static void ath10k_core_restart(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k, restart_work);
mutex_lock(&ar->conf_mutex);
switch (ar->state) {
case ATH10K_STATE_ON:
ar->state = ATH10K_STATE_RESTARTING;
ath10k_hif_stop(ar);
ath10k_scan_finish(ar);
ieee80211_restart_hw(ar->hw);
break;
case ATH10K_STATE_OFF:
/* this can happen if driver is being unloaded
* or if the crash happens during FW probing */
ath10k_warn(ar, "cannot restart a device that hasn't been started\n");
break;
case ATH10K_STATE_RESTARTING:
/* hw restart might be requested from multiple places */
break;
case ATH10K_STATE_RESTARTED:
ar->state = ATH10K_STATE_WEDGED;
/* fall through */
case ATH10K_STATE_WEDGED:
ath10k_warn(ar, "device is wedged, will not restart\n");
break;
case ATH10K_STATE_UTF:
ath10k_warn(ar, "firmware restart in UTF mode not supported\n");
break;
}
mutex_unlock(&ar->conf_mutex);
}
/*
* stop HTC communications, i.e. stop interrupt reception, and flush all
* queued buffers
*/
void ath10k_htc_stop(struct ath10k_htc *htc)
{
spin_lock_bh(&htc->tx_lock);
htc->stopped = true;
spin_unlock_bh(&htc->tx_lock);
ath10k_hif_stop(htc->ar);
}
static void ath10k_core_restart(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k, restart_work);
set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
/* Place a barrier to make sure the compiler doesn't reorder
* CRASH_FLUSH and calling other functions.
*/
barrier();
ieee80211_stop_queues(ar->hw);
ath10k_drain_tx(ar);
complete_all(&ar->scan.started);
complete_all(&ar->scan.completed);
complete_all(&ar->scan.on_channel);
complete_all(&ar->offchan_tx_completed);
complete_all(&ar->install_key_done);
complete_all(&ar->vdev_setup_done);
complete_all(&ar->thermal.wmi_sync);
wake_up(&ar->htt.empty_tx_wq);
wake_up(&ar->wmi.tx_credits_wq);
wake_up(&ar->peer_mapping_wq);
mutex_lock(&ar->conf_mutex);
switch (ar->state) {
case ATH10K_STATE_ON:
ar->state = ATH10K_STATE_RESTARTING;
ath10k_hif_stop(ar);
ath10k_scan_finish(ar);
ieee80211_restart_hw(ar->hw);
break;
case ATH10K_STATE_OFF:
/* this can happen if driver is being unloaded
* or if the crash happens during FW probing */
ath10k_warn(ar, "cannot restart a device that hasn't been started\n");
break;
case ATH10K_STATE_RESTARTING:
/* hw restart might be requested from multiple places */
break;
case ATH10K_STATE_RESTARTED:
ar->state = ATH10K_STATE_WEDGED;
/* fall through */
case ATH10K_STATE_WEDGED:
ath10k_warn(ar, "device is wedged, will not restart\n");
break;
case ATH10K_STATE_UTF:
ath10k_warn(ar, "firmware restart in UTF mode not supported\n");
break;
}
mutex_unlock(&ar->conf_mutex);
}
void ath10k_core_stop(struct ath10k *ar)
{
lockdep_assert_held(&ar->conf_mutex);
/* try to suspend target */
if (ar->state != ATH10K_STATE_RESTARTING)
ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
ath10k_debug_stop(ar);
ath10k_hif_stop(ar);
ath10k_htt_tx_free(&ar->htt);
ath10k_htt_rx_free(&ar->htt);
ath10k_wmi_detach(ar);
}
int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
{
int status;
lockdep_assert_held(&ar->conf_mutex);
clear_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
ath10k_bmi_start(ar);
if (ath10k_init_configure_target(ar)) {
status = -EINVAL;
goto err;
}
status = ath10k_download_cal_data(ar);
if (status)
goto err;
/* Some of of qca988x solutions are having global reset issue
* during target initialization. Bypassing PLL setting before
* downloading firmware and letting the SoC run on REF_CLK is
* fixing the problem. Corresponding firmware change is also needed
* to set the clock source once the target is initialized.
