Commit 1264b951 authored by Kalle Valo's avatar Kalle Valo Committed by John W. Linville
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at76c50x-usb: add driver

This is a driver for usb devices based on at76c50x chipset. This is
a mac80211 port of the original at76_usb driver.
Signed-off-by: default avatarKalle Valo <>
Signed-off-by: default avatarJohn W. Linville <>
parent 41d2f291
......@@ -228,6 +228,14 @@ config PCMCIA_ATMEL
Enable support for PCMCIA cards containing the
Atmel at76c502 and at76c504 chips.
config AT76C50X_USB
tristate "Atmel at76c503/at76c505/at76c505a USB cards"
depends on MAC80211 && WLAN_80211 && USB
select FW_LOADER
Enable support for USB Wireless devices using Atmel at76c503,
at76c505 or at76c505a chips.
config AIRO_CS
tristate "Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards"
depends on PCMCIA && (BROKEN || !M32R) && WLAN_80211
......@@ -24,6 +24,8 @@ obj-$(CONFIG_ATMEL) += atmel.o
obj-$(CONFIG_PCI_ATMEL) += atmel_pci.o
obj-$(CONFIG_PCMCIA_ATMEL) += atmel_cs.o
obj-$(CONFIG_AT76C50X_USB) += at76c50x-usb.o
obj-$(CONFIG_PRISM54) += prism54/
obj-$(CONFIG_HOSTAP) += hostap/
This diff is collapsed.
* Copyright (c) 2002,2003 Oliver Kurth
* (c) 2003,2004 Joerg Albert <>
* (c) 2007 Guido Guenther <>
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This driver was based on information from the Sourceforge driver
* released and maintained by Atmel:
* Although the code was completely re-written,
* it would have been impossible without Atmel's decision to
* release an Open Source driver (unfortunately the firmware was
* kept binary only). Thanks for that decision to Atmel!
#ifndef _AT76_USB_H
#define _AT76_USB_H
/* Board types */
enum board_type {
BOARD_503_ISL3861 = 1,
BOARD_503_ISL3863 = 2,
BOARD_503 = 3,
BOARD_503_ACC = 4,
BOARD_505 = 5,
BOARD_505_2958 = 6,
BOARD_505A = 7,
BOARD_505AMX = 8
#define CMD_STATUS_IDLE 0x00
#define CMD_STATUS_TIME_OUT 0x07
/* answers to get op mode */
#define OPMODE_NONE 0x00
#define CMD_SET_MIB 0x01
#define CMD_GET_MIB 0x02
#define CMD_SCAN 0x03
#define CMD_JOIN 0x04
#define CMD_START_IBSS 0x05
#define CMD_RADIO_ON 0x06
#define CMD_RADIO_OFF 0x07
#define CMD_STARTUP 0x0B
#define MIB_LOCAL 0x01
#define MIB_MAC_ADDR 0x02
#define MIB_MAC 0x03
#define MIB_MAC_MGMT 0x05
#define MIB_MAC_WEP 0x06
#define MIB_PHY 0x07
#define MIB_FW_VERSION 0x08
#define MIB_MDOMAIN 0x09
#define ADHOC_MODE 1
/* values for struct mib_local, field preamble_type */
/* values for tx_rate */
#define TX_RATE_1MBIT 0
#define TX_RATE_2MBIT 1
#define TX_RATE_5_5MBIT 2
#define TX_RATE_11MBIT 3
#define TX_RATE_AUTO 4
/* power management modes */
#define AT76_PM_OFF 1
#define AT76_PM_ON 2
#define AT76_PM_SMART 3
struct hwcfg_r505 {
u8 cr39_values[14];
u8 reserved1[14];
u8 bb_cr[14];
u8 pidvid[4];
u8 mac_addr[ETH_ALEN];
u8 regulatory_domain;
u8 reserved2[14];
u8 cr15_values[14];
u8 reserved3[3];
} __attribute__((packed));
struct hwcfg_rfmd {
u8 cr20_values[14];
u8 cr21_values[14];
u8 bb_cr[14];
u8 pidvid[4];
u8 mac_addr[ETH_ALEN];
u8 regulatory_domain;
u8 low_power_values[14];
u8 normal_power_values[14];
u8 reserved1[3];
} __attribute__((packed));
struct hwcfg_intersil {
u8 mac_addr[ETH_ALEN];
u8 cr31_values[14];
u8 cr58_values[14];
u8 pidvid[4];
u8 regulatory_domain;
u8 reserved[1];
} __attribute__((packed));
union at76_hwcfg {
struct hwcfg_intersil i;
struct hwcfg_rfmd r3;
struct hwcfg_r505 r5;
#define WEP_SMALL_KEY_LEN (40 / 8)
#define WEP_LARGE_KEY_LEN (104 / 8)
#define WEP_KEYS (4)
struct at76_card_config {
u8 exclude_unencrypted;
u8 promiscuous_mode;
u8 short_retry_limit;
u8 encryption_type;
__le16 rts_threshold;
__le16 fragmentation_threshold; /* 256..2346 */
u8 basic_rate_set[4];
u8 auto_rate_fallback; /* 0,1 */
