mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 21:30:54 +07:00
968c496413
This removes the internal ide-cd buffer and falls back to read-ahead block layer capabilities. Thorough testing (cd burning, dvd read, raw read) gives with the bufferless mode marginally better performance in addition to simplified code. bufferless: dd: reading `/dev/hdc': Input/output error 6238+0 records in 6238+0 records out 204406784 bytes (204 MB) copied, 259.891 s, 787 kB/s real 4m21.598s user 0m0.014s sys 0m0.744s with the old buffer (2.6.25-rc1): dd: reading `/dev/hdc': Input/output error 6238+0 records in 6238+0 records out 204406784 bytes (204 MB) copied, 262.893 s, 778 kB/s real 4m22.938s user 0m0.009s sys 0m0.771s Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
169 lines
4.8 KiB
C
169 lines
4.8 KiB
C
/*
|
|
* 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;
|
|
|
|
/* 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 *);
|
|
|
|
/* ide-cd.c functions used by ide-cd_ioctl.c */
|
|
void ide_cd_init_rq(ide_drive_t *, struct request *);
|
|
int ide_cd_queue_pc(ide_drive_t *, struct request *);
|
|
int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
|
|
int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
|
|
void ide_cdrom_update_speed(ide_drive_t *, u8 *);
|
|
int cdrom_check_status(ide_drive_t *, struct request_sense *);
|
|
|
|
/* ide-cd_ioctl.c */
|
|
int ide_cdrom_open_real(struct cdrom_device_info *, int);
|
|
void ide_cdrom_release_real(struct cdrom_device_info *);
|
|
int ide_cdrom_drive_status(struct cdrom_device_info *, int);
|
|
int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
|
|
int ide_cdrom_tray_move(struct cdrom_device_info *, int);
|
|
int ide_cdrom_lock_door(struct cdrom_device_info *, int);
|
|
int ide_cdrom_select_speed(struct cdrom_device_info *, int);
|
|
int ide_cdrom_get_last_session(struct cdrom_device_info *,
|
|
struct cdrom_multisession *);
|
|
int ide_cdrom_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
|
|
int ide_cdrom_reset(struct cdrom_device_info *cdi);
|
|
int ide_cdrom_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
|
|
int ide_cdrom_packet(struct cdrom_device_info *, struct packet_command *);
|
|
|
|
#endif /* _IDE_CD_H */
|