Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
293681cdc3
NetBSD/sys/arch/arm/arm32/conf.c

663 lines
18 KiB
C
Raw Blame History

/* $NetBSD: conf.c,v 1.7 2002/01/05 00:51:30 chris Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe
* for the NetBSD Project.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* conf.c
*
* Character and Block Device configuration
* Console configuration
*
* Defines the structures cdevsw and constab
*
* Created : 17/09/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <sys/vnode.h>
#include <machine/conf.h>
/*#include "biconsdev.h"*/
#ifndef NBICONSDEV
#define NBICONSDEV 0
#endif
/*#include "beep.h"*/
#ifndef NBEEP
#define NBEEP 0
#endif
/*#include "fcom.h"*/
#ifndef NFCOM
#define NFCOM 0
#endif
/*#include "fdc.h"*/
#ifndef NFDC
#define NFDC 0
#endif
/*#include "iic.h"*/
#ifndef NIIC
#define NIIC 0
#endif
/*#include "joy.h"*/
#ifndef NJOY
#define NJOY 0
#endif
/*#include "kbd.h"*/
#ifndef NKBD
#define NKBD 0
#endif
/*#include "lpt.h"*/
#ifndef NLPT
#define NLPT 0
#endif
/*#include "ofcons.h"*/
#ifndef NOFCONS
#define NOFCONS 0
#endif
/*#include "ofrom.h"*/
#ifndef NOFROM
#define NOFROM 0
#endif
/*#include "ofrtc.h"*/ /* XXX not used for anything?! */
#ifndef NOFROM
#define NOFRTC 0
#endif
/*#include "openfirm.h"*/
#ifndef NOPENFIRM
#define NOPENFIRM 0
#endif
/*#include "opms.h"*/
#ifndef NOPMS
#define NOPMS 0
#endif
/*#include "pc.h"*/
#ifndef NPC
#define NPC 0
#endif
/*#include "profiler.h"*/
#ifndef NPROFILER
#define NPROFILER 0
#endif
/*#include "qms.h"*/
#ifndef NQMS
#define NQMS 0
#endif
/*#include "rtc.h"*/
#ifndef NRTC
#define NRTC 0
#endif
/*#include "sacom.h"*/
#ifndef NSACOM
#define NSACOM 0
#endif
/*#include "scr.h"*/
#ifndef NSCR
#define NSCR 0
#endif
/*#include "vt.h"*/
#ifndef NVT
#define NVT 0
#endif
/*#include "vidcconsole.h"*/
#ifndef NVIDCCONSOLE
#define NVIDCCONSOLE 0
#endif
/*#include "plcom.h"*/
#ifndef NPLCOM
#define NPLCOM 0
#endif
/*
* From this point, these need to be MI foo.h files.
*/
/*
* Standard MI devices (e.g. ones in dev/ic)
*/
#include "com.h" /* NS164x0 serial ports */
/*
* Standard pseudo-devices
*/
#include <altq/altqconf.h> /* ick! */
#include "bpfilter.h"
#include "ipfilter.h"
#include "pty.h"
#include "rnd.h"
#include "tun.h"
/*
* Disk/Filesystem pseudo-devices
*/
#include "ccd.h" /* concatenated disk driver */
#include "md.h" /* memory disk driver */
#include "raid.h" /* RAIDframe */
#include "vcoda.h" /* coda file system */
#include "vnd.h" /* vnode disk driver */
/*
* WD/ATA devices
*/
#include "wd.h"
bdev_decl(wd);
bdev_decl(sw);
/*
* ISDN devices
*/
#ifdef CONF_HAVE_ISDN
