if_en_pci.c revision 58695
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 * $FreeBSD: head/sys/dev/en/if_en_pci.c 58695 2000-03-27 18:32:45Z imp $ 35 */ 36 37/* 38 * 39 * i f _ e n _ p c i . c 40 * 41 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 42 * started: spring, 1996. 43 * 44 * FreeBSD PCI glue for the eni155p card. 45 * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs. 46 */ 47 48#ifndef COMPAT_OLDPCI 49#error "The en device requires the old pci compatibility shims" 50#endif 51 52#include "en.h" 53 54#include <sys/param.h> 55#include <sys/kernel.h> 56#include <sys/systm.h> 57#if defined(__FreeBSD__) 58#include <sys/eventhandler.h> 59#endif 60#include <sys/malloc.h> 61#include <sys/socket.h> 62 63#include <machine/clock.h> /* for DELAY */ 64 65#include <net/if.h> 66 67#include <pci/pcivar.h> 68#include <pci/pcireg.h> 69 70#include <dev/en/midwayreg.h> 71#include <dev/en/midwayvar.h> 72 73 74/* 75 * prototypes 76 */ 77 78static void en_pci_attach __P((pcici_t, int)); 79static const char *en_pci_probe __P((pcici_t, pcidi_t)); 80static void en_pci_shutdown __P((void *, int)); 81 82/* 83 * local structures 84 */ 85 86struct en_pci_softc { 87 /* bus independent stuff */ 88 struct en_softc esc; /* includes "device" structure */ 89 90 /* PCI bus glue */ 91 void *sc_ih; /* interrupt handle */ 92 pci_chipset_tag_t en_pc; /* for PCI calls */ 93 pcici_t en_confid; /* config id */ 94}; 95 96#if !defined(MIDWAY_ENIONLY) 97static void eni_get_macaddr __P((struct en_pci_softc *)); 98#endif 99#if !defined(MIDWAY_ADPONLY) 100static void adp_get_macaddr __P((struct en_pci_softc *)); 101#endif 102 103/* 104 * pointers to softcs (we alloc) 105 */ 106 107static struct en_pci_softc *enpcis[NEN] = {0}; 108extern struct cfdriver en_cd; 109 110/* 111 * autoconfig structures 112 */ 113 114static u_long en_pci_count; 115 116static struct pci_device endevice = { 117 "en", 118 en_pci_probe, 119 en_pci_attach, 120 &en_pci_count, 121 NULL, 122}; 123 124COMPAT_PCI_DRIVER (en, endevice); 125 126/* 127 * local defines (PCI specific stuff) 128 */ 129 130/* 131 * address of config base memory address register in PCI config space 132 * (this is card specific) 133 */ 134 135#define PCI_CBMA 0x10 136 137/* 138 * tonga (pci bridge). ENI cards only! 139 */ 140 141#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 142 143#define TONGA_SWAP_DMA 0x80 /* endian swap control */ 144#define TONGA_SWAP_BYTE 0x40 145#define TONGA_SWAP_WORD 0x20 146 147/* 148 * adaptec pci bridge. ADP cards only! 149 */ 150 151#define ADP_PCIREG 0x050040 /* PCI control register */ 152 153#define ADP_PCIREG_RESET 0x1 /* reset card */ 154#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 155#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 156#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 157 158#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 159#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 160#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 161#define PCI_VENDOR_ADP 0x9004 /* adaptec */ 162#define PCI_PRODUCT_ADP_AIC5900 0x5900 163#define PCI_PRODUCT_ADP_AIC5905 0x5905 164#define PCI_VENDOR(x) ((x) & 0xFFFF) 165#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 166 167#if !defined(MIDWAY_ENIONLY) 168 169static void adp_busreset __P((void *)); 170 171/* 172 * bus specific reset function [ADP only!] 173 */ 174 175static void adp_busreset(v) 176 177void *v; 178 179{ 180 struct en_softc *sc = (struct en_softc *) v; 181 u_int32_t dummy; 182 183 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); 184 DELAY(1000); /* let it reset */ 185 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 186 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 187 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); 188 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 189 if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != 190 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) 191 printf("adp_busreset: Adaptec ATM did NOT reset!\n"); 192} 193#endif 194 195/***********************************************************************/ 196 197/* 198 * autoconfig stuff 199 */ 200 201static const char *en_pci_probe(config_id, device_id) 202 203pcici_t config_id; 204pcidi_t device_id; 205 206{ 207#if !defined(MIDWAY_ADPONLY) 208 if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS && 209 (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || 210 PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) 211 return "Efficient Networks ENI-155p"; 212#endif 213 214#if !defined(MIDWAY_ENIONLY) 215 if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP && 216 (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 || 217 PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905)) 218 return "Adaptec 155 ATM"; 219#endif 220 221 return 0; 222} 223 224static void en_pci_attach(config_id, unit) 225 226pcici_t config_id; 227int unit; 228 229{ 230 struct en_softc *sc; 231 struct en_pci_softc *scp; 232 pcidi_t device_id; 233 int retval; 234 vm_offset_t pa; 235 236 if (unit >= NEN) { 237 printf("en%d: not configured; kernel is built for only %d device%s.\n", 238 unit, NEN, NEN == 1 ? "" : "s"); 239 return; 240 } 241 242 scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); 243 if (scp == NULL) 244 return; 245 bzero(scp, sizeof(*scp)); /* zero */ 246 sc = &scp->esc; 247 248 retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa); 249 250 if (!retval) { 251 free((caddr_t) scp, M_DEVBUF); 252 return; 253 } 254 enpcis[unit] = scp; /* lock it in */ 255 en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */ 256 en_cd.cd_ndevs = NEN; 257 snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "en%d", unit); 258 sc->enif.if_unit = unit; 259 sc->enif.if_name = "en"; 260 scp->en_confid = config_id; 261 262 /* 263 * figure out if we are an adaptec card or not. 264 * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already 265 * had that info? 266 */ 267 268 device_id = pci_conf_read(config_id, PCI_ID_REG); 269 sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0; 270 271 /* 272 * Add shutdown hook so that DMA is disabled prior to reboot. Not 273 * doing so could allow DMA to corrupt kernel memory during the 274 * reboot before the driver initializes. 275 */ 276 EVENTHANDLER_REGISTER(shutdown_post_sync, en_pci_shutdown, scp, 277 SHUTDOWN_PRI_DEFAULT); 278 279 if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) { 280 printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); 281 return; 282 } 283 sc->ipl = 1; /* XXX */ 284 285 /* 286 * set up pci bridge 287 */ 288 289#if !defined(MIDWAY_ENIONLY) 290 if (sc->is_adaptec) { 291 adp_get_macaddr(scp); 292 sc->en_busreset = adp_busreset; 293 adp_busreset(sc); 294 } 295#endif 296 297#if !defined(MIDWAY_ADPONLY) 298 if (!sc->is_adaptec) { 299 eni_get_macaddr(scp); 300 sc->en_busreset = NULL; 301 pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); 302 } 303#endif 304 305 /* 306 * done PCI specific stuff 307 */ 308 309 en_attach(sc); 310 