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 * Intel Linux Wireless <ilw@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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
51 #include "iwl-commands.h"
53 #include "iwl-3945-fh.h"
54 #include "iwl-helpers.h"
58 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
59 struct iwl3945_tx_queue *txq);
61 /******************************************************************************
65 ******************************************************************************/
67 /* module parameters */
68 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
69 static u32 iwl3945_param_debug; /* def: 0 = minimal debug log messages */
70 static int iwl3945_param_disable; /* def: 0 = enable radio */
71 static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
72 int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
73 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
76 * module name, copyright, version, etc.
79 #define DRV_DESCRIPTION \
80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
82 #ifdef CONFIG_IWL3945_DEBUG
88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
94 #define IWL39_VERSION "1.2.26k" VD VS
95 #define DRV_COPYRIGHT "Copyright(c) 2003-2008 Intel Corporation"
96 #define DRV_AUTHOR "<ilw@linux.intel.com>"
97 #define DRV_VERSION IWL39_VERSION
100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
101 MODULE_VERSION(DRV_VERSION);
102 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
103 MODULE_LICENSE("GPL");
105 static const struct ieee80211_supported_band *iwl3945_get_band(
106 struct iwl3945_priv *priv, enum ieee80211_band band)
108 return priv->hw->wiphy->bands[band];
111 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
114 * Theory of operation
116 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
117 * of buffer descriptors, each of which points to one or more data buffers for
118 * the device to read from or fill. Driver and device exchange status of each
119 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
120 * entries in each circular buffer, to protect against confusing empty and full
123 * The device reads or writes the data in the queues via the device's several
124 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
126 * For Tx queue, there are low mark and high mark limits. If, after queuing
127 * the packet for Tx, free space become < low mark, Tx queue stopped. When
128 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
131 * The 3945 operates with six queues: One receive queue, one transmit queue
132 * (#4) for sending commands to the device firmware, and four transmit queues
133 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
134 ***************************************************/
136 int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
138 return q->write_ptr > q->read_ptr ?
139 (i >= q->read_ptr && i < q->write_ptr) :
140 !(i < q->read_ptr && i >= q->write_ptr);
144 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
146 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl_queue *q,
147 int count, int slots_num, u32 id)
150 q->n_window = slots_num;
153 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
154 * and iwl_queue_dec_wrap are broken. */
155 BUG_ON(!is_power_of_2(count));
157 /* slots_num must be power-of-two size, otherwise
158 * get_cmd_index is broken. */
159 BUG_ON(!is_power_of_2(slots_num));
161 q->low_mark = q->n_window / 4;
165 q->high_mark = q->n_window / 8;
166 if (q->high_mark < 2)
169 q->write_ptr = q->read_ptr = 0;
175 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
177 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
178 struct iwl3945_tx_queue *txq, u32 id)
180 struct pci_dev *dev = priv->pci_dev;
182 /* Driver private data, only for Tx (not command) queues,
183 * not shared with device. */
184 if (id != IWL_CMD_QUEUE_NUM) {
185 txq->txb = kmalloc(sizeof(txq->txb[0]) *
186 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
188 IWL_ERROR("kmalloc for auxiliary BD "
189 "structures failed\n");
195 /* Circular buffer of transmit frame descriptors (TFDs),
196 * shared with device */
197 txq->bd = pci_alloc_consistent(dev,
198 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
202 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
203 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
218 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
220 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
221 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
223 struct pci_dev *dev = priv->pci_dev;
228 * Alloc buffer array for commands (Tx or other types of commands).
229 * For the command queue (#4), allocate command space + one big
230 * command for scan, since scan command is very huge; the system will
231 * not have two scans at the same time, so only one is needed.
232 * For data Tx queues (all other queues), no super-size command
235 len = sizeof(struct iwl3945_cmd) * slots_num;
236 if (txq_id == IWL_CMD_QUEUE_NUM)
237 len += IWL_MAX_SCAN_SIZE;
238 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
242 /* Alloc driver data array and TFD circular buffer */
243 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
245 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
249 txq->need_update = 0;
251 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
252 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
253 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
255 /* Initialize queue high/low-water, head/tail indexes */
256 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
258 /* Tell device where to find queue, enable DMA channel. */
259 iwl3945_hw_tx_queue_init(priv, txq);
265 * iwl3945_tx_queue_free - Deallocate DMA queue.
266 * @txq: Transmit queue to deallocate.
268 * Empty queue by removing and destroying all BD's.
270 * 0-fill, but do not free "txq" descriptor structure.
272 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
274 struct iwl_queue *q = &txq->q;
275 struct pci_dev *dev = priv->pci_dev;
281 /* first, empty all BD's */
282 for (; q->write_ptr != q->read_ptr;
283 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
284 iwl3945_hw_txq_free_tfd(priv, txq);
286 len = sizeof(struct iwl3945_cmd) * q->n_window;
287 if (q->id == IWL_CMD_QUEUE_NUM)
288 len += IWL_MAX_SCAN_SIZE;
290 /* De-alloc array of command/tx buffers */
291 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
293 /* De-alloc circular buffer of TFDs */
295 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
296 txq->q.n_bd, txq->bd, txq->q.dma_addr);
298 /* De-alloc array of per-TFD driver data */
302 /* 0-fill queue descriptor structure */
303 memset(txq, 0, sizeof(*txq));
306 /*************** STATION TABLE MANAGEMENT ****
307 * mac80211 should be examined to determine if sta_info is duplicating
308 * the functionality provided here
311 /**************************************************************/
312 #if 0 /* temporary disable till we add real remove station */
314 * iwl3945_remove_station - Remove driver's knowledge of station.
316 * NOTE: This does not remove station from device's station table.
318 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
320 int index = IWL_INVALID_STATION;
324 spin_lock_irqsave(&priv->sta_lock, flags);
328 else if (is_broadcast_ether_addr(addr))
329 index = priv->hw_setting.bcast_sta_id;
331 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
332 if (priv->stations[i].used &&
333 !compare_ether_addr(priv->stations[i].sta.sta.addr,
339 if (unlikely(index == IWL_INVALID_STATION))
342 if (priv->stations[index].used) {
343 priv->stations[index].used = 0;
344 priv->num_stations--;
347 BUG_ON(priv->num_stations < 0);
350 spin_unlock_irqrestore(&priv->sta_lock, flags);
356 * iwl3945_clear_stations_table - Clear the driver's station table
358 * NOTE: This does not clear or otherwise alter the device's station table.
360 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
364 spin_lock_irqsave(&priv->sta_lock, flags);
366 priv->num_stations = 0;
367 memset(priv->stations, 0, sizeof(priv->stations));
369 spin_unlock_irqrestore(&priv->sta_lock, flags);
373 * iwl3945_add_station - Add station to station tables in driver and device
375 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
378 int index = IWL_INVALID_STATION;
379 struct iwl3945_station_entry *station;
380 unsigned long flags_spin;
383 spin_lock_irqsave(&priv->sta_lock, flags_spin);
386 else if (is_broadcast_ether_addr(addr))
387 index = priv->hw_setting.bcast_sta_id;
389 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
390 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
396 if (!priv->stations[i].used &&
397 index == IWL_INVALID_STATION)
401 /* These two conditions has the same outcome but keep them separate
402 since they have different meaning */
403 if (unlikely(index == IWL_INVALID_STATION)) {
404 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
408 if (priv->stations[index].used &&
409 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
410 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
414 IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
415 station = &priv->stations[index];
417 priv->num_stations++;
419 /* Set up the REPLY_ADD_STA command to send to device */
420 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
421 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
422 station->sta.mode = 0;
423 station->sta.sta.sta_id = index;
424 station->sta.station_flags = 0;
426 if (priv->band == IEEE80211_BAND_5GHZ)
427 rate = IWL_RATE_6M_PLCP;
429 rate = IWL_RATE_1M_PLCP;
431 /* Turn on both antennas for the station... */
432 station->sta.rate_n_flags =
433 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
435 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
437 /* Add station to device's station table */
438 iwl3945_send_add_station(priv, &station->sta, flags);
443 /*************** DRIVER STATUS FUNCTIONS *****/
445 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
447 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
448 * set but EXIT_PENDING is not */
449 return test_bit(STATUS_READY, &priv->status) &&
450 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
451 !test_bit(STATUS_EXIT_PENDING, &priv->status);
454 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
456 return test_bit(STATUS_ALIVE, &priv->status);
459 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
461 return test_bit(STATUS_INIT, &priv->status);
464 static inline int iwl3945_is_rfkill_sw(struct iwl3945_priv *priv)
466 return test_bit(STATUS_RF_KILL_SW, &priv->status);
469 static inline int iwl3945_is_rfkill_hw(struct iwl3945_priv *priv)
471 return test_bit(STATUS_RF_KILL_HW, &priv->status);
474 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
476 return iwl3945_is_rfkill_hw(priv) ||
477 iwl3945_is_rfkill_sw(priv);
480 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
483 if (iwl3945_is_rfkill(priv))
486 return iwl3945_is_ready(priv);
489 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
491 #define IWL_CMD(x) case x: return #x
492 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
495 * iwl3945_enqueue_hcmd - enqueue a uCode command
496 * @priv: device private data point
497 * @cmd: a point to the ucode command structure
499 * The function returns < 0 values to indicate the operation is
500 * failed. On success, it turns the index (> 0) of command in the
503 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
505 struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
506 struct iwl_queue *q = &txq->q;
507 struct iwl3945_tfd_frame *tfd;
509 struct iwl3945_cmd *out_cmd;
511 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
512 dma_addr_t phys_addr;
518 /* If any of the command structures end up being larger than
519 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
520 * we will need to increase the size of the TFD entries */
521 BUG_ON((fix_size > TFD39_MAX_PAYLOAD_SIZE) &&
522 !(cmd->meta.flags & CMD_SIZE_HUGE));
525 if (iwl3945_is_rfkill(priv)) {
526 IWL_DEBUG_INFO("Not sending command - RF KILL");
530 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
531 IWL_ERROR("No space for Tx\n");
535 spin_lock_irqsave(&priv->hcmd_lock, flags);
537 tfd = &txq->bd[q->write_ptr];
538 memset(tfd, 0, sizeof(*tfd));
540 control_flags = (u32 *) tfd;
542 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
543 out_cmd = &txq->cmd[idx];
545 out_cmd->hdr.cmd = cmd->id;
546 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
547 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
549 /* At this point, the out_cmd now has all of the incoming cmd
552 out_cmd->hdr.flags = 0;
553 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
554 INDEX_TO_SEQ(q->write_ptr));
555 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
556 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
558 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
559 offsetof(struct iwl3945_cmd, hdr);
560 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
562 pad = U32_PAD(cmd->len);
563 count = TFD_CTL_COUNT_GET(*control_flags);
564 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
566 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
567 "%d bytes at %d[%d]:%d\n",
568 get_cmd_string(out_cmd->hdr.cmd),
569 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
570 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
572 txq->need_update = 1;
574 /* Increment and update queue's write index */
575 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
576 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
578 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
579 return ret ? ret : idx;
582 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
586 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
588 /* An asynchronous command can not expect an SKB to be set. */
589 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
591 /* An asynchronous command MUST have a callback. */
592 BUG_ON(!cmd->meta.u.callback);
594 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
597 ret = iwl3945_enqueue_hcmd(priv, cmd);
599 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
600 get_cmd_string(cmd->id), ret);
606 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
611 BUG_ON(cmd->meta.flags & CMD_ASYNC);
613 /* A synchronous command can not have a callback set. */
614 BUG_ON(cmd->meta.u.callback != NULL);
616 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
617 IWL_ERROR("Error sending %s: Already sending a host command\n",
618 get_cmd_string(cmd->id));
623 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
625 if (cmd->meta.flags & CMD_WANT_SKB)
626 cmd->meta.source = &cmd->meta;
628 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
631 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
632 get_cmd_string(cmd->id), ret);
636 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
637 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
638 HOST_COMPLETE_TIMEOUT);
640 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
641 IWL_ERROR("Error sending %s: time out after %dms.\n",
642 get_cmd_string(cmd->id),
643 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
645 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
651 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
652 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
653 get_cmd_string(cmd->id));
657 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
658 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
659 get_cmd_string(cmd->id));
663 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
664 IWL_ERROR("Error: Response NULL in '%s'\n",
665 get_cmd_string(cmd->id));
674 if (cmd->meta.flags & CMD_WANT_SKB) {
675 struct iwl3945_cmd *qcmd;
677 /* Cancel the CMD_WANT_SKB flag for the cmd in the
678 * TX cmd queue. Otherwise in case the cmd comes
679 * in later, it will possibly set an invalid
680 * address (cmd->meta.source). */
681 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
682 qcmd->meta.flags &= ~CMD_WANT_SKB;
685 if (cmd->meta.u.skb) {
686 dev_kfree_skb_any(cmd->meta.u.skb);
687 cmd->meta.u.skb = NULL;
690 clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
694 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
696 if (cmd->meta.flags & CMD_ASYNC)
697 return iwl3945_send_cmd_async(priv, cmd);
699 return iwl3945_send_cmd_sync(priv, cmd);
702 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
704 struct iwl3945_host_cmd cmd = {
710 return iwl3945_send_cmd_sync(priv, &cmd);
713 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
715 struct iwl3945_host_cmd cmd = {
721 return iwl3945_send_cmd_sync(priv, &cmd);
724 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
726 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
730 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
731 * @band: 2.4 or 5 GHz band
732 * @channel: Any channel valid for the requested band
734 * In addition to setting the staging RXON, priv->band is also set.
736 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
737 * in the staging RXON flag structure based on the band
739 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
740 enum ieee80211_band band,
743 if (!iwl3945_get_channel_info(priv, band, channel)) {
744 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
749 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
750 (priv->band == band))
753 priv->staging_rxon.channel = cpu_to_le16(channel);
754 if (band == IEEE80211_BAND_5GHZ)
755 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
757 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
761 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
767 * iwl3945_check_rxon_cmd - validate RXON structure is valid
769 * NOTE: This is really only useful during development and can eventually
770 * be #ifdef'd out once the driver is stable and folks aren't actively
773 static int iwl3945_check_rxon_cmd(struct iwl3945_priv *priv)
777 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
779 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
780 error |= le32_to_cpu(rxon->flags &
781 (RXON_FLG_TGJ_NARROW_BAND_MSK |
782 RXON_FLG_RADAR_DETECT_MSK));
784 IWL_WARNING("check 24G fields %d | %d\n",
787 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
788 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
790 IWL_WARNING("check 52 fields %d | %d\n",
792 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
794 IWL_WARNING("check 52 CCK %d | %d\n",
797 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
799 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
801 /* make sure basic rates 6Mbps and 1Mbps are supported */
802 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
803 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
805 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
807 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
809 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
811 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
812 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
814 IWL_WARNING("check CCK and short slot %d | %d\n",
817 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
818 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
820 IWL_WARNING("check CCK & auto detect %d | %d\n",
823 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
824 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
826 IWL_WARNING("check TGG and auto detect %d | %d\n",
829 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
830 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
831 RXON_FLG_ANT_A_MSK)) == 0);
833 IWL_WARNING("check antenna %d %d\n", counter++, error);
836 IWL_WARNING("Tuning to channel %d\n",
837 le16_to_cpu(rxon->channel));
840 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
847 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
848 * @priv: staging_rxon is compared to active_rxon
850 * If the RXON structure is changing enough to require a new tune,
851 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
852 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
854 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
857 /* These items are only settable from the full RXON command */
858 if (!(iwl3945_is_associated(priv)) ||
859 compare_ether_addr(priv->staging_rxon.bssid_addr,
860 priv->active_rxon.bssid_addr) ||
861 compare_ether_addr(priv->staging_rxon.node_addr,
862 priv->active_rxon.node_addr) ||
863 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
864 priv->active_rxon.wlap_bssid_addr) ||
865 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
866 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
867 (priv->staging_rxon.air_propagation !=
868 priv->active_rxon.air_propagation) ||
869 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
872 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
873 * be updated with the RXON_ASSOC command -- however only some
874 * flag transitions are allowed using RXON_ASSOC */
876 /* Check if we are not switching bands */
877 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
878 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
881 /* Check if we are switching association toggle */
882 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
883 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
889 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
892 struct iwl_rx_packet *res = NULL;
893 struct iwl3945_rxon_assoc_cmd rxon_assoc;
894 struct iwl3945_host_cmd cmd = {
895 .id = REPLY_RXON_ASSOC,
896 .len = sizeof(rxon_assoc),
897 .meta.flags = CMD_WANT_SKB,
900 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
901 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
903 if ((rxon1->flags == rxon2->flags) &&
904 (rxon1->filter_flags == rxon2->filter_flags) &&
905 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
906 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
907 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
911 rxon_assoc.flags = priv->staging_rxon.flags;
912 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
913 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
914 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
915 rxon_assoc.reserved = 0;
917 rc = iwl3945_send_cmd_sync(priv, &cmd);
921 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
922 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
923 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
927 priv->alloc_rxb_skb--;
928 dev_kfree_skb_any(cmd.meta.u.skb);
934 * iwl3945_commit_rxon - commit staging_rxon to hardware
936 * The RXON command in staging_rxon is committed to the hardware and
937 * the active_rxon structure is updated with the new data. This
938 * function correctly transitions out of the RXON_ASSOC_MSK state if
939 * a HW tune is required based on the RXON structure changes.
941 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
943 /* cast away the const for active_rxon in this function */
944 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
947 if (!iwl3945_is_alive(priv))
950 /* always get timestamp with Rx frame */
951 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
954 priv->staging_rxon.flags &=
955 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
956 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
958 rc = iwl3945_check_rxon_cmd(priv);
960 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
964 /* If we don't need to send a full RXON, we can use
965 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
966 * and other flags for the current radio configuration. */
967 if (!iwl3945_full_rxon_required(priv)) {
968 rc = iwl3945_send_rxon_assoc(priv);
970 IWL_ERROR("Error setting RXON_ASSOC "
971 "configuration (%d).\n", rc);
975 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
980 /* If we are currently associated and the new config requires
981 * an RXON_ASSOC and the new config wants the associated mask enabled,
982 * we must clear the associated from the active configuration
983 * before we apply the new config */
984 if (iwl3945_is_associated(priv) &&
985 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
986 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
987 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
989 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
990 sizeof(struct iwl3945_rxon_cmd),
993 /* If the mask clearing failed then we set
994 * active_rxon back to what it was previously */
996 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
997 IWL_ERROR("Error clearing ASSOC_MSK on current "
998 "configuration (%d).\n", rc);
1003 IWL_DEBUG_INFO("Sending RXON\n"
1004 "* with%s RXON_FILTER_ASSOC_MSK\n"
1007 ((priv->staging_rxon.filter_flags &
1008 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1009 le16_to_cpu(priv->staging_rxon.channel),
1010 priv->staging_rxon.bssid_addr);
1012 /* Apply the new configuration */
1013 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1014 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1016 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1020 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1022 iwl3945_clear_stations_table(priv);
1024 /* If we issue a new RXON command which required a tune then we must
1025 * send a new TXPOWER command or we won't be able to Tx any frames */
1026 rc = iwl3945_hw_reg_send_txpower(priv);
1028 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1032 /* Add the broadcast address so we can send broadcast frames */
1033 if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
1034 IWL_INVALID_STATION) {
1035 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1039 /* If we have set the ASSOC_MSK and we are in BSS mode then
1040 * add the IWL_AP_ID to the station rate table */
1041 if (iwl3945_is_associated(priv) &&
1042 (priv->iw_mode == NL80211_IFTYPE_STATION))
1043 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1044 == IWL_INVALID_STATION) {
1045 IWL_ERROR("Error adding AP address for transmit.\n");
1049 /* Init the hardware's rate fallback order based on the band */
1050 rc = iwl3945_init_hw_rate_table(priv);
1052 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1059 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1061 struct iwl_bt_cmd bt_cmd = {
1069 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1070 sizeof(bt_cmd), &bt_cmd);
1073 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1076 struct iwl_rx_packet *res;
1077 struct iwl3945_host_cmd cmd = {
1078 .id = REPLY_SCAN_ABORT_CMD,
1079 .meta.flags = CMD_WANT_SKB,
1082 /* If there isn't a scan actively going on in the hardware
1083 * then we are in between scan bands and not actually
1084 * actively scanning, so don't send the abort command */
1085 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1086 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1090 rc = iwl3945_send_cmd_sync(priv, &cmd);
1092 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1096 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1097 if (res->u.status != CAN_ABORT_STATUS) {
1098 /* The scan abort will return 1 for success or
1099 * 2 for "failure". A failure condition can be
1100 * due to simply not being in an active scan which
1101 * can occur if we send the scan abort before we
1102 * the microcode has notified us that a scan is
1104 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1105 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1106 clear_bit(STATUS_SCAN_HW, &priv->status);
1109 dev_kfree_skb_any(cmd.meta.u.skb);
1114 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1115 struct iwl3945_cmd *cmd,
1116 struct sk_buff *skb)
1124 * Use: Sets the device's internal card state to enable, disable, or halt
1126 * When in the 'enable' state the card operates as normal.
1127 * When in the 'disable' state, the card enters into a low power mode.
1128 * When in the 'halt' state, the card is shut down and must be fully
1129 * restarted to come back on.