#include "i4b.h"
#include "i4bctl.h"
#include "i4btrc.h"
#include "i4brbch.h"
#include "i4btel.h"
#else
#define NI4B 0
#define NI4BCTL 0
#define NI4BTRC 0
#define NI4BRBCH 0
#define NI4BTEL 0
#endif
#ifdef CONF_HAVE_PCI
#include "iop.h"
#include "ld.h"
bdev_decl(ld);
#include "mlx.h"
#include "mly.h"
#include "pci.h"
#else
#define NIOP 0
#define NLD 0
#define NMLX 0
#define NMLY 0
#define NPCI 0
#endif
#define NAGP 0
/*
* SCSI/ATAPI devices
*/
#ifdef CONF_HAVE_SCSIPI
#include "sd.h"
#include "st.h"
#include "cd.h"
#include "ch.h"
#include "uk.h"
#include "ss.h"
#include "scsibus.h"
#else
#define NSD 0
#define NST 0
#define NCD 0
#define NCH 0
#define NUK 0
#define NSS 0
#define NSCSIBUS 0
#endif
/*
* Audio devices
*/
#include "audio.h"
#include "midi.h"
#include "sequencer.h"
/*
* USB devices
*/
#ifdef CONF_HAVE_USB
#include "usb.h"
#include "ucom.h"
#include "ugen.h"
#include "uhid.h"
#include "ulpt.h"
#include "urio.h"
#include "uscanner.h"
#else
#define NUSB 0
#define NUCOM 0
#define NUGEN 0
#define NUHID 0
#define NULPT 0
#define NURIO 0
#define NUSCANNER 0
#endif
/*
* WSCONS devices
*/
#ifdef CONF_HAVE_WSCONS
#include "wsdisplay.h"
#include "wsfont.h"
#include "wskbd.h"
#include "wsmouse.h"
#include "wsmux.h"
#else
#define NWSDISPLAY 0
#define NWSFONT 0
#define NWSKBD 0
#define NWSMOUSE 0
#define NWSMUX 0
#endif
#include "clockctl.h"
cdev_decl(clockctl);
#include "irframe.h"
cdev_decl(irframe);
#include "cir.h"
cdev_decl(cir);
#include "radio.h"
cdev_decl(radio);
#include <arm/conf.h>
/* Block devices */
struct bdevsw bdevsw[] = {
bdev_lkm_dummy(), /* 0: */
bdev_swap_init(1, sw), /* 1: swap pseudo-device */
bdev_lkm_dummy(), /* 2: */
bdev_lkm_dummy(), /* 3: */
bdev_lkm_dummy(), /* 4: */
bdev_lkm_dummy(), /* 5: */
bdev_lkm_dummy(), /* 6: */
bdev_lkm_dummy(), /* 7: */
bdev_lkm_dummy(), /* 8: */
bdev_lkm_dummy(), /* 9: */
bdev_lkm_dummy(), /* 10: */
bdev_lkm_dummy(), /* 11: */
bdev_lkm_dummy(), /* 12: */
bdev_lkm_dummy(), /* 13: */
bdev_lkm_dummy(), /* 14: */
bdev_lkm_dummy(), /* 15: */
bdev_disk_init(NWD, wd), /* 16: Internal IDE disk */
bdev_disk_init(NFDC, fd), /* 17: floppy diskette */
bdev_disk_init(NMD, md), /* 18: memory disk */
bdev_disk_init(NVND,vnd), /* 19: vnode disk driver */
bdev_lkm_dummy(), /* 20: */
bdev_disk_init(NCCD,ccd), /* 21: concatenated disk driver */
bdev_lkm_dummy(), /* 22: */
bdev_lkm_dummy(), /* 23: */
bdev_disk_init(NSD,sd), /* 24: SCSI disk */
bdev_tape_init(NST,st), /* 25: SCSI tape */
bdev_disk_init(NCD,cd), /* 26: SCSI cdrom */
bdev_lkm_dummy(), /* 27: */
bdev_lkm_dummy(), /* 28: */
bdev_lkm_dummy(), /* 29: */
