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>
33 #include "wl12xx_80211.h"
34 #include "wl1251_reg.h"
35 #include "wl1251_io.h"
36 #include "wl1251_cmd.h"
37 #include "wl1251_event.h"
38 #include "wl1251_tx.h"
39 #include "wl1251_rx.h"
40 #include "wl1251_ps.h"
41 #include "wl1251_init.h"
42 #include "wl1251_debugfs.h"
43 #include "wl1251_boot.h"
45 void wl1251_enable_interrupts(struct wl1251
*wl
)
47 wl
->if_ops
->enable_irq(wl
);
50 void wl1251_disable_interrupts(struct wl1251
*wl
)
52 wl
->if_ops
->disable_irq(wl
);
55 static void wl1251_power_off(struct wl1251
*wl
)
60 static void wl1251_power_on(struct wl1251
*wl
)
65 static int wl1251_fetch_firmware(struct wl1251
*wl
)
67 const struct firmware
*fw
;
68 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
71 ret
= request_firmware(&fw
, WL1251_FW_NAME
, dev
);
74 wl1251_error("could not get firmware: %d", ret
);
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
85 wl
->fw_len
= fw
->size
;
86 wl
->fw
= kmalloc(wl
->fw_len
, GFP_KERNEL
);
89 wl1251_error("could not allocate memory for the firmware");
94 memcpy(wl
->fw
, fw
->data
, wl
->fw_len
);
104 static int wl1251_fetch_nvs(struct wl1251
*wl
)
106 const struct firmware
*fw
;
107 struct device
*dev
= wiphy_dev(wl
->hw
->wiphy
);
110 ret
= request_firmware(&fw
, WL1251_NVS_NAME
, dev
);
113 wl1251_error("could not get nvs file: %d", ret
);
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
124 wl
->nvs_len
= fw
->size
;
125 wl
->nvs
= kmalloc(wl
->nvs_len
, GFP_KERNEL
);
128 wl1251_error("could not allocate memory for the nvs file");
133 memcpy(wl
->nvs
, fw
->data
, wl
->nvs_len
);
138 release_firmware(fw
);
143 static void wl1251_fw_wakeup(struct wl1251
*wl
)
147 elp_reg
= ELPCTRL_WAKE_UP
;
148 wl1251_write32(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
, elp_reg
);
149 elp_reg
= wl1251_read32(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 /* No NVS from netlink, try to get it from the filesystem */
204 if (wl
->nvs
== NULL
) {
205 ret
= wl1251_fetch_nvs(wl
);
214 static void wl1251_irq_work(struct work_struct
*work
)
218 container_of(work
, struct wl1251
, irq_work
);
221 mutex_lock(&wl
->mutex
);
223 wl1251_debug(DEBUG_IRQ
, "IRQ work");
225 if (wl
->state
== WL1251_STATE_OFF
)
228 ret
= wl1251_ps_elp_wakeup(wl
);
232 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, WL1251_ACX_INTR_ALL
);
234 intr
= wl1251_reg_read32(wl
, ACX_REG_INTERRUPT_CLEAR
);
235 wl1251_debug(DEBUG_IRQ
, "intr: 0x%x", intr
);
239 wl1251_mem_read32(wl
, wl
->data_path
->rx_control_addr
);
241 /* We handle a frmware bug here */
242 switch ((wl
->rx_counter
- wl
->rx_handled
) & 0xf) {
244 wl1251_debug(DEBUG_IRQ
, "RX: FW and host in sync");
245 intr
&= ~WL1251_ACX_INTR_RX0_DATA
;
246 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
249 wl1251_debug(DEBUG_IRQ
, "RX: FW +1");
250 intr
|= WL1251_ACX_INTR_RX0_DATA
;
251 intr
&= ~WL1251_ACX_INTR_RX1_DATA
