rtl8187_dev.c

来自「linux 内核源代码」· C语言 代码 · 共 827 行 · 第 1/2 页

	 * changes, as this has be seen to causes problems and the
	 * card will stop work until next reset
	 */
	rtl818x_iowrite32(priv, &priv->map->TX_CONF,
			  reg | RTL818X_TX_CONF_LOOPBACK_MAC);
	msleep(10);
	rtl8225_rf_set_channel(dev, channel);
	msleep(10);
	rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
}

static int rtl8187_start(struct ieee80211_hw *dev)
{
	struct rtl8187_priv *priv = dev->priv;
	u32 reg;
	int ret;

	ret = rtl8187_init_hw(dev);
	if (ret)
		return ret;

	rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);

	rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
	rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);

	rtl8187_init_urbs(dev);

	reg = RTL818X_RX_CONF_ONLYERLPKT |
	      RTL818X_RX_CONF_RX_AUTORESETPHY |
	      RTL818X_RX_CONF_BSSID |
	      RTL818X_RX_CONF_MGMT |
	      RTL818X_RX_CONF_DATA |
	      (7 << 13 /* RX FIFO threshold NONE */) |
	      (7 << 10 /* MAX RX DMA */) |
	      RTL818X_RX_CONF_BROADCAST |
	      RTL818X_RX_CONF_NICMAC;

	priv->rx_conf = reg;
	rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);

	reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
	reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
	reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
	rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);

	reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
	reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
	reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
	reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
	rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);

	reg  = RTL818X_TX_CONF_CW_MIN |
	       (7 << 21 /* MAX TX DMA */) |
	       RTL818X_TX_CONF_NO_ICV;
	rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);

	reg = rtl818x_ioread8(priv, &priv->map->CMD);
	reg |= RTL818X_CMD_TX_ENABLE;
	reg |= RTL818X_CMD_RX_ENABLE;
	rtl818x_iowrite8(priv, &priv->map->CMD, reg);

	return 0;
}

static void rtl8187_stop(struct ieee80211_hw *dev)
{
	struct rtl8187_priv *priv = dev->priv;
	struct rtl8187_rx_info *info;
	struct sk_buff *skb;
	u32 reg;

	rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);

	reg = rtl818x_ioread8(priv, &priv->map->CMD);
	reg &= ~RTL818X_CMD_TX_ENABLE;
	reg &= ~RTL818X_CMD_RX_ENABLE;
	rtl818x_iowrite8(priv, &priv->map->CMD, reg);

	rtl8225_rf_stop(dev);

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
	rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	while ((skb = skb_dequeue(&priv->rx_queue))) {
		info = (struct rtl8187_rx_info *)skb->cb;
		usb_kill_urb(info->urb);
		kfree_skb(skb);
	}
	return;
}

static int rtl8187_add_interface(struct ieee80211_hw *dev,
				 struct ieee80211_if_init_conf *conf)
{
	struct rtl8187_priv *priv = dev->priv;
	int i;

	if (priv->mode != IEEE80211_IF_TYPE_MNTR)
		return -EOPNOTSUPP;

	switch (conf->type) {
	case IEEE80211_IF_TYPE_STA:
		priv->mode = conf->type;
		break;
	default:
		return -EOPNOTSUPP;
	}

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	for (i = 0; i < ETH_ALEN; i++)
		rtl818x_iowrite8(priv, &priv->map->MAC[i],
				 ((u8 *)conf->mac_addr)[i]);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	return 0;
}

static void rtl8187_remove_interface(struct ieee80211_hw *dev,
				     struct ieee80211_if_init_conf *conf)
{
	struct rtl8187_priv *priv = dev->priv;
	priv->mode = IEEE80211_IF_TYPE_MNTR;
}

static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
{
	struct rtl8187_priv *priv = dev->priv;
	rtl8187_set_channel(dev, conf->channel);

	rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);

	if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
		rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
		rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
		rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
		rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
	} else {
		rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
		rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
		rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
		rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
	}

	rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
	rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
	rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
	rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
	return 0;
}

static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
				    struct ieee80211_if_conf *conf)
{
	struct rtl8187_priv *priv = dev->priv;
	int i;

	priv->if_id = if_id;

	for (i = 0; i < ETH_ALEN; i++)
		rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);

	if (is_valid_ether_addr(conf->bssid))
		rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
	else
		rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);

	return 0;
}

static void rtl8187_configure_filter(struct ieee80211_hw *dev,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     int mc_count, struct dev_addr_list *mclist)
{
	struct rtl8187_priv *priv = dev->priv;

	if (changed_flags & FIF_FCSFAIL)
		priv->rx_conf ^= RTL818X_RX_CONF_FCS;
	if (changed_flags & FIF_CONTROL)
		priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
	if (changed_flags & FIF_OTHER_BSS)
		priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
	if (*total_flags & FIF_ALLMULTI || mc_count > 0)
		priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
	else
		priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;

