/*- * Copyright (c) 1991 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. * * from: @(#)conf.c 7.9 (Berkeley) 5/28/91 * $Id: conf.c,v 1.15.2.2 1994/09/16 21:43:55 cgd Exp $ */ #include #include #include #include #include #include #include int rawread __P((dev_t, struct uio *, int)); int rawwrite __P((dev_t, struct uio *, int)); void 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) void 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() #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 "ct.h" #include "st.h" #include "rd.h" #include "sd.h" #include "ccd.h" #include "vn.h" bdev_decl(ct); bdev_decl(st); bdev_decl(rd); bdev_decl(sd); bdev_decl(ccd); bdev_decl(vn); struct bdevsw bdevsw[] = { bdev_tape_init(NCT,ct), /* 0: cs80 cartridge tape */ bdev_notdef(), /* 1 */ bdev_disk_init(NRD,rd), /* 2: hpib disk */ bdev_swap_init(), /* 3: swap pseudo-device */ bdev_disk_init(NSD,sd), /* 4: scsi disk */ bdev_disk_init(NCCD,ccd),/* 5: concatenated disk driver */ bdev_disk_init(NVN,vn), /* 6: vnode disk driver (swap to files) */ bdev_tape_init(NST,st), /* 7: exabyte 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(()) #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, rawread, rawwrite, \ 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), rawread, rawwrite, \ 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(ct); cdev_decl(st); cdev_decl(sd); cdev_decl(rd); #include "grf.h" cdev_decl(grf); /* open, close, ioctl, select, map -- XXX should be a map device */ #define cdev_grf_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 } #include "ppi.h" cdev_decl(ppi); /* open, close, read, write, ioctl -- XXX should be a generic device */ #define cdev_ppi_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, (dev_type_select((*))) enodev, \ (dev_type_map((*))) enodev, 0 } #include "dca.h" cdev_decl(dca); #include "ite.h" cdev_decl(ite); /* open, close, read, write, ioctl, tty -- XXX should be a tty! */ #define cdev_ite_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, dev_tty_init(c,n), ttselect, \ (dev_type_map((*))) enodev, 0 } /* XXX shouldn't this be optional? */ cdev_decl(hil); /* open, close, read, ioctl, select, map -- XXX should be a map device */ #define cdev_hil_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_init(c,n,map), 0 } #include "dcm.h" cdev_decl(dcm); cdev_decl(ccd); cdev_decl(vn); /* open, read, write, ioctl -- XXX should be a disk */ #define cdev_vn_init(c,n) { \ dev_init(c,n,open), (dev_type_close((*))) nullop, rawread, rawwrite, \ dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 0 } dev_type_open(fdopen); /* open */ #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 } #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 } #include "tun.h" cdev_decl(tun); /* open, close, read, write, ioctl, select -- XXX should be generic device */ #define cdev_tun_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_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_tape_init(NCT,ct), /* 7: cs80 cartridge tape */ cdev_disk_init(NSD,sd), /* 8: scsi disk */ cdev_disk_init(NRD,rd), /* 9: hpib disk */ cdev_grf_init(NGRF,grf), /* 10: frame buffer */ cdev_ppi_init(NPPI,ppi), /* 11: printer/plotter interface */ cdev_tty_init(NDCA,dca), /* 12: built-in single-port serial */ cdev_ite_init(NITE,ite), /* 13: console terminal emulator */ cdev_hil_init(1,hil), /* 14: human interface loop */ cdev_tty_init(NDCM,dcm), /* 15: 4-port serial */ cdev_notdef(), /* 16 */ cdev_disk_init(NCCD,ccd), /* 17: concatenated disk */ cdev_notdef(), /* 18 */ cdev_vn_init(NVN,vn), /* 19: vnode disk */ cdev_tape_init(NST,st), /* 20: exabyte tape */ cdev_fd_init(1,fd), /* 21: file descriptor pseudo-dev */ cdev_bpf_init(NBPFILTER,bpf), /* 22: berkeley packet filter */ cdev_tun_init(NTUN,tun), /* 23: network tunnel */ }; 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); /* * Returns true if dev is /dev/mem or /dev/kmem. */ iskmemdev(dev) dev_t dev; { return (major(dev) == mem_no && minor(dev) < 2); } /* * Returns true if dev is /dev/zero. */ iszerodev(dev) dev_t dev; { return (major(dev) == mem_no && minor(dev) == 12); } /* * Returns true if dev is a disk device. */ isdisk(dev, type) dev_t dev; int type; { /* XXXX This needs to be dynamic for LKMs. */ switch (major(dev)) { case 2: case 4: case 5: case 6: return (type == VBLK); case 8: case 9: case 17: case 19: return (type == VCHR); default: return (0); } } static int chrtoblktbl[] = { /* XXXX This needs to be dynamic for LKMs. */ /*VCHR*/ /*VBLK*/ /* 0 */ NODEV, /* 1 */ NODEV, /* 2 */ NODEV, /* 3 */ NODEV, /* 4 */ NODEV, /* 5 */ NODEV, /* 6 */ NODEV, /* 7 */ 0, /* 8 */ 4, /* 9 */ 2, /* 10 */ NODEV, /* 11 */ NODEV, /* 12 */ NODEV, /* 13 */ NODEV, /* 14 */ NODEV, /* 15 */ NODEV, /* 16 */ NODEV, /* 17 */ 5, /* 18 */ NODEV, /* 19 */ 6, /* 20 */ 7, /* 21 */ NODEV, /* 22 */ NODEV, }; /* * Convert a character device number to a block device number. */ 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))); } /* * This entire table could be autoconfig()ed but that would mean that * the kernel's idea of the console would be out of sync with that of * the standalone boot. I think it best that they both use the same * known algorithm unless we see a pressing need otherwise. */ #include /* console-specific types */ #if 0 /* XXX */ #define dev_type_cnprobe(n) void n __P((struct consdev *)) #define dev_type_cninit(n) void n __P((struct consdev *)) #define dev_type_cngetc(n) int n __P((dev_t)) #define dev_type_cnputc(n) void n __P((dev_t, int)) #else #define dev_type_cnprobe(n) int n() #define dev_type_cninit(n) int n() #define dev_type_cngetc(n) int n() #define dev_type_cnputc(n) int n() #endif #define cons_decl(n) \ dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \ dev_decl(n,cnputc) #define cons_init(n) { \ dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \ dev_init(1,n,cnputc) } cons_decl(ite); cons_decl(dca); cons_decl(dcm); struct consdev constab[] = { #if NITE > 0 cons_init(ite), #endif #if NDCA > 0 cons_init(dca), #endif #if NDCM > 0 cons_init(dcm), #endif { 0 }, };