// SPDX-License-Identifier: GPL-2.0-only
/*
* This file is part of wlcore
*
* Copyright ( C ) 2008 - 2010 Nokia Corporation
* Copyright ( C ) 2011 - 2013 Texas Instruments Inc .
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/pm_runtime.h>
#include <linux/pm_wakeirq.h>
#include "wlcore.h"
#include "debug.h"
#include "wl12xx_80211.h"
#include "io.h"
#include "tx.h"
#include "ps.h"
#include "init.h"
#include "debugfs.h"
#include "testmode.h"
#include "vendor_cmd.h"
#include "scan.h"
#include "hw_ops.h"
#include "sysfs.h"
#define WL1271_BOOT_RETRIES 3
#define WL1271_WAKEUP_TIMEOUT 500
static char *fwlog_param;
static int fwlog_mem_blocks = -1 ;
static int bug_on_recovery = -1 ;
static int no_recovery = -1 ;
static void __wl1271_op_remove_interface(struct wl1271 *wl,
struct ieee80211_vif *vif,
bool reset_tx_queues);
static void wlcore_op_stop_locked(struct wl1271 *wl);
static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif);
static int wl12xx_set_authorized(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret;
if (WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS))
return -EINVAL;
if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
return 0 ;
if (test_and_set_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags))
return 0 ;
ret = wl12xx_cmd_set_peer_state(wl, wlvif, wlvif->sta.hlid);
if (ret < 0 )
return ret;
wl1271_info("Association completed." );
return 0 ;
}
static void wl1271_reg_notify(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct wl1271 *wl = hw->priv;
/* copy the current dfs region */
if (request)
wl->dfs_region = request->dfs_region;
wlcore_regdomain_config(wl);
}
static int wl1271_set_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif,
bool enable)
{
int ret = 0 ;
/* we should hold wl->mutex */
ret = wl1271_acx_ps_rx_streaming(wl, wlvif, enable);
if (ret < 0 )
goto out;
if (enable)
set_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
else
clear_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
out:
return ret;
}
/*
* this function is being called when the rx_streaming interval
* has beed changed or rx_streaming should be disabled
*/
int wl1271_recalc_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret = 0 ;
int period = wl->conf.rx_streaming.interval;
/* don't reconfigure if rx_streaming is disabled */
if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
goto out;
/* reconfigure/disable according to new streaming_period */
if (period &&
test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
(wl->conf.rx_streaming.always ||
test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
ret = wl1271_set_rx_streaming(wl, wlvif, true );
else {
ret = wl1271_set_rx_streaming(wl, wlvif, false );
/* don't cancel_work_sync since we might deadlock */
timer_delete_sync(&wlvif->rx_streaming_timer);
}
out:
return ret;
}
static void wl1271_rx_streaming_enable_work(struct work_struct *work)
{
int ret;
struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
rx_streaming_enable_work);
struct wl1271 *wl = wlvif->wl;
mutex_lock(&wl->mutex);
if (test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags) ||
!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
(!wl->conf.rx_streaming.always &&
!test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
goto out;
if (!wl->conf.rx_streaming.interval)
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl1271_set_rx_streaming(wl, wlvif, true );
if (ret < 0 )
goto out_sleep;
/* stop it after some time of inactivity */
mod_timer(&wlvif->rx_streaming_timer,
jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static void wl1271_rx_streaming_disable_work(struct work_struct *work)
{
int ret;
struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
rx_streaming_disable_work);
struct wl1271 *wl = wlvif->wl;
mutex_lock(&wl->mutex);
if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl1271_set_rx_streaming(wl, wlvif, false );
if (ret)
goto out_sleep;
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static void wl1271_rx_streaming_timer(struct timer_list *t)
{
struct wl12xx_vif *wlvif = timer_container_of(wlvif, t,
rx_streaming_timer);
struct wl1271 *wl = wlvif->wl;
ieee80211_queue_work(wl->hw, &wlvif->rx_streaming_disable_work);
}
/* wl->mutex must be taken */
void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl)
{
/* if the watchdog is not armed, don't do anything */
if (wl->tx_allocated_blocks == 0 )
return ;
cancel_delayed_work(&wl->tx_watchdog_work);
ieee80211_queue_delayed_work(wl->hw, &wl->tx_watchdog_work,
msecs_to_jiffies(wl->conf.tx.tx_watchdog_timeout));
}
static void wlcore_rc_update_work(struct work_struct *work)
{
int ret;
struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
rc_update_work);
struct wl1271 *wl = wlvif->wl;
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
if (ieee80211_vif_is_mesh(vif)) {
ret = wl1271_acx_set_ht_capabilities(wl, &wlvif->rc_ht_cap,
true , wlvif->sta.hlid);
if (ret < 0 )
goto out_sleep;
} else {
wlcore_hw_sta_rc_update(wl, wlvif);
}
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static void wl12xx_tx_watchdog_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
dwork = to_delayed_work(work);
wl = container_of(dwork, struct wl1271, tx_watchdog_work);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/* Tx went out in the meantime - everything is ok */
if (unlikely(wl->tx_allocated_blocks == 0 ))
goto out;
/*
* if a ROC is in progress , we might not have any Tx for a long
* time ( e . g . pending Tx on the non - ROC channels )
*/
if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES) {
wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms due to ROC" ,
wl->conf.tx.tx_watchdog_timeout);
wl12xx_rearm_tx_watchdog_locked(wl);
goto out;
}
/*
* if a scan is in progress , we might not have any Tx for a long
* time
*/
if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms due to scan" ,
wl->conf.tx.tx_watchdog_timeout);
wl12xx_rearm_tx_watchdog_locked(wl);
goto out;
}
/*
* AP might cache a frame for a long time for a sleeping station ,
* so rearm the timer if there ' s an AP interface with stations . If
* Tx is genuinely stuck we will most hopefully discover it when all
* stations are removed due to inactivity .
*/
if (wl->active_sta_count) {
wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms. AP has "
" %d stations" ,
wl->conf.tx.tx_watchdog_timeout,
wl->active_sta_count);
wl12xx_rearm_tx_watchdog_locked(wl);
goto out;
}
wl1271_error("Tx stuck (in FW) for %d ms. Starting recovery" ,
wl->conf.tx.tx_watchdog_timeout);
wl12xx_queue_recovery_work(wl);
out:
mutex_unlock(&wl->mutex);
}
static void wlcore_adjust_conf(struct wl1271 *wl)
{
if (fwlog_param) {
if (!strcmp(fwlog_param, "continuous" )) {
wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_HOST;
} else if (!strcmp(fwlog_param, "dbgpins" )) {
wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_DBG_PINS;
} else if (!strcmp(fwlog_param, "disable" )) {
wl->conf.fwlog.mem_blocks = 0 ;
wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_NONE;
} else {
wl1271_error("Unknown fwlog parameter %s" , fwlog_param);
}
}
if (bug_on_recovery != -1 )
wl->conf.recovery.bug_on_recovery = (u8) bug_on_recovery;
if (no_recovery != -1 )
wl->conf.recovery.no_recovery = (u8) no_recovery;
}
static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
u8 hlid, u8 tx_pkts)
{
bool fw_ps;
fw_ps = test_bit(hlid, &wl->ap_fw_ps_map);
/*
* Wake up from high level PS if the STA is asleep with too little
* packets in FW or if the STA is awake .
*/
if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS)
wl12xx_ps_link_end(wl, wlvif, hlid);
/*
* Start high - level PS if the STA is asleep with enough blocks in FW .
* Make an exception if this is the only connected link . In this
* case FW - memory congestion is less of a problem .
* Note that a single connected STA means 2 * ap_count + 1 active links ,
* since we must account for the global and broadcast AP links
* for each AP . The " fw_ps " check assures us the other link is a STA
* connected to the AP . Otherwise the FW would not set the PSM bit .
*/
else if (wl->active_link_count > (wl->ap_count*2 + 1 ) && fw_ps &&
tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
wl12xx_ps_link_start(wl, wlvif, hlid, true );
}
static void wl12xx_irq_update_links_status(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct wl_fw_status *status)
{
unsigned long cur_fw_ps_map;
u8 hlid;
cur_fw_ps_map = status->link_ps_bitmap;
if (wl->ap_fw_ps_map != cur_fw_ps_map) {
wl1271_debug(DEBUG_PSM,
"link ps prev 0x%lx cur 0x%lx changed 0x%lx" ,
wl->ap_fw_ps_map, cur_fw_ps_map,
wl->ap_fw_ps_map ^ cur_fw_ps_map);
wl->ap_fw_ps_map = cur_fw_ps_map;
}
for_each_set_bit(hlid, wlvif->ap.sta_hlid_map, wl->num_links)
wl12xx_irq_ps_regulate_link(wl, wlvif, hlid,
wl->links[hlid].allocated_pkts);
}
static int wlcore_fw_status(struct wl1271 *wl, struct wl_fw_status *status)
{
struct wl12xx_vif *wlvifsta;
struct wl12xx_vif *wlvifap;
struct wl12xx_vif *wlvif;
u32 old_tx_blk_count = wl->tx_blocks_available;
int avail, freed_blocks;
int i;
int ret;
struct wl1271_link *lnk;
ret = wlcore_raw_read_data(wl, REG_RAW_FW_STATUS_ADDR,
wl->raw_fw_status,
wl->fw_status_len, false );
if (ret < 0 )
return ret;
wlcore_hw_convert_fw_status(wl, wl->raw_fw_status, status);
wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
"drv_rx_counter = %d, tx_results_counter = %d)" ,
status->intr,
status->fw_rx_counter,
status->drv_rx_counter,
status->tx_results_counter);
for (i = 0 ; i < NUM_TX_QUEUES; i++) {
/* prevent wrap-around in freed-packets counter */
wl->tx_allocated_pkts[i] -=
(status->counters.tx_released_pkts[i] -
wl->tx_pkts_freed[i]) & 0 xff;
wl->tx_pkts_freed[i] = status->counters.tx_released_pkts[i];
}
/* Find an authorized STA vif */
wlvifsta = NULL;
wl12xx_for_each_wlvif_sta(wl, wlvif) {
if (wlvif->sta.hlid != WL12XX_INVALID_LINK_ID &&
test_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags)) {
wlvifsta = wlvif;
break ;
}
}
/* Find a started AP vif */
wlvifap = NULL;
wl12xx_for_each_wlvif(wl, wlvif) {
if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
wlvif->inconn_count == 0 &&
test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
wlvifap = wlvif;
break ;
}
}
for_each_set_bit(i, wl->links_map, wl->num_links) {
u16 diff16, sec_pn16;
u8 diff, tx_lnk_free_pkts;
lnk = &wl->links[i];
/* prevent wrap-around in freed-packets counter */
tx_lnk_free_pkts = status->counters.tx_lnk_free_pkts[i];
diff = (tx_lnk_free_pkts - lnk->prev_freed_pkts) & 0 xff;
if (diff) {
lnk->allocated_pkts -= diff;
lnk->prev_freed_pkts = tx_lnk_free_pkts;
}
/* Get the current sec_pn16 value if present */
if (status->counters.tx_lnk_sec_pn16)
sec_pn16 = __le16_to_cpu(status->counters.tx_lnk_sec_pn16[i]);
else
sec_pn16 = 0 ;
/* prevent wrap-around in pn16 counter */
diff16 = (sec_pn16 - lnk->prev_sec_pn16) & 0 xffff;
/* FIXME: since free_pkts is a 8-bit counter of packets that
* rolls over , it can become zero . If it is zero , then we
* omit processing below . Is that really correct ?
*/
if (tx_lnk_free_pkts <= 0 )
continue ;
/* For a station that has an authorized link: */
if (wlvifsta && wlvifsta->sta.hlid == i) {
if (wlvifsta->encryption_type == KEY_TKIP ||
wlvifsta->encryption_type == KEY_AES) {
if (diff16) {
lnk->prev_sec_pn16 = sec_pn16;
/* accumulate the prev_freed_pkts
* counter according to the PN from
* firmware
*/
lnk->total_freed_pkts += diff16;
}
} else {
if (diff)
/* accumulate the prev_freed_pkts
* counter according to the free packets
* count from firmware
*/
lnk->total_freed_pkts += diff;
}
}
/* For an AP that has been started */
if (wlvifap && test_bit(i, wlvifap->ap.sta_hlid_map)) {
if (wlvifap->encryption_type == KEY_TKIP ||
wlvifap->encryption_type == KEY_AES) {
if (diff16) {
lnk->prev_sec_pn16 = sec_pn16;
/* accumulate the prev_freed_pkts
* counter according to the PN from
* firmware
*/
lnk->total_freed_pkts += diff16;
}
} else {
if (diff)
/* accumulate the prev_freed_pkts
* counter according to the free packets
* count from firmware
*/
lnk->total_freed_pkts += diff;
}
}
}
/* prevent wrap-around in total blocks counter */
if (likely(wl->tx_blocks_freed <= status->total_released_blks))
freed_blocks = status->total_released_blks -
wl->tx_blocks_freed;
else
freed_blocks = 0 x100000000LL - wl->tx_blocks_freed +
status->total_released_blks;
wl->tx_blocks_freed = status->total_released_blks;
wl->tx_allocated_blocks -= freed_blocks;
/*
* If the FW freed some blocks :
* If we still have allocated blocks - re - arm the timer , Tx is
* not stuck . Otherwise , cancel the timer ( no Tx currently ) .
*/
if (freed_blocks) {
if (wl->tx_allocated_blocks)
wl12xx_rearm_tx_watchdog_locked(wl);
else
cancel_delayed_work(&wl->tx_watchdog_work);
}
avail = status->tx_total - wl->tx_allocated_blocks;
/*
* The FW might change the total number of TX memblocks before
* we get a notification about blocks being released . Thus , the
* available blocks calculation might yield a temporary result
* which is lower than the actual available blocks . Keeping in
* mind that only blocks that were allocated can be moved from
* TX to RX , tx_blocks_available should never decrease here .
*/
wl->tx_blocks_available = max((int )wl->tx_blocks_available,
avail);
/* if more blocks are available now, tx work can be scheduled */
if (wl->tx_blocks_available > old_tx_blk_count)
clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
/* for AP update num of allocated TX blocks per link and ps status */
wl12xx_for_each_wlvif_ap(wl, wlvif) {
wl12xx_irq_update_links_status(wl, wlvif, status);
}
/* update the host-chipset time offset */
wl->time_offset = (ktime_get_boottime_ns() >> 10 ) -
(s64)(status->fw_localtime);
wl->fw_fast_lnk_map = status->link_fast_bitmap;
return 0 ;
}
static void wl1271_flush_deferred_work(struct wl1271 *wl)
{
struct sk_buff *skb;
/* Pass all received frames to the network stack */
while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
ieee80211_rx_ni(wl->hw, skb);
/* Return sent skbs to the network stack */
while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
ieee80211_tx_status_ni(wl->hw, skb);
}
static void wl1271_netstack_work(struct work_struct *work)
{
struct wl1271 *wl =
container_of(work, struct wl1271, netstack_work);
do {
wl1271_flush_deferred_work(wl);
} while (skb_queue_len(&wl->deferred_rx_queue));
}
#define WL1271_IRQ_MAX_LOOPS 256
static int wlcore_irq_locked(struct wl1271 *wl)
{
int ret = 0 ;
u32 intr;
int loopcount = WL1271_IRQ_MAX_LOOPS;
bool run_tx_queue = true ;
bool done = false ;
unsigned int defer_count;
unsigned long flags;
/*
* In case edge triggered interrupt must be used , we cannot iterate
* more than once without introducing race conditions with the hardirq .
*/
if (wl->irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING))
loopcount = 1 ;
wl1271_debug(DEBUG_IRQ, "IRQ work" );
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
while (!done && loopcount--) {
smp_mb__after_atomic();
ret = wlcore_fw_status(wl, wl->fw_status);
if (ret < 0 )
goto err_ret;
wlcore_hw_tx_immediate_compl(wl);
intr = wl->fw_status->intr;
intr &= WLCORE_ALL_INTR_MASK;
if (!intr) {
done = true ;
continue ;
}
if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
wl1271_error("HW watchdog interrupt received! starting recovery." );
wl->watchdog_recovery = true ;
ret = -EIO;
/* restarting the chip. ignore any other interrupt. */
goto err_ret;
}
if (unlikely(intr & WL1271_ACX_SW_INTR_WATCHDOG)) {
wl1271_error("SW watchdog interrupt received! "
"starting recovery." );
wl->watchdog_recovery = true ;
ret = -EIO;
/* restarting the chip. ignore any other interrupt. */
goto err_ret;
}
if (likely(intr & WL1271_ACX_INTR_DATA)) {
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA" );
ret = wlcore_rx(wl, wl->fw_status);
if (ret < 0 )
goto err_ret;
/* Check if any tx blocks were freed */
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags)) {
if (spin_trylock_irqsave(&wl->wl_lock, flags)) {
if (!wl1271_tx_total_queue_count(wl))
run_tx_queue = false ;
spin_unlock_irqrestore(&wl->wl_lock, flags);
}
/*
* In order to avoid starvation of the TX path ,
* call the work function directly .
*/
if (run_tx_queue) {
ret = wlcore_tx_work_locked(wl);
if (ret < 0 )
goto err_ret;
}
}
/* check for tx results */
ret = wlcore_hw_tx_delayed_compl(wl);
if (ret < 0 )
goto err_ret;
/* Make sure the deferred queues don't get too long */
defer_count = skb_queue_len(&wl->deferred_tx_queue) +
skb_queue_len(&wl->deferred_rx_queue);
if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
wl1271_flush_deferred_work(wl);
}
if (intr & WL1271_ACX_INTR_EVENT_A) {
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A" );
ret = wl1271_event_handle(wl, 0 );
if (ret < 0 )
goto err_ret;
}
if (intr & WL1271_ACX_INTR_EVENT_B) {
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B" );
ret = wl1271_event_handle(wl, 1 );
if (ret < 0 )
goto err_ret;
}
if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
wl1271_debug(DEBUG_IRQ,
"WL1271_ACX_INTR_INIT_COMPLETE" );
if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE" );
}
err_ret:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
return ret;
}
static irqreturn_t wlcore_irq(int irq, void *cookie)
{
int ret;
unsigned long flags;
struct wl1271 *wl = cookie;
bool queue_tx_work = true ;
set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
/* complete the ELP completion */
if (test_bit(WL1271_FLAG_IN_ELP, &wl->flags)) {
spin_lock_irqsave(&wl->wl_lock, flags);
if (wl->elp_compl)
complete(wl->elp_compl);
spin_unlock_irqrestore(&wl->wl_lock, flags);
}
if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
/* don't enqueue a work right now. mark it as pending */
set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
wl1271_debug(DEBUG_IRQ, "should not enqueue work" );
spin_lock_irqsave(&wl->wl_lock, flags);
disable_irq_nosync(wl->irq);
pm_wakeup_event(wl->dev, 0 );
spin_unlock_irqrestore(&wl->wl_lock, flags);
goto out_handled;
}
/* TX might be handled here, avoid redundant work */
set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
cancel_work_sync(&wl->tx_work);
mutex_lock(&wl->mutex);
ret = wlcore_irq_locked(wl);
if (ret)
wl12xx_queue_recovery_work(wl);
/* In case TX was not handled in wlcore_irq_locked(), queue TX work */
clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags)) {
if (spin_trylock_irqsave(&wl->wl_lock, flags)) {
if (!wl1271_tx_total_queue_count(wl))
queue_tx_work = false ;
spin_unlock_irqrestore(&wl->wl_lock, flags);
}
if (queue_tx_work)
ieee80211_queue_work(wl->hw, &wl->tx_work);
}
mutex_unlock(&wl->mutex);
out_handled:
clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
return IRQ_HANDLED;
}
struct vif_counter_data {
u8 counter;
struct ieee80211_vif *cur_vif;
bool cur_vif_running;
};
static void wl12xx_vif_count_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct vif_counter_data *counter = data;
counter->counter++;
if (counter->cur_vif == vif)
counter->cur_vif_running = true ;
}
/* caller must not hold wl->mutex, as it might deadlock */
static void wl12xx_get_vif_count(struct ieee80211_hw *hw,
struct ieee80211_vif *cur_vif,
struct vif_counter_data *data)
{
memset(data, 0 , sizeof (*data));
data->cur_vif = cur_vif;
ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL,
wl12xx_vif_count_iter, data);
}
static int wl12xx_fetch_firmware(struct wl1271 *wl, bool plt)
{
const struct firmware *fw;
const char *fw_name;
enum wl12xx_fw_type fw_type;
int ret;
if (plt) {
fw_type = WL12XX_FW_TYPE_PLT;
fw_name = wl->plt_fw_name;
} else {
/*
* we can ' t call wl12xx_get_vif_count ( ) here because
* wl - > mutex is taken , so use the cached last_vif_count value
*/
if (wl->last_vif_count > 1 && wl->mr_fw_name) {
fw_type = WL12XX_FW_TYPE_MULTI;
fw_name = wl->mr_fw_name;
} else {
fw_type = WL12XX_FW_TYPE_NORMAL;
fw_name = wl->sr_fw_name;
}
}
if (wl->fw_type == fw_type)
return 0 ;
wl1271_debug(DEBUG_BOOT, "booting firmware %s" , fw_name);
ret = request_firmware(&fw, fw_name, wl->dev);
if (ret < 0 ) {
wl1271_error("could not get firmware %s: %d" , fw_name, ret);
return ret;
}
if (fw->size % 4 ) {
wl1271_error("firmware size is not multiple of 32 bits: %zu" ,
fw->size);
ret = -EILSEQ;
goto out;
}
vfree(wl->fw);
wl->fw_type = WL12XX_FW_TYPE_NONE;
wl->fw_len = fw->size;
wl->fw = vmalloc(wl->fw_len);
if (!wl->fw) {
wl1271_error("could not allocate memory for the firmware" );
ret = -ENOMEM;
goto out;
}
memcpy(wl->fw, fw->data, wl->fw_len);
ret = 0 ;
wl->fw_type = fw_type;
out:
release_firmware(fw);
return ret;
}
void wl12xx_queue_recovery_work(struct wl1271 *wl)
{
/* Avoid a recursive recovery */
if (wl->state == WLCORE_STATE_ON) {
WARN_ON(!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY,
&wl->flags));
wl->state = WLCORE_STATE_RESTARTING;
set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
ieee80211_queue_work(wl->hw, &wl->recovery_work);
}
}
size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen)
{
size_t len;
/* Make sure we have enough room */
len = min_t(size_t, maxlen, PAGE_SIZE - wl->fwlog_size);
/* Fill the FW log file, consumed by the sysfs fwlog entry */
memcpy(wl->fwlog + wl->fwlog_size, memblock, len);
wl->fwlog_size += len;
return len;
}
static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
{
u32 end_of_log = 0 ;
int error;
if (wl->quirks & WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED)
return ;
wl1271_info("Reading FW panic log" );
/*
* Make sure the chip is awake and the logger isn ' t active .
