if_en_pci.c revision 25603
1260684Skaiw/* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */ 2260684Skaiw 3260684Skaiw/* 4260684Skaiw * 5260684Skaiw * Copyright (c) 1996 Charles D. Cranor and Washington University. 6260684Skaiw * All rights reserved. 7260684Skaiw * 8260684Skaiw * Redistribution and use in source and binary forms, with or without 9260684Skaiw * modification, are permitted provided that the following conditions 10260684Skaiw * are met: 11260684Skaiw * 1. Redistributions of source code must retain the above copyright 12260684Skaiw * notice, this list of conditions and the following disclaimer. 13260684Skaiw * 2. Redistributions in binary form must reproduce the above copyright 14260684Skaiw * notice, this list of conditions and the following disclaimer in the 15260684Skaiw * documentation and/or other materials provided with the distribution. 16260684Skaiw * 3. All advertising materials mentioning features or use of this software 17260684Skaiw * must display the following acknowledgement: 18260684Skaiw * This product includes software developed by Charles D. Cranor and 19260684Skaiw * Washington University. 20260684Skaiw * 4. The name of the author may not be used to endorse or promote products 21260684Skaiw * derived from this software without specific prior written permission. 22260684Skaiw * 23260684Skaiw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24260684Skaiw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25260684Skaiw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26260684Skaiw * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27260684Skaiw * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28260684Skaiw * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29260684Skaiw * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30260684Skaiw * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31260684Skaiw * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32260684Skaiw * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33260684Skaiw */ 34260684Skaiw 35260684Skaiw/* 36260684Skaiw * 37260684Skaiw * i f _ e n _ p c i . c 38260684Skaiw * 39260684Skaiw * author: Chuck Cranor <chuck@ccrc.wustl.edu> 40260684Skaiw * started: spring, 1996. 41260684Skaiw * 42260684Skaiw * FreeBSD PCI glue for the eni155p card. 43260684Skaiw * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs. 44260684Skaiw */ 45260684Skaiw 46260684Skaiw#include "en.h" 47260684Skaiw#include "pci.h" 48260684Skaiw#if (NEN > 0) && (NPCI > 0) 49260684Skaiw 50260684Skaiw#include <sys/param.h> 51260684Skaiw#include <sys/types.h> 52260684Skaiw#include <sys/kernel.h> 53260684Skaiw#include <sys/systm.h> 54260684Skaiw#ifndef SHUTDOWN_PRE_SYNC 55260684Skaiw/* 56260684Skaiw * device shutdown mechanism has been changed since 2.2-ALPHA. 57260684Skaiw * if SHUTDOWN_PRE_SYNC is defined in "sys/systm.h", use new one. 58260684Skaiw * otherwise, use old one. 59260684Skaiw * new: 2.2-ALPHA, 2.2-BETA, 2.2-GAMME, 2.2-RELEASE, 3.0 60260684Skaiw * old: 2.1.5, 2.1.6, 2.2-SNAP 61260684Skaiw * -- kjc 62260684Skaiw */ 63260684Skaiw#include <sys/devconf.h> 64260684Skaiw#endif 65260684Skaiw#include <sys/mbuf.h> 66260684Skaiw#include <sys/socket.h> 67260684Skaiw#include <sys/socketvar.h> 68260684Skaiw 69260684Skaiw#include <machine/cpufunc.h> /* for rdtsc proto for clock.h below */ 70260684Skaiw#include <machine/clock.h> /* for DELAY */ 71260684Skaiw 72260684Skaiw#include <net/if.h> 73260684Skaiw 74260684Skaiw#include <pci/pcivar.h> 75260684Skaiw#include <pci/pcireg.h> 76260684Skaiw 77260684Skaiw#include <dev/en/midwayreg.h> 78260684Skaiw#include <dev/en/midwayvar.h> 79260684Skaiw 80260684Skaiw 81260684Skaiw/* 