not succeed
3297 * then we reset the scan state machine and terminate,
3298 * re-queuing another scan if one has been requested */
3299 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3300 IWL_DEBUG_INFO("Aborted scan completed.\n");
3301 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3303 /* If there are more bands on this scan pass reschedule */
3304 if (priv->scan_bands)
3308 priv->last_scan_jiffies = jiffies;
3309 priv->next_scan_jiffies = 0;
3310 IWL_DEBUG_INFO("Setting scan to off\n");
3312 clear_bit(STATUS_SCANNING, &priv->status);
3314 IWL_DEBUG_INFO("Scan took %dms\n",
3315 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3317 queue_work(priv->workqueue, &priv->scan_completed);
3322 priv->scan_pass_start = jiffies;
3323 queue_work(priv->workqueue, &priv->request_scan);
3326 /* Handle notification from uCode that card's power state is changing
3327 * due to software, hardware, or critical temperature RFKILL */
3328 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3329 struct iwl4965_rx_mem_buffer *rxb)
3331 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3332 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3333 unsigned long status = priv->status;
3335 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3336 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3337 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3339 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3340 RF_CARD_DISABLED)) {
3342 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3343 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3345 if (!iwl_grab_nic_access(priv)) {
3347 priv, HBUS_TARG_MBX_C,
3348 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3350 iwl_release_nic_access(priv);
3353 if (!(flags & RXON_CARD_DISABLED)) {
3354 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3355 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3356 if (!iwl_grab_nic_access(priv)) {
3358 priv, HBUS_TARG_MBX_C,
3359 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3361 iwl_release_nic_access(priv);
3365 if (flags & RF_CARD_DISABLED) {
3366 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3367 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3368 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3369 if (!iwl_grab_nic_access(priv))
3370 iwl_release_nic_access(priv);
3374 if (flags & HW_CARD_DISABLED)
3375 set_bit(STATUS_RF_KILL_HW, &priv->status);
3377 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3380 if (flags & SW_CARD_DISABLED)
3381 set_bit(STATUS_RF_KILL_SW, &priv->status);
3383 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3385 if (!(flags & RXON_CARD_DISABLED))
3386 iwl4965_scan_cancel(priv);
3388 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3389 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3390 (test_bit(STATUS_RF_KILL_SW, &status) !=
3391 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3392 queue_work(priv->workqueue, &priv->rf_kill);
3394 wake_up_interruptible(&priv->wait_command_queue);
3398 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3400 * Setup the RX handlers for each of the reply types sent from the uCode
3403 * This function chains into the hardware specific files for them to setup
3404 * any hardware specific handlers as well.
3406 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3408 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3409 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3410 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3411 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3412 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3413 iwl4965_rx_spectrum_measure_notif;
3414 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3415 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3416 iwl4965_rx_pm_debug_statistics_notif;
3417 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3420 * The same handler is used for both the REPLY to a discrete
3421 * statistics request from the host as well as for the periodic
3422 * statistics notifications (after received beacons) from the uCode.
3424 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3425 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3427 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3428 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3429 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3430 iwl4965_rx_scan_results_notif;
3431 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3432 iwl4965_rx_scan_complete_notif;
3433 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3434 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3436 /* Set up hardware specific Rx handlers */
3437 iwl4965_hw_rx_handler_setup(priv);
3441 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3442 * @rxb: Rx buffer to reclaim
3444 * If an Rx buffer has an async callback associated with it the callback
3445 * will be executed. The attached skb (if present) will only be freed
3446 * if the callback returns 1
3448 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3449 struct iwl4965_rx_mem_buffer *rxb)
3451 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3452 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3453 int txq_id = SEQ_TO_QUEUE(sequence);
3454 int index = SEQ_TO_INDEX(sequence);
3455 int huge = sequence & SEQ_HUGE_FRAME;
3457 struct iwl_cmd *cmd;
3459 /* If a Tx command is being handled and it isn't in the actual
3460 * command queue then there a command routing bug has been introduced
3461 * in the queue management code. */
3462 if (txq_id != IWL_CMD_QUEUE_NUM)
3463 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3464 txq_id, pkt->hdr.cmd);
3465 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3467 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3468 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3470 /* Input error checking is done when commands are added to queue. */
3471 if (cmd->meta.flags & CMD_WANT_SKB) {
3472 cmd->meta.source->u.skb = rxb->skb;
3474 } else if (cmd->meta.u.callback &&
3475 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3478 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3480 if (!(cmd->meta.flags & CMD_ASYNC)) {
3481 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3482 wake_up_interruptible(&priv->wait_command_queue);
3486 /************************** RX-FUNCTIONS ****************************/
3488 * Rx theory of operation
3490 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3491 * each of which point to Receive Buffers to be filled by 4965. These get
3492 * used not only for Rx frames, but for any command response or notification
3493 * from the 4965. The driver and 4965 manage the Rx buffers by means
3494 * of indexes into the circular buffer.
3497 * The host/firmware share two index registers for managing the Rx buffers.
3499 * The READ index maps to the first position that the firmware may be writing
3500 * to -- the driver can read up to (but not including) this position and get
3502 * The READ index is managed by the firmware once the card is enabled.
3504 * The WRITE index maps to the last position the driver has read from -- the
3505 * position preceding WRITE is the last slot the firmware can place a packet.
3507 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3510 * During initialization, the host sets up the READ queue position to the first
3511 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3513 * When the firmware places a packet in a buffer, it will advance the READ index
3514 * and fire the RX interrupt. The driver can then query the READ index and
3515 * process as many packets as possible, moving the WRITE index forward as it
3516 * resets the Rx queue buffers with new memory.
3518 * The management in the driver is as follows:
3519 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3520 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3521 * to replenish the iwl->rxq->rx_free.
3522 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3523 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3524 * 'processed' and 'read' driver indexes as well)
3525 * + A received packet is processed and handed to the kernel network stack,
3526 * detached from the iwl->rxq. The driver 'processed' index is updated.
3527 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3528 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3529 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3530 * were enough free buffers and RX_STALLED is set it is cleared.
3535 * iwl4965_rx_queue_alloc() Allocates rx_free
3536 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3537 * iwl4965_rx_queue_restock
3538 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3539 * queue, updates firmware pointers, and updates
3540 * the WRITE index. If insufficient rx_free buffers
3541 * are available, schedules iwl4965_rx_replenish
3543 * -- enable interrupts --
3544 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3545 * READ INDEX, detaching the SKB from the pool.
3546 * Moves the packet buffer from queue to rx_used.
3547 * Calls iwl4965_rx_queue_restock to refill any empty
3554 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3556 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3558 int s = q->read - q->write;
3561 /* keep some buffer to not confuse full and empty queue */
3569 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3571 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3575 unsigned long flags;
3577 spin_lock_irqsave(&q->lock, flags);
3579 if (q->need_update == 0)
3582 /* If power-saving is in use, make sure device is awake */
3583 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3584 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3586 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3587 iwl_set_bit(priv, CSR_GP_CNTRL,
3588 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3592 rc = iwl_grab_nic_access(priv);
3596 /* Device expects a multiple of 8 */
3597 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3599 iwl_release_nic_access(priv);
3601 /* Else device is assumed to be awake */
3603 /* Device expects a multiple of 8 */
3604 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3610 spin_unlock_irqrestore(&q->lock, flags);
3615 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3617 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3618 dma_addr_t dma_addr)
3620 return cpu_to_le32((u32)(dma_addr >> 8));
3625 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3627 * If there are slots in the RX queue that need to be restocked,
3628 * and we have free pre-allocated buffers, fill the ranks as much
3629 * as we can, pulling from rx_free.
3631 * This moves the 'write' index forward to catch up with 'processed', and
3632 * also updates the memory address in the firmware to reference the new
3635 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3637 struct iwl4965_rx_queue *rxq = &priv->rxq;
3638 struct list_head *element;
3639 struct iwl4965_rx_mem_buffer *rxb;
3640 unsigned long flags;
3643 spin_lock_irqsave(&rxq->lock, flags);
3644 write = rxq->write & ~0x7;
3645 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3646 /* Get next free Rx buffer, remove from free list */
3647 element = rxq->rx_free.next;
3648 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3651 /* Point to Rx buffer via next RBD in circular buffer */
3652 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3653 rxq->queue[rxq->write] = rxb;
3654 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3657 spin_unlock_irqrestore(&rxq->lock, flags);
3658 /* If the pre-allocated buffer pool is dropping low, schedule to
3660 if (rxq->free_count <= RX_LOW_WATERMARK)
3661 queue_work(priv->workqueue, &priv->rx_replenish);
3664 /* If we've added more space for the firmware to place data, tell it.
3665 * Increment device's write pointer in multiples of 8. */
3666 if ((write != (rxq->write & ~0x7))
3667 || (abs(rxq->write - rxq->read) > 7)) {
3668 spin_lock_irqsave(&rxq->lock, flags);
3669 rxq->need_update = 1;
3670 spin_unlock_irqrestore(&rxq->lock, flags);
3671 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3680 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3682 * When moving to rx_free an SKB is allocated for the slot.
3684 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3685 * This is called as a scheduled work item (except for during initialization)
3687 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3689 struct iwl4965_rx_queue *rxq = &priv->rxq;
3690 struct list_head *element;
3691 struct iwl4965_rx_mem_buffer *rxb;
3692 unsigned long flags;
3693 spin_lock_irqsave(&rxq->lock, flags);
3694 while (!list_empty(&rxq->rx_used)) {
3695 element = rxq->rx_used.next;
3696 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3698 /* Alloc a new receive buffer */
3700 alloc_skb(priv->hw_params.rx_buf_size,
3701 __GFP_NOWARN | GFP_ATOMIC);
3703 if (net_ratelimit())
3704 printk(KERN_CRIT DRV_NAME
3705 ": Can not allocate SKB buffers\n");
3706 /* We don't reschedule replenish work here -- we will
3707 * call the restock method and if it still needs
3708 * more buffers it will schedule replenish */
3711 priv->alloc_rxb_skb++;
3714 /* Get physical address of RB/SKB */
3716 pci_map_single(priv->pci_dev, rxb->skb->data,
3717 priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE);
3718 list_add_tail(&rxb->list, &rxq->rx_free);
3721 spin_unlock_irqrestore(&rxq->lock, flags);
3725 * this should be called while priv->lock is locked
3727 static void __iwl4965_rx_replenish(void *data)
3729 struct iwl_priv *priv = data;
3731 iwl4965_rx_allocate(priv);
3732 iwl4965_rx_queue_restock(priv);
3736 void iwl4965_rx_replenish(void *data)
3738 struct iwl_priv *priv = data;
3739 unsigned long flags;
3741 iwl4965_rx_allocate(priv);
3743 spin_lock_irqsave(&priv->lock, flags);
3744 iwl4965_rx_queue_restock(priv);
3745 spin_unlock_irqrestore(&priv->lock, flags);
3748 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3749 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3750 * This free routine walks the list of POOL entries and if SKB is set to
3751 * non NULL it is unmapped and freed
3753 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3756 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3757 if (rxq->pool[i].skb != NULL) {
3758 pci_unmap_single(priv->pci_dev,
3759 rxq->pool[i].dma_addr,
3760 priv->hw_params.rx_buf_size,
3761 PCI_DMA_FROMDEVICE);
3762 dev_kfree_skb(rxq->pool[i].skb);
3766 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3771 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3773 struct iwl4965_rx_queue *rxq = &priv->rxq;
3774 struct pci_dev *dev = priv->pci_dev;
3777 spin_lock_init(&rxq->lock);
3778 INIT_LIST_HEAD(&rxq->rx_free);
3779 INIT_LIST_HEAD(&rxq->rx_used);
3781 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3782 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3786 /* Fill the rx_used queue with _all_ of the Rx buffers */
3787 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3788 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3790 /* Set us so that we have processed and used all buffers, but have
3791 * not restocked the Rx queue with fresh buffers */
3792 rxq->read = rxq->write = 0;
3793 rxq->free_count = 0;
3794 rxq->need_update = 0;
3798 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3800 unsigned long flags;
3802 spin_lock_irqsave(&rxq->lock, flags);
3803 INIT_LIST_HEAD(&rxq->rx_free);
3804 INIT_LIST_HEAD(&rxq->rx_used);
3805 /* Fill the rx_used queue with _all_ of the Rx buffers */
3806 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3807 /* In the reset function, these buffers may have been allocated
3808 * to an SKB, so we need to unmap and free potential storage */
3809 if (rxq->pool[i].skb != NULL) {
3810 pci_unmap_single(priv->pci_dev,
3811 rxq->pool[i].dma_addr,
3812 priv->hw_params.rx_buf_size,
3813 PCI_DMA_FROMDEVICE);
3814 priv->alloc_rxb_skb--;
3815 dev_kfree_skb(rxq->pool[i].skb);
3816 rxq->pool[i].skb = NULL;
3818 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3821 /* Set us so that we have processed and used all buffers, but have
3822 * not restocked the Rx queue with fresh buffers */
3823 rxq->read = rxq->write = 0;
3824 rxq->free_count = 0;
3825 spin_unlock_irqrestore(&rxq->lock, flags);
3828 /* Convert linear signal-to-noise ratio into dB */
3829 static u8 ratio2dB[100] = {
3830 /* 0 1 2 3 4 5 6 7 8 9 */
3831 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3832 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3833 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3834 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3835 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3836 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3837 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3838 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3839 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3840 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3843 /* Calculates a relative dB value from a ratio of linear
3844 * (i.e. not dB) signal levels.
