1 /******************************************************************************
5 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/etherdevice.h>
32 #include <linux/sched.h>
33 #include <linux/slab.h>
34 #include <linux/types.h>
35 #include <linux/lockdep.h>
36 #include <linux/init.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/skbuff.h>
41 #include <net/mac80211.h>
46 il_get_cmd_string(u8 cmd)
54 IL_CMD(C_RXON_TIMING);
62 IL_CMD(C_TX_LINK_QUALITY_CMD);
63 IL_CMD(C_CHANNEL_SWITCH);
64 IL_CMD(N_CHANNEL_SWITCH);
65 IL_CMD(C_SPECTRUM_MEASUREMENT);
66 IL_CMD(N_SPECTRUM_MEASUREMENT);
69 IL_CMD(N_PM_DEBUG_STATS);
73 IL_CMD(N_SCAN_RESULTS);
74 IL_CMD(N_SCAN_COMPLETE);
82 IL_CMD(N_MISSED_BEACONS);
83 IL_CMD(C_CT_KILL_CONFIG);
84 IL_CMD(C_SENSITIVITY);
85 IL_CMD(C_PHY_CALIBRATION);
89 IL_CMD(N_COMPRESSED_BA);
95 EXPORT_SYMBOL(il_get_cmd_string);
97 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
100 il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd,
101 struct il_rx_pkt *pkt)
103 if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
104 IL_ERR("Bad return from %s (0x%08X)\n",
105 il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
108 #ifdef CONFIG_IWLEGACY_DEBUG
109 switch (cmd->hdr.cmd) {
110 case C_TX_LINK_QUALITY_CMD:
112 D_HC_DUMP("back from %s (0x%08X)\n",
113 il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
116 D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd),
123 il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd)
127 BUG_ON(!(cmd->flags & CMD_ASYNC));
129 /* An asynchronous command can not expect an SKB to be set. */
130 BUG_ON(cmd->flags & CMD_WANT_SKB);
132 /* Assign a generic callback if one is not provided */
134 cmd->callback = il_generic_cmd_callback;
136 if (test_bit(S_EXIT_PENDING, &il->status))
139 ret = il_enqueue_hcmd(il, cmd);
141 IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n",
142 il_get_cmd_string(cmd->id), ret);
149 il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd)
154 lockdep_assert_held(&il->mutex);
156 BUG_ON(cmd->flags & CMD_ASYNC);
158 /* A synchronous command can not have a callback set. */
159 BUG_ON(cmd->callback);
161 D_INFO("Attempting to send sync command %s\n",
162 il_get_cmd_string(cmd->id));
164 set_bit(S_HCMD_ACTIVE, &il->status);
165 D_INFO("Setting HCMD_ACTIVE for command %s\n",
166 il_get_cmd_string(cmd->id));
168 cmd_idx = il_enqueue_hcmd(il, cmd);
171 IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n",
172 il_get_cmd_string(cmd->id), ret);
176 ret = wait_event_timeout(il->wait_command_queue,
177 !test_bit(S_HCMD_ACTIVE, &il->status),
178 HOST_COMPLETE_TIMEOUT);
180 if (test_bit(S_HCMD_ACTIVE, &il->status)) {
181 IL_ERR("Error sending %s: time out after %dms.\n",
182 il_get_cmd_string(cmd->id),
183 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
185 clear_bit(S_HCMD_ACTIVE, &il->status);
186 D_INFO("Clearing HCMD_ACTIVE for command %s\n",
187 il_get_cmd_string(cmd->id));
193 if (test_bit(S_RF_KILL_HW, &il->status)) {
194 IL_ERR("Command %s aborted: RF KILL Switch\n",
195 il_get_cmd_string(cmd->id));
199 if (test_bit(S_FW_ERROR, &il->status)) {
200 IL_ERR("Command %s failed: FW Error\n",
201 il_get_cmd_string(cmd->id));
205 if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) {
206 IL_ERR("Error: Response NULL in '%s'\n",
207 il_get_cmd_string(cmd->id));
216 if (cmd->flags & CMD_WANT_SKB) {
218 * Cancel the CMD_WANT_SKB flag for the cmd in the
219 * TX cmd queue. Otherwise in case the cmd comes
220 * in later, it will possibly set an invalid
221 * address (cmd->meta.source).
223 il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB;
226 if (cmd->reply_page) {
227 il_free_pages(il, cmd->reply_page);
233 EXPORT_SYMBOL(il_send_cmd_sync);
236 il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd)
238 if (cmd->flags & CMD_ASYNC)
239 return il_send_cmd_async(il, cmd);
241 return il_send_cmd_sync(il, cmd);
243 EXPORT_SYMBOL(il_send_cmd);
246 il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data)
248 struct il_host_cmd cmd = {
254 return il_send_cmd_sync(il, &cmd);
256 EXPORT_SYMBOL(il_send_cmd_pdu);
259 il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data,
260 void (*callback) (struct il_priv *il,
261 struct il_device_cmd *cmd,
262 struct il_rx_pkt *pkt))
264 struct il_host_cmd cmd = {
270 cmd.flags |= CMD_ASYNC;
271 cmd.callback = callback;
273 return il_send_cmd_async(il, &cmd);
275 EXPORT_SYMBOL(il_send_cmd_pdu_async);
277 /* default: IL_LED_BLINK(0) using blinking idx table */
279 module_param(led_mode, int, S_IRUGO);
280 MODULE_PARM_DESC(led_mode,
281 "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking");
283 /* Throughput OFF time(ms) ON time (ms)
296 static const struct ieee80211_tpt_blink il_blink[] = {
297 {.throughput = 0, .blink_time = 334},
298 {.throughput = 1 * 1024 - 1, .blink_time = 260},
299 {.throughput = 5 * 1024 - 1, .blink_time = 220},
300 {.throughput = 10 * 1024 - 1, .blink_time = 190},
301 {.throughput = 20 * 1024 - 1, .blink_time = 170},
302 {.throughput = 50 * 1024 - 1, .blink_time = 150},
303 {.throughput = 70 * 1024 - 1, .blink_time = 130},
304 {.throughput = 100 * 1024 - 1, .blink_time = 110},
305 {.throughput = 200 * 1024 - 1, .blink_time = 80},
306 {.throughput = 300 * 1024 - 1, .blink_time = 50},
310 * Adjust led blink rate to compensate on a MAC Clock difference on every HW
311 * Led blink rate analysis showed an average deviation of 0% on 3945,
313 * Need to compensate on the led on/off time per HW according to the deviation
314 * to achieve the desired led frequency
315 * The calculation is: (100-averageDeviation)/100 * blinkTime
316 * For code efficiency the calculation will be:
317 * compensation = (100 - averageDeviation) * 64 / 100
318 * NewBlinkTime = (compensation * BlinkTime) / 64
321 il_blink_compensation(struct il_priv *il, u8 time, u16 compensation)
324 IL_ERR("undefined blink compensation: "
325 "use pre-defined blinking time\n");
329 return (u8) ((time * compensation) >> 6);
332 /* Set led pattern command */
334 il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off)
336 struct il_led_cmd led_cmd = {
338 .interval = IL_DEF_LED_INTRVL
342 if (!test_bit(S_READY, &il->status))
345 if (il->blink_on == on && il->blink_off == off)
349 /* led is SOLID_ON */
353 D_LED("Led blink time compensation=%u\n",
354 il->cfg->base_params->led_compensation);
356 il_blink_compensation(il, on,
357 il->cfg->base_params->led_compensation);
359 il_blink_compensation(il, off,
360 il->cfg->base_params->led_compensation);
362 ret = il->cfg->ops->led->cmd(il, &led_cmd);
371 il_led_brightness_set(struct led_classdev *led_cdev,
372 enum led_brightness brightness)
374 struct il_priv *il = container_of(led_cdev, struct il_priv, led);
375 unsigned long on = 0;
380 il_led_cmd(il, on, 0);
384 il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on,
385 unsigned long *delay_off)
387 struct il_priv *il = container_of(led_cdev, struct il_priv, led);
389 return il_led_cmd(il, *delay_on, *delay_off);
393 il_leds_init(struct il_priv *il)
398 if (mode == IL_LED_DEFAULT)
399 mode = il->cfg->led_mode;
402 kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy));
403 il->led.brightness_set = il_led_brightness_set;
404 il->led.blink_set = il_led_blink_set;
405 il->led.max_brightness = 1;
412 il->led.default_trigger =
413 ieee80211_create_tpt_led_trigger(il->hw,
414 IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
416 ARRAY_SIZE(il_blink));
418 case IL_LED_RF_STATE:
419 il->led.default_trigger = ieee80211_get_radio_led_name(il->hw);
423 ret = led_classdev_register(&il->pci_dev->dev, &il->led);
429 il->led_registered = true;
431 EXPORT_SYMBOL(il_leds_init);
434 il_leds_exit(struct il_priv *il)
436 if (!il->led_registered)
439 led_classdev_unregister(&il->led);
442 EXPORT_SYMBOL(il_leds_exit);
444 /************************** EEPROM BANDS ****************************
446 * The il_eeprom_band definitions below provide the mapping from the
447 * EEPROM contents to the specific channel number supported for each
450 * For example, il_priv->eeprom.band_3_channels[4] from the band_3
451 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
452 * The specific geography and calibration information for that channel
453 * is contained in the eeprom map itself.
455 * During init, we copy the eeprom information and channel map
456 * information into il->channel_info_24/52 and il->channel_map_24/52
458 * channel_map_24/52 provides the idx in the channel_info array for a
459 * given channel. We have to have two separate maps as there is channel
460 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
463 * A value of 0xff stored in the channel_map indicates that the channel
464 * is not supported by the hardware at all.
466 * A value of 0xfe in the channel_map indicates that the channel is not
467 * valid for Tx with the current hardware. This means that
468 * while the system can tune and receive on a given channel, it may not
469 * be able to associate or transmit any frames on that
470 * channel. There is no corresponding channel information for that
473 *********************************************************************/
476 const u8 il_eeprom_band_1[14] = {
477 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
481 static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */
482 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
485 static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */
486 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
489 static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */
490 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
493 static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */
494 145, 149, 153, 157, 161, 165
497 static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */
501 static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */
502 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
505 /******************************************************************************
507 * EEPROM related functions
509 ******************************************************************************/
512 il_eeprom_verify_signature(struct il_priv *il)
514 u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
517 D_EEPROM("EEPROM signature=0x%08x\n", gp);
519 case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K:
520 case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K:
523 IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp);
531 il_eeprom_query_addr(const struct il_priv *il, size_t offset)
533 BUG_ON(offset >= il->cfg->base_params->eeprom_size);
534 return &il->eeprom[offset];
536 EXPORT_SYMBOL(il_eeprom_query_addr);
539 il_eeprom_query16(const struct il_priv *il, size_t offset)
543 return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8);
545 EXPORT_SYMBOL(il_eeprom_query16);
548 * il_eeprom_init - read EEPROM contents
550 * Load the EEPROM contents from adapter into il->eeprom
552 * NOTE: This routine uses the non-debug IO access functions.
555 il_eeprom_init(struct il_priv *il)
558 u32 gp = _il_rd(il, CSR_EEPROM_GP);
563 /* allocate eeprom */
564 sz = il->cfg->base_params->eeprom_size;
565 D_EEPROM("NVM size = %d\n", sz);
566 il->eeprom = kzalloc(sz, GFP_KERNEL);
571 e = (__le16 *) il->eeprom;
573 il->cfg->ops->lib->apm_ops.init(il);
575 ret = il_eeprom_verify_signature(il);
577 IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
582 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
583 ret = il->cfg->ops->lib->eeprom_ops.acquire_semaphore(il);
585 IL_ERR("Failed to acquire EEPROM semaphore.\n");
590 /* eeprom is an array of 16bit values */
591 for (addr = 0; addr < sz; addr += sizeof(u16)) {
594 _il_wr(il, CSR_EEPROM_REG,
595 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
598 _il_poll_bit(il, CSR_EEPROM_REG,
599 CSR_EEPROM_REG_READ_VALID_MSK,
600 CSR_EEPROM_REG_READ_VALID_MSK,
601 IL_EEPROM_ACCESS_TIMEOUT);
603 IL_ERR("Time out reading EEPROM[%d]\n", addr);
606 r = _il_rd(il, CSR_EEPROM_REG);
607 e[addr / 2] = cpu_to_le16(r >> 16);
610 D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM",
611 il_eeprom_query16(il, EEPROM_VERSION));
615 il->cfg->ops->lib->eeprom_ops.release_semaphore(il);
620 /* Reset chip to save power until we load uCode during "up". */
625 EXPORT_SYMBOL(il_eeprom_init);
628 il_eeprom_free(struct il_priv *il)
633 EXPORT_SYMBOL(il_eeprom_free);
636 il_init_band_reference(const struct il_priv *il, int eep_band,
637 int *eeprom_ch_count,
638 const struct il_eeprom_channel **eeprom_ch_info,
639 const u8 **eeprom_ch_idx)
642 il->cfg->ops->lib->eeprom_ops.regulatory_bands[eep_band - 1];
644 case 1: /* 2.4GHz band */
645 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1);
647 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
649 *eeprom_ch_idx = il_eeprom_band_1;
651 case 2: /* 4.9GHz band */
652 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2);
654 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
656 *eeprom_ch_idx = il_eeprom_band_2;
658 case 3: /* 5.2GHz band */
659 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3);
661 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
663 *eeprom_ch_idx = il_eeprom_band_3;
665 case 4: /* 5.5GHz band */
666 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4);
668 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
670 *eeprom_ch_idx = il_eeprom_band_4;
672 case 5: /* 5.7GHz band */
673 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5);
675 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
677 *eeprom_ch_idx = il_eeprom_band_5;
679 case 6: /* 2.4GHz ht40 channels */
680 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6);
682 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
684 *eeprom_ch_idx = il_eeprom_band_6;
686 case 7: /* 5 GHz ht40 channels */
687 *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7);
689 (struct il_eeprom_channel *)il_eeprom_query_addr(il,
691 *eeprom_ch_idx = il_eeprom_band_7;
698 #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
701 * il_mod_ht40_chan_info - Copy ht40 channel info into driver's il.
703 * Does not set up a command, or touch hardware.
706 il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel,
707 const struct il_eeprom_channel *eeprom_ch,
708 u8 clear_ht40_extension_channel)
710 struct il_channel_info *ch_info;
713 (struct il_channel_info *)il_get_channel_info(il, band, channel);
715 if (!il_is_channel_valid(ch_info))
718 D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):"
719 " Ad-Hoc %ssupported\n", ch_info->channel,
720 il_is_channel_a_band(ch_info) ? "5.2" : "2.4",
721 CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE),
722 CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE),
723 CHECK_AND_PRINT(DFS), eeprom_ch->flags,
724 eeprom_ch->max_power_avg,
725 ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) &&
726 !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not ");
728 ch_info->ht40_eeprom = *eeprom_ch;
729 ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
730 ch_info->ht40_flags = eeprom_ch->flags;
731 if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
732 ch_info->ht40_extension_channel &=
733 ~clear_ht40_extension_channel;
738 #define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
742 * il_init_channel_map - Set up driver's info for all possible channels
745 il_init_channel_map(struct il_priv *il)
747 int eeprom_ch_count = 0;
748 const u8 *eeprom_ch_idx = NULL;
749 const struct il_eeprom_channel *eeprom_ch_info = NULL;
751 struct il_channel_info *ch_info;
753 if (il->channel_count) {
754 D_EEPROM("Channel map already initialized.\n");
758 D_EEPROM("Initializing regulatory info from EEPROM\n");
761 ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) +
762 ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) +
763 ARRAY_SIZE(il_eeprom_band_5);
765 D_EEPROM("Parsing data for %d channels.\n", il->channel_count);
768 kzalloc(sizeof(struct il_channel_info) * il->channel_count,
770 if (!il->channel_info) {
771 IL_ERR("Could not allocate channel_info\n");
772 il->channel_count = 0;
776 ch_info = il->channel_info;
778 /* Loop through the 5 EEPROM bands adding them in order to the
779 * channel map we maintain (that contains additional information than
780 * what just in the EEPROM) */
781 for (band = 1; band <= 5; band++) {
783 il_init_band_reference(il, band, &eeprom_ch_count,
784 &eeprom_ch_info, &eeprom_ch_idx);
786 /* Loop through each band adding each of the channels */
787 for (ch = 0; ch < eeprom_ch_count; ch++) {
788 ch_info->channel = eeprom_ch_idx[ch];
791 1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
793 /* permanently store EEPROM's channel regulatory flags
794 * and max power in channel info database. */
795 ch_info->eeprom = eeprom_ch_info[ch];
797 /* Copy the run-time flags so they are there even on
798 * invalid channels */
799 ch_info->flags = eeprom_ch_info[ch].flags;
800 /* First write that ht40 is not enabled, and then enable
802 ch_info->ht40_extension_channel =
803 IEEE80211_CHAN_NO_HT40;
805 if (!(il_is_channel_valid(ch_info))) {
806 D_EEPROM("Ch. %d Flags %x [%sGHz] - "
807 "No traffic\n", ch_info->channel,
809 il_is_channel_a_band(ch_info) ? "5.2" :
815 /* Initialize regulatory-based run-time data */
816 ch_info->max_power_avg = ch_info->curr_txpow =
817 eeprom_ch_info[ch].max_power_avg;
818 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
819 ch_info->min_power = 0;
821 D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):"
822 " Ad-Hoc %ssupported\n", ch_info->channel,
823 il_is_channel_a_band(ch_info) ? "5.2" : "2.4",
824 CHECK_AND_PRINT_I(VALID),
825 CHECK_AND_PRINT_I(IBSS),
826 CHECK_AND_PRINT_I(ACTIVE),
827 CHECK_AND_PRINT_I(RADAR),
828 CHECK_AND_PRINT_I(WIDE),
829 CHECK_AND_PRINT_I(DFS),
830 eeprom_ch_info[ch].flags,
831 eeprom_ch_info[ch].max_power_avg,
832 ((eeprom_ch_info[ch].
