diff options
Diffstat (limited to 'drivers/ata/libata.h')
| -rw-r--r-- | drivers/ata/libata.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h new file mode 100644 index 0000000..fe2839e --- /dev/null +++ b/drivers/ata/libata.h @@ -0,0 +1,210 @@ +/* + * libata.h - helper library for ATA + * + * Copyright 2003-2004 Red Hat, Inc. All rights reserved. + * Copyright 2003-2004 Jeff Garzik + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * libata documentation is available via 'make {ps|pdf}docs', + * as Documentation/DocBook/libata.* + * + */ + +#ifndef __LIBATA_H__ +#define __LIBATA_H__ + +#define DRV_NAME "libata" +#define DRV_VERSION "3.00" /* must be exactly four chars */ + +struct ata_scsi_args { + struct ata_device *dev; + u16 *id; + struct scsi_cmnd *cmd; + void (*done)(struct scsi_cmnd *); +}; + +static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset) +{ + if (reset == sata_std_hardreset) + return 1; +#ifdef CONFIG_ATA_SFF + if (reset == sata_sff_hardreset) + return 1; +#endif + return 0; +} + +/* libata-core.c */ +enum { + /* flags for ata_dev_read_id() */ + ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */ + + /* selector for ata_down_xfermask_limit() */ + ATA_DNXFER_PIO = 0, /* speed down PIO */ + ATA_DNXFER_DMA = 1, /* speed down DMA */ + ATA_DNXFER_40C = 2, /* apply 40c cable limit */ + ATA_DNXFER_FORCE_PIO = 3, /* force PIO */ + ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */ + + ATA_DNXFER_QUIET = (1 << 31), +}; + +extern unsigned int ata_print_id; +extern struct workqueue_struct *ata_aux_wq; +extern int atapi_passthru16; +extern int libata_fua; +extern int libata_noacpi; +extern int libata_allow_tpm; +extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); +extern void ata_force_cbl(struct ata_port *ap); +extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); +extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); +extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); +extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, + u64 block, u32 n_block, unsigned int tf_flags, + unsigned int tag); +extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev); +extern void ata_dev_disable(struct ata_device *dev); +extern void ata_pio_queue_task(struct ata_port *ap, void *data, + unsigned long delay); +extern void ata_port_flush_task(struct ata_port *ap); +extern unsigned ata_exec_internal(struct ata_device *dev, + struct ata_taskfile *tf, const u8 *cdb, + int dma_dir, void *buf, unsigned int buflen, + unsigned long timeout); +extern unsigned ata_exec_internal_sg(struct ata_device *dev, + struct ata_taskfile *tf, const u8 *cdb, + int dma_dir, struct scatterlist *sg, + unsigned int n_elem, unsigned long timeout); +extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd); +extern int ata_wait_ready(struct ata_link *link, unsigned long deadline, + int (*check_ready)(struct ata_link *link)); +extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, + unsigned int flags, u16 *id); +extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); +extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, + unsigned int readid_flags); +extern int ata_dev_configure(struct ata_device *dev); +extern int sata_down_spd_limit(struct ata_link *link); +extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); +extern void ata_sg_clean(struct ata_queued_cmd *qc); +extern void ata_qc_free(struct ata_queued_cmd *qc); +extern void ata_qc_issue(struct ata_queued_cmd *qc); +extern void __ata_qc_complete(struct ata_queued_cmd *qc); +extern int atapi_check_dma(struct ata_queued_cmd *qc); +extern void swap_buf_le16(u16 *buf, unsigned int buf_words); +extern bool ata_phys_link_online(struct ata_link *link); +extern bool ata_phys_link_offline(struct ata_link *link); +extern void ata_dev_init(struct ata_device *dev); +extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp); +extern int sata_link_init_spd(struct ata_link *link); +extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); +extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); +extern struct ata_port *ata_port_alloc(struct ata_host *host); +extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy); +extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm); + +/* libata-acpi.c */ +#ifdef CONFIG_ATA_ACPI +extern void ata_acpi_associate_sata_port(struct ata_port *ap); +extern void ata_acpi_associate(struct ata_host *host); +extern void ata_acpi_dissociate(struct ata_host *host); +extern int ata_acpi_on_suspend(struct ata_port *ap); +extern void ata_acpi_on_resume(struct ata_port *ap); +extern int ata_acpi_on_devcfg(struct ata_device *dev); +extern void ata_acpi_on_disable(struct ata_device *dev); +extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state); +#else +static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { } +static inline void ata_acpi_associate(struct ata_host *host) { } +static inline void ata_acpi_dissociate(struct ata_host *host) { } +static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } +static inline void ata_acpi_on_resume(struct ata_port *ap) { } +static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; } +static inline void ata_acpi_on_disable(struct ata_device *dev) { } +static inline void ata_acpi_set_state(struct ata_port *ap, + pm_message_t state) { } +#endif + +/* libata-scsi.c */ +extern int ata_scsi_add_hosts(struct ata_host *host, + struct scsi_host_template *sht); +extern void ata_scsi_scan_host(struct ata_port *ap, int sync); +extern int ata_scsi_offline_dev(struct ata_device *dev); +extern void ata_scsi_media_change_notify(struct ata_device *dev); +extern void ata_scsi_hotplug(struct work_struct *work); +extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); +extern void ata_scsi_dev_rescan(struct work_struct *work); +extern int ata_bus_probe(struct ata_port *ap); + +/* libata-eh.c */ +extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd); +extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd); +extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); +extern void ata_scsi_error(struct Scsi_Host *host); +extern void ata_port_wait_eh(struct ata_port *ap); +extern void ata_eh_fastdrain_timerfn(unsigned long arg); +extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); +extern void ata_eh_detach_dev(struct ata_device *dev); +extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, + unsigned int action); +extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, + unsigned int action); +extern void ata_eh_autopsy(struct ata_port *ap); +extern void ata_eh_report(struct ata_port *ap); +extern int ata_eh_reset(struct ata_link *link, int classify, + ata_prereset_fn_t prereset, ata_reset_fn_t softreset, + ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); +extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); +extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, + ata_reset_fn_t softreset, ata_reset_fn_t hardreset, + ata_postreset_fn_t postreset, + struct ata_link **r_failed_disk); +extern void ata_eh_finish(struct ata_port *ap); + +/* libata-pmp.c */ +#ifdef CONFIG_SATA_PMP +extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val); +extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val); +extern int sata_pmp_attach(struct ata_device *dev); +#else /* CONFIG_SATA_PMP */ +static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val) +{ + return -EINVAL; +} + +static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val) +{ + return -EINVAL; +} + +static inline int sata_pmp_attach(struct ata_device *dev) +{ + return -EINVAL; +} +#endif /* CONFIG_SATA_PMP */ + +/* libata-sff.c */ +#ifdef CONFIG_ATA_SFF +extern void ata_dev_select(struct ata_port *ap, unsigned int device, + unsigned int wait, unsigned int can_sleep); +extern u8 ata_irq_on(struct ata_port *ap); +extern void ata_pio_task(struct work_struct *work); +#endif /* CONFIG_ATA_SFF */ + +#endif /* __LIBATA_H__ */ |