bdev_lkm_dummy(), /* 30: */
bdev_lkm_dummy(), /* 31: */
bdev_lkm_dummy(), /* 32: */
bdev_lkm_dummy(), /* 33: */
bdev_lkm_dummy(), /* 34: */
bdev_lkm_dummy(), /* 35: */
bdev_lkm_dummy(), /* 36: */
bdev_lkm_dummy(), /* 37: */
bdev_lkm_dummy(), /* 38: */
bdev_lkm_dummy(), /* 39: */
bdev_lkm_dummy(), /* 40: */
bdev_lkm_dummy(), /* 41: */
bdev_lkm_dummy(), /* 42: */
bdev_lkm_dummy(), /* 43: */
bdev_lkm_dummy(), /* 44: */
bdev_lkm_dummy(), /* 45: */
bdev_lkm_dummy(), /* 46: */
bdev_lkm_dummy(), /* 47: */
bdev_lkm_dummy(), /* 48: */
bdev_lkm_dummy(), /* 49: */
bdev_lkm_dummy(), /* 50: */
bdev_lkm_dummy(), /* 51: */
bdev_lkm_dummy(), /* 52: */
bdev_lkm_dummy(), /* 53: */
bdev_lkm_dummy(), /* 54: */
bdev_lkm_dummy(), /* 55: */
bdev_lkm_dummy(), /* 56: */
bdev_lkm_dummy(), /* 57: */
bdev_lkm_dummy(), /* 58: */
bdev_lkm_dummy(), /* 59: */
bdev_lkm_dummy(), /* 60: */
bdev_lkm_dummy(), /* 61: */
bdev_lkm_dummy(), /* 62: */
bdev_lkm_dummy(), /* 63: */
bdev_lkm_dummy(), /* 64: */
bdev_lkm_dummy(), /* 65: */
bdev_lkm_dummy(), /* 66: */
bdev_lkm_dummy(), /* 67: */
bdev_lkm_dummy(), /* 68: */
bdev_lkm_dummy(), /* 69: */
bdev_lkm_dummy(), /* 70: */
bdev_disk_init(NRAID,raid), /* 71: RAIDframe disk driver */
bdev_lkm_dummy(), /* 72: */
bdev_lkm_dummy(), /* 73: */
bdev_lkm_dummy(), /* 74: */
bdev_lkm_dummy(), /* 75: */
bdev_lkm_dummy(), /* 76: */
bdev_lkm_dummy(), /* 77: */
bdev_lkm_dummy(), /* 78: */
bdev_lkm_dummy(), /* 79: */
bdev_lkm_dummy(), /* 80: */
bdev_lkm_dummy(), /* 81: */
bdev_lkm_dummy(), /* 82: */
bdev_lkm_dummy(), /* 83: */
bdev_lkm_dummy(), /* 84: */
bdev_lkm_dummy(), /* 85: */
bdev_lkm_dummy(), /* 86: */
bdev_lkm_dummy(), /* 87: */
bdev_lkm_dummy(), /* 88: */
bdev_lkm_dummy(), /* 89: */
bdev_lkm_dummy(), /* 90: */
bdev_lkm_dummy(), /* 91: */
bdev_disk_init(NLD,ld), /* 92: Logical disk driver */
bdev_lkm_dummy(), /* 93: */
bdev_lkm_dummy(), /* 94: */
bdev_lkm_dummy(), /* 95: */
bdev_lkm_dummy(), /* 96: */
bdev_lkm_dummy(), /* 97: */
};
/* Character devices */
cdev_decl(i4b);
cdev_decl(i4bctl);
cdev_decl(i4btrc);
cdev_decl(i4brbch);
cdev_decl(i4btel);
#define ptstty ptytty
#define ptsioctl ptyioctl
#define ptctty ptytty
#define ptcioctl ptyioctl
struct cdevsw cdevsw[] = {
cdev_mm_init(1,mm), /* 0: /dev/{null,mem,kmem,...} */
cdev_swap_init(1,sw), /* 1: /dev/drum (swap pseudo-device) */
cdev_cn_init(1,cn), /* 2: virtual console */
cdev_ctty_init(1,ctty), /* 3: controlling terminal */
cdev_physcon_init(NVT,physcon), /* 4: RPC console */
cdev_log_init(1,log), /* 5: /dev/klog */
cdev_ptc_init(NPTY,ptc), /* 6: pseudo-tty master */
cdev_tty_init(NPTY,pts), /* 7: pseudo-tty slave */