;
254 wl1251_debug(DEBUG_IRQ
, "RX: FW +2");
255 intr
|= WL1251_ACX_INTR_RX0_DATA
;
256 intr
|= WL1251_ACX_INTR_RX1_DATA
;
259 wl1251_warning("RX: FW and host out of sync: %d",
260 wl
->rx_counter
- wl
->rx_handled
);
264 wl
->rx_handled
= wl
->rx_counter
;
267 wl1251_debug(DEBUG_IRQ
, "RX counter: %d", wl
->rx_counter
);
270 intr
&= wl
->intr_mask
;
273 wl1251_debug(DEBUG_IRQ
, "INTR is 0");
274 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
,
280 if (intr
& WL1251_ACX_INTR_RX0_DATA
) {
281 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX0_DATA");
285 if (intr
& WL1251_ACX_INTR_RX1_DATA
) {
286 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_RX1_DATA");
290 if (intr
& WL1251_ACX_INTR_TX_RESULT
) {
291 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_TX_RESULT");
292 wl1251_tx_complete(wl
);
295 if (intr
& (WL1251_ACX_INTR_EVENT_A
| WL1251_ACX_INTR_EVENT_B
)) {
296 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_EVENT (0x%x)", intr
);
297 if (intr
& WL1251_ACX_INTR_EVENT_A
)
298 wl1251_event_handle(wl
, 0);
300 wl1251_event_handle(wl
, 1);
303 if (intr
& WL1251_ACX_INTR_INIT_COMPLETE
)
304 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_INIT_COMPLETE");
306 wl1251_reg_write32(wl
, ACX_REG_INTERRUPT_MASK
, ~(wl
->intr_mask
));
309 wl1251_ps_elp_sleep(wl
);
312 mutex_unlock(&wl
->mutex
);
315 static int wl1251_join(struct wl1251
*wl
, u8 bss_type
, u8 channel
,
316 u16 beacon_interval
, u8 dtim_period
)
320 ret
= wl1251_acx_frame_rates(wl
, DEFAULT_HW_GEN_TX_RATE
,
321 DEFAULT_HW_GEN_MODULATION_TYPE
,
322 wl
->tx_mgmt_frm_rate
,
323 wl
->tx_mgmt_frm_mod
);
328 ret
= wl1251_cmd_join(wl
, bss_type
, channel
, beacon_interval
,
334 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
335 * locking we just sleep instead, for now
343 static void wl1251_filter_work(struct work_struct
*work
)
346 container_of(work
, struct wl1251
, filter_work
);
349 mutex_lock(&wl
->mutex
);
351 if (wl
->state
== WL1251_STATE_OFF
)
354 ret
= wl1251_ps_elp_wakeup(wl
);
358 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
, wl
->beacon_int
,
364 wl1251_ps_elp_sleep(wl
);
367 mutex_unlock(&wl
->mutex
);
370 static int wl1251_op_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
372 struct wl1251
*wl
= hw
->priv
;
374 skb_queue_tail(&wl
->tx_queue
, skb
);
377 * The chip specific setup must run before the first TX packet -
378 * before that, the tx_work will not be initialized!
381 ieee80211_queue_work(wl
->hw
, &wl
->tx_work
);
384 * The workqueue is slow to process the tx_queue and we need stop
385 * the queue here, otherwise the queue will get too long.
387 if (skb_queue_len(&wl
->tx_queue
) >= WL1251_TX_QUEUE_MAX_LENGTH
) {
388 ieee80211_stop_queues(wl
->hw
);
391 * FIXME: this is racy, the variable is not properly
392 * protected. Maybe fix this by removing the stupid
393 * variable altogether and checking the real queue state?