311} 312 313static void 314en_pci_shutdown( 315 void *sc, 316 int howto) 317{ 318 struct en_pci_softc *psc = (struct en_pci_softc *)sc; 319 320 en_reset(&psc->esc); 321 DELAY(10); 322} 323 324#if !defined(MIDWAY_ENIONLY) 325 326#if defined(sparc) || defined(__FreeBSD__) 327#define bus_space_read_1(t, h, o) \ 328 ((void)t, (*(volatile u_int8_t *)((h) + (o)))) 329#endif 330 331static void 332adp_get_macaddr(scp) 333 struct en_pci_softc *scp; 334{ 335 struct en_softc * sc = (struct en_softc *)scp; 336 int lcv; 337 338 for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) 339 sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, 340 MID_ADPMACOFF + lcv); 341} 342 343#endif /* MIDWAY_ENIONLY */ 344 345#if !defined(MIDWAY_ADPONLY) 346 347/* 348 * Read station (MAC) address from serial EEPROM. 349 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. 350 */ 351#define EN_PROM_MAGIC 0x0c 352#define EN_PROM_DATA 0x02 353#define EN_PROM_CLK 0x01 354#define EN_ESI 64 355 356static void 357eni_get_macaddr(scp) 358 struct en_pci_softc *scp; 359{ 360 struct en_softc * sc = (struct en_softc *)scp; 361 pcici_t id = scp->en_confid; 362 int i, j, address, status; 363 u_int32_t data, t_data; 364 u_int8_t tmp; 365 366 t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00; 367 368 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; 369 pci_conf_write(id, EN_TONGA, data); 370 371 for (i = 0; i < sizeof(sc->macaddr); i ++){ 372 /* start operation */ 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 data &= ~EN_PROM_DATA ; 378 pci_conf_write(id, EN_TONGA, data); 379 data &= ~EN_PROM_CLK ; 380 pci_conf_write(id, EN_TONGA, data); 381 /* send address with serial line */ 382 address = ((i + EN_ESI) << 1) + 1; 383 for ( j = 7 ; j >= 0 ; j --){ 384 data = (address >> j) & 1 ? data | EN_PROM_DATA : 385 data & ~EN_PROM_DATA; 386 pci_conf_write(id, EN_TONGA, data); 387 data |= EN_PROM_CLK ; 388 pci_conf_write(id, EN_TONGA, data); 389 data &= ~EN_PROM_CLK ; 390 pci_conf_write(id, EN_TONGA, data); 391 } 392 /* get ack */ 393 data |= EN_PROM_DATA ; 394 pci_conf_write(id, EN_TONGA, data); 395 data |= EN_PROM_CLK ; 396 pci_conf_write(id, EN_TONGA, data); 397 data = pci_conf_read(id, EN_TONGA); 398 status = data & EN_PROM_DATA; 399 data &= ~EN_PROM_CLK ; 400 pci_conf_write(id, EN_TONGA, data); 401 data |= EN_PROM_DATA ; 402 pci_conf_write(id, EN_TONGA, data); 403 404 tmp = 0; 405 406 for ( j = 7 ; j >= 0 ; j --){ 407 tmp <<= 1; 408 data |= EN_PROM_DATA ; 409 pci_conf_write(id, EN_TONGA, data); 410 data |= EN_PROM_CLK ; 411 pci_conf_write(id, EN_TONGA, data); 412 data = pci_conf_read(id, EN_TONGA); 413 if(data & EN_PROM_DATA) tmp |= 1; 414 data &= ~EN_PROM_CLK ; 415 pci_conf_write(id, EN_TONGA, data); 416 data |= EN_PROM_DATA ; 417 pci_conf_write(id, EN_TONGA, data); 418 } 419 /* get ack */ 420 data |= EN_PROM_DATA ; 421 pci_conf_write(id, EN_TONGA, data); 422 data |= EN_PROM_CLK ; 423 pci_conf_write(id, EN_TONGA, data); 424 data = pci_conf_read(id, EN_TONGA); 425 status = data & EN_PROM_DATA; 426 data &= ~EN_PROM_CLK ; 427 pci_conf_write(id, EN_TONGA, data); 428 data |= EN_PROM_DATA ; 429 pci_conf_write(id, EN_TONGA, data); 430 431 sc->macaddr[i] = tmp; 432 } 433 /* stop operation */ 434 data &= ~EN_PROM_DATA; 435 pci_conf_write(id, EN_TONGA, data); 436 data |= EN_PROM_CLK; 437 pci_conf_write(id, EN_TONGA, data); 438 data |= EN_PROM_DATA; 439 pci_conf_write(id, EN_TONGA, data); 440 pci_conf_write(id, EN_TONGA, t_data); 441} 442 443#endif /* !MIDWAY_ADPONLY */ 444