* Do not send a stop fwlog command if the fw is hanged or if
* dbgpins are used ( due to some fw bug ) .
*/
error = pm_runtime_resume_and_get(wl->dev);
if (error < 0 )
return ;
if (!wl->watchdog_recovery &&
wl->conf.fwlog.output != WL12XX_FWLOG_OUTPUT_DBG_PINS)
wl12xx_cmd_stop_fwlog(wl);
/* Traverse the memory blocks linked list */
do {
end_of_log = wlcore_event_fw_logger(wl);
if (end_of_log == 0 ) {
msleep(100 );
end_of_log = wlcore_event_fw_logger(wl);
}
} while (end_of_log != 0 );
}
static void wlcore_save_freed_pkts(struct wl1271 *wl, struct wl12xx_vif *wlvif,
u8 hlid, struct ieee80211_sta *sta)
{
struct wl1271_station *wl_sta;
u32 sqn_recovery_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
wl_sta = (void *)sta->drv_priv;
wl_sta->total_freed_pkts = wl->links[hlid].total_freed_pkts;
/*
* increment the initial seq number on recovery to account for
* transmitted packets that we haven ' t yet got in the FW status
*/
if (wlvif->encryption_type == KEY_GEM)
sqn_recovery_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
wl_sta->total_freed_pkts += sqn_recovery_padding;
}
static void wlcore_save_freed_pkts_addr(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
u8 hlid, const u8 *addr)
{
struct ieee80211_sta *sta;
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
if (WARN_ON(hlid == WL12XX_INVALID_LINK_ID ||
is_zero_ether_addr(addr)))
return ;
rcu_read_lock();
sta = ieee80211_find_sta(vif, addr);
if (sta)
wlcore_save_freed_pkts(wl, wlvif, hlid, sta);
rcu_read_unlock();
}
static void wlcore_print_recovery(struct wl1271 *wl)
{
u32 pc = 0 ;
u32 hint_sts = 0 ;
int ret;
wl1271_info("Hardware recovery in progress. FW ver: %s" ,
wl->chip.fw_ver_str);
/* change partitions momentarily so we can read the FW pc */
ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
if (ret < 0 )
return ;
ret = wlcore_read_reg(wl, REG_PC_ON_RECOVERY, &pc);
if (ret < 0 )
return ;
ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &hint_sts);
if (ret < 0 )
return ;
wl1271_info("pc: 0x%x, hint_sts: 0x%08x count: %d" ,
pc, hint_sts, ++wl->recovery_count);
wlcore_set_partition(wl, &wl->ptable[PART_WORK]);
}
static void wl1271_recovery_work(struct work_struct *work)
{
struct wl1271 *wl =
container_of(work, struct wl1271, recovery_work);
struct wl12xx_vif *wlvif;
struct ieee80211_vif *vif;
int error;
mutex_lock(&wl->mutex);
if (wl->state == WLCORE_STATE_OFF || wl->plt)
goto out_unlock;
error = pm_runtime_resume_and_get(wl->dev);
if (error < 0 )
wl1271_warning("Enable for recovery failed" );
wlcore_disable_interrupts_nosync(wl);
if (!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags)) {
if (wl->conf.fwlog.output == WL12XX_FWLOG_OUTPUT_HOST)
wl12xx_read_fwlog_panic(wl);
wlcore_print_recovery(wl);
}
BUG_ON(wl->conf.recovery.bug_on_recovery &&
!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags));
clear_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
if (wl->conf.recovery.no_recovery) {
wl1271_info("No recovery (chosen on module load). Fw will remain stuck." );
goto out_unlock;
}
/* Prevent spurious TX during FW restart */
wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
/* reboot the chipset */
while (!list_empty(&wl->wlvif_list)) {
wlvif = list_first_entry(&wl->wlvif_list,
struct wl12xx_vif, list);
vif = wl12xx_wlvif_to_vif(wlvif);
if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
wlcore_save_freed_pkts_addr(wl, wlvif, wlvif->sta.hlid,
vif->bss_conf.bssid);
}
__wl1271_op_remove_interface(wl, vif, false );
}
wlcore_op_stop_locked(wl);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
ieee80211_restart_hw(wl->hw);
/*
* Its safe to enable TX now - the queues are stopped after a request
* to restart the HW .
*/
wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
out_unlock:
wl->watchdog_recovery = false ;
clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
mutex_unlock(&wl->mutex);
}
static int wlcore_fw_wakeup(struct wl1271 *wl)
{
return wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
}
static int wl1271_setup(struct wl1271 *wl)
{
wl->raw_fw_status = kzalloc(wl->fw_status_len, GFP_KERNEL);
if (!wl->raw_fw_status)
goto err;
wl->fw_status = kzalloc(sizeof (*wl->fw_status), GFP_KERNEL);
if (!wl->fw_status)
goto err;
wl->tx_res_if = kzalloc(sizeof (*wl->tx_res_if), GFP_KERNEL);
if (!wl->tx_res_if)
goto err;
return 0 ;
err:
kfree(wl->fw_status);
kfree(wl->raw_fw_status);
return -ENOMEM;
}
static int wl12xx_set_power_on(struct wl1271 *wl)
{
int ret;
msleep(WL1271_PRE_POWER_ON_SLEEP);
ret = wl1271_power_on(wl);
if (ret < 0 )
goto out;
msleep(WL1271_POWER_ON_SLEEP);
wl1271_io_reset(wl);
wl1271_io_init(wl);
ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
if (ret < 0 )
goto fail;
/* ELP module wake up */
ret = wlcore_fw_wakeup(wl);
if (ret < 0 )
goto fail;
out:
return ret;
fail:
wl1271_power_off(wl);
return ret;
}
static int wl12xx_chip_wakeup(struct wl1271 *wl, bool plt)
{
int ret = 0 ;
ret = wl12xx_set_power_on(wl);
if (ret < 0 )
goto out;
/*
* For wl127x based devices we could use the default block
* size ( 512 bytes ) , but due to a bug in the sdio driver , we
* need to set it explicitly after the chip is powered on . To
* simplify the code and since the performance impact is
* negligible , we use the same block size for all different
* chip types .
*
* Check if the bus supports blocksize alignment and , if it
* doesn ' t , make sure we don ' t have the quirk .
*/
if (!wl1271_set_block_size(wl))
wl->quirks &= ~WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN;
/* TODO: make sure the lower driver has set things up correctly */
ret = wl1271_setup(wl);
if (ret < 0 )
goto out;
ret = wl12xx_fetch_firmware(wl, plt);
if (ret < 0 ) {
kfree(wl->fw_status);
kfree(wl->raw_fw_status);
kfree(wl->tx_res_if);
}
out:
return ret;
}
int wl1271_plt_start(struct wl1271 *wl, const enum plt_mode plt_mode)
{
int retries = WL1271_BOOT_RETRIES;
struct wiphy *wiphy = wl->hw->wiphy;
static const char * const PLT_MODE[] = {
"PLT_OFF" ,
"PLT_ON" ,
"PLT_FEM_DETECT" ,
"PLT_CHIP_AWAKE"
};
int ret;
mutex_lock(&wl->mutex);
wl1271_notice("power up" );
if (wl->state != WLCORE_STATE_OFF) {
wl1271_error("cannot go into PLT state because not "
"in off state: %d" , wl->state);
ret = -EBUSY;
goto out;
}
/* Indicate to lower levels that we are now in PLT mode */
wl->plt = true ;
wl->plt_mode = plt_mode;
while (retries) {
retries--;
ret = wl12xx_chip_wakeup(wl, true );
if (ret < 0 )
goto power_off;
if (plt_mode != PLT_CHIP_AWAKE) {
ret = wl->ops->plt_init(wl);
if (ret < 0 )
goto power_off;
}
wl->state = WLCORE_STATE_ON;
wl1271_notice("firmware booted in PLT mode %s (%s)" ,
PLT_MODE[plt_mode],
wl->chip.fw_ver_str);
/* update hw/fw version info in wiphy struct */
wiphy->hw_version = wl->chip.id;
strscpy(wiphy->fw_version, wl->chip.fw_ver_str,
sizeof (wiphy->fw_version));
goto out;
power_off:
wl1271_power_off(wl);
}
wl->plt = false ;
wl->plt_mode = PLT_OFF;
wl1271_error("firmware boot in PLT mode failed despite %d retries" ,
WL1271_BOOT_RETRIES);
out:
mutex_unlock(&wl->mutex);
return ret;
}
int wl1271_plt_stop(struct wl1271 *wl)
{
int ret = 0 ;
wl1271_notice("power down" );
/*
* Interrupts must be disabled before setting the state to OFF .
* Otherwise , the interrupt handler might be called and exit without
* reading the interrupt status .
*/
wlcore_disable_interrupts(wl);
mutex_lock(&wl->mutex);
if (!wl->plt) {
mutex_unlock(&wl->mutex);
/*
* This will not necessarily enable interrupts as interrupts
* may have been disabled when op_stop was called . It will ,
* however , balance the above call to disable_interrupts ( ) .
*/
wlcore_enable_interrupts(wl);
wl1271_error("cannot power down because not in PLT "
"state: %d" , wl->state);
ret = -EBUSY;
goto out;
}
mutex_unlock(&wl->mutex);
wl1271_flush_deferred_work(wl);
cancel_work_sync(&wl->netstack_work);
cancel_work_sync(&wl->recovery_work);
cancel_delayed_work_sync(&wl->tx_watchdog_work);
mutex_lock(&wl->mutex);
wl1271_power_off(wl);
wl->flags = 0 ;
wl->sleep_auth = WL1271_PSM_ILLEGAL;
wl->state = WLCORE_STATE_OFF;
wl->plt = false ;
wl->plt_mode = PLT_OFF;
wl->rx_counter = 0 ;
mutex_unlock(&wl->mutex);
out:
return ret;
}
static void wl1271_op_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct wl1271 *wl = hw->priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
struct wl12xx_vif *wlvif = NULL;
unsigned long flags;
int q, mapping;
u8 hlid;
if (!vif) {
wl1271_debug(DEBUG_TX, "DROP skb with no vif" );
ieee80211_free_txskb(hw, skb);
return ;
}
wlvif = wl12xx_vif_to_data(vif);
mapping = skb_get_queue_mapping(skb);
q = wl1271_tx_get_queue(mapping);
hlid = wl12xx_tx_get_hlid(wl, wlvif, skb, control->sta);
spin_lock_irqsave(&wl->wl_lock, flags);
/*
* drop the packet if the link is invalid or the queue is stopped
* for any reason but watermark . Watermark is a " soft " - stop so we
* allow these packets through .
*/
if (hlid == WL12XX_INVALID_LINK_ID ||
(!test_bit(hlid, wlvif->links_map)) ||
(wlcore_is_queue_stopped_locked(wl, wlvif, q) &&
!wlcore_is_queue_stopped_by_reason_locked(wl, wlvif, q,
WLCORE_QUEUE_STOP_REASON_WATERMARK))) {
wl1271_debug(DEBUG_TX, "DROP skb hlid %d q %d" , hlid, q);
ieee80211_free_txskb(hw, skb);
goto out;
}
wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d len %d" ,
hlid, q, skb->len);
skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
wl->tx_queue_count[q]++;
wlvif->tx_queue_count[q]++;
/*
* The workqueue is slow to process the tx_queue and we need stop
* the queue here , otherwise the queue will get too long .
*/
if (wlvif->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK &&
!wlcore_is_queue_stopped_by_reason_locked(wl, wlvif, q,
WLCORE_QUEUE_STOP_REASON_WATERMARK)) {
wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d" , q);
wlcore_stop_queue_locked(wl, wlvif, q,
WLCORE_QUEUE_STOP_REASON_WATERMARK);
}
/*
* The chip specific setup must run before the first TX packet -
* before that , the tx_work will not be initialized !
*/
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
!test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
ieee80211_queue_work(wl->hw, &wl->tx_work);
out:
spin_unlock_irqrestore(&wl->wl_lock, flags);
}
int wl1271_tx_dummy_packet(struct wl1271 *wl)
{
unsigned long flags;
int q;
/* no need to queue a new dummy packet if one is already pending */
if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
return 0 ;
q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
spin_lock_irqsave(&wl->wl_lock, flags);
set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
wl->tx_queue_count[q]++;
spin_unlock_irqrestore(&wl->wl_lock, flags);
/* The FW is low on RX memory blocks, so send the dummy packet asap */
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
return wlcore_tx_work_locked(wl);
/*
* If the FW TX is busy , TX work will be scheduled by the threaded
* interrupt handler function
*/
return 0 ;
}
/*
* The size of the dummy packet should be at least 1400 bytes . However , in
* order to minimize the number of bus transactions , aligning it to 512 bytes
* boundaries could be beneficial , performance wise
*/
#define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400 , 512 ))
static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
{
struct sk_buff *skb;
struct ieee80211_hdr_3addr *hdr;
unsigned int dummy_packet_size;
dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
sizeof (struct wl1271_tx_hw_descr) - sizeof (*hdr);
skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
if (!skb) {
wl1271_warning("Failed to allocate a dummy packet skb" );
return NULL;
}
skb_reserve(skb, sizeof (struct wl1271_tx_hw_descr));
hdr = skb_put_zero(skb, sizeof (*hdr));
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_TODS);
skb_put_zero(skb, dummy_packet_size);
/* Dummy packets require the TID to be management */
skb->priority = WL1271_TID_MGMT;
/* Initialize all fields that might be used */
skb_set_queue_mapping(skb, 0 );
memset(IEEE80211_SKB_CB(skb), 0 , sizeof (struct ieee80211_tx_info));
return skb;
}
static int
wl1271_validate_wowlan_pattern(struct cfg80211_pkt_pattern *p)
{
int num_fields = 0 , in_field = 0 , fields_size = 0 ;
int i, pattern_len = 0 ;
if (!p->mask) {
wl1271_warning("No mask in WoWLAN pattern" );
return -EINVAL;
}
/*
* The pattern is broken up into segments of bytes at different offsets
* that need to be checked by the FW filter . Each segment is called
* a field in the FW API . We verify that the total number of fields
* required for this pattern won ' t exceed FW limits ( 8 )
* as well as the total fields buffer won ' t exceed the FW limit .
* Note that if there ' s a pattern which crosses Ethernet / IP header
* boundary a new field is required .
*/
for (i = 0 ; i < p->pattern_len; i++) {
if (test_bit(i, (unsigned long *)p->mask)) {
if (!in_field) {
in_field = 1 ;
pattern_len = 1 ;
} else {
if (i == WL1271_RX_FILTER_ETH_HEADER_SIZE) {
num_fields++;
fields_size += pattern_len +
RX_FILTER_FIELD_OVERHEAD;
pattern_len = 1 ;
} else
pattern_len++;
}
} else {
if (in_field) {
in_field = 0 ;
fields_size += pattern_len +
RX_FILTER_FIELD_OVERHEAD;
num_fields++;
}
}
}
if (in_field) {
fields_size += pattern_len + RX_FILTER_FIELD_OVERHEAD;
num_fields++;
}
if (num_fields > WL1271_RX_FILTER_MAX_FIELDS) {
wl1271_warning("RX Filter too complex. Too many segments" );
return -EINVAL;
}
if (fields_size > WL1271_RX_FILTER_MAX_FIELDS_SIZE) {
wl1271_warning("RX filter pattern is too big" );
return -E2BIG;
}
return 0 ;
}
struct wl12xx_rx_filter *wl1271_rx_filter_alloc(void )
{
return kzalloc(sizeof (struct wl12xx_rx_filter), GFP_KERNEL);
}
void wl1271_rx_filter_free(struct wl12xx_rx_filter *filter)
{
int i;
if (filter == NULL)
return ;
for (i = 0 ; i < filter->num_fields; i++)
kfree(filter->fields[i].pattern);
kfree(filter);
}
int wl1271_rx_filter_alloc_field(struct wl12xx_rx_filter *filter,
u16 offset, u8 flags,
const u8 *pattern, u8 len)
{
struct wl12xx_rx_filter_field *field;
if (filter->num_fields == WL1271_RX_FILTER_MAX_FIELDS) {
wl1271_warning("Max fields per RX filter. can't alloc another" );
return -EINVAL;
}
field = &filter->fields[filter->num_fields];
field->pattern = kmemdup(pattern, len, GFP_KERNEL);
if (!field->pattern) {
wl1271_warning("Failed to allocate RX filter pattern" );
return -ENOMEM;
}
filter->num_fields++;
field->offset = cpu_to_le16(offset);
field->flags = flags;
field->len = len;
return 0 ;
}
int wl1271_rx_filter_get_fields_size(struct wl12xx_rx_filter *filter)
{
int i, fields_size = 0 ;
for (i = 0 ; i < filter->num_fields; i++)
fields_size += filter->fields[i].len +
sizeof (struct wl12xx_rx_filter_field) -
sizeof (u8 *);
return fields_size;
}
void wl1271_rx_filter_flatten_fields(struct wl12xx_rx_filter *filter,
u8 *buf)
{
int i;
struct wl12xx_rx_filter_field *field;
for (i = 0 ; i < filter->num_fields; i++) {
field = (struct wl12xx_rx_filter_field *)buf;
field->offset = filter->fields[i].offset;
field->flags = filter->fields[i].flags;
field->len = filter->fields[i].len;
memcpy(&field->pattern, filter->fields[i].pattern, field->len);
buf += sizeof (struct wl12xx_rx_filter_field) -
sizeof (u8 *) + field->len;
}
}
/*
* Allocates an RX filter returned through f
* which needs to be freed using rx_filter_free ( )
*/
static int
wl1271_convert_wowlan_pattern_to_rx_filter(struct cfg80211_pkt_pattern *p,
struct wl12xx_rx_filter **f)
{
int i, j, ret = 0 ;
struct wl12xx_rx_filter *filter;
u16 offset;
u8 flags, len;
filter = wl1271_rx_filter_alloc();
if (!filter) {
wl1271_warning("Failed to alloc rx filter" );
ret = -ENOMEM;
goto err;
}
i = 0 ;
while (i < p->pattern_len) {
if (!test_bit(i, (unsigned long *)p->mask)) {
i++;
continue ;
}
for (j = i; j < p->pattern_len; j++) {
if (!test_bit(j, (unsigned long *)p->mask))
break ;
if (i < WL1271_RX_FILTER_ETH_HEADER_SIZE &&
j >= WL1271_RX_FILTER_ETH_HEADER_SIZE)
break ;
}
if (i < WL1271_RX_FILTER_ETH_HEADER_SIZE) {
offset = i;
flags = WL1271_RX_FILTER_FLAG_ETHERNET_HEADER;
} else {
offset = i - WL1271_RX_FILTER_ETH_HEADER_SIZE;
flags = WL1271_RX_FILTER_FLAG_IP_HEADER;
}
len = j - i;
ret = wl1271_rx_filter_alloc_field(filter,
offset,
flags,
&p->pattern[i], len);
if (ret)
goto err;
i = j;
}
filter->action = FILTER_SIGNAL;
*f = filter;
return 0 ;
err:
wl1271_rx_filter_free(filter);
*f = NULL;
return ret;
}
static int wl1271_configure_wowlan(struct wl1271 *wl,
struct cfg80211_wowlan *wow)
{
int i, ret;
if (!wow || wow->any || !wow->n_patterns) {
ret = wl1271_acx_default_rx_filter_enable(wl, 0 ,
FILTER_SIGNAL);
if (ret)
goto out;
ret = wl1271_rx_filter_clear_all(wl);
if (ret)
goto out;
return 0 ;
}
if (WARN_ON(wow->n_patterns > WL1271_MAX_RX_FILTERS))
return -EINVAL;
/* Validate all incoming patterns before clearing current FW state */
for (i = 0 ; i < wow->n_patterns; i++) {
ret = wl1271_validate_wowlan_pattern(&wow->patterns[i]);
if (ret) {
wl1271_warning("Bad wowlan pattern %d" , i);
return ret;
}
}
ret = wl1271_acx_default_rx_filter_enable(wl, 0 , FILTER_SIGNAL);
if (ret)
goto out;
ret = wl1271_rx_filter_clear_all(wl);
if (ret)
goto out;
/* Translate WoWLAN patterns into filters */
for (i = 0 ; i < wow->n_patterns; i++) {
struct cfg80211_pkt_pattern *p;
struct wl12xx_rx_filter *filter = NULL;
p = &wow->patterns[i];
ret = wl1271_convert_wowlan_pattern_to_rx_filter(p, &filter);
if (ret) {
wl1271_warning("Failed to create an RX filter from "
"wowlan pattern %d" , i);
goto out;
}
ret = wl1271_rx_filter_enable(wl, i, 1 , filter);
wl1271_rx_filter_free(filter);
if (ret)
goto out;
}
ret = wl1271_acx_default_rx_filter_enable(wl, 1 , FILTER_DROP);
out:
return ret;
}
static int wl1271_configure_suspend_sta(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct cfg80211_wowlan *wow)
{
int ret = 0 ;
if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
goto out;
ret = wl1271_configure_wowlan(wl, wow);
if (ret < 0 )
goto out;
if ((wl->conf.conn.suspend_wake_up_event ==
wl->conf.conn.wake_up_event) &&
(wl->conf.conn.suspend_listen_interval ==
wl->conf.conn.listen_interval))
goto out;
ret = wl1271_acx_wake_up_conditions(wl, wlvif,
wl->conf.conn.suspend_wake_up_event,
wl->conf.conn.suspend_listen_interval);
if (ret < 0 )
wl1271_error("suspend: set wake up conditions failed: %d" , ret);
out:
return ret;
}
static int wl1271_configure_suspend_ap(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct cfg80211_wowlan *wow)
{
int ret = 0 ;
if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
goto out;
ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true );
if (ret < 0 )
goto out;
ret = wl1271_configure_wowlan(wl, wow);
if (ret < 0 )
goto out;
out:
return ret;
}
static int wl1271_configure_suspend(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct cfg80211_wowlan *wow)
{
if (wlvif->bss_type == BSS_TYPE_STA_BSS)
return wl1271_configure_suspend_sta(wl, wlvif, wow);
if (wlvif->bss_type == BSS_TYPE_AP_BSS)
return wl1271_configure_suspend_ap(wl, wlvif, wow);
return 0 ;
}
static void wl1271_configure_resume(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret = 0 ;
bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
if ((!is_ap) && (!is_sta))
return ;
if ((is_sta && !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) ||
(is_ap && !test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)))
return ;
wl1271_configure_wowlan(wl, NULL);
if (is_sta) {
if ((wl->conf.conn.suspend_wake_up_event ==
wl->conf.conn.wake_up_event) &&
(wl->conf.conn.suspend_listen_interval ==
wl->conf.conn.listen_interval))
return ;
ret = wl1271_acx_wake_up_conditions(wl, wlvif,
wl->conf.conn.wake_up_event,
wl->conf.conn.listen_interval);
if (ret < 0 )
wl1271_error("resume: wake up conditions failed: %d" ,
ret);
} else if (is_ap) {
ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false );
}
}
static int __maybe_unused wl1271_op_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wow)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
unsigned long flags;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d" , !!wow);
WARN_ON(!wow);
/* we want to perform the recovery before suspending */
if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
wl1271_warning("postponing suspend to perform recovery" );
return -EBUSY;
}
wl1271_tx_flush(wl);
mutex_lock(&wl->mutex);
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 ) {
mutex_unlock(&wl->mutex);
return ret;
}
wl->wow_enabled = true ;
wl12xx_for_each_wlvif(wl, wlvif) {
if (wlcore_is_p2p_mgmt(wlvif))
continue ;
ret = wl1271_configure_suspend(wl, wlvif, wow);
if (ret < 0 ) {
goto out_sleep;
}
}
/* disable fast link flow control notifications from FW */
ret = wlcore_hw_interrupt_notify(wl, false );
if (ret < 0 )
goto out_sleep;
/* if filtering is enabled, configure the FW to drop all RX BA frames */
ret = wlcore_hw_rx_ba_filter(wl,
!!wl->conf.conn.suspend_rx_ba_activity);
if (ret < 0 )
goto out_sleep;
out_sleep:
pm_runtime_put_noidle(wl->dev);
mutex_unlock(&wl->mutex);
if (ret < 0 ) {
wl1271_warning("couldn't prepare device to suspend" );
return ret;
}
/* flush any remaining work */
wl1271_debug(DEBUG_MAC80211, "flushing remaining works" );
flush_work(&wl->tx_work);
/*
* Cancel the watchdog even if above tx_flush failed . We will detect
* it on resume anyway .
