1 /* $NetBSD: if_tlp_eisa.c,v 1.11 2002/10/02 16:33:47 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 <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: if_tlp_eisa.c,v 1.11 2002/10/02 16:33:47 thorpej Exp $"); 47 48 #include "opt_inet.h" 49 #include "opt_ns.h" 50 #include "bpfilter.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/mbuf.h> 55 #include <sys/malloc.h> 56 #include <sys/kernel.h> 57 #include <sys/socket.h> 58 #include <sys/ioctl.h> 59 #include <sys/errno.h> 60 #include <sys/device.h> 61 62 #include <machine/endian.h> 63 64 #include <net/if.h> 65 #include <net/if_dl.h> 66 #include <net/if_media.h> 67 #include <net/if_ether.h> 68 69 #if NBPFILTER > 0 70 #include <net/bpf.h> 71 #endif 72 73 #ifdef INET 74 #include <netinet/in.h> 75 #include <netinet/if_inarp.h> 76 #endif 77 78 #ifdef NS 79 #include <netns/ns.h> 80 #include <netns/ns_if.h> 81 #endif 82 83 #include <machine/bus.h> 84 #include <machine/intr.h> 85 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/mii_bitbang.h> 88 89 #include <dev/ic/tulipreg.h> 90 #include <dev/ic/tulipvar.h> 91 92 #include <dev/eisa/eisareg.h> 93 #include <dev/eisa/eisavar.h> 94 #include <dev/eisa/eisadevs.h> 95 96 #include <dev/pci/pcireg.h> 97 98 /* 99 * DE425 configuration registers; literal offsets from CSR base. 100 * This is effectively the 21040 PCI configuration space interleaved 101 * into the CSR space (CSRs are space 16 bytes on the DE425). 102 * 103 * What a cool address decoder hack they must have on that board... 104 */ 105 #define DE425_CFID 0x08 /* Configuration ID */ 106 #define DE425_CFCS 0x0c /* Configuration Command-Status */ 107 #define DE425_CFRV 0x18 /* Configuration Revision */ 108 #define DE425_CFLT 0x1c /* Configuration Latency Timer */ 109 #define DE425_CBIO 0x28 /* Configuration Base I/O Address */ 110 #define DE425_CFDA 0x2c /* Configuration Driver Area */ 111 #define DE425_ENETROM 0xc90 /* Offset in I/O space for ENETROM */ 112 #define DE425_CFG0 0xc88 /* IRQ Configuration Register */ 113 114 struct tulip_eisa_softc { 115 struct tulip_softc sc_tulip; /* real Tulip softc */ 116 117 /* EISA-specific goo. */ 118 void *sc_ih; /* interrupt handle */ 119 }; 120 121 int tlp_eisa_match __P((struct device *, struct cfdata *, void *)); 122 void tlp_eisa_attach __P((struct device *, struct device *, void *)); 123 124 CFATTACH_DECL(tlp_eisa, sizeof(struct tulip_eisa_softc), 125 tlp_eisa_match, tlp_eisa_attach, NULL, NULL); 126 127 const int tlp_eisa_irqs[] = { 5, 9, 10, 11 }; 128 129 const struct tulip_eisa_product { 130 const char *tep_eisaid; /* EISA ID */ 131 const char *tep_name; /* device name */ 132 tulip_chip_t tep_chip; /* base Tulip chip type */ 133 } tlp_eisa_products[] = { 134 { "DEC4250", "DEC DE425", 135 TULIP_CHIP_DE425 }, 136 137 { NULL, NULL, 138 TULIP_CHIP_INVALID }, 139 }; 140 141 const struct tulip_eisa_product *tlp_eisa_lookup 142 __P((const struct eisa_attach_args *)); 143 144 const struct tulip_eisa_product * 145 tlp_eisa_lookup(ea) 146 const struct eisa_attach_args *ea; 147 { 148 const struct tulip_eisa_product *tep; 149 150 for (tep = tlp_eisa_products; 151 tep->tep_chip != TULIP_CHIP_INVALID; tep++) 152 if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0) 153 return (tep); 154 return (NULL); 155 } 156 157 int 158 tlp_eisa_match(parent, match, aux) 159 struct device *parent; 160 struct cfdata *match; 161 void *aux; 162 { 163 struct eisa_attach_args *ea = aux; 164 165 if (tlp_eisa_lookup(ea) != NULL) 166 return (1); 167 168 return (0); 169 } 170 171 void 172 tlp_eisa_attach(parent, self, aux) 173 struct device *parent, *self; 174 void *aux; 