2 * This file is part of wl1251
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Contact: Kalle Valo <kalle.valo@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/firmware.h>
27 #include <linux/delay.h>
28 #include <linux/irq.h>
29 #include <linux/crc32.h>
30 #include <linux/etherdevice.h>
31 #include <linux/vmalloc.h>
34 #include "wl12xx_80211.h"
35 #include "wl1251_reg.h"
36 #include "wl1251_io.h"
37 #include "wl1251_cmd.h"
38 #include "wl1251_event.h"
39 #include "wl1251_tx.h"
40 #include "wl1251_rx.h"
41 #include "wl1251_ps.h"
42 #include "wl1251_init.h"
43 #include "wl1251_debugfs.h"
44 #include "wl1251_boot.h"
46 void wl1251_enable_interrupts(struct wl1251
*wl
)
48 wl
->if_ops
->enable_irq(wl
);
51 void wl1251_disable_interrupts(struct wl1251
*wl
)
53 wl
->if_ops
->disable_irq(wl
);
56 static void wl1251_power_off(struct wl1251
*wl
)
61 static void wl1251_power_on(struct wl1251
*wl
)
66 static int wl1251_fetch_firmware(struct wl1251
*wl
)
68 const struct firmware
*fw
;
69 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
72 ret
= request_firmware(&fw
, WL1251_FW_NAME
, dev
);
75 wl1251_error("could not get firmware: %d", ret
);
80 wl1251_error("firmware size is not multiple of 32 bits: %zu",
86 wl
->fw_len
= fw
->size
;
87 wl
->fw
= vmalloc(wl
->fw_len
);
90 wl1251_error("could not allocate memory for the firmware");
95 memcpy(wl
->fw
, fw
->data
, wl
->fw_len
);
100 release_firmware(fw
);
105 static int wl1251_fetch_nvs(struct wl1251
*wl
)
107 const struct firmware
*fw
;
108 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
111 ret
= request_firmware(&fw
, WL1251_NVS_NAME
, dev
);
114 wl1251_error("could not get nvs file: %d", ret
);
119 wl1251_error("nvs size is not multiple of 32 bits: %zu",
125 wl
->nvs_len
= fw
->size
;
126 wl
->nvs
= kmalloc(wl
->nvs_len
, GFP_KERNEL
);
129 wl1251_error("could not allocate memory for the nvs file");
134 memcpy(wl
->nvs
, fw
->data
, wl
->nvs_len
);
139 release_firmware(fw
);
144 static void wl1251_fw_wakeup(struct wl1251
*wl
)
148 elp_reg
= ELPCTRL_WAKE_UP
;
149 wl1251_write_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
, elp_reg
);
150 elp_reg
= wl1251_read_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
);
152 if (!(elp_reg
& ELPCTRL_WLAN_READY
))
153 wl1251_warning("WLAN not ready");
156 static int wl1251_chip_wakeup(struct wl1251
*wl
)
161 msleep(WL1251_POWER_ON_SLEEP
);
162 wl
->if_ops
->reset(wl
);
164 /* We don't need a real memory partition here, because we only want
165 * to use the registers at this point. */
166 wl1251_set_partition(wl
,
170 REGISTERS_DOWN_SIZE
);
172 /* ELP module wake up */
173 wl1251_fw_wakeup(wl
);
175 /* whal_FwCtrl_BootSm() */
177 /* 0. read chip id from CHIP_ID */
178 wl
->chip_id
= wl1251_reg_read32(wl
, CHIP_ID_B
);
180 /* 1. check if chip id is valid */
182 switch (wl
->chip_id
) {
183 case CHIP_ID_1251_PG12
:
184 wl1251_debug(DEBUG_BOOT
, "chip id 0x%x (1251 PG12)",
187 case CHIP_ID_1251_PG11
:
188 wl1251_debug(DEBUG_BOOT
, "chip id 0x%x (1251 PG11)",
191 case CHIP_ID_1251_PG10
:
193 wl1251_error("unsupported chip id: 0x%x", wl
->chip_id
);
198 if (wl
->fw
== NULL
) {
199 ret
= wl1251_fetch_firmware(wl
);
204 if (wl
->nvs
== NULL
&& !wl
->use_eeprom
) {
205 /* No NVS from netlink, try to get it from the filesystem */
206 ret
= wl1251_fetch_nvs(wl
);
215 #define WL1251_IRQ_LOOP_COUNT 10
216 static void wl1251_irq_work(struct work_struct
*work
)
218 u32 intr
, ctr
= WL1251_IRQ_LOOP_COUNT
;
220 container_of(work
, struct wl1251
, irq_work
);
223 mutex_lock(&wl
->mutex
);
225 wl1251_debug(DEBUG_IRQ
, "IRQ work");
227 if (wl
->state
== WL1251_STATE_OFF
