/**
* tty_flush_to_ldisc
* @tty: tty to push
*
* Push the terminal flip buffers to the line discipline.
*
* Must not be called from IRQ context.
*/
void tty_flush_to_ldisc(struct tty_struct *tty)
{
flush_work(&tty->buf.work);
}
static void __exit boost_exit(void)
{
flush_work(&touchboost_wk);
input_unregister_handler(&touchboost_handler);
pm_qos_remove_request(&touchboost_cpu_qos_min);
}
int smc_close_active(struct smc_sock *smc)
{
struct smc_cdc_conn_state_flags *txflags =
&smc->conn.local_tx_ctrl.conn_state_flags;
struct smc_connection *conn = &smc->conn;
struct sock *sk = &smc->sk;
int old_state;
long timeout;
int rc = 0;
timeout = current->flags & PF_EXITING ?
0 : sock_flag(sk, SOCK_LINGER) ?
sk->sk_lingertime : SMC_MAX_STREAM_WAIT_TIMEOUT;
old_state = sk->sk_state;
again:
switch (sk->sk_state) {
case SMC_INIT:
sk->sk_state = SMC_CLOSED;
break;
case SMC_LISTEN:
sk->sk_state = SMC_CLOSED;
sk->sk_state_change(sk); /* wake up accept */
if (smc->clcsock && smc->clcsock->sk) {
rc = kernel_sock_shutdown(smc->clcsock, SHUT_RDWR);
/* wake up kernel_accept of smc_tcp_listen_worker */
smc->clcsock->sk->sk_data_ready(smc->clcsock->sk);
}
smc_close_cleanup_listen(sk);
release_sock(sk);
flush_work(&smc->tcp_listen_work);
lock_sock(sk);
break;
case SMC_ACTIVE:
smc_close_stream_wait(smc, timeout);
release_sock(sk);
cancel_delayed_work_sync(&conn->tx_work);
lock_sock(sk);
if (sk->sk_state == SMC_ACTIVE) {
/* send close request */
rc = smc_close_final(conn);
if (rc)
break;
sk->sk_state = SMC_PEERCLOSEWAIT1;
} else {
/* peer event has changed the state */
goto again;
}
break;
case SMC_APPFINCLOSEWAIT:
/* socket already shutdown wr or both (active close) */
if (txflags->peer_done_writing &&
!smc_close_sent_any_close(conn)) {
/* just shutdown wr done, send close request */
rc = smc_close_final(conn);
if (rc)
break;
}
sk->sk_state = SMC_CLOSED;
break;
case SMC_APPCLOSEWAIT1:
case SMC_APPCLOSEWAIT2:
if (!smc_cdc_rxed_any_close(conn))
smc_close_stream_wait(smc, timeout);
release_sock(sk);
cancel_delayed_work_sync(&conn->tx_work);
lock_sock(sk);
if (sk->sk_state != SMC_APPCLOSEWAIT1 &&
sk->sk_state != SMC_APPCLOSEWAIT2)
goto again;
/* confirm close from peer */
rc = smc_close_final(conn);
if (rc)
break;
if (smc_cdc_rxed_any_close(conn)) {
/* peer has closed the socket already */
sk->sk_state = SMC_CLOSED;
sock_put(sk); /* postponed passive closing */
} else {
/* peer has just issued a shutdown write */
sk->sk_state = SMC_PEERFINCLOSEWAIT;
}
break;
case SMC_PEERCLOSEWAIT1:
case SMC_PEERCLOSEWAIT2:
if (txflags->peer_done_writing &&
!smc_close_sent_any_close(conn)) {
/* just shutdown wr done, send close request */
rc = smc_close_final(conn);
if (rc)
break;
}
/* peer sending PeerConnectionClosed will cause transition */
break;
case SMC_PEERFINCLOSEWAIT:
/* peer sending PeerConnectionClosed will cause transition */
break;
case SMC_PROCESSABORT:
smc_close_abort(conn);
sk->sk_state = SMC_CLOSED;
break;
case SMC_PEERABORTWAIT:
case SMC_CLOSED:
/* nothing to do, add tracing in future patch */
break;
}
if (old_state != sk->sk_state)
sk->sk_state_change(sk);
return rc;
}
static int i915_drm_suspend(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
pci_power_t opregion_target_state;
int error;
/* ignore lid events during suspend */
mutex_lock(&dev_priv->modeset_restore_lock);
dev_priv->modeset_restore = MODESET_SUSPENDED;
mutex_unlock(&dev_priv->modeset_restore_lock);
disable_rpm_wakeref_asserts(dev_priv);
/* We do a lot of poking in a lot of registers, make sure they work
* properly. */
intel_display_set_init_power(dev_priv, true);
drm_kms_helper_poll_disable(dev);
pci_save_state(dev->pdev);
error = i915_gem_suspend(dev);
if (error) {
dev_err(&dev->pdev->dev,
"GEM idle failed, resume might fail\n");
goto out;
}
intel_guc_suspend(dev);
intel_suspend_gt_powersave(dev);
/*
* Disable CRTCs directly since we want to preserve sw state
* for _thaw. Also, power gate the CRTC power wells.
