libata.h revision 5ddf24c5ea9d715dc4f5d5d5dd1c9337d90466dc
1/* 2 * libata.h - helper library for ATA 3 * 4 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 5 * Copyright 2003-2004 Jeff Garzik 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2, or (at your option) 11 * any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; see the file COPYING. If not, write to 20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 21 * 22 * 23 * libata documentation is available via 'make {ps|pdf}docs', 24 * as Documentation/DocBook/libata.* 25 * 26 */ 27 28#ifndef __LIBATA_H__ 29#define __LIBATA_H__ 30 31#define DRV_NAME "libata" 32 33struct ata_scsi_args { 34 struct ata_device *dev; 35 u16 *id; 36 struct scsi_cmnd *cmd; 37 void (*done)(struct scsi_cmnd *); 38}; 39 40/* libata-core.c */ 41enum { 42 /* flags for ata_dev_read_id() */ 43 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */ 44 45 /* selector for ata_down_xfermask_limit() */ 46 ATA_DNXFER_PIO = 0, /* speed down PIO */ 47 ATA_DNXFER_DMA = 1, /* speed down DMA */ 48 ATA_DNXFER_40C = 2, /* apply 40c cable limit */ 49 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */ 50 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */ 51 52 ATA_DNXFER_QUIET = (1 << 31), 53}; 54 55extern unsigned int ata_print_id; 56extern struct workqueue_struct *ata_aux_wq; 57extern int atapi_enabled; 58extern int atapi_dmadir; 59extern int libata_fua; 60extern int libata_noacpi; 61extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); 62extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, 63 u64 block, u32 n_block, unsigned int tf_flags, 64 unsigned int tag); 65extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev); 66extern void ata_dev_disable(struct ata_device *dev); 67extern void ata_port_flush_task(struct ata_port *ap); 68extern unsigned ata_exec_internal(struct ata_device *dev, 69 struct ata_taskfile *tf, const u8 *cdb, 70 int dma_dir, void *buf, unsigned int buflen); 71extern unsigned ata_exec_internal_sg(struct ata_device *dev, 72 struct ata_taskfile *tf, const u8 *cdb, 73 int dma_dir, struct scatterlist *sg, 74 unsigned int n_elem); 75extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd); 76extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, 77 unsigned int flags, u16 *id); 78extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); 79extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags); 80extern int ata_dev_configure(struct ata_device *dev); 81extern int sata_down_spd_limit(struct ata_port *ap); 82extern int sata_set_spd_needed(struct ata_port *ap); 83extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); 84extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev); 85extern void ata_sg_clean(struct ata_queued_cmd *qc); 86extern void ata_qc_free(struct ata_queued_cmd *qc); 87extern void ata_qc_issue(struct ata_queued_cmd *qc); 88extern void __ata_qc_complete(struct ata_queued_cmd *qc); 89extern int ata_check_atapi_dma(struct ata_queued_cmd *qc); 90extern void ata_dev_select(struct ata_port *ap, unsigned int device, 91 unsigned int wait, unsigned int can_sleep); 92extern void swap_buf_le16(u16 *buf, unsigned int buf_words); 93extern int ata_flush_cache(struct ata_device *dev); 94extern void ata_dev_init(struct ata_device *dev); 95extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); 96extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); 97extern struct ata_port *ata_port_alloc(struct ata_host *host); 98 99/* libata-acpi.c */ 100#ifdef CONFIG_ATA_ACPI 101extern void ata_acpi_associate(struct ata_host *host); 102extern int ata_acpi_on_suspend(struct ata_port *ap); 103extern void ata_acpi_on_resume(struct ata_port *ap); 104extern int ata_acpi_on_devcfg(struct ata_device *adev); 105#else 106static inline void ata_acpi_associate(struct ata_host *host) { } 107static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } 108static inline void ata_acpi_on_resume(struct ata_port *ap) { } 109static inline int ata_acpi_on_devcfg(struct ata_device *adev) { return 0; } 110#endif 111 112/* libata-scsi.c */ 113extern int ata_scsi_add_hosts(struct ata_host *host, 114 struct scsi_host_template *sht); 115extern void ata_scsi_scan_host(struct ata_port *ap, int sync); 116extern int ata_scsi_offline_dev(struct ata_device *dev); 117extern void ata_scsi_hotplug(struct work_struct *work); 118extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, 119 unsigned int buflen); 120 121extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf, 122 unsigned int buflen); 123 124extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, 125 unsigned int buflen); 126extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf, 127 unsigned int buflen); 128extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf, 129 unsigned int buflen); 130extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf, 131 unsigned int buflen); 132extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, 133 unsigned int buflen); 134extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, 135 unsigned int buflen); 136extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, 137 unsigned int buflen); 138extern void ata_scsi_badcmd(struct scsi_cmnd *cmd, 139 void (*done)(struct scsi_cmnd *), 140 u8 asc, u8 ascq); 141extern void ata_scsi_set_sense(struct scsi_cmnd *cmd, 142 u8 sk, u8 asc, u8 ascq); 143extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args, 144 unsigned int (*actor) (struct ata_scsi_args *args, 145 u8 *rbuf, unsigned int buflen)); 146extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); 147extern void ata_scsi_dev_rescan(struct work_struct *work); 148extern int ata_bus_probe(struct ata_port *ap); 149 150/* libata-eh.c */ 151extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); 152extern void ata_scsi_error(struct Scsi_Host *host); 153extern void ata_port_wait_eh(struct ata_port *ap); 154extern void ata_eh_fastdrain_timerfn(unsigned long arg); 155extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); 156 157/* libata-sff.c */ 158extern u8 ata_irq_on(struct ata_port *ap); 159 160 161#endif /* __LIBATA_H__ */ 162