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>
32 #include <linux/slab.h>
35 #include "wl12xx_80211.h"
36 #include "wl1251_reg.h"
37 #include "wl1251_io.h"
38 #include "wl1251_cmd.h"
39 #include "wl1251_event.h"
40 #include "wl1251_tx.h"
41 #include "wl1251_rx.h"
42 #include "wl1251_ps.h"
43 #include "wl1251_init.h"
44 #include "wl1251_debugfs.h"
45 #include "wl1251_boot.h"
47 void wl1251_enable_interrupts(struct wl1251
*wl
)
49 wl
->if_ops
->enable_irq(wl
);
52 void wl1251_disable_interrupts(struct wl1251
*wl
)
54 wl
->if_ops
->disable_irq(wl
);
57 static void wl1251_power_off(struct wl1251
*wl
)
62 static void wl1251_power_on(struct wl1251
*wl
)
67 static int wl1251_fetch_firmware(struct wl1251
*wl
)
69 const struct firmware
*fw
;
70 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
73 ret
= request_firmware(&fw
, WL1251_FW_NAME
, dev
);
76 wl1251_error("could not get firmware: %d", ret
);
81 wl1251_error("firmware size is not multiple of 32 bits: %zu",
87 wl
->fw_len
= fw
->size
;
88 wl
->fw
= vmalloc(wl
->fw_len
);
91 wl1251_error("could not allocate memory for the firmware");
96 memcpy(wl
->fw
, fw
->data
, wl
->fw_len
);
101 release_firmware(fw
);
106 static int wl1251_fetch_nvs(struct wl1251
*wl
)
108 const struct firmware
*fw
;
109 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
112 ret
= request_firmware(&fw
, WL1251_NVS_NAME
, dev
);
115 wl1251_error("could not get nvs file: %d", ret
);
120 wl1251_error("nvs size is not multiple of 32 bits: %zu",
126 wl
->nvs_len
= fw
->size
;
127 wl
->nvs
= kmemdup(fw
->data
, wl
->nvs_len
, GFP_KERNEL
);
130 wl1251_error("could not allocate memory for the nvs file");
138 release_firmware(fw
);
143 static void wl1251_fw_wakeup(struct wl1251
*wl
)
147 elp_reg
= ELPCTRL_WAKE_UP
;
148 wl1251_write_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
, elp_reg
);
149 elp_reg
= wl1251_read_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
);
151 if (!(elp_reg
& ELPCTRL_WLAN_READY
))
152 wl1251_warning("WLAN not ready");
155 static int wl1251_chip_wakeup(struct wl1251
*wl
)
160 msleep(WL1251_POWER_ON_SLEEP
);
161 wl
->if_ops
->reset(wl
);
163 /* We don't need a real memory partition here, because we only want
164 * to use the registers at this point. */
165 wl1251_set_partition(wl
,
169 REGISTERS_DOWN_SIZE
);
171 /* ELP module wake up */
172 wl1251_fw_wakeup(wl
);
174 /* whal_FwCtrl_BootSm() */
176 /* 0. read chip id from CHIP_ID */
177 wl
->chip_id
= wl1251_reg_read32(wl
, CHIP_ID_B
);
179 /* 1. check if chip id is valid */
181 switch (wl
->chip_id
) {
182 case CHIP_ID_1251_PG12
:
183 wl1251_debug(DEBUG_BOOT
, "chip id 0x%x (1251 PG12)",
186 case CHIP_ID_1251_PG11
:
187 wl1251_debug(DEBUG_BOOT
, "chip id 0x%x (1251 PG11)",
190 case CHIP_ID_1251_PG10
:
192 wl1251_error("unsupported chip id: 0x%x", wl
->chip_id
);
197 if (wl
->fw
== NULL
) {
198 ret
= wl1251_fetch_firmware(wl
);
203 if (wl
->nvs
== NULL
&& !wl
->use_eeprom
) {
204 /* No NVS from netlink, try to get it from the filesystem */
205 ret
= wl1251_fetch_nvs(wl
);
214 #define WL1251_IRQ_LOOP_COUNT 10
215 static void wl1251_irq_work(struct work_struct
*work
)
217 u32 intr
, ctr
= WL1251_IRQ_LOOP_COUNT
;
219 container_of(work
, struct wl1251
, irq_work
);
222 mutex_lock(&wl
->mutex
);
