if_le_vme.c revision 1.5
1 /* $NetBSD: if_le_vme.c,v 1.5 1998/07/05 00:51:08 jonathan 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 "opt_inet.h" 44 #include "bpfilter.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/mbuf.h> 49 #include <sys/syslog.h> 50 #include <sys/socket.h> 51 #include <sys/device.h> 52 53 #include <net/if.h> 54 #include <net/if_media.h> 55 #include <net/if_ether.h> 56 57 #ifdef INET 58 #include <netinet/in.h> 59 #include <netinet/if_inarp.h> 60 #endif 61 62 #include <machine/cpu.h> 63 #include <machine/bus.h> 64 #include <machine/iomap.h> 65 #include <machine/scu.h> 66 67 #include <atari/atari/device.h> 68 #include <atari/atari/intr.h> 69 70 #include <dev/ic/am7990reg.h> 71 #include <dev/ic/am7990var.h> 72 73 #include <atari/vme/vmevar.h> 74 #include <atari/vme/if_levar.h> 75 76 struct le_addresses { 77 u_long reg_addr; 78 u_long mem_addr; 79 int irq; 80 } lestd[] = { 81 { 0xfe00fff0, 0xfe010000, IRQUNK }, /* Riebl VME */ 82 { 0xffcffff0, 0xffcf0000, 5 }, /* PAM VME */ 83 { 0xfecffff0, 0xfecf0000, 5 } /* Rhotron VME */ 84 }; 85 86 #define NLESTD (sizeof(lestd) / sizeof(lestd[0])) 87 88 /* 89 * All cards have 64KB RAM. However.... On the Riebl cards the area 90 * between the offsets 0xee70-0xeec0 is used to store config data. 91 */ 92 #define MEMSIZE (64*1024) 93 94 /* 95 * Default mac for RIEBL cards without a (working) battery. The first 4 bytes 96 * are the manufacturer id. 97 */ 98 static u_char riebl_def_mac[] = { 99 0x00, 0x00, 0x36, 0x04, 0x00, 0x00 100 }; 101 102 static int le_intr __P((struct le_softc *, int)); 103 static void lepseudointr __P((struct le_softc *, void *)); 104 static int le_vme_match __P((struct device *, struct cfdata *, void *)); 105 static void le_vme_attach __P((struct device *, struct device *, void *)); 106 static int probe_addresses __P((bus_space_tag_t *, bus_space_tag_t *, 107 bus_space_handle_t *, bus_space_handle_t *)); 108 static void riebl_skip_reserved_area __P((struct am7990_softc *)); 109 110 struct cfattach le_vme_ca = { 111 sizeof(struct le_softc), le_vme_match, le_vme_attach 112 }; 113 114 hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 115 hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t)); 116 117 hide void 118 lewrcsr(sc, port, val) 119 struct am7990_softc *sc; 120 u_int16_t port, val; 121 { 122 struct le_softc *lesc = (struct le_softc *)sc; 123 int s; 124 125 s = splhigh(); 126 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 127 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP, val); 128 splx(s); 129 } 130 131 hide u_int16_t 132 lerdcsr(sc, port) 133 struct am7990_softc *sc; 134 u_int16_t port; 135 { 136 struct le_softc *lesc = (struct le_softc *)sc; 137 u_int16_t val; 138 int s; 139 140 s = splhigh(); 141 bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); 142 val = bus_space_read_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP); 143 splx(s); 144 145 return (val); 146 } 147 148 static int 149 le_vme_match(parent, cfp, aux) 150 struct device *parent; 151 struct cfdata *cfp; 152 void *aux; 153 { 154 struct vme_attach_args *va = aux; 155 int i; 156 bus_space_tag_t iot; 157 bus_space_tag_t memt; 158 bus_space_handle_t ioh; 159 bus_space_handle_t memh; 160 161 iot = va->va_iot; 162 memt = va->va_memt; 163 164 for (i = 0; i < NLESTD; i++) { 165 struct le_addresses *le_ap = &lestd[i]; 166 int found = 0; 167 168 if ((va->va_iobase != IOBASEUNK) 169 && (va->va_iobase != le_ap->reg_addr)) 170 continue; 171 172 if ((va->va_maddr != MADDRUNK) 173 && (va->va_maddr != le_ap->mem_addr)) 174 continue; 175 176 if ((le_ap->irq != IRQUNK) && (va->va_irq != le_ap->irq)) 177 continue; 178 179 if (bus_space_map(iot, le_ap->reg_addr, 16, 0, &ioh)) { 180 printf("leprobe: cannot map io-area\n"); 181 return (0); 182 } 183 if (bus_space_map(memt, le_ap->mem_addr, MEMSIZE, 0, &memh)) { 184 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 185 printf("leprobe: cannot map memory-area\n"); 186 return (0); 187 } 188 found = probe_addresses(&iot, &memt, &ioh, &memh); 189 bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); 190 bus_space_unmap(memt, (caddr_t)le_ap->mem_addr, 8*NBPG); 191 192 if (found) { 193 va->va_iobase = le_ap->reg_addr; 194 va->va_iosize = 16; 195 va->va_maddr = le_ap->mem_addr; 196 va->va_msize = MEMSIZE; 197 if (va->va_irq == IRQUNK) 198 va->va_irq = le_ap->irq; 199 return 1; 200 } 201 } 202 return (0); 203 } 204 205 static int 206 probe_addresses(iot, memt, ioh, memh) 207 bus_space_tag_t *iot; 208 bus_space_tag_t *memt; 209 bus_space_handle_t *ioh; 210 bus_space_handle_t *memh; 211 { 212 /* 213 * Test accesibility of register and memory area 214 */ 215 if(!bus_space_peek_2(*iot, *ioh, LER_RDP)) 216 return 0; 217 if(!bus_space_peek_1(*memt, *memh, 0)) 218 return 0; 219 220 /* 221 * Test for writable memory 222 */ 223 bus_space_write_2(*memt, *memh, 0, 0xa5a5); 224 if (bus_space_read_2(*memt, *memh, 0) != 0xa5a5) 225 return 0; 226 227 /* 228 * Test writability of selector port. 229 */ 230 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR1); 231 if (bus_space_read_2(*iot, *ioh, LER_RAP) != LE_CSR1) 232 return 0; 233 234 /* 235 * Do a small register test 236 */ 237 bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR0); 238 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_INIT | LE_C0_STOP); 239 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 240 return 0; 241 242 bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_STOP); 243 if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) 244 return 0; 245 246 return 1; 247 } 248 249 /* 250 * Interrupt mess. Because the card's interrupt is hardwired to either 251 * ipl5 or ipl3 (mostly on ipl5) and raising splnet to spl5() just won't do 252 * (it kills the serial at the least), we use a 2-level interrupt sceme. The 253 * card interrupt is routed to 'le_intr'. If the previous ipl was below 254 * splnet, just call the mi-function. If not, save the interrupt status, 255 * turn off card interrupts (the card is *very* persistent) and arrange 256 * for a softint 'callback' through 'lepseudointr'. 257 */ 258 static int 259 le_intr(lesc, sr) 260 struct le_softc *lesc; 261 int sr; 262 { 263 struct am7990_softc *sc = &lesc->sc_am7990; 264 u_int16_t csr0; 265 266 if ((sr & PSL_IPL) < IPL_NET) 267 am7990_intr(sc); 268 else { 269 sc->sc_saved_csr0 = csr0 = lerdcsr(sc, LE_CSR0); 270 lewrcsr(sc, LE_CSR0, csr0 & ~LE_C0_INEA); 271 add_sicallback((si_farg)lepseudointr, lesc, sc); 272 } 273 return 1; 274 } 275 276 277 static void 278 lepseudointr(lesc, sc) 279 struct le_softc *lesc; 280 void *sc; 281 { 282 int s; 283 284 s = splx(lesc->sc_splval); 285 am7990_intr(sc); 286 splx(s); 287 } 288 289 static void 290 le_vme_attach(parent, self, aux) 291 struct device *parent, *self; 292 void *aux; 293 { 294 struct le_softc *lesc = (struct le_softc *)self; 295 struct am7990_softc *sc = &lesc->sc_am7990; 296 struct vme_attach_args *va = aux; 297 bus_space_handle_t ioh; 298 bus_space_handle_t memh; 299 int i; 300 301 printf("\n%s: ", sc->sc_dev.dv_xname); 302 303 if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) 304 panic("leattach: cannot map io-area\n"); 305 