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linux/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
Felix Fietkau 17b0f68a72 wifi: mt76: change .sta_assoc callback to .sta_event 
Also report auth/disassoc events, in order to give the driver more control over
handling the station state.

Link: https://patch.msgid.link/20240827093011.18621-11-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2024-09-06 14:23:06 +02:00

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// SPDX-License-Identifier: ISC
/* Copyright (C) 2021 MediaTek Inc.
*
*/
#include <linux/kernel.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include "mt7921.h"
#include "../sdio.h"
#include "../mt76_connac2_mac.h"
#include "mcu.h"
static const struct sdio_device_id mt7921s_table[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7901),
.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
{ } /* Terminating entry */
};
static void mt7921s_txrx_worker(struct mt76_worker *w)
{
struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
txrx_worker);
struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
queue_work(mdev->wq, &dev->pm.wake_work);
return;
}
mt76s_txrx_worker(sdio);
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
}
static void mt7921s_unregister_device(struct mt792x_dev *dev)
{
struct mt76_connac_pm *pm = &dev->pm;
cancel_work_sync(&dev->init_work);
mt76_unregister_device(&dev->mt76);
cancel_delayed_work_sync(&pm->ps_work);
cancel_work_sync(&pm->wake_work);
mt76s_deinit(&dev->mt76);
mt7921s_wfsys_reset(dev);
skb_queue_purge(&dev->mt76.mcu.res_q);
mt76_free_device(&dev->mt76);
}
static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr)
{
struct mt76_sdio *sdio = &dev->sdio;
struct mt7921_sdio_intr *irq_data = sdio->intr_data;
int i, err;
sdio_claim_host(sdio->func);
err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data));
sdio_release_host(sdio->func);
if (err < 0)
return err;
if (irq_data->rx.num[0] > 16 ||
irq_data->rx.num[1] > 128)
return -EINVAL;
intr->isr = irq_data->isr;
intr->rec_mb = irq_data->rec_mb;
intr->tx.wtqcr = irq_data->tx.wtqcr;
intr->rx.num = irq_data->rx.num;
for (i = 0; i < 2 ; i++) {
if (!i)
intr->rx.len[0] = irq_data->rx.len0;
else
intr->rx.len[1] = irq_data->rx.len1;
}
return 0;
}
static int mt7921s_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
static const struct mt76_driver_ops drv_ops = {
.txwi_size = MT_SDIO_TXD_SIZE,
.drv_flags = MT_DRV_AMSDU_OFFLOAD,
.survey_flags = SURVEY_INFO_TIME_TX |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_BSS_RX,
.tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb,
.tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
.tx_status_data = mt7921_usb_sdio_tx_status_data,
.rx_skb = mt7921_queue_rx_skb,
.rx_check = mt7921_rx_check,
.sta_add = mt7921_mac_sta_add,
.sta_event = mt7921_mac_sta_event,
.sta_remove = mt7921_mac_sta_remove,
.update_survey = mt792x_update_channel,
.set_channel = mt7921_set_channel,
};
static const struct mt76_bus_ops mt7921s_ops = {
.rr = mt76s_rr,
.rmw = mt76s_rmw,
.wr = mt76s_wr,
.write_copy = mt76s_write_copy,
.read_copy = mt76s_read_copy,
.wr_rp = mt76s_wr_rp,
.rd_rp = mt76s_rd_rp,
.type = MT76_BUS_SDIO,
};
static const struct mt792x_hif_ops mt7921_sdio_ops = {
.init_reset = mt7921s_init_reset,
.reset = mt7921s_mac_reset,
.mcu_init = mt7921s_mcu_init,
.drv_own = mt7921s_mcu_drv_pmctrl,
.fw_own = mt7921s_mcu_fw_pmctrl,
};
struct ieee80211_ops *ops;
struct mt792x_dev *dev;
struct mt76_dev *mdev;
u8 features;
int ret;
ops = mt792x_get_mac80211_ops(&func->dev, &mt7921_ops,
(void *)id->driver_data, &features);
if (!ops)
return -ENOMEM;
mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops);
if (!mdev)
return -ENOMEM;
dev = container_of(mdev, struct mt792x_dev, mt76);
dev->fw_features = features;
dev->hif_ops = &mt7921_sdio_ops;
sdio_set_drvdata(func, dev);
ret = mt76s_init(mdev, func, &mt7921s_ops);
if (ret < 0)
goto error;
ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO);
if (ret)
goto error;
mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
(mt76_rr(dev, MT_HW_REV) & 0xff);
dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
