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UBUNTU: Ubuntu-4.15.0-96.97
[mirror_ubuntu-bionic-kernel.git] / drivers / ata / libata.h
CommitLineData
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',
9bb9a39c 24 * as Documentation/driver-api/libata.rst
af36d7f0 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 33
1da177e4 34/* libata-core.c */
bff04647
TH		 35enum {
36 /* flags for ata_dev_read_id() */
37 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
458337db
TH		 38
39 /* selector for ata_down_xfermask_limit() */
40 ATA_DNXFER_PIO = 0, /* speed down PIO */
41 ATA_DNXFER_DMA = 1, /* speed down DMA */
42 ATA_DNXFER_40C = 2, /* apply 40c cable limit */
43 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */
44 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */
458337db
TH		 45
46 ATA_DNXFER_QUIET = (1 << 31),
bff04647
TH		 47};
48
85d6725b 49extern atomic_t ata_print_id;
baf4fdfa 50extern int atapi_passthru16;
c3c013a2 51extern int libata_fua;
d7d0dad6 52extern int libata_noacpi;
ae8d4ee7 53extern int libata_allow_tpm;
8df82c13 54extern const struct device_type ata_port_type;
b1c72916 55extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
33267325 56extern void ata_force_cbl(struct ata_port *ap);
a5987e0a
TH		 57extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
58extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
12cb5ce1 59extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag);
bd056d7e
TH		 60extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
61 u64 block, u32 n_block, unsigned int tf_flags,
8e061784 62 unsigned int tag, int class);
cffd1ee9
HR		 63extern u64 ata_tf_read_block(const struct ata_taskfile *tf,
64 struct ata_device *dev);
3373efd8 65extern unsigned ata_exec_internal(struct ata_device *dev,
1ad8e7f9 66 struct ata_taskfile *tf, const u8 *cdb,
2b789108
TH		 67 int dma_dir, void *buf, unsigned int buflen,
68 unsigned long timeout);
2432697b
TH		 69extern unsigned ata_exec_internal_sg(struct ata_device *dev,
70 struct ata_taskfile *tf, const u8 *cdb,
71 int dma_dir, struct scatterlist *sg,
2b789108 72 unsigned int n_elem, unsigned long timeout);
aa2731ad
TH		 73extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
74 int (*check_ready)(struct ata_link *link));
a9beec95 75extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
bff04647 76 unsigned int flags, u16 *id);
fe30911b 77extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
422c9daa
TH		 78extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
79 unsigned int readid_flags);
efdaedc4 80extern int ata_dev_configure(struct ata_device *dev);
a07d499b 81extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
458337db 82extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
1152b261
TH		 83extern unsigned int ata_dev_set_feature(struct ata_device *dev,
84 u8 enable, u8 feature);
8a8bc223 85extern void ata_qc_free(struct ata_queued_cmd *qc);
8e0e694a 86extern void ata_qc_issue(struct ata_queued_cmd *qc);
f686bcb8 87extern void __ata_qc_complete(struct ata_queued_cmd *qc);
5895ef9a 88extern int atapi_check_dma(struct ata_queued_cmd *qc);
1da177e4 89extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
b1c72916
TH		 90extern bool ata_phys_link_online(struct ata_link *link);
91extern bool ata_phys_link_offline(struct ata_link *link);
3ef3b43d 92extern void ata_dev_init(struct ata_device *dev);
fb7fd614
TH		 93extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
94extern int sata_link_init_spd(struct ata_link *link);
b095518e
JG		 95extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
96extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
f3187195 97extern struct ata_port *ata_port_alloc(struct ata_host *host);
d9027470 98extern const char *sata_spd_string(unsigned int spd);
238c9cf9 99extern int ata_port_probe(struct ata_port *ap);
9508a66f 100extern void __ata_port_probe(struct ata_port *ap);
f01f62c2
CH		 101extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
102 u8 page, void *buf, unsigned int sectors);
1da177e4 103
6b66d958
MG		 104#define to_ata_port(d) container_of(d, struct ata_port, tdev)
105
11ef697b 106/* libata-acpi.c */
e92351bb 107#ifdef CONFIG_ATA_ACPI
110f66d2 108extern unsigned int ata_acpi_gtf_filter;
562f0c2d 109extern void ata_acpi_dissociate(struct ata_host *host);
64578a3d 110extern int ata_acpi_on_suspend(struct ata_port *ap);
6746544c 111extern void ata_acpi_on_resume(struct ata_port *ap);
562f0c2d
TH		 112extern int ata_acpi_on_devcfg(struct ata_device *dev);
113extern void ata_acpi_on_disable(struct ata_device *dev);
bd3adca5 114extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
f1bc1e4c
AL		 115extern void ata_acpi_bind_port(struct ata_port *ap);
116extern void ata_acpi_bind_dev(struct ata_device *dev);
117extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
11ef697b 118#else
562f0c2d 119static inline void ata_acpi_dissociate(struct ata_host *host) { }
64578a3d 120static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
6746544c 121static inline void ata_acpi_on_resume(struct ata_port *ap) { }
562f0c2d
TH		 122static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
123static inline void ata_acpi_on_disable(struct ata_device *dev) { }
bd3adca5
SL		 124static inline void ata_acpi_set_state(struct ata_port *ap,
125 pm_message_t state) { }
f1bc1e4c
AL		 126static inline void ata_acpi_bind_port(struct ata_port *ap) {}
127static inline void ata_acpi_bind_dev(struct ata_device *dev) {}
11ef697b 128#endif
1da177e4
LT		 129
130/* libata-scsi.c */
f3187195
TH		 131extern int ata_scsi_add_hosts(struct ata_host *host,
132 struct scsi_host_template *sht);
