if_ate.c revision 1.48
1 /* $NetBSD: if_ate.c,v 1.48 2007/10/19 12:00:17 ad 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 1.48 2007/10/19 12:00:17 ad 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 <sys/bus.h> 48 #include <sys/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, 101 void *aux) 102 { 103 struct isa_attach_args *ia = aux; 104 bus_space_tag_t iot = ia->ia_iot; 105 bus_space_handle_t ioh; 106 int i, iobase, irq, rv = 0; 107 uint8_t myea[ETHER_ADDR_LEN]; 108 109 if (ia->ia_nio < 1) 110 return 0; 111 if (ia->ia_nirq < 1) 112 return 0; 113 114 if (ISA_DIRECT_CONFIG(ia)) 115 return 0; 116 117 /* Disallow wildcarded values. */ 118 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 119 return 0; 120 121 /* 122 * See if the sepcified address is valid for MB86965A JLI mode. 123 */ 124 for (i = 0; i < NATE_IOMAP; i++) 125 if (ate_iomap[i] == ia->ia_io[0].ir_addr) 126 break; 127 if (i == NATE_IOMAP) { 128 DPRINTF("ate_match: unknown iobase 0x%x\n", 129 ia->ia_io[0].ir_addr); 130 return 0; 131 } 132 133 /* Map i/o space. */ 134 if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) { 135 DPRINTF("ate_match: couldn't map iospace 0x%x\n", 136 ia->ia_io[0].ir_addr); 137 return 0; 138 } 139 140 if (ate_find(iot, ioh, &iobase, &irq) == 0) { 141 DPRINTF("ate_match: ate_find failed\n"); 142 goto out; 143 } 144 145 if (iobase != ia->ia_io[0].ir_addr) { 146 DPRINTF("ate_match: unexpected iobase in board: 0x%x\n", 147 iobase); 148 goto out; 149 } 150 151 if (ate_detect(iot, ioh, myea) == 0) { /* XXX necessary? */ 152 DPRINTF("ate_match: ate_detect failed\n"); 153 goto out; 154 } 155 156 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) { 157 if (ia->ia_irq[0].ir_irq != irq) { 158 printf("ate_match: irq mismatch; " 159 "kernel configured %d != board configured %d\n", 160 ia->ia_irq[0].ir_irq, irq); 161 goto out; 162 } 163 } else 164 ia->ia_irq[0].ir_irq = irq; 165 166 ia->ia_nio = 1; 167 ia->ia_io[0].ir_size = ATE_NPORTS; 168 169 ia->ia_nirq = 1; 170 171 ia->ia_niomem = 0; 172 ia->ia_ndrq = 0; 173 174 rv = 1; 175 176 out: 177 bus_space_unmap(iot, ioh, ATE_NPORTS); 178 return rv; 179 } 180 181 /* 182 * Check for specific bits in specific registers have specific values. 183 */ 184 static inline int 185 fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh, 186 struct fe_simple_probe_struct const *sp) 187 { 188 uint8_t val; 189 struct fe_simple_probe_struct const *p; 190 191 for (p = sp; p->mask != 0; p++) { 192 val = bus_space_read_1(iot, ioh, p->port); 193 if ((val & p->mask) != p->bits) { 194 DPRINTF("fe_simple_probe: %x & %x != %x\n", 195 val, p->mask, p->bits); 196 return 0; 197 } 198 } 199 200 return 1; 201 } 202 203 /* 204 * Hardware (vendor) specific probe routines. 205 */ 206 207 /* 208 * Probe and initialization for Allied-Telesis AT1700/RE2000 series. 209 */ 210 static int 211 ate_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq) 212 { 213 uint8_t eeprom[FE_EEPROM_SIZE]; 214 int n; 215 216 static int const irqmap[4][4] = { 217 { 3, 4, 5, 9 }, 218 { 10, 11, 12, 15 }, 219 { 3, 11, 5, 15 }, 220 { 10, 11, 14, 15 }, 221 }; 222 static struct fe_simple_probe_struct const probe_table[] = { 223 { FE_DLCR2, 0x70, 0x00 }, 224 { FE_DLCR4, 0x08, 0x00 }, 225 { FE_DLCR5, 0x80, 0x00 }, 226 #if 0 227 { FE_BMPR16, 0x1B, 0x00 }, 228 { FE_BMPR17, 0x7F, 0x00 }, 229 #endif 230 { 0, 0x00, 0x00 }, 231 }; 232 233 #if ATE_DEBUG >= 4 234 log(LOG_INFO, "ate_find: probe (0x%x) for ATE\n", iobase); 235 #if 0 236 fe_dump(LOG_INFO, sc); 237 #endif 238 #endif 239 240 /* 241 * We should test if MB86965A is on the base address now. 242 * Unfortunately, it is very hard to probe it reliably, since 243 * we have no way to reset the chip under software control. 244 * On cold boot, we could check the "signature" bit patterns 245 * described in the Fujitsu document. On warm boot, however, 246 * we can predict almost nothing about register values. 