if_en_pci.c revision 46024
1/* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */ 2 3/* 4 * 5 * Copyright (c) 1996 Charles D. Cranor and Washington University. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor and 19 * Washington University. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35/* 36 * 37 * i f _ e n _ p c i . c 38 * 39 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 40 * started: spring, 1996. 41 * 42 * FreeBSD PCI glue for the eni155p card. 43 * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs. 44 */ 45 46#include "en.h" 47#include "pci.h" 48#if (NEN > 0) && (NPCI > 0) 49 50#include <sys/param.h> 51#include <sys/kernel.h> 52#include <sys/systm.h> 53#include <sys/malloc.h> 54#include <sys/socket.h> 55 56#include <machine/clock.h> /* for DELAY */ 57 58#include <net/if.h> 59 60#include <pci/pcivar.h> 61#include <pci/pcireg.h> 62 63#include <dev/en/midwayreg.h> 64#include <dev/en/midwayvar.h> 65 66 67/* 68 * prototypes 69 */ 70 71static void en_pci_attach __P((pcici_t, int)); 72static const char *en_pci_probe __P((pcici_t, pcidi_t)); 73static void en_pci_shutdown __P((int, void *)); 74 75/* 76 * local structures 77 */ 78 79struct en_pci_softc { 80 /* bus independent stuff */ 81 struct en_softc esc; /* includes "device" structure */ 82 83 /* PCI bus glue */ 84 void *sc_ih; /* interrupt handle */ 85 pci_chipset_tag_t en_pc; /* for PCI calls */ 86 pcici_t en_confid; /* config id */ 87}; 88 89#if !defined(MIDWAY_ENIONLY) 90static void eni_get_macaddr __P((struct en_pci_softc *)); 91#endif 92#if !defined(MIDWAY_ADPONLY) 93static void adp_get_macaddr __P((struct en_pci_softc *)); 94#endif 95 96/* 97 * pointers to softcs (we alloc) 98 */ 99 100static struct en_pci_softc *enpcis[NEN] = {0}; 101extern struct cfdriver en_cd; 102 103/* 104 * autoconfig structures 105 */ 106 107static u_long en_pci_count; 108 109static struct pci_device endevice = { 110 "en", 111 en_pci_probe, 112 en_pci_attach, 113 &en_pci_count, 114 NULL, 115}; 116 117#ifdef COMPAT_PCI_DRIVER 118COMPAT_PCI_DRIVER (en, endevice); 119#else 120DATA_SET (pcidevice_set, endevice); 121#endif /* COMPAT_PCI_DRIVER */ 122 123/* 124 * local defines (PCI specific stuff) 125 */ 126 127/* 128 * address of config base memory address register in PCI config space 129 * (this is card specific) 130 */ 131 132#define PCI_CBMA 0x10 133 134/* 135 * tonga (pci bridge). ENI cards only! 136 */ 137 138#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 139 140#define TONGA_SWAP_DMA 0x80 /* endian swap control */ 141#define TONGA_SWAP_BYTE 0x40 142#define TONGA_SWAP_WORD 0x20 143 144/* 145 * adaptec pci bridge. ADP cards only! 146 */ 147 148#define ADP_PCIREG 0x050040 /* PCI control register */ 149 150#define ADP_PCIREG_RESET 0x1 /* reset card */ 151#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 152#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 153#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 154 155#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 156#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 157#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 158#define PCI_VENDOR_ADP 0x9004 /* adaptec */ 159#define PCI_PRODUCT_ADP_AIC5900 0x5900 160#define PCI_PRODUCT_ADP_AIC5905 0x5905 161#define PCI_VENDOR(x) ((x) & 0xFFFF) 162#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 163 164#if !defined(MIDWAY_ENIONLY) 165 166static void adp_busreset __P((void *)); 167 168/* 169 * bus specific reset function [ADP only!] 170 */ 171 172static void adp_busreset(v) 173 174void *v; 175 176{ 177 struct en_softc *sc = (struct en_softc *) v; 178 u_int32_t dummy; 179 180 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); 181 DELAY(1000); /* let it reset */ 182 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 183 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 184 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); 185 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 186 if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != