| 1 | /* |
| 2 | * Copyright (C) 1996-98 Erik Andersen |
| 3 | * Copyright (C) 1998-2000 Jens Axboe |
| 4 | */ |
| 5 | #ifndef _IDE_CD_H |
| 6 | #define _IDE_CD_H |
| 7 | |
| 8 | #include <linux/cdrom.h> |
| 9 | #include <asm/byteorder.h> |
| 10 | |
| 11 | /* |
| 12 | * typical timeout for packet command |
| 13 | */ |
| 14 | #define ATAPI_WAIT_PC (60 * HZ) |
| 15 | #define ATAPI_WAIT_WRITE_BUSY (10 * HZ) |
| 16 | |
| 17 | /************************************************************************/ |
| 18 | |
| 19 | #define SECTOR_BITS 9 |
| 20 | #ifndef SECTOR_SIZE |
| 21 | #define SECTOR_SIZE (1 << SECTOR_BITS) |
| 22 | #endif |
| 23 | #define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_BITS) |
| 24 | #define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32) |
| 25 | |
| 26 | /* Capabilities Page size including 8 bytes of Mode Page Header */ |
| 27 | #define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20) |
| 28 | #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4 |
| 29 | |
| 30 | enum { |
| 31 | /* Device sends an interrupt when ready for a packet command. */ |
| 32 | IDE_CD_FLAG_DRQ_INTERRUPT = (1 << 0), |
| 33 | /* Drive cannot lock the door. */ |
| 34 | IDE_CD_FLAG_NO_DOORLOCK = (1 << 1), |
| 35 | /* Drive cannot eject the disc. */ |
| 36 | IDE_CD_FLAG_NO_EJECT = (1 << 2), |
| 37 | /* Drive is a pre ATAPI 1.2 drive. */ |
| 38 | IDE_CD_FLAG_PRE_ATAPI12 = (1 << 3), |
| 39 | /* TOC addresses are in BCD. */ |
| 40 | IDE_CD_FLAG_TOCADDR_AS_BCD = (1 << 4), |
| 41 | /* TOC track numbers are in BCD. */ |
| 42 | IDE_CD_FLAG_TOCTRACKS_AS_BCD = (1 << 5), |
| 43 | /* |
| 44 | * Drive does not provide data in multiples of SECTOR_SIZE |
| 45 | * when more than one interrupt is needed. |
| 46 | */ |
| 47 | IDE_CD_FLAG_LIMIT_NFRAMES = (1 << 6), |
| 48 | /* Seeking in progress. */ |
| 49 | IDE_CD_FLAG_SEEKING = (1 << 7), |
| 50 | /* Driver has noticed a media change. */ |
| 51 | IDE_CD_FLAG_MEDIA_CHANGED = (1 << 8), |
| 52 | /* Saved TOC information is current. */ |
| 53 | IDE_CD_FLAG_TOC_VALID = (1 << 9), |
| 54 | /* We think that the drive door is locked. */ |
| 55 | IDE_CD_FLAG_DOOR_LOCKED = (1 << 10), |
| 56 | /* SET_CD_SPEED command is unsupported. */ |
| 57 | IDE_CD_FLAG_NO_SPEED_SELECT = (1 << 11), |
| 58 | IDE_CD_FLAG_VERTOS_300_SSD = (1 << 12), |
| 59 | IDE_CD_FLAG_VERTOS_600_ESD = (1 << 13), |
| 60 | IDE_CD_FLAG_SANYO_3CD = (1 << 14), |
| 61 | IDE_CD_FLAG_FULL_CAPS_PAGE = (1 << 15), |
| 62 | IDE_CD_FLAG_PLAY_AUDIO_OK = (1 << 16), |
| 63 | IDE_CD_FLAG_LE_SPEED_FIELDS = (1 << 17), |
| 64 | }; |
| 65 | |
| 66 | /* Structure of a MSF cdrom address. */ |
| 67 | struct atapi_msf { |
| 68 | byte reserved; |
| 69 | byte minute; |
| 70 | byte second; |
| 71 | byte frame; |
| 72 | }; |
| 73 | |
| 74 | /* Space to hold the disk TOC. */ |
| 75 | #define MAX_TRACKS 99 |
| 76 | struct atapi_toc_header { |
| 77 | unsigned short toc_length; |
| 78 | byte first_track; |
| 79 | byte last_track; |
| 80 | }; |
| 81 | |
| 82 | struct atapi_toc_entry { |
| 83 | byte reserved1; |
| 84 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 85 | __u8 adr : 4; |
| 86 | __u8 control : 4; |