)
230 ret
= wl1251_ps_elp_wakeup(wl
);
234 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, WL1251_ACX_INTR_ALL
);
236 intr
= wl1251_reg_read32(wl
, ACX_REG_INTERRUPT_CLEAR
);
237 wl1251_debug(DEBUG_IRQ
, "intr: 0x%x", intr
);
241 wl
->rx_counter
= wl1251_mem_read32(
242 wl
, wl
->data_path
->rx_control_addr
);
244 /* We handle a frmware bug here */
245 switch ((wl
->rx_counter
- wl
->rx_handled
) & 0xf) {
247 wl1251_debug(DEBUG_IRQ
,
248 "RX: FW and host in sync");
249 intr
&= ~WL1251_ACX_INTR_RX0_DATA
;
250 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
253 wl1251_debug(DEBUG_IRQ
, "RX: FW +1");
254 intr
|= WL1251_ACX_INTR_RX0_DATA
;
255 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
258 wl1251_debug(DEBUG_IRQ
, "RX: FW +2");
259 intr
|= WL1251_ACX_INTR_RX0_DATA
;
260 intr
|= WL1251_ACX_INTR_RX1_DATA
;
264 "RX: FW and host out of sync: %d",
265 wl
->rx_counter
- wl
->rx_handled
);
269 wl
->rx_handled
= wl
->rx_counter
;
271 wl1251_debug(DEBUG_IRQ
, "RX counter: %d",
275 intr
&= wl
->intr_mask
;
278 wl1251_debug(DEBUG_IRQ
, "INTR is 0");
282 if (intr
& WL1251_ACX_INTR_RX0_DATA
) {
283 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX0_DATA");
287 if (intr
& WL1251_ACX_INTR_RX1_DATA
) {
288 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX1_DATA");
292 if (intr
& WL1251_ACX_INTR_TX_RESULT
) {
293 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl
);
297 if (intr
& (WL1251_ACX_INTR_EVENT_A
|
298 WL1251_ACX_INTR_EVENT_B
)) {
299 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_EVENT (0x%x)",
301 if (intr
& WL1251_ACX_INTR_EVENT_A
)
302 wl1251_event_handle(wl
, 0);
304 wl1251_event_handle(wl
, 1);
307 if (intr
& WL1251_ACX_INTR_INIT_COMPLETE
)
308 wl1251_debug(DEBUG_IRQ
,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
314 intr
= wl1251_reg_read32(wl
, ACX_REG_INTERRUPT_CLEAR
);
318 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, ~(wl
->intr_mask
));
319 wl1251_ps_elp_sleep(wl
);
322 mutex_unlock(&wl
->mutex
);
325 static int wl1251_join(struct wl1251
*wl
, u8 bss_type
, u8 channel
,
326 u16 beacon_interval
, u8 dtim_period
)
330 ret
= wl1251_acx_frame_rates(wl
, DEFAULT_HW_GEN_TX_RATE
,
331 DEFAULT_HW_GEN_MODULATION_TYPE
,
332 wl
->tx_mgmt_frm_rate
,
333 wl
->tx_mgmt_frm_mod
);
338 ret
= wl1251_cmd_join(wl
, bss_type
, channel
, beacon_interval
,
344 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
345 * locking we just sleep instead, for now
353 static void wl1251_filter_work(struct work_struct
*work
)
356 container_of(work
, struct wl1251
, filter_work
);
359 mutex_lock(&wl
->mutex
);
361 if (wl
->state
== WL1251_STATE_OFF
)
364 ret
= wl1251_ps_elp_wakeup(wl
);
368 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
, wl
->beacon_int
,
374 wl1251_ps_elp_sleep(wl
);
377 mutex_unlock(&wl
->mutex
);
380 static int wl1251_op_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
382 struct wl1251
*wl
= hw
->priv
;
384 skb_queue_tail(&wl
->tx_queue
, skb
);
387 * The chip specific setup must run before the first TX packet -
388 * before that, the tx_work will not be initialized!
391 ieee80211_queue_work(wl
->hw
, &wl
->tx_work
);
394 * The workqueue is slow to process the tx_queue and we need stop
395 * the queue here, otherwise the queue will get too long.
397 if (skb_queue_len(&wl
->tx_queue
) >= WL1251_TX_QUEUE_MAX_LENGTH
) {
398 wl1251_debug(DEBUG_TX
, "op_tx: tx_queue full, stop queues");
399 ieee80211_stop_queues(wl
->hw
);
402 * FIXME: this is racy, the variable is not properly
403 * protected. Maybe fix this by removing the stupid
404 * variable altogether and checking the real queue state?