 187 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) 188 printf("adp_busreset: Adaptec ATM did NOT reset!\n"); 189} 190#endif 191 192/***********************************************************************/ 193 194/* 195 * autoconfig stuff 196 */ 197 198static const char *en_pci_probe(config_id, device_id) 199 200pcici_t config_id; 201pcidi_t device_id; 202 203{ 204#if !defined(MIDWAY_ADPONLY) 205 if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS && 206 (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || 207 PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) 208 return "Efficient Networks ENI-155p"; 209#endif 210 211#if !defined(MIDWAY_ENIONLY) 212 if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP && 213 (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 || 214 PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905)) 215 return "Adaptec 155 ATM"; 216#endif 217 218 return 0; 219} 220 221static void en_pci_attach(config_id, unit) 222 223pcici_t config_id; 224int unit; 225 226{ 227 struct en_softc *sc; 228 struct en_pci_softc *scp; 229 pcidi_t device_id; 230 int retval; 231 vm_offset_t pa; 232 233 if (unit >= NEN) { 234 printf("en%d: not configured; kernel is built for only %d device%s.\n", 235 unit, NEN, NEN == 1 ? "" : "s"); 236 return; 237 } 238 239 scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); 240 if (scp == NULL) 241 return; 242 bzero(scp, sizeof(*scp)); /* zero */ 243 sc = &scp->esc; 244 245 retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa); 246 247 if (!retval) { 248 free((caddr_t) scp, M_DEVBUF); 249 return; 250 } 251 enpcis[unit] = scp; /* lock it in */ 252 en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */ 253 en_cd.cd_ndevs = NEN; 254 snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "en%d", unit); 255 sc->enif.if_unit = unit; 256 sc->enif.if_name = "en"; 257 scp->en_confid = config_id; 258 259 /* 260 * figure out if we are an adaptec card or not. 261 * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already 262 * had that info? 263 */ 264 265 device_id = pci_conf_read(config_id, PCI_ID_REG); 266 sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0; 267 268 /* 269 * Add shutdown hook so that DMA is disabled prior to reboot. Not 270 * doing so could allow DMA to corrupt kernel memory during the 271 * reboot before the driver initializes. 272 */ 273 at_shutdown(en_pci_shutdown, scp, SHUTDOWN_POST_SYNC); 274 275 if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) { 276 printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); 277 return; 278 } 279 sc->ipl = 1; /* XXX */ 280 281 /* 282 * set up pci bridge 283 */ 284 285#if !defined(MIDWAY_ENIONLY) 286 if (sc->is_adaptec) { 287 adp_get_macaddr(scp); 288 sc->en_busreset = adp_busreset; 289 adp_busreset(sc); 290 } 291#endif 292 293#if !defined(MIDWAY_ADPONLY) 294 if (!sc->is_adaptec) { 295 eni_get_macaddr(scp); 296 sc->en_busreset = NULL; 297 pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); 298 } 299#endif 300 301 /* 302 * done PCI specific stuff 303 */ 304 305 en_attach(sc); 306 307} 308 309static void 310en_pci_shutdown( 311 int