diff options
Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8187_dev.c')
| -rw-r--r-- | drivers/net/wireless/rtl818x/rtl8187_dev.c | 1496 |
1 files changed, 1496 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8187_dev.c b/drivers/net/wireless/rtl818x/rtl8187_dev.c new file mode 100644 index 0000000..00ce3ef --- /dev/null +++ b/drivers/net/wireless/rtl818x/rtl8187_dev.c @@ -0,0 +1,1496 @@ +/* + * Linux device driver for RTL8187 + * + * Copyright 2007 Michael Wu <flamingice@sourmilk.net> + * Copyright 2007 Andrea Merello <andreamrl@tiscali.it> + * + * Based on the r8187 driver, which is: + * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al. + * + * The driver was extended to the RTL8187B in 2008 by: + * Herton Ronaldo Krzesinski <herton@mandriva.com.br> + * Hin-Tak Leung <htl10@users.sourceforge.net> + * Larry Finger <Larry.Finger@lwfinger.net> + * + * Magic delays and register offsets below are taken from the original + * r8187 driver sources. Thanks to Realtek for their support! + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/delay.h> +#include <linux/etherdevice.h> +#include <linux/eeprom_93cx6.h> +#include <net/mac80211.h> + +#include "rtl8187.h" +#include "rtl8187_rtl8225.h" + +MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); +MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>"); +MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>"); +MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>"); +MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>"); +MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver"); +MODULE_LICENSE("GPL"); + +static struct usb_device_id rtl8187_table[] __devinitdata = { + /* Asus */ + {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187}, + /* Belkin */ + {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B}, + /* Realtek */ + {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187}, + {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B}, + {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B}, + {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B}, + /* Netgear */ + {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187}, + {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187}, + {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B}, + /* HP */ + {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187}, + /* Sitecom */ + {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187}, + {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B}, + /* Abocom */ + {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187}, + {} +}; + +MODULE_DEVICE_TABLE(usb, rtl8187_table); + +static const struct ieee80211_rate rtl818x_rates[] = { + { .bitrate = 10, .hw_value = 0, }, + { .bitrate = 20, .hw_value = 1, }, + { .bitrate = 55, .hw_value = 2, }, + { .bitrate = 110, .hw_value = 3, }, + { .bitrate = 60, .hw_value = 4, }, + { .bitrate = 90, .hw_value = 5, }, + { .bitrate = 120, .hw_value = 6, }, + { .bitrate = 180, .hw_value = 7, }, + { .bitrate = 240, .hw_value = 8, }, + { .bitrate = 360, .hw_value = 9, }, + { .bitrate = 480, .hw_value = 10, }, + { .bitrate = 540, .hw_value = 11, }, +}; + +static const struct ieee80211_channel rtl818x_channels[] = { + { .center_freq = 2412 }, + { .center_freq = 2417 }, + { .center_freq = 2422 }, + { .center_freq = 2427 }, + { .center_freq = 2432 }, + { .center_freq = 2437 }, + { .center_freq = 2442 }, + { .center_freq = 2447 }, + { .center_freq = 2452 }, + { .center_freq = 2457 }, + { .center_freq = 2462 }, + { .center_freq = 2467 }, + { .center_freq = 2472 }, + { .center_freq = 2484 }, +}; + +static void rtl8187_iowrite_async_cb(struct urb *urb) +{ + kfree(urb->context); +} + +static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr, + void *data, u16 len) +{ + struct usb_ctrlrequest *dr; + struct urb *urb; + struct rtl8187_async_write_data { + u8 data[4]; + struct usb_ctrlrequest dr; + } *buf; + int rc; + + buf = kmalloc(sizeof(*buf), GFP_ATOMIC); + if (!buf) + return; + + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) { + kfree(buf); + return; + } + + dr = &buf->dr; + + dr->bRequestType = RTL8187_REQT_WRITE; + dr->bRequest = RTL8187_REQ_SET_REG; + dr->wValue = addr; + dr->wIndex = 0; + dr->wLength = cpu_to_le16(len); + + memcpy(buf, data, len); + + usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0), + (unsigned char *)dr, buf, len, + rtl8187_iowrite_async_cb, buf); + usb_anchor_urb(urb, &priv->anchored); + rc = usb_submit_urb(urb, GFP_ATOMIC); + if (rc < 0) { + kfree(buf); + usb_unanchor_urb(urb); + } + usb_free_urb(urb); +} + +static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv, + __le32 *addr, u32 val) +{ + __le32 buf = cpu_to_le32(val); + + rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr), + &buf, sizeof(buf)); +} + +void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data) +{ + struct rtl8187_priv *priv = dev->priv; + + data <<= 8; + data |= addr | 0x80; + + rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF); + rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF); + rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF); + rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF); +} + +static void rtl8187_tx_cb(struct urb *urb) +{ + struct sk_buff *skb = (struct sk_buff *)urb->context; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_hw *hw = info->rate_driver_data[0]; + struct rtl8187_priv *priv = hw->priv; + + skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) : + sizeof(struct rtl8187_tx_hdr)); + ieee80211_tx_info_clear_status(info); + + if (!urb->status && + !(info->flags & IEEE80211_TX_CTL_NO_ACK) && + priv->is_rtl8187b) { + skb_queue_tail(&priv->b_tx_status.queue, skb); + + /* queue is "full", discard last items */ + while (skb_queue_len(&priv->b_tx_status.queue) > 5) { + struct sk_buff *old_skb; + + dev_dbg(&priv->udev->dev, + "transmit status queue full\n"); + + old_skb = skb_dequeue(&priv->b_tx_status.queue); + ieee80211_tx_status_irqsafe(hw, old_skb); + } + } else { + if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !urb->status) + info->flags |= IEEE80211_TX_STAT_ACK; + ieee80211_tx_status_irqsafe(hw, skb); + } +} + +static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb) +{ + struct rtl8187_priv *priv = dev->priv; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + unsigned int ep; + void *buf; + struct urb *urb; + __le16 rts_dur = 0; + u32 flags; + int rc; + + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) { + kfree_skb(skb); + return -ENOMEM; + } + + flags = skb->len; + flags |= RTL818X_TX_DESC_FLAG_NO_ENC; + + flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24; + if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control)) + flags |= RTL818X_TX_DESC_FLAG_MOREFRAG; + if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { + flags |= RTL818X_TX_DESC_FLAG_RTS; + flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; + rts_dur = ieee80211_rts_duration(dev, priv->vif, + skb->len, info); + } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { + flags |= RTL818X_TX_DESC_FLAG_CTS; + flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; + } + + if (!priv->is_rtl8187b) { + struct rtl8187_tx_hdr *hdr = + (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr)); + hdr->flags = cpu_to_le32(flags); + hdr->len = 0; + hdr->rts_duration = rts_dur; + hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8); + buf = hdr; + + ep = 2; + } else { + /* fc needs to be calculated before skb_push() */ + unsigned int epmap[4] = { 6, 7, 5, 4 }; + struct ieee80211_hdr *tx_hdr = + (struct ieee80211_hdr *)(skb->data); + u16 fc = le16_to_cpu(tx_hdr->frame_control); + + struct rtl8187b_tx_hdr *hdr = + (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr)); + struct ieee80211_rate *txrate = + ieee80211_get_tx_rate(dev, info); + memset(hdr, 0, sizeof(*hdr)); + hdr->flags = cpu_to_le32(flags); + hdr->rts_duration = rts_dur; + hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8); + hdr->tx_duration = + ieee80211_generic_frame_duration(dev, priv->vif, + skb->len, txrate); + buf = hdr; + + if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) + ep = 12; + else + ep = epmap[skb_get_queue_mapping(skb)]; + } + + info->rate_driver_data[0] = dev; + info->rate_driver_data[1] = urb; + + usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep), + buf, skb->len, rtl8187_tx_cb, skb); + usb_anchor_urb(urb, &priv->anchored); + rc = usb_submit_urb(urb, GFP_ATOMIC); + if (rc < 0) { + usb_unanchor_urb(urb); + kfree_skb(skb); + } + usb_free_urb(urb); + + return rc; +} + +static void rtl8187_rx_cb(struct urb *urb) +{ + struct sk_buff *skb = (struct sk_buff *)urb->context; + struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb; + struct ieee80211_hw *dev = info->dev; + struct rtl8187_priv *priv = dev->priv; + struct ieee80211_rx_status rx_status = { 0 }; + int rate, signal; + u32 flags; + u32 quality; + unsigned long f; + + spin_lock_irqsave(&priv->rx_queue.lock, f); + if (skb->next) + __skb_unlink(skb, &priv->rx_queue); + else { + spin_unlock_irqrestore(&priv->rx_queue.lock, f); + return; + } + spin_unlock_irqrestore(&priv->rx_queue.lock, f); + skb_put(skb, urb->actual_length); + + if (unlikely(urb->status)) { + dev_kfree_skb_irq(skb); + return; + } + + if (!priv->is_rtl8187b) { + struct rtl8187_rx_hdr *hdr = + (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr)); + flags = le32_to_cpu(hdr->flags); + /* As with the RTL8187B below, the AGC is used to calculate + * signal strength and quality. In this case, the scaling + * constants are derived from the output of p54usb. + */ + quality = 130 - ((41 * hdr->agc) >> 6); + signal = -4 - ((27 * hdr->agc) >> 6); + rx_status.antenna = (hdr->signal >> 7) & 1; + rx_status.mactime = le64_to_cpu(hdr->mac_time); + } else { + struct rtl8187b_rx_hdr *hdr = + (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr)); + /* The Realtek datasheet for the RTL8187B shows that the RX + * header contains the following quantities: signal quality, + * RSSI, AGC, the received power in dB, and the measured SNR. + * In testing, none of these quantities show qualitative + * agreement with AP signal strength, except for the AGC, + * which is inversely proportional to the strength of the + * signal. In the following, the quality and signal strength + * are derived from the AGC. The arbitrary scaling constants + * are chosen to make the results close to the values obtained + * for a BCM4312 using b43 as the driver. The noise is ignored + * for now. + */ + flags = le32_to_cpu(hdr->flags); + quality = 170 - hdr->agc; + signal = 14 - hdr->agc / 2; + rx_status.antenna = (hdr->rssi >> 7) & 1; + rx_status.mactime = le64_to_cpu(hdr->mac_time); + } + + if (quality > 100) + quality = 100; + rx_status.qual = quality; + priv->quality = quality; + rx_status.signal = signal; + priv->signal = signal; + rate = (flags >> 20) & 0xF; + skb_trim(skb, flags & 0x0FFF); + rx_status.rate_idx = rate; + rx_status.freq = dev->conf.channel->center_freq; + rx_status.band = dev->conf.channel->band; + rx_status.flag |= RX_FLAG_TSFT; + if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR) + rx_status.flag |= RX_FLAG_FAILED_FCS_CRC; + ieee80211_rx_irqsafe(dev, skb, &rx_status); + + skb = dev_alloc_skb(RTL8187_MAX_RX); + if (unlikely(!skb)) { + /* TODO check rx queue length and refill *somewhere* */ + return; + } + + info = (struct rtl8187_rx_info *)skb->cb; + info->urb = urb; + info->dev = dev; + urb->transfer_buffer = skb_tail_pointer(skb); + urb->context = skb; + skb_queue_tail(&priv->rx_queue, skb); + + usb_anchor_urb(urb, &priv->anchored); + if (usb_submit_urb(urb, GFP_ATOMIC)) { + usb_unanchor_urb(urb); + skb_unlink(skb, &priv->rx_queue); + dev_kfree_skb_irq(skb); + } +} + +static int rtl8187_init_urbs(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + struct urb *entry = NULL; + struct sk_buff *skb; + struct rtl8187_rx_info *info; + int ret = 0; + + while (skb_queue_len(&priv->rx_queue) < 8) { + skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL); + if (!skb) { + ret = -ENOMEM; + goto err; + } + entry = usb_alloc_urb(0, GFP_KERNEL); + if (!entry) { + ret = -ENOMEM; + goto err; + } + usb_fill_bulk_urb(entry, priv->udev, + usb_rcvbulkpipe(priv->udev, + priv->is_rtl8187b ? 3 : 1), + skb_tail_pointer(skb), + RTL8187_MAX_RX, rtl8187_rx_cb, skb); + info = (struct rtl8187_rx_info *)skb->cb; + info->urb = entry; + info->dev = dev; + skb_queue_tail(&priv->rx_queue, skb); + usb_anchor_urb(entry, &priv->anchored); + ret = usb_submit_urb(entry, GFP_KERNEL); + if (ret) { + skb_unlink(skb, &priv->rx_queue); + usb_unanchor_urb(entry); + goto err; + } + usb_free_urb(entry); + } + return ret; + +err: + usb_free_urb(entry); + kfree_skb(skb); + usb_kill_anchored_urbs(&priv->anchored); + return ret; +} + +static void rtl8187b_status_cb(struct urb *urb) +{ + struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context; + struct rtl8187_priv *priv = hw->priv; + u64 val; + unsigned int cmd_type; + + if (unlikely(urb->status)) + return; + + /* + * Read from status buffer: + * + * bits [30:31] = cmd type: + * - 0 indicates tx beacon interrupt + * - 1 indicates tx close descriptor + * + * In the case of tx beacon interrupt: + * [0:9] = Last Beacon CW + * [10:29] = reserved + * [30:31] = 00b + * [32:63] = Last Beacon TSF + * + * If it's tx close descriptor: + * [0:7] = Packet Retry Count + * [8:14] = RTS Retry Count + * [15] = TOK + * [16:27] = Sequence No + * [28] = LS + * [29] = FS + * [30:31] = 01b + * [32:47] = unused (reserved?) + * [48:63] = MAC Used Time + */ + val = le64_to_cpu(priv->b_tx_status.buf); + + cmd_type = (val >> 30) & 0x3; + if (cmd_type == 1) { + unsigned int pkt_rc, seq_no; + bool tok; + struct sk_buff *skb; + struct ieee80211_hdr *ieee80211hdr; + unsigned long flags; + + pkt_rc = val & 0xFF; + tok = val & (1 << 15); + seq_no = (val >> 16) & 0xFFF; + + spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags); + skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) { + ieee80211hdr = (struct ieee80211_hdr *)skb->data; + + /* + * While testing, it was discovered that the seq_no + * doesn't actually contains the sequence number. + * Instead of returning just the 12 bits of sequence + * number, hardware is returning entire sequence control + * (fragment number plus sequence number) in a 12 bit + * only field overflowing after some time. As a + * workaround, just consider the lower bits, and expect + * it's unlikely we wrongly ack some sent data + */ + if ((le16_to_cpu(ieee80211hdr->seq_ctrl) + & 0xFFF) == seq_no) + break; + } + if (skb != (struct sk_buff *) &priv->b_tx_status.queue) { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + + __skb_unlink(skb, &priv->b_tx_status.queue); + if (tok) + info->flags |= IEEE80211_TX_STAT_ACK; + info->status.rates[0].count = pkt_rc + 1; + + ieee80211_tx_status_irqsafe(hw, skb); + } + spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags); + } + + usb_anchor_urb(urb, &priv->anchored); + if (usb_submit_urb(urb, GFP_ATOMIC)) + usb_unanchor_urb(urb); +} + +static int rtl8187b_init_status_urb(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + struct urb *entry; + int ret = 0; + + entry = usb_alloc_urb(0, GFP_KERNEL); + if (!entry) + return -ENOMEM; + + usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9), + &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf), + rtl8187b_status_cb, dev); + + usb_anchor_urb(entry, &priv->anchored); + ret = usb_submit_urb(entry, GFP_KERNEL); + if (ret) + usb_unanchor_urb(entry); + usb_free_urb(entry); + + return ret; +} + +static int rtl8187_cmd_reset(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + u8 reg; + int i; + + reg = rtl818x_ioread8(priv, &priv->map->CMD); + reg &= (1 << 1); + reg |= RTL818X_CMD_RESET; + rtl818x_iowrite8(priv, &priv->map->CMD, reg); + + i = 10; + do { + msleep(2); + if (!(rtl818x_ioread8(priv, &priv->map->CMD) & + RTL818X_CMD_RESET)) + break; + } while (--i); + + if (!i) { + printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy)); + return -ETIMEDOUT; + } + + /* reload registers from eeprom */ + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD); + + i = 10; + do { + msleep(4); + if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) & + RTL818X_EEPROM_CMD_CONFIG)) + break; + } while (--i); + + if (!i) { + printk(KERN_ERR "%s: eeprom reset timeout!\n", + wiphy_name(dev->wiphy)); + return -ETIMEDOUT; + } + + return 0; +} + +static int rtl8187_init_hw(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + u8 reg; + int res; + + /* reset */ + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_CONFIG); + reg = rtl818x_ioread8(priv, &priv->map->CONFIG3); + rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | + RTL818X_CONFIG3_ANAPARAM_WRITE); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM, + RTL8187_RTL8225_ANAPARAM_ON); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, + RTL8187_RTL8225_ANAPARAM2_ON); + rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & + ~RTL818X_CONFIG3_ANAPARAM_WRITE); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_NORMAL); + + rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0); + + msleep(200); + rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10); + rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11); + rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00); + msleep(200); + + res = rtl8187_cmd_reset(dev); + if (res) + return res; + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG); + reg = rtl818x_ioread8(priv, &priv->map->CONFIG3); + rtl818x_iowrite8(priv, &priv->map->CONFIG3, + reg | RTL818X_CONFIG3_ANAPARAM_WRITE); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM, + RTL8187_RTL8225_ANAPARAM_ON); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, + RTL8187_RTL8225_ANAPARAM2_ON); + rtl818x_iowrite8(priv, &priv->map->CONFIG3, + reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL); + + /* setup card */ + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0); + rtl818x_iowrite8(priv, &priv->map->GPIO, 0); + + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8)); + rtl818x_iowrite8(priv, &priv->map->GPIO, 1); + rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0); + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG); + + rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF); + reg = rtl818x_ioread8(priv, &priv->map->CONFIG1); + reg &= 0x3F; + reg |= 0x80; + rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg); + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL); + + rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0); + rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0); + rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81); + + // TODO: set RESP_RATE and BRSR properly + rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0); + rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3); + + /* host_usb_init */ + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0); + rtl818x_iowrite8(priv, &priv->map->GPIO, 