833 flags & EEPROM_CHANNEL_IBSS) &&
834 !(eeprom_ch_info[ch].
835 flags & EEPROM_CHANNEL_RADAR)) ? "" :
842 /* Check if we do have HT40 channels */
843 if (il->cfg->ops->lib->eeprom_ops.regulatory_bands[5] ==
844 EEPROM_REGULATORY_BAND_NO_HT40 &&
845 il->cfg->ops->lib->eeprom_ops.regulatory_bands[6] ==
846 EEPROM_REGULATORY_BAND_NO_HT40)
849 /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
850 for (band = 6; band <= 7; band++) {
851 enum ieee80211_band ieeeband;
853 il_init_band_reference(il, band, &eeprom_ch_count,
854 &eeprom_ch_info, &eeprom_ch_idx);
856 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
858 (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
860 /* Loop through each band adding each of the channels */
861 for (ch = 0; ch < eeprom_ch_count; ch++) {
862 /* Set up driver's info for lower half */
863 il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch],
865 IEEE80211_CHAN_NO_HT40PLUS);
867 /* Set up driver's info for upper half */
868 il_mod_ht40_chan_info(il, ieeeband,
869 eeprom_ch_idx[ch] + 4,
871 IEEE80211_CHAN_NO_HT40MINUS);
877 EXPORT_SYMBOL(il_init_channel_map);
880 * il_free_channel_map - undo allocations in il_init_channel_map
883 il_free_channel_map(struct il_priv *il)
885 kfree(il->channel_info);
886 il->channel_count = 0;
888 EXPORT_SYMBOL(il_free_channel_map);
891 * il_get_channel_info - Find driver's ilate channel info
893 * Based on band and channel number.
895 const struct il_channel_info *
896 il_get_channel_info(const struct il_priv *il, enum ieee80211_band band,
902 case IEEE80211_BAND_5GHZ:
903 for (i = 14; i < il->channel_count; i++) {
904 if (il->channel_info[i].channel == channel)
905 return &il->channel_info[i];
908 case IEEE80211_BAND_2GHZ:
909 if (channel >= 1 && channel <= 14)
910 return &il->channel_info[channel - 1];
918 EXPORT_SYMBOL(il_get_channel_info);
921 * Setting power level allows the card to go to sleep when not busy.
923 * We calculate a sleep command based on the required latency, which
924 * we get from mac80211. In order to handle thermal throttling, we can
925 * also use pre-defined power levels.
929 * This defines the old power levels. They are still used by default
930 * (level 1) and for thermal throttle (levels 3 through 5)
933 struct il_power_vec_entry {
934 struct il_powertable_cmd cmd;
935 u8 no_dtim; /* number of skip dtim */
939 il_power_sleep_cam_cmd(struct il_priv *il, struct il_powertable_cmd *cmd)
941 memset(cmd, 0, sizeof(*cmd));
943 if (il->power_data.pci_pm)
944 cmd->flags |= IL_POWER_PCI_PM_MSK;
946 D_POWER("Sleep command for CAM\n");
950 il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd)
952 D_POWER("Sending power/sleep command\n");
953 D_POWER("Flags value = 0x%08X\n", cmd->flags);
954 D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
955 D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
956 D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
957 le32_to_cpu(cmd->sleep_interval[0]),
958 le32_to_cpu(cmd->sleep_interval[1]),
959 le32_to_cpu(cmd->sleep_interval[2]),
960 le32_to_cpu(cmd->sleep_interval[3]),
961 le32_to_cpu(cmd->sleep_interval[4]));
963 return il_send_cmd_pdu(il, C_POWER_TBL,
964 sizeof(struct il_powertable_cmd), cmd);
968 il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force)
973 lockdep_assert_held(&il->mutex);
975 /* Don't update the RX chain when chain noise calibration is running */
976 update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE ||
977 il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE;
979 if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force)
982 if (!il_is_ready_rf(il))
985 /* scan complete use sleep_power_next, need to be updated */
986 memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd));
987 if (test_bit(S_SCANNING, &il->status) && !force) {
988 D_INFO("Defer power set mode while scanning\n");
992 if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)
993 set_bit(S_POWER_PMI, &il->status);
995 ret = il_set_power(il, cmd);
997 if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK))
998 clear_bit(S_POWER_PMI, &il->status);
1000 if (il->cfg->ops->lib->update_chain_flags && update_chains)
1001 il->cfg->ops->lib->update_chain_flags(il);
1002 else if (il->cfg->ops->lib->update_chain_flags)
1003 D_POWER("Cannot update the power, chain noise "
1004 "calibration running: %d\n",
1005 il->chain_noise_data.state);
1007 memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd));
1009 IL_ERR("set power fail, ret = %d", ret);
1015 il_power_update_mode(struct il_priv *il, bool force)
1017 struct il_powertable_cmd cmd;
1019 il_power_sleep_cam_cmd(il, &cmd);
1020 return il_power_set_mode(il, &cmd, force);
1022 EXPORT_SYMBOL(il_power_update_mode);
1024 /* initialize to default */
1026 il_power_initialize(struct il_priv *il)
1028 u16 lctl = il_pcie_link_ctl(il);
1030 il->power_data.pci_pm = !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN);
1032 il->power_data.debug_sleep_level_override = -1;
1034 memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd));
1036 EXPORT_SYMBOL(il_power_initialize);
1038 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
1039 * sending probe req. This should be set long enough to hear probe responses
1040 * from more than one AP. */
1041 #define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
1042 #define IL_ACTIVE_DWELL_TIME_52 (20)
1044 #define IL_ACTIVE_DWELL_FACTOR_24GHZ (3)
1045 #define IL_ACTIVE_DWELL_FACTOR_52GHZ (2)
1047 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
1048 * Must be set longer than active dwell time.
1049 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
1050 #define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
1051 #define IL_PASSIVE_DWELL_TIME_52 (10)
1052 #define IL_PASSIVE_DWELL_BASE (100)
1053 #define IL_CHANNEL_TUNE_TIME 5
1056 il_send_scan_abort(struct il_priv *il)
1059 struct il_rx_pkt *pkt;
1060 struct il_host_cmd cmd = {
1062 .flags = CMD_WANT_SKB,
1065 /* Exit instantly with error when device is not ready
1066 * to receive scan abort command or it does not perform
1067 * hardware scan currently */
1068 if (!test_bit(S_READY, &il->status) ||
1069 !test_bit(S_GEO_CONFIGURED, &il->status) ||
1070 !test_bit(S_SCAN_HW, &il->status) ||
1071 test_bit(S_FW_ERROR, &il->status) ||
1072 test_bit(S_EXIT_PENDING, &il->status))
1075 ret = il_send_cmd_sync(il, &cmd);
1079 pkt = (struct il_rx_pkt *)cmd.reply_page;
1080 if (pkt->u.status != CAN_ABORT_STATUS) {
1081 /* The scan abort will return 1 for success or
1082 * 2 for "failure". A failure condition can be
1083 * due to simply not being in an active scan which
1084 * can occur if we send the scan abort before we
1085 * the microcode has notified us that a scan is
1087 D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status);
1091 il_free_pages(il, cmd.reply_page);
1096 il_complete_scan(struct il_priv *il, bool aborted)
1098 /* check if scan was requested from mac80211 */
1099 if (il->scan_request) {
1100 D_SCAN("Complete scan in mac80211\n");
1101 ieee80211_scan_completed(il->hw, aborted);
1104 il->scan_vif = NULL;
1105 il->scan_request = NULL;
1109 il_force_scan_end(struct il_priv *il)
1111 lockdep_assert_held(&il->mutex);
1113 if (!test_bit(S_SCANNING, &il->status)) {
1114 D_SCAN("Forcing scan end while not scanning\n");
1118 D_SCAN("Forcing scan end\n");
1119 clear_bit(S_SCANNING, &il->status);
1120 clear_bit(S_SCAN_HW, &il->status);
1121 clear_bit(S_SCAN_ABORTING, &il->status);
1122 il_complete_scan(il, true);
1126 il_do_scan_abort(struct il_priv *il)
1130 lockdep_assert_held(&il->mutex);
1132 if (!test_bit(S_SCANNING, &il->status)) {
1133 D_SCAN("Not performing scan to abort\n");
1137 if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) {
1138 D_SCAN("Scan abort in progress\n");
1142 ret = il_send_scan_abort(il);
1144 D_SCAN("Send scan abort failed %d\n", ret);
1145 il_force_scan_end(il);
1147 D_SCAN("Successfully send scan abort\n");
1151 * il_scan_cancel - Cancel any currently executing HW scan
1154 il_scan_cancel(struct il_priv *il)
1156 D_SCAN("Queuing abort scan\n");
1157 queue_work(il->workqueue, &il->abort_scan);
1160 EXPORT_SYMBOL(il_scan_cancel);
1163 * il_scan_cancel_timeout - Cancel any currently executing HW scan
1164 * @ms: amount of time to wait (in milliseconds) for scan to abort
1168 il_scan_cancel_timeout(struct il_priv *il, unsigned long ms)
1170 unsigned long timeout = jiffies + msecs_to_jiffies(ms);
1172 lockdep_assert_held(&il->mutex);
1174 D_SCAN("Scan cancel timeout\n");
1176 il_do_scan_abort(il);
1178 while (time_before_eq(jiffies, timeout)) {
1179 if (!test_bit(S_SCAN_HW, &il->status))
1184 return test_bit(S_SCAN_HW, &il->status);
1186 EXPORT_SYMBOL(il_scan_cancel_timeout);
1188 /* Service response to C_SCAN (0x80) */
1190 il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb)
1192 #ifdef CONFIG_IWLEGACY_DEBUG
1193 struct il_rx_pkt *pkt = rxb_addr(rxb);
1194 struct il_scanreq_notification *notif =
1195 (struct il_scanreq_notification *)pkt->u.raw;
1197 D_SCAN("Scan request status = 0x%x\n", notif->status);
1201 /* Service N_SCAN_START (0x82) */
1203 il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb)
1205 struct il_rx_pkt *pkt = rxb_addr(rxb);
1206 struct il_scanstart_notification *notif =
1207 (struct il_scanstart_notification *)pkt->u.raw;
1208 il->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1209 D_SCAN("Scan start: " "%d [802.11%s] "
1210 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel,
1211 notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high),
1212 le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer);
1215 /* Service N_SCAN_RESULTS (0x83) */
1217 il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb)
1219 #ifdef CONFIG_IWLEGACY_DEBUG
1220 struct il_rx_pkt *pkt = rxb_addr(rxb);
1221 struct il_scanresults_notification *notif =
1222 (struct il_scanresults_notification *)pkt->u.raw;
1224 D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d "
1225 "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a",
1226 le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low),
1227 le32_to_cpu(notif->stats[0]),
1228 le32_to_cpu(notif->tsf_low) - il->scan_start_tsf);
1232 /* Service N_SCAN_COMPLETE (0x84) */
1234 il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb)
1237 #ifdef CONFIG_IWLEGACY_DEBUG
1238 struct il_rx_pkt *pkt = rxb_addr(rxb);
1239 struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1242 D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1243 scan_notif->scanned_channels, scan_notif->tsf_low,
1244 scan_notif->tsf_high, scan_notif->status);
1246 /* The HW is no longer scanning */
1247 clear_bit(S_SCAN_HW, &il->status);
1249 D_SCAN("Scan on %sGHz took %dms\n",
1250 (il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2",
1251 jiffies_to_msecs(jiffies - il->scan_start));
1253 queue_work(il->workqueue, &il->scan_completed);
1257 il_setup_rx_scan_handlers(struct il_priv *il)
1260 il->handlers[C_SCAN] = il_hdl_scan;
1261 il->handlers[N_SCAN_START] = il_hdl_scan_start;
1262 il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results;
1263 il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete;
1265 EXPORT_SYMBOL(il_setup_rx_scan_handlers);
1268 il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band,
1271 if (band == IEEE80211_BAND_5GHZ)
1272 return IL_ACTIVE_DWELL_TIME_52 +
1273 IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
1275 return IL_ACTIVE_DWELL_TIME_24 +
1276 IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
1278 EXPORT_SYMBOL(il_get_active_dwell_time);
1281 il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band,
1282 struct ieee80211_vif *vif)
1284 struct il_rxon_context *ctx = &il->ctx;
1289 IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE +
1290 IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE +
1291 IL_PASSIVE_DWELL_TIME_52;
1293 if (il_is_any_associated(il)) {
1295 * If we're associated, we clamp the maximum passive
1296 * dwell time to be 98% of the smallest beacon interval
1297 * (minus 2 * channel tune time)
1299 value = ctx->vif ? ctx->vif->bss_conf.beacon_int : 0;
1300 if (value > IL_PASSIVE_DWELL_BASE || !value)
1301 value = IL_PASSIVE_DWELL_BASE;
1302 value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2;
1303 passive = min(value, passive);
1308 EXPORT_SYMBOL(il_get_passive_dwell_time);
1311 il_init_scan_params(struct il_priv *il)
1313 u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1;
1314 if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ])
1315 il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx;
1316 if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ])
1317 il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx;
1319 EXPORT_SYMBOL(il_init_scan_params);
1322 il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif)
1326 lockdep_assert_held(&il->mutex);
1328 if (WARN_ON(!il->cfg->ops->utils->request_scan))
1331 cancel_delayed_work(&il->scan_check);
1333 if (!il_is_ready_rf(il)) {
1334 IL_WARN("Request scan called when driver not ready.\n");
1338 if (test_bit(S_SCAN_HW, &il->status)) {
1339 D_SCAN("Multiple concurrent scan requests in parallel.\n");
1343 if (test_bit(S_SCAN_ABORTING, &il->status)) {
1344 D_SCAN("Scan request while abort pending.\n");
1348 D_SCAN("Starting scan...\n");
1350 set_bit(S_SCANNING, &il->status);
1351 il->scan_start = jiffies;
1353 ret = il->cfg->ops->utils->request_scan(il, vif);
1355 clear_bit(S_SCANNING, &il->status);
1359 queue_delayed_work(il->workqueue, &il->scan_check,
1360 IL_SCAN_CHECK_WATCHDOG);
1366 il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1367 struct cfg80211_scan_request *req)
1369 struct il_priv *il = hw->priv;
1372 D_MAC80211("enter\n");
1374 if (req->n_channels == 0)
1377 mutex_lock(&il->mutex);
1379 if (test_bit(S_SCANNING, &il->status)) {
1380 D_SCAN("Scan already in progress.\n");
1385 /* mac80211 will only ask for one band at a time */
1386 il->scan_request = req;
1388 il->scan_band = req->channels[0]->band;
1390 ret = il_scan_initiate(il, vif);
1392 D_MAC80211("leave\n");
1395 mutex_unlock(&il->mutex);
1399 EXPORT_SYMBOL(il_mac_hw_scan);
1402 il_bg_scan_check(struct work_struct *data)
1404 struct il_priv *il =
1405 container_of(data, struct il_priv, scan_check.work);
1407 D_SCAN("Scan check work\n");
1409 /* Since we are here firmware does not finish scan and
1410 * most likely is in bad shape, so we don't bother to
1411 * send abort command, just force scan complete to mac80211 */
1412 mutex_lock(&il->mutex);
1413 il_force_scan_end(il);
1414 mutex_unlock(&il->mutex);
1418 * il_fill_probe_req - fill in all required fields and IE for probe request
1422 il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame,
1423 const u8 *ta, const u8 *ies, int ie_len, int left)
1428 /* Make sure there is enough space for the probe request,
1429 * two mandatory IEs and the data */
1434 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1435 memcpy(frame->da, il_bcast_addr, ETH_ALEN);
1436 memcpy(frame->sa, ta, ETH_ALEN);
1437 memcpy(frame->bssid, il_bcast_addr, ETH_ALEN);
1438 frame->seq_ctrl = 0;
1443 pos = &frame->u.probe_req.variable[0];
1445 /* fill in our indirect SSID IE */
1449 *pos++ = WLAN_EID_SSID;
1454 if (WARN_ON(left < ie_len))
1457 if (ies && ie_len) {
1458 memcpy(pos, ies, ie_len);
1464 EXPORT_SYMBOL(il_fill_probe_req);
1467 il_bg_abort_scan(struct work_struct *work)
1469 struct il_priv *il = container_of(work, struct il_priv, abort_scan);
1471 D_SCAN("Abort scan work\n");
1473 /* We keep scan_check work queued in case when firmware will not
1474 * report back scan completed notification */
1475 mutex_lock(&il->mutex);
1476 il_scan_cancel_timeout(il, 200);
1477 mutex_unlock(&il->mutex);
1481 il_bg_scan_completed(struct work_struct *work)
1483 struct il_priv *il = container_of(work, struct il_priv, scan_completed);
1486 D_SCAN("Completed scan.\n");
1488 cancel_delayed_work(&il->scan_check);
1490 mutex_lock(&il->mutex);
1492 aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status);
1494 D_SCAN("Aborted scan completed.\n");
1496 if (!test_and_clear_bit(S_SCANNING, &il->status)) {
1497 D_SCAN("Scan already completed.\n");
1501 il_complete_scan(il, aborted);
1504 /* Can we still talk to firmware ? */
1505 if (!il_is_ready_rf(il))
1509 * We do not commit power settings while scan is pending,
1510 * do it now if the settings changed.
