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