1131 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1133 struct iwl3945_host_cmd cmd = {
1134 .id = REPLY_CARD_STATE_CMD,
1137 .meta.flags = meta_flag,
1140 if (meta_flag & CMD_ASYNC)
1141 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1143 return iwl3945_send_cmd(priv, &cmd);
1146 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1147 struct iwl3945_cmd *cmd, struct sk_buff *skb)
1149 struct iwl_rx_packet *res = NULL;
1152 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1156 res = (struct iwl_rx_packet *)skb->data;
1157 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1158 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1163 switch (res->u.add_sta.status) {
1164 case ADD_STA_SUCCESS_MSK:
1170 /* We didn't cache the SKB; let the caller free it */
1174 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1175 struct iwl3945_addsta_cmd *sta, u8 flags)
1177 struct iwl_rx_packet *res = NULL;
1179 struct iwl3945_host_cmd cmd = {
1180 .id = REPLY_ADD_STA,
1181 .len = sizeof(struct iwl3945_addsta_cmd),
1182 .meta.flags = flags,
1186 if (flags & CMD_ASYNC)
1187 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1189 cmd.meta.flags |= CMD_WANT_SKB;
1191 rc = iwl3945_send_cmd(priv, &cmd);
1193 if (rc || (flags & CMD_ASYNC))
1196 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1197 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1198 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1204 switch (res->u.add_sta.status) {
1205 case ADD_STA_SUCCESS_MSK:
1206 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1210 IWL_WARNING("REPLY_ADD_STA failed\n");
1215 priv->alloc_rxb_skb--;
1216 dev_kfree_skb_any(cmd.meta.u.skb);
1221 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1222 struct ieee80211_key_conf *keyconf,
1225 unsigned long flags;
1226 __le16 key_flags = 0;
1228 switch (keyconf->alg) {
1230 key_flags |= STA_KEY_FLG_CCMP;
1231 key_flags |= cpu_to_le16(
1232 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1233 key_flags &= ~STA_KEY_FLG_INVALID;
1240 spin_lock_irqsave(&priv->sta_lock, flags);
1241 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1242 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1243 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1246 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1248 priv->stations[sta_id].sta.key.key_flags = key_flags;
1249 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1250 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1252 spin_unlock_irqrestore(&priv->sta_lock, flags);
1254 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1255 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1259 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1261 unsigned long flags;
1263 spin_lock_irqsave(&priv->sta_lock, flags);
1264 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1265 memset(&priv->stations[sta_id].sta.key, 0,
1266 sizeof(struct iwl4965_keyinfo));
1267 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1268 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1269 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1270 spin_unlock_irqrestore(&priv->sta_lock, flags);
1272 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1273 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1277 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1279 struct list_head *element;
1281 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1282 priv->frames_count);
1284 while (!list_empty(&priv->free_frames)) {
1285 element = priv->free_frames.next;
1287 kfree(list_entry(element, struct iwl3945_frame, list));
1288 priv->frames_count--;
1291 if (priv->frames_count) {
1292 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1293 priv->frames_count);
1294 priv->frames_count = 0;
1298 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1300 struct iwl3945_frame *frame;
1301 struct list_head *element;
1302 if (list_empty(&priv->free_frames)) {
1303 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1305 IWL_ERROR("Could not allocate frame!\n");
1309 priv->frames_count++;
1313 element = priv->free_frames.next;
1315 return list_entry(element, struct iwl3945_frame, list);
1318 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1320 memset(frame, 0, sizeof(*frame));
1321 list_add(&frame->list, &priv->free_frames);
1324 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1325 struct ieee80211_hdr *hdr,
1329 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1330 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1331 (priv->iw_mode != NL80211_IFTYPE_AP)))
1334 if (priv->ibss_beacon->len > left)
1337 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1339 return priv->ibss_beacon->len;
1342 static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
1348 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1349 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1351 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1353 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1354 i = iwl3945_rates[i].next_ieee) {
1355 if (rate_mask & (1 << i))
1356 return iwl3945_rates[i].plcp;
1359 /* No valid rate was found. Assign the lowest one */
1360 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1361 return IWL_RATE_1M_PLCP;
1363 return IWL_RATE_6M_PLCP;
1366 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1368 struct iwl3945_frame *frame;
1369 unsigned int frame_size;
1373 frame = iwl3945_get_free_frame(priv);
1376 IWL_ERROR("Could not obtain free frame buffer for beacon "
1381 rate = iwl3945_rate_get_lowest_plcp(priv);
1383 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1385 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1388 iwl3945_free_frame(priv, frame);
1393 /******************************************************************************
1395 * EEPROM related functions
1397 ******************************************************************************/
1399 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1401 memcpy(mac, priv->eeprom.mac_address, 6);
1405 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1406 * embedded controller) as EEPROM reader; each read is a series of pulses
1407 * to/from the EEPROM chip, not a single event, so even reads could conflict
1408 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1409 * simply claims ownership, which should be safe when this function is called
1410 * (i.e. before loading uCode!).
1412 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1414 _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1419 * iwl3945_eeprom_init - read EEPROM contents
1421 * Load the EEPROM contents from adapter into priv->eeprom
1423 * NOTE: This routine uses the non-debug IO access functions.
1425 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1427 u16 *e = (u16 *)&priv->eeprom;
1428 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1429 int sz = sizeof(priv->eeprom);
1433 /* The EEPROM structure has several padding buffers within it
1434 * and when adding new EEPROM maps is subject to programmer errors
1435 * which may be very difficult to identify without explicitly
1436 * checking the resulting size of the eeprom map. */
1437 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1439 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1440 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1444 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1445 ret = iwl3945_eeprom_acquire_semaphore(priv);
1447 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1451 /* eeprom is an array of 16bit values */
1452 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1455 _iwl3945_write32(priv, CSR_EEPROM_REG,
1456 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1457 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1458 ret = iwl3945_poll_direct_bit(priv, CSR_EEPROM_REG,
1459 CSR_EEPROM_REG_READ_VALID_MSK,
1460 IWL_EEPROM_ACCESS_TIMEOUT);
1462 IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1466 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1467 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1473 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1475 if (priv->hw_setting.shared_virt)
1476 pci_free_consistent(priv->pci_dev,
1477 sizeof(struct iwl3945_shared),
1478 priv->hw_setting.shared_virt,
1479 priv->hw_setting.shared_phys);
1483 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1485 * return : set the bit for each supported rate insert in ie
1487 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1488 u16 basic_rate, int *left)
1490 u16 ret_rates = 0, bit;
1495 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1496 if (bit & supported_rate) {
1498 rates[*cnt] = iwl3945_rates[i].ieee |
1499 ((bit & basic_rate) ? 0x80 : 0x00);
1503 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1512 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1514 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1515 struct ieee80211_mgmt *frame,
1520 u16 active_rates, ret_rates, cck_rates;
1522 /* Make sure there is enough space for the probe request,
1523 * two mandatory IEs and the data */
1529 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1530 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1531 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1532 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1533 frame->seq_ctrl = 0;
1535 /* fill in our indirect SSID IE */
1542 pos = &(frame->u.probe_req.variable[0]);
1543 *pos++ = WLAN_EID_SSID;
1546 /* fill in supported rate */
1552 /* ... fill it in... */
1553 *pos++ = WLAN_EID_SUPP_RATES;
1556 priv->active_rate = priv->rates_mask;
1557 active_rates = priv->active_rate;
1558 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1560 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1561 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1562 priv->active_rate_basic, &left);
1563 active_rates &= ~ret_rates;
1565 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1566 priv->active_rate_basic, &left);
1567 active_rates &= ~ret_rates;
1571 if (active_rates == 0)
1574 /* fill in supported extended rate */
1579 /* ... fill it in... */
1580 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1582 iwl3945_supported_rate_to_ie(pos, active_rates,
1583 priv->active_rate_basic, &left);
1594 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1595 struct iwl_qosparam_cmd *qos)
1598 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1599 sizeof(struct iwl_qosparam_cmd), qos);
1602 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1608 unsigned long flags;
1611 spin_lock_irqsave(&priv->lock, flags);
1612 priv->qos_data.qos_active = 0;
1614 /* QoS always active in AP and ADHOC mode
1615 * In STA mode wait for association
1617 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
1618 priv->iw_mode == NL80211_IFTYPE_AP)
1619 priv->qos_data.qos_active = 1;
1621 priv->qos_data.qos_active = 0;
1624 /* check for legacy mode */
1625 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
1626 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
1627 (priv->iw_mode == NL80211_IFTYPE_STATION &&
1628 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
1633 if (priv->qos_data.qos_active)
1636 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1637 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1638 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1639 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1640 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1642 if (priv->qos_data.qos_active) {
1644 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1645 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1646 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1647 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1648 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1651 priv->qos_data.def_qos_parm.ac[i].cw_min =
1652 cpu_to_le16((cw_min + 1) / 2 - 1);
1653 priv->qos_data.def_qos_parm.ac[i].cw_max =
1654 cpu_to_le16(cw_max);
1655 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1657 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1660 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1662 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1665 priv->qos_data.def_qos_parm.ac[i].cw_min =
1666 cpu_to_le16((cw_min + 1) / 4 - 1);
1667 priv->qos_data.def_qos_parm.ac[i].cw_max =
1668 cpu_to_le16((cw_max + 1) / 2 - 1);
1669 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1670 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1672 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1675 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1678 for (i = 1; i < 4; i++) {
1679 priv->qos_data.def_qos_parm.ac[i].cw_min =
1680 cpu_to_le16(cw_min);
1681 priv->qos_data.def_qos_parm.ac[i].cw_max =
1682 cpu_to_le16(cw_max);
1683 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1684 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1685 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1688 IWL_DEBUG_QOS("set QoS to default \n");
1690 spin_unlock_irqrestore(&priv->lock, flags);
1693 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1695 unsigned long flags;
1697 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1700 spin_lock_irqsave(&priv->lock, flags);
1701 priv->qos_data.def_qos_parm.qos_flags = 0;
1703 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1704 !priv->qos_data.qos_cap.q_AP.txop_request)
1705 priv->qos_data.def_qos_parm.qos_flags |=
1706 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1708 if (priv->qos_data.qos_active)
1709 priv->qos_data.def_qos_parm.qos_flags |=
1710 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1712 spin_unlock_irqrestore(&priv->lock, flags);
1714 if (force || iwl3945_is_associated(priv)) {
1715 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1716 priv->qos_data.qos_active);
1718 iwl3945_send_qos_params_command(priv,
1719 &(priv->qos_data.def_qos_parm));
1724 * Power management (not Tx power!) functions
1726 #define MSEC_TO_USEC 1024
1729 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1730 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1731 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1732 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1733 __constant_cpu_to_le32(X1), \
1734 __constant_cpu_to_le32(X2), \
1735 __constant_cpu_to_le32(X3), \
1736 __constant_cpu_to_le32(X4)}
1738 /* default power management (not Tx power) table values */
1740 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1741 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1742 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1743 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1744 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1745 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1746 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1750 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1751 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1752 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1753 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1754 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1755 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1756 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1757 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1758 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1759 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1760 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1763 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1766 struct iwl3945_power_mgr *pow_data;
1767 int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1770 IWL_DEBUG_POWER("Initialize power \n");
1772 pow_data = &(priv->power_data);
1774 memset(pow_data, 0, sizeof(*pow_data));
1776 pow_data->active_index = IWL_POWER_RANGE_0;
1777 pow_data->dtim_val = 0xffff;
1779 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1780 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1782 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1786 struct iwl_powertable_cmd *cmd;
1788 IWL_DEBUG_POWER("adjust power command flags\n");
1790 for (i = 0; i < IWL39_POWER_AC; i++) {
1791 cmd = &pow_data->pwr_range_0[i].cmd;
1794 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1796 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1802 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1803 struct iwl_powertable_cmd *cmd, u32 mode)
1808 struct iwl_power_vec_entry *range;
1810 struct iwl3945_power_mgr *pow_data;
1812 if (mode > IWL_POWER_INDEX_5) {
1813 IWL_DEBUG_POWER("Error invalid power mode \n");
1816 pow_data = &(priv->power_data);
1818 if (pow_data->active_index == IWL_POWER_RANGE_0)
1819 range = &pow_data->pwr_range_0[0];
1821 range = &pow_data->pwr_range_1[1];
1823 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1825 #ifdef IWL_MAC80211_DISABLE
1826 if (priv->assoc_network != NULL) {
1827 unsigned long flags;
1829 period = priv->assoc_network->tim.tim_period;
1831 #endif /*IWL_MAC80211_DISABLE */
1832 skip = range[mode].no_dtim;
1841 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1843 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1844 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1845 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1848 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1849 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1850 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1853 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1854 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1855 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1856 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1857 le32_to_cpu(cmd->sleep_interval[0]),
1858 le32_to_cpu(cmd->sleep_interval[1]),
1859 le32_to_cpu(cmd->sleep_interval[2]),
1860 le32_to_cpu(cmd->sleep_interval[3]),
1861 le32_to_cpu(cmd->sleep_interval[4]));
1866 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1868 u32 uninitialized_var(final_mode);
1870 struct iwl_powertable_cmd cmd;
1872 /* If on battery, set to 3,
1873 * if plugged into AC power, set to CAM ("continuously aware mode"),
1874 * else user level */
1876 case IWL39_POWER_BATTERY:
1877 final_mode = IWL_POWER_INDEX_3;
1879 case IWL39_POWER_AC:
1880 final_mode = IWL_POWER_MODE_CAM;
1887 iwl3945_update_power_cmd(priv, &cmd, final_mode);
1889 /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1890 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1891 sizeof(struct iwl3945_powertable_cmd), &cmd);
1893 if (final_mode == IWL_POWER_MODE_CAM)
1894 clear_bit(STATUS_POWER_PMI, &priv->status);
1896 set_bit(STATUS_POWER_PMI, &priv->status);
1902 * iwl3945_scan_cancel - Cancel any currently executing HW scan
1904 * NOTE: priv->mutex is not required before calling this function
1906 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
1908 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1909 clear_bit(STATUS_SCANNING, &priv->status);
1913 if (test_bit(STATUS_SCANNING, &priv->status)) {
1914 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1915 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1916 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1917 queue_work(priv->workqueue, &priv->abort_scan);
1920 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1922 return test_bit(STATUS_SCANNING, &priv->status);
1929 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
1930 * @ms: amount of time to wait (in milliseconds) for scan to abort
1932 * NOTE: priv->mutex must be held before calling this function
1934 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
1936 unsigned long now = jiffies;
1939 ret = iwl3945_scan_cancel(priv);
1941 mutex_unlock(&priv->mutex);
1942 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1943 test_bit(STATUS_SCANNING, &priv->status))
1945 mutex_lock(&priv->mutex);
1947 return test_bit(STATUS_SCANNING, &priv->status);
1953 #define MAX_UCODE_BEACON_INTERVAL 1024
1954 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1956 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1959 u16 beacon_factor = 0;
1962 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1963 / MAX_UCODE_BEACON_INTERVAL;
1964 new_val = beacon_val / beacon_factor;
1966 return cpu_to_le16(new_val);
1969 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
1971 u64 interval_tm_unit;
1973 unsigned long flags;
1974 struct ieee80211_conf *conf = NULL;
1977 conf = ieee80211_get_hw_conf(priv->hw);
1979 spin_lock_irqsave(&priv->lock, flags);
1980 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1981 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1983 tsf = priv->timestamp;
1985 beacon_int = priv->beacon_int;
1986 spin_unlock_irqrestore(&priv->lock, flags);
1988 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1989 if (beacon_int == 0) {
1990 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1991 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1993 priv->rxon_timing.beacon_interval =
1994 cpu_to_le16(beacon_int);
1995 priv->rxon_timing.beacon_interval =
1996 iwl3945_adjust_beacon_interval(
1997 le16_to_cpu(priv->rxon_timing.beacon_interval));
2000 priv->rxon_timing.atim_window = 0;
2002 priv->rxon_timing.beacon_interval =
2003 iwl3945_adjust_beacon_interval(conf->beacon_int);
2004 /* TODO: we need to get atim_window from upper stack
2005 * for now we set to 0 */
2006 priv->rxon_timing.atim_window = 0;
2010 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2011 result = do_div(tsf, interval_tm_unit);
2012 priv->rxon_timing.beacon_init_val =
2013 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2016 ("beacon interval %d beacon timer %d beacon tim %d\n",
2017 le16_to_cpu(priv->rxon_timing.beacon_interval),
2018 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2019 le16_to_cpu(priv->rxon_timing.atim_window));
2022 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2024 if (!iwl3945_is_ready_rf(priv)) {
2025 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2029 if (test_bit(STATUS_SCANNING, &priv->status)) {
2030 IWL_DEBUG_SCAN("Scan already in progress.\n");
2034 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2035 IWL_DEBUG_SCAN("Scan request while abort pending. "
2040 IWL_DEBUG_INFO("Starting scan...\n");
2041 if (priv->cfg->sku & IWL_SKU_G)
2042 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2043 if (priv->cfg->sku & IWL_SKU_A)
2044 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2045 set_bit(STATUS_SCANNING, &priv->status);
2046 priv->scan_start = jiffies;
2047 priv->scan_pass_start = priv->scan_start;
2049 queue_work(priv->workqueue, &priv->request_scan);
2054 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2056 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2059 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2061 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2066 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2067 enum ieee80211_band band)
2069 if (band == IEEE80211_BAND_5GHZ) {
2070 priv->staging_rxon.flags &=
2071 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2072 | RXON_FLG_CCK_MSK);
2073 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2075 /* Copied from iwl3945_bg_post_associate() */
2076 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2077 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2079 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2081 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2082 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2084 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2085 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2086 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2091 * initialize rxon structure with default values from eeprom
2093 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
2096 const struct iwl_channel_info *ch_info;
2098 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2101 case NL80211_IFTYPE_AP:
2102 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2105 case NL80211_IFTYPE_STATION:
2106 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2107 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2110 case NL80211_IFTYPE_ADHOC:
2111 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2112 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2113 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2114 RXON_FILTER_ACCEPT_GRP_MSK;
2117 case NL80211_IFTYPE_MONITOR:
2118 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2119 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2120 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2123 IWL_ERROR("Unsupported interface type %d\n", mode);
2128 /* TODO: Figure out when short_preamble would be set and cache from
2130 if (!hw_to_local(priv->hw)->short_preamble)
2131 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2133 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2136 ch_info = iwl3945_get_channel_info(priv, priv->band,
2137 le16_to_cpu(priv->active_rxon.channel));
2140 ch_info = &priv->channel_info[0];
2143 * in some case A channels are all non IBSS
2144 * in this case force B/G channel
2146 if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
2147 ch_info = &priv->channel_info[0];
2149 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2150 if (is_channel_a_band(ch_info))
2151 priv->band = IEEE80211_BAND_5GHZ;
2153 priv->band = IEEE80211_BAND_2GHZ;
2155 iwl3945_set_flags_for_phymode(priv, priv->band);
2157 priv->staging_rxon.ofdm_basic_rates =
2158 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2159 priv->staging_rxon.cck_basic_rates =
2160 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2163 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2165 if (mode == NL80211_IFTYPE_ADHOC) {
2166 const struct iwl_channel_info *ch_info;
2168 ch_info = iwl3945_get_channel_info(priv,
2170 le16_to_cpu(priv->staging_rxon.channel));
2172 if (!ch_info || !is_channel_ibss(ch_info)) {
2173 IWL_ERROR("channel %d not IBSS channel\n",
2174 le16_to_cpu(priv->staging_rxon.channel));
2179 iwl3945_connection_init_rx_config(priv, mode);
2180 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2182 iwl3945_clear_stations_table(priv);
2184 /* don't commit rxon if rf-kill is on*/
2185 if (!iwl3945_is_ready_rf(priv))
2188 cancel_delayed_work(&priv->scan_check);
2189 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2190 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2191 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2195 iwl3945_commit_rxon(priv);
2200 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2201 struct ieee80211_tx_info *info,
2202 struct iwl3945_cmd *cmd,
2203 struct sk_buff *skb_frag,
2206 struct iwl3945_hw_key *keyinfo =
2207 &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2209 switch (keyinfo->alg) {
2211 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2212 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2213 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2218 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2221 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2224 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2229 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2230 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2232 if (keyinfo->keylen == 13)
2233 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2235 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2237 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2238 "with key %d\n", info->control.hw_key->hw_key_idx);
2242 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2248 * handle build REPLY_TX command notification.
2250 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2251 struct iwl3945_cmd *cmd,
2252 struct ieee80211_tx_info *info,
2253 struct ieee80211_hdr *hdr,
2254 int is_unicast, u8 std_id)
2256 __le16 fc = hdr->frame_control;
2257 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2258 u8 rc_flags = info->control.rates[0].flags;
2260 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2261 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2262 tx_flags |= TX_CMD_FLG_ACK_MSK;
2263 if (ieee80211_is_mgmt(fc))
2264 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2265 if (ieee80211_is_probe_resp(fc) &&
2266 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2267 tx_flags |= TX_CMD_FLG_TSF_MSK;
2269 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2270 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2273 cmd->cmd.tx.sta_id = std_id;
2274 if (ieee80211_has_morefrags(fc))
2275 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2277 if (ieee80211_is_data_qos(fc)) {
2278 u8 *qc = ieee80211_get_qos_ctl(hdr);
2279 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2280 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2282 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2285 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2286 tx_flags |= TX_CMD_FLG_RTS_MSK;
2287 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2288 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2289 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2290 tx_flags |= TX_CMD_FLG_CTS_MSK;
2293 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2294 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2296 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2297 if (ieee80211_is_mgmt(fc)) {
2298 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2299 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2301 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2303 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2304 #ifdef CONFIG_IWL3945_LEDS
2305 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2309 cmd->cmd.tx.driver_txop = 0;
2310 cmd->cmd.tx.tx_flags = tx_flags;
2311 cmd->cmd.tx.next_frame_len = 0;
2315 * iwl3945_get_sta_id - Find station's index within station table
2317 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2320 u16 fc = le16_to_cpu(hdr->frame_control);
2322 /* If this frame is broadcast or management, use broadcast station id */
2323 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2324 is_multicast_ether_addr(hdr->addr1))
2325 return priv->hw_setting.bcast_sta_id;
2327 switch (priv->iw_mode) {
2329 /* If we are a client station in a BSS network, use the special
2330 * AP station entry (that's the only station we communicate with) */
2331 case NL80211_IFTYPE_STATION:
2334 /* If we are an AP, then find the station, or use BCAST */
2335 case NL80211_IFTYPE_AP:
2336 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2337 if (sta_id != IWL_INVALID_STATION)
2339 return priv->hw_setting.bcast_sta_id;
2341 /* If this frame is going out to an IBSS network, find the station,
2342 * or create a new station table entry */
2343 case NL80211_IFTYPE_ADHOC: {
2344 /* Create new station table entry */
2345 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2346 if (sta_id != IWL_INVALID_STATION)
2349 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2351 if (sta_id != IWL_INVALID_STATION)
2354 IWL_DEBUG_DROP("Station %pM not in station map. "
2355 "Defaulting to broadcast...\n",
2357 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2358 return priv->hw_setting.bcast_sta_id;
2360 /* If we are in monitor mode, use BCAST. This is required for
2361 * packet injection. */
2362 case NL80211_IFTYPE_MONITOR:
2363 return priv->hw_setting.bcast_sta_id;
2366 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
2367 return priv->hw_setting.bcast_sta_id;
2372 * start REPLY_TX command process
2374 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2376 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2377 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2378 struct iwl3945_tfd_frame *tfd;
2380 int txq_id = skb_get_queue_mapping(skb);
2381 struct iwl3945_tx_queue *txq = NULL;
2382 struct iwl_queue *q = NULL;
2383 dma_addr_t phys_addr;
2384 dma_addr_t txcmd_phys;
2385 struct iwl3945_cmd *out_cmd = NULL;
2386 u16 len, idx, len_org, hdr_len;
2393 u8 wait_write_ptr = 0;
2395 unsigned long flags;
2398 spin_lock_irqsave(&priv->lock, flags);
2399 if (iwl3945_is_rfkill(priv)) {
2400 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2404 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2405 IWL_ERROR("ERROR: No TX rate available.\n");
2409 unicast = !is_multicast_ether_addr(hdr->addr1);
2412 fc = hdr->frame_control;
2414 #ifdef CONFIG_IWL3945_DEBUG
2415 if (ieee80211_is_auth(fc))
2416 IWL_DEBUG_TX("Sending AUTH frame\n");
2417 else if (ieee80211_is_assoc_req(fc))
2418 IWL_DEBUG_TX("Sending ASSOC frame\n");
2419 else if (ieee80211_is_reassoc_req(fc))
2420 IWL_DEBUG_TX("Sending REASSOC frame\n");
2423 /* drop all data frame if we are not associated */
2424 if (ieee80211_is_data(fc) &&
2425 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2426 (!iwl3945_is_associated(priv) ||
2427 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2428 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2432 spin_unlock_irqrestore(&priv->lock, flags);
2434 hdr_len = ieee80211_hdrlen(fc);
2436 /* Find (or create) index into station table for destination station */
2437 sta_id = iwl3945_get_sta_id(priv, hdr);
2438 if (sta_id == IWL_INVALID_STATION) {
2439 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2444 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2446 if (ieee80211_is_data_qos(fc)) {
2447 qc = ieee80211_get_qos_ctl(hdr);
2448 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2449 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2451 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2453 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2457 /* Descriptor for chosen Tx queue */
2458 txq = &priv->txq[txq_id];
2461 spin_lock_irqsave(&priv->lock, flags);
2463 /* Set up first empty TFD within this queue's circular TFD buffer */
2464 tfd = &txq->bd[q->write_ptr];
2465 memset(tfd, 0, sizeof(*tfd));
2466 control_flags = (u32 *) tfd;
2467 idx = get_cmd_index(q, q->write_ptr, 0);
2469 /* Set up driver data for this TFD */
2470 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2471 txq->txb[q->write_ptr].skb[0] = skb;
2473 /* Init first empty entry in queue's array of Tx/cmd buffers */
2474 out_cmd = &txq->cmd[idx];
2475 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2476 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2479 * Set up the Tx-command (not MAC!) header.
