3a8bd15b9d
Extensive rework of CD-ROM image handling; The settings save code now forces some devices' (SCSI disk, CD-ROM, etc.) pointers to NULL before resetting the machine - fixes segmentation faults after changing settings; Added the NCR 53c825A and 53c875 SCSI controllers; Fixed IDE/ATAPI DMA; Slight changed to PCI IDE bus master operation.
171 lines
4.4 KiB
C
171 lines
4.4 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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* Generic CD-ROM drive core header.
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*
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* Version: @(#)cdrom.h 1.0.17 2018/10/28
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*
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* Author: Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2016,2017 Miran Grca.
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*/
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#ifndef EMU_CDROM_H
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#define EMU_CDROM_H
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#define CDROM_NUM 4
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#define CD_STATUS_EMPTY 0
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#define CD_STATUS_DATA_ONLY 1
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#define CD_STATUS_PAUSED 2
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#define CD_STATUS_PLAYING 3
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#define CD_STATUS_STOPPED 4
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#define CD_STATUS_PLAYING_COMPLETED 5
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/* Medium changed flag. */
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#define CD_STATUS_MEDIUM_CHANGED 0x80
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#define CD_TRACK_AUDIO 0x08
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#define CD_TRACK_MODE2 0x04
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#define CD_READ_DATA 0
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#define CD_READ_AUDIO 1
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#define CD_READ_RAW 2
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#define CD_TOC_NORMAL 0
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#define CD_TOC_SESSION 1
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#define CD_TOC_RAW 2
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#define BUF_SIZE 32768
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#define CDROM_IMAGE 200
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/* This is so that if/when this is changed to something else,
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changing this one define will be enough. */
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#define CDROM_EMPTY !dev->host_drive
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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CDROM_BUS_DISABLED = 0,
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CDROM_BUS_ATAPI = 4,
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CDROM_BUS_SCSI,
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CDROM_BUS_USB
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};
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/* To shut up the GCC compilers. */
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struct cdrom;
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typedef struct {
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uint8_t attr, track,
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index,
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abs_m, abs_s, abs_f,
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rel_m, rel_s, rel_f;
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} subchannel_t;
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typedef struct {
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int number;
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uint8_t attr, m, s, f;
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} track_info_t;
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/* Define the various CD-ROM drive operations (ops). */
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typedef struct {
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void (*get_tracks)(struct cdrom *dev, int *first, int *last);
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void (*get_track_info)(struct cdrom *dev, uint32_t track, int end, track_info_t *ti);
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void (*get_subchannel)(struct cdrom *dev, uint32_t lba, subchannel_t *subc);
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int (*sector_size)(struct cdrom *dev, uint32_t lba);
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int (*read_sector)(struct cdrom *dev, int type, uint8_t *b, uint32_t lba);
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int (*track_type)(struct cdrom *dev, uint32_t lba);
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void (*exit)(struct cdrom *dev);
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} cdrom_ops_t;
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typedef struct cdrom {
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uint8_t id,
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res, res0, /* Reserved for other ID's. */
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res1,
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ide_channel, scsi_device_id,
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bus_type, /* 0 = ATAPI, 1 = SCSI */
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bus_mode, /* Bit 0 = PIO suported;
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Bit 1 = DMA supportd. */
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cd_status, /* Struct variable reserved for
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media status. */
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speed, cur_speed;
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FILE* img_fp;
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void *priv;
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wchar_t image_path[1024],
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prev_image_path[1024];
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uint32_t sound_on, cdrom_capacity,
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pad, seek_pos,
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seek_diff, cd_end;
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int host_drive, prev_host_drive,
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cd_buflen;
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const cdrom_ops_t *ops;
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void *image;
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void (*insert)(void *p);
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void (*close)(void *p);
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uint32_t (*get_volume)(void *p, int channel);
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uint32_t (*get_channel)(void *p, int channel);
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int16_t cd_buffer[BUF_SIZE];
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} cdrom_t;
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extern cdrom_t cdrom[CDROM_NUM];
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extern int cdrom_lba_to_msf_accurate(int lba);
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extern double cdrom_seek_time(cdrom_t *dev);
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extern void cdrom_stop(cdrom_t *dev);
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extern int cdrom_audio_callback(cdrom_t *dev, int16_t *output, int len);
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extern uint8_t cdrom_audio_play(cdrom_t *dev, uint32_t pos, uint32_t len, int ismsf);
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extern void cdrom_audio_pause_resume(cdrom_t *dev, uint8_t resume);
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extern uint8_t cdrom_get_current_subchannel(cdrom_t *dev, uint8_t *b, int msf);
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extern int cdrom_read_toc(cdrom_t *dev, unsigned char *b, int type,
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unsigned char start_track, int msf, int max_len);
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extern int cdrom_readsector_raw(cdrom_t *dev, uint8_t *buffer, int sector, int ismsf,
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int cdrom_sector_type, int cdrom_sector_flags, int *len);
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extern void cdrom_seek(cdrom_t *dev, uint32_t pos);
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extern void cdrom_close_handler(uint8_t id);
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extern void cdrom_insert(uint8_t id);
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extern void cdrom_eject(uint8_t id);
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extern void cdrom_reload(uint8_t id);
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extern int cdrom_image_open(cdrom_t *dev, const wchar_t *fn);
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extern void cdrom_image_close(cdrom_t *dev);
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extern void cdrom_image_reset(cdrom_t *dev);
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extern void cdrom_update_cdb(uint8_t *cdb, int lba_pos,
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int number_of_blocks);
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extern int find_cdrom_for_scsi_id(uint8_t scsi_id);
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extern void cdrom_close(void);
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extern void cdrom_global_init(void);
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extern void cdrom_global_reset(void);
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extern void cdrom_hard_reset(void);
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extern void scsi_cdrom_drive_reset(int c);
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#ifdef __cplusplus
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}
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#endif
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#endif /*EMU_CDROM_H*/
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