3845 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3846 int iwl4965_calc_db_from_ratio(int sig_ratio)
3848 /* 1000:1 or higher just report as 60 dB */
3849 if (sig_ratio >= 1000)
3852 /* 100:1 or higher, divide by 10 and use table,
3853 * add 20 dB to make up for divide by 10 */
3854 if (sig_ratio >= 100)
3855 return (20 + (int)ratio2dB[sig_ratio/10]);
3857 /* We shouldn't see this */
3861 /* Use table for ratios 1:1 - 99:1 */
3862 return (int)ratio2dB[sig_ratio];
3865 #define PERFECT_RSSI (-20) /* dBm */
3866 #define WORST_RSSI (-95) /* dBm */
3867 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3869 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3870 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3871 * about formulas used below. */
3872 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3875 int degradation = PERFECT_RSSI - rssi_dbm;
3877 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3878 * as indicator; formula is (signal dbm - noise dbm).
3879 * SNR at or above 40 is a great signal (100%).
3880 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3881 * Weakest usable signal is usually 10 - 15 dB SNR. */
3883 if (rssi_dbm - noise_dbm >= 40)
3885 else if (rssi_dbm < noise_dbm)
3887 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3889 /* Else use just the signal level.
3890 * This formula is a least squares fit of data points collected and
3891 * compared with a reference system that had a percentage (%) display
3892 * for signal quality. */
3894 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3895 (15 * RSSI_RANGE + 62 * degradation)) /
3896 (RSSI_RANGE * RSSI_RANGE);
3900 else if (sig_qual < 1)
3907 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3909 * Uses the priv->rx_handlers callback function array to invoke
3910 * the appropriate handlers, including command responses,
3911 * frame-received notifications, and other notifications.
3913 static void iwl4965_rx_handle(struct iwl_priv *priv)
3915 struct iwl4965_rx_mem_buffer *rxb;
3916 struct iwl4965_rx_packet *pkt;
3917 struct iwl4965_rx_queue *rxq = &priv->rxq;
3920 unsigned long flags;
3924 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3925 * buffer that the driver may process (last buffer filled by ucode). */
3926 r = iwl4965_hw_get_rx_read(priv);
3929 /* Rx interrupt, but nothing sent from uCode */
3931 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3933 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3937 rxb = rxq->queue[i];
3939 /* If an RXB doesn't have a Rx queue slot associated with it,
3940 * then a bug has been introduced in the queue refilling
3941 * routines -- catch it here */
3942 BUG_ON(rxb == NULL);
3944 rxq->queue[i] = NULL;
3946 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3947 priv->hw_params.rx_buf_size,
3948 PCI_DMA_FROMDEVICE);
3949 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3951 /* Reclaim a command buffer only if this packet is a response
3952 * to a (driver-originated) command.
3953 * If the packet (e.g. Rx frame) originated from uCode,
3954 * there is no command buffer to reclaim.
3955 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3956 * but apparently a few don't get set; catch them here. */
3957 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3958 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3959 (pkt->hdr.cmd != REPLY_RX) &&
3960 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3961 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3962 (pkt->hdr.cmd != REPLY_TX);
3964 /* Based on type of command response or notification,
3965 * handle those that need handling via function in
3966 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3967 if (priv->rx_handlers[pkt->hdr.cmd]) {
3968 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3969 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3970 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3971 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3973 /* No handling needed */
3974 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3975 "r %d i %d No handler needed for %s, 0x%02x\n",
3976 r, i, get_cmd_string(pkt->hdr.cmd),
3981 /* Invoke any callbacks, transfer the skb to caller, and
3982 * fire off the (possibly) blocking iwl_send_cmd()
3983 * as we reclaim the driver command queue */
3984 if (rxb && rxb->skb)
3985 iwl4965_tx_cmd_complete(priv, rxb);
3987 IWL_WARNING("Claim null rxb?\n");
3990 /* For now we just don't re-use anything. We can tweak this
3991 * later to try and re-use notification packets and SKBs that
3992 * fail to Rx correctly */
3993 if (rxb->skb != NULL) {
3994 priv->alloc_rxb_skb--;
3995 dev_kfree_skb_any(rxb->skb);
3999 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4000 priv->hw_params.rx_buf_size,
4001 PCI_DMA_FROMDEVICE);
4002 spin_lock_irqsave(&rxq->lock, flags);
4003 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4004 spin_unlock_irqrestore(&rxq->lock, flags);
4005 i = (i + 1) & RX_QUEUE_MASK;
4006 /* If there are a lot of unused frames,
4007 * restock the Rx queue so ucode wont assert. */
4012 __iwl4965_rx_replenish(priv);
4018 /* Backtrack one entry */
4020 iwl4965_rx_queue_restock(priv);
4024 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4026 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4027 struct iwl4965_tx_queue *txq)
4031 int txq_id = txq->q.id;
4033 if (txq->need_update == 0)
4036 /* if we're trying to save power */
4037 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4038 /* wake up nic if it's powered down ...
4039 * uCode will wake up, and interrupt us again, so next
4040 * time we'll skip this part. */
4041 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4043 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4044 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4045 iwl_set_bit(priv, CSR_GP_CNTRL,
4046 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4050 /* restore this queue's parameters in nic hardware. */
4051 rc = iwl_grab_nic_access(priv);
4054 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4055 txq->q.write_ptr | (txq_id << 8));
4056 iwl_release_nic_access(priv);
4058 /* else not in power-save mode, uCode will never sleep when we're
4059 * trying to tx (during RFKILL, we're not trying to tx). */
4061 iwl_write32(priv, HBUS_TARG_WRPTR,
4062 txq->q.write_ptr | (txq_id << 8));
4064 txq->need_update = 0;
4069 #ifdef CONFIG_IWLWIFI_DEBUG
4070 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4072 DECLARE_MAC_BUF(mac);
4074 IWL_DEBUG_RADIO("RX CONFIG:\n");
4075 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4076 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4077 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4078 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4079 le32_to_cpu(rxon->filter_flags));
4080 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4081 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4082 rxon->ofdm_basic_rates);
4083 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4084 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4085 print_mac(mac, rxon->node_addr));
4086 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4087 print_mac(mac, rxon->bssid_addr));
4088 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4092 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4094 IWL_DEBUG_ISR("Enabling interrupts\n");
4095 set_bit(STATUS_INT_ENABLED, &priv->status);
4096 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4099 /* call this function to flush any scheduled tasklet */
4100 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
4102 /* wait to make sure we flush pedding tasklet*/
4103 synchronize_irq(priv->pci_dev->irq);
4104 tasklet_kill(&priv->irq_tasklet);
4107 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4109 clear_bit(STATUS_INT_ENABLED, &priv->status);
4111 /* disable interrupts from uCode/NIC to host */
4112 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4114 /* acknowledge/clear/reset any interrupts still pending
4115 * from uCode or flow handler (Rx/Tx DMA) */
4116 iwl_write32(priv, CSR_INT, 0xffffffff);
4117 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4118 IWL_DEBUG_ISR("Disabled interrupts\n");
4121 static const char *desc_lookup(int i)
4129 return "BAD_CHECKSUM";
4131 return "NMI_INTERRUPT";
4135 return "FATAL_ERROR";
4141 #define ERROR_START_OFFSET (1 * sizeof(u32))
4142 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4144 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4147 u32 desc, time, count, base, data1;
4148 u32 blink1, blink2, ilink1, ilink2;
4151 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4153 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4154 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4158 rc = iwl_grab_nic_access(priv);
4160 IWL_WARNING("Can not read from adapter at this time.\n");
4164 count = iwl_read_targ_mem(priv, base);
4166 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4167 IWL_ERROR("Start IWL Error Log Dump:\n");
4168 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4171 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4172 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4173 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4174 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4175 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4176 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4177 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4178 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4179 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4181 IWL_ERROR("Desc Time "
4182 "data1 data2 line\n");
4183 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4184 desc_lookup(desc), desc, time, data1, data2, line);
4185 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4186 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4189 iwl_release_nic_access(priv);
4192 #define EVENT_START_OFFSET (4 * sizeof(u32))
4195 * iwl4965_print_event_log - Dump error event log to syslog
4197 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4199 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4200 u32 num_events, u32 mode)
4203 u32 base; /* SRAM byte address of event log header */
4204 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4205 u32 ptr; /* SRAM byte address of log data */
4206 u32 ev, time, data; /* event log data */
4208 if (num_events == 0)
4211 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4214 event_size = 2 * sizeof(u32);
4216 event_size = 3 * sizeof(u32);
4218 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4220 /* "time" is actually "data" for mode 0 (no timestamp).
4221 * place event id # at far right for easier visual parsing. */
4222 for (i = 0; i < num_events; i++) {
4223 ev = iwl_read_targ_mem(priv, ptr);
4225 time = iwl_read_targ_mem(priv, ptr);
4228 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4230 data = iwl_read_targ_mem(priv, ptr);
4232 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4237 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4240 u32 base; /* SRAM byte address of event log header */
4241 u32 capacity; /* event log capacity in # entries */
4242 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4243 u32 num_wraps; /* # times uCode wrapped to top of log */
4244 u32 next_entry; /* index of next entry to be written by uCode */
4245 u32 size; /* # entries that we'll print */
4247 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4248 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4249 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4253 rc = iwl_grab_nic_access(priv);
4255 IWL_WARNING("Can not read from adapter at this time.\n");
4259 /* event log header */
4260 capacity = iwl_read_targ_mem(priv, base);
4261 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4262 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4263 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4265 size = num_wraps ? capacity : next_entry;
4267 /* bail out if nothing in log */
4269 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4270 iwl_release_nic_access(priv);
4274 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4277 /* if uCode has wrapped back to top of log, start at the oldest entry,
4278 * i.e the next one that uCode would fill. */
4280 iwl4965_print_event_log(priv, next_entry,
4281 capacity - next_entry, mode);
4283 /* (then/else) start at top of log */
4284 iwl4965_print_event_log(priv, 0, next_entry, mode);
4286 iwl_release_nic_access(priv);
4290 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4292 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4294 /* Set the FW error flag -- cleared on iwl4965_down */
4295 set_bit(STATUS_FW_ERROR, &priv->status);
4297 /* Cancel currently queued command. */
4298 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4300 #ifdef CONFIG_IWLWIFI_DEBUG
4301 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4302 iwl4965_dump_nic_error_log(priv);
4303 iwl4965_dump_nic_event_log(priv);
4304 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4308 wake_up_interruptible(&priv->wait_command_queue);
4310 /* Keep the restart process from trying to send host
4311 * commands by clearing the INIT status bit */
4312 clear_bit(STATUS_READY, &priv->status);
4314 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4315 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4316 "Restarting adapter due to uCode error.\n");
4318 if (iwl_is_associated(priv)) {
4319 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4320 sizeof(priv->recovery_rxon));
4321 priv->error_recovering = 1;
4323 queue_work(priv->workqueue, &priv->restart);
4327 static void iwl4965_error_recovery(struct iwl_priv *priv)
4329 unsigned long flags;
4331 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4332 sizeof(priv->staging_rxon));
4333 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4334 iwl4965_commit_rxon(priv);
4336 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4338 spin_lock_irqsave(&priv->lock, flags);
4339 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4340 priv->error_recovering = 0;
4341 spin_unlock_irqrestore(&priv->lock, flags);
4344 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4346 u32 inta, handled = 0;
4348 unsigned long flags;
4349 #ifdef CONFIG_IWLWIFI_DEBUG
4353 spin_lock_irqsave(&priv->lock, flags);
4355 /* Ack/clear/reset pending uCode interrupts.
4356 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4357 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4358 inta = iwl_read32(priv, CSR_INT);
4359 iwl_write32(priv, CSR_INT, inta);
4361 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4362 * Any new interrupts that happen after this, either while we're
4363 * in this tasklet, or later, will show up in next ISR/tasklet. */
4364 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4365 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4367 #ifdef CONFIG_IWLWIFI_DEBUG
4368 if (iwl_debug_level & IWL_DL_ISR) {
4369 /* just for debug */
4370 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4371 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4372 inta, inta_mask, inta_fh);
4376 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4377 * atomic, make sure that inta covers all the interrupts that
4378 * we've discovered, even if FH interrupt came in just after
4379 * reading CSR_INT. */
4380 if (inta_fh & CSR49_FH_INT_RX_MASK)
4381 inta |= CSR_INT_BIT_FH_RX;
4382 if (inta_fh & CSR49_FH_INT_TX_MASK)
4383 inta |= CSR_INT_BIT_FH_TX;
4385 /* Now service all interrupt bits discovered above. */
4386 if (inta & CSR_INT_BIT_HW_ERR) {
4387 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4389 /* Tell the device to stop sending interrupts */
4390 iwl4965_disable_interrupts(priv);
4392 iwl4965_irq_handle_error(priv);
4394 handled |= CSR_INT_BIT_HW_ERR;
4396 spin_unlock_irqrestore(&priv->lock, flags);
4401 #ifdef CONFIG_IWLWIFI_DEBUG
4402 if (iwl_debug_level & (IWL_DL_ISR)) {
4403 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4404 if (inta & CSR_INT_BIT_SCD)
4405 IWL_DEBUG_ISR("Scheduler finished to transmit "
4406 "the frame/frames.\n");
4408 /* Alive notification via Rx interrupt will do the real work */
4409 if (inta & CSR_INT_BIT_ALIVE)
4410 IWL_DEBUG_ISR("Alive interrupt\n");
4413 /* Safely ignore these bits for debug checks below */
4414 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4416 /* HW RF KILL switch toggled */
4417 if (inta & CSR_INT_BIT_RF_KILL) {
4419 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4420 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4423 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4424 "RF_KILL bit toggled to %s.\n",
4425 hw_rf_kill ? "disable radio":"enable radio");
4427 /* Queue restart only if RF_KILL switch was set to "kill"
4428 * when we loaded driver, and is now set to "enable".