406 wl
->tx_queue_stopped
= true;
412 static int wl1251_op_start(struct ieee80211_hw
*hw
)
414 struct wl1251
*wl
= hw
->priv
;
417 wl1251_debug(DEBUG_MAC80211
, "mac80211 start");
419 mutex_lock(&wl
->mutex
);
421 if (wl
->state
!= WL1251_STATE_OFF
) {
422 wl1251_error("cannot start because not in off state: %d",
428 ret
= wl1251_chip_wakeup(wl
);
432 ret
= wl1251_boot(wl
);
436 ret
= wl1251_hw_init(wl
);
440 ret
= wl1251_acx_station_id(wl
);
444 wl
->state
= WL1251_STATE_ON
;
446 wl1251_info("firmware booted (%s)", wl
->fw_ver
);
450 wl1251_power_off(wl
);
452 mutex_unlock(&wl
->mutex
);
457 static void wl1251_op_stop(struct ieee80211_hw
*hw
)
459 struct wl1251
*wl
= hw
->priv
;
463 wl1251_debug(DEBUG_MAC80211
, "mac80211 stop");
465 mutex_lock(&wl
->mutex
);
467 WARN_ON(wl
->state
!= WL1251_STATE_ON
);
470 mutex_unlock(&wl
->mutex
);
471 ieee80211_scan_completed(wl
->hw
, true);
472 mutex_lock(&wl
->mutex
);
473 wl
->scanning
= false;
476 wl
->state
= WL1251_STATE_OFF
;
478 wl1251_disable_interrupts(wl
);
480 mutex_unlock(&wl
->mutex
);
482 cancel_work_sync(&wl
->irq_work
);
483 cancel_work_sync(&wl
->tx_work
);
484 cancel_work_sync(&wl
->filter_work
);
486 mutex_lock(&wl
->mutex
);
488 /* let's notify MAC80211 about the remaining pending TX frames */
490 wl1251_power_off(wl
);
492 memset(wl
->bssid
, 0, ETH_ALEN
);
494 wl
->bss_type
= MAX_BSS_TYPE
;
496 wl
->data_in_count
= 0;
499 wl
->rx_current_buffer
= 0;
501 wl
->next_tx_complete
= 0;
504 wl
->tx_queue_stopped
= false;
505 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
506 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
508 wl1251_debugfs_reset(wl
);
510 mutex_unlock(&wl
->mutex
);
513 static int wl1251_op_add_interface(struct ieee80211_hw
*hw
,
514 struct ieee80211_vif
*vif
)
516 struct wl1251
*wl
= hw
->priv
;
519 wl1251_debug(DEBUG_MAC80211
, "mac80211 add interface type %d mac %pM",
520 vif
->type
, vif
->addr
);
522 mutex_lock(&wl
->mutex
);
531 case NL80211_IFTYPE_STATION
:
532 wl
->bss_type
= BSS_TYPE_STA_BSS
;
534 case NL80211_IFTYPE_ADHOC
:
535 wl
->bss_type
= BSS_TYPE_IBSS
;
542 if (memcmp(wl
->mac_addr
, vif
->addr
, ETH_ALEN
)) {
543 memcpy(wl
->mac_addr
, vif
->addr
, ETH_ALEN
);
544 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
545 ret
= wl1251_acx_station_id(wl
);
551 mutex_unlock(&wl
->mutex
);
555 static void wl1251_op_remove_interface(struct ieee80211_hw
*hw
,
556 struct ieee80211_vif
*vif
)
558 struct wl1251
*wl
= hw
->priv
;
560 mutex_lock(&wl
->mutex
);
561 wl1251_debug(DEBUG_MAC80211
, "mac80211 remove interface");
563 mutex_unlock(&wl
->mutex
);
566 static int wl1251_build_qos_null_data(struct wl1251
*wl
)
568 struct ieee80211_qos_hdr
template;
570 memset(&template, 0, sizeof(template));
572 memcpy(template.addr1
, wl
->bssid
, ETH_ALEN
);
573 memcpy(template.addr2
, wl
->mac_addr
, ETH_ALEN
);
574 memcpy(template.addr3
, wl
->bssid
, ETH_ALEN
);
576 template.frame_control
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
577 IEEE80211_STYPE_QOS_NULLFUNC
|
578 IEEE80211_FCTL_TODS
);
580 /* FIXME: not sure what priority to use here */
581 template.qos_ctrl
= cpu_to_le16(0);
583 return wl1251_cmd_template_set(wl
, CMD_QOS_NULL_DATA
, &template,
587 static int wl1251_op_config(struct ieee80211_hw
*hw
, u32 changed
)
589 struct wl1251
*wl
= hw
->priv
;
590 struct ieee80211_conf
*conf
= &hw
->conf
;
591 int channel
, ret
= 0;
593 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
595 wl1251_debug(DEBUG_MAC80211
, "mac80211 config ch %d psm %s power %d",
597 conf
->flags
& IEEE80211_CONF_PS
? "on" : "off",
600 mutex_lock(&wl
->mutex
);
602 ret
= wl1251_ps_elp_wakeup(wl
);
606 if (channel
!= wl
->channel
) {
607 wl
->channel
= channel
;
609 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
610 wl
->beacon_int
, wl
->dtim_period
);
615 if (conf
->flags
& IEEE80211_CONF_PS
&& !wl
->psm_requested
) {
616 wl1251_debug(DEBUG_PSM
, "psm enabled");
618 wl
->psm_requested
= true;
620 wl
->dtim_period
= conf
->ps_dtim_period
;
622 ret
= wl1251_acx_wr_tbtt_and_dtim(wl
, wl
->beacon_int
,
626 * mac80211 enables PSM only if we're already associated.
