1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/mac80211.h>
46 #include <asm/div64.h>
48 #include "iwl-eeprom.h"
52 #include "iwl-helpers.h"
54 #include "iwl-calib.h"
57 /******************************************************************************
61 ******************************************************************************/
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
70 #ifdef CONFIG_IWLWIFI_DEBUG
76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
91 struct iwl_priv *priv, enum ieee80211_band band)
93 return priv->hw->wiphy->bands[band];
96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
98 /* Single white space is for Linksys APs */
99 if (essid_len == 1 && essid[0] == ' ')
102 /* Otherwise, if the entire essid is 0, we assume it is hidden */
105 if (essid[essid_len] != '\0')
112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
114 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
115 const char *s = essid;
118 if (iwl4965_is_empty_essid(essid, essid_len)) {
119 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
123 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
124 while (essid_len--) {
136 /*************** STATION TABLE MANAGEMENT ****
137 * mac80211 should be examined to determine if sta_info is duplicating
138 * the functionality provided here
141 /**************************************************************/
145 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
147 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
150 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
152 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
157 * iwl4965_check_rxon_cmd - validate RXON structure is valid
159 * NOTE: This is really only useful during development and can eventually
160 * be #ifdef'd out once the driver is stable and folks aren't actively
163 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
168 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
169 error |= le32_to_cpu(rxon->flags &
170 (RXON_FLG_TGJ_NARROW_BAND_MSK |
171 RXON_FLG_RADAR_DETECT_MSK));
173 IWL_WARNING("check 24G fields %d | %d\n",
176 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
177 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
179 IWL_WARNING("check 52 fields %d | %d\n",
181 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
183 IWL_WARNING("check 52 CCK %d | %d\n",
186 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
188 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
190 /* make sure basic rates 6Mbps and 1Mbps are supported */
191 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
192 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
194 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
196 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
198 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
200 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
201 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
203 IWL_WARNING("check CCK and short slot %d | %d\n",
206 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
207 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
209 IWL_WARNING("check CCK & auto detect %d | %d\n",
212 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
213 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
215 IWL_WARNING("check TGG and auto detect %d | %d\n",
219 IWL_WARNING("Tuning to channel %d\n",
220 le16_to_cpu(rxon->channel));
223 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
230 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
231 * @priv: staging_rxon is compared to active_rxon
233 * If the RXON structure is changing enough to require a new tune,
234 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
235 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
237 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
240 /* These items are only settable from the full RXON command */
241 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
242 compare_ether_addr(priv->staging_rxon.bssid_addr,
243 priv->active_rxon.bssid_addr) ||
244 compare_ether_addr(priv->staging_rxon.node_addr,
245 priv->active_rxon.node_addr) ||
246 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
247 priv->active_rxon.wlap_bssid_addr) ||
248 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
249 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
250 (priv->staging_rxon.air_propagation !=
251 priv->active_rxon.air_propagation) ||
252 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
253 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
254 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
255 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
256 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
257 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
260 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
261 * be updated with the RXON_ASSOC command -- however only some
262 * flag transitions are allowed using RXON_ASSOC */
264 /* Check if we are not switching bands */
265 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
266 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
269 /* Check if we are switching association toggle */
270 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
271 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
278 * iwl4965_commit_rxon - commit staging_rxon to hardware
280 * The RXON command in staging_rxon is committed to the hardware and
281 * the active_rxon structure is updated with the new data. This
282 * function correctly transitions out of the RXON_ASSOC_MSK state if
283 * a HW tune is required based on the RXON structure changes.
285 static int iwl4965_commit_rxon(struct iwl_priv *priv)
287 /* cast away the const for active_rxon in this function */
288 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
289 DECLARE_MAC_BUF(mac);
292 if (!iwl_is_alive(priv))
295 /* always get timestamp with Rx frame */
296 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
298 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
300 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
304 /* If we don't need to send a full RXON, we can use
305 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
306 * and other flags for the current radio configuration. */
307 if (!iwl4965_full_rxon_required(priv)) {
308 rc = iwl_send_rxon_assoc(priv);
310 IWL_ERROR("Error setting RXON_ASSOC "
311 "configuration (%d).\n", rc);
315 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
320 /* station table will be cleared */
321 priv->assoc_station_added = 0;
323 /* If we are currently associated and the new config requires
324 * an RXON_ASSOC and the new config wants the associated mask enabled,
325 * we must clear the associated from the active configuration
326 * before we apply the new config */
327 if (iwl_is_associated(priv) &&
328 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
329 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
330 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
332 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
333 sizeof(struct iwl_rxon_cmd),
336 /* If the mask clearing failed then we set
337 * active_rxon back to what it was previously */
339 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
340 IWL_ERROR("Error clearing ASSOC_MSK on current "
341 "configuration (%d).\n", rc);
346 IWL_DEBUG_INFO("Sending RXON\n"
347 "* with%s RXON_FILTER_ASSOC_MSK\n"
350 ((priv->staging_rxon.filter_flags &
351 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
352 le16_to_cpu(priv->staging_rxon.channel),
353 print_mac(mac, priv->staging_rxon.bssid_addr));
355 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
356 /* Apply the new configuration */
357 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
358 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
360 IWL_ERROR("Error setting new configuration (%d).\n", rc);
364 iwl_remove_station(priv, iwl_bcast_addr, 0);
365 iwlcore_clear_stations_table(priv);
367 if (!priv->error_recovering)
368 priv->start_calib = 0;
370 iwl_init_sensitivity(priv);
372 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
374 /* If we issue a new RXON command which required a tune then we must
375 * send a new TXPOWER command or we won't be able to Tx any frames */
376 rc = iwl4965_hw_reg_send_txpower(priv);
378 IWL_ERROR("Error setting Tx power (%d).\n", rc);
382 /* Add the broadcast address so we can send broadcast frames */
383 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
384 IWL_INVALID_STATION) {
385 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
389 /* If we have set the ASSOC_MSK and we are in BSS mode then
390 * add the IWL_AP_ID to the station rate table */
391 if (iwl_is_associated(priv) &&
392 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
393 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
394 == IWL_INVALID_STATION) {
395 IWL_ERROR("Error adding AP address for transmit.\n");
398 priv->assoc_station_added = 1;
399 if (priv->default_wep_key &&
400 iwl_send_static_wepkey_cmd(priv, 0))
401 IWL_ERROR("Could not send WEP static key.\n");
407 void iwl4965_update_chain_flags(struct iwl_priv *priv)
410 iwl_set_rxon_chain(priv);
411 iwl4965_commit_rxon(priv);
414 static int iwl4965_send_bt_config(struct iwl_priv *priv)
416 struct iwl4965_bt_cmd bt_cmd = {
424 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
425 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
428 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
431 struct iwl_rx_packet *res;
432 struct iwl_host_cmd cmd = {
433 .id = REPLY_SCAN_ABORT_CMD,
434 .meta.flags = CMD_WANT_SKB,
437 /* If there isn't a scan actively going on in the hardware
438 * then we are in between scan bands and not actually
439 * actively scanning, so don't send the abort command */
440 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
441 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
445 ret = iwl_send_cmd_sync(priv, &cmd);
447 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
451 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
452 if (res->u.status != CAN_ABORT_STATUS) {
453 /* The scan abort will return 1 for success or
454 * 2 for "failure". A failure condition can be
455 * due to simply not being in an active scan which
456 * can occur if we send the scan abort before we
457 * the microcode has notified us that a scan is
459 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
460 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
461 clear_bit(STATUS_SCAN_HW, &priv->status);
464 dev_kfree_skb_any(cmd.meta.u.skb);
472 * Use: Sets the device's internal card state to enable, disable, or halt
474 * When in the 'enable' state the card operates as normal.
475 * When in the 'disable' state, the card enters into a low power mode.
476 * When in the 'halt' state, the card is shut down and must be fully
477 * restarted to come back on.
479 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
481 struct iwl_host_cmd cmd = {
482 .id = REPLY_CARD_STATE_CMD,
485 .meta.flags = meta_flag,
488 return iwl_send_cmd(priv, &cmd);
491 static void iwl_clear_free_frames(struct iwl_priv *priv)
493 struct list_head *element;
495 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
498 while (!list_empty(&priv->free_frames)) {
499 element = priv->free_frames.next;
501 kfree(list_entry(element, struct iwl_frame, list));
502 priv->frames_count--;
505 if (priv->frames_count) {
506 IWL_WARNING("%d frames still in use. Did we lose one?\n",
508 priv->frames_count = 0;
512 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
514 struct iwl_frame *frame;
515 struct list_head *element;
516 if (list_empty(&priv->free_frames)) {
517 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
519 IWL_ERROR("Could not allocate frame!\n");
523 priv->frames_count++;
527 element = priv->free_frames.next;
529 return list_entry(element, struct iwl_frame, list);
532 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
534 memset(frame, 0, sizeof(*frame));
535 list_add(&frame->list, &priv->free_frames);
538 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
539 struct ieee80211_hdr *hdr,
540 const u8 *dest, int left)
543 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
544 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
545 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
548 if (priv->ibss_beacon->len > left)
551 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
553 return priv->ibss_beacon->len;
556 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
562 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
563 rate_mask = priv->active_rate_basic & 0xF;
565 rate_mask = priv->active_rate_basic & 0xFF0;
567 /* Find lowest valid rate */
568 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
569 i = iwl_rates[i].next_ieee) {
570 if (rate_mask & (1 << i))
571 return iwl_rates[i].plcp;
574 /* No valid rate was found. Assign the lowest one */
575 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
576 return IWL_RATE_1M_PLCP;
578 return IWL_RATE_6M_PLCP;
581 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
583 struct iwl_frame *frame;
584 unsigned int frame_size;
588 frame = iwl_get_free_frame(priv);
591 IWL_ERROR("Could not obtain free frame buffer for beacon "
596 rate = iwl4965_rate_get_lowest_plcp(priv);
598 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
600 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
603 iwl_free_frame(priv, frame);
608 /******************************************************************************
610 * Misc. internal state and helper functions
612 ******************************************************************************/
615 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
617 * return : set the bit for each supported rate insert in ie
619 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
620 u16 basic_rate, int *left)
622 u16 ret_rates = 0, bit;
627 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
628 if (bit & supported_rate) {
630 rates[*cnt] = iwl_rates[i].ieee |
631 ((bit & basic_rate) ? 0x80 : 0x00);
635 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
643 #ifdef CONFIG_IWL4965_HT
644 static void iwl4965_ht_conf(struct iwl_priv *priv,
645 struct ieee80211_bss_conf *bss_conf)
647 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
648 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
649 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
651 IWL_DEBUG_MAC80211("enter: \n");
653 iwl_conf->is_ht = bss_conf->assoc_ht;
655 if (!iwl_conf->is_ht)
658 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
660 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
661 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
662 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
663 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
665 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
666 iwl_conf->max_amsdu_size =
667 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
669 iwl_conf->supported_chan_width =
670 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
671 iwl_conf->extension_chan_offset =
672 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
673 /* If no above or below channel supplied disable FAT channel */
674 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
675 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
676 iwl_conf->supported_chan_width = 0;
678 iwl_conf->tx_mimo_ps_mode =
679 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
680 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
682 iwl_conf->control_channel = ht_bss_conf->primary_channel;
683 iwl_conf->tx_chan_width =
684 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
685 iwl_conf->ht_protection =
686 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
687 iwl_conf->non_GF_STA_present =
688 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
690 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
691 IWL_DEBUG_MAC80211("leave\n");
694 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
697 struct ieee80211_ht_cap *ht_cap;
699 if (!sband || !sband->ht_info.ht_supported)
702 if (*left < sizeof(struct ieee80211_ht_cap))
705 *pos++ = sizeof(struct ieee80211_ht_cap);
706 ht_cap = (struct ieee80211_ht_cap *) pos;
708 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
709 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
710 ht_cap->ampdu_params_info =
711 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
712 ((sband->ht_info.ampdu_density << 2) &
713 IEEE80211_HT_CAP_AMPDU_DENSITY);
714 *left -= sizeof(struct ieee80211_ht_cap);
717 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
718 struct ieee80211_bss_conf *bss_conf)
721 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
729 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
731 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
732 enum ieee80211_band band,
733 struct ieee80211_mgmt *frame,
734 int left, int is_direct)
738 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
739 const struct ieee80211_supported_band *sband =
740 iwl_get_hw_mode(priv, band);
742 /* Make sure there is enough space for the probe request,
743 * two mandatory IEs and the data */
749 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
750 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
751 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
752 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
755 /* fill in our indirect SSID IE */
762 pos = &(frame->u.probe_req.variable[0]);
763 *pos++ = WLAN_EID_SSID;
766 /* fill in our direct SSID IE... */
769 left -= 2 + priv->essid_len;
772 /* ... fill it in... */
773 *pos++ = WLAN_EID_SSID;
774 *pos++ = priv->essid_len;
775 memcpy(pos, priv->essid, priv->essid_len);
776 pos += priv->essid_len;
777 len += 2 + priv->essid_len;
780 /* fill in supported rate */
786 /* ... fill it in... */
787 *pos++ = WLAN_EID_SUPP_RATES;
790 /* exclude 60M rate */
791 active_rates = priv->rates_mask;
792 active_rates &= ~IWL_RATE_60M_MASK;
794 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
796 cck_rates = IWL_CCK_RATES_MASK & active_rates;
797 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
798 active_rate_basic, &left);
799 active_rates &= ~ret_rates;
801 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
802 active_rate_basic, &left);
803 active_rates &= ~ret_rates;
807 if (active_rates == 0)
810 /* fill in supported extended rate */
815 /* ... fill it in... */
816 *pos++ = WLAN_EID_EXT_SUPP_RATES;
818 iwl4965_supported_rate_to_ie(pos, active_rates,
819 active_rate_basic, &left);
829 *pos++ = WLAN_EID_HT_CAPABILITY;
832 iwl_ht_cap_to_ie(sband, pos, &left);
842 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
843 struct iwl4965_qosparam_cmd *qos)
846 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
847 sizeof(struct iwl4965_qosparam_cmd), qos);
850 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
854 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
857 if (!priv->qos_data.qos_enable)
860 spin_lock_irqsave(&priv->lock, flags);
861 priv->qos_data.def_qos_parm.qos_flags = 0;
863 if (priv->qos_data.qos_cap.q_AP.queue_request &&
864 !priv->qos_data.qos_cap.q_AP.txop_request)
865 priv->qos_data.def_qos_parm.qos_flags |=
866 QOS_PARAM_FLG_TXOP_TYPE_MSK;
867 if (priv->qos_data.qos_active)
868 priv->qos_data.def_qos_parm.qos_flags |=
869 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
871 #ifdef CONFIG_IWL4965_HT
872 if (priv->current_ht_config.is_ht)
873 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
874 #endif /* CONFIG_IWL4965_HT */
876 spin_unlock_irqrestore(&priv->lock, flags);
878 if (force || iwl_is_associated(priv)) {
879 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
880 priv->qos_data.qos_active,
881 priv->qos_data.def_qos_parm.qos_flags);
883 iwl4965_send_qos_params_command(priv,
884 &(priv->qos_data.def_qos_parm));
888 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
890 /* Filter incoming packets to determine if they are targeted toward
891 * this network, discarding packets coming from ourselves */
892 switch (priv->iw_mode) {
893 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
894 /* packets from our adapter are dropped (echo) */
895 if (!compare_ether_addr(header->addr2, priv->mac_addr))
897 /* {broad,multi}cast packets to our IBSS go through */
898 if (is_multicast_ether_addr(header->addr1))
899 return !compare_ether_addr(header->addr3, priv->bssid);
900 /* packets to our adapter go through */
901 return !compare_ether_addr(header->addr1, priv->mac_addr);
