1 /* $NetBSD: if_tlp_eisa.c,v 1.6 2000/08/14 14:26:03 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * EISA bus front-end for the Digital Semiconductor ``Tulip'' (21x4x) 42 * Ethernet controller family driver. 43 */ 44 45 #include "opt_inet.h" 46 #include "opt_ns.h" 47 #include "bpfilter.h" 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/mbuf.h> 52 #include <sys/malloc.h> 53 #include <sys/kernel.h> 54 #include <sys/socket.h> 55 #include <sys/ioctl.h> 56 #include <sys/errno.h> 57 #include <sys/device.h> 58 59 #include <machine/endian.h> 60 61 #include <net/if.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 #include <net/if_ether.h> 65 66 #if NBPFILTER > 0 67 #include <net/bpf.h> 68 #endif 69 70 #ifdef INET 71 #include <netinet/in.h> 72 #include <netinet/if_inarp.h> 73 #endif 74 75 #ifdef NS 76 #include <netns/ns.h> 77 #include <netns/ns_if.h> 78 #endif 79 80 #include <machine/bus.h> 81 #include <machine/intr.h> 82 83 #include <dev/mii/miivar.h> 84 #include <dev/mii/mii_bitbang.h> 85 86 #include <dev/ic/tulipreg.h> 87 #include <dev/ic/tulipvar.h> 88 89 #include <dev/eisa/eisareg.h> 90 #include <dev/eisa/eisavar.h> 91 #include <dev/eisa/eisadevs.h> 92 93 #include <dev/pci/pcireg.h> 94 95 /* 96 * DE425 configuration registers; literal offsets from CSR base. 97 * This is effectively the 21040 PCI configuration space interleaved 98 * into the CSR space (CSRs are space 16 bytes on the DE425). 99 * 100 * What a cool address decoder hack they must have on that board... 101 */ 102 #define DE425_CFID 0x08 /* Configuration ID */ 103 #define DE425_CFCS 0x0c /* Configuration Command-Status */ 104 #define DE425_CFRV 0x18 /* Configuration Revision */ 105 #define DE425_CFLT 0x1c /* Configuration Latency Timer */ 106 #define DE425_CBIO 0x28 /* Configuration Base I/O Address */ 107 #define DE425_CFDA 0x2c /* Configuration Driver Area */ 108 #define DE425_ENETROM 0xc90 /* Offset in I/O space for ENETROM */ 109 #define DE425_CFG0 0xc88 /* IRQ Configuration Register */ 110 111 struct tulip_eisa_softc { 112 struct tulip_softc sc_tulip; /* real Tulip softc */ 113 114 /* EISA-specific goo. */ 115 void *sc_ih; /* interrupt handle */ 116 }; 117 118 int tlp_eisa_match __P((struct device *, struct cfdata *, void *)); 119 void tlp_eisa_attach __P((struct device *, struct device *, void *)); 120 121 struct cfattach tlp_eisa_ca = { 122 sizeof(struct tulip_eisa_softc), tlp_eisa_match, tlp_eisa_attach, 123 }; 124 125 const int tlp_eisa_irqs[] = { 5, 9, 10, 11 }; 126 127 const struct tulip_eisa_product { 128 const char *tep_eisaid; /* EISA ID */ 129 const char *tep_name; /* device name */ 130 tulip_chip_t tep_chip; /* base Tulip chip type */ 131 } tlp_eisa_products[] = { 132 { "DEC4250", "DEC DE425", 133 TULIP_CHIP_DE425 }, 134 135 { NULL, NULL, 136 TULIP_CHIP_INVALID }, 137 }; 138 139 const struct tulip_eisa_product *tlp_eisa_lookup 140 __P((const struct eisa_attach_args *)); 141 142 const struct tulip_eisa_product * 143 tlp_eisa_lookup(ea) 144 const struct eisa_attach_args *ea; 145 { 146 const struct tulip_eisa_product *tep; 147 148 for (tep = tlp_eisa_products; 149 tep->tep_chip != TULIP_CHIP_INVALID; tep++) 150 if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0) 151 return (tep); 152 return (NULL); 153 } 154 155 int 156 tlp_eisa_match(parent, match, aux) 157 struct device *parent; 158 struct cfdata *match; 159 void *aux; 160 { 161 struct eisa_attach_args *ea = aux; 162 163 if (tlp_eisa_lookup(ea) != NULL) 164 return (1); 165 166 return (0); 167 } 168 169 void 170 tlp_eisa_attach(parent, self, aux) 171 struct device *parent, *self; 172 void *aux; 173 { 174 static const