628 ret
= wl1251_ps_set_mode(wl
, STATION_POWER_SAVE_MODE
);
631 } else if (!(conf
->flags
& IEEE80211_CONF_PS
) &&
633 wl1251_debug(DEBUG_PSM
, "psm disabled");
635 wl
->psm_requested
= false;
638 ret
= wl1251_ps_set_mode(wl
, STATION_ACTIVE_MODE
);
644 if (conf
->power_level
!= wl
->power_level
) {
645 ret
= wl1251_acx_tx_power(wl
, conf
->power_level
);
649 wl
->power_level
= conf
->power_level
;
653 wl1251_ps_elp_sleep(wl
);
656 mutex_unlock(&wl
->mutex
);
661 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
664 FIF_BCN_PRBRESP_PROMISC | \
668 static void wl1251_op_configure_filter(struct ieee80211_hw
*hw
,
669 unsigned int changed
,
670 unsigned int *total
,u64 multicast
)
672 struct wl1251
*wl
= hw
->priv
;
674 wl1251_debug(DEBUG_MAC80211
, "mac80211 configure filter");
676 *total
&= WL1251_SUPPORTED_FILTERS
;
677 changed
&= WL1251_SUPPORTED_FILTERS
;
680 /* no filters which we support changed */
683 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
685 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
686 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
688 if (*total
& FIF_PROMISC_IN_BSS
) {
689 wl
->rx_config
|= CFG_BSSID_FILTER_EN
;
690 wl
->rx_config
|= CFG_RX_ALL_GOOD
;
692 if (*total
& FIF_ALLMULTI
)
694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
695 * all multicast frames
697 wl
->rx_config
&= ~CFG_MC_FILTER_EN
;
698 if (*total
& FIF_FCSFAIL
)
699 wl
->rx_filter
|= CFG_RX_FCS_ERROR
;
700 if (*total
& FIF_BCN_PRBRESP_PROMISC
) {
701 wl
->rx_config
&= ~CFG_BSSID_FILTER_EN
;
702 wl
->rx_config
&= ~CFG_SSID_FILTER_EN
;
704 if (*total
& FIF_CONTROL
)
705 wl
->rx_filter
|= CFG_RX_CTL_EN
;
706 if (*total
& FIF_OTHER_BSS
)
707 wl
->rx_filter
&= ~CFG_BSSID_FILTER_EN
;
710 * FIXME: workqueues need to be properly cancelled on stop(), for
711 * now let's just disable changing the filter settings. They will
712 * be updated any on config().