*/
cancel_delayed_work(&wl->tx_watchdog_work);
/*
* set suspended flag to avoid triggering a new threaded_irq
* work .
*/
spin_lock_irqsave(&wl->wl_lock, flags);
set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
spin_unlock_irqrestore(&wl->wl_lock, flags);
return pm_runtime_force_suspend(wl->dev);
}
static int __maybe_unused wl1271_op_resume(struct ieee80211_hw *hw)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
unsigned long flags;
bool run_irq_work = false , pending_recovery;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d" ,
wl->wow_enabled);
WARN_ON(!wl->wow_enabled);
ret = pm_runtime_force_resume(wl->dev);
if (ret < 0 ) {
wl1271_error("ELP wakeup failure!" );
goto out_sleep;
}
/*
* re - enable irq_work enqueuing , and call irq_work directly if
* there is a pending work .
*/
spin_lock_irqsave(&wl->wl_lock, flags);
clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
run_irq_work = true ;
spin_unlock_irqrestore(&wl->wl_lock, flags);
mutex_lock(&wl->mutex);
/* test the recovery flag before calling any SDIO functions */
pending_recovery = test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS,
&wl->flags);
if (run_irq_work) {
wl1271_debug(DEBUG_MAC80211,
"run postponed irq_work directly" );
/* don't talk to the HW if recovery is pending */
if (!pending_recovery) {
ret = wlcore_irq_locked(wl);
if (ret)
wl12xx_queue_recovery_work(wl);
}
wlcore_enable_interrupts(wl);
}
if (pending_recovery) {
wl1271_warning("queuing forgotten recovery on resume" );
ieee80211_queue_work(wl->hw, &wl->recovery_work);
goto out_sleep;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl12xx_for_each_wlvif(wl, wlvif) {
if (wlcore_is_p2p_mgmt(wlvif))
continue ;
wl1271_configure_resume(wl, wlvif);
}
ret = wlcore_hw_interrupt_notify(wl, true );
if (ret < 0 )
goto out_sleep;
/* if filtering is enabled, configure the FW to drop all RX BA frames */
ret = wlcore_hw_rx_ba_filter(wl, false );
if (ret < 0 )
goto out_sleep;
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
wl->wow_enabled = false ;
/*
* Set a flag to re - init the watchdog on the first Tx after resume .
* That way we avoid possible conditions where Tx - complete interrupts
* fail to arrive and we perform a spurious recovery .
*/
set_bit(WL1271_FLAG_REINIT_TX_WDOG, &wl->flags);
mutex_unlock(&wl->mutex);
return 0 ;
}
static int wl1271_op_start(struct ieee80211_hw *hw)
{
wl1271_debug(DEBUG_MAC80211, "mac80211 start" );
/*
* We have to delay the booting of the hardware because
* we need to know the local MAC address before downloading and
* initializing the firmware . The MAC address cannot be changed
* after boot , and without the proper MAC address , the firmware
* will not function properly .
*
* The MAC address is first known when the corresponding interface
* is added . That is where we will initialize the hardware .
*/
return 0 ;
}
static void wlcore_op_stop_locked(struct wl1271 *wl)
{
int i;
if (wl->state == WLCORE_STATE_OFF) {
if (test_and_clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS,
&wl->flags))
wlcore_enable_interrupts(wl);
return ;
}
/*
* this must be before the cancel_work calls below , so that the work
* functions don ' t perform further work .
*/
wl->state = WLCORE_STATE_OFF;
/*
* Use the nosync variant to disable interrupts , so the mutex could be
* held while doing so without deadlocking .
*/
wlcore_disable_interrupts_nosync(wl);
mutex_unlock(&wl->mutex);
wlcore_synchronize_interrupts(wl);
if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
cancel_work_sync(&wl->recovery_work);
wl1271_flush_deferred_work(wl);
cancel_delayed_work_sync(&wl->scan_complete_work);
cancel_work_sync(&wl->netstack_work);
cancel_work_sync(&wl->tx_work);
cancel_delayed_work_sync(&wl->tx_watchdog_work);
/* let's notify MAC80211 about the remaining pending TX frames */
mutex_lock(&wl->mutex);
wl12xx_tx_reset(wl);
wl1271_power_off(wl);
/*
* In case a recovery was scheduled , interrupts were disabled to avoid
* an interrupt storm . Now that the power is down , it is safe to
* re - enable interrupts to balance the disable depth
*/
if (test_and_clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
wlcore_enable_interrupts(wl);
wl->band = NL80211_BAND_2GHZ;
wl->rx_counter = 0 ;
wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
wl->channel_type = NL80211_CHAN_NO_HT;
wl->tx_blocks_available = 0 ;
wl->tx_allocated_blocks = 0 ;
wl->tx_results_count = 0 ;
wl->tx_packets_count = 0 ;
wl->time_offset = 0 ;
wl->ap_fw_ps_map = 0 ;
wl->ap_ps_map = 0 ;
wl->sleep_auth = WL1271_PSM_ILLEGAL;
memset(wl->roles_map, 0 , sizeof (wl->roles_map));
memset(wl->links_map, 0 , sizeof (wl->links_map));
memset(wl->roc_map, 0 , sizeof (wl->roc_map));
memset(wl->session_ids, 0 , sizeof (wl->session_ids));
memset(wl->rx_filter_enabled, 0 , sizeof (wl->rx_filter_enabled));
wl->active_sta_count = 0 ;
wl->active_link_count = 0 ;
/* The system link is always allocated */
wl->links[WL12XX_SYSTEM_HLID].allocated_pkts = 0 ;
wl->links[WL12XX_SYSTEM_HLID].prev_freed_pkts = 0 ;
__set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
/*
* this is performed after the cancel_work calls and the associated
* mutex_lock , so that wl1271_op_add_interface does not accidentally
* get executed before all these vars have been reset .
*/
wl->flags = 0 ;
wl->tx_blocks_freed = 0 ;
for (i = 0 ; i < NUM_TX_QUEUES; i++) {
wl->tx_pkts_freed[i] = 0 ;
wl->tx_allocated_pkts[i] = 0 ;
}
wl1271_debugfs_reset(wl);
kfree(wl->raw_fw_status);
wl->raw_fw_status = NULL;
kfree(wl->fw_status);
wl->fw_status = NULL;
kfree(wl->tx_res_if);
wl->tx_res_if = NULL;
kfree(wl->target_mem_map);
wl->target_mem_map = NULL;
/*
* FW channels must be re - calibrated after recovery ,
* save current Reg - Domain channel configuration and clear it .
*/
memcpy(wl->reg_ch_conf_pending, wl->reg_ch_conf_last,
sizeof (wl->reg_ch_conf_pending));
memset(wl->reg_ch_conf_last, 0 , sizeof (wl->reg_ch_conf_last));
}
static void wlcore_op_stop(struct ieee80211_hw *hw, bool suspend)
{
struct wl1271 *wl = hw->priv;
wl1271_debug(DEBUG_MAC80211, "mac80211 stop" );
mutex_lock(&wl->mutex);
wlcore_op_stop_locked(wl);
mutex_unlock(&wl->mutex);
}
static void wlcore_channel_switch_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
int ret;
dwork = to_delayed_work(work);
wlvif = container_of(dwork, struct wl12xx_vif, channel_switch_work);
wl = wlvif->wl;
wl1271_info("channel switch failed (role_id: %d)." , wlvif->role_id);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/* check the channel switch is still ongoing */
if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags))
goto out;
vif = wl12xx_wlvif_to_vif(wlvif);
ieee80211_chswitch_done(vif, false , 0 );
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl12xx_cmd_stop_channel_switch(wl, wlvif);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static void wlcore_connection_loss_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
dwork = to_delayed_work(work);
wlvif = container_of(dwork, struct wl12xx_vif, connection_loss_work);
wl = wlvif->wl;
wl1271_info("Connection loss work (role_id: %d)." , wlvif->role_id);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/* Call mac80211 connection loss */
if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
goto out;
vif = wl12xx_wlvif_to_vif(wlvif);
ieee80211_connection_loss(vif);
out:
mutex_unlock(&wl->mutex);
}
static void wlcore_pending_auth_complete_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct wl12xx_vif *wlvif;
unsigned long time_spare;
int ret;
dwork = to_delayed_work(work);
wlvif = container_of(dwork, struct wl12xx_vif,
pending_auth_complete_work);
wl = wlvif->wl;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/*
* Make sure a second really passed since the last auth reply . Maybe
* a second auth reply arrived while we were stuck on the mutex .
* Check for a little less than the timeout to protect from scheduler
* irregularities .
*/
time_spare = jiffies +
msecs_to_jiffies(WLCORE_PEND_AUTH_ROC_TIMEOUT - 50 );
if (!time_after(time_spare, wlvif->pending_auth_reply_time))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
/* cancel the ROC if active */
wlcore_update_inconn_sta(wl, wlvif, NULL, false );
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static int wl12xx_allocate_rate_policy(struct wl1271 *wl, u8 *idx)
{
u8 policy = find_first_zero_bit(wl->rate_policies_map,
WL12XX_MAX_RATE_POLICIES);
if (policy >= WL12XX_MAX_RATE_POLICIES)
return -EBUSY;
__set_bit(policy, wl->rate_policies_map);
*idx = policy;
return 0 ;
}
static void wl12xx_free_rate_policy(struct wl1271 *wl, u8 *idx)
{
if (WARN_ON(*idx >= WL12XX_MAX_RATE_POLICIES))
return ;
__clear_bit(*idx, wl->rate_policies_map);
*idx = WL12XX_MAX_RATE_POLICIES;
}
static int wlcore_allocate_klv_template(struct wl1271 *wl, u8 *idx)
{
u8 policy = find_first_zero_bit(wl->klv_templates_map,
WLCORE_MAX_KLV_TEMPLATES);
if (policy >= WLCORE_MAX_KLV_TEMPLATES)
return -EBUSY;
__set_bit(policy, wl->klv_templates_map);
*idx = policy;
return 0 ;
}
static void wlcore_free_klv_template(struct wl1271 *wl, u8 *idx)
{
if (WARN_ON(*idx >= WLCORE_MAX_KLV_TEMPLATES))
return ;
__clear_bit(*idx, wl->klv_templates_map);
*idx = WLCORE_MAX_KLV_TEMPLATES;
}
static u8 wl12xx_get_role_type(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
switch (wlvif->bss_type) {
case BSS_TYPE_AP_BSS:
if (wlvif->p2p)
return WL1271_ROLE_P2P_GO;
else if (ieee80211_vif_is_mesh(vif))
return WL1271_ROLE_MESH_POINT;
else
return WL1271_ROLE_AP;
case BSS_TYPE_STA_BSS:
if (wlvif->p2p)
return WL1271_ROLE_P2P_CL;
else
return WL1271_ROLE_STA;
case BSS_TYPE_IBSS:
return WL1271_ROLE_IBSS;
default :
wl1271_error("invalid bss_type: %d" , wlvif->bss_type);
}
return WL12XX_INVALID_ROLE_TYPE;
}
static int wl12xx_init_vif_data(struct wl1271 *wl, struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int i;
/* clear everything but the persistent data */
memset(wlvif, 0 , offsetof(struct wl12xx_vif, persistent));
switch (ieee80211_vif_type_p2p(vif)) {
case NL80211_IFTYPE_P2P_CLIENT:
wlvif->p2p = 1 ;
fallthrough;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_DEVICE:
wlvif->bss_type = BSS_TYPE_STA_BSS;
break ;
case NL80211_IFTYPE_ADHOC:
wlvif->bss_type = BSS_TYPE_IBSS;
break ;
case NL80211_IFTYPE_P2P_GO:
wlvif->p2p = 1 ;
fallthrough;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_MESH_POINT:
wlvif->bss_type = BSS_TYPE_AP_BSS;
break ;
default :
wlvif->bss_type = MAX_BSS_TYPE;
return -EOPNOTSUPP;
}
wlvif->role_id = WL12XX_INVALID_ROLE_ID;
wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
wlvif->bss_type == BSS_TYPE_IBSS) {
/* init sta/ibss data */
wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
wl12xx_allocate_rate_policy(wl, &wlvif->sta.basic_rate_idx);
wl12xx_allocate_rate_policy(wl, &wlvif->sta.ap_rate_idx);
wl12xx_allocate_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
wlcore_allocate_klv_template(wl, &wlvif->sta.klv_template_id);
wlvif->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
wlvif->basic_rate = CONF_TX_RATE_MASK_BASIC;
wlvif->rate_set = CONF_TX_RATE_MASK_BASIC;
} else {
/* init ap data */
wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
wl12xx_allocate_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
wl12xx_allocate_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
for (i = 0 ; i < CONF_TX_MAX_AC_COUNT; i++)
wl12xx_allocate_rate_policy(wl,
&wlvif->ap.ucast_rate_idx[i]);
wlvif->basic_rate_set = CONF_TX_ENABLED_RATES;
/*
* TODO : check if basic_rate shouldn ' t be
* wl1271_tx_min_rate_get ( wl , wlvif - > basic_rate_set ) ;
* instead ( the same thing for STA above ) .
*/
wlvif->basic_rate = CONF_TX_ENABLED_RATES;
/* TODO: this seems to be used only for STA, check it */
wlvif->rate_set = CONF_TX_ENABLED_RATES;
}
wlvif->bitrate_masks[NL80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
wlvif->bitrate_masks[NL80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
wlvif->beacon_int = WL1271_DEFAULT_BEACON_INT;
/*
* mac80211 configures some values globally , while we treat them
* per - interface . thus , on init , we have to copy them from wl
*/
wlvif->band = wl->band;
wlvif->channel = wl->channel;
wlvif->power_level = wl->power_level;
wlvif->channel_type = wl->channel_type;
INIT_WORK(&wlvif->rx_streaming_enable_work,
wl1271_rx_streaming_enable_work);
INIT_WORK(&wlvif->rx_streaming_disable_work,
wl1271_rx_streaming_disable_work);
INIT_WORK(&wlvif->rc_update_work, wlcore_rc_update_work);
INIT_DELAYED_WORK(&wlvif->channel_switch_work,
wlcore_channel_switch_work);
INIT_DELAYED_WORK(&wlvif->connection_loss_work,
wlcore_connection_loss_work);
INIT_DELAYED_WORK(&wlvif->pending_auth_complete_work,
wlcore_pending_auth_complete_work);
INIT_LIST_HEAD(&wlvif->list);
timer_setup(&wlvif->rx_streaming_timer, wl1271_rx_streaming_timer, 0 );
return 0 ;
}
static int wl12xx_init_fw(struct wl1271 *wl)
{
int retries = WL1271_BOOT_RETRIES;
bool booted = false ;
struct wiphy *wiphy = wl->hw->wiphy;
int ret;
while (retries) {
retries--;
ret = wl12xx_chip_wakeup(wl, false );
if (ret < 0 )
goto power_off;
ret = wl->ops->boot(wl);
if (ret < 0 )
goto power_off;
ret = wl1271_hw_init(wl);
if (ret < 0 )
goto irq_disable;
booted = true ;
break ;
irq_disable:
mutex_unlock(&wl->mutex);
/* Unlocking the mutex in the middle of handling is
inherently unsafe . In this case we deem it safe to do ,
because we need to let any possibly pending IRQ out of
the system ( and while we are WLCORE_STATE_OFF the IRQ
work function will not do anything . ) Also , any other
possible concurrent operations will fail due to the
current state, hence the wl1271 struct should be safe. */
wlcore_disable_interrupts(wl);
wl1271_flush_deferred_work(wl);
cancel_work_sync(&wl->netstack_work);
mutex_lock(&wl->mutex);
power_off:
wl1271_power_off(wl);
}
if (!booted) {
wl1271_error("firmware boot failed despite %d retries" ,
WL1271_BOOT_RETRIES);
goto out;
}
wl1271_info("firmware booted (%s)" , wl->chip.fw_ver_str);
/* update hw/fw version info in wiphy struct */
wiphy->hw_version = wl->chip.id;
strscpy(wiphy->fw_version, wl->chip.fw_ver_str,
sizeof (wiphy->fw_version));
/*
* Now we know if 11 a is supported ( info from the NVS ) , so disable
* 11 a channels if not supported
*/
if (!wl->enable_11a)
wiphy->bands[NL80211_BAND_5GHZ]->n_channels = 0 ;
wl1271_debug(DEBUG_MAC80211, "11a is %ssupported" ,
wl->enable_11a ? "" : "not " );
wl->state = WLCORE_STATE_ON;
out:
return ret;
}
static bool wl12xx_dev_role_started(struct wl12xx_vif *wlvif)
{
return wlvif->dev_hlid != WL12XX_INVALID_LINK_ID;
}
/*
* Check whether a fw switch ( i . e . moving from one loaded
* fw to another ) is needed . This function is also responsible
* for updating wl - > last_vif_count , so it must be called before
* loading a non - plt fw ( so the correct fw ( single - role / multi - role )
* will be used ) .
*/
static bool wl12xx_need_fw_change(struct wl1271 *wl,
struct vif_counter_data vif_counter_data,
bool add)
{
enum wl12xx_fw_type current_fw = wl->fw_type;
u8 vif_count = vif_counter_data.counter;
if (test_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags))
return false ;
/* increase the vif count if this is a new vif */
if (add && !vif_counter_data.cur_vif_running)
vif_count++;
wl->last_vif_count = vif_count;
/* no need for fw change if the device is OFF */
if (wl->state == WLCORE_STATE_OFF)
return false ;
/* no need for fw change if a single fw is used */
if (!wl->mr_fw_name)
return false ;
if (vif_count > 1 && current_fw == WL12XX_FW_TYPE_NORMAL)
return true ;
if (vif_count <= 1 && current_fw == WL12XX_FW_TYPE_MULTI)
return true ;
return false ;
}
/*
* Enter " forced psm " . Make sure the sta is in psm against the ap ,
* to make the fw switch a bit more disconnection - persistent .
