2 * This file is part of wl1251
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/firmware.h>
25 #include <linux/delay.h>
26 #include <linux/irq.h>
27 #include <linux/crc32.h>
28 #include <linux/etherdevice.h>
29 #include <linux/vmalloc.h>
30 #include <linux/slab.h>
33 #include "wl12xx_80211.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 int wl1251_power_off(struct wl1251
*wl
)
57 return wl
->if_ops
->power(wl
, false);
60 static int wl1251_power_on(struct wl1251
*wl
)
62 return wl
->if_ops
->power(wl
, true);
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
= vmalloc(wl
->fw_len
);
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
= kmemdup(fw
->data
, wl
->nvs_len
, GFP_KERNEL
);
128 wl1251_error("could not allocate memory for the nvs file");
136 release_firmware(fw
);
141 static void wl1251_fw_wakeup(struct wl1251
*wl
)
145 elp_reg
= ELPCTRL_WAKE_UP
;
146 wl1251_write_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
, elp_reg
);
147 elp_reg
= wl1251_read_elp(wl
, HW_ACCESS_ELP_CTRL_REG_ADDR
);
149 if (!(elp_reg
& ELPCTRL_WLAN_READY
))
150 wl1251_warning("WLAN not ready");
153 static int wl1251_chip_wakeup(struct wl1251
*wl
)
157 ret
= wl1251_power_on(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_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl
, 0);
302 if (intr
& WL1251_ACX_INTR_EVENT_B
) {
303 wl1251_debug(DEBUG_IRQ
, "WL1251_ACX_INTR_EVENT_B");
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
,
343 ret
= wl1251_event_wait(wl
, JOIN_EVENT_COMPLETE_ID
, 100);
345 wl1251_warning("join timeout");
351 static void wl1251_filter_work(struct work_struct
*work
)
354 container_of(work
, struct wl1251
, filter_work
);
357 mutex_lock(&wl
->mutex
);
359 if (wl
->state
== WL1251_STATE_OFF
)
362 ret
= wl1251_ps_elp_wakeup(wl
);
366 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
, wl
->beacon_int
,
372 wl1251_ps_elp_sleep(wl
);
375 mutex_unlock(&wl
->mutex
);
378 static void wl1251_op_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
380 struct wl1251
*wl
= hw
->priv
;
383 skb_queue_tail(&wl
->tx_queue
, skb
);
386 * The chip specific setup must run before the first TX packet -
387 * before that, the tx_work will not be initialized!
390 ieee80211_queue_work(wl
->hw
, &wl
->tx_work
);
393 * The workqueue is slow to process the tx_queue and we need stop
394 * the queue here, otherwise the queue will get too long.
396 if (skb_queue_len(&wl
->tx_queue
) >= WL1251_TX_QUEUE_HIGH_WATERMARK
) {
397 wl1251_debug(DEBUG_TX
, "op_tx: tx_queue full, stop queues");
399 spin_lock_irqsave(&wl
->wl_lock
, flags
);
400 ieee80211_stop_queues(wl
->hw
);
401 wl
->tx_queue_stopped
= true;
402 spin_unlock_irqrestore(&wl
->wl_lock
, flags
);
406 static int wl1251_op_start(struct ieee80211_hw
*hw
)
408 struct wl1251
*wl
= hw
->priv
;
409 struct wiphy
*wiphy
= hw
->wiphy
;
412 wl1251_debug(DEBUG_MAC80211
, "mac80211 start");
414 mutex_lock(&wl
->mutex
);
416 if (wl
->state
!= WL1251_STATE_OFF
) {
417 wl1251_error("cannot start because not in off state: %d",
423 ret
= wl1251_chip_wakeup(wl
);
427 ret
= wl1251_boot(wl
);
431 ret
= wl1251_hw_init(wl
);
435 ret
= wl1251_acx_station_id(wl
);
439 wl
->state
= WL1251_STATE_ON
;
441 wl1251_info("firmware booted (%s)", wl
->fw_ver
);
443 /* update hw/fw version info in wiphy struct */
444 wiphy
->hw_version
= wl
->chip_id
;
445 strncpy(wiphy
->fw_version
, wl
->fw_ver
, sizeof(wiphy
->fw_version
));
449 wl1251_power_off(wl
);
451 mutex_unlock(&wl
->mutex
);
456 static void wl1251_op_stop(struct ieee80211_hw
*hw
)
