Overhauled and unified CD-ROM emulation;
Four CD-ROM drives are now emulated; ATAPI DMA is now emulated; Unified CD-ROM pass through to host drive handling; Applied all (applicable) mainline PCem commits.
This commit is contained in:
OBattler
219
src/cdrom.h
219
src/cdrom.h
@@ -2,34 +2,203 @@
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#define __CDROM_H__
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/*CD-ROM stuff*/
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#define CDROM_NUM 4
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#define CDROM_PHASE_IDLE 0
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#define CDROM_PHASE_COMMAND 1
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#define CDROM_PHASE_COMPLETE 2
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#define CDROM_PHASE_DATA_IN 3
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#define CDROM_PHASE_DATA_IN_DMA 4
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#define CDROM_PHASE_DATA_OUT 5
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#define CDROM_PHASE_DATA_OUT_DMA 6
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#define CDROM_PHASE_ERROR 0x80
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#define BUF_SIZE 32768
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#define CDROM_ISO 200
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#define IDE_TIME (5 * 100 * (1 << TIMER_SHIFT))
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#define CDROM_TIME (5 * 100 * (1 << TIMER_SHIFT))
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typedef struct CDROM
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{
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int (*ready)(void);
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int (*medium_changed)(void);
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int (*readtoc)(uint8_t *b, uint8_t starttrack, int msf, int maxlen, int single);
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int (*readtoc_session)(uint8_t *b, int msf, int maxlen);
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int (*readtoc_raw)(uint8_t *b, int msf, int maxlen);
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uint8_t (*getcurrentsubchannel)(uint8_t *b, int msf);
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void (*read_capacity)(uint8_t *b);
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void (*read_subchannel)(uint8_t *in_cdb, uint8_t *b);
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void (*read_header)(uint8_t *in_cdb, uint8_t *b);
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void (*read_disc_information)(uint8_t *b);
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int (*read_track_information)(uint8_t *in_cdb, uint8_t *b);
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int (*sector_data_type)(int sector, int ismsf);
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void (*readsector_raw)(uint8_t *b, int sector, int ismsf);
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void (*playaudio)(uint32_t pos, uint32_t len, int ismsf);
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void (*seek)(uint32_t pos);
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void (*load)(void);
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void (*eject)(void);
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void (*pause)(void);
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void (*resume)(void);
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uint32_t (*size)(void);
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int (*status)(void);
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int (*is_track_audio)(uint32_t pos, int ismsf);
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void (*stop)(void);
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void (*exit)(void);
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int (*ready)(uint8_t id);
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int (*medium_changed)(uint8_t id);
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void (*audio_callback)(uint8_t id, int16_t *output, int len);
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void (*audio_stop)(uint8_t id);
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int (*readtoc)(uint8_t id, uint8_t *b, uint8_t starttrack, int msf, int maxlen, int single);
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int (*readtoc_session)(uint8_t id, uint8_t *b, int msf, int maxlen);
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int (*readtoc_raw)(uint8_t id, uint8_t *b, int msf, int maxlen);
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uint8_t (*getcurrentsubchannel)(uint8_t id, uint8_t *b, int msf);
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int (*pass_through)(uint8_t id, uint8_t *in_cdb, uint8_t *b, uint32_t *len);
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int (*sector_data_type)(uint8_t id, int sector, int ismsf);
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int (*readsector_raw)(uint8_t id, uint8_t *buffer, int sector, int ismsf, int cdrom_sector_type, int cdrom_sector_flags, int *len);
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void (*playaudio)(uint8_t id, uint32_t pos, uint32_t len, int ismsf);
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void (*load)(uint8_t id);
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void (*eject)(uint8_t id);
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void (*pause)(uint8_t id);
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void (*resume)(uint8_t id);
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uint32_t (*size)(uint8_t id);
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int (*status)(uint8_t id);
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int (*is_track_audio)(uint8_t id, uint32_t pos, int ismsf);
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void (*stop)(uint8_t id);
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void (*exit)(uint8_t id);
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} CDROM;
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extern CDROM *cdrom;
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typedef struct __attribute__((__packed__))
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{
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uint8_t previous_command;
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int toctimes;
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int is_dma;
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int requested_blocks; /* This will be set to something other than 1 when block reads are implemented. */
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int current_page_code;
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int current_page_len;
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int current_page_pos;
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int mode_select_phase;
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int total_length;
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int written_length;
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int do_page_save;
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uint8_t error;
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uint8_t features;
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uint16_t request_length;
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uint8_t status;
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uint8_t phase;