395 wl
->tx_queue_stopped
= true;
401 static int wl1251_op_start(struct ieee80211_hw
*hw
)
403 struct wl1251
*wl
= hw
->priv
;
406 wl1251_debug(DEBUG_MAC80211
, "mac80211 start");
408 mutex_lock(&wl
->mutex
);
410 if (wl
->state
!= WL1251_STATE_OFF
) {
411 wl1251_error("cannot start because not in off state: %d",
417 ret
= wl1251_chip_wakeup(wl
);
421 ret
= wl1251_boot(wl
);
425 ret
= wl1251_hw_init(wl
);
429 ret
= wl1251_acx_station_id(wl
);
433 wl
->state
= WL1251_STATE_ON
;
435 wl1251_info("firmware booted (%s)", wl
->fw_ver
);
439 wl1251_power_off(wl
);
441 mutex_unlock(&wl
->mutex
);
446 static void wl1251_op_stop(struct ieee80211_hw
*hw
)
448 struct wl1251
*wl
= hw
->priv
;
452 wl1251_debug(DEBUG_MAC80211
, "mac80211 stop");
454 mutex_lock(&wl
->mutex
);
456 WARN_ON(wl
->state
!= WL1251_STATE_ON
);
459 mutex_unlock(&wl
->mutex
);
460 ieee80211_scan_completed(wl
->hw
, true);
461 mutex_lock(&wl
->mutex
);
462 wl
->scanning
= false;
465 wl
->state
= WL1251_STATE_OFF
;
467 wl1251_disable_interrupts(wl
);
469 mutex_unlock(&wl
->mutex
);
471 cancel_work_sync(&wl
->irq_work
);
472 cancel_work_sync(&wl
->tx_work
);
473 cancel_work_sync(&wl
->filter_work
);
475 mutex_lock(&wl
->mutex
);
477 /* let's notify MAC80211 about the remaining pending TX frames */
479 wl1251_power_off(wl
);
481 memset(wl
->bssid
, 0, ETH_ALEN
);
483 wl
->bss_type
= MAX_BSS_TYPE
;
485 wl
->data_in_count
= 0;
488 wl
->rx_current_buffer
= 0;
490 wl
->next_tx_complete
= 0;
493 wl
->tx_queue_stopped
= false;
494 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
495 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
497 wl1251_debugfs_reset(wl
);
499 mutex_unlock(&wl
->mutex
);
502 static int wl1251_op_add_interface(struct ieee80211_hw
*hw
,
503 struct ieee80211_if_init_conf
*conf
)
505 struct wl1251
*wl
= hw
->priv
;
508 wl1251_debug(DEBUG_MAC80211
, "mac80211 add interface type %d mac %pM",
509 conf
->type
, conf
->mac_addr
);
511 mutex_lock(&wl
->mutex
);
513 switch (conf
->type
) {
514 case NL80211_IFTYPE_STATION
:
515 wl
->bss_type
= BSS_TYPE_STA_BSS
;
517 case NL80211_IFTYPE_ADHOC
:
518 wl
->bss_type
= BSS_TYPE_IBSS
;
525 if (memcmp(wl
->mac_addr
, conf
->mac_addr
, ETH_ALEN
)) {
526 memcpy(wl
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
527 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
528 ret
= wl1251_acx_station_id(wl
);
534 mutex_unlock(&wl
->mutex
);
538 static void wl1251_op_remove_interface(struct ieee80211_hw
*hw
,
539 struct ieee80211_if_init_conf
*conf
)
541 wl1251_debug(DEBUG_MAC80211
, "mac80211 remove interface");
544 static int wl1251_build_null_data(struct wl1251
*wl
)
546 struct wl12xx_null_data_template
template;
548 if (!is_zero_ether_addr(wl
->bssid
)) {
549 memcpy(template.header
.da
, wl
->bssid
, ETH_ALEN
);
550 memcpy(template.header
.bssid
, wl
->bssid
, ETH_ALEN
);
552 memset(template.header
.da
, 0xff, ETH_ALEN
);
553 memset(template.header
.bssid
, 0xff, ETH_ALEN
);
556 memcpy(template.header
.sa
, wl
->mac_addr
, ETH_ALEN
);
557 template.header
.frame_ctl
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
558 IEEE80211_STYPE_NULLFUNC
);
560 return wl1251_cmd_template_set(wl
, CMD_NULL_DATA
, &template,
565 static int wl1251_build_ps_poll(struct wl1251
*wl
, u16 aid
)
567 struct wl12xx_ps_poll_template
template;
569 memcpy(template.bssid
, wl
->bssid
, ETH_ALEN
);
570 memcpy(template.ta
, wl
->mac_addr
, ETH_ALEN
);
572 template.fc
= cpu_to_le16(IEEE80211_FTYPE_CTL
| IEEE80211_STYPE_PSPOLL
);
574 return wl1251_cmd_template_set(wl
, CMD_PS_POLL
, &template,
579 static int wl1251_op_config(struct ieee80211_hw
*hw
, u32 changed
)
581 struct wl1251
*wl
= hw
->priv
;
582 struct ieee80211_conf
*conf
= &hw
->conf
;
583 int channel
, ret
= 0;
585 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
587 wl1251_debug(DEBUG_MAC80211
, "mac80211 config ch %d psm %s power %d",
589 conf
->flags
& IEEE80211_CONF_PS
? "on" : "off",
592 mutex_lock(&wl
->mutex
);
594 ret
= wl1251_ps_elp_wakeup(wl
);
598 if (channel
!= wl
->channel
) {
599 wl
->channel
= channel
;
601 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
602 wl
->beacon_int
, wl
->dtim_period
);
607 ret
= wl1251_build_null_data(wl
);
611 if (conf
->flags
& IEEE80211_CONF_PS
&& !wl
->psm_requested
) {
612 wl1251_debug(DEBUG_PSM
, "psm enabled");
614 wl
->psm_requested
= true;
617 * We enter PSM only if we're already associated.