224 wl1251_debug(DEBUG_IRQ
, "IRQ work");
226 if (wl
->state
== WL1251_STATE_OFF
)
229 ret
= wl1251_ps_elp_wakeup(wl
);
233 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, WL1251_ACX_INTR_ALL
);
235 intr
= wl1251_reg_read32(wl
, ACX_REG_INTERRUPT_CLEAR
);
236 wl1251_debug(DEBUG_IRQ
, "intr: 0x%x", intr
);
240 wl
->rx_counter
= wl1251_mem_read32(
241 wl
, wl
->data_path
->rx_control_addr
);
243 /* We handle a frmware bug here */
244 switch ((wl
->rx_counter
- wl
->rx_handled
) & 0xf) {
246 wl1251_debug(DEBUG_IRQ
,
247 "RX: FW and host in sync");
248 intr
&= ~WL1251_ACX_INTR_RX0_DATA
;
249 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
252 wl1251_debug(DEBUG_IRQ
, "RX: FW +1");
253 intr
|= WL1251_ACX_INTR_RX0_DATA
;
254 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
257 wl1251_debug(DEBUG_IRQ
, "RX: FW +2");
258 intr
|= WL1251_ACX_INTR_RX0_DATA
;
259 intr
|= WL1251_ACX_INTR_RX1_DATA
;
263 "RX: FW and host out of sync: %d",
264 wl
->rx_counter
- wl
->rx_handled
);
268 wl
->rx_handled
= wl
->rx_counter
;
270 wl1251_debug(DEBUG_IRQ
, "RX counter: %d",
274 intr
&= wl
->intr_mask
;
277 wl1251_debug(DEBUG_IRQ
, "INTR is 0");
281 if (intr
& WL1251_ACX_INTR_RX0_DATA
) {
282 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX0_DATA");
286 if (intr
& WL1251_ACX_INTR_RX1_DATA
) {
287 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX1_DATA");
291 if (intr
& WL1251_ACX_INTR_TX_RESULT
) {
292 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_TX_RESULT");
293 wl1251_tx_complete(wl
);
296 if (intr
& (WL1251_ACX_INTR_EVENT_A
|
297 WL1251_ACX_INTR_EVENT_B
)) {
298 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_EVENT (0x%x)",
300 if (intr
& WL1251_ACX_INTR_EVENT_A
)
301 wl1251_event_handle(wl
, 0);
303 wl1251_event_handle(wl
, 1);
306 if (intr
& WL1251_ACX_INTR_INIT_COMPLETE
)
307 wl1251_debug(DEBUG_IRQ
,
308 "WL1251_ACX_INTR_INIT_COMPLETE");
313 intr
= wl1251_reg_read32(wl
, ACX_REG_INTERRUPT_CLEAR
);
317 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, ~(wl
->intr_mask
));
318 wl1251_ps_elp_sleep(wl
);
321 mutex_unlock(&wl
->mutex
);
324 static int wl1251_join(struct wl1251
*wl
, u8 bss_type
, u8 channel
,
325 u16 beacon_interval
, u8 dtim_period
)
329 ret
= wl1251_acx_frame_rates(wl
, DEFAULT_HW_GEN_TX_RATE
,
330 DEFAULT_HW_GEN_MODULATION_TYPE
,
331 wl
->tx_mgmt_frm_rate
,
332 wl
->tx_mgmt_frm_mod
);
337 ret
= wl1251_cmd_join(wl
, bss_type
, channel
, beacon_interval
,
348 static void wl1251_filter_work(struct work_struct
*work
)
351 container_of(work
, struct wl1251
, filter_work
);
354 mutex_lock(&wl
->mutex
);
356 if (wl
->state
== WL1251_STATE_OFF
)
359 ret
= wl1251_ps_elp_wakeup(wl
);
363 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
, wl
->beacon_int
,
369 wl1251_ps_elp_sleep(wl
);
372 mutex_unlock(&wl
->mutex
);
375 static int wl1251_op_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
377 struct wl1251
*wl
= hw
->priv
;
379 skb_queue_tail(&wl
->tx_queue
, skb
);
382 * The chip specific setup must run before the first TX packet -
383 * before that, the tx_work will not be initialized!
386 ieee80211_queue_work(wl
->hw
, &wl
->tx_work
);
389 * The workqueue is slow to process the tx_queue and we need stop
390 * the queue here, otherwise the queue will get too long.
