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rt2x00: Support for large vendor requests

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Adds an extra rt2x00 vendor request function to support register
transfers beyond the CSR_CACHE_SIZE / USB packet size limit. This
is useful for firmware uploads, beacon templates and keys, all
of which are to large to do with a single USB request.

Signed-off-by: Iwo Mergler <Iwo@call-direct.com.au>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Iwo Mergler 2008-07-19 16:16:54 +02:00 committed by John W. Linville
parent f2fdbc4847
commit ed0dbeeb92
2 changed files with 52 additions and 1 deletions
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32
drivers/net/wireless/rt2x00/rt2x00usb.c
View file

@ -122,6 +122,38 @@ int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
}
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev,
const u8 request, const u8 requesttype,
const u16 offset, void *buffer,
const u16 buffer_length,
const int timeout)
{
int status = 0;
unsigned char *tb;
u16 off, len, bsize;
mutex_lock(&rt2x00dev->usb_cache_mutex);
tb = buffer;
off = offset;
len = buffer_length;
while (len && !status) {
bsize = min_t(u16, CSR_CACHE_SIZE, len);
status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request,
requesttype, off, tb,
bsize, timeout);
tb += bsize;
len -= bsize;
off += bsize;
}
mutex_unlock(&rt2x00dev->usb_cache_mutex);
return status;
}
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_large_buff);
/*
* TX data handlers.
*/

21
drivers/net/wireless/rt2x00/rt2x00usb.h
View file

@ -70,7 +70,7 @@
/*
* Cache size
*/
#define CSR_CACHE_SIZE 8
#define CSR_CACHE_SIZE 64
#define CSR_CACHE_SIZE_FIRMWARE 64
/*
@ -171,6 +171,25 @@ int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
const u16 offset, void *buffer,
const u16 buffer_length, const int timeout);
/**
* rt2x00usb_vendor_request_large_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 start 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 is used to transfer register data in blocks larger
* then CSR_CACHE_SIZE. Use for firmware upload, keys and beacons.
*/
int rt2x00usb_vendor_request_large_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_sw - Send single register command to device
* @rt2x00dev: Pointer to &struct rt2x00_dev