if_le_vme.c revision 1.4
1 /* $NetBSD: if_le_vme.c,v 1.4 1997/03/17 13:29:05 leo Exp $ */ 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 #include <net/if_media.h> 54 #include <net/if_ether.h> 55 56 #ifdef INET 57 #include <netinet/in.h> 58 #include <netinet/if_inarp.h> 59 #endif 60 61 #include <machine/cpu.h> 62 #include <machine/bus.h> 63 #include <machine/iomap.h> 64 #include <machine/scu.h> 65 66 #include <atari/atari/device.h> 67 #include <atari/atari/intr.h> 68 69 #include <dev/ic/am7990reg.h> 70 #include <dev/ic/am7990var.h> 71 72 #include <atari/vme/vmevar.h> 73 #include <atari/vme/if_levar.h> 74 75 struct le_addresses { 76 u_long reg_addr; 77 u_long mem_addr; 78 int irq; 79 } lestd[] = { 80 { 0xfe00fff0, 0xfe010000, IRQUNK }, /* Riebl VME */ 81 { 0xffcffff0, 0xffcf0000, 5 }, /* PAM VME */ 82 { 0xfecffff0, 0xfecf0000, 5 } /* Rhotron VME */ 83 }; 84 85 #define NLESTD (sizeof(lestd) / sizeof(lestd[0])) 86 87 /* 88 * All cards have 64KB RAM. However.... On the Riebl cards the area 89 * between the offsets 0xee70-0xeec0 is used to store config data. 90 */ 91 #define MEMSIZE (64*1024) 92 93 /* 94 * Default mac for RIEBL cards without a (working) battery. The first 4 bytes 95 * are the manufacturer id. 96 */ 97 static u_char riebl_def_mac[] = { 98 0x00, 0x00, 0x36, 0x04, 0x00, 0x00 99 }; 100 101 static int le_intr __P((struct le_softc *, int)); 102 static void lepseudointr __P((struct le_softc *, void *)); 103 static int le_vme_match __P((struct device *, struct cfdata *, void *)); 104 static void le_vme_attach __P((struct device *, struct device *, void *)); 105 static int probe_addresses __P((bus_space_tag_t *, bus_space_tag_t *, 106 bus_space_handle_t *, bus_space_handle_t *)); 107 static void riebl_skip_reserved_area __P((struct am7990_softc *)); 108 109 struct cfattach le_vme_ca = { 110 sizeof(struct le_softc), le_vme_match, le_vme_attach 111 }; 112 113 hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 114 hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t)); 115 116 hide void 117 lewrcsr(sc, port, val) 118 struct am7990_softc *sc; 119 u_int16_t port, val; 120 { 121 struct le_softc *lesc = (struct le_softc *)sc; 122 int s; 123 124 s = splhigh(); 125 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 126 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP, val); 127 splx(s); 128 } 129 130 hide u_int16_t 131 lerdcsr(sc, port) 132 struct am7990_softc *sc; 133 u_int16_t port; 134 { 135 struct le_softc *lesc = (struct le_softc *)sc; 136 u_int16_t val; 137 int s; 138 139 s = splhigh(); 140 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 141 val = bus_space_read_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP); 142 splx(s); 143 144 return (val); 145 } 146 147 static int 148 le_vme_match(parent, cfp, aux) 149 struct device *parent; 150 struct cfdata *cfp; 151 void *aux; 152 { 153 struct vme_attach_args *va = aux; 154 int i; 155 bus_space_tag_t iot; 156 bus_space_tag_t memt; 157 bus_space_handle_t ioh; 158 bus_space_handle_t memh; 159 160 iot = va->va_iot; 161 memt = va->va_memt; 162 163 for (i = 0; i < NLESTD; i++) { 164 struct le_addresses *le_ap = &lestd[i]; 165 int found = 0; 166 167 if ((va->va_iobase != IOBASEUNK) 168 && (va->va_iobase != le_ap->reg_addr)) 169 continue; 170 171 if ((va->va_maddr != MADDRUNK) 172 && (va->va_maddr != le_ap->mem_addr)) 173 continue; 174 175 if ((le_ap->irq != IRQUNK) && (va->va_irq != le_ap->irq)) 176 continue; 177 178 if (bus_space_map(iot, le_ap->reg_addr, 16, 0, &ioh)) { 179 