392 if (skb_queue_len(&wl
->tx_queue
) >= WL1251_TX_QUEUE_MAX_LENGTH
) {
393 wl1251_debug(DEBUG_TX
, "op_tx: tx_queue full, stop queues");
394 ieee80211_stop_queues(wl
->hw
);
396 wl
->tx_queue_stopped
= true;
402 static int wl1251_op_start(struct ieee80211_hw
*hw
)
404 struct wl1251
*wl
= hw
->priv
;
405 struct wiphy
*wiphy
= hw
->wiphy
;
408 wl1251_debug(DEBUG_MAC80211
, "mac80211 start");
410 mutex_lock(&wl
->mutex
);
412 if (wl
->state
!= WL1251_STATE_OFF
) {
413 wl1251_error("cannot start because not in off state: %d",
419 ret
= wl1251_chip_wakeup(wl
);
423 ret
= wl1251_boot(wl
);
427 ret
= wl1251_hw_init(wl
);
431 ret
= wl1251_acx_station_id(wl
);
435 wl
->state
= WL1251_STATE_ON
;
437 wl1251_info("firmware booted (%s)", wl
->fw_ver
);
439 /* update hw/fw version info in wiphy struct */
440 wiphy
->hw_version
= wl
->chip_id
;
441 strncpy(wiphy
->fw_version
, wl
->fw_ver
, sizeof(wiphy
->fw_version
));
445 wl1251_power_off(wl
);
447 mutex_unlock(&wl
->mutex
);
452 static void wl1251_op_stop(struct ieee80211_hw
*hw
)
454 struct wl1251
*wl
= hw
->priv
;
458 wl1251_debug(DEBUG_MAC80211
, "mac80211 stop");
460 mutex_lock(&wl
->mutex
);
462 WARN_ON(wl
->state
!= WL1251_STATE_ON
);
465 mutex_unlock(&wl
->mutex
);
466 ieee80211_scan_completed(wl
->hw
, true);
467 mutex_lock(&wl
->mutex
);
468 wl
->scanning
= false;
471 wl
->state
= WL1251_STATE_OFF
;
473 wl1251_disable_interrupts(wl
);
475 mutex_unlock(&wl
->mutex
);
477 cancel_work_sync(&wl
->irq_work
);
478 cancel_work_sync(&wl
->tx_work
);
479 cancel_work_sync(&wl
->filter_work
);
481 mutex_lock(&wl
->mutex
);
483 /* let's notify MAC80211 about the remaining pending TX frames */
485 wl1251_power_off(wl
);
487 memset(wl
->bssid
, 0, ETH_ALEN
);
489 wl
->bss_type
= MAX_BSS_TYPE
;
491 wl
->data_in_count
= 0;
494 wl
->rx_current_buffer
= 0;
496 wl
->next_tx_complete
= 0;
499 wl
->tx_queue_stopped
= false;
500 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
501 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
503 wl1251_debugfs_reset(wl
);
505 mutex_unlock(&wl
->mutex
);
508 static int wl1251_op_add_interface(struct ieee80211_hw
*hw
,
509 struct ieee80211_vif
*vif
)
511 struct wl1251
*wl
= hw
->priv
;
514 wl1251_debug(DEBUG_MAC80211
, "mac80211 add interface type %d mac %pM",
515 vif
->type
, vif
->addr
);
517 mutex_lock(&wl
->mutex
);
526 case NL80211_IFTYPE_STATION
:
527 wl
->bss_type
= BSS_TYPE_STA_BSS
;
529 case NL80211_IFTYPE_ADHOC
:
530 wl
->bss_type
= BSS_TYPE_IBSS
;
537 if (memcmp(wl
->mac_addr
, vif
->addr
, ETH_ALEN
)) {
538 memcpy(wl
->mac_addr
, vif
->addr
, ETH_ALEN
);
539 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
540 ret
= wl1251_acx_station_id(wl
);
546 mutex_unlock(&wl
->mutex
);
550 static void wl1251_op_remove_interface(struct ieee80211_hw
*hw
,
551 struct ieee80211_vif
*vif
)
553 struct wl1251
*wl
= hw
->priv
;
555 mutex_lock(&wl
->mutex
);
556 wl1251_debug(DEBUG_MAC80211
, "mac80211 remove interface");
558 mutex_unlock(&wl
->mutex
);
561 static int wl1251_build_qos_null_data(struct wl1251
*wl
)
563 struct ieee80211_qos_hdr
template;
565 memset(&template, 0, sizeof(template));
567 memcpy(template.addr1
, wl
->bssid
, ETH_ALEN
);
568 memcpy(template.addr2
, wl
->mac_addr
, ETH_ALEN
);
569 memcpy(template.addr3
, wl
->bssid
, ETH_ALEN
);
571 template.frame_control
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
572 IEEE80211_STYPE_QOS_NULLFUNC
|
573 IEEE80211_FCTL_TODS
);
575 template.qos_ctrl
= cpu_to_le16(0);
577 return wl1251_cmd_template_set(wl
, CMD_QOS_NULL_DATA
, &template,
581 static int wl1251_op_config(struct ieee80211_hw
*hw
, u32 changed
)
583 struct wl1251
*wl
= hw
->priv
;
584 struct ieee80211_conf
*conf
= &hw
->conf
;
585 int channel
, ret
= 0;
587 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
589 wl1251_debug(DEBUG_MAC80211
, "mac80211 config ch %d psm %s power %d",
591 conf
->flags
& IEEE80211_CONF_PS
? "on" : "off",
594 mutex_lock(&wl
->mutex
);
596 ret
= wl1251_ps_elp_wakeup(wl
);
600 if (channel
!= wl
->channel
) {
601 wl
->channel
= channel
;
603 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
604 wl
->beacon_int
, wl
->dtim_period
);
609 if (conf
->flags
& IEEE80211_CONF_PS
&& !wl
->psm_requested
) {
610 wl1251_debug(DEBUG_PSM
, "psm enabled");
612 wl
->psm_requested
= true;
614 wl
->dtim_period
= conf
->ps_dtim_period
;
616 ret
= wl1251_acx_wr_tbtt_and_dtim(wl
, wl
->beacon_int
,
620 * mac80211 enables PSM only if we're already associated.