1512 il_power_set_mode(il, &il->power_data.sleep_cmd_next, false);
1513 il_set_tx_power(il, il->tx_power_next, false);
1515 il->cfg->ops->utils->post_scan(il);
1518 mutex_unlock(&il->mutex);
1522 il_setup_scan_deferred_work(struct il_priv *il)
1524 INIT_WORK(&il->scan_completed, il_bg_scan_completed);
1525 INIT_WORK(&il->abort_scan, il_bg_abort_scan);
1526 INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check);
1528 EXPORT_SYMBOL(il_setup_scan_deferred_work);
1531 il_cancel_scan_deferred_work(struct il_priv *il)
1533 cancel_work_sync(&il->abort_scan);
1534 cancel_work_sync(&il->scan_completed);
1536 if (cancel_delayed_work_sync(&il->scan_check)) {
1537 mutex_lock(&il->mutex);
1538 il_force_scan_end(il);
1539 mutex_unlock(&il->mutex);
1542 EXPORT_SYMBOL(il_cancel_scan_deferred_work);
1544 /* il->sta_lock must be held */
1546 il_sta_ucode_activate(struct il_priv *il, u8 sta_id)
1549 if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE))
1550 IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n",
1551 sta_id, il->stations[sta_id].sta.sta.addr);
1553 if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) {
1554 D_ASSOC("STA id %u addr %pM already present"
1555 " in uCode (according to driver)\n", sta_id,
1556 il->stations[sta_id].sta.sta.addr);
1558 il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE;
1559 D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id,
1560 il->stations[sta_id].sta.sta.addr);
1565 il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta,
1566 struct il_rx_pkt *pkt, bool sync)
1568 u8 sta_id = addsta->sta.sta_id;
1569 unsigned long flags;
1572 if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
1573 IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags);
1577 D_INFO("Processing response for adding station %u\n", sta_id);
1579 spin_lock_irqsave(&il->sta_lock, flags);
1581 switch (pkt->u.add_sta.status) {
1582 case ADD_STA_SUCCESS_MSK:
1583 D_INFO("C_ADD_STA PASSED\n");
1584 il_sta_ucode_activate(il, sta_id);
1587 case ADD_STA_NO_ROOM_IN_TBL:
1588 IL_ERR("Adding station %d failed, no room in table.\n", sta_id);
1590 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
1591 IL_ERR("Adding station %d failed, no block ack resource.\n",
1594 case ADD_STA_MODIFY_NON_EXIST_STA:
1595 IL_ERR("Attempting to modify non-existing station %d\n",
1599 D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status);
1603 D_INFO("%s station id %u addr %pM\n",
1604 il->stations[sta_id].sta.mode ==
1605 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id,
1606 il->stations[sta_id].sta.sta.addr);
1609 * XXX: The MAC address in the command buffer is often changed from
1610 * the original sent to the device. That is, the MAC address
1611 * written to the command buffer often is not the same MAC address
1612 * read from the command buffer when the command returns. This
1613 * issue has not yet been resolved and this debugging is left to
1614 * observe the problem.
1616 D_INFO("%s station according to cmd buffer %pM\n",
1617 il->stations[sta_id].sta.mode ==
1618 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr);
1619 spin_unlock_irqrestore(&il->sta_lock, flags);
1625 il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd,
1626 struct il_rx_pkt *pkt)
1628 struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload;
1630 il_process_add_sta_resp(il, addsta, pkt, false);
1635 il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags)
1637 struct il_rx_pkt *pkt = NULL;
1639 u8 data[sizeof(*sta)];
1640 struct il_host_cmd cmd = {
1645 u8 sta_id __maybe_unused = sta->sta.sta_id;
1647 D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr,
1648 flags & CMD_ASYNC ? "a" : "");
1650 if (flags & CMD_ASYNC)
1651 cmd.callback = il_add_sta_callback;
1653 cmd.flags |= CMD_WANT_SKB;
1657 cmd.len = il->cfg->ops->utils->build_addsta_hcmd(sta, data);
1658 ret = il_send_cmd(il, &cmd);
1660 if (ret || (flags & CMD_ASYNC))
1664 pkt = (struct il_rx_pkt *)cmd.reply_page;
1665 ret = il_process_add_sta_resp(il, sta, pkt, true);
1667 il_free_pages(il, cmd.reply_page);
1671 EXPORT_SYMBOL(il_send_add_sta);
1674 il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta,
1675 struct il_rxon_context *ctx)
1677 struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
1681 if (!sta || !sta_ht_inf->ht_supported)
1684 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
1685 D_ASSOC("spatial multiplexing power save mode: %s\n",
1686 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? "static" :
1687 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? "dynamic" :
1690 sta_flags = il->stations[idx].sta.station_flags;
1692 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
1694 switch (mimo_ps_mode) {
1695 case WLAN_HT_CAP_SM_PS_STATIC:
1696 sta_flags |= STA_FLG_MIMO_DIS_MSK;
1698 case WLAN_HT_CAP_SM_PS_DYNAMIC:
1699 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
1701 case WLAN_HT_CAP_SM_PS_DISABLED:
1704 IL_WARN("Invalid MIMO PS mode %d\n", mimo_ps_mode);
1709 cpu_to_le32((u32) sta_ht_inf->
1710 ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
1713 cpu_to_le32((u32) sta_ht_inf->
1714 ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
1716 if (il_is_ht40_tx_allowed(il, ctx, &sta->ht_cap))
1717 sta_flags |= STA_FLG_HT40_EN_MSK;
1719 sta_flags &= ~STA_FLG_HT40_EN_MSK;
1721 il->stations[idx].sta.station_flags = sta_flags;
1727 * il_prep_station - Prepare station information for addition
1729 * should be called with sta_lock held
1732 il_prep_station(struct il_priv *il, struct il_rxon_context *ctx,
1733 const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
1735 struct il_station_entry *station;
1737 u8 sta_id = IL_INVALID_STATION;
1741 sta_id = ctx->ap_sta_id;
1742 else if (is_broadcast_ether_addr(addr))
1743 sta_id = ctx->bcast_sta_id;
1745 for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) {
1746 if (!compare_ether_addr
1747 (il->stations[i].sta.sta.addr, addr)) {
1752 if (!il->stations[i].used &&
1753 sta_id == IL_INVALID_STATION)
1758 * These two conditions have the same outcome, but keep them
1761 if (unlikely(sta_id == IL_INVALID_STATION))
1765 * uCode is not able to deal with multiple requests to add a
1766 * station. Keep track if one is in progress so that we do not send
1769 if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
1770 D_INFO("STA %d already in process of being added.\n", sta_id);
1774 if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
1775 (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) &&
1776 !compare_ether_addr(il->stations[sta_id].sta.sta.addr, addr)) {
1777 D_ASSOC("STA %d (%pM) already added, not adding again.\n",
1782 station = &il->stations[sta_id];
1783 station->used = IL_STA_DRIVER_ACTIVE;
1784 D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr);
1787 /* Set up the C_ADD_STA command to send to device */
1788 memset(&station->sta, 0, sizeof(struct il_addsta_cmd));
1789 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
1790 station->sta.mode = 0;
1791 station->sta.sta.sta_id = sta_id;
1792 station->sta.station_flags = ctx->station_flags;
1793 station->ctxid = ctx->ctxid;
1796 struct il_station_priv_common *sta_priv;
1798 sta_priv = (void *)sta->drv_priv;
1799 sta_priv->ctx = ctx;
1803 * OK to call unconditionally, since local stations (IBSS BSSID
1804 * STA and broadcast STA) pass in a NULL sta, and mac80211
1805 * doesn't allow HT IBSS.
1807 il_set_ht_add_station(il, sta_id, sta, ctx);
1810 rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP;
1811 /* Turn on both antennas for the station... */
1812 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
1817 EXPORT_SYMBOL_GPL(il_prep_station);
1819 #define STA_WAIT_TIMEOUT (HZ/2)
1822 * il_add_station_common -
1825 il_add_station_common(struct il_priv *il, struct il_rxon_context *ctx,
1826 const u8 *addr, bool is_ap, struct ieee80211_sta *sta,
1829 unsigned long flags_spin;
1832 struct il_addsta_cmd sta_cmd;
1835 spin_lock_irqsave(&il->sta_lock, flags_spin);
1836 sta_id = il_prep_station(il, ctx, addr, is_ap, sta);
1837 if (sta_id == IL_INVALID_STATION) {
1838 IL_ERR("Unable to prepare station %pM for addition\n", addr);
1839 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
1844 * uCode is not able to deal with multiple requests to add a
1845 * station. Keep track if one is in progress so that we do not send
1848 if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
1849 D_INFO("STA %d already in process of being added.\n", sta_id);
1850 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
1854 if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
1855 (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
1856 D_ASSOC("STA %d (%pM) already added, not adding again.\n",
1858 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
1862 il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS;
1863 memcpy(&sta_cmd, &il->stations[sta_id].sta,
1864 sizeof(struct il_addsta_cmd));
1865 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
1867 /* Add station to device's station table */
1868 ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
1870 spin_lock_irqsave(&il->sta_lock, flags_spin);
1871 IL_ERR("Adding station %pM failed.\n",
1872 il->stations[sta_id].sta.sta.addr);
1873 il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
1874 il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
1875 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
1880 EXPORT_SYMBOL(il_add_station_common);
1883 * il_sta_ucode_deactivate - deactivate ucode status for a station
1885 * il->sta_lock must be held
1888 il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id)
1890 /* Ucode must be active and driver must be non active */
1891 if ((il->stations[sta_id].
1892 used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) !=
1893 IL_STA_UCODE_ACTIVE)
1894 IL_ERR("removed non active STA %u\n", sta_id);
1896 il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE;
1898 memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry));
1899 D_ASSOC("Removed STA %u\n", sta_id);
1903 il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id,
1906 struct il_rx_pkt *pkt;
1909 unsigned long flags_spin;
1910 struct il_rem_sta_cmd rm_sta_cmd;
1912 struct il_host_cmd cmd = {
1914 .len = sizeof(struct il_rem_sta_cmd),
1916 .data = &rm_sta_cmd,
1919 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
1920 rm_sta_cmd.num_sta = 1;
1921 memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
1923 cmd.flags |= CMD_WANT_SKB;
1925 ret = il_send_cmd(il, &cmd);
1930 pkt = (struct il_rx_pkt *)cmd.reply_page;
1931 if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
1932 IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags);
1937 switch (pkt->u.rem_sta.status) {
1938 case REM_STA_SUCCESS_MSK:
1940 spin_lock_irqsave(&il->sta_lock, flags_spin);
1941 il_sta_ucode_deactivate(il, sta_id);
1942 spin_unlock_irqrestore(&il->sta_lock,
1945 D_ASSOC("C_REM_STA PASSED\n");
1949 IL_ERR("C_REM_STA failed\n");
1953 il_free_pages(il, cmd.reply_page);
1959 * il_remove_station - Remove driver's knowledge of station.
1962 il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr)
1964 unsigned long flags;
1966 if (!il_is_ready(il)) {
1967 D_INFO("Unable to remove station %pM, device not ready.\n",
1970 * It is typical for stations to be removed when we are
1971 * going down. Return success since device will be down
1977 D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr);
1979 if (WARN_ON(sta_id == IL_INVALID_STATION))
1982 spin_lock_irqsave(&il->sta_lock, flags);
1984 if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) {
1985 D_INFO("Removing %pM but non DRIVER active\n", addr);
1989 if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
1990 D_INFO("Removing %pM but non UCODE active\n", addr);
1994 if (il->stations[sta_id].used & IL_STA_LOCAL) {
1995 kfree(il->stations[sta_id].lq);
1996 il->stations[sta_id].lq = NULL;
1999 il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
2003 BUG_ON(il->num_stations < 0);
2005 spin_unlock_irqrestore(&il->sta_lock, flags);
2007 return il_send_remove_station(il, addr, sta_id, false);
2009 spin_unlock_irqrestore(&il->sta_lock, flags);
2012 EXPORT_SYMBOL_GPL(il_remove_station);
2015 * il_clear_ucode_stations - clear ucode station table bits
2017 * This function clears all the bits in the driver indicating
2018 * which stations are active in the ucode. Call when something
2019 * other than explicit station management would cause this in
2020 * the ucode, e.g. unassociated RXON.
2023 il_clear_ucode_stations(struct il_priv *il, struct il_rxon_context *ctx)
2026 unsigned long flags_spin;
2027 bool cleared = false;
2029 D_INFO("Clearing ucode stations in driver\n");
2031 spin_lock_irqsave(&il->sta_lock, flags_spin);
2032 for (i = 0; i < il->hw_params.max_stations; i++) {
2033 if (ctx && ctx->ctxid != il->stations[i].ctxid)
2036 if (il->stations[i].used & IL_STA_UCODE_ACTIVE) {
2037 D_INFO("Clearing ucode active for station %d\n", i);
2038 il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
2042 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2045 D_INFO("No active stations found to be cleared\n");
2047 EXPORT_SYMBOL(il_clear_ucode_stations);
2050 * il_restore_stations() - Restore driver known stations to device
2052 * All stations considered active by driver, but not present in ucode, is
2058 il_restore_stations(struct il_priv *il, struct il_rxon_context *ctx)
2060 struct il_addsta_cmd sta_cmd;
2061 struct il_link_quality_cmd lq;
2062 unsigned long flags_spin;
2068 if (!il_is_ready(il)) {
2069 D_INFO("Not ready yet, not restoring any stations.\n");
2073 D_ASSOC("Restoring all known stations ... start.\n");
2074 spin_lock_irqsave(&il->sta_lock, flags_spin);
2075 for (i = 0; i < il->hw_params.max_stations; i++) {
2076 if (ctx->ctxid != il->stations[i].ctxid)
2078 if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) &&
2079 !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) {
2080 D_ASSOC("Restoring sta %pM\n",
2081 il->stations[i].sta.sta.addr);
2082 il->stations[i].sta.mode = 0;
2083 il->stations[i].used |= IL_STA_UCODE_INPROGRESS;
2088 for (i = 0; i < il->hw_params.max_stations; i++) {
2089 if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) {
2090 memcpy(&sta_cmd, &il->stations[i].sta,
2091 sizeof(struct il_addsta_cmd));
2093 if (il->stations[i].lq) {
2094 memcpy(&lq, il->stations[i].lq,
2095 sizeof(struct il_link_quality_cmd));
2098 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2099 ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
2101 spin_lock_irqsave(&il->sta_lock, flags_spin);
2102 IL_ERR("Adding station %pM failed.\n",
2103 il->stations[i].sta.sta.addr);
2104 il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE;
2105 il->stations[i].used &=
2106 ~IL_STA_UCODE_INPROGRESS;
2107 spin_unlock_irqrestore(&il->sta_lock,
2111 * Rate scaling has already been initialized, send
2112 * current LQ command
2115 il_send_lq_cmd(il, ctx, &lq, CMD_SYNC, true);
2116 spin_lock_irqsave(&il->sta_lock, flags_spin);
2117 il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS;
2121 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2123 D_INFO("Restoring all known stations"
2124 " .... no stations to be restored.\n");
2126 D_INFO("Restoring all known stations" " .... complete.\n");
2128 EXPORT_SYMBOL(il_restore_stations);
2131 il_get_free_ucode_key_idx(struct il_priv *il)
2135 for (i = 0; i < il->sta_key_max_num; i++)
2136 if (!test_and_set_bit(i, &il->ucode_key_table))
2139 return WEP_INVALID_OFFSET;
2141 EXPORT_SYMBOL(il_get_free_ucode_key_idx);
2144 il_dealloc_bcast_stations(struct il_priv *il)
2146 unsigned long flags;
2149 spin_lock_irqsave(&il->sta_lock, flags);
2150 for (i = 0; i < il->hw_params.max_stations; i++) {
2151 if (!(il->stations[i].used & IL_STA_BCAST))
2154 il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
2156 BUG_ON(il->num_stations < 0);
2157 kfree(il->stations[i].lq);
2158 il->stations[i].lq = NULL;
2160 spin_unlock_irqrestore(&il->sta_lock, flags);
2162 EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations);
2164 #ifdef CONFIG_IWLEGACY_DEBUG
2166 il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq)
2169 D_RATE("lq station id 0x%x\n", lq->sta_id);
2170 D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk,
2171 lq->general_params.dual_stream_ant_msk);
2173 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
2174 D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags);
2178 il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq)
2184 * il_is_lq_table_valid() - Test one aspect of LQ cmd for validity
2186 * It sometimes happens when a HT rate has been in use and we
2187 * loose connectivity with AP then mac80211 will first tell us that the
2188 * current channel is not HT anymore before removing the station. In such a
2189 * scenario the RXON flags will be updated to indicate we are not
2190 * communicating HT anymore, but the LQ command may still contain HT rates.
2191 * Test for this to prevent driver from sending LQ command between the time
2192 * RXON flags are updated and when LQ command is updated.
2195 il_is_lq_table_valid(struct il_priv *il, struct il_rxon_context *ctx,
2196 struct il_link_quality_cmd *lq)
2200 if (ctx->ht.enabled)
2203 D_INFO("Channel %u is not an HT channel\n", ctx->active.channel);
2204 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
2205 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
2206 D_INFO("idx %d of LQ expects HT channel\n", i);
2214 * il_send_lq_cmd() - Send link quality command
2215 * @init: This command is sent as part of station initialization right
2216 * after station has been added.
2218 * The link quality command is sent as the last step of station creation.