*/
drm_modeset_lock_all(dev);
intel_display_suspend(dev);
drm_modeset_unlock_all(dev);
intel_dp_mst_suspend(dev);
intel_runtime_pm_disable_interrupts(dev_priv);
intel_hpd_cancel_work(dev_priv);
intel_suspend_encoders(dev_priv);
intel_suspend_hw(dev);
i915_gem_suspend_gtt_mappings(dev);
i915_save_state(dev);
opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
intel_opregion_notify_adapter(dev, opregion_target_state);
intel_uncore_forcewake_reset(dev, false);
intel_opregion_fini(dev);
intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
dev_priv->suspend_count++;
intel_display_set_init_power(dev_priv, false);
if (HAS_CSR(dev_priv))
flush_work(&dev_priv->csr.work);
out:
enable_rpm_wakeref_asserts(dev_priv);
return error;
}
static int armada_drm_load(struct drm_device *dev, unsigned long flags)
{
struct armada_private *priv;
struct resource *mem = NULL;
int ret, n;
for (n = 0; ; n++) {
struct resource *r = platform_get_resource(dev->platformdev,
IORESOURCE_MEM, n);
if (!r)
break;
/* Resources above 64K are graphics memory */
if (resource_size(r) > SZ_64K)
mem = r;
else
return -EINVAL;
}
if (!mem)
return -ENXIO;
if (!devm_request_mem_region(dev->dev, mem->start,
resource_size(mem), "armada-drm"))
return -EBUSY;
priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
DRM_ERROR("failed to allocate private\n");
return -ENOMEM;
}
platform_set_drvdata(dev->platformdev, dev);
dev->dev_private = priv;
INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work);
INIT_KFIFO(priv->fb_unref);
/* Mode setting support */
drm_mode_config_init(dev);
dev->mode_config.min_width = 320;
dev->mode_config.min_height = 200;
/*
* With vscale enabled, the maximum width is 1920 due to the
* 1920 by 3 lines RAM
*/
dev->mode_config.max_width = 1920;
dev->mode_config.max_height = 2048;
dev->mode_config.preferred_depth = 24;
dev->mode_config.funcs = &armada_drm_mode_config_funcs;
drm_mm_init(&priv->linear, mem->start, resource_size(mem));
mutex_init(&priv->linear_lock);
ret = component_bind_all(dev->dev, dev);
if (ret)
goto err_kms;
ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
if (ret)
goto err_comp;
dev->irq_enabled = true;
ret = armada_fbdev_init(dev);
if (ret)
goto err_comp;
drm_kms_helper_poll_init(dev);
return 0;
err_comp:
component_unbind_all(dev->dev, dev);
err_kms:
drm_mode_config_cleanup(dev);
drm_mm_takedown(&priv->linear);
flush_work(&priv->fb_unref_work);
return ret;
}
int diag_mux_write(int proc, unsigned char *buf, int len, int ctx)
{
#ifdef CONFIG_LGE_DM_APP
int i;
uint8_t found = 0;
unsigned long flags;
struct diag_usb_info *usb_info = NULL;
#endif
if (proc < 0 || proc >= NUM_MUX_PROC)
return -EINVAL;
#ifdef CONFIG_LGE_DM_APP
if (driver->logging_mode == DM_APP_MODE) {
/* only diag cmd #250 for supporting testmode tool */
if ((GET_BUF_PERIPHERAL(ctx) == APPS_DATA) && (*((char *)buf) == 0xFA)) {
usb_info = &diag_usb[lge_dm_tty->id];
lge_dm_tty->dm_usb_req = diagmem_alloc(driver, sizeof(struct diag_request),
usb_info->mempool);
if (lge_dm_tty->dm_usb_req) {
lge_dm_tty->dm_usb_req->buf = buf;
lge_dm_tty->dm_usb_req->length = len;
lge_dm_tty->dm_usb_req->context = (void *)(uintptr_t)ctx;
queue_work(lge_dm_tty->dm_wq,
&(lge_dm_tty->dm_usb_work));
flush_work(&(lge_dm_tty->dm_usb_work));
}
return 0;
}
for (i = 0; i < lge_dm_tty->num_tbl_entries && !found; i++) {
spin_lock_irqsave(&lge_dm_tty->tbl[i].lock, flags);
if (lge_dm_tty->tbl[i].len == 0) {
lge_dm_tty->tbl[i].buf = buf;
lge_dm_tty->tbl[i].len = len;
lge_dm_tty->tbl[i].ctx = ctx;
found = 1;
diag_ws_on_read(DIAG_WS_MD, len);
}
spin_unlock_irqrestore(&lge_dm_tty->tbl[i].lock, flags);
}
lge_dm_tty->set_logging = 1;
wake_up_interruptible(&lge_dm_tty->waitq);
return 0;
}
#endif
#ifdef CONFIG_LGE_DIAG_BYPASS
if(diag_bypass_response(buf, len, proc, ctx, logger) > 0) {
return 0;
}
#endif
if (logger && logger->log_ops && logger->log_ops->write)