*/
if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_SKIP_CLOCK_INIT,
ar->fw_features)) {
status = ath10k_bmi_write32(ar, hi_skip_clock_init, 1);
if (status) {
ath10k_err(ar, "could not write to skip_clock_init: %d\n",
status);
goto err;
}
}
status = ath10k_download_fw(ar, mode);
if (status)
goto err;
status = ath10k_init_uart(ar);
if (status)
goto err;
ar->htc.htc_ops.target_send_suspend_complete =
ath10k_send_suspend_complete;
status = ath10k_htc_init(ar);
if (status) {
ath10k_err(ar, "could not init HTC (%d)\n", status);
goto err;
}
status = ath10k_bmi_done(ar);
if (status)
goto err;
status = ath10k_wmi_attach(ar);
if (status) {
ath10k_err(ar, "WMI attach failed: %d\n", status);
goto err;
}
status = ath10k_htt_init(ar);
if (status) {
ath10k_err(ar, "failed to init htt: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htt_tx_alloc(&ar->htt);
if (status) {
ath10k_err(ar, "failed to alloc htt tx: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htt_rx_alloc(&ar->htt);
if (status) {
ath10k_err(ar, "failed to alloc htt rx: %d\n", status);
goto err_htt_tx_detach;
}
status = ath10k_hif_start(ar);
if (status) {
ath10k_err(ar, "could not start HIF: %d\n", status);
goto err_htt_rx_detach;
}
status = ath10k_htc_wait_target(&ar->htc);
if (status) {
ath10k_err(ar, "failed to connect to HTC: %d\n", status);
goto err_hif_stop;
}
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_htt_connect(&ar->htt);
if (status) {
ath10k_err(ar, "failed to connect htt (%d)\n", status);
goto err_hif_stop;
}
}
status = ath10k_wmi_connect(ar);
if (status) {
ath10k_err(ar, "could not connect wmi: %d\n", status);
goto err_hif_stop;
}
status = ath10k_htc_start(&ar->htc);
if (status) {
ath10k_err(ar, "failed to start htc: %d\n", status);
goto err_hif_stop;
}
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_wmi_wait_for_service_ready(ar);
if (status) {
ath10k_warn(ar, "wmi service ready event not received");
goto err_hif_stop;
}
}
ath10k_dbg(ar, ATH10K_DBG_BOOT, "firmware %s booted\n",
ar->hw->wiphy->fw_version);
status = ath10k_wmi_cmd_init(ar);
if (status) {
ath10k_err(ar, "could not send WMI init command (%d)\n",
status);
goto err_hif_stop;
}
status = ath10k_wmi_wait_for_unified_ready(ar);
if (status) {
ath10k_err(ar, "wmi unified ready event not received\n");
goto err_hif_stop;
}
/* If firmware indicates Full Rx Reorder support it must be used in a
* slightly different manner. Let HTT code know.
*/
ar->htt.rx_ring.in_ord_rx = !!(test_bit(WMI_SERVICE_RX_FULL_REORDER,
ar->wmi.svc_map));
status = ath10k_htt_rx_ring_refill(ar);
if (status) {
ath10k_err(ar, "failed to refill htt rx ring: %d\n", status);
goto err_hif_stop;
}
/* we don't care about HTT in UTF mode */
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_htt_setup(&ar->htt);
if (status) {
ath10k_err(ar, "failed to setup htt: %d\n", status);
goto err_hif_stop;
}
}
status = ath10k_debug_start(ar);
if (status)
goto err_hif_stop;
ar->free_vdev_map = (1LL << ar->max_num_vdevs) - 1;
INIT_LIST_HEAD(&ar->arvifs);
return 0;
err_hif_stop:
ath10k_hif_stop(ar);
err_htt_rx_detach:
ath10k_htt_rx_free(&ar->htt);
err_htt_tx_detach:
ath10k_htt_tx_free(&ar->htt);
err_wmi_detach:
ath10k_wmi_detach(ar);
err:
return status;
}
int ath10k_htc_wait_target(struct ath10k_htc *htc)
{
int status = 0;
struct ath10k_htc_svc_conn_req conn_req;
struct ath10k_htc_svc_conn_resp conn_resp;
struct ath10k_htc_msg *msg;
u16 message_id;
u16 credit_count;
u16 credit_size;
reinit_completion(&htc->ctl_resp);
status = ath10k_hif_start(htc->ar);
if (status) {