458 struct wl1251
*wl
= hw
->priv
;
462 wl1251_debug(DEBUG_MAC80211
, "mac80211 stop");
464 mutex_lock(&wl
->mutex
);
466 WARN_ON(wl
->state
!= WL1251_STATE_ON
);
469 ieee80211_scan_completed(wl
->hw
, true);
470 wl
->scanning
= false;
473 wl
->state
= WL1251_STATE_OFF
;
475 wl1251_disable_interrupts(wl
);
477 mutex_unlock(&wl
->mutex
);
479 cancel_work_sync(&wl
->irq_work
);
480 cancel_work_sync(&wl
->tx_work
);
481 cancel_work_sync(&wl
->filter_work
);
483 mutex_lock(&wl
->mutex
);
485 /* let's notify MAC80211 about the remaining pending TX frames */
487 wl1251_power_off(wl
);
489 memset(wl
->bssid
, 0, ETH_ALEN
);
491 wl
->bss_type
= MAX_BSS_TYPE
;
493 wl
->data_in_count
= 0;
496 wl
->rx_current_buffer
= 0;
498 wl
->next_tx_complete
= 0;
500 wl
->station_mode
= STATION_ACTIVE_MODE
;
501 wl
->tx_queue_stopped
= false;
502 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
504 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
506 wl1251_debugfs_reset(wl
);
508 mutex_unlock(&wl
->mutex
);
511 static int wl1251_op_add_interface(struct ieee80211_hw
*hw
,
512 struct ieee80211_vif
*vif
)
514 struct wl1251
*wl
= hw
->priv
;
517 vif
->driver_flags
|= IEEE80211_VIF_BEACON_FILTER
|
518 IEEE80211_VIF_SUPPORTS_CQM_RSSI
;
520 wl1251_debug(DEBUG_MAC80211
, "mac80211 add interface type %d mac %pM",
521 vif
->type
, vif
->addr
);
523 mutex_lock(&wl
->mutex
);
532 case NL80211_IFTYPE_STATION
:
533 wl
->bss_type
= BSS_TYPE_STA_BSS
;
535 case NL80211_IFTYPE_ADHOC
:
536 wl
->bss_type
= BSS_TYPE_IBSS
;
543 if (memcmp(wl
->mac_addr
, vif
->addr
, ETH_ALEN
)) {
544 memcpy(wl
->mac_addr
, vif
->addr
, ETH_ALEN
);
545 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
546 ret
= wl1251_acx_station_id(wl
);
552 mutex_unlock(&wl
->mutex
);
556 static void wl1251_op_remove_interface(struct ieee80211_hw
*hw
,
557 struct ieee80211_vif
*vif
)
559 struct wl1251
*wl
= hw
->priv
;
561 mutex_lock(&wl
->mutex
);
562 wl1251_debug(DEBUG_MAC80211
, "mac80211 remove interface");
564 mutex_unlock(&wl
->mutex
);
567 static int wl1251_build_qos_null_data(struct wl1251
*wl
)
569 struct ieee80211_qos_hdr
template;
571 memset(&template, 0, sizeof(template));
573 memcpy(template.addr1
, wl
->bssid
, ETH_ALEN
);
574 memcpy(template.addr2
, wl
->mac_addr
, ETH_ALEN
);
575 memcpy(template.addr3
, wl
->bssid
, ETH_ALEN
);
577 template.frame_control
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
578 IEEE80211_STYPE_QOS_NULLFUNC
|
579 IEEE80211_FCTL_TODS
);
581 /* FIXME: not sure what priority to use here */
582 template.qos_ctrl
= cpu_to_le16(0);
584 return wl1251_cmd_template_set(wl
, CMD_QOS_NULL_DATA
, &template,
588 static int wl1251_op_config(struct ieee80211_hw
*hw
, u32 changed
)
590 struct wl1251
*wl
= hw
->priv
;
591 struct ieee80211_conf
*conf
= &hw
->conf
;
592 int channel
, ret
= 0;
594 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
596 wl1251_debug(DEBUG_MAC80211
, "mac80211 config ch %d psm %s power %d",
598 conf
->flags
& IEEE80211_CONF_PS
? "on" : "off",
601 mutex_lock(&wl
->mutex
);
603 ret
= wl1251_ps_elp_wakeup(wl
);
607 if (channel
!= wl
->channel
) {
608 wl
->channel
= channel
;
610 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
611 wl
->beacon_int
, wl
->dtim_period
);
616 if (conf
->flags
& IEEE80211_CONF_PS
&& !wl
->psm_requested
) {
617 wl1251_debug(DEBUG_PSM
, "psm enabled");
619 wl
->psm_requested
= true;
621 wl
->dtim_period
= conf
->ps_dtim_period
;
623 ret
= wl1251_acx_wr_tbtt_and_dtim(wl
, wl
->beacon_int
,
627 * mac80211 enables PSM only if we're already associated.
