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/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#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;
mutex_lock(&dev->mt76.mutex);
mt76x02_mac_start(dev);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work,
MT_CALIBRATE_INTERVAL);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
MT_CALIBRATE_INTERVAL);
set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
mutex_unlock(&dev->mt76.mutex);
return 0;
}
static void mt76x0e_stop_hw(struct mt76x02_dev *dev)
{
cancel_delayed_work_sync(&dev->cal_work);
cancel_delayed_work_sync(&dev->mac_work);
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;
mutex_lock(&dev->mt76.mutex);
clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
mt76x0e_stop_hw(dev);
mutex_unlock(&dev->mt76.mutex);
}
static const struct ieee80211_ops mt76x0e_ops = {
.tx = mt76x02_tx,
.start = mt76x0e_start,
.stop = mt76x0e_stop,
.config = mt76x0_config,
.add_interface = mt76x02_add_interface,
.remove_interface = mt76x02_remove_interface,
.configure_filter = mt76x02_configure_filter,
};
static int mt76x0e_register_device(struct mt76x02_dev *dev)
{
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;
err = mt76x02_dma_init(dev);
if (err < 0)
return err;
err = mt76x0_init_hardware(dev);
if (err < 0)
return err;
if (mt76_chip(&dev->mt76) == 0x7610) {
u16 val;
mt76_clear(dev, MT_COEXCFG0, BIT(0));
val = mt76x02_eeprom_get(&dev->mt76, MT_EE_NIC_CONF_0);
if (val & MT_EE_NIC_CONF_0_PA_IO_CURRENT) {
u32 data;
/* set external external PA I/O
* current to 16mA
*/
data = mt76_rr(dev, 0x11c);
val |= 0xc03;
mt76_wr(dev, 0x11c, val);
}
}
mt76_clear(dev, 0x110, BIT(9));
mt76_set(dev, MT_MAX_LEN_CFG, BIT(13));
return 0;
}
static int
mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct mt76x02_dev *dev;
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 = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (ret)
return ret;
dev = mt76x0_alloc_device(&pdev->dev, NULL, &mt76x0e_ops);
if (!dev)
return -ENOMEM;
mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
dev->mt76.rev = mt76_rr(dev, MT_ASIC_VERSION);
dev_info(dev->mt76.dev, "ASIC revision: %08x\n", dev->mt76.rev);
ret = mt76x0e_register_device(dev);
if (ret < 0)
goto error;
return 0;
error:
ieee80211_free_hw(mt76_hw(dev));
return ret;
}
static void mt76x0e_cleanup(struct mt76x02_dev *dev)
{
clear_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
mt76x0_chip_onoff(dev, false, false);
mt76x0e_stop_hw(dev);
mt76_dma_cleanup(&dev->mt76);
mt76x02_mcu_cleanup(&dev->mt76);
}
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);
ieee80211_free_hw(mdev->hw);
}
static const struct pci_device_id mt76x0e_device_table[] = {
{ PCI_DEVICE(0x14c3, 0x7630) },
{ PCI_DEVICE(0x14c3, 0x7650) },
{ },
};
MODULE_DEVICE_TABLE(pci, mt76x0e_device_table);
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,
};
module_pci_driver(mt76x0e_driver);
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