902 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
903 /* packets from our adapter are dropped (echo) */
904 if (!compare_ether_addr(header->addr3, priv->mac_addr))
906 /* {broad,multi}cast packets to our BSS go through */
907 if (is_multicast_ether_addr(header->addr1))
908 return !compare_ether_addr(header->addr2, priv->bssid);
909 /* packets to our adapter go through */
910 return !compare_ether_addr(header->addr1, priv->mac_addr);
918 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
920 static const char *iwl4965_get_tx_fail_reason(u32 status)
922 switch (status & TX_STATUS_MSK) {
923 case TX_STATUS_SUCCESS:
925 TX_STATUS_ENTRY(SHORT_LIMIT);
926 TX_STATUS_ENTRY(LONG_LIMIT);
927 TX_STATUS_ENTRY(FIFO_UNDERRUN);
928 TX_STATUS_ENTRY(MGMNT_ABORT);
929 TX_STATUS_ENTRY(NEXT_FRAG);
930 TX_STATUS_ENTRY(LIFE_EXPIRE);
931 TX_STATUS_ENTRY(DEST_PS);
932 TX_STATUS_ENTRY(ABORTED);
933 TX_STATUS_ENTRY(BT_RETRY);
934 TX_STATUS_ENTRY(STA_INVALID);
935 TX_STATUS_ENTRY(FRAG_DROPPED);
936 TX_STATUS_ENTRY(TID_DISABLE);
937 TX_STATUS_ENTRY(FRAME_FLUSHED);
938 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
939 TX_STATUS_ENTRY(TX_LOCKED);
940 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
947 * iwl4965_scan_cancel - Cancel any currently executing HW scan
949 * NOTE: priv->mutex is not required before calling this function
951 static int iwl4965_scan_cancel(struct iwl_priv *priv)
953 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
954 clear_bit(STATUS_SCANNING, &priv->status);
958 if (test_bit(STATUS_SCANNING, &priv->status)) {
959 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
960 IWL_DEBUG_SCAN("Queuing scan abort.\n");
961 set_bit(STATUS_SCAN_ABORTING, &priv->status);
962 queue_work(priv->workqueue, &priv->abort_scan);
965 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
967 return test_bit(STATUS_SCANNING, &priv->status);
974 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
975 * @ms: amount of time to wait (in milliseconds) for scan to abort
977 * NOTE: priv->mutex must be held before calling this function
979 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
981 unsigned long now = jiffies;
984 ret = iwl4965_scan_cancel(priv);
986 mutex_unlock(&priv->mutex);
987 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
988 test_bit(STATUS_SCANNING, &priv->status))
990 mutex_lock(&priv->mutex);
992 return test_bit(STATUS_SCANNING, &priv->status);
998 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1000 /* Reset ieee stats */
1002 /* We don't reset the net_device_stats (ieee->stats) on
1005 priv->last_seq_num = -1;
1006 priv->last_frag_num = -1;
1007 priv->last_packet_time = 0;
1009 iwl4965_scan_cancel(priv);
1012 #define MAX_UCODE_BEACON_INTERVAL 4096
1013 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1015 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1018 u16 beacon_factor = 0;
1021 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1022 / MAX_UCODE_BEACON_INTERVAL;
1023 new_val = beacon_val / beacon_factor;
1025 return cpu_to_le16(new_val);
1028 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1030 u64 interval_tm_unit;
1032 unsigned long flags;
1033 struct ieee80211_conf *conf = NULL;
1036 conf = ieee80211_get_hw_conf(priv->hw);
1038 spin_lock_irqsave(&priv->lock, flags);
1039 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1040 priv->rxon_timing.timestamp.dw[0] =
1041 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1043 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1045 tsf = priv->timestamp;
1047 beacon_int = priv->beacon_int;
1048 spin_unlock_irqrestore(&priv->lock, flags);
1050 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1051 if (beacon_int == 0) {
1052 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1053 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1055 priv->rxon_timing.beacon_interval =
1056 cpu_to_le16(beacon_int);
1057 priv->rxon_timing.beacon_interval =
1058 iwl4965_adjust_beacon_interval(
1059 le16_to_cpu(priv->rxon_timing.beacon_interval));
1062 priv->rxon_timing.atim_window = 0;
1064 priv->rxon_timing.beacon_interval =
1065 iwl4965_adjust_beacon_interval(conf->beacon_int);
1066 /* TODO: we need to get atim_window from upper stack
1067 * for now we set to 0 */
1068 priv->rxon_timing.atim_window = 0;
1072 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1073 result = do_div(tsf, interval_tm_unit);
1074 priv->rxon_timing.beacon_init_val =
1075 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1078 ("beacon interval %d beacon timer %d beacon tim %d\n",
1079 le16_to_cpu(priv->rxon_timing.beacon_interval),
1080 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1081 le16_to_cpu(priv->rxon_timing.atim_window));
1084 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1086 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1087 IWL_ERROR("APs don't scan.\n");
1091 if (!iwl_is_ready_rf(priv)) {
1092 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1096 if (test_bit(STATUS_SCANNING, &priv->status)) {
1097 IWL_DEBUG_SCAN("Scan already in progress.\n");
1101 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1102 IWL_DEBUG_SCAN("Scan request while abort pending. "
1107 IWL_DEBUG_INFO("Starting scan...\n");
1108 priv->scan_bands = 2;
1109 set_bit(STATUS_SCANNING, &priv->status);
1110 priv->scan_start = jiffies;
1111 priv->scan_pass_start = priv->scan_start;
1113 queue_work(priv->workqueue, &priv->request_scan);
1119 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1120 enum ieee80211_band band)
1122 if (band == IEEE80211_BAND_5GHZ) {
1123 priv->staging_rxon.flags &=
1124 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125 | RXON_FLG_CCK_MSK);
1126 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1128 /* Copied from iwl4965_post_associate() */
1129 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1132 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1134 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1135 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1137 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1144 * initialize rxon structure with default values from eeprom
1146 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1148 const struct iwl_channel_info *ch_info;
1150 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1152 switch (priv->iw_mode) {
1153 case IEEE80211_IF_TYPE_AP:
1154 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1157 case IEEE80211_IF_TYPE_STA:
1158 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1162 case IEEE80211_IF_TYPE_IBSS:
1163 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166 RXON_FILTER_ACCEPT_GRP_MSK;
1169 case IEEE80211_IF_TYPE_MNTR:
1170 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1171 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1172 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1175 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1180 /* TODO: Figure out when short_preamble would be set and cache from
1182 if (!hw_to_local(priv->hw)->short_preamble)
1183 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1185 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1188 ch_info = iwl_get_channel_info(priv, priv->band,
1189 le16_to_cpu(priv->staging_rxon.channel));
1192 ch_info = &priv->channel_info[0];
1195 * in some case A channels are all non IBSS
1196 * in this case force B/G channel
1198 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1199 !(is_channel_ibss(ch_info)))
1200 ch_info = &priv->channel_info[0];
1202 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1203 priv->band = ch_info->band;
1205 iwl4965_set_flags_for_phymode(priv, priv->band);
1207 priv->staging_rxon.ofdm_basic_rates =
1208 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1209 priv->staging_rxon.cck_basic_rates =
1210 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1212 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1213 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1214 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1215 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1216 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1217 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1218 iwl_set_rxon_chain(priv);
1221 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1223 if (mode == IEEE80211_IF_TYPE_IBSS) {
1224 const struct iwl_channel_info *ch_info;
1226 ch_info = iwl_get_channel_info(priv,
1228 le16_to_cpu(priv->staging_rxon.channel));
1230 if (!ch_info || !is_channel_ibss(ch_info)) {
1231 IWL_ERROR("channel %d not IBSS channel\n",
1232 le16_to_cpu(priv->staging_rxon.channel));
1237 priv->iw_mode = mode;
1239 iwl4965_connection_init_rx_config(priv);
1240 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1242 iwlcore_clear_stations_table(priv);
1244 /* dont commit rxon if rf-kill is on*/
1245 if (!iwl_is_ready_rf(priv))
1248 cancel_delayed_work(&priv->scan_check);
1249 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1250 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1251 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1255 iwl4965_commit_rxon(priv);
1260 static void iwl4965_set_rate(struct iwl_priv *priv)
1262 const struct ieee80211_supported_band *hw = NULL;
1263 struct ieee80211_rate *rate;
1266 hw = iwl_get_hw_mode(priv, priv->band);
1268 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1272 priv->active_rate = 0;
1273 priv->active_rate_basic = 0;
1275 for (i = 0; i < hw->n_bitrates; i++) {
1276 rate = &(hw->bitrates[i]);
1277 if (rate->hw_value < IWL_RATE_COUNT)
1278 priv->active_rate |= (1 << rate->hw_value);
1281 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1282 priv->active_rate, priv->active_rate_basic);
1285 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1286 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1289 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1290 priv->staging_rxon.cck_basic_rates =
1291 ((priv->active_rate_basic &
1292 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1294 priv->staging_rxon.cck_basic_rates =
1295 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1297 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1298 priv->staging_rxon.ofdm_basic_rates =
1299 ((priv->active_rate_basic &
1300 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1301 IWL_FIRST_OFDM_RATE) & 0xFF;
1303 priv->staging_rxon.ofdm_basic_rates =
1304 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1307 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1309 unsigned long flags;
1311 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1314 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1315 disable_radio ? "OFF" : "ON");
1317 if (disable_radio) {
1318 iwl4965_scan_cancel(priv);
1319 /* FIXME: This is a workaround for AP */
1320 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1321 spin_lock_irqsave(&priv->lock, flags);
1322 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1323 CSR_UCODE_SW_BIT_RFKILL);
1324 spin_unlock_irqrestore(&priv->lock, flags);
1325 /* call the host command only if no hw rf-kill set */
1326 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1328 iwl4965_send_card_state(priv,
1329 CARD_STATE_CMD_DISABLE,
1331 set_bit(STATUS_RF_KILL_SW, &priv->status);
1333 /* make sure mac80211 stop sending Tx frame */
1334 if (priv->mac80211_registered)
1335 ieee80211_stop_queues(priv->hw);
1340 spin_lock_irqsave(&priv->lock, flags);
1341 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1343 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1344 spin_unlock_irqrestore(&priv->lock, flags);
1349 spin_lock_irqsave(&priv->lock, flags);
1350 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1351 if (!iwl_grab_nic_access(priv))
1352 iwl_release_nic_access(priv);
1353 spin_unlock_irqrestore(&priv->lock, flags);
1355 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1356 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1357 "disabled by HW switch\n");
1361 queue_work(priv->workqueue, &priv->restart);
1365 #define IWL_PACKET_RETRY_TIME HZ
1367 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1369 u16 sc = le16_to_cpu(header->seq_ctrl);
1370 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1371 u16 frag = sc & IEEE80211_SCTL_FRAG;
1372 u16 *last_seq, *last_frag;
1373 unsigned long *last_time;
1375 switch (priv->iw_mode) {
1376 case IEEE80211_IF_TYPE_IBSS:{
1377 struct list_head *p;
1378 struct iwl4965_ibss_seq *entry = NULL;
1379 u8 *mac = header->addr2;
1380 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1382 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1383 entry = list_entry(p, struct iwl4965_ibss_seq, list);
1384 if (!compare_ether_addr(entry->mac, mac))
1387 if (p == &priv->ibss_mac_hash[index]) {
1388 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1390 IWL_ERROR("Cannot malloc new mac entry\n");
1393 memcpy(entry->mac, mac, ETH_ALEN);
1394 entry->seq_num = seq;
1395 entry->frag_num = frag;
1396 entry->packet_time = jiffies;
1397 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1400 last_seq = &entry->seq_num;
1401 last_frag = &entry->frag_num;
1402 last_time = &entry->packet_time;
1405 case IEEE80211_IF_TYPE_STA:
1406 last_seq = &priv->last_seq_num;
1407 last_frag = &priv->last_frag_num;
1408 last_time = &priv->last_packet_time;
1413 if ((*last_seq == seq) &&
1414 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1415 if (*last_frag == frag)
1417 if (*last_frag + 1 != frag)
1418 /* out-of-order fragment */
1424 *last_time = jiffies;
1431 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1433 #include "iwl-spectrum.h"
1435 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1436 #define BEACON_TIME_MASK_HIGH 0xFF000000
1437 #define TIME_UNIT 1024
1440 * extended beacon time format
1441 * time in usec will be changed into a 32-bit value in 8:24 format
1442 * the high 1 byte is the beacon counts
1443 * the lower 3 bytes is the time in usec within one beacon interval
1446 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1450 u32 interval = beacon_interval * 1024;
1452 if (!interval || !usec)
1455 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1456 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1458 return (quot << 24) + rem;
1461 /* base is usually what we get from ucode with each received frame,
1462 * the same as HW timer counter counting down
1465 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1467 u32 base_low = base & BEACON_TIME_MASK_LOW;
1468 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1469 u32 interval = beacon_interval * TIME_UNIT;
1470 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1471 (addon & BEACON_TIME_MASK_HIGH);
1473 if (base_low > addon_low)
1474 res += base_low - addon_low;
1475 else if (base_low < addon_low) {
1476 res += interval + base_low - addon_low;
1481 return cpu_to_le32(res);
1484 static int iwl4965_get_measurement(struct iwl_priv *priv,
1485 struct ieee80211_measurement_params *params,
1488 struct iwl4965_spectrum_cmd spectrum;
1489 struct iwl_rx_packet *res;
1490 struct iwl_host_cmd cmd = {
1491 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1492 .data = (void *)&spectrum,
1493 .meta.flags = CMD_WANT_SKB,
1495 u32 add_time = le64_to_cpu(params->start_time);
1497 int spectrum_resp_status;
1498 int duration = le16_to_cpu(params->duration);
1500 if (iwl_is_associated(priv))
1502 iwl4965_usecs_to_beacons(
1503 le64_to_cpu(params->start_time) - priv->last_tsf,
1504 le16_to_cpu(priv->rxon_timing.beacon_interval));
1506 memset(&spectrum, 0, sizeof(spectrum));
1508 spectrum.channel_count = cpu_to_le16(1);
1510 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1511 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1512 cmd.len = sizeof(spectrum);
1513 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1515 if (iwl_is_associated(priv))
1516 spectrum.start_time =
1517 iwl4965_add_beacon_time(priv->last_beacon_time,
1519 le16_to_cpu(priv->rxon_timing.beacon_interval));
1521 spectrum.start_time = 0;
1523 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1524 spectrum.channels[0].channel = params->channel;
1525 spectrum.channels[0].type = type;
1526 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1527 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1528 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1530 rc = iwl_send_cmd_sync(priv, &cmd);
1534 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1535 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1536 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1540 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1541 switch (spectrum_resp_status) {
1542 case 0: /* Command will be handled */
1543 if (res->u.spectrum.id != 0xff) {
1545 ("Replaced existing measurement: %d\n",
1546 res->u.spectrum.id);
1547 priv->measurement_status &= ~MEASUREMENT_READY;
1549 priv->measurement_status |= MEASUREMENT_ACTIVE;
1553 case 1: /* Command will not be handled */
1558 dev_kfree_skb_any(cmd.meta.u.skb);
1564 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1565 struct iwl_tx_info *tx_sta)
1567 ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
1568 tx_sta->skb[0] = NULL;
1572 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1574 * When FW advances 'R' index, all entries between old and new 'R' index
1575 * need to be reclaimed. As result, some free space forms. If there is
1576 * enough free space (> low mark), wake the stack that feeds us.
1578 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1580 struct iwl_tx_queue *txq = &priv->txq[txq_id];
1581 struct iwl_queue *q = &txq->q;
1584 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1585 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1586 "is out of range [0-%d] %d %d.\n", txq_id,
1587 index, q->n_bd, q->write_ptr, q->read_ptr);
1591 for (index = iwl_queue_inc_wrap(index, q->n_bd);
1592 q->read_ptr != index;
1593 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1594 if (txq_id != IWL_CMD_QUEUE_NUM) {
1595 iwl4965_txstatus_to_ieee(priv,
1596 &(txq->txb[txq->q.read_ptr]));
1597 iwl_hw_txq_free_tfd(priv, txq);
1598 } else if (nfreed > 1) {
1599 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1600 q->write_ptr, q->read_ptr);
1601 queue_work(priv->workqueue, &priv->restart);
1609 static int iwl4965_is_tx_success(u32 status)
1611 status &= TX_STATUS_MSK;
1612 return (status == TX_STATUS_SUCCESS)
1613 || (status == TX_STATUS_DIRECT_DONE);
1616 /******************************************************************************
1618 * Generic RX handler implementations
1620 ******************************************************************************/
1621 #ifdef CONFIG_IWL4965_HT
1623 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1624 struct ieee80211_hdr *hdr)
1626 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1629 u8 *da = ieee80211_get_DA(hdr);
1630 return iwl_find_station(priv, da);
1634 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1635 struct iwl_priv *priv, int txq_id, int idx)
1637 if (priv->txq[txq_id].txb[idx].skb[0])
1638 return (struct ieee80211_hdr *)priv->txq[txq_id].
1639 txb[idx].skb[0]->data;
1643 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1645 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1646 tx_resp->frame_count);
1647 return le32_to_cpu(*scd_ssn) & MAX_SN;
1652 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1654 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1655 struct iwl_ht_agg *agg,
1656 struct iwl4965_tx_resp_agg *tx_resp,
1660 struct agg_tx_status *frame_status = &tx_resp->status;
1661 struct ieee80211_tx_info *info = NULL;
1662 struct ieee80211_hdr *hdr = NULL;
1667 if (agg->wait_for_ba)
1668 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1670 agg->frame_count = tx_resp->frame_count;
1671 agg->start_idx = start_idx;
1672 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1675 /* # frames attempted by Tx command */
1676 if (agg->frame_count == 1) {
1677 /* Only one frame was attempted; no block-ack will arrive */
1678 status = le16_to_cpu(frame_status[0].status);
1679 seq = le16_to_cpu(frame_status[0].sequence);
1680 idx = SEQ_TO_INDEX(seq);
1681 txq_id = SEQ_TO_QUEUE(seq);
1683 /* FIXME: code repetition */
1684 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1685 agg->frame_count, agg->start_idx, idx);
1687 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1688 info->status.retry_count = tx_resp->failure_frame;
1689 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1690 info->flags |= iwl4965_is_tx_success(status)?
