os161-1.99
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lrandom_att.c
00001 /*
00002  * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
00003  *      The President and Fellows of Harvard College.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the University nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  */
00029 
00030 #include <types.h>
00031 #include <lib.h>
00032 #include <lamebus/lamebus.h>
00033 #include <lamebus/lrandom.h>
00034 #include "autoconf.h"
00035 
00036 /* Lowest revision we support */
00037 #define LOW_VERSION   1
00038 /* Highest revision we support */
00039 #define HIGH_VERSION  1
00040 
00041 struct lrandom_softc *
00042 attach_lrandom_to_lamebus(int lrandomno, struct lamebus_softc *sc)
00043 {
00044         struct lrandom_softc *lr;
00045         int slot = lamebus_probe(sc, LB_VENDOR_CS161, LBCS161_RANDOM,
00046                                  LOW_VERSION, HIGH_VERSION);
00047         if (slot < 0) {
00048                 return NULL;
00049         }
00050 
00051         lr = kmalloc(sizeof(struct lrandom_softc));
00052         if (lr==NULL) {
00053                 return NULL;
00054         }
00055 
00056         (void)lrandomno;  // unused
00057 
00058         lr->lr_bus = sc;
00059         lr->lr_buspos = slot;
00060 
00061         lamebus_mark(sc, slot);
00062 
00063         return lr;
00064 }
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