* Copyright (c) 1992 OMRON Corporation.
* Copyright (c) 1991, 1992, 1993
* The Regents of the University of California. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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
* from: hp300/hp300/conf.c 7.16 (Berkeley) 4/28/93
* @(#)conf.c 8.1 (Berkeley) 6/10/93
int rawread
__P((dev_t
, struct uio
*, int));
int rawwrite
__P((dev_t
, struct uio
*, int));
int swstrategy
__P((struct buf
*));
int ttselect
__P((dev_t
, int, struct proc
*));
#define dev_type_open(n) int n __P((dev_t, int, int, struct proc *))
#define dev_type_close(n) int n __P((dev_t, int, int, struct proc *))
#define dev_type_strategy(n) int n __P((struct buf *))
#define dev_type_ioctl(n) \
int n __P((dev_t, int, caddr_t, int, struct proc *))
/* bdevsw-specific types */
#define dev_type_dump(n) int n __P(())
#define dev_type_size(n) int n __P((dev_t))
#define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t))
#define dev_init(c,n,t) \
(c > 0 ? __CONCAT(n,t) : (__CONCAT(dev_type_,t)((*))) enxio)
/* bdevsw-specific initializations */
#define dev_size_init(c,n) (c > 0 ? __CONCAT(n,size) : 0)
dev_decl(n,open); dev_decl(n,close); dev_decl(n,strategy); \
dev_decl(n,ioctl); dev_decl(n,dump); dev_decl(n,size)
/* disk without close routine */
#define bdev_disk_init(c,n) { \
dev_init(c,n,open), (dev_type_close((*))) nullop, \
dev_init(c,n,strategy), dev_init(c,n,ioctl), \
dev_init(c,n,dump), dev_size_init(c,n), 0 }
/* disk with close routine */
#define bdev_ldisk_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), \
dev_init(c,n,strategy), dev_init(c,n,ioctl), \
dev_init(c,n,dump), dev_size_init(c,n), 0 }
#define bdev_tape_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), \
dev_init(c,n,strategy), dev_init(c,n,ioctl), \
dev_init(c,n,dump), 0, B_TAPE }
#define bdev_swap_init() { \
(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
swstrategy, (dev_type_ioctl((*))) enodev, \
(dev_type_dump((*))) enodev, 0, 0 }
#define bdev_notdef() bdev_tape_init(0,no)
bdev_decl(no
); /* dummy declarations */
bdev_swap_init(), /* 3: swap pseudo-device */
bdev_ldisk_init(NSD
,sd
),/* 4: scsi disk */
bdev_disk_init(NVN
,vn
), /* 6: vnode disk driver (swap to files) */
bdev_tape_init(NST
,st
), /* 7: scsi tape */
int nblkdev
= sizeof (bdevsw
) / sizeof (bdevsw
[0]);
/* cdevsw-specific types */
#define dev_type_read(n) int n __P((dev_t, struct uio *, int))
#define dev_type_write(n) int n __P((dev_t, struct uio *, int))
#define dev_type_stop(n) int n __P((struct tty *, int))
#define dev_type_reset(n) int n __P((int))
#define dev_type_select(n) int n __P((dev_t, int, struct proc *))
#define dev_type_map(n) int n __P(())
dev_decl(n,open); dev_decl(n,close); dev_decl(n,read); \
dev_decl(n,write); dev_decl(n,ioctl); dev_decl(n,stop); \
dev_decl(n,reset); dev_decl(n,select); dev_decl(n,map); \
dev_decl(n,strategy); extern struct tty __CONCAT(n,_tty)[]
#define dev_tty_init(c,n) (c > 0 ? __CONCAT(n,_tty) : 0)
/* open, read, write, ioctl, strategy */
#define cdev_disk_init(c,n) { \
dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \
/* open, close, read, write, ioctl, strategy */
#define cdev_ldisk_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \
/* open, close, read, write, ioctl, strategy */
#define cdev_tape_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \
/* open, close, read, write, ioctl, stop, tty */
#define cdev_tty_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), dev_init(c,n,stop), \
(dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \
(dev_type_map((*))) enodev, 0 }
#define cdev_notdef() { \
(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
(dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \
(dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, seltrue, \
(dev_type_map((*))) enodev, 0 }
cdev_decl(no
); /* dummy declarations */
/* open, close, read, write, ioctl, select -- XXX should be a tty */