618 * If we're not, we'll enter it when joining an SSID,
619 * through the bss_info_changed() hook.
621 ret
= wl1251_ps_set_mode(wl
, STATION_POWER_SAVE_MODE
);
622 } else if (!(conf
->flags
& IEEE80211_CONF_PS
) &&
624 wl1251_debug(DEBUG_PSM
, "psm disabled");
626 wl
->psm_requested
= false;
629 ret
= wl1251_ps_set_mode(wl
, STATION_ACTIVE_MODE
);
632 if (conf
->power_level
!= wl
->power_level
) {
633 ret
= wl1251_acx_tx_power(wl
, conf
->power_level
);
637 wl
->power_level
= conf
->power_level
;
641 wl1251_ps_elp_sleep(wl
);
644 mutex_unlock(&wl
->mutex
);
649 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
652 FIF_BCN_PRBRESP_PROMISC | \
656 static void wl1251_op_configure_filter(struct ieee80211_hw
*hw
,
657 unsigned int changed
,
658 unsigned int *total
,u64 multicast
)
660 struct wl1251
*wl
= hw
->priv
;
662 wl1251_debug(DEBUG_MAC80211
, "mac80211 configure filter");
664 *total
&= WL1251_SUPPORTED_FILTERS
;
665 changed
&= WL1251_SUPPORTED_FILTERS
;
668 /* no filters which we support changed */
671 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
673 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
674 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
676 if (*total
& FIF_PROMISC_IN_BSS
) {
677 wl
->rx_config
|= CFG_BSSID_FILTER_EN
;
678 wl
->rx_config
|= CFG_RX_ALL_GOOD
;
680 if (*total
& FIF_ALLMULTI
)
682 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
683 * all multicast frames
685 wl
->rx_config
&= ~CFG_MC_FILTER_EN
;
686 if (*total
& FIF_FCSFAIL
)
687 wl
->rx_filter
|= CFG_RX_FCS_ERROR
;
688 if (*total
& FIF_BCN_PRBRESP_PROMISC
) {
689 wl
->rx_config
&= ~CFG_BSSID_FILTER_EN
;
690 wl
->rx_config
&= ~CFG_SSID_FILTER_EN
;
692 if (*total
& FIF_CONTROL
)
693 wl
->rx_filter
|= CFG_RX_CTL_EN
;
694 if (*total
& FIF_OTHER_BSS
)
695 wl
->rx_filter
&= ~CFG_BSSID_FILTER_EN
;
698 * FIXME: workqueues need to be properly cancelled on stop(), for
699 * now let's just disable changing the filter settings. They will
700 * be updated any on config().