| 87 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| 88 | __u8 control : 4; |
| 89 | __u8 adr : 4; |
| 90 | #else |
| 91 | #error "Please fix <asm/byteorder.h>" |
| 92 | #endif |
| 93 | byte track; |
| 94 | byte reserved2; |
| 95 | union { |
| 96 | unsigned lba; |
| 97 | struct atapi_msf msf; |
| 98 | } addr; |
| 99 | }; |
| 100 | |
| 101 | struct atapi_toc { |
| 102 | int last_session_lba; |
| 103 | int xa_flag; |
| 104 | unsigned long capacity; |
| 105 | struct atapi_toc_header hdr; |
| 106 | struct atapi_toc_entry ent[MAX_TRACKS+1]; |
| 107 | /* One extra for the leadout. */ |
| 108 | }; |
| 109 | |
| 110 | /* Extra per-device info for cdrom drives. */ |
| 111 | struct cdrom_info { |
| 112 | ide_drive_t *drive; |
| 113 | ide_driver_t *driver; |
| 114 | struct gendisk *disk; |
| 115 | struct kref kref; |
| 116 | |
| 117 | /* Buffer for table of contents. NULL if we haven't allocated |
| 118 | a TOC buffer for this device yet. */ |
| 119 | |
| 120 | struct atapi_toc *toc; |
| 121 | |
| 122 | /* The result of the last successful request sense command |
| 123 | on this device. */ |
| 124 | struct request_sense sense_data; |
| 125 | |
| 126 | struct request request_sense_request; |
| 127 | int dma; |
| 128 | unsigned long last_block; |
| 129 | unsigned long start_seek; |
| 130 | |
| 131 | unsigned int cd_flags; |
| 132 | |
| 133 | u8 max_speed; /* Max speed of the drive. */ |
| 134 | u8 current_speed; /* Current speed of the drive. */ |
| 135 | |
| 136 | /* Per-device info needed by cdrom.c generic driver. */ |
| 137 | struct cdrom_device_info devinfo; |
| 138 | |
| 139 | unsigned long write_timeout; |
| 140 | }; |
| 141 | |
| 142 | /* ide-cd_verbose.c */ |
| 143 | void ide_cd_log_error(const char *, struct request *, struct request_sense *); |
| 144 | |
| 145 | /* ide-cd.c functions used by ide-cd_ioctl.c */ |
| 146 | void ide_cd_init_rq(ide_drive_t *, struct request *); |
| 147 | int ide_cd_queue_pc(ide_drive_t *, struct request *); |
| 148 | int ide_cd_read_toc(ide_drive_t *, struct request_sense *); |
| 149 | int ide_cdrom_get_capabilities(ide_drive_t *, u8 *); |
| 150 | void ide_cdrom_update_speed(ide_drive_t *, u8 *); |
| 151 | int cdrom_check_status(ide_drive_t *, struct request_sense *); |
| 152 | |
| 153 | /* ide-cd_ioctl.c */ |
| 154 | int ide_cdrom_open_real(struct cdrom_device_info *, int); |
| 155 | void ide_cdrom_release_real(struct cdrom_device_info *); |
| 156 | int ide_cdrom_drive_status(struct cdrom_device_info *, int); |
| 157 | int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int); |
| 158 | int ide_cdrom_tray_move(struct cdrom_device_info *, int); |
| 159 | int ide_cdrom_lock_door(struct cdrom_device_info *, int); |
| 160 | int ide_cdrom_select_speed(struct cdrom_device_info *, int); |
| 161 | int ide_cdrom_get_last_session(struct cdrom_device_info *, |
| 162 | struct cdrom_multisession *); |
| 163 | int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); |
| 164 | int ide_cdrom_reset(struct cdrom_device_info *cdi); |
| 165 | int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); |
| 166 | int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *); |
| 167 | |
| 168 | #endif /* _IDE_CD_H */ |