4429 * After we're Alive, RF_KILL gets handled by
4430 * iwl4965_rx_card_state_notif() */
4431 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4432 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4433 queue_work(priv->workqueue, &priv->restart);
4436 handled |= CSR_INT_BIT_RF_KILL;
4439 /* Chip got too hot and stopped itself */
4440 if (inta & CSR_INT_BIT_CT_KILL) {
4441 IWL_ERROR("Microcode CT kill error detected.\n");
4442 handled |= CSR_INT_BIT_CT_KILL;
4445 /* Error detected by uCode */
4446 if (inta & CSR_INT_BIT_SW_ERR) {
4447 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4449 iwl4965_irq_handle_error(priv);
4450 handled |= CSR_INT_BIT_SW_ERR;
4453 /* uCode wakes up after power-down sleep */
4454 if (inta & CSR_INT_BIT_WAKEUP) {
4455 IWL_DEBUG_ISR("Wakeup interrupt\n");
4456 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4457 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4458 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4459 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4460 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4461 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4462 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4464 handled |= CSR_INT_BIT_WAKEUP;
4467 /* All uCode command responses, including Tx command responses,
4468 * Rx "responses" (frame-received notification), and other
4469 * notifications from uCode come through here*/
4470 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4471 iwl4965_rx_handle(priv);
4472 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4475 if (inta & CSR_INT_BIT_FH_TX) {
4476 IWL_DEBUG_ISR("Tx interrupt\n");
4477 handled |= CSR_INT_BIT_FH_TX;
4480 if (inta & ~handled)
4481 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4483 if (inta & ~CSR_INI_SET_MASK) {
4484 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4485 inta & ~CSR_INI_SET_MASK);
4486 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4489 /* Re-enable all interrupts */
4490 /* only Re-enable if diabled by irq */
4491 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4492 iwl4965_enable_interrupts(priv);
4494 #ifdef CONFIG_IWLWIFI_DEBUG
4495 if (iwl_debug_level & (IWL_DL_ISR)) {
4496 inta = iwl_read32(priv, CSR_INT);
4497 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4498 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4499 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4500 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4503 spin_unlock_irqrestore(&priv->lock, flags);
4506 static irqreturn_t iwl4965_isr(int irq, void *data)
4508 struct iwl_priv *priv = data;
4509 u32 inta, inta_mask;
4514 spin_lock(&priv->lock);
4516 /* Disable (but don't clear!) interrupts here to avoid
4517 * back-to-back ISRs and sporadic interrupts from our NIC.
4518 * If we have something to service, the tasklet will re-enable ints.
4519 * If we *don't* have something, we'll re-enable before leaving here. */
4520 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4521 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4523 /* Discover which interrupts are active/pending */
4524 inta = iwl_read32(priv, CSR_INT);
4525 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4527 /* Ignore interrupt if there's nothing in NIC to service.
4528 * This may be due to IRQ shared with another device,
4529 * or due to sporadic interrupts thrown from our NIC. */
4530 if (!inta && !inta_fh) {
4531 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4535 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4536 /* Hardware disappeared. It might have already raised
4538 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4542 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4543 inta, inta_mask, inta_fh);
4545 inta &= ~CSR_INT_BIT_SCD;
4547 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4548 if (likely(inta || inta_fh))
4549 tasklet_schedule(&priv->irq_tasklet);
4552 spin_unlock(&priv->lock);
4556 /* re-enable interrupts here since we don't have anything to service. */
4557 /* only Re-enable if diabled by irq */
4558 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4559 iwl4965_enable_interrupts(priv);
4560 spin_unlock(&priv->lock);
4564 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4565 * sending probe req. This should be set long enough to hear probe responses
4566 * from more than one AP. */
4567 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4568 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4570 /* For faster active scanning, scan will move to the next channel if fewer than
4571 * PLCP_QUIET_THRESH packets are heard on this channel within
4572 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4573 * time if it's a quiet channel (nothing responded to our probe, and there's
4574 * no other traffic).
4575 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4576 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4577 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4579 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4580 * Must be set longer than active dwell time.
4581 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4582 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4583 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4584 #define IWL_PASSIVE_DWELL_BASE (100)
4585 #define IWL_CHANNEL_TUNE_TIME 5
4587 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4588 enum ieee80211_band band)
4590 if (band == IEEE80211_BAND_5GHZ)
4591 return IWL_ACTIVE_DWELL_TIME_52;
4593 return IWL_ACTIVE_DWELL_TIME_24;
4596 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4597 enum ieee80211_band band)
4599 u16 active = iwl4965_get_active_dwell_time(priv, band);
4600 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4601 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4602 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4604 if (iwl_is_associated(priv)) {
4605 /* If we're associated, we clamp the maximum passive
4606 * dwell time to be 98% of the beacon interval (minus
4607 * 2 * channel tune time) */
4608 passive = priv->beacon_int;
4609 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4610 passive = IWL_PASSIVE_DWELL_BASE;
4611 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4614 if (passive <= active)
4615 passive = active + 1;
4620 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4621 enum ieee80211_band band,
4622 u8 is_active, u8 direct_mask,
4623 struct iwl4965_scan_channel *scan_ch)
4625 const struct ieee80211_channel *channels = NULL;
4626 const struct ieee80211_supported_band *sband;
4627 const struct iwl_channel_info *ch_info;
4628 u16 passive_dwell = 0;
4629 u16 active_dwell = 0;
4632 sband = iwl4965_get_hw_mode(priv, band);
4636 channels = sband->channels;
4638 active_dwell = iwl4965_get_active_dwell_time(priv, band);
4639 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4641 for (i = 0, added = 0; i < sband->n_channels; i++) {
4642 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4645 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4647 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
4648 if (!is_channel_valid(ch_info)) {
4649 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4654 if (!is_active || is_channel_passive(ch_info) ||
4655 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4656 scan_ch->type = 0; /* passive */
4658 scan_ch->type = 1; /* active */
4660 if (scan_ch->type & 1)
4661 scan_ch->type |= (direct_mask << 1);
4663 if (is_channel_narrow(ch_info))
4664 scan_ch->type |= (1 << 7);
4666 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4667 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4669 /* Set txpower levels to defaults */
4670 scan_ch->tpc.dsp_atten = 110;
4671 /* scan_pwr_info->tpc.dsp_atten; */
4673 /*scan_pwr_info->tpc.tx_gain; */
4674 if (band == IEEE80211_BAND_5GHZ)
4675 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4677 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4678 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4680 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4684 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4686 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4687 (scan_ch->type & 1) ?
4688 active_dwell : passive_dwell);
4694 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4698 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4699 struct ieee80211_rate *rates)
4703 for (i = 0; i < IWL_RATE_COUNT; i++) {
4704 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4705 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4706 rates[i].hw_value_short = i;
4708 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4710 * If CCK != 1M then set short preamble rate flag.
4713 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4714 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4720 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4722 int iwl4965_init_geos(struct iwl_priv *priv)
4724 struct iwl_channel_info *ch;
4725 struct ieee80211_supported_band *sband;
4726 struct ieee80211_channel *channels;
4727 struct ieee80211_channel *geo_ch;
4728 struct ieee80211_rate *rates;
4731 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4732 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4733 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4734 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4738 channels = kzalloc(sizeof(struct ieee80211_channel) *
4739 priv->channel_count, GFP_KERNEL);
4743 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4750 /* 5.2GHz channels start after the 2.4GHz channels */
4751 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4752 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4754 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4755 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4757 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4759 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4760 sband->channels = channels;
4762 sband->bitrates = rates;
4763 sband->n_bitrates = IWL_RATE_COUNT;
4765 iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4767 priv->ieee_channels = channels;
4768 priv->ieee_rates = rates;
4770 iwl4965_init_hw_rates(priv, rates);
4772 for (i = 0; i < priv->channel_count; i++) {
4773 ch = &priv->channel_info[i];
4775 /* FIXME: might be removed if scan is OK */
4776 if (!is_channel_valid(ch))
4779 if (is_channel_a_band(ch))
4780 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4782 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4784 geo_ch = &sband->channels[sband->n_channels++];
4786 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4787 geo_ch->max_power = ch->max_power_avg;
4788 geo_ch->max_antenna_gain = 0xff;
4789 geo_ch->hw_value = ch->channel;
4791 if (is_channel_valid(ch)) {
4792 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4793 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4795 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4796 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4798 if (ch->flags & EEPROM_CHANNEL_RADAR)
4799 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4801 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4802 priv->max_channel_txpower_limit =
4805 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4808 /* Save flags for reg domain usage */
4809 geo_ch->orig_flags = geo_ch->flags;
4811 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4812 ch->channel, geo_ch->center_freq,
4813 is_channel_a_band(ch) ? "5.2" : "2.4",
4814 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4815 "restricted" : "valid",
4819 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4820 priv->cfg->sku & IWL_SKU_A) {
4821 printk(KERN_INFO DRV_NAME
4822 ": Incorrectly detected BG card as ABG. Please send "
4823 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4824 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4825 priv->cfg->sku &= ~IWL_SKU_A;
4828 printk(KERN_INFO DRV_NAME
4829 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4830 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4831 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4833 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4834 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4835 &priv->bands[IEEE80211_BAND_2GHZ];
4836 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4837 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4838 &priv->bands[IEEE80211_BAND_5GHZ];
4840 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4846 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4848 void iwl4965_free_geos(struct iwl_priv *priv)
4850 kfree(priv->ieee_channels);
4851 kfree(priv->ieee_rates);
4852 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4855 /******************************************************************************
4857 * uCode download functions
4859 ******************************************************************************/
4861 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4863 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4864 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4865 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4866 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4867 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4868 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4872 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4873 * looking at all data.
4875 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
4883 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4885 rc = iwl_grab_nic_access(priv);
4889 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
4892 for (; len > 0; len -= sizeof(u32), image++) {
4893 /* read data comes through single port, auto-incr addr */
4894 /* NOTE: Use the debugless read so we don't flood kernel log
4895 * if IWL_DL_IO is set */
4896 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4897 if (val != le32_to_cpu(*image)) {
4898 IWL_ERROR("uCode INST section is invalid at "
4899 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4900 save_len - len, val, le32_to_cpu(*image));
4908 iwl_release_nic_access(priv);
4912 ("ucode image in INSTRUCTION memory is good\n");
4919 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4920 * using sample data 100 bytes apart. If these sample points are good,
4921 * it's a pretty good bet that everything between them is good, too.
4923 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4930 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4932 rc = iwl_grab_nic_access(priv);
4936 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4937 /* read data comes through single port, auto-incr addr */
4938 /* NOTE: Use the debugless read so we don't flood kernel log
4939 * if IWL_DL_IO is set */
4940 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4941 i + RTC_INST_LOWER_BOUND);
4942 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4943 if (val != le32_to_cpu(*image)) {
4944 #if 0 /* Enable this if you want to see details */
4945 IWL_ERROR("uCode INST section is invalid at "
4946 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4956 iwl_release_nic_access(priv);
4963 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
4964 * and verify its contents
4966 static int iwl4965_verify_ucode(struct iwl_priv *priv)
4973 image = (__le32 *)priv->ucode_boot.v_addr;
4974 len = priv->ucode_boot.len;
4975 rc = iwl4965_verify_inst_sparse(priv, image, len);
4977 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4981 /* Try initialize */
4982 image = (__le32 *)priv->ucode_init.v_addr;
4983 len = priv->ucode_init.len;
4984 rc = iwl4965_verify_inst_sparse(priv, image, len);
4986 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4990 /* Try runtime/protocol */
4991 image = (__le32 *)priv->ucode_code.v_addr;
4992 len = priv->ucode_code.len;
4993 rc = iwl4965_verify_inst_sparse(priv, image, len);
4995 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4999 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5001 /* Since nothing seems to match, show first several data entries in
5002 * instruction SRAM, so maybe visual inspection will give a clue.
5003 * Selection of bootstrap image (vs. other images) is arbitrary. */
5004 image = (__le32 *)priv->ucode_boot.v_addr;
5005 len = priv->ucode_boot.len;
5006 rc = iwl4965_verify_inst_full(priv, image, len);
5011 static void iwl4965_nic_start(struct iwl_priv *priv)
5013 /* Remove all resets to allow NIC to operate */
5014 iwl_write32(priv, CSR_RESET, 0);
5019 * iwl4965_read_ucode - Read uCode images from disk file.
5021 * Copy into buffers for card to fetch via bus-mastering
5023 static int iwl4965_read_ucode(struct iwl_priv *priv)
5025 struct iwl4965_ucode *ucode;
5027 const struct firmware *ucode_raw;
5028 const char *name = priv->cfg->fw_name;
5031 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5033 /* Ask kernel firmware_class module to get the boot firmware off disk.