*/
static void wl12xx_force_active_psm(struct wl1271 *wl)
{
struct wl12xx_vif *wlvif;
wl12xx_for_each_wlvif_sta(wl, wlvif) {
wl1271_ps_set_mode(wl, wlvif, STATION_POWER_SAVE_MODE);
}
}
struct wlcore_hw_queue_iter_data {
unsigned long hw_queue_map[BITS_TO_LONGS(WLCORE_NUM_MAC_ADDRESSES)];
/* current vif */
struct ieee80211_vif *vif;
/* is the current vif among those iterated */
bool cur_running;
};
static void wlcore_hw_queue_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct wlcore_hw_queue_iter_data *iter_data = data;
if (vif->type == NL80211_IFTYPE_P2P_DEVICE ||
WARN_ON_ONCE(vif->hw_queue[0 ] == IEEE80211_INVAL_HW_QUEUE))
return ;
if (iter_data->cur_running || vif == iter_data->vif) {
iter_data->cur_running = true ;
return ;
}
__set_bit(vif->hw_queue[0 ] / NUM_TX_QUEUES, iter_data->hw_queue_map);
}
static int wlcore_allocate_hw_queue_base(struct wl1271 *wl,
struct wl12xx_vif *wlvif)
{
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
struct wlcore_hw_queue_iter_data iter_data = {};
int i, q_base;
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
return 0 ;
}
iter_data.vif = vif;
/* mark all bits taken by active interfaces */
ieee80211_iterate_active_interfaces_atomic(wl->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
wlcore_hw_queue_iter, &iter_data);
/* the current vif is already running in mac80211 (resume/recovery) */
if (iter_data.cur_running) {
wlvif->hw_queue_base = vif->hw_queue[0 ];
wl1271_debug(DEBUG_MAC80211,
"using pre-allocated hw queue base %d" ,
wlvif->hw_queue_base);
/* interface type might have changed type */
goto adjust_cab_queue;
}
q_base = find_first_zero_bit(iter_data.hw_queue_map,
WLCORE_NUM_MAC_ADDRESSES);
if (q_base >= WLCORE_NUM_MAC_ADDRESSES)
return -EBUSY;
wlvif->hw_queue_base = q_base * NUM_TX_QUEUES;
wl1271_debug(DEBUG_MAC80211, "allocating hw queue base: %d" ,
wlvif->hw_queue_base);
for (i = 0 ; i < NUM_TX_QUEUES; i++) {
wl->queue_stop_reasons[wlvif->hw_queue_base + i] = 0 ;
/* register hw queues in mac80211 */
vif->hw_queue[i] = wlvif->hw_queue_base + i;
}
adjust_cab_queue:
/* the last places are reserved for cab queues per interface */
if (wlvif->bss_type == BSS_TYPE_AP_BSS)
vif->cab_queue = NUM_TX_QUEUES * WLCORE_NUM_MAC_ADDRESSES +
wlvif->hw_queue_base / NUM_TX_QUEUES;
else
vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
return 0 ;
}
static int wl1271_op_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct vif_counter_data vif_count;
int ret = 0 ;
u8 role_type;
if (wl->plt) {
wl1271_error("Adding Interface not allowed while in PLT mode" );
return -EBUSY;
}
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_UAPSD |
IEEE80211_VIF_SUPPORTS_CQM_RSSI;
wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM" ,
ieee80211_vif_type_p2p(vif), vif->addr);
wl12xx_get_vif_count(hw, vif, &vif_count);
mutex_lock(&wl->mutex);
/*
* in some very corner case HW recovery scenarios its possible to
* get here before _ _ wl1271_op_remove_interface is complete , so
* opt out if that is the case .
*/
if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) ||
test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) {
ret = -EBUSY;
goto out_unlock;
}
ret = wl12xx_init_vif_data(wl, vif);
if (ret < 0 )
goto out_unlock;
wlvif->wl = wl;
role_type = wl12xx_get_role_type(wl, wlvif);
if (role_type == WL12XX_INVALID_ROLE_TYPE) {
ret = -EINVAL;
goto out_unlock;
}
ret = wlcore_allocate_hw_queue_base(wl, wlvif);
if (ret < 0 )
goto out_unlock;
/*
* TODO : after the nvs issue will be solved , move this block
* to start ( ) , and make sure here the driver is ON .
*/
if (wl->state == WLCORE_STATE_OFF) {
/*
* we still need this in order to configure the fw
* while uploading the nvs
*/
memcpy(wl->addresses[0 ].addr, vif->addr, ETH_ALEN);
ret = wl12xx_init_fw(wl);
if (ret < 0 )
goto out_unlock;
}
/*
* Call runtime PM only after possible wl12xx_init_fw ( ) above
* is done . Otherwise we do not have interrupts enabled .
*/
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out_unlock;
if (wl12xx_need_fw_change(wl, vif_count, true )) {
wl12xx_force_active_psm(wl);
set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
mutex_unlock(&wl->mutex);
wl1271_recovery_work(&wl->recovery_work);
return 0 ;
}
if (!wlcore_is_p2p_mgmt(wlvif)) {
ret = wl12xx_cmd_role_enable(wl, vif->addr,
role_type, &wlvif->role_id);
if (ret < 0 )
goto out;
ret = wl1271_init_vif_specific(wl, vif);
if (ret < 0 )
goto out;
} else {
ret = wl12xx_cmd_role_enable(wl, vif->addr, WL1271_ROLE_DEVICE,
&wlvif->dev_role_id);
if (ret < 0 )
goto out;
/* needed mainly for configuring rate policies */
ret = wl1271_sta_hw_init(wl, wlvif);
if (ret < 0 )
goto out;
}
list_add(&wlvif->list, &wl->wlvif_list);
set_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags);
if (wlvif->bss_type == BSS_TYPE_AP_BSS)
wl->ap_count++;
else
wl->sta_count++;
out:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out_unlock:
mutex_unlock(&wl->mutex);
return ret;
}
static void __wl1271_op_remove_interface(struct wl1271 *wl,
struct ieee80211_vif *vif,
bool reset_tx_queues)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int i, ret;
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface" );
if (!test_and_clear_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
return ;
/* because of hardware recovery, we may get here twice */
if (wl->state == WLCORE_STATE_OFF)
return ;
wl1271_info("down" );
if (wl->scan.state != WL1271_SCAN_STATE_IDLE &&
wl->scan_wlvif == wlvif) {
struct cfg80211_scan_info info = {
.aborted = true ,
};
/*
* Rearm the tx watchdog just before idling scan . This
* prevents just - finished scans from triggering the watchdog
*/
wl12xx_rearm_tx_watchdog_locked(wl);
wl->scan.state = WL1271_SCAN_STATE_IDLE;
memset(wl->scan.scanned_ch, 0 , sizeof (wl->scan.scanned_ch));
wl->scan_wlvif = NULL;
wl->scan.req = NULL;
ieee80211_scan_completed(wl->hw, &info);
}
if (wl->sched_vif == wlvif)
wl->sched_vif = NULL;
if (wl->roc_vif == vif) {
wl->roc_vif = NULL;
ieee80211_remain_on_channel_expired(wl->hw);
}
if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
/* disable active roles */
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto deinit;
if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
wlvif->bss_type == BSS_TYPE_IBSS) {
if (wl12xx_dev_role_started(wlvif))
wl12xx_stop_dev(wl, wlvif);
}
if (!wlcore_is_p2p_mgmt(wlvif)) {
ret = wl12xx_cmd_role_disable(wl, &wlvif->role_id);
if (ret < 0 ) {
pm_runtime_put_noidle(wl->dev);
goto deinit;
}
} else {
ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
if (ret < 0 ) {
pm_runtime_put_noidle(wl->dev);
goto deinit;
}
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
}
deinit:
wl12xx_tx_reset_wlvif(wl, wlvif);
/* clear all hlids (except system_hlid) */
wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
wlvif->bss_type == BSS_TYPE_IBSS) {
wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
wl12xx_free_rate_policy(wl, &wlvif->sta.basic_rate_idx);
wl12xx_free_rate_policy(wl, &wlvif->sta.ap_rate_idx);
wl12xx_free_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
wlcore_free_klv_template(wl, &wlvif->sta.klv_template_id);
} else {
wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
wl12xx_free_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
wl12xx_free_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
for (i = 0 ; i < CONF_TX_MAX_AC_COUNT; i++)
wl12xx_free_rate_policy(wl,
&wlvif->ap.ucast_rate_idx[i]);
wl1271_free_ap_keys(wl, wlvif);
}
dev_kfree_skb(wlvif->probereq);
wlvif->probereq = NULL;
if (wl->last_wlvif == wlvif)
wl->last_wlvif = NULL;
list_del(&wlvif->list);
memset(wlvif->ap.sta_hlid_map, 0 , sizeof (wlvif->ap.sta_hlid_map));
wlvif->role_id = WL12XX_INVALID_ROLE_ID;
wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
if (is_ap)
wl->ap_count--;
else
wl->sta_count--;
/*
* Last AP , have more stations . Configure sleep auth according to STA .
* Don ' t do thin on unintended recovery .
*/
if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) &&
!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags))
goto unlock;
if (wl->ap_count == 0 && is_ap) {
/* mask ap events */
wl->event_mask &= ~wl->ap_event_mask;
wl1271_event_unmask(wl);
}
if (wl->ap_count == 0 && is_ap && wl->sta_count) {
u8 sta_auth = wl->conf.conn.sta_sleep_auth;
/* Configure for power according to debugfs */
if (sta_auth != WL1271_PSM_ILLEGAL)
wl1271_acx_sleep_auth(wl, sta_auth);
/* Configure for ELP power saving */
else
wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);
}
unlock:
mutex_unlock(&wl->mutex);
timer_delete_sync(&wlvif->rx_streaming_timer);
cancel_work_sync(&wlvif->rx_streaming_enable_work);
cancel_work_sync(&wlvif->rx_streaming_disable_work);
cancel_work_sync(&wlvif->rc_update_work);
cancel_delayed_work_sync(&wlvif->connection_loss_work);
cancel_delayed_work_sync(&wlvif->channel_switch_work);
cancel_delayed_work_sync(&wlvif->pending_auth_complete_work);
mutex_lock(&wl->mutex);
}
static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct wl12xx_vif *iter;
struct vif_counter_data vif_count;
wl12xx_get_vif_count(hw, vif, &vif_count);
mutex_lock(&wl->mutex);
if (wl->state == WLCORE_STATE_OFF ||
!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
goto out;
/*
* wl - > vif can be null here if someone shuts down the interface
* just when hardware recovery has been started .
*/
wl12xx_for_each_wlvif(wl, iter) {
if (iter != wlvif)
continue ;
__wl1271_op_remove_interface(wl, vif, true );
break ;
}
WARN_ON(iter != wlvif);
if (wl12xx_need_fw_change(wl, vif_count, false )) {
wl12xx_force_active_psm(wl);
set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
wl12xx_queue_recovery_work(wl);
}
out:
mutex_unlock(&wl->mutex);
}
static int wl12xx_op_change_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum nl80211_iftype new_type, bool p2p)
{
struct wl1271 *wl = hw->priv;
int ret;
set_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags);
wl1271_op_remove_interface(hw, vif);
vif->type = new_type;
vif->p2p = p2p;
ret = wl1271_op_add_interface(hw, vif);
clear_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags);
return ret;
}
static int wlcore_join(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret;
bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
/*
* One of the side effects of the JOIN command is that is clears
* WPA / WPA2 keys from the chipset . Performing a JOIN while associated
* to a WPA / WPA2 access point will therefore kill the data - path .
* Currently the only valid scenario for JOIN during association
* is on roaming , in which case we will also be given new keys .
* Keep the below message for now , unless it starts bothering
* users who really like to roam a lot : )
*/
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
wl1271_info("JOIN while associated." );
/* clear encryption type */
wlvif->encryption_type = KEY_NONE;
if (is_ibss)
ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
else
ret = wl12xx_cmd_role_start_sta(wl, wlvif);
return ret;
}
static int wl1271_ssid_set(struct wl12xx_vif *wlvif, struct sk_buff *skb,
int offset)
{
u8 ssid_len;
const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
skb->len - offset);
if (!ptr) {
wl1271_error("No SSID in IEs!" );
return -ENOENT;
}
ssid_len = ptr[1 ];
if (ssid_len > IEEE80211_MAX_SSID_LEN) {
wl1271_error("SSID is too long!" );
return -EINVAL;
}
wlvif->ssid_len = ssid_len;
memcpy(wlvif->ssid, ptr+2 , ssid_len);
return 0 ;
}
static int wlcore_set_ssid(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
struct sk_buff *skb;
int ieoffset;
/* we currently only support setting the ssid from the ap probe req */
if (wlvif->bss_type != BSS_TYPE_STA_BSS)
return -EINVAL;
skb = ieee80211_ap_probereq_get(wl->hw, vif);
if (!skb)
return -EINVAL;
ieoffset = offsetof(struct ieee80211_mgmt,
u.probe_req.variable);
wl1271_ssid_set(wlvif, skb, ieoffset);
dev_kfree_skb(skb);
return 0 ;
}
static int wlcore_set_assoc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct ieee80211_bss_conf *bss_conf,
u32 sta_rate_set)
{
struct ieee80211_vif *vif = container_of(bss_conf, struct ieee80211_vif,
bss_conf);
int ieoffset;
int ret;
wlvif->aid = vif->cfg.aid;
wlvif->channel_type = cfg80211_get_chandef_type(&bss_conf->chanreq.oper);
wlvif->beacon_int = bss_conf->beacon_int;
wlvif->wmm_enabled = bss_conf->qos;
set_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags);
/*
* with wl1271 , we don ' t need to update the
* beacon_int and dtim_period , because the firmware
* updates it by itself when the first beacon is
* received after a join .
*/
ret = wl1271_cmd_build_ps_poll(wl, wlvif, wlvif->aid);
if (ret < 0 )
return ret;
/*
* Get a template for hardware connection maintenance
*/
dev_kfree_skb(wlvif->probereq);
wlvif->probereq = wl1271_cmd_build_ap_probe_req(wl,
wlvif,
NULL);
ieoffset = offsetof(struct ieee80211_mgmt,
u.probe_req.variable);
wl1271_ssid_set(wlvif, wlvif->probereq, ieoffset);
/* enable the connection monitoring feature */
ret = wl1271_acx_conn_monit_params(wl, wlvif, true );
if (ret < 0 )
return ret;
/*
* The join command disable the keep - alive mode , shut down its process ,
* and also clear the template config , so we need to reset it all after
* the join . The acx_aid starts the keep - alive process , and the order
* of the commands below is relevant .
*/
ret = wl1271_acx_keep_alive_mode(wl, wlvif, true );
if (ret < 0 )
return ret;
ret = wl1271_acx_aid(wl, wlvif, wlvif->aid);
if (ret < 0 )
return ret;
ret = wl12xx_cmd_build_klv_null_data(wl, wlvif);
if (ret < 0 )
return ret;
ret = wl1271_acx_keep_alive_config(wl, wlvif,
wlvif->sta.klv_template_id,
ACX_KEEP_ALIVE_TPL_VALID);
if (ret < 0 )
return ret;
/*
* The default fw psm configuration is AUTO , while mac80211 default
* setting is off ( ACTIVE ) , so sync the fw with the correct value .
*/
ret = wl1271_ps_set_mode(wl, wlvif, STATION_ACTIVE_MODE);
if (ret < 0 )
return ret;
if (sta_rate_set) {
wlvif->rate_set =
wl1271_tx_enabled_rates_get(wl,
sta_rate_set,
wlvif->band);
ret = wl1271_acx_sta_rate_policies(wl, wlvif);
if (ret < 0 )
return ret;
}
return ret;
}
static int wlcore_unset_assoc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret;
bool sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
/* make sure we are connected (sta) joined */
if (sta &&
!test_and_clear_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
return false ;
/* make sure we are joined (ibss) */
if (!sta &&
test_and_clear_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags))
return false ;
if (sta) {
/* use defaults when not associated */
wlvif->aid = 0 ;
/* free probe-request template */
dev_kfree_skb(wlvif->probereq);
wlvif->probereq = NULL;
/* disable connection monitor features */
ret = wl1271_acx_conn_monit_params(wl, wlvif, false );
if (ret < 0 )
return ret;
/* Disable the keep-alive feature */
ret = wl1271_acx_keep_alive_mode(wl, wlvif, false );
if (ret < 0 )
return ret;
/* disable beacon filtering */
ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false );
if (ret < 0 )
return ret;
}
if (test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags)) {
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
wl12xx_cmd_stop_channel_switch(wl, wlvif);
ieee80211_chswitch_done(vif, false , 0 );
cancel_delayed_work(&wlvif->channel_switch_work);
}
/* invalidate keep-alive template */
wl1271_acx_keep_alive_config(wl, wlvif,
wlvif->sta.klv_template_id,
ACX_KEEP_ALIVE_TPL_INVALID);
return 0 ;
}
static void wl1271_set_band_rate(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
wlvif->basic_rate_set = wlvif->bitrate_masks[wlvif->band];
wlvif->rate_set = wlvif->basic_rate_set;
}
static void wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
bool idle)
{
bool cur_idle = !test_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
if (idle == cur_idle)
return ;
if (idle) {
clear_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
} else {
/* The current firmware only supports sched_scan in idle */
if (wl->sched_vif == wlvif)
wl->ops->sched_scan_stop(wl, wlvif);
set_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
}
}
static int wl12xx_config_vif(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct ieee80211_conf *conf, u32 changed)
{
int ret;
if (wlcore_is_p2p_mgmt(wlvif))
return 0 ;
if (conf->power_level != wlvif->power_level) {
ret = wl1271_acx_tx_power(wl, wlvif, conf->power_level);
if (ret < 0 )
return ret;
wlvif->power_level = conf->power_level;
}
return 0 ;
}
static int wl1271_op_config(struct ieee80211_hw *hw, int radio_idx, u32 changed)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
struct ieee80211_conf *conf = &hw->conf;
int ret = 0 ;
wl1271_debug(DEBUG_MAC80211, "mac80211 config psm %s power %d %s"
" changed 0x%x" ,
conf->flags & IEEE80211_CONF_PS ? "on" : "off" ,
conf->power_level,
conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use" ,
changed);
mutex_lock(&wl->mutex);
if (changed & IEEE80211_CONF_CHANGE_POWER)
wl->power_level = conf->power_level;
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
/* configure each interface */
wl12xx_for_each_wlvif(wl, wlvif) {
ret = wl12xx_config_vif(wl, wlvif, conf, changed);
if (ret < 0 )
goto out_sleep;
}
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
struct wl1271_filter_params {
bool enabled;
int mc_list_length;
u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
};
static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list)
{
struct wl1271_filter_params *fp;
struct netdev_hw_addr *ha;
fp = kzalloc(sizeof (*fp), GFP_ATOMIC);
if (!fp) {
wl1271_error("Out of memory setting filters." );
return 0 ;
}
/* update multicast filtering parameters */
fp->mc_list_length = 0 ;
if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
fp->enabled = false ;
} else {
fp->enabled = true ;
netdev_hw_addr_list_for_each(ha, mc_list) {
memcpy(fp->mc_list[fp->mc_list_length],
ha->addr, ETH_ALEN);
fp->mc_list_length++;
}
}
return (u64)(unsigned long )fp;
}
#define WL1271_SUPPORTED_FILTERS (FIF_ALLMULTI | \
FIF_FCSFAIL | \
FIF_BCN_PRBRESP_PROMISC | \
FIF_CONTROL | \
FIF_OTHER_BSS)
static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed,
unsigned int *total, u64 multicast)
{
struct wl1271_filter_params *fp = (void *)(unsigned long )multicast;
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
" total %x" , changed, *total);
mutex_lock(&wl->mutex);
*total &= WL1271_SUPPORTED_FILTERS;
changed &= WL1271_SUPPORTED_FILTERS;
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl12xx_for_each_wlvif(wl, wlvif) {
if (wlcore_is_p2p_mgmt(wlvif))
continue ;
if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
if (*total & FIF_ALLMULTI)
ret = wl1271_acx_group_address_tbl(wl, wlvif,
false ,
NULL, 0 );
else if (fp)
ret = wl1271_acx_group_address_tbl(wl, wlvif,
fp->enabled,
fp->mc_list,
fp->mc_list_length);
if (ret < 0 )
goto out_sleep;
}
/*
* If interface in AP mode and created with allmulticast then disable
* the firmware filters so that all multicast packets are passed
* This is mandatory for MDNS based discovery protocols
*/
if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
if (*total & FIF_ALLMULTI) {
ret = wl1271_acx_group_address_tbl(wl, wlvif,
false ,
NULL, 0 );
if (ret < 0 )
goto out_sleep;
}
}
}
/*
* the fw doesn ' t provide an api to configure the filters . instead ,
* the filters configuration is based on the active roles / ROC
* state .
*/
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
kfree(fp);
}
static int wl1271_record_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
u8 id, u8 key_type, u8 key_size,
const u8 *key, u8 hlid, u32 tx_seq_32,
u16 tx_seq_16, bool is_pairwise)
{
struct wl1271_ap_key *ap_key;
int i;
wl1271_debug(DEBUG_CRYPT, "record ap key id %d" , (int )id);
if (key_size > MAX_KEY_SIZE)
return -EINVAL;
/*
* Find next free entry in ap_keys . Also check we are not replacing
* an existing key .
