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258 lines
11 KiB
258 lines
11 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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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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* libata documentation is available via 'make {ps|pdf}docs', |
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* as Documentation/driver-api/libata.rst |
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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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/* 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 atomic_t ata_print_id; |
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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 const struct device_type ata_port_type; |
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extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); |
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#ifdef CONFIG_ATA_FORCE |
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extern void ata_force_cbl(struct ata_port *ap); |
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#else |
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static inline void ata_force_cbl(struct ata_port *ap) { } |
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#endif |
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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, int tag); |
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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, int class); |
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extern u64 ata_tf_read_block(const struct ata_taskfile *tf, |
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struct ata_device *dev); |
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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 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, u32 spd_limit); |
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extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); |
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extern unsigned int ata_dev_set_feature(struct ata_device *dev, |
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u8 enable, u8 feature); |
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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 atapi_check_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 bool ata_phys_link_online(struct ata_link *link); |
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extern bool ata_phys_link_offline(struct ata_link *link); |
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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 const char *sata_spd_string(unsigned int spd); |
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extern int ata_port_probe(struct ata_port *ap); |
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extern void __ata_port_probe(struct ata_port *ap); |
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extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, |
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u8 page, void *buf, unsigned int sectors); |
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#define to_ata_port(d) container_of(d, struct ata_port, tdev) |
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/* libata-sata.c */ |
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#ifdef CONFIG_SATA_HOST |
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int ata_sas_allocate_tag(struct ata_port *ap); |
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void ata_sas_free_tag(unsigned int tag, struct ata_port *ap); |
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#else |
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static inline int ata_sas_allocate_tag(struct ata_port *ap) |
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{ |
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return -EOPNOTSUPP; |
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} |
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static inline void ata_sas_free_tag(unsigned int tag, struct ata_port *ap) { } |
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#endif |
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/* libata-acpi.c */ |
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#ifdef CONFIG_ATA_ACPI |
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extern unsigned int ata_acpi_gtf_filter; |
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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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extern void ata_acpi_bind_port(struct ata_port *ap); |
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extern void ata_acpi_bind_dev(struct ata_device *dev); |
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extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev); |
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#else |
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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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static inline void ata_acpi_bind_port(struct ata_port *ap) {} |
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static inline void ata_acpi_bind_dev(struct ata_device *dev) {} |
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#endif |
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/* libata-scsi.c */ |
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extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
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const struct scsi_device *scsidev); |
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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_set_sense(struct ata_device *dev, |
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struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq); |
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extern void ata_scsi_set_sense_information(struct ata_device *dev, |
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struct scsi_cmnd *cmd, |
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const struct ata_taskfile *tf); |
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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 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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extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
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unsigned int id, u64 lun); |
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void ata_scsi_sdev_config(struct scsi_device *sdev); |
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int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev); |
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void ata_scsi_dump_cdb(struct ata_port *ap, struct scsi_cmnd *cmd); |
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int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev); |
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/* libata-eh.c */ |
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extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd); |
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extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd); |
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extern void ata_eh_acquire(struct ata_port *ap); |
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extern void ata_eh_release(struct ata_port *ap); |
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extern void ata_scsi_error(struct Scsi_Host *host); |
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extern void ata_eh_fastdrain_timerfn(struct timer_list *t); |
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extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); |
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extern void ata_dev_disable(struct ata_device *dev); |
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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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const char *ata_get_cmd_descript(u8 command); |
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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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extern int ata_ering_map(struct ata_ering *ering, |
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int (*map_fn)(struct ata_ering_entry *, void *), |
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void *arg); |
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extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key); |
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extern unsigned int atapi_eh_request_sense(struct ata_device *dev, |
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u8 *sense_buf, u8 dfl_sense_key); |
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/* libata-pmp.c */ |
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#ifdef CONFIG_SATA_PMP |
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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_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
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unsigned hints); |
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extern int sata_pmp_attach(struct ata_device *dev); |
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#else /* CONFIG_SATA_PMP */ |
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static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val) |
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{ |
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return -EINVAL; |
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} |
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static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val) |
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{ |
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return -EINVAL; |
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} |
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static inline int sata_pmp_set_lpm(struct ata_link *link, |
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enum ata_lpm_policy policy, unsigned hints) |
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{ |
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return -EINVAL; |
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} |
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static inline int sata_pmp_attach(struct ata_device *dev) |
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{ |
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return -EINVAL; |
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} |
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#endif /* CONFIG_SATA_PMP */ |
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/* libata-sff.c */ |
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#ifdef CONFIG_ATA_SFF |
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extern void ata_sff_flush_pio_task(struct ata_port *ap); |
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extern void ata_sff_port_init(struct ata_port *ap); |
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extern int ata_sff_init(void); |
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extern void ata_sff_exit(void); |
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#else /* CONFIG_ATA_SFF */ |
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static inline void ata_sff_flush_pio_task(struct ata_port *ap) |
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{ } |
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static inline void ata_sff_port_init(struct ata_port *ap) |
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{ } |
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static inline int ata_sff_init(void) |
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{ return 0; } |
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static inline void ata_sff_exit(void) |
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{ } |
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#endif /* CONFIG_ATA_SFF */ |
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/* libata-zpodd.c */ |
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#ifdef CONFIG_SATA_ZPODD |
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void zpodd_init(struct ata_device *dev); |
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void zpodd_exit(struct ata_device *dev); |
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static inline bool zpodd_dev_enabled(struct ata_device *dev) |
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{ |
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return dev->zpodd != NULL; |
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} |
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void zpodd_on_suspend(struct ata_device *dev); |
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bool zpodd_zpready(struct ata_device *dev); |
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void zpodd_enable_run_wake(struct ata_device *dev); |
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void zpodd_disable_run_wake(struct ata_device *dev); |
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void zpodd_post_poweron(struct ata_device *dev); |
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#else /* CONFIG_SATA_ZPODD */ |
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static inline void zpodd_init(struct ata_device *dev) {} |
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static inline void zpodd_exit(struct ata_device *dev) {} |
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static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; } |
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static inline void zpodd_on_suspend(struct ata_device *dev) {} |
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static inline bool zpodd_zpready(struct ata_device *dev) { return false; } |
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static inline void zpodd_enable_run_wake(struct ata_device *dev) {} |
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static inline void zpodd_disable_run_wake(struct ata_device *dev) {} |
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static inline void zpodd_post_poweron(struct ata_device *dev) {} |
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#endif /* CONFIG_SATA_ZPODD */ |
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#endif /* __LIBATA_H__ */
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