if_le_vme.c revision 1.1
1 /* $NetBSD */ 2 3 /*- 4 * Copyright (c) 1997 Leo Weppelman. All rights reserved. 5 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Ralph Campbell and Rick Macklem. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 41 */ 42 43 #include "bpfilter.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/mbuf.h> 48 #include <sys/syslog.h> 49 #include <sys/socket.h> 50 #include <sys/device.h> 51 52 #include <net/if.h> 53 54 #ifdef INET 55 #include <netinet/in.h> 56 #include <netinet/if_ether.h> 57 #endif 58 59 #include <machine/cpu.h> 60 #include <machine/bus.h> 61 #include <machine/iomap.h> 62 #include <machine/scu.h> 63 64 #include <atari/atari/device.h> 65 #include <atari/atari/intr.h> 66 67 #include <dev/ic/am7990reg.h> 68 #include <dev/ic/am7990var.h> 69 70 #include <atari/vme/vmevar.h> 71 #include <atari/vme/if_levar.h> 72 73 struct le_addresses { 74 u_long reg_addr; 75 u_long mem_addr; 76 int irq; 77 } lestd[] = { 78 { 0xfe00fff0, 0xfe010000, IRQUNK }, /* Riebl VME */ 79 { 0xffcffff0, 0xffcf0000, 5 }, /* PAM VME */ 80 { 0xfecffff0, 0xfecf0000, 5 } /* Rhotron VME */ 81 }; 82 83 #define NLESTD (sizeof(lestd) / sizeof(lestd[0])) 84 85 /* 86 * All cards have 64KB RAM. However.... On the Riebl cards the area 87 * between the offsets 0xee70-0xeec0 is used to store config data. 88 */ 89 #define MEMSIZE (64*1024) 90 91 /* 92 * Default mac for RIEBL cards without a (working) battery. The first 4 bytes 93 * are the manufacturer id. 94 */ 95 static u_char riebl_def_mac[] = { 96 0x00, 0x00, 0x36, 0x04, 0x00, 0x00 97 }; 98 99 static int le_intr __P((struct le_softc *, int)); 100 static void lepseudointr __P((struct le_softc *, void *)); 101 static int le_vme_match __P((struct device *, struct cfdata *, void *)); 102 static void le_vme_attach __P((struct device *, struct device *, void *)); 103 static int probe_addresses __P((bus_space_tag_t *, bus_space_tag_t *, 104 bus_space_handle_t *, bus_space_handle_t *)); 105 static void riebl_skip_reserved_area __P((struct am7990_softc *)); 106 107 struct cfattach le_vme_ca = { 108 sizeof(struct le_softc), le_vme_match, le_vme_attach 109 }; 110 111 hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 112 hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t)); 113 114 hide void 115 lewrcsr(sc, port, val) 116 struct am7990_softc *sc; 117 u_int16_t port, val; 118 { 119 struct le_softc *lesc = (struct le_softc *)sc; 120 int s; 121 122 s = splhigh(); 123 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 124 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP, val); 125 splx(s); 126 } 127 128 hide u_int16_t 129 lerdcsr(sc, port) 130 struct am7990_softc *sc; 131 u_int16_t port; 132 { 133 struct le_softc *lesc = (struct le_softc *)sc; 134 u_int16_t val; 135 int s; 136 137 s = splhigh(); 138 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 139 val = bus_space_read_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP); 140 splx(s); 141 142 return (val); 143 } 144 145 static int 146 le_vme_match(parent, cfp, aux) 147 struct device *parent; 148 struct cfdata *cfp; 149 void *aux; 150 { 151 struct vme_attach_args *va = aux; 152 int i; 153 bus_space_tag_t iot; 154 bus_space_tag_t memt; 155 bus_space_handle_t ioh; 156 bus_space_handle_t memh; 157 158 iot = va->va_iot; 159 memt = va->va_memt; 160 161 for (i = 0; i < NLESTD; i++) { 162 struct le_addresses *le_ap = &lestd[i]; 163 int found = 0; 164 165 if ((va->va_iobase != IOBASEUNK) 166 && (va->va_iobase != le_ap->reg_addr)) 167 continue; 168 169 if ((va->va_maddr != MADDRUNK) 170 && (va->va_maddr != le_ap->mem_addr)) 171 continue; 172 