1 files changed, 318 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c b/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c
new file mode 100644
index 0000000000..9277ff38b7
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "mt76x0.h"
+#include "mcu.h"
+
+static int mt76x0e_start(struct ieee80211_hw *hw)
+{
+	struct mt76x02_dev *dev = hw->priv;
+
+	mt76x02_mac_start(dev);
+	mt76x0_phy_calibrate(dev, true);
+	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work,
+				     MT_MAC_WORK_INTERVAL);
+	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
+				     MT_CALIBRATE_INTERVAL);
+	set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
+
+	return 0;
+}
+
+static void mt76x0e_stop_hw(struct mt76x02_dev *dev)
+{
+	cancel_delayed_work_sync(&dev->cal_work);
+	cancel_delayed_work_sync(&dev->mphy.mac_work);
+	clear_bit(MT76_RESTART, &dev->mphy.state);
+
+	if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY,
+		       0, 1000))
+		dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
+	mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_EN);
+
+	mt76x0_mac_stop(dev);
+
+	if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_BUSY,
+		       0, 1000))
+		dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
+	mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_EN);
+}
+
+static void mt76x0e_stop(struct ieee80211_hw *hw)
+{
+	struct mt76x02_dev *dev = hw->priv;
+
+	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
+	mt76x0e_stop_hw(dev);
+}
+
+static void
+mt76x0e_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+	      u32 queues, bool drop)
+{
+}
+
+static const struct ieee80211_ops mt76x0e_ops = {
+	.tx = mt76x02_tx,
+	.start = mt76x0e_start,
+	.stop = mt76x0e_stop,
+	.add_interface = mt76x02_add_interface,
+	.remove_interface = mt76x02_remove_interface,
+	.config = mt76x0_config,
+	.configure_filter = mt76x02_configure_filter,
+	.bss_info_changed = mt76x02_bss_info_changed,
+	.sta_state = mt76_sta_state,
+	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
+	.set_key = mt76x02_set_key,
+	.conf_tx = mt76x02_conf_tx,
+	.sw_scan_start = mt76_sw_scan,
+	.sw_scan_complete = mt76x02_sw_scan_complete,
+	.ampdu_action = mt76x02_ampdu_action,
+	.sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
+	.wake_tx_queue = mt76_wake_tx_queue,
+	.get_survey = mt76_get_survey,
+	.get_txpower = mt76_get_txpower,
+	.flush = mt76x0e_flush,
+	.set_tim = mt76_set_tim,
+	.release_buffered_frames = mt76_release_buffered_frames,
+	.set_coverage_class = mt76x02_set_coverage_class,
+	.set_rts_threshold = mt76x02_set_rts_threshold,
+	.get_antenna = mt76_get_antenna,
+	.reconfig_complete = mt76x02_reconfig_complete,
+	.set_sar_specs = mt76x0_set_sar_specs,
+};
+
+static int mt76x0e_init_hardware(struct mt76x02_dev *dev, bool resume)
+{
+	int err;
+
+	mt76x0_chip_onoff(dev, true, false);
+	if (!mt76x02_wait_for_mac(&dev->mt76))
+		return -ETIMEDOUT;
+
+	mt76x02_dma_disable(dev);
+	err = mt76x0e_mcu_init(dev);
+	if (err < 0)
+		return err;
+
+	if (!resume) {
+		err = mt76x02_dma_init(dev);
+		if (err < 0)
+			return err;
+	}
+
+	err = mt76x0_init_hardware(dev);
+	if (err < 0)
+		return err;
+
+	mt76x02e_init_beacon_config(dev);
+
+	if (mt76_chip(&dev->mt76) == 0x7610) {
+		u16 val;
+
+		mt76_clear(dev, MT_COEXCFG0, BIT(0));
+
+		val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
+		if (!(val & MT_EE_NIC_CONF_0_PA_IO_CURRENT))
+			mt76_set(dev, MT_XO_CTRL7, 0xc03);
+	}
+
+	mt76_clear(dev, 0x110, BIT(9));
+	mt76_set(dev, MT_MAX_LEN_CFG, BIT(13));
+
+	return 0;
+}
+
+static int mt76x0e_register_device(struct mt76x02_dev *dev)
+{
+	int err;
+
+	err = mt76x0e_init_hardware(dev, false);
+	if (err < 0)
+		return err;
+
+	err = mt76x0_register_device(dev);
+	if (err < 0)
+		return err;
+
+	set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
+
+	return 0;
+}
+
+static int
+mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	static const struct mt76_driver_ops drv_ops = {
+		.txwi_size = sizeof(struct mt76x02_txwi),
+		.drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
+			     MT_DRV_SW_RX_AIRTIME,