return logger->log_ops->write(proc, buf, len, ctx);
return 0;
}
static void flush_request_submodules(struct saa7134_dev *dev)
{
flush_work(&dev->request_module_wk);
}
static int armada_drm_load(struct drm_device *dev, unsigned long flags)
{
const struct platform_device_id *id;
const struct armada_variant *variant;
struct armada_private *priv;
struct resource *res[ARRAY_SIZE(priv->dcrtc)];
struct resource *mem = NULL;
int ret, n, i;
memset(res, 0, sizeof(res));
for (n = i = 0; ; n++) {
struct resource *r = platform_get_resource(dev->platformdev,
IORESOURCE_MEM, n);
if (!r)
break;
/* Resources above 64K are graphics memory */
if (resource_size(r) > SZ_64K)
mem = r;
else if (i < ARRAY_SIZE(priv->dcrtc))
res[i++] = r;
else
return -EINVAL;
}
if (!mem)
return -ENXIO;
if (!devm_request_mem_region(dev->dev, mem->start,
resource_size(mem), "armada-drm"))
return -EBUSY;
priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
DRM_ERROR("failed to allocate private\n");
return -ENOMEM;
}
platform_set_drvdata(dev->platformdev, dev);
dev->dev_private = priv;
/* Get the implementation specific driver data. */
id = platform_get_device_id(dev->platformdev);
if (!id)
return -ENXIO;
variant = (const struct armada_variant *)id->driver_data;
INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work);
INIT_KFIFO(priv->fb_unref);
/* Mode setting support */
drm_mode_config_init(dev);
dev->mode_config.min_width = 320;
dev->mode_config.min_height = 200;
/*
* With vscale enabled, the maximum width is 1920 due to the
* 1920 by 3 lines RAM
*/
dev->mode_config.max_width = 1920;
dev->mode_config.max_height = 2048;
dev->mode_config.preferred_depth = 24;
dev->mode_config.funcs = &armada_drm_mode_config_funcs;
drm_mm_init(&priv->linear, mem->start, resource_size(mem));
/* Create all LCD controllers */
for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
int irq;
if (!res[n])
break;
irq = platform_get_irq(dev->platformdev, n);
if (irq < 0)
goto err_kms;
ret = armada_drm_crtc_create(dev, dev->dev, res[n], irq,
variant, NULL);
if (ret)
goto err_kms;
}
if (is_componentized(dev->dev)) {
ret = component_bind_all(dev->dev, dev);
if (ret)
goto err_kms;
} else {
#ifdef CONFIG_DRM_ARMADA_TDA1998X
ret = armada_drm_connector_slave_create(dev, &tda19988_config);
if (ret)
goto err_kms;
#endif
}
ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
if (ret)
goto err_comp;
dev->irq_enabled = true;
dev->vblank_disable_allowed = 1;
ret = armada_fbdev_init(dev);
if (ret)
goto err_comp;
drm_kms_helper_poll_init(dev);
return 0;
err_comp:
if (is_componentized(dev->dev))
component_unbind_all(dev->dev, dev);
err_kms:
drm_mode_config_cleanup(dev);
drm_mm_takedown(&priv->linear);
flush_work(&priv->fb_unref_work);
return ret;
}
static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mcast_filter_cmd mcast_filter_cmd = {
.pass_all = 1,
};
memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
sizeof(mcast_filter_cmd),
&mcast_filter_cmd);
}
static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
if (changes & BSS_CHANGED_ASSOC) {
if (bss_conf->assoc) {
/* add quota for this interface */
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret) {
IWL_ERR(mvm, "failed to update quotas\n");
return;
}
iwl_mvm_bt_coex_vif_assoc(mvm, vif);
iwl_mvm_configure_mcast_filter(mvm, vif);
} else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
/* remove AP station now that the MAC is unassoc */
ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
if (ret)
IWL_ERR(mvm, "failed to remove AP station\n");
mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
/* remove quota for this interface */
ret = iwl_mvm_update_quotas(mvm, NULL);
if (ret)
IWL_ERR(mvm, "failed to update quotas\n");
}
} else if (changes & BSS_CHANGED_DTIM_PERIOD) {
/*
* We received a beacon _after_ association so
* remove the session protection.