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_build_basic_rates(char *rates
)
850 rates
[index
++] = IEEE80211_BASIC_RATE_MASK
| IEEE80211_CCK_RATE_1MB
;
851 rates
[index
++] = IEEE80211_BASIC_RATE_MASK
| IEEE80211_CCK_RATE_2MB
;
852 rates
[index
++] = IEEE80211_BASIC_RATE_MASK
| IEEE80211_CCK_RATE_5MB
;
853 rates
[index
++] = IEEE80211_BASIC_RATE_MASK
| IEEE80211_CCK_RATE_11MB
;
858 static int wl1251_build_extended_rates(char *rates
)
862 rates
[index
++] = IEEE80211_OFDM_RATE_6MB
;
863 rates
[index
++] = IEEE80211_OFDM_RATE_9MB
;
864 rates
[index
++] = IEEE80211_OFDM_RATE_12MB
;
865 rates
[index
++] = IEEE80211_OFDM_RATE_18MB
;
866 rates
[index
++] = IEEE80211_OFDM_RATE_24MB
;
867 rates
[index
++] = IEEE80211_OFDM_RATE_36MB
;
868 rates
[index
++] = IEEE80211_OFDM_RATE_48MB
;
869 rates
[index
++] = IEEE80211_OFDM_RATE_54MB
;
875 static int wl1251_build_probe_req(struct wl1251
*wl
, u8
*ssid
, size_t ssid_len
)
877 struct wl12xx_probe_req_template
template;
878 struct wl12xx_ie_rates
*rates
;
882 ptr
= (char *)&template;
883 size
= sizeof(struct ieee80211_header
);
885 memset(template.header
.da
, 0xff, ETH_ALEN
);
886 memset(template.header
.bssid
, 0xff, ETH_ALEN
);
887 memcpy(template.header
.sa
, wl
->mac_addr
, ETH_ALEN
);
888 template.header
.frame_ctl
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
892 template.ssid
.header
.id
= WLAN_EID_SSID
;
893 template.ssid
.header
.len
= ssid_len
;
894 if (ssid_len
&& ssid
)
895 memcpy(template.ssid
.ssid
, ssid
, ssid_len
);
896 size
+= sizeof(struct wl12xx_ie_header
) + ssid_len
;
900 rates
= (struct wl12xx_ie_rates
*)ptr
;
901 rates
->header
.id
= WLAN_EID_SUPP_RATES
;
902 rates
->header
.len
= wl1251_build_basic_rates(rates
->rates
);
903 size
+= sizeof(struct wl12xx_ie_header
) + rates
->header
.len
;
904 ptr
+= sizeof(struct wl12xx_ie_header
) + rates
->header
.len
;
907 rates
= (struct wl12xx_ie_rates
*)ptr
;
908 rates
->header
.id
= WLAN_EID_EXT_SUPP_RATES
;
909 rates
->header
.len
= wl1251_build_extended_rates(rates
->rates
);
910 size
+= sizeof(struct wl12xx_ie_header
) + rates
->header
.len
;
912 wl1251_dump(DEBUG_SCAN
, "PROBE REQ: ", &template, size
);
914 return wl1251_cmd_template_set(wl
, CMD_PROBE_REQ
, &template,
918 static int wl1251_hw_scan(struct wl1251
*wl
, u8
*ssid
, size_t len
,
919 u8 active_scan
, u8 high_prio
, u8 num_channels
,
922 struct wl1251_cmd_trigger_scan_to
*trigger
= NULL
;
923 struct cmd_scan
*params
= NULL
;
925 u16 scan_options
= 0;
930 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
934 params
->params
.rx_config_options
= cpu_to_le32(CFG_RX_ALL_GOOD
);
935 params
->params
.rx_filter_options
=
936 cpu_to_le32(CFG_RX_PRSP_EN
| CFG_RX_MGMT_EN
| CFG_RX_BCN_EN
);
938 /* High priority scan */
940 scan_options
|= SCAN_PASSIVE
;
942 scan_options
|= SCAN_PRIORITY_HIGH
;
943 params
->params
.scan_options
= scan_options
;
945 params
->params
.num_channels
= num_channels
;
946 params
->params
.num_probe_requests
= probe_requests
;
947 params
->params
.tx_rate
= cpu_to_le16(1 << 1); /* 2 Mbps */
948 params
->params
.tid_trigger
= 0;
950 for (i
= 0; i
< num_channels
; i
++) {
951 params
->channels
[i
].min_duration
= cpu_to_le32(30000);
952 params
->channels
[i
].max_duration
= cpu_to_le32(60000);
953 memset(¶ms
->channels
[i
].bssid_lsb
, 0xff, 4);
954 memset(¶ms
->channels
[i
].bssid_msb
, 0xff, 2);
955 params
->channels
[i
].early_termination