*/
for (i = 0 ; i < MAX_NUM_KEYS; i++) {
if (wlvif->ap.recorded_keys[i] == NULL)
break ;
if (wlvif->ap.recorded_keys[i]->id == id) {
wl1271_warning("trying to record key replacement" );
return -EINVAL;
}
}
if (i == MAX_NUM_KEYS)
return -EBUSY;
ap_key = kzalloc(sizeof (*ap_key), GFP_KERNEL);
if (!ap_key)
return -ENOMEM;
ap_key->id = id;
ap_key->key_type = key_type;
ap_key->key_size = key_size;
memcpy(ap_key->key, key, key_size);
ap_key->hlid = hlid;
ap_key->tx_seq_32 = tx_seq_32;
ap_key->tx_seq_16 = tx_seq_16;
ap_key->is_pairwise = is_pairwise;
wlvif->ap.recorded_keys[i] = ap_key;
return 0 ;
}
static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int i;
for (i = 0 ; i < MAX_NUM_KEYS; i++) {
kfree(wlvif->ap.recorded_keys[i]);
wlvif->ap.recorded_keys[i] = NULL;
}
}
static int wl1271_ap_init_hwenc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int i, ret = 0 ;
struct wl1271_ap_key *key;
bool wep_key_added = false ;
for (i = 0 ; i < MAX_NUM_KEYS; i++) {
u8 hlid;
if (wlvif->ap.recorded_keys[i] == NULL)
break ;
key = wlvif->ap.recorded_keys[i];
hlid = key->hlid;
if (hlid == WL12XX_INVALID_LINK_ID)
hlid = wlvif->ap.bcast_hlid;
ret = wl1271_cmd_set_ap_key(wl, wlvif, KEY_ADD_OR_REPLACE,
key->id, key->key_type,
key->key_size, key->key,
hlid, key->tx_seq_32,
key->tx_seq_16, key->is_pairwise);
if (ret < 0 )
goto out;
if (key->key_type == KEY_WEP)
wep_key_added = true ;
}
if (wep_key_added) {
ret = wl12xx_cmd_set_default_wep_key(wl, wlvif->default_key,
wlvif->ap.bcast_hlid);
if (ret < 0 )
goto out;
}
out:
wl1271_free_ap_keys(wl, wlvif);
return ret;
}
static int wl1271_set_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
u16 action, u8 id, u8 key_type,
u8 key_size, const u8 *key, u32 tx_seq_32,
u16 tx_seq_16, struct ieee80211_sta *sta,
bool is_pairwise)
{
int ret;
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
if (is_ap) {
struct wl1271_station *wl_sta;
u8 hlid;
if (sta) {
wl_sta = (struct wl1271_station *)sta->drv_priv;
hlid = wl_sta->hlid;
} else {
hlid = wlvif->ap.bcast_hlid;
}
if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
/*
* We do not support removing keys after AP shutdown .
* Pretend we do to make mac80211 happy .
*/
if (action != KEY_ADD_OR_REPLACE)
return 0 ;
ret = wl1271_record_ap_key(wl, wlvif, id,
key_type, key_size,
key, hlid, tx_seq_32,
tx_seq_16, is_pairwise);
} else {
ret = wl1271_cmd_set_ap_key(wl, wlvif, action,
id, key_type, key_size,
key, hlid, tx_seq_32,
tx_seq_16, is_pairwise);
}
if (ret < 0 )
return ret;
} else {
const u8 *addr;
static const u8 bcast_addr[ETH_ALEN] = {
0 xff, 0 xff, 0 xff, 0 xff, 0 xff, 0 xff
};
addr = sta ? sta->addr : bcast_addr;
if (is_zero_ether_addr(addr)) {
/* We dont support TX only encryption */
return -EOPNOTSUPP;
}
/* The wl1271 does not allow to remove unicast keys - they
will be cleared automatically on next CMD_JOIN . Ignore the
request silently , as we dont want the mac80211 to emit
an error message. */
if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
return 0 ;
/* don't remove key if hlid was already deleted */
if (action == KEY_REMOVE &&
wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
return 0 ;
ret = wl1271_cmd_set_sta_key(wl, wlvif, action,
id, key_type, key_size,
key, addr, tx_seq_32,
tx_seq_16);
if (ret < 0 )
return ret;
}
return 0 ;
}
static int wlcore_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key_conf)
{
struct wl1271 *wl = hw->priv;
int ret;
bool might_change_spare =
key_conf->cipher == WL1271_CIPHER_SUITE_GEM ||
key_conf->cipher == WLAN_CIPHER_SUITE_TKIP;
if (might_change_spare) {
/*
* stop the queues and flush to ensure the next packets are
* in sync with FW spare block accounting
*/
wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
wl1271_tx_flush(wl);
}
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out_wake_queues;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out_wake_queues;
ret = wlcore_hw_set_key(wl, cmd, vif, sta, key_conf);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out_wake_queues:
if (might_change_spare)
wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
mutex_unlock(&wl->mutex);
return ret;
}
int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key_conf)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
u32 tx_seq_32 = 0 ;
u16 tx_seq_16 = 0 ;
u8 key_type;
u8 hlid;
bool is_pairwise;
wl1271_debug(DEBUG_MAC80211, "mac80211 set key" );
wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p" , cmd, sta);
wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x" ,
key_conf->cipher, key_conf->keyidx,
key_conf->keylen, key_conf->flags);
wl1271_dump(DEBUG_CRYPT, "KEY: " , key_conf->key, key_conf->keylen);
if (wlvif->bss_type == BSS_TYPE_AP_BSS)
if (sta) {
struct wl1271_station *wl_sta = (void *)sta->drv_priv;
hlid = wl_sta->hlid;
} else {
hlid = wlvif->ap.bcast_hlid;
}
else
hlid = wlvif->sta.hlid;
if (hlid != WL12XX_INVALID_LINK_ID) {
u64 tx_seq = wl->links[hlid].total_freed_pkts;
tx_seq_32 = WL1271_TX_SECURITY_HI32(tx_seq);
tx_seq_16 = WL1271_TX_SECURITY_LO16(tx_seq);
}
switch (key_conf->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
key_type = KEY_WEP;
key_conf->hw_key_idx = key_conf->keyidx;
break ;
case WLAN_CIPHER_SUITE_TKIP:
key_type = KEY_TKIP;
key_conf->hw_key_idx = key_conf->keyidx;
break ;
case WLAN_CIPHER_SUITE_CCMP:
key_type = KEY_AES;
key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
break ;
case WL1271_CIPHER_SUITE_GEM:
key_type = KEY_GEM;
break ;
default :
wl1271_error("Unknown key algo 0x%x" , key_conf->cipher);
return -EOPNOTSUPP;
}
is_pairwise = key_conf->flags & IEEE80211_KEY_FLAG_PAIRWISE;
switch (cmd) {
case SET_KEY:
ret = wl1271_set_key(wl, wlvif, KEY_ADD_OR_REPLACE,
key_conf->keyidx, key_type,
key_conf->keylen, key_conf->key,
tx_seq_32, tx_seq_16, sta, is_pairwise);
if (ret < 0 ) {
wl1271_error("Could not add or replace key" );
return ret;
}
/* Store AP encryption key type */
if (wlvif->bss_type == BSS_TYPE_AP_BSS)
wlvif->encryption_type = key_type;
/*
* reconfiguring arp response if the unicast ( or common )
* encryption key type was changed
*/
if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
(sta || key_type == KEY_WEP) &&
wlvif->encryption_type != key_type) {
wlvif->encryption_type = key_type;
ret = wl1271_cmd_build_arp_rsp(wl, wlvif);
if (ret < 0 ) {
wl1271_warning("build arp rsp failed: %d" , ret);
return ret;
}
}
break ;
case DISABLE_KEY:
ret = wl1271_set_key(wl, wlvif, KEY_REMOVE,
key_conf->keyidx, key_type,
key_conf->keylen, key_conf->key,
0 , 0 , sta, is_pairwise);
if (ret < 0 ) {
wl1271_error("Could not remove key" );
return ret;
}
break ;
default :
wl1271_error("Unsupported key cmd 0x%x" , cmd);
return -EOPNOTSUPP;
}
return ret;
}
EXPORT_SYMBOL_GPL(wlcore_set_key);
static void wl1271_op_set_default_key_idx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
int key_idx)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 set default key idx %d" ,
key_idx);
/* we don't handle unsetting of default key */
if (key_idx == -1 )
return ;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out_unlock;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out_unlock;
wlvif->default_key = key_idx;
/* the default WEP key needs to be configured at least once */
if (wlvif->encryption_type == KEY_WEP) {
ret = wl12xx_cmd_set_default_wep_key(wl,
key_idx,
wlvif->sta.hlid);
if (ret < 0 )
goto out_sleep;
}
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out_unlock:
mutex_unlock(&wl->mutex);
}
void wlcore_regdomain_config(struct wl1271 *wl)
{
int ret;
if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
return ;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wlcore_cmd_regdomain_config_locked(wl);
if (ret < 0 ) {
wl12xx_queue_recovery_work(wl);
goto out;
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct cfg80211_scan_request *req = &hw_req->req;
struct wl1271 *wl = hw->priv;
int ret;
u8 *ssid = NULL;
size_t len = 0 ;
wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan" );
if (req->n_ssids) {
ssid = req->ssids[0 ].ssid;
len = req->ssids[0 ].ssid_len;
}
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
/*
* We cannot return - EBUSY here because cfg80211 will expect
* a call to ieee80211_scan_completed if we do - in this case
* there won ' t be any call .
*/
ret = -EAGAIN;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
/* fail if there is any role in ROC */
if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES) {
/* don't allow scanning right now */
ret = -EBUSY;
goto out_sleep;
}
ret = wlcore_scan(hw->priv, vif, ssid, len, req);
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static void wl1271_op_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct cfg80211_scan_info info = {
.aborted = true ,
};
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
ret = wl->ops->scan_stop(wl, wlvif);
if (ret < 0 )
goto out_sleep;
}
/*
* Rearm the tx watchdog just before idling scan . This
* prevents just - finished scans from triggering the watchdog
*/
wl12xx_rearm_tx_watchdog_locked(wl);
wl->scan.state = WL1271_SCAN_STATE_IDLE;
memset(wl->scan.scanned_ch, 0 , sizeof (wl->scan.scanned_ch));
wl->scan_wlvif = NULL;
wl->scan.req = NULL;
ieee80211_scan_completed(wl->hw, &info);
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
cancel_delayed_work_sync(&wl->scan_complete_work);
}
static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl->ops->sched_scan_start(wl, wlvif, req, ies);
if (ret < 0 )
goto out_sleep;
wl->sched_vif = wlvif;
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static int wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl->ops->sched_scan_stop(wl, wlvif);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return 0 ;
}
static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw,
int radio_idx, u32 value)
{
struct wl1271 *wl = hw->priv;
int ret = 0 ;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl1271_acx_frag_threshold(wl, value);
if (ret < 0 )
wl1271_warning("wl1271_op_set_frag_threshold failed: %d" , ret);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx,
u32 value)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
int ret = 0 ;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl12xx_for_each_wlvif(wl, wlvif) {
ret = wl1271_acx_rts_threshold(wl, wlvif, value);
if (ret < 0 )
wl1271_warning("set rts threshold failed: %d" , ret);
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static void wl12xx_remove_ie(struct sk_buff *skb, u8 eid, int ieoffset)
{
int len;
const u8 *next, *end = skb->data + skb->len;
u8 *ie = (u8 *)cfg80211_find_ie(eid, skb->data + ieoffset,
skb->len - ieoffset);
if (!ie)
return ;
len = ie[1 ] + 2 ;
next = ie + len;
memmove(ie, next, end - next);
skb_trim(skb, skb->len - len);
}
static void wl12xx_remove_vendor_ie(struct sk_buff *skb,
unsigned int oui, u8 oui_type,
int ieoffset)
{
int len;
const u8 *next, *end = skb->data + skb->len;
u8 *ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
skb->data + ieoffset,
skb->len - ieoffset);
if (!ie)
return ;
len = ie[1 ] + 2 ;
next = ie + len;
memmove(ie, next, end - next);
skb_trim(skb, skb->len - len);
}
static int wl1271_ap_set_probe_resp_tmpl(struct wl1271 *wl, u32 rates,
struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct sk_buff *skb;
int ret;
skb = ieee80211_proberesp_get(wl->hw, vif);
if (!skb)
return -EOPNOTSUPP;
ret = wl1271_cmd_template_set(wl, wlvif->role_id,
CMD_TEMPL_AP_PROBE_RESPONSE,
skb->data,
skb->len, 0 ,
rates);
dev_kfree_skb(skb);
if (ret < 0 )
goto out;
wl1271_debug(DEBUG_AP, "probe response updated" );
set_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags);
out:
return ret;
}
static int wl1271_ap_set_probe_resp_tmpl_legacy(struct wl1271 *wl,
struct ieee80211_vif *vif,
u8 *probe_rsp_data,
size_t probe_rsp_len,
u32 rates)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
u8 probe_rsp_templ[WL1271_CMD_TEMPL_MAX_SIZE];
int ssid_ie_offset, ie_offset, templ_len;
const u8 *ptr;
/* no need to change probe response if the SSID is set correctly */
if (wlvif->ssid_len > 0 )
return wl1271_cmd_template_set(wl, wlvif->role_id,
CMD_TEMPL_AP_PROBE_RESPONSE,
probe_rsp_data,
probe_rsp_len, 0 ,
rates);
if (probe_rsp_len + vif->cfg.ssid_len > WL1271_CMD_TEMPL_MAX_SIZE) {
wl1271_error("probe_rsp template too big" );
return -EINVAL;
}
/* start searching from IE offset */
ie_offset = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
ptr = cfg80211_find_ie(WLAN_EID_SSID, probe_rsp_data + ie_offset,
probe_rsp_len - ie_offset);
if (!ptr) {
wl1271_error("No SSID in beacon!" );
return -EINVAL;
}
ssid_ie_offset = ptr - probe_rsp_data;
ptr += (ptr[1 ] + 2 );
memcpy(probe_rsp_templ, probe_rsp_data, ssid_ie_offset);
/* insert SSID from bss_conf */
probe_rsp_templ[ssid_ie_offset] = WLAN_EID_SSID;
probe_rsp_templ[ssid_ie_offset + 1 ] = vif->cfg.ssid_len;
memcpy(probe_rsp_templ + ssid_ie_offset + 2 ,
vif->cfg.ssid, vif->cfg.ssid_len);
templ_len = ssid_ie_offset + 2 + vif->cfg.ssid_len;
memcpy(probe_rsp_templ + ssid_ie_offset + 2 + vif->cfg.ssid_len,
ptr, probe_rsp_len - (ptr - probe_rsp_data));
templ_len += probe_rsp_len - (ptr - probe_rsp_data);
return wl1271_cmd_template_set(wl, wlvif->role_id,
CMD_TEMPL_AP_PROBE_RESPONSE,
probe_rsp_templ,
templ_len, 0 ,
rates);
}
static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changed)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret = 0 ;
if (changed & BSS_CHANGED_ERP_SLOT) {
if (bss_conf->use_short_slot)
ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_SHORT);
else
ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_LONG);
if (ret < 0 ) {
wl1271_warning("Set slot time failed %d" , ret);
goto out;
}
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
if (bss_conf->use_short_preamble)
wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_SHORT);
else
wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_LONG);
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
if (bss_conf->use_cts_prot)
ret = wl1271_acx_cts_protect(wl, wlvif,
CTSPROTECT_ENABLE);
else
ret = wl1271_acx_cts_protect(wl, wlvif,
CTSPROTECT_DISABLE);
if (ret < 0 ) {
wl1271_warning("Set ctsprotect failed %d" , ret);
goto out;
}
}
out:
return ret;
}
static int wlcore_set_beacon_template(struct wl1271 *wl,
struct ieee80211_vif *vif,
bool is_ap)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct ieee80211_hdr *hdr;
u32 min_rate;
int ret;
int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif, 0 );
u16 tmpl_id;
if (!beacon) {
ret = -EINVAL;
goto out;
}
wl1271_debug(DEBUG_MASTER, "beacon updated" );
ret = wl1271_ssid_set(wlvif, beacon, ieoffset);
if (ret < 0 ) {
dev_kfree_skb(beacon);
goto out;
}
min_rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
CMD_TEMPL_BEACON;
ret = wl1271_cmd_template_set(wl, wlvif->role_id, tmpl_id,
beacon->data,
beacon->len, 0 ,
min_rate);
if (ret < 0 ) {
dev_kfree_skb(beacon);
goto out;
}
wlvif->wmm_enabled =
cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WMM,
beacon->data + ieoffset,
beacon->len - ieoffset);
/*
* In case we already have a probe - resp beacon set explicitly
* by usermode , don ' t use the beacon data .
*/
if (test_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags))
goto end_bcn;
/* remove TIM ie from probe response */
wl12xx_remove_ie(beacon, WLAN_EID_TIM, ieoffset);
/*
* remove p2p ie from probe response .
* the fw reponds to probe requests that don ' t include
* the p2p ie . probe requests with p2p ie will be passed ,
* and will be responded by the supplicant ( the spec
* forbids including the p2p ie when responding to probe
* requests that didn ' t include it ) .
*/
wl12xx_remove_vendor_ie(beacon, WLAN_OUI_WFA,
WLAN_OUI_TYPE_WFA_P2P, ieoffset);
hdr = (struct ieee80211_hdr *) beacon->data;
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_RESP);
if (is_ap)
ret = wl1271_ap_set_probe_resp_tmpl_legacy(wl, vif,
beacon->data,
beacon->len,
min_rate);
else
ret = wl1271_cmd_template_set(wl, wlvif->role_id,
CMD_TEMPL_PROBE_RESPONSE,
beacon->data,
beacon->len, 0 ,
min_rate);
end_bcn:
dev_kfree_skb(beacon);
if (ret < 0 )
goto out;
out:
return ret;
}
static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changed)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
int ret = 0 ;
if (changed & BSS_CHANGED_BEACON_INT) {
wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d" ,
bss_conf->beacon_int);
wlvif->beacon_int = bss_conf->beacon_int;
}
if ((changed & BSS_CHANGED_AP_PROBE_RESP) && is_ap) {
u32 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
wl1271_ap_set_probe_resp_tmpl(wl, rate, vif);
}
if (changed & BSS_CHANGED_BEACON) {
ret = wlcore_set_beacon_template(wl, vif, is_ap);
if (ret < 0 )
goto out;
if (test_and_clear_bit(WLVIF_FLAG_BEACON_DISABLED,
&wlvif->flags)) {
ret = wlcore_hw_dfs_master_restart(wl, wlvif);
if (ret < 0 )
goto out;
}
}
out:
if (ret != 0 )
wl1271_error("beacon info change failed: %d" , ret);
return ret;
}
/* AP mode changes */
static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changed)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret = 0 ;
if (changed & BSS_CHANGED_BASIC_RATES) {
u32 rates = bss_conf->basic_rates;
wlvif->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates,
wlvif->band);
wlvif->basic_rate = wl1271_tx_min_rate_get(wl,
wlvif->basic_rate_set);
ret = wl1271_init_ap_rates(wl, wlvif);
if (ret < 0 ) {
wl1271_error("AP rate policy change failed %d" , ret);
goto out;
}
ret = wl1271_ap_init_templates(wl, vif);
if (ret < 0 )
goto out;
/* No need to set probe resp template for mesh */
if (!ieee80211_vif_is_mesh(vif)) {
ret = wl1271_ap_set_probe_resp_tmpl(wl,
wlvif->basic_rate,
vif);
if (ret < 0 )
goto out;
}
ret = wlcore_set_beacon_template(wl, vif, true );
if (ret < 0 )
goto out;
}
ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
if (ret < 0 )
goto out;
if (changed & BSS_CHANGED_BEACON_ENABLED) {
if (bss_conf->enable_beacon) {
if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
ret = wl12xx_cmd_role_start_ap(wl, wlvif);
if (ret < 0 )
goto out;
ret = wl1271_ap_init_hwenc(wl, wlvif);
if (ret < 0 )
goto out;
set_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
wl1271_debug(DEBUG_AP, "started AP" );
}
} else {
if (test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
/*
* AP might be in ROC in case we have just
* sent auth reply . handle it .