629 ret
= wl1251_ps_set_mode(wl
, STATION_POWER_SAVE_MODE
);
632 } else if (!(conf
->flags
& IEEE80211_CONF_PS
) &&
634 wl1251_debug(DEBUG_PSM
, "psm disabled");
636 wl
->psm_requested
= false;
638 if (wl
->station_mode
!= STATION_ACTIVE_MODE
) {
639 ret
= wl1251_ps_set_mode(wl
, STATION_ACTIVE_MODE
);
645 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
646 if (conf
->flags
& IEEE80211_CONF_IDLE
) {
647 ret
= wl1251_ps_set_mode(wl
, STATION_IDLE
);
651 ret
= wl1251_ps_set_mode(wl
, STATION_ACTIVE_MODE
);
654 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
655 wl
->beacon_int
, wl
->dtim_period
);
661 if (conf
->power_level
!= wl
->power_level
) {
662 ret
= wl1251_acx_tx_power(wl
, conf
->power_level
);
666 wl
->power_level
= conf
->power_level
;
670 wl1251_ps_elp_sleep(wl
);
673 mutex_unlock(&wl
->mutex
);
678 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
681 FIF_BCN_PRBRESP_PROMISC | \
685 static void wl1251_op_configure_filter(struct ieee80211_hw
*hw
,
686 unsigned int changed
,
687 unsigned int *total
,u64 multicast
)
689 struct wl1251
*wl
= hw
->priv
;
691 wl1251_debug(DEBUG_MAC80211
, "mac80211 configure filter");
693 *total
&= WL1251_SUPPORTED_FILTERS
;
694 changed
&= WL1251_SUPPORTED_FILTERS
;
697 /* no filters which we support changed */
700 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
702 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
703 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
705 if (*total
& FIF_PROMISC_IN_BSS
) {
706 wl
->rx_config
|= CFG_BSSID_FILTER_EN
;
707 wl
->rx_config
|= CFG_RX_ALL_GOOD
;
709 if (*total
& FIF_ALLMULTI
)
711 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
712 * all multicast frames
714 wl
->rx_config
&= ~CFG_MC_FILTER_EN
;
715 if (*total
& FIF_FCSFAIL
)
716 wl
->rx_filter
|= CFG_RX_FCS_ERROR
;
717 if (*total
& FIF_BCN_PRBRESP_PROMISC
) {
718 wl
->rx_config
&= ~CFG_BSSID_FILTER_EN
;
719 wl
->rx_config
&= ~CFG_SSID_FILTER_EN
;
721 if (*total
& FIF_CONTROL
)
722 wl
->rx_filter
|= CFG_RX_CTL_EN
;
723 if (*total
& FIF_OTHER_BSS
)
724 wl
->rx_filter
&= ~CFG_BSSID_FILTER_EN
;
727 * FIXME: workqueues need to be properly cancelled on stop(), for
728 * now let's just disable changing the filter settings. They will
729 * be updated any on config().