u_int8_t testpat[] = 175 { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa }; 176 struct tulip_eisa_softc *esc = (void *) self; 177 struct tulip_softc *sc = &esc->sc_tulip; 178 struct eisa_attach_args *ea = aux; 179 eisa_chipset_tag_t ec = ea->ea_ec; 180 eisa_intr_handle_t ih; 181 bus_space_tag_t iot = ea->ea_iot; 182 bus_space_handle_t ioh; 183 const char *intrstr; 184 const struct tulip_eisa_product *tep; 185 u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)]; 186 u_int32_t val; 187 int irq, i, cnt; 188 189 /* 190 * Map the device. 191 */ 192 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot), 193 EISA_SLOT_SIZE, 0, &ioh)) { 194 printf(": unable to map I/O space\n"); 195 return; 196 } 197 198 sc->sc_st = iot; 199 sc->sc_sh = ioh; 200 201 tep = tlp_eisa_lookup(ea); 202 if (tep == NULL) { 203 printf("\n"); 204 panic("tlp_eisa_attach: impossible"); 205 } 206 sc->sc_chip = tep->tep_chip; 207 208 /* 209 * DE425's registers are 16 bytes long; the PCI configuration 210 * space registers are interleaved in the I/O space. 211 */ 212 sc->sc_regshift = 4; 213 214 /* 215 * No power management hooks. 216 */ 217 sc->sc_flags |= TULIPF_ENABLED; 218 219 /* 220 * CBIO must map the EISA slot, and I/O access and Bus Mastering 221 * must be enabled. 222 */ 223 bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot)); 224 bus_space_write_4(iot, ioh, DE425_CFCS, 225 bus_space_read_4(iot, ioh, DE425_CFCS) | 226 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE); 227 228 /* 229 * Get revision info. 230 */ 231 sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff; 232 233 printf(": %s Ethernet, pass %d.%d\n", 234 tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 235 236 sc->sc_dmat = ea->ea_dmat; 237 238 /* 239 * EISA doesn't have a cache line register. 240 */ 241 sc->sc_cacheline = 0; 242 243 /* 244 * Find the beginning of the Ethernet Address ROM. 245 */ 246 for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) { 247 tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 248 if (tmpbuf[i] == testpat[i]) 249 i++; 250 else 251 i = 0; 252 } 253 254 /* 255 * ...and now read the contents of the Ethernet Address ROM. 256 */ 257 sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK); 258 memset(sc->sc_srom, 32, sizeof(sc->sc_srom)); 259 for (i = 0; i < 32; i++) 260 sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 261 262 /* 263 * None of the DE425 boards have the new-style SROMs. 264 */ 265 if (tlp_parse_old_srom(sc, enaddr) == 0) { 266 printf("%s: unable to decode old-style SROM\n", 267 sc->sc_dev.dv_xname); 268 return; 269 } 270 271 /* 272 * All DE425 boards use the 21040 media switch. 273 */ 274 sc->sc_mediasw = &tlp_21040_mediasw; 275 276 /* 277 * Figure out which IRQ we want to use, and determine of it's 278 * edge- or level-triggered. 279 */ 280 val = bus_space_read_4(iot, ioh, DE425_CFG0); 281 irq = tlp_eisa_irqs[(val >> 1) & 0x03]; 282 283 /* 284 * Map and establish our interrupt. 285 */ 286 if (eisa_intr_map(ec, irq, &ih)) { 287 printf("%s: unable to map interrupt (%u)\n", 288 sc->sc_dev.dv_xname, irq); 289 return; 290 } 291 intrstr = eisa_intr_string(ec, ih); 292 esc->sc_ih = eisa_intr_establish(ec, ih, 293 (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc); 294 if (esc->sc_ih == NULL) { 295 printf("%s: unable to establish interrupt", 296 sc->sc_dev.dv_xname); 297 if (intrstr != NULL) 298 printf(" at %s", intrstr); 299 printf("\n"); 300 return; 301 } 302 if (intrstr != NULL) 303 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, 304 intrstr); 305 306 /* 307 * Finish off the attach. 308 */ 309 tlp_attach(sc, enaddr); 310 } 311