1691 IEEE80211_TX_STAT_ACK : 0;
1692 iwl4965_hwrate_to_tx_control(priv,
1693 le32_to_cpu(tx_resp->rate_n_flags),
1695 /* FIXME: code repetition end */
1697 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1698 status & 0xff, tx_resp->failure_frame);
1699 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1700 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1702 agg->wait_for_ba = 0;
1704 /* Two or more frames were attempted; expect block-ack */
1706 int start = agg->start_idx;
1708 /* Construct bit-map of pending frames within Tx window */
1709 for (i = 0; i < agg->frame_count; i++) {
1711 status = le16_to_cpu(frame_status[i].status);
1712 seq = le16_to_cpu(frame_status[i].sequence);
1713 idx = SEQ_TO_INDEX(seq);
1714 txq_id = SEQ_TO_QUEUE(seq);
1716 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1717 AGG_TX_STATE_ABORT_MSK))
1720 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1721 agg->frame_count, txq_id, idx);
1723 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1725 sc = le16_to_cpu(hdr->seq_ctrl);
1726 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1727 IWL_ERROR("BUG_ON idx doesn't match seq control"
1728 " idx=%d, seq_idx=%d, seq=%d\n",
1734 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1735 i, idx, SEQ_TO_SN(sc));
1739 sh = (start - idx) + 0xff;
1740 bitmap = bitmap << sh;
1743 } else if (sh < -64)
1744 sh = 0xff - (start - idx);
1748 bitmap = bitmap << sh;
1751 bitmap |= (1 << sh);
1752 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1753 start, (u32)(bitmap & 0xFFFFFFFF));
1756 agg->bitmap = bitmap;
1757 agg->start_idx = start;
1758 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1759 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1760 agg->frame_count, agg->start_idx,
1761 (unsigned long long)agg->bitmap);
1764 agg->wait_for_ba = 1;
1771 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1773 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1774 struct iwl_rx_mem_buffer *rxb)
1776 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1777 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1778 int txq_id = SEQ_TO_QUEUE(sequence);
1779 int index = SEQ_TO_INDEX(sequence);
1780 struct iwl_tx_queue *txq = &priv->txq[txq_id];
1781 struct ieee80211_tx_info *info;
1782 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1783 u32 status = le32_to_cpu(tx_resp->status);
1784 #ifdef CONFIG_IWL4965_HT
1785 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1787 struct ieee80211_hdr *hdr;
1791 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1792 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1793 "is out of range [0-%d] %d %d\n", txq_id,
1794 index, txq->q.n_bd, txq->q.write_ptr,
1799 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1800 memset(&info->status, 0, sizeof(info->status));
1802 #ifdef CONFIG_IWL4965_HT
1803 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1804 fc = le16_to_cpu(hdr->frame_control);
1805 if (ieee80211_is_qos_data(fc)) {
1806 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1810 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1811 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1812 IWL_ERROR("Station not known\n");
1816 if (txq->sched_retry) {
1817 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1818 struct iwl_ht_agg *agg = NULL;
1823 agg = &priv->stations[sta_id].tid[tid].agg;
1825 iwl4965_tx_status_reply_tx(priv, agg,
1826 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1828 if ((tx_resp->frame_count == 1) &&
1829 !iwl4965_is_tx_success(status)) {
1830 /* TODO: send BAR */
1833 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1835 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1836 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1837 "%d index %d\n", scd_ssn , index);
1838 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1839 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1841 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1842 txq_id >= 0 && priv->mac80211_registered &&
1843 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1844 /* calculate mac80211 ampdu sw queue to wake */
1845 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1847 if (agg->state == IWL_AGG_OFF)
1848 ieee80211_wake_queue(priv->hw, txq_id);
1850 ieee80211_wake_queue(priv->hw, ampdu_q);
1852 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1855 #endif /* CONFIG_IWL4965_HT */
1857 info->status.retry_count = tx_resp->failure_frame;
1859 iwl4965_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
1860 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1863 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1864 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1865 status, le32_to_cpu(tx_resp->rate_n_flags),
1866 tx_resp->failure_frame);
1868 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1869 #ifdef CONFIG_IWL4965_HT
1871 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1872 if (tid != MAX_TID_COUNT)
1873 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1874 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1875 (txq_id >= 0) && priv->mac80211_registered)
1876 ieee80211_wake_queue(priv->hw, txq_id);
1877 if (tid != MAX_TID_COUNT)
1878 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1881 #endif /* CONFIG_IWL4965_HT */
1883 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1884 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
1888 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1889 struct iwl_rx_mem_buffer *rxb)
1891 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1892 struct iwl_alive_resp *palive;
1893 struct delayed_work *pwork;
1895 palive = &pkt->u.alive_frame;
1897 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1899 palive->is_valid, palive->ver_type,
1900 palive->ver_subtype);
1902 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1903 IWL_DEBUG_INFO("Initialization Alive received.\n");
1904 memcpy(&priv->card_alive_init,
1905 &pkt->u.alive_frame,
1906 sizeof(struct iwl_init_alive_resp));
1907 pwork = &priv->init_alive_start;
1909 IWL_DEBUG_INFO("Runtime Alive received.\n");
1910 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1911 sizeof(struct iwl_alive_resp));
1912 pwork = &priv->alive_start;
1915 /* We delay the ALIVE response by 5ms to
1916 * give the HW RF Kill time to activate... */
1917 if (palive->is_valid == UCODE_VALID_OK)
1918 queue_delayed_work(priv->workqueue, pwork,
1919 msecs_to_jiffies(5));
1921 IWL_WARNING("uCode did not respond OK.\n");
1924 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1925 struct iwl_rx_mem_buffer *rxb)
1927 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1929 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1930 "seq 0x%04X ser 0x%08X\n",
1931 le32_to_cpu(pkt->u.err_resp.error_type),
1932 get_cmd_string(pkt->u.err_resp.cmd_id),
1933 pkt->u.err_resp.cmd_id,
1934 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1935 le32_to_cpu(pkt->u.err_resp.error_info));
1938 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1940 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1942 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1943 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1944 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1945 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1946 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1947 rxon->channel = csa->channel;
1948 priv->staging_rxon.channel = csa->channel;
1951 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1952 struct iwl_rx_mem_buffer *rxb)
1954 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1955 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1956 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1958 if (!report->state) {
1959 IWL_DEBUG(IWL_DL_11H,
1960 "Spectrum Measure Notification: Start\n");
1964 memcpy(&priv->measure_report, report, sizeof(*report));
1965 priv->measurement_status |= MEASUREMENT_READY;
1969 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1970 struct iwl_rx_mem_buffer *rxb)
1972 #ifdef CONFIG_IWLWIFI_DEBUG
1973 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1974 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1975 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1976 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1980 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1981 struct iwl_rx_mem_buffer *rxb)
1983 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1984 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1985 "notification for %s:\n",
1986 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1987 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1990 static void iwl4965_bg_beacon_update(struct work_struct *work)
1992 struct iwl_priv *priv =
1993 container_of(work, struct iwl_priv, beacon_update);
1994 struct sk_buff *beacon;
1996 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1997 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2000 IWL_ERROR("update beacon failed\n");
2004 mutex_lock(&priv->mutex);
2005 /* new beacon skb is allocated every time; dispose previous.*/
2006 if (priv->ibss_beacon)
2007 dev_kfree_skb(priv->ibss_beacon);
2009 priv->ibss_beacon = beacon;
2010 mutex_unlock(&priv->mutex);
2012 iwl4965_send_beacon_cmd(priv);
2015 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2016 struct iwl_rx_mem_buffer *rxb)
2018 #ifdef CONFIG_IWLWIFI_DEBUG
2019 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2020 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2021 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2023 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2024 "tsf %d %d rate %d\n",
2025 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2026 beacon->beacon_notify_hdr.failure_frame,
2027 le32_to_cpu(beacon->ibss_mgr_status),
2028 le32_to_cpu(beacon->high_tsf),
2029 le32_to_cpu(beacon->low_tsf), rate);
2032 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2033 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2034 queue_work(priv->workqueue, &priv->beacon_update);
2037 /* Service response to REPLY_SCAN_CMD (0x80) */
2038 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2039 struct iwl_rx_mem_buffer *rxb)
2041 #ifdef CONFIG_IWLWIFI_DEBUG
2042 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2043 struct iwl4965_scanreq_notification *notif =
2044 (struct iwl4965_scanreq_notification *)pkt->u.raw;
2046 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2050 /* Service SCAN_START_NOTIFICATION (0x82) */
2051 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2052 struct iwl_rx_mem_buffer *rxb)
2054 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2055 struct iwl4965_scanstart_notification *notif =
2056 (struct iwl4965_scanstart_notification *)pkt->u.raw;
2057 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2058 IWL_DEBUG_SCAN("Scan start: "
2060 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2062 notif->band ? "bg" : "a",
2064 notif->tsf_low, notif->status, notif->beacon_timer);
2067 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2068 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2069 struct iwl_rx_mem_buffer *rxb)
2071 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2072 struct iwl4965_scanresults_notification *notif =
2073 (struct iwl4965_scanresults_notification *)pkt->u.raw;
2075 IWL_DEBUG_SCAN("Scan ch.res: "
2077 "(TSF: 0x%08X:%08X) - %d "
2078 "elapsed=%lu usec (%dms since last)\n",
2080 notif->band ? "bg" : "a",
2081 le32_to_cpu(notif->tsf_high),
2082 le32_to_cpu(notif->tsf_low),
2083 le32_to_cpu(notif->statistics[0]),
2084 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2085 jiffies_to_msecs(elapsed_jiffies
2086 (priv->last_scan_jiffies, jiffies)));
2088 priv->last_scan_jiffies = jiffies;
2089 priv->next_scan_jiffies = 0;
2092 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2093 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2094 struct iwl_rx_mem_buffer *rxb)
2096 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2097 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2099 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2100 scan_notif->scanned_channels,
2101 scan_notif->tsf_low,
2102 scan_notif->tsf_high, scan_notif->status);
2104 /* The HW is no longer scanning */
2105 clear_bit(STATUS_SCAN_HW, &priv->status);
2107 /* The scan completion notification came in, so kill that timer... */
2108 cancel_delayed_work(&priv->scan_check);
2110 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2111 (priv->scan_bands == 2) ? "2.4" : "5.2",
2112 jiffies_to_msecs(elapsed_jiffies
2113 (priv->scan_pass_start, jiffies)));
2115 /* Remove this scanned band from the list
2116 * of pending bands to scan */
2119 /* If a request to abort was given, or the scan did not succeed
2120 * then we reset the scan state machine and terminate,
2121 * re-queuing another scan if one has been requested */
2122 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2123 IWL_DEBUG_INFO("Aborted scan completed.\n");
2124 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2126 /* If there are more bands on this scan pass reschedule */
2127 if (priv->scan_bands > 0)
2131 priv->last_scan_jiffies = jiffies;
2132 priv->next_scan_jiffies = 0;
2133 IWL_DEBUG_INFO("Setting scan to off\n");
2135 clear_bit(STATUS_SCANNING, &priv->status);
2137 IWL_DEBUG_INFO("Scan took %dms\n",
2138 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2140 queue_work(priv->workqueue, &priv->scan_completed);
2145 priv->scan_pass_start = jiffies;
2146 queue_work(priv->workqueue, &priv->request_scan);
2149 /* Handle notification from uCode that card's power state is changing
2150 * due to software, hardware, or critical temperature RFKILL */
2151 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2152 struct iwl_rx_mem_buffer *rxb)
2154 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2155 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2156 unsigned long status = priv->status;
2158 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2159 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2160 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2162 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2163 RF_CARD_DISABLED)) {
2165 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2166 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2168 if (!iwl_grab_nic_access(priv)) {
2170 priv, HBUS_TARG_MBX_C,
2171 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2173 iwl_release_nic_access(priv);
2176 if (!(flags & RXON_CARD_DISABLED)) {
2177 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2178 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2179 if (!iwl_grab_nic_access(priv)) {
2181 priv, HBUS_TARG_MBX_C,
2182 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2184 iwl_release_nic_access(priv);
2188 if (flags & RF_CARD_DISABLED) {
2189 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2190 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2191 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2192 if (!iwl_grab_nic_access(priv))
2193 iwl_release_nic_access(priv);
2197 if (flags & HW_CARD_DISABLED)
2198 set_bit(STATUS_RF_KILL_HW, &priv->status);
2200 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2203 if (flags & SW_CARD_DISABLED)
2204 set_bit(STATUS_RF_KILL_SW, &priv->status);
2206 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2208 if (!(flags & RXON_CARD_DISABLED))
2209 iwl4965_scan_cancel(priv);
2211 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2212 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2213 (test_bit(STATUS_RF_KILL_SW, &status) !=
2214 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2215 queue_work(priv->workqueue, &priv->rf_kill);
2217 wake_up_interruptible(&priv->wait_command_queue);
2221 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2223 * Setup the RX handlers for each of the reply types sent from the uCode
2226 * This function chains into the hardware specific files for them to setup
2227 * any hardware specific handlers as well.
2229 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2231 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
2232 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2233 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2234 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2235 iwl4965_rx_spectrum_measure_notif;
2236 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2237 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2238 iwl4965_rx_pm_debug_statistics_notif;
2239 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2242 * The same handler is used for both the REPLY to a discrete
2243 * statistics request from the host as well as for the periodic
2244 * statistics notifications (after received beacons) from the uCode.
2246 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2247 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2249 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2250 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2251 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2252 iwl4965_rx_scan_results_notif;
2253 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2254 iwl4965_rx_scan_complete_notif;
2255 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2256 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2258 /* Set up hardware specific Rx handlers */
2259 priv->cfg->ops->lib->rx_handler_setup(priv);
2263 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2264 * @rxb: Rx buffer to reclaim
2266 * If an Rx buffer has an async callback associated with it the callback
2267 * will be executed. The attached skb (if present) will only be freed
2268 * if the callback returns 1
2270 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2271 struct iwl_rx_mem_buffer *rxb)
2273 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2274 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2275 int txq_id = SEQ_TO_QUEUE(sequence);
2276 int index = SEQ_TO_INDEX(sequence);
2277 int huge = sequence & SEQ_HUGE_FRAME;
2279 struct iwl_cmd *cmd;
2281 /* If a Tx command is being handled and it isn't in the actual
2282 * command queue then there a command routing bug has been introduced
2283 * in the queue management code. */
2284 if (txq_id != IWL_CMD_QUEUE_NUM)
2285 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2286 txq_id, pkt->hdr.cmd);
2287 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2289 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2290 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2292 /* Input error checking is done when commands are added to queue. */
2293 if (cmd->meta.flags & CMD_WANT_SKB) {
2294 cmd->meta.source->u.skb = rxb->skb;
2296 } else if (cmd->meta.u.callback &&
2297 !cmd->meta.u.callback(priv, cmd, rxb->skb))
2300 iwl4965_tx_queue_reclaim(priv, txq_id, index);
2302 if (!(cmd->meta.flags & CMD_ASYNC)) {
2303 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2304 wake_up_interruptible(&priv->wait_command_queue);
2309 * this should be called while priv->lock is locked
2311 static void __iwl_rx_replenish(struct iwl_priv *priv)
2313 iwl_rx_allocate(priv);
2314 iwl_rx_queue_restock(priv);
2319 * iwl_rx_handle - Main entry function for receiving responses from uCode
2321 * Uses the priv->rx_handlers callback function array to invoke
2322 * the appropriate handlers, including command responses,
2323 * frame-received notifications, and other notifications.
2325 void iwl_rx_handle(struct iwl_priv *priv)
2327 struct iwl_rx_mem_buffer *rxb;
2328 struct iwl_rx_packet *pkt;
2329 struct iwl_rx_queue *rxq = &priv->rxq;
2332 unsigned long flags;
2336 /* uCode's read index (stored in shared DRAM) indicates the last Rx
2337 * buffer that the driver may process (last buffer filled by ucode). */
2338 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2341 /* Rx interrupt, but nothing sent from uCode */
2343 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2345 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2349 rxb = rxq->queue[i];
2351 /* If an RXB doesn't have a Rx queue slot associated with it,
2352 * then a bug has been introduced in the queue refilling
2353 * routines -- catch it here */
2354 BUG_ON(rxb == NULL);
2356 rxq->queue[i] = NULL;
2358 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2359 priv->hw_params.rx_buf_size,
2360 PCI_DMA_FROMDEVICE);
2361 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2363 /* Reclaim a command buffer only if this packet is a response
2364 * to a (driver-originated) command.