731 /* schedule_work(&wl->filter_work); */
735 static int wl1251_set_key_type(struct wl1251
*wl
,
736 struct wl1251_cmd_set_keys
*key
,
737 enum set_key_cmd cmd
,
738 struct ieee80211_key_conf
*mac80211_key
,
741 switch (mac80211_key
->cipher
) {
742 case WLAN_CIPHER_SUITE_WEP40
:
743 case WLAN_CIPHER_SUITE_WEP104
:
744 if (is_broadcast_ether_addr(addr
))
745 key
->key_type
= KEY_WEP_DEFAULT
;
747 key
->key_type
= KEY_WEP_ADDR
;
749 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
751 case WLAN_CIPHER_SUITE_TKIP
:
752 if (is_broadcast_ether_addr(addr
))
753 key
->key_type
= KEY_TKIP_MIC_GROUP
;
755 key
->key_type
= KEY_TKIP_MIC_PAIRWISE
;
757 mac80211_key
->hw_key_idx
= mac80211_key
->keyidx
;
759 case WLAN_CIPHER_SUITE_CCMP
:
760 if (is_broadcast_ether_addr(addr
))
761 key
->key_type
= KEY_AES_GROUP
;
763 key
->key_type
= KEY_AES_PAIRWISE
;
764 mac80211_key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
767 wl1251_error("Unknown key cipher 0x%x", mac80211_key
->cipher
);
774 static int wl1251_op_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
775 struct ieee80211_vif
*vif
,
776 struct ieee80211_sta
*sta
,
777 struct ieee80211_key_conf
*key
)
779 struct wl1251
*wl
= hw
->priv
;
780 struct wl1251_cmd_set_keys
*wl_cmd
;
784 static const u8 bcast_addr
[ETH_ALEN
] =
785 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
787 wl1251_debug(DEBUG_MAC80211
, "mac80211 set key");
789 wl_cmd
= kzalloc(sizeof(*wl_cmd
), GFP_KERNEL
);
795 addr
= sta
? sta
->addr
: bcast_addr
;
797 wl1251_debug(DEBUG_CRYPT
, "CMD: 0x%x", cmd
);
798 wl1251_dump(DEBUG_CRYPT
, "ADDR: ", addr
, ETH_ALEN
);
799 wl1251_debug(DEBUG_CRYPT
, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
800 key
->cipher
, key
->keyidx
, key
->keylen
, key
->flags
);
801 wl1251_dump(DEBUG_CRYPT
, "KEY: ", key
->key
, key
->keylen
);
803 if (is_zero_ether_addr(addr
)) {
804 /* We dont support TX only encryption */
809 mutex_lock(&wl
->mutex
);
811 ret
= wl1251_ps_elp_wakeup(wl
);
817 wl_cmd
->key_action
= KEY_ADD_OR_REPLACE
;
820 wl_cmd
->key_action
= KEY_REMOVE
;
823 wl1251_error("Unsupported key cmd 0x%x", cmd
);
827 ret
= wl1251_set_key_type(wl
, wl_cmd
, cmd
, key
, addr
);
829 wl1251_error("Set KEY type failed");
833 if (wl_cmd
->key_type
!= KEY_WEP_DEFAULT
)
834 memcpy(wl_cmd
->addr
, addr
, ETH_ALEN
);
836 if ((wl_cmd
->key_type
== KEY_TKIP_MIC_GROUP
) ||
837 (wl_cmd
->key_type
== KEY_TKIP_MIC_PAIRWISE
)) {
839 * We get the key in the following form:
840 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
841 * but the target is expecting:
842 * TKIP - RX MIC - TX MIC
844 memcpy(wl_cmd
->key
, key
->key
, 16);
845 memcpy(wl_cmd
->key
+ 16, key
->key
+ 24, 8);
846 memcpy(wl_cmd
->key
+ 24, key
->key
+ 16, 8);
849 memcpy(wl_cmd
->key
, key
->key
, key
->keylen
);
851 wl_cmd
->key_size
= key
->keylen
;
853 wl_cmd
->id
= key
->keyidx
;
854 wl_cmd
->ssid_profile
= 0;
856 wl1251_dump(DEBUG_CRYPT
, "TARGET KEY: ", wl_cmd
, sizeof(*wl_cmd
));
858 ret
= wl1251_cmd_send(wl
, CMD_SET_KEYS
