136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Definitions for the hard disk image handler.
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*
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*
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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* Fred N. van Kempen, <decwiz@yahoo.com>
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* Copyright 2016-2018 Miran Grca.
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* Copyright 2017,2018 Fred N. van Kempen.
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*/
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#ifndef EMU_HDD_H
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# define EMU_HDD_H
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#define HDD_NUM 40 /* total of 40 images supported */
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/* Hard Disk bus types. */
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#if 0
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/* Bit 4 = DMA supported (0 = no, 1 yes) - used for IDE and ATAPI only;
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Bit 5 = Removable (0 = no, 1 yes). */
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enum {
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BUS_DISABLED = 0x00,
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BUS_MFM = 0x01, /* These four are for hard disk only. */
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BUS_XIDE = 0x02,
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BUS_XTA = 0x03,
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BUS_ESDI = 0x04,
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BUS_PANASONIC = 0x21, / These four are for CD-ROM only. */
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BUS_PHILIPS = 0x22,
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BUS_SONY = 0x23,
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BUS_MITSUMI = 0x24,
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BUS_IDE_PIO_ONLY = 0x05,
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BUS_IDE_PIO_AND_DMA = 0x15,
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BUS_IDE_R_PIO_ONLY = 0x25,
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BUS_IDE_R_PIO_AND_DMA = 0x35,
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BUS_ATAPI_PIO_ONLY = 0x06,
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BUS_ATAPI_PIO_AND_DMA = 0x16,
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BUS_ATAPI_R_PIO_ONLY = 0x26,
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BUS_ATAPI_R_PIO_AND_DMA = 0x36,
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BUS_SASI = 0x07,
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BUS_SASI_R = 0x27,
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BUS_SCSI = 0x08,
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BUS_SCSI_R = 0x28,
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BUS_USB = 0x09,
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BUS_USB_R = 0x29
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};
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#else
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enum {
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HDD_BUS_DISABLED = 0,
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HDD_BUS_MFM,
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HDD_BUS_XTA,
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HDD_BUS_ESDI,
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HDD_BUS_IDE,
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HDD_BUS_ATAPI,
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HDD_BUS_SCSI,
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HDD_BUS_USB
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};
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#endif
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/* Define the virtual Hard Disk. */
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typedef struct {
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uint8_t id;
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union {
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uint8_t channel; /* Needed for Settings to reduce the number of if's */
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uint8_t mfm_channel; /* Should rename and/or unionize */
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uint8_t esdi_channel;
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uint8_t xta_channel;
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uint8_t ide_channel;
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uint8_t scsi_id;
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};
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uint8_t bus,
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res; /* Reserved for bus mode */
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uint8_t wp; /* Disk has been mounted READ-ONLY */
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uint8_t pad, pad0;
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void *priv;
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char fn[1024], /* Name of current image file */
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prev_fn[1024]; /* Name of previous image file */
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uint32_t res0, pad1,
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base,
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spt,
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hpc, /* Physical geometry parameters */
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tracks;
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} hard_disk_t;
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extern hard_disk_t hdd[HDD_NUM];
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extern unsigned int hdd_table[128][3];
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extern int hdd_init(void);
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extern int hdd_string_to_bus(char *str, int cdrom);
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extern char *hdd_bus_to_string(int bus, int cdrom);
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extern int hdd_is_valid(int c);
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extern void hdd_image_init(void);
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extern int hdd_image_load(int id);
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extern void hdd_image_seek(uint8_t id, uint32_t sector);
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extern void hdd_image_read(uint8_t id, uint32_t sector, uint32_t count, uint8_t *buffer);
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extern int hdd_image_read_ex(uint8_t id, uint32_t sector, uint32_t count, uint8_t *buffer);
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extern void hdd_image_write(uint8_t id, uint32_t sector, uint32_t count, uint8_t *buffer);
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extern int hdd_image_write_ex(uint8_t id, uint32_t sector, uint32_t count, uint8_t *buffer);
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extern void hdd_image_zero(uint8_t id, uint32_t sector, uint32_t count);
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extern int hdd_image_zero_ex(uint8_t id, uint32_t sector, uint32_t count);
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extern uint32_t hdd_image_get_last_sector(uint8_t id);
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extern uint32_t hdd_image_get_pos(uint8_t id);
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extern uint8_t hdd_image_get_type(uint8_t id);
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extern void hdd_image_unload(uint8_t id, int fn_preserve);
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extern void hdd_image_close(uint8_t id);
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extern void hdd_image_calc_chs(uint32_t *c, uint32_t *h, uint32_t *s, uint32_t size);
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extern int image_is_hdi(const char *s);
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extern int image_is_hdx(const char *s, int check_signature);
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extern int image_is_vhd(const char *s, int check_signature);
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#endif /*EMU_HDD_H*/
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