1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 1996-98 Erik Andersen 4 * Copyright (C) 1998-2000 Jens Axboe 5 */ 6 #ifndef _IDE_CD_H 7 #define _IDE_CD_H 8 9 #include <linux/cdrom.h> 10 #include <asm/byteorder.h> 11 12 #define IDECD_DEBUG_LOG 0 13 14 #if IDECD_DEBUG_LOG 15 #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args) 16 #else 17 #define ide_debug_log(lvl, fmt, args...) do {} while (0) 18 #endif 19 20 #define ATAPI_WAIT_WRITE_BUSY (10 * HZ) 21 22 /************************************************************************/ 23 24 #define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_SHIFT) 25 #define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32) 26 27 /* Capabilities Page size including 8 bytes of Mode Page Header */ 28 #define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20) 29 #define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4 30 31 /* Structure of a MSF cdrom address. */ 32 struct atapi_msf { 33 u8 reserved; 34 u8 minute; 35 u8 second; 36 u8 frame; 37 }; 38 39 /* Space to hold the disk TOC. */ 40 #define MAX_TRACKS 99 41 struct atapi_toc_header { 42 unsigned short toc_length; 43 u8 first_track; 44 u8 last_track; 45 }; 46 47 struct atapi_toc_entry { 48 u8 reserved1; 49 #if defined(__BIG_ENDIAN_BITFIELD) 50 u8 adr : 4; 51 u8 control : 4; 52 #elif defined(__LITTLE_ENDIAN_BITFIELD) 53 u8 control : 4; 54 u8 adr : 4; 55 #else 56 #error "Please fix <asm/byteorder.h>" 57 #endif 58 u8 track; 59 u8 reserved2; 60 union { 61 unsigned lba; 62 struct atapi_msf msf; 63 } addr; 64 }; 65 66 struct atapi_toc { 67 int last_session_lba; 68 int xa_flag; 69 unsigned long capacity; 70 struct atapi_toc_header hdr; 71 struct atapi_toc_entry ent[MAX_TRACKS+1]; 72 /* One extra for the leadout. */ 73 }; 74 75 /* Extra per-device info for cdrom drives. */ 76 struct cdrom_info { 77 ide_drive_t *drive; 78 struct ide_driver *driver; 79 struct gendisk *disk; 80 struct device dev; 81 82 /* Buffer for table of contents. NULL if we haven't allocated 83 a TOC buffer for this device yet. */ 84 85 struct atapi_toc *toc; 86 87 u8 max_speed; /* Max speed of the drive. */ 88 u8 current_speed; /* Current speed of the drive. */ 89 90 /* Per-device info needed by cdrom.c generic driver. */ 91 struct cdrom_device_info devinfo; 92 93 unsigned long write_timeout; 94 }; 95 96 /* ide-cd_verbose.c */ 97 void ide_cd_log_error(const char *, struct request *, struct request_sense *); 98 99 /* ide-cd.c functions used by ide-cd_ioctl.c */ 100 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *, 101 unsigned *, struct scsi_sense_hdr *, int, req_flags_t); 102 int ide_cd_read_toc(ide_drive_t *); 103 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *); 104 void ide_cdrom_update_speed(ide_drive_t *, u8 *); 105 int cdrom_check_status(ide_drive_t *, struct scsi_sense_hdr *); 106 107 /* ide-cd_ioctl.c */ 108 int ide_cdrom_open_real(struct cdrom_device_info *, int); 109 void ide_cdrom_release_real(struct cdrom_device_info *); 110 int ide_cdrom_drive_status(struct cdrom_device_info *, int); 111 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *, 112 unsigned int clearing, int slot_nr); 113 int ide_cdrom_tray_move(struct cdrom_device_info *, int); 114 int ide_cdrom_lock_door(struct cdrom_device_info *, int); 115 int ide_cdrom_select_speed(struct cdrom_device_info *, int); 116 int ide_cdrom_get_last_session(struct cdrom_device_info *, 117 struct cdrom_multisession *); 118 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *); 119 int ide_cdrom_reset(struct cdrom_device_info *cdi); 120 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); 121 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *); 122 123 #endif /* _IDE_CD_H */ 124