5034 * request_firmware() is synchronous, file is in memory on return. */
5035 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5037 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5042 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5043 name, ucode_raw->size);
5045 /* Make sure that we got at least our header! */
5046 if (ucode_raw->size < sizeof(*ucode)) {
5047 IWL_ERROR("File size way too small!\n");
5052 /* Data from ucode file: header followed by uCode images */
5053 ucode = (void *)ucode_raw->data;
5055 ver = le32_to_cpu(ucode->ver);
5056 inst_size = le32_to_cpu(ucode->inst_size);
5057 data_size = le32_to_cpu(ucode->data_size);
5058 init_size = le32_to_cpu(ucode->init_size);
5059 init_data_size = le32_to_cpu(ucode->init_data_size);
5060 boot_size = le32_to_cpu(ucode->boot_size);
5062 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5063 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5065 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5067 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5069 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5071 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5074 /* Verify size of file vs. image size info in file's header */
5075 if (ucode_raw->size < sizeof(*ucode) +
5076 inst_size + data_size + init_size +
5077 init_data_size + boot_size) {
5079 IWL_DEBUG_INFO("uCode file size %d too small\n",
5080 (int)ucode_raw->size);
5085 /* Verify that uCode images will fit in card's SRAM */
5086 if (inst_size > IWL_MAX_INST_SIZE) {
5087 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5093 if (data_size > IWL_MAX_DATA_SIZE) {
5094 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5099 if (init_size > IWL_MAX_INST_SIZE) {
5101 ("uCode init instr len %d too large to fit in\n",
5106 if (init_data_size > IWL_MAX_DATA_SIZE) {
5108 ("uCode init data len %d too large to fit in\n",
5113 if (boot_size > IWL_MAX_BSM_SIZE) {
5115 ("uCode boot instr len %d too large to fit in\n",
5121 /* Allocate ucode buffers for card's bus-master loading ... */
5123 /* Runtime instructions and 2 copies of data:
5124 * 1) unmodified from disk
5125 * 2) backup cache for save/restore during power-downs */
5126 priv->ucode_code.len = inst_size;
5127 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5129 priv->ucode_data.len = data_size;
5130 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5132 priv->ucode_data_backup.len = data_size;
5133 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5135 /* Initialization instructions and data */
5136 if (init_size && init_data_size) {
5137 priv->ucode_init.len = init_size;
5138 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5140 priv->ucode_init_data.len = init_data_size;
5141 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5143 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5147 /* Bootstrap (instructions only, no data) */
5149 priv->ucode_boot.len = boot_size;
5150 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5152 if (!priv->ucode_boot.v_addr)
5156 /* Copy images into buffers for card's bus-master reads ... */
5158 /* Runtime instructions (first block of data in file) */
5159 src = &ucode->data[0];
5160 len = priv->ucode_code.len;
5161 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5162 memcpy(priv->ucode_code.v_addr, src, len);
5163 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5164 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5166 /* Runtime data (2nd block)
5167 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
5168 src = &ucode->data[inst_size];
5169 len = priv->ucode_data.len;
5170 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5171 memcpy(priv->ucode_data.v_addr, src, len);
5172 memcpy(priv->ucode_data_backup.v_addr, src, len);
5174 /* Initialization instructions (3rd block) */
5176 src = &ucode->data[inst_size + data_size];
5177 len = priv->ucode_init.len;
5178 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5180 memcpy(priv->ucode_init.v_addr, src, len);
5183 /* Initialization data (4th block) */
5184 if (init_data_size) {
5185 src = &ucode->data[inst_size + data_size + init_size];
5186 len = priv->ucode_init_data.len;
5187 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5189 memcpy(priv->ucode_init_data.v_addr, src, len);
5192 /* Bootstrap instructions (5th block) */
5193 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5194 len = priv->ucode_boot.len;
5195 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5196 memcpy(priv->ucode_boot.v_addr, src, len);
5198 /* We have our copies now, allow OS release its copies */
5199 release_firmware(ucode_raw);
5203 IWL_ERROR("failed to allocate pci memory\n");
5205 iwl4965_dealloc_ucode_pci(priv);
5208 release_firmware(ucode_raw);
5216 * iwl4965_set_ucode_ptrs - Set uCode address location
5218 * Tell initialization uCode where to find runtime uCode.
5220 * BSM registers initially contain pointers to initialization uCode.
5221 * We need to replace them to load runtime uCode inst and data,
5222 * and to save runtime data when powering down.
5224 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5229 unsigned long flags;
5231 /* bits 35:4 for 4965 */
5232 pinst = priv->ucode_code.p_addr >> 4;
5233 pdata = priv->ucode_data_backup.p_addr >> 4;
5235 spin_lock_irqsave(&priv->lock, flags);
5236 rc = iwl_grab_nic_access(priv);
5238 spin_unlock_irqrestore(&priv->lock, flags);
5242 /* Tell bootstrap uCode where to find image to load */
5243 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5244 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5245 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5246 priv->ucode_data.len);
5248 /* Inst bytecount must be last to set up, bit 31 signals uCode
5249 * that all new ptr/size info is in place */
5250 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5251 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5253 iwl_release_nic_access(priv);
5255 spin_unlock_irqrestore(&priv->lock, flags);
5257 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5263 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5265 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5267 * The 4965 "initialize" ALIVE reply contains calibration data for:
5268 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5269 * (3945 does not contain this data).
5271 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5273 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5275 /* Check alive response for "valid" sign from uCode */
5276 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5277 /* We had an error bringing up the hardware, so take it
5278 * all the way back down so we can try again */
5279 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5283 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5284 * This is a paranoid check, because we would not have gotten the
5285 * "initialize" alive if code weren't properly loaded. */
5286 if (iwl4965_verify_ucode(priv)) {
5287 /* Runtime instruction load was bad;
5288 * take it all the way back down so we can try again */
5289 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5293 /* Calculate temperature */
5294 priv->temperature = iwl4965_get_temperature(priv);
5296 /* Send pointers to protocol/runtime uCode image ... init code will
5297 * load and launch runtime uCode, which will send us another "Alive"
5299 IWL_DEBUG_INFO("Initialization Alive received.\n");
5300 if (iwl4965_set_ucode_ptrs(priv)) {
5301 /* Runtime instruction load won't happen;
5302 * take it all the way back down so we can try again */
5303 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5309 queue_work(priv->workqueue, &priv->restart);
5314 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5315 * from protocol/runtime uCode (initialization uCode's
5316 * Alive gets handled by iwl4965_init_alive_start()).
5318 static void iwl4965_alive_start(struct iwl_priv *priv)
5322 IWL_DEBUG_INFO("Runtime Alive received.\n");
5324 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5325 /* We had an error bringing up the hardware, so take it
5326 * all the way back down so we can try again */
5327 IWL_DEBUG_INFO("Alive failed.\n");
5331 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5332 * This is a paranoid check, because we would not have gotten the
5333 * "runtime" alive if code weren't properly loaded. */
5334 if (iwl4965_verify_ucode(priv)) {
5335 /* Runtime instruction load was bad;
5336 * take it all the way back down so we can try again */
5337 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5341 iwlcore_clear_stations_table(priv);
5343 ret = priv->cfg->ops->lib->alive_notify(priv);
5345 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5350 /* After the ALIVE response, we can send host commands to 4965 uCode */
5351 set_bit(STATUS_ALIVE, &priv->status);
5353 /* Clear out the uCode error bit if it is set */
5354 clear_bit(STATUS_FW_ERROR, &priv->status);
5356 if (iwl_is_rfkill(priv))
5359 ieee80211_start_queues(priv->hw);
5361 priv->active_rate = priv->rates_mask;
5362 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5364 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5366 if (iwl_is_associated(priv)) {
5367 struct iwl4965_rxon_cmd *active_rxon =
5368 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5370 memcpy(&priv->staging_rxon, &priv->active_rxon,
5371 sizeof(priv->staging_rxon));
5372 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5374 /* Initialize our rx_config data */
5375 iwl4965_connection_init_rx_config(priv);
5376 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5379 /* Configure Bluetooth device coexistence support */
5380 iwl4965_send_bt_config(priv);
5382 /* Configure the adapter for unassociated operation */
5383 iwl4965_commit_rxon(priv);
5385 /* At this point, the NIC is initialized and operational */
5386 priv->notif_missed_beacons = 0;
5388 iwl4965_rf_kill_ct_config(priv);
5390 iwl_leds_register(priv);
5392 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5393 set_bit(STATUS_READY, &priv->status);
5394 wake_up_interruptible(&priv->wait_command_queue);
5396 if (priv->error_recovering)
5397 iwl4965_error_recovery(priv);
5399 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5400 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5404 queue_work(priv->workqueue, &priv->restart);
5407 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5409 static void __iwl4965_down(struct iwl_priv *priv)
5411 unsigned long flags;
5412 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5413 struct ieee80211_conf *conf = NULL;
5415 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5417 conf = ieee80211_get_hw_conf(priv->hw);
5420 set_bit(STATUS_EXIT_PENDING, &priv->status);
5422 iwl_leds_unregister(priv);
5424 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5426 iwlcore_clear_stations_table(priv);
5428 /* Unblock any waiting calls */
5429 wake_up_interruptible_all(&priv->wait_command_queue);
5431 /* Wipe out the EXIT_PENDING status bit if we are not actually
5432 * exiting the module */
5434 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5436 /* stop and reset the on-board processor */
5437 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5439 /* tell the device to stop sending interrupts */
5440 spin_lock_irqsave(&priv->lock, flags);
5441 iwl4965_disable_interrupts(priv);
5442 spin_unlock_irqrestore(&priv->lock, flags);
5443 iwl_synchronize_irq(priv);
5445 if (priv->mac80211_registered)
5446 ieee80211_stop_queues(priv->hw);
5448 /* If we have not previously called iwl4965_init() then
5449 * clear all bits but the RF Kill and SUSPEND bits and return */
5450 if (!iwl_is_init(priv)) {
5451 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5453 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5455 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5456 STATUS_GEO_CONFIGURED |
5457 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5462 /* ...otherwise clear out all the status bits but the RF Kill and
5463 * SUSPEND bits and continue taking the NIC down. */
5464 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5466 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5468 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5469 STATUS_GEO_CONFIGURED |
5470 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5472 test_bit(STATUS_FW_ERROR, &priv->status) <<
5475 spin_lock_irqsave(&priv->lock, flags);
5476 iwl_clear_bit(priv, CSR_GP_CNTRL,
5477 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5478 spin_unlock_irqrestore(&priv->lock, flags);
5480 iwl4965_hw_txq_ctx_stop(priv);
5481 iwl4965_hw_rxq_stop(priv);
5483 spin_lock_irqsave(&priv->lock, flags);
5484 if (!iwl_grab_nic_access(priv)) {
5485 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5486 APMG_CLK_VAL_DMA_CLK_RQT);
5487 iwl_release_nic_access(priv);
5489 spin_unlock_irqrestore(&priv->lock, flags);
5493 iwl4965_hw_nic_stop_master(priv);
5494 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5495 iwl4965_hw_nic_reset(priv);
5498 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5500 if (priv->ibss_beacon)
5501 dev_kfree_skb(priv->ibss_beacon);
5502 priv->ibss_beacon = NULL;
5504 /* clear out any free frames */
5505 iwl4965_clear_free_frames(priv);
5508 static void iwl4965_down(struct iwl_priv *priv)
5510 mutex_lock(&priv->mutex);
5511 __iwl4965_down(priv);
5512 mutex_unlock(&priv->mutex);
5514 iwl4965_cancel_deferred_work(priv);
5517 #define MAX_HW_RESTARTS 5
5519 static int __iwl4965_up(struct iwl_priv *priv)
5524 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5525 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5529 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5530 IWL_WARNING("Radio disabled by SW RF kill (module "
5532 iwl_rfkill_set_hw_state(priv);
5536 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5537 IWL_ERROR("ucode not available for device bringup\n");
5541 /* If platform's RF_KILL switch is NOT set to KILL */
5542 if (iwl_read32(priv, CSR_GP_CNTRL) &
5543 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5544 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5546 set_bit(STATUS_RF_KILL_HW, &priv->status);
5547 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5548 iwl_rfkill_set_hw_state(priv);
5549 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5554 iwl_rfkill_set_hw_state(priv);
5555 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5557 ret = priv->cfg->ops->lib->hw_nic_init(priv);
5559 IWL_ERROR("Unable to init nic\n");
5563 /* make sure rfkill handshake bits are cleared */
5564 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5565 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5566 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5568 /* clear (again), then enable host interrupts */
5569 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5570 iwl4965_enable_interrupts(priv);
5572 /* really make sure rfkill handshake bits are cleared */
5573 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5574 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5576 /* Copy original ucode data image from disk into backup cache.