*/
iwl_mvm_remove_time_event(mvm, mvmvif,
&mvmvif->time_event_data);
} else if (changes & BSS_CHANGED_PS) {
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single
* MAC. Avoid power mode update if more than one interface
* is active.
*/
IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
mvm->vif_count);
if (mvm->vif_count == 1) {
ret = iwl_mvm_power_update_mode(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to update power mode\n");
}
}
}
static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
/* Send the beacon template */
ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
if (ret)
goto out_unlock;
/* Add the mac context */
ret = iwl_mvm_mac_ctxt_add(mvm, vif);
if (ret)
goto out_unlock;
/* Perform the binding */
ret = iwl_mvm_binding_add_vif(mvm, vif);
if (ret)
goto out_remove;
mvmvif->ap_active = true;
/* Send the bcast station. At this stage the TBTT and DTIM time events
* are added and applied to the scheduler */
ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
if (ret)
goto out_unbind;
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret)
goto out_rm_bcast;
/* Need to update the P2P Device MAC */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
mutex_unlock(&mvm->mutex);
return 0;
out_rm_bcast:
iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
out_unbind:
iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
iwl_mvm_prepare_mac_removal(mvm, vif);
mutex_lock(&mvm->mutex);
mvmvif->ap_active = false;
/* Need to update the P2P Device MAC */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
iwl_mvm_update_quotas(mvm, NULL);
iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
iwl_mvm_binding_remove_vif(mvm, vif);
iwl_mvm_mac_ctxt_remove(mvm, vif);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
/* Need to send a new beacon template to the FW */
if (changes & BSS_CHANGED_BEACON) {
if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
IWL_WARN(mvm, "Failed updating beacon data\n");
}
}
static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
break;
case NL80211_IFTYPE_AP:
iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
break;
default:
/* shouldn't happen */
WARN_ON_ONCE(1);
}
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_scan_request *req)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
return -EINVAL;
mutex_lock(&mvm->mutex);
if (mvm->scan_status == IWL_MVM_SCAN_NONE)
ret = iwl_mvm_scan_request(mvm, vif, req);
else
ret = -EBUSY;
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
iwl_mvm_cancel_scan(mvm);
mutex_unlock(&mvm->mutex);
}
static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u16 tid,
int num_frames,
enum ieee80211_frame_release_type reason,
bool more_data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
/* TODO: how do we tell the fw to send frames for a specific TID */
/*
* The fw will send EOSP notification when the last frame will be
* transmitted.
*/
iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
}
static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
switch (cmd) {
case STA_NOTIFY_SLEEP:
if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
ieee80211_sta_block_awake(hw, sta, true);
/*
* The fw updates the STA to be asleep. Tx packets on the Tx
* queues to this station will not be transmitted. The fw will
* send a Tx response with TX_STATUS_FAIL_DEST_PS.
*/
break;
case STA_NOTIFY_AWAKE:
if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
break;
iwl_mvm_sta_modify_ps_wake(mvm, sta);
break;
default:
break;
}
}
static int iwl_mvm_mac_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 iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
sta->addr, old_state, new_state);
/* this would be a mac80211 bug ... but don't crash */
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
/* if a STA is being removed, reuse its ID */
flush_work(&mvm->sta_drained_wk);
mutex_lock(&mvm->mutex);
if (old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
ret = iwl_mvm_add_sta(mvm, vif, sta);
} else if (old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_AUTH) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC) {
ret = iwl_mvm_update_sta(mvm, vif, sta);
if (ret == 0)
iwl_mvm_rs_rate_init(mvm, sta,
mvmvif->phy_ctxt->channel->band);
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTHORIZED) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTHORIZED &&
new_state == IEEE80211_STA_ASSOC) {
ret = 0;
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_NONE) {
ret = 0;
} else if (old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_NOTEXIST) {
ret = iwl_mvm_rm_sta(mvm, vif, sta);
} else {
ret = -EIO;
}
mutex_unlock(&mvm->mutex);
return ret;
}
static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mvm->rts_threshold = value;
return 0;
}
static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 ac,
const struct ieee80211_tx_queue_params *params)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mvmvif->queue_params[ac] = *params;
/*
* No need to update right away, we'll get BSS_CHANGED_QOS
* The exception is P2P_DEVICE interface which needs immediate update.