1ae46317 133extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
0ea035a3 134extern int ata_scsi_offline_dev(struct ata_device *dev);
06dbde5f
HR		 135extern void ata_scsi_set_sense(struct ata_device *dev,
136 struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq);
492bf621
HR		 137extern void ata_scsi_set_sense_information(struct ata_device *dev,
138 struct scsi_cmnd *cmd,
139 const struct ata_taskfile *tf);
7d77b247 140extern void ata_scsi_media_change_notify(struct ata_device *dev);
65f27f38 141extern void ata_scsi_hotplug(struct work_struct *work);
7b70fc03 142extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
65f27f38 143extern void ata_scsi_dev_rescan(struct work_struct *work);
80289167 144extern int ata_bus_probe(struct ata_port *ap);
d9027470 145extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
9cb78c16 146 unsigned int id, u64 lun);
98bd4be1
SL		 147int ata_sas_allocate_tag(struct ata_port *ap);
148void ata_sas_free_tag(unsigned int tag, struct ata_port *ap);
d9027470 149
1da177e4 150
ece1d636 151/* libata-eh.c */
87fbc5a0
TH		 152extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
153extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
c0c362b6
TH		 154extern void ata_eh_acquire(struct ata_port *ap);
155extern void ata_eh_release(struct ata_port *ap);
381544bb 156extern void ata_scsi_error(struct Scsi_Host *host);
b93ab338 157extern void ata_eh_fastdrain_timerfn(struct timer_list *t);
f686bcb8 158extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
678afac6 159extern void ata_dev_disable(struct ata_device *dev);
fb7fd614
TH		 160extern void ata_eh_detach_dev(struct ata_device *dev);
161extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
162 unsigned int action);
163extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
164 unsigned int action);
165extern void ata_eh_autopsy(struct ata_port *ap);
6521148c 166const char *ata_get_cmd_descript(u8 command);
fb7fd614
TH		 167extern void ata_eh_report(struct ata_port *ap);
168extern int ata_eh_reset(struct ata_link *link, int classify,
169 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
170 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
6f1d1e3a 171extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
fb7fd614
TH		 172extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
173 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
174 ata_postreset_fn_t postreset,
175 struct ata_link **r_failed_disk);
176extern void ata_eh_finish(struct ata_port *ap);
d9027470
GG		 177extern int ata_ering_map(struct ata_ering *ering,
178 int (*map_fn)(struct ata_ering_entry *, void *),
179 void *arg);
3dc67440
AL		 180extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key);
181extern unsigned int atapi_eh_request_sense(struct ata_device *dev,
182 u8 *sense_buf, u8 dfl_sense_key);
ece1d636 183
48515f6c 184/* libata-pmp.c */
88fcd562 185#ifdef CONFIG_SATA_PMP
48515f6c
TH		 186extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
187extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
6c8ea89c
TH		 188extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
189 unsigned hints);
48515f6c 190extern int sata_pmp_attach(struct ata_device *dev);
88fcd562
TH		 191#else /* CONFIG_SATA_PMP */
192static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
193{
194 return -EINVAL;
195}
196
197static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
198{
199 return -EINVAL;
200}
201
6c8ea89c
TH		 202static inline int sata_pmp_set_lpm(struct ata_link *link,
203 enum ata_lpm_policy policy, unsigned hints)
204{
205 return -EINVAL;
206}
207
88fcd562
TH		 208static inline int sata_pmp_attach(struct ata_device *dev)
209{
210 return -EINVAL;
211}
212#endif /* CONFIG_SATA_PMP */
48515f6c 213
90088bb4 214/* libata-sff.c */
127102ae 215#ifdef CONFIG_ATA_SFF
c429137a 216extern void ata_sff_flush_pio_task(struct ata_port *ap);
270390e1
TH		 217extern void ata_sff_port_init(struct ata_port *ap);
218extern int ata_sff_init(void);
219extern void ata_sff_exit(void);
220#else /* CONFIG_ATA_SFF */
c429137a
TH		 221static inline void ata_sff_flush_pio_task(struct ata_port *ap)
222{ }
270390e1
TH		 223static inline void ata_sff_port_init(struct ata_port *ap)
224{ }
225static inline int ata_sff_init(void)
226{ return 0; }
227static inline void ata_sff_exit(void)
228{ }
127102ae 229#endif /* CONFIG_ATA_SFF */
77a527ea 230
afe75951
AL		 231/* libata-zpodd.c */
232#ifdef CONFIG_SATA_ZPODD
233void zpodd_init(struct ata_device *dev);
234void zpodd_exit(struct ata_device *dev);
235static inline bool zpodd_dev_enabled(struct ata_device *dev)
236{
237 return dev->zpodd != NULL;
238}
3dc67440 239void zpodd_on_suspend(struct ata_device *dev);
21334205
AL		 240bool zpodd_zpready(struct ata_device *dev);
241void zpodd_enable_run_wake(struct ata_device *dev);
242void zpodd_disable_run_wake(struct ata_device *dev);
243void zpodd_post_poweron(struct ata_device *dev);
afe75951
AL		 244#else /* CONFIG_SATA_ZPODD */
245static inline void zpodd_init(struct ata_device *dev) {}
246static inline void zpodd_exit(struct ata_device *dev) {}
247static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; }
3dc67440 248static inline void zpodd_on_suspend(struct ata_device *dev) {}
21334205
AL		 249static inline bool zpodd_zpready(struct ata_device *dev) { return false; }
250static inline void zpodd_enable_run_wake(struct ata_device *dev) {}
251static inline void zpodd_disable_run_wake(struct ata_device *dev) {}
252static inline void zpodd_post_poweron(struct ata_device *dev) {}
afe75951
AL		 253#endif /* CONFIG_SATA_ZPODD */
254
1da177e4 255#endif /* __LIBATA_H__ */
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