175 { 176 static const u_int8_t testpat[] = 177 { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa }; 178 struct tulip_eisa_softc *esc = (void *) self; 179 struct tulip_softc *sc = &esc->sc_tulip; 180 struct eisa_attach_args *ea = aux; 181 eisa_chipset_tag_t ec = ea->ea_ec; 182 eisa_intr_handle_t ih; 183 bus_space_tag_t iot = ea->ea_iot; 184 bus_space_handle_t ioh; 185 const char *intrstr; 186 const struct tulip_eisa_product *tep; 187 u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)]; 188 u_int32_t val; 189 int irq, i, cnt; 190 191 /* 192 * Map the device. 193 */ 194 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot), 195 EISA_SLOT_SIZE, 0, &ioh)) { 196 printf(": unable to map I/O space\n"); 197 return; 198 } 199 200 sc->sc_st = iot; 201 sc->sc_sh = ioh; 202 203 tep = tlp_eisa_lookup(ea); 204 if (tep == NULL) { 205 printf("\n"); 206 panic("tlp_eisa_attach: impossible"); 207 } 208 sc->sc_chip = tep->tep_chip; 209 210 /* 211 * DE425's registers are 16 bytes long; the PCI configuration 212 * space registers are interleaved in the I/O space. 213 */ 214 sc->sc_regshift = 4; 215 216 /* 217 * No power management hooks. 218 */ 219 sc->sc_flags |= TULIPF_ENABLED; 220 221 /* 222 * CBIO must map the EISA slot, and I/O access and Bus Mastering 223 * must be enabled. 224 */ 225 bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot)); 226 bus_space_write_4(iot, ioh, DE425_CFCS, 227 bus_space_read_4(iot, ioh, DE425_CFCS) | 228 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE); 229 230 /* 231 * Get revision info. 232 */ 233 sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff; 234 235 printf(": %s Ethernet, pass %d.%d\n", 236 tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 237 238 sc->sc_dmat = ea->ea_dmat; 239 240 /* 241 * EISA doesn't have a cache line register. 242 */ 243 sc->sc_cacheline = 0; 244 245 /* 246 * Find the beginning of the Ethernet Address ROM. 247 */ 248 for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) { 249 tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 250 if (tmpbuf[i] == testpat[i]) 251 i++; 252 else 253 i = 0; 254 } 255 256 /* 257 * ...and now read the contents of the Ethernet Address ROM. 258 */ 259 sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK|M_ZERO); 260 for (i = 0; i < 32; i++) 261 sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 262 263 /* 264 * None of the DE425 boards have the new-style SROMs. 265 */ 266 if (tlp_parse_old_srom(sc, enaddr) == 0) { 267 printf("%s: unable to decode old-style SROM\n", 268 sc->sc_dev.dv_xname); 269 return; 270 } 271 272 /* 273 * All DE425 boards use the 21040 media switch. 274 */ 275 sc->sc_mediasw = &tlp_21040_mediasw; 276 277 /* 278 * Figure out which IRQ we want to use, and determine of it's 279 * edge- or level-triggered. 280 */ 281 val = bus_space_read_4(iot, ioh, DE425_CFG0); 282 irq = tlp_eisa_irqs[(val >> 1) & 0x03]; 283 284 /* 285 * Map and establish our interrupt. 286 */ 287 if (eisa_intr_map(ec, irq, &ih)) { 288 printf("%s: unable to map interrupt (%u)\n", 289 sc->sc_dev.dv_xname, irq); 290 return; 291 } 292 intrstr = eisa_intr_string(ec, ih); 293 esc->sc_ih = eisa_intr_establish(ec, ih, 294 (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc); 295 if (esc->sc_ih == NULL) { 296 printf("%s: unable to establish interrupt", 297 sc->sc_dev.dv_xname); 298 if (intrstr != NULL) 299 printf(" at %s", intrstr); 300 printf("\n"); 301 return; 302 } 303 if (intrstr != NULL) 304 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, 305 intrstr); 306 307 /* 308 * Finish off the attach. 309 */ 310 tlp_attach(sc, enaddr); 311 } 312