*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
int ret;
mutex_lock(&mvm->mutex);
ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
mutex_unlock(&mvm->mutex);
return ret;
}
return 0;
}
static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
200 + vif->bss_conf.beacon_int);
u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
100 + vif->bss_conf.beacon_int);
if (WARN_ON_ONCE(vif->bss_conf.assoc))
return;
mutex_lock(&mvm->mutex);
/* Try really hard to protect the session and hear a beacon */
iwl_mvm_protect_session(mvm, vif, duration, min_duration);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
if (iwlwifi_mod_params.sw_crypto) {
IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
return -EOPNOTSUPP;
}
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
/* fall-through */
case WLAN_CIPHER_SUITE_CCMP:
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
/*
* Support for TX only, at least for now, so accept
* the key and do nothing else. Then mac80211 will
* pass it for TX but we don't have to use it for RX.
*/
return 0;
default:
return -EOPNOTSUPP;
}
mutex_lock(&mvm->mutex);
switch (cmd) {
case SET_KEY:
if (vif->type == NL80211_IFTYPE_AP && !sta) {
/* GTK on AP interface is a TX-only key, return 0 */
ret = 0;
key->hw_key_idx = STA_KEY_IDX_INVALID;
break;
}
IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
if (ret) {
IWL_WARN(mvm, "set key failed\n");
/*
* can't add key for RX, but we don't need it
* in the device for TX so still return 0
*/
key->hw_key_idx = STA_KEY_IDX_INVALID;
ret = 0;
}
break;
case DISABLE_KEY:
if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
ret = 0;
break;
}
IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
break;
default:
ret = -EINVAL;
}
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta,
u32 iv32, u16 *phase1key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}
static int iwl_mvm_roc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *channel,
int duration,
enum ieee80211_roc_type type)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct cfg80211_chan_def chandef;
int ret;
if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
return -EINVAL;
}
IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
duration, type);
mutex_lock(&mvm->mutex);
cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
&chandef, 1, 1);
/* Schedule the time events */
ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
mutex_unlock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "leave\n");
return ret;
}
static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
IWL_DEBUG_MAC80211(mvm, "enter\n");
mutex_lock(&mvm->mutex);
iwl_mvm_stop_p2p_roc(mvm);
mutex_unlock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "leave\n");
return 0;
}
static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
int ret;
mutex_lock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
ctx->rx_chains_static,
ctx->rx_chains_dynamic);
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
mutex_lock(&mvm->mutex);
iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx,
u32 changed)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
mutex_lock(&mvm->mutex);
iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
ctx->rx_chains_static,
ctx->rx_chains_dynamic);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
mvmvif->phy_ctxt = phyctx;
switch (vif->type) {
case NL80211_IFTYPE_AP:
/*
* The AP binding flow is handled as part of the start_ap flow
* (in bss_info_changed).
*/
ret = 0;
goto out_unlock;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MONITOR:
break;
default:
ret = -EINVAL;
goto out_unlock;
}
ret = iwl_mvm_binding_add_vif(mvm, vif);
if (ret)
goto out_unlock;
/*
* Setting the quota at this stage is only required for monitor
* interfaces. For the other types, the bss_info changed flow
* will handle quota settings.
*/
if (vif->type == NL80211_IFTYPE_MONITOR) {
mvmvif->monitor_active = true;
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret)
goto out_remove_binding;
}
goto out_unlock;
out_remove_binding:
iwl_mvm_binding_remove_vif(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
if (ret)
mvmvif->phy_ctxt = NULL;
return ret;
}
static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mutex_lock(&mvm->mutex);
iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
if (vif->type == NL80211_IFTYPE_AP)
goto out_unlock;
