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 *);
41 static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset)
43 if (reset == sata_std_hardreset)
46 if (reset == sata_sff_hardreset)
54 /* flags for ata_dev_read_id() */
55 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
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 */
64 ATA_DNXFER_QUIET = (1 << 31),
67 extern unsigned int ata_print_id;
68 extern struct workqueue_struct *ata_aux_wq;
69 extern int atapi_passthru16;
70 extern int libata_fua;
71 extern int libata_noacpi;
72 extern int libata_allow_tpm;
73 extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
74 extern void ata_force_cbl(struct ata_port *ap);
75 extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
76 extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
77 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
78 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
79 u64 block, u32 n_block, unsigned int tf_flags,
81 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
82 extern void ata_pio_queue_task(struct ata_port *ap, void *data,
84 extern void ata_port_flush_task(struct ata_port *ap);
85 extern unsigned ata_exec_internal(struct ata_device *dev,
86 struct ata_taskfile *tf, const u8 *cdb,
87 int dma_dir, void *buf, unsigned int buflen,
88 unsigned long timeout);
89 extern unsigned ata_exec_internal_sg(struct ata_device *dev,
90 struct ata_taskfile *tf, const u8 *cdb,
91 int dma_dir, struct scatterlist *sg,
92 unsigned int n_elem, unsigned long timeout);
93 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
94 extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
95 int (*check_ready)(struct ata_link *link));
96 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
97 unsigned int flags, u16 *id);
98 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
99 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
100 unsigned int readid_flags);
101 extern int ata_dev_configure(struct ata_device *dev);
102 extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
103 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
104 extern void ata_sg_clean(struct ata_queued_cmd *qc);
105 extern void ata_qc_free(struct ata_queued_cmd *qc);
106 extern void ata_qc_issue(struct ata_queued_cmd *qc);
107 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
108 extern int atapi_check_dma(struct ata_queued_cmd *qc);
109 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
110 extern bool ata_phys_link_online(struct ata_link *link);
111 extern bool ata_phys_link_offline(struct ata_link *link);
112 extern void ata_dev_init(struct ata_device *dev);
113 extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
114 extern int sata_link_init_spd(struct ata_link *link);
115 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
116 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
117 extern struct ata_port *ata_port_alloc(struct ata_host *host);
118 extern void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy);
119 extern void ata_lpm_schedule(struct ata_port *ap, enum link_pm);
122 #ifdef CONFIG_ATA_ACPI
123 extern void ata_acpi_associate_sata_port(struct ata_port *ap);
124 extern void ata_acpi_associate(struct ata_host *host);
125 extern void ata_acpi_dissociate(struct ata_host *host);
126 extern int ata_acpi_on_suspend(struct ata_port *ap);
127 extern void ata_acpi_on_resume(struct ata_port *ap);
128 extern int ata_acpi_on_devcfg(struct ata_device *dev);
129 extern void ata_acpi_on_disable(struct ata_device *dev);
130 extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
132 static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
133 static inline void ata_acpi_associate(struct ata_host *host) { }
134 static inline void ata_acpi_dissociate(struct ata_host *host) { }
135 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
136 static inline void ata_acpi_on_resume(struct ata_port *ap) { }
137 static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
138 static inline void ata_acpi_on_disable(struct ata_device *dev) { }
139 static inline void ata_acpi_set_state(struct ata_port *ap,
140 pm_message_t state) { }
144 extern int ata_scsi_add_hosts(struct ata_host *host,
145 struct scsi_host_template *sht);
146 extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
147 extern int ata_scsi_offline_dev(struct ata_device *dev);
148 extern void ata_scsi_media_change_notify(struct ata_device *dev);
149 extern void ata_scsi_hotplug(struct work_struct *work);
150 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
151 extern void ata_scsi_dev_rescan(struct work_struct *work);
152 extern int ata_bus_probe(struct ata_port *ap);
155 extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
156 extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
157 extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
158 extern void ata_scsi_error(struct Scsi_Host *host);
159 extern void ata_port_wait_eh(struct ata_port *ap);
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 void ata_eh_autopsy(struct ata_port *ap);
169 extern void ata_eh_report(struct ata_port *ap);
170 extern int ata_eh_reset(struct ata_link *link, int classify,
171 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
172 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
173 extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
174 extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
175 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
176 ata_postreset_fn_t postreset,
177 struct ata_link **r_failed_disk);
178 extern void ata_eh_finish(struct ata_port *ap);
181 #ifdef CONFIG_SATA_PMP
182 extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
183 extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
184 extern int sata_pmp_attach(struct ata_device *dev);
185 #else /* CONFIG_SATA_PMP */
186 static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
191 static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
196 static inline int sata_pmp_attach(struct ata_device *dev)
200 #endif /* CONFIG_SATA_PMP */
203 #ifdef CONFIG_ATA_SFF
204 extern void ata_dev_select(struct ata_port *ap, unsigned int device,
205 unsigned int wait, unsigned int can_sleep);
206 extern u8 ata_irq_on(struct ata_port *ap);
207 extern void ata_pio_task(struct work_struct *work);
208 #endif /* CONFIG_ATA_SFF */
210 #endif /* __LIBATA_H__ */