if_tlp_cardbus.c revision 1.3
1 /* $NetBSD: if_tlp_cardbus.c,v 1.3 1999/12/07 07:33:25 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 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 * CardBus bus front-end for the Digital Semiconductor ``Tulip'' (21x4x) 42 * Ethernet controller family driver. 43 * 44 * TODO: 45 * 46 * - power management 47 * - add support for the Xircom clone 48 */ 49 50 #include "opt_inet.h" 51 #include "opt_ns.h" 52 #include "bpfilter.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/mbuf.h> 57 #include <sys/malloc.h> 58 #include <sys/kernel.h> 59 #include <sys/socket.h> 60 #include <sys/ioctl.h> 61 #include <sys/errno.h> 62 #include <sys/device.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/pci/pcivar.h> 93 #include <dev/pci/pcireg.h> 94 #include <dev/pci/pcidevs.h> 95 96 #include <dev/cardbus/cardbusvar.h> 97 98 /* 99 * PCI configuration space registers used by the Tulip. 100 */ 101 #define TULIP_PCI_IOBA 0x10 /* i/o mapped base */ 102 #define TULIP_PCI_MMBA 0x14 /* memory mapped base */ 103 #define TULIP_PCI_CFDA 0x40 /* configuration driver area */ 104 105 #define CFDA_SLEEP 0x80000000 /* sleep mode */ 106 107 struct tulip_cardbus_softc { 108 struct tulip_softc sc_tulip; /* real Tulip softc */ 109 110 /* CardBus-specific goo. */ 111 void *sc_ih; /* interrupt handle */ 112 113 cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */ 114 int sc_intrline; /* our interrupt line */ 115 cardbustag_t sc_tag; 116 117 int sc_cbenable; /* what CardBus access type to enable */ 118 int sc_csr; /* CSR bits */ 119 }; 120 121 int tlp_cardbus_match __P((struct device *, struct cfdata *, void *)); 122 void tlp_cardbus_attach __P((struct device *, struct device *, void *)); 123 124 struct cfattach tlp_cardbus_ca = { 125 sizeof(struct tulip_cardbus_softc), 126 tlp_cardbus_match, tlp_cardbus_attach, 127 }; 128 129 const struct tulip_cardbus_product { 130 u_int32_t tcp_vendor; /* PCI vendor ID */ 131 u_int32_t tcp_product; /* PCI product ID */ 132 tulip_chip_t tcp_chip; /* base Tulip chip type */ 133 int tcp_pmreg; /* power management register offset */ 134 } tlp_cardbus_products[] = { 135 { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21142, 136 TULIP_CHIP_21142, 0xe0 }, 137 138 { 0, 0, 139 TULIP_CHIP_INVALID, 0 }, 140 }; 141 142 const char *tlp_cardbus_chip_names[] = TULIP_CHIP_NAMES; 143 144 const struct tulip_cardbus_product *tlp_cardbus_lookup 145 __P((const struct cardbus_attach_args *)); 146 147 const struct tulip_cardbus_product * 148 tlp_cardbus_lookup(ca) 149 const struct cardbus_attach_args *ca; 150 { 151 const struct tulip_cardbus_product *tcp; 152 153 for (tcp = tlp_cardbus_products; 154 tlp_cardbus_chip_names[tcp->tcp_chip] != NULL; 155 tcp++) { 156 if (PCI_VENDOR(ca->ca_id) == tcp->tcp_vendor && 157 PCI_PRODUCT(ca->ca_id) == tcp->tcp_product) 158 return (tcp); 159 } 160 return (NULL); 161 } 162 163 int 164 tlp_cardbus_match(parent, match, aux) 165 struct device *parent; 166 struct cfdata *match; 167 void *aux; 168 { 169 struct cardbus_attach_args *ca = aux; 170 171 if (tlp_cardbus_lookup(ca) != NULL) 172 return (1); 173 174 return (0); 175 } 176 177 void 178 tlp_cardbus_attach(parent, self, aux) 179 struct device *parent, *self; 180 void *aux; 181 { 182 struct tulip_cardbus_softc *csc = (void *) self; 183 struct tulip_softc *sc = &csc->sc_tulip; 184 struct cardbus_attach_args *ca = aux; 185 cardbus_devfunc_t ct = ca->ca_ct; 186 cardbus_chipset_tag_t cc = ct->ct_cc; 187 cardbus_function_tag_t cf = ct->ct_cf; 188 const struct tulip_cardbus_product *tcp; 189 u_int8_t enaddr[ETHER_ADDR_LEN]; 190 pcireg_t reg; 191 192 sc->sc_devno = ca->ca_device; 193 sc->sc_dmat = ca->ca_dmat; 194 csc->sc_ct = ct; 195 csc->sc_tag = ca->ca_tag; 196 csc->sc_intrline = ca->ca_intrline; 197 198 tcp = tlp_cardbus_lookup(ca); 199 if (tcp == NULL) { 200 printf("\n"); 201 panic("tlp_cardbus_attach: impossible"); 202 } 203 sc->sc_chip = tcp->tcp_chip; 204 205 /* 206 * By default, Tulip registers are 8 bytes long (4 bytes 207 * followed by a 4 byte pad). 208 */ 209 sc->sc_regshift = 3; 210 211 /* 212 * Get revision info, and set some chip-specific variables. 