714 /* schedule_work(&wl->filter_work); */
718 static int wl1251_set_key_type(struct wl1251
*wl
,
719 struct wl1251_cmd_set_keys
*key
,
720 enum set_key_cmd cmd
,
721 struct ieee80211_key_conf
*mac80211_key
,
724 switch (mac80211_key
->alg
) {
726 if (is_broadcast_ether_addr(addr
))
727 key
->key_type
= KEY_WEP_DEFAULT
;
729 key
->key_type
= KEY_WEP_ADDR
;
731 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
734 if (is_broadcast_ether_addr(addr
))
735 key
->key_type
= KEY_TKIP_MIC_GROUP
;
737 key
->key_type
= KEY_TKIP_MIC_PAIRWISE
;
739 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
742 if (is_broadcast_ether_addr(addr
))
743 key
->key_type
= KEY_AES_GROUP
;
745 key
->key_type
= KEY_AES_PAIRWISE
;
746 mac80211_key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
749 wl1251_error("Unknown key algo 0x%x", mac80211_key
->alg
);
756 static int wl1251_op_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
757 struct ieee80211_vif
*vif
,
758 struct ieee80211_sta
*sta
,
759 struct ieee80211_key_conf
*key
)
761 struct wl1251
*wl
= hw
->priv
;
762 struct wl1251_cmd_set_keys
*wl_cmd
;
766 static const u8 bcast_addr
[ETH_ALEN
] =
767 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
769 wl1251_debug(DEBUG_MAC80211
, "mac80211 set key");
771 wl_cmd
= kzalloc(sizeof(*wl_cmd
), GFP_KERNEL
);
777 addr
= sta
? sta
->addr
: bcast_addr
;
779 wl1251_debug(DEBUG_CRYPT
, "CMD: 0x%x", cmd
);
780 wl1251_dump(DEBUG_CRYPT
, "ADDR: ", addr
, ETH_ALEN
);
781 wl1251_debug(DEBUG_CRYPT
, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
782 key
->alg
, key
->keyidx
, key
->keylen
, key
->flags
);
783 wl1251_dump(DEBUG_CRYPT
, "KEY: ", key
->key
, key
->keylen
);
785 if (is_zero_ether_addr(addr
)) {
786 /* We dont support TX only encryption */
791 mutex_lock(&wl
->mutex
);
793 ret
= wl1251_ps_elp_wakeup(wl
);
799 wl_cmd
->key_action
= KEY_ADD_OR_REPLACE
;
802 wl_cmd
->key_action
= KEY_REMOVE
;
805 wl1251_error("Unsupported key cmd 0x%x", cmd
);
809 ret
= wl1251_set_key_type(wl
, wl_cmd
, cmd
, key
, addr
);
811 wl1251_error("Set KEY type failed");
815 if (wl_cmd
->key_type
!= KEY_WEP_DEFAULT
)
816 memcpy(wl_cmd
->addr
, addr
, ETH_ALEN
);
818 if ((wl_cmd
->key_type
== KEY_TKIP_MIC_GROUP
) ||
819 (wl_cmd
->key_type
== KEY_TKIP_MIC_PAIRWISE
)) {
821 * We get the key in the following form:
822 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
823 * but the target is expecting:
824 * TKIP - RX MIC - TX MIC
826 memcpy(wl_cmd
->key
, key
->key
, 16);
827 memcpy(wl_cmd
->key
+ 16, key
->key
+ 24, 8);
828 memcpy(wl_cmd
->key
+ 24, key
->key
+ 16, 8);
831 memcpy(wl_cmd
->key
, key
->key
, key
->keylen
);
833 wl_cmd
->key_size
= key
->keylen
;
835 wl_cmd
->id
= key
->keyidx
;
836 wl_cmd
->ssid_profile
= 0;
838 wl1251_dump(DEBUG_CRYPT
, "TARGET KEY: ", wl_cmd
, sizeof(*wl_cmd
));
840 ret
= wl1251_cmd_send(wl
, CMD_SET_KEYS
, wl_cmd
, sizeof(*wl_cmd
));
842 wl1251_warning("could not set keys");
847 wl1251_ps_elp_sleep(wl
);
850 mutex_unlock(&wl
->mutex
);
858 static int wl1251_op_hw_scan(struct ieee80211_hw
*hw
,
859 struct ieee80211_vif
*vif
,
860 struct cfg80211_scan_request
*req
)
862 struct wl1251
*wl
= hw
->priv
;
868 wl1251_debug(DEBUG_MAC80211
, "mac80211 hw scan");
871 ssid
= req
->ssids
[0].ssid
;
872 ssid_len
= req
->ssids
[0].ssid_len
;
875 mutex_lock(&wl
->mutex
);
878 wl1251_debug(DEBUG_SCAN
, "scan already in progress");
883 ret
= wl1251_ps_elp_wakeup(wl
);
887 skb
= ieee80211_probereq_get(wl
->hw
, wl
->vif
, ssid
, ssid_len
,
888 req
->ie
, req
->ie_len
);
894 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_REQ
, skb