, wl_cmd
, sizeof(*wl_cmd
));
860 wl1251_warning("could not set keys");
865 wl1251_ps_elp_sleep(wl
);
868 mutex_unlock(&wl
->mutex
);
876 static int wl1251_op_hw_scan(struct ieee80211_hw
*hw
,
877 struct ieee80211_vif
*vif
,
878 struct cfg80211_scan_request
*req
)
880 struct wl1251
*wl
= hw
->priv
;
886 wl1251_debug(DEBUG_MAC80211
, "mac80211 hw scan");
889 ssid
= req
->ssids
[0].ssid
;
890 ssid_len
= req
->ssids
[0].ssid_len
;
893 mutex_lock(&wl
->mutex
);
896 wl1251_debug(DEBUG_SCAN
, "scan already in progress");
901 ret
= wl1251_ps_elp_wakeup(wl
);
905 skb
= ieee80211_probereq_get(wl
->hw
, wl
->vif
, ssid
, ssid_len
,
906 req
->ie
, req
->ie_len
);
912 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_REQ
, skb
->data
,
918 ret
= wl1251_cmd_trigger_scan_to(wl
, 0);
924 ret
= wl1251_cmd_scan(wl
, ssid
, ssid_len
, req
->channels
,
925 req
->n_channels
, WL1251_SCAN_NUM_PROBES
);
927 wl
->scanning
= false;
932 wl1251_ps_elp_sleep(wl
);
935 mutex_unlock(&wl
->mutex
);
940 static int wl1251_op_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
942 struct wl1251
*wl
= hw
->priv
;
945 mutex_lock(&wl
->mutex
);
947 ret
= wl1251_ps_elp_wakeup(wl
);
951 ret
= wl1251_acx_rts_threshold(wl
, (u16
) value
);
953 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret
);
955 wl1251_ps_elp_sleep(wl
);
958 mutex_unlock(&wl
->mutex
);
963 static void wl1251_op_bss_info_changed(struct ieee80211_hw
*hw
,
964 struct ieee80211_vif
*vif
,
965 struct ieee80211_bss_conf
*bss_conf
,
968 struct wl1251
*wl
= hw
->priv
;
969 struct sk_buff
*beacon
, *skb
;
972 wl1251_debug(DEBUG_MAC80211
, "mac80211 bss info changed");
974 mutex_lock(&wl
->mutex
);
976 ret
= wl1251_ps_elp_wakeup(wl
);
980 if (changed
& BSS_CHANGED_CQM
) {
981 ret
= wl1251_acx_low_rssi(wl
, bss_conf
->cqm_rssi_thold
,
982 WL1251_DEFAULT_LOW_RSSI_WEIGHT
,
983 WL1251_DEFAULT_LOW_RSSI_DEPTH
,
984 WL1251_ACX_LOW_RSSI_TYPE_EDGE
);
987 wl
->rssi_thold
= bss_conf
->cqm_rssi_thold
;
990 if (changed
& BSS_CHANGED_BSSID
) {
991 memcpy(wl
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
993 skb
= ieee80211_nullfunc_get(wl
->hw
, wl
->vif
);
997 ret
= wl1251_cmd_template_set(wl
, CMD_NULL_DATA
,
998 skb
->data
, skb
->len
);
1003 ret
= wl1251_build_qos_null_data(wl
);
1007 if (wl
->bss_type
!= BSS_TYPE_IBSS
) {
1008 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->channel
,
1009 wl
->beacon_int
, wl
->dtim_period
);
1015 if (changed
& BSS_CHANGED_ASSOC
) {
1016 if (bss_conf
->assoc
) {
1017 wl
->beacon_int
= bss_conf
->beacon_int
;
1019 skb
= ieee80211_pspoll_get(wl
->hw
, wl
->vif
);
1023 ret
= wl1251_cmd_template_set(wl
, CMD_PS_POLL
,
1030 ret
= wl1251_acx_aid(wl
, bss_conf
->aid
);
1034 /* use defaults when not associated */
1035 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1036 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1039 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1040 if (bss_conf
->use_short_slot
)
1041 ret
= wl1251_acx_slot(wl
, SLOT_TIME_SHORT
);
1043 ret
= wl1251_acx_slot(wl
