2 * libata.h - helper library for ATA
4 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
5 * Copyright 2003-2004 Jeff Garzik
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)
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.
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.
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
31 #define DRV_NAME "libata"
32 #define DRV_VERSION "3.00" /* must be exactly four chars */
34 struct ata_scsi_args {
35 struct ata_device *dev;
37 struct scsi_cmnd *cmd;
38 void (*done)(struct scsi_cmnd *);
43 /* flags for ata_dev_read_id() */
44 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
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 */
53 ATA_DNXFER_QUIET = (1 << 31),
56 extern atomic_t ata_print_id;
57 extern int atapi_passthru16;
58 extern int libata_fua;
59 extern int libata_noacpi;
60 extern int libata_allow_tpm;
61 extern struct device_type ata_port_type;
62 extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
63 extern void ata_force_cbl(struct ata_port *ap);
64 extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
65 extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
66 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
67 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
68 u64 block, u32 n_block, unsigned int tf_flags,
70 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
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_wait_ready(struct ata_link *link, unsigned long deadline,
81 int (*check_ready)(struct ata_link *link));
82 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
83 unsigned int flags, u16 *id);
84 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
85 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
86 unsigned int readid_flags);
87 extern int ata_dev_configure(struct ata_device *dev);
88 extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
89 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
90 extern unsigned int ata_dev_set_feature(struct ata_device *dev,
91 u8 enable, u8 feature);
92 extern void ata_sg_clean(struct ata_queued_cmd *qc);
93 extern void ata_qc_free(struct ata_queued_cmd *qc);
94 extern void ata_qc_issue(struct ata_queued_cmd *qc);
95 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
96 extern int atapi_check_dma(struct ata_queued_cmd *qc);
97 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
98 extern bool ata_phys_link_online(struct ata_link *link);
99 extern bool ata_phys_link_offline(struct ata_link *link);
100 extern void ata_dev_init(struct ata_device *dev);
101 extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
102 extern int sata_link_init_spd(struct ata_link *link);
103 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
104 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
105 extern struct ata_port *ata_port_alloc(struct ata_host *host);
106 extern const char *sata_spd_string(unsigned int spd);
107 extern int ata_port_probe(struct ata_port *ap);
108 extern void __ata_port_probe(struct ata_port *ap);
110 #define to_ata_port(d) container_of(d, struct ata_port, tdev)
113 #ifdef CONFIG_ATA_ACPI
114 extern unsigned int ata_acpi_gtf_filter;
115 extern void ata_acpi_dissociate(struct ata_host *host);
116 extern int ata_acpi_on_suspend(struct ata_port *ap);
117 extern void ata_acpi_on_resume(struct ata_port *ap);
118 extern int ata_acpi_on_devcfg(struct ata_device *dev);
119 extern void ata_acpi_on_disable(struct ata_device *dev);
120 extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
121 extern int ata_acpi_register(void);
122 extern void ata_acpi_unregister(void);
123 extern void ata_acpi_bind(struct ata_device *dev);
124 extern void ata_acpi_unbind(struct ata_device *dev);
126 static inline void ata_acpi_dissociate(struct ata_host *host) { }
127 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
128 static inline void ata_acpi_on_resume(struct ata_port *ap) { }
129 static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
130 static inline void ata_acpi_on_disable(struct ata_device *dev) { }
131 static inline void ata_acpi_set_state(struct ata_port *ap,
132 pm_message_t state) { }
133 static inline int ata_acpi_register(void) { return 0; }
134 static inline void ata_acpi_unregister(void) { }
135 static inline void ata_acpi_bind(struct ata_device *dev) { }
136 static inline void ata_acpi_unbind(struct ata_device *dev) { }
140 extern int ata_scsi_add_hosts(struct ata_host *host,
141 struct scsi_host_template *sht);
142 extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
143 extern int ata_scsi_offline_dev(struct ata_device *dev);
144 extern void ata_scsi_media_change_notify(struct ata_device *dev);
145 extern void ata_scsi_hotplug(struct work_struct *work);
146 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
147 extern void ata_scsi_dev_rescan(struct work_struct *work);
148 extern int ata_bus_probe(struct ata_port *ap);
149 extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
150 unsigned int id, unsigned int lun);
154 extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
155 extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
156 extern void ata_eh_acquire(struct ata_port *ap);
157 extern void ata_eh_release(struct ata_port *ap);
158 extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
159 extern void ata_scsi_error(struct Scsi_Host *host);
160 extern void ata_eh_fastdrain_timerfn(unsigned long arg);
161 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
162 extern void ata_dev_disable(struct ata_device *dev);
163 extern void ata_eh_detach_dev(struct ata_device *dev);
164 extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
165 unsigned int action);
166 extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
167 unsigned int action);
168 extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
169 u8 page, void *buf, unsigned int sectors);
170 extern void ata_eh_autopsy(struct ata_port *ap);
171 const char *ata_get_cmd_descript(u8 command);
172 extern void ata_eh_report(struct ata_port *ap);
173 extern int ata_eh_reset(struct ata_link *link, int classify,
174 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
175 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
176 extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
177 extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
178 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
179 ata_postreset_fn_t postreset,
180 struct ata_link **r_failed_disk);
181 extern void ata_eh_finish(struct ata_port *ap);
182 extern int ata_ering_map(struct ata_ering *ering,
183 int (*map_fn)(struct ata_ering_entry *, void *),
187 #ifdef CONFIG_SATA_PMP
188 extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
189 extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
190 extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
192 extern int sata_pmp_attach(struct ata_device *dev);
193 #else /* CONFIG_SATA_PMP */
194 static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
199 static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
204 static inline int sata_pmp_set_lpm(struct ata_link *link,
205 enum ata_lpm_policy policy, unsigned hints)
210 static inline int sata_pmp_attach(struct ata_device *dev)
214 #endif /* CONFIG_SATA_PMP */
217 #ifdef CONFIG_ATA_SFF
218 extern void ata_sff_flush_pio_task(struct ata_port *ap);
219 extern void ata_sff_port_init(struct ata_port *ap);
220 extern int ata_sff_init(void);
221 extern void ata_sff_exit(void);
222 #else /* CONFIG_ATA_SFF */
223 static inline void ata_sff_flush_pio_task(struct ata_port *ap)
225 static inline void ata_sff_port_init(struct ata_port *ap)
227 static inline int ata_sff_init(void)
229 static inline void ata_sff_exit(void)
231 #endif /* CONFIG_ATA_SFF */
233 #endif /* __LIBATA_H__ */