2365 * If the packet (e.g. Rx frame) originated from uCode,
2366 * there is no command buffer to reclaim.
2367 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2368 * but apparently a few don't get set; catch them here. */
2369 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2370 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2371 (pkt->hdr.cmd != REPLY_RX) &&
2372 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2373 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2374 (pkt->hdr.cmd != REPLY_TX);
2376 /* Based on type of command response or notification,
2377 * handle those that need handling via function in
2378 * rx_handlers table. See iwl4965_setup_rx_handlers() */
2379 if (priv->rx_handlers[pkt->hdr.cmd]) {
2380 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2381 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2382 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2384 /* No handling needed */
2385 IWL_DEBUG(IWL_DL_RX,
2386 "r %d i %d No handler needed for %s, 0x%02x\n",
2387 r, i, get_cmd_string(pkt->hdr.cmd),
2392 /* Invoke any callbacks, transfer the skb to caller, and
2393 * fire off the (possibly) blocking iwl_send_cmd()
2394 * as we reclaim the driver command queue */
2395 if (rxb && rxb->skb)
2396 iwl4965_tx_cmd_complete(priv, rxb);
2398 IWL_WARNING("Claim null rxb?\n");
2401 /* For now we just don't re-use anything. We can tweak this
2402 * later to try and re-use notification packets and SKBs that
2403 * fail to Rx correctly */
2404 if (rxb->skb != NULL) {
2405 priv->alloc_rxb_skb--;
2406 dev_kfree_skb_any(rxb->skb);
2410 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2411 priv->hw_params.rx_buf_size,
2412 PCI_DMA_FROMDEVICE);
2413 spin_lock_irqsave(&rxq->lock, flags);
2414 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2415 spin_unlock_irqrestore(&rxq->lock, flags);
2416 i = (i + 1) & RX_QUEUE_MASK;
2417 /* If there are a lot of unused frames,
2418 * restock the Rx queue so ucode wont assert. */
2423 __iwl_rx_replenish(priv);
2429 /* Backtrack one entry */
2431 iwl_rx_queue_restock(priv);
2433 /* Convert linear signal-to-noise ratio into dB */
2434 static u8 ratio2dB[100] = {
2435 /* 0 1 2 3 4 5 6 7 8 9 */
2436 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2437 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2438 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2439 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2440 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2441 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2442 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2443 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2444 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2445 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2448 /* Calculates a relative dB value from a ratio of linear
2449 * (i.e. not dB) signal levels.
2450 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2451 int iwl4965_calc_db_from_ratio(int sig_ratio)
2453 /* 1000:1 or higher just report as 60 dB */
2454 if (sig_ratio >= 1000)
2457 /* 100:1 or higher, divide by 10 and use table,
2458 * add 20 dB to make up for divide by 10 */
2459 if (sig_ratio >= 100)
2460 return (20 + (int)ratio2dB[sig_ratio/10]);
2462 /* We shouldn't see this */
2466 /* Use table for ratios 1:1 - 99:1 */
2467 return (int)ratio2dB[sig_ratio];
2470 #define PERFECT_RSSI (-20) /* dBm */
2471 #define WORST_RSSI (-95) /* dBm */
2472 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2474 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2475 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2476 * about formulas used below. */
2477 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2480 int degradation = PERFECT_RSSI - rssi_dbm;
2482 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2483 * as indicator; formula is (signal dbm - noise dbm).
2484 * SNR at or above 40 is a great signal (100%).
2485 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2486 * Weakest usable signal is usually 10 - 15 dB SNR. */
2488 if (rssi_dbm - noise_dbm >= 40)
2490 else if (rssi_dbm < noise_dbm)
2492 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2494 /* Else use just the signal level.
2495 * This formula is a least squares fit of data points collected and
2496 * compared with a reference system that had a percentage (%) display
2497 * for signal quality. */
2499 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2500 (15 * RSSI_RANGE + 62 * degradation)) /
2501 (RSSI_RANGE * RSSI_RANGE);
2505 else if (sig_qual < 1)
2511 #ifdef CONFIG_IWLWIFI_DEBUG
2512 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2514 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2515 DECLARE_MAC_BUF(mac);
2517 IWL_DEBUG_RADIO("RX CONFIG:\n");
2518 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2519 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2520 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2521 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2522 le32_to_cpu(rxon->filter_flags));
2523 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2524 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2525 rxon->ofdm_basic_rates);
2526 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2527 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2528 print_mac(mac, rxon->node_addr));
2529 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2530 print_mac(mac, rxon->bssid_addr));
2531 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2535 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2537 IWL_DEBUG_ISR("Enabling interrupts\n");
2538 set_bit(STATUS_INT_ENABLED, &priv->status);
2539 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2542 /* call this function to flush any scheduled tasklet */
2543 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2545 /* wait to make sure we flush pedding tasklet*/
2546 synchronize_irq(priv->pci_dev->irq);
2547 tasklet_kill(&priv->irq_tasklet);
2550 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2552 clear_bit(STATUS_INT_ENABLED, &priv->status);
2554 /* disable interrupts from uCode/NIC to host */
2555 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2557 /* acknowledge/clear/reset any interrupts still pending
2558 * from uCode or flow handler (Rx/Tx DMA) */
2559 iwl_write32(priv, CSR_INT, 0xffffffff);
2560 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2561 IWL_DEBUG_ISR("Disabled interrupts\n");
2566 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2568 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2570 /* Set the FW error flag -- cleared on iwl4965_down */
2571 set_bit(STATUS_FW_ERROR, &priv->status);
2573 /* Cancel currently queued command. */
2574 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2576 #ifdef CONFIG_IWLWIFI_DEBUG
2577 if (priv->debug_level & IWL_DL_FW_ERRORS) {
2578 iwl_dump_nic_error_log(priv);
2579 iwl_dump_nic_event_log(priv);
2580 iwl4965_print_rx_config_cmd(priv);
2584 wake_up_interruptible(&priv->wait_command_queue);
2586 /* Keep the restart process from trying to send host
2587 * commands by clearing the INIT status bit */
2588 clear_bit(STATUS_READY, &priv->status);
2590 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2591 IWL_DEBUG(IWL_DL_FW_ERRORS,
2592 "Restarting adapter due to uCode error.\n");
2594 if (iwl_is_associated(priv)) {
2595 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2596 sizeof(priv->recovery_rxon));
2597 priv->error_recovering = 1;
2599 if (priv->cfg->mod_params->restart_fw)
2600 queue_work(priv->workqueue, &priv->restart);
2604 static void iwl4965_error_recovery(struct iwl_priv *priv)
2606 unsigned long flags;
2608 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2609 sizeof(priv->staging_rxon));
2610 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2611 iwl4965_commit_rxon(priv);
2613 iwl_rxon_add_station(priv, priv->bssid, 1);
2615 spin_lock_irqsave(&priv->lock, flags);
2616 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2617 priv->error_recovering = 0;
2618 spin_unlock_irqrestore(&priv->lock, flags);
2621 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2623 u32 inta, handled = 0;
2625 unsigned long flags;
2626 #ifdef CONFIG_IWLWIFI_DEBUG
2630 spin_lock_irqsave(&priv->lock, flags);
2632 /* Ack/clear/reset pending uCode interrupts.
2633 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2634 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2635 inta = iwl_read32(priv, CSR_INT);
2636 iwl_write32(priv, CSR_INT, inta);
2638 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2639 * Any new interrupts that happen after this, either while we're
2640 * in this tasklet, or later, will show up in next ISR/tasklet. */
2641 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2642 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2644 #ifdef CONFIG_IWLWIFI_DEBUG
2645 if (priv->debug_level & IWL_DL_ISR) {
2646 /* just for debug */
2647 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2648 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2649 inta, inta_mask, inta_fh);
2653 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2654 * atomic, make sure that inta covers all the interrupts that
2655 * we've discovered, even if FH interrupt came in just after
2656 * reading CSR_INT. */
2657 if (inta_fh & CSR49_FH_INT_RX_MASK)
2658 inta |= CSR_INT_BIT_FH_RX;
2659 if (inta_fh & CSR49_FH_INT_TX_MASK)
2660 inta |= CSR_INT_BIT_FH_TX;
2662 /* Now service all interrupt bits discovered above. */
2663 if (inta & CSR_INT_BIT_HW_ERR) {
2664 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2666 /* Tell the device to stop sending interrupts */
2667 iwl4965_disable_interrupts(priv);
2669 iwl4965_irq_handle_error(priv);
2671 handled |= CSR_INT_BIT_HW_ERR;
2673 spin_unlock_irqrestore(&priv->lock, flags);
2678 #ifdef CONFIG_IWLWIFI_DEBUG
2679 if (priv->debug_level & (IWL_DL_ISR)) {
2680 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2681 if (inta & CSR_INT_BIT_SCD)
2682 IWL_DEBUG_ISR("Scheduler finished to transmit "
2683 "the frame/frames.\n");
2685 /* Alive notification via Rx interrupt will do the real work */
2686 if (inta & CSR_INT_BIT_ALIVE)
2687 IWL_DEBUG_ISR("Alive interrupt\n");
2690 /* Safely ignore these bits for debug checks below */
2691 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2693 /* HW RF KILL switch toggled */
2694 if (inta & CSR_INT_BIT_RF_KILL) {
2696 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2697 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2700 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2701 hw_rf_kill ? "disable radio":"enable radio");
2703 /* Queue restart only if RF_KILL switch was set to "kill"
2704 * when we loaded driver, and is now set to "enable".
2705 * After we're Alive, RF_KILL gets handled by
2706 * iwl4965_rx_card_state_notif() */
2707 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2708 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2709 queue_work(priv->workqueue, &priv->restart);
2712 handled |= CSR_INT_BIT_RF_KILL;
2715 /* Chip got too hot and stopped itself */
2716 if (inta & CSR_INT_BIT_CT_KILL) {
2717 IWL_ERROR("Microcode CT kill error detected.\n");
2718 handled |= CSR_INT_BIT_CT_KILL;
2721 /* Error detected by uCode */
2722 if (inta & CSR_INT_BIT_SW_ERR) {
2723 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2725 iwl4965_irq_handle_error(priv);
2726 handled |= CSR_INT_BIT_SW_ERR;
2729 /* uCode wakes up after power-down sleep */
2730 if (inta & CSR_INT_BIT_WAKEUP) {
2731 IWL_DEBUG_ISR("Wakeup interrupt\n");
2732 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2733 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2734 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2735 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2736 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2737 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2738 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2740 handled |= CSR_INT_BIT_WAKEUP;
2743 /* All uCode command responses, including Tx command responses,
2744 * Rx "responses" (frame-received notification), and other
2745 * notifications from uCode come through here*/
2746 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2747 iwl_rx_handle(priv);
2748 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2751 if (inta & CSR_INT_BIT_FH_TX) {
2752 IWL_DEBUG_ISR("Tx interrupt\n");
2753 handled |= CSR_INT_BIT_FH_TX;
2754 /* FH finished to write, send event */
2755 priv->ucode_write_complete = 1;
2756 wake_up_interruptible(&priv->wait_command_queue);
2759 if (inta & ~handled)
2760 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2762 if (inta & ~CSR_INI_SET_MASK) {
2763 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2764 inta & ~CSR_INI_SET_MASK);
2765 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2768 /* Re-enable all interrupts */
2769 /* only Re-enable if diabled by irq */
2770 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2771 iwl4965_enable_interrupts(priv);
2773 #ifdef CONFIG_IWLWIFI_DEBUG
2774 if (priv->debug_level & (IWL_DL_ISR)) {
2775 inta = iwl_read32(priv, CSR_INT);
2776 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2777 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2778 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2779 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2782 spin_unlock_irqrestore(&priv->lock, flags);
2785 static irqreturn_t iwl4965_isr(int irq, void *data)
2787 struct iwl_priv *priv = data;
2788 u32 inta, inta_mask;
2793 spin_lock(&priv->lock);
2795 /* Disable (but don't clear!) interrupts here to avoid
2796 * back-to-back ISRs and sporadic interrupts from our NIC.
2797 * If we have something to service, the tasklet will re-enable ints.
2798 * If we *don't* have something, we'll re-enable before leaving here. */
2799 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2800 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2802 /* Discover which interrupts are active/pending */
2803 inta = iwl_read32(priv, CSR_INT);
2804 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2806 /* Ignore interrupt if there's nothing in NIC to service.
2807 * This may be due to IRQ shared with another device,
2808 * or due to sporadic interrupts thrown from our NIC. */
2809 if (!inta && !inta_fh) {
2810 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2814 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2815 /* Hardware disappeared. It might have already raised
2817 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2821 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2822 inta, inta_mask, inta_fh);
2824 inta &= ~CSR_INT_BIT_SCD;
2826 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2827 if (likely(inta || inta_fh))
2828 tasklet_schedule(&priv->irq_tasklet);
2831 spin_unlock(&priv->lock);
2835 /* re-enable interrupts here since we don't have anything to service. */
2836 /* only Re-enable if diabled by irq */
2837 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2838 iwl4965_enable_interrupts(priv);
2839 spin_unlock(&priv->lock);
2843 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2844 * sending probe req. This should be set long enough to hear probe responses
2845 * from more than one AP. */
2846 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2847 #define IWL_ACTIVE_DWELL_TIME_52 (10)
2849 /* For faster active scanning, scan will move to the next channel if fewer than
2850 * PLCP_QUIET_THRESH packets are heard on this channel within
2851 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2852 * time if it's a quiet channel (nothing responded to our probe, and there's
2853 * no other traffic).
2854 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2855 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2856 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2858 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2859 * Must be set longer than active dwell time.
2860 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2861 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2862 #define IWL_PASSIVE_DWELL_TIME_52 (10)
2863 #define IWL_PASSIVE_DWELL_BASE (100)
2864 #define IWL_CHANNEL_TUNE_TIME 5
2866 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2867 enum ieee80211_band band)
2869 if (band == IEEE80211_BAND_5GHZ)
2870 return IWL_ACTIVE_DWELL_TIME_52;
2872 return IWL_ACTIVE_DWELL_TIME_24;
2875 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2876 enum ieee80211_band band)
2878 u16 active = iwl4965_get_active_dwell_time(priv, band);
2879 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2880 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2881 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2883 if (iwl_is_associated(priv)) {
2884 /* If we're associated, we clamp the maximum passive
2885 * dwell time to be 98% of the beacon interval (minus
2886 * 2 * channel tune time) */
2887 passive = priv->beacon_int;
2888 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2889 passive = IWL_PASSIVE_DWELL_BASE;
2890 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2893 if (passive <= active)
2894 passive = active + 1;
2899 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2900 enum ieee80211_band band,
2901 u8 is_active, u8 direct_mask,
2902 struct iwl4965_scan_channel *scan_ch)
2904 const struct ieee80211_channel *channels = NULL;
2905 const struct ieee80211_supported_band *sband;
2906 const struct iwl_channel_info *ch_info;
2907 u16 passive_dwell = 0;
2908 u16 active_dwell = 0;
2911 sband = iwl_get_hw_mode(priv, band);
2915 channels = sband->channels;
2917 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2918 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2920 for (i = 0, added = 0; i < sband->n_channels; i++) {
2921 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2924 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2926 ch_info = iwl_get_channel_info(priv, band,
2928 if (!is_channel_valid(ch_info)) {
2929 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2934 if (!is_active || is_channel_passive(ch_info) ||
2935 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2936 scan_ch->type = 0; /* passive */
2938 scan_ch->type = 1; /* active */
2940 if (scan_ch->type & 1)
2941 scan_ch->type |= (direct_mask << 1);
2943 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2944 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2946 /* Set txpower levels to defaults */
2947 scan_ch->tpc.dsp_atten = 110;
2948 /* scan_pwr_info->tpc.dsp_atten; */
2950 /*scan_pwr_info->tpc.tx_gain; */
2951 if (band == IEEE80211_BAND_5GHZ)
2952 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2954 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2955 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2957 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2961 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2963 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2964 (scan_ch->type & 1) ?
2965 active_dwell : passive_dwell);
2971 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2975 /******************************************************************************
2977 * uCode download functions
2979 ******************************************************************************/
2981 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2983 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2984 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2985 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2986 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2987 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2988 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2991 static void iwl4965_nic_start(struct iwl_priv *priv)
2993 /* Remove all resets to allow NIC to operate */
2994 iwl_write32(priv, CSR_RESET, 0);
2999 * iwl4965_read_ucode - Read uCode images from disk file.