*/
if (test_bit(wlvif->role_id, wl->roc_map))
wl12xx_croc(wl, wlvif->role_id);
ret = wl12xx_cmd_role_stop_ap(wl, wlvif);
if (ret < 0 )
goto out;
clear_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
clear_bit(WLVIF_FLAG_AP_PROBE_RESP_SET,
&wlvif->flags);
wl1271_debug(DEBUG_AP, "stopped AP" );
}
}
}
ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
if (ret < 0 )
goto out;
/* Handle HT information change */
if ((changed & BSS_CHANGED_HT) &&
(bss_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)) {
ret = wl1271_acx_set_ht_information(wl, wlvif,
bss_conf->ht_operation_mode);
if (ret < 0 ) {
wl1271_warning("Set ht information failed %d" , ret);
goto out;
}
}
out:
return ;
}
static int wlcore_set_bssid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct ieee80211_vif *vif, u32 sta_rate_set)
{
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
u32 rates;
int ret;
wl1271_debug(DEBUG_MAC80211,
"changed_bssid: %pM, aid: %d, bcn_int: %d, brates: 0x%x sta_rate_set: 0x%x" ,
bss_conf->bssid, vif->cfg.aid,
bss_conf->beacon_int,
bss_conf->basic_rates, sta_rate_set);
wlvif->beacon_int = bss_conf->beacon_int;
rates = bss_conf->basic_rates;
wlvif->basic_rate_set =
wl1271_tx_enabled_rates_get(wl, rates,
wlvif->band);
wlvif->basic_rate =
wl1271_tx_min_rate_get(wl,
wlvif->basic_rate_set);
if (sta_rate_set)
wlvif->rate_set =
wl1271_tx_enabled_rates_get(wl,
sta_rate_set,
wlvif->band);
/* we only support sched_scan while not connected */
if (wl->sched_vif == wlvif)
wl->ops->sched_scan_stop(wl, wlvif);
ret = wl1271_acx_sta_rate_policies(wl, wlvif);
if (ret < 0 )
return ret;
ret = wl12xx_cmd_build_null_data(wl, wlvif);
if (ret < 0 )
return ret;
ret = wl1271_build_qos_null_data(wl, wl12xx_wlvif_to_vif(wlvif));
if (ret < 0 )
return ret;
wlcore_set_ssid(wl, wlvif);
set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
return 0 ;
}
static int wlcore_clear_bssid(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
int ret;
/* revert back to minimum rates for the current band */
wl1271_set_band_rate(wl, wlvif);
wlvif->basic_rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
ret = wl1271_acx_sta_rate_policies(wl, wlvif);
if (ret < 0 )
return ret;
if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags)) {
ret = wl12xx_cmd_role_stop_sta(wl, wlvif);
if (ret < 0 )
return ret;
}
clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
return 0 ;
}
/* STA/IBSS mode changes */
static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changed)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
bool do_join = false ;
bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
bool ibss_joined = false ;
u32 sta_rate_set = 0 ;
int ret;
struct ieee80211_sta *sta;
bool sta_exists = false ;
struct ieee80211_sta_ht_cap sta_ht_cap;
if (is_ibss) {
ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
changed);
if (ret < 0 )
goto out;
}
if (changed & BSS_CHANGED_IBSS) {
if (vif->cfg.ibss_joined) {
set_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags);
ibss_joined = true ;
} else {
wlcore_unset_assoc(wl, wlvif);
wl12xx_cmd_role_stop_sta(wl, wlvif);
}
}
if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined)
do_join = true ;
/* Need to update the SSID (for filtering etc) */
if ((changed & BSS_CHANGED_BEACON) && ibss_joined)
do_join = true ;
if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) {
wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s" ,
bss_conf->enable_beacon ? "enabled" : "disabled" );
do_join = true ;
}
if (changed & BSS_CHANGED_IDLE && !is_ibss)
wl1271_sta_handle_idle(wl, wlvif, vif->cfg.idle);
if (changed & BSS_CHANGED_CQM) {
bool enable = false ;
if (bss_conf->cqm_rssi_thold)
enable = true ;
ret = wl1271_acx_rssi_snr_trigger(wl, wlvif, enable,
bss_conf->cqm_rssi_thold,
bss_conf->cqm_rssi_hyst);
if (ret < 0 )
goto out;
wlvif->rssi_thold = bss_conf->cqm_rssi_thold;
}
if (changed & (BSS_CHANGED_BSSID | BSS_CHANGED_HT |
BSS_CHANGED_ASSOC)) {
rcu_read_lock();
sta = ieee80211_find_sta(vif, bss_conf->bssid);
if (sta) {
u8 *rx_mask = sta->deflink.ht_cap.mcs.rx_mask;
/* save the supp_rates of the ap */
sta_rate_set = sta->deflink.supp_rates[wlvif->band];
if (sta->deflink.ht_cap.ht_supported)
sta_rate_set |=
(rx_mask[0 ] << HW_HT_RATES_OFFSET) |
(rx_mask[1 ] << HW_MIMO_RATES_OFFSET);
sta_ht_cap = sta->deflink.ht_cap;
sta_exists = true ;
}
rcu_read_unlock();
}
if (changed & BSS_CHANGED_BSSID) {
if (!is_zero_ether_addr(bss_conf->bssid)) {
ret = wlcore_set_bssid(wl, wlvif, vif,
sta_rate_set);
if (ret < 0 )
goto out;
/* Need to update the BSSID (for filtering etc) */
do_join = true ;
} else {
ret = wlcore_clear_bssid(wl, wlvif);
if (ret < 0 )
goto out;
}
}
if (changed & BSS_CHANGED_IBSS) {
wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d" ,
vif->cfg.ibss_joined);
if (vif->cfg.ibss_joined) {
u32 rates = bss_conf->basic_rates;
wlvif->basic_rate_set =
wl1271_tx_enabled_rates_get(wl, rates,
wlvif->band);
wlvif->basic_rate =
wl1271_tx_min_rate_get(wl,
wlvif->basic_rate_set);
/* by default, use 11b + OFDM rates */
wlvif->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
ret = wl1271_acx_sta_rate_policies(wl, wlvif);
if (ret < 0 )
goto out;
}
}
if ((changed & BSS_CHANGED_BEACON_INFO) && bss_conf->dtim_period) {
/* enable beacon filtering */
ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true );
if (ret < 0 )
goto out;
}
ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
if (ret < 0 )
goto out;
if (do_join) {
ret = wlcore_join(wl, wlvif);
if (ret < 0 ) {
wl1271_warning("cmd join failed %d" , ret);
goto out;
}
}
if (changed & BSS_CHANGED_ASSOC) {
if (vif->cfg.assoc) {
ret = wlcore_set_assoc(wl, wlvif, bss_conf,
sta_rate_set);
if (ret < 0 )
goto out;
if (test_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags))
wl12xx_set_authorized(wl, wlvif);
} else {
wlcore_unset_assoc(wl, wlvif);
}
}
if (changed & BSS_CHANGED_PS) {
if (vif->cfg.ps &&
test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
!test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) {
int ps_mode;
char *ps_mode_str;
if (wl->conf.conn.forced_ps) {
ps_mode = STATION_POWER_SAVE_MODE;
ps_mode_str = "forced" ;
} else {
ps_mode = STATION_AUTO_PS_MODE;
ps_mode_str = "auto" ;
}
wl1271_debug(DEBUG_PSM, "%s ps enabled" , ps_mode_str);
ret = wl1271_ps_set_mode(wl, wlvif, ps_mode);
if (ret < 0 )
wl1271_warning("enter %s ps failed %d" ,
ps_mode_str, ret);
} else if (!vif->cfg.ps &&
test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) {
wl1271_debug(DEBUG_PSM, "auto ps disabled" );
ret = wl1271_ps_set_mode(wl, wlvif,
STATION_ACTIVE_MODE);
if (ret < 0 )
wl1271_warning("exit auto ps failed %d" , ret);
}
}
/* Handle new association with HT. Do this after join. */
if (sta_exists) {
bool enabled =
bss_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT;
ret = wlcore_hw_set_peer_cap(wl,
&sta_ht_cap,
enabled,
wlvif->rate_set,
wlvif->sta.hlid);
if (ret < 0 ) {
wl1271_warning("Set ht cap failed %d" , ret);
goto out;
}
if (enabled) {
ret = wl1271_acx_set_ht_information(wl, wlvif,
bss_conf->ht_operation_mode);
if (ret < 0 ) {
wl1271_warning("Set ht information failed %d" ,
ret);
goto out;
}
}
}
/* Handle arp filtering. Done after join. */
if ((changed & BSS_CHANGED_ARP_FILTER) ||
(!is_ibss && (changed & BSS_CHANGED_QOS))) {
__be32 addr = vif->cfg.arp_addr_list[0 ];
wlvif->sta.qos = bss_conf->qos;
WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS);
if (vif->cfg.arp_addr_cnt == 1 && vif->cfg.assoc) {
wlvif->ip_addr = addr;
/*
* The template should have been configured only upon
* association . however , it seems that the correct ip
* isn ' t being set ( when sending ) , so we have to
* reconfigure the template upon every ip change .
*/
ret = wl1271_cmd_build_arp_rsp(wl, wlvif);
if (ret < 0 ) {
wl1271_warning("build arp rsp failed: %d" , ret);
goto out;
}
ret = wl1271_acx_arp_ip_filter(wl, wlvif,
(ACX_ARP_FILTER_ARP_FILTERING |
ACX_ARP_FILTER_AUTO_ARP),
addr);
} else {
wlvif->ip_addr = 0 ;
ret = wl1271_acx_arp_ip_filter(wl, wlvif, 0 , addr);
}
if (ret < 0 )
goto out;
}
out:
return ;
}
static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u64 changed)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 bss info role %d changed 0x%x" ,
wlvif->role_id, (int )changed);
/*
* make sure to cancel pending disconnections if our association
* state changed
*/
if (!is_ap && (changed & BSS_CHANGED_ASSOC))
cancel_delayed_work_sync(&wlvif->connection_loss_work);
if (is_ap && (changed & BSS_CHANGED_BEACON_ENABLED) &&
!bss_conf->enable_beacon)
wl1271_tx_flush(wl);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
if ((changed & BSS_CHANGED_TXPOWER) &&
bss_conf->txpower != wlvif->power_level) {
ret = wl1271_acx_tx_power(wl, wlvif, bss_conf->txpower);
if (ret < 0 )
goto out;
wlvif->power_level = bss_conf->txpower;
}
if (is_ap)
wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
else
wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static int wlcore_op_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
wl1271_debug(DEBUG_MAC80211, "mac80211 add chanctx %d (type %d)" ,
ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
cfg80211_get_chandef_type(&ctx->def));
return 0 ;
}
static void wlcore_op_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
wl1271_debug(DEBUG_MAC80211, "mac80211 remove chanctx %d (type %d)" ,
ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
cfg80211_get_chandef_type(&ctx->def));
}
static void wlcore_op_change_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx,
u32 changed)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif;
int ret;
int channel = ieee80211_frequency_to_channel(
ctx->def.chan->center_freq);
wl1271_debug(DEBUG_MAC80211,
"mac80211 change chanctx %d (type %d) changed 0x%x" ,
channel, cfg80211_get_chandef_type(&ctx->def), changed);
mutex_lock(&wl->mutex);
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl12xx_for_each_wlvif(wl, wlvif) {
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
rcu_read_lock();
if (rcu_access_pointer(vif->bss_conf.chanctx_conf) != ctx) {
rcu_read_unlock();
continue ;
}
rcu_read_unlock();
/* start radar if needed */
if (changed & IEEE80211_CHANCTX_CHANGE_RADAR &&
wlvif->bss_type == BSS_TYPE_AP_BSS &&
ctx->radar_enabled && !wlvif->radar_enabled &&
ctx->def.chan->dfs_state == NL80211_DFS_USABLE) {
wl1271_debug(DEBUG_MAC80211, "Start radar detection" );
wlcore_hw_set_cac(wl, wlvif, true );
wlvif->radar_enabled = true ;
}
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static int wlcore_op_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int channel = ieee80211_frequency_to_channel(
ctx->def.chan->center_freq);
int ret = -EINVAL;
wl1271_debug(DEBUG_MAC80211,
"mac80211 assign chanctx (role %d) %d (type %d) (radar %d dfs_state %d)" ,
wlvif->role_id, channel,
cfg80211_get_chandef_type(&ctx->def),
ctx->radar_enabled, ctx->def.chan->dfs_state);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wlvif->band = ctx->def.chan->band;
wlvif->channel = channel;
wlvif->channel_type = cfg80211_get_chandef_type(&ctx->def);
/* update default rates according to the band */
wl1271_set_band_rate(wl, wlvif);
if (ctx->radar_enabled &&
ctx->def.chan->dfs_state == NL80211_DFS_USABLE) {
wl1271_debug(DEBUG_MAC80211, "Start radar detection" );
wlcore_hw_set_cac(wl, wlvif, true );
wlvif->radar_enabled = true ;
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return 0 ;
}
static void wlcore_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211,
"mac80211 unassign chanctx (role %d) %d (type %d)" ,
wlvif->role_id,
ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
cfg80211_get_chandef_type(&ctx->def));
wl1271_tx_flush(wl);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
if (wlvif->radar_enabled) {
wl1271_debug(DEBUG_MAC80211, "Stop radar detection" );
wlcore_hw_set_cac(wl, wlvif, false );
wlvif->radar_enabled = false ;
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static int __wlcore_switch_vif_chan(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct ieee80211_chanctx_conf *new_ctx)
{
int channel = ieee80211_frequency_to_channel(
new_ctx->def.chan->center_freq);
wl1271_debug(DEBUG_MAC80211,
"switch vif (role %d) %d -> %d chan_type: %d" ,
wlvif->role_id, wlvif->channel, channel,
cfg80211_get_chandef_type(&new_ctx->def));
if (WARN_ON_ONCE(wlvif->bss_type != BSS_TYPE_AP_BSS))
return 0 ;
WARN_ON(!test_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags));
if (wlvif->radar_enabled) {
wl1271_debug(DEBUG_MAC80211, "Stop radar detection" );
wlcore_hw_set_cac(wl, wlvif, false );
wlvif->radar_enabled = false ;
}
wlvif->band = new_ctx->def.chan->band;
wlvif->channel = channel;
wlvif->channel_type = cfg80211_get_chandef_type(&new_ctx->def);
/* start radar if needed */
if (new_ctx->radar_enabled) {
wl1271_debug(DEBUG_MAC80211, "Start radar detection" );
wlcore_hw_set_cac(wl, wlvif, true );
wlvif->radar_enabled = true ;
}
return 0 ;
}
static int
wlcore_op_switch_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif_chanctx_switch *vifs,
int n_vifs,
enum ieee80211_chanctx_switch_mode mode)
{
struct wl1271 *wl = hw->priv;
int i, ret;
wl1271_debug(DEBUG_MAC80211,
"mac80211 switch chanctx n_vifs %d mode %d" ,
n_vifs, mode);
mutex_lock(&wl->mutex);
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
for (i = 0 ; i < n_vifs; i++) {
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vifs[i].vif);
ret = __wlcore_switch_vif_chan(wl, wlvif, vifs[i].new_ctx);
if (ret)
goto out_sleep;
}
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return 0 ;
}
static int wl1271_op_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
unsigned int link_id, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
u8 ps_scheme;
int ret = 0 ;
if (wlcore_is_p2p_mgmt(wlvif))
return 0 ;
mutex_lock(&wl->mutex);
wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d" , queue);
if (params->uapsd)
ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
else
ps_scheme = CONF_PS_SCHEME_LEGACY;
if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
/*
* the txop is confed in units of 32 us by the mac80211 ,
* we need us
*/
ret = wl1271_acx_ac_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
params->cw_min, params->cw_max,
params->aifs, params->txop << 5 );
if (ret < 0 )
goto out_sleep;
ret = wl1271_acx_tid_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
CONF_CHANNEL_TYPE_EDCF,
wl1271_tx_get_queue(queue),
ps_scheme, CONF_ACK_POLICY_LEGACY,
0 , 0 );
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
u64 mactime = ULLONG_MAX;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl12xx_acx_tsf_info(wl, wlvif, &mactime);
if (ret < 0 )
goto out_sleep;
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return mactime;
}
static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct ieee80211_conf *conf = &hw->conf;
if (idx != 0 )
return -ENOENT;
survey->channel = conf->chandef.chan;
survey->filled = 0 ;
return 0 ;
}
static int wl1271_allocate_sta(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct ieee80211_sta *sta)
{
struct wl1271_station *wl_sta;
int ret;
if (wl->active_sta_count >= wl->max_ap_stations) {
wl1271_warning("could not allocate HLID - too much stations" );
return -EBUSY;
}
wl_sta = (struct wl1271_station *)sta->drv_priv;
ret = wl12xx_allocate_link(wl, wlvif, &wl_sta->hlid);
if (ret < 0 ) {
wl1271_warning("could not allocate HLID - too many links" );
return -EBUSY;
}
/* use the previous security seq, if this is a recovery/resume */
wl->links[wl_sta->hlid].total_freed_pkts = wl_sta->total_freed_pkts;
set_bit(wl_sta->hlid, wlvif->ap.sta_hlid_map);
memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
wl->active_sta_count++;
return 0 ;
}
void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid)
{
if (!test_bit(hlid, wlvif->ap.sta_hlid_map))
return ;
clear_bit(hlid, wlvif->ap.sta_hlid_map);
__clear_bit(hlid, &wl->ap_ps_map);
__clear_bit(hlid, &wl->ap_fw_ps_map);
/*
* save the last used PN in the private part of iee80211_sta ,
* in case of recovery / suspend
*/
wlcore_save_freed_pkts_addr(wl, wlvif, hlid, wl->links[hlid].addr);
wl12xx_free_link(wl, wlvif, &hlid);
wl->active_sta_count--;
/*
* rearm the tx watchdog when the last STA is freed - give the FW a
* chance to return STA - buffered packets before complaining .
*/
if (wl->active_sta_count == 0 )
wl12xx_rearm_tx_watchdog_locked(wl);
}
static int wl12xx_sta_add(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct ieee80211_sta *sta)
{
struct wl1271_station *wl_sta;
int ret = 0 ;
u8 hlid;
wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d" , (int )sta->aid);
ret = wl1271_allocate_sta(wl, wlvif, sta);
if (ret < 0 )
return ret;
wl_sta = (struct wl1271_station *)sta->drv_priv;
hlid = wl_sta->hlid;
ret = wl12xx_cmd_add_peer(wl, wlvif, sta, hlid);
if (ret < 0 )
wl1271_free_sta(wl, wlvif, hlid);
return ret;
}
static int wl12xx_sta_remove(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct ieee80211_sta *sta)
{
struct wl1271_station *wl_sta;
int ret = 0 , id;
wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d" , (int )sta->aid);
wl_sta = (struct wl1271_station *)sta->drv_priv;
id = wl_sta->hlid;
if (WARN_ON(!test_bit(id, wlvif->ap.sta_hlid_map)))
return -EINVAL;
ret = wl12xx_cmd_remove_peer(wl, wlvif, wl_sta->hlid);
if (ret < 0 )
return ret;
wl1271_free_sta(wl, wlvif, wl_sta->hlid);
return ret;
}
static void wlcore_roc_if_possible(struct wl1271 *wl,
struct wl12xx_vif *wlvif)
{
if (find_first_bit(wl->roc_map,
WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES)
return ;
if (WARN_ON(wlvif->role_id == WL12XX_INVALID_ROLE_ID))
return ;
wl12xx_roc(wl, wlvif, wlvif->role_id, wlvif->band, wlvif->channel);
}
/*
* when wl_sta is NULL , we treat this call as if coming from a
* pending auth reply .
* wl - > mutex must be taken and the FW must be awake when the call
* takes place .
*/
void wlcore_update_inconn_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct wl1271_station *wl_sta, bool in_conn)
{
if (in_conn) {
if (WARN_ON(wl_sta && wl_sta->in_connection))
return ;
if (!wlvif->ap_pending_auth_reply &&
!wlvif->inconn_count)
wlcore_roc_if_possible(wl, wlvif);
if (wl_sta) {
wl_sta->in_connection = true ;
wlvif->inconn_count++;
} else {
wlvif->ap_pending_auth_reply = true ;
}
} else {
if (wl_sta && !wl_sta->in_connection)
return ;
if (WARN_ON(!wl_sta && !wlvif->ap_pending_auth_reply))
return ;
if (WARN_ON(wl_sta && !wlvif->inconn_count))
return ;
if (wl_sta) {
wl_sta->in_connection = false ;
wlvif->inconn_count--;
} else {
wlvif->ap_pending_auth_reply = false ;
}
if (!wlvif->inconn_count && !wlvif->ap_pending_auth_reply &&
test_bit(wlvif->role_id, wl->roc_map))
wl12xx_croc(wl, wlvif->role_id);
}
}
static int wl12xx_update_sta_state(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
struct wl1271_station *wl_sta;
bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
int ret;
wl_sta = (struct wl1271_station *)sta->drv_priv;
/* Add station (AP mode) */
if (is_ap &&
old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC) {
ret = wl12xx_sta_add(wl, wlvif, sta);
if (ret)
return ret;
wl_sta->fw_added = true ;
wlcore_update_inconn_sta(wl, wlvif, wl_sta, true );
}
/* Remove station (AP mode) */
if (is_ap &&
old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH) {
wl_sta->fw_added = false ;
/* must not fail */
wl12xx_sta_remove(wl, wlvif, sta);
wlcore_update_inconn_sta(wl, wlvif, wl_sta, false );
}
/* Authorize station (AP mode) */
if (is_ap &&
new_state == IEEE80211_STA_AUTHORIZED) {
ret = wl12xx_cmd_set_peer_state(wl, wlvif, wl_sta->hlid);
if (ret < 0 )
return ret;
ret = wl1271_acx_set_ht_capabilities(wl, &sta->deflink.ht_cap,
true ,
wl_sta->hlid);
if (ret)
return ret;
wlcore_update_inconn_sta(wl, wlvif, wl_sta, false );
}
/* Authorize station */
if (is_sta &&
new_state == IEEE80211_STA_AUTHORIZED) {
set_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
ret = wl12xx_set_authorized(wl, wlvif);
if (ret)
return ret;
}
if (is_sta &&
old_state == IEEE80211_STA_AUTHORIZED &&
new_state == IEEE80211_STA_ASSOC) {
clear_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
clear_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags);
}
/* save seq number on disassoc (suspend) */
if (is_sta &&
old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH) {
wlcore_save_freed_pkts(wl, wlvif, wlvif->sta.hlid, sta);
wlvif->total_freed_pkts = 0 ;
}
/* restore seq number on assoc (resume) */
if (is_sta &&
old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC) {
wlvif->total_freed_pkts = wl_sta->total_freed_pkts;
}
/* clear ROCs on failure or authorization */
if (is_sta &&
(new_state == IEEE80211_STA_AUTHORIZED ||
new_state == IEEE80211_STA_NOTEXIST)) {
if (test_bit(wlvif->role_id, wl->roc_map))
wl12xx_croc(wl, wlvif->role_id);
}
if (is_sta &&
old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
if (find_first_bit(wl->roc_map,
WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES) {
WARN_ON(wlvif->role_id == WL12XX_INVALID_ROLE_ID);
wl12xx_roc(wl, wlvif, wlvif->role_id,
wlvif->band, wlvif->channel);
}
}
return 0 ;
}
static int wl12xx_op_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 sta %d state=%d->%d" ,
sta->aid, old_state, new_state);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EBUSY;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl12xx_update_sta_state(wl, wlvif, sta, old_state, new_state);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
if (new_state < old_state)
return 0 ;
return ret;
}
static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
u8 hlid, *ba_bitmap;
struct ieee80211_sta *sta = params->sta;
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
u16 *ssn = ¶ms->ssn;
wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu action %d tid %d" , action,
tid);
/* sanity check - the fields in FW are only 8bits wide */
if (WARN_ON(tid > 0 xFF))
return -ENOTSUPP;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EAGAIN;
goto out;
}
if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
hlid = wlvif->sta.hlid;
} else if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
struct wl1271_station *wl_sta;
wl_sta = (struct wl1271_station *)sta->drv_priv;
hlid = wl_sta->hlid;
} else {
ret = -EINVAL;
goto out;
}
ba_bitmap = &wl->links[hlid].ba_bitmap;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d" ,
tid, action);
switch (action) {
case IEEE80211_AMPDU_RX_START:
if (!wlvif->ba_support || !wlvif->ba_allowed) {
ret = -ENOTSUPP;
break ;
}
if (wl->ba_rx_session_count >= wl->ba_rx_session_count_max) {
ret = -EBUSY;
wl1271_debug(DEBUG_RX, "exceeded max RX BA sessions" );
break ;
}
if (*ba_bitmap & BIT(tid)) {
ret = -EINVAL;
wl1271_error("cannot enable RX BA session on active "
"tid: %d" , tid);
break ;
}
ret = wl12xx_acx_set_ba_receiver_session(wl, tid, *ssn, true ,
hlid,
params->buf_size);
if (!ret) {
*ba_bitmap |= BIT(tid);
wl->ba_rx_session_count++;
}
break ;
case IEEE80211_AMPDU_RX_STOP:
if (!(*ba_bitmap & BIT(tid))) {
/*
* this happens on reconfig - so only output a debug
* message for now , and don ' t fail the function .
