--- /dev/null
- wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
+
+ /*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+ #include <linux/module.h>
+ #include <linux/firmware.h>
+ #include <linux/delay.h>
+ #include <linux/spi/spi.h>
+ #include <linux/crc32.h>
+ #include <linux/etherdevice.h>
+ #include <linux/vmalloc.h>
+ #include <linux/platform_device.h>
+ #include <linux/slab.h>
+ #include <linux/wl12xx.h>
+ #include <linux/sched.h>
+ #include <linux/interrupt.h>
+
+ #include "wlcore.h"
+ #include "debug.h"
+ #include "wl12xx_80211.h"
+ #include "io.h"
+ #include "event.h"
+ #include "tx.h"
+ #include "rx.h"
+ #include "ps.h"
+ #include "init.h"
+ #include "debugfs.h"
+ #include "cmd.h"
+ #include "boot.h"
+ #include "testmode.h"
+ #include "scan.h"
+ #include "hw_ops.h"
+
+ #define WL1271_BOOT_RETRIES 3
+
+ #define WL1271_BOOT_RETRIES 3
+
+ static char *fwlog_param;
+ static bool bug_on_recovery;
+ static bool no_recovery;
+
+ static void __wl1271_op_remove_interface(struct wl1271 *wl,
+ struct ieee80211_vif *vif,
+ bool reset_tx_queues);
+ static void wl1271_op_stop(struct ieee80211_hw *hw);
+ 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->sta.hlid);
+ if (ret < 0)
+ return ret;
+
+ wl12xx_croc(wl, wlvif->role_id);
+
+ wl1271_info("Association completed.");
+ return 0;
+ }
+
+ static int wl1271_reg_notify(struct wiphy *wiphy,
+ struct regulatory_request *request)
+ {
+ struct ieee80211_supported_band *band;
+ struct ieee80211_channel *ch;
+ int i;
+
+ band = wiphy->bands[IEEE80211_BAND_5GHZ];
+ for (i = 0; i < band->n_channels; i++) {
+ ch = &band->channels[i];
+ if (ch->flags & IEEE80211_CHAN_DISABLED)
+ continue;
+
+ if (ch->flags & IEEE80211_CHAN_RADAR)
+ ch->flags |= IEEE80211_CHAN_NO_IBSS |
+ IEEE80211_CHAN_PASSIVE_SCAN;
+
+ }
+
+ return 0;
+ }
+
+ 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 */
+ del_timer_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 = wl1271_ps_elp_wakeup(wl);
+ 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:
+ wl1271_ps_elp_sleep(wl);
+ 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 = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1271_set_rx_streaming(wl, wlvif, false);
+ if (ret)
+ goto out_sleep;
+
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+ out:
+ mutex_unlock(&wl->mutex);
+ }
+
+ static void wl1271_rx_streaming_timer(unsigned long data)
+ {
+ struct wl12xx_vif *wlvif = (struct wl12xx_vif *)data;
+ 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 wl12xx_tx_watchdog_work(struct work_struct *work)
+ {
+ struct delayed_work *dwork;
+ struct wl1271 *wl;
+
+ dwork = container_of(work, struct delayed_work, work);
+ wl = container_of(dwork, struct wl1271, tx_watchdog_work);
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ 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)
+ {
+ /* Adjust settings according to optional module parameters */
+ if (fwlog_param) {
+ if (!strcmp(fwlog_param, "continuous")) {
+ wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
+ } else if (!strcmp(fwlog_param, "ondemand")) {
+ wl->conf.fwlog.mode = WL12XX_FWLOG_ON_DEMAND;
+ } 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);
+ }
+ }
+ }
+
+ static int wl1271_plt_init(struct wl1271 *wl)
+ {
+ int ret;
+
+ ret = wl->ops->hw_init(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl1271_acx_init_mem_config(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl12xx_acx_mem_cfg(wl);
+ if (ret < 0)
+ goto out_free_memmap;
+
+ /* Enable data path */
+ ret = wl1271_cmd_data_path(wl, 1);
+ if (ret < 0)
+ goto out_free_memmap;
+
+ /* Configure for CAM power saving (ie. always active) */
+ ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
+ if (ret < 0)
+ goto out_free_memmap;
+
+ /* configure PM */
+ ret = wl1271_acx_pm_config(wl);
+ if (ret < 0)
+ goto out_free_memmap;
+
+ return 0;
+
+ out_free_memmap:
+ kfree(wl->target_mem_map);
+ wl->target_mem_map = NULL;
+
+ return ret;
+ }
+
+ static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
+ struct wl12xx_vif *wlvif,
+ u8 hlid, u8 tx_pkts)
+ {
+ bool fw_ps, single_sta;
+
+ fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
+ single_sta = (wl->active_sta_count == 1);
+
+ /*
+ * 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 station. In this
+ * case FW-memory congestion is not a problem.
+ */
+ else if (!single_sta && 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)
+ {
+ struct wl1271_link *lnk;
+ u32 cur_fw_ps_map;
+ u8 hlid, cnt;
+
+ /* TODO: also use link_fast_bitmap here */
+
+ cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
+ if (wl->ap_fw_ps_map != cur_fw_ps_map) {
+ wl1271_debug(DEBUG_PSM,
+ "link ps prev 0x%x cur 0x%x changed 0x%x",
+ 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, WL12XX_MAX_LINKS) {
+ lnk = &wl->links[hlid];
+ cnt = status->counters.tx_lnk_free_pkts[hlid] -
+ lnk->prev_freed_pkts;
+
+ lnk->prev_freed_pkts = status->counters.tx_lnk_free_pkts[hlid];
+ lnk->allocated_pkts -= cnt;
+
+ wl12xx_irq_ps_regulate_link(wl, wlvif, hlid,
+ lnk->allocated_pkts);
+ }
+ }
+
+ static void wl12xx_fw_status(struct wl1271 *wl,
+ struct wl_fw_status *status)
+ {
+ struct wl12xx_vif *wlvif;
+ struct timespec ts;
+ u32 old_tx_blk_count = wl->tx_blocks_available;
+ int avail, freed_blocks;
+ int i;
+ size_t status_len;
+
+ status_len = sizeof(*status) + wl->fw_status_priv_len;
+
+ wlcore_raw_read_data(wl, REG_RAW_FW_STATUS_ADDR, status,
+ status_len, false);
+
+ 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]) & 0xff;
+
+ wl->tx_pkts_freed[i] = status->counters.tx_released_pkts[i];
+ }
+
+ /* prevent wrap-around in total blocks counter */
+ if (likely(wl->tx_blocks_freed <=
+ le32_to_cpu(status->total_released_blks)))
+ freed_blocks = le32_to_cpu(status->total_released_blks) -
+ wl->tx_blocks_freed;
+ else
+ freed_blocks = 0x100000000LL - wl->tx_blocks_freed +
+ le32_to_cpu(status->total_released_blks);
+
+ wl->tx_blocks_freed = le32_to_cpu(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 = le32_to_cpu(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 */
+ getnstimeofday(&ts);
+ wl->time_offset = (timespec_to_ns(&ts) >> 10) -
+ (s64)le32_to_cpu(status->fw_localtime);
+ }
+
+ 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 irqreturn_t wl1271_irq(int irq, void *cookie)
+ {
+ int ret;
+ u32 intr;
+ int loopcount = WL1271_IRQ_MAX_LOOPS;
+ struct wl1271 *wl = (struct wl1271 *)cookie;
+ bool done = false;
+ unsigned int defer_count;
+ unsigned long flags;
+
+ /* TX might be handled here, avoid redundant work */
+ set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
+ cancel_work_sync(&wl->tx_work);
+
+ /*
+ * In case edge triggered interrupt must be used, we cannot iterate
+ * more than once without introducing race conditions with the hardirq.
+ */
+ if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+ loopcount = 1;
+
+ mutex_lock(&wl->mutex);
+
+ wl1271_debug(DEBUG_IRQ, "IRQ work");
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ while (!done && loopcount--) {
+ /*
+ * In order to avoid a race with the hardirq, clear the flag
+ * before acknowledging the chip. Since the mutex is held,
+ * wl1271_ps_elp_wakeup cannot be called concurrently.
