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ide-cd.h
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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 {
40 };
41 
42 /* Space to hold the disk TOC. */
43 #define MAX_TRACKS 99
45  unsigned short toc_length;
48 };
49 
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
63  union {
64  unsigned lba;
65  struct atapi_msf msf;
66  } addr;
67 };
68 
69 struct atapi_toc {
71  int xa_flag;
72  unsigned long capacity;
75  /* One extra for the leadout. */
76 };
77 
78 /* Extra per-device info for cdrom drives. */
79 struct cdrom_info {
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  u8 max_speed; /* Max speed of the drive. */
91  u8 current_speed; /* Current speed of the drive. */
92 
93  /* Per-device info needed by cdrom.c generic driver. */
95 
96  unsigned long write_timeout;
97 };
98 
99 /* ide-cd_verbose.c */
100 void ide_cd_log_error(const char *, struct request *, struct request_sense *);
101 
102 /* ide-cd.c functions used by ide-cd_ioctl.c */
103 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
104  unsigned *, struct request_sense *, int, unsigned int);
105 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
109 
110 /* ide-cd_ioctl.c */
111 int ide_cdrom_open_real(struct cdrom_device_info *, int);
113 int ide_cdrom_drive_status(struct cdrom_device_info *, int);
114 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
115  unsigned int clearing, int slot_nr);
116 int ide_cdrom_tray_move(struct cdrom_device_info *, int);
117 int ide_cdrom_lock_door(struct cdrom_device_info *, int);
118 int ide_cdrom_select_speed(struct cdrom_device_info *, int);
120  struct cdrom_multisession *);
121 int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
122 int ide_cdrom_reset(struct cdrom_device_info *cdi);
123 int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
124 int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
125 
126 #endif /* _IDE_CD_H */