if_en_pci.c revision 50107
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 50107 1999-08-21 06:24:40Z msmith $ 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#include "en.h" 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((void *, int)); 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 117COMPAT_PCI_DRIVER (en, endevice); 118 119/* 120 * local defines (PCI specific stuff) 121 */ 122 123/* 124 * address of config base memory address register in PCI config space 125 * (this is card specific) 126 */ 127 128#define PCI_CBMA 0x10 129 130/* 131 * tonga (pci bridge). ENI cards only! 132 */ 133 134#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 135 136#define TONGA_SWAP_DMA 0x80 /* endian swap control */ 137#define TONGA_SWAP_BYTE 0x40 138#define TONGA_SWAP_WORD 0x20 139 140/* 141 * adaptec pci bridge. ADP cards only! 142 */ 143 144#define ADP_PCIREG 0x050040 /* PCI control register */ 145 146#define ADP_PCIREG_RESET 0x1 /* reset card */ 147#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 148#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 149#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 150 151#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 152#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 153#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 154#define PCI_VENDOR_ADP 0x9004 /* adaptec */ 155#define PCI_PRODUCT_ADP_AIC5900 0x5900 156#define PCI_PRODUCT_ADP_AIC5905 0x5905 157#define PCI_VENDOR(x) ((x) & 0xFFFF) 158#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 159 160#if !defined(MIDWAY_ENIONLY) 161 162static void adp_busreset __P((void *)); 163 164/* 165 * bus specific reset function [ADP only!] 166 */ 167 168static void adp_busreset(v) 169 170void *v; 171 172{ 173 struct en_softc *sc = (struct en_softc *) v; 174 u_int32_t dummy; 175 176 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); 177 DELAY(1000); /* let it reset */ 178 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 179 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 180 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); 181 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 182 if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != 183 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) 184 printf("adp_busreset: Adaptec ATM did NOT reset!\n"); 185} 186#endif 187 188/***********************************************************************/ 189 190/* 191 * autoconfig stuff 192 */ 193 194static const char *en_pci_probe(config_id, device_id) 195 196pcici_t config_id; 197pcidi_t device_id; 198 199{ 200#if !defined(MIDWAY_ADPONLY) 201 if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS && 202 (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || 203 PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) 204 return "Efficient Networks ENI-155p"; 205#endif 206 207#if !defined(MIDWAY_ENIONLY) 208 if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP && 209 (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 || 210 PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905)) 211 return "Adaptec 155 ATM"; 212#endif 213 214 return 0; 215} 216 217static void en_pci_attach(config_id, unit) 218 219pcici_t config_id; 220int unit; 221 222{ 223 struct en_softc *sc; 224 struct en_pci_softc *scp; 225 pcidi_t device_id; 226 int retval; 227 vm_offset_t pa; 228 229 if (unit >= NEN) { 230 printf("en%d: not configured; kernel is built for only %d device%s.\n", 231 unit, NEN, NEN == 1 ? "" : "s"); 232 return; 233 } 234 235 scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); 236 if (scp == NULL) 237 return; 238 bzero(scp, sizeof(*scp)); /* zero */ 239 sc = &scp->esc; 240 241 retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa); 242 243 if (!retval) { 244 free((caddr_t) scp, M_DEVBUF); 245 return; 246 } 247 enpcis[unit] = scp; /* lock it in */ 248 en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */ 249 en_cd.cd_ndevs = NEN; 250 snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "en%d", unit); 251 sc->enif.if_unit = unit; 252 sc->enif.if_name = "en"; 253 scp->en_confid = config_id; 254 255 /* 256 * figure out if we are an adaptec card or not. 257 * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already 258 * had that info? 259 */ 260 261 device_id = pci_conf_read(config_id, PCI_ID_REG); 262 sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0; 263 264 /* 265 * Add shutdown hook so that DMA is disabled prior to reboot. Not 266 * doing so could allow DMA to corrupt kernel memory during the 267 * reboot before the driver initializes. 