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