+ */
+ clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
+ smp_mb__after_clear_bit();
+
+ wl12xx_fw_status(wl, wl->fw_status);
+
+ wlcore_hw_tx_immediate_compl(wl);
+
+ intr = le32_to_cpu(wl->fw_status->intr);
+ intr &= WL1271_INTR_MASK;
+ if (!intr) {
+ done = true;
+ continue;
+ }
+
+ if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
+ wl1271_error("watchdog interrupt received! "
+ "starting recovery.");
+ wl12xx_queue_recovery_work(wl);
+
+ /* restarting the chip. ignore any other interrupt. */
+ goto out;
+ }
+
+ if (likely(intr & WL1271_ACX_INTR_DATA)) {
+ wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
+
+ wl12xx_rx(wl, wl->fw_status);
+
+ /* Check if any tx blocks were freed */
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
+ wl1271_tx_total_queue_count(wl) > 0) {
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+ /*
+ * In order to avoid starvation of the TX path,
+ * call the work function directly.
+ */
+ wl1271_tx_work_locked(wl);
+ } else {
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+ }
+
+ /* check for tx results */
+ wlcore_hw_tx_delayed_compl(wl);
+
+ /* 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");
+ wl1271_event_handle(wl, 0);
+ }
+
+ if (intr & WL1271_ACX_INTR_EVENT_B) {
+ wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
+ wl1271_event_handle(wl, 1);
+ }
+
+ 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");
+ }
+
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ /* In case TX was not handled here, queue TX work */
+ clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
+ if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
+ wl1271_tx_total_queue_count(wl) > 0)
+ ieee80211_queue_work(wl->hw, &wl->tx_work);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ mutex_unlock(&wl->mutex);
+
+ 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,
+ 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) {
+ 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;
+ }
+
+ static int wl1271_fetch_nvs(struct wl1271 *wl)
+ {
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, WL12XX_NVS_NAME, wl->dev);
+
+ if (ret < 0) {
+ wl1271_error("could not get nvs file %s: %d", WL12XX_NVS_NAME,
+ ret);
+ return ret;
+ }
+
+ wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
+
+ if (!wl->nvs) {
+ wl1271_error("could not allocate memory for the nvs file");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ wl->nvs_len = fw->size;
+
+ out:
+ release_firmware(fw);
+
+ return ret;
+ }
+
+ void wl12xx_queue_recovery_work(struct wl1271 *wl)
+ {
+ if (!test_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 = 0;
+
+ /* The FW log is a length-value list, find where the log end */
+ while (len < maxlen) {
+ if (memblock[len] == 0)
+ break;
+ if (len + memblock[len] + 1 > maxlen)
+ break;
+ len += memblock[len] + 1;
+ }
+
+ /* Make sure we have enough room */
+ len = min(len, (size_t)(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 addr;
+ u32 first_addr;
+ u8 *block;
+
+ if ((wl->quirks & WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED) ||
+ (wl->conf.fwlog.mode != WL12XX_FWLOG_ON_DEMAND) ||
+ (wl->conf.fwlog.mem_blocks == 0))
+ return;
+
+ wl1271_info("Reading FW panic log");
+
+ block = kmalloc(WL12XX_HW_BLOCK_SIZE, GFP_KERNEL);
+ if (!block)
+ return;
+
+ /*
+ * Make sure the chip is awake and the logger isn't active.
+ * This might fail if the firmware hanged.
+ */
+ if (!wl1271_ps_elp_wakeup(wl))
+ wl12xx_cmd_stop_fwlog(wl);
+
+ /* Read the first memory block address */
+ wl12xx_fw_status(wl, wl->fw_status);
+ first_addr = le32_to_cpu(wl->fw_status->log_start_addr);
+ if (!first_addr)
+ goto out;
+
+ /* Traverse the memory blocks linked list */
+ addr = first_addr;
+ do {
+ memset(block, 0, WL12XX_HW_BLOCK_SIZE);
+ wl1271_read_hwaddr(wl, addr, block, WL12XX_HW_BLOCK_SIZE,
+ false);
+
+ /*
+ * Memory blocks are linked to one another. The first 4 bytes
+ * of each memory block hold the hardware address of the next
+ * one. The last memory block points to the first one.
+ */
+ addr = le32_to_cpup((__le32 *)block);
+ if (!wl12xx_copy_fwlog(wl, block + sizeof(addr),
+ WL12XX_HW_BLOCK_SIZE - sizeof(addr)))
+ break;
+ } while (addr && (addr != first_addr));
+
+ wake_up_interruptible(&wl->fwlog_waitq);
+
+ out:
+ kfree(block);
+ }
+
+ 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;
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state != WL1271_STATE_ON || wl->plt)
+ goto out_unlock;
+
+ /* Avoid a recursive recovery */
+ set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
+
+ wl12xx_read_fwlog_panic(wl);
+
+ wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
+ wl->chip.fw_ver_str,
+ wlcore_read_reg(wl, REG_PC_ON_RECOVERY));
+
+ BUG_ON(bug_on_recovery &&
+ !test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags));
+
+ if (no_recovery) {
+ wl1271_info("No recovery (chosen on module load). Fw will remain stuck.");
+ clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
+ goto out_unlock;
+ }
+
+ BUG_ON(bug_on_recovery);
+
+ /*
+ * Advance security sequence number to overcome potential progress
+ * in the firmware during recovery. This doens't hurt if the network is
+ * not encrypted.
+ */
+ wl12xx_for_each_wlvif(wl, wlvif) {
+ if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
+ test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
+ wlvif->tx_security_seq +=
+ WL1271_TX_SQN_POST_RECOVERY_PADDING;
+ }
+
+ /* Prevent spurious TX during FW restart */
+ ieee80211_stop_queues(wl->hw);
+
+ if (wl->sched_scanning) {
+ ieee80211_sched_scan_stopped(wl->hw);
+ wl->sched_scanning = false;
+ }
+
+ /* 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);
+ __wl1271_op_remove_interface(wl, vif, false);
+ }
+ mutex_unlock(&wl->mutex);
+ wl1271_op_stop(wl->hw);
+
+ clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
+
+ ieee80211_restart_hw(wl->hw);
+
+ /*
+ * Its safe to enable TX now - the queues are stopped after a request
+ * to restart the HW.
+ */
+ ieee80211_wake_queues(wl->hw);
+ return;
+ out_unlock:
+ mutex_unlock(&wl->mutex);
+ }
+
+ static void wl1271_fw_wakeup(struct wl1271 *wl)
+ {
+ wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
+ }
+
+ static int wl1271_setup(struct wl1271 *wl)
+ {
+ wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
+ if (!wl->fw_status)
+ return -ENOMEM;
+
+ wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
+ if (!wl->tx_res_if) {
+ kfree(wl->fw_status);
+ return -ENOMEM;
+ }
+
+ return 0;
+ }
+
+ 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);
+
+ wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
+
+ /* ELP module wake up */
+ wl1271_fw_wakeup(wl);
+
+ out:
+ 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.
+ */
+ if (wl1271_set_block_size(wl))
+ wl->quirks |= WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN;
+
+ ret = wl->ops->identify_chip(wl);
+ if (ret < 0)
+ goto out;
+
+ /* 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)
+ goto out;
+
+ /* No NVS from netlink, try to get it from the filesystem */
+ if (wl->nvs == NULL) {
+ ret = wl1271_fetch_nvs(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+ out:
+ return ret;
+ }
+
+ int wl1271_plt_start(struct wl1271 *wl)
+ {
+ int retries = WL1271_BOOT_RETRIES;
+ struct wiphy *wiphy = wl->hw->wiphy;
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ wl1271_notice("power up");
+
+ if (wl->state != WL1271_STATE_OFF) {
+ wl1271_error("cannot go into PLT state because not "
+ "in off state: %d", wl->state);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ while (retries) {
+ retries--;
+ ret = wl12xx_chip_wakeup(wl, true);
+ if (ret < 0)
+ goto power_off;
+
+ ret = wl->ops->boot(wl);
+ if (ret < 0)
+ goto power_off;
+
+ ret = wl1271_plt_init(wl);
+ if (ret < 0)
+ goto irq_disable;
+
+ wl->plt = true;
+ wl->state = WL1271_STATE_ON;
+ wl1271_notice("firmware booted in PLT mode (%s)",
+ wl->chip.fw_ver_str);
+
+ /* update hw/fw version info in wiphy struct */
+ wiphy->hw_version = wl->chip.id;
+ strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
+ sizeof(wiphy->fw_version));
+
+ goto out;
+
+ 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 WL1271_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);
+ }
+
+ 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->elp_work);
+ cancel_delayed_work_sync(&wl->tx_watchdog_work);
+
+ mutex_lock(&wl->mutex);
+ wl1271_power_off(wl);
+ wl->flags = 0;
+ wl->state = WL1271_STATE_OFF;
+ wl->plt = false;
+ wl->rx_counter = 0;
+ mutex_unlock(&wl->mutex);
+
+ out:
+ return ret;
+ }
+
+ static void wl1271_op_tx(struct ieee80211_hw *hw, 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)
+ 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);
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+
+ /* queue the packet */
+ if (hlid == WL12XX_INVALID_LINK_ID ||
+ (wlvif && !test_bit(hlid, wlvif->links_map))) {
+ 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]++;
+
+ /*
+ * The workqueue is slow to process the tx_queue and we need stop
+ * the queue here, otherwise the queue will get too long.