if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 0, &memh)) 306 panic("leattach: cannot map mem-area\n"); 307 308 lesc->sc_iot = va->va_iot; 309 lesc->sc_ioh = ioh; 310 lesc->sc_memt = va->va_memt; 311 lesc->sc_memh = memh; 312 lesc->sc_splval = (va->va_irq << 8) | PSL_S; /* XXX */ 313 314 /* 315 * Go on to find board type 316 */ 317 if (bus_space_peek_1(va->va_iot, ioh, LER_EEPROM)) { 318 printf("PAM card"); 319 lesc->sc_type = LE_PAM; 320 bus_space_read_1(va->va_iot, ioh, LER_MEME); 321 } 322 else { 323 printf("Riebl card"); 324 if(bus_space_read_4(va->va_memt, memh, RIEBL_MAGIC_ADDR) 325 == RIEBL_MAGIC) 326 lesc->sc_type = LE_NEW_RIEBL; 327 else { 328 printf("(without battery) "); 329 lesc->sc_type = LE_OLD_RIEBL; 330 } 331 } 332 333 sc->sc_copytodesc = am7990_copytobuf_contig; 334 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 335 sc->sc_copytobuf = am7990_copytobuf_contig; 336 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 337 sc->sc_zerobuf = am7990_zerobuf_contig; 338 339 sc->sc_rdcsr = lerdcsr; 340 sc->sc_wrcsr = lewrcsr; 341 sc->sc_hwinit = NULL; 342 sc->sc_conf3 = LE_C3_BSWP; 343 sc->sc_addr = 0; 344 sc->sc_memsize = va->va_msize; 345 sc->sc_mem = (void *)memh; /* XXX */ 346 347 /* 348 * Get MAC address 349 */ 350 switch (lesc->sc_type) { 351 case LE_OLD_RIEBL: 352 bcopy(riebl_def_mac, sc->sc_enaddr, 353 sizeof(sc->sc_enaddr)); 354 break; 355 case LE_NEW_RIEBL: 356 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 357 sc->sc_enaddr[i] = 358 bus_space_read_1(va->va_memt, memh, i + RIEBL_MAC_ADDR); 359 break; 360 case LE_PAM: 361 i = bus_space_read_1(va->va_iot, ioh, LER_EEPROM); 362 for (i = 0; i < sizeof(sc->sc_enaddr); i++) { 363 sc->sc_enaddr[i] = 364 (bus_space_read_2(va->va_memt, memh, 2 * i) << 4) | 365 (bus_space_read_2(va->va_memt, memh, 2 * i + 1) & 0xf); 366 } 367 i = bus_space_read_1(va->va_iot, ioh, LER_MEME); 368 break; 369 } 370 371 am7990_config(sc); 372 373 if ((lesc->sc_type == LE_OLD_RIEBL) || (lesc->sc_type == LE_NEW_RIEBL)) 374 riebl_skip_reserved_area(sc); 375 376 /* 377 * XXX: We always use uservector 64.... 378 */ 379 if ((lesc->sc_intr = intr_establish(64, USER_VEC, 0, 380 (hw_ifun_t)le_intr, lesc)) == NULL) { 381 printf("le_vme_attach: Can't establish interrupt\n"); 382 return; 383 } 384 385 /* 386 * Notify the card of the vector 387 */ 388 switch (lesc->sc_type) { 389 case LE_OLD_RIEBL: 390 case LE_NEW_RIEBL: 391 bus_space_write_2(va->va_memt, memh, RIEBL_IVEC_ADDR, 392 64 + 64); 393 break; 394 case LE_PAM: 395 bus_space_write_1(va->va_iot, ioh, LER_IVEC, 64 + 64); 396 break; 397 } 398 399 /* 400 * Unmask the VME-interrupt we're on 401 */ 402 if (machineid & ATARI_TT) 403 SCU->vme_mask |= 1 << va->va_irq; 404 } 405 406 /* 407 * True if 'addr' containe within [start,len] 408 */ 409 #define WITHIN(start, len, addr) \ 410 ((addr >= start) && ((addr) <= ((start) + (len)))) 411 static void 412 riebl_skip_reserved_area(sc) 413 struct am7990_softc *sc; 414 { 415 int offset = 0; 416 int i; 417 418 for(i = 0; i < sc->sc_nrbuf; i++) { 419 if (WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_START) 420 || WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_END)) { 421 offset = RIEBL_RES_END - sc->sc_rbufaddr[i]; 422 } 423 sc->sc_rbufaddr[i] += offset; 424 } 425 426 for(i = 0; i < sc->sc_ntbuf; i++) { 427 if (WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_START) 428 || WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_END)) { 429 offset = RIEBL_RES_END - sc->sc_tbufaddr[i]; 430 } 431 sc->sc_tbufaddr[i] += offset; 432 } 433 } 434
Indexes created Tue Sep 30 20:09:53 GMT 2025