if_ate.c revision 1.45
1 /* $NetBSD: if_ate.c,v 1.45 2006/08/30 15:46:58 christos Exp $ */ 2 3 /* 4 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 5 * 6 * This software may be used, modified, copied, distributed, and sold, in 7 * both source and binary form provided that the above copyright, these 8 * terms and the following disclaimer are retained. The name of the author 9 * and/or the contributor may not be used to endorse or promote products 10 * derived from this software without specific prior written permission. 11 * 12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND 13 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE 16 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. 19 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22 * SUCH DAMAGE. 23 */ 24 25 /* 26 * Portions copyright (C) 1993, David Greenman. This software may be used, 27 * modified, copied, distributed, and sold, in both source and binary form 28 * provided that the above copyright and these terms are retained. Under no 29 * circumstances is the author responsible for the proper functioning of this 30 * software, nor does the author assume any responsibility for damages 31 * incurred with its use. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: if_ate.c,v 1.45 2006/08/30 15:46:58 christos Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/socket.h> 41 #include <sys/syslog.h> 42 43 #include <net/if.h> 44 #include <net/if_ether.h> 45 #include <net/if_media.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/ic/mb86960reg.h> 51 #include <dev/ic/mb86960var.h> 52 53 #include <dev/isa/isavar.h> 54 55 int ate_match(struct device *, struct cfdata *, void *); 56 void ate_attach(struct device *, struct device *, void *); 57 58 struct ate_softc { 59 struct mb86960_softc sc_mb86960; /* real "mb86960" softc */ 60 61 /* ISA-specific goo. */ 62 void *sc_ih; /* interrupt cookie */ 63 }; 64 65 CFATTACH_DECL(ate_isa, sizeof(struct ate_softc), 66 ate_match, ate_attach, NULL, NULL); 67 68 struct fe_simple_probe_struct { 69 uint8_t port; /* Offset from the base I/O address. */ 70 uint8_t mask; /* Bits to be checked. */ 71 uint8_t bits; /* Values to be compared against. */ 72 }; 73 74 static inline int fe_simple_probe(bus_space_tag_t, bus_space_handle_t, 75 struct fe_simple_probe_struct const *); 76 static int ate_find(bus_space_tag_t, bus_space_handle_t, int *, int *); 77 static int ate_detect(bus_space_tag_t, bus_space_handle_t, 78 uint8_t enaddr[ETHER_ADDR_LEN]); 79 80 static int const ate_iomap[8] = { 81 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300 82 }; 83 #define NATE_IOMAP (sizeof (ate_iomap) / sizeof (ate_iomap[0])) 84 #define ATE_NPORTS 0x20 85 86 #ifdef ATE_DEBUG 87 #define DPRINTF printf 88 #else 89 #define DPRINTF while (/*CONSTCOND*/0) printf 90 #endif 91 92 /* 93 * Hardware probe routines. 94 */ 95 96 /* 97 * Determine if the device is present. 98 */ 99 int 100 ate_match(struct device *parent, struct cfdata *match, void *aux) 101 { 102 struct isa_attach_args *ia = aux; 103 bus_space_tag_t iot = ia->ia_iot; 104 bus_space_handle_t ioh; 105 int i, iobase, irq, rv = 0; 106 uint8_t myea[ETHER_ADDR_LEN]; 107 108 if (ia->ia_nio < 1) 109 return 0; 110 if (ia->ia_nirq < 1) 111 return 0; 112 113 if (ISA_DIRECT_CONFIG(ia)) 114 return 0; 115 116 /* Disallow wildcarded values. */ 117 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 118 return 0; 119 120 /* 121 * See if the sepcified address is valid for MB86965A JLI mode. 122 */ 123 for (i = 0; i < NATE_IOMAP; i++) 124 if (ate_iomap[i] == ia->ia_io[0].ir_addr) 125 break; 126 if (i == NATE_IOMAP) { 127 