2480 * Store the chosen Tx queue and TFD index within the sequence field;
2481 * after Tx, uCode's Tx response will return this value so driver can
2482 * locate the frame within the tx queue and do post-tx processing.
2484 out_cmd->hdr.cmd = REPLY_TX;
2485 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2486 INDEX_TO_SEQ(q->write_ptr)));
2488 /* Copy MAC header from skb into command buffer */
2489 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2492 * Use the first empty entry in this queue's command buffer array
2493 * to contain the Tx command and MAC header concatenated together
2494 * (payload data will be in another buffer).
2495 * Size of this varies, due to varying MAC header length.
2496 * If end is not dword aligned, we'll have 2 extra bytes at the end
2497 * of the MAC header (device reads on dword boundaries).
2498 * We'll tell device about this padding later.
2500 len = priv->hw_setting.tx_cmd_len +
2501 sizeof(struct iwl_cmd_header) + hdr_len;
2504 len = (len + 3) & ~3;
2511 /* Physical address of this Tx command's header (not MAC header!),
2512 * within command buffer array. */
2513 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2514 offsetof(struct iwl3945_cmd, hdr);
2516 /* Add buffer containing Tx command and MAC(!) header to TFD's
2518 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2520 if (info->control.hw_key)
2521 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2523 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2524 * if any (802.11 null frames have no payload). */
2525 len = skb->len - hdr_len;
2527 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2528 len, PCI_DMA_TODEVICE);
2529 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2533 /* If there is no payload, then we use only one Tx buffer */
2534 *control_flags = TFD_CTL_COUNT_SET(1);
2536 /* Else use 2 buffers.
2537 * Tell 3945 about any padding after MAC header */
2538 *control_flags = TFD_CTL_COUNT_SET(2) |
2539 TFD_CTL_PAD_SET(U32_PAD(len));
2541 /* Total # bytes to be transmitted */
2542 len = (u16)skb->len;
2543 out_cmd->cmd.tx.len = cpu_to_le16(len);
2545 /* TODO need this for burst mode later on */
2546 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2548 /* set is_hcca to 0; it probably will never be implemented */
2549 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2551 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2552 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2554 if (!ieee80211_has_morefrags(hdr->frame_control)) {
2555 txq->need_update = 1;
2557 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2560 txq->need_update = 0;
2563 iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
2564 sizeof(out_cmd->cmd.tx));
2566 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2567 ieee80211_hdrlen(fc));
2569 /* Tell device the write index *just past* this latest filled TFD */
2570 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2571 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2572 spin_unlock_irqrestore(&priv->lock, flags);
2577 if ((iwl_queue_space(q) < q->high_mark)
2578 && priv->mac80211_registered) {
2579 if (wait_write_ptr) {
2580 spin_lock_irqsave(&priv->lock, flags);
2581 txq->need_update = 1;
2582 iwl3945_tx_queue_update_write_ptr(priv, txq);
2583 spin_unlock_irqrestore(&priv->lock, flags);
2586 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2592 spin_unlock_irqrestore(&priv->lock, flags);
2597 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2599 const struct ieee80211_supported_band *sband = NULL;
2600 struct ieee80211_rate *rate;
2603 sband = iwl3945_get_band(priv, priv->band);
2605 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2609 priv->active_rate = 0;
2610 priv->active_rate_basic = 0;
2612 IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2613 sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2615 for (i = 0; i < sband->n_bitrates; i++) {
2616 rate = &sband->bitrates[i];
2617 if ((rate->hw_value < IWL_RATE_COUNT) &&
2618 !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2619 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2620 rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2621 priv->active_rate |= (1 << rate->hw_value);
2625 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2626 priv->active_rate, priv->active_rate_basic);
2629 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2630 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2633 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2634 priv->staging_rxon.cck_basic_rates =
2635 ((priv->active_rate_basic &
2636 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2638 priv->staging_rxon.cck_basic_rates =
2639 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2641 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2642 priv->staging_rxon.ofdm_basic_rates =
2643 ((priv->active_rate_basic &
2644 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2645 IWL_FIRST_OFDM_RATE) & 0xFF;
2647 priv->staging_rxon.ofdm_basic_rates =
2648 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2651 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2653 unsigned long flags;
2655 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2658 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2659 disable_radio ? "OFF" : "ON");
2661 if (disable_radio) {
2662 iwl3945_scan_cancel(priv);
2663 /* FIXME: This is a workaround for AP */
2664 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2665 spin_lock_irqsave(&priv->lock, flags);
2666 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2667 CSR_UCODE_SW_BIT_RFKILL);
2668 spin_unlock_irqrestore(&priv->lock, flags);
2669 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2670 set_bit(STATUS_RF_KILL_SW, &priv->status);
2675 spin_lock_irqsave(&priv->lock, flags);
2676 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2678 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2679 spin_unlock_irqrestore(&priv->lock, flags);
2684 spin_lock_irqsave(&priv->lock, flags);
2685 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2686 if (!iwl3945_grab_nic_access(priv))
2687 iwl3945_release_nic_access(priv);
2688 spin_unlock_irqrestore(&priv->lock, flags);
2690 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2691 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2692 "disabled by HW switch\n");
2697 queue_work(priv->workqueue, &priv->restart);
2701 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2702 u32 decrypt_res, struct ieee80211_rx_status *stats)
2705 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2707 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2710 if (!(fc & IEEE80211_FCTL_PROTECTED))
2713 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2714 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2715 case RX_RES_STATUS_SEC_TYPE_TKIP:
2716 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2717 RX_RES_STATUS_BAD_ICV_MIC)
2718 stats->flag |= RX_FLAG_MMIC_ERROR;
2719 case RX_RES_STATUS_SEC_TYPE_WEP:
2720 case RX_RES_STATUS_SEC_TYPE_CCMP:
2721 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2722 RX_RES_STATUS_DECRYPT_OK) {
2723 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2724 stats->flag |= RX_FLAG_DECRYPTED;
2733 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2735 #include "iwl-spectrum.h"
2737 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2738 #define BEACON_TIME_MASK_HIGH 0xFF000000
2739 #define TIME_UNIT 1024
2742 * extended beacon time format
2743 * time in usec will be changed into a 32-bit value in 8:24 format
2744 * the high 1 byte is the beacon counts
2745 * the lower 3 bytes is the time in usec within one beacon interval
2748 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2752 u32 interval = beacon_interval * 1024;
2754 if (!interval || !usec)
2757 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2758 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2760 return (quot << 24) + rem;
2763 /* base is usually what we get from ucode with each received frame,
2764 * the same as HW timer counter counting down
2767 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2769 u32 base_low = base & BEACON_TIME_MASK_LOW;
2770 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2771 u32 interval = beacon_interval * TIME_UNIT;
2772 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2773 (addon & BEACON_TIME_MASK_HIGH);
2775 if (base_low > addon_low)
2776 res += base_low - addon_low;
2777 else if (base_low < addon_low) {
2778 res += interval + base_low - addon_low;
2783 return cpu_to_le32(res);
2786 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
2787 struct ieee80211_measurement_params *params,
2790 struct iwl_spectrum_cmd spectrum;
2791 struct iwl_rx_packet *res;
2792 struct iwl3945_host_cmd cmd = {
2793 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2794 .data = (void *)&spectrum,
2795 .meta.flags = CMD_WANT_SKB,
2797 u32 add_time = le64_to_cpu(params->start_time);
2799 int spectrum_resp_status;
2800 int duration = le16_to_cpu(params->duration);
2802 if (iwl3945_is_associated(priv))
2804 iwl3945_usecs_to_beacons(
2805 le64_to_cpu(params->start_time) - priv->last_tsf,
2806 le16_to_cpu(priv->rxon_timing.beacon_interval));
2808 memset(&spectrum, 0, sizeof(spectrum));
2810 spectrum.channel_count = cpu_to_le16(1);
2812 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2813 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2814 cmd.len = sizeof(spectrum);
2815 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2817 if (iwl3945_is_associated(priv))
2818 spectrum.start_time =
2819 iwl3945_add_beacon_time(priv->last_beacon_time,
2821 le16_to_cpu(priv->rxon_timing.beacon_interval));
2823 spectrum.start_time = 0;
2825 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2826 spectrum.channels[0].channel = params->channel;
2827 spectrum.channels[0].type = type;
2828 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2829 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2830 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2832 rc = iwl3945_send_cmd_sync(priv, &cmd);
2836 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2837 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2838 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2842 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2843 switch (spectrum_resp_status) {
2844 case 0: /* Command will be handled */
2845 if (res->u.spectrum.id != 0xff) {
2846 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2847 res->u.spectrum.id);
2848 priv->measurement_status &= ~MEASUREMENT_READY;
2850 priv->measurement_status |= MEASUREMENT_ACTIVE;
2854 case 1: /* Command will not be handled */
2859 dev_kfree_skb_any(cmd.meta.u.skb);
2865 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
2866 struct iwl_rx_mem_buffer *rxb)
2868 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2869 struct iwl_alive_resp *palive;
2870 struct delayed_work *pwork;
2872 palive = &pkt->u.alive_frame;
2874 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2876 palive->is_valid, palive->ver_type,
2877 palive->ver_subtype);
2879 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2880 IWL_DEBUG_INFO("Initialization Alive received.\n");
2881 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2882 sizeof(struct iwl_alive_resp));
2883 pwork = &priv->init_alive_start;
2885 IWL_DEBUG_INFO("Runtime Alive received.\n");
2886 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2887 sizeof(struct iwl_alive_resp));
2888 pwork = &priv->alive_start;
2889 iwl3945_disable_events(priv);
2892 /* We delay the ALIVE response by 5ms to
2893 * give the HW RF Kill time to activate... */
2894 if (palive->is_valid == UCODE_VALID_OK)
2895 queue_delayed_work(priv->workqueue, pwork,
2896 msecs_to_jiffies(5));
2898 IWL_WARNING("uCode did not respond OK.\n");
2901 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
2902 struct iwl_rx_mem_buffer *rxb)
2904 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2906 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2910 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
2911 struct iwl_rx_mem_buffer *rxb)
2913 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2915 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2916 "seq 0x%04X ser 0x%08X\n",
2917 le32_to_cpu(pkt->u.err_resp.error_type),
2918 get_cmd_string(pkt->u.err_resp.cmd_id),
2919 pkt->u.err_resp.cmd_id,
2920 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2921 le32_to_cpu(pkt->u.err_resp.error_info));
2924 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2926 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl_rx_mem_buffer *rxb)
2928 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2929 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
2930 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2931 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2932 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2933 rxon->channel = csa->channel;
2934 priv->staging_rxon.channel = csa->channel;
2937 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
2938 struct iwl_rx_mem_buffer *rxb)
2940 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2941 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2942 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2944 if (!report->state) {
2945 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2946 "Spectrum Measure Notification: Start\n");
2950 memcpy(&priv->measure_report, report, sizeof(*report));
2951 priv->measurement_status |= MEASUREMENT_READY;
2955 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
2956 struct iwl_rx_mem_buffer *rxb)
2958 #ifdef CONFIG_IWL3945_DEBUG
2959 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2960 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2961 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2962 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2966 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
2967 struct iwl_rx_mem_buffer *rxb)
2969 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2970 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2971 "notification for %s:\n",
2972 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2973 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2974 le32_to_cpu(pkt->len));
2977 static void iwl3945_bg_beacon_update(struct work_struct *work)
2979 struct iwl3945_priv *priv =
2980 container_of(work, struct iwl3945_priv, beacon_update);
2981 struct sk_buff *beacon;
2983 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2984 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2987 IWL_ERROR("update beacon failed\n");
2991 mutex_lock(&priv->mutex);
2992 /* new beacon skb is allocated every time; dispose previous.*/
2993 if (priv->ibss_beacon)
2994 dev_kfree_skb(priv->ibss_beacon);
2996 priv->ibss_beacon = beacon;
2997 mutex_unlock(&priv->mutex);
2999 iwl3945_send_beacon_cmd(priv);
3002 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3003 struct iwl_rx_mem_buffer *rxb)
3005 #ifdef CONFIG_IWL3945_DEBUG
3006 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3007 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3008 u8 rate = beacon->beacon_notify_hdr.rate;
3010 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3011 "tsf %d %d rate %d\n",
3012 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3013 beacon->beacon_notify_hdr.failure_frame,
3014 le32_to_cpu(beacon->ibss_mgr_status),
3015 le32_to_cpu(beacon->high_tsf),
3016 le32_to_cpu(beacon->low_tsf), rate);
3019 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
3020 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3021 queue_work(priv->workqueue, &priv->beacon_update);
3024 /* Service response to REPLY_SCAN_CMD (0x80) */
3025 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3026 struct iwl_rx_mem_buffer *rxb)
3028 #ifdef CONFIG_IWL3945_DEBUG
3029 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3030 struct iwl_scanreq_notification *notif =
3031 (struct iwl_scanreq_notification *)pkt->u.raw;
3033 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3037 /* Service SCAN_START_NOTIFICATION (0x82) */
3038 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3039 struct iwl_rx_mem_buffer *rxb)
3041 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3042 struct iwl_scanstart_notification *notif =
3043 (struct iwl_scanstart_notification *)pkt->u.raw;
3044 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3045 IWL_DEBUG_SCAN("Scan start: "
3047 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3049 notif->band ? "bg" : "a",
3051 notif->tsf_low, notif->status, notif->beacon_timer);
3054 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3055 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3056 struct iwl_rx_mem_buffer *rxb)
3058 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3059 struct iwl_scanresults_notification *notif =
3060 (struct iwl_scanresults_notification *)pkt->u.raw;
3062 IWL_DEBUG_SCAN("Scan ch.res: "
3064 "(TSF: 0x%08X:%08X) - %d "
3065 "elapsed=%lu usec (%dms since last)\n",
3067 notif->band ? "bg" : "a",
3068 le32_to_cpu(notif->tsf_high),
3069 le32_to_cpu(notif->tsf_low),
3070 le32_to_cpu(notif->statistics[0]),
3071 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3072 jiffies_to_msecs(elapsed_jiffies
3073 (priv->last_scan_jiffies, jiffies)));
3075 priv->last_scan_jiffies = jiffies;
3076 priv->next_scan_jiffies = 0;
3079 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3080 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3081 struct iwl_rx_mem_buffer *rxb)
3083 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3084 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3086 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3087 scan_notif->scanned_channels,
3088 scan_notif->tsf_low,
3089 scan_notif->tsf_high, scan_notif->status);
3091 /* The HW is no longer scanning */
3092 clear_bit(STATUS_SCAN_HW, &priv->status);
3094 /* The scan completion notification came in, so kill that timer... */
3095 cancel_delayed_work(&priv->scan_check);
3097 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3098 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3100 jiffies_to_msecs(elapsed_jiffies
3101 (priv->scan_pass_start, jiffies)));
3103 /* Remove this scanned band from the list of pending
3104 * bands to scan, band G precedes A in order of scanning
3105 * as seen in iwl3945_bg_request_scan */
3106 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3107 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3108 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
3109 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3111 /* If a request to abort was given, or the scan did not succeed
3112 * then we reset the scan state machine and terminate,
3113 * re-queuing another scan if one has been requested */
3114 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3115 IWL_DEBUG_INFO("Aborted scan completed.\n");
3116 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3118 /* If there are more bands on this scan pass reschedule */
3119 if (priv->scan_bands > 0)
3123 priv->last_scan_jiffies = jiffies;
3124 priv->next_scan_jiffies = 0;
3125 IWL_DEBUG_INFO("Setting scan to off\n");
3127 clear_bit(STATUS_SCANNING, &priv->status);
3129 IWL_DEBUG_INFO("Scan took %dms\n",
3130 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3132 queue_work(priv->workqueue, &priv->scan_completed);
3137 priv->scan_pass_start = jiffies;
3138 queue_work(priv->workqueue, &priv->request_scan);
3141 /* Handle notification from uCode that card's power state is changing
3142 * due to software, hardware, or critical temperature RFKILL */
3143 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3144 struct iwl_rx_mem_buffer *rxb)
3146 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3147 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3148 unsigned long status = priv->status;
3150 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3151 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3152 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3154 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3155 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3157 if (flags & HW_CARD_DISABLED)
3158 set_bit(STATUS_RF_KILL_HW, &priv->status);
3160 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3163 if (flags & SW_CARD_DISABLED)
3164 set_bit(STATUS_RF_KILL_SW, &priv->status);
3166 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3168 iwl3945_scan_cancel(priv);
3170 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3171 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3172 (test_bit(STATUS_RF_KILL_SW, &status) !=
3173 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3174 queue_work(priv->workqueue, &priv->rf_kill);
3176 wake_up_interruptible(&priv->wait_command_queue);
3180 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3182 * Setup the RX handlers for each of the reply types sent from the uCode
3185 * This function chains into the hardware specific files for them to setup
3186 * any hardware specific handlers as well.
3188 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3190 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3191 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3192 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3193 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3194 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3195 iwl3945_rx_spectrum_measure_notif;
3196 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3197 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3198 iwl3945_rx_pm_debug_statistics_notif;
3199 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3202 * The same handler is used for both the REPLY to a discrete
3203 * statistics request from the host as well as for the periodic
3204 * statistics notifications (after received beacons) from the uCode.
3206 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3207 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3209 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3210 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3211 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3212 iwl3945_rx_scan_results_notif;
3213 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3214 iwl3945_rx_scan_complete_notif;
3215 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3217 /* Set up hardware specific Rx handlers */
3218 iwl3945_hw_rx_handler_setup(priv);
3222 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3223 * When FW advances 'R' index, all entries between old and new 'R' index
3224 * need to be reclaimed.
3226 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3227 int txq_id, int index)
3229 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3230 struct iwl_queue *q = &txq->q;
3233 if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3234 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3235 "is out of range [0-%d] %d %d.\n", txq_id,
3236 index, q->n_bd, q->write_ptr, q->read_ptr);
3240 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3241 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3243 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3244 q->write_ptr, q->read_ptr);
3245 queue_work(priv->workqueue, &priv->restart);
3254 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3255 * @rxb: Rx buffer to reclaim
3257 * If an Rx buffer has an async callback associated with it the callback
3258 * will be executed. The attached skb (if present) will only be freed
3259 * if the callback returns 1
3261 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3262 struct iwl_rx_mem_buffer *rxb)
3264 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3265 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3266 int txq_id = SEQ_TO_QUEUE(sequence);
3267 int index = SEQ_TO_INDEX(sequence);
3268 int huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3270 struct iwl3945_cmd *cmd;
3272 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3274 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3275 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3277 /* Input error checking is done when commands are added to queue. */
3278 if (cmd->meta.flags & CMD_WANT_SKB) {
3279 cmd->meta.source->u.skb = rxb->skb;
3281 } else if (cmd->meta.u.callback &&
3282 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3285 iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3287 if (!(cmd->meta.flags & CMD_ASYNC)) {
3288 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3289 wake_up_interruptible(&priv->wait_command_queue);
3293 /************************** RX-FUNCTIONS ****************************/
3295 * Rx theory of operation
3297 * The host allocates 32 DMA target addresses and passes the host address
3298 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3302 * The host/firmware share two index registers for managing the Rx buffers.
3304 * The READ index maps to the first position that the firmware may be writing
3305 * to -- the driver can read up to (but not including) this position and get
3307 * The READ index is managed by the firmware once the card is enabled.
3309 * The WRITE index maps to the last position the driver has read from -- the
3310 * position preceding WRITE is the last slot the firmware can place a packet.
3312 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3315 * During initialization, the host sets up the READ queue position to the first
3316 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3318 * When the firmware places a packet in a buffer, it will advance the READ index
3319 * and fire the RX interrupt. The driver can then query the READ index and
3320 * process as many packets as possible, moving the WRITE index forward as it
3321 * resets the Rx queue buffers with new memory.
3323 * The management in the driver is as follows:
3324 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3325 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3326 * to replenish the iwl->rxq->rx_free.
3327 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3328 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3329 * 'processed' and 'read' driver indexes as well)
3330 * + A received packet is processed and handed to the kernel network stack,
3331 * detached from the iwl->rxq. The driver 'processed' index is updated.
