tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define DRV_VERSION "3.00" /* must be exactly four chars */
33
34struct ata_scsi_args {
35 struct ata_device *dev;
36 u16 *id;
37 struct scsi_cmnd *cmd;
38 void (*done)(struct scsi_cmnd *);
39};
40
41static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset)
42{
43 if (reset == sata_std_hardreset)
44 return 1;
45#ifdef CONFIG_ATA_SFF
46 if (reset == sata_sff_hardreset)
47 return 1;
48#endif
49 return 0;
50}
51
52/* libata-core.c */
53enum {
54 /* flags for ata_dev_read_id() */
55 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
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 */
63
64 ATA_DNXFER_QUIET = (1 << 31),
65};
66
67extern unsigned int ata_print_id;
68extern struct workqueue_struct *ata_aux_wq;
69extern int atapi_passthru16;
70extern int libata_fua;
71extern int libata_noacpi;
72extern int libata_allow_tpm;
73extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
74extern void ata_force_cbl(struct ata_port *ap);
75extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
76extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
77extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
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);
81extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
82extern void ata_port_flush_task(struct ata_port *ap);
83extern unsigned ata_exec_internal(struct ata_device *dev,
84 struct ata_taskfile *tf, const u8 *cdb,
85 int dma_dir, void *buf, unsigned int buflen,
86 unsigned long timeout);
87extern unsigned ata_exec_internal_sg(struct ata_device *dev,
88 struct ata_taskfile *tf, const u8 *cdb,
89 int dma_dir, struct scatterlist *sg,
90 unsigned int n_elem, unsigned long timeout);
91extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
92extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
93 int (*check_ready)(struct ata_link *link));
94extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
95 unsigned int flags, u16 *id);
96extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
97extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
98 unsigned int readid_flags);
99extern int ata_dev_configure(struct ata_device *dev);
100extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
101extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
102extern void ata_sg_clean(struct ata_queued_cmd *qc);
103extern void ata_qc_free(struct ata_queued_cmd *qc);
104extern void ata_qc_issue(struct ata_queued_cmd *qc);
105extern void __ata_qc_complete(struct ata_queued_cmd *qc);
106extern int atapi_check_dma(struct ata_queued_cmd *qc);
107extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
108extern bool ata_phys_link_online(struct ata_link *link);
109extern bool ata_phys_link_offline(struct ata_link *link);
110extern void ata_dev_init(struct ata_device *dev);
111extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
112extern int sata_link_init_spd(struct ata_link *link);
113extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
114extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
115extern struct ata_port *ata_port_alloc(struct ata_host *host);
116extern 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);
118
119/* libata-acpi.c */
120#ifdef CONFIG_ATA_ACPI
121extern void ata_acpi_associate_sata_port(struct ata_port *ap);
122extern void ata_acpi_associate(struct ata_host *host);
123extern void ata_acpi_dissociate(struct ata_host *host);
124extern int ata_acpi_on_suspend(struct ata_port *ap);
125extern void ata_acpi_on_resume(struct ata_port *ap);
126extern int ata_acpi_on_devcfg(struct ata_device *dev);
127extern void ata_acpi_on_disable(struct ata_device *dev);
128extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
129#else
130static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
131static inline void ata_acpi_associate(struct ata_host *host) { }
132static inline void ata_acpi_dissociate(struct ata_host *host) { }
133static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
134static inline void ata_acpi_on_resume(struct ata_port *ap) { }
135static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
136static inline void ata_acpi_on_disable(struct ata_device *dev) { }
137static inline void ata_acpi_set_state(struct ata_port *ap,
138 pm_message_t state) { }
139#endif
140
141/* libata-scsi.c */
142extern int ata_scsi_add_hosts(struct ata_host *host,
143 struct scsi_host_template *sht);
144extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
145extern int ata_scsi_offline_dev(struct ata_device *dev);
146extern void ata_scsi_media_change_notify(struct ata_device *dev);
147extern void ata_scsi_hotplug(struct work_struct *work);
148extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
149extern void ata_scsi_dev_rescan(struct work_struct *work);
150extern int ata_bus_probe(struct ata_port *ap);
151
152/* libata-eh.c */
153extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
154extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
155extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
156extern void ata_scsi_error(struct Scsi_Host *host);
157extern void ata_port_wait_eh(struct ata_port *ap);
158extern void ata_eh_fastdrain_timerfn(unsigned long arg);
159extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
160extern void ata_dev_disable(struct ata_device *dev);
161extern void ata_eh_detach_dev(struct ata_device *dev);
162extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
163 unsigned int action);
164extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
165 unsigned int action);
166extern void ata_eh_autopsy(struct ata_port *ap);
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);
171extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
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);
177
178/* libata-pmp.c */
179#ifdef CONFIG_SATA_PMP
180extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
181extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
182extern int sata_pmp_attach(struct ata_device *dev);
183#else /* CONFIG_SATA_PMP */
184static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
185{
186 return -EINVAL;
187}
188
189static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
190{
191 return -EINVAL;
192}
193
194static inline int sata_pmp_attach(struct ata_device *dev)
195{
196 return -EINVAL;
197}
198#endif /* CONFIG_SATA_PMP */
199
200/* libata-sff.c */
201#ifdef CONFIG_ATA_SFF
202extern void ata_dev_select(struct ata_port *ap, unsigned int device,
203 unsigned int wait, unsigned int can_sleep);
204extern u8 ata_irq_on(struct ata_port *ap);
205extern void ata_pio_task(struct work_struct *work);
206#endif /* CONFIG_ATA_SFF */
207
208#endif /* __LIBATA_H__ */