0); + reg = rtl818x_ioread8(priv, (u8 *)0xFE53); + rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7)); + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8)); + rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20); + rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0); + rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80); + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80); + rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80); + msleep(100); + + rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008); + rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF); + rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_CONFIG); + rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_NORMAL); + rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7); + msleep(100); + + priv->rf->init(dev); + + rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3); + reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1; + rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1); + rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10); + rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80); + rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60); + rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg); + + return 0; +} + +static const u8 rtl8187b_reg_table[][3] = { + {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0}, + {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0}, + {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0}, + {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0}, + + {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1}, + {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1}, + {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1}, + {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1}, + {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1}, + {0xF7, 0x07, 1}, {0xF8, 0x08, 1}, + + {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2}, + {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2}, + {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2}, + {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2}, + {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2}, + {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2}, + {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2}, + {0x73, 0x9A, 2}, + + {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0}, + {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0}, + {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0}, + {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0}, + {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0}, + + {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, + {0x8E, 0x08, 0}, {0x8F, 0x00, 0} +}; + +static int rtl8187b_init_hw(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + int res, i; + u8 reg; + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_CONFIG); + + reg = rtl818x_ioread8(priv, &priv->map->CONFIG3); + reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT; + rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, + RTL8187B_RTL8225_ANAPARAM2_ON); + rtl818x_iowrite32(priv, &priv->map->ANAPARAM, + RTL8187B_RTL8225_ANAPARAM_ON); + rtl818x_iowrite8(priv, &priv->map->ANAPARAM3, + RTL8187B_RTL8225_ANAPARAM3_ON); + + rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10); + reg = rtl818x_ioread8(priv, (u8 *)0xFF62); + rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5)); + rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5)); + + reg = rtl818x_ioread8(priv, &priv->map->CONFIG3); + reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE; + rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg); + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_NORMAL); + + res = rtl8187_cmd_reset(dev); + if (res) + return res; + + rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF); + reg = rtl818x_ioread8(priv, &priv->map->CW_CONF); + 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 | + RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT; + rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg); + + rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1); + reg = rtl818x_ioread8(priv, &priv->map->RATE_FALLBACK); + reg |= RTL818X_RATE_FALLBACK_ENABLE; + rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, reg); + + rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100); + rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1); + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_CONFIG); + reg = rtl818x_ioread8(priv, &priv->map->CONFIG1); + rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_NORMAL); + + rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0); + for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) { + rtl818x_iowrite8_idx(priv, + (u8 *)(uintptr_t) + (rtl8187b_reg_table[i][0] | 0xFF00), + rtl8187b_reg_table[i][1], + rtl8187b_reg_table[i][2]); + } + + rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50); + rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0); + + rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1); + rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1); + rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1); + + rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001); + + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2); + + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_CONFIG); + reg = rtl818x_ioread8(priv, &priv->map->CONFIG3); + reg |= RTL818X_CONFIG3_ANAPARAM_WRITE; + rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, + RTL818X_EEPROM_CMD_NORMAL); + + rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480); + rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488); + rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF); + msleep(100); + + priv->rf->init(dev); + + reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE; + rtl818x_iowrite8(priv, &priv->map->CMD, reg); + rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF); + + rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4); + rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00); + rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00); + rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01); + rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F); + rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00); + rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01); + + reg = rtl818x_ioread8(priv, (u8 *)0xFFDB); + rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2)); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3); + rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3); + rtl818x_iowrite8(priv, (u8 *)0xFF61, 0); + rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1); + rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1); + rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10); + rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2); + + rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B); + + rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1); + + priv->slot_time = 0x9; + priv->aifsn[0] = 2; /* AIFSN[AC_VO] */ + priv->aifsn[1] = 2; /* AIFSN[AC_VI] */ + priv->aifsn[2] = 7; /* AIFSN[AC_BK] */ + priv->aifsn[3] = 3; /* AIFSN[AC_BE] */ + rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0); + + return 0; +} + +static int rtl8187_start(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + u32 reg; + int ret; + + ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) : + rtl8187b_init_hw(dev); + if (ret) + return ret; + + mutex_lock(&priv->conf_mutex); + + init_usb_anchor(&priv->anchored); + + if (priv->is_rtl8187b) { + reg = RTL818X_RX_CONF_MGMT | + RTL818X_RX_CONF_DATA | + RTL818X_RX_CONF_BROADCAST | + RTL818X_RX_CONF_NICMAC | + RTL818X_RX_CONF_BSSID | + (7 << 13 /* RX FIFO threshold NONE */) | + (7 << 10 /* MAX RX DMA */) | + RTL818X_RX_CONF_RX_AUTORESETPHY | + RTL818X_RX_CONF_ONLYERLPKT | + RTL818X_RX_CONF_MULTICAST; + priv->rx_conf = reg; + rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg); + + rtl818x_iowrite32(priv, &priv->map->TX_CONF, + RTL818X_TX_CONF_HW_SEQNUM | + RTL818X_TX_CONF_DISREQQSIZE | + (7 << 8 /* short retry limit */) | + (7 << 0 /* long retry limit */) | + (7 << 21 /* MAX TX DMA */)); + rtl8187_init_urbs(dev); + rtl8187b_init_status_urb(dev); + mutex_unlock(&priv->conf_mutex); + return 0; + } + + 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); + mutex_unlock(&priv->conf_mutex); + + return 0; +} + +static void rtl8187_stop(struct ieee80211_hw *dev) +{ + struct rtl8187_priv *priv = dev->priv; + struct sk_buff *skb; + u32 reg; + + mutex_lock(&priv->conf_mutex); + 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); + + priv->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->b_tx_status.queue))) + dev_kfree_skb_any(skb); + + usb_kill_anchored_urbs(&priv->anchored); + mutex_unlock(&priv->conf_mutex); +} + +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 != NL80211_IFTYPE_MONITOR) + return -EOPNOTSUPP; + + switch (conf->type) { + case NL80211_IFTYPE_STATION: + priv->mode = conf->type; + break; + default: + return -EOPNOTSUPP; + } + + mutex_lock(&priv->conf_mutex); + priv->vif = conf->vif; + + 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); + + mutex_unlock(&priv->conf_mutex); + return 0; +} + +static void rtl8187_remove_interface(struct ieee80211_hw *dev, + struct ieee80211_if_init_conf *conf) +{ + struct rtl8187_priv *priv = dev->priv; + mutex_lock(&priv->conf_mutex); + priv->mode = NL80211_IFTYPE_MONITOR; + priv->vif = NULL; + mutex_unlock(&priv->conf_mutex); +} + +static int rtl8187_config(struct ieee80211_hw *dev, u32 changed) +{ + struct rtl8187_priv *priv = dev->priv; + struct ieee80211_conf *conf = &dev->conf; + u32 reg; + + mutex_lock(&priv->conf_mutex); + reg = rtl818x_ioread32(priv, &priv->map->TX_CONF); + /* Enable TX loopback on MAC level to avoid TX during channel + * 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); + priv->rf->set_chan(dev, conf); + msleep(10); + rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg); + + 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); + mutex_unlock(&priv->conf_mutex); + return 0; +} + +static int rtl8187_config_interface(struct ieee80211_hw *dev, + struct ieee80211_vif *vif, + struct ieee80211_if_conf *conf) +{ + struct rtl8187_priv *priv = dev->priv; + int i; + u8 reg; + + mutex_lock(&priv->conf_mutex); + for (i = 0; i < ETH_ALEN; i++) + rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]); + + if (is_valid_ether_addr(conf->bssid)) { + reg = RTL818X_MSR_INFRA; + if (priv->is_rtl8187b) + reg |= RTL818X_MSR_ENEDCA; + rtl818x_iowrite8(priv, &priv->map->MSR, reg); + } else { + reg = RTL818X_MSR_NO_LINK; + rtl818x_iowrite8(priv, &priv->map->MSR, reg); + } + + mutex_unlock(&priv->conf_mutex); + return 0; +} + +/* + * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for + * example. Thus we have to use raw values for AC_*_PARAM register addresses. + */ +static __le32 *rtl8187b_ac_addr[4] = { + (__le32 *) 0xFFF0, /* AC_VO */ + (__le32 *) 0xFFF4, /* AC_VI */ + (__le32 *) 0xFFFC, /* AC_BK */ + (__le32 *) 0xFFF8, /* AC_BE */ +}; + +#define SIFS_TIME 0xa + +static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot, + bool use_short_preamble) +{ + if (priv->is_rtl8187b) { + u8 difs, eifs; + u16 ack_timeout; + int queue; + + if (use_short_slot) { + priv->slot_time = 0x9; + difs = 0x1c; + eifs = 0x53; + } else { + priv->slot_time = 0x14; + difs = 0x32; + eifs = 0x5b; + } + rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22); + rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time); + rtl818x_iowrite8(priv, &priv->map->DIFS, difs); + + /* + * BRSR+1 on 8187B is in fact EIFS register + * Value in units of 4 us + */ + rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs); + + /* + * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout + * register. In units of 4 us like eifs register + * ack_timeout = ack duration + plcp + difs + preamble + */ + ack_timeout = 112 + 48 + difs; + if (use_short_preamble) + ack_timeout += 72; + else + ack_timeout += 144; + rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, + DIV_ROUND_UP(ack_timeout, 4)); + + for (queue = 0; queue < 4; queue++) + rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue], + priv->aifsn[queue] * priv->slot_time + + SIFS_TIME); + } else { + rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22); + if (use_short_slot) { + rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9); + rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14); + rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14); + } else { + rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14); + rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24); + rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24); + } + } +} + +static void rtl8187_bss_info_changed(struct ieee80211_hw *dev, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, + u32 changed) +{ + struct rtl8187_priv *priv = dev->priv; + + if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE)) + rtl8187_conf_erp(priv, info->use_short_slot, + info->use_short_preamble); +} + +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 int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct rtl8187_priv *priv = dev->priv; + u8 cw_min, cw_max; + + if (queue > 3) + return -EINVAL; + + cw_min = fls(params->cw_min); + cw_max = fls(params->cw_max); + + if (priv->is_rtl8187b) { + priv->aifsn[queue] = params->aifs; + + /* + * This is the structure of AC_*_PARAM registers in 8187B: + * - TXOP limit field, bit offset = 16 + * - ECWmax, bit offset = 12 + * - ECWmin, bit offset = 8 + * - AIFS, bit offset = 0 + */ + rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue], + (params->txop << 16) | (cw_max << 12) | + (cw_min << 8) | (params->aifs * + priv->slot_time + SIFS_TIME)); + } else { + if (queue != 0) + return -EINVAL; + + rtl818x_iowrite8(priv, &priv->map->CW_VAL, + cw_min | (cw_max << 4)); + } + return 0; +} + +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, + .bss_info_changed = rtl8187_bss_info_changed, + .configure_filter = rtl8187_configure_filter, + .conf_tx = rtl8187_conf_tx +}; + +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; + const char *chip_name; + u16 txpwr, reg; + int err, i; + + dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops); + if (!dev) { + printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n"); + return -ENOMEM; + } + + priv = dev->priv; + priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B); + + 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); + + BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels)); + BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates)); + + memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels)); + memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates)); + priv->map = (struct rtl818x_csr *)0xFF00; + + priv->band.band = IEEE80211_BAND_2GHZ; + priv->band.channels = priv->channels; + priv->band.n_channels = ARRAY_SIZE(rtl818x_channels); + priv->band.bitrates = priv->rates; + priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates); + dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; + + + priv->mode = NL80211_IFTYPE_MONITOR; + dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | + IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_RX_INCLUDES_FCS; + + 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++).hw_value = txpwr & 0xFF; + (*channel++).hw_value = txpwr >> 8; + } + for (i = 0; i < 2; i++) { + eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i, + &txpwr); + (*channel++).hw_value = txpwr & 0xFF; + (*channel++).hw_value = txpwr >> 8; + } + + eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE, + &priv->txpwr_base); + + reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1; + rtl818x_iowrite8(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_iowrite8(priv, &priv->map->PGSELECT, reg); + rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL); + + if (!priv->is_rtl8187b) { + u32 reg32; + reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF); + reg32 &= RTL818X_TX_CONF_HWVER_MASK; + switch (reg32) { + case RTL818X_TX_CONF_R8187vD_B: + /* Some RTL8187B devices have a USB ID of 0x8187 + * detect them here */ + chip_name = "RTL8187BvB(early)"; + priv->is_rtl8187b = 1; + priv->hw_rev = RTL8187BvB; + break; + case RTL818X_TX_CONF_R8187vD: + chip_name = "RTL8187vD"; + break; + default: + chip_name = "RTL8187vB (default)"; + } + } else { + /* + * Force USB request to write radio registers for 8187B, Realtek + * only uses it in their sources + */ + /*if (priv->asic_rev == 0) { + printk(KERN_WARNING "rtl8187: Forcing use of USB " + "requests to write to radio registers\n"); + priv->asic_rev = 1; + }*/ + switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) { + case RTL818X_R8187B_B: + chip_name = "RTL8187BvB"; + priv->hw_rev = RTL8187BvB; + break; + case RTL818X_R8187B_D: + chip_name = "RTL8187BvD"; + priv->hw_rev = RTL8187BvD; + break; + case RTL818X_R8187B_E: + chip_name = "RTL8187BvE"; + priv->hw_rev = RTL8187BvE; + break; + default: + chip_name = "RTL8187BvB (default)"; + priv->hw_rev = RTL8187BvB; + } + } + + if (!priv->is_rtl8187b) { + for (i = 0; i < 2; i++) { + eeprom_93cx6_read(&eeprom, + RTL8187_EEPROM_TXPWR_CHAN_6 + i, + &txpwr); + (*channel++).hw_value = txpwr & 0xFF; + (*channel++).hw_value = txpwr >> 8; + } + } else { + eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6, + &txpwr); + (*channel++).hw_value = txpwr & 0xFF; + + eeprom_93cx6_read(&eeprom, 0x0A, &txpwr); + (*channel++).hw_value = txpwr & 0xFF; + + eeprom_93cx6_read(&eeprom, 0x1C, &txpwr); + (*channel++).hw_value = txpwr & 0xFF; + (*channel++).hw_value = txpwr >> 8; + } + + if (priv->is_rtl8187b) + printk(KERN_WARNING "rtl8187: 8187B chip detected.\n"); + + /* + * XXX: Once this driver supports anything that requires + * beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ. + */ + dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); + + if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b) + printk(KERN_INFO "rtl8187: inconsistency between id with OEM" + " info!\n"); + + priv->rf = rtl8187_detect_rf(dev); + dev->extra_tx_headroom = (!priv->is_rtl8187b) ? + sizeof(struct rtl8187_tx_hdr) : + sizeof(struct rtl8187b_tx_hdr); + if (!priv->is_rtl8187b) + dev->queues = 1; + else + dev->queues = 4; + + err = ieee80211_register_hw(dev); + if (err) { + printk(KERN_ERR "rtl8187: Cannot register device\n"); + goto err_free_dev; + } + mutex_init(&priv->conf_mutex); + skb_queue_head_init(&priv->b_tx_status.queue); + + printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n", + wiphy_name(dev->wiphy), dev->wiphy->perm_addr, + chip_name, priv->asic_rev, priv->rf->name); + + 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 = __devexit_p(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); |
