vsbus.c revision 1.16
1 /* $NetBSD: vsbus.c,v 1.16 1999/03/13 15:16:48 ragge Exp $ */ 2 /* 3 * Copyright (c) 1996 Ludd, University of Lule}, Sweden. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Ludd by Bertram Barth. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed at Ludd, University of 19 * Lule}, Sweden and its contributors. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/buf.h> 38 #include <sys/conf.h> 39 #include <sys/file.h> 40 #include <sys/ioctl.h> 41 #include <sys/proc.h> 42 #include <sys/user.h> 43 #include <sys/map.h> 44 #include <sys/device.h> 45 #include <sys/dkstat.h> 46 #include <sys/disklabel.h> 47 #include <sys/syslog.h> 48 #include <sys/stat.h> 49 50 #include <machine/pte.h> 51 #include <machine/sid.h> 52 #include <machine/scb.h> 53 #include <machine/cpu.h> 54 #include <machine/trap.h> 55 #include <machine/nexus.h> 56 57 #include <machine/uvax.h> 58 #include <machine/ka410.h> 59 #include <machine/ka420.h> 60 #include <machine/ka43.h> 61 62 #include <machine/vsbus.h> 63 64 #include "ioconf.h" 65 66 int vsbus_match __P((struct device *, struct cfdata *, void *)); 67 void vsbus_attach __P((struct device *, struct device *, void *)); 68 int vsbus_print __P((void *, const char *)); 69 int vsbus_search __P((struct device *, struct cfdata *, void *)); 70 71 void ka410_attach __P((struct device *, struct device *, void *)); 72 void ka43_attach __P((struct device *, struct device *, void *)); 73 74 struct vsbus_softc { 75 struct device sc_dev; 76 volatile struct vs_cpu *sc_cpu; 77 u_char sc_mask; /* Interrupts to enable after autoconf */ 78 }; 79 80 struct cfattach vsbus_ca = { 81 sizeof(struct vsbus_softc), vsbus_match, vsbus_attach 82 }; 83 84 int 85 vsbus_print(aux, name) 86 void *aux; 87 const char *name; 88 { 89 struct vsbus_attach_args *va = aux; 90 91 printf(" csr 0x%lx vec %o ipl %x maskbit %x", va->va_paddr, 92 va->va_cvec & 511, va->va_br, va->va_maskno - 1); 93 return(UNCONF); 94 } 95 96 int 97 vsbus_match(parent, cf, aux) 98 struct device *parent; 99 struct cfdata *cf; 100 void *aux; 101 { 102 struct bp_conf *bp = aux; 103 104 if (strcmp(bp->type, "vsbus")) 105 return 0; 106 /* 107 * on machines which can have it, the vsbus is always there 108 */ 109 if ((vax_bustype & VAX_VSBUS) == 0) 110 return (0); 111 112 return (1); 113 } 114 115 void 116 vsbus_attach(parent, self, aux) 117 struct device *parent, *self; 118 void *aux; 119 { 120 struct vsbus_softc *sc = (void *)self; 121 122 printf("\n"); 123 124 sc->sc_cpu = (void *)vax_map_physmem(VS_REGS, 1); 125 126 /* 127 * First: find which interrupts we won't care about. 128 * There are interrupts that interrupt on a periodic basic 129 * that we don't want to interfere with the rest of the 130 * interrupt probing. 131 */ 132 sc->sc_cpu->vc_intmsk = 0; 133 sc->sc_cpu->vc_intclr = 0xff; 134 DELAY(1000000); /* Wait a second */ 135 sc->sc_mask = sc->sc_cpu->vc_intreq; 136 printf("%s: interrupt mask %x\n", self->dv_xname, sc->sc_mask); 137 /* 138 * now check for all possible devices on this "bus" 139 */ 140 config_search(vsbus_search, self, NULL); 141 142 /* Autoconfig finished, enable interrupts */ 143 sc->sc_cpu->vc_intmsk = ~sc->sc_mask; 144 } 145 146 int 147 vsbus_search(parent, cf, aux) 148 struct device *parent; 149 struct cfdata *cf; 150 void *aux; 151 { 152 struct vsbus_softc *sc = (void *)parent; 153 struct vsbus_attach_args va; 154 int i, vec, br; 155 u_char c; 156 157 va.va_paddr = cf->cf_loc[0]; 158 va.va_addr = vax_map_physmem(va.va_paddr, 1); 159 160 sc->sc_cpu->vc_intmsk = 0; 161 sc->sc_cpu->vc_intclr = 0xff; 162 scb_vecref(0, 0); /* Clear vector ref */ 163 164 i = (*cf->cf_attach->ca_match) (parent, cf, &va); 165 vax_unmap_physmem(va.va_addr, 1); 166 c = sc->sc_cpu->vc_intreq & ~sc->sc_mask; 167 if (i > 10) 168 c = sc->sc_mask; /* Fooling interrupt */ 169 if (c == 0 || i == 0) 170 goto forgetit; 171 172 sc->sc_cpu->vc_intmsk = c; 173 DELAY(100); 174 sc->sc_cpu->vc_intmsk = 0; 175 va.va_maskno = ffs((u_int)c); 176 i = scb_vecref(&vec, &br); 177 if (i == 0) 178 goto fail; 179 if (vec == 0) 180 goto fail; 181 182 scb_vecalloc(vec, va.va_ivec, cf->cf_unit, SCB_ISTACK); 183 va.va_br = br; 184 va.va_cvec = vec; 185 186 config_attach(parent, cf, &va, vsbus_print); 187 return 0; 188 189 fail: 190 printf("%s%d at %s csr %x %s\n", 191 cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname, 192 cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt")); 193 forgetit: 194 return 0; 195 } 196 197 /* 198 * Sets a new interrupt mask. Returns the old one. 199 * Works like spl functions. 200 */ 201 unsigned char 202 vsbus_setmask(mask) 203 unsigned char mask; 204 { 205 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 206 unsigned char ch; 207 208 ch = sc->sc_cpu->vc_intmsk; 209 sc->sc_cpu->vc_intmsk = mask; 210 return ch; 211 } 212 213 /* 214 * Clears the interrupts in mask. 215 */ 216 void 217 vsbus_clrintr(mask) 218 unsigned char mask; 219 { 220 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 221 222 sc->sc_cpu->vc_intclr = mask; 223 } 224 225 #ifdef notyet 226 /* 227 * Allocate/free DMA pages and other bus resources. 228 * VS2000: All DMA and register access must be exclusive. 229 * VS3100: DMA area may be accessed by anyone anytime. 230 * MFM/SCSI: Don't touch reg's while DMA is active. 231 * SCSI/SCSI: Legal to touch any register anytime. 232 */ 233 234 235 #endif 236
Indexes created Tue Sep 30 11:09:46 GMT 2025