1 /* $NetBSD: uba_mainbus.c,v 1.10 2010/12/14 23:38:30 matt 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 1.10 2010/12/14 23:38:30 matt Exp $"); 72 73 #define _VAX_BUS_DMA_PRIVATE 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/bus.h> 78 #include <sys/cpu.h> 79 #include <sys/device.h> 80 81 #include <machine/nexus.h> 82 #include <machine/sgmap.h> 83 #include <machine/mainbus.h> 84 85 #include <dev/qbus/ubavar.h> 86 87 #include <vax/uba/uba_common.h> 88 89 #include "ioconf.h" 90 91 /* Some Qbus-specific defines */ 92 #define QBASIZE (8192 * VAX_NBPG) 93 #define QBAMAP 0x20088000 94 #define QIOPAGE 0x20000000 95 96 /* 97 * The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems. 98 * It has an address space of 4MB (22 address bits), therefore the name, 99 * and is hardware compatible with all 16 and 18 bits Q-bus devices. 100 */ 101 static int qba_match(device_t, cfdata_t, void *); 102 static void qba_attach(device_t, device_t, void *); 103 static void qba_beforescan(struct uba_softc*); 104 static void qba_init(struct uba_softc*); 105 106 CFATTACH_DECL_NEW(uba_mainbus, sizeof(struct uba_vsoftc), 107 qba_match, qba_attach, NULL, NULL); 108 109 extern struct vax_bus_space vax_mem_bus_space; 110 111 int 112 qba_match(device_t parent, cfdata_t cf, void *aux) 113 { 114 struct mainbus_attach_args * const ma = aux; 115 116 return !strcmp(uba_cd.cd_name, ma->ma_type); 117 } 118 119 void 120 qba_attach(device_t parent, device_t self, void *aux) 121 { 122 struct mainbus_attach_args * const ma = aux; 123 struct uba_vsoftc * const sc = device_private(self); 124 125 aprint_normal(": Q22\n"); 126 127 sc->uv_sc.uh_dev = self; 128 /* 129 * Fill in bus specific data. 130 */ 131 sc->uv_sc.uh_beforescan = qba_beforescan; 132 sc->uv_sc.uh_ubainit = qba_init; 133 sc->uv_sc.uh_iot = ma->ma_iot; 134 sc->uv_sc.uh_dmat = &sc->uv_dmat; 135 136 /* 137 * Fill in variables used by the sgmap system. 138 */ 139 sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */ 140 sc->uv_addr = QBAMAP; /* Physical address of map registers */ 141 142 uba_dma_init(sc); 143 uba_attach(&sc->uv_sc, QIOPAGE); 144 } 145 146 /* 147 * Called when the QBA is set up; to enable DMA access from 148 * QBA devices to main memory. 149 */ 150 void 151 qba_beforescan(struct uba_softc *sc) 152 { 153 #define QIPCR 0x1f40 154 #define Q_LMEAE 0x20 155 bus_space_write_2(sc->uh_tag, sc->uh_ioh, QIPCR, Q_LMEAE); 156 } 157 158 void 159 qba_init(struct uba_softc *sc) 160 { 161 mtpr(0, PR_IUR); 162 DELAY(500000); 163 qba_beforescan(sc); 164 } 165