->data
,
900 ret
= wl1251_cmd_trigger_scan_to(wl
, 0);
906 ret
= wl1251_cmd_scan(wl
, ssid
, ssid_len
, req
->channels
,
907 req
->n_channels
, WL1251_SCAN_NUM_PROBES
);
909 wl
->scanning
= false;
914 wl1251_ps_elp_sleep(wl
);
917 mutex_unlock(&wl
->mutex
);
922 static int wl1251_op_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
924 struct wl1251
*wl
= hw
->priv
;
927 mutex_lock(&wl
->mutex
);
929 ret
= wl1251_ps_elp_wakeup(wl
);
933 ret
= wl1251_acx_rts_threshold(wl
, (u16
) value
);
935 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret
);
937 wl1251_ps_elp_sleep(wl
);
940 mutex_unlock(&wl
->mutex
);
945 static void wl1251_op_bss_info_changed(struct ieee80211_hw
*hw
,
946 struct ieee80211_vif
*vif
,
947 struct ieee80211_bss_conf
*bss_conf
,
950 struct wl1251
*wl
= hw
->priv
;
951 struct sk_buff
*beacon
, *skb
;
954 wl1251_debug(DEBUG_MAC80211
, "mac80211 bss info changed");
956 mutex_lock(&wl
->mutex
);
958 ret
= wl1251_ps_elp_wakeup(wl
);
962 if (changed
& BSS_CHANGED_BSSID
) {
963 memcpy(wl
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
965 skb
= ieee80211_nullfunc_get(wl
->hw
, wl
->vif
);
969 ret
= wl1251_cmd_template_set(wl
, CMD_NULL_DATA
,
970 skb
->data
, skb
->len
);
975 ret
= wl1251_build_qos_null_data(wl
);
979 if (wl
->bss_type
!= BSS_TYPE_IBSS
) {
980 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
981 wl
->beacon_int
, wl
->dtim_period
);
987 if (changed
& BSS_CHANGED_ASSOC
) {
988 if (bss_conf
->assoc
) {
989 wl
->beacon_int
= bss_conf
->beacon_int
;
991 skb
= ieee80211_pspoll_get(wl
->hw
, wl
->vif
);
995 ret
= wl1251_cmd_template_set(wl
, CMD_PS_POLL
,
1002 ret
= wl1251_acx_aid(wl
, bss_conf
->aid
);
1006 /* use defaults when not associated */
1007 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1008 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1011 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1012 if (bss_conf
->use_short_slot
)
1013 ret
= wl1251_acx_slot(wl
, SLOT_TIME_SHORT
);
1015 ret
= wl1251_acx_slot(wl
, SLOT_TIME_LONG
);
1017 wl1251_warning("Set slot time failed %d", ret
);
1022 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
1023 if (bss_conf
->use_short_preamble
)
1024 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_SHORT
);
1026 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_LONG
);
1029 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
1030 if (bss_conf
->use_cts_prot
)
1031 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_ENABLE
);
1033 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_DISABLE
);
1035 wl1251_warning("Set ctsprotect failed %d", ret
);
1040 if (changed
& BSS_CHANGED_BEACON
) {
1041 beacon
= ieee80211_beacon_get(hw
, vif
);
1042 ret
= wl1251_cmd_template_set(wl
, CMD_BEACON
, beacon
->data
,
1046 dev_kfree_skb(beacon
);
1050 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_RESP
, beacon
->data
,
1053 dev_kfree_skb(beacon
);
1058 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->beacon_int
,
1059 wl
->channel
, wl
->dtim_period
);
1066 wl1251_ps_elp_sleep(wl
);
1069 mutex_unlock(&wl
->mutex
);
1073 /* can't be const, mac80211 writes to this */
1074 static struct ieee80211_rate wl1251_rates
[] = {
1077 .hw_value_short
= 0x1, },
1080 .hw_value_short
= 0x2,
1081 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1084 .hw_value_short
= 0x4,
1085 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1088 .hw_value_short
= 0x20,
1089 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1092 .hw_value_short
= 0x8, },
1095 .hw_value_short
= 0x10, },
1098 .hw_value_short
= 0x40, },
1101 .hw_value_short
