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"
33 struct ata_scsi_args {
34 struct ata_device *dev;
36 struct scsi_cmnd *cmd;
37 void (*done)(struct scsi_cmnd *);
42 /* flags for ata_dev_read_id() */
43 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */
45 /* selector for ata_down_xfermask_limit() */
46 ATA_DNXFER_PIO = 0, /* speed down PIO */
47 ATA_DNXFER_DMA = 1, /* speed down DMA */
48 ATA_DNXFER_40C = 2, /* apply 40c cable limit */
49 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */
50 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */
52 ATA_DNXFER_QUIET = (1 << 31),
55 extern struct workqueue_struct *ata_aux_wq;
56 extern int atapi_enabled;
57 extern int atapi_dmadir;
58 extern int libata_fua;
60 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
61 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
62 u64 block, u32 n_block, unsigned int tf_flags,
64 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
65 extern void ata_dev_disable(struct ata_device *dev);
66 extern void ata_port_flush_task(struct ata_port *ap);
67 extern unsigned ata_exec_internal(struct ata_device *dev,
68 struct ata_taskfile *tf, const u8 *cdb,
69 int dma_dir, void *buf, unsigned int buflen);
70 extern unsigned ata_exec_internal_sg(struct ata_device *dev,
71 struct ata_taskfile *tf, const u8 *cdb,
72 int dma_dir, struct scatterlist *sg,
74 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
75 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
76 unsigned int flags, u16 *id);
77 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int flags);
78 extern int ata_dev_configure(struct ata_device *dev);
79 extern int sata_down_spd_limit(struct ata_port *ap);
80 extern int sata_set_spd_needed(struct ata_port *ap);
81 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
82 extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
83 extern void ata_sg_clean(struct ata_queued_cmd *qc);
84 extern void ata_qc_free(struct ata_queued_cmd *qc);
85 extern void ata_qc_issue(struct ata_queued_cmd *qc);
86 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
87 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
88 extern void ata_dev_select(struct ata_port *ap, unsigned int device,
89 unsigned int wait, unsigned int can_sleep);
90 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
91 extern int ata_flush_cache(struct ata_device *dev);
92 extern void ata_dev_init(struct ata_device *dev);
93 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
94 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
95 extern void ata_port_init(struct ata_port *ap, struct ata_host *host,
96 const struct ata_probe_ent *ent, unsigned int port_no);
97 extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
98 const struct ata_port_info *port);
101 #ifdef CONFIG_SATA_ACPI
102 extern int ata_acpi_exec_tfs(struct ata_port *ap);
103 extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
105 static inline int ata_acpi_exec_tfs(struct ata_port *ap)
109 static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
116 extern struct scsi_transport_template ata_scsi_transport_template;
118 extern void ata_scsi_scan_host(struct ata_port *ap);
119 extern int ata_scsi_offline_dev(struct ata_device *dev);
120 extern void ata_scsi_hotplug(struct work_struct *work);
121 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
122 unsigned int buflen);
124 extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
125 unsigned int buflen);
127 extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
128 unsigned int buflen);
129 extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
130 unsigned int buflen);
131 extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
132 unsigned int buflen);
133 extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf,
134 unsigned int buflen);
135 extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
136 unsigned int buflen);
137 extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
138 unsigned int buflen);
139 extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
140 unsigned int buflen);
141 extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
142 void (*done)(struct scsi_cmnd *),
144 extern void ata_scsi_set_sense(struct scsi_cmnd *cmd,
145 u8 sk, u8 asc, u8 ascq);
146 extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
147 unsigned int (*actor) (struct ata_scsi_args *args,
148 u8 *rbuf, unsigned int buflen));
149 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
150 extern void ata_scsi_dev_rescan(struct work_struct *work);
151 extern int ata_bus_probe(struct ata_port *ap);
154 extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
155 extern void ata_scsi_error(struct Scsi_Host *host);
156 extern void ata_port_wait_eh(struct ata_port *ap);
157 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
160 extern u8 ata_irq_on(struct ata_port *ap);
163 #endif /* __LIBATA_H__ */