switch (vif->type) {
case NL80211_IFTYPE_MONITOR:
mvmvif->monitor_active = false;
iwl_mvm_update_quotas(mvm, NULL);
break;
default:
break;
}
iwl_mvm_binding_remove_vif(mvm, vif);
out_unlock:
mvmvif->phy_ctxt = NULL;
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
bool set)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
if (!mvm_sta || !mvm_sta->vif) {
IWL_ERR(mvm, "Station is not associated to a vif\n");
return -EINVAL;
}
return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
}
static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_rssi_event rssi_event)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
}
struct ieee80211_ops iwl_mvm_hw_ops = {
.tx = iwl_mvm_mac_tx,
.ampdu_action = iwl_mvm_mac_ampdu_action,
.start = iwl_mvm_mac_start,
.restart_complete = iwl_mvm_mac_restart_complete,
.stop = iwl_mvm_mac_stop,
.add_interface = iwl_mvm_mac_add_interface,
.remove_interface = iwl_mvm_mac_remove_interface,
.config = iwl_mvm_mac_config,
.configure_filter = iwl_mvm_configure_filter,
.bss_info_changed = iwl_mvm_bss_info_changed,
.hw_scan = iwl_mvm_mac_hw_scan,
.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
.sta_state = iwl_mvm_mac_sta_state,
.sta_notify = iwl_mvm_mac_sta_notify,
.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
.conf_tx = iwl_mvm_mac_conf_tx,
.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
.set_key = iwl_mvm_mac_set_key,
.update_tkip_key = iwl_mvm_mac_update_tkip_key,
.remain_on_channel = iwl_mvm_roc,
.cancel_remain_on_channel = iwl_mvm_cancel_roc,
.rssi_callback = iwl_mvm_mac_rssi_callback,
.add_chanctx = iwl_mvm_add_chanctx,
.remove_chanctx = iwl_mvm_remove_chanctx,
.change_chanctx = iwl_mvm_change_chanctx,
.assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
.unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
.start_ap = iwl_mvm_start_ap,
.stop_ap = iwl_mvm_stop_ap,
.set_tim = iwl_mvm_set_tim,
#ifdef CONFIG_PM_SLEEP
/* look at d3.c */
.suspend = iwl_mvm_suspend,
.resume = iwl_mvm_resume,
.set_wakeup = iwl_mvm_set_wakeup,
.set_rekey_data = iwl_mvm_set_rekey_data,
#if IS_ENABLED(CONFIG_IPV6)
.ipv6_addr_change = iwl_mvm_ipv6_addr_change,
#endif
.set_default_unicast_key = iwl_mvm_set_default_unicast_key,
#endif
};
/**
* @brief Disable HW counters collection
*
* Note: might sleep, waiting for an ongoing dump to complete
*/
mali_error kbase_instr_hwcnt_disable_sec(struct kbase_context *kctx)
{
unsigned long flags, pm_flags;
mali_error err = MALI_ERROR_FUNCTION_FAILED;
u32 irq_mask;
struct kbase_device *kbdev;
KBASE_DEBUG_ASSERT(NULL != kctx);
kbdev = kctx->kbdev;
KBASE_DEBUG_ASSERT(NULL != kbdev);
/* MALI_SEC 140925 */
flush_work(&kbdev->hwcnt.cache_clean_work);
while (1) {
spin_lock_irqsave(&kbdev->hwcnt.lock, flags);
if (kbdev->hwcnt.state == KBASE_INSTR_STATE_DISABLED) {
/* Instrumentation is not enabled */
spin_unlock_irqrestore(&kbdev->hwcnt.lock, flags);
goto out;
}
if (kbdev->hwcnt.kctx != kctx) {
/* Instrumentation has been setup for another context */
spin_unlock_irqrestore(&kbdev->hwcnt.lock, flags);
goto out;
}
if (kbdev->hwcnt.state == KBASE_INSTR_STATE_IDLE)
break;
spin_unlock_irqrestore(&kbdev->hwcnt.lock, flags);
/* Ongoing dump/setup - wait for its completion */
if (wait_event_timeout(kbdev->hwcnt.wait, kbdev->hwcnt.triggered != 0, kbdev->hwcnt.timeout) == 0)
kbdev->hwcnt.state = KBASE_INSTR_STATE_IDLE;
}
kbdev->hwcnt.state = KBASE_INSTR_STATE_DISABLED;
kbdev->hwcnt.triggered = 0;
/* Disable interrupt */
spin_lock_irqsave(&kbdev->pm.power_change_lock, pm_flags);
irq_mask = kbase_reg_read(kbdev, GPU_CONTROL_REG(GPU_IRQ_MASK), NULL);
kbase_reg_write(kbdev, GPU_CONTROL_REG(GPU_IRQ_MASK), irq_mask & ~PRFCNT_SAMPLE_COMPLETED, NULL);
spin_unlock_irqrestore(&kbdev->pm.power_change_lock, pm_flags);
/* Disable the counters */
kbase_reg_write(kbdev, GPU_CONTROL_REG(PRFCNT_CONFIG), 0, kctx);
kbdev->hwcnt.kctx = NULL;
kbdev->hwcnt.addr = 0ULL;
spin_unlock_irqrestore(&kbdev->hwcnt.lock, flags);
dev_dbg(kbdev->dev, "HW counters dumping disabled for context %p", kctx);
err = MALI_ERROR_NONE;
out:
kbdev->hwcnt.trig_exception = 0;
return err;
}
static void rpmsg_echo_test_kern_app_remove(struct rpmsg_channel *rpdev)
{
struct _rpmsg_dev_params *local = dev_get_drvdata(&rpdev->dev);
flush_work(&local->rpmsg_work);
}
/**
* tty_flush_to_ldisc
* @tty: tty to push
*
* Push the terminal flip buffers to the line discipline.
