uba_mainbus.c revision 1.7
1 /* $NetBSD: uba_mainbus.c,v 1.7 2003/08/07 16:30:15 agc Exp $ */ 2 /* 3 * Copyright (c) 1982, 1986 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)uba.c 7.10 (Berkeley) 12/16/90 31 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 32 */ 33 34 /* 35 * Copyright (c) 1996 Jonathan Stone. 36 * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)uba.c 7.10 (Berkeley) 12/16/90 67 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.7 2003/08/07 16:30:15 agc Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/device.h> 75 #include <sys/systm.h> 76 77 #define _VAX_BUS_DMA_PRIVATE 78 #include <machine/bus.h> 79 #include <machine/mtpr.h> 80 #include <machine/nexus.h> 81 #include <machine/cpu.h> 82 #include <machine/sgmap.h> 83 84 #include <dev/qbus/ubavar.h> 85 86 #include <arch/vax/uba/uba_common.h> 87 88 /* Some Qbus-specific defines */ 89 #define QBASIZE (8192 * VAX_NBPG) 90 #define QBAMAP 0x20088000 91 #define QIOPAGE 0x20000000 92 93 /* 94 * The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems. 95 * It has an address space of 4MB (22 address bits), therefore the name, 96 * and is hardware compatible with all 16 and 18 bits Q-bus devices. 97 */ 98 static int qba_match __P((struct device *, struct cfdata *, void *)); 99 static void qba_attach __P((struct device *, struct device *, void *)); 100 static void qba_beforescan __P((struct uba_softc*)); 101 static void qba_init __P((struct uba_softc*)); 102 103 CFATTACH_DECL(uba_mainbus, sizeof(struct uba_vsoftc), 104 qba_match, qba_attach, NULL, NULL); 105 106 extern struct vax_bus_space vax_mem_bus_space; 107 108 int 109 qba_match(parent, vcf, aux) 110 struct device *parent; 111 struct cfdata *vcf; 112 void *aux; 113 { 114 struct bp_conf *bp = aux; 115 116 if (strcmp(bp->type, "uba")) 117 return 0; 118 119 return 1; 120 } 121 122 void 123 qba_attach(parent, self, aux) 124 struct device *parent, *self; 125 void *aux; 126 { 127 struct uba_vsoftc *sc = (void *)self; 128 129 printf(": Q22\n"); 130 /* 131 * Fill in bus specific data. 132 */ 133 sc->uv_sc.uh_beforescan = qba_beforescan; 134 sc->uv_sc.uh_ubainit = qba_init; 135 sc->uv_sc.uh_iot = &vax_mem_bus_space; 136 sc->uv_sc.uh_dmat = &sc->uv_dmat; 137 138 /* 139 * Fill in variables used by the sgmap system. 140 */ 141 sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */ 142 sc->uv_addr = QBAMAP; /* Physical address of map registers */ 143 144 uba_dma_init(sc); 145 uba_attach(&sc->uv_sc, QIOPAGE); 146 } 147 148 /* 149 * Called when the QBA is set up; to enable DMA access from 150 * QBA devices to main memory. 151 */ 152 void 153 qba_beforescan(sc) 154 struct uba_softc *sc; 155 { 156 #define QIPCR 0x1f40 157 #define Q_LMEAE 0x20 158 bus_space_write_2(sc->uh_tag, sc->uh_ioh, QIPCR, Q_LMEAE); 159 } 160 161 void 162 qba_init(sc) 163 struct uba_softc *sc; 164 { 165 mtpr(0, PR_IUR); 166 DELAY(500000); 167 qba_beforescan(sc); 168 } 169
Indexes created Thu Oct 23 22:10:10 GMT 2025