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
34 struct ata_scsi_args {
35 struct ata_device *dev;
36 u16 *id;
37 struct scsi_cmnd *cmd;
38 void (*done)(struct scsi_cmnd *);
39 };
40
41 /* libata-core.c */
42 enum {
43 /* flags for ata_dev_read_id() */
44 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
45
46 /* selector for ata_down_xfermask_limit() */
47 ATA_DNXFER_PIO = 0, /* speed down PIO */
48 ATA_DNXFER_DMA = 1, /* speed down DMA */
49 ATA_DNXFER_40C = 2, /* apply 40c cable limit */
50 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */
51 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */
52
53 ATA_DNXFER_QUIET = (1 << 31),
54 };
55
56 extern unsigned int ata_print_id;
57 extern struct workqueue_struct *ata_aux_wq;
58 extern int atapi_enabled;
59 extern int atapi_passthru16;
60 extern int libata_fua;
61 extern int libata_noacpi;
62 extern int libata_allow_tpm;
63 extern void ata_force_cbl(struct ata_port *ap);
64 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
65 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
66 u64 block, u32 n_block, unsigned int tf_flags,
67 unsigned int tag);
68 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
69 extern void ata_dev_disable(struct ata_device *dev);
70 extern void ata_port_flush_task(struct ata_port *ap);
71 extern unsigned ata_exec_internal(struct ata_device *dev,
72 struct ata_taskfile *tf, const u8 *cdb,
73 int dma_dir, void *buf, unsigned int buflen,
74 unsigned long timeout);
75 extern unsigned ata_exec_internal_sg(struct ata_device *dev,
76 struct ata_taskfile *tf, const u8 *cdb,
77 int dma_dir, struct scatterlist *sg,
78 unsigned int n_elem, unsigned long timeout);
79 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
80 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
81 unsigned int flags, u16 *id);
82 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
83 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
84 unsigned int readid_flags);
85 extern int ata_dev_configure(struct ata_device *dev);
86 extern int sata_down_spd_limit(struct ata_link *link);
87 extern int sata_set_spd_needed(struct ata_link *link);
88 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
89 extern void ata_sg_clean(struct ata_queued_cmd *qc);
90 extern void ata_qc_free(struct ata_queued_cmd *qc);
91 extern void ata_qc_issue(struct ata_queued_cmd *qc);
92 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
93 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
94 extern void ata_dev_select(struct ata_port *ap, unsigned int device,
95 unsigned int wait, unsigned int can_sleep);
96 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
97 extern int ata_flush_cache(struct ata_device *dev);
98 extern void ata_dev_init(struct ata_device *dev);
99 extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
100 extern int sata_link_init_spd(struct ata_link *link);
101 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
102 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
103 extern struct ata_port *ata_port_alloc(struct ata_host *host);
104 extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy);
105 extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm);
106
107 /* libata-acpi.c */
108 #ifdef CONFIG_ATA_ACPI
109 extern void ata_acpi_associate_sata_port(struct ata_port *ap);
110 extern void ata_acpi_associate(struct ata_host *host);
111 extern void ata_acpi_dissociate(struct ata_host *host);
112 extern int ata_acpi_on_suspend(struct ata_port *ap);
113 extern void ata_acpi_on_resume(struct ata_port *ap);
114 extern int ata_acpi_on_devcfg(struct ata_device *dev);
115 extern void ata_acpi_on_disable(struct ata_device *dev);
116 extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
117 #else
118 static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
119 static inline void ata_acpi_associate(struct ata_host *host) { }
120 static inline void ata_acpi_dissociate(struct ata_host *host) { }
121 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
122 static inline void ata_acpi_on_resume(struct ata_port *ap) { }
123 static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
124 static inline void ata_acpi_on_disable(struct ata_device *dev) { }
125 static inline void ata_acpi_set_state(struct ata_port *ap,
126 pm_message_t state) { }
127 #endif
128
129 /* libata-scsi.c */
130 extern int ata_scsi_add_hosts(struct ata_host *host,
131 struct scsi_host_template *sht);
132 extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
133 extern int ata_scsi_offline_dev(struct ata_device *dev);
134 extern void ata_scsi_media_change_notify(struct ata_device *dev);
135 extern void ata_scsi_hotplug(struct work_struct *work);
136 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
137 unsigned int buflen);
138
139 extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
140 unsigned int buflen);
141
142 extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
143 unsigned int buflen);
144 extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
145 unsigned int buflen);
146 extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
147 unsigned int buflen);
148 extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf,
149 unsigned int buflen);
150 extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
151 unsigned int buflen);
152 extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
153 unsigned int buflen);
154 extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
155 unsigned int buflen);
156 extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
157 void (*done)(struct scsi_cmnd *),
158 u8 asc, u8 ascq);
159 extern void ata_scsi_set_sense(struct scsi_cmnd *cmd,
160 u8 sk, u8 asc, u8 ascq);
161 extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
162 unsigned int (*actor) (struct ata_scsi_args *args,
163 u8 *rbuf, unsigned int buflen));
164 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
165 extern void ata_scsi_dev_rescan(struct work_struct *work);
166 extern int ata_bus_probe(struct ata_port *ap);
167
168 /* libata-pmp.c */
169 extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
170 extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
171 extern int sata_pmp_attach(struct ata_device *dev);
172
173 /* libata-eh.c */
174 extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
175 extern void ata_scsi_error(struct Scsi_Host *host);
176 extern void ata_port_wait_eh(struct ata_port *ap);
177 extern void ata_eh_fastdrain_timerfn(unsigned long arg);
178 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
179 extern void ata_eh_detach_dev(struct ata_device *dev);
180 extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
181 unsigned int action);
182 extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
183 unsigned int action);
184 extern void ata_eh_autopsy(struct ata_port *ap);
185 extern void ata_eh_report(struct ata_port *ap);
186 extern int ata_eh_reset(struct ata_link *link, int classify,
187 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
188 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
189 extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
190 extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
191 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
192 ata_postreset_fn_t postreset,
193 struct ata_link **r_failed_disk);
194 extern void ata_eh_finish(struct ata_port *ap);
195
196 /* libata-sff.c */
197 extern u8 ata_irq_on(struct ata_port *ap);
198
199
200 #endif /* __LIBATA_H__ */
201
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