mdev->sdio.parse_irq = mt7921s_parse_intr;
mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
sizeof(struct mt7921_sdio_intr),
GFP_KERNEL);
if (!mdev->sdio.intr_data) {
ret = -ENOMEM;
goto error;
}
ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN);
if (ret)
goto error;
ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU);
if (ret)
goto error;
ret = mt76s_alloc_tx(mdev);
if (ret)
goto error;
ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
mt7921s_txrx_worker, "sdio-txrx");
if (ret)
goto error;
sched_set_fifo_low(mdev->sdio.txrx_worker.task);
ret = mt7921_register_device(dev);
if (ret)
goto error;
return 0;
error:
mt76s_deinit(&dev->mt76);
mt76_free_device(&dev->mt76);
return ret;
}
static void mt7921s_remove(struct sdio_func *func)
{
struct mt792x_dev *dev = sdio_get_drvdata(func);
mt7921s_unregister_device(dev);
}
static int mt7921s_suspend(struct device *__dev)
{
struct sdio_func *func = dev_to_sdio_func(__dev);
struct mt792x_dev *dev = sdio_get_drvdata(func);
struct mt76_connac_pm *pm = &dev->pm;
struct mt76_dev *mdev = &dev->mt76;
int err;
pm->suspended = true;
set_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
flush_work(&dev->reset_work);
cancel_delayed_work_sync(&pm->ps_work);
cancel_work_sync(&pm->wake_work);
mt7921_roc_abort_sync(dev);
err = mt792x_mcu_drv_pmctrl(dev);
if (err < 0)
goto restore_suspend;
/* always enable deep sleep during suspend to reduce
* power consumption
*/
mt76_connac_mcu_set_deep_sleep(mdev, true);
mt76_txq_schedule_all(&dev->mphy);
mt76_worker_disable(&mdev->tx_worker);
mt76_worker_disable(&mdev->sdio.status_worker);
mt76_worker_disable(&mdev->sdio.stat_worker);
clear_bit(MT76_READING_STATS, &dev->mphy.state);
mt76_tx_status_check(mdev, true);
mt76_worker_schedule(&mdev->sdio.txrx_worker);
wait_event_timeout(dev->mt76.sdio.wait,
mt76s_txqs_empty(&dev->mt76), 5 * HZ);
/* It is supposed that SDIO bus is idle at the point */
err = mt76_connac_mcu_set_hif_suspend(mdev, true);
if (err)
goto restore_worker;
mt76_worker_disable(&mdev->sdio.txrx_worker);
mt76_worker_disable(&mdev->sdio.net_worker);
err = mt792x_mcu_fw_pmctrl(dev);
if (err)
goto restore_txrx_worker;
sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
return 0;
restore_txrx_worker:
mt76_worker_enable(&mdev->sdio.net_worker);
mt76_worker_enable(&mdev->sdio.txrx_worker);
mt76_connac_mcu_set_hif_suspend(mdev, false);
restore_worker:
mt76_worker_enable(&mdev->tx_worker);
mt76_worker_enable(&mdev->sdio.status_worker);
mt76_worker_enable(&mdev->sdio.stat_worker);
if (!pm->ds_enable)
mt76_connac_mcu_set_deep_sleep(mdev, false);
restore_suspend:
clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
pm->suspended = false;
if (err < 0)
mt792x_reset(&dev->mt76);
return err;
}
static int mt7921s_resume(struct device *__dev)
{
struct sdio_func *func = dev_to_sdio_func(__dev);
struct mt792x_dev *dev = sdio_get_drvdata(func);
struct mt76_connac_pm *pm = &dev->pm;
struct mt76_dev *mdev = &dev->mt76;
int err;
clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
err = mt792x_mcu_drv_pmctrl(dev);
if (err < 0)
goto failed;
mt76_worker_enable(&mdev->tx_worker);
mt76_worker_enable(&mdev->sdio.txrx_worker);
mt76_worker_enable(&mdev->sdio.status_worker);
mt76_worker_enable(&mdev->sdio.net_worker);
mt76_worker_enable(&mdev->sdio.stat_worker);
/* restore previous ds setting */
if (!pm->ds_enable)
mt76_connac_mcu_set_deep_sleep(mdev, false);
err = mt76_connac_mcu_set_hif_suspend(mdev, false);
failed:
pm->suspended = false;
if (err < 0)
mt792x_reset(&dev->mt76);
return err;
}
MODULE_DEVICE_TABLE(sdio, mt7921s_table);
MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
MODULE_FIRMWARE(MT7921_ROM_PATCH);
static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume);
static struct sdio_driver mt7921s_driver = {
.name = KBUILD_MODNAME,
.probe = mt7921s_probe,
.remove = mt7921s_remove,
.id_table = mt7921s_table,
.drv.pm = pm_sleep_ptr(&mt7921s_pm_ops),
};
module_sdio_driver(mt7921s_driver);
MODULE_DESCRIPTION("MediaTek MT7921S (SDIO) wireless driver");
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
MODULE_LICENSE("Dual BSD/GPL");
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