vsbus.c revision 1.20
1 /* $NetBSD: vsbus.c,v 1.20 1999/10/22 21:10:12 ragge Exp $ */ 2 /* 3 * Copyright (c) 1996, 1999 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 <vm/vm.h> 51 52 #define _VAX_BUS_DMA_PRIVATE 53 #include <machine/bus.h> 54 #include <machine/pte.h> 55 #include <machine/sid.h> 56 #include <machine/scb.h> 57 #include <machine/cpu.h> 58 #include <machine/trap.h> 59 #include <machine/nexus.h> 60 61 #include <machine/uvax.h> 62 #include <machine/ka410.h> 63 #include <machine/ka420.h> 64 #include <machine/ka43.h> 65 66 #include <machine/vsbus.h> 67 68 #include "ioconf.h" 69 70 int vsbus_match __P((struct device *, struct cfdata *, void *)); 71 void vsbus_attach __P((struct device *, struct device *, void *)); 72 int vsbus_print __P((void *, const char *)); 73 int vsbus_search __P((struct device *, struct cfdata *, void *)); 74 75 void ka410_attach __P((struct device *, struct device *, void *)); 76 void ka43_attach __P((struct device *, struct device *, void *)); 77 78 struct vax_bus_dma_tag vsbus_bus_dma_tag = { 79 0, 80 0, 81 0, 82 0, 83 0, 84 0, 85 _bus_dmamap_create, 86 _bus_dmamap_destroy, 87 _bus_dmamap_load, 88 _bus_dmamap_load_mbuf, 89 _bus_dmamap_load_uio, 90 _bus_dmamap_load_raw, 91 _bus_dmamap_unload, 92 _bus_dmamap_sync, 93 _bus_dmamem_alloc, 94 _bus_dmamem_free, 95 _bus_dmamem_map, 96 _bus_dmamem_unmap, 97 _bus_dmamem_mmap, 98 }; 99 100 struct vsbus_softc { 101 struct device sc_dev; 102 #if 0 103 volatile struct vs_cpu *sc_cpu; 104 #endif 105 u_char *sc_intmsk; /* Mask register */ 106 u_char *sc_intclr; /* Clear interrupt register */ 107 u_char *sc_intreq; /* Interrupt request register */ 108 u_char sc_mask; /* Interrupts to enable after autoconf */ 109 }; 110 111 struct cfattach vsbus_ca = { 112 sizeof(struct vsbus_softc), vsbus_match, vsbus_attach 113 }; 114 115 int 116 vsbus_print(aux, name) 117 void *aux; 118 const char *name; 119 { 120 struct vsbus_attach_args *va = aux; 121 122 printf(" csr 0x%lx vec %o ipl %x maskbit %d", va->va_paddr, 123 va->va_cvec & 511, va->va_br, va->va_maskno - 1); 124 return(UNCONF); 125 } 126 127 int 128 vsbus_match(parent, cf, aux) 129 struct device *parent; 130 struct cfdata *cf; 131 void *aux; 132 { 133 if (vax_bustype == VAX_VSBUS) 134 return 1; 135 return 0; 136 } 137 138 void 139 vsbus_attach(parent, self, aux) 140 struct device *parent, *self; 141 void *aux; 142 { 143 struct vsbus_softc *sc = (void *)self; 144 vaddr_t temp; 145 146 printf("\n"); 147 148 switch (vax_boardtype) { 149 case VAX_BTYP_49: 150 temp = vax_map_physmem(0x25c00000, 1); 151 sc->sc_intreq = (char *)temp + 12; 152 sc->sc_intclr = (char *)temp + 12; 153 sc->sc_intmsk = (char *)temp + 8; 154 break; 155 156 default: 157 temp = vax_map_physmem(VS_REGS, 1); 158 sc->sc_intreq = (char *)temp + 15; 159 sc->sc_intclr = (char *)temp + 15; 160 sc->sc_intmsk = (char *)temp + 12; 161 break; 162 } 163 164 /* 165 * First: find which interrupts we won't care about. 166 * There are interrupts that interrupt on a periodic basic 167 * that we don't want to interfere with the rest of the 168 * interrupt probing. 