, SLOT_TIME_LONG
);
1045 wl1251_warning("Set slot time failed %d", ret
);
1050 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
1051 if (bss_conf
->use_short_preamble
)
1052 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_SHORT
);
1054 wl1251_acx_set_preamble(wl
, ACX_PREAMBLE_LONG
);
1057 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
1058 if (bss_conf
->use_cts_prot
)
1059 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_ENABLE
);
1061 ret
= wl1251_acx_cts_protect(wl
, CTSPROTECT_DISABLE
);
1063 wl1251_warning("Set ctsprotect failed %d", ret
);
1068 if (changed
& BSS_CHANGED_BEACON
) {
1069 beacon
= ieee80211_beacon_get(hw
, vif
);
1073 ret
= wl1251_cmd_template_set(wl
, CMD_BEACON
, beacon
->data
,
1077 dev_kfree_skb(beacon
);
1081 ret
= wl1251_cmd_template_set(wl
, CMD_PROBE_RESP
, beacon
->data
,
1084 dev_kfree_skb(beacon
);
1089 ret
= wl1251_join(wl
, wl
->bss_type
, wl
->beacon_int
,
1090 wl
->channel
, wl
->dtim_period
);
1097 wl1251_ps_elp_sleep(wl
);
1100 mutex_unlock(&wl
->mutex
);
1104 /* can't be const, mac80211 writes to this */
1105 static struct ieee80211_rate wl1251_rates
[] = {
1108 .hw_value_short
= 0x1, },
1111 .hw_value_short
= 0x2,
1112 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1115 .hw_value_short
= 0x4,
1116 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1119 .hw_value_short
= 0x20,
1120 .flags
= IEEE80211_RATE_SHORT_PREAMBLE
},
1123 .hw_value_short
= 0x8, },
1126 .hw_value_short
= 0x10, },
1129 .hw_value_short
= 0x40, },
1132 .hw_value_short
= 0x80, },
1135 .hw_value_short
= 0x200, },
1138 .hw_value_short
= 0x400, },
1141 .hw_value_short
= 0x800, },
1144 .hw_value_short
= 0x1000, },
1147 /* can't be const, mac80211 writes to this */
1148 static struct ieee80211_channel wl1251_channels
[] = {
1149 { .hw_value
= 1, .center_freq
= 2412},
1150 { .hw_value
= 2, .center_freq
= 2417},
1151 { .hw_value
= 3, .center_freq
= 2422},
1152 { .hw_value
= 4, .center_freq
= 2427},
1153 { .hw_value
= 5, .center_freq
= 2432},
1154 { .hw_value
= 6, .center_freq
= 2437},
1155 { .hw_value
= 7, .center_freq
= 2442},
1156 { .hw_value
= 8, .center_freq
= 2447},
1157 { .hw_value
= 9, .center_freq
= 2452},
1158 { .hw_value
= 10, .center_freq
= 2457},
1159 { .hw_value
= 11, .center_freq
= 2462},
1160 { .hw_value
= 12, .center_freq
= 2467},
1161 { .hw_value
= 13, .center_freq
= 2472},
1164 static int wl1251_op_conf_tx(struct ieee80211_hw
*hw
,
1165 struct ieee80211_vif
*vif
, u16 queue
,
1166 const struct ieee80211_tx_queue_params
*params
)
1168 enum wl1251_acx_ps_scheme ps_scheme
;
1169 struct wl1251
*wl
= hw
->priv
;
1172 mutex_lock(&wl
->mutex
);
1174 wl1251_debug(DEBUG_MAC80211
, "mac80211 conf tx %d", queue
);
1176 ret
= wl1251_ps_elp_wakeup(wl
);
1180 /* mac80211 uses units of 32 usec */
1181 ret
= wl1251_acx_ac_cfg(wl
, wl1251_tx_get_queue(queue
),
1182 params
->cw_min
, params
->cw_max
,
1183 params
->aifs
, params
->txop
* 32);
1188 ps_scheme
= WL1251_ACX_PS_SCHEME_UPSD_TRIGGER
;
1190 ps_scheme
