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e7d0748dd7
There is a lot of needless struct request_sense usage in the CDROM code. These can all be struct scsi_sense_hdr instead, to avoid any confusion over their respective structure sizes. This patch is a lot of noise changing "sense" to "sshdr", but the final code is more readable to distinguish between "sense" meaning "struct request_sense" and "sshdr" meaning "struct scsi_sense_hdr". Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
123 lines
3.4 KiB
C
123 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 1996-98 Erik Andersen
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* Copyright (C) 1998-2000 Jens Axboe
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*/
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#ifndef _IDE_CD_H
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#define _IDE_CD_H
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#include <linux/cdrom.h>
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#include <asm/byteorder.h>
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#define IDECD_DEBUG_LOG 0
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#if IDECD_DEBUG_LOG
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#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)
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#else
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#define ide_debug_log(lvl, fmt, args...) do {} while (0)
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#endif
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#define ATAPI_WAIT_WRITE_BUSY (10 * HZ)
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/************************************************************************/
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#define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_SHIFT)
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#define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32)
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/* Capabilities Page size including 8 bytes of Mode Page Header */
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#define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20)
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#define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4
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/* Structure of a MSF cdrom address. */
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struct atapi_msf {
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u8 reserved;
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u8 minute;
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u8 second;
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u8 frame;
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};
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/* Space to hold the disk TOC. */
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#define MAX_TRACKS 99
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struct atapi_toc_header {
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unsigned short toc_length;
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u8 first_track;
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u8 last_track;
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};
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struct atapi_toc_entry {
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u8 reserved1;
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#if defined(__BIG_ENDIAN_BITFIELD)
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u8 adr : 4;
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u8 control : 4;
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#elif defined(__LITTLE_ENDIAN_BITFIELD)
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u8 control : 4;
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u8 adr : 4;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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u8 track;
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u8 reserved2;
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union {
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unsigned lba;
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struct atapi_msf msf;
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} addr;
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};
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struct atapi_toc {
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int last_session_lba;
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int xa_flag;
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unsigned long capacity;
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struct atapi_toc_header hdr;
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struct atapi_toc_entry ent[MAX_TRACKS+1];
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/* One extra for the leadout. */
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};
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/* Extra per-device info for cdrom drives. */
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struct cdrom_info {
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ide_drive_t *drive;
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struct ide_driver *driver;
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struct gendisk *disk;
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struct device dev;
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/* Buffer for table of contents. NULL if we haven't allocated
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a TOC buffer for this device yet. */
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struct atapi_toc *toc;
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u8 max_speed; /* Max speed of the drive. */
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u8 current_speed; /* Current speed of the drive. */
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/* Per-device info needed by cdrom.c generic driver. */
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struct cdrom_device_info devinfo;
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unsigned long write_timeout;
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};
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/* ide-cd_verbose.c */
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void ide_cd_log_error(const char *, struct request *, struct request_sense *);
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/* ide-cd.c functions used by ide-cd_ioctl.c */
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int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
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unsigned *, struct scsi_sense_hdr *, int, req_flags_t);
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int ide_cd_read_toc(ide_drive_t *);
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int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
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void ide_cdrom_update_speed(ide_drive_t *, u8 *);
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int cdrom_check_status(ide_drive_t *, struct scsi_sense_hdr *);
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/* ide-cd_ioctl.c */
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int ide_cdrom_open_real(struct cdrom_device_info *, int);
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void ide_cdrom_release_real(struct cdrom_device_info *);
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int ide_cdrom_drive_status(struct cdrom_device_info *, int);
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unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
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unsigned int clearing, int slot_nr);
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int ide_cdrom_tray_move(struct cdrom_device_info *, int);
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int ide_cdrom_lock_door(struct cdrom_device_info *, int);
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int ide_cdrom_select_speed(struct cdrom_device_info *, int);
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int ide_cdrom_get_last_session(struct cdrom_device_info *,
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struct cdrom_multisession *);
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int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
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int ide_cdrom_reset(struct cdrom_device_info *cdi);
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int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
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int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
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#endif /* _IDE_CD_H */
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