+ */
+ if (wl->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
+ wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
+ ieee80211_stop_queue(wl->hw, mapping);
+ set_bit(q, &wl->stopped_queues_map);
+ }
+
+ /*
+ * 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))
+ wl1271_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 = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
+ memset(hdr, 0, sizeof(*hdr));
+ hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
+ IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS);
+
+ memset(skb_put(skb, dummy_packet_size), 0, 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;
+ }
+
+
+ #ifdef CONFIG_PM
+ static int wl1271_configure_suspend_sta(struct wl1271 *wl,
+ struct wl12xx_vif *wlvif)
+ {
+ int ret = 0;
+
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ 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);
+
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ return ret;
+
+ }
+
+ static int wl1271_configure_suspend_ap(struct wl1271 *wl,
+ struct wl12xx_vif *wlvif)
+ {
+ int ret = 0;
+
+ if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true);
+
+ wl1271_ps_elp_sleep(wl);
+ out:
+ return ret;
+
+ }
+
+ static int wl1271_configure_suspend(struct wl1271 *wl,
+ struct wl12xx_vif *wlvif)
+ {
+ if (wlvif->bss_type == BSS_TYPE_STA_BSS)
+ return wl1271_configure_suspend_sta(wl, wlvif);
+ if (wlvif->bss_type == BSS_TYPE_AP_BSS)
+ return wl1271_configure_suspend_ap(wl, wlvif);
+ 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;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ return;
+
+ if (is_sta) {
+ 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);
+ }
+
+ wl1271_ps_elp_sleep(wl);
+ }
+
+ static int wl1271_op_suspend(struct ieee80211_hw *hw,
+ struct cfg80211_wowlan *wow)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif;
+ int ret;
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
+ WARN_ON(!wow || !wow->any);
+
+ wl1271_tx_flush(wl);
+
+ mutex_lock(&wl->mutex);
+ wl->wow_enabled = true;
+ wl12xx_for_each_wlvif(wl, wlvif) {
+ ret = wl1271_configure_suspend(wl, wlvif);
+ if (ret < 0) {
+ wl1271_warning("couldn't prepare device to suspend");
+ return ret;
+ }
+ }
+ mutex_unlock(&wl->mutex);
+ /* flush any remaining work */
+ wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
+
+ /*
+ * disable and re-enable interrupts in order to flush
+ * the threaded_irq
+ */
+ wlcore_disable_interrupts(wl);
+
+ /*
+ * set suspended flag to avoid triggering a new threaded_irq
+ * work. no need for spinlock as interrupts are disabled.
+ */
+ set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
+
+ wlcore_enable_interrupts(wl);
+ flush_work(&wl->tx_work);
+ flush_delayed_work(&wl->elp_work);
+
+ return 0;
+ }
+
+ static int wl1271_op_resume(struct ieee80211_hw *hw)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif;
+ unsigned long flags;
+ bool run_irq_work = false;
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
+ wl->wow_enabled);
+ WARN_ON(!wl->wow_enabled);
+
+ /*
+ * 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);
+
+ if (run_irq_work) {
+ wl1271_debug(DEBUG_MAC80211,
+ "run postponed irq_work directly");
+ wl1271_irq(0, wl);
+ wlcore_enable_interrupts(wl);
+ }
+
+ mutex_lock(&wl->mutex);
+ wl12xx_for_each_wlvif(wl, wlvif) {
+ wl1271_configure_resume(wl, wlvif);
+ }
+ wl->wow_enabled = false;
+ mutex_unlock(&wl->mutex);
+
+ return 0;
+ }
+ #endif
+
+ 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 wl1271_op_stop(struct ieee80211_hw *hw)
+ {
+ struct wl1271 *wl = hw->priv;
+ int i;
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
+
+ /*
+ * 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->state == WL1271_STATE_OFF) {
+ 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);
+ return;
+ }
+
+ /*
+ * this must be before the cancel_work calls below, so that the work
+ * functions don't perform further work.
+ */
+ wl->state = WL1271_STATE_OFF;
+ mutex_unlock(&wl->mutex);
+
+ 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->elp_work);
+ cancel_delayed_work_sync(&wl->tx_watchdog_work);
+
+ /* let's notify MAC80211 about the remaining pending TX frames */
+ wl12xx_tx_reset(wl, true);
+ mutex_lock(&wl->mutex);
+
+ wl1271_power_off(wl);
+
+ wl->band = IEEE80211_BAND_2GHZ;
+
+ wl->rx_counter = 0;
+ wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
+ 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->sched_scanning = false;
+ 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));
+ wl->active_sta_count = 0;
+
+ /* The system link is always allocated */
+ __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->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;
+
+ 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 u8 wl12xx_get_role_type(struct wl1271 *wl, struct wl12xx_vif *wlvif)
+ {
+ switch (wlvif->bss_type) {
+ case BSS_TYPE_AP_BSS:
+ if (wlvif->p2p)
+ return WL1271_ROLE_P2P_GO;
+ 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;
+ /* fall-through */
+ case NL80211_IFTYPE_STATION:
+ 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;
+ /* fall-through */
+ case NL80211_IFTYPE_AP:
+ 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);
+ } 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->bitrate_masks[IEEE80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
+ wlvif->bitrate_masks[IEEE80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
+ 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;
+ 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;
+
+ 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_LIST_HEAD(&wlvif->list);
+
+ setup_timer(&wlvif->rx_streaming_timer, wl1271_rx_streaming_timer,
+ (unsigned long) wlvif);
+ return 0;
+ }
+
+ static bool 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 WL1271_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;
+ strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
+ sizeof(wiphy->fw_version));
+
+ /*
+ * Now we know if 11a is supported (info from the NVS), so disable
+ * 11a channels if not supported
+ */
+ if (!wl->enable_11a)
+ wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
+
+ wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
+ wl->enable_11a ? "" : "not ");
+
+ wl->state = WL1271_STATE_ON;
+ out:
+ return booted;
+ }
+
+ 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 == WL1271_STATE_OFF)
+ 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);
+ }
+ }
+
+ 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;
+ bool booted = false;
+
+ vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
+ 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);
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out_unlock;
+
+ /*
+ * 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;
+ }
+
+
+ ret = wl12xx_init_vif_data(wl, vif);
+ if (ret < 0)
+ goto out;
+
+ wlvif->wl = wl;
+ role_type = wl12xx_get_role_type(wl, wlvif);
+ if (role_type == WL12XX_INVALID_ROLE_TYPE) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ 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;
+ }
+
+ /*
+ * TODO: after the nvs issue will be solved, move this block
+ * to start(), and make sure here the driver is ON.