*
* Must not be called from IRQ context.
*/
void tty_flush_to_ldisc(struct tty_struct *tty)
{
if (!tty->low_latency)
flush_work(&tty->port->buf.work);
}
static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
{
/* flush all pending status updates */
flush_work(&bat_work);
return 0;
}
void o2quo_exit(void)
{
struct o2quo_state *qs = &o2quo_state;
flush_work(&qs->qs_work);
}
void prrn_schedule_update(u32 scope)
{
flush_work(&prrn_work);
prrn_update_scope = scope;
schedule_work(&prrn_work);
}
static int wm97xx_bat_suspend(struct device *dev)
{
flush_work(&bat_work);
return 0;
}
static void flush_request_modules(struct cx18 *dev)
{
flush_work(&dev->request_module_wk);
}
static inline int
nvif_notify_put_(struct nvif_notify *notify)
{
struct nvif_object *object = notify->object;
struct {
struct nvif_ioctl_v0 ioctl;
struct nvif_ioctl_ntfy_put_v0 ntfy;
} args = {
.ioctl.type = NVIF_IOCTL_V0_NTFY_PUT,
.ntfy.index = notify->index,
};
if (atomic_inc_return(¬ify->putcnt) != 1)
return 0;
return nvif_object_ioctl(object, &args, sizeof(args), NULL);
}
int
nvif_notify_put(struct nvif_notify *notify)
{
if (likely(notify->object) &&
test_and_clear_bit(NVIF_NOTIFY_USER, ¬ify->flags)) {
int ret = nvif_notify_put_(notify);
if (test_bit(NVIF_NOTIFY_WORK, ¬ify->flags))
flush_work(¬ify->work);
return ret;
}
return 0;
}
static inline int
nvif_notify_get_(struct nvif_notify *notify)
{
struct nvif_object *object = notify->object;
struct {
struct nvif_ioctl_v0 ioctl;
struct nvif_ioctl_ntfy_get_v0 ntfy;
} args = {
.ioctl.type = NVIF_IOCTL_V0_NTFY_GET,
.ntfy.index = notify->index,
};
if (atomic_dec_return(¬ify->putcnt) != 0)
return 0;
return nvif_object_ioctl(object, &args, sizeof(args), NULL);
}
int
nvif_notify_get(struct nvif_notify *notify)
{
if (likely(notify->object) &&
!test_and_set_bit(NVIF_NOTIFY_USER, ¬ify->flags))
return nvif_notify_get_(notify);
return 0;
}
static inline int
nvif_notify_func(struct nvif_notify *notify, bool keep)
{
int ret = notify->func(notify);
if (ret == NVIF_NOTIFY_KEEP ||
!test_and_clear_bit(NVKM_NOTIFY_USER, ¬ify->flags)) {
if (!keep)
atomic_dec(¬ify->putcnt);
else
nvif_notify_get_(notify);
}
return ret;
}
static void
nvif_notify_work(struct work_struct *work)
{
struct nvif_notify *notify = container_of(work, typeof(*notify), work);
nvif_notify_func(notify, true);
}
int
nvif_notify(const void *header, u32 length, const void *data, u32 size)
{
struct nvif_notify *notify = NULL;
const union {
struct nvif_notify_rep_v0 v0;
} *args = header;
int ret = NVIF_NOTIFY_DROP;
if (length == sizeof(args->v0) && args->v0.version == 0) {
if (WARN_ON(args->v0.route))
return NVIF_NOTIFY_DROP;
notify = (void *)(unsigned long)args->v0.token;
}
if (!WARN_ON(notify == NULL)) {
struct nvif_client *client = nvif_client(notify->object);
if (!WARN_ON(notify->size != size)) {
atomic_inc(¬ify->putcnt);
if (test_bit(NVIF_NOTIFY_WORK, ¬ify->flags)) {
memcpy((void *)notify->data, data, size);
schedule_work(¬ify->work);
return NVIF_NOTIFY_DROP;
}
notify->data = data;
ret = nvif_notify_func(notify, client->driver->keep);
notify->data = NULL;
}
}
return ret;
}
int
nvif_notify_fini(struct nvif_notify *notify)
{
struct nvif_object *object = notify->object;
struct {
struct nvif_ioctl_v0 ioctl;
struct nvif_ioctl_ntfy_del_v0 ntfy;
} args = {
.ioctl.type = NVIF_IOCTL_V0_NTFY_DEL,
.ntfy.index = notify->index,
};
int ret = nvif_notify_put(notify);
if (ret >= 0 && object) {
ret = nvif_object_ioctl(object, &args, sizeof(args), NULL);
if (ret == 0) {
nvif_object_ref(NULL, ¬ify->object);
kfree((void *)notify->data);
}
}
return ret;
}
int
nvif_notify_init(struct nvif_object *object, void (*dtor)(struct nvif_notify *),
int (*func)(struct nvif_notify *), bool work, u8 event,
void *data, u32 size, u32 reply, struct nvif_notify *notify)
{
struct {
struct nvif_ioctl_v0 ioctl;
struct nvif_ioctl_ntfy_new_v0 ntfy;
struct nvif_notify_req_v0 req;