printf("leprobe: cannot map io-area\n"); 180 return (0); 181 } 182 if (bus_space_map(memt, le_ap->mem_addr, MEMSIZE, 0, &memh)) { 183 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 184 printf("leprobe: cannot map memory-area\n"); 185 return (0); 186 } 187 found = probe_addresses(&iot, &memt, &ioh, &memh); 188 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 189 bus_space_unmap(memt, (caddr_t)le_ap->mem_addr, 8*NBPG); 190 191 if (found) { 192 va->va_iobase = le_ap->reg_addr; 193 va->va_iosize = 16; 194 va->va_maddr = le_ap->mem_addr; 195 va->va_msize = MEMSIZE; 196 if (va->va_irq == IRQUNK) 197 va->va_irq = le_ap->irq; 198 return 1; 199 } 200 } 201 return (0); 202 } 203 204 static int 205 probe_addresses(iot, memt, ioh, memh) 206 bus_space_tag_t *iot; 207 bus_space_tag_t *memt; 208 bus_space_handle_t *ioh; 209 bus_space_handle_t *memh; 210 { 211 /* 212 * Test accesibility of register and memory area 213 */ 214 if(!bus_space_peek_2(*iot, *ioh, LER_RDP)) 215 return 0; 216 if(!bus_space_peek_1(*memt, *memh, 0)) 217 return 0; 218 219 /* 220 * Test for writable memory 221 */ 222 bus_space_write_2(*memt, *memh, 0, 0xa5a5); 223 if (bus_space_read_2(*memt, *memh, 0) != 0xa5a5) 224 return 0; 225 226 /* 227 * Test writability of selector port. 228 */ 229 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR1); 230 if (bus_space_read_2(*iot, *ioh, LER_RAP) != LE_CSR1) 231 return 0; 232 233 /* 234 * Do a small register test 235 */ 236 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR0); 237 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_INIT | LE_C0_STOP); 238 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 239 return 0; 240 241 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_STOP); 242 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 243 return 0; 244 245 return 1; 246 } 247 248 /* 249 * Interrupt mess. Because the card's interrupt is hardwired to either 250 * ipl5 or ipl3 (mostly on ipl5) and raising splnet to spl5() just won't do 251 * (it kills the serial at the least), we use a 2-level interrupt sceme. The 252 * card interrupt is routed to 'le_intr'. If the previous ipl was below 253 * splnet, just call the mi-function. If not, save the interrupt status, 254 * turn off card interrupts (the card is *very* persistent) and arrange 255 * for a softint 'callback' through 'lepseudointr'. 256 */ 257 static int 258 le_intr(lesc, sr) 259 struct le_softc *lesc; 260 int sr; 261 { 262 struct am7990_softc *sc = &lesc->sc_am7990; 263 u_int16_t csr0; 264 265 if ((sr & PSL_IPL) < IPL_NET) 266 am7990_intr(sc); 267 else { 268 sc->sc_saved_csr0 = csr0 = lerdcsr(sc, LE_CSR0); 269 lewrcsr(sc, LE_CSR0, csr0 & ~LE_C0_INEA); 270 add_sicallback((si_farg)lepseudointr, lesc, sc); 271 } 272 return 1; 273 } 274 275 276 static void 277 lepseudointr(lesc, sc) 278 struct le_softc *lesc; 279 void *sc; 280 { 281 int s; 282 283 s = splx(lesc->sc_splval); 284 am7990_intr(sc); 285 splx(s); 286 } 287 288 static void 289 le_vme_attach(parent, self, aux) 290 struct device *parent, *self; 291 void *aux; 292 { 293 struct le_softc *lesc = (struct le_softc *)self; 294 struct am7990_softc *sc = &lesc->sc_am7990; 295 struct vme_attach_args *va = aux; 296 bus_space_handle_t ioh; 297 bus_space_handle_t memh; 298 int i; 299 300 printf("\n%s: ", sc->sc_dev.dv_xname); 301 302 if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) 303 panic("leattach: cannot map io-area\n"); 304 if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 0, &memh)) 305 panic("leattach: cannot