622 ret
= wl1251_ps_set_mode(wl
, STATION_POWER_SAVE_MODE
);
625 } else if (!(conf
->flags
& IEEE80211_CONF_PS
) &&
627 wl1251_debug(DEBUG_PSM
, "psm disabled");
629 wl
->psm_requested
= false;
632 ret
= wl1251_ps_set_mode(wl
, STATION_ACTIVE_MODE
);
638 if (conf
->power_level
!= wl
->power_level
) {
639 ret
= wl1251_acx_tx_power(wl
, conf
->power_level
);
643 wl
->power_level
= conf
->power_level
;
647 wl1251_ps_elp_sleep(wl
);
650 mutex_unlock(&wl
->mutex
);
655 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
658 FIF_BCN_PRBRESP_PROMISC | \
662 static void wl1251_op_configure_filter(struct ieee80211_hw
*hw
,
663 unsigned int changed
,
664 unsigned int *total
,u64 multicast
)
666 struct wl1251
*wl
= hw
->priv
;
668 wl1251_debug(DEBUG_MAC80211
, "mac80211 configure filter");
670 *total
&= WL1251_SUPPORTED_FILTERS
;
671 changed
&= WL1251_SUPPORTED_FILTERS
;
674 /* no filters which we support changed */
678 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
679 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
681 if (*total
& FIF_PROMISC_IN_BSS
) {
682 wl
->rx_config
|= CFG_BSSID_FILTER_EN
;
683 wl
->rx_config
|= CFG_RX_ALL_GOOD
;
685 if (*total
& FIF_ALLMULTI
)
687 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
688 * all multicast frames
690 wl
->rx_config
&= ~CFG_MC_FILTER_EN
;
691 if (*total
& FIF_FCSFAIL
)
692 wl
->rx_filter
|= CFG_RX_FCS_ERROR
;
693 if (*total
& FIF_BCN_PRBRESP_PROMISC
) {
694 wl
->rx_config
&= ~CFG_BSSID_FILTER_EN
;
695 wl
->rx_config
&= ~CFG_SSID_FILTER_EN
;
697 if (*total
& FIF_CONTROL
)
698 wl
->rx_filter
|= CFG_RX_CTL_EN
;
699 if (*total
& FIF_OTHER_BSS
)
700 wl
->rx_filter
&= ~CFG_BSSID_FILTER_EN
;
702 /* schedule_work(&wl->filter_work); */
706 static int wl1251_set_key_type(struct wl1251
*wl
,
707 struct wl1251_cmd_set_keys
*key
,
708 enum set_key_cmd cmd
,
709 struct ieee80211_key_conf
*mac80211_key
,
712 switch (mac80211_key
->alg
) {
714 if (is_broadcast_ether_addr(addr
))
715 key
->key_type
= KEY_WEP_DEFAULT
;
717 key
->key_type
= KEY_WEP_ADDR
;
719 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
722 if (is_broadcast_ether_addr(addr
))
723 key
->key_type
= KEY_TKIP_MIC_GROUP
;
725 key
->key_type
= KEY_TKIP_MIC_PAIRWISE
;
727 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
730 if (is_broadcast_ether_addr(addr
))
731 key
->key_type
= KEY_AES_GROUP
;
733 key
->key_type
= KEY_AES_PAIRWISE
;
734 mac80211_key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
737 wl1251_error("Unknown key algo 0x%x", mac80211_key
->alg
);
744 static int wl1251_op_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
745 struct ieee80211_vif
*vif
,
746 struct ieee80211_sta
*sta
,
747 struct ieee80211_key_conf
*key
)
749 struct wl1251
*wl
= hw
->priv
;
750 struct wl1251_cmd_set_keys
*wl_cmd
;
754 static const u8 bcast_addr
[ETH_ALEN
] =
755 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
757 wl1251_debug(DEBUG_MAC80211
, "mac80211 set key");
759 wl_cmd
= kzalloc(sizeof(*wl_cmd
), GFP_KERNEL
);
765 addr
= sta
? sta
->addr
: bcast_addr
;
767 wl1251_debug(DEBUG_CRYPT
, "CMD: 0x%x", cmd
);
768 wl1251_dump(DEBUG_CRYPT
, "ADDR: ", addr
, ETH_ALEN
);
769 wl1251_debug(DEBUG_CRYPT
, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
770 key
->alg
, key
->keyidx