82260684Skaiw * prototypes 83260684Skaiw */ 84260684Skaiw 85260684Skaiwstatic void en_pci_attach __P((pcici_t, int)); 86260684Skaiwstatic char *en_pci_probe __P((pcici_t, pcidi_t)); 87260684Skaiw#ifdef SHUTDOWN_PRE_SYNC 88260684Skaiwstatic void en_pci_shutdown __P((int, void *)); 89260684Skaiw#else 90260684Skaiwstatic int en_pci_shutdown __P((struct kern_devconf *, int)); 91260684Skaiw#endif 92260684Skaiw 93260684Skaiw/* 94260684Skaiw * local structures 95260684Skaiw */ 96260684Skaiw 97260684Skaiwstruct en_pci_softc { 98260684Skaiw /* bus independent stuff */ 99260684Skaiw struct en_softc esc; /* includes "device" structure */ 100260684Skaiw 101260684Skaiw /* PCI bus glue */ 102260684Skaiw void *sc_ih; /* interrupt handle */ 103260684Skaiw pci_chipset_tag_t en_pc; /* for PCI calls */ 104260684Skaiw 105260684Skaiw}; 106260684Skaiw 107260684Skaiw/* 108260684Skaiw * pointers to softcs (we alloc) 109260684Skaiw */ 110260684Skaiw 111260684Skaiwstatic struct en_pci_softc *enpcis[NEN] = {0}; 112260684Skaiwextern struct cfdriver en_cd; 113260684Skaiw 114260684Skaiw/* 115260684Skaiw * autoconfig structures 116260684Skaiw */ 117260684Skaiw 118260684Skaiwstatic u_long en_pci_count; 119260684Skaiw 120260684Skaiwstatic struct pci_device endevice = { 121260684Skaiw "en", 122260684Skaiw en_pci_probe, 123260684Skaiw en_pci_attach, 124260684Skaiw &en_pci_count, 125260684Skaiw#ifdef SHUTDOWN_PRE_SYNC 126260684Skaiw NULL, 127260684Skaiw#else 128260684Skaiw en_pci_shutdown, 129260684Skaiw#endif 130260684Skaiw}; 131260684Skaiw 132260684SkaiwDATA_SET (pcidevice_set, endevice); 133260684Skaiw 134260684Skaiw/* 135260684Skaiw * local defines (PCI specific stuff) 136260684Skaiw */ 137260684Skaiw 138260684Skaiw/* 139260684Skaiw * address of config base memory address register in PCI config space 140260684Skaiw * (this is card specific) 141260684Skaiw */ 142260684Skaiw 143260684Skaiw#define PCI_CBMA 0x10 144260684Skaiw 145260684Skaiw/* 146260684Skaiw * tonga (pci bridge). ENI cards only! 147260684Skaiw */ 148260684Skaiw 149260684Skaiw#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 150260684Skaiw 151260684Skaiw#define TONGA_SWAP_DMA 0x80 /* endian swap control */ 152#define TONGA_SWAP_BYTE 0x40 153#define TONGA_SWAP_WORD 0x20 154 155/* 156 * adaptec pci bridge. ADP cards only! 157 */ 158 159#define ADP_PCIREG 0x050040 /* PCI control register */ 160 161#define ADP_PCIREG_RESET 0x1 /* reset card */ 162#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 163#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 164#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 165 166#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 167#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 168#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 169#define PCI_VENDOR_ADP 0x9004 /* adaptec */ 170#define PCI_PRODUCT_ADP_AIC5900 0x5900 171#define PCI_PRODUCT_ADP_AIC5905 0x5905 172#define PCI_VENDOR(x) ((x) & 0xFFFF) 173#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 174 175#if !defined(MIDWAY_ENIONLY) 176 177static void adp_busreset __P((void *)); 178 179/* 180 * bus specific reset function [ADP only!] 181 */ 182 183static void adp_busreset(v) 184 185void *v; 186 187{ 188 struct en_softc *sc = (struct en_softc *) v; 189 u_int32_t dummy; 190 191 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); 192 DELAY(1000); /* let it reset */ 193 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 194 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 195 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); 196 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 197 if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != 198 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) 199 printf("adp_busreset: Adaptec ATM did NOT reset!\n"); 200} 201#endif 202 203/***********************************************************************/ 204 205/* 206 * autoconfig stuff 207 */ 208 209static char *en_pci_probe(config_id, device_id) 210 211pcici_t config_id; 212pcidi_t device_id; 213 214{ 215#if !defined(MIDWAY_ADPONLY) 216 if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS && 217 (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || 218 PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) 219 return "Efficient Networks ENI-155p"; 220#endif 221 222#if !defined(MIDWAY_ENIONLY) 223 if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP && 224 (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 || 225 PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905)) 226 return "Adaptec 155 ATM"; 227#endif 228 229 return 0; 230} 231 232static void en_pci_attach(config_id, unit) 233 234pcici_t config_id; 235int unit; 236 237{ 238 struct en_softc *sc; 239 struct en_pci_softc *scp; 240 pcidi_t device_id; 241 int retval; 242 vm_offset_t pa; 243 244 if (unit >= NEN) { 245 printf("en%d: not configured; kernel is built for only %d device%s.\n", 246 unit, NEN, NEN == 1 ? "" : "s"); 247 return; 248 } 249 250 scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); 251 if (scp == NULL) 252 return; 253 bzero(scp, sizeof(*scp)); /* zero */ 254 sc = &scp->esc; 255 256 retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa); 257 258 if (!retval) { 259 free((caddr_t) scp, M_DEVBUF); 260 return; 261 } 262 enpcis[unit] = scp; /* lock it in */ 263 en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */ 264 en_cd.cd_ndevs = NEN; 265 sprintf(sc->sc_dev.dv_xname, "en%d", unit); 266 sc->enif.if_unit = unit; 267 sc->enif.if_name = "en"; 268 269 /* 270 * figure out if we are an adaptec card or not. 271 * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already 272 * had that info? 273 */ 274 275 device_id = pci_conf_read(config_id, PCI_ID_REG); 276 sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0; 277 278#ifdef SHUTDOWN_PRE_SYNC 279 /* 280 * Add shutdown hook so that DMA is disabled prior to reboot. Not 281 * doing so could allow DMA to corrupt kernel memory during the 282 * reboot before the driver initializes. 283 */ 284 at_shutdown(en_pci_shutdown, scp, SHUTDOWN_POST_SYNC); 285#endif 286 287 if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) { 288 printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); 289 return; 290 } 291 sc->ipl = 1; /* XXX */ 292 293 /* 294 * set up pci bridge 295 */ 296 297#if !defined(MIDWAY_ENIONLY) 298 if (sc->is_adaptec) { 299 sc->en_busreset = adp_busreset; 300 adp_busreset(sc); 301 } 302#endif 303 304#if !defined(MIDWAY_ADPONLY) 305 if (!sc->is_adaptec) { 306 sc->en_busreset = NULL; 307 pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); 308 } 309#endif 310 311 /* 312 * done PCI specific stuff 313 */ 314 315 en_attach(sc); 316 317} 318 319#ifdef SHUTDOWN_PRE_SYNC 320static void 321en_pci_shutdown( 322 int howto, 323 void *sc) 324{ 325 struct en_pci_softc *psc = (struct en_pci_softc *)sc; 326 327 en_reset(&psc->esc); 328 DELAY(10); 329} 330#else /* !SHUTDOWN_PRE_SYNC */ 331static int 332en_pci_shutdown(kdc, force) 333 334struct kern_devconf *kdc; 335int force; 336 337{ 338 if (kdc->kdc_unit < NEN) { 339 struct en_pci_softc *psc = enpcis[kdc->kdc_unit]; 340 if (psc) /* can it be null? */ 341 en_reset(&psc->esc); 342 DELAY(10); 343 } 344 dev_detach(kdc); 345 return(0); 346} 347#endif /* !SHUTDOWN_PRE_SYNC */ 348#endif /* NEN > 0 && NPCI > 0 */ 349