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[mirror_ubuntu-artful-kernel.git] / drivers / ata / libata.h
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1da177e4 1/*
af36d7f0
JG		 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 *
1da177e4
LT		 26 */
27
28#ifndef __LIBATA_H__
29#define __LIBATA_H__
30
31#define DRV_NAME "libata"
633273a3 32#define DRV_VERSION "3.00" /* must be exactly four chars */
1da177e4
LT		 33
34struct ata_scsi_args {
9a3dccc4 35 struct ata_device *dev;
1da177e4
LT		 36 u16 *id;
37 struct scsi_cmnd *cmd;
38 void (*done)(struct scsi_cmnd *);
39};
40
57c9efdf
TH		 41static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset)
42{
43 if (reset == sata_std_hardreset)
44 return 1;
127102ae 45#ifdef CONFIG_ATA_SFF
57c9efdf
TH		 46 if (reset == sata_sff_hardreset)
47 return 1;
127102ae 48#endif
57c9efdf
TH		 49 return 0;
50}
51
1da177e4 52/* libata-core.c */
bff04647
TH		 53enum {
54 /* flags for ata_dev_read_id() */
55 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
458337db
TH		 56
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 */
458337db
TH		 63
64 ATA_DNXFER_QUIET = (1 << 31),
bff04647
TH		 65};
66
f3187195 67extern unsigned int ata_print_id;
453b07ac 68extern struct workqueue_struct *ata_aux_wq;
1623c81e 69extern int atapi_enabled;
baf4fdfa 70extern int atapi_passthru16;
c3c013a2 71extern int libata_fua;
d7d0dad6 72extern int libata_noacpi;
ae8d4ee7 73extern int libata_allow_tpm;
33267325 74extern void ata_force_cbl(struct ata_port *ap);
a5987e0a
TH		 75extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
76extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
3373efd8 77extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
bd056d7e
TH		 78extern 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);
35b649fe 81extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
3373efd8 82extern void ata_dev_disable(struct ata_device *dev);
624d5c51
TH		 83extern void ata_pio_queue_task(struct ata_port *ap, void *data,
84 unsigned long delay);
86e45b6b 85extern void ata_port_flush_task(struct ata_port *ap);
3373efd8 86extern unsigned ata_exec_internal(struct ata_device *dev,
1ad8e7f9 87 struct ata_taskfile *tf, const u8 *cdb,
2b789108
TH		 88 int dma_dir, void *buf, unsigned int buflen,
89 unsigned long timeout);
2432697b
TH		 90extern unsigned ata_exec_internal_sg(struct ata_device *dev,
91 struct ata_taskfile *tf, const u8 *cdb,
92 int dma_dir, struct scatterlist *sg,
2b789108 93 unsigned int n_elem, unsigned long timeout);
77b08fb5 94extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
aa2731ad
TH		 95extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
96 int (*check_ready)(struct ata_link *link));
a9beec95 97extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
bff04647 98 unsigned int flags, u16 *id);
fe30911b 99extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
422c9daa
TH		 100extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
101 unsigned int readid_flags);
efdaedc4 102extern int ata_dev_configure(struct ata_device *dev);
936fd732 103extern int sata_down_spd_limit(struct ata_link *link);
458337db 104extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
70e6ad0c 105extern void ata_sg_clean(struct ata_queued_cmd *qc);
1da177e4 106extern void ata_qc_free(struct ata_queued_cmd *qc);
8e0e694a 107extern void ata_qc_issue(struct ata_queued_cmd *qc);
f686bcb8 108extern void __ata_qc_complete(struct ata_queued_cmd *qc);
1da177e4 109extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
1da177e4 110extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
3ef3b43d 111extern void ata_dev_init(struct ata_device *dev);
fb7fd614
TH		 112extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
113extern int sata_link_init_spd(struct ata_link *link);
b095518e
JG		 114extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
115extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
f3187195 116extern struct ata_port *ata_port_alloc(struct ata_host *host);
ca77329f
KCA		 117extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy);
118extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm);
1da177e4 119
11ef697b 120/* libata-acpi.c */