2219 * This is the special case in which init is set and we call a callback in
2220 * this case to clear the state indicating that station creation is in
2224 il_send_lq_cmd(struct il_priv *il, struct il_rxon_context *ctx,
2225 struct il_link_quality_cmd *lq, u8 flags, bool init)
2228 unsigned long flags_spin;
2230 struct il_host_cmd cmd = {
2231 .id = C_TX_LINK_QUALITY_CMD,
2232 .len = sizeof(struct il_link_quality_cmd),
2237 if (WARN_ON(lq->sta_id == IL_INVALID_STATION))
2240 spin_lock_irqsave(&il->sta_lock, flags_spin);
2241 if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) {
2242 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2245 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2247 il_dump_lq_cmd(il, lq);
2248 BUG_ON(init && (cmd.flags & CMD_ASYNC));
2250 if (il_is_lq_table_valid(il, ctx, lq))
2251 ret = il_send_cmd(il, &cmd);
2255 if (cmd.flags & CMD_ASYNC)
2259 D_INFO("init LQ command complete,"
2260 " clearing sta addition status for sta %d\n",
2262 spin_lock_irqsave(&il->sta_lock, flags_spin);
2263 il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
2264 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
2268 EXPORT_SYMBOL(il_send_lq_cmd);
2271 il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2272 struct ieee80211_sta *sta)
2274 struct il_priv *il = hw->priv;
2275 struct il_station_priv_common *sta_common = (void *)sta->drv_priv;
2278 D_INFO("received request to remove station %pM\n", sta->addr);
2279 mutex_lock(&il->mutex);
2280 D_INFO("proceeding to remove station %pM\n", sta->addr);
2281 ret = il_remove_station(il, sta_common->sta_id, sta->addr);
2283 IL_ERR("Error removing station %pM\n", sta->addr);
2284 mutex_unlock(&il->mutex);
2287 EXPORT_SYMBOL(il_mac_sta_remove);
2289 /************************** RX-FUNCTIONS ****************************/
2291 * Rx theory of operation
2293 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
2294 * each of which point to Receive Buffers to be filled by the NIC. These get
2295 * used not only for Rx frames, but for any command response or notification
2296 * from the NIC. The driver and NIC manage the Rx buffers by means
2297 * of idxes into the circular buffer.
2300 * The host/firmware share two idx registers for managing the Rx buffers.
2302 * The READ idx maps to the first position that the firmware may be writing
2303 * to -- the driver can read up to (but not including) this position and get
2305 * The READ idx is managed by the firmware once the card is enabled.
2307 * The WRITE idx maps to the last position the driver has read from -- the
2308 * position preceding WRITE is the last slot the firmware can place a packet.
2310 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
2313 * During initialization, the host sets up the READ queue position to the first
2314 * IDX position, and WRITE to the last (READ - 1 wrapped)
2316 * When the firmware places a packet in a buffer, it will advance the READ idx
2317 * and fire the RX interrupt. The driver can then query the READ idx and
2318 * process as many packets as possible, moving the WRITE idx forward as it
2319 * resets the Rx queue buffers with new memory.
2321 * The management in the driver is as follows:
2322 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
2323 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
2324 * to replenish the iwl->rxq->rx_free.
2325 * + In il_rx_replenish (scheduled) if 'processed' != 'read' then the
2326 * iwl->rxq is replenished and the READ IDX is updated (updating the
2327 * 'processed' and 'read' driver idxes as well)
2328 * + A received packet is processed and handed to the kernel network stack,
2329 * detached from the iwl->rxq. The driver 'processed' idx is updated.
2330 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
2331 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
2332 * IDX is not incremented and iwl->status(RX_STALLED) is set. If there
2333 * were enough free buffers and RX_STALLED is set it is cleared.
2338 * il_rx_queue_alloc() Allocates rx_free
2339 * il_rx_replenish() Replenishes rx_free list from rx_used, and calls
2340 * il_rx_queue_restock
2341 * il_rx_queue_restock() Moves available buffers from rx_free into Rx
2342 * queue, updates firmware pointers, and updates
2343 * the WRITE idx. If insufficient rx_free buffers
2344 * are available, schedules il_rx_replenish
2346 * -- enable interrupts --
2347 * ISR - il_rx() Detach il_rx_bufs from pool up to the
2348 * READ IDX, detaching the SKB from the pool.
2349 * Moves the packet buffer from queue to rx_used.
2350 * Calls il_rx_queue_restock to refill any empty
2357 * il_rx_queue_space - Return number of free slots available in queue.
2360 il_rx_queue_space(const struct il_rx_queue *q)
2362 int s = q->read - q->write;
2365 /* keep some buffer to not confuse full and empty queue */
2371 EXPORT_SYMBOL(il_rx_queue_space);
2374 * il_rx_queue_update_write_ptr - Update the write pointer for the RX queue
2377 il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q)
2379 unsigned long flags;
2380 u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg;
2383 spin_lock_irqsave(&q->lock, flags);
2385 if (q->need_update == 0)
2388 /* If power-saving is in use, make sure device is awake */
2389 if (test_bit(S_POWER_PMI, &il->status)) {
2390 reg = _il_rd(il, CSR_UCODE_DRV_GP1);
2392 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
2393 D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n",
2395 il_set_bit(il, CSR_GP_CNTRL,
2396 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2400 q->write_actual = (q->write & ~0x7);
2401 il_wr(il, rx_wrt_ptr_reg, q->write_actual);
2403 /* Else device is assumed to be awake */
2405 /* Device expects a multiple of 8 */
2406 q->write_actual = (q->write & ~0x7);
2407 il_wr(il, rx_wrt_ptr_reg, q->write_actual);
2413 spin_unlock_irqrestore(&q->lock, flags);
2415 EXPORT_SYMBOL(il_rx_queue_update_write_ptr);
2418 il_rx_queue_alloc(struct il_priv *il)
2420 struct il_rx_queue *rxq = &il->rxq;
2421 struct device *dev = &il->pci_dev->dev;
2424 spin_lock_init(&rxq->lock);
2425 INIT_LIST_HEAD(&rxq->rx_free);
2426 INIT_LIST_HEAD(&rxq->rx_used);
2428 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
2430 dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma,
2436 dma_alloc_coherent(dev, sizeof(struct il_rb_status),
2437 &rxq->rb_stts_dma, GFP_KERNEL);
2441 /* Fill the rx_used queue with _all_ of the Rx buffers */
2442 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
2443 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
2445 /* Set us so that we have processed and used all buffers, but have
2446 * not restocked the Rx queue with fresh buffers */
2447 rxq->read = rxq->write = 0;
2448 rxq->write_actual = 0;
2449 rxq->free_count = 0;
2450 rxq->need_update = 0;
2454 dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
2459 EXPORT_SYMBOL(il_rx_queue_alloc);
2462 il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb)
2464 struct il_rx_pkt *pkt = rxb_addr(rxb);
2465 struct il_spectrum_notification *report = &(pkt->u.spectrum_notif);
2467 if (!report->state) {
2468 D_11H("Spectrum Measure Notification: Start\n");
2472 memcpy(&il->measure_report, report, sizeof(*report));
2473 il->measurement_status |= MEASUREMENT_READY;
2475 EXPORT_SYMBOL(il_hdl_spectrum_measurement);
2478 * returns non-zero if packet should be dropped
2481 il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr,
2482 u32 decrypt_res, struct ieee80211_rx_status *stats)
2484 u16 fc = le16_to_cpu(hdr->frame_control);
2487 * All contexts have the same setting here due to it being
2488 * a module parameter, so OK to check any context.
2490 if (il->ctx.active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2493 if (!(fc & IEEE80211_FCTL_PROTECTED))
2496 D_RX("decrypt_res:0x%x\n", decrypt_res);
2497 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2498 case RX_RES_STATUS_SEC_TYPE_TKIP:
2499 /* The uCode has got a bad phase 1 Key, pushes the packet.
2500 * Decryption will be done in SW. */
2501 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2502 RX_RES_STATUS_BAD_KEY_TTAK)
2505 case RX_RES_STATUS_SEC_TYPE_WEP:
2506 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2507 RX_RES_STATUS_BAD_ICV_MIC) {
2508 /* bad ICV, the packet is destroyed since the
2509 * decryption is inplace, drop it */
2510 D_RX("Packet destroyed\n");
2513 case RX_RES_STATUS_SEC_TYPE_CCMP:
2514 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2515 RX_RES_STATUS_DECRYPT_OK) {
2516 D_RX("hw decrypt successfully!!!\n");
2517 stats->flag |= RX_FLAG_DECRYPTED;
2526 EXPORT_SYMBOL(il_set_decrypted_flag);
2529 * il_txq_update_write_ptr - Send new write idx to hardware
2532 il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq)
2535 int txq_id = txq->q.id;
2537 if (txq->need_update == 0)
2540 /* if we're trying to save power */
2541 if (test_bit(S_POWER_PMI, &il->status)) {
2542 /* wake up nic if it's powered down ...
2543 * uCode will wake up, and interrupt us again, so next
2544 * time we'll skip this part. */
2545 reg = _il_rd(il, CSR_UCODE_DRV_GP1);
2547 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
2548 D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n",
2550 il_set_bit(il, CSR_GP_CNTRL,
2551 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2555 il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8));
2558 * else not in power-save mode,
2559 * uCode will never sleep when we're
2560 * trying to tx (during RFKILL, we're not trying to tx).
2563 _il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8));
2564 txq->need_update = 0;
2566 EXPORT_SYMBOL(il_txq_update_write_ptr);
2569 * il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's
2572 il_tx_queue_unmap(struct il_priv *il, int txq_id)
2574 struct il_tx_queue *txq = &il->txq[txq_id];
2575 struct il_queue *q = &txq->q;
2580 while (q->write_ptr != q->read_ptr) {
2581 il->cfg->ops->lib->txq_free_tfd(il, txq);
2582 q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd);
2585 EXPORT_SYMBOL(il_tx_queue_unmap);
2588 * il_tx_queue_free - Deallocate DMA queue.
2589 * @txq: Transmit queue to deallocate.
2591 * Empty queue by removing and destroying all BD's.
2593 * 0-fill, but do not free "txq" descriptor structure.
2596 il_tx_queue_free(struct il_priv *il, int txq_id)
2598 struct il_tx_queue *txq = &il->txq[txq_id];
2599 struct device *dev = &il->pci_dev->dev;
2602 il_tx_queue_unmap(il, txq_id);
2604 /* De-alloc array of command/tx buffers */
2605 for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
2608 /* De-alloc circular buffer of TFDs */
2610 dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd,
2611 txq->tfds, txq->q.dma_addr);
2613 /* De-alloc array of per-TFD driver data */
2617 /* deallocate arrays */
2623 /* 0-fill queue descriptor structure */
2624 memset(txq, 0, sizeof(*txq));
2626 EXPORT_SYMBOL(il_tx_queue_free);
2629 * il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue
2632 il_cmd_queue_unmap(struct il_priv *il)
2634 struct il_tx_queue *txq = &il->txq[il->cmd_queue];
2635 struct il_queue *q = &txq->q;
2641 while (q->read_ptr != q->write_ptr) {
2642 i = il_get_cmd_idx(q, q->read_ptr, 0);
2644 if (txq->meta[i].flags & CMD_MAPPED) {
2645 pci_unmap_single(il->pci_dev,
2646 dma_unmap_addr(&txq->meta[i], mapping),
2647 dma_unmap_len(&txq->meta[i], len),
2648 PCI_DMA_BIDIRECTIONAL);
2649 txq->meta[i].flags = 0;
2652 q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd);
2656 if (txq->meta[i].flags & CMD_MAPPED) {
2657 pci_unmap_single(il->pci_dev,
2658 dma_unmap_addr(&txq->meta[i], mapping),
2659 dma_unmap_len(&txq->meta[i], len),
2660 PCI_DMA_BIDIRECTIONAL);
2661 txq->meta[i].flags = 0;
2664 EXPORT_SYMBOL(il_cmd_queue_unmap);
2667 * il_cmd_queue_free - Deallocate DMA queue.
2668 * @txq: Transmit queue to deallocate.
2670 * Empty queue by removing and destroying all BD's.
2672 * 0-fill, but do not free "txq" descriptor structure.
2675 il_cmd_queue_free(struct il_priv *il)
2677 struct il_tx_queue *txq = &il->txq[il->cmd_queue];
2678 struct device *dev = &il->pci_dev->dev;
2681 il_cmd_queue_unmap(il);
2683 /* De-alloc array of command/tx buffers */
2684 for (i = 0; i <= TFD_CMD_SLOTS; i++)
2687 /* De-alloc circular buffer of TFDs */
2689 dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd,
2690 txq->tfds, txq->q.dma_addr);
2692 /* deallocate arrays */
2698 /* 0-fill queue descriptor structure */
2699 memset(txq, 0, sizeof(*txq));
2701 EXPORT_SYMBOL(il_cmd_queue_free);
2703 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
2706 * Theory of operation
2708 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
2709 * of buffer descriptors, each of which points to one or more data buffers for
2710 * the device to read from or fill. Driver and device exchange status of each
2711 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
2712 * entries in each circular buffer, to protect against confusing empty and full
2715 * The device reads or writes the data in the queues via the device's several
2716 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
2718 * For Tx queue, there are low mark and high mark limits. If, after queuing
2719 * the packet for Tx, free space become < low mark, Tx queue stopped. When
2720 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
2723 * See more detailed info in 4965.h.
2724 ***************************************************/
2727 il_queue_space(const struct il_queue *q)
2729 int s = q->read_ptr - q->write_ptr;
2731 if (q->read_ptr > q->write_ptr)
2736 /* keep some reserve to not confuse empty and full situations */
2742 EXPORT_SYMBOL(il_queue_space);
2746 * il_queue_init - Initialize queue's high/low-water and read/write idxes
2749 il_queue_init(struct il_priv *il, struct il_queue *q, int count, int slots_num,
2753 q->n_win = slots_num;
2756 /* count must be power-of-two size, otherwise il_queue_inc_wrap
2757 * and il_queue_dec_wrap are broken. */
2758 BUG_ON(!is_power_of_2(count));
2760 /* slots_num must be power-of-two size, otherwise
2761 * il_get_cmd_idx is broken. */
2762 BUG_ON(!is_power_of_2(slots_num));
2764 q->low_mark = q->n_win / 4;
2765 if (q->low_mark < 4)
2768 q->high_mark = q->n_win / 8;
2769 if (q->high_mark < 2)
2772 q->write_ptr = q->read_ptr = 0;
2778 * il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
2781 il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id)
2783 struct device *dev = &il->pci_dev->dev;
2784 size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
2786 /* Driver ilate data, only for Tx (not command) queues,
2787 * not shared with device. */
2788 if (id != il->cmd_queue) {
2790 kzalloc(sizeof(txq->txb[0]) * TFD_QUEUE_SIZE_MAX,
2793 IL_ERR("kmalloc for auxiliary BD "
2794 "structures failed\n");
2801 /* Circular buffer of transmit frame descriptors (TFDs),
2802 * shared with device */
2804 dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL);
2806 IL_ERR("pci_alloc_consistent(%zd) failed\n", tfd_sz);
2821 * il_tx_queue_init - Allocate and initialize one tx/cmd queue
2824 il_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq, int slots_num,
2829 int actual_slots = slots_num;
2832 * Alloc buffer array for commands (Tx or other types of commands).
2833 * For the command queue (#4/#9), allocate command space + one big
2834 * command for scan, since scan command is very huge; the system will
2835 * not have two scans at the same time, so only one is needed.
2836 * For normal Tx queues (all other queues), no super-size command
2839 if (txq_id == il->cmd_queue)
2843 kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL);
2845 kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL);
2847 if (!txq->meta || !txq->cmd)
2848 goto out_free_arrays;
2850 len = sizeof(struct il_device_cmd);
2851 for (i = 0; i < actual_slots; i++) {
2852 /* only happens for cmd queue */
2854 len = IL_MAX_CMD_SIZE;
2856 txq->cmd[i] = kmalloc(len, GFP_KERNEL);
2861 /* Alloc driver data array and TFD circular buffer */
2862 ret = il_tx_queue_alloc(il, txq, txq_id);
2866 txq->need_update = 0;
2869 * For the default queues 0-3, set up the swq_id
2870 * already -- all others need to get one later
2871 * (if they need one at all).
