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NetBSD/sys/dev/scsipi/scsipi_cd.h
christos d5272d5b35 PR/34202: Dave Huang: Accessing cd device on alpha causes kernel trap 
From the PR:
  Since struct scsipi_read_discinfo_data is an odd number of bytes long
  (35 bytes), ti ends up being unaligned. wdc_datain_pio() uses
  bus_space_read_multi_4() to read the response from the drive, and
  since ti is unaligned, it causes an unaligned access fault.

Add __aligned__(4) to all the structures.
2006-11-30 16:23:20 +00:00

288 lines
7.4 KiB
C
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/* $NetBSD: scsipi_cd.h,v 1.15 2006/11/30 16:23:20 christos Exp $ */
/*
* Written by Julian Elischer (julian@tfs.com)
* for TRW Financial Systems.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*/
/*
* Define two bits always in the same place in byte 2 (flag byte)
*/
#define CD_RELADDR 0x01
#define CD_MSF 0x02
/*
* SCSI and SCSI-like command format
*/
#define LOAD_UNLOAD 0xa6
struct scsipi_load_unload {
u_int8_t opcode;
u_int8_t unused1[3];
u_int8_t options;
u_int8_t unused2[3];
u_int8_t slot;
u_int8_t unused3[3];
} __attribute__((__packed__, __aligned__(4)));
#define PAUSE 0x4b /* cdrom pause in 'play audio' mode */
struct scsipi_pause {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t unused[6];
u_int8_t resume;
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define PA_PAUSE 0x00
#define PA_RESUME 0x01
#define PLAY_MSF 0x47 /* cdrom play Min,Sec,Frames mode */
struct scsipi_play_msf {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t unused;
u_int8_t start_m;
u_int8_t start_s;
u_int8_t start_f;
u_int8_t end_m;
u_int8_t end_s;
u_int8_t end_f;
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define PLAY 0x45 /* cdrom play 'play audio' mode */
struct scsipi_play {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t blk_addr[4];
u_int8_t unused;
u_int8_t xfer_len[2];
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define READ_HEADER 0x44 /* cdrom read header */
struct scsipi_read_header {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t blk_addr[4];
u_int8_t unused;
u_int8_t data_len[2];
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define READ_SUBCHANNEL 0x42 /* cdrom read Subchannel */
struct scsipi_read_subchannel {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t byte3;
#define SRS_SUBQ 0x40
u_int8_t subchan_format;
u_int8_t unused[2];
u_int8_t track;
u_int8_t data_len[2];
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define READ_TOC 0x43 /* cdrom read TOC */
struct scsipi_read_toc {
u_int8_t opcode;
u_int8_t addr_mode;
u_int8_t resp_format;
u_int8_t unused[3];
u_int8_t from_track; /* session nr in format 2 */
u_int8_t data_len[2];
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
struct scsipi_toc_header {
uint8_t length[2];
uint8_t first; /* track or session */
uint8_t last;
} __attribute__((__packed__, __aligned__(4)));
/* read TOC form 0 result entries */
struct scsipi_toc_formatted {
uint8_t unused1;
uint8_t adrcontol;
uint8_t tracknr;
uint8_t unused2;
uint8_t msf_lba[4]; /* union msf_lba from cdio.h */
} __attribute__((__packed__, __aligned__(4)));
/* read TOC form 1 result entries */
struct scsipi_toc_msinfo {
uint8_t unused1;
uint8_t adrcontol;
uint8_t tracknr; /* first track last compl. session */
uint8_t unused2;
uint8_t msf_lba[4]; /* union msf_lba from cdio.h */
} __attribute__((__packed__, __aligned__(4)));
/* read TOC form 2 result entries */
struct scsipi_toc_rawtoc {
uint8_t sessionnr;
uint8_t adrcontrol;
uint8_t tno;
uint8_t point;
uint8_t min;
uint8_t sec;
uint8_t frame;
uint8_t zero; /* zero/unused */
uint8_t pmin;
uint8_t psec;
uint8_t pframe;