3332 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3333 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3334 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3335 * were enough free buffers and RX_STALLED is set it is cleared.
3340 * iwl3945_rx_queue_alloc() Allocates rx_free
3341 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
3342 * iwl3945_rx_queue_restock
3343 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3344 * queue, updates firmware pointers, and updates
3345 * the WRITE index. If insufficient rx_free buffers
3346 * are available, schedules iwl3945_rx_replenish
3348 * -- enable interrupts --
3349 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
3350 * READ INDEX, detaching the SKB from the pool.
3351 * Moves the packet buffer from queue to rx_used.
3352 * Calls iwl3945_rx_queue_restock to refill any empty
3359 * iwl3945_rx_queue_space - Return number of free slots available in queue.
3361 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3363 int s = q->read - q->write;
3366 /* keep some buffer to not confuse full and empty queue */
3374 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3376 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3380 unsigned long flags;
3382 spin_lock_irqsave(&q->lock, flags);
3384 if (q->need_update == 0)
3387 /* If power-saving is in use, make sure device is awake */
3388 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3389 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3391 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3392 iwl3945_set_bit(priv, CSR_GP_CNTRL,
3393 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3397 rc = iwl3945_grab_nic_access(priv);
3401 /* Device expects a multiple of 8 */
3402 iwl3945_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3404 iwl3945_release_nic_access(priv);
3406 /* Else device is assumed to be awake */
3408 /* Device expects a multiple of 8 */
3409 iwl3945_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3415 spin_unlock_irqrestore(&q->lock, flags);
3420 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3422 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3423 dma_addr_t dma_addr)
3425 return cpu_to_le32((u32)dma_addr);
3429 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3431 * If there are slots in the RX queue that need to be restocked,
3432 * and we have free pre-allocated buffers, fill the ranks as much
3433 * as we can, pulling from rx_free.
3435 * This moves the 'write' index forward to catch up with 'processed', and
3436 * also updates the memory address in the firmware to reference the new
3439 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3441 struct iwl3945_rx_queue *rxq = &priv->rxq;
3442 struct list_head *element;
3443 struct iwl_rx_mem_buffer *rxb;
3444 unsigned long flags;
3447 spin_lock_irqsave(&rxq->lock, flags);
3448 write = rxq->write & ~0x7;
3449 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3450 /* Get next free Rx buffer, remove from free list */
3451 element = rxq->rx_free.next;
3452 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3455 /* Point to Rx buffer via next RBD in circular buffer */
3456 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
3457 rxq->queue[rxq->write] = rxb;
3458 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3461 spin_unlock_irqrestore(&rxq->lock, flags);
3462 /* If the pre-allocated buffer pool is dropping low, schedule to
3464 if (rxq->free_count <= RX_LOW_WATERMARK)
3465 queue_work(priv->workqueue, &priv->rx_replenish);
3468 /* If we've added more space for the firmware to place data, tell it.
3469 * Increment device's write pointer in multiples of 8. */
3470 if ((write != (rxq->write & ~0x7))
3471 || (abs(rxq->write - rxq->read) > 7)) {
3472 spin_lock_irqsave(&rxq->lock, flags);
3473 rxq->need_update = 1;
3474 spin_unlock_irqrestore(&rxq->lock, flags);
3475 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3484 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3486 * When moving to rx_free an SKB is allocated for the slot.
3488 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3489 * This is called as a scheduled work item (except for during initialization)
3491 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3493 struct iwl3945_rx_queue *rxq = &priv->rxq;
3494 struct list_head *element;
3495 struct iwl_rx_mem_buffer *rxb;
3496 unsigned long flags;
3497 spin_lock_irqsave(&rxq->lock, flags);
3498 while (!list_empty(&rxq->rx_used)) {
3499 element = rxq->rx_used.next;
3500 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3502 /* Alloc a new receive buffer */
3504 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3506 if (net_ratelimit())
3507 printk(KERN_CRIT DRV_NAME
3508 ": Can not allocate SKB buffers\n");
3509 /* We don't reschedule replenish work here -- we will
3510 * call the restock method and if it still needs
3511 * more buffers it will schedule replenish */
3515 /* If radiotap head is required, reserve some headroom here.
3516 * The physical head count is a variable rx_stats->phy_count.
3517 * We reserve 4 bytes here. Plus these extra bytes, the
3518 * headroom of the physical head should be enough for the
3519 * radiotap head that iwl3945 supported. See iwl3945_rt.
3521 skb_reserve(rxb->skb, 4);
3523 priv->alloc_rxb_skb++;
3526 /* Get physical address of RB/SKB */
3527 rxb->real_dma_addr =
3528 pci_map_single(priv->pci_dev, rxb->skb->data,
3529 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3530 list_add_tail(&rxb->list, &rxq->rx_free);
3533 spin_unlock_irqrestore(&rxq->lock, flags);
3537 * this should be called while priv->lock is locked
3539 static void __iwl3945_rx_replenish(void *data)
3541 struct iwl3945_priv *priv = data;
3543 iwl3945_rx_allocate(priv);
3544 iwl3945_rx_queue_restock(priv);
3548 void iwl3945_rx_replenish(void *data)
3550 struct iwl3945_priv *priv = data;
3551 unsigned long flags;
3553 iwl3945_rx_allocate(priv);
3555 spin_lock_irqsave(&priv->lock, flags);
3556 iwl3945_rx_queue_restock(priv);
3557 spin_unlock_irqrestore(&priv->lock, flags);
3560 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3561 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3562 * This free routine walks the list of POOL entries and if SKB is set to
3563 * non NULL it is unmapped and freed
3565 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3568 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3569 if (rxq->pool[i].skb != NULL) {
3570 pci_unmap_single(priv->pci_dev,
3571 rxq->pool[i].real_dma_addr,
3572 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3573 dev_kfree_skb(rxq->pool[i].skb);
3577 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3582 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3584 struct iwl3945_rx_queue *rxq = &priv->rxq;
3585 struct pci_dev *dev = priv->pci_dev;
3588 spin_lock_init(&rxq->lock);
3589 INIT_LIST_HEAD(&rxq->rx_free);
3590 INIT_LIST_HEAD(&rxq->rx_used);
3592 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3593 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3597 /* Fill the rx_used queue with _all_ of the Rx buffers */
3598 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3599 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3601 /* Set us so that we have processed and used all buffers, but have
3602 * not restocked the Rx queue with fresh buffers */
3603 rxq->read = rxq->write = 0;
3604 rxq->free_count = 0;
3605 rxq->need_update = 0;
3609 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3611 unsigned long flags;
3613 spin_lock_irqsave(&rxq->lock, flags);
3614 INIT_LIST_HEAD(&rxq->rx_free);
3615 INIT_LIST_HEAD(&rxq->rx_used);
3616 /* Fill the rx_used queue with _all_ of the Rx buffers */
3617 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3618 /* In the reset function, these buffers may have been allocated
3619 * to an SKB, so we need to unmap and free potential storage */
3620 if (rxq->pool[i].skb != NULL) {
3621 pci_unmap_single(priv->pci_dev,
3622 rxq->pool[i].real_dma_addr,
3623 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3624 priv->alloc_rxb_skb--;
3625 dev_kfree_skb(rxq->pool[i].skb);
3626 rxq->pool[i].skb = NULL;
3628 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3631 /* Set us so that we have processed and used all buffers, but have
3632 * not restocked the Rx queue with fresh buffers */
3633 rxq->read = rxq->write = 0;
3634 rxq->free_count = 0;
3635 spin_unlock_irqrestore(&rxq->lock, flags);
3638 /* Convert linear signal-to-noise ratio into dB */
3639 static u8 ratio2dB[100] = {
3640 /* 0 1 2 3 4 5 6 7 8 9 */
3641 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3642 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3643 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3644 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3645 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3646 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3647 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3648 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3649 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3650 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3653 /* Calculates a relative dB value from a ratio of linear
3654 * (i.e. not dB) signal levels.
3655 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3656 int iwl3945_calc_db_from_ratio(int sig_ratio)
3658 /* 1000:1 or higher just report as 60 dB */
3659 if (sig_ratio >= 1000)
3662 /* 100:1 or higher, divide by 10 and use table,
3663 * add 20 dB to make up for divide by 10 */
3664 if (sig_ratio >= 100)
3665 return 20 + (int)ratio2dB[sig_ratio/10];
3667 /* We shouldn't see this */
3671 /* Use table for ratios 1:1 - 99:1 */
3672 return (int)ratio2dB[sig_ratio];
3675 #define PERFECT_RSSI (-20) /* dBm */
3676 #define WORST_RSSI (-95) /* dBm */
3677 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3679 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3680 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3681 * about formulas used below. */
3682 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3685 int degradation = PERFECT_RSSI - rssi_dbm;
3687 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3688 * as indicator; formula is (signal dbm - noise dbm).
3689 * SNR at or above 40 is a great signal (100%).
3690 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3691 * Weakest usable signal is usually 10 - 15 dB SNR. */
3693 if (rssi_dbm - noise_dbm >= 40)
3695 else if (rssi_dbm < noise_dbm)
3697 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3699 /* Else use just the signal level.
3700 * This formula is a least squares fit of data points collected and
3701 * compared with a reference system that had a percentage (%) display
3702 * for signal quality. */
3704 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3705 (15 * RSSI_RANGE + 62 * degradation)) /
3706 (RSSI_RANGE * RSSI_RANGE);
3710 else if (sig_qual < 1)
3717 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3719 * Uses the priv->rx_handlers callback function array to invoke
3720 * the appropriate handlers, including command responses,
3721 * frame-received notifications, and other notifications.
3723 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3725 struct iwl_rx_mem_buffer *rxb;
3726 struct iwl_rx_packet *pkt;
3727 struct iwl3945_rx_queue *rxq = &priv->rxq;
3730 unsigned long flags;
3734 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3735 * buffer that the driver may process (last buffer filled by ucode). */
3736 r = iwl3945_hw_get_rx_read(priv);
3739 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3741 /* Rx interrupt, but nothing sent from uCode */
3743 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3746 rxb = rxq->queue[i];
3748 /* If an RXB doesn't have a Rx queue slot associated with it,
3749 * then a bug has been introduced in the queue refilling
3750 * routines -- catch it here */
3751 BUG_ON(rxb == NULL);
3753 rxq->queue[i] = NULL;
3755 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3757 PCI_DMA_FROMDEVICE);
3758 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3760 /* Reclaim a command buffer only if this packet is a response
3761 * to a (driver-originated) command.
3762 * If the packet (e.g. Rx frame) originated from uCode,
3763 * there is no command buffer to reclaim.
3764 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3765 * but apparently a few don't get set; catch them here. */
3766 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3767 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3768 (pkt->hdr.cmd != REPLY_TX);
3770 /* Based on type of command response or notification,
3771 * handle those that need handling via function in
3772 * rx_handlers table. See iwl3945_setup_rx_handlers() */
3773 if (priv->rx_handlers[pkt->hdr.cmd]) {
3774 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3775 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3776 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3777 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3779 /* No handling needed */
3780 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3781 "r %d i %d No handler needed for %s, 0x%02x\n",
3782 r, i, get_cmd_string(pkt->hdr.cmd),
3787 /* Invoke any callbacks, transfer the skb to caller, and
3788 * fire off the (possibly) blocking iwl3945_send_cmd()
3789 * as we reclaim the driver command queue */
3790 if (rxb && rxb->skb)
3791 iwl3945_tx_cmd_complete(priv, rxb);
3793 IWL_WARNING("Claim null rxb?\n");
3796 /* For now we just don't re-use anything. We can tweak this
3797 * later to try and re-use notification packets and SKBs that
3798 * fail to Rx correctly */
3799 if (rxb->skb != NULL) {
3800 priv->alloc_rxb_skb--;
3801 dev_kfree_skb_any(rxb->skb);
3805 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3806 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3807 spin_lock_irqsave(&rxq->lock, flags);
3808 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3809 spin_unlock_irqrestore(&rxq->lock, flags);
3810 i = (i + 1) & RX_QUEUE_MASK;
3811 /* If there are a lot of unused frames,
3812 * restock the Rx queue so ucode won't assert. */
3817 __iwl3945_rx_replenish(priv);
3823 /* Backtrack one entry */
3825 iwl3945_rx_queue_restock(priv);
3829 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3831 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
3832 struct iwl3945_tx_queue *txq)
3836 int txq_id = txq->q.id;
3838 if (txq->need_update == 0)
3841 /* if we're trying to save power */
3842 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3843 /* wake up nic if it's powered down ...
3844 * uCode will wake up, and interrupt us again, so next
3845 * time we'll skip this part. */
3846 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3848 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3849 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3850 iwl3945_set_bit(priv, CSR_GP_CNTRL,
3851 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3855 /* restore this queue's parameters in nic hardware. */
3856 rc = iwl3945_grab_nic_access(priv);
3859 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3860 txq->q.write_ptr | (txq_id << 8));
3861 iwl3945_release_nic_access(priv);
3863 /* else not in power-save mode, uCode will never sleep when we're
3864 * trying to tx (during RFKILL, we're not trying to tx). */
3866 iwl3945_write32(priv, HBUS_TARG_WRPTR,
3867 txq->q.write_ptr | (txq_id << 8));
3869 txq->need_update = 0;
3874 #ifdef CONFIG_IWL3945_DEBUG
3875 static void iwl3945_print_rx_config_cmd(struct iwl3945_priv *priv,
3876 struct iwl3945_rxon_cmd *rxon)
3878 IWL_DEBUG_RADIO("RX CONFIG:\n");
3879 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3880 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3881 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3882 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3883 le32_to_cpu(rxon->filter_flags));
3884 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3885 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3886 rxon->ofdm_basic_rates);
3887 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3888 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3889 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3890 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3894 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
3896 IWL_DEBUG_ISR("Enabling interrupts\n");
3897 set_bit(STATUS_INT_ENABLED, &priv->status);
3898 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3902 /* call this function to flush any scheduled tasklet */
3903 static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
3905 /* wait to make sure we flush pending tasklet*/
3906 synchronize_irq(priv->pci_dev->irq);
3907 tasklet_kill(&priv->irq_tasklet);
3911 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
3913 clear_bit(STATUS_INT_ENABLED, &priv->status);
3915 /* disable interrupts from uCode/NIC to host */
3916 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
3918 /* acknowledge/clear/reset any interrupts still pending
3919 * from uCode or flow handler (Rx/Tx DMA) */
3920 iwl3945_write32(priv, CSR_INT, 0xffffffff);
3921 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3922 IWL_DEBUG_ISR("Disabled interrupts\n");
3925 static const char *desc_lookup(int i)
3933 return "BAD_CHECKSUM";
3935 return "NMI_INTERRUPT";
3939 return "FATAL_ERROR";
3945 #define ERROR_START_OFFSET (1 * sizeof(u32))
3946 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3948 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
3951 u32 desc, time, count, base, data1;
3952 u32 blink1, blink2, ilink1, ilink2;
3955 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3957 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3958 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3962 rc = iwl3945_grab_nic_access(priv);
3964 IWL_WARNING("Can not read from adapter at this time.\n");
3968 count = iwl3945_read_targ_mem(priv, base);
3970 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3971 IWL_ERROR("Start IWL Error Log Dump:\n");
3972 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3975 IWL_ERROR("Desc Time asrtPC blink2 "
3976 "ilink1 nmiPC Line\n");
3977 for (i = ERROR_START_OFFSET;
3978 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3979 i += ERROR_ELEM_SIZE) {
3980 desc = iwl3945_read_targ_mem(priv, base + i);
3982 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3984 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3986 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3988 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3990 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3992 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3995 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3996 desc_lookup(desc), desc, time, blink1, blink2,
3997 ilink1, ilink2, data1);
4000 iwl3945_release_nic_access(priv);
4004 #define EVENT_START_OFFSET (6 * sizeof(u32))
4007 * iwl3945_print_event_log - Dump error event log to syslog
4009 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4011 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4012 u32 num_events, u32 mode)
4015 u32 base; /* SRAM byte address of event log header */
4016 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4017 u32 ptr; /* SRAM byte address of log data */
4018 u32 ev, time, data; /* event log data */
4020 if (num_events == 0)
4023 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4026 event_size = 2 * sizeof(u32);
4028 event_size = 3 * sizeof(u32);
4030 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4032 /* "time" is actually "data" for mode 0 (no timestamp).
4033 * place event id # at far right for easier visual parsing. */
4034 for (i = 0; i < num_events; i++) {
4035 ev = iwl3945_read_targ_mem(priv, ptr);
4037 time = iwl3945_read_targ_mem(priv, ptr);
4040 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4042 data = iwl3945_read_targ_mem(priv, ptr);
4044 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4049 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4052 u32 base; /* SRAM byte address of event log header */
4053 u32 capacity; /* event log capacity in # entries */
4054 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4055 u32 num_wraps; /* # times uCode wrapped to top of log */
4056 u32 next_entry; /* index of next entry to be written by uCode */
4057 u32 size; /* # entries that we'll print */
4059 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4060 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4061 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4065 rc = iwl3945_grab_nic_access(priv);
4067 IWL_WARNING("Can not read from adapter at this time.\n");
4071 /* event log header */
4072 capacity = iwl3945_read_targ_mem(priv, base);
4073 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4074 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4075 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4077 size = num_wraps ? capacity : next_entry;
4079 /* bail out if nothing in log */
4081 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4082 iwl3945_release_nic_access(priv);
4086 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4089 /* if uCode has wrapped back to top of log, start at the oldest entry,
4090 * i.e the next one that uCode would fill. */
4092 iwl3945_print_event_log(priv, next_entry,
4093 capacity - next_entry, mode);
4095 /* (then/else) start at top of log */
4096 iwl3945_print_event_log(priv, 0, next_entry, mode);
4098 iwl3945_release_nic_access(priv);
4102 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4104 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4106 /* Set the FW error flag -- cleared on iwl3945_down */
4107 set_bit(STATUS_FW_ERROR, &priv->status);
4109 /* Cancel currently queued command. */
4110 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4112 #ifdef CONFIG_IWL3945_DEBUG
4113 if (priv->debug_level & IWL_DL_FW_ERRORS) {
4114 iwl3945_dump_nic_error_log(priv);
4115 iwl3945_dump_nic_event_log(priv);
4116 iwl3945_print_rx_config_cmd(priv, &priv->staging_rxon);
4120 wake_up_interruptible(&priv->wait_command_queue);
4122 /* Keep the restart process from trying to send host
4123 * commands by clearing the INIT status bit */
4124 clear_bit(STATUS_READY, &priv->status);
4126 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4127 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4128 "Restarting adapter due to uCode error.\n");
4130 if (iwl3945_is_associated(priv)) {
4131 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4132 sizeof(priv->recovery_rxon));
4133 priv->error_recovering = 1;
4135 queue_work(priv->workqueue, &priv->restart);
4139 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4141 unsigned long flags;
4143 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4144 sizeof(priv->staging_rxon));
4145 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4146 iwl3945_commit_rxon(priv);
4148 iwl3945_add_station(priv, priv->bssid, 1, 0);
4150 spin_lock_irqsave(&priv->lock, flags);
4151 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4152 priv->error_recovering = 0;
4153 spin_unlock_irqrestore(&priv->lock, flags);
4156 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4158 u32 inta, handled = 0;
4160 unsigned long flags;
4161 #ifdef CONFIG_IWL3945_DEBUG
4165 spin_lock_irqsave(&priv->lock, flags);
4167 /* Ack/clear/reset pending uCode interrupts.
4168 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4169 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4170 inta = iwl3945_read32(priv, CSR_INT);
4171 iwl3945_write32(priv, CSR_INT, inta);
4173 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4174 * Any new interrupts that happen after this, either while we're
4175 * in this tasklet, or later, will show up in next ISR/tasklet. */
4176 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4177 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4179 #ifdef CONFIG_IWL3945_DEBUG
4180 if (priv->debug_level & IWL_DL_ISR) {
4181 /* just for debug */
4182 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4183 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4184 inta, inta_mask, inta_fh);
4188 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4189 * atomic, make sure that inta covers all the interrupts that
4190 * we've discovered, even if FH interrupt came in just after
4191 * reading CSR_INT. */
4192 if (inta_fh & CSR39_FH_INT_RX_MASK)
4193 inta |= CSR_INT_BIT_FH_RX;
4194 if (inta_fh & CSR39_FH_INT_TX_MASK)
4195 inta |= CSR_INT_BIT_FH_TX;
4197 /* Now service all interrupt bits discovered above. */
4198 if (inta & CSR_INT_BIT_HW_ERR) {
4199 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4201 /* Tell the device to stop sending interrupts */
4202 iwl3945_disable_interrupts(priv);
4204 iwl3945_irq_handle_error(priv);
4206 handled |= CSR_INT_BIT_HW_ERR;
4208 spin_unlock_irqrestore(&priv->lock, flags);
4213 #ifdef CONFIG_IWL3945_DEBUG
4214 if (priv->debug_level & (IWL_DL_ISR)) {
4215 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4216 if (inta & CSR_INT_BIT_SCD)
4217 IWL_DEBUG_ISR("Scheduler finished to transmit "
4218 "the frame/frames.\n");
4220 /* Alive notification via Rx interrupt will do the real work */
4221 if (inta & CSR_INT_BIT_ALIVE)
4222 IWL_DEBUG_ISR("Alive interrupt\n");
4225 /* Safely ignore these bits for debug checks below */
4226 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4228 /* Error detected by uCode */
4229 if (inta & CSR_INT_BIT_SW_ERR) {
4230 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4232 iwl3945_irq_handle_error(priv);
4233 handled |= CSR_INT_BIT_SW_ERR;
4236 /* uCode wakes up after power-down sleep */
4237 if (inta & CSR_INT_BIT_WAKEUP) {
4238 IWL_DEBUG_ISR("Wakeup interrupt\n");
4239 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4240 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4241 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4242 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4243 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4244 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4245 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4247 handled |= CSR_INT_BIT_WAKEUP;
4250 /* All uCode command responses, including Tx command responses,
4251 * Rx "responses" (frame-received notification), and other
4252 * notifications from uCode come through here*/
4253 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4254 iwl3945_rx_handle(priv);
4255 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4258 if (inta & CSR_INT_BIT_FH_TX) {
4259 IWL_DEBUG_ISR("Tx interrupt\n");
4261 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4262 if (!iwl3945_grab_nic_access(priv)) {
4263 iwl3945_write_direct32(priv, FH39_TCSR_CREDIT
4264 (FH39_SRVC_CHNL), 0x0);
4265 iwl3945_release_nic_access(priv);
4267 handled |= CSR_INT_BIT_FH_TX;
4270 if (inta & ~handled)
4271 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4273 if (inta & ~CSR_INI_SET_MASK) {
4274 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4275 inta & ~CSR_INI_SET_MASK);
4276 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4279 /* Re-enable all interrupts */
4280 /* only Re-enable if disabled by irq */
4281 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4282 iwl3945_enable_interrupts(priv);
4284 #ifdef CONFIG_IWL3945_DEBUG
4285 if (priv->debug_level & (IWL_DL_ISR)) {
4286 inta = iwl3945_read32(priv, CSR_INT);
4287 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4288 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4289 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4290 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4293 spin_unlock_irqrestore(&priv->lock, flags);
4296 static irqreturn_t iwl3945_isr(int irq, void *data)
4298 struct iwl3945_priv *priv = data;
4299 u32 inta, inta_mask;
4304 spin_lock(&priv->lock);
4306 /* Disable (but don't clear!) interrupts here to avoid
4307 * back-to-back ISRs and sporadic interrupts from our NIC.
