blob: 823e630963627f75e807a3af793457c8cbf84d6f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04002 * 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 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 */
27
28#ifndef __LIBATA_H__
29#define __LIBATA_H__
30
31#define DRV_NAME "libata"
Tejun Heo633273a32007-09-23 13:19:54 +090032#define DRV_VERSION "3.00" /* must be exactly four chars */
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34struct ata_scsi_args {
Tejun Heo9a3dccc2006-01-06 09:56:18 +010035 struct ata_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 u16 *id;
37 struct scsi_cmnd *cmd;
38 void (*done)(struct scsi_cmnd *);
39};
40
Tejun Heo57c9efd2008-04-07 22:47:19 +090041static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset)
42{
43 if (reset == sata_std_hardreset)
44 return 1;
Tejun Heo127102a2008-04-07 22:47:21 +090045#ifdef CONFIG_ATA_SFF
Tejun Heo57c9efd2008-04-07 22:47:19 +090046 if (reset == sata_sff_hardreset)
47 return 1;
Tejun Heo127102a2008-04-07 22:47:21 +090048#endif
Tejun Heo57c9efd2008-04-07 22:47:19 +090049 return 0;
50}
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052/* libata-core.c */
Tejun Heobff04642006-11-10 18:08:10 +090053enum {
54 /* flags for ata_dev_read_id() */
55 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
Tejun Heo458337d2007-02-02 16:22:30 +090056
57 /* selector for ata_down_xfermask_limit() */
58 ATA_DNXFER_PIO = 0, /* speed down PIO */
59 ATA_DNXFER_DMA = 1, /* speed down DMA */
60 ATA_DNXFER_40C = 2, /* apply 40c cable limit */
61 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */
62 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */
Tejun Heo458337d2007-02-02 16:22:30 +090063
64 ATA_DNXFER_QUIET = (1 << 31),
Tejun Heobff04642006-11-10 18:08:10 +090065};
66
Tejun Heof3187192007-04-17 23:44:07 +090067extern unsigned int ata_print_id;
Tejun Heo453b07a2006-05-31 18:27:42 +090068extern struct workqueue_struct *ata_aux_wq;
Mark Lordbaf4fdf2007-08-08 01:08:45 +090069extern int atapi_passthru16;
Jeff Garzikc3c013a2006-02-27 22:31:19 -050070extern int libata_fua;
Jeff Garzikd7d0dad2007-03-28 01:57:37 -040071extern int libata_noacpi;
Alan Coxae8d4ee2007-11-04 22:05:49 -050072extern int libata_allow_tpm;
Tejun Heob1c72912008-07-31 17:02:43 +090073extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
Tejun Heo33267322008-02-13 09:15:09 +090074extern void ata_force_cbl(struct ata_port *ap);
Tejun Heoa5987e02008-03-27 19:14:23 +090075extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
76extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
Tejun Heo8a8bc222008-11-10 14:48:21 +090077extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
Tejun Heobd056d72006-11-14 22:47:10 +090078extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
79 u64 block, u32 n_block, unsigned int tf_flags,
80 unsigned int tag);
Tejun Heo35b649f2006-11-14 22:37:35 +090081extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
Tejun Heo86e45b62006-03-05 15:29:09 +090082extern void ata_port_flush_task(struct ata_port *ap);
Tejun Heo3373efd2006-05-15 20:57:53 +090083extern unsigned ata_exec_internal(struct ata_device *dev,
Tejun Heo1ad8e7f2006-04-02 18:51:53 +090084 struct ata_taskfile *tf, const u8 *cdb,
Tejun Heo2b789102007-10-09 15:05:44 +090085 int dma_dir, void *buf, unsigned int buflen,
86 unsigned long timeout);
Tejun Heo24326972006-11-14 22:47:09 +090087extern unsigned ata_exec_internal_sg(struct ata_device *dev,
88 struct ata_taskfile *tf, const u8 *cdb,
89 int dma_dir, struct scatterlist *sg,
Tejun Heo2b789102007-10-09 15:05:44 +090090 unsigned int n_elem, unsigned long timeout);
Tejun Heo77b08fb2006-06-24 20:30:19 +090091extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
Tejun Heoaa2731a2008-04-07 22:47:19 +090092extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
93 int (*check_ready)(struct ata_link *link));
Tejun Heoa9beec92006-05-31 18:27:44 +090094extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
Tejun Heobff04642006-11-10 18:08:10 +090095 unsigned int flags, u16 *id);
Tejun Heofe309112007-05-15 03:28:15 +090096extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