} *args;
int ret = -ENOMEM;
notify->object = NULL;
nvif_object_ref(object, ¬ify->object);
notify->flags = 0;
atomic_set(¬ify->putcnt, 1);
notify->dtor = dtor;
notify->func = func;
notify->data = NULL;
notify->size = reply;
if (work) {
INIT_WORK(¬ify->work, nvif_notify_work);
set_bit(NVIF_NOTIFY_WORK, ¬ify->flags);
notify->data = kmalloc(notify->size, GFP_KERNEL);
if (!notify->data)
goto done;
}
if (!(args = kmalloc(sizeof(*args) + size, GFP_KERNEL)))
goto done;
args->ioctl.version = 0;
args->ioctl.type = NVIF_IOCTL_V0_NTFY_NEW;
args->ntfy.version = 0;
args->ntfy.event = event;
args->req.version = 0;
args->req.reply = notify->size;
args->req.route = 0;
args->req.token = (unsigned long)(void *)notify;
memcpy(args->req.data, data, size);
ret = nvif_object_ioctl(object, args, sizeof(*args) + size, NULL);
notify->index = args->ntfy.index;
kfree(args);
done:
if (ret)
nvif_notify_fini(notify);
return ret;
}
static void
nvif_notify_del(struct nvif_notify *notify)
{
nvif_notify_fini(notify);
kfree(notify);
}
void
nvif_notify_ref(struct nvif_notify *notify, struct nvif_notify **pnotify)
{
BUG_ON(notify != NULL);
if (*pnotify)
(*pnotify)->dtor(*pnotify);
*pnotify = notify;
}
/**
* tty_ldisc_flush_works - flush all works of a tty
* @tty: tty device to flush works for
*
* Sync flush all works belonging to @tty.
*/
static void tty_ldisc_flush_works(struct tty_struct *tty)
{
flush_work(&tty->hangup_work);
flush_work(&tty->SAK_work);
flush_work(&tty->port->buf.work);
}
/*
* vtpm_proxy_work_stop: make sure the work has finished
*
* This function is useful when user space closed the fd
* while the driver still determines timeouts.
*/
static void vtpm_proxy_work_stop(struct proxy_dev *proxy_dev)
{
vtpm_proxy_fops_undo_open(proxy_dev);
flush_work(&proxy_dev->work);
}
static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
u32 tfd_msk = 0, ac;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
tfd_msk |= BIT(vif->hw_queue[ac]);
if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
tfd_msk |= BIT(vif->cab_queue);
if (tfd_msk) {
mutex_lock(&mvm->mutex);
iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
mutex_unlock(&mvm->mutex);
}
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
/*
* Flush the ROC worker which will flush the OFFCHANNEL queue.
* We assume here that all the packets sent to the OFFCHANNEL
* queue are sent in ROC session.
*/
flush_work(&mvm->roc_done_wk);
} else {
/*
* By now, all the AC queues are empty. The AGG queues are
* empty too. We already got all the Tx responses for all the
* packets in the queues. The drain work can have been
* triggered. Flush it. This work item takes the mutex, so kill
* it before we take it.
*/
flush_work(&mvm->sta_drained_wk);
}
mutex_lock(&mvm->mutex);
/*
* For AP/GO interface, the tear down of the resources allocated to the
* interface should be handled as part of the bss_info_changed flow.
*/
if (vif->type == NL80211_IFTYPE_AP) {
iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
goto out_release;
}
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
mvm->p2p_device_vif = NULL;
iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
iwl_mvm_binding_remove_vif(mvm, vif);
iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
mvmvif->phy_ctxt = NULL;
}
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single MAC.
* Check if only one additional interface remains after removing
* current one. Update power mode on the remaining interface.
*/
if (mvm->vif_count)
mvm->vif_count--;
IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
mvm->vif_count);
if (mvm->vif_count == 1) {
ieee80211_iterate_active_interfaces(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_update_iterator, mvm);
}
iwl_mvm_mac_ctxt_remove(mvm, vif);
out_release:
iwl_mvm_mac_ctxt_release(mvm, vif);
mutex_unlock(&mvm->mutex);
}
void pid_wait_quiescent(void)
{
flush_work(&put_pid_work);
}
