1/*	$NetBSD: linux_fdio.c,v 1.12 2007/12/20 23:02:54 dsl 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_fdio.c,v 1.12 2007/12/20 23:02:54 dsl 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 <sys/fdio.h>
51
52#include <sys/syscallargs.h>
53
54#include <dev/isa/fdreg.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_fdio.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_fdio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
68		 register_t *retval)
69{
70	file_t *fp;
71	int error;
72	int (*ioctlf)(file_t *, u_long, void *);
73	u_long com;
74	struct fdformat_parms fparams;
75	struct linux_floppy_struct lflop;
76	struct linux_floppy_drive_struct ldrive;
77
78	com = (u_long)SCARG(uap, data);
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
86	retval[0] = error = 0;
87
88	switch (com) {
89	case LINUX_FDMSGON:
90	case LINUX_FDMSGOFF:
91	case LINUX_FDTWADDLE:
92	case LINUX_FDCLRPRM:
93		/* whatever you say */
94		break;
95	case LINUX_FDPOLLDRVSTAT:
96		/*
97		 * Just fill in some innocent defaults.
98		 */
99		memset(&ldrive, 0, sizeof ldrive);
100		ldrive.fd_ref = 1;
101		ldrive.maxblock = 2;
102		ldrive.maxtrack = ldrive.track = 1;
103		ldrive.flags = LINUX_FD_DISK_WRITABLE;
104		error = copyout(&ldrive, SCARG(uap, data), sizeof ldrive);
105		break;
106	case LINUX_FDGETPRM:
107		error = ioctlf(fp, FDIOCGETFORMAT, &fparams);
108		if (error != 0)
109			break;
110		lflop.size = fparams.ncyl * fparams.nspt * fparams.ntrk;
111		lflop.sect = fparams.nspt;
112		lflop.head = fparams.ntrk;
113		lflop.track = fparams.ncyl;
114		lflop.stretch = fparams.stepspercyl == 2 ? 1 : 0;
115		lflop.fmt_gap = fparams.gaplen;
116		/*
117		 * XXXX Use knowledge of floppy for these fields.
118		 * FDIOCGETFORMAT does not provide enough information.
119		 * It would be better to have FDIOCGETFORMAT return more
120		 * information.
121		 */
122		switch (fparams.xfer_rate) {
123		case 500 * 1024:
124			lflop.spec1 = 0xcf;
125			lflop.gap = 0x1b;
126			lflop.rate = FDC_500KBPS;
127			break;
128		case 300 * 1024:
129			lflop.spec1 = 0xdf;
130			lflop.gap = 0x23;
131			lflop.rate = FDC_300KBPS;
132			break;
133		case 250 * 1024:
134			lflop.spec1 = 0xdf;
135			lflop.gap = 0x2a;
136			lflop.rate = FDC_250KBPS;
137			break;
138		}
139		error = copyout(&lflop, SCARG(uap, data), sizeof lflop);
140		break;
141	case LINUX_FDSETPRM:
142		/*
143		 * Should use FDIOCSETFORMAT here, iff its interface
144		 * is extended.
145		 */
146	case LINUX_FDDEFPRM:
147	case LINUX_FDFMTBEG:
148	case LINUX_FDFMTTRK:
149	case LINUX_FDFMTEND:
150	case LINUX_FDSETEMSGTRESH:
151	case LINUX_FDFLUSH:
152	case LINUX_FDSETMAXERRS:
153	case LINUX_FDGETMAXERRS:
154	case LINUX_FDGETDRVTYP:
155	case LINUX_FDSETDRVPRM:
156	case LINUX_FDGETDRVPRM:
157	case LINUX_FDGETDRVSTAT:
158	case LINUX_FDRESET:
159	case LINUX_FDGETFDCSTAT:
160	case LINUX_FDWERRORCLR:
161	case LINUX_FDWERRORGET:
162	case LINUX_FDRAWCMD:
163	case LINUX_FDEJECT:
164	default:
165		error = EINVAL;
166	}
167
168	fd_putfile(SCARG(uap, fd));
169
170	return 0;
171}
172