4.4BSD/usr/src/sys/i386/i386/conf.c
/*-
* Copyright (c) 1991, 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
* 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 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
* SUCH DAMAGE.
*
* @(#)conf.c 8.1 (Berkeley) 6/11/93
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/conf.h>
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((dev_t))
#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)
#define bdev_decl(n) \
dev_decl(n,open); dev_decl(n,close); dev_decl(n,strategy); \
dev_decl(n,ioctl); dev_decl(n,dump); dev_decl(n,size)
#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 }
#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 */
#include "wd.h"
#include "fd.h"
#include "wt.h"
#include "xd.h"
bdev_decl(wd);
bdev_decl(Fd);
bdev_decl(wt);
bdev_decl(xd);
struct bdevsw bdevsw[] =
{
bdev_disk_init(NWD,wd), /* 0: st506/rll/esdi/ide disk */
bdev_swap_init(), /* 1: swap pseudo-device */
bdev_disk_init(NFD,Fd), /* 2: floppy disk */
bdev_tape_init(NWT,wt), /* 3: QIC-24/60/120/150 cartridge tape */
bdev_disk_init(NXD,xd), /* 4: temp alt st506/rll/esdi/ide disk */
};
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(())
#define cdev_decl(n) \
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, \
dev_init(c,n,strategy) }
/* 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, \
dev_init(c,n,strategy) }
/* 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 */
cdev_decl(cn);
/* 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 }
cdev_decl(ctty);
/* 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 }
dev_type_read(mmrw);
/* read/write */
#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) }
#include "pty.h"
#define pts_tty pt_tty
#define ptsioctl ptyioctl
cdev_decl(pts);
#define ptc_tty pt_tty
#define ptcioctl ptyioctl
cdev_decl(ptc);
/* 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 }
cdev_decl(log);
/* 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 }
cdev_decl(wd);
cdev_decl(Fd);
cdev_decl(xd);
cdev_decl(wt);
#include "com.h"
cdev_decl(com);
#include "pc.h"
cdev_decl(pc);
/* open, close, read, write, ioctl, tty -- XXX should be a tty */
extern struct tty pccons;
#define cdev_pc_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, &pccons, ttselect, \
(dev_type_map((*))) enodev, 0 }
#include "bpfilter.h"
cdev_decl(bpf);
/* 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 }
struct cdevsw cdevsw[] =
{
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_disk_init(NWD,wd), /* 3: st506/rll/esdi/ide disk */
cdev_swap_init(1,sw), /* 4: /dev/drum (swap pseudo-device) */
cdev_tty_init(NPTY,pts), /* 5: pseudo-tty slave */
cdev_ptc_init(NPTY,ptc), /* 6: pseudo-tty master */
cdev_log_init(1,log), /* 7: /dev/klog */
cdev_tty_init(NCOM,com), /* 8: serial communications ports */
cdev_disk_init(NFD,Fd), /* 9: floppy disk */
cdev_tape_init(NWT,wt), /* 10: QIC-24/60/120/150 cartridge tape */
cdev_disk_init(NXD,xd), /* 11: temp alt st506/rll/esdi/ide disk */
cdev_pc_init(1,pc), /* 12: real console */
cdev_notdef(), /* 13 */
cdev_bpf_init(NBPFILTER,bpf), /* 14: 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(1, 0);