4308 * If we have something to service, the tasklet will re-enable ints.
4309 * If we *don't* have something, we'll re-enable before leaving here. */
4310 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4311 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4313 /* Discover which interrupts are active/pending */
4314 inta = iwl3945_read32(priv, CSR_INT);
4315 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4317 /* Ignore interrupt if there's nothing in NIC to service.
4318 * This may be due to IRQ shared with another device,
4319 * or due to sporadic interrupts thrown from our NIC. */
4320 if (!inta && !inta_fh) {
4321 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4325 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4326 /* Hardware disappeared */
4327 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
4331 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4332 inta, inta_mask, inta_fh);
4334 inta &= ~CSR_INT_BIT_SCD;
4336 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4337 if (likely(inta || inta_fh))
4338 tasklet_schedule(&priv->irq_tasklet);
4340 spin_unlock(&priv->lock);
4345 /* re-enable interrupts here since we don't have anything to service. */
4346 /* only Re-enable if disabled by irq */
4347 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4348 iwl3945_enable_interrupts(priv);
4349 spin_unlock(&priv->lock);
4353 /************************** EEPROM BANDS ****************************
4355 * The iwl3945_eeprom_band definitions below provide the mapping from the
4356 * EEPROM contents to the specific channel number supported for each
4359 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4360 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4361 * The specific geography and calibration information for that channel
4362 * is contained in the eeprom map itself.
4364 * During init, we copy the eeprom information and channel map
4365 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4367 * channel_map_24/52 provides the index in the channel_info array for a
4368 * given channel. We have to have two separate maps as there is channel
4369 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4372 * A value of 0xff stored in the channel_map indicates that the channel
4373 * is not supported by the hardware at all.
4375 * A value of 0xfe in the channel_map indicates that the channel is not
4376 * valid for Tx with the current hardware. This means that
4377 * while the system can tune and receive on a given channel, it may not
4378 * be able to associate or transmit any frames on that
4379 * channel. There is no corresponding channel information for that
4382 *********************************************************************/
4385 static const u8 iwl3945_eeprom_band_1[14] = {
4386 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4390 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
4391 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4394 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
4395 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4398 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
4399 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4402 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
4403 145, 149, 153, 157, 161, 165
4406 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4407 int *eeprom_ch_count,
4408 const struct iwl_eeprom_channel
4410 const u8 **eeprom_ch_index)
4413 case 1: /* 2.4GHz band */
4414 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4415 *eeprom_ch_info = priv->eeprom.band_1_channels;
4416 *eeprom_ch_index = iwl3945_eeprom_band_1;
4418 case 2: /* 4.9GHz band */
4419 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4420 *eeprom_ch_info = priv->eeprom.band_2_channels;
4421 *eeprom_ch_index = iwl3945_eeprom_band_2;
4423 case 3: /* 5.2GHz band */
4424 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4425 *eeprom_ch_info = priv->eeprom.band_3_channels;
4426 *eeprom_ch_index = iwl3945_eeprom_band_3;
4428 case 4: /* 5.5GHz band */
4429 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4430 *eeprom_ch_info = priv->eeprom.band_4_channels;
4431 *eeprom_ch_index = iwl3945_eeprom_band_4;
4433 case 5: /* 5.7GHz band */
4434 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4435 *eeprom_ch_info = priv->eeprom.band_5_channels;
4436 *eeprom_ch_index = iwl3945_eeprom_band_5;
4445 * iwl3945_get_channel_info - Find driver's private channel info
4447 * Based on band and channel number.
4449 const struct iwl_channel_info *
4450 iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4451 enum ieee80211_band band, u16 channel)
4456 case IEEE80211_BAND_5GHZ:
4457 for (i = 14; i < priv->channel_count; i++) {
4458 if (priv->channel_info[i].channel == channel)
4459 return &priv->channel_info[i];
4463 case IEEE80211_BAND_2GHZ:
4464 if (channel >= 1 && channel <= 14)
4465 return &priv->channel_info[channel - 1];
4467 case IEEE80211_NUM_BANDS:
4474 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4478 * iwl3945_init_channel_map - Set up driver's info for all possible channels
4480 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4482 int eeprom_ch_count = 0;
4483 const u8 *eeprom_ch_index = NULL;
4484 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
4486 struct iwl_channel_info *ch_info;
4488 if (priv->channel_count) {
4489 IWL_DEBUG_INFO("Channel map already initialized.\n");
4493 if (priv->eeprom.version < 0x2f) {
4494 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4495 priv->eeprom.version);
4499 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4501 priv->channel_count =
4502 ARRAY_SIZE(iwl3945_eeprom_band_1) +
4503 ARRAY_SIZE(iwl3945_eeprom_band_2) +
4504 ARRAY_SIZE(iwl3945_eeprom_band_3) +
4505 ARRAY_SIZE(iwl3945_eeprom_band_4) +
4506 ARRAY_SIZE(iwl3945_eeprom_band_5);
4508 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4510 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
4511 priv->channel_count, GFP_KERNEL);
4512 if (!priv->channel_info) {
4513 IWL_ERROR("Could not allocate channel_info\n");
4514 priv->channel_count = 0;
4518 ch_info = priv->channel_info;
4520 /* Loop through the 5 EEPROM bands adding them in order to the
4521 * channel map we maintain (that contains additional information than
4522 * what just in the EEPROM) */
4523 for (band = 1; band <= 5; band++) {
4525 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4526 &eeprom_ch_info, &eeprom_ch_index);
4528 /* Loop through each band adding each of the channels */
4529 for (ch = 0; ch < eeprom_ch_count; ch++) {
4530 ch_info->channel = eeprom_ch_index[ch];
4531 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4532 IEEE80211_BAND_5GHZ;
4534 /* permanently store EEPROM's channel regulatory flags
4535 * and max power in channel info database. */
4536 ch_info->eeprom = eeprom_ch_info[ch];
4538 /* Copy the run-time flags so they are there even on
4539 * invalid channels */
4540 ch_info->flags = eeprom_ch_info[ch].flags;
4542 if (!(is_channel_valid(ch_info))) {
4543 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4547 is_channel_a_band(ch_info) ?
4553 /* Initialize regulatory-based run-time data */
4554 ch_info->max_power_avg = ch_info->curr_txpow =
4555 eeprom_ch_info[ch].max_power_avg;
4556 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4557 ch_info->min_power = 0;
4559 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4560 " %ddBm): Ad-Hoc %ssupported\n",
4562 is_channel_a_band(ch_info) ?
4564 CHECK_AND_PRINT(VALID),
4565 CHECK_AND_PRINT(IBSS),
4566 CHECK_AND_PRINT(ACTIVE),
4567 CHECK_AND_PRINT(RADAR),
4568 CHECK_AND_PRINT(WIDE),
4569 CHECK_AND_PRINT(DFS),
4570 eeprom_ch_info[ch].flags,
4571 eeprom_ch_info[ch].max_power_avg,
4572 ((eeprom_ch_info[ch].
4573 flags & EEPROM_CHANNEL_IBSS)
4574 && !(eeprom_ch_info[ch].
4575 flags & EEPROM_CHANNEL_RADAR))
4578 /* Set the user_txpower_limit to the highest power
4579 * supported by any channel */
4580 if (eeprom_ch_info[ch].max_power_avg >
4581 priv->user_txpower_limit)
4582 priv->user_txpower_limit =
4583 eeprom_ch_info[ch].max_power_avg;
4589 /* Set up txpower settings in driver for all channels */
4590 if (iwl3945_txpower_set_from_eeprom(priv))
4597 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4599 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4601 kfree(priv->channel_info);
4602 priv->channel_count = 0;
4605 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4606 * sending probe req. This should be set long enough to hear probe responses
4607 * from more than one AP. */
4608 #define IWL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
4609 #define IWL_ACTIVE_DWELL_TIME_52 (20)
4611 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4612 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4614 /* For faster active scanning, scan will move to the next channel if fewer than
4615 * PLCP_QUIET_THRESH packets are heard on this channel within
4616 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4617 * time if it's a quiet channel (nothing responded to our probe, and there's
4618 * no other traffic).
4619 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4620 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4621 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */
4623 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4624 * Must be set longer than active dwell time.
4625 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4626 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4627 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4628 #define IWL_PASSIVE_DWELL_BASE (100)
4629 #define IWL_CHANNEL_TUNE_TIME 5
4631 #define IWL_SCAN_PROBE_MASK(n) (BIT(n) | (BIT(n) - BIT(1)))
4633 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4634 enum ieee80211_band band,
4637 if (band == IEEE80211_BAND_5GHZ)
4638 return IWL_ACTIVE_DWELL_TIME_52 +
4639 IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4641 return IWL_ACTIVE_DWELL_TIME_24 +
4642 IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4645 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4646 enum ieee80211_band band)
4648 u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4649 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4650 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4652 if (iwl3945_is_associated(priv)) {
4653 /* If we're associated, we clamp the maximum passive
4654 * dwell time to be 98% of the beacon interval (minus
4655 * 2 * channel tune time) */
4656 passive = priv->beacon_int;
4657 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4658 passive = IWL_PASSIVE_DWELL_BASE;
4659 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4665 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4666 enum ieee80211_band band,
4667 u8 is_active, u8 n_probes,
4668 struct iwl3945_scan_channel *scan_ch)
4670 const struct ieee80211_channel *channels = NULL;
4671 const struct ieee80211_supported_band *sband;
4672 const struct iwl_channel_info *ch_info;
4673 u16 passive_dwell = 0;
4674 u16 active_dwell = 0;
4677 sband = iwl3945_get_band(priv, band);
4681 channels = sband->channels;
4683 active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4684 passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4686 if (passive_dwell <= active_dwell)
4687 passive_dwell = active_dwell + 1;
4689 for (i = 0, added = 0; i < sband->n_channels; i++) {
4690 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4693 scan_ch->channel = channels[i].hw_value;
4695 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4696 if (!is_channel_valid(ch_info)) {
4697 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4702 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4703 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4704 /* If passive , set up for auto-switch
4705 * and use long active_dwell time.
4707 if (!is_active || is_channel_passive(ch_info) ||
4708 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4709 scan_ch->type = 0; /* passive */
4710 if (IWL_UCODE_API(priv->ucode_ver) == 1)
4711 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4713 scan_ch->type = 1; /* active */
4716 /* Set direct probe bits. These may be used both for active
4717 * scan channels (probes gets sent right away),
4718 * or for passive channels (probes get se sent only after
4719 * hearing clear Rx packet).*/
4720 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4722 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4724 /* uCode v1 does not allow setting direct probe bits on
4725 * passive channel. */
4726 if ((scan_ch->type & 1) && n_probes)
4727 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4730 /* Set txpower levels to defaults */
4731 scan_ch->tpc.dsp_atten = 110;
4732 /* scan_pwr_info->tpc.dsp_atten; */
4734 /*scan_pwr_info->tpc.tx_gain; */
4735 if (band == IEEE80211_BAND_5GHZ)
4736 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4738 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4739 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4741 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4745 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4747 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4748 (scan_ch->type & 1) ?
4749 active_dwell : passive_dwell);
4755 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4759 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
4760 struct ieee80211_rate *rates)
4764 for (i = 0; i < IWL_RATE_COUNT; i++) {
4765 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4766 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4767 rates[i].hw_value_short = i;
4769 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4771 * If CCK != 1M then set short preamble rate flag.
4773 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4774 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4780 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4782 static int iwl3945_init_geos(struct iwl3945_priv *priv)
4784 struct iwl_channel_info *ch;
4785 struct ieee80211_supported_band *sband;
4786 struct ieee80211_channel *channels;
4787 struct ieee80211_channel *geo_ch;
4788 struct ieee80211_rate *rates;
4791 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4792 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4793 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4794 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4798 channels = kzalloc(sizeof(struct ieee80211_channel) *
4799 priv->channel_count, GFP_KERNEL);
4803 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4810 /* 5.2GHz channels start after the 2.4GHz channels */
4811 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4812 sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4814 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4815 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4817 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4818 sband->channels = channels;
4820 sband->bitrates = rates;
4821 sband->n_bitrates = IWL_RATE_COUNT;
4823 priv->ieee_channels = channels;
4824 priv->ieee_rates = rates;
4826 iwl3945_init_hw_rates(priv, rates);
4828 for (i = 0; i < priv->channel_count; i++) {
4829 ch = &priv->channel_info[i];
4831 /* FIXME: might be removed if scan is OK*/
4832 if (!is_channel_valid(ch))
4835 if (is_channel_a_band(ch))
4836 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4838 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4840 geo_ch = &sband->channels[sband->n_channels++];
4842 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4843 geo_ch->max_power = ch->max_power_avg;
4844 geo_ch->max_antenna_gain = 0xff;
4845 geo_ch->hw_value = ch->channel;
4847 if (is_channel_valid(ch)) {
4848 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4849 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4851 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4852 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4854 if (ch->flags & EEPROM_CHANNEL_RADAR)
4855 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4857 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4858 priv->max_channel_txpower_limit =
4861 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4864 /* Save flags for reg domain usage */
4865 geo_ch->orig_flags = geo_ch->flags;
4867 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4868 ch->channel, geo_ch->center_freq,
4869 is_channel_a_band(ch) ? "5.2" : "2.4",
4870 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4871 "restricted" : "valid",
4875 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4876 priv->cfg->sku & IWL_SKU_A) {
4877 printk(KERN_INFO DRV_NAME
4878 ": Incorrectly detected BG card as ABG. Please send "
4879 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4880 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4881 priv->cfg->sku &= ~IWL_SKU_A;
4884 printk(KERN_INFO DRV_NAME
4885 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4886 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4887 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4889 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4890 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4891 &priv->bands[IEEE80211_BAND_2GHZ];
4892 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4893 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4894 &priv->bands[IEEE80211_BAND_5GHZ];
4896 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4902 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4904 static void iwl3945_free_geos(struct iwl3945_priv *priv)
4906 kfree(priv->ieee_channels);
4907 kfree(priv->ieee_rates);
4908 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4911 /******************************************************************************
4913 * uCode download functions
4915 ******************************************************************************/
4917 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
4919 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4920 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4921 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4922 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4923 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4924 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4928 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4929 * looking at all data.
4931 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
4938 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4940 rc = iwl3945_grab_nic_access(priv);
4944 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4945 IWL39_RTC_INST_LOWER_BOUND);
4948 for (; len > 0; len -= sizeof(u32), image++) {
4949 /* read data comes through single port, auto-incr addr */
4950 /* NOTE: Use the debugless read so we don't flood kernel log
4951 * if IWL_DL_IO is set */
4952 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4953 if (val != le32_to_cpu(*image)) {
4954 IWL_ERROR("uCode INST section is invalid at "
4955 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4956 save_len - len, val, le32_to_cpu(*image));
4964 iwl3945_release_nic_access(priv);
4967 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4974 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4975 * using sample data 100 bytes apart. If these sample points are good,
4976 * it's a pretty good bet that everything between them is good, too.
4978 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
4985 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4987 rc = iwl3945_grab_nic_access(priv);
4991 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4992 /* read data comes through single port, auto-incr addr */
4993 /* NOTE: Use the debugless read so we don't flood kernel log
4994 * if IWL_DL_IO is set */
4995 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4996 i + IWL39_RTC_INST_LOWER_BOUND);
4997 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4998 if (val != le32_to_cpu(*image)) {
4999 #if 0 /* Enable this if you want to see details */
5000 IWL_ERROR("uCode INST section is invalid at "
5001 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5011 iwl3945_release_nic_access(priv);
5018 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5019 * and verify its contents
5021 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5028 image = (__le32 *)priv->ucode_boot.v_addr;
5029 len = priv->ucode_boot.len;
5030 rc = iwl3945_verify_inst_sparse(priv, image, len);
5032 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5036 /* Try initialize */
5037 image = (__le32 *)priv->ucode_init.v_addr;
5038 len = priv->ucode_init.len;
5039 rc = iwl3945_verify_inst_sparse(priv, image, len);
5041 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5045 /* Try runtime/protocol */
5046 image = (__le32 *)priv->ucode_code.v_addr;
5047 len = priv->ucode_code.len;
5048 rc = iwl3945_verify_inst_sparse(priv, image, len);
5050 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5054 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5056 /* Since nothing seems to match, show first several data entries in
5057 * instruction SRAM, so maybe visual inspection will give a clue.
5058 * Selection of bootstrap image (vs. other images) is arbitrary. */
5059 image = (__le32 *)priv->ucode_boot.v_addr;
5060 len = priv->ucode_boot.len;
5061 rc = iwl3945_verify_inst_full(priv, image, len);
5067 /* check contents of special bootstrap uCode SRAM */
5068 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5070 __le32 *image = priv->ucode_boot.v_addr;
5071 u32 len = priv->ucode_boot.len;
5075 IWL_DEBUG_INFO("Begin verify bsm\n");
5077 /* verify BSM SRAM contents */
5078 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5079 for (reg = BSM_SRAM_LOWER_BOUND;
5080 reg < BSM_SRAM_LOWER_BOUND + len;
5081 reg += sizeof(u32), image++) {
5082 val = iwl3945_read_prph(priv, reg);
5083 if (val != le32_to_cpu(*image)) {
5084 IWL_ERROR("BSM uCode verification failed at "
5085 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5086 BSM_SRAM_LOWER_BOUND,
5087 reg - BSM_SRAM_LOWER_BOUND, len,
5088 val, le32_to_cpu(*image));
5093 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5099 * iwl3945_load_bsm - Load bootstrap instructions
5103 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5104 * in special SRAM that does not power down during RFKILL. When powering back
5105 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5106 * the bootstrap program into the on-board processor, and starts it.
5108 * The bootstrap program loads (via DMA) instructions and data for a new
5109 * program from host DRAM locations indicated by the host driver in the
5110 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5113 * When initializing the NIC, the host driver points the BSM to the
5114 * "initialize" uCode image. This uCode sets up some internal data, then
5115 * notifies host via "initialize alive" that it is complete.
5117 * The host then replaces the BSM_DRAM_* pointer values to point to the
5118 * normal runtime uCode instructions and a backup uCode data cache buffer
5119 * (filled initially with starting data values for the on-board processor),
5120 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5121 * which begins normal operation.
5123 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5124 * the backup data cache in DRAM before SRAM is powered down.
5126 * When powering back up, the BSM loads the bootstrap program. This reloads
5127 * the runtime uCode instructions and the backup data cache into SRAM,
5128 * and re-launches the runtime uCode from where it left off.
5130 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5132 __le32 *image = priv->ucode_boot.v_addr;
5133 u32 len = priv->ucode_boot.len;
5143 IWL_DEBUG_INFO("Begin load bsm\n");
5145 /* make sure bootstrap program is no larger than BSM's SRAM size */
5146 if (len > IWL39_MAX_BSM_SIZE)
5149 /* Tell bootstrap uCode where to find the "Initialize" uCode
5150 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5151 * NOTE: iwl3945_initialize_alive_start() will replace these values,
5152 * after the "initialize" uCode has run, to point to
5153 * runtime/protocol instructions and backup data cache. */
5154 pinst = priv->ucode_init.p_addr;
5155 pdata = priv->ucode_init_data.p_addr;
5156 inst_len = priv->ucode_init.len;
5157 data_len = priv->ucode_init_data.len;
5159 rc = iwl3945_grab_nic_access(priv);
5163 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5164 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5165 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5166 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5168 /* Fill BSM memory with bootstrap instructions */
5169 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5170 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5171 reg_offset += sizeof(u32), image++)
5172 _iwl3945_write_prph(priv, reg_offset,
5173 le32_to_cpu(*image));
5175 rc = iwl3945_verify_bsm(priv);
5177 iwl3945_release_nic_access(priv);
5181 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5182 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5183 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5184 IWL39_RTC_INST_LOWER_BOUND);
5185 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5187 /* Load bootstrap code into instruction SRAM now,
5188 * to prepare to load "initialize" uCode */
5189 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5190 BSM_WR_CTRL_REG_BIT_START);
5192 /* Wait for load of bootstrap uCode to finish */
5193 for (i = 0; i < 100; i++) {
5194 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5195 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5200 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5202 IWL_ERROR("BSM write did not complete!\n");
5206 /* Enable future boot loads whenever power management unit triggers it
5207 * (e.g. when powering back up after power-save shutdown) */
5208 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5209 BSM_WR_CTRL_REG_BIT_START_EN);
5211 iwl3945_release_nic_access(priv);
5216 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5218 /* Remove all resets to allow NIC to operate */
5219 iwl3945_write32(priv, CSR_RESET, 0);
5223 * iwl3945_read_ucode - Read uCode images from disk file.
5225 * Copy into buffers for card to fetch via bus-mastering
5227 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5229 struct iwl_ucode *ucode;
5230 int ret = -EINVAL, index;
5231 const struct firmware *ucode_raw;
5232 /* firmware file name contains uCode/driver compatibility version */
5233 const char *name_pre = priv->cfg->fw_name_pre;
5234 const unsigned int api_max = priv->cfg->ucode_api_max;
5235 const unsigned int api_min = priv->cfg->ucode_api_min;
5239 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
5241 /* Ask kernel firmware_class module to get the boot firmware off disk.