5577 * This will be used to initialize the on-board processor's
5578 * data SRAM for a clean start when the runtime program first loads. */
5579 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5580 priv->ucode_data.len);
5582 /* We return success when we resume from suspend and rf_kill is on. */
5583 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5586 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5588 iwlcore_clear_stations_table(priv);
5590 /* load bootstrap state machine,
5591 * load bootstrap program into processor's memory,
5592 * prepare to load the "initialize" uCode */
5593 ret = priv->cfg->ops->lib->load_ucode(priv);
5596 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5600 /* start card; "initialize" will load runtime ucode */
5601 iwl4965_nic_start(priv);
5603 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5608 set_bit(STATUS_EXIT_PENDING, &priv->status);
5609 __iwl4965_down(priv);
5611 /* tried to restart and config the device for as long as our
5612 * patience could withstand */
5613 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5618 /*****************************************************************************
5620 * Workqueue callbacks
5622 *****************************************************************************/
5624 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5626 struct iwl_priv *priv =
5627 container_of(data, struct iwl_priv, init_alive_start.work);
5629 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5632 mutex_lock(&priv->mutex);
5633 iwl4965_init_alive_start(priv);
5634 mutex_unlock(&priv->mutex);
5637 static void iwl4965_bg_alive_start(struct work_struct *data)
5639 struct iwl_priv *priv =
5640 container_of(data, struct iwl_priv, alive_start.work);
5642 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5645 mutex_lock(&priv->mutex);
5646 iwl4965_alive_start(priv);
5647 mutex_unlock(&priv->mutex);
5650 static void iwl4965_bg_rf_kill(struct work_struct *work)
5652 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5654 wake_up_interruptible(&priv->wait_command_queue);
5656 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5659 mutex_lock(&priv->mutex);
5661 if (!iwl_is_rfkill(priv)) {
5662 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5663 "HW and/or SW RF Kill no longer active, restarting "
5665 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5666 queue_work(priv->workqueue, &priv->restart);
5668 /* make sure mac80211 stop sending Tx frame */
5669 if (priv->mac80211_registered)
5670 ieee80211_stop_queues(priv->hw);
5672 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5673 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5674 "disabled by SW switch\n");
5676 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5677 "Kill switch must be turned off for "
5678 "wireless networking to work.\n");
5680 iwl_rfkill_set_hw_state(priv);
5682 mutex_unlock(&priv->mutex);
5685 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5687 static void iwl4965_bg_scan_check(struct work_struct *data)
5689 struct iwl_priv *priv =
5690 container_of(data, struct iwl_priv, scan_check.work);
5692 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5695 mutex_lock(&priv->mutex);
5696 if (test_bit(STATUS_SCANNING, &priv->status) ||
5697 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5698 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5699 "Scan completion watchdog resetting adapter (%dms)\n",
5700 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5702 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5703 iwl4965_send_scan_abort(priv);
5705 mutex_unlock(&priv->mutex);
5708 static void iwl4965_bg_request_scan(struct work_struct *data)
5710 struct iwl_priv *priv =
5711 container_of(data, struct iwl_priv, request_scan);
5712 struct iwl_host_cmd cmd = {
5713 .id = REPLY_SCAN_CMD,
5714 .len = sizeof(struct iwl4965_scan_cmd),
5715 .meta.flags = CMD_SIZE_HUGE,
5717 struct iwl4965_scan_cmd *scan;
5718 struct ieee80211_conf *conf = NULL;
5720 enum ieee80211_band band;
5724 conf = ieee80211_get_hw_conf(priv->hw);
5726 mutex_lock(&priv->mutex);
5728 if (!iwl_is_ready(priv)) {
5729 IWL_WARNING("request scan called when driver not ready.\n");
5733 /* Make sure the scan wasn't cancelled before this queued work
5734 * was given the chance to run... */
5735 if (!test_bit(STATUS_SCANNING, &priv->status))
5738 /* This should never be called or scheduled if there is currently
5739 * a scan active in the hardware. */
5740 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5741 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5742 "Ignoring second request.\n");
5747 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5748 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5752 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5753 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5757 if (iwl_is_rfkill(priv)) {
5758 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5762 if (!test_bit(STATUS_READY, &priv->status)) {
5763 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5767 if (!priv->scan_bands) {
5768 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5773 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5774 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5781 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5783 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5784 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5786 if (iwl_is_associated(priv)) {
5789 u32 suspend_time = 100;
5790 u32 scan_suspend_time = 100;
5791 unsigned long flags;
5793 IWL_DEBUG_INFO("Scanning while associated...\n");
5795 spin_lock_irqsave(&priv->lock, flags);
5796 interval = priv->beacon_int;
5797 spin_unlock_irqrestore(&priv->lock, flags);
5799 scan->suspend_time = 0;
5800 scan->max_out_time = cpu_to_le32(200 * 1024);
5802 interval = suspend_time;
5804 extra = (suspend_time / interval) << 22;
5805 scan_suspend_time = (extra |
5806 ((suspend_time % interval) * 1024));
5807 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5808 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5809 scan_suspend_time, interval);
5812 /* We should add the ability for user to lock to PASSIVE ONLY */
5813 if (priv->one_direct_scan) {
5815 ("Kicking off one direct scan for '%s'\n",
5816 iwl4965_escape_essid(priv->direct_ssid,
5817 priv->direct_ssid_len));
5818 scan->direct_scan[0].id = WLAN_EID_SSID;
5819 scan->direct_scan[0].len = priv->direct_ssid_len;
5820 memcpy(scan->direct_scan[0].ssid,
5821 priv->direct_ssid, priv->direct_ssid_len);
5823 } else if (!iwl_is_associated(priv) && priv->essid_len) {
5825 ("Kicking off one direct scan for '%s' when not associated\n",
5826 iwl4965_escape_essid(priv->essid, priv->essid_len));
5827 scan->direct_scan[0].id = WLAN_EID_SSID;
5828 scan->direct_scan[0].len = priv->essid_len;
5829 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
5832 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5836 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5837 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5838 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5841 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
5842 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5843 scan->tx_cmd.rate_n_flags =
5844 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5845 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5847 scan->good_CRC_th = 0;
5848 band = IEEE80211_BAND_2GHZ;
5849 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
5850 scan->tx_cmd.rate_n_flags =
5851 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5852 RATE_MCS_ANT_B_MSK);
5853 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5854 band = IEEE80211_BAND_5GHZ;
5856 IWL_WARNING("Invalid scan band count\n");
5860 /* We don't build a direct scan probe request; the uCode will do
5861 * that based on the direct_mask added to each channel entry */
5862 cmd_len = iwl4965_fill_probe_req(priv, band,
5863 (struct ieee80211_mgmt *)scan->data,
5864 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5866 scan->tx_cmd.len = cpu_to_le16(cmd_len);
5867 /* select Rx chains */
5869 /* Force use of chains B and C (0x6) for scan Rx.
5870 * Avoid A (0x1) because of its off-channel reception on A-band.
5871 * MIMO is not used here, but value is required to make uCode happy. */
5872 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5873 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5874 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5875 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5877 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5878 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5881 scan->channel_count =
5882 iwl4965_get_channels_for_scan(
5883 priv, band, 1, /* active */
5885 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5887 scan->channel_count =
5888 iwl4965_get_channels_for_scan(
5889 priv, band, 0, /* passive */
5891 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5893 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5894 scan->channel_count * sizeof(struct iwl4965_scan_channel);
5896 scan->len = cpu_to_le16(cmd.len);
5898 set_bit(STATUS_SCAN_HW, &priv->status);
5899 ret = iwl_send_cmd_sync(priv, &cmd);
5903 queue_delayed_work(priv->workqueue, &priv->scan_check,
5904 IWL_SCAN_CHECK_WATCHDOG);
5906 mutex_unlock(&priv->mutex);
5910 /* inform mac80211 scan aborted */
5911 queue_work(priv->workqueue, &priv->scan_completed);
5912 mutex_unlock(&priv->mutex);
5915 static void iwl4965_bg_up(struct work_struct *data)
5917 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5919 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5922 mutex_lock(&priv->mutex);
5924 mutex_unlock(&priv->mutex);
5927 static void iwl4965_bg_restart(struct work_struct *data)
5929 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5931 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5935 queue_work(priv->workqueue, &priv->up);
5938 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5940 struct iwl_priv *priv =
5941 container_of(data, struct iwl_priv, rx_replenish);
5943 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5946 mutex_lock(&priv->mutex);
5947 iwl4965_rx_replenish(priv);
5948 mutex_unlock(&priv->mutex);
5951 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5953 static void iwl4965_post_associate(struct iwl_priv *priv)
5955 struct ieee80211_conf *conf = NULL;
5957 DECLARE_MAC_BUF(mac);
5959 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
5960 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
5964 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5966 print_mac(mac, priv->active_rxon.bssid_addr));
5969 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5973 if (!priv->vif || !priv->is_open)
5976 iwl4965_scan_cancel_timeout(priv, 200);
5978 conf = ieee80211_get_hw_conf(priv->hw);
5980 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5981 iwl4965_commit_rxon(priv);
5983 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
5984 iwl4965_setup_rxon_timing(priv);
5985 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5986 sizeof(priv->rxon_timing), &priv->rxon_timing);
5988 IWL_WARNING("REPLY_RXON_TIMING failed - "
5989 "Attempting to continue.\n");
5991 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5993 #ifdef CONFIG_IWL4965_HT
5994 if (priv->current_ht_config.is_ht)
5995 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
5996 #endif /* CONFIG_IWL4965_HT*/
5997 iwl4965_set_rxon_chain(priv);
5998 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6000 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6001 priv->assoc_id, priv->beacon_int);
6003 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6004 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6006 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6008 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6009 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6010 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6012 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6014 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6015 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6019 iwl4965_commit_rxon(priv);
6021 switch (priv->iw_mode) {
6022 case IEEE80211_IF_TYPE_STA:
6023 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6026 case IEEE80211_IF_TYPE_IBSS:
6028 /* clear out the station table */
6029 iwlcore_clear_stations_table(priv);
6031 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6032 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6033 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6034 iwl4965_send_beacon_cmd(priv);
6039 IWL_ERROR("%s Should not be called in %d mode\n",
6040 __FUNCTION__, priv->iw_mode);
6044 iwl4965_sequence_reset(priv);
6046 #ifdef CONFIG_IWL4965_SENSITIVITY
6047 /* Enable Rx differential gain and sensitivity calibrations */
6048 iwl4965_chain_noise_reset(priv);
6049 priv->start_calib = 1;
6050 #endif /* CONFIG_IWL4965_SENSITIVITY */
6052 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6053 priv->assoc_station_added = 1;
6055 iwl4965_activate_qos(priv, 0);
6057 /* we have just associated, don't start scan too early */
6058 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6062 static void iwl4965_bg_post_associate(struct work_struct *data)
6064 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6065 post_associate.work);
6067 mutex_lock(&priv->mutex);
6068 iwl4965_post_associate(priv);
6069 mutex_unlock(&priv->mutex);
6073 static void iwl4965_bg_abort_scan(struct work_struct *work)
6075 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6077 if (!iwl_is_ready(priv))
6080 mutex_lock(&priv->mutex);
6082 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6083 iwl4965_send_scan_abort(priv);
6085 mutex_unlock(&priv->mutex);
6088 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6090 static void iwl4965_bg_scan_completed(struct work_struct *work)
6092 struct iwl_priv *priv =
6093 container_of(work, struct iwl_priv, scan_completed);
6095 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6097 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6100 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6101 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6103 ieee80211_scan_completed(priv->hw);
6105 /* Since setting the TXPOWER may have been deferred while
6106 * performing the scan, fire one off */
6107 mutex_lock(&priv->mutex);
6108 iwl4965_hw_reg_send_txpower(priv);
6109 mutex_unlock(&priv->mutex);
6112 /*****************************************************************************
6114 * mac80211 entry point functions
6116 *****************************************************************************/
6118 #define UCODE_READY_TIMEOUT (2 * HZ)
6120 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6122 struct iwl_priv *priv = hw->priv;
6125 IWL_DEBUG_MAC80211("enter\n");
6127 if (pci_enable_device(priv->pci_dev)) {
6128 IWL_ERROR("Fail to pci_enable_device\n");
6131 pci_restore_state(priv->pci_dev);
6132 pci_enable_msi(priv->pci_dev);
6134 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6137 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6138 goto out_disable_msi;
6141 /* we should be verifying the device is ready to be opened */
6142 mutex_lock(&priv->mutex);
6144 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6145 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6146 * ucode filename and max sizes are card-specific. */
6148 if (!priv->ucode_code.len) {
6149 ret = iwl4965_read_ucode(priv);
6151 IWL_ERROR("Could not read microcode: %d\n", ret);
6152 mutex_unlock(&priv->mutex);
6153 goto out_release_irq;
6157 ret = __iwl4965_up(priv);
6159 mutex_unlock(&priv->mutex);
6162 goto out_release_irq;
6164 IWL_DEBUG_INFO("Start UP work done.\n");
6166 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6169 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6170 * mac80211 will not be run successfully. */
6171 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6172 test_bit(STATUS_READY, &priv->status),
6173 UCODE_READY_TIMEOUT);
6175 if (!test_bit(STATUS_READY, &priv->status)) {
6176 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6177 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6179 goto out_release_irq;
6184 IWL_DEBUG_MAC80211("leave\n");
6188 free_irq(priv->pci_dev->irq, priv);
6190 pci_disable_msi(priv->pci_dev);
6191 pci_disable_device(priv->pci_dev);
6193 IWL_DEBUG_MAC80211("leave - failed\n");
6197 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6199 struct iwl_priv *priv = hw->priv;
6201 IWL_DEBUG_MAC80211("enter\n");
6203 if (!priv->is_open) {
6204 IWL_DEBUG_MAC80211("leave - skip\n");
6210 if (iwl_is_ready_rf(priv)) {
6211 /* stop mac, cancel any scan request and clear
6212 * RXON_FILTER_ASSOC_MSK BIT
6214 mutex_lock(&priv->mutex);
6215 iwl4965_scan_cancel_timeout(priv, 100);
6216 cancel_delayed_work(&priv->post_associate);
6217 mutex_unlock(&priv->mutex);
6222 flush_workqueue(priv->workqueue);
6223 free_irq(priv->pci_dev->irq, priv);
6224 pci_disable_msi(priv->pci_dev);
6225 pci_save_state(priv->pci_dev);
6226 pci_disable_device(priv->pci_dev);
6228 IWL_DEBUG_MAC80211("leave\n");
6231 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6232 struct ieee80211_tx_control *ctl)
6234 struct iwl_priv *priv = hw->priv;
6236 IWL_DEBUG_MAC80211("enter\n");
6238 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6239 IWL_DEBUG_MAC80211("leave - monitor\n");
6243 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6244 ctl->tx_rate->bitrate);
6246 if (iwl4965_tx_skb(priv, skb, ctl))
6247 dev_kfree_skb_any(skb);
6249 IWL_DEBUG_MAC80211("leave\n");
6253 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6254 struct ieee80211_if_init_conf *conf)
6256 struct iwl_priv *priv = hw->priv;
6257 unsigned long flags;
6258 DECLARE_MAC_BUF(mac);
6260 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6263 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6267 spin_lock_irqsave(&priv->lock, flags);
6268 priv->vif = conf->vif;
6270 spin_unlock_irqrestore(&priv->lock, flags);
6272 mutex_lock(&priv->mutex);
6274 if (conf->mac_addr) {
6275 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6276 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6279 if (iwl_is_ready(priv))
6280 iwl4965_set_mode(priv, conf->type);
6282 mutex_unlock(&priv->mutex);
6284 IWL_DEBUG_MAC80211("leave\n");
6289 * iwl4965_mac_config - mac80211 config callback
6291 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6292 * be set inappropriately and the driver currently sets the hardware up to
6293 * use it whenever needed.
