vsbus.c revision 1.21
1 /* $NetBSD: vsbus.c,v 1.21 2000/01/24 02:40:35 matt 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 static 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 extern struct vax_bus_space vax_mem_bus_space; 101 102 struct vsbus_softc { 103 struct device sc_dev; 104 #if 0 105 volatile struct vs_cpu *sc_cpu; 106 #endif 107 u_char *sc_intmsk; /* Mask register */ 108 u_char *sc_intclr; /* Clear interrupt register */ 109 u_char *sc_intreq; /* Interrupt request register */ 110 u_char sc_mask; /* Interrupts to enable after autoconf */ 111 struct vax_bus_dma_tag sc_dmatag; 112 }; 113 114 struct cfattach vsbus_ca = { 115 sizeof(struct vsbus_softc), vsbus_match, vsbus_attach 116 }; 117 118 uint32_t *vsbus_iomap; 119 120 int 121 vsbus_print(aux, name) 122 void *aux; 123 const char *name; 124 { 125 struct vsbus_attach_args *va = aux; 126 127 printf(" csr 0x%lx vec %o ipl %x maskbit %d", va->va_paddr, 128 va->va_cvec & 511, va->va_br, va->va_maskno - 1); 129 return(UNCONF); 130 } 131 132 int 133 vsbus_match(parent, cf, aux) 134 struct device *parent; 135 struct cfdata *cf; 136 void *aux; 137 { 138 if (vax_bustype == VAX_VSBUS) 139 return 1; 140 return 0; 141 } 142 143 void 144 vsbus_attach(parent, self, aux) 145 struct device *parent, *self; 146 void *aux; 147 { 148 struct vsbus_softc *sc = (void *)self; 149 vaddr_t temp; 150 151 printf("\n"); 152 153 sc->sc_dmatag = vsbus_bus_dma_tag; 154 155 switch (vax_boardtype) { 156 case VAX_BTYP_49: 157 temp = vax_map_physmem(0x25c00000, 1); 158 sc->sc_intreq = (char *)temp + 12; 159 sc->sc_intclr = (char *)temp + 12; 160 sc->sc_intmsk = (char *)temp + 8; 161 break; 162 163 case VAX_BTYP_48: 164 case VAX_BTYP_46: 165 /* FALL THROUGH */ 166 167 default: 168 temp = vax_map_physmem(VS_REGS, 1); 169 sc->sc_intreq = (char *)temp + 15; 170 sc->sc_intclr = (char *)temp + 15; 171 sc->sc_intmsk = (char *)temp + 12; 172 break; 173 } 174 175 /* 176 * First: find which interrupts we won't care about. 177 * There are interrupts that interrupt on a periodic basic 178 * that we don't want to interfere with the rest of the 179 * interrupt probing. 180 */ 181 *sc->sc_intmsk = 0; 182 *sc->sc_intclr = 0xff; 183 DELAY(1000000); /* Wait a second */ 184 sc->sc_mask = *sc->sc_intreq; 185 printf("%s: interrupt mask %x\n", self->dv_xname, sc->sc_mask); 186 /* 187 * now check for all possible devices on this "bus" 188 */ 189 config_search(vsbus_search, self, NULL); 190 191 /* Autoconfig finished, enable interrupts */ 192 *sc->sc_intmsk = ~sc->sc_mask; 193 } 194 195 int 196 vsbus_search(parent, cf, aux) 197 struct device *parent; 198 struct cfdata *cf; 199 void *aux; 200 { 201 struct vsbus_softc *sc = (void *)parent; 202 struct vsbus_attach_args va; 203 int i, vec, br; 204 u_char c; 205 206 va.va_paddr = cf->cf_loc[0]; 207 va.va_addr = vax_map_physmem(va.va_paddr, 1); 208 va.va_dmat = &sc->sc_dmatag; 209 va.va_iot = &vax_mem_bus_space; 210 211 *sc->sc_intmsk = 0; 212 *sc->sc_intclr = 0xff; 213 scb_vecref(0, 0); /* Clear vector ref */ 214 215 i = (*cf->cf_attach->ca_match) (parent, cf, &va); 216 vax_unmap_physmem(va.va_addr, 1); 217 c = *sc->sc_intreq & ~sc->sc_mask; 218 if (i == 0) 219 goto forgetit; 220 if (i > 10) 221 c = sc->sc_mask; /* Fooling interrupt */ 222 else if (c == 0) 223 goto forgetit; 224 225 *sc->sc_intmsk = c; 226 DELAY(100); 227 *sc->sc_intmsk = 0; 228 va.va_maskno = ffs((u_int)c); 229 i = scb_vecref(&vec, &br); 230 if (i == 0) 231 goto fail; 232 if (vec == 0) 233 goto fail; 234 235 va.va_br = br; 236 va.va_cvec = vec; 237 238 config_attach(parent, cf, &va, vsbus_print); 239 return 0; 240 241 fail: 242 printf("%s%d at %s csr %x %s\n", 243 cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname, 244 cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt")); 245 forgetit: 246 return 0; 247 } 248 249 /* 250 * Sets a new interrupt mask. Returns the old one. 251 * Works like spl functions. 252 */ 253 unsigned char 254 vsbus_setmask(mask) 255 unsigned char mask; 256 { 257 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 258 unsigned char ch; 259 260 ch = *sc->sc_intmsk; 261 *sc->sc_intmsk = mask; 262 return ch; 263 } 264 265 /* 266 * Clears the interrupts in mask. 267 */ 268 void 269 vsbus_clrintr(mask) 270 unsigned char mask; 271 { 272 struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; 273 274 *sc->sc_intclr = mask; 275 } 276 277 /* 278 * Copy data from/to a user process' space from the DMA area. 279 * Use the physical memory directly. 280 */ 281 void 282 vsbus_copytoproc(p, from, to, len) 283 struct proc *p; 284 caddr_t from, to; 285 int len; 286 { 287 struct pte *pte; 288 paddr_t pa; 289 290 pte = uvtopte(TRUNC_PAGE(to), (&p->p_addr->u_pcb)); 291 if ((vaddr_t)to & PGOFSET) { 292 int cz = ROUND_PAGE(to) - (vaddr_t)to; 293 294 pa = (pte->pg_pfn << VAX_PGSHIFT) | (NBPG - cz) | KERNBASE; 295 bcopy(from, (caddr_t)pa, min(cz, len)); 296 from += cz; 297 to += cz; 298 len -= cz; 299 pte += 8; /* XXX */ 300 } 301 while (len > 0) { 302 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE; 303 bcopy(from, (caddr_t)pa, min(NBPG, len)); 304 from += NBPG; 305 to += NBPG; 306 len -= NBPG; 307 pte += 8; /* XXX */ 308 } 309 } 310 311 void 312 vsbus_copyfromproc(p, from, to, len) 313 struct proc *p; 314 caddr_t from, to; 315 int len; 316 { 317 struct pte *pte; 318 paddr_t pa; 319 320 pte = uvtopte(TRUNC_PAGE(from), (&p->p_addr->u_pcb)); 321 if ((vaddr_t)from & PGOFSET) { 322 int cz = ROUND_PAGE(from) - (vaddr_t)from; 323 324 pa = (pte->pg_pfn << VAX_PGSHIFT) | (NBPG - cz) | KERNBASE; 325 bcopy((caddr_t)pa, to, min(cz, len)); 326 from += cz; 327 to += cz; 328 len -= cz; 329 pte += 8; /* XXX */ 330 } 331 while (len > 0) { 332 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE; 333 bcopy((caddr_t)pa, to, min(NBPG, len)); 334 from += NBPG; 335 to += NBPG; 336 len -= NBPG; 337 pte += 8; /* XXX */ 338 } 339 } 340
Indexes created Tue Sep 30 07:10:03 GMT 2025