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 #define IDECD_DEBUG_LOG 0 12 13 #if IDECD_DEBUG_LOG 14 #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args) 15 #else 16 #define ide_debug_log(lvl, fmt, args...) do {} while (0) 17 #endif 18 19 #define ATAPI_WAIT_WRITE_BUSY (10 * HZ) 20 21 /************************************************************************/ 22 23 #define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_SHIFT) 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 /* Structure of a MSF cdrom address. */ 31 struct atapi_msf { 32 u8 reserved; 33 u8 minute; 34 u8 second; 35 u8 frame; 36 }; 37 38 /* Space to hold the disk TOC. */ 39 #define MAX_TRACKS 99 40 struct atapi_toc_header { 41 unsigned short toc_length; 42 u8 first_track; 43 u8 last_track; 44 }; 45 46 struct atapi_toc_entry { 47 u8 reserved1; 48 #if defined(__BIG_ENDIAN_BITFIELD) 49 u8 adr : 4; 50 u8 control : 4; 51 #elif defined(__LITTLE_ENDIAN_BITFIELD) 52 u8 control : 4; 53 u8 adr : 4; 54 #else 55 #error "Please fix <asm/byteorder.h>" 56 #endif 57 u8 track; 58 u8 reserved2; 59 union { 60 unsigned lba; 61 struct atapi_msf msf; 62 } addr; 63 }; 64 65 struct atapi_toc { 66 int last_session_lba; 67 int xa_flag; 68 unsigned long capacity; 69 struct atapi_toc_header hdr; 70 struct atapi_toc_entry ent[MAX_TRACKS+1]; 71 /* One extra for the leadout. */ 72 }; 73 74 /* Extra per-device info for cdrom drives. */ 75 struct cdrom_info { 76 ide_drive_t *drive; 77 struct ide_driver *driver; 78 struct gendisk *disk; 79 struct device dev; 80 81 /* Buffer for table of contents. NULL if we haven't allocated 82 a TOC buffer for this device yet. */ 83 84 struct atapi_toc *toc; 85 86 u8 max_speed; /* Max speed of the drive. */ 87 u8 current_speed; /* Current speed of the drive. */ 88 89 /* Per-device info needed by cdrom.c generic driver. */ 90 struct cdrom_device_info devinfo; 91 92 unsigned long write_timeout; 93 }; 94 95 /* ide-cd_verbose.c */ 96 void ide_cd_log_error(const char *, struct request *, struct request_sense *); 97 98 /* ide-cd.c functions used by ide-cd_ioctl.c */ 99 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *, 100 unsigned *, struct request_sense *, int, unsigned int); 101 int ide_cd_read_toc(ide_drive_t *, struct request_sense *); 102 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *); 103 void ide_cdrom_update_speed(ide_drive_t *, u8 *); 104 int cdrom_check_status(ide_drive_t *, struct request_sense *); 105 106 /* ide-cd_ioctl.c */ 107 int ide_cdrom_open_real(struct cdrom_device_info *, int); 108 void ide_cdrom_release_real(struct cdrom_device_info *); 109 int ide_cdrom_drive_status(struct cdrom_device_info *, int); 110 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *, 111 unsigned int clearing, int slot_nr); 112 int ide_cdrom_tray_move(struct cdrom_device_info *, int); 113 int ide_cdrom_lock_door(struct cdrom_device_info *, int); 114 int ide_cdrom_select_speed(struct cdrom_device_info *, int); 115 int ide_cdrom_get_last_session(struct cdrom_device_info *, 116 struct cdrom_multisession *); 117 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); 118 int ide_cdrom_reset(struct cdrom_device_info *cdi); 119 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); 120 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *); 121 122 #endif /* _IDE_CD_H */ 123