6295 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6297 struct iwl_priv *priv = hw->priv;
6298 const struct iwl_channel_info *ch_info;
6299 unsigned long flags;
6302 mutex_lock(&priv->mutex);
6303 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6305 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6307 if (!iwl_is_ready(priv)) {
6308 IWL_DEBUG_MAC80211("leave - not ready\n");
6313 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6314 test_bit(STATUS_SCANNING, &priv->status))) {
6315 IWL_DEBUG_MAC80211("leave - scanning\n");
6316 set_bit(STATUS_CONF_PENDING, &priv->status);
6317 mutex_unlock(&priv->mutex);
6321 spin_lock_irqsave(&priv->lock, flags);
6323 ch_info = iwl_get_channel_info(priv, conf->channel->band,
6324 ieee80211_frequency_to_channel(conf->channel->center_freq));
6325 if (!is_channel_valid(ch_info)) {
6326 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6327 spin_unlock_irqrestore(&priv->lock, flags);
6332 #ifdef CONFIG_IWL4965_HT
6333 /* if we are switching from ht to 2.4 clear flags
6334 * from any ht related info since 2.4 does not
6336 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6337 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6338 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6341 priv->staging_rxon.flags = 0;
6342 #endif /* CONFIG_IWL4965_HT */
6344 iwlcore_set_rxon_channel(priv, conf->channel->band,
6345 ieee80211_frequency_to_channel(conf->channel->center_freq));
6347 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6349 /* The list of supported rates and rate mask can be different
6350 * for each band; since the band may have changed, reset
6351 * the rate mask to what mac80211 lists */
6352 iwl4965_set_rate(priv);
6354 spin_unlock_irqrestore(&priv->lock, flags);
6356 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6357 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6358 iwl4965_hw_channel_switch(priv, conf->channel);
6363 if (priv->cfg->ops->lib->radio_kill_sw)
6364 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6366 if (!conf->radio_enabled) {
6367 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6371 if (iwl_is_rfkill(priv)) {
6372 IWL_DEBUG_MAC80211("leave - RF kill\n");
6377 iwl4965_set_rate(priv);
6379 if (memcmp(&priv->active_rxon,
6380 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6381 iwl4965_commit_rxon(priv);
6383 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6385 IWL_DEBUG_MAC80211("leave\n");
6388 clear_bit(STATUS_CONF_PENDING, &priv->status);
6389 mutex_unlock(&priv->mutex);
6393 static void iwl4965_config_ap(struct iwl_priv *priv)
6397 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6400 /* The following should be done only at AP bring up */
6401 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6403 /* RXON - unassoc (to set timing command) */
6404 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6405 iwl4965_commit_rxon(priv);
6408 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6409 iwl4965_setup_rxon_timing(priv);
6410 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6411 sizeof(priv->rxon_timing), &priv->rxon_timing);
6413 IWL_WARNING("REPLY_RXON_TIMING failed - "
6414 "Attempting to continue.\n");
6416 iwl4965_set_rxon_chain(priv);
6418 /* FIXME: what should be the assoc_id for AP? */
6419 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6420 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6421 priv->staging_rxon.flags |=
6422 RXON_FLG_SHORT_PREAMBLE_MSK;
6424 priv->staging_rxon.flags &=
6425 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6427 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6428 if (priv->assoc_capability &
6429 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6430 priv->staging_rxon.flags |=
6431 RXON_FLG_SHORT_SLOT_MSK;
6433 priv->staging_rxon.flags &=
6434 ~RXON_FLG_SHORT_SLOT_MSK;
6436 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6437 priv->staging_rxon.flags &=
6438 ~RXON_FLG_SHORT_SLOT_MSK;
6440 /* restore RXON assoc */
6441 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6442 iwl4965_commit_rxon(priv);
6443 iwl4965_activate_qos(priv, 1);
6444 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6446 iwl4965_send_beacon_cmd(priv);
6448 /* FIXME - we need to add code here to detect a totally new
6449 * configuration, reset the AP, unassoc, rxon timing, assoc,
6450 * clear sta table, add BCAST sta... */
6453 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6454 struct ieee80211_vif *vif,
6455 struct ieee80211_if_conf *conf)
6457 struct iwl_priv *priv = hw->priv;
6458 DECLARE_MAC_BUF(mac);
6459 unsigned long flags;
6465 if (priv->vif != vif) {
6466 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6470 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6471 (!conf->beacon || !conf->ssid_len)) {
6473 ("Leaving in AP mode because HostAPD is not ready.\n");
6477 if (!iwl_is_alive(priv))
6480 mutex_lock(&priv->mutex);
6483 IWL_DEBUG_MAC80211("bssid: %s\n",
6484 print_mac(mac, conf->bssid));
6487 * very dubious code was here; the probe filtering flag is never set:
6489 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6490 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6493 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6495 conf->bssid = priv->mac_addr;
6496 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6497 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6498 print_mac(mac, conf->bssid));
6500 if (priv->ibss_beacon)
6501 dev_kfree_skb(priv->ibss_beacon);
6503 priv->ibss_beacon = conf->beacon;
6506 if (iwl_is_rfkill(priv))
6509 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6510 !is_multicast_ether_addr(conf->bssid)) {
6511 /* If there is currently a HW scan going on in the background
6512 * then we need to cancel it else the RXON below will fail. */
6513 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6514 IWL_WARNING("Aborted scan still in progress "
6516 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6517 mutex_unlock(&priv->mutex);
6520 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6522 /* TODO: Audit driver for usage of these members and see
6523 * if mac80211 deprecates them (priv->bssid looks like it
6524 * shouldn't be there, but I haven't scanned the IBSS code
6525 * to verify) - jpk */
6526 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6528 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6529 iwl4965_config_ap(priv);
6531 rc = iwl4965_commit_rxon(priv);
6532 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6533 iwl4965_rxon_add_station(
6534 priv, priv->active_rxon.bssid_addr, 1);
6538 iwl4965_scan_cancel_timeout(priv, 100);
6539 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6540 iwl4965_commit_rxon(priv);
6544 spin_lock_irqsave(&priv->lock, flags);
6545 if (!conf->ssid_len)
6546 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6548 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6550 priv->essid_len = conf->ssid_len;
6551 spin_unlock_irqrestore(&priv->lock, flags);
6553 IWL_DEBUG_MAC80211("leave\n");
6554 mutex_unlock(&priv->mutex);
6559 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6560 unsigned int changed_flags,
6561 unsigned int *total_flags,
6562 int mc_count, struct dev_addr_list *mc_list)
6566 * see also iwl4965_connection_init_rx_config
6571 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6572 struct ieee80211_if_init_conf *conf)
6574 struct iwl_priv *priv = hw->priv;
6576 IWL_DEBUG_MAC80211("enter\n");
6578 mutex_lock(&priv->mutex);
6580 if (iwl_is_ready_rf(priv)) {
6581 iwl4965_scan_cancel_timeout(priv, 100);
6582 cancel_delayed_work(&priv->post_associate);
6583 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6584 iwl4965_commit_rxon(priv);
6586 if (priv->vif == conf->vif) {
6588 memset(priv->bssid, 0, ETH_ALEN);
6589 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6590 priv->essid_len = 0;
6592 mutex_unlock(&priv->mutex);
6594 IWL_DEBUG_MAC80211("leave\n");
6599 #ifdef CONFIG_IWL4965_HT
6600 static void iwl4965_ht_conf(struct iwl_priv *priv,
6601 struct ieee80211_bss_conf *bss_conf)
6603 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6604 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6605 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6607 IWL_DEBUG_MAC80211("enter: \n");
6609 iwl_conf->is_ht = bss_conf->assoc_ht;
6611 if (!iwl_conf->is_ht)
6614 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6616 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6617 iwl_conf->sgf |= 0x1;
6618 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6619 iwl_conf->sgf |= 0x2;
6621 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6622 iwl_conf->max_amsdu_size =
6623 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6625 iwl_conf->supported_chan_width =
6626 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6627 iwl_conf->extension_chan_offset =
6628 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6629 /* If no above or below channel supplied disable FAT channel */
6630 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6631 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6632 iwl_conf->supported_chan_width = 0;
6634 iwl_conf->tx_mimo_ps_mode =
6635 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6636 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6638 iwl_conf->control_channel = ht_bss_conf->primary_channel;
6639 iwl_conf->tx_chan_width =
6640 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6641 iwl_conf->ht_protection =
6642 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6643 iwl_conf->non_GF_STA_present =
6644 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6646 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6647 IWL_DEBUG_MAC80211("leave\n");
6650 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6651 struct ieee80211_bss_conf *bss_conf)
6656 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6657 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6658 struct ieee80211_vif *vif,
6659 struct ieee80211_bss_conf *bss_conf,
6662 struct iwl_priv *priv = hw->priv;
6664 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6666 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6667 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6668 bss_conf->use_short_preamble);
6669 if (bss_conf->use_short_preamble)
6670 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6672 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6675 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6676 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6677 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6678 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6680 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6683 if (changes & BSS_CHANGED_HT) {
6684 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6685 iwl4965_ht_conf(priv, bss_conf);
6686 iwl4965_set_rxon_chain(priv);
6689 if (changes & BSS_CHANGED_ASSOC) {
6690 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6691 /* This should never happen as this function should
6692 * never be called from interrupt context. */
6693 if (WARN_ON_ONCE(in_interrupt()))
6695 if (bss_conf->assoc) {
6696 priv->assoc_id = bss_conf->aid;
6697 priv->beacon_int = bss_conf->beacon_int;
6698 priv->timestamp = bss_conf->timestamp;
6699 priv->assoc_capability = bss_conf->assoc_capability;
6700 priv->next_scan_jiffies = jiffies +
6701 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6702 mutex_lock(&priv->mutex);
6703 iwl4965_post_associate(priv);
6704 mutex_unlock(&priv->mutex);
6707 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6709 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6710 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6711 iwl_send_rxon_assoc(priv);
6716 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6719 unsigned long flags;
6720 struct iwl_priv *priv = hw->priv;
6722 IWL_DEBUG_MAC80211("enter\n");
6724 mutex_lock(&priv->mutex);
6725 spin_lock_irqsave(&priv->lock, flags);
6727 if (!iwl_is_ready_rf(priv)) {
6729 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6733 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
6735 IWL_ERROR("ERROR: APs don't scan\n");
6739 /* we don't schedule scan within next_scan_jiffies period */
6740 if (priv->next_scan_jiffies &&
6741 time_after(priv->next_scan_jiffies, jiffies)) {
6745 /* if we just finished scan ask for delay */
6746 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6747 IWL_DELAY_NEXT_SCAN, jiffies)) {
6752 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6753 iwl4965_escape_essid(ssid, len), (int)len);
6755 priv->one_direct_scan = 1;
6756 priv->direct_ssid_len = (u8)
6757 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6758 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6760 priv->one_direct_scan = 0;
6762 rc = iwl4965_scan_initiate(priv);
6764 IWL_DEBUG_MAC80211("leave\n");
6767 spin_unlock_irqrestore(&priv->lock, flags);
6768 mutex_unlock(&priv->mutex);
6773 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6774 struct ieee80211_key_conf *keyconf, const u8 *addr,
6775 u32 iv32, u16 *phase1key)
6777 struct iwl_priv *priv = hw->priv;
6778 u8 sta_id = IWL_INVALID_STATION;
6779 unsigned long flags;
6780 __le16 key_flags = 0;
6782 DECLARE_MAC_BUF(mac);
6784 IWL_DEBUG_MAC80211("enter\n");
6786 sta_id = iwl4965_hw_find_station(priv, addr);
6787 if (sta_id == IWL_INVALID_STATION) {
6788 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6789 print_mac(mac, addr));
6793 iwl4965_scan_cancel_timeout(priv, 100);
6795 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6796 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6797 key_flags &= ~STA_KEY_FLG_INVALID;
6799 if (sta_id == priv->hw_params.bcast_sta_id)
6800 key_flags |= STA_KEY_MULTICAST_MSK;
6802 spin_lock_irqsave(&priv->sta_lock, flags);
6804 priv->stations[sta_id].sta.key.key_flags = key_flags;
6805 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6807 for (i = 0; i < 5; i++)
6808 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6809 cpu_to_le16(phase1key[i]);
6811 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6812 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6814 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6816 spin_unlock_irqrestore(&priv->sta_lock, flags);
6818 IWL_DEBUG_MAC80211("leave\n");
6821 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6822 const u8 *local_addr, const u8 *addr,