+ */
+ if (wl->state == WL1271_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);
+
+ booted = wl12xx_init_fw(wl);
+ if (!booted) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
+ wlvif->bss_type == BSS_TYPE_IBSS) {
+ /*
+ * The device role is a special role used for
+ * rx and tx frames prior to association (as
+ * the STA role can get packets only from
+ * its associated bssid)
+ */
+ ret = wl12xx_cmd_role_enable(wl, vif->addr,
+ WL1271_ROLE_DEVICE,
+ &wlvif->dev_role_id);
+ if (ret < 0)
+ goto out;
+ }
+
+ 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;
+
+ 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:
+ wl1271_ps_elp_sleep(wl);
+ 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;
+
+ 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 != WL1271_STATE_ON)
+ return;
+
+ wl1271_info("down");
+
+ if (wl->scan.state != WL1271_SCAN_STATE_IDLE &&
+ wl->scan_vif == vif) {
+ /*
+ * 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_vif = NULL;
+ wl->scan.req = NULL;
+ ieee80211_scan_completed(wl->hw, true);
+ }
+
+ if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
+ /* disable active roles */
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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);
+
+ ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
+ if (ret < 0)
+ goto deinit;
+ }
+
+ ret = wl12xx_cmd_role_disable(wl, &wlvif->role_id);
+ if (ret < 0)
+ goto deinit;
+
+ wl1271_ps_elp_sleep(wl);
+ }
+ deinit:
+ /* 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);
+ } 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;
+ wl12xx_tx_reset_wlvif(wl, wlvif);
+ 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 (wlvif->bss_type == BSS_TYPE_AP_BSS)
+ wl->ap_count--;
+ else
+ wl->sta_count--;
+
+ mutex_unlock(&wl->mutex);
+
+ del_timer_sync(&wlvif->rx_streaming_timer);
+ cancel_work_sync(&wlvif->rx_streaming_enable_work);
+ cancel_work_sync(&wlvif->rx_streaming_disable_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;
+ bool cancel_recovery = true;
+
+ wl12xx_get_vif_count(hw, vif, &vif_count);
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL1271_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);
+ cancel_recovery = false;
+ }
+ out:
+ mutex_unlock(&wl->mutex);
+ if (cancel_recovery)
+ cancel_work_sync(&wl->recovery_work);
+ }
+
+ 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 wl1271_join(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+ bool set_assoc)
+ {
+ 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 (set_assoc)
+ set_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags);
+
+ if (is_ibss)
+ ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
+ else
+ ret = wl12xx_cmd_role_start_sta(wl, wlvif);
+ if (ret < 0)
+ goto out;
+
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
+ goto out;
+
+ /*
+ * 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)
+ goto out;
+
+ ret = wl1271_acx_aid(wl, wlvif, wlvif->aid);
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_cmd_build_klv_null_data(wl, wlvif);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1271_acx_keep_alive_config(wl, wlvif,
+ CMD_TEMPL_KLV_IDX_NULL_DATA,
+ ACX_KEEP_ALIVE_TPL_VALID);
+ if (ret < 0)
+ goto out;
+
+ out:
+ return ret;
+ }
+
+ static int wl1271_unjoin(struct wl1271 *wl, struct wl12xx_vif *wlvif)
+ {
+ int 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);
+ ieee80211_chswitch_done(vif, false);
+ }
+
+ /* to stop listening to a channel, we disconnect */
+ ret = wl12xx_cmd_role_stop_sta(wl, wlvif);
+ if (ret < 0)
+ goto out;
+
+ /* reset TX security counters on a clean disconnect */
+ wlvif->tx_security_last_seq_lsb = 0;
+ wlvif->tx_security_seq = 0;
+
+ out:
+ return ret;
+ }
+
+ 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 int wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+ bool idle)
+ {
+ int ret;
+ bool cur_idle = !test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
+
+ if (idle == cur_idle)
+ return 0;
+
+ if (idle) {
+ /* no need to croc if we weren't busy (e.g. during boot) */
+ if (wl12xx_dev_role_started(wlvif)) {
+ ret = wl12xx_stop_dev(wl, wlvif);
+ if (ret < 0)
+ goto out;
+ }
+ wlvif->rate_set =
+ wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
+ ret = wl1271_acx_sta_rate_policies(wl, wlvif);
+ if (ret < 0)
+ goto out;
+ ret = wl1271_acx_keep_alive_config(
+ wl, wlvif, CMD_TEMPL_KLV_IDX_NULL_DATA,
+ ACX_KEEP_ALIVE_TPL_INVALID);
+ if (ret < 0)
+ goto out;
+ clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
+ } else {
+ /* The current firmware only supports sched_scan in idle */
+ if (wl->sched_scanning) {
+ wl1271_scan_sched_scan_stop(wl);
+ ieee80211_sched_scan_stopped(wl->hw);
+ }
+
+ ret = wl12xx_start_dev(wl, wlvif);
+ if (ret < 0)
+ goto out;
+ set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
+ }
+
+ out:
+ return ret;
+ }
+
+ static int wl12xx_config_vif(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+ struct ieee80211_conf *conf, u32 changed)
+ {
+ bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
+ int channel, ret;
+
+ channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+
+ /* if the channel changes while joined, join again */
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
+ ((wlvif->band != conf->channel->band) ||
+ (wlvif->channel != channel))) {
+ /* send all pending packets */
+ wl1271_tx_work_locked(wl);
+ wlvif->band = conf->channel->band;
+ wlvif->channel = channel;
+
+ if (!is_ap) {
+ /*
+ * FIXME: the mac80211 should really provide a fixed
+ * rate to use here. for now, just use the smallest
+ * possible rate for the band as a fixed rate for
+ * association frames and other control messages.
+ */
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
+ 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)
+ wl1271_warning("rate policy for channel "
+ "failed %d", ret);
+
+ /*
+ * change the ROC channel. do it only if we are
+ * not idle. otherwise, CROC will be called
+ * anyway.
+ */
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED,
+ &wlvif->flags) &&
+ wl12xx_dev_role_started(wlvif) &&
+ !(conf->flags & IEEE80211_CONF_IDLE)) {
+ ret = wl12xx_stop_dev(wl, wlvif);
+ if (ret < 0)
+ return ret;
+
+ ret = wl12xx_start_dev(wl, wlvif);
+ if (ret < 0)
+ return ret;
+ }
+ }
+ }
+
+ if ((changed & IEEE80211_CONF_CHANGE_PS) && !is_ap) {
+
+ if ((conf->flags & IEEE80211_CONF_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 (!(conf->flags & IEEE80211_CONF_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);
+ }
+ }
+
+ 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, u32 changed)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif;
+ struct ieee80211_conf *conf = &hw->conf;
+ int channel, ret = 0;
+
+ channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
+ " changed 0x%x",
+ channel,
+ conf->flags & IEEE80211_CONF_PS ? "on" : "off",
+ conf->power_level,
+ conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
+ changed);
+
+ /*
+ * mac80211 will go to idle nearly immediately after transmitting some
+ * frames, such as the deauth. To make sure those frames reach the air,
+ * wait here until the TX queue is fully flushed.
+ */
+ if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
+ (conf->flags & IEEE80211_CONF_IDLE))
+ wl1271_tx_flush(wl);
+
+ mutex_lock(&wl->mutex);
+
+ /* we support configuring the channel and band even while off */
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ wl->band = conf->channel->band;
+ wl->channel = channel;
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_POWER)
+ wl->power_level = conf->power_level;
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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:
+ wl1271_ps_elp_sleep(wl);
+
+ 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;
+ struct wl1271 *wl = hw->priv;
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ return 0;
+
+ 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_PROMISC_IN_BSS | \
+ 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 == WL1271_STATE_OFF))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl12xx_for_each_wlvif(wl, wlvif) {
+ 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;
+ }
+ }
+
+ /*
+ * 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:
+ wl1271_ps_elp_sleep(wl);
+
+ 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)
+ {
+ 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;
+
+ 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);
+ 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)
+ {
+ int ret;
+ bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
+
+ /*
+ * A role set to GEM cipher requires different Tx settings (namely
+ * spare blocks). Note when we are in this mode so the HW can adjust.