= WL1251_ACX_PS_SCHEME_LEGACY
;
1192 ret
= wl1251_acx_tid_cfg(wl
, wl1251_tx_get_queue(queue
),
1194 wl1251_tx_get_queue(queue
), ps_scheme
,
1195 WL1251_ACX_ACK_POLICY_LEGACY
);
1200 wl1251_ps_elp_sleep(wl
);
1203 mutex_unlock(&wl
->mutex
);
1208 static int wl1251_op_get_survey(struct ieee80211_hw
*hw
, int idx
,
1209 struct survey_info
*survey
)
1211 struct wl1251
*wl
= hw
->priv
;
1212 struct ieee80211_conf
*conf
= &hw
->conf
;
1217 survey
->channel
= conf
->channel
;
1218 survey
->filled
= SURVEY_INFO_NOISE_DBM
;
1219 survey
->noise
= wl
->noise
;
1224 /* can't be const, mac80211 writes to this */
1225 static struct ieee80211_supported_band wl1251_band_2ghz
= {
1226 .channels
= wl1251_channels
,
1227 .n_channels
= ARRAY_SIZE(wl1251_channels
),
1228 .bitrates
= wl1251_rates
,
1229 .n_bitrates
= ARRAY_SIZE(wl1251_rates
),
1232 static const struct ieee80211_ops wl1251_ops
= {
1233 .start
= wl1251_op_start
,
1234 .stop
= wl1251_op_stop
,
1235 .add_interface
= wl1251_op_add_interface
,
1236 .remove_interface
= wl1251_op_remove_interface
,
1237 .config
= wl1251_op_config
,
1238 .configure_filter
= wl1251_op_configure_filter
,
1240 .set_key
= wl1251_op_set_key
,
1241 .hw_scan
= wl1251_op_hw_scan
,
1242 .bss_info_changed
= wl1251_op_bss_info_changed
,
1243 .set_rts_threshold
= wl1251_op_set_rts_threshold
,
1244 .conf_tx
= wl1251_op_conf_tx
,
1245 .get_survey
= wl1251_op_get_survey
,
1248 static int wl1251_read_eeprom_byte(struct wl1251
*wl
, off_t offset
, u8
*data
)
1250 unsigned long timeout
;
1252 wl1251_reg_write32(wl
, EE_ADDR
, offset
);
1253 wl1251_reg_write32(wl
, EE_CTL
, EE_CTL_READ
);
1255 /* EE_CTL_READ clears when data is ready */
1256 timeout
= jiffies
+ msecs_to_jiffies(100);
1258 if (!(wl1251_reg_read32(wl
, EE_CTL
) & EE_CTL_READ
))
1261 if (time_after(jiffies
, timeout
))
1267 *data
= wl1251_reg_read32(wl
, EE_DATA
);
1271 static int wl1251_read_eeprom(struct wl1251
*wl
, off_t offset
,
1272 u8
*data
, size_t len
)
1277 wl1251_reg_write32(wl
, EE_START
, 0);
1279 for (i
= 0; i
< len
; i
++) {
1280 ret
= wl1251_read_eeprom_byte(wl
, offset
+ i
, &data
[i
]);
1288 static int wl1251_read_eeprom_mac(struct wl1251
*wl
)
1293 wl1251_set_partition(wl
, 0, 0, REGISTERS_BASE
, REGISTERS_DOWN_SIZE
);
1295 ret
= wl1251_read_eeprom(wl
, 0x1c, mac
, sizeof(mac
));
1297 wl1251_warning("failed to read MAC address from EEPROM");
1301 /* MAC is stored in reverse order */
1302 for (i
= 0; i
< ETH_ALEN
; i
++)
1303 wl
->mac_addr
[i
] = mac
[ETH_ALEN
- i
- 1];
1308 static int wl1251_register_hw(struct wl1251
*wl
)
1312 if (wl
->mac80211_registered
)
1315 SET_IEEE80211_PERM_ADDR(wl
->hw
, wl
->mac_addr
);
1317 ret
= ieee80211_register_hw(wl
->hw
);
1319 wl1251_error("unable to register mac80211 hw: %d", ret
);
1323 wl
->mac80211_registered
= true;
1325 wl1251_notice("loaded");
1330 int wl1251_init_ieee80211(struct wl1251
*wl
)
1334 /* The tx descriptor buffer and the TKIP space */
1335 wl
->hw
->extra_tx_headroom
= sizeof(struct tx_double_buffer_desc
)
1336 + WL1251_TKIP_IV_SPACE