e92351bb 121#ifdef CONFIG_ATA_ACPI
d0df8b5d 122extern void ata_acpi_associate_sata_port(struct ata_port *ap);
fafbae87 123extern void ata_acpi_associate(struct ata_host *host);
562f0c2d 124extern void ata_acpi_dissociate(struct ata_host *host);
64578a3d 125extern int ata_acpi_on_suspend(struct ata_port *ap);
6746544c 126extern void ata_acpi_on_resume(struct ata_port *ap);
562f0c2d
TH		 127extern int ata_acpi_on_devcfg(struct ata_device *dev);
128extern void ata_acpi_on_disable(struct ata_device *dev);
bd3adca5 129extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
11ef697b 130#else
d0df8b5d 131static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
fafbae87 132static inline void ata_acpi_associate(struct ata_host *host) { }
562f0c2d 133static inline void ata_acpi_dissociate(struct ata_host *host) { }
64578a3d 134static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
6746544c 135static inline void ata_acpi_on_resume(struct ata_port *ap) { }
562f0c2d
TH		 136static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
137static inline void ata_acpi_on_disable(struct ata_device *dev) { }
bd3adca5
SL		 138static inline void ata_acpi_set_state(struct ata_port *ap,
139 pm_message_t state) { }
11ef697b 140#endif
1da177e4
LT		 141
142/* libata-scsi.c */
f3187195
TH		 143extern int ata_scsi_add_hosts(struct ata_host *host,
144 struct scsi_host_template *sht);
1ae46317 145extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
0ea035a3 146extern int ata_scsi_offline_dev(struct ata_device *dev);
7d77b247 147extern void ata_scsi_media_change_notify(struct ata_device *dev);
65f27f38 148extern void ata_scsi_hotplug(struct work_struct *work);
7b70fc03 149extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
65f27f38 150extern void ata_scsi_dev_rescan(struct work_struct *work);
80289167 151extern int ata_bus_probe(struct ata_port *ap);
1da177e4 152
ece1d636
TH		 153/* libata-eh.c */
154extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
381544bb 155extern void ata_scsi_error(struct Scsi_Host *host);
c6cf9e99 156extern void ata_port_wait_eh(struct ata_port *ap);
5ddf24c5 157extern void ata_eh_fastdrain_timerfn(unsigned long arg);
f686bcb8 158extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
fb7fd614
TH		 159extern void ata_eh_detach_dev(struct ata_device *dev);
160extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
161 unsigned int action);
162extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
163 unsigned int action);
164extern void ata_eh_autopsy(struct ata_port *ap);
165extern void ata_eh_report(struct ata_port *ap);
166extern int ata_eh_reset(struct ata_link *link, int classify,
167 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
168 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
6f1d1e3a 169extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
fb7fd614
TH		 170extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
171 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
172 ata_postreset_fn_t postreset,
173 struct ata_link **r_failed_disk);
174extern void ata_eh_finish(struct ata_port *ap);
ece1d636 175
48515f6c 176/* libata-pmp.c */
88fcd562 177#ifdef CONFIG_SATA_PMP
48515f6c
TH		 178extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
179extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
180extern int sata_pmp_attach(struct ata_device *dev);
88fcd562
TH		 181#else /* CONFIG_SATA_PMP */
182static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
183{
184 return -EINVAL;
185}
186
187static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
188{
189 return -EINVAL;
190}
191
192static inline int sata_pmp_attach(struct ata_device *dev)
193{
194 return -EINVAL;
195}
196#endif /* CONFIG_SATA_PMP */
48515f6c 197
90088bb4 198/* libata-sff.c */
127102ae 199#ifdef CONFIG_ATA_SFF
624d5c51
TH		 200extern void ata_dev_select(struct ata_port *ap, unsigned int device,
201 unsigned int wait, unsigned int can_sleep);
90088bb4 202extern u8 ata_irq_on(struct ata_port *ap);
624d5c51 203extern void ata_pio_task(struct work_struct *work);
127102ae 204#endif /* CONFIG_ATA_SFF */
77a527ea 205
1da177e4 206#endif /* __LIBATA_H__ */
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