+		.survey_flags = SURVEY_INFO_TIME_TX,
+		.update_survey = mt76x02_update_channel,
+		.tx_prepare_skb = mt76x02_tx_prepare_skb,
+		.tx_complete_skb = mt76x02_tx_complete_skb,
+		.rx_skb = mt76x02_queue_rx_skb,
+		.rx_poll_complete = mt76x02_rx_poll_complete,
+		.sta_ps = mt76x02_sta_ps,
+		.sta_add = mt76x02_sta_add,
+		.sta_remove = mt76x02_sta_remove,
+	};
+	struct mt76x02_dev *dev;
+	struct mt76_dev *mdev;
+	int ret;
+
+	ret = pcim_enable_device(pdev);
+	if (ret)
+		return ret;
+
+	ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
+	if (ret)
+		return ret;
+
+	pci_set_master(pdev);
+
+	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	mt76_pci_disable_aspm(pdev);
+
+	mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x0e_ops,
+				 &drv_ops);
+	if (!mdev)
+		return -ENOMEM;
+
+	dev = container_of(mdev, struct mt76x02_dev, mt76);
+	mutex_init(&dev->phy_mutex);
+
+	mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
+
+	mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
+	dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
+
+	mt76_wr(dev, MT_INT_MASK_CSR, 0);
+
+	ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
+			       IRQF_SHARED, KBUILD_MODNAME, dev);
+	if (ret)
+		goto error;
+
+	ret = mt76x0e_register_device(dev);
+	if (ret < 0)
+		goto error;
+
+	return 0;
+
+error:
+	mt76_free_device(&dev->mt76);
+
+	return ret;
+}
+
+static void mt76x0e_cleanup(struct mt76x02_dev *dev)
+{
+	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
+	tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
+	mt76x0_chip_onoff(dev, false, false);
+	mt76x0e_stop_hw(dev);
+	mt76_dma_cleanup(&dev->mt76);
+	mt76x02_mcu_cleanup(dev);
+}
+
+static void
+mt76x0e_remove(struct pci_dev *pdev)
+{
+	struct mt76_dev *mdev = pci_get_drvdata(pdev);
+	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
+
+	mt76_unregister_device(mdev);
+	mt76x0e_cleanup(dev);
+	mt76_free_device(mdev);
+}
+
+#ifdef CONFIG_PM
+static int mt76x0e_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct mt76_dev *mdev = pci_get_drvdata(pdev);
+	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
+	int i;
+
+	mt76_worker_disable(&mdev->tx_worker);
+	for (i = 0; i < ARRAY_SIZE(mdev->phy.q_tx); i++)
+		mt76_queue_tx_cleanup(dev, mdev->phy.q_tx[i], true);
+	for (i = 0; i < ARRAY_SIZE(mdev->q_mcu); i++)
+		mt76_queue_tx_cleanup(dev, mdev->q_mcu[i], true);
+	napi_disable(&mdev->tx_napi);
+
+	mt76_for_each_q_rx(mdev, i)
+		napi_disable(&mdev->napi[i]);
+
+	mt76x02_dma_disable(dev);
+	mt76x02_mcu_cleanup(dev);
+	mt76x0_chip_onoff(dev, false, false);
+
+	pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
+	pci_save_state(pdev);
+
+	return pci_set_power_state(pdev, pci_choose_state(pdev, state));
+}
+
+static int mt76x0e_resume(struct pci_dev *pdev)
+{
+	struct mt76_dev *mdev = pci_get_drvdata(pdev);
+	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
+	int err, i;
+
+	err = pci_set_power_state(pdev, PCI_D0);
+	if (err)
+		return err;
+
+	pci_restore_state(pdev);
+
+	mt76_worker_enable(&mdev->tx_worker);
+
+	local_bh_disable();
+	mt76_for_each_q_rx(mdev, i) {
+		mt76_queue_rx_reset(dev, i);
+		napi_enable(&mdev->napi[i]);
+		napi_schedule(&mdev->napi[i]);
+	}
+
+	napi_enable(&mdev->tx_napi);
+	napi_schedule(&mdev->tx_napi);
+	local_bh_enable();
+
+	return mt76x0e_init_hardware(dev, true);
+}
+#endif /* CONFIG_PM */
+
+static const struct pci_device_id mt76x0e_device_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7610) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7630) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7650) },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(pci, mt76x0e_device_table);
+MODULE_FIRMWARE(MT7610E_FIRMWARE);
+MODULE_FIRMWARE(MT7650E_FIRMWARE);
+MODULE_LICENSE("Dual BSD/GPL");
+
+static struct pci_driver mt76x0e_driver = {
+	.name		= KBUILD_MODNAME,
+	.id_table	= mt76x0e_device_table,
+	.probe		= mt76x0e_probe,
+	.remove		= mt76x0e_remove,
+#ifdef CONFIG_PM
+	.suspend	= mt76x0e_suspend,
+	.resume		= mt76x0e_resume,
+#endif /* CONFIG_PM */
+};
+
+module_pci_driver(mt76x0e_driver);