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 SECTOR_BITS 9 24 #ifndef SECTOR_SIZE 25 #define SECTOR_SIZE (1 << SECTOR_BITS) 26 #endif 27 #define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_BITS) 28 #define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32) 29 30 /* Capabilities Page size including 8 bytes of Mode Page Header */ 31 #define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20) 32 #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4 33 34 /* Structure of a MSF cdrom address. */ 35 struct atapi_msf { 36 u8 reserved; 37 u8 minute; 38 u8 second; 39 u8 frame; 40 }; 41 42 /* Space to hold the disk TOC. */ 43 #define MAX_TRACKS 99 44 struct atapi_toc_header { 45 unsigned short toc_length; 46 u8 first_track; 47 u8 last_track; 48 }; 49 50 struct atapi_toc_entry { 51 u8 reserved1; 52 #if defined(__BIG_ENDIAN_BITFIELD) 53 u8 adr : 4; 54 u8 control : 4; 55 #elif defined(__LITTLE_ENDIAN_BITFIELD) 56 u8 control : 4; 57 u8 adr : 4; 58 #else 59 #error "Please fix <asm/byteorder.h>" 60 #endif 61 u8 track; 62 u8 reserved2; 63 union { 64 unsigned lba; 65 struct atapi_msf msf; 66 } addr; 67 }; 68 69 struct atapi_toc { 70 int last_session_lba; 71 int xa_flag; 72 unsigned long capacity; 73 struct atapi_toc_header hdr; 74 struct atapi_toc_entry ent[MAX_TRACKS+1]; 75 /* One extra for the leadout. */ 76 }; 77 78 /* Extra per-device info for cdrom drives. */ 79 struct cdrom_info { 80 ide_drive_t *drive; 81 struct ide_driver *driver; 82 struct gendisk *disk; 83 struct device dev; 84 85 /* Buffer for table of contents. NULL if we haven't allocated 86 a TOC buffer for this device yet. */ 87 88 struct atapi_toc *toc; 89 90 /* The result of the last successful request sense command 91 on this device. */ 92 struct request_sense sense_data; 93 94 struct request request_sense_request; 95 96 u8 max_speed; /* Max speed of the drive. */ 97 u8 current_speed; /* Current speed of the drive. */ 98 99 /* Per-device info needed by cdrom.c generic driver. */ 100 struct cdrom_device_info devinfo; 101 102 unsigned long write_timeout; 103 }; 104 105 /* ide-cd_verbose.c */ 106 void ide_cd_log_error(const char *, struct request *, struct request_sense *); 107 108 /* ide-cd.c functions used by ide-cd_ioctl.c */ 109 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *, 110 unsigned *, struct request_sense *, int, unsigned int); 111 int ide_cd_read_toc(ide_drive_t *, struct request_sense *); 112 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *); 113 void ide_cdrom_update_speed(ide_drive_t *, u8 *); 114 int cdrom_check_status(ide_drive_t *, struct request_sense *); 115 116 /* ide-cd_ioctl.c */ 117 int ide_cdrom_open_real(struct cdrom_device_info *, int); 118 void ide_cdrom_release_real(struct cdrom_device_info *); 119 int ide_cdrom_drive_status(struct cdrom_device_info *, int); 120 int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int); 121 int ide_cdrom_tray_move(struct cdrom_device_info *, int); 122 int ide_cdrom_lock_door(struct cdrom_device_info *, int); 123 int ide_cdrom_select_speed(struct cdrom_device_info *, int); 124 int ide_cdrom_get_last_session(struct cdrom_device_info *, 125 struct cdrom_multisession *); 126 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); 127 int ide_cdrom_reset(struct cdrom_device_info *cdi); 128 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); 129 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *); 130 131 #endif /* _IDE_CD_H */ 132