2874 il_set_swq_id(txq, txq_id, txq_id);
2876 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
2877 * il_queue_inc_wrap and il_queue_dec_wrap are broken. */
2878 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
2880 /* Initialize queue's high/low-water marks, and head/tail idxes */
2881 il_queue_init(il, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
2883 /* Tell device where to find queue */
2884 il->cfg->ops->lib->txq_init(il, txq);
2888 for (i = 0; i < actual_slots; i++)
2896 EXPORT_SYMBOL(il_tx_queue_init);
2899 il_tx_queue_reset(struct il_priv *il, struct il_tx_queue *txq, int slots_num,
2902 int actual_slots = slots_num;
2904 if (txq_id == il->cmd_queue)
2907 memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots);
2909 txq->need_update = 0;
2911 /* Initialize queue's high/low-water marks, and head/tail idxes */
2912 il_queue_init(il, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
2914 /* Tell device where to find queue */
2915 il->cfg->ops->lib->txq_init(il, txq);
2917 EXPORT_SYMBOL(il_tx_queue_reset);
2919 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
2922 * il_enqueue_hcmd - enqueue a uCode command
2923 * @il: device ilate data point
2924 * @cmd: a point to the ucode command structure
2926 * The function returns < 0 values to indicate the operation is
2927 * failed. On success, it turns the idx (> 0) of command in the
2931 il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd)
2933 struct il_tx_queue *txq = &il->txq[il->cmd_queue];
2934 struct il_queue *q = &txq->q;
2935 struct il_device_cmd *out_cmd;
2936 struct il_cmd_meta *out_meta;
2937 dma_addr_t phys_addr;
2938 unsigned long flags;
2943 cmd->len = il->cfg->ops->utils->get_hcmd_size(cmd->id, cmd->len);
2944 fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr));
2946 /* If any of the command structures end up being larger than
2947 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
2948 * we will need to increase the size of the TFD entries
2949 * Also, check to see if command buffer should not exceed the size
2950 * of device_cmd and max_cmd_size. */
2951 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
2952 !(cmd->flags & CMD_SIZE_HUGE));
2953 BUG_ON(fix_size > IL_MAX_CMD_SIZE);
2955 if (il_is_rfkill(il) || il_is_ctkill(il)) {
2956 IL_WARN("Not sending command - %s KILL\n",
2957 il_is_rfkill(il) ? "RF" : "CT");
2961 spin_lock_irqsave(&il->hcmd_lock, flags);
2963 if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
2964 spin_unlock_irqrestore(&il->hcmd_lock, flags);
2966 IL_ERR("Restarting adapter due to command queue full\n");
2967 queue_work(il->workqueue, &il->restart);
2971 idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE);
2972 out_cmd = txq->cmd[idx];
2973 out_meta = &txq->meta[idx];
2975 if (WARN_ON(out_meta->flags & CMD_MAPPED)) {
2976 spin_unlock_irqrestore(&il->hcmd_lock, flags);
2980 memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */
2981 out_meta->flags = cmd->flags | CMD_MAPPED;
2982 if (cmd->flags & CMD_WANT_SKB)
2983 out_meta->source = cmd;
2984 if (cmd->flags & CMD_ASYNC)
2985 out_meta->callback = cmd->callback;
2987 out_cmd->hdr.cmd = cmd->id;
2988 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
2990 /* At this point, the out_cmd now has all of the incoming cmd
2993 out_cmd->hdr.flags = 0;
2994 out_cmd->hdr.sequence =
2995 cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr));
2996 if (cmd->flags & CMD_SIZE_HUGE)
2997 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
2998 len = sizeof(struct il_device_cmd);
2999 if (idx == TFD_CMD_SLOTS)
3000 len = IL_MAX_CMD_SIZE;
3002 #ifdef CONFIG_IWLEGACY_DEBUG
3003 switch (out_cmd->hdr.cmd) {
3004 case C_TX_LINK_QUALITY_CMD:
3006 D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, "
3007 "%d bytes at %d[%d]:%d\n",
3008 il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd,
3009 le16_to_cpu(out_cmd->hdr.sequence), fix_size,
3010 q->write_ptr, idx, il->cmd_queue);
3013 D_HC("Sending command %s (#%x), seq: 0x%04X, "
3014 "%d bytes at %d[%d]:%d\n",
3015 il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd,
3016 le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr,
3017 idx, il->cmd_queue);
3020 txq->need_update = 1;
3022 if (il->cfg->ops->lib->txq_update_byte_cnt_tbl)
3023 /* Set up entry in queue's byte count circular buffer */
3024 il->cfg->ops->lib->txq_update_byte_cnt_tbl(il, txq, 0);
3027 pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size,
3028 PCI_DMA_BIDIRECTIONAL);
3029 dma_unmap_addr_set(out_meta, mapping, phys_addr);
3030 dma_unmap_len_set(out_meta, len, fix_size);
3032 il->cfg->ops->lib->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size,
3033 1, U32_PAD(cmd->len));
3035 /* Increment and update queue's write idx */
3036 q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd);
3037 il_txq_update_write_ptr(il, txq);
3039 spin_unlock_irqrestore(&il->hcmd_lock, flags);
3044 * il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd
3046 * When FW advances 'R' idx, all entries between old and new 'R' idx
3047 * need to be reclaimed. As result, some free space forms. If there is
3048 * enough free space (> low mark), wake the stack that feeds us.
3051 il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx)
3053 struct il_tx_queue *txq = &il->txq[txq_id];
3054 struct il_queue *q = &txq->q;
3057 if (idx >= q->n_bd || il_queue_used(q, idx) == 0) {
3058 IL_ERR("Read idx for DMA queue txq id (%d), idx %d, "
3059 "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd,
3060 q->write_ptr, q->read_ptr);
3064 for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx;
3065 q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3068 IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx,
3069 q->write_ptr, q->read_ptr);
3070 queue_work(il->workqueue, &il->restart);
3077 * il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3078 * @rxb: Rx buffer to reclaim
3080 * If an Rx buffer has an async callback associated with it the callback
3081 * will be executed. The attached skb (if present) will only be freed
3082 * if the callback returns 1
3085 il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb)
3087 struct il_rx_pkt *pkt = rxb_addr(rxb);
3088 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3089 int txq_id = SEQ_TO_QUEUE(sequence);
3090 int idx = SEQ_TO_IDX(sequence);
3092 bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3093 struct il_device_cmd *cmd;
3094 struct il_cmd_meta *meta;
3095 struct il_tx_queue *txq = &il->txq[il->cmd_queue];
3096 unsigned long flags;
3098 /* If a Tx command is being handled and it isn't in the actual
3099 * command queue then there a command routing bug has been introduced
3100 * in the queue management code. */
3102 (txq_id != il->cmd_queue,
3103 "wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n",
3104 txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr,
3105 il->txq[il->cmd_queue].q.write_ptr)) {
3106 il_print_hex_error(il, pkt, 32);
3110 cmd_idx = il_get_cmd_idx(&txq->q, idx, huge);
3111 cmd = txq->cmd[cmd_idx];
3112 meta = &txq->meta[cmd_idx];
3114 txq->time_stamp = jiffies;
3116 pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping),
3117 dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL);
3119 /* Input error checking is done when commands are added to queue. */
3120 if (meta->flags & CMD_WANT_SKB) {
3121 meta->source->reply_page = (unsigned long)rxb_addr(rxb);
3123 } else if (meta->callback)
3124 meta->callback(il, cmd, pkt);
3126 spin_lock_irqsave(&il->hcmd_lock, flags);
3128 il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx);
3130 if (!(meta->flags & CMD_ASYNC)) {
3131 clear_bit(S_HCMD_ACTIVE, &il->status);
3132 D_INFO("Clearing HCMD_ACTIVE for command %s\n",
3133 il_get_cmd_string(cmd->hdr.cmd));
3134 wake_up(&il->wait_command_queue);
3137 /* Mark as unmapped */
3140 spin_unlock_irqrestore(&il->hcmd_lock, flags);
3142 EXPORT_SYMBOL(il_tx_cmd_complete);
3144 MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
3145 MODULE_VERSION(IWLWIFI_VERSION);
3146 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
3147 MODULE_LICENSE("GPL");
3150 * set bt_coex_active to true, uCode will do kill/defer
3151 * every time the priority line is asserted (BT is sending signals on the
3152 * priority line in the PCIx).
3153 * set bt_coex_active to false, uCode will ignore the BT activity and
3154 * perform the normal operation
3156 * User might experience transmit issue on some platform due to WiFi/BT
3157 * co-exist problem. The possible behaviors are:
3158 * Able to scan and finding all the available AP
3159 * Not able to associate with any AP
3160 * On those platforms, WiFi communication can be restored by set
3161 * "bt_coex_active" module parameter to "false"
3163 * default: bt_coex_active = true (BT_COEX_ENABLE)
3165 static bool bt_coex_active = true;
3166 module_param(bt_coex_active, bool, S_IRUGO);
3167 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
3170 EXPORT_SYMBOL(il_debug_level);
3172 const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
3173 EXPORT_SYMBOL(il_bcast_addr);
3175 /* This function both allocates and initializes hw and il. */
3176 struct ieee80211_hw *
3177 il_alloc_all(struct il_cfg *cfg)
3180 /* mac80211 allocates memory for this device instance, including
3181 * space for this driver's ilate structure */
3182 struct ieee80211_hw *hw;
3184 hw = ieee80211_alloc_hw(sizeof(struct il_priv),
3185 cfg->ops->ieee80211_ops);
3187 pr_err("%s: Can not allocate network device\n", cfg->name);
3197 EXPORT_SYMBOL(il_alloc_all);
3199 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
3200 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
3202 il_init_ht_hw_capab(const struct il_priv *il,
3203 struct ieee80211_sta_ht_cap *ht_info,
3204 enum ieee80211_band band)
3206 u16 max_bit_rate = 0;
3207 u8 rx_chains_num = il->hw_params.rx_chains_num;
3208 u8 tx_chains_num = il->hw_params.tx_chains_num;
3211 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
3213 ht_info->ht_supported = true;
3215 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
3216 max_bit_rate = MAX_BIT_RATE_20_MHZ;
3217 if (il->hw_params.ht40_channel & BIT(band)) {
3218 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
3219 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
3220 ht_info->mcs.rx_mask[4] = 0x01;
3221 max_bit_rate = MAX_BIT_RATE_40_MHZ;
3224 if (il->cfg->mod_params->amsdu_size_8K)
3225 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
3227 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
3228 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
3230 ht_info->mcs.rx_mask[0] = 0xFF;
3231 if (rx_chains_num >= 2)
3232 ht_info->mcs.rx_mask[1] = 0xFF;
3233 if (rx_chains_num >= 3)
3234 ht_info->mcs.rx_mask[2] = 0xFF;
3236 /* Highest supported Rx data rate */
3237 max_bit_rate *= rx_chains_num;
3238 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
3239 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
3241 /* Tx MCS capabilities */
3242 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3243 if (tx_chains_num != rx_chains_num) {
3244 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
3245 ht_info->mcs.tx_params |=
3247 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
3252 * il_init_geos - Initialize mac80211's geo/channel info based from eeprom
3255 il_init_geos(struct il_priv *il)
3257 struct il_channel_info *ch;
3258 struct ieee80211_supported_band *sband;
3259 struct ieee80211_channel *channels;
3260 struct ieee80211_channel *geo_ch;
3261 struct ieee80211_rate *rates;
3263 s8 max_tx_power = 0;
3265 if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
3266 il->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
3267 D_INFO("Geography modes already initialized.\n");
3268 set_bit(S_GEO_CONFIGURED, &il->status);
3273 kzalloc(sizeof(struct ieee80211_channel) * il->channel_count,
3279 kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY),
3286 /* 5.2GHz channels start after the 2.4GHz channels */
3287 sband = &il->bands[IEEE80211_BAND_5GHZ];
3288 sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)];
3290 sband->bitrates = &rates[IL_FIRST_OFDM_RATE];
3291 sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE;
3293 if (il->cfg->sku & IL_SKU_N)
3294 il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ);
3296 sband = &il->bands[IEEE80211_BAND_2GHZ];
3297 sband->channels = channels;
3299 sband->bitrates = rates;
3300 sband->n_bitrates = RATE_COUNT_LEGACY;
3302 if (il->cfg->sku & IL_SKU_N)
3303 il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ);
3305 il->ieee_channels = channels;
3306 il->ieee_rates = rates;
3308 for (i = 0; i < il->channel_count; i++) {
3309 ch = &il->channel_info[i];
3311 if (!il_is_channel_valid(ch))
3314 sband = &il->bands[ch->band];
3316 geo_ch = &sband->channels[sband->n_channels++];
3318 geo_ch->center_freq =
3319 ieee80211_channel_to_frequency(ch->channel, ch->band);
3320 geo_ch->max_power = ch->max_power_avg;
3321 geo_ch->max_antenna_gain = 0xff;
3322 geo_ch->hw_value = ch->channel;
3324 if (il_is_channel_valid(ch)) {
3325 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
3326 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
3328 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
3329 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
3331 if (ch->flags & EEPROM_CHANNEL_RADAR)
3332 geo_ch->flags |= IEEE80211_CHAN_RADAR;
3334 geo_ch->flags |= ch->ht40_extension_channel;
3336 if (ch->max_power_avg > max_tx_power)
3337 max_tx_power = ch->max_power_avg;
3339 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
3342 D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel,
3343 geo_ch->center_freq,
3344 il_is_channel_a_band(ch) ? "5.2" : "2.4",
3346 flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid",
3350 il->tx_power_device_lmt = max_tx_power;
3351 il->tx_power_user_lmt = max_tx_power;
3352 il->tx_power_next = max_tx_power;
3354 if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 &&
3355 (il->cfg->sku & IL_SKU_A)) {
3356 IL_INFO("Incorrectly detected BG card as ABG. "
3357 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
3358 il->pci_dev->device, il->pci_dev->subsystem_device);
3359 il->cfg->sku &= ~IL_SKU_A;
3362 IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n",
3363 il->bands[IEEE80211_BAND_2GHZ].n_channels,
3364 il->bands[IEEE80211_BAND_5GHZ].n_channels);
3366 set_bit(S_GEO_CONFIGURED, &il->status);
3370 EXPORT_SYMBOL(il_init_geos);
3373 * il_free_geos - undo allocations in il_init_geos
3376 il_free_geos(struct il_priv *il)
3378 kfree(il->ieee_channels);
3379 kfree(il->ieee_rates);
3380 clear_bit(S_GEO_CONFIGURED, &il->status);
3382 EXPORT_SYMBOL(il_free_geos);
3385 il_is_channel_extension(struct il_priv *il, enum ieee80211_band band,
3386 u16 channel, u8 extension_chan_offset)
3388 const struct il_channel_info *ch_info;
3390 ch_info = il_get_channel_info(il, band, channel);
3391 if (!il_is_channel_valid(ch_info))
3394 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
3396 ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS);
3397 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
3399 ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS);
3405 il_is_ht40_tx_allowed(struct il_priv *il, struct il_rxon_context *ctx,
3406 struct ieee80211_sta_ht_cap *ht_cap)
3408 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
3412 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
3413 * the bit will not set if it is pure 40MHz case
3415 if (ht_cap && !ht_cap->ht_supported)
3418 #ifdef CONFIG_IWLEGACY_DEBUGFS
3419 if (il->disable_ht40)
3423 return il_is_channel_extension(il, il->band,
3424 le16_to_cpu(ctx->staging.channel),
3425 ctx->ht.extension_chan_offset);
3427 EXPORT_SYMBOL(il_is_ht40_tx_allowed);
3430 il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
3436 * If mac80211 hasn't given us a beacon interval, program
3437 * the default into the device.
3440 return DEFAULT_BEACON_INTERVAL;
3443 * If the beacon interval we obtained from the peer
3444 * is too large, we'll have to wake up more often
3445 * (and in IBSS case, we'll beacon too much)
3447 * For example, if max_beacon_val is 4096, and the
3448 * requested beacon interval is 7000, we'll have to
3449 * use 3500 to be able to wake up on the beacons.
3451 * This could badly influence beacon detection stats.
3454 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
3455 new_val = beacon_val / beacon_factor;
3458 new_val = max_beacon_val;
3464 il_send_rxon_timing(struct il_priv *il, struct il_rxon_context *ctx)
3467 s32 interval_tm, rem;
3468 struct ieee80211_conf *conf = NULL;
3470 struct ieee80211_vif *vif = ctx->vif;
3472 conf = &il->hw->conf;
3474 lockdep_assert_held(&il->mutex);
3476 memset(&ctx->timing, 0, sizeof(struct il_rxon_time_cmd));
3478 ctx->timing.timestamp = cpu_to_le64(il->timestamp);
3479 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
3481 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
3484 * TODO: For IBSS we need to get atim_win from mac80211,
3485 * for now just always use 0
3487 ctx->timing.atim_win = 0;
3490 il_adjust_beacon_interval(beacon_int,
3491 il->hw_params.max_beacon_itrvl *
3493 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
3495 tsf = il->timestamp; /* tsf is modifed by do_div: copy it */
3496 interval_tm = beacon_int * TIME_UNIT;
3497 rem = do_div(tsf, interval_tm);
3498 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
3500 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1;
3502 D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
3503 le16_to_cpu(ctx->timing.beacon_interval),
3504 le32_to_cpu(ctx->timing.beacon_init_val),
3505 le16_to_cpu(ctx->timing.atim_win));
3507 return il_send_cmd_pdu(il, ctx->rxon_timing_cmd, sizeof(ctx->timing),
3510 EXPORT_SYMBOL(il_send_rxon_timing);
3513 il_set_rxon_hwcrypto(struct il_priv *il, struct il_rxon_context *ctx,
3516 struct il_rxon_cmd *rxon = &ctx->staging;
3519 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
3521 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
3524 EXPORT_SYMBOL(il_set_rxon_hwcrypto);
3526 /* validate RXON structure is valid */
3528 il_check_rxon_cmd(struct il_priv *il, struct il_rxon_context *ctx)
3530 struct il_rxon_cmd *rxon = &ctx->staging;
3533 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
3534 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
3535 IL_WARN("check 2.4G: wrong narrow\n");
3538 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
3539 IL_WARN("check 2.4G: wrong radar\n");
3543 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
3544 IL_WARN("check 5.2G: not short slot!\n");
3547 if (rxon->flags & RXON_FLG_CCK_MSK) {
3548 IL_WARN("check 5.2G: CCK!\n");
3552 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
3553 IL_WARN("mac/bssid mcast!\n");
3557 /* make sure basic rates 6Mbps and 1Mbps are supported */
3558 if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 &&
3559 (rxon->cck_basic_rates & RATE_1M_MASK) == 0) {
3560 IL_WARN("neither 1 nor 6 are basic\n");
3564 if (le16_to_cpu(rxon->assoc_id) > 2007) {
3565 IL_WARN("aid > 2007\n");
3569 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) ==
3570 (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
3571 IL_WARN("CCK and short slot\n");
3575 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) ==
3576 (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
3577 IL_WARN("CCK and auto detect");
3582 flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) ==
3583 RXON_FLG_TGG_PROTECT_MSK) {
3584 IL_WARN("TGg but no auto-detect\n");
3589 IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel));
3592 IL_ERR("Invalid RXON\n");
3597 EXPORT_SYMBOL(il_check_rxon_cmd);
3600 * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
3601 * @il: staging_rxon is compared to active_rxon
3603 * If the RXON structure is changing enough to require a new tune,
3604 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
3605 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
3608 il_full_rxon_required(struct il_priv *il, struct il_rxon_context *ctx)
3610 const struct il_rxon_cmd *staging = &ctx->staging;
3611 const struct il_rxon_cmd *active = &ctx->active;
3615 D_INFO("need full RXON - " #cond "\n"); \
3619 #define CHK_NEQ(c1, c2) \
3620 if ((c1) != (c2)) { \
3621 D_INFO("need full RXON - " \
3622 #c1 " != " #c2 " - %d != %d\n", \
3627 /* These items are only settable from the full RXON command */
3628 CHK(!il_is_associated_ctx(ctx));
3629 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
3630 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
3631 CHK(compare_ether_addr
3632 (staging->wlap_bssid_addr, active->wlap_bssid_addr));
3633 CHK_NEQ(staging->dev_type, active->dev_type);
3634 CHK_NEQ(staging->channel, active->channel);
3635 CHK_NEQ(staging->air_propagation, active->air_propagation);
3636 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
3637 active->ofdm_ht_single_stream_basic_rates);
3638 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
3639 active->ofdm_ht_dual_stream_basic_rates);
3640 CHK_NEQ(staging->assoc_id, active->assoc_id);
3642 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
3643 * be updated with the RXON_ASSOC command -- however only some
3644 * flag transitions are allowed using RXON_ASSOC */
3646 /* Check if we are not switching bands */
3647 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
3648 active->flags & RXON_FLG_BAND_24G_MSK);
3650 /* Check if we are switching association toggle */
3651 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
3652 active->filter_flags & RXON_FILTER_ASSOC_MSK);
3659 EXPORT_SYMBOL(il_full_rxon_required);
3662 il_get_lowest_plcp(struct il_priv *il, struct il_rxon_context *ctx)
3665 * Assign the lowest rate -- should really get this from
3666 * the beacon skb from mac80211.
