/* Copyright (C) 2004 - 2008 rt2x00 SourceForge Project 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 program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Module: rt2x00usb Abstract: Data structures for the rt2x00usb module. */ #ifndef RT2X00USB_H #define RT2X00USB_H /* * This variable should be used with the * usb_driver structure initialization. */ #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) /* * Register defines. * Some registers require multiple attempts before success, * in those cases REGISTER_BUSY_COUNT attempts should be * taken with a REGISTER_BUSY_DELAY interval. * For USB vendor requests we need to pass a timeout * time in ms, for this we use the REGISTER_TIMEOUT, * however when loading firmware a higher value is * required. In that case we use the REGISTER_TIMEOUT_FIRMWARE. */ #define REGISTER_BUSY_COUNT 5 #define REGISTER_BUSY_DELAY 100 #define REGISTER_TIMEOUT 500 #define REGISTER_TIMEOUT_FIRMWARE 1000 /* * Cache size */ #define CSR_CACHE_SIZE 8 #define CSR_CACHE_SIZE_FIRMWARE 64 /* * USB request types. */ #define USB_VENDOR_REQUEST ( USB_TYPE_VENDOR | USB_RECIP_DEVICE ) #define USB_VENDOR_REQUEST_IN ( USB_DIR_IN | USB_VENDOR_REQUEST ) #define USB_VENDOR_REQUEST_OUT ( USB_DIR_OUT | USB_VENDOR_REQUEST ) /** * enum rt2x00usb_vendor_request: USB vendor commands. */ enum rt2x00usb_vendor_request { USB_DEVICE_MODE = 1, USB_SINGLE_WRITE = 2, USB_SINGLE_READ = 3, USB_MULTI_WRITE = 6, USB_MULTI_READ = 7, USB_EEPROM_WRITE = 8, USB_EEPROM_READ = 9, USB_LED_CONTROL = 10, /* RT73USB */ USB_RX_CONTROL = 12, }; /** * enum rt2x00usb_mode_offset: Device modes offset. */ enum rt2x00usb_mode_offset { USB_MODE_RESET = 1, USB_MODE_UNPLUG = 2, USB_MODE_FUNCTION = 3, USB_MODE_TEST = 4, USB_MODE_SLEEP = 7, /* RT73USB */ USB_MODE_FIRMWARE = 8, /* RT73USB */ USB_MODE_WAKEUP = 9, /* RT73USB */ }; /** * rt2x00usb_vendor_request - Send register command to device * @rt2x00dev: Pointer to &struct rt2x00_dev * @request: USB vendor command (See &enum rt2x00usb_vendor_request) * @requesttype: Request type &USB_VENDOR_REQUEST_* * @offset: Register offset to perform action on * @value: Value to write to device * @buffer: Buffer where information will be read/written to by device * @buffer_length: Size of &buffer * @timeout: Operation timeout * * This is the main function to communicate with the device, * the &buffer argument _must_ either be NULL or point to * a buffer allocated by kmalloc. Failure to do so can lead * to unexpected behavior depending on the architecture. */ int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev, const u8 request, const u8 requesttype, const u16 offset, const u16 value, void *buffer, const u16 buffer_length, const int timeout); /** * rt2x00usb_vendor_request_buff - Send register command to device (buffered) * @rt2x00dev: Pointer to &struct rt2x00_dev * @request: USB vendor command (See &enum rt2x00usb_vendor_request) * @requesttype: Request type &USB_VENDOR_REQUEST_* * @offset: Register offset to perform action on * @buffer: Buffer where information will be read/written to by device * @buffer_length: Size of &buffer * @timeout: Operation timeout * * This function will use a previously with kmalloc allocated cache * to communicate with the device. The contents of the buffer pointer * will be copied to this cache when writing, or read from the cache * when reading. * Buffers send to &rt2x00usb_vendor_request _must_ be allocated with * kmalloc. Hence the reason for using a previously allocated cache * which has been allocated properly. */ int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, const u8 request, const u8 requesttype, const u16 offset, void *buffer, const u16 buffer_length, const int timeout); /** * rt2x00usb_vendor_request_buff - Send register command to device (buffered) * @rt2x00dev: Pointer to &struct rt2x00_dev * @request: USB vendor command (See &enum rt2x00usb_vendor_request) * @requesttype: Request type &USB_VENDOR_REQUEST_* * @offset: Register offset to perform action on * @buffer: Buffer where information will be read/written to by device * @buffer_length: Size of &buffer * @timeout: Operation timeout * * A version of &rt2x00usb_vendor_request_buff which must be called * if the usb_cache_mutex is already held. */ int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, const u8 request, const u8 requesttype, const