5242 * request_firmware() is synchronous, file is in memory on return. */
5243 for (index = api_max; index >= api_min; index--) {
5244 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
5245 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
5247 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5254 if (index < api_max)
5255 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
5257 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5258 buf, ucode_raw->size);
5266 /* Make sure that we got at least our header! */
5267 if (ucode_raw->size < sizeof(*ucode)) {
5268 IWL_ERROR("File size way too small!\n");
5273 /* Data from ucode file: header followed by uCode images */
5274 ucode = (void *)ucode_raw->data;
5276 priv->ucode_ver = le32_to_cpu(ucode->ver);
5277 api_ver = IWL_UCODE_API(priv->ucode_ver);
5278 inst_size = le32_to_cpu(ucode->inst_size);
5279 data_size = le32_to_cpu(ucode->data_size);
5280 init_size = le32_to_cpu(ucode->init_size);
5281 init_data_size = le32_to_cpu(ucode->init_data_size);
5282 boot_size = le32_to_cpu(ucode->boot_size);
5284 /* api_ver should match the api version forming part of the
5285 * firmware filename ... but we don't check for that and only rely
5286 * on the API version read from firware header from here on forward */
5288 if (api_ver < api_min || api_ver > api_max) {
5289 IWL_ERROR("Driver unable to support your firmware API. "
5290 "Driver supports v%u, firmware is v%u.\n",
5292 priv->ucode_ver = 0;
5296 if (api_ver != api_max)
5297 IWL_ERROR("Firmware has old API version. Expected %u, "
5298 "got %u. New firmware can be obtained "
5299 "from http://www.intellinuxwireless.org.\n",
5302 printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
5303 IWL_UCODE_MAJOR(priv->ucode_ver),
5304 IWL_UCODE_MINOR(priv->ucode_ver),
5305 IWL_UCODE_API(priv->ucode_ver),
5306 IWL_UCODE_SERIAL(priv->ucode_ver));
5307 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5309 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5310 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5311 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5312 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5313 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5316 /* Verify size of file vs. image size info in file's header */
5317 if (ucode_raw->size < sizeof(*ucode) +
5318 inst_size + data_size + init_size +
5319 init_data_size + boot_size) {
5321 IWL_DEBUG_INFO("uCode file size %d too small\n",
5322 (int)ucode_raw->size);
5327 /* Verify that uCode images will fit in card's SRAM */
5328 if (inst_size > IWL39_MAX_INST_SIZE) {
5329 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5335 if (data_size > IWL39_MAX_DATA_SIZE) {
5336 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5341 if (init_size > IWL39_MAX_INST_SIZE) {
5342 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5347 if (init_data_size > IWL39_MAX_DATA_SIZE) {
5348 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5353 if (boot_size > IWL39_MAX_BSM_SIZE) {
5354 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5360 /* Allocate ucode buffers for card's bus-master loading ... */
5362 /* Runtime instructions and 2 copies of data:
5363 * 1) unmodified from disk
5364 * 2) backup cache for save/restore during power-downs */
5365 priv->ucode_code.len = inst_size;
5366 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5368 priv->ucode_data.len = data_size;
5369 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5371 priv->ucode_data_backup.len = data_size;
5372 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5374 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5375 !priv->ucode_data_backup.v_addr)
5378 /* Initialization instructions and data */
5379 if (init_size && init_data_size) {
5380 priv->ucode_init.len = init_size;
5381 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5383 priv->ucode_init_data.len = init_data_size;
5384 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5386 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5390 /* Bootstrap (instructions only, no data) */
5392 priv->ucode_boot.len = boot_size;
5393 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5395 if (!priv->ucode_boot.v_addr)
5399 /* Copy images into buffers for card's bus-master reads ... */
5401 /* Runtime instructions (first block of data in file) */
5402 src = &ucode->data[0];
5403 len = priv->ucode_code.len;
5404 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5405 memcpy(priv->ucode_code.v_addr, src, len);
5406 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5407 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5409 /* Runtime data (2nd block)
5410 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
5411 src = &ucode->data[inst_size];
5412 len = priv->ucode_data.len;
5413 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5414 memcpy(priv->ucode_data.v_addr, src, len);
5415 memcpy(priv->ucode_data_backup.v_addr, src, len);
5417 /* Initialization instructions (3rd block) */
5419 src = &ucode->data[inst_size + data_size];
5420 len = priv->ucode_init.len;
5421 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5423 memcpy(priv->ucode_init.v_addr, src, len);
5426 /* Initialization data (4th block) */
5427 if (init_data_size) {
5428 src = &ucode->data[inst_size + data_size + init_size];
5429 len = priv->ucode_init_data.len;
5430 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5432 memcpy(priv->ucode_init_data.v_addr, src, len);
5435 /* Bootstrap instructions (5th block) */
5436 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5437 len = priv->ucode_boot.len;
5438 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5440 memcpy(priv->ucode_boot.v_addr, src, len);
5442 /* We have our copies now, allow OS release its copies */
5443 release_firmware(ucode_raw);
5447 IWL_ERROR("failed to allocate pci memory\n");
5449 iwl3945_dealloc_ucode_pci(priv);
5452 release_firmware(ucode_raw);
5460 * iwl3945_set_ucode_ptrs - Set uCode address location
5462 * Tell initialization uCode where to find runtime uCode.
5464 * BSM registers initially contain pointers to initialization uCode.
5465 * We need to replace them to load runtime uCode inst and data,
5466 * and to save runtime data when powering down.
5468 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5473 unsigned long flags;
5475 /* bits 31:0 for 3945 */
5476 pinst = priv->ucode_code.p_addr;
5477 pdata = priv->ucode_data_backup.p_addr;
5479 spin_lock_irqsave(&priv->lock, flags);
5480 rc = iwl3945_grab_nic_access(priv);
5482 spin_unlock_irqrestore(&priv->lock, flags);
5486 /* Tell bootstrap uCode where to find image to load */
5487 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5488 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5489 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5490 priv->ucode_data.len);
5492 /* Inst byte count must be last to set up, bit 31 signals uCode
5493 * that all new ptr/size info is in place */
5494 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5495 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5497 iwl3945_release_nic_access(priv);
5499 spin_unlock_irqrestore(&priv->lock, flags);
5501 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5507 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5509 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5511 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5513 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5515 /* Check alive response for "valid" sign from uCode */
5516 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5517 /* We had an error bringing up the hardware, so take it
5518 * all the way back down so we can try again */
5519 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5523 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5524 * This is a paranoid check, because we would not have gotten the
5525 * "initialize" alive if code weren't properly loaded. */
5526 if (iwl3945_verify_ucode(priv)) {
5527 /* Runtime instruction load was bad;
5528 * take it all the way back down so we can try again */
5529 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5533 /* Send pointers to protocol/runtime uCode image ... init code will
5534 * load and launch runtime uCode, which will send us another "Alive"
5536 IWL_DEBUG_INFO("Initialization Alive received.\n");
5537 if (iwl3945_set_ucode_ptrs(priv)) {
5538 /* Runtime instruction load won't happen;
5539 * take it all the way back down so we can try again */
5540 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5546 queue_work(priv->workqueue, &priv->restart);
5551 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5552 struct sk_buff *skb);
5555 * iwl3945_alive_start - called after REPLY_ALIVE notification received
5556 * from protocol/runtime uCode (initialization uCode's
5557 * Alive gets handled by iwl3945_init_alive_start()).
5559 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5562 int thermal_spin = 0;
5565 IWL_DEBUG_INFO("Runtime Alive received.\n");
5567 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5568 /* We had an error bringing up the hardware, so take it
5569 * all the way back down so we can try again */
5570 IWL_DEBUG_INFO("Alive failed.\n");
5574 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5575 * This is a paranoid check, because we would not have gotten the
5576 * "runtime" alive if code weren't properly loaded. */
5577 if (iwl3945_verify_ucode(priv)) {
5578 /* Runtime instruction load was bad;
5579 * take it all the way back down so we can try again */
5580 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5584 iwl3945_clear_stations_table(priv);
5586 rc = iwl3945_grab_nic_access(priv);
5588 IWL_WARNING("Can not read RFKILL status from adapter\n");
5592 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5593 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5594 iwl3945_release_nic_access(priv);
5597 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5598 /* if RFKILL is not on, then wait for thermal
5599 * sensor in adapter to kick in */
5600 while (iwl3945_hw_get_temperature(priv) == 0) {
5606 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5609 set_bit(STATUS_RF_KILL_HW, &priv->status);
5611 /* After the ALIVE response, we can send commands to 3945 uCode */
5612 set_bit(STATUS_ALIVE, &priv->status);
5614 /* Clear out the uCode error bit if it is set */
5615 clear_bit(STATUS_FW_ERROR, &priv->status);
5617 if (iwl3945_is_rfkill(priv))
5620 ieee80211_wake_queues(priv->hw);
5622 priv->active_rate = priv->rates_mask;
5623 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5625 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5627 if (iwl3945_is_associated(priv)) {
5628 struct iwl3945_rxon_cmd *active_rxon =
5629 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5631 memcpy(&priv->staging_rxon, &priv->active_rxon,
5632 sizeof(priv->staging_rxon));
5633 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5635 /* Initialize our rx_config data */
5636 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5637 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5640 /* Configure Bluetooth device coexistence support */
5641 iwl3945_send_bt_config(priv);
5643 /* Configure the adapter for unassociated operation */
5644 iwl3945_commit_rxon(priv);
5646 iwl3945_reg_txpower_periodic(priv);
5648 iwl3945_led_register(priv);
5650 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5651 set_bit(STATUS_READY, &priv->status);
5652 wake_up_interruptible(&priv->wait_command_queue);
5654 if (priv->error_recovering)
5655 iwl3945_error_recovery(priv);
5657 /* reassociate for ADHOC mode */
5658 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5659 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5662 iwl3945_mac_beacon_update(priv->hw, beacon);
5668 queue_work(priv->workqueue, &priv->restart);
5671 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
5673 static void __iwl3945_down(struct iwl3945_priv *priv)
5675 unsigned long flags;
5676 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5677 struct ieee80211_conf *conf = NULL;
5679 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5681 conf = ieee80211_get_hw_conf(priv->hw);
5684 set_bit(STATUS_EXIT_PENDING, &priv->status);
5686 iwl3945_led_unregister(priv);
5687 iwl3945_clear_stations_table(priv);
5689 /* Unblock any waiting calls */
5690 wake_up_interruptible_all(&priv->wait_command_queue);
5692 /* Wipe out the EXIT_PENDING status bit if we are not actually
5693 * exiting the module */
5695 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5697 /* stop and reset the on-board processor */
5698 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5700 /* tell the device to stop sending interrupts */
5701 spin_lock_irqsave(&priv->lock, flags);
5702 iwl3945_disable_interrupts(priv);
5703 spin_unlock_irqrestore(&priv->lock, flags);
5704 iwl_synchronize_irq(priv);
5706 if (priv->mac80211_registered)
5707 ieee80211_stop_queues(priv->hw);
5709 /* If we have not previously called iwl3945_init() then
5710 * clear all bits but the RF Kill and SUSPEND bits and return */
5711 if (!iwl3945_is_init(priv)) {
5712 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5714 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5716 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5717 STATUS_GEO_CONFIGURED |
5718 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5720 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5721 STATUS_EXIT_PENDING;
5725 /* ...otherwise clear out all the status bits but the RF Kill and
5726 * SUSPEND bits and continue taking the NIC down. */
5727 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5729 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5731 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5732 STATUS_GEO_CONFIGURED |
5733 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5735 test_bit(STATUS_FW_ERROR, &priv->status) <<
5737 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5738 STATUS_EXIT_PENDING;
5740 spin_lock_irqsave(&priv->lock, flags);
5741 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5742 spin_unlock_irqrestore(&priv->lock, flags);
5744 iwl3945_hw_txq_ctx_stop(priv);
5745 iwl3945_hw_rxq_stop(priv);
5747 spin_lock_irqsave(&priv->lock, flags);
5748 if (!iwl3945_grab_nic_access(priv)) {
5749 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
5750 APMG_CLK_VAL_DMA_CLK_RQT);
5751 iwl3945_release_nic_access(priv);
5753 spin_unlock_irqrestore(&priv->lock, flags);
5757 iwl3945_hw_nic_stop_master(priv);
5758 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5759 iwl3945_hw_nic_reset(priv);
5762 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
5764 if (priv->ibss_beacon)
5765 dev_kfree_skb(priv->ibss_beacon);
5766 priv->ibss_beacon = NULL;
5768 /* clear out any free frames */
5769 iwl3945_clear_free_frames(priv);
5772 static void iwl3945_down(struct iwl3945_priv *priv)
5774 mutex_lock(&priv->mutex);
5775 __iwl3945_down(priv);
5776 mutex_unlock(&priv->mutex);
5778 iwl3945_cancel_deferred_work(priv);
5781 #define MAX_HW_RESTARTS 5
5783 static int __iwl3945_up(struct iwl3945_priv *priv)
5787 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5788 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5792 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5793 IWL_WARNING("Radio disabled by SW RF kill (module "
5798 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5799 IWL_ERROR("ucode not available for device bring up\n");
5803 /* If platform's RF_KILL switch is NOT set to KILL */
5804 if (iwl3945_read32(priv, CSR_GP_CNTRL) &
5805 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5806 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5808 set_bit(STATUS_RF_KILL_HW, &priv->status);
5809 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5810 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5815 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5817 rc = iwl3945_hw_nic_init(priv);
5819 IWL_ERROR("Unable to int nic\n");
5823 /* make sure rfkill handshake bits are cleared */
5824 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5825 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5826 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5828 /* clear (again), then enable host interrupts */
5829 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5830 iwl3945_enable_interrupts(priv);
5832 /* really make sure rfkill handshake bits are cleared */
5833 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5834 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5836 /* Copy original ucode data image from disk into backup cache.
5837 * This will be used to initialize the on-board processor's
5838 * data SRAM for a clean start when the runtime program first loads. */
5839 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5840 priv->ucode_data.len);
5842 /* We return success when we resume from suspend and rf_kill is on. */
5843 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5846 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5848 iwl3945_clear_stations_table(priv);
5850 /* load bootstrap state machine,
5851 * load bootstrap program into processor's memory,
5852 * prepare to load the "initialize" uCode */
5853 rc = iwl3945_load_bsm(priv);
5856 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5860 /* start card; "initialize" will load runtime ucode */
5861 iwl3945_nic_start(priv);
5863 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5868 set_bit(STATUS_EXIT_PENDING, &priv->status);
5869 __iwl3945_down(priv);
5870 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5872 /* tried to restart and config the device for as long as our
5873 * patience could withstand */
5874 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5879 /*****************************************************************************
5881 * Workqueue callbacks
5883 *****************************************************************************/
5885 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5887 struct iwl3945_priv *priv =
5888 container_of(data, struct iwl3945_priv, init_alive_start.work);
5890 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5893 mutex_lock(&priv->mutex);
5894 iwl3945_init_alive_start(priv);
5895 mutex_unlock(&priv->mutex);
5898 static void iwl3945_bg_alive_start(struct work_struct *data)
5900 struct iwl3945_priv *priv =
5901 container_of(data, struct iwl3945_priv, alive_start.work);
5903 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5906 mutex_lock(&priv->mutex);
5907 iwl3945_alive_start(priv);
5908 mutex_unlock(&priv->mutex);
5911 static void iwl3945_bg_rf_kill(struct work_struct *work)
5913 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
5915 wake_up_interruptible(&priv->wait_command_queue);
5917 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5920 mutex_lock(&priv->mutex);
5922 if (!iwl3945_is_rfkill(priv)) {
5923 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5924 "HW and/or SW RF Kill no longer active, restarting "
5926 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5927 queue_work(priv->workqueue, &priv->restart);
5930 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5931 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5932 "disabled by SW switch\n");
5934 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5935 "Kill switch must be turned off for "
5936 "wireless networking to work.\n");
5939 mutex_unlock(&priv->mutex);
5940 iwl3945_rfkill_set_hw_state(priv);
5943 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5945 static void iwl3945_bg_scan_check(struct work_struct *data)
5947 struct iwl3945_priv *priv =
5948 container_of(data, struct iwl3945_priv, scan_check.work);
5950 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5953 mutex_lock(&priv->mutex);
5954 if (test_bit(STATUS_SCANNING, &priv->status) ||
5955 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5956 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5957 "Scan completion watchdog resetting adapter (%dms)\n",
5958 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5960 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5961 iwl3945_send_scan_abort(priv);
5963 mutex_unlock(&priv->mutex);
5966 static void iwl3945_bg_request_scan(struct work_struct *data)
5968 struct iwl3945_priv *priv =
5969 container_of(data, struct iwl3945_priv, request_scan);
5970 struct iwl3945_host_cmd cmd = {
5971 .id = REPLY_SCAN_CMD,
5972 .len = sizeof(struct iwl3945_scan_cmd),
5973 .meta.flags = CMD_SIZE_HUGE,
5976 struct iwl3945_scan_cmd *scan;
5977 struct ieee80211_conf *conf = NULL;
5979 enum ieee80211_band band;
5980 DECLARE_SSID_BUF(ssid);
5982 conf = ieee80211_get_hw_conf(priv->hw);
5984 mutex_lock(&priv->mutex);
5986 if (!iwl3945_is_ready(priv)) {
5987 IWL_WARNING("request scan called when driver not ready.\n");
5991 /* Make sure the scan wasn't canceled before this queued work
5992 * was given the chance to run... */
5993 if (!test_bit(STATUS_SCANNING, &priv->status))
5996 /* This should never be called or scheduled if there is currently
5997 * a scan active in the hardware. */
5998 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5999 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6000 "Ignoring second request.\n");
6005 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6006 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6010 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6011 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6015 if (iwl3945_is_rfkill(priv)) {
6016 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6020 if (!test_bit(STATUS_READY, &priv->status)) {
6021 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6025 if (!priv->scan_bands) {
6026 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6031 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6032 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6039 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6041 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6042 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6044 if (iwl3945_is_associated(priv)) {
6047 u32 suspend_time = 100;
6048 u32 scan_suspend_time = 100;
6049 unsigned long flags;
6051 IWL_DEBUG_INFO("Scanning while associated...\n");
6053 spin_lock_irqsave(&priv->lock, flags);
6054 interval = priv->beacon_int;
6055 spin_unlock_irqrestore(&priv->lock, flags);
6057 scan->suspend_time = 0;
6058 scan->max_out_time = cpu_to_le32(200 * 1024);
6060 interval = suspend_time;
6062 * suspend time format:
6063 * 0-19: beacon interval in usec (time before exec.)
6065 * 24-31: number of beacons (suspend between channels)
6068 extra = (suspend_time / interval) << 24;
6069 scan_suspend_time = 0xFF0FFFFF &
6070 (extra | ((suspend_time % interval) * 1024));
6072 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6073 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6074 scan_suspend_time, interval);
6077 /* We should add the ability for user to lock to PASSIVE ONLY */
6078 if (priv->one_direct_scan) {
6080 ("Kicking off one direct scan for '%s'\n",
6081 print_ssid(ssid, priv->direct_ssid,
6082 priv->direct_ssid_len));
6083 scan->direct_scan[0].id = WLAN_EID_SSID;
6084 scan->direct_scan[0].len = priv->direct_ssid_len;
6085 memcpy(scan->direct_scan[0].ssid,
6086 priv->direct_ssid, priv->direct_ssid_len);
6089 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6091 /* We don't build a direct scan probe request; the uCode will do
6092 * that based on the direct_mask added to each channel entry */
6093 scan->tx_cmd.len = cpu_to_le16(
6094 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6095 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
6096 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6097 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6098 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6100 /* flags + rate selection */
6102 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6103 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6104 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6105 scan->good_CRC_th = 0;
6106 band = IEEE80211_BAND_2GHZ;
6107 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6108 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6109 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6110 band = IEEE80211_BAND_5GHZ;
6112 IWL_WARNING("Invalid scan band count\n");
6116 /* select Rx antennas */
6117 scan->flags |= iwl3945_get_antenna_flags(priv);
6119 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
6120 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6122 scan->channel_count =
6123 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6125 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6127 if (scan->channel_count == 0) {
6128 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
6132 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6133 scan->channel_count * sizeof(struct iwl3945_scan_channel);
6135 scan->len = cpu_to_le16(cmd.len);
6137 set_bit(STATUS_SCAN_HW, &priv->status);
6138 rc = iwl3945_send_cmd_sync(priv, &cmd);
6142 queue_delayed_work(priv->workqueue, &priv->scan_check,
6143 IWL_SCAN_CHECK_WATCHDOG);
6145 mutex_unlock(&priv->mutex);
6149 /* can not perform scan make sure we clear scanning
6150 * bits from status so next scan request can be performed.
6151 * if we dont clear scanning status bit here all next scan
6154 clear_bit(STATUS_SCAN_HW, &priv->status);
6155 clear_bit(STATUS_SCANNING, &priv->status);
6157 /* inform mac80211 scan aborted */
6158 queue_work(priv->workqueue, &priv->scan_completed);
6159 mutex_unlock(&priv->mutex);
6162 static void iwl3945_bg_up(struct work_struct *data)
6164 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6166 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6169 mutex_lock(&priv->mutex);
6171 mutex_unlock(&priv->mutex);
6172 iwl3945_rfkill_set_hw_state(priv);
6175 static void iwl3945_bg_restart(struct work_struct *data)
6177 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6179 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6183 queue_work(priv->workqueue, &priv->up);
6186 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6188 struct iwl3945_priv *priv =
6189 container_of(data, struct iwl3945_priv, rx_replenish);
6191 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6194 mutex_lock(&priv->mutex);
6195 iwl3945_rx_replenish(priv);
6196 mutex_unlock(&priv->mutex);
6199 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6201 static void iwl3945_post_associate(struct iwl3945_priv *priv)
6204 struct ieee80211_conf *conf = NULL;
6206 if (priv->iw_mode == NL80211_IFTYPE_AP) {
6207 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
6212 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6213 priv->assoc_id, priv->active_rxon.bssid_addr);
6215 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6218 if (!priv->vif || !priv->is_open)
6221 iwl3945_scan_cancel_timeout(priv, 200);
6223 conf = ieee80211_get_hw_conf(priv->hw);
6225 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6226 iwl3945_commit_rxon(priv);
6228 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6229 iwl3945_setup_rxon_timing(priv);
6230 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6231 sizeof(priv->rxon_timing), &priv->rxon_timing);
6233 IWL_WARNING("REPLY_RXON_TIMING failed - "
6234 "Attempting to continue.\n");
6236 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6238 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6240 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6241 priv->assoc_id, priv->beacon_int);
6243 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6244 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6246 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6248 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6249 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6250 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6252 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6254 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6255 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6259 iwl3945_commit_rxon(priv);
6261 switch (priv->iw_mode) {
6262 case NL80211_IFTYPE_STATION:
6263 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6266 case NL80211_IFTYPE_ADHOC:
6269 iwl3945_add_station(priv, priv->bssid, 0, 0);
6270 iwl3945_sync_sta(priv, IWL_STA_ID,
6271 (priv->band == IEEE80211_BAND_5GHZ) ?
