1 /* $NetBSD: if_tlp_eisa.c,v 1.19 2007/10/19 11:59:42 ad 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 1.19 2007/10/19 11:59:42 ad Exp $"); 47 48 #include "opt_inet.h" 49 #include "bpfilter.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/mbuf.h> 54 #include <sys/malloc.h> 55 #include <sys/kernel.h> 56 #include <sys/socket.h> 57 #include <sys/ioctl.h> 58 #include <sys/errno.h> 59 #include <sys/device.h> 60 61 #include <machine/endian.h> 62 63 #include <net/if.h> 64 #include <net/if_dl.h> 65 #include <net/if_media.h> 66 #include <net/if_ether.h> 67 68 #if NBPFILTER > 0 69 #include <net/bpf.h> 70 #endif 71 72 #ifdef INET 73 #include <netinet/in.h> 74 #include <netinet/if_inarp.h> 75 #endif 76 77 78 #include <sys/bus.h> 79 #include <sys/intr.h> 80 81 #include <dev/mii/miivar.h> 82 #include <dev/mii/mii_bitbang.h> 83 84 #include <dev/ic/tulipreg.h> 85 #include <dev/ic/tulipvar.h> 86 87 #include <dev/eisa/eisareg.h> 88 #include <dev/eisa/eisavar.h> 89 #include <dev/eisa/eisadevs.h> 90 91 #include <dev/pci/pcireg.h> 92 93 /* 94 * DE425 configuration registers; literal offsets from CSR base. 95 * This is effectively the 21040 PCI configuration space interleaved 96 * into the CSR space (CSRs are space 16 bytes on the DE425). 97 * 98 * What a cool address decoder hack they must have on that board... 99 */ 100 #define DE425_CFID 0x08 /* Configuration ID */ 101 #define DE425_CFCS 0x0c /* Configuration Command-Status */ 102 #define DE425_CFRV 0x18 /* Configuration Revision */ 103 #define DE425_CFLT 0x1c /* Configuration Latency Timer */ 104 #define DE425_CBIO 0x28 /* Configuration Base I/O Address */ 105 #define DE425_CFDA 0x2c /* Configuration Driver Area */ 106 #define DE425_ENETROM 0xc90 /* Offset in I/O space for ENETROM */ 107 #define DE425_CFG0 0xc88 /* IRQ Configuration Register */ 108 109 struct tulip_eisa_softc { 110 struct tulip_softc sc_tulip; /* real Tulip softc */ 111 112 /* EISA-specific goo. */ 113 void *sc_ih; /* interrupt handle */ 114 }; 115 116 static int tlp_eisa_match(struct device *, struct cfdata *, void *); 117 static void tlp_eisa_attach(struct device *, struct device *, void *); 118 119 CFATTACH_DECL(tlp_eisa, sizeof(struct tulip_eisa_softc), 120 tlp_eisa_match, tlp_eisa_attach, NULL, NULL); 121 122 static const int tlp_eisa_irqs[] = { 5, 9, 10, 11 }; 123 124 static const struct tulip_eisa_product { 125 const char *tep_eisaid; /* EISA ID */ 126 const char *tep_name; /* device name */ 127 tulip_chip_t tep_chip; /* base Tulip chip type */ 128 } tlp_eisa_products[] = { 129 { "DEC4250", "DEC DE425", 130 TULIP_CHIP_DE425 }, 131 132 { NULL, NULL, 133 TULIP_CHIP_INVALID }, 134 }; 135 136 static const struct tulip_eisa_product * 137 tlp_eisa_lookup(const struct eisa_attach_args *ea) 138 { 139 const struct tulip_eisa_product *tep; 140 141 for (tep = tlp_eisa_products; 142 tep->tep_chip != TULIP_CHIP_INVALID; tep++) 143 if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0) 144 return (tep); 145 return (NULL); 146 } 147 148 static int 149 tlp_eisa_match(struct device *parent, struct cfdata *match, 150 void *aux) 151 { 152 struct eisa_attach_args *ea = aux; 153 154 if (tlp_eisa_lookup(ea) != NULL) 155 return (1); 156 157 return (0); 158 } 159 160 static void 161 tlp_eisa_attach(struct device *parent, struct device *self, void *aux) 162 { 163 static const u_int8_t testpat[] = 164 { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa }; 165 struct tulip_eisa_softc *esc = device_private(self); 166 struct tulip_softc *sc = &esc->sc_tulip; 167 struct eisa_attach_args *ea = aux; 168 eisa_chipset_tag_t ec = ea->ea_ec; 169 eisa_intr_handle_t ih; 170 bus_space_tag_t iot = ea->ea_iot; 171 bus_space_handle_t ioh; 172 const char *intrstr; 173 const struct tulip_eisa_product *tep; 174 u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)]; 175 u_int32_t val; 176 int irq, i, cnt; 177 178 /* 179 * Map the device. 