6823 struct ieee80211_key_conf *key)
6825 struct iwl_priv *priv = hw->priv;
6826 DECLARE_MAC_BUF(mac);
6828 u8 sta_id = IWL_INVALID_STATION;
6829 u8 is_default_wep_key = 0;
6831 IWL_DEBUG_MAC80211("enter\n");
6833 if (priv->cfg->mod_params->sw_crypto) {
6834 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6838 if (is_zero_ether_addr(addr))
6839 /* only support pairwise keys */
6842 sta_id = iwl4965_hw_find_station(priv, addr);
6843 if (sta_id == IWL_INVALID_STATION) {
6844 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6845 print_mac(mac, addr));
6850 mutex_lock(&priv->mutex);
6851 iwl4965_scan_cancel_timeout(priv, 100);
6852 mutex_unlock(&priv->mutex);
6854 /* If we are getting WEP group key and we didn't receive any key mapping
6855 * so far, we are in legacy wep mode (group key only), otherwise we are
6857 * In legacy wep mode, we use another host command to the uCode */
6858 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6859 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6861 is_default_wep_key = !priv->key_mapping_key;
6863 is_default_wep_key = priv->default_wep_key;
6868 if (is_default_wep_key)
6869 ret = iwl_set_default_wep_key(priv, key);
6871 ret = iwl_set_dynamic_key(priv, key, sta_id);
6873 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6876 if (is_default_wep_key)
6877 ret = iwl_remove_default_wep_key(priv, key);
6879 ret = iwl_remove_dynamic_key(priv, sta_id);
6881 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6887 IWL_DEBUG_MAC80211("leave\n");
6892 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
6893 const struct ieee80211_tx_queue_params *params)
6895 struct iwl_priv *priv = hw->priv;
6896 unsigned long flags;
6899 IWL_DEBUG_MAC80211("enter\n");
6901 if (!iwl_is_ready_rf(priv)) {
6902 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6906 if (queue >= AC_NUM) {
6907 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6911 if (!priv->qos_data.qos_enable) {
6912 priv->qos_data.qos_active = 0;
6913 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6916 q = AC_NUM - 1 - queue;
6918 spin_lock_irqsave(&priv->lock, flags);
6920 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6921 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6922 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6923 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6924 cpu_to_le16((params->txop * 32));
6926 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6927 priv->qos_data.qos_active = 1;
6929 spin_unlock_irqrestore(&priv->lock, flags);
6931 mutex_lock(&priv->mutex);
6932 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6933 iwl4965_activate_qos(priv, 1);
6934 else if (priv->assoc_id && iwl_is_associated(priv))
6935 iwl4965_activate_qos(priv, 0);
6937 mutex_unlock(&priv->mutex);
6939 IWL_DEBUG_MAC80211("leave\n");
6943 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
6944 struct ieee80211_tx_queue_stats *stats)
6946 struct iwl_priv *priv = hw->priv;
6948 struct iwl4965_tx_queue *txq;
6949 struct iwl4965_queue *q;
6950 unsigned long flags;
6952 IWL_DEBUG_MAC80211("enter\n");
6954 if (!iwl_is_ready_rf(priv)) {
6955 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6959 spin_lock_irqsave(&priv->lock, flags);
6961 for (i = 0; i < AC_NUM; i++) {
6962 txq = &priv->txq[i];
6964 avail = iwl4965_queue_space(q);
6966 stats->data[i].len = q->n_window - avail;
6967 stats->data[i].limit = q->n_window - q->high_mark;
6968 stats->data[i].count = q->n_window;
6971 spin_unlock_irqrestore(&priv->lock, flags);
6973 IWL_DEBUG_MAC80211("leave\n");
6978 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
6979 struct ieee80211_low_level_stats *stats)
6981 IWL_DEBUG_MAC80211("enter\n");
6982 IWL_DEBUG_MAC80211("leave\n");
6987 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
6989 IWL_DEBUG_MAC80211("enter\n");
6990 IWL_DEBUG_MAC80211("leave\n");
6995 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
6997 struct iwl_priv *priv = hw->priv;
6998 unsigned long flags;
7000 mutex_lock(&priv->mutex);
7001 IWL_DEBUG_MAC80211("enter\n");
7003 priv->lq_mngr.lq_ready = 0;
7004 #ifdef CONFIG_IWL4965_HT
7005 spin_lock_irqsave(&priv->lock, flags);
7006 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7007 spin_unlock_irqrestore(&priv->lock, flags);
7008 #endif /* CONFIG_IWL4965_HT */
7010 iwlcore_reset_qos(priv);
7012 cancel_delayed_work(&priv->post_associate);
7014 spin_lock_irqsave(&priv->lock, flags);
7016 priv->assoc_capability = 0;
7017 priv->assoc_station_added = 0;
7019 /* new association get rid of ibss beacon skb */
7020 if (priv->ibss_beacon)
7021 dev_kfree_skb(priv->ibss_beacon);
7023 priv->ibss_beacon = NULL;
7025 priv->beacon_int = priv->hw->conf.beacon_int;
7026 priv->timestamp = 0;
7027 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7028 priv->beacon_int = 0;
7030 spin_unlock_irqrestore(&priv->lock, flags);
7032 if (!iwl_is_ready_rf(priv)) {
7033 IWL_DEBUG_MAC80211("leave - not ready\n");
7034 mutex_unlock(&priv->mutex);
7038 /* we are restarting association process
7039 * clear RXON_FILTER_ASSOC_MSK bit
7041 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7042 iwl4965_scan_cancel_timeout(priv, 100);
7043 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7044 iwl4965_commit_rxon(priv);
7047 /* Per mac80211.h: This is only used in IBSS mode... */
7048 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7050 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7051 mutex_unlock(&priv->mutex);
7055 iwl4965_set_rate(priv);
7057 mutex_unlock(&priv->mutex);
7059 IWL_DEBUG_MAC80211("leave\n");
7062 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7063 struct ieee80211_tx_control *control)
7065 struct iwl_priv *priv = hw->priv;
7066 unsigned long flags;
7068 mutex_lock(&priv->mutex);
7069 IWL_DEBUG_MAC80211("enter\n");
7071 if (!iwl_is_ready_rf(priv)) {
7072 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7073 mutex_unlock(&priv->mutex);
7077 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7078 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7079 mutex_unlock(&priv->mutex);
7083 spin_lock_irqsave(&priv->lock, flags);
7085 if (priv->ibss_beacon)
7086 dev_kfree_skb(priv->ibss_beacon);
7088 priv->ibss_beacon = skb;
7092 IWL_DEBUG_MAC80211("leave\n");
7093 spin_unlock_irqrestore(&priv->lock, flags);
7095 iwlcore_reset_qos(priv);
7097 queue_work(priv->workqueue, &priv->post_associate.work);
7099 mutex_unlock(&priv->mutex);
7104 /*****************************************************************************
7108 *****************************************************************************/
7110 #ifdef CONFIG_IWLWIFI_DEBUG
7113 * The following adds a new attribute to the sysfs representation
7114 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7115 * used for controlling the debug level.
7117 * See the level definitions in iwl for details.
7120 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7122 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7124 static ssize_t store_debug_level(struct device_driver *d,
7125 const char *buf, size_t count)
7127 char *p = (char *)buf;
7130 val = simple_strtoul(p, &p, 0);
7132 printk(KERN_INFO DRV_NAME
7133 ": %s is not in hex or decimal form.\n", buf);
7135 iwl_debug_level = val;
7137 return strnlen(buf, count);
7140 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7141 show_debug_level, store_debug_level);
7143 #endif /* CONFIG_IWLWIFI_DEBUG */
7146 static ssize_t show_temperature(struct device *d,
7147 struct device_attribute *attr, char *buf)
7149 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7151 if (!iwl_is_alive(priv))
7154 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7157 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7159 static ssize_t show_rs_window(struct device *d,
7160 struct device_attribute *attr,
7163 struct iwl_priv *priv = d->driver_data;
7164 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7166 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7168 static ssize_t show_tx_power(struct device *d,
7169 struct device_attribute *attr, char *buf)
7171 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7172 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7175 static ssize_t store_tx_power(struct device *d,
7176 struct device_attribute *attr,
7177 const char *buf, size_t count)
7179 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7180 char *p = (char *)buf;
7183 val = simple_strtoul(p, &p, 10);
7185 printk(KERN_INFO DRV_NAME
7186 ": %s is not in decimal form.\n", buf);
7188 iwl4965_hw_reg_set_txpower(priv, val);
7193 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7195 static ssize_t show_flags(struct device *d,
7196 struct device_attribute *attr, char *buf)
7198 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7200 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7203 static ssize_t store_flags(struct device *d,
7204 struct device_attribute *attr,
7205 const char *buf, size_t count)
7207 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7208 u32 flags = simple_strtoul(buf, NULL, 0);
7210 mutex_lock(&priv->mutex);
7211 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7212 /* Cancel any currently running scans... */
7213 if (iwl4965_scan_cancel_timeout(priv, 100))
7214 IWL_WARNING("Could not cancel scan.\n");
7216 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7218 priv->staging_rxon.flags = cpu_to_le32(flags);
7219 iwl4965_commit_rxon(priv);
7222 mutex_unlock(&priv->mutex);
7227 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7229 static ssize_t show_filter_flags(struct device *d,
7230 struct device_attribute *attr, char *buf)
7232 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7234 return sprintf(buf, "0x%04X\n",
7235 le32_to_cpu(priv->active_rxon.filter_flags));
7238 static ssize_t store_filter_flags(struct device *d,
7239 struct device_attribute *attr,
7240 const char *buf, size_t count)
7242 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7243 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7245 mutex_lock(&priv->mutex);
7246 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7247 /* Cancel any currently running scans... */
7248 if (iwl4965_scan_cancel_timeout(priv, 100))
7249 IWL_WARNING("Could not cancel scan.\n");
7251 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7252 "0x%04X\n", filter_flags);
7253 priv->staging_rxon.filter_flags =
7254 cpu_to_le32(filter_flags);
7255 iwl4965_commit_rxon(priv);
7258 mutex_unlock(&priv->mutex);
7263 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7264 store_filter_flags);
7266 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7268 static ssize_t show_measurement(struct device *d,
7269 struct device_attribute *attr, char *buf)
7271 struct iwl_priv *priv = dev_get_drvdata(d);
7272 struct iwl4965_spectrum_notification measure_report;
7273 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7274 u8 *data = (u8 *) & measure_report;
7275 unsigned long flags;
7277 spin_lock_irqsave(&priv->lock, flags);
7278 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7279 spin_unlock_irqrestore(&priv->lock, flags);
7282 memcpy(&measure_report, &priv->measure_report, size);
7283 priv->measurement_status = 0;
7284 spin_unlock_irqrestore(&priv->lock, flags);
7286 while (size && (PAGE_SIZE - len)) {
7287 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7288 PAGE_SIZE - len, 1);
7290 if (PAGE_SIZE - len)
7294 size -= min(size, 16U);
7300 static ssize_t store_measurement(struct device *d,
7301 struct device_attribute *attr,
7302 const char *buf, size_t count)
7304 struct iwl_priv *priv = dev_get_drvdata(d);
7305 struct ieee80211_measurement_params params = {
7306 .channel = le16_to_cpu(priv->active_rxon.channel),
7307 .start_time = cpu_to_le64(priv->last_tsf),
7308 .duration = cpu_to_le16(1),
7310 u8 type = IWL_MEASURE_BASIC;
7316 strncpy(buffer, buf, min(sizeof(buffer), count));
7317 channel = simple_strtoul(p, NULL, 0);
7319 params.channel = channel;
7322 while (*p && *p != ' ')
7325 type = simple_strtoul(p + 1, NULL, 0);
7328 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7329 "channel %d (for '%s')\n", type, params.channel, buf);
7330 iwl4965_get_measurement(priv, ¶ms, type);
7335 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7336 show_measurement, store_measurement);
7337 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7339 static ssize_t store_retry_rate(struct device *d,
7340 struct device_attribute *attr,
7341 const char *buf, size_t count)
7343 struct iwl_priv *priv = dev_get_drvdata(d);
7345 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7346 if (priv->retry_rate <= 0)
7347 priv->retry_rate = 1;
7352 static ssize_t show_retry_rate(struct device *d,
7353 struct device_attribute *attr, char *buf)
7355 struct iwl_priv *priv = dev_get_drvdata(d);
7356 return sprintf(buf, "%d", priv->retry_rate);
7359 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7362 static ssize_t store_power_level(struct device *d,
7363 struct device_attribute *attr,
7364 const char *buf, size_t count)
7366 struct iwl_priv *priv = dev_get_drvdata(d);
7370 mode = simple_strtoul(buf, NULL, 0);
7371 mutex_lock(&priv->mutex);
7373 if (!iwl_is_ready(priv)) {
7378 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7379 mode = IWL_POWER_AC;
7381 mode |= IWL_POWER_ENABLED;
7383 if (mode != priv->power_mode) {
7384 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7386 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7389 priv->power_mode = mode;
7395 mutex_unlock(&priv->mutex);
7399 #define MAX_WX_STRING 80
7401 /* Values are in microsecond */
7402 static const s32 timeout_duration[] = {
7409 static const s32 period_duration[] = {
7417 static ssize_t show_power_level(struct device *d,
7418 struct device_attribute *attr, char *buf)
7420 struct iwl_priv *priv = dev_get_drvdata(d);
7421 int level = IWL_POWER_LEVEL(priv->power_mode);
7424 p += sprintf(p, "%d ", level);
7426 case IWL_POWER_MODE_CAM:
7428 p += sprintf(p, "(AC)");
7430 case IWL_POWER_BATTERY:
7431 p += sprintf(p, "(BATTERY)");
7435 "(Timeout %dms, Period %dms)",
7436 timeout_duration[level - 1] / 1000,
7437 period_duration[level - 1] / 1000);
7440 if (!(priv->power_mode & IWL_POWER_ENABLED))
7441 p += sprintf(p, " OFF\n");
7443 p += sprintf(p, " \n");
7445 return (p - buf + 1);
7449 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7452 static ssize_t show_channels(struct device *d,
