142 lines
2.4 KiB
C
142 lines
2.4 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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*/
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#include <linux/module.h>
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#include "mt76.h"
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bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
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int timeout)
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{
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u32 cur;
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timeout /= 10;
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do {
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cur = __mt76_rr(dev, offset) & mask;
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if (cur == val)
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return true;
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udelay(10);
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} while (timeout-- > 0);
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return false;
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}
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EXPORT_SYMBOL_GPL(__mt76_poll);
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bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
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int timeout, int tick)
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{
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u32 cur;
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timeout /= tick;
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do {
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cur = __mt76_rr(dev, offset) & mask;
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if (cur == val)
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return true;
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usleep_range(1000 * tick, 2000 * tick);
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} while (timeout-- > 0);
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return false;
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}
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EXPORT_SYMBOL_GPL(____mt76_poll_msec);
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int mt76_wcid_alloc(u32 *mask, int size)
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{
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int i, idx = 0, cur;
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for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
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idx = ffs(~mask[i]);
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if (!idx)
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continue;
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idx--;
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cur = i * 32 + idx;
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if (cur >= size)
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break;
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mask[i] |= BIT(idx);
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return cur;
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}
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return -1;
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}
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EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
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int mt76_get_min_avg_rssi(struct mt76_dev *dev, bool ext_phy)
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{
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struct mt76_wcid *wcid;
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int i, j, min_rssi = 0;
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s8 cur_rssi;
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local_bh_disable();
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rcu_read_lock();
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for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
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u32 mask = dev->wcid_mask[i];
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u32 phy_mask = dev->wcid_phy_mask[i];
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if (!mask)
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continue;
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for (j = i * 32; mask; j++, mask >>= 1, phy_mask >>= 1) {
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if (!(mask & 1))
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continue;
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if (!!(phy_mask & 1) != ext_phy)
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continue;
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wcid = rcu_dereference(dev->wcid[j]);
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if (!wcid)
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continue;
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spin_lock(&dev->rx_lock);
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if (wcid->inactive_count++ < 5)
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cur_rssi = -ewma_signal_read(&wcid->rssi);
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else
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cur_rssi = 0;
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spin_unlock(&dev->rx_lock);
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if (cur_rssi < min_rssi)
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min_rssi = cur_rssi;
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}
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}
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rcu_read_unlock();
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local_bh_enable();
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return min_rssi;
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}
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EXPORT_SYMBOL_GPL(mt76_get_min_avg_rssi);
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int __mt76_worker_fn(void *ptr)
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{
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struct mt76_worker *w = ptr;
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while (!kthread_should_stop()) {
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set_current_state(TASK_INTERRUPTIBLE);
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if (kthread_should_park()) {
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kthread_parkme();
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continue;
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}
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if (!test_and_clear_bit(MT76_WORKER_SCHEDULED, &w->state)) {
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schedule();
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continue;
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}
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set_bit(MT76_WORKER_RUNNING, &w->state);
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set_current_state(TASK_RUNNING);
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w->fn(w);
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cond_resched();
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clear_bit(MT76_WORKER_RUNNING, &w->state);
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(__mt76_worker_fn);
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MODULE_LICENSE("Dual BSD/GPL");
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