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/*
* Minix3 USB mass storage driver definitions
*/
#ifndef _USB_STORAGE_H_
#define _USB_STORAGE_H_
#include <minix/driver.h> /* struct device */
#include <minix/type.h> /* vir_bytes */
/* TODO: no header for ddekit_usb_dev */
#include "urb_helper.h"
/* Number of handled peripherals (USB devices) */
#define MAX_PERIPHS (1)
/* Number of handled disks per driver */
#define MAX_DRIVES (4)
/* 4 partitions per disk */
#define PART_PER_DISK (4)
/* 4 sub partitions per partition */
#define SUBPART_PER_PART (4)
/* 16 sub partitions per disk */
#define SUBPART_PER_DISK (PART_PER_DISK * SUBPART_PER_PART)
/*---------------------------*
* declared types *
*---------------------------*/
/* Information on opened mass storage drives */
typedef struct mass_storage_drive {
struct device disk; /* disk device */
struct device part[PART_PER_DISK]; /* partition devices */
struct device subpart[SUBPART_PER_DISK];/* sub-partition devices */
unsigned long open_ct; /* opening counter */
int drive_idx; /* Index of this drive */
}
mass_storage_drive;
/* Information on attached peripherals (USB devices) */
typedef struct mass_storage_periph {
mass_storage_drive drives[MAX_DRIVES]; /* Possible drive info */
struct ddekit_usb_dev * dev; /* DDEKit device handler */
unsigned int interfaces; /* Interfaces bitmap */
urb_ep_config ep_in; /* Bulk IN endpoint */
urb_ep_config ep_out; /* Bulk OUT endpoint */
}
mass_storage_periph;
/* Structure for the information on current state of driver */
typedef struct mass_storage_state {
/* DDEKit device handlers */
mass_storage_periph periph[MAX_PERIPHS];
/* Currently used peripheral */
mass_storage_periph * cur_periph;
/* Currently used drive */
mass_storage_drive * cur_drive;
/* Currently used device (drive/partition/sub-partition) */
struct device * cur_device;
/* Driver instance */
long instance;
}
mass_storage_state;
/* State of current IO vector array for transfer operations */
typedef struct iov_state {
vir_bytes base_addr; /* Address to read/write or grant ID */
vir_bytes remaining_bytes; /* How many bytes remain in vector */
vir_bytes offset; /* How many bytes were copied */
unsigned int iov_idx; /* Index of currently selected vector */
}
iov_state;
#endif /* !_USB_STORAGE_H_ */
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