drivers/net/wireless/ti/wl1251/event.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/ti/wl1251/event.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/ti/wl1251/event.c
Extension
.c
Size
5422 bytes
Lines
233
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (wl->station_mode != STATION_POWER_SAVE_MODE) {
			/* remain in active mode */
			wl->psm_entry_retry = 0;
			break;
		}

		if (wl->psm_entry_retry < WL1251_PSM_ENTRY_RETRIES) {
			wl->psm_entry_retry++;
			ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
		} else {
			wl1251_error("Power save entry failed, giving up");
			wl->psm_entry_retry = 0;
		}
		break;
	case EVENT_ENTER_POWER_SAVE_SUCCESS:
	case EVENT_EXIT_POWER_SAVE_FAIL:
	case EVENT_EXIT_POWER_SAVE_SUCCESS:
	default:
		wl->psm_entry_retry = 0;
		break;
	}

	return ret;
}

static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
{
	wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
	wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
	wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
}

static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
{
	int ret;
	u32 vector;

	wl1251_event_mbox_dump(mbox);

	vector = mbox->events_vector & ~(mbox->events_mask);
	wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);

	if (vector & SCAN_COMPLETE_EVENT_ID) {
		ret = wl1251_event_scan_complete(wl, mbox);
		if (ret < 0)
			return ret;
	}

	if (vector & BSS_LOSE_EVENT_ID) {
		wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");

		if (wl->psm_requested &&
		    wl->station_mode != STATION_ACTIVE_MODE) {
			ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
			if (ret < 0)
				return ret;
		}
	}

	if (vector & PS_REPORT_EVENT_ID) {
		wl1251_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
		ret = wl1251_event_ps_report(wl, mbox);
		if (ret < 0)
			return ret;
	}

	if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
		wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");

		/* indicate to the stack, that beacons have been lost */
		if (wl->vif && wl->vif->type == NL80211_IFTYPE_STATION)
			ieee80211_beacon_loss(wl->vif);
	}

	if (vector & REGAINED_BSS_EVENT_ID) {
		if (wl->psm_requested) {
			ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
			if (ret < 0)
				return ret;
		}
	}

	if (wl->vif && wl->rssi_thold) {
		if (vector & ROAMING_TRIGGER_LOW_RSSI_EVENT_ID) {
			wl1251_debug(DEBUG_EVENT,
				     "ROAMING_TRIGGER_LOW_RSSI_EVENT");
			ieee80211_cqm_rssi_notify(wl->vif,
				NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
				0, GFP_KERNEL);
		}

Annotation

Implementation Notes