	*total_flags = 0;

	if (priv->rx_conf & RTL818X_RX_CONF_FCS)
		*total_flags |= FIF_FCSFAIL;
	if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
		*total_flags |= FIF_CONTROL;
	if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
		*total_flags |= FIF_OTHER_BSS;
	if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
		*total_flags |= FIF_ALLMULTI;

	rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
}

static const struct ieee80211_ops rtl8187_ops = {
	.tx			= rtl8187_tx,
	.start			= rtl8187_start,
	.stop			= rtl8187_stop,
	.add_interface		= rtl8187_add_interface,
	.remove_interface	= rtl8187_remove_interface,
	.config			= rtl8187_config,
	.config_interface	= rtl8187_config_interface,
	.configure_filter	= rtl8187_configure_filter,
};

static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
{
	struct ieee80211_hw *dev = eeprom->data;
	struct rtl8187_priv *priv = dev->priv;
	u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);

	eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
	eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
	eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
	eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
}

static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
{
	struct ieee80211_hw *dev = eeprom->data;
	struct rtl8187_priv *priv = dev->priv;
	u8 reg = RTL818X_EEPROM_CMD_PROGRAM;

	if (eeprom->reg_data_in)
		reg |= RTL818X_EEPROM_CMD_WRITE;
	if (eeprom->reg_data_out)
		reg |= RTL818X_EEPROM_CMD_READ;
	if (eeprom->reg_data_clock)
		reg |= RTL818X_EEPROM_CMD_CK;
	if (eeprom->reg_chip_select)
		reg |= RTL818X_EEPROM_CMD_CS;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
	udelay(10);
}

static int __devinit rtl8187_probe(struct usb_interface *intf,
				   const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct ieee80211_hw *dev;
	struct rtl8187_priv *priv;
	struct eeprom_93cx6 eeprom;
	struct ieee80211_channel *channel;
	u16 txpwr, reg;
	int err, i;
	DECLARE_MAC_BUF(mac);

	dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
	if (!dev) {
		printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
		return -ENOMEM;
	}

	priv = dev->priv;

	SET_IEEE80211_DEV(dev, &intf->dev);
	usb_set_intfdata(intf, dev);
	priv->udev = udev;

	usb_get_dev(udev);

	skb_queue_head_init(&priv->rx_queue);
	memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
	memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
	priv->map = (struct rtl818x_csr *)0xFF00;
	priv->modes[0].mode = MODE_IEEE80211G;
	priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
	priv->modes[0].rates = priv->rates;
	priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
	priv->modes[0].channels = priv->channels;
	priv->modes[1].mode = MODE_IEEE80211B;
	priv->modes[1].num_rates = 4;
	priv->modes[1].rates = priv->rates;
	priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
	priv->modes[1].channels = priv->channels;
	priv->mode = IEEE80211_IF_TYPE_MNTR;
	dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
		     IEEE80211_HW_RX_INCLUDES_FCS;
	dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
	dev->queues = 1;
	dev->max_rssi = 65;
	dev->max_signal = 64;

	for (i = 0; i < 2; i++)
		if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
			goto err_free_dev;

	eeprom.data = dev;
	eeprom.register_read = rtl8187_eeprom_register_read;
	eeprom.register_write = rtl8187_eeprom_register_write;
	if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
		eeprom.width = PCI_EEPROM_WIDTH_93C66;
	else
		eeprom.width = PCI_EEPROM_WIDTH_93C46;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	udelay(10);

	eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
			       (__le16 __force *)dev->wiphy->perm_addr, 3);
	if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
		printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
		       "generated MAC address\n");
		random_ether_addr(dev->wiphy->perm_addr);
	}

	channel = priv->channels;
	for (i = 0; i < 3; i++) {
		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
				  &txpwr);
		(*channel++).val = txpwr & 0xFF;
		(*channel++).val = txpwr >> 8;
	}
	for (i = 0; i < 2; i++) {
		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
				  &txpwr);
		(*channel++).val = txpwr & 0xFF;
		(*channel++).val = txpwr >> 8;
	}
	for (i = 0; i < 2; i++) {
		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
				  &txpwr);
		(*channel++).val = txpwr & 0xFF;
		(*channel++).val = txpwr >> 8;
	}

	eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
			  &priv->txpwr_base);

	reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & ~1;
	rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 1);
	/* 0 means asic B-cut, we should use SW 3 wire
	 * bit-by-bit banging for radio. 1 means we can use
	 * USB specific request to write radio registers */
	priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
	rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	rtl8225_write(dev, 0, 0x1B7);

	if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
		priv->rf_init = rtl8225_rf_init;
	else
		priv->rf_init = rtl8225z2_rf_init;

	rtl8225_write(dev, 0, 0x0B7);

	err = ieee80211_register_hw(dev);
	if (err) {
		printk(KERN_ERR "rtl8187: Cannot register device\n");
		goto err_free_dev;
	}

	printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
	       wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
	       priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
	       "rtl8225" : "rtl8225z2");

	return 0;

 err_free_dev:
	ieee80211_free_hw(dev);
	usb_set_intfdata(intf, NULL);
	usb_put_dev(udev);
	return err;
}

static void __devexit rtl8187_disconnect(struct usb_interface *intf)
{
	struct ieee80211_hw *dev = usb_get_intfdata(intf);
	struct rtl8187_priv *priv;

	if (!dev)
		return;

	ieee80211_unregister_hw(dev);

	priv = dev->priv;
	usb_put_dev(interface_to_usbdev(intf));
	ieee80211_free_hw(dev);
}

static struct usb_driver rtl8187_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= rtl8187_table,
	.probe		= rtl8187_probe,
	.disconnect	= rtl8187_disconnect,
};

static int __init rtl8187_init(void)
{
	return usb_register(&rtl8187_driver);
}

static void __exit rtl8187_exit(void)
{
	usb_deregister(&rtl8187_driver);
}

module_init(rtl8187_init);
module_exit(rtl8187_exit);