+ */
+ if (key_type == KEY_GEM) {
+ if (action == KEY_ADD_OR_REPLACE)
+ wlvif->is_gem = true;
+ else if (action == KEY_REMOVE)
+ wlvif->is_gem = false;
+ }
+
+ 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);
+ } else {
+ ret = wl1271_cmd_set_ap_key(wl, wlvif, action,
+ id, key_type, key_size,
+ key, hlid, tx_seq_32,
+ tx_seq_16);
+ }
+
+ if (ret < 0)
+ return ret;
+ } else {
+ const u8 *addr;
+ static const u8 bcast_addr[ETH_ALEN] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ };
+
+ 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;
+
+ /* the default WEP key needs to be configured at least once */
+ if (key_type == KEY_WEP) {
+ ret = wl12xx_cmd_set_default_wep_key(wl,
+ wlvif->default_key,
+ wlvif->sta.hlid);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ return 0;
+ }
+
+ static int wl1271_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;
+ struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
+ int ret;
+ u32 tx_seq_32 = 0;
+ u16 tx_seq_16 = 0;
+ u8 key_type;
+
+ 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);
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF)) {
+ ret = -EAGAIN;
+ goto out_unlock;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out_unlock;
+
+ 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;
+ tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
+ tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ key_type = KEY_AES;
+
+ key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
+ tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
+ tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
+ break;
+ case WL1271_CIPHER_SUITE_GEM:
+ key_type = KEY_GEM;
+ tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
+ tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
+ break;
+ default:
+ wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
+
+ ret = -EOPNOTSUPP;
+ goto out_sleep;
+ }
+
+ 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);
+ if (ret < 0) {
+ wl1271_error("Could not add or replace key");
+ goto out_sleep;
+ }
+
+ /*
+ * 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);
+ goto out_sleep;
+ }
+ }
+ 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);
+ if (ret < 0) {
+ wl1271_error("Could not remove key");
+ goto out_sleep;
+ }
+ break;
+
+ default:
+ wl1271_error("Unsupported key cmd 0x%x", cmd);
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+
+ out_unlock:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+ }
+
+ static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_scan_request *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 (wl->state == WL1271_STATE_OFF) {
+ /*
+ * 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 = wl1271_ps_elp_wakeup(wl);
+ 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 = wl1271_scan(hw->priv, vif, ssid, len, req);
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+ 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;
+ int ret;
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan");
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL1271_STATE_OFF)
+ goto out;
+
+ if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
+ ret = wl1271_scan_stop(wl);
+ 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_vif = NULL;
+ wl->scan.req = NULL;
+ ieee80211_scan_completed(wl->hw, true);
+
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+ 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_sched_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 (wl->state == WL1271_STATE_OFF) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1271_scan_sched_scan_config(wl, wlvif, req, ies);
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1271_scan_sched_scan_start(wl, wlvif);
+ if (ret < 0)
+ goto out_sleep;
+
+ wl->sched_scanning = true;
+
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+ out:
+ mutex_unlock(&wl->mutex);
+ return ret;
+ }
+
+ static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+ {
+ struct wl1271 *wl = hw->priv;
+ int ret;
+
+ wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL1271_STATE_OFF)
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl1271_scan_sched_scan_stop(wl);
+
+ wl1271_ps_elp_sleep(wl);
+ out:
+ mutex_unlock(&wl->mutex);
+ }
+
+ static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
+ {
+ struct wl1271 *wl = hw->priv;
+ int ret = 0;
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF)) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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);
+
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+ }
+
+ static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif;
+ int ret = 0;
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF)) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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);
+ }
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+ }
+
+ static int wl1271_ssid_set(struct ieee80211_vif *vif, struct sk_buff *skb,
+ int offset)
+ {
+ struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
+ 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 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);
+ 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);
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+ 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 + bss_conf->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] = bss_conf->ssid_len;
+ memcpy(probe_rsp_templ + ssid_ie_offset + 2,
+ bss_conf->ssid, bss_conf->ssid_len);
+ templ_len = ssid_ie_offset + 2 + bss_conf->ssid_len;
+
+ memcpy(probe_rsp_templ + ssid_ie_offset + 2 + bss_conf->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 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);
+ if (!wl1271_ap_set_probe_resp_tmpl(wl, rate, vif)) {
+ wl1271_debug(DEBUG_AP, "probe response updated");
+ set_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags);
+ }
+ }
+
+ if ((changed & BSS_CHANGED_BEACON)) {
+ struct ieee80211_hdr *hdr;
+ u32 min_rate;
+ int ieoffset = offsetof(struct ieee80211_mgmt,
+ u.beacon.variable);
+ struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
+ u16 tmpl_id;
+
+ if (!beacon) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ wl1271_debug(DEBUG_MASTER, "beacon updated");
+
+ ret = wl1271_ssid_set(vif, 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;
+ }
+
+ /*
+ * 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:
+ 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;
+ }
+
+ 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)) {
+ 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->channel_type != NL80211_CHAN_NO_HT)) {
+ 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;
+ }
+
+ /* 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, set_assoc = 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 (bss_conf->ibss_joined) {
+ set_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags);
+ ibss_joined = true;
+ } else {
+ if (test_and_clear_bit(WLVIF_FLAG_IBSS_JOINED,
+ &wlvif->flags))
+ wl1271_unjoin(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) {
+ ret = wl1271_sta_handle_idle(wl, wlvif, bss_conf->idle);
+ if (ret < 0)
+ wl1271_warning("idle mode change failed %d", ret);
+ }
+
+ 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)
+ if (!is_zero_ether_addr(bss_conf->bssid)) {
+ ret = wl12xx_cmd_build_null_data(wl, wlvif);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1271_build_qos_null_data(wl, vif);
+ if (ret < 0)
+ goto out;
+ }
+
+ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) {
+ rcu_read_lock();
+ sta = ieee80211_find_sta(vif, bss_conf->bssid);
+ if (!sta)
+ goto sta_not_found;
+
+ /* save the supp_rates of the ap */
+ sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
+ if (sta->ht_cap.ht_supported)
+ sta_rate_set |=
+ (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
+ sta_ht_cap = sta->ht_cap;
+ sta_exists = true;
+
+ sta_not_found:
+ rcu_read_unlock();
+ }
+
+ if ((changed & BSS_CHANGED_ASSOC)) {
+ if (bss_conf->assoc) {
+ u32 rates;
+ int ieoffset;
+ wlvif->aid = bss_conf->aid;
+ wlvif->beacon_int = bss_conf->beacon_int;
+ do_join = true;
+ set_assoc = true;
+
+ /*
+ * use basic rates from AP, and determine lowest rate
+ * to use with control frames.
+ */
+ 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);
+ ret = wl1271_acx_sta_rate_policies(wl, wlvif);
+ if (ret < 0)
+ goto out;
+
+ /*
+ * 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)
+ goto out;
+
+ /*
+ * 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(vif, wlvif->probereq, ieoffset);
+
+ /* enable the connection monitoring feature */
+ ret = wl1271_acx_conn_monit_params(wl, wlvif, true);
+ if (ret < 0)
+ goto out;
+ } else {
+ /* use defaults when not associated */
+ bool was_assoc =
+ !!test_and_clear_bit(WLVIF_FLAG_STA_ASSOCIATED,
+ &wlvif->flags);
+ bool was_ifup =
+ !!test_and_clear_bit(WLVIF_FLAG_STA_STATE_SENT,
+ &wlvif->flags);
+ wlvif->aid = 0;
+
+ /* free probe-request template */
+ dev_kfree_skb(wlvif->probereq);
+ wlvif->probereq = NULL;
+
+ /* 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)
+ goto out;
+
+ /* disable connection monitor features */
+ ret = wl1271_acx_conn_monit_params(wl, wlvif, false);
+
+ /* Disable the keep-alive feature */
+ ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
+ if (ret < 0)
+ goto out;
+
+ /* restore the bssid filter and go to dummy bssid */
+ if (was_assoc) {
+ /*
+ * we might have to disable roc, if there was
+ * no IF_OPER_UP notification.
+ */
+ if (!was_ifup) {
+ ret = wl12xx_croc(wl, wlvif->role_id);
+ if (ret < 0)
+ goto out;
+ }
+ /*
+ * (we also need to disable roc in case of
+ * roaming on the same channel. until we will
+ * have a better flow...)
+ */
+ if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
+ ret = wl12xx_croc(wl,
+ wlvif->dev_role_id);
+ if (ret < 0)
+ goto out;
+ }
+
+ wl1271_unjoin(wl, wlvif);
+ if (!bss_conf->idle)
+ wl12xx_start_dev(wl, wlvif);
+ }
+ }
+ }
+
+ if (changed & BSS_CHANGED_IBSS) {
+ wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
+ bss_conf->ibss_joined);
+
+ if (bss_conf->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;
+ }
+ }
+
+ ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
+ if (ret < 0)
+ goto out;
+
+ if (do_join) {
+ ret = wl1271_join(wl, wlvif, set_assoc);
+ if (ret < 0) {
+ wl1271_warning("cmd join failed %d", ret);
+ goto out;
+ }
+
+ /* ROC until connected (after EAPOL exchange) */
+ if (!is_ibss) {
+ ret = wl12xx_roc(wl, wlvif, wlvif->role_id);
+ if (ret < 0)
+ goto out;
+
+ if (test_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags))
+ wl12xx_set_authorized(wl, wlvif);
+ }
+ /*
+ * stop device role if started (we might already be in
+ * STA/IBSS role).