, key
->keylen
, key
->flags
);
771 wl1251_dump(DEBUG_CRYPT
, "KEY: ", key
->key
, key
->keylen
);
773 if (is_zero_ether_addr(addr
)) {
774 /* We dont support TX only encryption */
779 mutex_lock(&wl
->mutex
);
781 ret
= wl1251_ps_elp_wakeup(wl
);
787 wl_cmd
->key_action
= KEY_ADD_OR_REPLACE
;
790 wl_cmd
->key_action
= KEY_REMOVE
;
793 wl1251_error("Unsupported key cmd 0x%x", cmd
);
797 ret
= wl1251_set_key_type(wl
, wl_cmd
, cmd
, key
, addr
);
799 wl1251_error("Set KEY type failed");
803 if (wl_cmd
->key_type
!= KEY_WEP_DEFAULT
)
804 memcpy(wl_cmd
->addr
, addr
, ETH_ALEN
);
806 if ((wl_cmd
->key_type
== KEY_TKIP_MIC_GROUP
) ||
807 (wl_cmd
->key_type
== KEY_TKIP_MIC_PAIRWISE
)) {
809 * We get the key in the following form:
810 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
811 * but the target is expecting:
812 * TKIP - RX MIC - TX MIC
814 memcpy(wl_cmd
->key
, key
->key
, 16);
815 memcpy(wl_cmd
->key
+ 16, key
->key
+ 24, 8);
816 memcpy(wl_cmd
->key
+ 24, key
->key
+ 16, 8);
819 memcpy(wl_cmd
->key
, key
->key
, key
->keylen
);
821 wl_cmd
->key_size
= key
->keylen
;
823 wl_cmd
->id
= key
->keyidx
;
824 wl_cmd
->ssid_profile
= 0;
826 wl1251_dump(DEBUG_CRYPT
, "TARGET KEY: ", wl_cmd
, sizeof(*wl_cmd
));
828 ret
= wl1251_cmd_send(wl
, CMD_SET_KEYS
, wl_cmd
, sizeof(*wl_cmd
));
830 wl1251_warning("could not set keys");
835 wl1251_ps_elp_sleep(wl
);
838 mutex_unlock(&wl
->mutex
);
846 static int wl1251_op_hw_scan(struct ieee80211_hw
*hw
,
847 struct ieee80211_vif
*vif
,
848 struct cfg80211_scan_request
*req
)
850 struct wl1251
*wl
= hw
->priv
;
856 wl1251_debug(DEBUG_MAC80211
, "mac80211 hw scan");
859 ssid
= req
->ssids
[0].ssid
;
860 ssid_len
= req
->ssids
[0].ssid_len
;
863 mutex_lock(&wl
->mutex
);
866 wl1251_debug(DEBUG_SCAN
, "scan already in progress");
871 ret
= wl1251_ps_elp_wakeup(wl
);
875 skb
= ieee80211_probereq_get(wl
->hw
, wl
->vif
, ssid
, ssid_len
,
876 req
->ie
, req
->ie_len
);
882 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_REQ
, skb
->data
,
888 ret
= wl1251_cmd_trigger_scan_to(wl
, 0);
894 ret
= wl1251_cmd_scan(wl
, ssid
, ssid_len
, req
->channels
,
895 req
->n_channels
, WL1251_SCAN_NUM_PROBES
);
897 wl
->scanning
= false;
902 wl1251_ps_elp_sleep(wl
);
905 mutex_unlock(&wl
->mutex
);
910 static int wl1251_op_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
912 struct wl1251
*wl
= hw
->priv
;
915 mutex_lock(&wl
->mutex
);
917 ret
= wl1251_ps_elp_wakeup(wl
);
921 ret
= wl1251_acx_rts_threshold(wl
, (u16
) value
);
923 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret
);
925 wl1251_ps_elp_sleep(wl
);
928 mutex_unlock(&wl
->mutex
);
933 static void wl1251_op_bss_info_changed(struct ieee80211_hw
*hw
,
934 struct ieee80211_vif
*vif
,
935 struct ieee80211_bss_conf
*bss_conf
,
938 struct wl1251
*wl
= hw
->priv
;
939 struct sk_buff
*beacon
, *skb
;
942 wl1251_debug(DEBUG_MAC80211
, "mac80211 bss info changed");
944 mutex_lock(&wl
->mutex
);
946 ret
= wl1251_ps_elp_wakeup(wl
);
950 if (changed
& BSS_CHANGED_BSSID
) {
951 memcpy(wl
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
953 skb
= ieee80211_nullfunc_get(wl
->hw
, wl
->vif
);
957 ret
= wl1251_cmd_template_set(wl
, CMD_NULL_DATA
,
958 skb
->data
, skb
->len
);
963 ret
= wl1251_build_qos_null_data(wl