*/
wl1271_debug(DEBUG_MAC80211,
"no active RX BA session on tid: %d" ,
tid);
ret = 0 ;
break ;
}
ret = wl12xx_acx_set_ba_receiver_session(wl, tid, 0 , false ,
hlid, 0 );
if (!ret) {
*ba_bitmap &= ~BIT(tid);
wl->ba_rx_session_count--;
}
break ;
/*
* The BA initiator session management in FW independently .
* Falling break here on purpose for all TX APDU commands .
*/
case IEEE80211_AMPDU_TX_START:
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
case IEEE80211_AMPDU_TX_OPERATIONAL:
ret = -EINVAL;
break ;
default :
wl1271_error("Incorrect ampdu action id=%x\n" , action);
ret = -EINVAL;
}
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static int wl12xx_set_bitrate_mask(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const struct cfg80211_bitrate_mask *mask)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct wl1271 *wl = hw->priv;
int i, ret = 0 ;
wl1271_debug(DEBUG_MAC80211, "mac80211 set_bitrate_mask 0x%x 0x%x" ,
mask->control[NL80211_BAND_2GHZ].legacy,
mask->control[NL80211_BAND_5GHZ].legacy);
mutex_lock(&wl->mutex);
for (i = 0 ; i < WLCORE_NUM_BANDS; i++)
wlvif->bitrate_masks[i] =
wl1271_tx_enabled_rates_get(wl,
mask->control[i].legacy,
i);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
wl1271_set_band_rate(wl, wlvif);
wlvif->basic_rate =
wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
ret = wl1271_acx_sta_rate_policies(wl, wlvif);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
}
out:
mutex_unlock(&wl->mutex);
return ret;
}
static void wl12xx_op_channel_switch(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *ch_switch)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 channel switch" );
wl1271_tx_flush(wl);
mutex_lock(&wl->mutex);
if (unlikely(wl->state == WLCORE_STATE_OFF)) {
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
ieee80211_chswitch_done(vif, false , 0 );
goto out;
} else if (unlikely(wl->state != WLCORE_STATE_ON)) {
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
/* TODO: change mac80211 to pass vif as param */
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
unsigned long delay_usec;
ret = wl->ops->channel_switch(wl, wlvif, ch_switch);
if (ret)
goto out_sleep;
set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
/* indicate failure 5 seconds after channel switch time */
delay_usec = ieee80211_tu_to_usec(wlvif->beacon_int) *
ch_switch->count;
ieee80211_queue_delayed_work(hw, &wlvif->channel_switch_work,
usecs_to_jiffies(delay_usec) +
msecs_to_jiffies(5000 ));
}
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static const void *wlcore_get_beacon_ie(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
u8 eid)
{
int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
struct sk_buff *beacon =
ieee80211_beacon_get(wl->hw, wl12xx_wlvif_to_vif(wlvif), 0 );
if (!beacon)
return NULL;
return cfg80211_find_ie(eid,
beacon->data + ieoffset,
beacon->len - ieoffset);
}
static int wlcore_get_csa_count(struct wl1271 *wl, struct wl12xx_vif *wlvif,
u8 *csa_count)
{
const u8 *ie;
const struct ieee80211_channel_sw_ie *ie_csa;
ie = wlcore_get_beacon_ie(wl, wlvif, WLAN_EID_CHANNEL_SWITCH);
if (!ie)
return -EINVAL;
ie_csa = (struct ieee80211_channel_sw_ie *)&ie[2 ];
*csa_count = ie_csa->count;
return 0 ;
}
static void wlcore_op_channel_switch_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_chan_def *chandef)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct ieee80211_channel_switch ch_switch = {
.block_tx = true ,
.chandef = *chandef,
};
int ret;
wl1271_debug(DEBUG_MAC80211,
"mac80211 channel switch beacon (role %d)" ,
wlvif->role_id);
ret = wlcore_get_csa_count(wl, wlvif, &ch_switch.count);
if (ret < 0 ) {
wl1271_error("error getting beacon (for CSA counter)" );
return ;
}
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EBUSY;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl->ops->channel_switch(wl, wlvif, &ch_switch);
if (ret)
goto out_sleep;
set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static void wlcore_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u32 queues, bool drop)
{
struct wl1271 *wl = hw->priv;
wl1271_tx_flush(wl);
}
static int wlcore_op_remain_on_channel(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *chan,
int duration,
enum ieee80211_roc_type type)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct wl1271 *wl = hw->priv;
int channel, active_roc, ret = 0 ;
channel = ieee80211_frequency_to_channel(chan->center_freq);
wl1271_debug(DEBUG_MAC80211, "mac80211 roc %d (%d)" ,
channel, wlvif->role_id);
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/* return EBUSY if we can't ROC right now */
active_roc = find_first_bit(wl->roc_map, WL12XX_MAX_ROLES);
if (wl->roc_vif || active_roc < WL12XX_MAX_ROLES) {
wl1271_warning("active roc on role %d" , active_roc);
ret = -EBUSY;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = wl12xx_start_dev(wl, wlvif, chan->band, channel);
if (ret < 0 )
goto out_sleep;
wl->roc_vif = vif;
ieee80211_queue_delayed_work(hw, &wl->roc_complete_work,
msecs_to_jiffies(duration));
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static int __wlcore_roc_completed(struct wl1271 *wl)
{
struct wl12xx_vif *wlvif;
int ret;
/* already completed */
if (unlikely(!wl->roc_vif))
return 0 ;
wlvif = wl12xx_vif_to_data(wl->roc_vif);
if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
return -EBUSY;
ret = wl12xx_stop_dev(wl, wlvif);
if (ret < 0 )
return ret;
wl->roc_vif = NULL;
return 0 ;
}
static int wlcore_roc_completed(struct wl1271 *wl)
{
int ret;
wl1271_debug(DEBUG_MAC80211, "roc complete" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON)) {
ret = -EBUSY;
goto out;
}
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out;
ret = __wlcore_roc_completed(wl);
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
return ret;
}
static void wlcore_roc_complete_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
int ret;
dwork = to_delayed_work(work);
wl = container_of(dwork, struct wl1271, roc_complete_work);
ret = wlcore_roc_completed(wl);
if (!ret)
ieee80211_remain_on_channel_expired(wl->hw);
}
static int wlcore_op_cancel_remain_on_channel(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wl1271 *wl = hw->priv;
wl1271_debug(DEBUG_MAC80211, "mac80211 croc" );
/* TODO: per-vif */
wl1271_tx_flush(wl);
/*
* we can ' t just flush_work here , because it might deadlock
* ( as we might get called from the same workqueue )
*/
cancel_delayed_work_sync(&wl->roc_complete_work);
wlcore_roc_completed(wl);
return 0 ;
}
static void wlcore_op_sta_rc_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_link_sta *link_sta,
u32 changed)
{
struct ieee80211_sta *sta = link_sta->sta;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
wl1271_debug(DEBUG_MAC80211, "mac80211 sta_rc_update" );
if (!(changed & IEEE80211_RC_BW_CHANGED))
return ;
/* this callback is atomic, so schedule a new work */
wlvif->rc_update_bw = sta->deflink.bandwidth;
memcpy(&wlvif->rc_ht_cap, &sta->deflink.ht_cap,
sizeof (sta->deflink.ht_cap));
ieee80211_queue_work(hw, &wlvif->rc_update_work);
}
static void wlcore_op_sta_statistics(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct station_info *sinfo)
{
struct wl1271 *wl = hw->priv;
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
s8 rssi_dbm;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 get_rssi" );
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
ret = pm_runtime_resume_and_get(wl->dev);
if (ret < 0 )
goto out_sleep;
ret = wlcore_acx_average_rssi(wl, wlvif, &rssi_dbm);
if (ret < 0 )
goto out_sleep;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
sinfo->signal = rssi_dbm;
out_sleep:
pm_runtime_mark_last_busy(wl->dev);
pm_runtime_put_autosuspend(wl->dev);
out:
mutex_unlock(&wl->mutex);
}
static u32 wlcore_op_get_expected_throughput(struct ieee80211_hw *hw,
struct ieee80211_sta *sta)
{
struct wl1271_station *wl_sta = (struct wl1271_station *)sta->drv_priv;
struct wl1271 *wl = hw->priv;
u8 hlid = wl_sta->hlid;
/* return in units of Kbps */
return (wl->links[hlid].fw_rate_mbps * 1000 );
}
static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
{
struct wl1271 *wl = hw->priv;
bool ret = false ;
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
/* packets are considered pending if in the TX queue or the FW */
ret = (wl1271_tx_total_queue_count(wl) > 0 ) || (wl->tx_frames_cnt > 0 );
out:
mutex_unlock(&wl->mutex);
return ret;
}
/* can't be const, mac80211 writes to this */
static struct ieee80211_rate wl1271_rates[] = {
{ .bitrate = 10 ,
.hw_value = CONF_HW_BIT_RATE_1MBPS,
.hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
{ .bitrate = 20 ,
.hw_value = CONF_HW_BIT_RATE_2MBPS,
.hw_value_short = CONF_HW_BIT_RATE_2MBPS,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55 ,
.hw_value = CONF_HW_BIT_RATE_5_5MBPS,
.hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110 ,
.hw_value = CONF_HW_BIT_RATE_11MBPS,
.hw_value_short = CONF_HW_BIT_RATE_11MBPS,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60 ,
.hw_value = CONF_HW_BIT_RATE_6MBPS,
.hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
{ .bitrate = 90 ,
.hw_value = CONF_HW_BIT_RATE_9MBPS,
.hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
{ .bitrate = 120 ,
.hw_value = CONF_HW_BIT_RATE_12MBPS,
.hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
{ .bitrate = 180 ,
.hw_value = CONF_HW_BIT_RATE_18MBPS,
.hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
{ .bitrate = 240 ,
.hw_value = CONF_HW_BIT_RATE_24MBPS,
.hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
{ .bitrate = 360 ,
.hw_value = CONF_HW_BIT_RATE_36MBPS,
.hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
{ .bitrate = 480 ,
.hw_value = CONF_HW_BIT_RATE_48MBPS,
.hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
{ .bitrate = 540 ,
.hw_value = CONF_HW_BIT_RATE_54MBPS,
.hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
};
/* can't be const, mac80211 writes to this */
static struct ieee80211_channel wl1271_channels[] = {
{ .hw_value = 1 , .center_freq = 2412 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 2 , .center_freq = 2417 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 3 , .center_freq = 2422 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 4 , .center_freq = 2427 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 5 , .center_freq = 2432 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 6 , .center_freq = 2437 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 7 , .center_freq = 2442 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 8 , .center_freq = 2447 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 9 , .center_freq = 2452 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 10 , .center_freq = 2457 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 11 , .center_freq = 2462 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 12 , .center_freq = 2467 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 13 , .center_freq = 2472 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 14 , .center_freq = 2484 , .max_power = WLCORE_MAX_TXPWR },
};
/* can't be const, mac80211 writes to this */
static struct ieee80211_supported_band wl1271_band_2ghz = {
.channels = wl1271_channels,
.n_channels = ARRAY_SIZE(wl1271_channels),
.bitrates = wl1271_rates,
.n_bitrates = ARRAY_SIZE(wl1271_rates),
};
/* 5 GHz data rates for WL1273 */
static struct ieee80211_rate wl1271_rates_5ghz[] = {
{ .bitrate = 60 ,
.hw_value = CONF_HW_BIT_RATE_6MBPS,
.hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
{ .bitrate = 90 ,
.hw_value = CONF_HW_BIT_RATE_9MBPS,
.hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
{ .bitrate = 120 ,
.hw_value = CONF_HW_BIT_RATE_12MBPS,
.hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
{ .bitrate = 180 ,
.hw_value = CONF_HW_BIT_RATE_18MBPS,
.hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
{ .bitrate = 240 ,
.hw_value = CONF_HW_BIT_RATE_24MBPS,
.hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
{ .bitrate = 360 ,
.hw_value = CONF_HW_BIT_RATE_36MBPS,
.hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
{ .bitrate = 480 ,
.hw_value = CONF_HW_BIT_RATE_48MBPS,
.hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
{ .bitrate = 540 ,
.hw_value = CONF_HW_BIT_RATE_54MBPS,
.hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
};
/* 5 GHz band channels for WL1273 */
static struct ieee80211_channel wl1271_channels_5ghz[] = {
{ .hw_value = 8 , .center_freq = 5040 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 12 , .center_freq = 5060 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 16 , .center_freq = 5080 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 34 , .center_freq = 5170 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 36 , .center_freq = 5180 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 38 , .center_freq = 5190 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 40 , .center_freq = 5200 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 42 , .center_freq = 5210 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 44 , .center_freq = 5220 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 46 , .center_freq = 5230 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 48 , .center_freq = 5240 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 52 , .center_freq = 5260 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 56 , .center_freq = 5280 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 60 , .center_freq = 5300 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 64 , .center_freq = 5320 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 100 , .center_freq = 5500 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 104 , .center_freq = 5520 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 108 , .center_freq = 5540 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 112 , .center_freq = 5560 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 116 , .center_freq = 5580 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 120 , .center_freq = 5600 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 124 , .center_freq = 5620 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 128 , .center_freq = 5640 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 132 , .center_freq = 5660 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 136 , .center_freq = 5680 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 140 , .center_freq = 5700 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 149 , .center_freq = 5745 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 153 , .center_freq = 5765 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 157 , .center_freq = 5785 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 161 , .center_freq = 5805 , .max_power = WLCORE_MAX_TXPWR },
{ .hw_value = 165 , .center_freq = 5825 , .max_power = WLCORE_MAX_TXPWR },
};
static struct ieee80211_supported_band wl1271_band_5ghz = {
.channels = wl1271_channels_5ghz,
.n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
.bitrates = wl1271_rates_5ghz,
.n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
};
static const struct ieee80211_ops wl1271_ops = {
.start = wl1271_op_start,
.stop = wlcore_op_stop,
.add_interface = wl1271_op_add_interface,
.remove_interface = wl1271_op_remove_interface,
.change_interface = wl12xx_op_change_interface,
#ifdef CONFIG_PM
.suspend = wl1271_op_suspend,
.resume = wl1271_op_resume,
#endif
.config = wl1271_op_config,
.prepare_multicast = wl1271_op_prepare_multicast,
.configure_filter = wl1271_op_configure_filter,
.tx = wl1271_op_tx,
.wake_tx_queue = ieee80211_handle_wake_tx_queue,
.set_key = wlcore_op_set_key,
.hw_scan = wl1271_op_hw_scan,
.cancel_hw_scan = wl1271_op_cancel_hw_scan,
.sched_scan_start = wl1271_op_sched_scan_start,
.sched_scan_stop = wl1271_op_sched_scan_stop,
.bss_info_changed = wl1271_op_bss_info_changed,
.set_frag_threshold = wl1271_op_set_frag_threshold,
.set_rts_threshold = wl1271_op_set_rts_threshold,
.conf_tx = wl1271_op_conf_tx,
.get_tsf = wl1271_op_get_tsf,
.get_survey = wl1271_op_get_survey,
.sta_state = wl12xx_op_sta_state,
.ampdu_action = wl1271_op_ampdu_action,
.tx_frames_pending = wl1271_tx_frames_pending,
.set_bitrate_mask = wl12xx_set_bitrate_mask,
.set_default_unicast_key = wl1271_op_set_default_key_idx,
.channel_switch = wl12xx_op_channel_switch,
.channel_switch_beacon = wlcore_op_channel_switch_beacon,
.flush = wlcore_op_flush,
.remain_on_channel = wlcore_op_remain_on_channel,
.cancel_remain_on_channel = wlcore_op_cancel_remain_on_channel,
.add_chanctx = wlcore_op_add_chanctx,
.remove_chanctx = wlcore_op_remove_chanctx,
.change_chanctx = wlcore_op_change_chanctx,
.assign_vif_chanctx = wlcore_op_assign_vif_chanctx,
.unassign_vif_chanctx = wlcore_op_unassign_vif_chanctx,
.switch_vif_chanctx = wlcore_op_switch_vif_chanctx,
.link_sta_rc_update = wlcore_op_sta_rc_update,
.sta_statistics = wlcore_op_sta_statistics,
.get_expected_throughput = wlcore_op_get_expected_throughput,
CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
};
u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum nl80211_band band)
{
u8 idx;
BUG_ON(band >= 2 );
if (unlikely(rate >= wl->hw_tx_rate_tbl_size)) {
wl1271_error("Illegal RX rate from HW: %d" , rate);
return 0 ;
}
idx = wl->band_rate_to_idx[band][rate];
if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
wl1271_error("Unsupported RX rate from HW: %d" , rate);
return 0 ;
}
return idx;
}
static void wl12xx_derive_mac_addresses(struct wl1271 *wl, u32 oui, u32 nic)
{
int i;
wl1271_debug(DEBUG_PROBE, "base address: oui %06x nic %06x" ,
oui, nic);
if (nic + WLCORE_NUM_MAC_ADDRESSES - wl->num_mac_addr > 0 xffffff)
wl1271_warning("NIC part of the MAC address wraps around!" );
for (i = 0 ; i < wl->num_mac_addr; i++) {
wl->addresses[i].addr[0 ] = (u8)(oui >> 16 );
wl->addresses[i].addr[1 ] = (u8)(oui >> 8 );
wl->addresses[i].addr[2 ] = (u8) oui;
wl->addresses[i].addr[3 ] = (u8)(nic >> 16 );
wl->addresses[i].addr[4 ] = (u8)(nic >> 8 );
wl->addresses[i].addr[5 ] = (u8) nic;
nic++;
}
/* we may be one address short at the most */
WARN_ON(wl->num_mac_addr + 1 < WLCORE_NUM_MAC_ADDRESSES);
/*
* turn on the LAA bit in the first address and use it as
* the last address .
*/
if (wl->num_mac_addr < WLCORE_NUM_MAC_ADDRESSES) {
int idx = WLCORE_NUM_MAC_ADDRESSES - 1 ;
memcpy(&wl->addresses[idx], &wl->addresses[0 ],
sizeof (wl->addresses[0 ]));
/* LAA bit */
wl->addresses[idx].addr[0 ] |= BIT(1 );
}
wl->hw->wiphy->n_addresses = WLCORE_NUM_MAC_ADDRESSES;
wl->hw->wiphy->addresses = wl->addresses;
}
static int wl12xx_get_hw_info(struct wl1271 *wl)
{
int ret;
ret = wlcore_read_reg(wl, REG_CHIP_ID_B, &wl->chip.id);
if (ret < 0 )
goto out;
wl->fuse_oui_addr = 0 ;
wl->fuse_nic_addr = 0 ;
ret = wl->ops->get_pg_ver(wl, &wl->hw_pg_ver);
if (ret < 0 )
goto out;
if (wl->ops->get_mac)
ret = wl->ops->get_mac(wl);
out:
return ret;
}
static int wl1271_register_hw(struct wl1271 *wl)
{
int ret;
u32 oui_addr = 0 , nic_addr = 0 ;
struct platform_device *pdev = wl->pdev;
struct wlcore_platdev_data *pdev_data = dev_get_platdata(&pdev->dev);
if (wl->mac80211_registered)
return 0 ;
if (wl->nvs_len >= 12 ) {
/* NOTE: The wl->nvs->nvs element must be first, in
* order to simplify the casting , we assume it is at
* the beginning of the wl - > nvs structure .