ath10k_err("could not start HIF (%d)\n", status);
goto err_start;
}
status = wait_for_completion_timeout(&htc->ctl_resp,
ATH10K_HTC_WAIT_TIMEOUT_HZ);
if (status <= 0) {
if (status == 0)
status = -ETIMEDOUT;
ath10k_err("ctl_resp never came in (%d)\n", status);
goto err_target;
}
if (htc->control_resp_len < sizeof(msg->hdr) + sizeof(msg->ready)) {
ath10k_err("Invalid HTC ready msg len:%d\n",
htc->control_resp_len);
status = -ECOMM;
goto err_target;
}
msg = (struct ath10k_htc_msg *)htc->control_resp_buffer;
message_id = __le16_to_cpu(msg->hdr.message_id);
credit_count = __le16_to_cpu(msg->ready.credit_count);
credit_size = __le16_to_cpu(msg->ready.credit_size);
if (message_id != ATH10K_HTC_MSG_READY_ID) {
ath10k_err("Invalid HTC ready msg: 0x%x\n", message_id);
status = -ECOMM;
goto err_target;
}
htc->total_transmit_credits = credit_count;
htc->target_credit_size = credit_size;
ath10k_dbg(ATH10K_DBG_HTC,
"Target ready! transmit resources: %d size:%d\n",
htc->total_transmit_credits,
htc->target_credit_size);
if ((htc->total_transmit_credits == 0) ||
(htc->target_credit_size == 0)) {
status = -ECOMM;
ath10k_err("Invalid credit size received\n");
goto err_target;
}
ath10k_htc_setup_target_buffer_assignments(htc);
/* setup our pseudo HTC control endpoint connection */
memset(&conn_req, 0, sizeof(conn_req));
memset(&conn_resp, 0, sizeof(conn_resp));
conn_req.ep_ops.ep_tx_complete = ath10k_htc_control_tx_complete;
conn_req.ep_ops.ep_rx_complete = ath10k_htc_control_rx_complete;
conn_req.max_send_queue_depth = ATH10K_NUM_CONTROL_TX_BUFFERS;
conn_req.service_id = ATH10K_HTC_SVC_ID_RSVD_CTRL;
/* connect fake service */
status = ath10k_htc_connect_service(htc, &conn_req, &conn_resp);
if (status) {
ath10k_err("could not connect to htc service (%d)\n", status);
goto err_target;
}
return 0;
err_target:
ath10k_hif_stop(htc->ar);
err_start:
return status;
}
int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
{
int status;
lockdep_assert_held(&ar->conf_mutex);
ath10k_bmi_start(ar);
if (ath10k_init_configure_target(ar)) {
status = -EINVAL;
goto err;
}
status = ath10k_init_download_firmware(ar, mode);
if (status)
goto err;
status = ath10k_init_uart(ar);
if (status)
goto err;
ar->htc.htc_ops.target_send_suspend_complete =
ath10k_send_suspend_complete;
status = ath10k_htc_init(ar);
if (status) {
ath10k_err(ar, "could not init HTC (%d)\n", status);
goto err;
}
status = ath10k_bmi_done(ar);
if (status)
goto err;
status = ath10k_wmi_attach(ar);
if (status) {
ath10k_err(ar, "WMI attach failed: %d\n", status);
goto err;
}
status = ath10k_htt_init(ar);
if (status) {
ath10k_err(ar, "failed to init htt: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htt_tx_alloc(&ar->htt);
if (status) {
ath10k_err(ar, "failed to alloc htt tx: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htt_rx_alloc(&ar->htt);
if (status) {
ath10k_err(ar, "failed to alloc htt rx: %d\n", status);
goto err_htt_tx_detach;
}
status = ath10k_hif_start(ar);
if (status) {
ath10k_err(ar, "could not start HIF: %d\n", status);
goto err_htt_rx_detach;
}
status = ath10k_htc_wait_target(&ar->htc);
if (status) {
ath10k_err(ar, "failed to connect to HTC: %d\n", status);
goto err_hif_stop;
}
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_htt_connect(&ar->htt);
if (status) {
ath10k_err(ar, "failed to connect htt (%d)\n", status);
goto err_hif_stop;
}
}
status = ath10k_wmi_connect(ar);
if (status) {
ath10k_err(ar, "could not connect wmi: %d\n", status);
goto err_hif_stop;
}
status = ath10k_htc_start(&ar->htc);
if (status) {
ath10k_err(ar, "failed to start htc: %d\n", status);
