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