3001 * Copy into buffers for card to fetch via bus-mastering
3003 static int iwl4965_read_ucode(struct iwl_priv *priv)
3005 struct iwl4965_ucode *ucode;
3007 const struct firmware *ucode_raw;
3008 const char *name = priv->cfg->fw_name;
3011 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3013 /* Ask kernel firmware_class module to get the boot firmware off disk.
3014 * request_firmware() is synchronous, file is in memory on return. */
3015 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3017 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3022 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3023 name, ucode_raw->size);
3025 /* Make sure that we got at least our header! */
3026 if (ucode_raw->size < sizeof(*ucode)) {
3027 IWL_ERROR("File size way too small!\n");
3032 /* Data from ucode file: header followed by uCode images */
3033 ucode = (void *)ucode_raw->data;
3035 ver = le32_to_cpu(ucode->ver);
3036 inst_size = le32_to_cpu(ucode->inst_size);
3037 data_size = le32_to_cpu(ucode->data_size);
3038 init_size = le32_to_cpu(ucode->init_size);
3039 init_data_size = le32_to_cpu(ucode->init_data_size);
3040 boot_size = le32_to_cpu(ucode->boot_size);
3042 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3043 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3045 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3047 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3049 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3051 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3054 /* Verify size of file vs. image size info in file's header */
3055 if (ucode_raw->size < sizeof(*ucode) +
3056 inst_size + data_size + init_size +
3057 init_data_size + boot_size) {
3059 IWL_DEBUG_INFO("uCode file size %d too small\n",
3060 (int)ucode_raw->size);
3065 /* Verify that uCode images will fit in card's SRAM */
3066 if (inst_size > priv->hw_params.max_inst_size) {
3067 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3073 if (data_size > priv->hw_params.max_data_size) {
3074 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3079 if (init_size > priv->hw_params.max_inst_size) {
3081 ("uCode init instr len %d too large to fit in\n",
3086 if (init_data_size > priv->hw_params.max_data_size) {
3088 ("uCode init data len %d too large to fit in\n",
3093 if (boot_size > priv->hw_params.max_bsm_size) {
3095 ("uCode boot instr len %d too large to fit in\n",
3101 /* Allocate ucode buffers for card's bus-master loading ... */
3103 /* Runtime instructions and 2 copies of data:
3104 * 1) unmodified from disk
3105 * 2) backup cache for save/restore during power-downs */
3106 priv->ucode_code.len = inst_size;
3107 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3109 priv->ucode_data.len = data_size;
3110 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3112 priv->ucode_data_backup.len = data_size;
3113 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3115 /* Initialization instructions and data */
3116 if (init_size && init_data_size) {
3117 priv->ucode_init.len = init_size;
3118 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3120 priv->ucode_init_data.len = init_data_size;
3121 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3123 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3127 /* Bootstrap (instructions only, no data) */
3129 priv->ucode_boot.len = boot_size;
3130 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3132 if (!priv->ucode_boot.v_addr)
3136 /* Copy images into buffers for card's bus-master reads ... */
3138 /* Runtime instructions (first block of data in file) */
3139 src = &ucode->data[0];
3140 len = priv->ucode_code.len;
3141 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3142 memcpy(priv->ucode_code.v_addr, src, len);
3143 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3144 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3146 /* Runtime data (2nd block)
3147 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
3148 src = &ucode->data[inst_size];
3149 len = priv->ucode_data.len;
3150 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3151 memcpy(priv->ucode_data.v_addr, src, len);
3152 memcpy(priv->ucode_data_backup.v_addr, src, len);
3154 /* Initialization instructions (3rd block) */
3156 src = &ucode->data[inst_size + data_size];
3157 len = priv->ucode_init.len;
3158 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3160 memcpy(priv->ucode_init.v_addr, src, len);
3163 /* Initialization data (4th block) */
3164 if (init_data_size) {
3165 src = &ucode->data[inst_size + data_size + init_size];
3166 len = priv->ucode_init_data.len;
3167 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3169 memcpy(priv->ucode_init_data.v_addr, src, len);
3172 /* Bootstrap instructions (5th block) */
3173 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3174 len = priv->ucode_boot.len;
3175 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3176 memcpy(priv->ucode_boot.v_addr, src, len);
3178 /* We have our copies now, allow OS release its copies */
3179 release_firmware(ucode_raw);
3183 IWL_ERROR("failed to allocate pci memory\n");
3185 iwl4965_dealloc_ucode_pci(priv);
3188 release_firmware(ucode_raw);
3195 * iwl_alive_start - called after REPLY_ALIVE notification received
3196 * from protocol/runtime uCode (initialization uCode's
3197 * Alive gets handled by iwl_init_alive_start()).
3199 static void iwl_alive_start(struct iwl_priv *priv)
3203 IWL_DEBUG_INFO("Runtime Alive received.\n");
3205 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3206 /* We had an error bringing up the hardware, so take it
3207 * all the way back down so we can try again */
3208 IWL_DEBUG_INFO("Alive failed.\n");
3212 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3213 * This is a paranoid check, because we would not have gotten the
3214 * "runtime" alive if code weren't properly loaded. */
3215 if (iwl_verify_ucode(priv)) {
3216 /* Runtime instruction load was bad;
3217 * take it all the way back down so we can try again */
3218 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3222 iwlcore_clear_stations_table(priv);
3223 ret = priv->cfg->ops->lib->alive_notify(priv);
3225 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3230 /* After the ALIVE response, we can send host commands to 4965 uCode */
3231 set_bit(STATUS_ALIVE, &priv->status);
3233 /* Clear out the uCode error bit if it is set */
3234 clear_bit(STATUS_FW_ERROR, &priv->status);
3236 if (iwl_is_rfkill(priv))
3239 ieee80211_wake_queues(priv->hw);
3241 priv->active_rate = priv->rates_mask;
3242 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3244 if (iwl_is_associated(priv)) {
3245 struct iwl_rxon_cmd *active_rxon =
3246 (struct iwl_rxon_cmd *)&priv->active_rxon;
3248 memcpy(&priv->staging_rxon, &priv->active_rxon,
3249 sizeof(priv->staging_rxon));
3250 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3252 /* Initialize our rx_config data */
3253 iwl4965_connection_init_rx_config(priv);
3254 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3257 /* Configure Bluetooth device coexistence support */
3258 iwl4965_send_bt_config(priv);
3260 iwl_reset_run_time_calib(priv);
3262 /* Configure the adapter for unassociated operation */
3263 iwl4965_commit_rxon(priv);
3265 /* At this point, the NIC is initialized and operational */
3266 iwl4965_rf_kill_ct_config(priv);
3268 iwl_leds_register(priv);
3270 IWL_DEBUG_INFO("ALIVE processing complete.\n");
3271 set_bit(STATUS_READY, &priv->status);
3272 wake_up_interruptible(&priv->wait_command_queue);
3274 if (priv->error_recovering)
3275 iwl4965_error_recovery(priv);
3277 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3278 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3282 queue_work(priv->workqueue, &priv->restart);
3285 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3287 static void __iwl4965_down(struct iwl_priv *priv)
3289 unsigned long flags;
3290 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3292 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3295 set_bit(STATUS_EXIT_PENDING, &priv->status);
3297 iwl_leds_unregister(priv);
3299 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3301 iwlcore_clear_stations_table(priv);
3303 /* Unblock any waiting calls */
3304 wake_up_interruptible_all(&priv->wait_command_queue);
3306 /* Wipe out the EXIT_PENDING status bit if we are not actually
3307 * exiting the module */
3309 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3311 /* stop and reset the on-board processor */
3312 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3314 /* tell the device to stop sending interrupts */
3315 spin_lock_irqsave(&priv->lock, flags);
3316 iwl4965_disable_interrupts(priv);
3317 spin_unlock_irqrestore(&priv->lock, flags);
3318 iwl_synchronize_irq(priv);
3320 if (priv->mac80211_registered)
3321 ieee80211_stop_queues(priv->hw);
3323 /* If we have not previously called iwl4965_init() then
3324 * clear all bits but the RF Kill and SUSPEND bits and return */
3325 if (!iwl_is_init(priv)) {
3326 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3328 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3330 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3331 STATUS_GEO_CONFIGURED |
3332 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3337 /* ...otherwise clear out all the status bits but the RF Kill and
3338 * SUSPEND bits and continue taking the NIC down. */
3339 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3341 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3343 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3344 STATUS_GEO_CONFIGURED |
3345 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3347 test_bit(STATUS_FW_ERROR, &priv->status) <<
3350 spin_lock_irqsave(&priv->lock, flags);
3351 iwl_clear_bit(priv, CSR_GP_CNTRL,
3352 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3353 spin_unlock_irqrestore(&priv->lock, flags);
3355 iwl_txq_ctx_stop(priv);
3358 spin_lock_irqsave(&priv->lock, flags);
3359 if (!iwl_grab_nic_access(priv)) {
3360 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3361 APMG_CLK_VAL_DMA_CLK_RQT);
3362 iwl_release_nic_access(priv);
3364 spin_unlock_irqrestore(&priv->lock, flags);
3368 /* FIXME: apm_ops.suspend(priv) */
3369 priv->cfg->ops->lib->apm_ops.reset(priv);
3370 priv->cfg->ops->lib->free_shared_mem(priv);
3373 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3375 if (priv->ibss_beacon)
3376 dev_kfree_skb(priv->ibss_beacon);
3377 priv->ibss_beacon = NULL;
3379 /* clear out any free frames */
3380 iwl_clear_free_frames(priv);
3383 static void iwl4965_down(struct iwl_priv *priv)
3385 mutex_lock(&priv->mutex);
3386 __iwl4965_down(priv);
3387 mutex_unlock(&priv->mutex);
3389 iwl4965_cancel_deferred_work(priv);
3392 #define MAX_HW_RESTARTS 5
3394 static int __iwl4965_up(struct iwl_priv *priv)
3399 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3400 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3404 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3405 IWL_WARNING("Radio disabled by SW RF kill (module "
3407 iwl_rfkill_set_hw_state(priv);
3411 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3412 IWL_ERROR("ucode not available for device bringup\n");
3416 /* If platform's RF_KILL switch is NOT set to KILL */
3417 if (iwl_read32(priv, CSR_GP_CNTRL) &
3418 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3419 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3421 set_bit(STATUS_RF_KILL_HW, &priv->status);
3422 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3423 iwl_rfkill_set_hw_state(priv);
3424 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3429 iwl_rfkill_set_hw_state(priv);
3430 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3432 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3434 IWL_ERROR("Unable to allocate shared memory\n");
3438 ret = iwl_hw_nic_init(priv);
3440 IWL_ERROR("Unable to init nic\n");
3444 /* make sure rfkill handshake bits are cleared */
3445 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3446 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3447 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3449 /* clear (again), then enable host interrupts */
3450 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3451 iwl4965_enable_interrupts(priv);
3453 /* really make sure rfkill handshake bits are cleared */
3454 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3455 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3457 /* Copy original ucode data image from disk into backup cache.
3458 * This will be used to initialize the on-board processor's
3459 * data SRAM for a clean start when the runtime program first loads. */
3460 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3461 priv->ucode_data.len);
3463 /* We return success when we resume from suspend and rf_kill is on. */
3464 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3467 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3469 iwlcore_clear_stations_table(priv);
3471 /* load bootstrap state machine,
3472 * load bootstrap program into processor's memory,
3473 * prepare to load the "initialize" uCode */
3474 ret = priv->cfg->ops->lib->load_ucode(priv);
3477 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3481 /* start card; "initialize" will load runtime ucode */
3482 iwl4965_nic_start(priv);
3484 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3489 set_bit(STATUS_EXIT_PENDING, &priv->status);
3490 __iwl4965_down(priv);
3492 /* tried to restart and config the device for as long as our
3493 * patience could withstand */
3494 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3499 /*****************************************************************************
3501 * Workqueue callbacks
3503 *****************************************************************************/
3505 static void iwl_bg_init_alive_start(struct work_struct *data)
3507 struct iwl_priv *priv =
3508 container_of(data, struct iwl_priv, init_alive_start.work);
3510 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3513 mutex_lock(&priv->mutex);
3514 priv->cfg->ops->lib->init_alive_start(priv);
3515 mutex_unlock(&priv->mutex);
3518 static void iwl_bg_alive_start(struct work_struct *data)
3520 struct iwl_priv *priv =
3521 container_of(data, struct iwl_priv, alive_start.work);
3523 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3526 mutex_lock(&priv->mutex);
3527 iwl_alive_start(priv);
3528 mutex_unlock(&priv->mutex);
3531 static void iwl4965_bg_rf_kill(struct work_struct *work)
3533 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3535 wake_up_interruptible(&priv->wait_command_queue);
3537 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3540 mutex_lock(&priv->mutex);
3542 if (!iwl_is_rfkill(priv)) {
3543 IWL_DEBUG(IWL_DL_RF_KILL,
3544 "HW and/or SW RF Kill no longer active, restarting "
3546 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3547 queue_work(priv->workqueue, &priv->restart);
3549 /* make sure mac80211 stop sending Tx frame */
3550 if (priv->mac80211_registered)
3551 ieee80211_stop_queues(priv->hw);
3553 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3554 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3555 "disabled by SW switch\n");
3557 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3558 "Kill switch must be turned off for "
3559 "wireless networking to work.\n");
3561 iwl_rfkill_set_hw_state(priv);
3563 mutex_unlock(&priv->mutex);
3566 static void iwl4965_bg_set_monitor(struct work_struct *work)
3568 struct iwl_priv *priv = container_of(work,
3569 struct iwl_priv, set_monitor);
3571 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3573 mutex_lock(&priv->mutex);
3575 if (!iwl_is_ready(priv))
3576 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3578 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3579 IWL_ERROR("iwl4965_set_mode() failed\n");
3581 mutex_unlock(&priv->mutex);
3584 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3586 static void iwl4965_bg_scan_check(struct work_struct *data)
3588 struct iwl_priv *priv =
3589 container_of(data, struct iwl_priv, scan_check.work);
3591 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3594 mutex_lock(&priv->mutex);
3595 if (test_bit(STATUS_SCANNING, &priv->status) ||
3596 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3597 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3599 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3601 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3602 iwl4965_send_scan_abort(priv);
3604 mutex_unlock(&priv->mutex);
3607 static void iwl4965_bg_request_scan(struct work_struct *data)
3609 struct iwl_priv *priv =
3610 container_of(data, struct iwl_priv, request_scan);
3611 struct iwl_host_cmd cmd = {
3612 .id = REPLY_SCAN_CMD,
3613 .len = sizeof(struct iwl4965_scan_cmd),
3614 .meta.flags = CMD_SIZE_HUGE,
3616 struct iwl4965_scan_cmd *scan;
3617 struct ieee80211_conf *conf = NULL;
3619 enum ieee80211_band band;
3623 conf = ieee80211_get_hw_conf(priv->hw);
3625 mutex_lock(&priv->mutex);
3627 if (!iwl_is_ready(priv)) {
3628 IWL_WARNING("request scan called when driver not ready.\n");
3632 /* Make sure the scan wasn't cancelled before this queued work
3633 * was given the chance to run... */
3634 if (!test_bit(STATUS_SCANNING, &priv->status))
3637 /* This should never be called or scheduled if there is currently
3638 * a scan active in the hardware. */
3639 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3640 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3641 "Ignoring second request.\n");
3646 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3647 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3651 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3652 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3656 if (iwl_is_rfkill(priv)) {
3657 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3661 if (!test_bit(STATUS_READY, &priv->status)) {
3662 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3666 if (!priv->scan_bands) {
3667 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3672 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3673 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3680 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3682 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3683 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3685 if (iwl_is_associated(priv)) {
3688 u32 suspend_time = 100;
3689 u32 scan_suspend_time = 100;
3690 unsigned long flags;
3692 IWL_DEBUG_INFO("Scanning while associated...\n");
3694 spin_lock_irqsave(&priv->lock, flags);
3695 interval = priv->beacon_int;
3696 spin_unlock_irqrestore(&priv->lock, flags);
3698 scan->suspend_time = 0;
3699 scan->max_out_time = cpu_to_le32(200 * 1024);
3701 interval = suspend_time;
3703 extra = (suspend_time / interval) << 22;
3704 scan_suspend_time = (extra |
3705 ((suspend_time % interval) * 1024));
3706 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3707 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3708 scan_suspend_time, interval);
3711 /* We should add the ability for user to lock to PASSIVE ONLY */
3712 if (priv->one_direct_scan) {
3714 ("Kicking off one direct scan for '%s'\n",
3715 iwl4965_escape_essid(priv->direct_ssid,
3716 priv->direct_ssid_len));
3717 scan->direct_scan[0].id = WLAN_EID_SSID;
3718 scan->direct_scan[0].len = priv->direct_ssid_len;
3719 memcpy(scan->direct_scan[0].ssid,
3720 priv->direct_ssid, priv->direct_ssid_len);
3722 } else if (!iwl_is_associated(priv) && priv->essid_len) {
3724 ("Kicking off one direct scan for '%s' when not associated\n",
3725 iwl4965_escape_essid(priv->essid, priv->essid_len));
3726 scan->direct_scan[0].id = WLAN_EID_SSID;
3727 scan->direct_scan[0].len = priv->essid_len;
3728 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3731 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3735 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3736 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3737 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3740 switch (priv->scan_bands) {
3742 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3743 scan->tx_cmd.rate_n_flags =
3744 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3745 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3747 scan->good_CRC_th = 0;
3748 band = IEEE80211_BAND_2GHZ;
3752 scan->tx_cmd.rate_n_flags =
3753 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3754 RATE_MCS_ANT_B_MSK);
3755 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3756 band = IEEE80211_BAND_5GHZ;
3760 IWL_WARNING("Invalid scan band count\n");
3764 /* We don't build a direct scan probe request; the uCode will do
3765 * that based on the direct_mask added to each channel entry */
3766 cmd_len = iwl4965_fill_probe_req(priv, band,
3767 (struct ieee80211_mgmt *)scan->data,
3768 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3770 scan->tx_cmd.len = cpu_to_le16(cmd_len);
3771 /* select Rx chains */
3773 /* Force use of chains B and C (0x6) for scan Rx.