7453 struct device_attribute *attr, char *buf)
7455 /* all this shit doesn't belong into sysfs anyway */
7459 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7461 static ssize_t show_statistics(struct device *d,
7462 struct device_attribute *attr, char *buf)
7464 struct iwl_priv *priv = dev_get_drvdata(d);
7465 u32 size = sizeof(struct iwl4965_notif_statistics);
7466 u32 len = 0, ofs = 0;
7467 u8 *data = (u8 *) & priv->statistics;
7470 if (!iwl_is_alive(priv))
7473 mutex_lock(&priv->mutex);
7474 rc = iwl_send_statistics_request(priv, 0);
7475 mutex_unlock(&priv->mutex);
7479 "Error sending statistics request: 0x%08X\n", rc);
7483 while (size && (PAGE_SIZE - len)) {
7484 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7485 PAGE_SIZE - len, 1);
7487 if (PAGE_SIZE - len)
7491 size -= min(size, 16U);
7497 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7499 static ssize_t show_antenna(struct device *d,
7500 struct device_attribute *attr, char *buf)
7502 struct iwl_priv *priv = dev_get_drvdata(d);
7504 if (!iwl_is_alive(priv))
7507 return sprintf(buf, "%d\n", priv->antenna);
7510 static ssize_t store_antenna(struct device *d,
7511 struct device_attribute *attr,
7512 const char *buf, size_t count)
7515 struct iwl_priv *priv = dev_get_drvdata(d);
7520 if (sscanf(buf, "%1i", &ant) != 1) {
7521 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7525 if ((ant >= 0) && (ant <= 2)) {
7526 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7527 priv->antenna = (enum iwl4965_antenna)ant;
7529 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7535 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7537 static ssize_t show_status(struct device *d,
7538 struct device_attribute *attr, char *buf)
7540 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7541 if (!iwl_is_alive(priv))
7543 return sprintf(buf, "0x%08x\n", (int)priv->status);
7546 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7548 static ssize_t dump_error_log(struct device *d,
7549 struct device_attribute *attr,
7550 const char *buf, size_t count)
7552 char *p = (char *)buf;
7555 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7557 return strnlen(buf, count);
7560 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7562 static ssize_t dump_event_log(struct device *d,
7563 struct device_attribute *attr,
7564 const char *buf, size_t count)
7566 char *p = (char *)buf;
7569 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7571 return strnlen(buf, count);
7574 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7576 /*****************************************************************************
7578 * driver setup and teardown
7580 *****************************************************************************/
7582 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7584 priv->workqueue = create_workqueue(DRV_NAME);
7586 init_waitqueue_head(&priv->wait_command_queue);
7588 INIT_WORK(&priv->up, iwl4965_bg_up);
7589 INIT_WORK(&priv->restart, iwl4965_bg_restart);
7590 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7591 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7592 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7593 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7594 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7595 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7596 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7597 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7598 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7599 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7601 iwl4965_hw_setup_deferred_work(priv);
7603 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7604 iwl4965_irq_tasklet, (unsigned long)priv);
7607 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7609 iwl4965_hw_cancel_deferred_work(priv);
7611 cancel_delayed_work_sync(&priv->init_alive_start);
7612 cancel_delayed_work(&priv->scan_check);
7613 cancel_delayed_work(&priv->alive_start);
7614 cancel_delayed_work(&priv->post_associate);
7615 cancel_work_sync(&priv->beacon_update);
7618 static struct attribute *iwl4965_sysfs_entries[] = {
7619 &dev_attr_antenna.attr,
7620 &dev_attr_channels.attr,
7621 &dev_attr_dump_errors.attr,
7622 &dev_attr_dump_events.attr,
7623 &dev_attr_flags.attr,
7624 &dev_attr_filter_flags.attr,
7625 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7626 &dev_attr_measurement.attr,
7628 &dev_attr_power_level.attr,
7629 &dev_attr_retry_rate.attr,
7630 &dev_attr_rs_window.attr,
7631 &dev_attr_statistics.attr,
7632 &dev_attr_status.attr,
7633 &dev_attr_temperature.attr,
7634 &dev_attr_tx_power.attr,
7639 static struct attribute_group iwl4965_attribute_group = {
7640 .name = NULL, /* put in device directory */
7641 .attrs = iwl4965_sysfs_entries,
7644 static struct ieee80211_ops iwl4965_hw_ops = {
7645 .tx = iwl4965_mac_tx,
7646 .start = iwl4965_mac_start,
7647 .stop = iwl4965_mac_stop,
7648 .add_interface = iwl4965_mac_add_interface,
7649 .remove_interface = iwl4965_mac_remove_interface,
7650 .config = iwl4965_mac_config,
7651 .config_interface = iwl4965_mac_config_interface,
7652 .configure_filter = iwl4965_configure_filter,
7653 .set_key = iwl4965_mac_set_key,
7654 .update_tkip_key = iwl4965_mac_update_tkip_key,
7655 .get_stats = iwl4965_mac_get_stats,
7656 .get_tx_stats = iwl4965_mac_get_tx_stats,
7657 .conf_tx = iwl4965_mac_conf_tx,
7658 .get_tsf = iwl4965_mac_get_tsf,
7659 .reset_tsf = iwl4965_mac_reset_tsf,
7660 .beacon_update = iwl4965_mac_beacon_update,
7661 .bss_info_changed = iwl4965_bss_info_changed,
7662 #ifdef CONFIG_IWL4965_HT
7663 .ampdu_action = iwl4965_mac_ampdu_action,
7664 #endif /* CONFIG_IWL4965_HT */
7665 .hw_scan = iwl4965_mac_hw_scan
7668 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7671 struct iwl_priv *priv;
7672 struct ieee80211_hw *hw;
7673 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7674 unsigned long flags;
7675 DECLARE_MAC_BUF(mac);
7677 /************************
7678 * 1. Allocating HW data
7679 ************************/
7681 /* Disabling hardware scan means that mac80211 will perform scans
7682 * "the hard way", rather than using device's scan. */
7683 if (cfg->mod_params->disable_hw_scan) {
7684 IWL_DEBUG_INFO("Disabling hw_scan\n");
7685 iwl4965_hw_ops.hw_scan = NULL;
7688 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7694 /* At this point both hw and priv are allocated. */
7696 SET_IEEE80211_DEV(hw, &pdev->dev);
7698 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7700 priv->pci_dev = pdev;
7702 #ifdef CONFIG_IWLWIFI_DEBUG
7703 iwl_debug_level = priv->cfg->mod_params->debug;
7704 atomic_set(&priv->restrict_refcnt, 0);
7707 /**************************
7708 * 2. Initializing PCI bus
7709 **************************/
7710 if (pci_enable_device(pdev)) {
7712 goto out_ieee80211_free_hw;
7715 pci_set_master(pdev);
7717 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7719 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7721 printk(KERN_WARNING DRV_NAME
7722 ": No suitable DMA available.\n");
7723 goto out_pci_disable_device;
7726 err = pci_request_regions(pdev, DRV_NAME);
7728 goto out_pci_disable_device;
7730 pci_set_drvdata(pdev, priv);
7732 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7733 * PCI Tx retries from interfering with C3 CPU state */
7734 pci_write_config_byte(pdev, 0x41, 0x00);
7736 /***********************
7737 * 3. Read REV register
7738 ***********************/
7739 priv->hw_base = pci_iomap(pdev, 0, 0);
7740 if (!priv->hw_base) {
7742 goto out_pci_release_regions;
7745 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7746 (unsigned long long) pci_resource_len(pdev, 0));
7747 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7749 printk(KERN_INFO DRV_NAME
7750 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7756 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7757 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7759 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7760 err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7761 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7762 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7764 IWL_DEBUG_INFO("Failed to init the card\n");
7767 /* Read the EEPROM */
7768 err = iwl_eeprom_init(priv);
7770 IWL_ERROR("Unable to init EEPROM\n");
7773 /* MAC Address location in EEPROM same for 3945/4965 */
7774 iwl_eeprom_get_mac(priv, priv->mac_addr);
7775 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7776 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7778 /************************
7779 * 5. Setup HW constants
7780 ************************/
7781 /* Device-specific setup */
7782 if (priv->cfg->ops->lib->set_hw_params(priv)) {
7783 IWL_ERROR("failed to set hw parameters\n");
7787 /*******************
7789 *******************/
7791 err = iwl_setup(priv);
7793 goto out_unset_hw_params;
7794 /* At this point both hw and priv are initialized. */
7796 /**********************************
7797 * 7. Initialize module parameters
7798 **********************************/
7800 /* Disable radio (SW RF KILL) via parameter when loading driver */
7801 if (priv->cfg->mod_params->disable) {
7802 set_bit(STATUS_RF_KILL_SW, &priv->status);
7803 IWL_DEBUG_INFO("Radio disabled.\n");
7806 if (priv->cfg->mod_params->enable_qos)
7807 priv->qos_data.qos_enable = 1;
7809 /********************
7811 ********************/
7812 spin_lock_irqsave(&priv->lock, flags);
7813 iwl4965_disable_interrupts(priv);
7814 spin_unlock_irqrestore(&priv->lock, flags);
7816 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7818 IWL_ERROR("failed to create sysfs device attributes\n");
7819 goto out_unset_hw_params;
7822 err = iwl_dbgfs_register(priv, DRV_NAME);
7824 IWL_ERROR("failed to create debugfs files\n");
7825 goto out_remove_sysfs;
7828 iwl4965_setup_deferred_work(priv);
7829 iwl4965_setup_rx_handlers(priv);
7831 /********************
7833 ********************/
7834 pci_save_state(pdev);
7835 pci_disable_device(pdev);
7837 /* notify iwlcore to init */
7838 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
7842 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7843 out_unset_hw_params:
7844 iwl4965_unset_hw_params(priv);
7846 pci_iounmap(pdev, priv->hw_base);
7847 out_pci_release_regions:
7848 pci_release_regions(pdev);
7849 pci_set_drvdata(pdev, NULL);
7850 out_pci_disable_device:
7851 pci_disable_device(pdev);
7852 out_ieee80211_free_hw:
7853 ieee80211_free_hw(priv->hw);
7858 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
7860 struct iwl_priv *priv = pci_get_drvdata(pdev);
7861 struct list_head *p, *q;
7863 unsigned long flags;
7868 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7870 if (priv->mac80211_registered) {
7871 ieee80211_unregister_hw(priv->hw);
7872 priv->mac80211_registered = 0;
7875 set_bit(STATUS_EXIT_PENDING, &priv->status);
7879 /* make sure we flush any pending irq or
7880 * tasklet for the driver
7882 spin_lock_irqsave(&priv->lock, flags);
7883 iwl4965_disable_interrupts(priv);
7884 spin_unlock_irqrestore(&priv->lock, flags);
7886 iwl_synchronize_irq(priv);
7888 /* Free MAC hash list for ADHOC */
7889 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
7890 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
7892 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
7896 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
7897 iwl_dbgfs_unregister(priv);
7898 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7900 iwl4965_dealloc_ucode_pci(priv);
7903 iwl4965_rx_queue_free(priv, &priv->rxq);
7904 iwl4965_hw_txq_ctx_free(priv);
7906 iwl4965_unset_hw_params(priv);
7907 iwlcore_clear_stations_table(priv);
7910 /*netif_stop_queue(dev); */
7911 flush_workqueue(priv->workqueue);
7913 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7914 * priv->workqueue... so we can't take down the workqueue
7916 destroy_workqueue(priv->workqueue);
7917 priv->workqueue = NULL;
7919 pci_iounmap(pdev, priv->hw_base);
7920 pci_release_regions(pdev);
7921 pci_disable_device(pdev);
7922 pci_set_drvdata(pdev, NULL);
7924 iwl_free_channel_map(priv);
7925 iwl4965_free_geos(priv);
7927 if (priv->ibss_beacon)
7928 dev_kfree_skb(priv->ibss_beacon);
7930 ieee80211_free_hw(priv->hw);
7935 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7937 struct iwl_priv *priv = pci_get_drvdata(pdev);
7939 if (priv->is_open) {
7940 set_bit(STATUS_IN_SUSPEND, &priv->status);
7941 iwl4965_mac_stop(priv->hw);
7945 pci_set_power_state(pdev, PCI_D3hot);
7950 static int iwl4965_pci_resume(struct pci_dev *pdev)
7952 struct iwl_priv *priv = pci_get_drvdata(pdev);
7954 pci_set_power_state(pdev, PCI_D0);
7957 iwl4965_mac_start(priv->hw);
7959 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7963 #endif /* CONFIG_PM */
7965 /*****************************************************************************
7967 * driver and module entry point
7969 *****************************************************************************/
7971 /* Hardware specific file defines the PCI IDs table for that hardware module */
7972 static struct pci_device_id iwl_hw_card_ids[] = {
7973 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
7974 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
7977 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
7979 static struct pci_driver iwl_driver = {
7981 .id_table = iwl_hw_card_ids,
7982 .probe = iwl4965_pci_probe,
7983 .remove = __devexit_p(iwl4965_pci_remove),
7985 .suspend = iwl4965_pci_suspend,
7986 .resume = iwl4965_pci_resume,
7990 static int __init iwl4965_init(void)
7994 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7995 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7997 ret = iwl4965_rate_control_register();
7999 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8003 ret = pci_register_driver(&iwl_driver);
8005 IWL_ERROR("Unable to initialize PCI module\n");
8006 goto error_register;
8008 #ifdef CONFIG_IWLWIFI_DEBUG
8009 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
8011 IWL_ERROR("Unable to create driver sysfs file\n");
8018 #ifdef CONFIG_IWLWIFI_DEBUG
8020 pci_unregister_driver(&iwl_driver);
8023 iwl4965_rate_control_unregister();
8027 static void __exit iwl4965_exit(void)
8029 #ifdef CONFIG_IWLWIFI_DEBUG
8030 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
8032 pci_unregister_driver(&iwl_driver);
8033 iwl4965_rate_control_unregister();
8036 module_exit(iwl4965_exit);
8037 module_init(iwl4965_init);