u8 channel;
u8 privacy_invoked;
u8 wep_default_key_id; /* 0..3 */
u8 current_ssid[32];
u8 wep_default_key_value[4][WEP_LARGE_KEY_LEN];
u8 ssid_len;
u8 short_preamble;
__le16 beacon_period;
} __attribute__((packed));
struct at76_command {
u8 cmd;
u8 reserved;
__le16 size;
u8 data[0];
} __attribute__((packed));
/* Length of Atmel-specific Rx header before 802.11 frame */
#define AT76_RX_HDRLEN offsetof(struct at76_rx_buffer, packet)
struct at76_rx_buffer {
__le16 wlength;
u8 rx_rate;
u8 newbss;
u8 fragmentation;
u8 rssi;
u8 link_quality;
u8 noise_level;
__le32 rx_time;
u8 packet[IEEE80211_MAX_FRAG_THRESHOLD];
} __attribute__((packed));
/* Length of Atmel-specific Tx header before 802.11 frame */
#define AT76_TX_HDRLEN offsetof(struct at76_tx_buffer, packet)
struct at76_tx_buffer {
__le16 wlength;
u8 tx_rate;
u8 padding;
u8 reserved[4];
u8 packet[IEEE80211_MAX_FRAG_THRESHOLD];
} __attribute__((packed));
/* defines for scan_type below */
struct at76_req_scan {
u8 bssid[ETH_ALEN];
u8 essid[32];
u8 scan_type;
u8 channel;
__le16 probe_delay;
__le16 min_channel_time;
__le16 max_channel_time;
u8 essid_size;
u8 international_scan;
} __attribute__((packed));
struct at76_req_ibss {
u8 bssid[ETH_ALEN];
u8 essid[32];
u8 bss_type;
u8 channel;
u8 essid_size;
u8 reserved[3];
} __attribute__((packed));
struct at76_req_join {
u8 bssid[ETH_ALEN];
u8 essid[32];
u8 bss_type;
u8 channel;
__le16 timeout;
u8 essid_size;
u8 reserved;
} __attribute__((packed));
struct set_mib_buffer {
u8 type;
u8 size;
u8 index;
u8 reserved;
union {
u8 byte;
__le16 word;
u8 addr[ETH_ALEN];
} data;
} __attribute__((packed));
struct mib_local {
u16 reserved0;
u8 beacon_enable;
u8 txautorate_fallback;
u8 reserved1;
u8 ssid_size;
u8 promiscuous_mode;
u16 reserved2;
u8 preamble_type;
u16 reserved3;
} __attribute__((packed));
struct mib_mac_addr {
u8 mac_addr[ETH_ALEN];
u8 res[2]; /* ??? */
u8 group_addr[4][ETH_ALEN];
u8 group_addr_status[4];
} __attribute__((packed));
struct mib_mac {
__le32 max_tx_msdu_lifetime;
__le32 max_rx_lifetime;
__le16 frag_threshold;
__le16 rts_threshold;
__le16 cwmin;
__le16 cwmax;
u8 short_retry_time;
u8 long_retry_time;
u8 scan_type; /* active or passive */
u8 scan_channel;
__le16 probe_delay; /* delay before ProbeReq in active scan, RO */
__le16 min_channel_time;
__le16 max_channel_time;
__le16 listen_interval;
u8 desired_ssid[32];
u8 desired_bssid[ETH_ALEN];
u8 desired_bsstype; /* ad-hoc or infrastructure */
u8 reserved2;
} __attribute__((packed));
struct mib_mac_mgmt {
__le16 beacon_period;
__le16 CFP_max_duration;
__le16 medium_occupancy_limit;
__le16 station_id; /* assoc id */
__le16 ATIM_window;
u8 CFP_mode;
u8 privacy_option_implemented;
u8 DTIM_period;
u8 CFP_period;
u8 current_bssid[ETH_ALEN];
u8 current_essid[32];
u8 current_bss_type;
u8 power_mgmt_mode;
/* rfmd and 505 */
u8 ibss_change;
u8 res;
u8 multi_domain_capability_implemented;
u8 multi_domain_capability_enabled;
u8 country_string[3];
u8 reserved[3];
} __attribute__((packed));
struct mib_mac_wep {
u8 privacy_invoked; /* 0 disable encr., 1 enable encr */
u8 wep_default_key_id;
u8 wep_key_mapping_len;
u8 exclude_unencrypted;
__le32 wep_icv_error_count;
__le32 wep_excluded_count;
u8 wep_default_keyvalue[WEP_KEYS][WEP_LARGE_KEY_LEN];
u8 encryption_level; /* 1 for 40bit, 2 for 104bit encryption */
} __attribute__((packed));
struct mib_phy {
__le32 ed_threshold;
__le16 slot_time;
__le16 sifs_time;
__le16 preamble_length;
__le16 plcp_header_length;
__le16 mpdu_max_length;
__le16 cca_mode_supported;
u8 operation_rate_set[4];
u8 channel_id;
u8 current_cca_mode;
u8 phy_type;
u8 current_reg_domain;
} __attribute__((packed));
struct mib_fw_version {
u8 major;
u8 minor;
u8 patch;
u8 build;
} __attribute__((packed));