cdev_lpt_init(NLPT,lpt), /* 8: parallel printer */
cdev_mouse_init(NQMS,qms), /* 9: qms driver */
cdev_beep_init(NBEEP,beep), /* 10: simple beep device */
cdev_kbd_init(NKBD,kbd), /* 11: kbd device */
cdev_tty_init(NCOM,com), /* 12: serial port */
cdev_lkm_dummy(), /* 13: */
cdev_lkm_dummy(), /* 14: */
cdev_tty_init(NOFCONS,ofcons_), /* 15: Openfirmware console */
cdev_disk_init(NWD, wd), /* 16: ST506/ESDI/IDE disk */
cdev_disk_init(NFDC,fd), /* 17: floppy diskette */
cdev_disk_init(NMD,md), /* 18: memory disk driver */
cdev_disk_init(NVND,vnd), /* 19: vnode disk driver */
cdev_lkm_dummy(), /* 20: */
cdev_disk_init(NCCD,ccd), /* 21: concatenated disk driver */
cdev_lkm_dummy(), /* 22: */
cdev_lkm_dummy(), /* 23: */
cdev_disk_init(NSD,sd), /* 24: SCSI disk */
cdev_tape_init(NST,st), /* 25: SCSI tape */
cdev_disk_init(NCD,cd), /* 26: SCSI CD-ROM */
cdev_ch_init(NCH,ch), /* 27: SCSI autochanger */
cdev_uk_init(NUK,uk), /* 28: SCSI unknown */
cdev_scanner_init(NSS,ss), /* 29: SCSI scanner */
cdev_lkm_dummy(), /* 30: */
cdev_lkm_dummy(), /* 31: */
cdev_bpftun_init(NBPFILTER,bpf), /* 32: Berkeley packet filter */
cdev_bpftun_init(NTUN,tun), /* 33: network tunnel */
cdev_fd_init(1,filedesc), /* 34: file descriptor pseudo-device */
cdev_lkm_init(NLKM,lkm), /* 35: loadable module driver */
cdev_audio_init(NAUDIO,audio), /* 36: generic audio I/O */
cdev_vidcvid_init(NVIDCCONSOLE,vidcconsole), /* 37: vidcconsole device */
cdev_notdef(), /* 38: removed cpu device */
cdev_lkm_dummy(), /* 39: reserved */
cdev_mouse_init(NOPMS,pms), /* 40: PS2 mouse driver */
cdev_lkm_dummy(), /* 41: reserved */
cdev_iic_init(NIIC,iic), /* 42: IIC bus driver */
cdev_rtc_init(NRTC,rtc), /* 43: RTC driver */
cdev_lkm_dummy(), /* 44: reserved */
cdev_lkm_dummy(), /* 45: reserved */
cdev_ipf_init(NIPFILTER,ipl), /* 46: ip-filter device */
cdev_lkm_dummy(), /* 47: reserved */
cdev_lkm_dummy(), /* 48: reserved */
cdev_mm_init(NOFROM,ofrom), /* 49: ofrom */
cdev_tty_init(NSCR,scr), /* 50: Smart card reader */
cdev_notdef(), /* 51: reserved */
cdev_rnd_init(NRND,rnd), /* 52: random src pseudo-dev */
cdev_prof_init(NPROFILER,prof), /* 53: fiq Profiler */
cdev_tty_init(NFCOM,fcom), /* 54: FOOTBRIDGE console */
cdev_lkm_dummy(), /* 55: Reserved for bypass device */
cdev_joy_init(NJOY,joy), /* 56: ISA joystick */
cdev_midi_init(NMIDI,midi), /* 57: MIDI I/O */
cdev_midi_init(NSEQUENCER,sequencer), /* 58: sequencer I/O */
cdev_vc_nb_init(NVCODA,vc_nb_), /* 59: coda file system psdev */
cdev_wsdisplay_init(NWSDISPLAY,wsdisplay), /* 60: frame buffers, etc.*/