+ */
+ if (wl12xx_dev_role_started(wlvif)) {
+ ret = wl12xx_stop_dev(wl, wlvif);
+ if (ret < 0)
+ goto out;
+ }
+ }
+
+ /* Handle new association with HT. Do this after join. */
+ if (sta_exists) {
+ if ((changed & BSS_CHANGED_HT) &&
+ (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
+ ret = wl1271_acx_set_ht_capabilities(wl,
+ &sta_ht_cap,
+ true,
+ wlvif->sta.hlid);
+ if (ret < 0) {
+ wl1271_warning("Set ht cap true failed %d",
+ ret);
+ goto out;
+ }
+ }
+ /* handle new association without HT and disassociation */
+ else if (changed & BSS_CHANGED_ASSOC) {
+ ret = wl1271_acx_set_ht_capabilities(wl,
+ &sta_ht_cap,
+ false,
+ wlvif->sta.hlid);
+ if (ret < 0) {
+ wl1271_warning("Set ht cap false failed %d",
+ ret);
+ goto out;
+ }
+ }
+ }
+
+ /* Handle HT information change. Done after join. */
+ if ((changed & BSS_CHANGED_HT) &&
+ (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
+ 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 = bss_conf->arp_addr_list[0];
+ wlvif->sta.qos = bss_conf->qos;
+ WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS);
+
+ if (bss_conf->arp_addr_cnt == 1 &&
+ bss_conf->arp_filter_enabled) {
+ 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,
+ u32 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 changed 0x%x",
+ (int)changed);
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ goto out;
+
+ if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ if (is_ap)
+ wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
+ else
+ wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
+
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+ }
+
+ static int wl1271_op_conf_tx(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, 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;
+
+ 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 = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ /*
+ * the txop is confed in units of 32us 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:
+ wl1271_ps_elp_sleep(wl);
+
+ 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 == WL1271_STATE_OFF))
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_acx_tsf_info(wl, wlvif, &mactime);
+ if (ret < 0)
+ goto out_sleep;
+
+ out_sleep:
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+ return mactime;
+ }
+
+ static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+
+ if (idx != 0)
+ return -ENOENT;
+
+ survey->channel = conf->channel;
+ survey->filled = SURVEY_INFO_NOISE_DBM;
+ survey->noise = wl->noise;
+
+ 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 >= AP_MAX_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;
+ }
+
+ 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);
+ memset(wl->links[hlid].addr, 0, ETH_ALEN);
+ wl->links[hlid].ba_bitmap = 0;
+ __clear_bit(hlid, &wl->ap_ps_map);
+ __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
+ 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, wl_sta->hlid);
+ if (ret < 0)
+ return ret;
+
+ wl1271_free_sta(wl, wlvif, wl_sta->hlid);
+ return ret;
+ }
+
+ 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;
+ u8 hlid;
+ 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;
+ hlid = wl_sta->hlid;
+
+ /* Add station (AP mode) */
+ if (is_ap &&
+ old_state == IEEE80211_STA_NOTEXIST &&
+ new_state == IEEE80211_STA_NONE)
+ return wl12xx_sta_add(wl, wlvif, sta);
+
+ /* Remove station (AP mode) */
+ if (is_ap &&
+ old_state == IEEE80211_STA_NONE &&
+ new_state == IEEE80211_STA_NOTEXIST) {
+ /* must not fail */
+ wl12xx_sta_remove(wl, wlvif, sta);
+ return 0;
+ }
+
+ /* Authorize station (AP mode) */
+ if (is_ap &&
+ new_state == IEEE80211_STA_AUTHORIZED) {
+ ret = wl12xx_cmd_set_peer_state(wl, hlid);
+ if (ret < 0)
+ return ret;
+
+ ret = wl1271_acx_set_ht_capabilities(wl, &sta->ht_cap, true,
+ hlid);
+ return ret;
+ }
+
+ /* Authorize station */
+ if (is_sta &&
+ new_state == IEEE80211_STA_AUTHORIZED) {
+ set_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
+ return wl12xx_set_authorized(wl, wlvif);
+ }
+
+ if (is_sta &&
+ old_state == IEEE80211_STA_AUTHORIZED &&
+ new_state == IEEE80211_STA_ASSOC) {
+ clear_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
+ return 0;
+ }
+
+ 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 == WL1271_STATE_OFF)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_update_sta_state(wl, wlvif, sta, old_state, new_state);
+
+ wl1271_ps_elp_sleep(wl);
+ 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,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn,
+ u8 buf_size)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
+ int ret;
+ u8 hlid, *ba_bitmap;
+
+ 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 > 0xFF))
+ return -ENOTSUPP;
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF)) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
+ hlid = wlvif->sta.hlid;
+ ba_bitmap = &wlvif->sta.ba_rx_bitmap;
+ } 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;
+ ba_bitmap = &wl->links[hlid].ba_bitmap;
+ } else {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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 >= RX_BA_MAX_SESSIONS) {
+ ret = -EBUSY;
+ wl1271_error("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);
+ if (!ret) {
+ *ba_bitmap |= BIT(tid);
+ wl->ba_rx_session_count++;
+ }
+ break;
+
+ case IEEE80211_AMPDU_RX_STOP:
+ if (!(*ba_bitmap & BIT(tid))) {
+ ret = -EINVAL;
+ wl1271_error("no active RX BA session on tid: %d",
+ tid);
+ break;
+ }
+
+ ret = wl12xx_acx_set_ba_receiver_session(wl, tid, 0, false,
+ hlid);
+ 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:
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ ret = -EINVAL;
+ break;
+
+ default:
+ wl1271_error("Incorrect ampdu action id=%x\n", action);
+ ret = -EINVAL;
+ }
+
+ wl1271_ps_elp_sleep(wl);
+
+ 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 < IEEE80211_NUM_BANDS; i++)
+ wlvif->bitrate_masks[i] =
+ wl1271_tx_enabled_rates_get(wl,
+ mask->control[i].legacy,
+ i);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF))
+ goto out;
+
+ if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
+ !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ 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);
+
+ wl1271_ps_elp_sleep(wl);
+ }
+ out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+ }
+
+ static void wl12xx_op_channel_switch(struct ieee80211_hw *hw,
+ struct ieee80211_channel_switch *ch_switch)
+ {
+ struct wl1271 *wl = hw->priv;
+ struct wl12xx_vif *wlvif;
+ int ret;
+
+ wl1271_debug(DEBUG_MAC80211, "mac80211 channel switch");
+
+ wl1271_tx_flush(wl);
+
+ mutex_lock(&wl->mutex);
+
+ if (unlikely(wl->state == WL1271_STATE_OFF)) {
+ wl12xx_for_each_wlvif_sta(wl, wlvif) {
+ struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
+ ieee80211_chswitch_done(vif, false);
+ }
+ goto out;
+ }
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ /* TODO: change mac80211 to pass vif as param */
+ wl12xx_for_each_wlvif_sta(wl, wlvif) {
+ ret = wl12xx_cmd_channel_switch(wl, wlvif, ch_switch);
+
+ if (!ret)
+ set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
+ }
+
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+ }
+
+ 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 == WL1271_STATE_OFF))
+ 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 = 25 },
+ { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
+ { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
+ { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
+ { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
+ { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
+ { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
+ { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
+ { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
+ { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
+ { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
+ { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
+ { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
+ { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
+ };
+