#define cdev_cn_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
(dev_type_map((*))) enodev, 0 }
/* open, read, write, ioctl, select -- XXX should be a tty */
#define cdev_ctty_init(c,n) { \
dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
(dev_type_map((*))) enodev, 0 }
#define cdev_mm_init(c,n) { \
(dev_type_open((*))) nullop, (dev_type_close((*))) nullop, mmrw, \
mmrw, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) nullop, \
(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, 0 }
/* read, write, strategy */
#define cdev_swap_init(c,n) { \
(dev_type_open((*))) nullop, (dev_type_close((*))) nullop, rawread, \
rawwrite, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \
(dev_type_map((*))) enodev, dev_init(c,n,strategy) }
#define ptsioctl ptyioctl
#define ptcioctl ptyioctl
/* open, close, read, write, ioctl, tty, select */
#define cdev_ptc_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
(dev_type_reset((*))) nullop, dev_tty_init(c,n), dev_init(c,n,select), \
(dev_type_map((*))) enodev, 0 }
/* open, close, read, ioctl, select -- XXX should be a generic device */
#define cdev_log_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
dev_init(c,n,select), (dev_type_map((*))) enodev, 0 }
/* open, close, ioctl, mmap */
#define cdev_fb_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) nullop, \
(dev_type_write((*))) nullop, dev_init(c,n,ioctl), \
(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
dev_init(c,n,select), dev_init(c,n,map), 0 }
/* open, close, read, ioctl, select, map -- XXX should be a map device */
#define cdev_kbd_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
(dev_type_write((*))) nullop, dev_init(c,n,ioctl), \
(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
dev_init(c,n,select), (dev_type_map((*))) nullop, 0 }
/* open, read, write, ioctl -- XXX should be a disk */
#define cdev_vn_init(c,n) { \
dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \
#define cdev_fd_init(c,n) { \
dev_init(c,n,open), (dev_type_close((*))) enodev, \
(dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \
(dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) enodev, 0, (dev_type_select((*))) enodev, \
(dev_type_map((*))) enodev, 0 }
/* open, close, read, write, ioctl, select -- XXX should be generic device */
#define cdev_bpf_init(c,n) { \
dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
(dev_type_reset((*))) enodev, 0, dev_init(c,n,select), \
(dev_type_map((*))) enodev, 0 }
cdev_cn_init(1,cn
), /* 0: virtual console */
cdev_ctty_init(1,ctty
), /* 1: controlling terminal */
cdev_mm_init(1,mm
), /* 2: /dev/{null,mem,kmem,...} */
cdev_swap_init(1,sw
), /* 3: /dev/drum (swap pseudo-device) */
cdev_tty_init(NPTY
,pts
), /* 4: pseudo-tty slave */
cdev_ptc_init(NPTY
,ptc
), /* 5: pseudo-tty master */
cdev_log_init(1,log
), /* 6: /dev/klog */
cdev_ldisk_init(NSD
,sd
), /* 8: scsi disk */
cdev_fb_init(1,fb
), /* 10: frame buffer */
cdev_tty_init(NSIO
,sio
), /* 12: built-in single-port serial */
cdev_tty_init(NBMC
,bmc
), /* 13: console terminal emulator */
cdev_kbd_init(2,kbd
), /* 14: kyeboard */
cdev_vn_init(NVN
,vn
), /* 19: vnode disk */
cdev_tape_init(NST
,st
), /* 20: scsi tape */
cdev_fd_init(1,fd
), /* 21: file descriptor pseudo-dev */
cdev_bpf_init(NBPFILTER
,bpf
), /* 22: berkeley packet filter */
int nchrdev
= sizeof (cdevsw
) / sizeof (cdevsw
[0]);
int mem_no
= 2; /* 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(3, 0);
* Routine that identifies /dev/mem and /dev/kmem.
* A minimal stub routine can always return 0.
if (major(dev
) == 2 && (minor(dev
) == 0 || minor(dev
) == 1))
* Routine to determine if a device is a disk.
* A minimal stub routine can always return 0.
static int chrtoblktbl
[MAXDEV
] = {
* Routine to convert from character to block device number.
* A minimal stub routine can always return NODEV.
if (major(dev
) >= MAXDEV
|| (blkmaj
= chrtoblktbl
[major(dev
)]) == NODEV
)
return (makedev(blkmaj
, minor(dev
)));