213 */ 214 sc->sc_rev = PCI_REVISION(ca->ca_class); 215 switch (sc->sc_chip) { 216 case TULIP_CHIP_21142: 217 if (sc->sc_rev >= 0x20) 218 sc->sc_chip = TULIP_CHIP_21143; 219 break; 220 221 default: 222 /* Nothing. */ 223 } 224 225 printf(": %s Ethernet, pass %d.%d\n", 226 tlp_cardbus_chip_names[sc->sc_chip], 227 (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 228 229 /* 230 * Check to see if the device is in power-save mode, and 231 * bring it out if necessary. 232 */ 233 switch (sc->sc_chip) { 234 case TULIP_CHIP_21142: 235 case TULIP_CHIP_21143: 236 /* 237 * Clear the "sleep mode" bit in the CFDA register. 238 */ 239 reg = cardbus_conf_read(cc, cf, ca->ca_tag, TULIP_PCI_CFDA); 240 if (reg & CFDA_SLEEP) 241 cardbus_conf_write(cc, cf, ca->ca_tag, TULIP_PCI_CFDA, 242 reg & ~CFDA_SLEEP); 243 break; 244 245 default: 246 /* Nothing. */ 247 } 248 249 /* 250 * Map the device. 251 */ 252 csc->sc_csr = PCI_COMMAND_MASTER_ENABLE; 253 if (Cardbus_mapreg_map(csc->sc_ct, TULIP_PCI_MMBA, 254 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 255 &sc->sc_st, &sc->sc_sh, NULL, NULL) == 0) { 256 csc->sc_cbenable = CARDBUS_MEM_ENABLE; 257 csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; 258 } else if (Cardbus_mapreg_map(csc->sc_ct, TULIP_PCI_IOBA, 259 PCI_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, NULL, NULL) == 0) { 260 csc->sc_cbenable = CARDBUS_IO_ENABLE; 261 csc->sc_csr |= PCI_COMMAND_IO_ENABLE; 262 } else { 263 printf("%s: unable to map device registers\n", 264 sc->sc_dev.dv_xname); 265 return; 266 } 267 268 /* Make sure the right access type is on the CardBus bridge. */ 269 (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cbenable); 270 271 /* Enable the appropriate bits in the PCI CSR. */ 272 reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG); 273 reg = (reg & ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE)) | 274 csc->sc_csr; 275 cardbus_conf_write(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG, reg); 276 277 /* 278 * Read the contents of the Ethernet Address ROM/SROM. Some 279 * chips have a 128 byte SROM (6 address bits), and some 280 * have a 512 byte SROM (8 address bits). 281 */ 282 sc->sc_srom_addrbits = 6; 283 try_again: 284 memset(sc->sc_srom, 0, sizeof(sc->sc_srom)); 285 tlp_read_srom(sc, 0, TULIP_ROM_SIZE(sc->sc_srom_addrbits) >> 1, 286 sc->sc_srom); 287 #if 0 288 { 289 int i; 290 291 printf("SROM CONTENTS:"); 292 for (i = 0; i < TULIP_ROM_SIZE(sc->sc_srom_addrbits); i++) { 293 if ((i % 8) == 0) 294 printf("\n\t"); 295 printf("0x%02x ", sc->sc_srom[i]); 296 } 297 printf("\n"); 298 } 299 #endif 300 301 /* 302 * Deal with chip/board quirks. This includes setting up 303 * the mediasw, and extracting the Ethernet address from 304 * the rombuf. 305 */ 306 switch (sc->sc_chip) { 307 case TULIP_CHIP_21142: 308 case TULIP_CHIP_21143: 309 /* Check for new format SROM. */ 310 if (tlp_isv_srom_enaddr(sc, enaddr) == 0) { 311 /* 312 * Not an ISV SROM; can't cope, for now. 313 */ 314 goto cant_cope; 315 } else { 316 /* 317 * We start out with the 2114x ISV media switch. 318 * When we search for quirks, we may change to 319 * a different switch. 320 */ 321 sc->sc_mediasw = &tlp_2114x_isv_mediasw; 322 } 323 324 /* 325 * Bail out now if we can't deal with this board. 326 */ 327 if (sc->sc_mediasw == NULL) 328 goto cant_cope; 329 break; 330 331 default: 332 cant_cope: 333 /* 334 * Try reading it again, with larger SROM 335 * size, if we haven't already. 336 */ 337 if (sc->sc_srom_addrbits != 8) { 338 sc->sc_srom_addrbits = 8; 339 goto try_again; 340 } 341 342 printf("%s: sorry, unable to handle your board\n", 343 sc->sc_dev.dv_xname); 344 return; 345 } 346 347 /* 348 * Map and establish the interrupt. 349 */ 350 csc->sc_ih = cardbus_intr_establish(cc, cf, ca->ca_intrline, IPL_NET, 351 tlp_intr, sc); 352 if (csc->sc_ih == NULL) { 353 printf("%s: unable to establish interrupt at %d\n", 354 sc->sc_dev.dv_xname, ca->ca_intrline); 355 return; 356 } 357 printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname, 358 ca->ca_intrline); 359 360 /* 361 * Finish off the attach. 362 */ 363 tlp_attach(sc, enaddr); 364 } 365
Indexes created Tue Sep 30 11:09:46 GMT 2025