;
1339 /* FIXME: find a proper value */
1340 wl
->hw
->channel_change_time
= 10000;
1342 wl
->hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
1343 IEEE80211_HW_SUPPORTS_PS
|
1344 IEEE80211_HW_SUPPORTS_UAPSD
;
1346 wl
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
) |
1347 BIT(NL80211_IFTYPE_ADHOC
);
1348 wl
->hw
->wiphy
->max_scan_ssids
= 1;
1349 wl
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &wl1251_band_2ghz
;
1354 wl1251_read_eeprom_mac(wl
);
1356 ret
= wl1251_register_hw(wl
);
1360 wl1251_debugfs_init(wl
);
1361 wl1251_notice("initialized");
1368 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211
);
1370 struct ieee80211_hw
*wl1251_alloc_hw(void)
1372 struct ieee80211_hw
*hw
;
1375 static const u8 nokia_oui
[3] = {0x00, 0x1f, 0xdf};
1377 hw
= ieee80211_alloc_hw(sizeof(*wl
), &wl1251_ops
);
1379 wl1251_error("could not alloc ieee80211_hw");
1380 return ERR_PTR(-ENOMEM
);
1384 memset(wl
, 0, sizeof(*wl
));
1388 wl
->data_in_count
= 0;
1390 skb_queue_head_init(&wl
->tx_queue
);
1392 INIT_WORK(&wl
->filter_work
, wl1251_filter_work
);
1393 INIT_DELAYED_WORK(&wl
->elp_work
, wl1251_elp_work
);
1394 wl
->channel
= WL1251_DEFAULT_CHANNEL
;
1395 wl
->scanning
= false;
1396 wl
->default_key
= 0;
1400 wl
->rx_current_buffer
= 0;
1402 wl
->rx_config
= WL1251_DEFAULT_RX_CONFIG
;
1403 wl
->rx_filter
= WL1251_DEFAULT_RX_FILTER
;
1405 wl
->station_mode
= STATION_ACTIVE_MODE
;
1406 wl
->psm_requested
= false;
1407 wl
->tx_queue_stopped
= false;
1408 wl
->power_level
= WL1251_DEFAULT_POWER_LEVEL
;
1410 wl
->beacon_int
= WL1251_DEFAULT_BEACON_INT
;
1411 wl
->dtim_period
= WL1251_DEFAULT_DTIM_PERIOD
;
1414 for (i
= 0; i
< FW_TX_CMPLT_BLOCK_SIZE
; i
++)
1415 wl
->tx_frames
[i
] = NULL
;
1417 wl
->next_tx_complete
= 0;
1419 INIT_WORK(&wl
->irq_work
, wl1251_irq_work
);
1420 INIT_WORK(&wl
->tx_work
, wl1251_tx_work
);
1423 * In case our MAC address is not correctly set,
1424 * we use a random but Nokia MAC.
1426 memcpy(wl
->mac_addr
, nokia_oui
, 3);
1427 get_random_bytes(wl
->mac_addr
+ 3, 3);
1429 wl
->state
= WL1251_STATE_OFF
;
1430 mutex_init(&wl
->mutex
);
1432 wl
->tx_mgmt_frm_rate
= DEFAULT_HW_GEN_TX_RATE
;
1433 wl
->tx_mgmt_frm_mod
= DEFAULT_HW_GEN_MODULATION_TYPE
;
1435 wl
->rx_descriptor
= kmalloc(sizeof(*wl
->rx_descriptor
), GFP_KERNEL
);
1436 if (!wl
->rx_descriptor
) {
1437 wl1251_error("could not allocate memory for rx descriptor");
1438 ieee80211_free_hw(hw
);
1439 return ERR_PTR(-ENOMEM
);
1444 EXPORT_SYMBOL_GPL(wl1251_alloc_hw
);
1446 int wl1251_free_hw(struct wl1251
*wl
)
1448 ieee80211_unregister_hw(wl
->hw
);
1450 wl1251_debugfs_exit(wl
);
1452 kfree(wl
->target_mem_map
);
1453 kfree(wl
->data_path
);
1459 kfree(wl
->rx_descriptor
);
1460 wl
->rx_descriptor
= NULL
;
1462 ieee80211_free_hw(wl
->hw
);
1466 EXPORT_SYMBOL_GPL(wl1251_free_hw
);
1468 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1469 MODULE_LICENSE("GPL");
1470 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1471 MODULE_FIRMWARE(WL1251_FW_NAME
);