247 */ 248 if (!fe_simple_probe(iot, ioh, probe_table)) 249 return 0; 250 251 /* Check if our I/O address matches config info on 86965. */ 252 n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_ADDR) 253 >> FE_B19_ADDR_SHIFT; 254 *iobase = ate_iomap[n]; 255 256 /* 257 * We are now almost sure we have an AT1700 at the given 258 * address. So, read EEPROM through 86965. We have to write 259 * into LSI registers to read from EEPROM. I want to avoid it 260 * at this stage, but I cannot test the presence of the chip 261 * any further without reading EEPROM. FIXME. 262 */ 263 mb86965_read_eeprom(iot, ioh, eeprom); 264 265 /* Make sure that config info in EEPROM and 86965 agree. */ 266 if (eeprom[FE_EEPROM_CONF] != bus_space_read_1(iot, ioh, FE_BMPR19)) { 267 #ifdef DIAGNOSTIC 268 printf("ate_find: " 269 "incorrect configuration in eeprom and chip\n"); 270 #endif 271 return 0; 272 } 273 274 /* 275 * Try to determine IRQ settings. 276 * Different models use different ranges of IRQs. 277 */ 278 n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_IRQ) 279 >> FE_B19_IRQ_SHIFT; 280 switch (eeprom[FE_ATI_EEP_REVISION] & 0xf0) { 281 case 0x30: 282 *irq = irqmap[3][n]; 283 break; 284 case 0x10: 285 case 0x50: 286 *irq = irqmap[2][n]; 287 break; 288 case 0x40: 289 case 0x60: 290 if (eeprom[FE_ATI_EEP_MAGIC] & 0x04) { 291 *irq = irqmap[1][n]; 292 break; 293 } 294 default: 295 *irq = irqmap[0][n]; 296 break; 297 } 298 299 return 1; 300 } 301 302 /* 303 * Determine type and ethernet address. 304 */ 305 static int 306 ate_detect(bus_space_tag_t iot, bus_space_handle_t ioh, 307 uint8_t enaddr[ETHER_ADDR_LEN]) 308 { 309 uint8_t eeprom[FE_EEPROM_SIZE]; 310 int type; 311 312 /* Get our station address from EEPROM. */ 313 mb86965_read_eeprom(iot, ioh, eeprom); 314 memcpy(enaddr, eeprom + FE_ATI_EEP_ADDR, ETHER_ADDR_LEN); 315 316 /* Make sure we got a valid station address. */ 317 if ((enaddr[0] & 0x03) != 0x00 || 318 (enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) { 319 DPRINTF("ate_detect: invalid ethernet address\n"); 320 return 0; 321 } 322 323 /* 324 * Determine the card type. 325 */ 326 switch (eeprom[FE_ATI_EEP_MODEL]) { 327 case FE_ATI_MODEL_AT1700T: 328 type = FE_TYPE_AT1700T; 329 break; 330 case FE_ATI_MODEL_AT1700BT: 331 type = FE_TYPE_AT1700BT; 332 break; 333 case FE_ATI_MODEL_AT1700FT: 334 type = FE_TYPE_AT1700FT; 335 break; 336 case FE_ATI_MODEL_AT1700AT: 337 type = FE_TYPE_AT1700AT; 338 break; 339 default: 340 type = FE_TYPE_AT_UNKNOWN; 341 break; 342 } 343 344 return type; 345 } 346 347 void 348 ate_attach(struct device *parent, struct device *self, void *aux) 349 { 350 struct ate_softc *isc = (struct ate_softc *)self; 351 struct mb86960_softc *sc = &isc->sc_mb86960; 352 struct isa_attach_args *ia = aux; 353 bus_space_tag_t iot = ia->ia_iot; 354 bus_space_handle_t ioh; 355 uint8_t myea[ETHER_ADDR_LEN]; 356 const char *typestr; 357 int type; 358 359 /* Map i/o space. */ 360 if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) { 361 printf(": can't map i/o space\n"); 362 return; 363 } 364 365 sc->sc_bst = iot; 366 sc->sc_bsh = ioh; 367 368 /* Determine the card type and get ethernet address. */ 369 type = ate_detect(iot, ioh, myea); 370 switch (type) { 371 case FE_TYPE_AT1700T: 372 typestr = "AT-1700T/RE2001"; 373 break; 374 case FE_TYPE_AT1700BT: 375 typestr = "AT-1700BT/RE2003"; 376 break; 377 case FE_TYPE_AT1700FT: 378 typestr = "AT-1700FT/RE2009"; 379 break; 380 case FE_TYPE_AT1700AT: 381 typestr = "AT-1700AT/RE2005"; 382 break; 383 case FE_TYPE_AT_UNKNOWN: 384 typestr = "unknown AT-1700/RE2000"; 385 break; 386 387 default: 388 /* Unknown card type: maybe a new model, but... */ 389 printf(": where did the card go?!\n"); 390 panic("unknown card"); 391 } 392 393 printf(": %s Ethernet\n", typestr); 394 395 /* This interface is always enabled. */ 396 sc->sc_stat |= FE_STAT_ENABLED; 397 398 /* 399 * Do generic MB86960 attach. 400 */ 401 mb86960_attach(sc, myea); 402 403 mb86960_config(sc, NULL, 0, 0); 404 405 /* Establish the interrupt handler. */ 406 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 407 IST_EDGE, IPL_NET, mb86960_intr, sc); 408 if (isc->sc_ih == NULL) 409 printf("%s: couldn't establish interrupt handler\n", 410 sc->sc_dev.dv_xname); 411 } 412
Indexes created Tue Sep 23 02:09:52 GMT 2025