= 0;
956 params
->channels
[i
].tx_power_att
= 0;
957 params
->channels
[i
].channel
= i
+ 1;
958 memset(params
->channels
[i
].pad
, 0, 3);
961 for (i
= num_channels
; i
< SCAN_MAX_NUM_OF_CHANNELS
; i
++)
962 memset(¶ms
->channels
[i
], 0,
963 sizeof(struct basic_scan_channel_parameters
));
966 params
->params
.ssid_len
= len
;
967 memcpy(params
->params
.ssid
, ssid
, len
);
969 params
->params
.ssid_len
= 0;
970 memset(params
->params
.ssid
, 0, 32);
973 ret
= wl1251_build_probe_req(wl
, ssid
, len
);
975 wl1251_error("PROBE request template failed");
979 trigger
= kzalloc(sizeof(*trigger
), GFP_KERNEL
);
983 trigger
->timeout
= 0;
985 ret
= wl1251_cmd_send(wl
, CMD_TRIGGER_SCAN_TO
, trigger
,
988 wl1251_error("trigger scan to failed for hw scan");
992 wl1251_dump(DEBUG_SCAN
, "SCAN: ", params
, sizeof(*params
));
996 ret
= wl1251_cmd_send(wl
, CMD_SCAN
, params
, sizeof(*params
));
998 wl1251_error("SCAN failed");
1000 wl1251_mem_read(wl
, wl
->cmd_box_addr
, params
, sizeof(*params
));
1002 if (params
->header
.status
!= CMD_STATUS_SUCCESS
) {
1003 wl1251_error("TEST command answer error: %d",
1004 params
->header
.status
);
1005 wl
->scanning
= false;
1016 static int wl1251_op_hw_scan(struct ieee80211_hw
*hw
,
1017 struct cfg80211_scan_request
*req
)
1019 struct wl1251
*wl
= hw
->priv
;
1022 size_t ssid_len
= 0;
1024 wl1251_debug(DEBUG_MAC80211
, "mac80211 hw scan");
1027 ssid
= req
->ssids
[0].ssid
;
1028 ssid_len
= req
->ssids
[0].ssid_len
;
1031 mutex_lock(&wl
->mutex
);
1033 ret
= wl1251_ps_elp_wakeup(wl
);
1037 ret
= wl1251_hw_scan(hw
->priv
, ssid
, ssid_len
, 1, 0, 13, 3);
1039 wl1251_ps_elp_sleep(wl
);
1042 mutex_unlock(&wl
->mutex
);
1047 static int wl1251_op_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
1049 struct wl1251
*wl
= hw
->priv
;
1052 mutex_lock(&wl
->mutex
);
1054 ret
= wl1251_ps_elp_wakeup(wl
);
1058 ret
= wl1251_acx_rts_threshold(wl
, (u16
) value
);
1060 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret
);
1062 wl1251_ps_elp_sleep(wl
);
1065 mutex_unlock(&wl
->mutex
);
1070 static void wl1251_op_bss_info_changed(struct ieee80211_hw
*hw
,
1071 struct ieee80211_vif
*vif
,
1072 struct ieee80211_bss_conf
*bss_conf
,
1075 enum wl1251_cmd_ps_mode mode
;
1076 struct wl1251
*wl
= hw
->priv
;
1077 struct sk_buff
*beacon
;
1080 wl1251_debug(DEBUG_MAC80211
, "mac80211 bss info changed");
1082 mutex_lock(&wl
->mutex
);
1084 ret
= wl1251_ps_elp_wakeup(wl
);
1088 if (changed
& BSS_CHANGED_ASSOC
) {
1089 if (bss_conf
->assoc
) {
1090 wl
->beacon_int
= bss_conf
->beacon_int
;
1091 wl
->dtim_period
= bss_conf
->dtim_period
;
1093 /* FIXME: call join */
1095 wl
->aid
= bss_conf
->aid
;
1097 ret
= wl1251_build_ps_poll(wl
, wl
->aid
);
1101 ret
= wl1251_acx_aid(wl
, wl
->aid
);
1105 /* If we want to go in PSM but we're not there yet */
1106 if (wl
->psm_requested
&& !wl
->psm
) {
1107 mode
= STATION_POWER_SAVE_MODE
;
1108 ret
= wl1251_ps_set_mode(wl
, mode
);
1113 /* use defaults when not associated */
1114 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1115 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1118 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1119 if (bss_conf
->use_short_slot
)
1120 ret
= wl1251_acx_slot(wl
, SLOT_TIME_SHORT
);
1122 ret
= wl1251_acx_slot(wl
, SLOT_TIME_LONG
);
1124 wl1251_warning("Set slot time failed %d", ret
);
1129 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