180 */ 181 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot), 182 EISA_SLOT_SIZE, 0, &ioh)) { 183 printf(": unable to map I/O space\n"); 184 return; 185 } 186 187 sc->sc_st = iot; 188 sc->sc_sh = ioh; 189 190 tep = tlp_eisa_lookup(ea); 191 if (tep == NULL) { 192 printf("\n"); 193 panic("tlp_eisa_attach: impossible"); 194 } 195 sc->sc_chip = tep->tep_chip; 196 197 /* 198 * DE425's registers are 16 bytes long; the PCI configuration 199 * space registers are interleaved in the I/O space. 200 */ 201 sc->sc_regshift = 4; 202 203 /* 204 * No power management hooks. 205 */ 206 sc->sc_flags |= TULIPF_ENABLED; 207 208 /* 209 * CBIO must map the EISA slot, and I/O access and Bus Mastering 210 * must be enabled. 211 */ 212 bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot)); 213 bus_space_write_4(iot, ioh, DE425_CFCS, 214 bus_space_read_4(iot, ioh, DE425_CFCS) | 215 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE); 216 217 /* 218 * Get revision info. 219 */ 220 sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff; 221 222 printf(": %s Ethernet, pass %d.%d\n", 223 tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 224 225 sc->sc_dmat = ea->ea_dmat; 226 227 /* 228 * EISA doesn't have a cache line register. 229 */ 230 sc->sc_cacheline = 0; 231 232 /* 233 * Find the beginning of the Ethernet Address ROM. 234 */ 235 for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) { 236 tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 237 if (tmpbuf[i] == testpat[i]) 238 i++; 239 else 240 i = 0; 241 } 242 243 /* 244 * ...and now read the contents of the Ethernet Address ROM. 245 */ 246 sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK|M_ZERO); 247 for (i = 0; i < 32; i++) 248 sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 249 250 /* 251 * None of the DE425 boards have the new-style SROMs. 252 */ 253 if (tlp_parse_old_srom(sc, enaddr) == 0) { 254 printf("%s: unable to decode old-style SROM\n", 255 sc->sc_dev.dv_xname); 256 return; 257 } 258 259 /* 260 * All DE425 boards use the 21040 media switch. 261 */ 262 sc->sc_mediasw = &tlp_21040_mediasw; 263 264 /* 265 * Figure out which IRQ we want to use, and determine of it's 266 * edge- or level-triggered. 267 */ 268 val = bus_space_read_4(iot, ioh, DE425_CFG0); 269 irq = tlp_eisa_irqs[(val >> 1) & 0x03]; 270 271 /* 272 * Map and establish our interrupt. 273 */ 274 if (eisa_intr_map(ec, irq, &ih)) { 275 printf("%s: unable to map interrupt (%u)\n", 276 sc->sc_dev.dv_xname, irq); 277 return; 278 } 279 intrstr = eisa_intr_string(ec, ih); 280 esc->sc_ih = eisa_intr_establish(ec, ih, 281 (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc); 282 if (esc->sc_ih == NULL) { 283 printf("%s: unable to establish interrupt", 284 sc->sc_dev.dv_xname); 285 if (intrstr != NULL) 286 printf(" at %s", intrstr); 287 printf("\n"); 288 return; 289 } 290 if (intrstr != NULL) 291 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, 292 intrstr); 293 294 /* 295 * Finish off the attach. 296 */ 297 tlp_attach(sc, enaddr); 298 } 299