3668 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
3669 return RATE_1M_PLCP;
3671 return RATE_6M_PLCP;
3673 EXPORT_SYMBOL(il_get_lowest_plcp);
3676 _il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf,
3677 struct il_rxon_context *ctx)
3679 struct il_rxon_cmd *rxon = &ctx->staging;
3681 if (!ctx->ht.enabled) {
3683 ~(RXON_FLG_CHANNEL_MODE_MSK |
3684 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK
3685 | RXON_FLG_HT_PROT_MSK);
3690 cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
3692 /* Set up channel bandwidth:
3693 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
3694 /* clear the HT channel mode before set the mode */
3696 ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
3697 if (il_is_ht40_tx_allowed(il, ctx, NULL)) {
3699 if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
3700 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
3701 /* Note: control channel is opposite of extension channel */
3702 switch (ctx->ht.extension_chan_offset) {
3703 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3705 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
3707 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3708 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
3712 /* Note: control channel is opposite of extension channel */
3713 switch (ctx->ht.extension_chan_offset) {
3714 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3716 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
3717 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
3719 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3720 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
3721 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
3723 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3725 /* channel location only valid if in Mixed mode */
3726 IL_ERR("invalid extension channel offset\n");
3731 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
3734 if (il->cfg->ops->hcmd->set_rxon_chain)
3735 il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
3737 D_ASSOC("rxon flags 0x%X operation mode :0x%X "
3738 "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags),
3739 ctx->ht.protection, ctx->ht.extension_chan_offset);
3743 il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf)
3745 _il_set_rxon_ht(il, ht_conf, &il->ctx);
3747 EXPORT_SYMBOL(il_set_rxon_ht);
3749 /* Return valid, unused, channel for a passive scan to reset the RF */
3751 il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band)
3753 const struct il_channel_info *ch_info;
3758 if (band == IEEE80211_BAND_5GHZ) {
3760 max = il->channel_count;
3766 for (i = min; i < max; i++) {
3767 channel = il->channel_info[i].channel;
3768 if (channel == le16_to_cpu(il->ctx.staging.channel))
3771 ch_info = il_get_channel_info(il, band, channel);
3772 if (il_is_channel_valid(ch_info))
3778 EXPORT_SYMBOL(il_get_single_channel_number);
3781 * il_set_rxon_channel - Set the band and channel values in staging RXON
3782 * @ch: requested channel as a pointer to struct ieee80211_channel
3784 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
3785 * in the staging RXON flag structure based on the ch->band
3788 il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch,
3789 struct il_rxon_context *ctx)
3791 enum ieee80211_band band = ch->band;
3792 u16 channel = ch->hw_value;
3794 if (le16_to_cpu(ctx->staging.channel) == channel && il->band == band)
3797 ctx->staging.channel = cpu_to_le16(channel);
3798 if (band == IEEE80211_BAND_5GHZ)
3799 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
3801 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
3805 D_INFO("Staging channel set to %d [%d]\n", channel, band);
3809 EXPORT_SYMBOL(il_set_rxon_channel);
3812 il_set_flags_for_band(struct il_priv *il, struct il_rxon_context *ctx,
3813 enum ieee80211_band band, struct ieee80211_vif *vif)
3815 if (band == IEEE80211_BAND_5GHZ) {
3816 ctx->staging.flags &=
3817 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
3819 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3821 /* Copied from il_post_associate() */
3822 if (vif && vif->bss_conf.use_short_slot)
3823 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3825 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3827 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
3828 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
3829 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
3832 EXPORT_SYMBOL(il_set_flags_for_band);
3835 * initialize rxon structure with default values from eeprom
3838 il_connection_init_rx_config(struct il_priv *il, struct il_rxon_context *ctx)
3840 const struct il_channel_info *ch_info;
3842 memset(&ctx->staging, 0, sizeof(ctx->staging));
3845 ctx->staging.dev_type = ctx->unused_devtype;
3847 switch (ctx->vif->type) {
3849 case NL80211_IFTYPE_STATION:
3850 ctx->staging.dev_type = ctx->station_devtype;
3851 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
3854 case NL80211_IFTYPE_ADHOC:
3855 ctx->staging.dev_type = ctx->ibss_devtype;
3856 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
3857 ctx->staging.filter_flags =
3858 RXON_FILTER_BCON_AWARE_MSK |
3859 RXON_FILTER_ACCEPT_GRP_MSK;
3863 IL_ERR("Unsupported interface type %d\n",
3869 /* TODO: Figure out when short_preamble would be set and cache from
3871 if (!hw_to_local(il->hw)->short_preamble)
3872 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3874 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3878 il_get_channel_info(il, il->band, le16_to_cpu(ctx->active.channel));
3881 ch_info = &il->channel_info[0];
3883 ctx->staging.channel = cpu_to_le16(ch_info->channel);
3884 il->band = ch_info->band;
3886 il_set_flags_for_band(il, ctx, il->band, ctx->vif);
3888 ctx->staging.ofdm_basic_rates =
3889 (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
3890 ctx->staging.cck_basic_rates =
3891 (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
3893 /* clear both MIX and PURE40 mode flag */
3894 ctx->staging.flags &=
3895 ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40);
3897 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
3899 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
3900 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
3902 EXPORT_SYMBOL(il_connection_init_rx_config);
3905 il_set_rate(struct il_priv *il)
3907 const struct ieee80211_supported_band *hw = NULL;
3908 struct ieee80211_rate *rate;
3911 hw = il_get_hw_mode(il, il->band);
3913 IL_ERR("Failed to set rate: unable to get hw mode\n");
3917 il->active_rate = 0;
3919 for (i = 0; i < hw->n_bitrates; i++) {
3920 rate = &(hw->bitrates[i]);
3921 if (rate->hw_value < RATE_COUNT_LEGACY)
3922 il->active_rate |= (1 << rate->hw_value);
3925 D_RATE("Set active_rate = %0x\n", il->active_rate);
3927 il->ctx.staging.cck_basic_rates =
3928 (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
3930 il->ctx.staging.ofdm_basic_rates =
3931 (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
3933 EXPORT_SYMBOL(il_set_rate);
3936 il_chswitch_done(struct il_priv *il, bool is_success)
3938 struct il_rxon_context *ctx = &il->ctx;
3940 if (test_bit(S_EXIT_PENDING, &il->status))
3943 if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
3944 ieee80211_chswitch_done(ctx->vif, is_success);
3946 EXPORT_SYMBOL(il_chswitch_done);
3949 il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb)
3951 struct il_rx_pkt *pkt = rxb_addr(rxb);
3952 struct il_csa_notification *csa = &(pkt->u.csa_notif);
3954 struct il_rxon_context *ctx = &il->ctx;
3955 struct il_rxon_cmd *rxon = (void *)&ctx->active;
3957 if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
3960 if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) {
3961 rxon->channel = csa->channel;
3962 ctx->staging.channel = csa->channel;
3963 D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel));
3964 il_chswitch_done(il, true);
3966 IL_ERR("CSA notif (fail) : channel %d\n",
3967 le16_to_cpu(csa->channel));
3968 il_chswitch_done(il, false);
3971 EXPORT_SYMBOL(il_hdl_csa);
3973 #ifdef CONFIG_IWLEGACY_DEBUG
3975 il_print_rx_config_cmd(struct il_priv *il, struct il_rxon_context *ctx)
3977 struct il_rxon_cmd *rxon = &ctx->staging;
3979 D_RADIO("RX CONFIG:\n");
3980 il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3981 D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3982 D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3983 D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags));
3984 D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3985 D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates);
3986 D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3987 D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3988 D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3989 D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3991 EXPORT_SYMBOL(il_print_rx_config_cmd);
3994 * il_irq_handle_error - called for HW or SW error interrupt from card
3997 il_irq_handle_error(struct il_priv *il)
3999 /* Set the FW error flag -- cleared on il_down */
4000 set_bit(S_FW_ERROR, &il->status);
4002 /* Cancel currently queued command. */
4003 clear_bit(S_HCMD_ACTIVE, &il->status);
4005 IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version);
4007 il->cfg->ops->lib->dump_nic_error_log(il);
4008 if (il->cfg->ops->lib->dump_fh)
4009 il->cfg->ops->lib->dump_fh(il, NULL, false);
4010 #ifdef CONFIG_IWLEGACY_DEBUG
4011 if (il_get_debug_level(il) & IL_DL_FW_ERRORS)
4012 il_print_rx_config_cmd(il, &il->ctx);
4015 wake_up(&il->wait_command_queue);
4017 /* Keep the restart process from trying to send host
4018 * commands by clearing the INIT status bit */
4019 clear_bit(S_READY, &il->status);
4021 if (!test_bit(S_EXIT_PENDING, &il->status)) {
4022 IL_DBG(IL_DL_FW_ERRORS,
4023 "Restarting adapter due to uCode error.\n");
4025 if (il->cfg->mod_params->restart_fw)
4026 queue_work(il->workqueue, &il->restart);
4029 EXPORT_SYMBOL(il_irq_handle_error);
4032 il_apm_stop_master(struct il_priv *il)
4036 /* stop device's busmaster DMA activity */
4037 il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
4040 _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
4041 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
4043 IL_WARN("Master Disable Timed Out, 100 usec\n");
4045 D_INFO("stop master\n");
4051 il_apm_stop(struct il_priv *il)
4053 D_INFO("Stop card, put in low power state\n");
4055 /* Stop device's DMA activity */
4056 il_apm_stop_master(il);
4058 /* Reset the entire device */
4059 il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
4064 * Clear "initialization complete" bit to move adapter from
4065 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
4067 il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
4069 EXPORT_SYMBOL(il_apm_stop);
4072 * Start up NIC's basic functionality after it has been reset
4073 * (e.g. after platform boot, or shutdown via il_apm_stop())
4074 * NOTE: This does not load uCode nor start the embedded processor
4077 il_apm_init(struct il_priv *il)
4082 D_INFO("Init card's basic functions\n");
4085 * Use "set_bit" below rather than "write", to preserve any hardware
4086 * bits already set by default after reset.
4089 /* Disable L0S exit timer (platform NMI Work/Around) */
4090 il_set_bit(il, CSR_GIO_CHICKEN_BITS,
4091 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
4094 * Disable L0s without affecting L1;
4095 * don't wait for ICH L0s (ICH bug W/A)
4097 il_set_bit(il, CSR_GIO_CHICKEN_BITS,
4098 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
4100 /* Set FH wait threshold to maximum (HW error during stress W/A) */
4101 il_set_bit(il, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
4104 * Enable HAP INTA (interrupt from management bus) to
4105 * wake device's PCI Express link L1a -> L0s
4106 * NOTE: This is no-op for 3945 (non-existent bit)
4108 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
4109 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
4112 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
4113 * Check if BIOS (or OS) enabled L1-ASPM on this device.
4114 * If so (likely), disable L0S, so device moves directly L0->L1;
4115 * costs negligible amount of power savings.
4116 * If not (unlikely), enable L0S, so there is at least some
4117 * power savings, even without L1.
4119 if (il->cfg->base_params->set_l0s) {
4120 lctl = il_pcie_link_ctl(il);
4121 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
4122 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
4123 /* L1-ASPM enabled; disable(!) L0S */
4124 il_set_bit(il, CSR_GIO_REG,
4125 CSR_GIO_REG_VAL_L0S_ENABLED);
4126 D_POWER("L1 Enabled; Disabling L0S\n");
4128 /* L1-ASPM disabled; enable(!) L0S */
4129 il_clear_bit(il, CSR_GIO_REG,
4130 CSR_GIO_REG_VAL_L0S_ENABLED);
4131 D_POWER("L1 Disabled; Enabling L0S\n");
4135 /* Configure analog phase-lock-loop before activating to D0A */
4136 if (il->cfg->base_params->pll_cfg_val)
4137 il_set_bit(il, CSR_ANA_PLL_CFG,
4138 il->cfg->base_params->pll_cfg_val);
4141 * Set "initialization complete" bit to move adapter from
4142 * D0U* --> D0A* (powered-up active) state.
4144 il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
4147 * Wait for clock stabilization; once stabilized, access to
4148 * device-internal resources is supported, e.g. il_wr_prph()
4149 * and accesses to uCode SRAM.
4152 _il_poll_bit(il, CSR_GP_CNTRL,
4153 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
4154 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
4156 D_INFO("Failed to init the card\n");
4161 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
4162 * BSM (Boostrap State Machine) is only in 3945 and 4965.
4164 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
4165 * do not disable clocks. This preserves any hardware bits already
4166 * set by default in "CLK_CTRL_REG" after reset.
4168 if (il->cfg->base_params->use_bsm)
4169 il_wr_prph(il, APMG_CLK_EN_REG,
4170 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
4172 il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
4175 /* Disable L1-Active */
4176 il_set_bits_prph(il, APMG_PCIDEV_STT_REG,
4177 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
4182 EXPORT_SYMBOL(il_apm_init);
4185 il_set_tx_power(struct il_priv *il, s8 tx_power, bool force)
4190 struct il_rxon_context *ctx = &il->ctx;
4192 lockdep_assert_held(&il->mutex);
4194 if (il->tx_power_user_lmt == tx_power && !force)
4197 if (!il->cfg->ops->lib->send_tx_power)
4200 /* 0 dBm mean 1 milliwatt */
4202 IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power);
4206 if (tx_power > il->tx_power_device_lmt) {
4207 IL_WARN("Requested user TXPOWER %d above upper limit %d.\n",
4208 tx_power, il->tx_power_device_lmt);
4212 if (!il_is_ready_rf(il))
4215 /* scan complete and commit_rxon use tx_power_next value,
4216 * it always need to be updated for newest request */
4217 il->tx_power_next = tx_power;
4219 /* do not set tx power when scanning or channel changing */
4220 defer = test_bit(S_SCANNING, &il->status) ||
4221 memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
4222 if (defer && !force) {
4223 D_INFO("Deferring tx power set\n");
4227 prev_tx_power = il->tx_power_user_lmt;
4228 il->tx_power_user_lmt = tx_power;
4230 ret = il->cfg->ops->lib->send_tx_power(il);
4232 /* if fail to set tx_power, restore the orig. tx power */
4234 il->tx_power_user_lmt = prev_tx_power;
4235 il->tx_power_next = prev_tx_power;
4239 EXPORT_SYMBOL(il_set_tx_power);
4242 il_send_bt_config(struct il_priv *il)
4244 struct il_bt_cmd bt_cmd = {
4245 .lead_time = BT_LEAD_TIME_DEF,
4246 .max_kill = BT_MAX_KILL_DEF,
4251 if (!bt_coex_active)
4252 bt_cmd.flags = BT_COEX_DISABLE;
4254 bt_cmd.flags = BT_COEX_ENABLE;
4256 D_INFO("BT coex %s\n",
4257 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
4259 if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd))
4260 IL_ERR("failed to send BT Coex Config\n");
4262 EXPORT_SYMBOL(il_send_bt_config);
4265 il_send_stats_request(struct il_priv *il, u8 flags, bool clear)
4267 struct il_stats_cmd stats_cmd = {
4268 .configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0,
4271 if (flags & CMD_ASYNC)
4272 return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd),
4275 return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd),
4278 EXPORT_SYMBOL(il_send_stats_request);
4281 il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb)
4283 #ifdef CONFIG_IWLEGACY_DEBUG
4284 struct il_rx_pkt *pkt = rxb_addr(rxb);
4285 struct il_sleep_notification *sleep = &(pkt->u.sleep_notif);
4286 D_RX("sleep mode: %d, src: %d\n",
4287 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
4290 EXPORT_SYMBOL(il_hdl_pm_sleep);
4293 il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb)
4295 struct il_rx_pkt *pkt = rxb_addr(rxb);
4296 u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK;
4297 D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len,
4298 il_get_cmd_string(pkt->hdr.cmd));
4299 il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len);
4301 EXPORT_SYMBOL(il_hdl_pm_debug_stats);
4304 il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb)
4306 struct il_rx_pkt *pkt = rxb_addr(rxb);
4308 IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) "
4309 "seq 0x%04X ser 0x%08X\n",
4310 le32_to_cpu(pkt->u.err_resp.error_type),
4311 il_get_cmd_string(pkt->u.err_resp.cmd_id),
4312 pkt->u.err_resp.cmd_id,
4313 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
4314 le32_to_cpu(pkt->u.err_resp.error_info));
4316 EXPORT_SYMBOL(il_hdl_error);
4319 il_clear_isr_stats(struct il_priv *il)
4321 memset(&il->isr_stats, 0, sizeof(il->isr_stats));
4325 il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
4326 const struct ieee80211_tx_queue_params *params)
4328 struct il_priv *il = hw->priv;
4329 unsigned long flags;
4332 D_MAC80211("enter\n");
4334 if (!il_is_ready_rf(il)) {
4335 D_MAC80211("leave - RF not ready\n");
4339 if (queue >= AC_NUM) {
4340 D_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4344 q = AC_NUM - 1 - queue;
4346 spin_lock_irqsave(&il->lock, flags);
4348 il->ctx.qos_data.def_qos_parm.ac[q].cw_min =
4349 cpu_to_le16(params->cw_min);
4350 il->ctx.qos_data.def_qos_parm.ac[q].cw_max =
4351 cpu_to_le16(params->cw_max);
4352 il->ctx.qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4353 il->ctx.qos_data.def_qos_parm.ac[q].edca_txop =
4354 cpu_to_le16((params->txop * 32));
4356 il->ctx.qos_data.def_qos_parm.ac[q].reserved1 = 0;
4358 spin_unlock_irqrestore(&il->lock, flags);
4360 D_MAC80211("leave\n");
4363 EXPORT_SYMBOL(il_mac_conf_tx);
4366 il_mac_tx_last_beacon(struct ieee80211_hw *hw)
4368 struct il_priv *il = hw->priv;
4370 return il->ibss_manager == IL_IBSS_MANAGER;
4372 EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon);
4375 il_set_mode(struct il_priv *il, struct il_rxon_context *ctx)
4377 il_connection_init_rx_config(il, ctx);
4379 if (il->cfg->ops->hcmd->set_rxon_chain)
4380 il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
4382 return il_commit_rxon(il, ctx);
4386 il_setup_interface(struct il_priv *il, struct il_rxon_context *ctx)
4388 struct ieee80211_vif *vif = ctx->vif;
4391 lockdep_assert_held(&il->mutex);
4394 * This variable will be correct only when there's just
4395 * a single context, but all code using it is for hardware
4396 * that supports only one context.