1130 if (bss_conf
->use_short_preamble
)
1131 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_SHORT
);
1133 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_LONG
);
1136 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
1137 if (bss_conf
->use_cts_prot
)
1138 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_ENABLE
);
1140 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_DISABLE
);
1142 wl1251_warning("Set ctsprotect failed %d", ret
);
1147 if (changed
& BSS_CHANGED_BSSID
) {
1148 memcpy(wl
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
1150 ret
= wl1251_build_null_data(wl
);
1154 if (wl
->bss_type
!= BSS_TYPE_IBSS
) {
1155 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
1156 wl
->beacon_int
, wl
->dtim_period
);
1159 wl1251_warning("Set ctsprotect failed %d", ret
);
1164 if (changed
& BSS_CHANGED_BEACON
) {
1165 beacon
= ieee80211_beacon_get(hw
, vif
);
1166 ret
= wl1251_cmd_template_set(wl
, CMD_BEACON
, beacon
->data
,
1170 dev_kfree_skb(beacon
);
1174 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_RESP
, beacon
->data
,
1177 dev_kfree_skb(beacon
);
1182 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->beacon_int
,
1183 wl
->channel
, wl
->dtim_period
);
1190 wl1251_ps_elp_sleep(wl
);
1193 mutex_unlock(&wl
->mutex
);
1197 /* can't be const, mac80211 writes to this */
1198 static struct ieee80211_rate wl1251_rates
[] = {
1201 .hw_value_short
= 0x1, },
1204 .hw_value_short
= 0x2,
1205 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1208 .hw_value_short
= 0x4,
1209 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1212 .hw_value_short
= 0x20,
1213 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1216 .hw_value_short
= 0x8, },
1219 .hw_value_short
= 0x10, },
1222 .hw_value_short
= 0x40, },
1225 .hw_value_short
= 0x80, },
1228 .hw_value_short
= 0x200, },
1231 .hw_value_short
= 0x400, },
1234 .hw_value_short
= 0x800, },
1237 .hw_value_short
= 0x1000, },
1240 /* can't be const, mac80211 writes to this */
1241 static struct ieee80211_channel wl1251_channels
[] = {
1242 { .hw_value
= 1, .center_freq
= 2412},
1243 { .hw_value
= 2, .center_freq
= 2417},
1244 { .hw_value
= 3, .center_freq
= 2422},
1245 { .hw_value
= 4, .center_freq
= 2427},
1246 { .hw_value
= 5, .center_freq
= 2432},
1247 { .hw_value
= 6, .center_freq
= 2437},
1248 { .hw_value
= 7, .center_freq
= 2442},
1249 { .hw_value
= 8, .center_freq
= 2447},
1250 { .hw_value
= 9, .center_freq
= 2452},
1251 { .hw_value
= 10, .center_freq
= 2457},
1252 { .hw_value
= 11, .center_freq
= 2462},
1253 { .hw_value
= 12, .center_freq
= 2467},
1254 { .hw_value
= 13, .center_freq
= 2472},
1257 /* can't be const, mac80211 writes to this */
1258 static struct ieee80211_supported_band wl1251_band_2ghz
= {
1259 .channels
= wl1251_channels
,
1260 .n_channels
= ARRAY_SIZE(wl1251_channels
),
1261 .bitrates
= wl1251_rates
,
1262 .n_bitrates
= ARRAY_SIZE(wl1251_rates
),
1265 static const struct ieee80211_ops wl1251_ops
= {
1266 .start
= wl1251_op_start
,
1267 .stop
= wl1251_op_stop
,
1268 .add_interface
= wl1251_op_add_interface
,
1269 .remove_interface
= wl1251_op_remove_interface
,
1270 .config
= wl1251_op_config
,
1271 .configure_filter
= wl1251_op_configure_filter
,
1273 .set_key
= wl1251_op_set_key
,
1274 .hw_scan
= wl1251_op_hw_scan
,
1275 .bss_info_changed
= wl1251_op_bss_info_changed
,
1276 .set_rts_threshold
= wl1251_op_set_rts_threshold