Tejun Heo422c9da2007-09-23 13:14:12 +090097extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
98 unsigned int readid_flags);
Tejun Heoefdaedc2006-11-01 18:38:52 +090099extern int ata_dev_configure(struct ata_device *dev);
Tejun Heoa07d4992009-01-29 20:31:33 +0900100extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
Tejun Heo458337d2007-02-02 16:22:30 +0900101extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
Tejun Heo70e6ad02006-11-14 22:47:10 +0900102extern void ata_sg_clean(struct ata_queued_cmd *qc);
Tejun Heo8a8bc222008-11-10 14:48:21 +0900103extern void ata_qc_free(struct ata_queued_cmd *qc);
Tejun Heo8e0e6942006-03-31 20:41:11 +0900104extern void ata_qc_issue(struct ata_queued_cmd *qc);
Tejun Heof686bcb2006-05-15 20:58:05 +0900105extern void __ata_qc_complete(struct ata_queued_cmd *qc);
Tejun Heo5895ef92008-06-17 12:36:26 +0900106extern int atapi_check_dma(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
Tejun Heob1c72912008-07-31 17:02:43 +0900108extern bool ata_phys_link_online(struct ata_link *link);
109extern bool ata_phys_link_offline(struct ata_link *link);
Tejun Heo3ef3b432006-05-31 18:27:30 +0900110extern void ata_dev_init(struct ata_device *dev);
Tejun Heofb7fd612007-09-23 13:14:12 +0900111extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
112extern int sata_link_init_spd(struct ata_link *link);
Jeff Garzikb0955182005-05-12 15:45:22 -0400113extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
114extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
Tejun Heof3187192007-04-17 23:44:07 +0900115extern struct ata_port *ata_port_alloc(struct ata_host *host);
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400116extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy);
117extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
Kristen Carlson Accardi11ef6972006-09-28 11:29:01 -0700119/* libata-acpi.c */
Tejun Heoe92351b2007-05-05 23:50:38 +0900120#ifdef CONFIG_ATA_ACPI
Tejun Heo110f66d2009-09-16 04:17:28 +0900121extern unsigned int ata_acpi_gtf_filter;
122
Tejun Heod0df8b5d2007-09-23 13:19:54 +0900123extern void ata_acpi_associate_sata_port(struct ata_port *ap);
Tejun Heofafbae82007-05-15 03:28:16 +0900124extern void ata_acpi_associate(struct ata_host *host);
Tejun Heo562f0c22007-12-15 15:05:01 +0900125extern void ata_acpi_dissociate(struct ata_host *host);
Tejun Heo64578a32007-05-15 03:28:16 +0900126extern int ata_acpi_on_suspend(struct ata_port *ap);
Tejun Heo67465442007-05-15 03:28:16 +0900127extern void ata_acpi_on_resume(struct ata_port *ap);
Tejun Heo562f0c22007-12-15 15:05:01 +0900128extern int ata_acpi_on_devcfg(struct ata_device *dev);
129extern void ata_acpi_on_disable(struct ata_device *dev);
Shaohua Libd3adca2007-11-02 09:32:38 +0800130extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
Kristen Carlson Accardi11ef6972006-09-28 11:29:01 -0700131#else
Tejun Heod0df8b5d2007-09-23 13:19:54 +0900132static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
Tejun Heofafbae82007-05-15 03:28:16 +0900133static inline void ata_acpi_associate(struct ata_host *host) { }
Tejun Heo562f0c22007-12-15 15:05:01 +0900134static inline void ata_acpi_dissociate(struct ata_host *host) { }
Tejun Heo64578a32007-05-15 03:28:16 +0900135static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
Tejun Heo67465442007-05-15 03:28:16 +0900136static inline void ata_acpi_on_resume(struct ata_port *ap) { }
Tejun Heo562f0c22007-12-15 15:05:01 +0900137static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
138static inline void ata_acpi_on_disable(struct ata_device *dev) { }
Shaohua Libd3adca2007-11-02 09:32:38 +0800139static inline void ata_acpi_set_state(struct ata_port *ap,
140 pm_message_t state) { }
Kristen Carlson Accardi11ef6972006-09-28 11:29:01 -0700141#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143/* libata-scsi.c */
Tejun Heof3187192007-04-17 23:44:07 +0900144extern int ata_scsi_add_hosts(struct ata_host *host,
145 struct scsi_host_template *sht);
Tejun Heo1ae46312007-07-16 14:29:40 +0900146extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