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uint32_t sector_pos;
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uint32_t sector_len;
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uint32_t packet_len;
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int packet_status;
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uint8_t atapi_cdb[16];
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uint8_t current_cdb[16];
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uint32_t pos;
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int callback;
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int data_pos;
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int cdb_len_setting;
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int cdb_len;
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int cd_status;
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int prev_status;
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int unit_attention;
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uint8_t sense[18];
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int request_pos;
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uint16_t buffer[390144];
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int times;
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uint32_t seek_pos;
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int total_read;
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int block_total;
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int all_blocks_total;
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int old_len;
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} cdrom_t;
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extern cdrom_t cdrom[CDROM_NUM];
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typedef struct __attribute__((__packed__))
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{
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int enabled;
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int max_blocks_at_once;
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CDROM *handler;
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int host_drive;
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int prev_host_drive;
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uint8_t bus_type; /* 0 = ATAPI, 1 = SCSI */
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uint8_t bus_mode; /* Bit 0 = PIO suported;
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Bit 1 = DMA supportd. */
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uint8_t check_on_execution; /* 0 = Not Ready/Unit Attention checkeck is performed on the controller's side before command execution;
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1 = Not Ready/Unit Attention checkeck is performed on command execution. */
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uint8_t ide_channel;
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uint8_t scsi_device_id;
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uint8_t sound_on;
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} cdrom_drive_t;
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extern cdrom_drive_t cdrom_drives[CDROM_NUM];
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extern uint8_t atapi_cdrom_drives[8];
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extern uint8_t scsi_cdrom_drives[16];
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extern int (*ide_bus_master_read)(int channel, uint8_t *data, int transfer_length);
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extern int (*ide_bus_master_write)(int channel, uint8_t *data, int transfer_length);
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extern void (*ide_bus_master_set_irq)(int channel);
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typedef struct
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{
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uint32_t last_block;
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uint64_t image_size;
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int iso_inited;
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char iso_path[1024];
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FILE* iso_image;
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int iso_changed;
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uint32_t cd_pos;
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uint32_t cd_end;
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} cdrom_iso_t;
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cdrom_iso_t cdrom_iso[CDROM_NUM];
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typedef struct
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{
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uint32_t last_block;
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uint32_t cdrom_capacity;
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int ioctl_inited;
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char ioctl_path[8];
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int tocvalid;
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int cd_state;
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uint32_t cd_end;
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int16_t cd_buffer[BUF_SIZE];
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int cd_buflen;
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} cdrom_ioctl_t;
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void ioctl_close(uint8_t id);
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cdrom_ioctl_t cdrom_ioctl[CDROM_NUM];
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uint32_t cdrom_mode_sense_get_channel(uint8_t id, int channel);
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uint32_t cdrom_mode_sense_get_volume(uint8_t id, int channel);
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void build_atapi_cdrom_map();
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void build_scsi_cdrom_map();
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int cdrom_CDROM_PHASE_to_scsi(uint8_t id);
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int cdrom_atapi_phase_to_scsi(uint8_t id);
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void cdrom_command(uint8_t id, uint8_t *cdb);
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int cdrom_phase_callback(uint8_t id);
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uint32_t cdrom_read(uint8_t channel);
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int cdrom_write(uint8_t channel, uint16_t val);
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int cdrom_lba_to_msf_accurate(int lba);
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void cdrom_reset(uint8_t id);
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void cdrom_set_signature(int id);
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#define cdrom_sense_error cdrom[id].sense[0]
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#define cdrom_sense_key cdrom[id].sense[2]
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#define cdrom_asc cdrom[id].sense[12]
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#define cdrom_ascq cdrom[id].sense[12]
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#define cdrom_drive cdrom_drives[id].host_drive
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#endif
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