map mem-area\n"); 306 307 lesc->sc_iot = va->va_iot; 308 lesc->sc_ioh = ioh; 309 lesc->sc_memt = va->va_memt; 310 lesc->sc_memh = memh; 311 lesc->sc_splval = (va->va_irq << 8) | PSL_S; /* XXX */ 312 313 /* 314 * Go on to find board type 315 */ 316 if (bus_space_peek_1(va->va_iot, ioh, LER_EEPROM)) { 317 printf("PAM card"); 318 lesc->sc_type = LE_PAM; 319 bus_space_read_1(va->va_iot, ioh, LER_MEME); 320 } 321 else { 322 printf("Riebl card"); 323 if(bus_space_read_4(va->va_memt, memh, RIEBL_MAGIC_ADDR) 324 == RIEBL_MAGIC) 325 lesc->sc_type = LE_NEW_RIEBL; 326 else { 327 printf("(without battery) "); 328 lesc->sc_type = LE_OLD_RIEBL; 329 } 330 } 331 332 sc->sc_copytodesc = am7990_copytobuf_contig; 333 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 334 sc->sc_copytobuf = am7990_copytobuf_contig; 335 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 336 sc->sc_zerobuf = am7990_zerobuf_contig; 337 338 sc->sc_rdcsr = lerdcsr; 339 sc->sc_wrcsr = lewrcsr; 340 sc->sc_hwinit = NULL; 341 sc->sc_conf3 = LE_C3_BSWP; 342 sc->sc_addr = 0; 343 sc->sc_memsize = va->va_msize; 344 sc->sc_mem = (void *)memh; /* XXX */ 345 346 /* 347 * Get MAC address 348 */ 349 switch (lesc->sc_type) { 350 case LE_OLD_RIEBL: 351 bcopy(riebl_def_mac, sc->sc_enaddr, 352 sizeof(sc->sc_enaddr)); 353 break; 354 case LE_NEW_RIEBL: 355 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 356 sc->sc_enaddr[i] = 357 bus_space_read_1(va->va_memt, memh, i + RIEBL_MAC_ADDR); 358 break; 359 case LE_PAM: 360 i = bus_space_read_1(va->va_iot, ioh, LER_EEPROM); 361 for (i = 0; i < sizeof(sc->sc_enaddr); i++) { 362 sc->sc_enaddr[i] = 363 (bus_space_read_2(va->va_memt, memh, 2 * i) << 4) | 364 (bus_space_read_2(va->va_memt, memh, 2 * i + 1) & 0xf); 365 } 366 i = bus_space_read_1(va->va_iot, ioh, LER_MEME); 367 break; 368 } 369 370 am7990_config(sc); 371 372 if ((lesc->sc_type == LE_OLD_RIEBL) || (lesc->sc_type == LE_NEW_RIEBL)) 373 riebl_skip_reserved_area(sc); 374 375 /* 376 * XXX: We always use uservector 64.... 377 */ 378 if ((lesc->sc_intr = intr_establish(64, USER_VEC, 0, 379 (hw_ifun_t)le_intr, lesc)) == NULL) { 380 printf("le_vme_attach: Can't establish interrupt\n"); 381 return; 382 } 383 384 /* 385 * Notify the card of the vector 386 */ 387 switch (lesc->sc_type) { 388 case LE_OLD_RIEBL: 389 case LE_NEW_RIEBL: 390 bus_space_write_2(va->va_memt, memh, RIEBL_IVEC_ADDR, 391 64 + 64); 392 break; 393 case LE_PAM: 394 bus_space_write_1(va->va_iot, ioh, LER_IVEC, 64 + 64); 395 break; 396 } 397 398 /* 399 * Unmask the VME-interrupt we're on 400 */ 401 if (machineid & ATARI_TT) 402 SCU->vme_mask |= 1 << va->va_irq; 403 } 404 405 /* 406 * True if 'addr' containe within [start,len] 407 */ 408 #define WITHIN(start, len, addr) \ 409 ((addr >= start) && ((addr) <= ((start) + (len)))) 410 static void 411 riebl_skip_reserved_area(sc) 412 struct am7990_softc *sc; 413 { 414 int offset = 0; 415 int i; 416 417 for(i = 0; i < sc->sc_nrbuf; i++) { 418 if (WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_START) 419 || WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_END)) { 420 offset = RIEBL_RES_END - sc->sc_rbufaddr[i]; 421 } 422 sc->sc_rbufaddr[i] += offset; 423 } 424 425 for(i = 0; i < sc->sc_ntbuf; i++) { 426 if (WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_START) 427 || WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_END)) { 428 offset = RIEBL_RES_END - sc->sc_tbufaddr[i]; 429 } 430 sc->sc_tbufaddr[i] += offset; 431 } 432 } 433
Indexes created Tue Sep 30 20:09:53 GMT 2025