forked from Minki/linux
aa2731ad9a
Factor out waiting logic (which is common to all ATA controllers) from ata_sff_wait_ready() into ata_wait_ready(). ata_wait_ready() takes @check_ready function pointer and uses it to poll for readiness. This allows non-SFF controllers to use ata_wait_ready() to wait for link readiness. This patch also implements ata_wait_after_reset() - generic version of ata_sff_wait_after_reset() - using ata_wait_ready(). ata_sff_wait_ready() is reimplemented using ata_wait_ready() and ata_sff_check_ready(). Functionality remains the same. Signed-off-by: Tejun Heo <htejun@gmail.com>
206 lines
9.0 KiB
C
206 lines
9.0 KiB
C
/*
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* libata.h - helper library for ATA
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*
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* Copyright 2003-2004 Red Hat, Inc. All rights reserved.
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* Copyright 2003-2004 Jeff Garzik
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* libata documentation is available via 'make {ps|pdf}docs',
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* as Documentation/DocBook/libata.*
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*
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*/
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#ifndef __LIBATA_H__
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#define __LIBATA_H__
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#define DRV_NAME "libata"
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#define DRV_VERSION "3.00" /* must be exactly four chars */
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struct ata_scsi_args {
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struct ata_device *dev;
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u16 *id;
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struct scsi_cmnd *cmd;
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void (*done)(struct scsi_cmnd *);
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};
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/* libata-core.c */
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enum {
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/* flags for ata_dev_read_id() */
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ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
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/* selector for ata_down_xfermask_limit() */
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ATA_DNXFER_PIO = 0, /* speed down PIO */
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ATA_DNXFER_DMA = 1, /* speed down DMA */
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ATA_DNXFER_40C = 2, /* apply 40c cable limit */
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ATA_DNXFER_FORCE_PIO = 3, /* force PIO */
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ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */
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ATA_DNXFER_QUIET = (1 << 31),
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};
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extern unsigned int ata_print_id;
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extern struct workqueue_struct *ata_aux_wq;
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extern int atapi_enabled;
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extern int atapi_passthru16;
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extern int libata_fua;
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extern int libata_noacpi;
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extern int libata_allow_tpm;
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extern void ata_force_cbl(struct ata_port *ap);
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extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
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extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
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extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
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extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
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u64 block, u32 n_block, unsigned int tf_flags,
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unsigned int tag);
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extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
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extern void ata_dev_disable(struct ata_device *dev);
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extern void ata_pio_queue_task(struct ata_port *ap, void *data,
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unsigned long delay);
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extern void ata_port_flush_task(struct ata_port *ap);
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extern unsigned ata_exec_internal(struct ata_device *dev,
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struct ata_taskfile *tf, const u8 *cdb,
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int dma_dir, void *buf, unsigned int buflen,
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unsigned long timeout);
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extern unsigned ata_exec_internal_sg(struct ata_device *dev,
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struct ata_taskfile *tf, const u8 *cdb,
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int dma_dir, struct scatterlist *sg,
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unsigned int n_elem, unsigned long timeout);
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extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
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extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
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int (*check_ready)(struct ata_link *link));
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extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
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unsigned int flags, u16 *id);
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extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
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extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
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unsigned int readid_flags);
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extern int ata_dev_configure(struct ata_device *dev);
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extern int sata_down_spd_limit(struct ata_link *link);
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extern int sata_set_spd_needed(struct ata_link *link);
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extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
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extern void ata_sg_clean(struct ata_queued_cmd *qc);
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extern void ata_qc_free(struct ata_queued_cmd *qc);
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extern void ata_qc_issue(struct ata_queued_cmd *qc);
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extern void __ata_qc_complete(struct ata_queued_cmd *qc);
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extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
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extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
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extern void ata_dev_init(struct ata_device *dev);
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extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
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extern int sata_link_init_spd(struct ata_link *link);
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extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
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extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
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extern struct ata_port *ata_port_alloc(struct ata_host *host);
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extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy);
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extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm);
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/* libata-acpi.c */
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#ifdef CONFIG_ATA_ACPI
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extern void ata_acpi_associate_sata_port(struct ata_port *ap);
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extern void ata_acpi_associate(struct ata_host *host);
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extern void ata_acpi_dissociate(struct ata_host *host);
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extern int ata_acpi_on_suspend(struct ata_port *ap);
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extern void ata_acpi_on_resume(struct ata_port *ap);
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extern int ata_acpi_on_devcfg(struct ata_device *dev);
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extern void ata_acpi_on_disable(struct ata_device *dev);
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extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
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#else
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static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
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static inline void ata_acpi_associate(struct ata_host *host) { }
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static inline void ata_acpi_dissociate(struct ata_host *host) { }
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static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
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static inline void ata_acpi_on_resume(struct ata_port *ap) { }
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static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
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static inline void ata_acpi_on_disable(struct ata_device *dev) { }
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static inline void ata_acpi_set_state(struct ata_port *ap,
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pm_message_t state) { }
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#endif
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/* libata-scsi.c */
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extern int ata_scsi_add_hosts(struct ata_host *host,
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struct scsi_host_template *sht);
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extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
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extern int ata_scsi_offline_dev(struct ata_device *dev);
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extern void ata_scsi_media_change_notify(struct ata_device *dev);
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extern void ata_scsi_hotplug(struct work_struct *work);
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extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
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unsigned int buflen);
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extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
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void (*done)(struct scsi_cmnd *),
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u8 asc, u8 ascq);
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extern void ata_scsi_set_sense(struct scsi_cmnd *cmd,
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u8 sk, u8 asc, u8 ascq);
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extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
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unsigned int (*actor) (struct ata_scsi_args *args,
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u8 *rbuf, unsigned int buflen));
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extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
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extern void ata_scsi_dev_rescan(struct work_struct *work);
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extern int ata_bus_probe(struct ata_port *ap);
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/* libata-pmp.c */
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extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
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extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
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extern int sata_pmp_attach(struct ata_device *dev);
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/* libata-eh.c */
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extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
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extern void ata_scsi_error(struct Scsi_Host *host);
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extern void ata_port_wait_eh(struct ata_port *ap);
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extern void ata_eh_fastdrain_timerfn(unsigned long arg);
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extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
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extern void ata_eh_detach_dev(struct ata_device *dev);
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extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
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unsigned int action);
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extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
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unsigned int action);
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extern void ata_eh_autopsy(struct ata_port *ap);
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extern void ata_eh_report(struct ata_port *ap);
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extern int ata_eh_reset(struct ata_link *link, int classify,
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ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
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ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
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extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
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extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
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ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
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ata_postreset_fn_t postreset,
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struct ata_link **r_failed_disk);
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extern void ata_eh_finish(struct ata_port *ap);
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/* libata-sff.c */
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extern void ata_dev_select(struct ata_port *ap, unsigned int device,
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unsigned int wait, unsigned int can_sleep);
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extern u8 ata_irq_on(struct ata_port *ap);
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extern void ata_pio_task(struct work_struct *work);
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#endif /* __LIBATA_H__ */
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