58 lines
1.9 KiB
C
Executable File
58 lines
1.9 KiB
C
Executable File
/*
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* Interface for HCD
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*
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* This file holds prototypes that must be implemented by HCD
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* and event call that should be called when interrupt occurred
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*/
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#ifndef _HCD_INTERFACE_H_
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#define _HCD_INTERFACE_H_
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#include <usb/hcd_common.h>
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/*===========================================================================*
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* HCD additional defines *
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*===========================================================================*/
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/* Can be returned by 'read_data' to indicate error */
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#define HCD_READ_ERR -1
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/*===========================================================================*
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* HCD driver structure to be filled
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*===========================================================================*/
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struct hcd_driver_state {
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/* Standard USB controller procedures */
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void (*setup_device) (void *, hcd_reg1, hcd_reg1);
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int (*reset_device) (void *, hcd_speed *);
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void (*setup_stage) (void *, hcd_ctrlrequest *);
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void (*rx_stage) (void *, hcd_datarequest *);
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void (*tx_stage) (void *, hcd_datarequest *);
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void (*in_data_stage) (void *);
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void (*out_data_stage) (void *);
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void (*in_status_stage) (void *);
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void (*out_status_stage) (void *);
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int (*read_data) (void *, hcd_reg1 *, int);
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int (*check_error) (void *, hcd_transfer, hcd_direction);
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/* Controller's private data (like mapped registers) */
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void * private_data;
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/* Current state to be handled by driver */
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hcd_event current_event;
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int current_endpoint;
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hcd_event expected_event;
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int expected_endpoint;
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};
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/*===========================================================================*
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* HCD event handling routine *
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*===========================================================================*/
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/* Handle asynchronous event
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* This must be called in case of specific HCD interrupts listed above */
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void hcd_handle_event(hcd_driver_state *);
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#endif /* !_HCD_INTERFACE_H_ */
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