Re-initialize the target when fw crash is reported.
This would make the device functional again after
target crash. During the target re-initialization
it is made sure that target is not bugged with data/cmd
request, ar->state ATH6KL_STATE_RECOVERY is used
for this purpose.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
ath6kl_core-y += txrx.o
ath6kl_core-y += wmi.o
ath6kl_core-y += core.o
+ath6kl_core-y += recovery.o
ath6kl_core-$(CONFIG_NL80211_TESTMODE) += testmode.o
obj-$(CONFIG_ATH6KL_SDIO) += ath6kl_sdio.o
{
struct ath6kl *ar = wiphy_priv(wiphy);
+ ath6kl_recovery_suspend(ar);
+
return ath6kl_hif_suspend(ar, wow);
}
static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
{
struct ath6kl *ar = wiphy_priv(wiphy);
+ int err;
+
+ err = ath6kl_hif_resume(ar);
+ if (err)
+ return err;
- return ath6kl_hif_resume(ar);
+ ar->fw_recovery.enable = true;
+
+ return 0;
}
/*
clear_bit(CONNECTED, &vif->flags);
clear_bit(CONNECT_PEND, &vif->flags);
+ /* Stop netdev queues, needed during recovery */
+ netif_stop_queue(vif->ndev);
+ netif_carrier_off(vif->ndev);
+
/* disable scanning */
if (ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
struct ath6kl_vif *vif;
vif = ath6kl_vif_first(ar);
- if (!vif) {
+ if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
/* save the current power mode before enabling power save */
ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
__func__, wdev->netdev->name, wdev->netdev, ar);
+ ath6kl_recovery_init(ar);
+
return ret;
err_rxbuf_cleanup:
{
ath6kl_hif_power_off(ar);
+ ath6kl_recovery_cleanup(ar);
+
destroy_workqueue(ar->ath6kl_wq);
if (ar->htc_target)
ATH6KL_STATE_DEEPSLEEP,
ATH6KL_STATE_CUTPOWER,
ATH6KL_STATE_WOW,
+ ATH6KL_STATE_RECOVERY,
+};
+
+/* Fw error recovery */
+enum ath6kl_fw_err {
+ ATH6KL_FW_ASSERT,
};
struct ath6kl {
bool wiphy_registered;
+ struct ath6kl_fw_recovery {
+ bool enable;
+ struct work_struct recovery_work;
+ unsigned long err_reason;
+ } fw_recovery;
+
#ifdef CONFIG_ATH6KL_DEBUG
struct {
struct sk_buff_head fwlog_queue;
void ath6kl_core_cleanup(struct ath6kl *ar);
void ath6kl_core_destroy(struct ath6kl *ar);
+/* Fw error recovery */
+void ath6kl_init_hw_restart(struct ath6kl *ar);
+void ath6kl_recovery_err_notify(struct ath6kl *ar, enum ath6kl_fw_err reason);
+void ath6kl_recovery_init(struct ath6kl *ar);
+void ath6kl_recovery_cleanup(struct ath6kl *ar);
+void ath6kl_recovery_suspend(struct ath6kl *ar);
#endif /* CORE_H */
ATH6KL_DBG_SUSPEND = BIT(20),
ATH6KL_DBG_USB = BIT(21),
ATH6KL_DBG_USB_BULK = BIT(22),
+ ATH6KL_DBG_RECOVERY = BIT(23),
ATH6KL_DBG_ANY = 0xffffffff /* enable all logs */
};
ath6kl_hif_dump_fw_crash(dev->ar);
ath6kl_read_fwlogs(dev->ar);
+ ath6kl_recovery_err_notify(dev->ar, ATH6KL_FW_ASSERT);
return ret;
}
return 0;
}
+void ath6kl_init_hw_restart(struct ath6kl *ar)
+{
+
+ ar->state = ATH6KL_STATE_RECOVERY;
+
+ ath6kl_cfg80211_stop_all(ar);
+
+ if (__ath6kl_init_hw_stop(ar))
+ return;
+
+ if (__ath6kl_init_hw_start(ar)) {
+ ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
+ return;
+ }
+
+ ar->state = ATH6KL_STATE_ON;
+ ar->fw_recovery.err_reason = 0;
+}
+
/* FIXME: move this to cfg80211.c and rename to ath6kl_cfg80211_vif_stop() */
void ath6kl_cleanup_vif(struct ath6kl_vif *vif, bool wmi_ready)
{
--- /dev/null
+/*
+ * Copyright (c) 2012 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "core.h"
+#include "cfg80211.h"
+#include "debug.h"
+
+static void ath6kl_recovery_work(struct work_struct *work)
+{
+ struct ath6kl *ar = container_of(work, struct ath6kl,
+ fw_recovery.recovery_work);
+
+ ath6kl_init_hw_restart(ar);
+}
+
+void ath6kl_recovery_err_notify(struct ath6kl *ar, enum ath6kl_fw_err reason)
+{
+ ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Fw error detected, reason:%d\n",
+ reason);
+
+ set_bit(reason, &ar->fw_recovery.err_reason);
+
+ if (ar->fw_recovery.enable && ar->state != ATH6KL_STATE_RECOVERY)
+ queue_work(ar->ath6kl_wq, &ar->fw_recovery.recovery_work);
+}
+
+void ath6kl_recovery_init(struct ath6kl *ar)
+{
+ struct ath6kl_fw_recovery *recovery = &ar->fw_recovery;
+
+ recovery->enable = true;
+ INIT_WORK(&recovery->recovery_work, ath6kl_recovery_work);
+}
+
+void ath6kl_recovery_cleanup(struct ath6kl *ar)
+{
+ ar->fw_recovery.enable = false;
+
+ cancel_work_sync(&ar->fw_recovery.recovery_work);
+}
+
+void ath6kl_recovery_suspend(struct ath6kl *ar)
+{
+ ath6kl_recovery_cleanup(ar);
+
+ /* Process pending fw error detection */
+ if (ar->fw_recovery.err_reason)
+ ath6kl_init_hw_restart(ar);
+}
case ATH6KL_STATE_RESUMING:
break;
+
+ case ATH6KL_STATE_RECOVERY:
+ break;
}
ath6kl_cfg80211_resume(ar);
int status = 0;
struct ath6kl_cookie *cookie = NULL;
- if (WARN_ON_ONCE(ar->state == ATH6KL_STATE_WOW)) {
+ if (WARN_ON_ONCE(ar->state == ATH6KL_STATE_WOW) ||
+ ar->state == ATH6KL_STATE_RECOVERY) {
dev_kfree_skb(skb);
return -EACCES;
}
projects / cascardo / linux.git / commitdiff