Tejun Heo0ea035a2006-05-31 18:28:01 +0900147extern int ata_scsi_offline_dev(struct ata_device *dev);
Tejun Heo7d77b242007-09-23 13:14:13 +0900148extern void ata_scsi_media_change_notify(struct ata_device *dev);
David Howells65f27f32006-11-22 14:55:48 +0000149extern void ata_scsi_hotplug(struct work_struct *work);
Tejun Heo7b70fc02006-05-15 20:58:07 +0900150extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
David Howells65f27f32006-11-22 14:55:48 +0000151extern void ata_scsi_dev_rescan(struct work_struct *work);
Brian King80289162006-08-07 14:27:31 -0500152extern int ata_bus_probe(struct ata_port *ap);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
Tejun Heoece1d632006-04-02 18:51:53 +0900154/* libata-eh.c */
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900155extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
156extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
Jens Axboe242f9dc2008-09-14 05:55:09 -0700157extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
Jeff Garzik381544b2006-04-11 13:04:39 -0400158extern void ata_scsi_error(struct Scsi_Host *host);
Tejun Heoc6cf9e92006-05-31 18:27:27 +0900159extern void ata_port_wait_eh(struct ata_port *ap);
Tejun Heo5ddf24c2007-07-16 14:29:41 +0900160extern void ata_eh_fastdrain_timerfn(unsigned long arg);
Tejun Heof686bcb2006-05-15 20:58:05 +0900161extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
Tejun Heo678afac2009-01-29 20:31:30 +0900162extern void ata_dev_disable(struct ata_device *dev);
Tejun Heofb7fd612007-09-23 13:14:12 +0900163extern void ata_eh_detach_dev(struct ata_device *dev);
164extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
165 unsigned int action);
166extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
167 unsigned int action);
168extern void ata_eh_autopsy(struct ata_port *ap);
Robert Hancock65211482009-07-14 20:43:39 -0600169const char *ata_get_cmd_descript(u8 command);
Tejun Heofb7fd612007-09-23 13:14:12 +0900170extern void ata_eh_report(struct ata_port *ap);
171extern int ata_eh_reset(struct ata_link *link, int classify,
172 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
173 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
Tejun Heo6f1d1e32007-11-27 19:28:55 +0900174extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
Tejun Heofb7fd612007-09-23 13:14:12 +0900175extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
176 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
177 ata_postreset_fn_t postreset,
178 struct ata_link **r_failed_disk);
179extern void ata_eh_finish(struct ata_port *ap);
Tejun Heoece1d632006-04-02 18:51:53 +0900180
Tejun Heo48515f62008-04-07 22:47:21 +0900181/* libata-pmp.c */
Tejun Heo88fcd562008-04-07 22:47:22 +0900182#ifdef CONFIG_SATA_PMP
Tejun Heo48515f62008-04-07 22:47:21 +0900183extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
184extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
185extern int sata_pmp_attach(struct ata_device *dev);
Tejun Heo88fcd562008-04-07 22:47:22 +0900186#else /* CONFIG_SATA_PMP */
187static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
188{
189 return -EINVAL;
190}
191
192static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
193{
194 return -EINVAL;
195}
196
197static inline int sata_pmp_attach(struct ata_device *dev)
198{
199 return -EINVAL;
200}
201#endif /* CONFIG_SATA_PMP */
Tejun Heo48515f62008-04-07 22:47:21 +0900202
Tejun Heo90088bb2006-10-09 11:10:26 +0900203/* libata-sff.c */
Tejun Heo127102a2008-04-07 22:47:21 +0900204#ifdef CONFIG_ATA_SFF
Tejun Heo624d5c52008-03-25 22:16:41 +0900205extern void ata_dev_select(struct ata_port *ap, unsigned int device,
206 unsigned int wait, unsigned int can_sleep);
Tejun Heo90088bb2006-10-09 11:10:26 +0900207extern u8 ata_irq_on(struct ata_port *ap);
Tejun Heo624d5c52008-03-25 22:16:41 +0900208extern void ata_pio_task(struct work_struct *work);
Tejun Heo127102a2008-04-07 22:47:21 +0900209#endif /* CONFIG_ATA_SFF */
Adrian Bunk77a527e2007-01-30 00:59:17 -0800210
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211#endif /* __LIBATA_H__ */