/*
Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
<http://rt2x00.serialmonkey.com>
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 )
/*
* USB vendor commands.
*/
#define USB_DEVICE_MODE 0x01
#define USB_SINGLE_WRITE 0x02
#define USB_SINGLE_READ 0x03
#define USB_MULTI_WRITE 0x06
#define USB_MULTI_READ 0x07
#define USB_EEPROM_WRITE 0x08
#define USB_EEPROM_READ 0x09
#define USB_LED_CONTROL 0x0a /* RT73USB */
#define USB_RX_CONTROL 0x0c
/*
* Device modes offset
*/
#define USB_MODE_RESET 0x01
#define USB_MODE_UNPLUG 0x02
#define USB_MODE_FUNCTION 0x03
#define USB_MODE_TEST 0x04
#define USB_MODE_SLEEP 0x07 /* RT73USB */
#define USB_MODE_FIRMWARE 0x08 /* RT73USB */
#define USB_MODE_WAKEUP 0x09 /* RT73USB */
/*
* Used to read/write from/to the device.
* 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);
/*
* Used to read/write from/to the device.
* 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);
/*
* 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);
/*
* 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);
}
/*
* 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, 0x0000,
0x0000, eeprom, lenght, timeout);
}
/*
* 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 */