4398 il->iw_mode = vif->type;
4400 ctx->is_active = true;
4402 err = il_set_mode(il, ctx);
4404 if (!ctx->always_active)
4405 ctx->is_active = false;
4413 il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
4415 struct il_priv *il = hw->priv;
4416 struct il_vif_priv *vif_priv = (void *)vif->drv_priv;
4420 D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr);
4422 mutex_lock(&il->mutex);
4424 if (!il_is_ready_rf(il)) {
4425 IL_WARN("Try to add interface when device not ready\n");
4430 /* check if busy context is exclusive */
4432 (il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type))) {
4437 modes = il->ctx.interface_modes | il->ctx.exclusive_interface_modes;
4438 if (!(modes & BIT(vif->type))) {
4443 vif_priv->ctx = &il->ctx;
4446 err = il_setup_interface(il, &il->ctx);
4449 il->iw_mode = NL80211_IFTYPE_STATION;
4453 mutex_unlock(&il->mutex);
4455 D_MAC80211("leave\n");
4458 EXPORT_SYMBOL(il_mac_add_interface);
4461 il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif,
4464 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
4466 lockdep_assert_held(&il->mutex);
4468 if (il->scan_vif == vif) {
4469 il_scan_cancel_timeout(il, 200);
4470 il_force_scan_end(il);
4474 il_set_mode(il, ctx);
4475 if (!ctx->always_active)
4476 ctx->is_active = false;
4481 il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
4483 struct il_priv *il = hw->priv;
4484 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
4486 D_MAC80211("enter\n");
4488 mutex_lock(&il->mutex);
4490 WARN_ON(ctx->vif != vif);
4493 il_teardown_interface(il, vif, false);
4495 memset(il->bssid, 0, ETH_ALEN);
4496 mutex_unlock(&il->mutex);
4498 D_MAC80211("leave\n");
4501 EXPORT_SYMBOL(il_mac_remove_interface);
4504 il_alloc_txq_mem(struct il_priv *il)
4508 kzalloc(sizeof(struct il_tx_queue) *
4509 il->cfg->base_params->num_of_queues, GFP_KERNEL);
4511 IL_ERR("Not enough memory for txq\n");
4516 EXPORT_SYMBOL(il_alloc_txq_mem);
4519 il_txq_mem(struct il_priv *il)
4524 EXPORT_SYMBOL(il_txq_mem);
4526 #ifdef CONFIG_IWLEGACY_DEBUGFS
4528 #define IL_TRAFFIC_DUMP_SIZE (IL_TRAFFIC_ENTRY_SIZE * IL_TRAFFIC_ENTRIES)
4531 il_reset_traffic_log(struct il_priv *il)
4533 il->tx_traffic_idx = 0;
4534 il->rx_traffic_idx = 0;
4536 memset(il->tx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
4538 memset(il->rx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
4542 il_alloc_traffic_mem(struct il_priv *il)
4544 u32 traffic_size = IL_TRAFFIC_DUMP_SIZE;
4546 if (il_debug_level & IL_DL_TX) {
4547 if (!il->tx_traffic) {
4548 il->tx_traffic = kzalloc(traffic_size, GFP_KERNEL);
4549 if (!il->tx_traffic)
4553 if (il_debug_level & IL_DL_RX) {
4554 if (!il->rx_traffic) {
4555 il->rx_traffic = kzalloc(traffic_size, GFP_KERNEL);
4556 if (!il->rx_traffic)
4560 il_reset_traffic_log(il);
4563 EXPORT_SYMBOL(il_alloc_traffic_mem);
4566 il_free_traffic_mem(struct il_priv *il)
4568 kfree(il->tx_traffic);
4569 il->tx_traffic = NULL;
4571 kfree(il->rx_traffic);
4572 il->rx_traffic = NULL;
4574 EXPORT_SYMBOL(il_free_traffic_mem);
4577 il_dbg_log_tx_data_frame(struct il_priv *il, u16 length,
4578 struct ieee80211_hdr *header)
4583 if (likely(!(il_debug_level & IL_DL_TX)))
4586 if (!il->tx_traffic)
4589 fc = header->frame_control;
4590 if (ieee80211_is_data(fc)) {
4593 IL_TRAFFIC_ENTRY_SIZE) ? IL_TRAFFIC_ENTRY_SIZE : length;
4594 memcpy((il->tx_traffic +
4595 (il->tx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)), header,
4597 il->tx_traffic_idx =
4598 (il->tx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
4601 EXPORT_SYMBOL(il_dbg_log_tx_data_frame);
4604 il_dbg_log_rx_data_frame(struct il_priv *il, u16 length,
4605 struct ieee80211_hdr *header)
4610 if (likely(!(il_debug_level & IL_DL_RX)))
4613 if (!il->rx_traffic)
4616 fc = header->frame_control;
4617 if (ieee80211_is_data(fc)) {
4620 IL_TRAFFIC_ENTRY_SIZE) ? IL_TRAFFIC_ENTRY_SIZE : length;
4621 memcpy((il->rx_traffic +
4622 (il->rx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)), header,
4624 il->rx_traffic_idx =
4625 (il->rx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
4628 EXPORT_SYMBOL(il_dbg_log_rx_data_frame);
4631 il_get_mgmt_string(int cmd)
4634 IL_CMD(MANAGEMENT_ASSOC_REQ);
4635 IL_CMD(MANAGEMENT_ASSOC_RESP);
4636 IL_CMD(MANAGEMENT_REASSOC_REQ);
4637 IL_CMD(MANAGEMENT_REASSOC_RESP);
4638 IL_CMD(MANAGEMENT_PROBE_REQ);
4639 IL_CMD(MANAGEMENT_PROBE_RESP);
4640 IL_CMD(MANAGEMENT_BEACON);
4641 IL_CMD(MANAGEMENT_ATIM);
4642 IL_CMD(MANAGEMENT_DISASSOC);
4643 IL_CMD(MANAGEMENT_AUTH);
4644 IL_CMD(MANAGEMENT_DEAUTH);
4645 IL_CMD(MANAGEMENT_ACTION);
4653 il_get_ctrl_string(int cmd)
4656 IL_CMD(CONTROL_BACK_REQ);
4657 IL_CMD(CONTROL_BACK);
4658 IL_CMD(CONTROL_PSPOLL);
4659 IL_CMD(CONTROL_RTS);
4660 IL_CMD(CONTROL_CTS);
4661 IL_CMD(CONTROL_ACK);
4662 IL_CMD(CONTROL_CFEND);
4663 IL_CMD(CONTROL_CFENDACK);
4671 il_clear_traffic_stats(struct il_priv *il)
4673 memset(&il->tx_stats, 0, sizeof(struct traffic_stats));
4674 memset(&il->rx_stats, 0, sizeof(struct traffic_stats));
4678 * if CONFIG_IWLEGACY_DEBUGFS defined,
4679 * il_update_stats function will
4680 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass
4681 * Use debugFs to display the rx/rx_stats
4682 * if CONFIG_IWLEGACY_DEBUGFS not being defined, then no MGMT and CTRL
4683 * information will be recorded, but DATA pkt still will be recorded
4684 * for the reason of il_led.c need to control the led blinking based on
4685 * number of tx and rx data.
4689 il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len)
4691 struct traffic_stats *stats;
4694 stats = &il->tx_stats;
4696 stats = &il->rx_stats;
4698 if (ieee80211_is_mgmt(fc)) {
4699 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
4700 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
4701 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
4703 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
4704 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
4706 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
4707 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
4709 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
4710 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
4712 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
4713 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
4715 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
4716 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
4718 case cpu_to_le16(IEEE80211_STYPE_BEACON):
4719 stats->mgmt[MANAGEMENT_BEACON]++;
4721 case cpu_to_le16(IEEE80211_STYPE_ATIM):
4722 stats->mgmt[MANAGEMENT_ATIM]++;
4724 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
4725 stats->mgmt[MANAGEMENT_DISASSOC]++;
4727 case cpu_to_le16(IEEE80211_STYPE_AUTH):
4728 stats->mgmt[MANAGEMENT_AUTH]++;
4730 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
4731 stats->mgmt[MANAGEMENT_DEAUTH]++;
4733 case cpu_to_le16(IEEE80211_STYPE_ACTION):
4734 stats->mgmt[MANAGEMENT_ACTION]++;
4737 } else if (ieee80211_is_ctl(fc)) {
4738 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
4739 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
4740 stats->ctrl[CONTROL_BACK_REQ]++;
4742 case cpu_to_le16(IEEE80211_STYPE_BACK):
4743 stats->ctrl[CONTROL_BACK]++;
4745 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
4746 stats->ctrl[CONTROL_PSPOLL]++;
4748 case cpu_to_le16(IEEE80211_STYPE_RTS):
4749 stats->ctrl[CONTROL_RTS]++;
4751 case cpu_to_le16(IEEE80211_STYPE_CTS):
4752 stats->ctrl[CONTROL_CTS]++;
4754 case cpu_to_le16(IEEE80211_STYPE_ACK):
4755 stats->ctrl[CONTROL_ACK]++;
4757 case cpu_to_le16(IEEE80211_STYPE_CFEND):
4758 stats->ctrl[CONTROL_CFEND]++;
4760 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
4761 stats->ctrl[CONTROL_CFENDACK]++;
4767 stats->data_bytes += len;
4770 EXPORT_SYMBOL(il_update_stats);
4774 il_force_reset(struct il_priv *il, bool external)
4776 struct il_force_reset *force_reset;
4778 if (test_bit(S_EXIT_PENDING, &il->status))
4781 force_reset = &il->force_reset;
4782 force_reset->reset_request_count++;
4784 if (force_reset->last_force_reset_jiffies &&
4785 time_after(force_reset->last_force_reset_jiffies +
4786 force_reset->reset_duration, jiffies)) {
4787 D_INFO("force reset rejected\n");
4788 force_reset->reset_reject_count++;
4792 force_reset->reset_success_count++;
4793 force_reset->last_force_reset_jiffies = jiffies;
4796 * if the request is from external(ex: debugfs),
4797 * then always perform the request in regardless the module
4799 * if the request is from internal (uCode error or driver
4800 * detect failure), then fw_restart module parameter
4801 * need to be check before performing firmware reload
4804 if (!external && !il->cfg->mod_params->restart_fw) {
4805 D_INFO("Cancel firmware reload based on "
4806 "module parameter setting\n");
4810 IL_ERR("On demand firmware reload\n");
4812 /* Set the FW error flag -- cleared on il_down */
4813 set_bit(S_FW_ERROR, &il->status);
4814 wake_up(&il->wait_command_queue);
4816 * Keep the restart process from trying to send host
4817 * commands by clearing the INIT status bit
4819 clear_bit(S_READY, &il->status);
4820 queue_work(il->workqueue, &il->restart);
4826 il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4827 enum nl80211_iftype newtype, bool newp2p)
4829 struct il_priv *il = hw->priv;
4830 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
4834 newtype = ieee80211_iftype_p2p(newtype, newp2p);
4836 mutex_lock(&il->mutex);
4838 if (!ctx->vif || !il_is_ready_rf(il)) {
4840 * Huh? But wait ... this can maybe happen when
4841 * we're in the middle of a firmware restart!
4847 modes = ctx->interface_modes | ctx->exclusive_interface_modes;
4848 if (!(modes & BIT(newtype))) {
4853 if ((il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type)) ||
4854 (il->ctx.exclusive_interface_modes & BIT(newtype))) {
4860 il_teardown_interface(il, vif, true);
4861 vif->type = newtype;
4863 err = il_setup_interface(il, ctx);
4866 * We've switched internally, but submitting to the
4867 * device may have failed for some reason. Mask this
4868 * error, because otherwise mac80211 will not switch
4869 * (and set the interface type back) and we'll be
4870 * out of sync with it.
4875 mutex_unlock(&il->mutex);
4878 EXPORT_SYMBOL(il_mac_change_interface);
4881 * On every watchdog tick we check (latest) time stamp. If it does not
4882 * change during timeout period and queue is not empty we reset firmware.
4885 il_check_stuck_queue(struct il_priv *il, int cnt)
4887 struct il_tx_queue *txq = &il->txq[cnt];
4888 struct il_queue *q = &txq->q;
4889 unsigned long timeout;
4892 if (q->read_ptr == q->write_ptr) {
4893 txq->time_stamp = jiffies;
4899 msecs_to_jiffies(il->cfg->base_params->wd_timeout);
4901 if (time_after(jiffies, timeout)) {
4902 IL_ERR("Queue %d stuck for %u ms.\n", q->id,
4903 il->cfg->base_params->wd_timeout);
4904 ret = il_force_reset(il, false);
4905 return (ret == -EAGAIN) ? 0 : 1;
4912 * Making watchdog tick be a quarter of timeout assure we will
4913 * discover the queue hung between timeout and 1.25*timeout
4915 #define IL_WD_TICK(timeout) ((timeout) / 4)
4918 * Watchdog timer callback, we check each tx queue for stuck, if if hung
4919 * we reset the firmware. If everything is fine just rearm the timer.
4922 il_bg_watchdog(unsigned long data)
4924 struct il_priv *il = (struct il_priv *)data;
4926 unsigned long timeout;
4928 if (test_bit(S_EXIT_PENDING, &il->status))
4931 timeout = il->cfg->base_params->wd_timeout;
4935 /* monitor and check for stuck cmd queue */
4936 if (il_check_stuck_queue(il, il->cmd_queue))
4939 /* monitor and check for other stuck queues */
4940 if (il_is_any_associated(il)) {
4941 for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
4942 /* skip as we already checked the command queue */
4943 if (cnt == il->cmd_queue)
4945 if (il_check_stuck_queue(il, cnt))
4950 mod_timer(&il->watchdog,
4951 jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
4953 EXPORT_SYMBOL(il_bg_watchdog);
4956 il_setup_watchdog(struct il_priv *il)
4958 unsigned int timeout = il->cfg->base_params->wd_timeout;
4961 mod_timer(&il->watchdog,
4962 jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
4964 del_timer(&il->watchdog);
4966 EXPORT_SYMBOL(il_setup_watchdog);
4969 * extended beacon time format
4970 * time in usec will be changed into a 32-bit value in extended:internal format
4971 * the extended part is the beacon counts
4972 * the internal part is the time in usec within one beacon interval
4975 il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval)
4979 u32 interval = beacon_interval * TIME_UNIT;
4981 if (!interval || !usec)
4986 interval) & (il_beacon_time_mask_high(il,
4988 beacon_time_tsf_bits) >> il->
4989 hw_params.beacon_time_tsf_bits);
4991 (usec % interval) & il_beacon_time_mask_low(il,
4993 beacon_time_tsf_bits);
4995 return (quot << il->hw_params.beacon_time_tsf_bits) + rem;
4997 EXPORT_SYMBOL(il_usecs_to_beacons);
4999 /* base is usually what we get from ucode with each received frame,
5000 * the same as HW timer counter counting down
5003 il_add_beacon_time(struct il_priv *il, u32 base, u32 addon,
5004 u32 beacon_interval)
5006 u32 base_low = base & il_beacon_time_mask_low(il,
5008 beacon_time_tsf_bits);
5009 u32 addon_low = addon & il_beacon_time_mask_low(il,
5011 beacon_time_tsf_bits);
5012 u32 interval = beacon_interval * TIME_UNIT;
5013 u32 res = (base & il_beacon_time_mask_high(il,
5015 beacon_time_tsf_bits)) +
5016 (addon & il_beacon_time_mask_high(il,
5018 beacon_time_tsf_bits));
5020 if (base_low > addon_low)
5021 res += base_low - addon_low;
5022 else if (base_low < addon_low) {
5023 res += interval + base_low - addon_low;
5024 res += (1 << il->hw_params.beacon_time_tsf_bits);
5026 res += (1 << il->hw_params.beacon_time_tsf_bits);
5028 return cpu_to_le32(res);
5030 EXPORT_SYMBOL(il_add_beacon_time);
5035 il_pci_suspend(struct device *device)
5037 struct pci_dev *pdev = to_pci_dev(device);
5038 struct il_priv *il = pci_get_drvdata(pdev);
5041 * This function is called when system goes into suspend state
5042 * mac80211 will call il_mac_stop() from the mac80211 suspend function
5043 * first but since il_mac_stop() has no knowledge of who the caller is,
5044 * it will not call apm_ops.stop() to stop the DMA operation.