173 if ((le_ap->irq != IRQUNK) && (va->va_irq != le_ap->irq)) 174 continue; 175 176 if (bus_space_map(iot, le_ap->reg_addr, 16, 0, &ioh)) { 177 printf("leprobe: cannot map io-area\n"); 178 return (0); 179 } 180 if (bus_space_map(memt, le_ap->mem_addr, MEMSIZE, 0, &memh)) { 181 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 182 printf("leprobe: cannot map memory-area\n"); 183 return (0); 184 } 185 found = probe_addresses(&iot, &memt, &ioh, &memh); 186 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 187 bus_space_unmap(memt, (caddr_t)le_ap->mem_addr, 8*NBPG); 188 189 if (found) { 190 va->va_iobase = le_ap->reg_addr; 191 va->va_iosize = 16; 192 va->va_maddr = le_ap->mem_addr; 193 va->va_msize = MEMSIZE; 194 if (va->va_irq == IRQUNK) 195 va->va_irq = le_ap->irq; 196 return 1; 197 } 198 } 199 return (0); 200 } 201 202 static int 203 probe_addresses(iot, memt, ioh, memh) 204 bus_space_tag_t *iot; 205 bus_space_tag_t *memt; 206 bus_space_handle_t *ioh; 207 bus_space_handle_t *memh; 208 { 209 /* 210 * Test accesibility of register and memory area 211 */ 212 if(!bus_space_peek_2(*iot, *ioh, LER_RDP)) 213 return 0; 214 if(!bus_space_peek_1(*memt, *memh, 0)) 215 return 0; 216 217 /* 218 * Test for writable memory 219 */ 220 bus_space_write_2(*memt, *memh, 0, 0xa5a5); 221 if (bus_space_read_2(*memt, *memh, 0) != 0xa5a5) 222 return 0; 223 224 /* 225 * Test writability of selector port. 226 */ 227 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR1); 228 if (bus_space_read_2(*iot, *ioh, LER_RAP) != LE_CSR1) 229 return 0; 230 231 /* 232 * Do a small register test 233 */ 234 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR0); 235 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_INIT | LE_C0_STOP); 236 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 237 return 0; 238 239 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_STOP); 240 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 241 return 0; 242 243 return 1; 244 } 245 246 /* 247 * Interrupt mess. Because the card's interrupt is hardwired to either 248 * ipl5 or ipl3 (mostly on ipl5) and raising splnet to spl5() just won't do 249 * (it kills the serial at the least), we use a 2-level interrupt sceme. The 250 * card interrupt is routed to 'le_intr'. If the previous ipl was below 251 * splnet, just call the mi-function. If not, save the interrupt status, 252 * turn off card interrupts (the card is *very* persistent) and arrange 253 * for a softint 'callback' through 'lepseudointr'. 254 */ 255 static int 256 le_intr(lesc, sr) 257 struct le_softc *lesc; 258 int sr; 259 { 260 struct am7990_softc *sc = &lesc->sc_am7990; 261 u_int16_t csr0; 262 263 if ((sr & PSL_IPL) < IPL_NET) 264 am7990_intr(sc); 265 else { 266 sc->sc_saved_csr0 = csr0 = lerdcsr(sc, LE_CSR0); 267 lewrcsr(sc, LE_CSR0, csr0 & ~LE_C0_INEA); 268 add_sicallback((si_farg)lepseudointr, lesc, sc); 269 } 270 return 1; 271 } 272 273 274 static void 275 lepseudointr(lesc, sc) 276 struct le_softc *lesc; 277 void *sc; 278 { 279 int s; 280 281 s = splx(lesc->sc_splval); 282 am7990_intr(sc); 283 splx(s); 284 } 285 286 static void 287 le_vme_attach(parent, self, aux) 288 struct device *parent, *self; 289 void *aux; 290 { 291 struct le_softc *lesc = (struct le_softc *)self; 292 struct am7990_softc *sc = &lesc->sc_am7990; 293 struct vme_attach_args *va = aux; 294 bus_space_handle_t ioh; 295 bus_space_handle_t memh; 296 int i; 297 298 printf("\n%s: ", sc->sc_dev.dv_xname); 299 300 if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) 301 panic("leattach: cannot map io-area\n"); 302 if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 