3774 * Avoid A (0x1) because of its off-channel reception on A-band.
3775 * MIMO is not used here, but value is required to make uCode happy. */
3776 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3777 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3778 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3779 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3781 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3782 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3785 scan->channel_count =
3786 iwl4965_get_channels_for_scan(
3787 priv, band, 1, /* active */
3789 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3791 scan->channel_count =
3792 iwl4965_get_channels_for_scan(
3793 priv, band, 0, /* passive */
3795 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3797 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3798 RXON_FILTER_BCON_AWARE_MSK);
3799 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3800 scan->channel_count * sizeof(struct iwl4965_scan_channel);
3802 scan->len = cpu_to_le16(cmd.len);
3804 set_bit(STATUS_SCAN_HW, &priv->status);
3805 ret = iwl_send_cmd_sync(priv, &cmd);
3809 queue_delayed_work(priv->workqueue, &priv->scan_check,
3810 IWL_SCAN_CHECK_WATCHDOG);
3812 mutex_unlock(&priv->mutex);
3816 /* inform mac80211 scan aborted */
3817 queue_work(priv->workqueue, &priv->scan_completed);
3818 mutex_unlock(&priv->mutex);
3821 static void iwl4965_bg_up(struct work_struct *data)
3823 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3825 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3828 mutex_lock(&priv->mutex);
3830 mutex_unlock(&priv->mutex);
3833 static void iwl4965_bg_restart(struct work_struct *data)
3835 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3837 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3841 queue_work(priv->workqueue, &priv->up);
3844 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3846 struct iwl_priv *priv =
3847 container_of(data, struct iwl_priv, rx_replenish);
3849 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3852 mutex_lock(&priv->mutex);
3853 iwl_rx_replenish(priv);
3854 mutex_unlock(&priv->mutex);
3857 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3859 static void iwl4965_post_associate(struct iwl_priv *priv)
3861 struct ieee80211_conf *conf = NULL;
3863 DECLARE_MAC_BUF(mac);
3865 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3866 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3870 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3872 print_mac(mac, priv->active_rxon.bssid_addr));
3875 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3879 if (!priv->vif || !priv->is_open)
3882 iwl4965_scan_cancel_timeout(priv, 200);
3884 conf = ieee80211_get_hw_conf(priv->hw);
3886 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3887 iwl4965_commit_rxon(priv);
3889 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3890 iwl4965_setup_rxon_timing(priv);
3891 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3892 sizeof(priv->rxon_timing), &priv->rxon_timing);
3894 IWL_WARNING("REPLY_RXON_TIMING failed - "
3895 "Attempting to continue.\n");
3897 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3899 #ifdef CONFIG_IWL4965_HT
3900 if (priv->current_ht_config.is_ht)
3901 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3902 #endif /* CONFIG_IWL4965_HT*/
3903 iwl_set_rxon_chain(priv);
3904 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3906 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3907 priv->assoc_id, priv->beacon_int);
3909 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3910 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3912 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3914 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3915 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3916 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3918 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3920 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3921 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3925 iwl4965_commit_rxon(priv);
3927 switch (priv->iw_mode) {
3928 case IEEE80211_IF_TYPE_STA:
3929 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3932 case IEEE80211_IF_TYPE_IBSS:
3934 /* clear out the station table */
3935 iwlcore_clear_stations_table(priv);
3937 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3938 iwl_rxon_add_station(priv, priv->bssid, 0);
3939 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3940 iwl4965_send_beacon_cmd(priv);
3945 IWL_ERROR("%s Should not be called in %d mode\n",
3946 __FUNCTION__, priv->iw_mode);
3950 iwl4965_sequence_reset(priv);
3952 /* Enable Rx differential gain and sensitivity calibrations */
3953 iwl_chain_noise_reset(priv);
3954 priv->start_calib = 1;
3956 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3957 priv->assoc_station_added = 1;
3959 iwl4965_activate_qos(priv, 0);
3961 iwl_power_update_mode(priv, 0);
3962 /* we have just associated, don't start scan too early */
3963 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3967 static void iwl4965_bg_post_associate(struct work_struct *data)
3969 struct iwl_priv *priv = container_of(data, struct iwl_priv,
3970 post_associate.work);
3972 mutex_lock(&priv->mutex);
3973 iwl4965_post_associate(priv);
3974 mutex_unlock(&priv->mutex);
3978 static void iwl4965_bg_abort_scan(struct work_struct *work)
3980 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3982 if (!iwl_is_ready(priv))
3985 mutex_lock(&priv->mutex);
3987 set_bit(STATUS_SCAN_ABORTING, &priv->status);
3988 iwl4965_send_scan_abort(priv);
3990 mutex_unlock(&priv->mutex);
3993 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3995 static void iwl4965_bg_scan_completed(struct work_struct *work)
3997 struct iwl_priv *priv =
3998 container_of(work, struct iwl_priv, scan_completed);
4000 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4002 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4005 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4006 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4008 ieee80211_scan_completed(priv->hw);
4010 /* Since setting the TXPOWER may have been deferred while
4011 * performing the scan, fire one off */
4012 mutex_lock(&priv->mutex);
4013 iwl4965_hw_reg_send_txpower(priv);
4014 mutex_unlock(&priv->mutex);
4017 /*****************************************************************************
4019 * mac80211 entry point functions
4021 *****************************************************************************/
4023 #define UCODE_READY_TIMEOUT (2 * HZ)
4025 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4027 struct iwl_priv *priv = hw->priv;
4030 IWL_DEBUG_MAC80211("enter\n");
4032 if (pci_enable_device(priv->pci_dev)) {
4033 IWL_ERROR("Fail to pci_enable_device\n");
4036 pci_restore_state(priv->pci_dev);
4037 pci_enable_msi(priv->pci_dev);
4039 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4042 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4043 goto out_disable_msi;
4046 /* we should be verifying the device is ready to be opened */
4047 mutex_lock(&priv->mutex);
4049 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4050 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4051 * ucode filename and max sizes are card-specific. */
4053 if (!priv->ucode_code.len) {
4054 ret = iwl4965_read_ucode(priv);
4056 IWL_ERROR("Could not read microcode: %d\n", ret);
4057 mutex_unlock(&priv->mutex);
4058 goto out_release_irq;
4062 ret = __iwl4965_up(priv);
4064 mutex_unlock(&priv->mutex);
4067 goto out_release_irq;
4069 IWL_DEBUG_INFO("Start UP work done.\n");
4071 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4074 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4075 * mac80211 will not be run successfully. */
4076 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4077 test_bit(STATUS_READY, &priv->status),
4078 UCODE_READY_TIMEOUT);
4080 if (!test_bit(STATUS_READY, &priv->status)) {
4081 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4082 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4084 goto out_release_irq;
4089 IWL_DEBUG_MAC80211("leave\n");
4093 free_irq(priv->pci_dev->irq, priv);
4095 pci_disable_msi(priv->pci_dev);
4096 pci_disable_device(priv->pci_dev);
4098 IWL_DEBUG_MAC80211("leave - failed\n");
4102 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4104 struct iwl_priv *priv = hw->priv;
4106 IWL_DEBUG_MAC80211("enter\n");
4108 if (!priv->is_open) {
4109 IWL_DEBUG_MAC80211("leave - skip\n");
4115 if (iwl_is_ready_rf(priv)) {
4116 /* stop mac, cancel any scan request and clear
4117 * RXON_FILTER_ASSOC_MSK BIT
4119 mutex_lock(&priv->mutex);
4120 iwl4965_scan_cancel_timeout(priv, 100);
4121 cancel_delayed_work(&priv->post_associate);
4122 mutex_unlock(&priv->mutex);
4127 flush_workqueue(priv->workqueue);
4128 free_irq(priv->pci_dev->irq, priv);
4129 pci_disable_msi(priv->pci_dev);
4130 pci_save_state(priv->pci_dev);
4131 pci_disable_device(priv->pci_dev);
4133 IWL_DEBUG_MAC80211("leave\n");
4136 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4138 struct iwl_priv *priv = hw->priv;
4140 IWL_DEBUG_MAC80211("enter\n");
4142 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4143 IWL_DEBUG_MAC80211("leave - monitor\n");
4147 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4148 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4150 if (iwl_tx_skb(priv, skb))
4151 dev_kfree_skb_any(skb);
4153 IWL_DEBUG_MAC80211("leave\n");
4157 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4158 struct ieee80211_if_init_conf *conf)
4160 struct iwl_priv *priv = hw->priv;
4161 unsigned long flags;
4162 DECLARE_MAC_BUF(mac);
4164 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4167 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4171 spin_lock_irqsave(&priv->lock, flags);
4172 priv->vif = conf->vif;
4174 spin_unlock_irqrestore(&priv->lock, flags);
4176 mutex_lock(&priv->mutex);
4178 if (conf->mac_addr) {
4179 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4180 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4183 if (iwl_is_ready(priv))
4184 iwl4965_set_mode(priv, conf->type);
4186 mutex_unlock(&priv->mutex);
4188 IWL_DEBUG_MAC80211("leave\n");
4193 * iwl4965_mac_config - mac80211 config callback
4195 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4196 * be set inappropriately and the driver currently sets the hardware up to
4197 * use it whenever needed.
4199 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4201 struct iwl_priv *priv = hw->priv;
4202 const struct iwl_channel_info *ch_info;
4203 unsigned long flags;
4206 mutex_lock(&priv->mutex);
4207 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4209 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4211 if (!iwl_is_ready(priv)) {
4212 IWL_DEBUG_MAC80211("leave - not ready\n");
4217 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4218 test_bit(STATUS_SCANNING, &priv->status))) {
4219 IWL_DEBUG_MAC80211("leave - scanning\n");
4220 set_bit(STATUS_CONF_PENDING, &priv->status);
4221 mutex_unlock(&priv->mutex);
4225 spin_lock_irqsave(&priv->lock, flags);
4227 ch_info = iwl_get_channel_info(priv, conf->channel->band,
4228 ieee80211_frequency_to_channel(conf->channel->center_freq));
4229 if (!is_channel_valid(ch_info)) {
4230 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4231 spin_unlock_irqrestore(&priv->lock, flags);
4236 #ifdef CONFIG_IWL4965_HT
4237 /* if we are switching from ht to 2.4 clear flags
4238 * from any ht related info since 2.4 does not
4240 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4241 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4242 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4245 priv->staging_rxon.flags = 0;
4246 #endif /* CONFIG_IWL4965_HT */
4248 iwl_set_rxon_channel(priv, conf->channel->band,
4249 ieee80211_frequency_to_channel(conf->channel->center_freq));
4251 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4253 /* The list of supported rates and rate mask can be different
4254 * for each band; since the band may have changed, reset
4255 * the rate mask to what mac80211 lists */
4256 iwl4965_set_rate(priv);
4258 spin_unlock_irqrestore(&priv->lock, flags);
4260 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4261 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4262 iwl4965_hw_channel_switch(priv, conf->channel);
4267 if (priv->cfg->ops->lib->radio_kill_sw)
4268 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4270 if (!conf->radio_enabled) {
4271 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4275 if (iwl_is_rfkill(priv)) {
4276 IWL_DEBUG_MAC80211("leave - RF kill\n");
4281 iwl4965_set_rate(priv);
4283 if (memcmp(&priv->active_rxon,
4284 &priv->staging_rxon, sizeof(priv->staging_rxon)))
4285 iwl4965_commit_rxon(priv);
4287 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4289 IWL_DEBUG_MAC80211("leave\n");
4292 clear_bit(STATUS_CONF_PENDING, &priv->status);
4293 mutex_unlock(&priv->mutex);
4297 static void iwl4965_config_ap(struct iwl_priv *priv)
4301 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4304 /* The following should be done only at AP bring up */
4305 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4307 /* RXON - unassoc (to set timing command) */
4308 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4309 iwl4965_commit_rxon(priv);
4312 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4313 iwl4965_setup_rxon_timing(priv);
4314 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4315 sizeof(priv->rxon_timing), &priv->rxon_timing);
4317 IWL_WARNING("REPLY_RXON_TIMING failed - "
4318 "Attempting to continue.\n");
4320 iwl_set_rxon_chain(priv);
4322 /* FIXME: what should be the assoc_id for AP? */
4323 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4324 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4325 priv->staging_rxon.flags |=
4326 RXON_FLG_SHORT_PREAMBLE_MSK;
4328 priv->staging_rxon.flags &=
4329 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4331 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4332 if (priv->assoc_capability &
4333 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4334 priv->staging_rxon.flags |=
4335 RXON_FLG_SHORT_SLOT_MSK;
4337 priv->staging_rxon.flags &=
4338 ~RXON_FLG_SHORT_SLOT_MSK;
4340 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4341 priv->staging_rxon.flags &=
4342 ~RXON_FLG_SHORT_SLOT_MSK;
4344 /* restore RXON assoc */
4345 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4346 iwl4965_commit_rxon(priv);
4347 iwl4965_activate_qos(priv, 1);
4348 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4350 iwl4965_send_beacon_cmd(priv);
4352 /* FIXME - we need to add code here to detect a totally new
4353 * configuration, reset the AP, unassoc, rxon timing, assoc,
4354 * clear sta table, add BCAST sta... */
4357 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4358 struct ieee80211_vif *vif,
4359 struct ieee80211_if_conf *conf)
4361 struct iwl_priv *priv = hw->priv;
4362 DECLARE_MAC_BUF(mac);
4363 unsigned long flags;
4369 if (priv->vif != vif) {
4370 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4374 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4375 (!conf->beacon || !conf->ssid_len)) {