cdev_mouse_init(NWSKBD,wskbd), /* 61: keyboards */
cdev_mouse_init(NWSMOUSE,wsmouse), /* 62: mice */
cdev_lkm_dummy(), /* 63: reserved */
cdev_usb_init(NUSB,usb), /* 64: USB controller */
cdev_usbdev_init(NUHID,uhid), /* 65: USB generic HID */
cdev_lpt_init(NULPT,ulpt), /* 66: USB printer */
cdev_lkm_dummy(), /* 67: reserved */
cdev_lkm_dummy(), /* 68: reserved */
cdev_lkm_dummy(), /* 69: reserved */
cdev_scsibus_init(NSCSIBUS,scsibus), /* 70: SCSI bus */
cdev_disk_init(NRAID,raid), /* 71: RAIDframe disk driver */
cdev_ugen_init(NUGEN,ugen), /* 72: USB generic driver */
cdev_mouse_init(NWSMUX,wsmux), /* 73: ws multiplexor */
cdev_tty_init(NUCOM,ucom), /* 74: USB tty */
cdev_usbdev_init(NURIO,urio), /* 75: Diamond Rio 500 */
cdev_ugen_init(NUSCANNER,uscanner), /* 76: USB scanner */
cdev_openfirm_init(NOPENFIRM,openfirm), /* 77: openfirmware */
cdev_tty_init(NBICONSDEV,biconsdev), /* 78: bicons pseudo-dev */
cdev_i4b_init(NI4B,i4b), /* 79: i4b main device */
cdev_i4bctl_init(NI4BCTL,i4bctl), /* 80: i4b control device */
cdev_i4brbch_init(NI4BRBCH,i4brbch), /* 81: i4b raw b-channel access */
cdev_i4btrc_init(NI4BTRC,i4btrc), /* 82: i4b trace device */
cdev_i4btel_init(NI4BTEL,i4btel), /* 83: i4b phone device */
cdev_tty_init(NSACOM,sacom), /* 84: SA11x0 serial port */
cdev__oci_init(NMLY,mly), /* 85: Newer Mylex ctrl iface */
cdev__oci_init(NWSFONT,wsfont), /* 86: wsfont pseudo-device */
cdev__ocim_init(NAGP,agp), /* 87: AGP graphics aperture */
cdev_pci_init(NPCI,pci), /* 88: PCI bus access device */
cdev__oci_init(NIOP,iop), /* 89: I2O IOP control iface */
cdev_altq_init(NALTQ,altq), /* 90: ALTQ control interface */
cdev__oci_init(NMLX,mlx), /* 91: Mylex DAC960 ctl iface */
cdev_disk_init(NLD,ld), /* 92: Logical disk */
cdev_tty_init(NPLCOM,plcom), /* 93: IFPGA console */
cdev_clockctl_init(NCLOCKCTL, clockctl),/* 94: clockctl device */
cdev_ir_init(NIRFRAMEDRV,irframe), /* 95: IrDA frame driver */
cdev_ir_init(NCIR,cir), /* 96: Consumer Ir */
cdev_radio_init(NRADIO,radio), /* 97: generic radio I/O */
};
int nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
int mem_no = 0; /* major device number of memory special file */
/*
* Swapdev is a fake device implemented
* in sw.c used only internally to get to swstrategy.
* It cannot be provided to the users, because the
* swstrategy routine munches the b_dev and b_blkno entries
* before calling the appropriate driver. This would horribly
* confuse, e.g. the hashing routines. Instead, /dev/drum is
* provided as a character (raw) device.
*/
dev_t swapdev = makedev(1, 0);
/*
* Returns true if dev is /dev/mem or /dev/kmem.
