1 /* $NetBSD: if_tlp_eisa.c,v 1.21 2008/04/28 20:23:48 martin 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * EISA bus front-end for the Digital Semiconductor ``Tulip'' (21x4x) 35 * Ethernet controller family driver. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: if_tlp_eisa.c,v 1.21 2008/04/28 20:23:48 martin Exp $"); 40 41 #include "opt_inet.h" 42 #include "bpfilter.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/malloc.h> 48 #include <sys/kernel.h> 49 #include <sys/socket.h> 50 #include <sys/ioctl.h> 51 #include <sys/errno.h> 52 #include <sys/device.h> 53 54 #include <machine/endian.h> 55 56 #include <net/if.h> 57 #include <net/if_dl.h> 58 #include <net/if_media.h> 59 #include <net/if_ether.h> 60 61 #if NBPFILTER > 0 62 #include <net/bpf.h> 63 #endif 64 65 #ifdef INET 66 #include <netinet/in.h> 67 #include <netinet/if_inarp.h> 68 #endif 69 70 71 #include <sys/bus.h> 72 #include <sys/intr.h> 73 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/mii_bitbang.h> 76 77 #include <dev/ic/tulipreg.h> 78 #include <dev/ic/tulipvar.h> 79 80 #include <dev/eisa/eisareg.h> 81 #include <dev/eisa/eisavar.h> 82 #include <dev/eisa/eisadevs.h> 83 84 #include <dev/pci/pcireg.h> 85 86 /* 87 * DE425 configuration registers; literal offsets from CSR base. 88 * This is effectively the 21040 PCI configuration space interleaved 89 * into the CSR space (CSRs are space 16 bytes on the DE425). 90 * 91 * What a cool address decoder hack they must have on that board... 92 */ 93 #define DE425_CFID 0x08 /* Configuration ID */ 94 #define DE425_CFCS 0x0c /* Configuration Command-Status */ 95 #define DE425_CFRV 0x18 /* Configuration Revision */ 96 #define DE425_CFLT 0x1c /* Configuration Latency Timer */ 97 #define DE425_CBIO 0x28 /* Configuration Base I/O Address */ 98 #define DE425_CFDA 0x2c /* Configuration Driver Area */ 99 #define DE425_ENETROM 0xc90 /* Offset in I/O space for ENETROM */ 100 #define DE425_CFG0 0xc88 /* IRQ Configuration Register */ 101 102 struct tulip_eisa_softc { 103 struct tulip_softc sc_tulip; /* real Tulip softc */ 104 105 /* EISA-specific goo. */ 106 void *sc_ih; /* interrupt handle */ 107 }; 108 109 static int tlp_eisa_match(struct device *, struct cfdata *, void *); 110 static void tlp_eisa_attach(struct device *, struct device *, void *); 111 112 CFATTACH_DECL(tlp_eisa, sizeof(struct tulip_eisa_softc), 113 tlp_eisa_match, tlp_eisa_attach, NULL, NULL); 114 115 static const int tlp_eisa_irqs[] = { 5, 9, 10, 11 }; 116 117 static const struct tulip_eisa_product { 118 const char *tep_eisaid; /* EISA ID */ 119 const char *tep_name; /* device name */ 120 tulip_chip_t tep_chip; /* base Tulip chip type */ 121 } tlp_eisa_products[] = { 122 { "DEC4250", "DEC DE425", 123 TULIP_CHIP_DE425 }, 124 125 { NULL, NULL, 126 TULIP_CHIP_INVALID }, 127 }; 128 129 static const struct tulip_eisa_product * 130 tlp_eisa_lookup(const struct eisa_attach_args *ea) 131 { 132 const struct tulip_eisa_product *tep; 133 134 for (tep = tlp_eisa_products; 135 tep->tep_chip != TULIP_CHIP_INVALID; tep++) 136 if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0) 137 return (tep); 138 return (NULL); 139 } 140 141 static int 142 tlp_eisa_match(struct device *parent, struct cfdata *match, 143 void *aux) 144 { 145 struct eisa_attach_args *ea = aux; 146 147 if (tlp_eisa_lookup(ea) != NULL) 148 return (1); 149 150 return (0); 151 } 152 153 static void 154 tlp_eisa_attach(struct device *parent, struct device *self, void *aux) 155 { 156 static const u_int8_t testpat[] = 157 { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa }; 158 struct tulip_eisa_softc *esc = device_private(self); 159 struct tulip_softc *sc = &esc->sc_tulip; 160 struct eisa_attach_args *ea = aux; 161 eisa_chipset_tag_t ec = ea->ea_ec; 162 eisa_intr_handle_t ih; 163 bus_space_tag_t iot = ea->ea_iot; 164 bus_space_handle_t ioh; 165 const char *intrstr; 166 const struct tulip_eisa_product *tep; 167 u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)]; 168 u_int32_t val; 169 int irq, i, cnt; 170 171 /* 172 * Map the device. 