);
967 if (wl
->bss_type
!= BSS_TYPE_IBSS
) {
968 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
969 wl
->beacon_int
, wl
->dtim_period
);
975 if (changed
& BSS_CHANGED_ASSOC
) {
976 if (bss_conf
->assoc
) {
977 wl
->beacon_int
= bss_conf
->beacon_int
;
979 skb
= ieee80211_pspoll_get(wl
->hw
, wl
->vif
);
983 ret
= wl1251_cmd_template_set(wl
, CMD_PS_POLL
,
990 ret
= wl1251_acx_aid(wl
, bss_conf
->aid
);
994 /* use defaults when not associated */
995 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
996 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
999 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1000 if (bss_conf
->use_short_slot
)
1001 ret
= wl1251_acx_slot(wl
, SLOT_TIME_SHORT
);
1003 ret
= wl1251_acx_slot(wl
, SLOT_TIME_LONG
);
1005 wl1251_warning("Set slot time failed %d", ret
);
1010 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
1011 if (bss_conf
->use_short_preamble
)
1012 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_SHORT
);
1014 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_LONG
);
1017 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
1018 if (bss_conf
->use_cts_prot
)
1019 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_ENABLE
);
1021 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_DISABLE
);
1023 wl1251_warning("Set ctsprotect failed %d", ret
);
1028 if (changed
& BSS_CHANGED_BEACON
) {
1029 beacon
= ieee80211_beacon_get(hw
, vif
);
1030 ret
= wl1251_cmd_template_set(wl
, CMD_BEACON
, beacon
->data
,
1034 dev_kfree_skb(beacon
);
1038 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_RESP
, beacon
->data
,
1041 dev_kfree_skb(beacon
);
1046 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->beacon_int
,
1047 wl
->channel
, wl
->dtim_period
);
1054 wl1251_ps_elp_sleep(wl
);
1057 mutex_unlock(&wl
->mutex
);
1061 /* can't be const, mac80211 writes to this */
1062 static struct ieee80211_rate wl1251_rates
[] = {
1065 .hw_value_short
= 0x1, },
1068 .hw_value_short
= 0x2,
1069 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1072 .hw_value_short
= 0x4,
1073 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1076 .hw_value_short
= 0x20,
1077 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1080 .hw_value_short
= 0x8, },
1083 .hw_value_short
= 0x10, },
1086 .hw_value_short
= 0x40, },
1089 .hw_value_short
= 0x80, },
1092 .hw_value_short
= 0x200, },
1095 .hw_value_short
= 0x400, },
1098 .hw_value_short
= 0x800, },
1101 .hw_value_short
= 0x1000, },
1104 /* can't be const, mac80211 writes to this */
1105 static struct ieee80211_channel wl1251_channels
[] = {
1106 { .hw_value
= 1, .center_freq
= 2412},
1107 { .hw_value
= 2, .center_freq
= 2417},
1108 { .hw_value
= 3, .center_freq
= 2422},
1109 { .hw_value
= 4, .center_freq
= 2427},
1110 { .hw_value
= 5, .center_freq
= 2432},
1111 { .hw_value
= 6, .center_freq
= 2437},
1112 { .hw_value
= 7, .center_freq
= 2442},
1113 { .hw_value
= 8, .center_freq
= 2447},
1114 { .hw_value
= 9, .center_freq
= 2452},
1115 { .hw_value
= 10, .center_freq
= 2457},
1116 { .hw_value
= 11, .center_freq
= 2462},
1117 { .hw_value
= 12, .center_freq
= 2467},
1118 { .hw_value
= 13, .center_freq
= 2472},
1121 static int wl1251_op_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1122 const struct ieee80211_tx_queue_params
