ide-cd.h revision ed820f19521de246c5b7978f8f78290733a55b20 
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
30enum {
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. */
67struct 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
76struct atapi_toc_header {
77	unsigned short toc_length;
78	byte first_track;
79	byte last_track;
80};
81
82struct 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
101struct 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. */
111struct 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 */
143void ide_cd_log_error(const char *, struct request *, struct request_sense *);
144
145/* ide-cd.c functions used by ide-cd_ioctl.c */
146int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
147		    unsigned *, struct request_sense *, int, unsigned int);
148int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
149int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
150void ide_cdrom_update_speed(ide_drive_t *, u8 *);
151int cdrom_check_status(ide_drive_t *, struct request_sense *);
152
153/* ide-cd_ioctl.c */
154int ide_cdrom_open_real(struct cdrom_device_info *, int);
155void ide_cdrom_release_real(struct cdrom_device_info *);
156int ide_cdrom_drive_status(struct cdrom_device_info *, int);
157int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
158int ide_cdrom_tray_move(struct cdrom_device_info *, int);
159int ide_cdrom_lock_door(struct cdrom_device_info *, int);
160int ide_cdrom_select_speed(struct cdrom_device_info *, int);
161int ide_cdrom_get_last_session(struct cdrom_device_info *,
162			       struct cdrom_multisession *);
163int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
164int ide_cdrom_reset(struct cdrom_device_info *cdi);
165int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
166int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
167
168#endif /* _IDE_CD_H */
169