5045 * Calling apm_ops.stop here to make sure we stop the DMA.
5051 EXPORT_SYMBOL(il_pci_suspend);
5054 il_pci_resume(struct device *device)
5056 struct pci_dev *pdev = to_pci_dev(device);
5057 struct il_priv *il = pci_get_drvdata(pdev);
5058 bool hw_rfkill = false;
5061 * We disable the RETRY_TIMEOUT register (0x41) to keep
5062 * PCI Tx retries from interfering with C3 CPU state.
5064 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
5066 il_enable_interrupts(il);
5068 if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5072 set_bit(S_RF_KILL_HW, &il->status);
5074 clear_bit(S_RF_KILL_HW, &il->status);
5076 wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill);
5080 EXPORT_SYMBOL(il_pci_resume);
5082 const struct dev_pm_ops il_pm_ops = {
5083 .suspend = il_pci_suspend,
5084 .resume = il_pci_resume,
5085 .freeze = il_pci_suspend,
5086 .thaw = il_pci_resume,
5087 .poweroff = il_pci_suspend,
5088 .restore = il_pci_resume,
5090 EXPORT_SYMBOL(il_pm_ops);
5092 #endif /* CONFIG_PM */
5095 il_update_qos(struct il_priv *il, struct il_rxon_context *ctx)
5097 if (test_bit(S_EXIT_PENDING, &il->status))
5100 if (!ctx->is_active)
5103 ctx->qos_data.def_qos_parm.qos_flags = 0;
5105 if (ctx->qos_data.qos_active)
5106 ctx->qos_data.def_qos_parm.qos_flags |=
5107 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
5109 if (ctx->ht.enabled)
5110 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
5112 D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
5113 ctx->qos_data.qos_active, ctx->qos_data.def_qos_parm.qos_flags);
5115 il_send_cmd_pdu_async(il, ctx->qos_cmd, sizeof(struct il_qosparam_cmd),
5116 &ctx->qos_data.def_qos_parm, NULL);
5120 * il_mac_config - mac80211 config callback
5123 il_mac_config(struct ieee80211_hw *hw, u32 changed)
5125 struct il_priv *il = hw->priv;
5126 const struct il_channel_info *ch_info;
5127 struct ieee80211_conf *conf = &hw->conf;
5128 struct ieee80211_channel *channel = conf->channel;
5129 struct il_ht_config *ht_conf = &il->current_ht_config;
5130 struct il_rxon_context *ctx = &il->ctx;
5131 unsigned long flags = 0;
5134 int scan_active = 0;
5135 bool ht_changed = false;
5137 if (WARN_ON(!il->cfg->ops->legacy))
5140 mutex_lock(&il->mutex);
5142 D_MAC80211("enter to channel %d changed 0x%X\n", channel->hw_value,
5145 if (unlikely(test_bit(S_SCANNING, &il->status))) {
5147 D_MAC80211("scan active\n");
5151 (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) {
5152 /* mac80211 uses static for non-HT which is what we want */
5153 il->current_ht_config.smps = conf->smps_mode;
5156 * Recalculate chain counts.
5158 * If monitor mode is enabled then mac80211 will
5159 * set up the SM PS mode to OFF if an HT channel is
5162 if (il->cfg->ops->hcmd->set_rxon_chain)
5163 il->cfg->ops->hcmd->set_rxon_chain(il, &il->ctx);
5166 /* during scanning mac80211 will delay channel setting until
5167 * scan finish with changed = 0
5169 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
5174 ch = channel->hw_value;
5175 ch_info = il_get_channel_info(il, channel->band, ch);
5176 if (!il_is_channel_valid(ch_info)) {
5177 D_MAC80211("leave - invalid channel\n");
5182 if (il->iw_mode == NL80211_IFTYPE_ADHOC &&
5183 !il_is_channel_ibss(ch_info)) {
5184 D_MAC80211("leave - not IBSS channel\n");
5189 spin_lock_irqsave(&il->lock, flags);
5191 /* Configure HT40 channels */
5192 if (ctx->ht.enabled != conf_is_ht(conf)) {
5193 ctx->ht.enabled = conf_is_ht(conf);
5196 if (ctx->ht.enabled) {
5197 if (conf_is_ht40_minus(conf)) {
5198 ctx->ht.extension_chan_offset =
5199 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
5200 ctx->ht.is_40mhz = true;
5201 } else if (conf_is_ht40_plus(conf)) {
5202 ctx->ht.extension_chan_offset =
5203 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
5204 ctx->ht.is_40mhz = true;
5206 ctx->ht.extension_chan_offset =
5207 IEEE80211_HT_PARAM_CHA_SEC_NONE;
5208 ctx->ht.is_40mhz = false;
5211 ctx->ht.is_40mhz = false;
5214 * Default to no protection. Protection mode will
5215 * later be set from BSS config in il_ht_conf
5217 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
5219 /* if we are switching from ht to 2.4 clear flags
5220 * from any ht related info since 2.4 does not
5222 if ((le16_to_cpu(ctx->staging.channel) != ch))
5223 ctx->staging.flags = 0;
5225 il_set_rxon_channel(il, channel, ctx);
5226 il_set_rxon_ht(il, ht_conf);
5228 il_set_flags_for_band(il, ctx, channel->band, ctx->vif);
5230 spin_unlock_irqrestore(&il->lock, flags);
5232 if (il->cfg->ops->legacy->update_bcast_stations)
5233 ret = il->cfg->ops->legacy->update_bcast_stations(il);
5236 /* The list of supported rates and rate mask can be different
5237 * for each band; since the band may have changed, reset
5238 * the rate mask to what mac80211 lists */
5242 if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) {
5243 ret = il_power_update_mode(il, false);
5245 D_MAC80211("Error setting sleep level\n");
5248 if (changed & IEEE80211_CONF_CHANGE_POWER) {
5249 D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt,
5252 il_set_tx_power(il, conf->power_level, false);
5255 if (!il_is_ready(il)) {
5256 D_MAC80211("leave - not ready\n");
5263 if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
5264 il_commit_rxon(il, ctx);
5266 D_INFO("Not re-sending same RXON configuration.\n");
5268 il_update_qos(il, ctx);
5271 D_MAC80211("leave\n");
5272 mutex_unlock(&il->mutex);
5275 EXPORT_SYMBOL(il_mac_config);
5278 il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
5280 struct il_priv *il = hw->priv;
5281 unsigned long flags;
5282 struct il_rxon_context *ctx = &il->ctx;
5284 if (WARN_ON(!il->cfg->ops->legacy))
5287 mutex_lock(&il->mutex);
5288 D_MAC80211("enter\n");
5290 spin_lock_irqsave(&il->lock, flags);
5291 memset(&il->current_ht_config, 0, sizeof(struct il_ht_config));
5292 spin_unlock_irqrestore(&il->lock, flags);
5294 spin_lock_irqsave(&il->lock, flags);
5296 /* new association get rid of ibss beacon skb */
5298 dev_kfree_skb(il->beacon_skb);
5300 il->beacon_skb = NULL;
5304 spin_unlock_irqrestore(&il->lock, flags);
5306 il_scan_cancel_timeout(il, 100);
5307 if (!il_is_ready_rf(il)) {
5308 D_MAC80211("leave - not ready\n");
5309 mutex_unlock(&il->mutex);
5313 /* we are restarting association process
5314 * clear RXON_FILTER_ASSOC_MSK bit
5316 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5317 il_commit_rxon(il, ctx);
5321 mutex_unlock(&il->mutex);
5323 D_MAC80211("leave\n");
5325 EXPORT_SYMBOL(il_mac_reset_tsf);
5328 il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif)
5330 struct il_ht_config *ht_conf = &il->current_ht_config;
5331 struct ieee80211_sta *sta;
5332 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
5333 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
5335 D_ASSOC("enter:\n");
5337 if (!ctx->ht.enabled)
5340 ctx->ht.protection =
5341 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
5342 ctx->ht.non_gf_sta_present =
5344 ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
5346 ht_conf->single_chain_sufficient = false;
5348 switch (vif->type) {
5349 case NL80211_IFTYPE_STATION:
5351 sta = ieee80211_find_sta(vif, bss_conf->bssid);
5353 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
5358 tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
5359 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
5362 if (ht_cap->mcs.rx_mask[1] == 0 &&
5363 ht_cap->mcs.rx_mask[2] == 0)
5364 ht_conf->single_chain_sufficient = true;
5365 if (maxstreams <= 1)
5366 ht_conf->single_chain_sufficient = true;
5369 * If at all, this can only happen through a race
5370 * when the AP disconnects us while we're still
5371 * setting up the connection, in that case mac80211
5372 * will soon tell us about that.
5374 ht_conf->single_chain_sufficient = true;
5378 case NL80211_IFTYPE_ADHOC:
5379 ht_conf->single_chain_sufficient = true;
5389 il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif)
5391 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
5394 * inform the ucode that there is no longer an
5395 * association and that no more packets should be
5398 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5399 ctx->staging.assoc_id = 0;
5400 il_commit_rxon(il, ctx);
5404 il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
5406 struct il_priv *il = hw->priv;
5407 unsigned long flags;
5409 struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
5414 D_MAC80211("enter\n");
5416 lockdep_assert_held(&il->mutex);
5418 if (!il->beacon_ctx) {
5419 IL_ERR("update beacon but no beacon context!\n");
5424 spin_lock_irqsave(&il->lock, flags);
5427 dev_kfree_skb(il->beacon_skb);
5429 il->beacon_skb = skb;
5431 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
5432 il->timestamp = le64_to_cpu(timestamp);
5434 D_MAC80211("leave\n");
5435 spin_unlock_irqrestore(&il->lock, flags);
5437 if (!il_is_ready_rf(il)) {
5438 D_MAC80211("leave - RF not ready\n");
5442 il->cfg->ops->legacy->post_associate(il);
5446 il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5447 struct ieee80211_bss_conf *bss_conf, u32 changes)
5449 struct il_priv *il = hw->priv;
5450 struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
5453 if (WARN_ON(!il->cfg->ops->legacy))
5456 D_MAC80211("changes = 0x%X\n", changes);
5458 mutex_lock(&il->mutex);
5460 if (!il_is_alive(il)) {
5461 mutex_unlock(&il->mutex);
5465 if (changes & BSS_CHANGED_QOS) {
5466 unsigned long flags;
5468 spin_lock_irqsave(&il->lock, flags);
5469 ctx->qos_data.qos_active = bss_conf->qos;
5470 il_update_qos(il, ctx);
5471 spin_unlock_irqrestore(&il->lock, flags);
5474 if (changes & BSS_CHANGED_BEACON_ENABLED) {
5476 * the add_interface code must make sure we only ever
5477 * have a single interface that could be beaconing at
5480 if (vif->bss_conf.enable_beacon)
5481 il->beacon_ctx = ctx;
5483 il->beacon_ctx = NULL;
5486 if (changes & BSS_CHANGED_BSSID) {
5487 D_MAC80211("BSSID %pM\n", bss_conf->bssid);
5490 * If there is currently a HW scan going on in the
5491 * background then we need to cancel it else the RXON
5492 * below/in post_associate will fail.
5494 if (il_scan_cancel_timeout(il, 100)) {
5495 IL_WARN("Aborted scan still in progress after 100ms\n");
5496 D_MAC80211("leaving - scan abort failed.\n");
5497 mutex_unlock(&il->mutex);
5501 /* mac80211 only sets assoc when in STATION mode */
5502 if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
5503 memcpy(ctx->staging.bssid_addr, bss_conf->bssid,
5506 /* currently needed in a few places */
5507 memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
5509 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5515 * This needs to be after setting the BSSID in case
5516 * mac80211 decides to do both changes at once because
5517 * it will invoke post_associate.
5519 if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON))
5520 il_beacon_update(hw, vif);
5522 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5523 D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble);
5524 if (bss_conf->use_short_preamble)
5525 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5527 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5530 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5531 D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5532 if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ)
5533 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
5535 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5536 if (bss_conf->use_cts_prot)
5537 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
5539 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
5542 if (changes & BSS_CHANGED_BASIC_RATES) {
5543 /* XXX use this information
5545 * To do that, remove code from il_set_rate() and put something
5549 ctx->staging.ofdm_basic_rates =
5550 bss_conf->basic_rates;
5552 ctx->staging.ofdm_basic_rates =
5553 bss_conf->basic_rates >> 4;
5554 ctx->staging.cck_basic_rates =
5555 bss_conf->basic_rates & 0xF;
5559 if (changes & BSS_CHANGED_HT) {
5560 il_ht_conf(il, vif);
5562 if (il->cfg->ops->hcmd->set_rxon_chain)
5563 il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
5566 if (changes & BSS_CHANGED_ASSOC) {
5567 D_MAC80211("ASSOC %d\n", bss_conf->assoc);
5568 if (bss_conf->assoc) {
5569 il->timestamp = bss_conf->timestamp;
5571 if (!il_is_rfkill(il))
5572 il->cfg->ops->legacy->post_associate(il);
5574 il_set_no_assoc(il, vif);
5577 if (changes && il_is_associated_ctx(ctx) && bss_conf->aid) {
5578 D_MAC80211("Changes (%#x) while associated\n", changes);
5579 ret = il_send_rxon_assoc(il, ctx);
5581 /* Sync active_rxon with latest change. */
5582 memcpy((void *)&ctx->active, &ctx->staging,
5583 sizeof(struct il_rxon_cmd));
5587 if (changes & BSS_CHANGED_BEACON_ENABLED) {
5588 if (vif->bss_conf.enable_beacon) {
5589 memcpy(ctx->staging.bssid_addr, bss_conf->bssid,
5591 memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
5592 il->cfg->ops->legacy->config_ap(il);
5594 il_set_no_assoc(il, vif);
5597 if (changes & BSS_CHANGED_IBSS) {
5599 il->cfg->ops->legacy->manage_ibss_station(il, vif,
5603 IL_ERR("failed to %s IBSS station %pM\n",
5604 bss_conf->ibss_joined ? "add" : "remove",
5608 mutex_unlock(&il->mutex);
5610 D_MAC80211("leave\n");
5612 EXPORT_SYMBOL(il_mac_bss_info_changed);
5615 il_isr(int irq, void *data)
5617 struct il_priv *il = data;
5618 u32 inta, inta_mask;
5620 unsigned long flags;
5624 spin_lock_irqsave(&il->lock, flags);
5626 /* Disable (but don't clear!) interrupts here to avoid
5627 * back-to-back ISRs and sporadic interrupts from our NIC.
5628 * If we have something to service, the tasklet will re-enable ints.
5629 * If we *don't* have something, we'll re-enable before leaving here. */
5630 inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */
5631 _il_wr(il, CSR_INT_MASK, 0x00000000);
5633 /* Discover which interrupts are active/pending */
5634 inta = _il_rd(il, CSR_INT);
5635 inta_fh = _il_rd(il, CSR_FH_INT_STATUS);
5637 /* Ignore interrupt if there's nothing in NIC to service.
5638 * This may be due to IRQ shared with another device,
5639 * or due to sporadic interrupts thrown from our NIC. */
5640 if (!inta && !inta_fh) {
5641 D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5645 if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) {
5646 /* Hardware disappeared. It might have already raised
5648 IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta);
5652 D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask,
5655 inta &= ~CSR_INT_BIT_SCD;
5657 /* il_irq_tasklet() will service interrupts and re-enable them */
5658 if (likely(inta || inta_fh))
5659 tasklet_schedule(&il->irq_tasklet);
5662 spin_unlock_irqrestore(&il->lock, flags);
5666 /* re-enable interrupts here since we don't have anything to service. */
5667 /* only Re-enable if disabled by irq */
5668 if (test_bit(S_INT_ENABLED, &il->status))
5669 il_enable_interrupts(il);
5670 spin_unlock_irqrestore(&il->lock, flags);
5673 EXPORT_SYMBOL(il_isr);
5676 * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
5680 il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info,
5681 __le16 fc, __le32 *tx_flags)
5683 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
5684 *tx_flags |= TX_CMD_FLG_RTS_MSK;
5685 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
5686 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
5688 if (!ieee80211_is_mgmt(fc))
5691 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
5692 case cpu_to_le16(IEEE80211_STYPE_AUTH):
5693 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
5694 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
5695 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
5696 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
5697 *tx_flags |= TX_CMD_FLG_CTS_MSK;
5700 } else if (info->control.rates[0].
5701 flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
5702 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
5703 *tx_flags |= TX_CMD_FLG_CTS_MSK;
5704 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
5707 EXPORT_SYMBOL(il_tx_cmd_protection);