minix/drivers/usbd/hcd/musb/musb_core.h
Wojciech Zajac c1ba580ae2 Generalization of USB transfer's error handling
No longer assumes EP0 for control transfer, in general HCD code.

Some additional cleanup.
2014-07-28 17:05:53 +02:00

59 lines
1.9 KiB
C
Executable file

/*
* Interface of low level MUSB core logic (variant independent)
*/
#ifndef _MUSB_CORE_H_
#define _MUSB_CORE_H_
#include <usb/hcd_common.h>
/*===========================================================================*
* Types and constants *
*===========================================================================*/
/* Holds info on DATA toggle (DATA0/DATA1) initialization,
* required by bulk transfers */
typedef enum {
MUSB_DATATOG_UNKNOWN = 0, /* Default with memset 0 */
MUSB_DATATOG_INIT
}
musb_datatog;
/* Structure to hold Mentor USB core configuration
* May be more than one on a single chip
* Should be initialized by MUSB's variant specific code (like AM335x) */
typedef struct {
void * regs; /* Points to beginning of memory mapped registers */
hcd_reg1 ep; /* Currently used endpoint */
hcd_reg1 addr; /* Currently used address */
musb_datatog datatog_tx[HCD_TOTAL_EP];
musb_datatog datatog_rx[HCD_TOTAL_EP];
}
musb_core_config;
/*===========================================================================*
* Function prototypes *
*===========================================================================*/
/* Only to be used outside generic HCD code */
void musb_core_start(void *);
void musb_core_stop(void *);
/* For HCD interface */
void musb_setup_device(void *, hcd_reg1, hcd_reg1);
int musb_reset_device(void *, hcd_speed *);
void musb_setup_stage(void *, hcd_ctrlrequest *);
void musb_rx_stage(void *, hcd_datarequest *);
void musb_tx_stage(void *, hcd_datarequest *);
void musb_in_data_stage(void *);
void musb_out_data_stage(void *);
void musb_in_status_stage(void *);
void musb_out_status_stage(void *);
int musb_read_data(void *, hcd_reg1 *, hcd_reg1);
int musb_check_error(void *, hcd_transfer, hcd_reg1, hcd_direction);
#endif /* !_MUSB_CORE_H_ */