*/
u8 *nvs_ptr = (u8 *)wl->nvs;
oui_addr =
(nvs_ptr[11 ] << 16 ) + (nvs_ptr[10 ] << 8 ) + nvs_ptr[6 ];
nic_addr =
(nvs_ptr[5 ] << 16 ) + (nvs_ptr[4 ] << 8 ) + nvs_ptr[3 ];
}
/* if the MAC address is zeroed in the NVS derive from fuse */
if (oui_addr == 0 && nic_addr == 0 ) {
oui_addr = wl->fuse_oui_addr;
/* fuse has the BD_ADDR, the WLAN addresses are the next two */
nic_addr = wl->fuse_nic_addr + 1 ;
}
if (oui_addr == 0 xdeadbe && nic_addr == 0 xef0000) {
wl1271_warning("Detected unconfigured mac address in nvs, derive from fuse instead." );
if (!strcmp(pdev_data->family->name, "wl18xx" )) {
wl1271_warning("This default nvs file can be removed from the file system" );
} else {
wl1271_warning("Your device performance is not optimized." );
wl1271_warning("Please use the calibrator tool to configure your device." );
}
if (wl->fuse_oui_addr == 0 && wl->fuse_nic_addr == 0 ) {
wl1271_warning("Fuse mac address is zero. using random mac" );
/* Use TI oui and a random nic */
oui_addr = WLCORE_TI_OUI_ADDRESS;
nic_addr = get_random_u32();
} else {
oui_addr = wl->fuse_oui_addr;
/* fuse has the BD_ADDR, the WLAN addresses are the next two */
nic_addr = wl->fuse_nic_addr + 1 ;
}
}
wl12xx_derive_mac_addresses(wl, oui_addr, nic_addr);
ret = ieee80211_register_hw(wl->hw);
if (ret < 0 ) {
wl1271_error("unable to register mac80211 hw: %d" , ret);
goto out;
}
wl->mac80211_registered = true ;
wl1271_debugfs_init(wl);
wl1271_notice("loaded" );
out:
return ret;
}
static void wl1271_unregister_hw(struct wl1271 *wl)
{
if (wl->plt)
wl1271_plt_stop(wl);
ieee80211_unregister_hw(wl->hw);
wl->mac80211_registered = false ;
}
static int wl1271_init_ieee80211(struct wl1271 *wl)
{
int i;
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
WL1271_CIPHER_SUITE_GEM,
};
/* The tx descriptor buffer */
wl->hw->extra_tx_headroom = sizeof (struct wl1271_tx_hw_descr);
if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
wl->hw->extra_tx_headroom += WL1271_EXTRA_SPACE_TKIP;
/* unit us */
/* FIXME: find a proper value */
wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
ieee80211_hw_set(wl->hw, SUPPORT_FAST_XMIT);
ieee80211_hw_set(wl->hw, CHANCTX_STA_CSA);
ieee80211_hw_set(wl->hw, SUPPORTS_PER_STA_GTK);
ieee80211_hw_set(wl->hw, QUEUE_CONTROL);
ieee80211_hw_set(wl->hw, TX_AMPDU_SETUP_IN_HW);
ieee80211_hw_set(wl->hw, AMPDU_AGGREGATION);
ieee80211_hw_set(wl->hw, AP_LINK_PS);
ieee80211_hw_set(wl->hw, SPECTRUM_MGMT);
ieee80211_hw_set(wl->hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(wl->hw, CONNECTION_MONITOR);
ieee80211_hw_set(wl->hw, HAS_RATE_CONTROL);
ieee80211_hw_set(wl->hw, SUPPORTS_DYNAMIC_PS);
ieee80211_hw_set(wl->hw, SIGNAL_DBM);
ieee80211_hw_set(wl->hw, SUPPORTS_PS);
ieee80211_hw_set(wl->hw, SUPPORTS_TX_FRAG);
wl->hw->wiphy->cipher_suites = cipher_suites;
wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_P2P_DEVICE) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
#ifdef CONFIG_MAC80211_MESH
BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
BIT(NL80211_IFTYPE_P2P_GO);
wl->hw->wiphy->max_scan_ssids = 1 ;
wl->hw->wiphy->max_sched_scan_ssids = 16 ;
wl->hw->wiphy->max_match_sets = 16 ;
/*
* Maximum length of elements in scanning probe request templates
* should be the maximum length possible for a template , without
* the IEEE80211 header of the template
*/
wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
sizeof (struct ieee80211_header);
wl->hw->wiphy->max_sched_scan_reqs = 1 ;
wl->hw->wiphy->max_sched_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
sizeof (struct ieee80211_header);
wl->hw->wiphy->max_remain_on_channel_duration = 30000 ;
wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD |
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
WIPHY_FLAG_HAS_CHANNEL_SWITCH |
WIPHY_FLAG_IBSS_RSN;
wl->hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;
/* make sure all our channels fit in the scanned_ch bitmask */
BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
ARRAY_SIZE(wl1271_channels_5ghz) >
WL1271_MAX_CHANNELS);
/*
* clear channel flags from the previous usage
* and restore max_power & max_antenna_gain values .
*/
for (i = 0 ; i < ARRAY_SIZE(wl1271_channels); i++) {
wl1271_band_2ghz.channels[i].flags = 0 ;
wl1271_band_2ghz.channels[i].max_power = WLCORE_MAX_TXPWR;
wl1271_band_2ghz.channels[i].max_antenna_gain = 0 ;
}
for (i = 0 ; i < ARRAY_SIZE(wl1271_channels_5ghz); i++) {
wl1271_band_5ghz.channels[i].flags = 0 ;
wl1271_band_5ghz.channels[i].max_power = WLCORE_MAX_TXPWR;
wl1271_band_5ghz.channels[i].max_antenna_gain = 0 ;
}
/*
* We keep local copies of the band structs because we need to
* modify them on a per - device basis .
*/
memcpy(&wl->bands[NL80211_BAND_2GHZ], &wl1271_band_2ghz,
sizeof (wl1271_band_2ghz));
memcpy(&wl->bands[NL80211_BAND_2GHZ].ht_cap,
&wl->ht_cap[NL80211_BAND_2GHZ],
sizeof (*wl->ht_cap));
memcpy(&wl->bands[NL80211_BAND_5GHZ], &wl1271_band_5ghz,
sizeof (wl1271_band_5ghz));
memcpy(&wl->bands[NL80211_BAND_5GHZ].ht_cap,
&wl->ht_cap[NL80211_BAND_5GHZ],
sizeof (*wl->ht_cap));
wl->hw->wiphy->bands[NL80211_BAND_2GHZ] =
&wl->bands[NL80211_BAND_2GHZ];
wl->hw->wiphy->bands[NL80211_BAND_5GHZ] =
&wl->bands[NL80211_BAND_5GHZ];
/*
* allow 4 queues per mac address we support +
* 1 cab queue per mac + one global offchannel Tx queue
*/
wl->hw->queues = (NUM_TX_QUEUES + 1 ) * WLCORE_NUM_MAC_ADDRESSES + 1 ;
/* the last queue is the offchannel queue */
wl->hw->offchannel_tx_hw_queue = wl->hw->queues - 1 ;
wl->hw->max_rates = 1 ;
wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
/* the FW answers probe-requests in AP-mode */
wl->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
wl->hw->wiphy->probe_resp_offload =
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
/* allowed interface combinations */
wl->hw->wiphy->iface_combinations = wl->iface_combinations;
wl->hw->wiphy->n_iface_combinations = wl->n_iface_combinations;
/* register vendor commands */
wlcore_set_vendor_commands(wl->hw->wiphy);
SET_IEEE80211_DEV(wl->hw, wl->dev);
wl->hw->sta_data_size = sizeof (struct wl1271_station);
wl->hw->vif_data_size = sizeof (struct wl12xx_vif);
wl->hw->max_rx_aggregation_subframes = wl->conf.ht.rx_ba_win_size;
return 0 ;
}
struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size, u32 aggr_buf_size,
u32 mbox_size)
{
struct ieee80211_hw *hw;
struct wl1271 *wl;
int i, j, ret;
unsigned int order;
hw = ieee80211_alloc_hw(sizeof (*wl), &wl1271_ops);
if (!hw) {
wl1271_error("could not alloc ieee80211_hw" );
ret = -ENOMEM;
goto err_hw_alloc;
}
wl = hw->priv;
memset(wl, 0 , sizeof (*wl));
wl->priv = kzalloc(priv_size, GFP_KERNEL);
if (!wl->priv) {
wl1271_error("could not alloc wl priv" );
ret = -ENOMEM;
goto err_priv_alloc;
}
INIT_LIST_HEAD(&wl->wlvif_list);
wl->hw = hw;
/*
* wl - > num_links is not configured yet , so just use WLCORE_MAX_LINKS .
* we don ' t allocate any additional resource here , so that ' s fine .
*/
for (i = 0 ; i < NUM_TX_QUEUES; i++)
for (j = 0 ; j < WLCORE_MAX_LINKS; j++)
skb_queue_head_init(&wl->links[j].tx_queue[i]);
skb_queue_head_init(&wl->deferred_rx_queue);
skb_queue_head_init(&wl->deferred_tx_queue);
INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
INIT_WORK(&wl->tx_work, wl1271_tx_work);
INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
INIT_DELAYED_WORK(&wl->roc_complete_work, wlcore_roc_complete_work);
INIT_DELAYED_WORK(&wl->tx_watchdog_work, wl12xx_tx_watchdog_work);
wl->freezable_wq = create_freezable_workqueue("wl12xx_wq" );
if (!wl->freezable_wq) {
ret = -ENOMEM;
goto err_hw;
}
wl->channel = 0 ;
wl->rx_counter = 0 ;
wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
wl->band = NL80211_BAND_2GHZ;
wl->channel_type = NL80211_CHAN_NO_HT;
wl->flags = 0 ;
wl->sg_enabled = true ;
wl->sleep_auth = WL1271_PSM_ILLEGAL;
wl->recovery_count = 0 ;
wl->hw_pg_ver = -1 ;
wl->ap_ps_map = 0 ;
wl->ap_fw_ps_map = 0 ;
wl->quirks = 0 ;
wl->system_hlid = WL12XX_SYSTEM_HLID;
wl->active_sta_count = 0 ;
wl->active_link_count = 0 ;
wl->fwlog_size = 0 ;
/* The system link is always allocated */
__set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
memset(wl->tx_frames_map, 0 , sizeof (wl->tx_frames_map));
for (i = 0 ; i < wl->num_tx_desc; i++)
wl->tx_frames[i] = NULL;
spin_lock_init(&wl->wl_lock);
wl->state = WLCORE_STATE_OFF;
wl->fw_type = WL12XX_FW_TYPE_NONE;
mutex_init(&wl->mutex);
mutex_init(&wl->flush_mutex);
init_completion(&wl->nvs_loading_complete);
order = get_order(aggr_buf_size);
wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
if (!wl->aggr_buf) {
ret = -ENOMEM;
goto err_wq;
}
wl->aggr_buf_size = aggr_buf_size;
wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
if (!wl->dummy_packet) {
ret = -ENOMEM;
goto err_aggr;
}
/* Allocate one page for the FW log */
wl->fwlog = (u8 *)get_zeroed_page(GFP_KERNEL);
if (!wl->fwlog) {
ret = -ENOMEM;
goto err_dummy_packet;
}
wl->mbox_size = mbox_size;
wl->mbox = kmalloc(wl->mbox_size, GFP_KERNEL | GFP_DMA);
if (!wl->mbox) {
ret = -ENOMEM;
goto err_fwlog;
}
wl->buffer_32 = kmalloc(sizeof (*wl->buffer_32), GFP_KERNEL);
if (!wl->buffer_32) {
ret = -ENOMEM;
goto err_mbox;
}
return hw;
err_mbox:
kfree(wl->mbox);
err_fwlog:
free_page((unsigned long )wl->fwlog);
err_dummy_packet:
dev_kfree_skb(wl->dummy_packet);
err_aggr:
free_pages((unsigned long )wl->aggr_buf, order);
err_wq:
destroy_workqueue(wl->freezable_wq);
err_hw:
wl1271_debugfs_exit(wl);
kfree(wl->priv);
err_priv_alloc:
ieee80211_free_hw(hw);
err_hw_alloc:
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(wlcore_alloc_hw);
int wlcore_free_hw(struct wl1271 *wl)
{
/* Unblock any fwlog readers */
mutex_lock(&wl->mutex);
wl->fwlog_size = -1 ;
mutex_unlock(&wl->mutex);
wlcore_sysfs_free(wl);
kfree(wl->buffer_32);
kfree(wl->mbox);
free_page((unsigned long )wl->fwlog);
dev_kfree_skb(wl->dummy_packet);
free_pages((unsigned long )wl->aggr_buf, get_order(wl->aggr_buf_size));
wl1271_debugfs_exit(wl);
vfree(wl->fw);
wl->fw = NULL;
wl->fw_type = WL12XX_FW_TYPE_NONE;
kfree(wl->nvs);
wl->nvs = NULL;
kfree(wl->raw_fw_status);
kfree(wl->fw_status);
kfree(wl->tx_res_if);
destroy_workqueue(wl->freezable_wq);
kfree(wl->priv);
ieee80211_free_hw(wl->hw);
return 0 ;
}
EXPORT_SYMBOL_GPL(wlcore_free_hw);
#ifdef CONFIG_PM
static const struct wiphy_wowlan_support wlcore_wowlan_support = {
.flags = WIPHY_WOWLAN_ANY,
.n_patterns = WL1271_MAX_RX_FILTERS,
.pattern_min_len = 1 ,
.pattern_max_len = WL1271_RX_FILTER_MAX_PATTERN_SIZE,
};
#endif
static irqreturn_t wlcore_hardirq(int irq, void *cookie)
{
return IRQ_WAKE_THREAD;
}
static void wlcore_nvs_cb(const struct firmware *fw, void *context)
{
struct wl1271 *wl = context;
struct platform_device *pdev = wl->pdev;
struct wlcore_platdev_data *pdev_data = dev_get_platdata(&pdev->dev);
struct resource *res;
int ret;
irq_handler_t hardirq_fn = NULL;
if (fw) {
wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
if (!wl->nvs) {
wl1271_error("Could not allocate nvs data" );
goto out;
}
wl->nvs_len = fw->size;
} else if (pdev_data->family->nvs_name) {
wl1271_debug(DEBUG_BOOT, "Could not get nvs file %s" ,
pdev_data->family->nvs_name);
wl->nvs = NULL;
wl->nvs_len = 0 ;
} else {
wl->nvs = NULL;
wl->nvs_len = 0 ;
}
ret = wl->ops->setup(wl);
if (ret < 0 )
goto out_free_nvs;
BUG_ON(wl->num_tx_desc > WLCORE_MAX_TX_DESCRIPTORS);
/* adjust some runtime configuration parameters */
wlcore_adjust_conf(wl);
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0 );
if (!res) {
wl1271_error("Could not get IRQ resource" );
goto out_free_nvs;
}
wl->irq = res->start;
wl->irq_flags = res->flags & IRQF_TRIGGER_MASK;
wl->if_ops = pdev_data->if_ops;
if (wl->irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING))
hardirq_fn = wlcore_hardirq;
else
wl->irq_flags |= IRQF_ONESHOT;
ret = wl12xx_set_power_on(wl);
if (ret < 0 )
goto out_free_nvs;
ret = wl12xx_get_hw_info(wl);
if (ret < 0 ) {
wl1271_error("couldn't get hw info" );
wl1271_power_off(wl);
goto out_free_nvs;
}
ret = request_threaded_irq(wl->irq, hardirq_fn, wlcore_irq,
wl->irq_flags, pdev->name, wl);
if (ret < 0 ) {
wl1271_error("interrupt configuration failed" );
wl1271_power_off(wl);
goto out_free_nvs;
}
#ifdef CONFIG_PM
device_init_wakeup(wl->dev, true );
ret = enable_irq_wake(wl->irq);
if (!ret) {
wl->irq_wake_enabled = true ;
if (pdev_data->pwr_in_suspend)
wl->hw->wiphy->wowlan = &wlcore_wowlan_support;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 1 );
if (res) {
wl->wakeirq = res->start;
wl->wakeirq_flags = res->flags & IRQF_TRIGGER_MASK;
ret = dev_pm_set_dedicated_wake_irq(wl->dev, wl->wakeirq);
if (ret)
wl->wakeirq = -ENODEV;
} else {
wl->wakeirq = -ENODEV;
}
#endif
disable_irq(wl->irq);
wl1271_power_off(wl);
ret = wl->ops->identify_chip(wl);
if (ret < 0 )
goto out_irq;
ret = wl1271_init_ieee80211(wl);
if (ret)
goto out_irq;
ret = wl1271_register_hw(wl);
if (ret)
goto out_irq;
ret = wlcore_sysfs_init(wl);
if (ret)
goto out_unreg;
wl->initialized = true ;
goto out;
out_unreg:
wl1271_unregister_hw(wl);
out_irq:
if (wl->wakeirq >= 0 )
dev_pm_clear_wake_irq(wl->dev);
device_init_wakeup(wl->dev, false );
free_irq(wl->irq, wl);
out_free_nvs:
kfree(wl->nvs);
out:
release_firmware(fw);
complete_all(&wl->nvs_loading_complete);
}
static int __maybe_unused wlcore_runtime_suspend(struct device *dev)
{
struct wl1271 *wl = dev_get_drvdata(dev);
struct wl12xx_vif *wlvif;
int error;
/* We do not enter elp sleep in PLT mode */
if (wl->plt)
return 0 ;
/* Nothing to do if no ELP mode requested */
if (wl->sleep_auth != WL1271_PSM_ELP)
return 0 ;
wl12xx_for_each_wlvif(wl, wlvif) {
if (!test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags) &&
test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
return -EBUSY;
}
wl1271_debug(DEBUG_PSM, "chip to elp" );
error = wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_SLEEP);
if (error < 0 ) {
wl12xx_queue_recovery_work(wl);
return error;
}
set_bit(WL1271_FLAG_IN_ELP, &wl->flags);
return 0 ;
}
static int __maybe_unused wlcore_runtime_resume(struct device *dev)
{
struct wl1271 *wl = dev_get_drvdata(dev);
DECLARE_COMPLETION_ONSTACK(compl );
unsigned long flags;
int ret;
unsigned long start_time = jiffies;
bool recovery = false ;
/* Nothing to do if no ELP mode requested */
if (!test_bit(WL1271_FLAG_IN_ELP, &wl->flags))
return 0 ;
wl1271_debug(DEBUG_PSM, "waking up chip from elp" );
spin_lock_irqsave(&wl->wl_lock, flags);
wl->elp_compl = &compl ;
spin_unlock_irqrestore(&wl->wl_lock, flags);
ret = wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
if (ret < 0 ) {
recovery = true ;
} else if (!test_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags)) {
ret = wait_for_completion_timeout(&compl ,
msecs_to_jiffies(WL1271_WAKEUP_TIMEOUT));
if (ret == 0 ) {
wl1271_warning("ELP wakeup timeout!" );
recovery = true ;
}
}
spin_lock_irqsave(&wl->wl_lock, flags);
wl->elp_compl = NULL;
spin_unlock_irqrestore(&wl->wl_lock, flags);
clear_bit(WL1271_FLAG_IN_ELP, &wl->flags);
if (recovery) {
set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
wl12xx_queue_recovery_work(wl);
} else {
wl1271_debug(DEBUG_PSM, "wakeup time: %u ms" ,
jiffies_to_msecs(jiffies - start_time));
}
return 0 ;
}
static const struct dev_pm_ops wlcore_pm_ops = {
SET_RUNTIME_PM_OPS(wlcore_runtime_suspend,
wlcore_runtime_resume,
NULL)
};
int wlcore_probe(struct wl1271 *wl, struct platform_device *pdev)
{
struct wlcore_platdev_data *pdev_data = dev_get_platdata(&pdev->dev);
const char *nvs_name;
int ret = 0 ;
if (!wl->ops || !wl->ptable || !pdev_data)
return -EINVAL;
wl->dev = &pdev->dev;
wl->pdev = pdev;
platform_set_drvdata(pdev, wl);
if (pdev_data->family && pdev_data->family->nvs_name) {
nvs_name = pdev_data->family->nvs_name;
ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
nvs_name, &pdev->dev, GFP_KERNEL,
wl, wlcore_nvs_cb);
if (ret < 0 ) {
wl1271_error("request_firmware_nowait failed for %s: %d" ,
nvs_name, ret);
complete_all(&wl->nvs_loading_complete);
}
} else {
wlcore_nvs_cb(NULL, wl);
}
wl->dev->driver->pm = &wlcore_pm_ops;
pm_runtime_set_autosuspend_delay(wl->dev, 50 );
pm_runtime_use_autosuspend(wl->dev);
pm_runtime_enable(wl->dev);
return ret;
}
EXPORT_SYMBOL_GPL(wlcore_probe);
void wlcore_remove(struct platform_device *pdev)
{
struct wlcore_platdev_data *pdev_data = dev_get_platdata(&pdev->dev);
struct wl1271 *wl = platform_get_drvdata(pdev);
int error;
error = pm_runtime_get_sync(wl->dev);
if (error < 0 )
dev_warn(wl->dev, "PM runtime failed: %i\n" , error);
wl->dev->driver->pm = NULL;
if (pdev_data->family && pdev_data->family->nvs_name)
wait_for_completion(&wl->nvs_loading_complete);
if (!wl->initialized)
return ;
if (wl->wakeirq >= 0 ) {
dev_pm_clear_wake_irq(wl->dev);
wl->wakeirq = -ENODEV;
}
device_init_wakeup(wl->dev, false );
if (wl->irq_wake_enabled)
disable_irq_wake(wl->irq);
wl1271_unregister_hw(wl);
pm_runtime_put_sync(wl->dev);
pm_runtime_dont_use_autosuspend(wl->dev);
pm_runtime_disable(wl->dev);
free_irq(wl->irq, wl);
wlcore_free_hw(wl);
}
EXPORT_SYMBOL_GPL(wlcore_remove);
u32 wl12xx_debug_level = DEBUG_NONE;
EXPORT_SYMBOL_GPL(wl12xx_debug_level);
module_param_named(debug_level, wl12xx_debug_level, uint, 0600 );
MODULE_PARM_DESC(debug_level, "wl12xx debugging level" );
module_param_named(fwlog, fwlog_param, charp, 0 );
MODULE_PARM_DESC(fwlog,
"FW logger options: continuous, dbgpins or disable" );
module_param(fwlog_mem_blocks, int , 0600 );
MODULE_PARM_DESC(fwlog_mem_blocks, "fwlog mem_blocks" );
module_param(bug_on_recovery, int , 0600 );
MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery" );
module_param(no_recovery, int , 0600 );
MODULE_PARM_DESC(no_recovery, "Prevent HW recovery. FW will remain stuck." );
MODULE_DESCRIPTION("TI WLAN core driver" );
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>" );
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>" );
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