goto err_hif_stop;
}
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_wmi_wait_for_service_ready(ar);
if (status <= 0) {
ath10k_warn(ar, "wmi service ready event not received");
status = -ETIMEDOUT;
goto err_hif_stop;
}
}
ath10k_dbg(ar, ATH10K_DBG_BOOT, "firmware %s booted\n",
ar->hw->wiphy->fw_version);
status = ath10k_wmi_cmd_init(ar);
if (status) {
ath10k_err(ar, "could not send WMI init command (%d)\n",
status);
goto err_hif_stop;
}
status = ath10k_wmi_wait_for_unified_ready(ar);
if (status <= 0) {
ath10k_err(ar, "wmi unified ready event not received\n");
status = -ETIMEDOUT;
goto err_hif_stop;
}
/* we don't care about HTT in UTF mode */
if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
status = ath10k_htt_setup(&ar->htt);
if (status) {
ath10k_err(ar, "failed to setup htt: %d\n", status);
goto err_hif_stop;
}
}
status = ath10k_debug_start(ar);
if (status)
goto err_hif_stop;
if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features))
ar->free_vdev_map = (1 << TARGET_10X_NUM_VDEVS) - 1;
else
ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
INIT_LIST_HEAD(&ar->arvifs);
return 0;
err_hif_stop:
ath10k_hif_stop(ar);
err_htt_rx_detach:
ath10k_htt_rx_free(&ar->htt);
err_htt_tx_detach:
ath10k_htt_tx_free(&ar->htt);
err_wmi_detach:
ath10k_wmi_detach(ar);
err:
return status;
}
int ath10k_core_start(struct ath10k *ar)
{
int status;
lockdep_assert_held(&ar->conf_mutex);
ath10k_bmi_start(ar);
if (ath10k_init_configure_target(ar)) {
status = -EINVAL;
goto err;
}
status = ath10k_init_download_firmware(ar);
if (status)
goto err;
status = ath10k_init_uart(ar);
if (status)
goto err;
ar->htc.htc_ops.target_send_suspend_complete =
ath10k_send_suspend_complete;
status = ath10k_htc_init(ar);
if (status) {
ath10k_err("could not init HTC (%d)\n", status);
goto err;
}
status = ath10k_bmi_done(ar);
if (status)
goto err;
status = ath10k_wmi_attach(ar);
if (status) {
ath10k_err("WMI attach failed: %d\n", status);
goto err;
}
status = ath10k_hif_start(ar);
if (status) {
ath10k_err("could not start HIF: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htc_wait_target(&ar->htc);
if (status) {
ath10k_err("failed to connect to HTC: %d\n", status);
goto err_hif_stop;
}
status = ath10k_htt_attach(ar);
if (status) {
ath10k_err("could not attach htt (%d)\n", status);
goto err_hif_stop;
}
status = ath10k_init_connect_htc(ar);
if (status)
goto err_htt_detach;
ath10k_dbg(ATH10K_DBG_BOOT, "firmware %s booted\n",
ar->hw->wiphy->fw_version);
status = ath10k_wmi_cmd_init(ar);
if (status) {
ath10k_err("could not send WMI init command (%d)\n", status);
goto err_disconnect_htc;
}
status = ath10k_wmi_wait_for_unified_ready(ar);
if (status <= 0) {
ath10k_err("wmi unified ready event not received\n");
status = -ETIMEDOUT;
goto err_disconnect_htc;
}
status = ath10k_htt_attach_target(&ar->htt);
if (status)
goto err_disconnect_htc;
status = ath10k_debug_start(ar);
if (status)
goto err_disconnect_htc;
ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
INIT_LIST_HEAD(&ar->arvifs);
if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
ath10k_info("%s (0x%x) fw %s api %d htt %d.%d\n",
ar->hw_params.name, ar->target_version,
ar->hw->wiphy->fw_version, ar->fw_api,
ar->htt.target_version_major,
ar->htt.target_version_minor);
__set_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags);
return 0;
err_disconnect_htc:
ath10k_htc_stop(&ar->htc);
err_htt_detach:
ath10k_htt_detach(&ar->htt);
err_hif_stop:
ath10k_hif_stop(ar);
err_wmi_detach:
ath10k_wmi_detach(ar);
err:
return status;
}