173 */ 174 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot), 175 EISA_SLOT_SIZE, 0, &ioh)) { 176 printf(": unable to map I/O space\n"); 177 return; 178 } 179 180 sc->sc_st = iot; 181 sc->sc_sh = ioh; 182 183 tep = tlp_eisa_lookup(ea); 184 if (tep == NULL) { 185 printf("\n"); 186 panic("tlp_eisa_attach: impossible"); 187 } 188 sc->sc_chip = tep->tep_chip; 189 190 /* 191 * DE425's registers are 16 bytes long; the PCI configuration 192 * space registers are interleaved in the I/O space. 193 */ 194 sc->sc_regshift = 4; 195 196 /* 197 * No power management hooks. 198 */ 199 sc->sc_flags |= TULIPF_ENABLED; 200 201 /* 202 * CBIO must map the EISA slot, and I/O access and Bus Mastering 203 * must be enabled. 204 */ 205 bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot)); 206 bus_space_write_4(iot, ioh, DE425_CFCS, 207 bus_space_read_4(iot, ioh, DE425_CFCS) | 208 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE); 209 210 /* 211 * Get revision info. 212 */ 213 sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff; 214 215 printf(": %s Ethernet, pass %d.%d\n", 216 tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 217 218 sc->sc_dmat = ea->ea_dmat; 219 220 /* 221 * EISA doesn't have a cache line register. 222 */ 223 sc->sc_cacheline = 0; 224 225 /* 226 * Find the beginning of the Ethernet Address ROM. 227 */ 228 for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) { 229 tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 230 if (tmpbuf[i] == testpat[i]) 231 i++; 232 else 233 i = 0; 234 } 235 236 /* 237 * ...and now read the contents of the Ethernet Address ROM. 238 */ 239 sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK|M_ZERO); 240 for (i = 0; i < 32; i++) 241 sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM); 242 243 /* 244 * None of the DE425 boards have the new-style SROMs. 245 */ 246 if (tlp_parse_old_srom(sc, enaddr) == 0) { 247 aprint_error_dev(&sc->sc_dev, "unable to decode old-style SROM\n"); 248 return; 249 } 250 251 /* 252 * All DE425 boards use the 21040 media switch. 253 */ 254 sc->sc_mediasw = &tlp_21040_mediasw; 255 256 /* 257 * Figure out which IRQ we want to use, and determine of it's 258 * edge- or level-triggered. 259 */ 260 val = bus_space_read_4(iot, ioh, DE425_CFG0); 261 irq = tlp_eisa_irqs[(val >> 1) & 0x03]; 262 263 /* 264 * Map and establish our interrupt. 265 */ 266 if (eisa_intr_map(ec, irq, &ih)) { 267 aprint_error_dev(&sc->sc_dev, "unable to map interrupt (%u)\n", 268 irq); 269 return; 270 } 271 intrstr = eisa_intr_string(ec, ih); 272 esc->sc_ih = eisa_intr_establish(ec, ih, 273 (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc); 274 if (esc->sc_ih == NULL) { 275 aprint_error_dev(&sc->sc_dev, "unable to establish interrupt"); 276 if (intrstr != NULL) 277 printf(" at %s", intrstr); 278 printf("\n"); 279 return; 280 } 281 if (intrstr != NULL) 282 printf("%s: interrupting at %s\n", device_xname(&sc->sc_dev), 283 intrstr); 284 285 /* 286 * Finish off the attach. 287 */ 288 tlp_attach(sc, enaddr); 289 } 290