= 0x80, },
1104 .hw_value_short
= 0x200, },
1107 .hw_value_short
= 0x400, },
1110 .hw_value_short
= 0x800, },
1113 .hw_value_short
= 0x1000, },
1116 /* can't be const, mac80211 writes to this */
1117 static struct ieee80211_channel wl1251_channels
[] = {
1118 { .hw_value
= 1, .center_freq
= 2412},
1119 { .hw_value
= 2, .center_freq
= 2417},
1120 { .hw_value
= 3, .center_freq
= 2422},
1121 { .hw_value
= 4, .center_freq
= 2427},
1122 { .hw_value
= 5, .center_freq
= 2432},
1123 { .hw_value
= 6, .center_freq
= 2437},
1124 { .hw_value
= 7, .center_freq
= 2442},
1125 { .hw_value
= 8, .center_freq
= 2447},
1126 { .hw_value
= 9, .center_freq
= 2452},
1127 { .hw_value
= 10, .center_freq
= 2457},
1128 { .hw_value
= 11, .center_freq
= 2462},
1129 { .hw_value
= 12, .center_freq
= 2467},
1130 { .hw_value
= 13, .center_freq
= 2472},
1133 static int wl1251_op_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1134 const struct ieee80211_tx_queue_params
*params
)
1136 enum wl1251_acx_ps_scheme ps_scheme
;
1137 struct wl1251
*wl
= hw
->priv
;
1140 mutex_lock(&wl
->mutex
);
1142 wl1251_debug(DEBUG_MAC80211
, "mac80211 conf tx %d", queue
);
1144 ret
= wl1251_ps_elp_wakeup(wl
);
1148 /* mac80211 uses units of 32 usec */
1149 ret
= wl1251_acx_ac_cfg(wl
, wl1251_tx_get_queue(queue
),
1150 params
->cw_min
, params
->cw_max
,
1151 params
->aifs
, params
->txop
* 32);
1156 ps_scheme
= WL1251_ACX_PS_SCHEME_UPSD_TRIGGER
;
1158 ps_scheme
= WL1251_ACX_PS_SCHEME_LEGACY
;
1160 ret
= wl1251_acx_tid_cfg(wl
, wl1251_tx_get_queue(queue
),
1162 wl1251_tx_get_queue(queue
), ps_scheme
,
1163 WL1251_ACX_ACK_POLICY_LEGACY
);
1168 wl1251_ps_elp_sleep(wl
);
1171 mutex_unlock(&wl
->mutex
);
1176 /* can't be const, mac80211 writes to this */
1177 static struct ieee80211_supported_band wl1251_band_2ghz
= {
1178 .channels
= wl1251_channels
,
1179 .n_channels
= ARRAY_SIZE(wl1251_channels
),
1180 .bitrates
= wl1251_rates
,
1181 .n_bitrates
= ARRAY_SIZE(wl1251_rates
),
1184 static const struct ieee80211_ops wl1251_ops
= {
1185 .start
= wl1251_op_start
,
1186 .stop
= wl1251_op_stop
,
1187 .add_interface
= wl1251_op_add_interface
,
1188 .remove_interface
= wl1251_op_remove_interface
,
1189 .config
= wl1251_op_config
,
1190 .configure_filter
= wl1251_op_configure_filter
,
1192 .set_key
= wl1251_op_set_key
,
1193 .hw_scan
= wl1251_op_hw_scan
,
1194 .bss_info_changed
= wl1251_op_bss_info_changed
,
1195 .set_rts_threshold
= wl1251_op_set_rts_threshold
,
1196 .conf_tx
= wl1251_op_conf_tx
,
1199 static int wl1251_read_eeprom_byte(struct wl1251
*wl
, off_t offset
, u8
*data
)
1201 unsigned long timeout
;
1203 wl1251_reg_write32(wl
, EE_ADDR
, offset
);
1204 wl1251_reg_write32(wl
, EE_CTL
, EE_CTL_READ
);
1206 /* EE_CTL_READ clears when data is ready */
1207 timeout
= jiffies
+ msecs_to_jiffies(100);
1209 if (!(wl1251_reg_read32(wl
, EE_CTL
) & EE_CTL_READ
))
1212 if (time_after(jiffies
, timeout
))
1218 *data
= wl1251_reg_read32(wl
, EE_DATA
);
1222 static int wl1251_read_eeprom(struct wl1251
*wl
, off_t offset
,
1223 u8
*data
, size_t len
)
1228 wl1251_reg_write32(wl
, EE_START
, 0);
1230 for (i
= 0; i
< len
; i
++) {
1231 ret
= wl1251_read_eeprom_byte(wl
, offset
+ i
, &data
[i
]);
1239 static int wl1251_read_eeprom_mac(struct wl1251
*wl
)
1244 wl1251_set_partition(wl
, 0, 0, REGISTERS_BASE
, REGISTERS_DOWN_SIZE
);
1246 ret
= wl1251_read_eeprom(wl
, 0x1c, mac
, sizeof(mac
));
1248 wl1251_warning("failed to read MAC address from EEPROM");
1252 /* MAC is stored in reverse order */
1253 for (i
= 0; i
< ETH_ALEN
; i
++)
1254 wl
->mac_addr
[i
] = mac
[ETH_ALEN
- i
- 1];