*params
)
1124 enum wl1251_acx_ps_scheme ps_scheme
;
1125 struct wl1251
*wl
= hw
->priv
;
1128 mutex_lock(&wl
->mutex
);
1130 wl1251_debug(DEBUG_MAC80211
, "mac80211 conf tx %d", queue
);
1132 ret
= wl1251_ps_elp_wakeup(wl
);
1136 /* mac80211 uses units of 32 usec */
1137 ret
= wl1251_acx_ac_cfg(wl
, wl1251_tx_get_queue(queue
),
1138 params
->cw_min
, params
->cw_max
,
1139 params
->aifs
, params
->txop
* 32);
1144 ps_scheme
= WL1251_ACX_PS_SCHEME_UPSD_TRIGGER
;
1146 ps_scheme
= WL1251_ACX_PS_SCHEME_LEGACY
;
1148 ret
= wl1251_acx_tid_cfg(wl
, wl1251_tx_get_queue(queue
),
1150 wl1251_tx_get_queue(queue
), ps_scheme
,
1151 WL1251_ACX_ACK_POLICY_LEGACY
);
1156 wl1251_ps_elp_sleep(wl
);
1159 mutex_unlock(&wl
->mutex
);
1164 static int wl1251_op_get_survey(struct ieee80211_hw
*hw
, int idx
,
1165 struct survey_info
*survey
)
1167 struct wl1251
*wl
= hw
->priv
;
1168 struct ieee80211_conf
*conf
= &hw
->conf
;
1173 survey
->channel
= conf
->channel
;
1174 survey
->filled
= SURVEY_INFO_NOISE_DBM
;
1175 survey
->noise
= wl
->noise
;
1180 /* can't be const, mac80211 writes to this */
1181 static struct ieee80211_supported_band wl1251_band_2ghz
= {
1182 .channels
= wl1251_channels
,
1183 .n_channels
= ARRAY_SIZE(wl1251_channels
),
1184 .bitrates
= wl1251_rates
,
1185 .n_bitrates
= ARRAY_SIZE(wl1251_rates
),
1188 static const struct ieee80211_ops wl1251_ops
= {
1189 .start
= wl1251_op_start
,
1190 .stop
= wl1251_op_stop
,
1191 .add_interface
= wl1251_op_add_interface
,
1192 .remove_interface
= wl1251_op_remove_interface
,
1193 .config
= wl1251_op_config
,
1194 .configure_filter
= wl1251_op_configure_filter
,
1196 .set_key
= wl1251_op_set_key
,
1197 .hw_scan
= wl1251_op_hw_scan
,
1198 .bss_info_changed
= wl1251_op_bss_info_changed
,
1199 .set_rts_threshold
= wl1251_op_set_rts_threshold
,
1200 .conf_tx
= wl1251_op_conf_tx
,
1201 .get_survey
= wl1251_op_get_survey
,
1204 static int wl1251_read_eeprom_byte(struct wl1251
*wl
, off_t offset
, u8
*data
)
1206 unsigned long timeout
;
1208 wl1251_reg_write32(wl
, EE_ADDR
, offset
);
1209 wl1251_reg_write32(wl
, EE_CTL
, EE_CTL_READ
);
1211 /* EE_CTL_READ clears when data is ready */
1212 timeout
= jiffies
+ msecs_to_jiffies(100);
1214 if (!(wl1251_reg_read32(wl
, EE_CTL
) & EE_CTL_READ
))
1217 if (time_after(jiffies
, timeout
))
1223 *data
= wl1251_reg_read32(wl
, EE_DATA
);
1227 static int wl1251_read_eeprom(struct wl1251
*wl
, off_t offset
,
1228 u8
*data
, size_t len
)
1233 wl1251_reg_write32(wl
, EE_START
, 0);
1235 for (i
= 0; i
< len
; i
++) {
1236 ret
= wl1251_read_eeprom_byte(wl
, offset
+ i
, &data
[i
]);
1244 static int wl1251_read_eeprom_mac(struct wl1251
*wl
)
1249 wl1251_set_partition(wl
, 0, 0, REGISTERS_BASE
, REGISTERS_DOWN_SIZE
);
1251 ret
= wl1251_read_eeprom(wl
, 0x1c, mac
, sizeof(mac
));
1253 wl1251_warning("failed to read MAC address from EEPROM");
1257 /* MAC is stored in reverse order */
1258 for (i
= 0; i
< ETH_ALEN
; i
++)
1259 wl
->mac_addr
[i
] = mac
[ETH_ALEN
- i
- 1];
1264 static int wl1251_register_hw(struct wl1251
*wl
)
1268 if (wl
->mac80211_registered
)
1271 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
1273 ret
= ieee80211_register_hw(wl
->hw
);
1275 wl1251_error("unable to register mac80211 hw: %d", ret