u16 offset, void *buffer, const u16 buffer_length, const int timeout); /** * rt2x00usb_vendor_request_sw - Send single register command to device * @rt2x00dev: Pointer to &struct rt2x00_dev * @request: USB vendor command (See &enum rt2x00usb_vendor_request) * @offset: Register offset to perform action on * @value: Value to write to device * @timeout: Operation timeout * * Simple wrapper around rt2x00usb_vendor_request to write a single * command to the device. Since we don't use the buffer argument we * don't have to worry about kmalloc here. */ static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev, const u8 request, const u16 offset, const u16 value, const int timeout) { return rt2x00usb_vendor_request(rt2x00dev, request, USB_VENDOR_REQUEST_OUT, offset, value, NULL, 0, timeout); } /** * rt2x00usb_eeprom_read - Read eeprom from device * @rt2x00dev: Pointer to &struct rt2x00_dev * @eeprom: Pointer to eeprom array to store the information in * @length: Number of bytes to read from the eeprom * * Simple wrapper around rt2x00usb_vendor_request to read the eeprom * from the device. Note that the eeprom argument _must_ be allocated using * kmalloc for correct handling inside the kernel USB layer. */ static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev, __le16 *eeprom, const u16 lenght) { int timeout = REGISTER_TIMEOUT * (lenght / sizeof(u16)); return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ, USB_VENDOR_REQUEST_IN, 0, 0, eeprom, lenght, timeout); } /** * rt2x00usb_vendor_request_async - Send register command to device (async) * @rt2x00dev: Pointer to &struct rt2x00_dev * @request: USB vendor command (See &enum rt2x00usb_vendor_request) * @offset: Register offset to perform action on * @value: Value to write to device * * Asynchroneous version of &rt2x00usb_vendor_request this is required * for some routines where the driver cannot sleep because it is in * irq context. Note that with this function the driver will not be * notified on failure or timeout of the command. It will only be notified * if the start of the command succeeded or not. This means it should not be * used when the command must succeed. */ int rt2x00usb_vendor_request_async(struct rt2x00_dev *rt2x00dev, const u8 request, const u16 offset, const u16 value); /* * Radio handlers */ void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev); /* * TX data handlers. */ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev, struct data_queue *queue, struct sk_buff *skb, struct ieee80211_tx_control *control); /** * struct queue_entry_priv_usb_rx: Per RX entry USB specific information * * @urb: Urb structure used for device communication. */ struct queue_entry_priv_usb_rx { struct urb *urb; }; /** * struct queue_entry_priv_usb_tx: Per TX entry USB specific information * * @urb: Urb structure used for device communication. * @control: mac80211 control structure used to transmit data. */ struct queue_entry_priv_usb_tx { struct urb *urb; struct ieee80211_tx_control control; }; /** * struct queue_entry_priv_usb_tx: Per TX entry USB specific information * * The first section should match &struct queue_entry_priv_usb_tx exactly. * rt2500usb can use this structure to send a guardian byte when working * with beacons. * * @urb: Urb structure used for device communication. * @control: mac80211 control structure used to transmit data. * @guardian_data: Set to 0, used for sending the guardian data. * @guardian_urb: Urb structure used to send the guardian data. */ struct queue_entry_priv_usb_bcn { struct urb *urb; struct ieee80211_tx_control control; unsigned int guardian_data; struct urb *guardian_urb; }; /* * Device initialization handlers. */ void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry); void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry); int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev); void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev); /* * USB driver handlers. */ int rt2x00usb_probe(struct usb_interface *usb_intf, const struct usb_device_id *id); void rt2x00usb_disconnect(struct usb_interface *usb_intf); #ifdef CONFIG_PM int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state); int rt2x00usb_resume(struct usb_interface *usb_intf); #else #define rt2x00usb_suspend NULL #define rt2x00usb_resume NULL #endif /* CONFIG_PM */ #endif /* RT2X00USB_H */