77a6b82b27
This merge changes the device switch tables from static array to dynamically generated by config(8). - All device switches is defined as a constant structure in device drivers. - The new grammer ``device-major'' is introduced to ``files''. device-major <prefix> char <num> [block <num>] [<rules>] - All device major numbers must be listed up in port dependent majors.<arch> by using this grammer. - Added the new naming convention. The name of the device switch must be <prefix>_[bc]devsw for auto-generation of device switch tables. - The backward compatibility of loading block/character device switch by LKM framework is broken. This is necessary to convert from block/character device major to device name in runtime and vice versa. - The restriction to assign device major by LKM is completely removed. We don't need to reserve LKM entries for dynamic loading of device switch. - In compile time, device major numbers list is packed into the kernel and the LKM framework will refer it to assign device major number dynamically.
111 lines
4.3 KiB
C
111 lines
4.3 KiB
C
/* $NetBSD: cons.h,v 1.19 2002/09/06 13:18:43 gehenna Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cons.h 1.6 92/01/21$
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*
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* @(#)cons.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _SYS_DEV_CONS_H_
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#define _SYS_DEV_CONS_H_
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struct consdev {
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void (*cn_probe) /* probe hardware and fill in consdev info */
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__P((struct consdev *));
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void (*cn_init) /* turn on as console */
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__P((struct consdev *));
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int (*cn_getc) /* kernel getchar interface */
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__P((dev_t));
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void (*cn_putc) /* kernel putchar interface */
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__P((dev_t, int));
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void (*cn_pollc) /* turn on and off polling */
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__P((dev_t, int));
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void (*cn_bell) /* ring bell */
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__P((dev_t, u_int, u_int, u_int));
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dev_t cn_dev; /* major/minor of device */
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int cn_pri; /* pecking order; the higher the better */
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};
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/* values for cn_pri - reflect our policy for console selection */
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#define CN_DEAD 0 /* device doesn't exist */
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#define CN_NORMAL 1 /* device exists but is nothing special */
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#define CN_INTERNAL 2 /* "internal" bit-mapped display */
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#define CN_REMOTE 3 /* serial interface with remote bit set */
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#ifdef _KERNEL
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extern struct consdev constab[];
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extern struct consdev *cn_tab;
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void cninit __P((void));
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int cngetc __P((void));
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int cngetsn __P((char *, int));
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void cnputc __P((int));
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void cnpollc __P((int));
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void cnbell __P((u_int, u_int, u_int));
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void cnrint __P((void));
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void nullcnpollc __P((dev_t, int));
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/* console-specific types */
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#define dev_type_cnprobe(n) void n __P((struct consdev *))
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#define dev_type_cninit(n) void n __P((struct consdev *))
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#define dev_type_cngetc(n) int n __P((dev_t))
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#define dev_type_cnputc(n) void n __P((dev_t, int))
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#define dev_type_cnpollc(n) void n __P((dev_t, int))
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#define dev_type_cnbell(n) void n __P((dev_t, u_int, u_int, u_int));
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#define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t))
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#define dev_init(n,t) __CONCAT(n,t)
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#define cons_decl(n) \
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dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
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dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell);
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#define cons_init(n) { \
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dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
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dev_init(n,cnputc), dev_init(n,cnpollc) }
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#define cons_init_bell(n) { \
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dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
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dev_init(n,cnputc), dev_init(n,cnpollc), dev_init(n,cnbell) }
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#endif
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#endif /* _SYS_DEV_CONS_H_ */
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