struct mib_mdomain {
u8 tx_powerlevel[14];
u8 channel_list[14]; /* 0 for invalid channels */
} __attribute__((packed));
struct at76_fw_header {
__le32 crc; /* CRC32 of the whole image */
__le32 board_type; /* firmware compatibility code */
u8 build; /* firmware build number */
u8 patch; /* firmware patch level */
u8 minor; /* firmware minor version */
u8 major; /* firmware major version */
__le32 str_offset; /* offset of the copyright string */
__le32 int_fw_offset; /* internal firmware image offset */
__le32 int_fw_len; /* internal firmware image length */
__le32 ext_fw_offset; /* external firmware image offset */
__le32 ext_fw_len; /* external firmware image length */
} __attribute__((packed));
/* a description of a regulatory domain and the allowed channels */
struct reg_domain {
u16 code;
char const *name;
u32 channel_map; /* if bit N is set, channel (N+1) is allowed */
/* Data for one loaded firmware file */
struct fwentry {
const char *const fwname;
const struct firmware *fw;
int extfw_size;
int intfw_size;
/* pointer to loaded firmware, no need to free */
u8 *extfw; /* external firmware, extfw_size bytes long */
u8 *intfw; /* internal firmware, intfw_size bytes long */
enum board_type board_type; /* board type */
struct mib_fw_version fw_version;
int loaded; /* Loaded and parsed successfully */
struct at76_priv {
struct usb_device *udev; /* USB device pointer */
struct sk_buff *rx_skb; /* skbuff for receiving data */
struct sk_buff *tx_skb; /* skbuff for transmitting data */
void *bulk_out_buffer; /* buffer for sending data */
struct urb *tx_urb; /* URB for sending data */
struct urb *rx_urb; /* URB for receiving data */
unsigned int tx_pipe; /* bulk out pipe */
unsigned int rx_pipe; /* bulk in pipe */
struct mutex mtx; /* locks this structure */
/* work queues */
struct work_struct work_set_promisc;
struct work_struct work_submit_rx;
struct delayed_work dwork_hw_scan;
struct tasklet_struct rx_tasklet;
/* the WEP stuff */
int wep_enabled; /* 1 if WEP is enabled */
int wep_key_id; /* key id to be used */
u8 wep_keys[WEP_KEYS][WEP_LARGE_KEY_LEN]; /* WEP keys */
u8 wep_keys_len[WEP_KEYS]; /* length of WEP keys */
int channel;
int iw_mode;
u8 bssid[ETH_ALEN];
u8 essid[IW_ESSID_MAX_SIZE];
int essid_size;
int radio_on;
int promisc;
int preamble_type; /* 0 - long, 1 - short, 2 - auto */
int auth_mode; /* authentication type: 0 open, 1 shared key */
int txrate; /* 0,1,2,3 = 1,2,5.5,11 Mbps, 4 is auto */
int frag_threshold; /* threshold for fragmentation of tx packets */
int rts_threshold; /* threshold for RTS mechanism */
int short_retry_limit;
int scan_min_time; /* scan min channel time */
int scan_max_time; /* scan max channel time */
int scan_need_any; /* if set, need to scan for any ESSID */
u16 assoc_id; /* current association ID, if associated */
u8 pm_mode; /* power management mode */
u32 pm_period; /* power management period in microseconds */
struct reg_domain const *domain; /* reg domain description */
/* These fields contain HW config provided by the device (not all of
* these fields are used by all board types) */
u8 mac_addr[ETH_ALEN];
u8 regulatory_domain;
struct at76_card_config card_config;
enum board_type board_type;
struct mib_fw_version fw_version;
unsigned int device_unplugged:1;
unsigned int netdev_registered:1;
struct set_mib_buffer mib_buf; /* global buffer for set_mib calls */
int beacon_period; /* period of mgmt beacons, Kus */
struct ieee80211_hw *hw;
int mac80211_registered;
#define DEF_RTS_THRESHOLD 1536
#define DEF_CHANNEL 10
#define DEF_SCAN_MIN_TIME 10
#define DEF_SCAN_MAX_TIME 120
/* the max padding size for tx in bytes (see calc_padding) */
#endif /* _AT76_USB_H */
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