DPRINTF("ate_match: unknown iobase 0x%x\n", 128 ia->ia_io[0].ir_addr); 129 return 0; 130 } 131 132 /* Map i/o space. */ 133 if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) { 134 DPRINTF("ate_match: couldn't map iospace 0x%x\n", 135 ia->ia_io[0].ir_addr); 136 return 0; 137 } 138 139 if (ate_find(iot, ioh, &iobase, &irq) == 0) { 140 DPRINTF("ate_match: ate_find failed\n"); 141 goto out; 142 } 143 144 if (iobase != ia->ia_io[0].ir_addr) { 145 DPRINTF("ate_match: unexpected iobase in board: 0x%x\n", 146 iobase); 147 goto out; 148 } 149 150 if (ate_detect(iot, ioh, myea) == 0) { /* XXX necessary? */ 151 DPRINTF("ate_match: ate_detect failed\n"); 152 goto out; 153 } 154 155 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) { 156 if (ia->ia_irq[0].ir_irq != irq) { 157 printf("ate_match: irq mismatch; " 158 "kernel configured %d != board configured %d\n", 159 ia->ia_irq[0].ir_irq, irq); 160 goto out; 161 } 162 } else 163 ia->ia_irq[0].ir_irq = irq; 164 165 ia->ia_nio = 1; 166 ia->ia_io[0].ir_size = ATE_NPORTS; 167 168 ia->ia_nirq = 1; 169 170 ia->ia_niomem = 0; 171 ia->ia_ndrq = 0; 172 173 rv = 1; 174 175 out: 176 bus_space_unmap(iot, ioh, ATE_NPORTS); 177 return rv; 178 } 179 180 /* 181 * Check for specific bits in specific registers have specific values. 182 */ 183 static inline int 184 fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh, 185 struct fe_simple_probe_struct const *sp) 186 { 187 uint8_t val; 188 struct fe_simple_probe_struct const *p; 189 190 for (p = sp; p->mask != 0; p++) { 191 val = bus_space_read_1(iot, ioh, p->port); 192 if ((val & p->mask) != p->bits) { 193 DPRINTF("fe_simple_probe: %x & %x != %x\n", 194 val, p->mask, p->bits); 195 return 0; 196 } 197 } 198 199 return 1; 200 } 201 202 /* 203 * Hardware (vendor) specific probe routines. 204 */ 205 206 /* 207 * Probe and initialization for Allied-Telesis AT1700/RE2000 series. 208 */ 209 static int 210 ate_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq) 211 { 212 uint8_t eeprom[FE_EEPROM_SIZE]; 213 int n; 214 215 static int const irqmap[4][4] = { 216 { 3, 4, 5, 9 }, 217 { 10, 11, 12, 15 }, 218 { 3, 11, 5, 15 }, 219 { 10, 11, 14, 15 }, 220 }; 221 static struct fe_simple_probe_struct const probe_table[] = { 222 { FE_DLCR2, 0x70, 0x00 }, 223 { FE_DLCR4, 0x08, 0x00 }, 224 { FE_DLCR5, 0x80, 0x00 }, 225 #if 0 226 { FE_BMPR16, 0x1B, 0x00 }, 227 { FE_BMPR17, 0x7F, 0x00 }, 228 #endif 229 { 0, 0x00, 0x00 }, 230 }; 231 232 #if ATE_DEBUG >= 4 233 log(LOG_INFO, "ate_find: probe (0x%x) for ATE\n", iobase); 234 #if 0 235 fe_dump(LOG_INFO, sc); 236 #endif 237 #endif 238 239 /* 240 * We should test if MB86965A is on the base address now. 241 * Unfortunately, it is very hard to probe it reliably, since 242 * we have no way to reset the chip under software control. 243 * On cold boot, we could check the "signature" bit patterns 244 * described in the Fujitsu document. On warm boot, however, 245 * we can predict almost nothing about register values. 246 */ 247 if (!fe_simple_probe(iot, ioh, probe_table)) 248 return 0; 249 250 /* Check if our I/O address matches config info on 86965. */ 251 n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_ADDR) 252 >> FE_B19_ADDR_SHIFT; 253 *iobase = ate_iomap[n]; 254 255 /* 256 * We are now almost sure we have an AT1700 at the given 257 * address. So, read EEPROM through 86965. We have to write 258 * into LSI registers to read from EEPROM. I want to avoid it 259 * at this stage, but I cannot test the presence of the chip 260 * any further without reading EEPROM. FIXME. 