} __attribute__((__packed__, __aligned__(4)));
/* read TOC form 3, 4 and 5 obmitted yet */
#define GET_CONFIGURATION 0x46 /* Get configuration */
#define GET_CONF_NO_FEATURES_LEN 8
struct scsipi_get_configuration {
uint8_t opcode;
uint8_t request_type;
uint8_t start_at_feature[2];
uint8_t unused[3];
uint8_t data_len[2];
uint8_t control;
} __attribute__((__packed__, __aligned__(4)));
struct scsipi_get_conf_data {
uint8_t data_len[4];
uint8_t unused[2];
uint8_t mmc_profile[2]; /* current mmc profile for disk */
uint8_t feature_desc[1]; /* feature descriptors follow */
} __attribute__((__packed__, __aligned__(4)));
struct scsipi_get_conf_feature { /* feature descriptor */
uint8_t featurecode[2];
uint8_t flags;
uint8_t additional_length; /* length of feature dependent */
uint8_t feature_dependent[256];
} __attribute__((__packed__, __aligned__(4)));
#define FEATUREFLAG_CURRENT 1
#define FEATUREFLAG_PERSISTENT 2
#define READ_DISCINFO 0x51
struct scsipi_read_discinfo {
uint8_t opcode;
uint8_t unused[6];
uint8_t data_len[2];
uint8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define READ_DISCINFO_SMALLSIZE 12
#define READ_DISCINFO_BIGSIZE 34 /* + entries */
struct scsipi_read_discinfo_data {
uint8_t data_len[2];
uint8_t disc_state;
uint8_t first_track;
uint8_t num_sessions_lsb;
uint8_t first_track_last_session_lsb;
uint8_t last_track_last_session_lsb;
uint8_t disc_state2;
uint8_t disc_type;
uint8_t num_sessions_msb;
uint8_t first_track_last_session_msb;
uint8_t last_track_last_session_msb;
uint8_t discid[4];
uint8_t last_session_leadin_hmsf[4];
uint8_t last_possible_start_leadout_hmsf[4];
uint8_t disc_bar_code[8];
uint8_t application_code;
uint8_t num_opc_table_entries;
uint8_t opc_table_entries[1]; /* opc table entries follow */
} __attribute__((__packed__, __aligned__(4)));
#define READ_TRACKINFO 0x52
struct scsipi_read_trackinfo {
uint8_t opcode;
uint8_t addr_type;
uint8_t address[4];
uint8_t nothing;
uint8_t data_len[2];
uint8_t control;
} __attribute__((__packed__, __aligned__(4)));
#define READ_TRACKINFO_ADDR_LBA 0
#define READ_TRACKINFO_ADDR_TRACK 1
#define READ_TRACKINFO_ADDR_SESS 2
struct scsipi_read_trackinfo_data {
uint8_t data_len[2];
uint8_t track_lsb;
uint8_t session_lsb;
uint8_t unused1;
uint8_t track_info_1;
uint8_t track_info_2;
uint8_t data_valid;
uint8_t track_start[4];
uint8_t next_writable[4];
uint8_t free_blocks[4];
uint8_t packet_size[4];
uint8_t track_size[4];
uint8_t last_recorded[4];
uint8_t track_msb;
uint8_t session_msb;
uint8_t unused2[2];
} __attribute__((__packed__, __aligned__(4)));
#define READ_TRACKINFO_RETURNSIZE 36
#define READ_CD_CAPACITY 0x25 /* slightly different from disk */
struct scsipi_read_cd_capacity {
u_int8_t opcode;
u_int8_t byte2;
u_int8_t addr[4];
u_int8_t unused[3];
u_int8_t control;
} __attribute__((__packed__, __aligned__(4)));
struct scsipi_read_cd_cap_data {
u_int8_t addr[4];
u_int8_t length[4];
} __attribute__((__packed__, __aligned__(4)));
/* mod pages common to scsi and atapi */
struct cd_audio_page {
u_int8_t pg_code;
#define AUDIO_PAGE 0x0e
u_int8_t pg_length;
u_int8_t flags;
#define CD_PA_SOTC 0x02
#define CD_PA_IMMED 0x04
u_int8_t unused[2];
u_int8_t format_lba; /* valid only for SCSI CDs */
#define CD_PA_FORMAT_LBA 0x0F
#define CD_PA_APR_VALID 0x80
u_int8_t lb_per_sec[2];
struct port_control {
u_int8_t channels;
#define CHANNEL 0x0F
#define CHANNEL_0 1
#define CHANNEL_1 2
#define CHANNEL_2 4
#define CHANNEL_3 8
#define LEFT_CHANNEL CHANNEL_0
#define RIGHT_CHANNEL CHANNEL_1
#define MUTE_CHANNEL 0x0
#define BOTH_CHANNEL LEFT_CHANNEL | RIGHT_CHANNEL
u_int8_t volume;
} port[4];
#define LEFT_PORT 0
#define RIGHT_PORT 1
};
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