4377 ("Leaving in AP mode because HostAPD is not ready.\n");
4381 if (!iwl_is_alive(priv))
4384 mutex_lock(&priv->mutex);
4387 IWL_DEBUG_MAC80211("bssid: %s\n",
4388 print_mac(mac, conf->bssid));
4391 * very dubious code was here; the probe filtering flag is never set:
4393 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4394 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4397 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4399 conf->bssid = priv->mac_addr;
4400 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4401 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4402 print_mac(mac, conf->bssid));
4404 if (priv->ibss_beacon)
4405 dev_kfree_skb(priv->ibss_beacon);
4407 priv->ibss_beacon = conf->beacon;
4410 if (iwl_is_rfkill(priv))
4413 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4414 !is_multicast_ether_addr(conf->bssid)) {
4415 /* If there is currently a HW scan going on in the background
4416 * then we need to cancel it else the RXON below will fail. */
4417 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4418 IWL_WARNING("Aborted scan still in progress "
4420 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4421 mutex_unlock(&priv->mutex);
4424 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4426 /* TODO: Audit driver for usage of these members and see
4427 * if mac80211 deprecates them (priv->bssid looks like it
4428 * shouldn't be there, but I haven't scanned the IBSS code
4429 * to verify) - jpk */
4430 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4432 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4433 iwl4965_config_ap(priv);
4435 rc = iwl4965_commit_rxon(priv);
4436 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4437 iwl_rxon_add_station(
4438 priv, priv->active_rxon.bssid_addr, 1);
4442 iwl4965_scan_cancel_timeout(priv, 100);
4443 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4444 iwl4965_commit_rxon(priv);
4448 spin_lock_irqsave(&priv->lock, flags);
4449 if (!conf->ssid_len)
4450 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4452 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4454 priv->essid_len = conf->ssid_len;
4455 spin_unlock_irqrestore(&priv->lock, flags);
4457 IWL_DEBUG_MAC80211("leave\n");
4458 mutex_unlock(&priv->mutex);
4463 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4464 unsigned int changed_flags,
4465 unsigned int *total_flags,
4466 int mc_count, struct dev_addr_list *mc_list)
4470 * see also iwl4965_connection_init_rx_config
4472 struct iwl_priv *priv = hw->priv;
4474 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4475 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4476 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4477 IEEE80211_IF_TYPE_MNTR,
4478 changed_flags, *total_flags);
4479 /* queue work 'cuz mac80211 is holding a lock which
4480 * prevents us from issuing (synchronous) f/w cmds */
4481 queue_work(priv->workqueue, &priv->set_monitor);
4482 new_flags &= FIF_PROMISC_IN_BSS |
4487 *total_flags = new_flags;
4490 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4491 struct ieee80211_if_init_conf *conf)
4493 struct iwl_priv *priv = hw->priv;
4495 IWL_DEBUG_MAC80211("enter\n");
4497 mutex_lock(&priv->mutex);
4499 if (iwl_is_ready_rf(priv)) {
4500 iwl4965_scan_cancel_timeout(priv, 100);
4501 cancel_delayed_work(&priv->post_associate);
4502 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4503 iwl4965_commit_rxon(priv);
4505 if (priv->vif == conf->vif) {
4507 memset(priv->bssid, 0, ETH_ALEN);
4508 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4509 priv->essid_len = 0;
4511 mutex_unlock(&priv->mutex);
4513 IWL_DEBUG_MAC80211("leave\n");
4517 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4518 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4519 struct ieee80211_vif *vif,
4520 struct ieee80211_bss_conf *bss_conf,
4523 struct iwl_priv *priv = hw->priv;
4525 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4527 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4528 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4529 bss_conf->use_short_preamble);
4530 if (bss_conf->use_short_preamble)
4531 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4533 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4536 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4537 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4538 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4539 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4541 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4544 if (changes & BSS_CHANGED_HT) {
4545 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4546 iwl4965_ht_conf(priv, bss_conf);
4547 iwl_set_rxon_chain(priv);
4550 if (changes & BSS_CHANGED_ASSOC) {
4551 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4552 /* This should never happen as this function should
4553 * never be called from interrupt context. */
4554 if (WARN_ON_ONCE(in_interrupt()))
4556 if (bss_conf->assoc) {
4557 priv->assoc_id = bss_conf->aid;
4558 priv->beacon_int = bss_conf->beacon_int;
4559 priv->timestamp = bss_conf->timestamp;
4560 priv->assoc_capability = bss_conf->assoc_capability;
4561 priv->next_scan_jiffies = jiffies +
4562 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4563 mutex_lock(&priv->mutex);
4564 iwl4965_post_associate(priv);
4565 mutex_unlock(&priv->mutex);
4568 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4570 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4571 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4572 iwl_send_rxon_assoc(priv);
4577 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4580 unsigned long flags;
4581 struct iwl_priv *priv = hw->priv;
4583 IWL_DEBUG_MAC80211("enter\n");
4585 mutex_lock(&priv->mutex);
4586 spin_lock_irqsave(&priv->lock, flags);
4588 if (!iwl_is_ready_rf(priv)) {
4590 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4594 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4596 IWL_ERROR("ERROR: APs don't scan\n");
4600 /* we don't schedule scan within next_scan_jiffies period */
4601 if (priv->next_scan_jiffies &&
4602 time_after(priv->next_scan_jiffies, jiffies)) {
4606 /* if we just finished scan ask for delay */
4607 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4608 IWL_DELAY_NEXT_SCAN, jiffies)) {
4613 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4614 iwl4965_escape_essid(ssid, len), (int)len);
4616 priv->one_direct_scan = 1;
4617 priv->direct_ssid_len = (u8)
4618 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4619 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4621 priv->one_direct_scan = 0;
4623 rc = iwl4965_scan_initiate(priv);
4625 IWL_DEBUG_MAC80211("leave\n");
4628 spin_unlock_irqrestore(&priv->lock, flags);
4629 mutex_unlock(&priv->mutex);
4634 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4635 struct ieee80211_key_conf *keyconf, const u8 *addr,
4636 u32 iv32, u16 *phase1key)
4638 struct iwl_priv *priv = hw->priv;
4639 u8 sta_id = IWL_INVALID_STATION;
4640 unsigned long flags;
4641 __le16 key_flags = 0;
4643 DECLARE_MAC_BUF(mac);
4645 IWL_DEBUG_MAC80211("enter\n");
4647 sta_id = iwl_find_station(priv, addr);
4648 if (sta_id == IWL_INVALID_STATION) {
4649 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4650 print_mac(mac, addr));
4654 iwl4965_scan_cancel_timeout(priv, 100);
4656 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4657 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4658 key_flags &= ~STA_KEY_FLG_INVALID;
4660 if (sta_id == priv->hw_params.bcast_sta_id)
4661 key_flags |= STA_KEY_MULTICAST_MSK;
4663 spin_lock_irqsave(&priv->sta_lock, flags);
4665 priv->stations[sta_id].sta.key.key_flags = key_flags;
4666 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4668 for (i = 0; i < 5; i++)
4669 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4670 cpu_to_le16(phase1key[i]);
4672 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4673 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4675 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4677 spin_unlock_irqrestore(&priv->sta_lock, flags);
4679 IWL_DEBUG_MAC80211("leave\n");
4682 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4683 const u8 *local_addr, const u8 *addr,
4684 struct ieee80211_key_conf *key)
4686 struct iwl_priv *priv = hw->priv;
4687 DECLARE_MAC_BUF(mac);
4689 u8 sta_id = IWL_INVALID_STATION;
4690 u8 is_default_wep_key = 0;
4692 IWL_DEBUG_MAC80211("enter\n");
4694 if (priv->hw_params.sw_crypto) {
4695 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4699 if (is_zero_ether_addr(addr))
4700 /* only support pairwise keys */
4703 sta_id = iwl_find_station(priv, addr);
4704 if (sta_id == IWL_INVALID_STATION) {
4705 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4706 print_mac(mac, addr));
4711 mutex_lock(&priv->mutex);
4712 iwl4965_scan_cancel_timeout(priv, 100);
4713 mutex_unlock(&priv->mutex);
4715 /* If we are getting WEP group key and we didn't receive any key mapping
4716 * so far, we are in legacy wep mode (group key only), otherwise we are
4718 * In legacy wep mode, we use another host command to the uCode */
4719 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4720 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4722 is_default_wep_key = !priv->key_mapping_key;
4724 is_default_wep_key =
4725 (key->hw_key_idx == HW_KEY_DEFAULT);
4730 if (is_default_wep_key)
4731 ret = iwl_set_default_wep_key(priv, key);
4733 ret = iwl_set_dynamic_key(priv, key, sta_id);
4735 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4738 if (is_default_wep_key)
4739 ret = iwl_remove_default_wep_key(priv, key);
4741 ret = iwl_remove_dynamic_key(priv, key, sta_id);
4743 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4749 IWL_DEBUG_MAC80211("leave\n");
4754 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4755 const struct ieee80211_tx_queue_params *params)
4757 struct iwl_priv *priv = hw->priv;
4758 unsigned long flags;
4761 IWL_DEBUG_MAC80211("enter\n");
4763 if (!iwl_is_ready_rf(priv)) {
4764 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4768 if (queue >= AC_NUM) {
4769 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4773 if (!priv->qos_data.qos_enable) {
4774 priv->qos_data.qos_active = 0;
4775 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4778 q = AC_NUM - 1 - queue;
4780 spin_lock_irqsave(&priv->lock, flags);
4782 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4783 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4784 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4785 priv->qos_data.def_qos_parm.ac[q].edca_txop =
4786 cpu_to_le16((params->txop * 32));
4788 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4789 priv->qos_data.qos_active = 1;
4791 spin_unlock_irqrestore(&priv->lock, flags);
4793 mutex_lock(&priv->mutex);
4794 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4795 iwl4965_activate_qos(priv, 1);
4796 else if (priv->assoc_id && iwl_is_associated(priv))
4797 iwl4965_activate_qos(priv, 0);
4799 mutex_unlock(&priv->mutex);
4801 IWL_DEBUG_MAC80211("leave\n");
4805 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4806 struct ieee80211_tx_queue_stats *stats)
4808 struct iwl_priv *priv = hw->priv;
4810 struct iwl_tx_queue *txq;
4811 struct iwl_queue *q;
4812 unsigned long flags;
4814 IWL_DEBUG_MAC80211("enter\n");
4816 if (!iwl_is_ready_rf(priv)) {
4817 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4821 spin_lock_irqsave(&priv->lock, flags);
4823 for (i = 0; i < AC_NUM; i++) {
4824 txq = &priv->txq[i];
4826 avail = iwl_queue_space(q);
4828 stats[i].len = q->n_window - avail;
4829 stats[i].limit = q->n_window - q->high_mark;
4830 stats[i].count = q->n_window;
4833 spin_unlock_irqrestore(&priv->lock, flags);
4835 IWL_DEBUG_MAC80211("leave\n");
4840 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4841 struct ieee80211_low_level_stats *stats)
4843 struct iwl_priv *priv = hw->priv;
4846 IWL_DEBUG_MAC80211("enter\n");
4847 IWL_DEBUG_MAC80211("leave\n");
4852 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4854 struct iwl_priv *priv;
4857 IWL_DEBUG_MAC80211("enter\n");
4858 IWL_DEBUG_MAC80211("leave\n");
4863 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4865 struct iwl_priv *priv = hw->priv;
4866 unsigned long flags;
4868 mutex_lock(&priv->mutex);
4869 IWL_DEBUG_MAC80211("enter\n");
4871 priv->lq_mngr.lq_ready = 0;
4872 #ifdef CONFIG_IWL4965_HT
4873 spin_lock_irqsave(&priv->lock, flags);
4874 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4875 spin_unlock_irqrestore(&priv->lock, flags);
4876 #endif /* CONFIG_IWL4965_HT */
4878 iwl_reset_qos(priv);
4880 cancel_delayed_work(&priv->post_associate);
4882 spin_lock_irqsave(&priv->lock, flags);
4884 priv->assoc_capability = 0;
4885 priv->assoc_station_added = 0;
4887 /* new association get rid of ibss beacon skb */
4888 if (priv->ibss_beacon)
4889 dev_kfree_skb(priv->ibss_beacon);
4891 priv->ibss_beacon = NULL;
4893 priv->beacon_int = priv->hw->conf.beacon_int;
4894 priv->timestamp = 0;
4895 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4896 priv->beacon_int = 0;
4898 spin_unlock_irqrestore(&priv->lock, flags);
4900 if (!iwl_is_ready_rf(priv)) {
4901 IWL_DEBUG_MAC80211("leave - not ready\n");
4902 mutex_unlock(&priv->mutex);
4906 /* we are restarting association process
4907 * clear RXON_FILTER_ASSOC_MSK bit
4909 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4910 iwl4965_scan_cancel_timeout(priv, 100);
4911 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4912 iwl4965_commit_rxon(priv);
4915 iwl_power_update_mode(priv, 0);
4917 /* Per mac80211.h: This is only used in IBSS mode... */
4918 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4920 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4921 mutex_unlock(&priv->mutex);
4925 iwl4965_set_rate(priv);
4927 mutex_unlock(&priv->mutex);
4929 IWL_DEBUG_MAC80211("leave\n");
4932 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4934 struct iwl_priv *priv = hw->priv;
4935 unsigned long flags;
4937 mutex_lock(&priv->mutex);
4938 IWL_DEBUG_MAC80211("enter\n");
4940 if (!iwl_is_ready_rf(priv)) {
4941 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4942 mutex_unlock(&priv->mutex);
4946 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4947 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4948 mutex_unlock(&priv->mutex);
4952 spin_lock_irqsave(&priv->lock, flags);
4954 if (priv->ibss_beacon)
4955 dev_kfree_skb(priv->ibss_beacon);
4957 priv->ibss_beacon = skb;
4961 IWL_DEBUG_MAC80211("leave\n");
4962 spin_unlock_irqrestore(&priv->lock, flags);
4964 iwl_reset_qos(priv);
4966 queue_work(priv->workqueue, &priv->post_associate.work);
4968 mutex_unlock(&priv->mutex);
4973 /*****************************************************************************
4977 *****************************************************************************/
4979 #ifdef CONFIG_IWLWIFI_DEBUG
4982 * The following adds a new attribute to the sysfs representation
4983 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4984 * used for controlling the debug level.
4986 * See the level definitions in iwl for details.