);
1279 wl
->mac80211_registered
= true;
1281 wl1251_notice("loaded");
1286 int wl1251_init_ieee80211(struct wl1251
*wl
)
1290 /* The tx descriptor buffer and the TKIP space */
1291 wl
->hw
->extra_tx_headroom
= sizeof(struct tx_double_buffer_desc
)
1292 + WL1251_TKIP_IV_SPACE
;
1295 wl
->hw
->channel_change_time
= 10000;
1297 wl
->hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
1298 IEEE80211_HW_SUPPORTS_PS
|
1299 IEEE80211_HW_BEACON_FILTER
|
1300 IEEE80211_HW_SUPPORTS_UAPSD
;
1302 wl
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
1303 wl
->hw
->wiphy
->max_scan_ssids
= 1;
1304 wl
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &wl1251_band_2ghz
;
1309 wl1251_read_eeprom_mac(wl
);
1311 ret
= wl1251_register_hw(wl
);
1315 wl1251_debugfs_init(wl
);
1316 wl1251_notice("initialized");
1323 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211
);
1325 struct ieee80211_hw
*wl1251_alloc_hw(void)
1327 struct ieee80211_hw
*hw
;
1330 static const u8 nokia_oui
[3] = {0x00, 0x1f, 0xdf};
1332 hw
= ieee80211_alloc_hw(sizeof(*wl
), &wl1251_ops
);
1334 wl1251_error("could not alloc ieee80211_hw");
1335 return ERR_PTR(-ENOMEM
);
1339 memset(wl
, 0, sizeof(*wl
));
1343 wl
->data_in_count
= 0;
1345 skb_queue_head_init(&wl
->tx_queue
);
1347 INIT_WORK(&wl
->filter_work
, wl1251_filter_work
);
1348 INIT_DELAYED_WORK(&wl
->elp_work
, wl1251_elp_work
);
1349 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
1350 wl
->scanning
= false;
1351 wl
->default_key
= 0;
1355 wl
->rx_current_buffer
= 0;
1357 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
1358 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
1361 wl
->psm_requested
= false;
1362 wl
->tx_queue_stopped
= false;
1363 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
1364 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1365 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1368 for (i
= 0; i
< FW_TX_CMPLT_BLOCK_SIZE
; i
++)
1369 wl
->tx_frames
[i
] = NULL
;
1371 wl
->next_tx_complete
= 0;
1373 INIT_WORK(&wl
->irq_work
, wl1251_irq_work
);
1374 INIT_WORK(&wl
->tx_work
, wl1251_tx_work
);
1377 * In case our MAC address is not correctly set,
1378 * we use a random but Nokia MAC.
1380 memcpy(wl
->mac_addr
, nokia_oui
, 3);
1381 get_random_bytes(wl
->mac_addr
+ 3, 3);
1383 wl
->state
= WL1251_STATE_OFF
;
1384 mutex_init(&wl
->mutex
);
1386 wl
->tx_mgmt_frm_rate
= DEFAULT_HW_GEN_TX_RATE
;
1387 wl
->tx_mgmt_frm_mod
= DEFAULT_HW_GEN_MODULATION_TYPE
;
1389 wl
->rx_descriptor
= kmalloc(sizeof(*wl
->rx_descriptor
), GFP_KERNEL
);
1390 if (!wl
->rx_descriptor
) {
1391 wl1251_error("could not allocate memory for rx descriptor");
1392 ieee80211_free_hw(hw
);
1393 return ERR_PTR(-ENOMEM
);
1398 EXPORT_SYMBOL_GPL(wl1251_alloc_hw
);
1400 int wl1251_free_hw(struct wl1251
*wl
)
1402 ieee80211_unregister_hw(wl
->hw
);
1404 wl1251_debugfs_exit(wl
);
1406 kfree(wl
->target_mem_map
);
1407 kfree(wl
->data_path
);
1413 kfree(wl
->rx_descriptor
);
1414 wl
->rx_descriptor
= NULL
;
1416 ieee80211_free_hw(wl
->hw
);
1420 EXPORT_SYMBOL_GPL(wl1251_free_hw
);
1422 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1423 MODULE_LICENSE("GPL");
1424 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1425 MODULE_FIRMWARE(WL1251_FW_NAME
);