6272 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6274 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6275 iwl3945_send_beacon_cmd(priv);
6280 IWL_ERROR("%s Should not be called in %d mode\n",
6281 __func__, priv->iw_mode);
6285 iwl3945_activate_qos(priv, 0);
6287 /* we have just associated, don't start scan too early */
6288 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6291 static void iwl3945_bg_abort_scan(struct work_struct *work)
6293 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6295 if (!iwl3945_is_ready(priv))
6298 mutex_lock(&priv->mutex);
6300 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6301 iwl3945_send_scan_abort(priv);
6303 mutex_unlock(&priv->mutex);
6306 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6308 static void iwl3945_bg_scan_completed(struct work_struct *work)
6310 struct iwl3945_priv *priv =
6311 container_of(work, struct iwl3945_priv, scan_completed);
6313 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6315 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6318 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6319 iwl3945_mac_config(priv->hw, 0);
6321 ieee80211_scan_completed(priv->hw);
6323 /* Since setting the TXPOWER may have been deferred while
6324 * performing the scan, fire one off */
6325 mutex_lock(&priv->mutex);
6326 iwl3945_hw_reg_send_txpower(priv);
6327 mutex_unlock(&priv->mutex);
6330 /*****************************************************************************
6332 * mac80211 entry point functions
6334 *****************************************************************************/
6336 #define UCODE_READY_TIMEOUT (2 * HZ)
6338 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6340 struct iwl3945_priv *priv = hw->priv;
6343 IWL_DEBUG_MAC80211("enter\n");
6345 if (pci_enable_device(priv->pci_dev)) {
6346 IWL_ERROR("Fail to pci_enable_device\n");
6349 pci_restore_state(priv->pci_dev);
6350 pci_enable_msi(priv->pci_dev);
6352 ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6355 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6356 goto out_disable_msi;
6359 /* we should be verifying the device is ready to be opened */
6360 mutex_lock(&priv->mutex);
6362 memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6363 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6364 * ucode filename and max sizes are card-specific. */
6366 if (!priv->ucode_code.len) {
6367 ret = iwl3945_read_ucode(priv);
6369 IWL_ERROR("Could not read microcode: %d\n", ret);
6370 mutex_unlock(&priv->mutex);
6371 goto out_release_irq;
6375 ret = __iwl3945_up(priv);
6377 mutex_unlock(&priv->mutex);
6379 iwl3945_rfkill_set_hw_state(priv);
6382 goto out_release_irq;
6384 IWL_DEBUG_INFO("Start UP work.\n");
6386 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6389 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6390 * mac80211 will not be run successfully. */
6391 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6392 test_bit(STATUS_READY, &priv->status),
6393 UCODE_READY_TIMEOUT);
6395 if (!test_bit(STATUS_READY, &priv->status)) {
6396 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6397 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6399 goto out_release_irq;
6404 IWL_DEBUG_MAC80211("leave\n");
6408 free_irq(priv->pci_dev->irq, priv);
6410 pci_disable_msi(priv->pci_dev);
6411 pci_disable_device(priv->pci_dev);
6413 IWL_DEBUG_MAC80211("leave - failed\n");
6417 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6419 struct iwl3945_priv *priv = hw->priv;
6421 IWL_DEBUG_MAC80211("enter\n");
6423 if (!priv->is_open) {
6424 IWL_DEBUG_MAC80211("leave - skip\n");
6430 if (iwl3945_is_ready_rf(priv)) {
6431 /* stop mac, cancel any scan request and clear
6432 * RXON_FILTER_ASSOC_MSK BIT
6434 mutex_lock(&priv->mutex);
6435 iwl3945_scan_cancel_timeout(priv, 100);
6436 mutex_unlock(&priv->mutex);
6441 flush_workqueue(priv->workqueue);
6442 free_irq(priv->pci_dev->irq, priv);
6443 pci_disable_msi(priv->pci_dev);
6444 pci_save_state(priv->pci_dev);
6445 pci_disable_device(priv->pci_dev);
6447 IWL_DEBUG_MAC80211("leave\n");
6450 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6452 struct iwl3945_priv *priv = hw->priv;
6454 IWL_DEBUG_MAC80211("enter\n");
6456 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6457 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6459 if (iwl3945_tx_skb(priv, skb))
6460 dev_kfree_skb_any(skb);
6462 IWL_DEBUG_MAC80211("leave\n");
6463 return NETDEV_TX_OK;
6466 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6467 struct ieee80211_if_init_conf *conf)
6469 struct iwl3945_priv *priv = hw->priv;
6470 unsigned long flags;
6472 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6475 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6479 spin_lock_irqsave(&priv->lock, flags);
6480 priv->vif = conf->vif;
6481 priv->iw_mode = conf->type;
6483 spin_unlock_irqrestore(&priv->lock, flags);
6485 mutex_lock(&priv->mutex);
6487 if (conf->mac_addr) {
6488 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6489 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6492 if (iwl3945_is_ready(priv))
6493 iwl3945_set_mode(priv, conf->type);
6495 mutex_unlock(&priv->mutex);
6497 IWL_DEBUG_MAC80211("leave\n");
6502 * iwl3945_mac_config - mac80211 config callback
6504 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6505 * be set inappropriately and the driver currently sets the hardware up to
6506 * use it whenever needed.
6508 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6510 struct iwl3945_priv *priv = hw->priv;
6511 const struct iwl_channel_info *ch_info;
6512 struct ieee80211_conf *conf = &hw->conf;
6513 unsigned long flags;
6516 mutex_lock(&priv->mutex);
6517 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6519 if (!iwl3945_is_ready(priv)) {
6520 IWL_DEBUG_MAC80211("leave - not ready\n");
6525 if (unlikely(!iwl3945_param_disable_hw_scan &&
6526 test_bit(STATUS_SCANNING, &priv->status))) {
6527 IWL_DEBUG_MAC80211("leave - scanning\n");
6528 set_bit(STATUS_CONF_PENDING, &priv->status);
6529 mutex_unlock(&priv->mutex);
6533 spin_lock_irqsave(&priv->lock, flags);
6535 ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6536 conf->channel->hw_value);
6537 if (!is_channel_valid(ch_info)) {
6538 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6539 conf->channel->hw_value, conf->channel->band);
6540 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6541 spin_unlock_irqrestore(&priv->lock, flags);
6546 iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6548 iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6550 /* The list of supported rates and rate mask can be different
6551 * for each phymode; since the phymode may have changed, reset
6552 * the rate mask to what mac80211 lists */
6553 iwl3945_set_rate(priv);
6555 spin_unlock_irqrestore(&priv->lock, flags);
6557 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6558 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6559 iwl3945_hw_channel_switch(priv, conf->channel);
6564 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6566 if (!conf->radio_enabled) {
6567 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6571 if (iwl3945_is_rfkill(priv)) {
6572 IWL_DEBUG_MAC80211("leave - RF kill\n");
6577 iwl3945_set_rate(priv);
6579 if (memcmp(&priv->active_rxon,
6580 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6581 iwl3945_commit_rxon(priv);
6583 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6585 IWL_DEBUG_MAC80211("leave\n");
6588 clear_bit(STATUS_CONF_PENDING, &priv->status);
6589 mutex_unlock(&priv->mutex);
6593 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6597 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6600 /* The following should be done only at AP bring up */
6601 if (!(iwl3945_is_associated(priv))) {
6603 /* RXON - unassoc (to set timing command) */
6604 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6605 iwl3945_commit_rxon(priv);
6608 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6609 iwl3945_setup_rxon_timing(priv);
6610 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6611 sizeof(priv->rxon_timing), &priv->rxon_timing);
6613 IWL_WARNING("REPLY_RXON_TIMING failed - "
6614 "Attempting to continue.\n");
6616 /* FIXME: what should be the assoc_id for AP? */
6617 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6618 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6619 priv->staging_rxon.flags |=
6620 RXON_FLG_SHORT_PREAMBLE_MSK;
6622 priv->staging_rxon.flags &=
6623 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6625 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6626 if (priv->assoc_capability &
6627 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6628 priv->staging_rxon.flags |=
6629 RXON_FLG_SHORT_SLOT_MSK;
6631 priv->staging_rxon.flags &=
6632 ~RXON_FLG_SHORT_SLOT_MSK;
6634 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6635 priv->staging_rxon.flags &=
6636 ~RXON_FLG_SHORT_SLOT_MSK;
6638 /* restore RXON assoc */
6639 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6640 iwl3945_commit_rxon(priv);
6641 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
6643 iwl3945_send_beacon_cmd(priv);
6645 /* FIXME - we need to add code here to detect a totally new
6646 * configuration, reset the AP, unassoc, rxon timing, assoc,
6647 * clear sta table, add BCAST sta... */
6650 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6651 struct ieee80211_vif *vif,
6652 struct ieee80211_if_conf *conf)
6654 struct iwl3945_priv *priv = hw->priv;
6660 if (priv->vif != vif) {
6661 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6665 /* handle this temporarily here */
6666 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6667 conf->changed & IEEE80211_IFCC_BEACON) {
6668 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6671 mutex_lock(&priv->mutex);
6672 rc = iwl3945_mac_beacon_update(hw, beacon);
6673 mutex_unlock(&priv->mutex);
6678 if (!iwl3945_is_alive(priv))
6681 mutex_lock(&priv->mutex);
6684 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6687 * very dubious code was here; the probe filtering flag is never set:
6689 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6690 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6693 if (priv->iw_mode == NL80211_IFTYPE_AP) {
6695 conf->bssid = priv->mac_addr;
6696 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6697 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6700 if (priv->ibss_beacon)
6701 dev_kfree_skb(priv->ibss_beacon);
6703 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6706 if (iwl3945_is_rfkill(priv))
6709 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6710 !is_multicast_ether_addr(conf->bssid)) {
6711 /* If there is currently a HW scan going on in the background
6712 * then we need to cancel it else the RXON below will fail. */
6713 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6714 IWL_WARNING("Aborted scan still in progress "
6716 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6717 mutex_unlock(&priv->mutex);
6720 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6722 /* TODO: Audit driver for usage of these members and see
6723 * if mac80211 deprecates them (priv->bssid looks like it
6724 * shouldn't be there, but I haven't scanned the IBSS code
6725 * to verify) - jpk */
6726 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6728 if (priv->iw_mode == NL80211_IFTYPE_AP)
6729 iwl3945_config_ap(priv);
6731 rc = iwl3945_commit_rxon(priv);
6732 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6733 iwl3945_add_station(priv,
6734 priv->active_rxon.bssid_addr, 1, 0);
6738 iwl3945_scan_cancel_timeout(priv, 100);
6739 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6740 iwl3945_commit_rxon(priv);
6744 IWL_DEBUG_MAC80211("leave\n");
6745 mutex_unlock(&priv->mutex);
6750 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6751 unsigned int changed_flags,
6752 unsigned int *total_flags,
6753 int mc_count, struct dev_addr_list *mc_list)
6755 struct iwl3945_priv *priv = hw->priv;
6756 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
6758 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6759 changed_flags, *total_flags);
6761 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6762 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6763 *filter_flags |= RXON_FILTER_PROMISC_MSK;
6765 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6767 if (changed_flags & FIF_ALLMULTI) {
6768 if (*total_flags & FIF_ALLMULTI)
6769 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6771 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6773 if (changed_flags & FIF_CONTROL) {
6774 if (*total_flags & FIF_CONTROL)
6775 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6777 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6779 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6780 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6781 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6783 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6786 /* We avoid iwl_commit_rxon here to commit the new filter flags
6787 * since mac80211 will call ieee80211_hw_config immediately.
6788 * (mc_list is not supported at this time). Otherwise, we need to
6789 * queue a background iwl_commit_rxon work.
6792 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6793 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6796 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6797 struct ieee80211_if_init_conf *conf)
6799 struct iwl3945_priv *priv = hw->priv;
6801 IWL_DEBUG_MAC80211("enter\n");
6803 mutex_lock(&priv->mutex);
6805 if (iwl3945_is_ready_rf(priv)) {
6806 iwl3945_scan_cancel_timeout(priv, 100);
6807 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6808 iwl3945_commit_rxon(priv);
6810 if (priv->vif == conf->vif) {
6812 memset(priv->bssid, 0, ETH_ALEN);
6814 mutex_unlock(&priv->mutex);
6816 IWL_DEBUG_MAC80211("leave\n");
6819 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6821 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6822 struct ieee80211_vif *vif,
6823 struct ieee80211_bss_conf *bss_conf,
6826 struct iwl3945_priv *priv = hw->priv;
6828 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6830 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6831 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6832 bss_conf->use_short_preamble);
6833 if (bss_conf->use_short_preamble)
6834 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6836 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6839 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6840 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6841 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6842 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6844 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6847 if (changes & BSS_CHANGED_ASSOC) {
6848 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6849 /* This should never happen as this function should
6850 * never be called from interrupt context. */
6851 if (WARN_ON_ONCE(in_interrupt()))
6853 if (bss_conf->assoc) {
6854 priv->assoc_id = bss_conf->aid;
6855 priv->beacon_int = bss_conf->beacon_int;
6856 priv->timestamp = bss_conf->timestamp;
6857 priv->assoc_capability = bss_conf->assoc_capability;
6858 priv->next_scan_jiffies = jiffies +
6859 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6860 mutex_lock(&priv->mutex);
6861 iwl3945_post_associate(priv);
6862 mutex_unlock(&priv->mutex);
6865 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6867 } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6868 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6869 iwl3945_send_rxon_assoc(priv);
6874 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6877 unsigned long flags;
6878 struct iwl3945_priv *priv = hw->priv;
6879 DECLARE_SSID_BUF(ssid_buf);
6881 IWL_DEBUG_MAC80211("enter\n");
6883 mutex_lock(&priv->mutex);
6884 spin_lock_irqsave(&priv->lock, flags);
6886 if (!iwl3945_is_ready_rf(priv)) {
6888 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6892 /* we don't schedule scan within next_scan_jiffies period */
6893 if (priv->next_scan_jiffies &&
6894 time_after(priv->next_scan_jiffies, jiffies)) {
6898 /* if we just finished scan ask for delay for a broadcast scan */
6899 if ((len == 0) && priv->last_scan_jiffies &&
6900 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6906 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6907 print_ssid(ssid_buf, ssid, len), (int)len);
6909 priv->one_direct_scan = 1;
6910 priv->direct_ssid_len = (u8)
6911 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6912 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6914 priv->one_direct_scan = 0;
6916 rc = iwl3945_scan_initiate(priv);
6918 IWL_DEBUG_MAC80211("leave\n");
6921 spin_unlock_irqrestore(&priv->lock, flags);
6922 mutex_unlock(&priv->mutex);
6927 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6928 const u8 *local_addr, const u8 *addr,
6929 struct ieee80211_key_conf *key)
6931 struct iwl3945_priv *priv = hw->priv;
6935 IWL_DEBUG_MAC80211("enter\n");
6937 if (!iwl3945_param_hwcrypto) {
6938 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6942 if (is_zero_ether_addr(addr))
6943 /* only support pairwise keys */
6946 sta_id = iwl3945_hw_find_station(priv, addr);
6947 if (sta_id == IWL_INVALID_STATION) {
6948 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6953 mutex_lock(&priv->mutex);
6955 iwl3945_scan_cancel_timeout(priv, 100);
6959 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
6961 iwl3945_set_rxon_hwcrypto(priv, 1);
6962 iwl3945_commit_rxon(priv);
6963 key->hw_key_idx = sta_id;
6964 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6965 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6969 rc = iwl3945_clear_sta_key_info(priv, sta_id);
6971 iwl3945_set_rxon_hwcrypto(priv, 0);
6972 iwl3945_commit_rxon(priv);
6973 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6980 IWL_DEBUG_MAC80211("leave\n");
6981 mutex_unlock(&priv->mutex);
6986 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6987 const struct ieee80211_tx_queue_params *params)
6989 struct iwl3945_priv *priv = hw->priv;
6990 unsigned long flags;
6993 IWL_DEBUG_MAC80211("enter\n");
6995 if (!iwl3945_is_ready_rf(priv)) {
6996 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7000 if (queue >= AC_NUM) {
7001 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7005 q = AC_NUM - 1 - queue;
7007 spin_lock_irqsave(&priv->lock, flags);
7009 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7010 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7011 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7012 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7013 cpu_to_le16((params->txop * 32));
7015 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7016 priv->qos_data.qos_active = 1;
7018 spin_unlock_irqrestore(&priv->lock, flags);
7020 mutex_lock(&priv->mutex);
7021 if (priv->iw_mode == NL80211_IFTYPE_AP)
7022 iwl3945_activate_qos(priv, 1);
7023 else if (priv->assoc_id && iwl3945_is_associated(priv))
7024 iwl3945_activate_qos(priv, 0);
7026 mutex_unlock(&priv->mutex);
7028 IWL_DEBUG_MAC80211("leave\n");
7032 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7033 struct ieee80211_tx_queue_stats *stats)
7035 struct iwl3945_priv *priv = hw->priv;
7037 struct iwl3945_tx_queue *txq;
7038 struct iwl_queue *q;
7039 unsigned long flags;
7041 IWL_DEBUG_MAC80211("enter\n");
7043 if (!iwl3945_is_ready_rf(priv)) {
7044 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7048 spin_lock_irqsave(&priv->lock, flags);
7050 for (i = 0; i < AC_NUM; i++) {
7051 txq = &priv->txq[i];
7053 avail = iwl_queue_space(q);
7055 stats[i].len = q->n_window - avail;
7056 stats[i].limit = q->n_window - q->high_mark;
7057 stats[i].count = q->n_window;
7060 spin_unlock_irqrestore(&priv->lock, flags);
7062 IWL_DEBUG_MAC80211("leave\n");
7067 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7069 struct iwl3945_priv *priv = hw->priv;
7070 unsigned long flags;
7072 mutex_lock(&priv->mutex);
7073 IWL_DEBUG_MAC80211("enter\n");
7075 iwl3945_reset_qos(priv);
7077 spin_lock_irqsave(&priv->lock, flags);
7079 priv->assoc_capability = 0;
7080 priv->call_post_assoc_from_beacon = 0;
7082 /* new association get rid of ibss beacon skb */
7083 if (priv->ibss_beacon)
7084 dev_kfree_skb(priv->ibss_beacon);
7086 priv->ibss_beacon = NULL;
7088 priv->beacon_int = priv->hw->conf.beacon_int;
7089 priv->timestamp = 0;
7090 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
7091 priv->beacon_int = 0;
7093 spin_unlock_irqrestore(&priv->lock, flags);
7095 if (!iwl3945_is_ready_rf(priv)) {
7096 IWL_DEBUG_MAC80211("leave - not ready\n");
7097 mutex_unlock(&priv->mutex);
7101 /* we are restarting association process
7102 * clear RXON_FILTER_ASSOC_MSK bit
7104 if (priv->iw_mode != NL80211_IFTYPE_AP) {
7105 iwl3945_scan_cancel_timeout(priv, 100);
7106 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7107 iwl3945_commit_rxon(priv);
7110 /* Per mac80211.h: This is only used in IBSS mode... */
7111 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7113 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7114 mutex_unlock(&priv->mutex);
7118 iwl3945_set_rate(priv);
7120 mutex_unlock(&priv->mutex);
7122 IWL_DEBUG_MAC80211("leave\n");
7126 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7128 struct iwl3945_priv *priv = hw->priv;
7129 unsigned long flags;
7131 IWL_DEBUG_MAC80211("enter\n");
7133 if (!iwl3945_is_ready_rf(priv)) {
7134 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7138 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7139 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7143 spin_lock_irqsave(&priv->lock, flags);
7145 if (priv->ibss_beacon)
7146 dev_kfree_skb(priv->ibss_beacon);
7148 priv->ibss_beacon = skb;
7152 IWL_DEBUG_MAC80211("leave\n");
7153 spin_unlock_irqrestore(&priv->lock, flags);
7155 iwl3945_reset_qos(priv);
7157 iwl3945_post_associate(priv);
7163 /*****************************************************************************
7167 *****************************************************************************/
7169 #ifdef CONFIG_IWL3945_DEBUG
7172 * The following adds a new attribute to the sysfs representation
7173 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7174 * used for controlling the debug level.
7176 * See the level definitions in iwl for details.