+ /* 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 = 7, .center_freq = 5035, .max_power = 25 },
+ { .hw_value = 8, .center_freq = 5040, .max_power = 25 },
+ { .hw_value = 9, .center_freq = 5045, .max_power = 25 },
+ { .hw_value = 11, .center_freq = 5055, .max_power = 25 },
+ { .hw_value = 12, .center_freq = 5060, .max_power = 25 },
+ { .hw_value = 16, .center_freq = 5080, .max_power = 25 },
+ { .hw_value = 34, .center_freq = 5170, .max_power = 25 },
+ { .hw_value = 36, .center_freq = 5180, .max_power = 25 },
+ { .hw_value = 38, .center_freq = 5190, .max_power = 25 },
+ { .hw_value = 40, .center_freq = 5200, .max_power = 25 },
+ { .hw_value = 42, .center_freq = 5210, .max_power = 25 },
+ { .hw_value = 44, .center_freq = 5220, .max_power = 25 },
+ { .hw_value = 46, .center_freq = 5230, .max_power = 25 },
+ { .hw_value = 48, .center_freq = 5240, .max_power = 25 },
+ { .hw_value = 52, .center_freq = 5260, .max_power = 25 },
+ { .hw_value = 56, .center_freq = 5280, .max_power = 25 },
+ { .hw_value = 60, .center_freq = 5300, .max_power = 25 },
+ { .hw_value = 64, .center_freq = 5320, .max_power = 25 },
+ { .hw_value = 100, .center_freq = 5500, .max_power = 25 },
+ { .hw_value = 104, .center_freq = 5520, .max_power = 25 },
+ { .hw_value = 108, .center_freq = 5540, .max_power = 25 },
+ { .hw_value = 112, .center_freq = 5560, .max_power = 25 },
+ { .hw_value = 116, .center_freq = 5580, .max_power = 25 },
+ { .hw_value = 120, .center_freq = 5600, .max_power = 25 },
+ { .hw_value = 124, .center_freq = 5620, .max_power = 25 },
+ { .hw_value = 128, .center_freq = 5640, .max_power = 25 },
+ { .hw_value = 132, .center_freq = 5660, .max_power = 25 },
+ { .hw_value = 136, .center_freq = 5680, .max_power = 25 },
+ { .hw_value = 140, .center_freq = 5700, .max_power = 25 },
+ { .hw_value = 149, .center_freq = 5745, .max_power = 25 },
+ { .hw_value = 153, .center_freq = 5765, .max_power = 25 },
+ { .hw_value = 157, .center_freq = 5785, .max_power = 25 },
+ { .hw_value = 161, .center_freq = 5805, .max_power = 25 },
+ { .hw_value = 165, .center_freq = 5825, .max_power = 25 },
+ };
+
+ 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 = wl1271_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,
+ .set_key = wl1271_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,
+ .channel_switch = wl12xx_op_channel_switch,
+ CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
+ };
+
+
+ u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum ieee80211_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 ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+ {
+ struct wl1271 *wl = dev_get_drvdata(dev);
+ ssize_t len;
+
+ len = PAGE_SIZE;
+
+ mutex_lock(&wl->mutex);
+ len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
+ wl->sg_enabled);
+ mutex_unlock(&wl->mutex);
+
+ return len;
+
+ }
+
+ static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+ {
+ struct wl1271 *wl = dev_get_drvdata(dev);
+ unsigned long res;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &res);
+ if (ret < 0) {
+ wl1271_warning("incorrect value written to bt_coex_mode");
+ return count;
+ }
+
+ mutex_lock(&wl->mutex);
+
+ res = !!res;
+
+ if (res == wl->sg_enabled)
+ goto out;
+
+ wl->sg_enabled = res;
+
+ if (wl->state == WL1271_STATE_OFF)
+ goto out;
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl1271_acx_sg_enable(wl, wl->sg_enabled);
+ wl1271_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+ return count;
+ }
+
+ static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
+ wl1271_sysfs_show_bt_coex_state,
+ wl1271_sysfs_store_bt_coex_state);
+
+ static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+ {
+ struct wl1271 *wl = dev_get_drvdata(dev);
+ ssize_t len;
+
+ len = PAGE_SIZE;
+
+ mutex_lock(&wl->mutex);
+ if (wl->hw_pg_ver >= 0)
+ len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
+ else
+ len = snprintf(buf, len, "n/a\n");
+ mutex_unlock(&wl->mutex);
+
+ return len;
+ }
+
+ static DEVICE_ATTR(hw_pg_ver, S_IRUGO,
+ wl1271_sysfs_show_hw_pg_ver, NULL);
+
+ static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buffer, loff_t pos, size_t count)
+ {
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct wl1271 *wl = dev_get_drvdata(dev);
+ ssize_t len;
+ int ret;
+
+ ret = mutex_lock_interruptible(&wl->mutex);
+ if (ret < 0)
+ return -ERESTARTSYS;
+
+ /* Let only one thread read the log at a time, blocking others */
+ while (wl->fwlog_size == 0) {
+ DEFINE_WAIT(wait);
+
+ prepare_to_wait_exclusive(&wl->fwlog_waitq,
+ &wait,
+ TASK_INTERRUPTIBLE);
+
+ if (wl->fwlog_size != 0) {
+ finish_wait(&wl->fwlog_waitq, &wait);
+ break;
+ }
+
+ mutex_unlock(&wl->mutex);
+
+ schedule();
+ finish_wait(&wl->fwlog_waitq, &wait);
+
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+
+ ret = mutex_lock_interruptible(&wl->mutex);
+ if (ret < 0)
+ return -ERESTARTSYS;
+ }
+
+ /* Check if the fwlog is still valid */
+ if (wl->fwlog_size < 0) {
+ mutex_unlock(&wl->mutex);
+ return 0;
+ }
+
+ /* Seeking is not supported - old logs are not kept. Disregard pos. */
+ len = min(count, (size_t)wl->fwlog_size);
+ wl->fwlog_size -= len;
+ memcpy(buffer, wl->fwlog, len);
+
+ /* Make room for new messages */
+ memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
+
+ mutex_unlock(&wl->mutex);
+
+ return len;
+ }
+
+ static struct bin_attribute fwlog_attr = {
+ .attr = {.name = "fwlog", .mode = S_IRUSR},
+ .read = wl1271_sysfs_read_fwlog,
+ };
+
+ static void wl12xx_derive_mac_addresses(struct wl1271 *wl,
+ u32 oui, u32 nic, int n)
+ {
+ int i;
+
+ wl1271_debug(DEBUG_PROBE, "base address: oui %06x nic %06x, n %d",
+ oui, nic, n);
+
+ if (nic + n - 1 > 0xffffff)
+ wl1271_warning("NIC part of the MAC address wraps around!");
+
+ for (i = 0; i < n; 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++;
+ }
+
+ wl->hw->wiphy->n_addresses = n;
+ wl->hw->wiphy->addresses = wl->addresses;
+ }
+
+ static int wl12xx_get_hw_info(struct wl1271 *wl)
+ {
+ int ret;
+
+ ret = wl12xx_set_power_on(wl);
+ if (ret < 0)
+ goto out;
+
+ wl->chip.id = wlcore_read_reg(wl, REG_CHIP_ID_B);
+
+ wl->fuse_oui_addr = 0;
+ wl->fuse_nic_addr = 0;
+
+ wl->hw_pg_ver = wl->ops->get_pg_ver(wl);
+
+ if (wl->ops->get_mac)
+ wl->ops->get_mac(wl);
+
+ wl1271_power_off(wl);
+ out:
+ return ret;
+ }
+
+ static int wl1271_register_hw(struct wl1271 *wl)
+ {
+ int ret;
+ u32 oui_addr = 0, nic_addr = 0;
+
+ if (wl->mac80211_registered)
+ return 0;
+
+ ret = wl12xx_get_hw_info(wl);
+ if (ret < 0) {
+ wl1271_error("couldn't get hw info");
+ goto out;
+ }
+
+ ret = wl1271_fetch_nvs(wl);
+ if (ret == 0) {
+ /* 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;
+ }
+
+ wl12xx_derive_mac_addresses(wl, oui_addr, nic_addr, 2);
+
+ 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)
+ {
+ 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 and the TKIP space. */
+ wl->hw->extra_tx_headroom = WL1271_EXTRA_SPACE_TKIP +
+ sizeof(struct wl1271_tx_hw_descr);
+
+ /* unit us */
+ /* FIXME: find a proper value */
+ wl->hw->channel_change_time = 10000;
+ wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
+
+ wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_SUPPORTS_PS |
+ IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
+ IEEE80211_HW_SUPPORTS_UAPSD |
+ IEEE80211_HW_HAS_RATE_CONTROL |
+ IEEE80211_HW_CONNECTION_MONITOR |
+ IEEE80211_HW_REPORTS_TX_ACK_STATUS |
+ IEEE80211_HW_SPECTRUM_MGMT |
+ IEEE80211_HW_AP_LINK_PS |
+ IEEE80211_HW_AMPDU_AGGREGATION |
+ IEEE80211_HW_TX_AMPDU_SETUP_IN_HW |
+ IEEE80211_HW_SCAN_WHILE_IDLE;
+
+ 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_ADHOC) | BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_P2P_CLIENT) | 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_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
+ sizeof(struct ieee80211_header);
+
++ wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD |
++ WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
+
+ /* 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);
+ /*
+ * We keep local copies of the band structs because we need to
+ * modify them on a per-device basis.
