sebuf.c revision 1.1
1 /* $NetBSD: sebuf.c,v 1.1 1997/10/17 03:39:47 gwr Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Sun3/E SCSI/Ethernet board. This is a VME board with some memory, 41 * an Intel Ether, and an NCR5380 SCSI with a cheap DMA engine. 42 * Note that the SCSI DMA engine can ONLY access the memory on 43 * the SE board, NOT the main memory, because it can not master 44 * VME transfers. 45 * 46 * This driver ("sebuf") is the parent of two child drivers: 47 * se: yet another variant of NCR 5380 SCSI H/W 48 * ie: yet anotehr variant of Intel 82586 Ethernet 49 * 50 * The job of this parent is to map the memory and partition it for 51 * the two children. This driver has no device nodes. 52 */ 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/conf.h> 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #include <sys/malloc.h> 60 #include <sys/mman.h> 61 #include <sys/proc.h> 62 #include <sys/tty.h> 63 64 #include <vm/vm.h> 65 66 #include <machine/autoconf.h> 67 #include <machine/cpu.h> 68 69 #include "sereg.h" 70 #include "sevar.h" 71 72 struct sebuf_softc { 73 struct device sc_dev; /* base device (required) */ 74 struct sebuf_regs *sc_regs; 75 }; 76 77 /* 78 * Autoconfig attachment 79 */ 80 81 static int sebuf_match __P((struct device *, struct cfdata *, void *)); 82 static void sebuf_attach __P((struct device *, struct device *, void *)); 83 static int sebuf_print __P((void *, const char *)); 84 85 struct cfattach sebuf_ca = { 86 sizeof(struct sebuf_softc), sebuf_match, sebuf_attach 87 }; 88 89 struct cfdriver sebuf_cd = { 90 NULL, "sebuf", DV_DULL 91 }; 92 93 94 static int 95 sebuf_match(parent, cf, args) 96 struct device *parent; 97 struct cfdata *cf; 98 void *args; 99 { 100 struct confargs *ca = args; 101 int x; 102 103 if (ca->ca_paddr == -1) 104 return (0); 105 106 /* Is it there at all? */ 107 x = bus_peek(ca->ca_bustype, ca->ca_paddr, 2); 108 if (x == -1) 109 return (0); 110 111 /* How about the middle of the IE buffer? */ 112 x = bus_peek(ca->ca_bustype, ca->ca_paddr + 0x18000, 2); 113 if (x == -1) 114 return (0); 115 116 /* Default interrupt priority always splbio==2 */ 117 if (ca->ca_intpri == -1) 118 ca->ca_intpri = 2; 119 120 return (1); 121 } 122 123 static void 124 sebuf_attach(parent, self, args) 125 struct device *parent, *self; 126 void *args; 127 { 128 struct sebuf_softc *sc = (struct sebuf_softc *)self; 129 struct confargs *ca = args; 130 struct sebuf_attach_args aa; 131 struct sebuf_regs *regs; 132 133 if (ca->ca_intpri != 2) 134 panic("sebuf: bad level"); 135 136 /* Map in the whole board. */ 137 regs = (struct sebuf_regs *) 138 bus_mapin(ca->ca_bustype, ca->ca_paddr, 139 sizeof(struct sebuf_regs)); 140 if (regs == NULL) 141 panic("sebuf_attach"); 142 sc->sc_regs = regs; 143 144 /* Attach the SCSI child. */ 145 aa.ca = *ca; /* structure copy */ 146 aa.ca.ca_paddr = 0; /* prevent misuse */ 147 aa.name = "se"; 148 aa.buf = ®s->se_scsi_buf[0]; 149 aa.blen = SE_NCRBUFSIZE; 150 aa.regs = ®s->se_scsi_regs; 151 (void) config_found(self, (void *) &aa, sebuf_print); 152 153 /* Attach the Ethernet child. */ 154 aa.ca.ca_intpri++; 155 aa.ca.ca_intvec++; 156 aa.name = "ie"; 157 aa.buf = ®s->se_eth_buf[0]; 158 aa.blen = SE_IEBUFSIZE; 159 aa.regs = ®s->se_eth_regs; 160 (void) config_found(self, (void *) &aa, sebuf_print); 161 } 162 163 static int 164 sebuf_print(aux, name) 165 void *aux; 166 const char *name; 167 { 168 169 if (name != NULL) 170 printf("%s: ", name); 171 172 return UNCONF; 173 } 174
Indexes created Tue Sep 23 02:09:52 GMT 2025