1259 static int wl1251_register_hw(struct wl1251
*wl
)
1263 if (wl
->mac80211_registered
)
1266 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
1268 ret
= ieee80211_register_hw(wl
->hw
);
1270 wl1251_error("unable to register mac80211 hw: %d", ret
);
1274 wl
->mac80211_registered
= true;
1276 wl1251_notice("loaded");
1281 int wl1251_init_ieee80211(struct wl1251
*wl
)
1285 /* The tx descriptor buffer and the TKIP space */
1286 wl
->hw
->extra_tx_headroom
= sizeof(struct tx_double_buffer_desc
)
1287 + WL1251_TKIP_IV_SPACE
;
1290 /* FIXME: find a proper value */
1291 wl
->hw
->channel_change_time
= 10000;
1293 wl
->hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
1294 IEEE80211_HW_NOISE_DBM
|
1295 IEEE80211_HW_SUPPORTS_PS
|
1296 IEEE80211_HW_BEACON_FILTER
|
1297 IEEE80211_HW_SUPPORTS_UAPSD
;
1299 wl
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
1300 wl
->hw
->wiphy
->max_scan_ssids
= 1;
1301 wl
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &wl1251_band_2ghz
;
1306 wl1251_read_eeprom_mac(wl
);
1308 ret
= wl1251_register_hw(wl
);
1312 wl1251_debugfs_init(wl
);
1313 wl1251_notice("initialized");
1320 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211
);
1322 struct ieee80211_hw
*wl1251_alloc_hw(void)
1324 struct ieee80211_hw
*hw
;
1327 static const u8 nokia_oui
[3] = {0x00, 0x1f, 0xdf};
1329 hw
= ieee80211_alloc_hw(sizeof(*wl
), &wl1251_ops
);
1331 wl1251_error("could not alloc ieee80211_hw");
1332 return ERR_PTR(-ENOMEM
);
1336 memset(wl
, 0, sizeof(*wl
));
1340 wl
->data_in_count
= 0;
1342 skb_queue_head_init(&wl
->tx_queue
);
1344 INIT_WORK(&wl
->filter_work
, wl1251_filter_work
);
1345 INIT_DELAYED_WORK(&wl
->elp_work
, wl1251_elp_work
);
1346 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
1347 wl
->scanning
= false;
1348 wl
->default_key
= 0;
1352 wl
->rx_current_buffer
= 0;
1354 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
1355 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
1358 wl
->psm_requested
= false;
1359 wl
->tx_queue_stopped
= false;
1360 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
1361 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1362 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1365 for (i
= 0; i
< FW_TX_CMPLT_BLOCK_SIZE
; i
++)
1366 wl
->tx_frames
[i
] = NULL
;
1368 wl
->next_tx_complete
= 0;
1370 INIT_WORK(&wl
->irq_work
, wl1251_irq_work
);
1371 INIT_WORK(&wl
->tx_work
, wl1251_tx_work
);
1374 * In case our MAC address is not correctly set,
1375 * we use a random but Nokia MAC.
1377 memcpy(wl
->mac_addr
, nokia_oui
, 3);
1378 get_random_bytes(wl
->mac_addr
+ 3, 3);
1380 wl
->state
= WL1251_STATE_OFF
;
1381 mutex_init(&wl
->mutex
);
1383 wl
->tx_mgmt_frm_rate
= DEFAULT_HW_GEN_TX_RATE
;
1384 wl
->tx_mgmt_frm_mod
= DEFAULT_HW_GEN_MODULATION_TYPE
;
1386 wl
->rx_descriptor
= kmalloc(sizeof(*wl
->rx_descriptor
), GFP_KERNEL
);
1387 if (!wl
->rx_descriptor
) {
1388 wl1251_error("could not allocate memory for rx descriptor");
1389 ieee80211_free_hw(hw
);
1390 return ERR_PTR(-ENOMEM
);
1395 EXPORT_SYMBOL_GPL(wl1251_alloc_hw
);
1397 int wl1251_free_hw(struct wl1251
*wl
)
1399 ieee80211_unregister_hw(wl
->hw
);
1401 wl1251_debugfs_exit(wl
);
1403 kfree(wl
->target_mem_map
);
1404 kfree(wl
->data_path
);
1410 kfree(wl
->rx_descriptor
);
1411 wl
->rx_descriptor
= NULL
;
1413 ieee80211_free_hw(wl
->hw
);
1417 EXPORT_SYMBOL_GPL(wl1251_free_hw
);
1419 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1420 MODULE_LICENSE("GPL");
1421 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1422 MODULE_ALIAS("spi:wl1251");
1423 MODULE_FIRMWARE(WL1251_FW_NAME
);