+ */
+ memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
+ sizeof(wl1271_band_2ghz));
+ memcpy(&wl->bands[IEEE80211_BAND_2GHZ].ht_cap, &wl->ht_cap,
+ sizeof(wl->ht_cap));
+ memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
+ sizeof(wl1271_band_5ghz));
+ memcpy(&wl->bands[IEEE80211_BAND_5GHZ].ht_cap, &wl->ht_cap,
+ sizeof(wl->ht_cap));
+
+ wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+ &wl->bands[IEEE80211_BAND_2GHZ];
+ wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &wl->bands[IEEE80211_BAND_5GHZ];
+
+ wl->hw->queues = 4;
+ 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;
+
+ 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;
+ }
+
+ #define WL1271_DEFAULT_CHANNEL 0
+
+ struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size)
+ {
+ struct ieee80211_hw *hw;
+ struct wl1271 *wl;
+ int i, j, ret;
+ unsigned int order;
+
+ BUILD_BUG_ON(AP_MAX_STATIONS > WL12XX_MAX_LINKS);
+
+ 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;
+
+ for (i = 0; i < NUM_TX_QUEUES; i++)
+ for (j = 0; j < WL12XX_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_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
+ 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->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 = WL1271_DEFAULT_CHANNEL;
+ wl->rx_counter = 0;
+ wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
+ wl->band = IEEE80211_BAND_2GHZ;
+ wl->flags = 0;
+ wl->sg_enabled = true;
+ wl->hw_pg_ver = -1;
+ wl->ap_ps_map = 0;
+ wl->ap_fw_ps_map = 0;
+ wl->quirks = 0;
+ wl->platform_quirks = 0;
+ wl->sched_scanning = false;
+ wl->system_hlid = WL12XX_SYSTEM_HLID;
+ wl->active_sta_count = 0;
+ wl->fwlog_size = 0;
+ init_waitqueue_head(&wl->fwlog_waitq);
+
+ /* 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 = WL1271_STATE_OFF;
+ wl->fw_type = WL12XX_FW_TYPE_NONE;
+ mutex_init(&wl->mutex);
+
+ order = get_order(WL1271_AGGR_BUFFER_SIZE);
+ wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
+ if (!wl->aggr_buf) {
+ ret = -ENOMEM;
+ goto err_wq;
+ }
+
+ 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 = kmalloc(sizeof(*wl->mbox), GFP_DMA);
+ if (!wl->mbox) {
+ ret = -ENOMEM;
+ goto err_fwlog;
+ }
+
+ return hw;
+
+ 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;
+ wake_up_interruptible_all(&wl->fwlog_waitq);
+ mutex_unlock(&wl->mutex);
+
+ device_remove_bin_file(wl->dev, &fwlog_attr);
+
+ device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
+
+ device_remove_file(wl->dev, &dev_attr_bt_coex_state);
+ free_page((unsigned long)wl->fwlog);
+ dev_kfree_skb(wl->dummy_packet);
+ free_pages((unsigned long)wl->aggr_buf,
+ get_order(WL1271_AGGR_BUFFER_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->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);
+
+ static irqreturn_t wl12xx_hardirq(int irq, void *cookie)
+ {
+ struct wl1271 *wl = cookie;
+ unsigned long flags;
+
+ wl1271_debug(DEBUG_IRQ, "IRQ");
+
+ /* complete the ELP completion */
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
+ if (wl->elp_compl) {
+ complete(wl->elp_compl);
+ wl->elp_compl = NULL;
+ }
+
+ 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");
+ disable_irq_nosync(wl->irq);
+ pm_wakeup_event(wl->dev, 0);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+ return IRQ_HANDLED;
+ }
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ return IRQ_WAKE_THREAD;
+ }
+
+ int __devinit wlcore_probe(struct wl1271 *wl, struct platform_device *pdev)
+ {
+ struct wl12xx_platform_data *pdata = pdev->dev.platform_data;
+ unsigned long irqflags;
+ int ret;
+
+ if (!wl->ops || !wl->ptable) {
+ ret = -EINVAL;
+ goto out_free_hw;
+ }
+
+ BUG_ON(wl->num_tx_desc > WLCORE_MAX_TX_DESCRIPTORS);
+
+ /* adjust some runtime configuration parameters */
+ wlcore_adjust_conf(wl);
+
+ wl->irq = platform_get_irq(pdev, 0);
+ wl->ref_clock = pdata->board_ref_clock;
+ wl->tcxo_clock = pdata->board_tcxo_clock;
+ wl->platform_quirks = pdata->platform_quirks;
+ wl->set_power = pdata->set_power;
+ wl->dev = &pdev->dev;
+ wl->if_ops = pdata->ops;
+
+ platform_set_drvdata(pdev, wl);
+
+ if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+ irqflags = IRQF_TRIGGER_RISING;
+ else
+ irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
+
+ ret = request_threaded_irq(wl->irq, wl12xx_hardirq, wl1271_irq,
+ irqflags,
+ pdev->name, wl);
+ if (ret < 0) {
+ wl1271_error("request_irq() failed: %d", ret);
+ goto out_free_hw;
+ }
+
+ ret = enable_irq_wake(wl->irq);
+ if (!ret) {
+ wl->irq_wake_enabled = true;
+ device_init_wakeup(wl->dev, 1);
+ if (pdata->pwr_in_suspend)
+ wl->hw->wiphy->wowlan.flags = WIPHY_WOWLAN_ANY;
+
+ }
+ disable_irq(wl->irq);
+
+ ret = wl1271_init_ieee80211(wl);
+ if (ret)
+ goto out_irq;
+
+ ret = wl1271_register_hw(wl);
+ if (ret)
+ goto out_irq;
+
+ /* Create sysfs file to control bt coex state */
+ ret = device_create_file(wl->dev, &dev_attr_bt_coex_state);
+ if (ret < 0) {
+ wl1271_error("failed to create sysfs file bt_coex_state");
+ goto out_irq;
+ }
+
+ /* Create sysfs file to get HW PG version */
+ ret = device_create_file(wl->dev, &dev_attr_hw_pg_ver);
+ if (ret < 0) {
+ wl1271_error("failed to create sysfs file hw_pg_ver");
+ goto out_bt_coex_state;
+ }
+
+ /* Create sysfs file for the FW log */
+ ret = device_create_bin_file(wl->dev, &fwlog_attr);
+ if (ret < 0) {
+ wl1271_error("failed to create sysfs file fwlog");
+ goto out_hw_pg_ver;
+ }
+
+ goto out;
+
+ out_hw_pg_ver:
+ device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
+
+ out_bt_coex_state:
+ device_remove_file(wl->dev, &dev_attr_bt_coex_state);
+
+ out_irq:
+ free_irq(wl->irq, wl);
+
+ out_free_hw:
+ wlcore_free_hw(wl);
+
+ out:
+ return ret;
+ }
+ EXPORT_SYMBOL_GPL(wlcore_probe);
+
+ int __devexit wlcore_remove(struct platform_device *pdev)
+ {
+ struct wl1271 *wl = platform_get_drvdata(pdev);
+
+ if (wl->irq_wake_enabled) {
+ device_init_wakeup(wl->dev, 0);
+ disable_irq_wake(wl->irq);
+ }
+ wl1271_unregister_hw(wl);
+ free_irq(wl->irq, wl);
+ wlcore_free_hw(wl);
+
+ return 0;
+ }
+ 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, S_IRUSR | S_IWUSR);
+ MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
+
+ module_param_named(fwlog, fwlog_param, charp, 0);
+ MODULE_PARM_DESC(fwlog,
+ "FW logger options: continuous, ondemand, dbgpins or disable");
+
+ module_param(bug_on_recovery, bool, S_IRUSR | S_IWUSR);
+ MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery");
+
+ module_param(no_recovery, bool, S_IRUSR | S_IWUSR);
+ MODULE_PARM_DESC(no_recovery, "Prevent HW recovery. FW will remain stuck.");
+
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
+ MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
projects / mirror_ubuntu-focal-kernel.git / commitdiff