forked from luck/tmp_suning_uos_patched
c457ce874a
Preallocate a sense request in the ->do_request method and reinitialize
it only on demand, in case it's been consumed in the IRQ handler path.
The reason for this is that we don't want to be mapping rq to bio in
the IRQ path and introduce all kinds of unnecessary hacks to the block
layer.
tj: * Both user and kernel PC requests expect sense data to be stored
in separate storage other than drive->sense_data. Copy sense
data to rq->sense on completion if rq->sense is not NULL. This
fixes bogus sense data on PC requests.
As a result, remove cdrom_queue_request_sense.
CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/*
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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 SECTOR_BITS 9
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#ifndef SECTOR_SIZE
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#define SECTOR_SIZE (1 << SECTOR_BITS)
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#endif
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#define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_BITS)
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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 request_sense *, int, unsigned int);
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int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
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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 request_sense *);
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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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int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
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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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