4989 static ssize_t show_debug_level(struct device *d,
4990 struct device_attribute *attr, char *buf)
4992 struct iwl_priv *priv = d->driver_data;
4994 return sprintf(buf, "0x%08X\n", priv->debug_level);
4996 static ssize_t store_debug_level(struct device *d,
4997 struct device_attribute *attr,
4998 const char *buf, size_t count)
5000 struct iwl_priv *priv = d->driver_data;
5001 char *p = (char *)buf;
5004 val = simple_strtoul(p, &p, 0);
5006 printk(KERN_INFO DRV_NAME
5007 ": %s is not in hex or decimal form.\n", buf);
5009 priv->debug_level = val;
5011 return strnlen(buf, count);
5014 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5015 show_debug_level, store_debug_level);
5018 #endif /* CONFIG_IWLWIFI_DEBUG */
5021 static ssize_t show_version(struct device *d,
5022 struct device_attribute *attr, char *buf)
5024 struct iwl_priv *priv = d->driver_data;
5025 struct iwl_alive_resp *palive = &priv->card_alive;
5027 if (palive->is_valid)
5028 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5029 "fw type: 0x%01X 0x%01X\n",
5030 palive->ucode_major, palive->ucode_minor,
5031 palive->sw_rev[0], palive->sw_rev[1],
5032 palive->ver_type, palive->ver_subtype);
5035 return sprintf(buf, "fw not loaded\n");
5038 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5040 static ssize_t show_temperature(struct device *d,
5041 struct device_attribute *attr, char *buf)
5043 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5045 if (!iwl_is_alive(priv))
5048 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5051 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5053 static ssize_t show_rs_window(struct device *d,
5054 struct device_attribute *attr,
5057 struct iwl_priv *priv = d->driver_data;
5058 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5060 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5062 static ssize_t show_tx_power(struct device *d,
5063 struct device_attribute *attr, char *buf)
5065 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5066 return sprintf(buf, "%d\n", priv->user_txpower_limit);
5069 static ssize_t store_tx_power(struct device *d,
5070 struct device_attribute *attr,
5071 const char *buf, size_t count)
5073 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5074 char *p = (char *)buf;
5077 val = simple_strtoul(p, &p, 10);
5079 printk(KERN_INFO DRV_NAME
5080 ": %s is not in decimal form.\n", buf);
5082 iwl4965_hw_reg_set_txpower(priv, val);
5087 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5089 static ssize_t show_flags(struct device *d,
5090 struct device_attribute *attr, char *buf)
5092 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5094 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5097 static ssize_t store_flags(struct device *d,
5098 struct device_attribute *attr,
5099 const char *buf, size_t count)
5101 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5102 u32 flags = simple_strtoul(buf, NULL, 0);
5104 mutex_lock(&priv->mutex);
5105 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5106 /* Cancel any currently running scans... */
5107 if (iwl4965_scan_cancel_timeout(priv, 100))
5108 IWL_WARNING("Could not cancel scan.\n");
5110 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5112 priv->staging_rxon.flags = cpu_to_le32(flags);
5113 iwl4965_commit_rxon(priv);
5116 mutex_unlock(&priv->mutex);
5121 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5123 static ssize_t show_filter_flags(struct device *d,
5124 struct device_attribute *attr, char *buf)
5126 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5128 return sprintf(buf, "0x%04X\n",
5129 le32_to_cpu(priv->active_rxon.filter_flags));
5132 static ssize_t store_filter_flags(struct device *d,
5133 struct device_attribute *attr,
5134 const char *buf, size_t count)
5136 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5137 u32 filter_flags = simple_strtoul(buf, NULL, 0);
5139 mutex_lock(&priv->mutex);
5140 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5141 /* Cancel any currently running scans... */
5142 if (iwl4965_scan_cancel_timeout(priv, 100))
5143 IWL_WARNING("Could not cancel scan.\n");
5145 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5146 "0x%04X\n", filter_flags);
5147 priv->staging_rxon.filter_flags =
5148 cpu_to_le32(filter_flags);
5149 iwl4965_commit_rxon(priv);
5152 mutex_unlock(&priv->mutex);
5157 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5158 store_filter_flags);
5160 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5162 static ssize_t show_measurement(struct device *d,
5163 struct device_attribute *attr, char *buf)
5165 struct iwl_priv *priv = dev_get_drvdata(d);
5166 struct iwl4965_spectrum_notification measure_report;
5167 u32 size = sizeof(measure_report), len = 0, ofs = 0;
5168 u8 *data = (u8 *) & measure_report;
5169 unsigned long flags;
5171 spin_lock_irqsave(&priv->lock, flags);
5172 if (!(priv->measurement_status & MEASUREMENT_READY)) {
5173 spin_unlock_irqrestore(&priv->lock, flags);
5176 memcpy(&measure_report, &priv->measure_report, size);
5177 priv->measurement_status = 0;
5178 spin_unlock_irqrestore(&priv->lock, flags);
5180 while (size && (PAGE_SIZE - len)) {
5181 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5182 PAGE_SIZE - len, 1);
5184 if (PAGE_SIZE - len)
5188 size -= min(size, 16U);
5194 static ssize_t store_measurement(struct device *d,
5195 struct device_attribute *attr,
5196 const char *buf, size_t count)
5198 struct iwl_priv *priv = dev_get_drvdata(d);
5199 struct ieee80211_measurement_params params = {
5200 .channel = le16_to_cpu(priv->active_rxon.channel),
5201 .start_time = cpu_to_le64(priv->last_tsf),
5202 .duration = cpu_to_le16(1),
5204 u8 type = IWL_MEASURE_BASIC;
5210 strncpy(buffer, buf, min(sizeof(buffer), count));
5211 channel = simple_strtoul(p, NULL, 0);
5213 params.channel = channel;
5216 while (*p && *p != ' ')
5219 type = simple_strtoul(p + 1, NULL, 0);
5222 IWL_DEBUG_INFO("Invoking measurement of type %d on "
5223 "channel %d (for '%s')\n", type, params.channel, buf);
5224 iwl4965_get_measurement(priv, ¶ms, type);
5229 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5230 show_measurement, store_measurement);
5231 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5233 static ssize_t store_retry_rate(struct device *d,
5234 struct device_attribute *attr,
5235 const char *buf, size_t count)
5237 struct iwl_priv *priv = dev_get_drvdata(d);
5239 priv->retry_rate = simple_strtoul(buf, NULL, 0);
5240 if (priv->retry_rate <= 0)
5241 priv->retry_rate = 1;
5246 static ssize_t show_retry_rate(struct device *d,
5247 struct device_attribute *attr, char *buf)
5249 struct iwl_priv *priv = dev_get_drvdata(d);
5250 return sprintf(buf, "%d", priv->retry_rate);
5253 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5256 static ssize_t store_power_level(struct device *d,
5257 struct device_attribute *attr,
5258 const char *buf, size_t count)
5260 struct iwl_priv *priv = dev_get_drvdata(d);
5264 mode = simple_strtoul(buf, NULL, 0);
5265 mutex_lock(&priv->mutex);
5267 if (!iwl_is_ready(priv)) {
5272 rc = iwl_power_set_user_mode(priv, mode);
5274 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5280 mutex_unlock(&priv->mutex);
5284 #define MAX_WX_STRING 80
5286 /* Values are in microsecond */
5287 static const s32 timeout_duration[] = {
5294 static const s32 period_duration[] = {
5302 static ssize_t show_power_level(struct device *d,
5303 struct device_attribute *attr, char *buf)
5305 struct iwl_priv *priv = dev_get_drvdata(d);
5306 int level = priv->power_data.power_mode;
5309 p += sprintf(p, "%d ", level);
5311 case IWL_POWER_MODE_CAM:
5313 p += sprintf(p, "(AC)");
5315 case IWL_POWER_BATTERY:
5316 p += sprintf(p, "(BATTERY)");
5320 "(Timeout %dms, Period %dms)",
5321 timeout_duration[level - 1] / 1000,
5322 period_duration[level - 1] / 1000);
5325 if (!(priv->power_mode & IWL_POWER_ENABLED))
5326 p += sprintf(p, " OFF\n");
5328 p += sprintf(p, " \n");
5330 p += sprintf(p, " \n");
5331 return (p - buf + 1);
5334 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5337 static ssize_t show_channels(struct device *d,
5338 struct device_attribute *attr, char *buf)
5340 /* all this shit doesn't belong into sysfs anyway */
5344 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5346 static ssize_t show_statistics(struct device *d,
5347 struct device_attribute *attr, char *buf)
5349 struct iwl_priv *priv = dev_get_drvdata(d);
5350 u32 size = sizeof(struct iwl4965_notif_statistics);
5351 u32 len = 0, ofs = 0;
5352 u8 *data = (u8 *) & priv->statistics;
5355 if (!iwl_is_alive(priv))
5358 mutex_lock(&priv->mutex);
5359 rc = iwl_send_statistics_request(priv, 0);
5360 mutex_unlock(&priv->mutex);
5364 "Error sending statistics request: 0x%08X\n", rc);
5368 while (size && (PAGE_SIZE - len)) {
5369 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5370 PAGE_SIZE - len, 1);
5372 if (PAGE_SIZE - len)
5376 size -= min(size, 16U);
5382 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5384 static ssize_t show_status(struct device *d,
5385 struct device_attribute *attr, char *buf)
5387 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5388 if (!iwl_is_alive(priv))
5390 return sprintf(buf, "0x%08x\n", (int)priv->status);
5393 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5395 /*****************************************************************************
5397 * driver setup and teardown
5399 *****************************************************************************/
5401 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5403 priv->workqueue = create_workqueue(DRV_NAME);
5405 init_waitqueue_head(&priv->wait_command_queue);
5407 INIT_WORK(&priv->up, iwl4965_bg_up);
5408 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5409 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5410 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5411 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5412 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5413 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5414 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5415 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5416 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5417 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5418 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5419 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5421 iwl4965_hw_setup_deferred_work(priv);
5423 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5424 iwl4965_irq_tasklet, (unsigned long)priv);
5427 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5429 iwl4965_hw_cancel_deferred_work(priv);
5431 cancel_delayed_work_sync(&priv->init_alive_start);
5432 cancel_delayed_work(&priv->scan_check);
5433 cancel_delayed_work(&priv->alive_start);
5434 cancel_delayed_work(&priv->post_associate);
5435 cancel_work_sync(&priv->beacon_update);
5438 static struct attribute *iwl4965_sysfs_entries[] = {
5439 &dev_attr_channels.attr,
5440 &dev_attr_flags.attr,
5441 &dev_attr_filter_flags.attr,
5442 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5443 &dev_attr_measurement.attr,
5445 &dev_attr_power_level.attr,
5446 &dev_attr_retry_rate.attr,
5447 &dev_attr_rs_window.attr,
5448 &dev_attr_statistics.attr,
5449 &dev_attr_status.attr,
5450 &dev_attr_temperature.attr,
5451 &dev_attr_tx_power.attr,
5452 #ifdef CONFIG_IWLWIFI_DEBUG
5453 &dev_attr_debug_level.attr,
5455 &dev_attr_version.attr,
5460 static struct attribute_group iwl4965_attribute_group = {
5461 .name = NULL, /* put in device directory */
5462 .attrs = iwl4965_sysfs_entries,
5465 static struct ieee80211_ops iwl4965_hw_ops = {
5466 .tx = iwl4965_mac_tx,
5467 .start = iwl4965_mac_start,
5468 .stop = iwl4965_mac_stop,
5469 .add_interface = iwl4965_mac_add_interface,
5470 .remove_interface = iwl4965_mac_remove_interface,
5471 .config = iwl4965_mac_config,
5472 .config_interface = iwl4965_mac_config_interface,
5473 .configure_filter = iwl4965_configure_filter,
5474 .set_key = iwl4965_mac_set_key,
5475 .update_tkip_key = iwl4965_mac_update_tkip_key,
5476 .get_stats = iwl4965_mac_get_stats,
5477 .get_tx_stats = iwl4965_mac_get_tx_stats,
5478 .conf_tx = iwl4965_mac_conf_tx,
5479 .get_tsf = iwl4965_mac_get_tsf,
5480 .reset_tsf = iwl4965_mac_reset_tsf,
5481 .beacon_update = iwl4965_mac_beacon_update,
5482 .bss_info_changed = iwl4965_bss_info_changed,
5483 #ifdef CONFIG_IWL4965_HT
5484 .ampdu_action = iwl4965_mac_ampdu_action,
5485 #endif /* CONFIG_IWL4965_HT */
5486 .hw_scan = iwl4965_mac_hw_scan
5489 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5492 struct iwl_priv *priv;
5493 struct ieee80211_hw *hw;
5494 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5495 unsigned long flags;
5496 DECLARE_MAC_BUF(mac);
5498 /************************
5499 * 1. Allocating HW data
5500 ************************/
5502 /* Disabling hardware scan means that mac80211 will perform scans
5503 * "the hard way", rather than using device's scan. */
5504 if (cfg->mod_params->disable_hw_scan) {
5505 if (cfg->mod_params->debug & IWL_DL_INFO)
5506 dev_printk(KERN_DEBUG, &(pdev->dev),
5507 "Disabling hw_scan\n");
5508 iwl4965_hw_ops.hw_scan = NULL;
5511 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5517 /* At this point both hw and priv are allocated. */
5519 SET_IEEE80211_DEV(hw, &pdev->dev);
5521 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5523 priv->pci_dev = pdev;
5525 #ifdef CONFIG_IWLWIFI_DEBUG
5526 priv->debug_level = priv->cfg->mod_params->debug;
5527 atomic_set(&priv->restrict_refcnt, 0);
5530 /**************************
5531 * 2. Initializing PCI bus
5532 **************************/
5533 if (pci_enable_device(pdev)) {
5535 goto out_ieee80211_free_hw;
5538 pci_set_master(pdev);
5540 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5542 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5544 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5546 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5547 /* both attempts failed: */
5549 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5551 goto out_pci_disable_device;
5555 err = pci_request_regions(pdev, DRV_NAME);
5557 goto out_pci_disable_device;
5559 pci_set_drvdata(pdev, priv);
5561 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5562 * PCI Tx retries from interfering with C3 CPU state */
5563 pci_write_config_byte(pdev, 0x41, 0x00);
5565 /***********************
5566 * 3. Read REV register
5567 ***********************/
5568 priv->hw_base = pci_iomap(pdev, 0, 0);
5569 if (!priv->hw_base) {
5571 goto out_pci_release_regions;
5574 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5575 (unsigned long long) pci_resource_len(pdev, 0));
5576 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5578 iwl_hw_detect(priv);
5579 printk(KERN_INFO DRV_NAME
5580 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5581 priv->cfg->name, priv->hw_rev);
5584 err = priv->cfg->ops->lib->apm_ops.init(priv);
5586 IWL_DEBUG_INFO("Failed to init APMG\n");
5592 /* Read the EEPROM */
5593 err = iwl_eeprom_init(priv);
5595 IWL_ERROR("Unable to init EEPROM\n");
5598 err = iwl_eeprom_check_version(priv);
5602 /* extract MAC Address */
5603 iwl_eeprom_get_mac(priv, priv->mac_addr);
5604 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5605 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5607 /************************
5608 * 5. Setup HW constants
5609 ************************/
5610 /* Device-specific setup */
5611 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5612 IWL_ERROR("failed to set hw parameters\n");
5613 goto out_free_eeprom;
5616 /*******************
5618 *******************/
5620 err = iwl_init_drv(priv);
5622 goto out_free_eeprom;
5623 /* At this point both hw and priv are initialized. */
5625 /**********************************
5626 * 7. Initialize module parameters
5627 **********************************/
5629 /* Disable radio (SW RF KILL) via parameter when loading driver */
5630 if (priv->cfg->mod_params->disable) {
5631 set_bit(STATUS_RF_KILL_SW, &priv->status);
5632 IWL_DEBUG_INFO("Radio disabled.\n");
5635 /********************
5637 ********************/
5638 spin_lock_irqsave(&priv->lock, flags);
5639 iwl4965_disable_interrupts(priv);
5640 spin_unlock_irqrestore(&priv->lock, flags);
5642 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5644 IWL_ERROR("failed to create sysfs device attributes\n");
5645 goto out_uninit_drv;
5649 iwl4965_setup_deferred_work(priv);
5650 iwl4965_setup_rx_handlers(priv);
5652 /********************
5654 ********************/
5655 pci_save_state(pdev);
5656 pci_disable_device(pdev);
5658 /**********************************
5659 * 10. Setup and register mac80211
5660 **********************************/
5662 err = iwl_setup_mac(priv);
5664 goto out_remove_sysfs;
5666 err = iwl_dbgfs_register(priv, DRV_NAME);
5668 IWL_ERROR("failed to create debugfs files\n");
5670 /* notify iwlcore to init */
5671 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5675 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5677 iwl_uninit_drv(priv);
5679 iwl_eeprom_free(priv);
5681 pci_iounmap(pdev, priv->hw_base);
5682 out_pci_release_regions:
5683 pci_release_regions(pdev);
5684 pci_set_drvdata(pdev, NULL);
5685 out_pci_disable_device:
5686 pci_disable_device(pdev);
5687 out_ieee80211_free_hw:
5688 ieee80211_free_hw(priv->hw);
5693 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5695 struct iwl_priv *priv = pci_get_drvdata(pdev);
5696 struct list_head *p, *q;
5698 unsigned long flags;
5703 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5705 if (priv->mac80211_registered) {
5706 ieee80211_unregister_hw(priv->hw);
5707 priv->mac80211_registered = 0;
5710 set_bit(STATUS_EXIT_PENDING, &priv->status);
5714 /* make sure we flush any pending irq or
5715 * tasklet for the driver
5717 spin_lock_irqsave(&priv->lock, flags);
5718 iwl4965_disable_interrupts(priv);
5719 spin_unlock_irqrestore(&priv->lock, flags);
5721 iwl_synchronize_irq(priv);
5723 /* Free MAC hash list for ADHOC */
5724 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5725 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5727 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5731 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5732 iwl_dbgfs_unregister(priv);
5733 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5735 iwl4965_dealloc_ucode_pci(priv);
5738 iwl_rx_queue_free(priv, &priv->rxq);
5739 iwl_hw_txq_ctx_free(priv);
5741 iwlcore_clear_stations_table(priv);
5742 iwl_eeprom_free(priv);
5745 /*netif_stop_queue(dev); */
5746 flush_workqueue(priv->workqueue);
5748 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5749 * priv->workqueue... so we can't take down the workqueue
5751 destroy_workqueue(priv->workqueue);
5752 priv->workqueue = NULL;
5754 pci_iounmap(pdev, priv->hw_base);
5755 pci_release_regions(pdev);
5756 pci_disable_device(pdev);
5757 pci_set_drvdata(pdev, NULL);
5759 iwl_uninit_drv(priv);
5761 if (priv->ibss_beacon)
5762 dev_kfree_skb(priv->ibss_beacon);
5764 ieee80211_free_hw(priv->hw);
5769 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5771 struct iwl_priv *priv = pci_get_drvdata(pdev);
5773 if (priv->is_open) {
5774 set_bit(STATUS_IN_SUSPEND, &priv->status);
5775 iwl4965_mac_stop(priv->hw);
5779 pci_set_power_state(pdev, PCI_D3hot);
5784 static int iwl4965_pci_resume(struct pci_dev *pdev)
5786 struct iwl_priv *priv = pci_get_drvdata(pdev);
5788 pci_set_power_state(pdev, PCI_D0);
5791 iwl4965_mac_start(priv->hw);
5793 clear_bit(STATUS_IN_SUSPEND, &priv->status);
5797 #endif /* CONFIG_PM */
5799 /*****************************************************************************
5801 * driver and module entry point
5803 *****************************************************************************/
5805 /* Hardware specific file defines the PCI IDs table for that hardware module */
5806 static struct pci_device_id iwl_hw_card_ids[] = {
5807 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5808 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5809 #ifdef CONFIG_IWL5000
5810 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5811 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5812 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5813 #endif /* CONFIG_IWL5000 */
5816 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5818 static struct pci_driver iwl_driver = {
5820 .id_table = iwl_hw_card_ids,
5821 .probe = iwl4965_pci_probe,
5822 .remove = __devexit_p(iwl4965_pci_remove),
5824 .suspend = iwl4965_pci_suspend,
5825 .resume = iwl4965_pci_resume,
5829 static int __init iwl4965_init(void)
5833 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5834 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5836 ret = iwl4965_rate_control_register();
5838 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5842 ret = pci_register_driver(&iwl_driver);
5844 IWL_ERROR("Unable to initialize PCI module\n");
5845 goto error_register;
5851 iwl4965_rate_control_unregister();
5855 static void __exit iwl4965_exit(void)
5857 pci_unregister_driver(&iwl_driver);
5858 iwl4965_rate_control_unregister();
5861 module_exit(iwl4965_exit);
5862 module_init(iwl4965_init);