0, &memh)) 303 panic("leattach: cannot map mem-area\n"); 304 305 lesc->sc_iot = va->va_iot; 306 lesc->sc_ioh = ioh; 307 lesc->sc_memt = va->va_memt; 308 lesc->sc_memh = memh; 309 lesc->sc_splval = (va->va_irq << 8) | PSL_S; /* XXX */ 310 311 /* 312 * Go on to find board type 313 */ 314 if (bus_space_peek_1(va->va_iot, ioh, LER_EEPROM)) { 315 printf("PAM card"); 316 lesc->sc_type = LE_PAM; 317 bus_space_read_1(va->va_iot, ioh, LER_MEME); 318 } 319 else { 320 printf("Riebl card"); 321 if(bus_space_read_4(va->va_memt, memh, RIEBL_MAGIC_ADDR) 322 == RIEBL_MAGIC) 323 lesc->sc_type = LE_NEW_RIEBL; 324 else { 325 printf("(without battery) "); 326 lesc->sc_type = LE_OLD_RIEBL; 327 } 328 } 329 330 sc->sc_copytodesc = am7990_copytobuf_contig; 331 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 332 sc->sc_copytobuf = am7990_copytobuf_contig; 333 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 334 sc->sc_zerobuf = am7990_zerobuf_contig; 335 336 sc->sc_rdcsr = lerdcsr; 337 sc->sc_wrcsr = lewrcsr; 338 sc->sc_hwinit = NULL; 339 sc->sc_conf3 = LE_C3_BSWP; 340 sc->sc_addr = 0; 341 sc->sc_memsize = va->va_msize; 342 sc->sc_mem = (void *)memh; /* XXX */ 343 344 /* 345 * Get MAC address 346 */ 347 switch (lesc->sc_type) { 348 case LE_OLD_RIEBL: 349 bcopy(riebl_def_mac, sc->sc_arpcom.ac_enaddr, 350 sizeof(sc->sc_arpcom.ac_enaddr)); 351 break; 352 case LE_NEW_RIEBL: 353 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) 354 sc->sc_arpcom.ac_enaddr[i] = 355 bus_space_read_1(va->va_memt, memh, i + RIEBL_MAC_ADDR); 356 break; 357 case LE_PAM: 358 i = bus_space_read_1(va->va_iot, ioh, LER_EEPROM); 359 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) { 360 sc->sc_arpcom.ac_enaddr[i] = 361 (bus_space_read_2(va->va_memt, memh, 2 * i) << 4) | 362 (bus_space_read_2(va->va_memt, memh, 2 * i + 1) & 0xf); 363 } 364 i = bus_space_read_1(va->va_iot, ioh, LER_MEME); 365 break; 366 } 367 368 am7990_config(sc); 369 370 if ((lesc->sc_type == LE_OLD_RIEBL) || (lesc->sc_type == LE_NEW_RIEBL)) 371 riebl_skip_reserved_area(sc); 372 373 /* 374 * XXX: We always use uservector 64.... 375 */ 376 if ((lesc->sc_intr = intr_establish(64, USER_VEC, 0, 377 (hw_ifun_t)le_intr, lesc)) == NULL) { 378 printf("le_vme_attach: Can't establish interrupt\n"); 379 return; 380 } 381 382 /* 383 * Notify the card of the vector 384 */ 385 switch (lesc->sc_type) { 386 case LE_OLD_RIEBL: 387 case LE_NEW_RIEBL: 388 bus_space_write_2(va->va_memt, memh, RIEBL_IVEC_ADDR, 389 64 + 64); 390 break; 391 case LE_PAM: 392 bus_space_write_1(va->va_iot, ioh, LER_IVEC, 64 + 64); 393 break; 394 } 395 396 /* 397 * Unmask the VME-interrupt we're on 398 */ 399 if (machineid & ATARI_TT) 400 SCU->vme_mask |= 1 << va->va_irq; 401 } 402 403 /* 404 * True if 'addr' containe within [start,len] 405 */ 406 #define WITHIN(start, len, addr) \ 407 ((addr >= start) && ((addr) <= ((start) + (len)))) 408 static void 409 riebl_skip_reserved_area(sc) 410 struct am7990_softc *sc; 411 { 412 int offset = 0; 413 int i; 414 415 for(i = 0; i < sc->sc_nrbuf; i++) { 416 if (WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_START) 417 || WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_END)) { 418 offset = RIEBL_RES_END - sc->sc_rbufaddr[i]; 419 } 420 sc->sc_rbufaddr[i] += offset; 421 } 422 423 for(i = 0; i < sc->sc_ntbuf; i++) { 424 if (WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_START) 425 || WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_END)) { 426 offset = RIEBL_RES_END - sc->sc_tbufaddr[i]; 427 } 428 sc->sc_tbufaddr[i] += offset; 429 } 430 } 431
Indexes created Wed Oct 01 13:09:50 GMT 2025