7178 static ssize_t show_debug_level(struct device *d,
7179 struct device_attribute *attr, char *buf)
7181 struct iwl3945_priv *priv = d->driver_data;
7183 return sprintf(buf, "0x%08X\n", priv->debug_level);
7185 static ssize_t store_debug_level(struct device *d,
7186 struct device_attribute *attr,
7187 const char *buf, size_t count)
7189 struct iwl3945_priv *priv = d->driver_data;
7193 ret = strict_strtoul(buf, 0, &val);
7195 printk(KERN_INFO DRV_NAME
7196 ": %s is not in hex or decimal form.\n", buf);
7198 priv->debug_level = val;
7200 return strnlen(buf, count);
7203 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
7204 show_debug_level, store_debug_level);
7206 #endif /* CONFIG_IWL3945_DEBUG */
7208 static ssize_t show_temperature(struct device *d,
7209 struct device_attribute *attr, char *buf)
7211 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7213 if (!iwl3945_is_alive(priv))
7216 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7219 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7221 static ssize_t show_tx_power(struct device *d,
7222 struct device_attribute *attr, char *buf)
7224 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7225 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7228 static ssize_t store_tx_power(struct device *d,
7229 struct device_attribute *attr,
7230 const char *buf, size_t count)
7232 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7233 char *p = (char *)buf;
7236 val = simple_strtoul(p, &p, 10);
7238 printk(KERN_INFO DRV_NAME
7239 ": %s is not in decimal form.\n", buf);
7241 iwl3945_hw_reg_set_txpower(priv, val);
7246 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7248 static ssize_t show_flags(struct device *d,
7249 struct device_attribute *attr, char *buf)
7251 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7253 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7256 static ssize_t store_flags(struct device *d,
7257 struct device_attribute *attr,
7258 const char *buf, size_t count)
7260 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7261 u32 flags = simple_strtoul(buf, NULL, 0);
7263 mutex_lock(&priv->mutex);
7264 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7265 /* Cancel any currently running scans... */
7266 if (iwl3945_scan_cancel_timeout(priv, 100))
7267 IWL_WARNING("Could not cancel scan.\n");
7269 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7271 priv->staging_rxon.flags = cpu_to_le32(flags);
7272 iwl3945_commit_rxon(priv);
7275 mutex_unlock(&priv->mutex);
7280 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7282 static ssize_t show_filter_flags(struct device *d,
7283 struct device_attribute *attr, char *buf)
7285 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7287 return sprintf(buf, "0x%04X\n",
7288 le32_to_cpu(priv->active_rxon.filter_flags));
7291 static ssize_t store_filter_flags(struct device *d,
7292 struct device_attribute *attr,
7293 const char *buf, size_t count)
7295 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7296 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7298 mutex_lock(&priv->mutex);
7299 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7300 /* Cancel any currently running scans... */
7301 if (iwl3945_scan_cancel_timeout(priv, 100))
7302 IWL_WARNING("Could not cancel scan.\n");
7304 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7305 "0x%04X\n", filter_flags);
7306 priv->staging_rxon.filter_flags =
7307 cpu_to_le32(filter_flags);
7308 iwl3945_commit_rxon(priv);
7311 mutex_unlock(&priv->mutex);
7316 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7317 store_filter_flags);
7319 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7321 static ssize_t show_measurement(struct device *d,
7322 struct device_attribute *attr, char *buf)
7324 struct iwl3945_priv *priv = dev_get_drvdata(d);
7325 struct iwl_spectrum_notification measure_report;
7326 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7327 u8 *data = (u8 *)&measure_report;
7328 unsigned long flags;
7330 spin_lock_irqsave(&priv->lock, flags);
7331 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7332 spin_unlock_irqrestore(&priv->lock, flags);
7335 memcpy(&measure_report, &priv->measure_report, size);
7336 priv->measurement_status = 0;
7337 spin_unlock_irqrestore(&priv->lock, flags);
7339 while (size && (PAGE_SIZE - len)) {
7340 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7341 PAGE_SIZE - len, 1);
7343 if (PAGE_SIZE - len)
7347 size -= min(size, 16U);
7353 static ssize_t store_measurement(struct device *d,
7354 struct device_attribute *attr,
7355 const char *buf, size_t count)
7357 struct iwl3945_priv *priv = dev_get_drvdata(d);
7358 struct ieee80211_measurement_params params = {
7359 .channel = le16_to_cpu(priv->active_rxon.channel),
7360 .start_time = cpu_to_le64(priv->last_tsf),
7361 .duration = cpu_to_le16(1),
7363 u8 type = IWL_MEASURE_BASIC;
7369 strncpy(buffer, buf, min(sizeof(buffer), count));
7370 channel = simple_strtoul(p, NULL, 0);
7372 params.channel = channel;
7375 while (*p && *p != ' ')
7378 type = simple_strtoul(p + 1, NULL, 0);
7381 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7382 "channel %d (for '%s')\n", type, params.channel, buf);
7383 iwl3945_get_measurement(priv, ¶ms, type);
7388 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7389 show_measurement, store_measurement);
7390 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7392 static ssize_t store_retry_rate(struct device *d,
7393 struct device_attribute *attr,
7394 const char *buf, size_t count)
7396 struct iwl3945_priv *priv = dev_get_drvdata(d);
7398 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7399 if (priv->retry_rate <= 0)
7400 priv->retry_rate = 1;
7405 static ssize_t show_retry_rate(struct device *d,
7406 struct device_attribute *attr, char *buf)
7408 struct iwl3945_priv *priv = dev_get_drvdata(d);
7409 return sprintf(buf, "%d", priv->retry_rate);
7412 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7415 static ssize_t store_power_level(struct device *d,
7416 struct device_attribute *attr,
7417 const char *buf, size_t count)
7419 struct iwl3945_priv *priv = dev_get_drvdata(d);
7423 mode = simple_strtoul(buf, NULL, 0);
7424 mutex_lock(&priv->mutex);
7426 if (!iwl3945_is_ready(priv)) {
7431 if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
7432 (mode == IWL39_POWER_AC))
7433 mode = IWL39_POWER_AC;
7435 mode |= IWL_POWER_ENABLED;
7437 if (mode != priv->power_mode) {
7438 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7440 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7443 priv->power_mode = mode;
7449 mutex_unlock(&priv->mutex);
7453 #define MAX_WX_STRING 80
7455 /* Values are in microsecond */
7456 static const s32 timeout_duration[] = {
7463 static const s32 period_duration[] = {
7471 static ssize_t show_power_level(struct device *d,
7472 struct device_attribute *attr, char *buf)
7474 struct iwl3945_priv *priv = dev_get_drvdata(d);
7475 int level = IWL_POWER_LEVEL(priv->power_mode);
7478 p += sprintf(p, "%d ", level);
7480 case IWL_POWER_MODE_CAM:
7481 case IWL39_POWER_AC:
7482 p += sprintf(p, "(AC)");
7484 case IWL39_POWER_BATTERY:
7485 p += sprintf(p, "(BATTERY)");
7489 "(Timeout %dms, Period %dms)",
7490 timeout_duration[level - 1] / 1000,
7491 period_duration[level - 1] / 1000);
7494 if (!(priv->power_mode & IWL_POWER_ENABLED))
7495 p += sprintf(p, " OFF\n");
7497 p += sprintf(p, " \n");
7503 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7506 static ssize_t show_channels(struct device *d,
7507 struct device_attribute *attr, char *buf)
7509 /* all this shit doesn't belong into sysfs anyway */
7513 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7515 static ssize_t show_statistics(struct device *d,
7516 struct device_attribute *attr, char *buf)
7518 struct iwl3945_priv *priv = dev_get_drvdata(d);
7519 u32 size = sizeof(struct iwl3945_notif_statistics);
7520 u32 len = 0, ofs = 0;
7521 u8 *data = (u8 *)&priv->statistics;
7524 if (!iwl3945_is_alive(priv))
7527 mutex_lock(&priv->mutex);
7528 rc = iwl3945_send_statistics_request(priv);
7529 mutex_unlock(&priv->mutex);
7533 "Error sending statistics request: 0x%08X\n", rc);
7537 while (size && (PAGE_SIZE - len)) {
7538 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7539 PAGE_SIZE - len, 1);
7541 if (PAGE_SIZE - len)
7545 size -= min(size, 16U);
7551 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7553 static ssize_t show_antenna(struct device *d,
7554 struct device_attribute *attr, char *buf)
7556 struct iwl3945_priv *priv = dev_get_drvdata(d);
7558 if (!iwl3945_is_alive(priv))
7561 return sprintf(buf, "%d\n", priv->antenna);
7564 static ssize_t store_antenna(struct device *d,
7565 struct device_attribute *attr,
7566 const char *buf, size_t count)
7569 struct iwl3945_priv *priv = dev_get_drvdata(d);
7574 if (sscanf(buf, "%1i", &ant) != 1) {
7575 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7579 if ((ant >= 0) && (ant <= 2)) {
7580 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7581 priv->antenna = (enum iwl3945_antenna)ant;
7583 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7589 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7591 static ssize_t show_status(struct device *d,
7592 struct device_attribute *attr, char *buf)
7594 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7595 if (!iwl3945_is_alive(priv))
7597 return sprintf(buf, "0x%08x\n", (int)priv->status);
7600 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7602 static ssize_t dump_error_log(struct device *d,
7603 struct device_attribute *attr,
7604 const char *buf, size_t count)
7606 char *p = (char *)buf;
7609 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7611 return strnlen(buf, count);
7614 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7616 static ssize_t dump_event_log(struct device *d,
7617 struct device_attribute *attr,
7618 const char *buf, size_t count)
7620 char *p = (char *)buf;
7623 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7625 return strnlen(buf, count);
7628 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7630 /*****************************************************************************
7632 * driver setup and tear down
7634 *****************************************************************************/
7636 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7638 priv->workqueue = create_workqueue(DRV_NAME);
7640 init_waitqueue_head(&priv->wait_command_queue);
7642 INIT_WORK(&priv->up, iwl3945_bg_up);
7643 INIT_WORK(&priv->restart, iwl3945_bg_restart);
7644 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7645 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7646 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7647 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7648 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7649 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7650 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7651 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7652 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7654 iwl3945_hw_setup_deferred_work(priv);
7656 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7657 iwl3945_irq_tasklet, (unsigned long)priv);
7660 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7662 iwl3945_hw_cancel_deferred_work(priv);
7664 cancel_delayed_work_sync(&priv->init_alive_start);
7665 cancel_delayed_work(&priv->scan_check);
7666 cancel_delayed_work(&priv->alive_start);
7667 cancel_work_sync(&priv->beacon_update);
7670 static struct attribute *iwl3945_sysfs_entries[] = {
7671 &dev_attr_antenna.attr,
7672 &dev_attr_channels.attr,
7673 &dev_attr_dump_errors.attr,
7674 &dev_attr_dump_events.attr,
7675 &dev_attr_flags.attr,
7676 &dev_attr_filter_flags.attr,
7677 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7678 &dev_attr_measurement.attr,
7680 &dev_attr_power_level.attr,
7681 &dev_attr_retry_rate.attr,
7682 &dev_attr_statistics.attr,
7683 &dev_attr_status.attr,
7684 &dev_attr_temperature.attr,
7685 &dev_attr_tx_power.attr,
7686 #ifdef CONFIG_IWL3945_DEBUG
7687 &dev_attr_debug_level.attr,
7692 static struct attribute_group iwl3945_attribute_group = {
7693 .name = NULL, /* put in device directory */
7694 .attrs = iwl3945_sysfs_entries,
7697 static struct ieee80211_ops iwl3945_hw_ops = {
7698 .tx = iwl3945_mac_tx,
7699 .start = iwl3945_mac_start,
7700 .stop = iwl3945_mac_stop,
7701 .add_interface = iwl3945_mac_add_interface,
7702 .remove_interface = iwl3945_mac_remove_interface,
7703 .config = iwl3945_mac_config,
7704 .config_interface = iwl3945_mac_config_interface,
7705 .configure_filter = iwl3945_configure_filter,
7706 .set_key = iwl3945_mac_set_key,
7707 .get_tx_stats = iwl3945_mac_get_tx_stats,
7708 .conf_tx = iwl3945_mac_conf_tx,
7709 .reset_tsf = iwl3945_mac_reset_tsf,
7710 .bss_info_changed = iwl3945_bss_info_changed,
7711 .hw_scan = iwl3945_mac_hw_scan
7714 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7717 struct iwl3945_priv *priv;
7718 struct ieee80211_hw *hw;
7719 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7720 unsigned long flags;
7722 /***********************
7723 * 1. Allocating HW data
7724 * ********************/
7726 /* mac80211 allocates memory for this device instance, including
7727 * space for this driver's private structure */
7728 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7730 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7735 SET_IEEE80211_DEV(hw, &pdev->dev);
7739 priv->pci_dev = pdev;
7742 if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7743 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7744 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7745 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7750 /* Disabling hardware scan means that mac80211 will perform scans
7751 * "the hard way", rather than using device's scan. */
7752 if (iwl3945_param_disable_hw_scan) {
7753 IWL_DEBUG_INFO("Disabling hw_scan\n");
7754 iwl3945_hw_ops.hw_scan = NULL;
7757 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7758 hw->rate_control_algorithm = "iwl-3945-rs";
7759 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7761 /* Select antenna (may be helpful if only one antenna is connected) */
7762 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7763 #ifdef CONFIG_IWL3945_DEBUG
7764 priv->debug_level = iwl3945_param_debug;
7765 atomic_set(&priv->restrict_refcnt, 0);
7768 /* Tell mac80211 our characteristics */
7769 hw->flags = IEEE80211_HW_SIGNAL_DBM |
7770 IEEE80211_HW_NOISE_DBM;
7772 hw->wiphy->interface_modes =
7773 BIT(NL80211_IFTYPE_STATION) |
7774 BIT(NL80211_IFTYPE_ADHOC);
7776 hw->wiphy->fw_handles_regulatory = true;
7778 /* 4 EDCA QOS priorities */
7781 /***************************
7782 * 2. Initializing PCI bus
7783 * *************************/
7784 if (pci_enable_device(pdev)) {
7786 goto out_ieee80211_free_hw;
7789 pci_set_master(pdev);
7791 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7793 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7795 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
7796 goto out_pci_disable_device;
7799 pci_set_drvdata(pdev, priv);
7800 err = pci_request_regions(pdev, DRV_NAME);
7802 goto out_pci_disable_device;
7804 /***********************
7805 * 3. Read REV Register
7806 * ********************/
7807 priv->hw_base = pci_iomap(pdev, 0, 0);
7808 if (!priv->hw_base) {
7810 goto out_pci_release_regions;
7813 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7814 (unsigned long long) pci_resource_len(pdev, 0));
7815 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7817 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7818 * PCI Tx retries from interfering with C3 CPU state */
7819 pci_write_config_byte(pdev, 0x41, 0x00);
7822 iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7823 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7825 iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7826 err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
7827 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7829 IWL_DEBUG_INFO("Failed to init the card\n");
7830 goto out_remove_sysfs;
7833 /***********************
7835 * ********************/
7836 /* Read the EEPROM */
7837 err = iwl3945_eeprom_init(priv);
7839 IWL_ERROR("Unable to init EEPROM\n");
7840 goto out_remove_sysfs;
7842 /* MAC Address location in EEPROM same for 3945/4965 */
7843 get_eeprom_mac(priv, priv->mac_addr);
7844 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7845 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7847 /***********************
7848 * 5. Setup HW Constants
7849 * ********************/
7850 /* Device-specific setup */
7851 if (iwl3945_hw_set_hw_setting(priv)) {
7852 IWL_ERROR("failed to set hw settings\n");
7856 /***********************
7858 * ********************/
7859 priv->retry_rate = 1;
7860 priv->ibss_beacon = NULL;
7862 spin_lock_init(&priv->lock);
7863 spin_lock_init(&priv->power_data.lock);
7864 spin_lock_init(&priv->sta_lock);
7865 spin_lock_init(&priv->hcmd_lock);
7867 INIT_LIST_HEAD(&priv->free_frames);
7868 mutex_init(&priv->mutex);
7870 /* Clear the driver's (not device's) station table */
7871 iwl3945_clear_stations_table(priv);
7873 priv->data_retry_limit = -1;
7874 priv->ieee_channels = NULL;
7875 priv->ieee_rates = NULL;
7876 priv->band = IEEE80211_BAND_2GHZ;
7878 priv->iw_mode = NL80211_IFTYPE_STATION;
7880 iwl3945_reset_qos(priv);
7882 priv->qos_data.qos_active = 0;
7883 priv->qos_data.qos_cap.val = 0;
7886 priv->rates_mask = IWL_RATES_MASK;
7887 /* If power management is turned on, default to AC mode */
7888 priv->power_mode = IWL39_POWER_AC;
7889 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7891 err = iwl3945_init_channel_map(priv);
7893 IWL_ERROR("initializing regulatory failed: %d\n", err);
7894 goto out_release_irq;
7897 err = iwl3945_init_geos(priv);
7899 IWL_ERROR("initializing geos failed: %d\n", err);
7900 goto out_free_channel_map;
7903 printk(KERN_INFO DRV_NAME
7904 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7906 /***********************************
7907 * 7. Initialize Module Parameters
7908 * **********************************/
7910 /* Initialize module parameter values here */
7911 /* Disable radio (SW RF KILL) via parameter when loading driver */
7912 if (iwl3945_param_disable) {
7913 set_bit(STATUS_RF_KILL_SW, &priv->status);
7914 IWL_DEBUG_INFO("Radio disabled.\n");
7918 /***********************
7920 * ********************/
7922 spin_lock_irqsave(&priv->lock, flags);
7923 iwl3945_disable_interrupts(priv);
7924 spin_unlock_irqrestore(&priv->lock, flags);
7926 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7928 IWL_ERROR("failed to create sysfs device attributes\n");
7932 iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7933 iwl3945_setup_deferred_work(priv);
7934 iwl3945_setup_rx_handlers(priv);
7936 /***********************
7938 * ********************/
7939 pci_save_state(pdev);
7940 pci_disable_device(pdev);
7942 /*********************************
7943 * 10. Setup and Register mac80211
7944 * *******************************/
7946 err = ieee80211_register_hw(priv->hw);
7948 IWL_ERROR("Failed to register network device (error %d)\n", err);
7949 goto out_remove_sysfs;
7952 priv->hw->conf.beacon_int = 100;
7953 priv->mac80211_registered = 1;
7956 err = iwl3945_rfkill_init(priv);
7958 IWL_ERROR("Unable to initialize RFKILL system. "
7959 "Ignoring error: %d\n", err);
7964 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7966 iwl3945_free_geos(priv);
7967 out_free_channel_map:
7968 iwl3945_free_channel_map(priv);
7972 destroy_workqueue(priv->workqueue);
7973 priv->workqueue = NULL;
7974 iwl3945_unset_hw_setting(priv);
7977 pci_iounmap(pdev, priv->hw_base);
7978 out_pci_release_regions:
7979 pci_release_regions(pdev);
7980 out_pci_disable_device:
7981 pci_disable_device(pdev);
7982 pci_set_drvdata(pdev, NULL);
7983 out_ieee80211_free_hw:
7984 ieee80211_free_hw(priv->hw);
7989 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
7991 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
7992 unsigned long flags;
7997 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7999 set_bit(STATUS_EXIT_PENDING, &priv->status);
8003 /* make sure we flush any pending irq or
8004 * tasklet for the driver
8006 spin_lock_irqsave(&priv->lock, flags);
8007 iwl3945_disable_interrupts(priv);
8008 spin_unlock_irqrestore(&priv->lock, flags);
8010 iwl_synchronize_irq(priv);
8012 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8014 iwl3945_rfkill_unregister(priv);
8015 iwl3945_dealloc_ucode_pci(priv);
8018 iwl3945_rx_queue_free(priv, &priv->rxq);
8019 iwl3945_hw_txq_ctx_free(priv);
8021 iwl3945_unset_hw_setting(priv);
8022 iwl3945_clear_stations_table(priv);
8024 if (priv->mac80211_registered)
8025 ieee80211_unregister_hw(priv->hw);
8027 /*netif_stop_queue(dev); */
8028 flush_workqueue(priv->workqueue);
8030 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8031 * priv->workqueue... so we can't take down the workqueue
8033 destroy_workqueue(priv->workqueue);
8034 priv->workqueue = NULL;
8036 pci_iounmap(pdev, priv->hw_base);
8037 pci_release_regions(pdev);
8038 pci_disable_device(pdev);
8039 pci_set_drvdata(pdev, NULL);
8041 iwl3945_free_channel_map(priv);
8042 iwl3945_free_geos(priv);
8044 if (priv->ibss_beacon)
8045 dev_kfree_skb(priv->ibss_beacon);
8047 ieee80211_free_hw(priv->hw);
8052 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8054 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8056 if (priv->is_open) {
8057 set_bit(STATUS_IN_SUSPEND, &priv->status);
8058 iwl3945_mac_stop(priv->hw);
8062 pci_set_power_state(pdev, PCI_D3hot);
8067 static int iwl3945_pci_resume(struct pci_dev *pdev)
8069 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8071 pci_set_power_state(pdev, PCI_D0);
8074 iwl3945_mac_start(priv->hw);
8076 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8080 #endif /* CONFIG_PM */
8082 /*************** RFKILL FUNCTIONS **********/
8083 #ifdef CONFIG_IWL3945_RFKILL
8084 /* software rf-kill from user */
8085 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8087 struct iwl3945_priv *priv = data;
8093 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8096 IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8097 mutex_lock(&priv->mutex);
8100 case RFKILL_STATE_UNBLOCKED:
8101 if (iwl3945_is_rfkill_hw(priv)) {
8105 iwl3945_radio_kill_sw(priv, 0);
8107 case RFKILL_STATE_SOFT_BLOCKED:
8108 iwl3945_radio_kill_sw(priv, 1);
8111 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8115 mutex_unlock(&priv->mutex);
8120 int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8122 struct device *device = wiphy_dev(priv->hw->wiphy);
8125 BUG_ON(device == NULL);
8127 IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8128 priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8129 if (!priv->rfkill) {
8130 IWL_ERROR("Unable to allocate rfkill device.\n");
8135 priv->rfkill->name = priv->cfg->name;
8136 priv->rfkill->data = priv;
8137 priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8138 priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8139 priv->rfkill->user_claim_unsupported = 1;
8141 priv->rfkill->dev.class->suspend = NULL;
8142 priv->rfkill->dev.class->resume = NULL;
8144 ret = rfkill_register(priv->rfkill);
8146 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8150 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8154 if (priv->rfkill != NULL)
8155 rfkill_free(priv->rfkill);
8156 priv->rfkill = NULL;
8159 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8163 void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8166 rfkill_unregister(priv->rfkill);
8168 priv->rfkill = NULL;
8171 /* set rf-kill to the right state. */
8172 void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8178 if (iwl3945_is_rfkill_hw(priv)) {
8179 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8183 if (!iwl3945_is_rfkill_sw(priv))
8184 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8186 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8190 /*****************************************************************************
8192 * driver and module entry point
8194 *****************************************************************************/
8196 static struct pci_driver iwl3945_driver = {
8198 .id_table = iwl3945_hw_card_ids,
8199 .probe = iwl3945_pci_probe,
8200 .remove = __devexit_p(iwl3945_pci_remove),
8202 .suspend = iwl3945_pci_suspend,
8203 .resume = iwl3945_pci_resume,
8207 static int __init iwl3945_init(void)
8211 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8212 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8214 ret = iwl3945_rate_control_register();
8216 printk(KERN_ERR DRV_NAME
8217 "Unable to register rate control algorithm: %d\n", ret);
8221 ret = pci_register_driver(&iwl3945_driver);
8223 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
8224 goto error_register;
8230 iwl3945_rate_control_unregister();
8234 static void __exit iwl3945_exit(void)
8236 pci_unregister_driver(&iwl3945_driver);
8237 iwl3945_rate_control_unregister();
8240 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8242 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8243 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8244 module_param_named(disable, iwl3945_param_disable, int, 0444);
8245 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8246 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8247 MODULE_PARM_DESC(hwcrypto,
8248 "using hardware crypto engine (default 0 [software])\n");
8249 module_param_named(debug, iwl3945_param_debug, uint, 0444);
8250 MODULE_PARM_DESC(debug, "debug output mask");
8251 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8252 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8254 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8255 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8257 module_exit(iwl3945_exit);
8258 module_init(iwl3945_init);