,
1279 static int wl1251_register_hw(struct wl1251
*wl
)
1283 if (wl
->mac80211_registered
)
1286 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
1288 ret
= ieee80211_register_hw(wl
->hw
);
1290 wl1251_error("unable to register mac80211 hw: %d", ret
);
1294 wl
->mac80211_registered
= true;
1296 wl1251_notice("loaded");
1301 int wl1251_init_ieee80211(struct wl1251
*wl
)
1305 /* The tx descriptor buffer and the TKIP space */
1306 wl
->hw
->extra_tx_headroom
= sizeof(struct tx_double_buffer_desc
)
1307 + WL1251_TKIP_IV_SPACE
;
1310 /* FIXME: find a proper value */
1311 wl
->hw
->channel_change_time
= 10000;
1313 wl
->hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
1314 IEEE80211_HW_NOISE_DBM
|
1315 IEEE80211_HW_SUPPORTS_PS
;
1317 wl
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
1318 wl
->hw
->wiphy
->max_scan_ssids
= 1;
1319 wl
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &wl1251_band_2ghz
;
1321 ret
= wl1251_register_hw(wl
);
1325 wl1251_debugfs_init(wl
);
1326 wl1251_notice("initialized");
1333 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211
);
1335 struct ieee80211_hw
*wl1251_alloc_hw(void)
1337 struct ieee80211_hw
*hw
;
1340 static const u8 nokia_oui
[3] = {0x00, 0x1f, 0xdf};
1342 hw
= ieee80211_alloc_hw(sizeof(*wl
), &wl1251_ops
);
1344 wl1251_error("could not alloc ieee80211_hw");
1345 return ERR_PTR(-ENOMEM
);
1349 memset(wl
, 0, sizeof(*wl
));
1353 wl
->data_in_count
= 0;
1355 skb_queue_head_init(&wl
->tx_queue
);
1357 INIT_WORK(&wl
->filter_work
, wl1251_filter_work
);
1358 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
1359 wl
->scanning
= false;
1360 wl
->default_key
= 0;
1364 wl
->rx_current_buffer
= 0;
1366 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
1367 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
1370 wl
->psm_requested
= false;
1371 wl
->tx_queue_stopped
= false;
1372 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
1373 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1374 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1376 for (i
= 0; i
< FW_TX_CMPLT_BLOCK_SIZE
; i
++)
1377 wl
->tx_frames
[i
] = NULL
;
1379 wl
->next_tx_complete
= 0;
1381 INIT_WORK(&wl
->irq_work
, wl1251_irq_work
);
1382 INIT_WORK(&wl
->tx_work
, wl1251_tx_work
);
1385 * In case our MAC address is not correctly set,
1386 * we use a random but Nokia MAC.
1388 memcpy(wl
->mac_addr
, nokia_oui
, 3);
1389 get_random_bytes(wl
->mac_addr
+ 3, 3);
1391 wl
->state
= WL1251_STATE_OFF
;
1392 mutex_init(&wl
->mutex
);
1394 wl
->tx_mgmt_frm_rate
= DEFAULT_HW_GEN_TX_RATE
;
1395 wl
->tx_mgmt_frm_mod
= DEFAULT_HW_GEN_MODULATION_TYPE
;
1397 wl
->rx_descriptor
= kmalloc(sizeof(*wl
->rx_descriptor
), GFP_KERNEL
);
1398 if (!wl
->rx_descriptor
) {
1399 wl1251_error("could not allocate memory for rx descriptor");
1400 ieee80211_free_hw(hw
);
1401 return ERR_PTR(-ENOMEM
);
1406 EXPORT_SYMBOL_GPL(wl1251_alloc_hw
);
1408 int wl1251_free_hw(struct wl1251
*wl
)
1410 ieee80211_unregister_hw(wl
->hw
);
1412 wl1251_debugfs_exit(wl
);
1414 kfree(wl
->target_mem_map
);
1415 kfree(wl
->data_path
);
1421 kfree(wl
->rx_descriptor
);
1422 wl
->rx_descriptor
= NULL
;
1424 ieee80211_free_hw(wl
->hw
);
1428 EXPORT_SYMBOL_GPL(wl1251_free_hw
);
1430 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1431 MODULE_LICENSE("GPL");
1432 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1433 MODULE_ALIAS("spi:wl1251");