268 */ 269 EVENTHANDLER_REGISTER(shutdown_post_sync, en_pci_shutdown, scp, 270 SHUTDOWN_PRI_DEFAULT); 271 272 if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) { 273 printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); 274 return; 275 } 276 sc->ipl = 1; /* XXX */ 277 278 /* 279 * set up pci bridge 280 */ 281 282#if !defined(MIDWAY_ENIONLY) 283 if (sc->is_adaptec) { 284 adp_get_macaddr(scp); 285 sc->en_busreset = adp_busreset; 286 adp_busreset(sc); 287 } 288#endif 289 290#if !defined(MIDWAY_ADPONLY) 291 if (!sc->is_adaptec) { 292 eni_get_macaddr(scp); 293 sc->en_busreset = NULL; 294 pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); 295 } 296#endif 297 298 /* 299 * done PCI specific stuff 300 */ 301 302 en_attach(sc); 303 304} 305 306static void 307en_pci_shutdown( 308 void *sc, 309 int howto) 310{ 311 struct en_pci_softc *psc = (struct en_pci_softc *)sc; 312 313 en_reset(&psc->esc); 314 DELAY(10); 315} 316 317#if !defined(MIDWAY_ENIONLY) 318 319#if defined(sparc) || defined(__FreeBSD__) 320#define bus_space_read_1(t, h, o) \ 321 ((void)t, (*(volatile u_int8_t *)((h) + (o)))) 322#endif 323 324static void 325adp_get_macaddr(scp) 326 struct en_pci_softc *scp; 327{ 328 struct en_softc * sc = (struct en_softc *)scp; 329 int lcv; 330 331 for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) 332 sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, 333 MID_ADPMACOFF + lcv); 334} 335 336#endif /* MIDWAY_ENIONLY */ 337 338#if !defined(MIDWAY_ADPONLY) 339 340/* 341 * Read station (MAC) address from serial EEPROM. 342 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. 343 */ 344#define EN_PROM_MAGIC 0x0c 345#define EN_PROM_DATA 0x02 346#define EN_PROM_CLK 0x01 347#define EN_ESI 64 348 349static void 350eni_get_macaddr(scp) 351 struct en_pci_softc *scp; 352{ 353 struct en_softc * sc = (struct en_softc *)scp; 354 pcici_t id = scp->en_confid; 355 int i, j, address, status; 356 u_int32_t data, t_data; 357 u_int8_t tmp; 358 359 t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00; 360 361 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; 362 pci_conf_write(id, EN_TONGA, data); 363 364 for (i = 0; i < sizeof(sc->macaddr); i ++){ 365 /* start operation */ 366 data |= EN_PROM_DATA ; 367 pci_conf_write(id, EN_TONGA, data); 368 data |= EN_PROM_CLK ; 369 pci_conf_write(id, EN_TONGA, data); 370 data &= ~EN_PROM_DATA ; 371 pci_conf_write(id, EN_TONGA, data); 372 data &= ~EN_PROM_CLK ; 373 pci_conf_write(id, EN_TONGA, data); 374 /* send address with serial line */ 375 address = ((i + EN_ESI) << 1) + 1; 376 for ( j = 7 ; j >= 0 ; j --){ 377 data = (address >> j) & 1 ? data | EN_PROM_DATA : 378 data & ~EN_PROM_DATA; 379 pci_conf_write(id, EN_TONGA, data); 380 data |= EN_PROM_CLK ; 381 pci_conf_write(id, EN_TONGA, data); 382 data &= ~EN_PROM_CLK ; 383 pci_conf_write(id, EN_TONGA, data); 384 } 385 /* get ack */ 386 data |= EN_PROM_DATA ; 387 pci_conf_write(id, EN_TONGA, data); 388 data |= EN_PROM_CLK ; 389 pci_conf_write(id, EN_TONGA, data); 390 data = pci_conf_read(id, EN_TONGA); 391 status = data & EN_PROM_DATA; 392 data &= ~EN_PROM_CLK ; 393 pci_conf_write(id, EN_TONGA, data); 394 data |= EN_PROM_DATA ; 395 pci_conf_write(id, EN_TONGA, data); 396 397 tmp = 0; 398 399 for ( j = 7 ; j >= 0 ; j --){ 400 tmp <<= 1; 401 data |= EN_PROM_DATA ; 402 pci_conf_write(id, EN_TONGA, data); 403 data |= EN_PROM_CLK ; 404 pci_conf_write(id, EN_TONGA, data); 405 data = pci_conf_read(id, EN_TONGA); 406 if(data & EN_PROM_DATA) tmp |= 1; 407 data &= ~EN_PROM_CLK ; 408 pci_conf_write(id, EN_TONGA, data); 409 data |= EN_PROM_DATA ; 410 pci_conf_write(id, EN_TONGA, data); 411 } 412 /* get ack */ 413 data |= EN_PROM_DATA ; 414 pci_conf_write(id, EN_TONGA, data); 415 data |= EN_PROM_CLK ; 416 pci_conf_write(id, EN_TONGA, data); 417 data = pci_conf_read(id, EN_TONGA); 418 status = data & EN_PROM_DATA; 419 data &= ~EN_PROM_CLK ; 420 pci_conf_write(id, EN_TONGA, data); 421 data |= EN_PROM_DATA ; 422 pci_conf_write(id, EN_TONGA, data); 423 424 sc->macaddr[i] = tmp; 425 } 426 /* stop operation */ 427 data &= ~EN_PROM_DATA; 428 pci_conf_write(id, EN_TONGA, data); 429 data |= EN_PROM_CLK; 430 pci_conf_write(id, EN_TONGA, data); 431 data |= EN_PROM_DATA; 432 pci_conf_write(id, EN_TONGA, data); 433 pci_conf_write(id, EN_TONGA, t_data); 434} 435 436#endif /* !MIDWAY_ADPONLY */ 437