vsbus.c revision 1.19
1 /* $NetBSD: vsbus.c,v 1.19 1999/08/27 17:45:57 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 #define _VAX_BUS_DMA_PRIVATE 51 #include <machine/bus.h> 52 #include <machine/pte.h> 53 #include <machine/sid.h> 54 #include <machine/scb.h> 55 #include <machine/cpu.h> 56 #include <machine/trap.h> 57 #include <machine/nexus.h> 58 59 #include <machine/uvax.h> 60 #include <machine/ka410.h> 61 #include <machine/ka420.h> 62 #include <machine/ka43.h> 63 64 #include <machine/vsbus.h> 65 66 #include "ioconf.h" 67 68 int vsbus_match __P((struct device *, struct cfdata *, void *)); 69 void vsbus_attach __P((struct device *, struct device *, void *)); 70 int vsbus_print __P((void *, const char *)); 71 int vsbus_search __P((struct device *, struct cfdata *, void *)); 72 73 void ka410_attach __P((struct device *, struct device *, void *)); 74 void ka43_attach __P((struct device *, struct device *, void *)); 75 76 struct vax_bus_dma_tag vsbus_bus_dma_tag = { 77 0, 78 0, 79 0, 80 0, 81 0, 82 0, 83 _bus_dmamap_create, 84 _bus_dmamap_destroy, 85 _bus_dmamap_load, 86 _bus_dmamap_load_mbuf, 87 _bus_dmamap_load_uio, 88 _bus_dmamap_load_raw, 89 _bus_dmamap_unload, 90 _bus_dmamap_sync, 91 _bus_dmamem_alloc, 92 _bus_dmamem_free, 93 _bus_dmamem_map, 94 _bus_dmamem_unmap, 95 _bus_dmamem_mmap, 96 }; 97 98 struct vsbus_softc { 99 struct device sc_dev; 100 #if 0 101 volatile struct vs_cpu *sc_cpu; 102 #endif 103 u_char *sc_intmsk; /* Mask register */ 104 u_char *sc_intclr; /* Clear interrupt register */ 105 u_char *sc_intreq; /* Interrupt request register */ 106 u_char sc_mask; /* Interrupts to enable after autoconf */ 107 }; 108 109 struct cfattach vsbus_ca = { 110 sizeof(struct vsbus_softc), vsbus_match, vsbus_attach 111 }; 112 113 int 114 vsbus_print(aux, name) 115 void *aux; 116 const char *name; 117 { 118 struct vsbus_attach_args *va = aux; 119 120 printf(" csr 0x%lx vec %o ipl %x maskbit %d", va->va_paddr, 121 va->va_cvec & 511, va->va_br, va->va_maskno - 1); 122 return(UNCONF); 123 } 124 125 int 126 vsbus_match(parent, cf, aux) 127 struct device *parent; 128 struct cfdata *cf; 129 void *aux; 130 { 131 if (vax_bustype == VAX_VSBUS) 132 return 1; 133 return 0; 134 } 135 136 void 137 vsbus_attach(parent, self, aux) 138 struct device *parent, *self; 139 void *aux; 140 { 141 struct vsbus_softc *sc = (void *)self; 142 vaddr_t temp; 143 144 printf("\n"); 145 146 switch (vax_boardtype) { 147 case VAX_BTYP_49: 148 temp = vax_map_physmem(0x25c00000, 1); 149 sc->sc_intreq = (char *)temp + 12; 150 sc->sc_intclr = (char *)temp + 12; 151 sc->sc_intmsk = (char *)temp + 8; 152 break; 153 154 default: 155 temp = vax_map_physmem(VS_REGS, 1); 156 sc->sc_intreq = (char *)temp + 15; 157 sc->sc_intclr = (char *)temp + 15; 158 sc->sc_intmsk = (char *)temp + 12; 159 break; 160 } 161 162 /* 163 * First: find which interrupts we won't care about. 164 * There are interrupts that interrupt on a periodic basic 165 * that we don't want to interfere with the rest of the 166 * interrupt probing. 167 */ 168 *sc->sc_intmsk = 0; 169 *sc->sc_intclr = 0xff; 170 DELAY(1000000); /* Wait a second */ 171 sc->sc_mask = *sc->sc_intreq; 172 printf("%s: interrupt mask %x\n", self->dv_xname, sc->sc_mask); 173 /* 174 * now check for all possible devices on this "bus" 175 */ 176 config_search(vsbus_search, self, NULL); 177 178 /* Autoconfig finished, enable interrupts */ 179 *sc->sc_intmsk = ~sc->sc_mask; 180 } 181 182 int 183 vsbus_search(parent, cf, aux) 184 struct device *parent; 185 struct cfdata *cf; 186 void *aux; 187 { 188 struct vsbus_softc *sc = (void *)parent; 189 struct vsbus_attach_args va; 190 int i, vec, br; 191 u_char c; 192 193 va.va_paddr = cf->cf_loc[0]; 194 va.va_addr = vax_map_physmem(va.va_paddr, 1); 195 va.va_dmat = &vsbus_bus_dma_tag; 196 197 *sc->sc_intmsk = 0; 198 *sc->sc_intclr = 0xff; 199 scb_vecref(0, 0); /* Clear vector ref */ 200 201 i = (*cf->cf_attach->ca_match) (parent, cf, &va); 202 vax_unmap_physmem(va.va_addr, 1); 203 c = *sc->sc_intreq & ~sc->sc_mask; 204 if (i == 0) 205 goto forgetit; 206 if (i > 10) 207 c = sc->sc_mask; /* Fooling interrupt */ 208 else if (c == 0) 209 goto forgetit; 210 211 *sc->sc_intmsk = c; 212 DELAY(100); 213 *sc->sc_intmsk = 0; 214 va.va_maskno = ffs((u_int)c); 215 i = scb_vecref(&vec, &br); 216 if (i == 0) 217 goto fail; 218 if (vec == 0) 219 goto fail; 220 221 scb_vecalloc(vec, va.va_ivec, cf->cf_unit, SCB_ISTACK); 222 va.va_br = br; 223 va.va_cvec = vec; 224 225 config_attach(parent, cf, &va, vsbus_print); 226 return 0; 227 228 fail: 229 printf("%s%d at %s csr %x %s\n", 230 cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname, 231 cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt")); 232 forgetit: 233 return 0; 234 } 235 236 /* 237 * Sets a new interrupt mask. Returns the old one. 238 * Works like spl functions. 239 */ 240 unsigned char 241 vsbus_setmask(mask) 242 unsigned char mask; 243 { 244 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 245 unsigned char ch; 246 247 ch = *sc->sc_intmsk; 248 *sc->sc_intmsk = mask; 249 return ch; 250 } 251 252 /* 253 * Clears the interrupts in mask. 254 */ 255 void 256 vsbus_clrintr(mask) 257 unsigned char mask; 258 { 259 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 260 261 *sc->sc_intclr = mask; 262 } 263 264 #ifdef notyet 265 /* 266 * Allocate/free DMA pages and other bus resources. 267 * VS2000: All DMA and register access must be exclusive. 268 * VS3100: DMA area may be accessed by anyone anytime. 269 * MFM/SCSI: Don't touch reg's while DMA is active. 270 * SCSI/SCSI: Legal to touch any register anytime. 271 */ 272 273 274 #endif 275
Indexes created Wed Oct 01 07:09:59 GMT 2025