;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2007-2011. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
struc URB
{
.fd dd ?
.bk dd ?
.dev dd ? ; pointer to associated device
.pipe dd ? ; pipe information
.status dd ? ; non-ISO status
.transfer_flags dd ? ; URB_SHORT_NOT_OK | ...
.transfer_buffer dd ? ; associated data buffer
.transfer_dma dd ? ; dma addr for transfer_buffer
.transfer_buffer_length dd ? ; data buffer length
.actual_length dd ? ; actual transfer length
.setup_packet dd ? ; setup packet (control only)
.setup_dma dd ? ; dma addr for setup_packet
.start_frame dd ? ; start frame (ISO)
.number_of_packets dd ? ; number of ISO packets
.interval dd ? ; transfer interval
.error_count dd ? ; number of ISO errors
.context dd ? ; context for completion
.complete dd ? ; (in) completion routine
.iso_frame_desc:
}
virtual at 0
URB URB
end virtual
struc REQ ;usb request
{
.request_type db ?
.request db ?
.value dw ?
.index dw ?
.length dw ?
}
virtual at 0
REQ REQ
end virtual
align 4
proc usb_control_msg stdcall, dev:dword, pipe:dword, request:dword,\
requesttype:dword, value:dword, index:dword,\
data:dword, size:dword, timeout:dword
locals
req REQ
endl
lea eax, [req]
mov ecx, [request]
mov ebx, [requesttupe]
mov edx, [value]
mov esi, [index]
mov edi, [size]
mov [eax+REQ.request_type], bl
mov [eax+REQ.request], cl
mov [eax+REQ.value], dx
mov [eax+REQ.index], si
mov [eax+REQ.length], di
stdcall usb_internal_control_msg, [dev], [pipe], \
eax, [data], [size], [timeout]
ret
endp
; returns status (negative) or length (positive)
static int usb_internal_control_msg(struct usb_device *usb_dev,
unsigned int pipe,
struct usb_ctrlrequest *cmd,
void *data, int len, int timeout)
{
struct urb *urb;
int retv;
int length;
urb = usb_alloc_urb(0, GFP_NOIO);
if (!urb)
return -ENOMEM;
usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char *)cmd, data,
len, usb_api_blocking_completion, NULL);
retv = usb_start_wait_urb(urb, timeout, &length);
if (retv < 0)
return retv;
else
return length;
}
;void usb_fill_control_urb (struct urb *urb,
; struct usb_device *dev,
; unsigned int pipe,
; unsigned char *setup_packet,
; void *transfer_buffer,
; int buffer_length,
; usb_complete_t complete_fn,
; void *context)
;{
;
; urb->dev = dev;
; urb->pipe = pipe;
; urb->setup_packet = setup_packet;
; urb->transfer_buffer = transfer_buffer;
; urb->transfer_buffer_length = buffer_length;
; urb->complete = complete_fn;
; urb->context = context;
;}
;