169 */ 170 *sc->sc_intmsk = 0; 171 *sc->sc_intclr = 0xff; 172 DELAY(1000000); /* Wait a second */ 173 sc->sc_mask = *sc->sc_intreq; 174 printf("%s: interrupt mask %x\n", self->dv_xname, sc->sc_mask); 175 /* 176 * now check for all possible devices on this "bus" 177 */ 178 config_search(vsbus_search, self, NULL); 179 180 /* Autoconfig finished, enable interrupts */ 181 *sc->sc_intmsk = ~sc->sc_mask; 182 } 183 184 int 185 vsbus_search(parent, cf, aux) 186 struct device *parent; 187 struct cfdata *cf; 188 void *aux; 189 { 190 struct vsbus_softc *sc = (void *)parent; 191 struct vsbus_attach_args va; 192 int i, vec, br; 193 u_char c; 194 195 va.va_paddr = cf->cf_loc[0]; 196 va.va_addr = vax_map_physmem(va.va_paddr, 1); 197 va.va_dmat = &vsbus_bus_dma_tag; 198 199 *sc->sc_intmsk = 0; 200 *sc->sc_intclr = 0xff; 201 scb_vecref(0, 0); /* Clear vector ref */ 202 203 i = (*cf->cf_attach->ca_match) (parent, cf, &va); 204 vax_unmap_physmem(va.va_addr, 1); 205 c = *sc->sc_intreq & ~sc->sc_mask; 206 if (i == 0) 207 goto forgetit; 208 if (i > 10) 209 c = sc->sc_mask; /* Fooling interrupt */ 210 else if (c == 0) 211 goto forgetit; 212 213 *sc->sc_intmsk = c; 214 DELAY(100); 215 *sc->sc_intmsk = 0; 216 va.va_maskno = ffs((u_int)c); 217 i = scb_vecref(&vec, &br); 218 if (i == 0) 219 goto fail; 220 if (vec == 0) 221 goto fail; 222 223 scb_vecalloc(vec, va.va_ivec, cf->cf_unit, SCB_ISTACK); 224 va.va_br = br; 225 va.va_cvec = vec; 226 227 config_attach(parent, cf, &va, vsbus_print); 228 return 0; 229 230 fail: 231 printf("%s%d at %s csr %x %s\n", 232 cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname, 233 cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt")); 234 forgetit: 235 return 0; 236 } 237 238 /* 239 * Sets a new interrupt mask. Returns the old one. 240 * Works like spl functions. 241 */ 242 unsigned char 243 vsbus_setmask(mask) 244 unsigned char mask; 245 { 246 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 247 unsigned char ch; 248 249 ch = *sc->sc_intmsk; 250 *sc->sc_intmsk = mask; 251 return ch; 252 } 253 254 /* 255 * Clears the interrupts in mask. 256 */ 257 void 258 vsbus_clrintr(mask) 259 unsigned char mask; 260 { 261 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 262 263 *sc->sc_intclr = mask; 264 } 265 266 /* 267 * Copy data from/to a user process' space from the DMA area. 268 * Use the physical memory directly. 269 */ 270 void 271 vsbus_copytoproc(p, from, to, len) 272 struct proc *p; 273 caddr_t from, to; 274 int len; 275 { 276 struct pte *pte; 277 paddr_t pa; 278 279 pte = uvtopte(TRUNC_PAGE(to), (&p->p_addr->u_pcb)); 280 if ((vaddr_t)to & PGOFSET) { 281 int cz = ROUND_PAGE(to) - (vaddr_t)to; 282 283 pa = (pte->pg_pfn << VAX_PGSHIFT) | (NBPG - cz) | KERNBASE; 284 bcopy(from, (caddr_t)pa, min(cz, len)); 285 from += cz; 286 to += cz; 287 len -= cz; 288 pte += 8; /* XXX */ 289 } 290 while (len > 0) { 291 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE; 292 bcopy(from, (caddr_t)pa, min(NBPG, len)); 293 from += NBPG; 294 to += NBPG; 295 len -= NBPG; 296 pte += 8; /* XXX */ 297 } 298 } 299 300 void 301 vsbus_copyfromproc(p, from, to, len) 302 struct proc *p; 303 caddr_t from, to; 304 int len; 305 { 306 struct pte *pte; 307 paddr_t pa; 308 309 pte = uvtopte(TRUNC_PAGE(from), (&p->p_addr->u_pcb)); 310 if ((vaddr_t)from & PGOFSET) { 311 int cz = ROUND_PAGE(from) - (vaddr_t)from; 312 313 pa = (pte->pg_pfn << VAX_PGSHIFT) | (NBPG - cz) | KERNBASE; 314 bcopy((caddr_t)pa, to, min(cz, len)); 315 from += cz; 316 to += cz; 317 len -= cz; 318 pte += 8; /* XXX */ 319 } 320 while (len > 0) { 321 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE; 322 bcopy((caddr_t)pa, to, min(NBPG, len)); 323 from += NBPG; 324 to += NBPG; 325 len -= NBPG; 326 pte += 8; /* XXX */ 327 } 328 } 329
Indexes created Tue Sep 30 11:09:46 GMT 2025