1/* $NetBSD: linux_hdio.c,v 1.17 2015/12/08 20:36:14 christos Exp $ */
2
3/*
4 * Copyright (c) 2000 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Frank van der Linden for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
23 * written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <sys/cdefs.h>
39__KERNEL_RCSID(0, "$NetBSD: linux_hdio.c,v 1.17 2015/12/08 20:36:14 christos Exp $");
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/ioctl.h>
44#include <sys/file.h>
45#include <sys/filedesc.h>
46#include <sys/mount.h>
47#include <sys/proc.h>
48#include <sys/disklabel.h>
49
50#include <dev/ata/atareg.h>
51#include <dev/ic/wdcreg.h>
52#include <sys/ataio.h>
53
54#include <sys/syscallargs.h>
55
56#include <compat/linux/common/linux_types.h>
57#include <compat/linux/common/linux_ioctl.h>
58#include <compat/linux/common/linux_signal.h>
59#include <compat/linux/common/linux_util.h>
60#include <compat/linux/common/linux_hdio.h>
61#include <compat/linux/common/linux_ipc.h>
62#include <compat/linux/common/linux_sem.h>
63
64#include <compat/linux/linux_syscallargs.h>
65
66int
67linux_ioctl_hdio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
68 register_t *retval)
69{
70 u_long com;
71 int error, error1;
72 struct file *fp;
73 int (*ioctlf)(struct file *, u_long, void *);
74 struct atareq req;
75 struct disklabel label;
76 struct partinfo pi;
77 struct linux_hd_geometry hdg;
78 struct linux_hd_big_geometry hdg_big;
79
80 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
81 return (EBADF);
82
83 com = SCARG(uap, com);
84 ioctlf = fp->f_ops->fo_ioctl;
85 retval[0] = error = 0;
86
87 switch (com) {
88 case LINUX_HDIO_OBSOLETE_IDENTITY:
89 case LINUX_HDIO_GET_IDENTITY:
90 req.flags = ATACMD_READ;
91 req.command = WDCC_IDENTIFY;
92 req.databuf = SCARG(uap, data);
93 /*
94 * 142 is the size of the old structure used by Linux,
95 * which doesn't seem to be defined anywhere anymore.
96 * The new function should return the entire 512 byte area.
97 */
98 req.datalen = com == LINUX_HDIO_GET_IDENTITY ? 512 : 142;
99 req.timeout = 1000;
100 error = ioctlf(fp, ATAIOCCOMMAND, &req);
101 if (error != 0)
102 break;
103 if (req.retsts != ATACMD_OK)
104 error = EIO;
105 break;
106 case LINUX_HDIO_GETGEO:
107 error = linux_machdepioctl(l, uap, retval);
108 if (error == 0)
109 break;
110 error = ioctlf(fp, DIOCGDINFO, &label);
111 error1 = ioctlf(fp, DIOCGPARTINFO, &pi);
112 if (error != 0 && error1 != 0) {
113 error = error1;
114 break;
115 }
116 hdg.start = error1 != 0 ? pi.pi_offset : 0;
117 hdg.heads = label.d_ntracks;
118 hdg.cylinders = label.d_ncylinders;
119 hdg.sectors = label.d_nsectors;
120 error = copyout(&hdg, SCARG(uap, data), sizeof hdg);
121 break;
122 case LINUX_HDIO_GETGEO_BIG:
123 error = linux_machdepioctl(l, uap, retval);
124 if (error == 0)
125 break;
126 case LINUX_HDIO_GETGEO_BIG_RAW:
127 error = ioctlf(fp, DIOCGDINFO, &label);
128 error1 = ioctlf(fp, DIOCGPARTINFO, &pi);
129 if (error != 0 && error1 != 0) {
130 error = error1;
131 break;
132 }
133 hdg_big.start = error1 != 0 ? pi.pi_offset : 0;
134 hdg_big.heads = label.d_ntracks;
135 hdg_big.cylinders = label.d_ncylinders;
136 hdg_big.sectors = label.d_nsectors;
137 error = copyout(&hdg_big, SCARG(uap, data), sizeof hdg_big);
138 break;
139 case LINUX_HDIO_GET_UNMASKINTR:
140 case LINUX_HDIO_GET_MULTCOUNT:
141 case LINUX_HDIO_GET_KEEPSETTINGS:
142 case LINUX_HDIO_GET_32BIT:
143 case LINUX_HDIO_GET_NOWERR:
144 case LINUX_HDIO_GET_DMA:
145 case LINUX_HDIO_GET_NICE:
146 case LINUX_HDIO_DRIVE_RESET:
147 case LINUX_HDIO_TRISTATE_HWIF:
148 case LINUX_HDIO_DRIVE_TASK:
149 case LINUX_HDIO_DRIVE_CMD:
150 case LINUX_HDIO_SET_MULTCOUNT:
151 case LINUX_HDIO_SET_UNMASKINTR:
152 case LINUX_HDIO_SET_KEEPSETTINGS:
153 case LINUX_HDIO_SET_32BIT:
154 case LINUX_HDIO_SET_NOWERR:
155 case LINUX_HDIO_SET_DMA:
156 case LINUX_HDIO_SET_PIO_MODE:
157 case LINUX_HDIO_SCAN_HWIF:
158 case LINUX_HDIO_SET_NICE:
159 case LINUX_HDIO_UNREGISTER_HWIF:
160 error = EINVAL;
161 }
162
163 fd_putfile(SCARG(uap, fd));
164
165 return error;
166}
167