usb: avoid redundant cast of kmalloc() return value in OTi-6858 driver
[pv_ops_mirror.git] / drivers / ata / libata.h
blob564cd234c805335999bf40fefe0b00eab1f061d1
1 /*
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)
11 * any later version.
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.*
28 #ifndef __LIBATA_H__
29 #define __LIBATA_H__
31 #define DRV_NAME "libata"
33 struct ata_scsi_args {
34 struct ata_device *dev;
35 u16 *id;
36 struct scsi_cmnd *cmd;
37 void (*done)(struct scsi_cmnd *);
40 /* libata-core.c */
41 enum {
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 unsigned int ata_print_id;
56 extern struct workqueue_struct *ata_aux_wq;
57 extern int atapi_enabled;
58 extern int atapi_dmadir;
59 extern int libata_fua;
60 extern int libata_noacpi;
61 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
62 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
63 u64 block, u32 n_block, unsigned int tf_flags,
64 unsigned int tag);
65 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
66 extern void ata_dev_disable(struct ata_device *dev);
67 extern void ata_port_flush_task(struct ata_port *ap);
68 extern unsigned ata_exec_internal(struct ata_device *dev,
69 struct ata_taskfile *tf, const u8 *cdb,
70 int dma_dir, void *buf, unsigned int buflen);
71 extern unsigned ata_exec_internal_sg(struct ata_device *dev,
72 struct ata_taskfile *tf, const u8 *cdb,
73 int dma_dir, struct scatterlist *sg,
74 unsigned int n_elem);
75 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
76 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
77 unsigned int flags, u16 *id);
78 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
79 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags);
80 extern int ata_dev_configure(struct ata_device *dev);
81 extern int sata_down_spd_limit(struct ata_port *ap);
82 extern int sata_set_spd_needed(struct ata_port *ap);
83 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
84 extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
85 extern void ata_sg_clean(struct ata_queued_cmd *qc);
86 extern void ata_qc_free(struct ata_queued_cmd *qc);
87 extern void ata_qc_issue(struct ata_queued_cmd *qc);
88 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
89 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
90 extern void ata_dev_select(struct ata_port *ap, unsigned int device,
91 unsigned int wait, unsigned int can_sleep);
92 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
93 extern int ata_flush_cache(struct ata_device *dev);
94 extern void ata_dev_init(struct ata_device *dev);
95 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
96 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
97 extern struct ata_port *ata_port_alloc(struct ata_host *host);
99 /* libata-acpi.c */
100 #ifdef CONFIG_ATA_ACPI
101 extern void ata_acpi_associate(struct ata_host *host);
102 extern int ata_acpi_on_suspend(struct ata_port *ap);
103 extern void ata_acpi_on_resume(struct ata_port *ap);
104 extern int ata_acpi_on_devcfg(struct ata_device *adev);
105 #else
106 static inline void ata_acpi_associate(struct ata_host *host) { }
107 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
108 static inline void ata_acpi_on_resume(struct ata_port *ap) { }
109 static inline int ata_acpi_on_devcfg(struct ata_device *adev) { return 0; }
110 #endif
112 /* libata-scsi.c */
113 extern int ata_scsi_add_hosts(struct ata_host *host,
114 struct scsi_host_template *sht);
115 extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
116 extern int ata_scsi_offline_dev(struct ata_device *dev);
117 extern void ata_scsi_hotplug(struct work_struct *work);
118 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
119 unsigned int buflen);
121 extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
122 unsigned int buflen);
124 extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
125 unsigned int buflen);
126 extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
127 unsigned int buflen);
128 extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
129 unsigned int buflen);
130 extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf,
131 unsigned int buflen);
132 extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
133 unsigned int buflen);
134 extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
135 unsigned int buflen);
136 extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
137 unsigned int buflen);
138 extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
139 void (*done)(struct scsi_cmnd *),
140 u8 asc, u8 ascq);
141 extern void ata_scsi_set_sense(struct scsi_cmnd *cmd,
142 u8 sk, u8 asc, u8 ascq);
143 extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
144 unsigned int (*actor) (struct ata_scsi_args *args,
145 u8 *rbuf, unsigned int buflen));
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);
150 /* libata-eh.c */
151 extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
152 extern void ata_scsi_error(struct Scsi_Host *host);
153 extern void ata_port_wait_eh(struct ata_port *ap);
154 extern void ata_eh_fastdrain_timerfn(unsigned long arg);
155 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
157 /* libata-sff.c */
158 extern u8 ata_irq_on(struct ata_port *ap);
161 #endif /* __LIBATA_H__ */