261 */ 262 mb86965_read_eeprom(iot, ioh, eeprom); 263 264 /* Make sure that config info in EEPROM and 86965 agree. */ 265 if (eeprom[FE_EEPROM_CONF] != bus_space_read_1(iot, ioh, FE_BMPR19)) { 266 #ifdef DIAGNOSTIC 267 printf("ate_find: " 268 "incorrect configuration in eeprom and chip\n"); 269 #endif 270 return 0; 271 } 272 273 /* 274 * Try to determine IRQ settings. 275 * Different models use different ranges of IRQs. 276 */ 277 n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_IRQ) 278 >> FE_B19_IRQ_SHIFT; 279 switch (eeprom[FE_ATI_EEP_REVISION] & 0xf0) { 280 case 0x30: 281 *irq = irqmap[3][n]; 282 break; 283 case 0x10: 284 case 0x50: 285 *irq = irqmap[2][n]; 286 break; 287 case 0x40: 288 case 0x60: 289 if (eeprom[FE_ATI_EEP_MAGIC] & 0x04) { 290 *irq = irqmap[1][n]; 291 break; 292 } 293 default: 294 *irq = irqmap[0][n]; 295 break; 296 } 297 298 return 1; 299 } 300 301 /* 302 * Determine type and ethernet address. 303 */ 304 static int 305 ate_detect(bus_space_tag_t iot, bus_space_handle_t ioh, 306 uint8_t enaddr[ETHER_ADDR_LEN]) 307 { 308 uint8_t eeprom[FE_EEPROM_SIZE]; 309 int type; 310 311 /* Get our station address from EEPROM. */ 312 mb86965_read_eeprom(iot, ioh, eeprom); 313 memcpy(enaddr, eeprom + FE_ATI_EEP_ADDR, ETHER_ADDR_LEN); 314 315 /* Make sure we got a valid station address. */ 316 if ((enaddr[0] & 0x03) != 0x00 || 317 (enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) { 318 DPRINTF("ate_detect: invalid ethernet address\n"); 319 return 0; 320 } 321 322 /* 323 * Determine the card type. 324 */ 325 switch (eeprom[FE_ATI_EEP_MODEL]) { 326 case FE_ATI_MODEL_AT1700T: 327 type = FE_TYPE_AT1700T; 328 break; 329 case FE_ATI_MODEL_AT1700BT: 330 type = FE_TYPE_AT1700BT; 331 break; 332 case FE_ATI_MODEL_AT1700FT: 333 type = FE_TYPE_AT1700FT; 334 break; 335 case FE_ATI_MODEL_AT1700AT: 336 type = FE_TYPE_AT1700AT; 337 break; 338 default: 339 type = FE_TYPE_AT_UNKNOWN; 340 break; 341 } 342 343 return type; 344 } 345 346 void 347 ate_attach(struct device *parent, struct device *self, void *aux) 348 { 349 struct ate_softc *isc = (struct ate_softc *)self; 350 struct mb86960_softc *sc = &isc->sc_mb86960; 351 struct isa_attach_args *ia = aux; 352 bus_space_tag_t iot = ia->ia_iot; 353 bus_space_handle_t ioh; 354 uint8_t myea[ETHER_ADDR_LEN]; 355 const char *typestr; 356 int type; 357 358 /* Map i/o space. */ 359 if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) { 360 printf(": can't map i/o space\n"); 361 return; 362 } 363 364 sc->sc_bst = iot; 365 sc->sc_bsh = ioh; 366 367 /* Determine the card type and get ethernet address. */ 368 type = ate_detect(iot, ioh, myea); 369 switch (type) { 370 case FE_TYPE_AT1700T: 371 typestr = "AT-1700T/RE2001"; 372 break; 373 case FE_TYPE_AT1700BT: 374 typestr = "AT-1700BT/RE2003"; 375 break; 376 case FE_TYPE_AT1700FT: 377 typestr = "AT-1700FT/RE2009"; 378 break; 379 case FE_TYPE_AT1700AT: 380 typestr = "AT-1700AT/RE2005"; 381 break; 382 case FE_TYPE_AT_UNKNOWN: 383 typestr = "unknown AT-1700/RE2000"; 384 break; 385 386 default: 387 /* Unknown card type: maybe a new model, but... */ 388 printf(": where did the card go?!\n"); 389 panic("unknown card"); 390 } 391 392 printf(": %s Ethernet\n", typestr); 393 394 /* This interface is always enabled. */ 395 sc->sc_stat |= FE_STAT_ENABLED; 396 397 /* 398 * Do generic MB86960 attach. 399 */ 400 mb86960_attach(sc, myea); 401 402 mb86960_config(sc, NULL, 0, 0); 403 404 /* Establish the interrupt handler. */ 405 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 406 IST_EDGE, IPL_NET, mb86960_intr, sc); 407 if (isc->sc_ih == NULL) 408 printf("%s: couldn't establish interrupt handler\n", 409 sc->sc_dev.dv_xname); 410 } 411
Indexes created Tue Sep 23 14:10:03 GMT 2025