*/
int
iskmemdev(dev)
dev_t dev;
{
return (major(dev) == mem_no && minor(dev) < 2);
}
/*
* Returns true if dev is /dev/zero.
*/
int
iszerodev(dev)
dev_t dev;
{
return (major(dev) == mem_no && minor(dev) == 3);
}
static int chrtoblktbl[] = {
/* XXXX This needs to be dynamic for LKMs. */
/*VCHR*/ /*VBLK*/
/* 0 */ NODEV,
/* 1 */ 1,
/* 2 */ NODEV,
/* 3 */ NODEV,
/* 4 */ NODEV,
/* 5 */ NODEV,
/* 6 */ NODEV,
/* 7 */ NODEV,
/* 8 */ NODEV,
/* 9 */ NODEV,
/* 10 */ NODEV,
/* 11 */ NODEV,
/* 12 */ NODEV,
/* 13 */ NODEV,
/* 14 */ NODEV,
/* 15 */ NODEV,
/* 16 */ 16,
/* 17 */ 17,
/* 18 */ 18,
/* 19 */ 19,
/* 20 */ NODEV,
/* 21 */ 21,
/* 22 */ NODEV,
/* 23 */ NODEV,
/* 24 */ 24,
/* 25 */ 25,
/* 26 */ 26,
/* 27 */ NODEV,
/* 28 */ NODEV,
/* 29 */ NODEV,
/* 30 */ NODEV,
/* 31 */ NODEV,
/* 32 */ NODEV,
/* 33 */ NODEV,
/* 34 */ NODEV,
/* 35 */ NODEV,
/* 36 */ NODEV,
/* 37 */ NODEV,
/* 38 */ NODEV,
/* 39 */ NODEV,
/* 40 */ NODEV,
/* 41 */ NODEV,
/* 42 */ NODEV,
/* 43 */ NODEV,
/* 44 */ NODEV,
/* 45 */ NODEV,
/* 46 */ NODEV,
/* 47 */ NODEV,
/* 48 */ NODEV,
/* 49 */ NODEV,
/* 50 */ NODEV,
/* 51 */ NODEV,
/* 52 */ NODEV,
/* 53 */ NODEV,
/* 54 */ NODEV,
/* 55 */ NODEV,
/* 56 */ NODEV,
/* 57 */ NODEV,
/* 58 */ NODEV,
/* 59 */ NODEV,
/* 60 */ NODEV,
/* 61 */ NODEV,
/* 62 */ NODEV,
/* 63 */ NODEV,
/* 64 */ NODEV,
/* 65 */ NODEV,
/* 66 */ NODEV,
/* 67 */ NODEV,
/* 68 */ NODEV,
/* 69 */ NODEV,
/* 70 */ NODEV,
/* 71 */ 71,
/* 72 */ NODEV,
/* 73 */ NODEV,
/* 74 */ NODEV,
/* 75 */ NODEV,
/* 76 */ NODEV,
/* 77 */ NODEV,
/* 78 */ NODEV,
/* 79 */ NODEV,
/* 80 */ NODEV,
/* 81 */ NODEV,
/* 82 */ NODEV,
/* 83 */ NODEV,
/* 84 */ NODEV,
/* 85 */ NODEV,
/* 86 */ NODEV,
/* 87 */ NODEV,
/* 88 */ NODEV,
/* 89 */ NODEV,
/* 90 */ NODEV,
/* 91 */ NODEV,
/* 92 */ 92,
/* 93 */ NODEV,
/* 94 */ NODEV,
/* 95 */ NODEV,
/* 96 */ NODEV,
/* 97 */ NODEV,
};
/*
* Convert a character device number to a block device number.
*/
dev_t
chrtoblk(dev)
dev_t dev;
{
int blkmaj;
if (major(dev) >= nchrdev)
return (NODEV);
blkmaj = chrtoblktbl[major(dev)];
if (blkmaj == NODEV)
return (NODEV);
return (makedev(blkmaj, minor(dev)));
}
Reference in New Issue View Git Blame Copy Permalink