howto, 312 void *sc) 313{ 314 struct en_pci_softc *psc = (struct en_pci_softc *)sc; 315 316 en_reset(&psc->esc); 317 DELAY(10); 318} 319 320#if !defined(MIDWAY_ENIONLY) 321 322#if defined(sparc) || defined(__FreeBSD__) 323#define bus_space_read_1(t, h, o) \ 324 ((void)t, (*(volatile u_int8_t *)((h) + (o)))) 325#endif 326 327static void 328adp_get_macaddr(scp) 329 struct en_pci_softc *scp; 330{ 331 struct en_softc * sc = (struct en_softc *)scp; 332 int lcv; 333 334 for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) 335 sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, 336 MID_ADPMACOFF + lcv); 337} 338 339#endif /* MIDWAY_ENIONLY */ 340 341#if !defined(MIDWAY_ADPONLY) 342 343/* 344 * Read station (MAC) address from serial EEPROM. 345 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. 346 */ 347#define EN_PROM_MAGIC 0x0c 348#define EN_PROM_DATA 0x02 349#define EN_PROM_CLK 0x01 350#define EN_ESI 64 351 352static void 353eni_get_macaddr(scp) 354 struct en_pci_softc *scp; 355{ 356 struct en_softc * sc = (struct en_softc *)scp; 357 pcici_t id = scp->en_confid; 358 int i, j, address, status; 359 u_int32_t data, t_data; 360 u_int8_t tmp; 361 362 t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00; 363 364 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; 365 pci_conf_write(id, EN_TONGA, data); 366 367 for (i = 0; i < sizeof(sc->macaddr); i ++){ 368 /* start operation */ 369 data |= EN_PROM_DATA ; 370 pci_conf_write(id, EN_TONGA, data); 371 data |= EN_PROM_CLK ; 372 pci_conf_write(id, EN_TONGA, data); 373 data &= ~EN_PROM_DATA ; 374 pci_conf_write(id, EN_TONGA, data); 375 data &= ~EN_PROM_CLK ; 376 pci_conf_write(id, EN_TONGA, data); 377 /* send address with serial line */ 378 address = ((i + EN_ESI) << 1) + 1; 379 for ( j = 7 ; j >= 0 ; j --){ 380 data = (address >> j) & 1 ? data | EN_PROM_DATA : 381 data & ~EN_PROM_DATA; 382 pci_conf_write(id, EN_TONGA, data); 383 data |= EN_PROM_CLK ; 384 pci_conf_write(id, EN_TONGA, data); 385 data &= ~EN_PROM_CLK ; 386 pci_conf_write(id, EN_TONGA, data); 387 } 388 /* get ack */ 389 data |= EN_PROM_DATA ; 390 pci_conf_write(id, EN_TONGA, data); 391 data |= EN_PROM_CLK ; 392 pci_conf_write(id, EN_TONGA, data); 393 data = pci_conf_read(id, EN_TONGA); 394 status = data & EN_PROM_DATA; 395 data &= ~EN_PROM_CLK ; 396 pci_conf_write(id, EN_TONGA, data); 397 data |= EN_PROM_DATA ; 398 pci_conf_write(id, EN_TONGA, data); 399 400 tmp = 0; 401 402 for ( j = 7 ; j >= 0 ; j --){ 403 tmp <<= 1; 404 data |= EN_PROM_DATA ; 405 pci_conf_write(id, EN_TONGA, data); 406 data |= EN_PROM_CLK ; 407 pci_conf_write(id, EN_TONGA, data); 408 data = pci_conf_read(id, EN_TONGA); 409 if(data & EN_PROM_DATA) tmp |= 1; 410 data &= ~EN_PROM_CLK ; 411 pci_conf_write(id, EN_TONGA, data); 412 data |= EN_PROM_DATA ; 413 pci_conf_write(id, EN_TONGA, data); 414 } 415 /* get ack */ 416 data |= EN_PROM_DATA ; 417 pci_conf_write(id, EN_TONGA, data); 418 data |= EN_PROM_CLK ; 419 pci_conf_write(id, EN_TONGA, data); 420 data = pci_conf_read(id, EN_TONGA); 421 status = data & EN_PROM_DATA; 422 data &= ~EN_PROM_CLK ; 423 pci_conf_write(id, EN_TONGA, data); 424 data |= EN_PROM_DATA ; 425 pci_conf_write(id, EN_TONGA, data); 426 427 sc->macaddr[i] = tmp; 428 } 429 /* stop operation */ 430 data &= ~EN_PROM_DATA; 431 pci_conf_write(id, EN_TONGA, data); 432 data |= EN_PROM_CLK; 433 pci_conf_write(id, EN_TONGA, data); 434 data |= EN_PROM_DATA; 435 pci_conf_write(id, EN_TONGA, data); 436 pci_conf_write(id, EN_TONGA, t_data); 437} 438 439#endif /* !MIDWAY_ADPONLY */ 440 441#endif /* NEN > 0 && NPCI > 0 */ 442