if_ex_pci.c revision 1.31
1 /* $NetBSD: if_ex_pci.c,v 1.31 2003/01/16 01:02:06 gendalia Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden; Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, 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 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_ex_pci.c,v 1.31 2003/01/16 01:02:06 gendalia Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/mbuf.h> 46 #include <sys/socket.h> 47 #include <sys/ioctl.h> 48 #include <sys/errno.h> 49 #include <sys/syslog.h> 50 #include <sys/select.h> 51 #include <sys/device.h> 52 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 58 #include <machine/cpu.h> 59 #include <machine/bus.h> 60 #include <machine/intr.h> 61 62 #include <dev/mii/miivar.h> 63 #include <dev/mii/mii.h> 64 65 #include <dev/ic/elink3var.h> 66 #include <dev/ic/elink3reg.h> 67 #include <dev/ic/elinkxlreg.h> 68 #include <dev/ic/elinkxlvar.h> 69 70 #include <dev/pci/pcivar.h> 71 #include <dev/pci/pcireg.h> 72 #include <dev/pci/pcidevs.h> 73 74 struct ex_pci_softc { 75 struct ex_softc sc_ex; 76 77 /* PCI function status space. 556,556B requests it. */ 78 bus_space_tag_t sc_funct; 79 bus_space_handle_t sc_funch; 80 81 pci_chipset_tag_t psc_pc; /* pci chipset tag */ 82 pcireg_t psc_regs[0x20>>2]; /* saved PCI config regs (sparse) */ 83 pcitag_t psc_tag; /* pci device tag */ 84 85 int psc_pwrmgmt_csr_reg; /* ACPI power management register */ 86 pcireg_t psc_pwrmgmt_csr; /* ...and the contents at D0 */ 87 }; 88 89 /* 90 * PCI constants. 91 * XXX These should be in a common file! 92 */ 93 #define PCI_CONN 0x48 /* Connector type */ 94 #define PCI_CBIO 0x10 /* Configuration Base IO Address */ 95 #define PCI_POWERCTL 0xe0 96 #define PCI_FUNCMEM 0x18 97 98 #define PCI_INTR 4 99 #define PCI_INTRACK 0x00008000 100 101 int ex_pci_match __P((struct device *, struct cfdata *, void *)); 102 void ex_pci_attach __P((struct device *, struct device *, void *)); 103 void ex_pci_intr_ack __P((struct ex_softc *)); 104 105 int ex_pci_enable __P((struct ex_softc *)); 106 void ex_pci_disable __P((struct ex_softc *)); 107 108 void ex_pci_confreg_restore __P((struct ex_pci_softc *)); 109 110 CFATTACH_DECL(ex_pci, sizeof(struct ex_pci_softc), 111 ex_pci_match, ex_pci_attach, NULL, NULL); 112 113 const struct ex_pci_product { 114 u_int32_t epp_prodid; /* PCI product ID */ 115 int epp_flags; /* initial softc flags */ 116 const char *epp_name; /* device name */ 117 } ex_pci_products[] = { 118 { PCI_PRODUCT_3COM_3C900TPO, 0, 119 "3c900-TPO Ethernet" }, 120 { PCI_PRODUCT_3COM_3C900COMBO, 0, 121 "3c900-COMBO Ethernet" }, 122 123 { PCI_PRODUCT_3COM_3C905TX, EX_CONF_MII, 124 "3c905-TX 10/100 Ethernet" }, 125 { PCI_PRODUCT_3COM_3C905T4, EX_CONF_MII, 126 "3c905-T4 10/100 Ethernet" }, 127 128 { PCI_PRODUCT_3COM_3C900BTPO, EX_CONF_90XB, 129 "3c900B-TPO Ethernet" }, 130 { PCI_PRODUCT_3COM_3C900BCOMBO, EX_CONF_90XB, 131 "3c900B-COMBO Ethernet" }, 132 { PCI_PRODUCT_3COM_3C900BTPC, EX_CONF_90XB, 133 "3c900B-TPC Ethernet" }, 134 135 { PCI_PRODUCT_3COM_3C905BTX, EX_CONF_90XB|EX_CONF_MII|EX_CONF_INTPHY, 136 "3c905B-TX 10/100 Ethernet" }, 137 { PCI_PRODUCT_3COM_3C905BT4, EX_CONF_90XB|EX_CONF_MII, 138 "3c905B-T4 10/100 Ethernet" }, 139 { PCI_PRODUCT_3COM_3C905BCOMBO, EX_CONF_90XB/*|EX_CONF_MII|EX_CONF_INTPHY*/, 140 "3c905B-COMBO 10/100 Ethernet" }, 141 { PCI_PRODUCT_3COM_3C905BFX, EX_CONF_90XB, 142 "3c905B-FX 10/100 Ethernet" }, 143 144 /* XXX Internal PHY? */ 145 { PCI_PRODUCT_3COM_3C980SRV, EX_CONF_90XB, 146 "3c980 Server Adapter 10/100 Ethernet" }, 147 { PCI_PRODUCT_3COM_3C980CTXM, EX_CONF_90XB|EX_CONF_MII, 148 "3c980C-TXM 10/100 Ethernet" }, 149 150 { PCI_PRODUCT_3COM_3C905CTX, EX_CONF_90XB|EX_CONF_MII, 151 "3c905C-TX 10/100 Ethernet with mngmt" }, 152 153 { PCI_PRODUCT_3COM_3C450TX, EX_CONF_90XB, 154 "3c450-TX 10/100 Ethernet" }, 155 156 { PCI_PRODUCT_3COM_3CSOHO100TX, EX_CONF_90XB, 157 "3cSOHO100-TX 10/100 Ethernet" }, 158 159 { PCI_PRODUCT_3COM_3C555, 160 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 161 EX_CONF_EEPROM_8BIT, 162 "3c555 MiniPCI 10/100 Ethernet" }, 163 164 { PCI_PRODUCT_3COM_3C556, 165 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 166 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 167 EX_CONF_PHY_POWER | EX_CONF_EEPROM_8BIT, 168 "3c556 MiniPCI 10/100 Ethernet" }, 169 170 { PCI_PRODUCT_3COM_3C556B, 171 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 172 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 173 EX_CONF_PHY_POWER, 174 "3c556B MiniPCI 10/100 Ethernet" }, 175 176 { PCI_PRODUCT_3COM_3C905CXTX, EX_CONF_90XB|EX_CONF_MII, 177 "3c905CX-TX 10/100 Ethernet with mngmt" }, 178 179 { 0, 0, 180 NULL }, 181 }; 182 183 const struct ex_pci_product *ex_pci_lookup 184 __P((const struct pci_attach_args *)); 185 186 const struct ex_pci_product * 187 ex_pci_lookup(pa) 188 const struct pci_attach_args *pa; 189 { 190 const struct ex_pci_product *epp; 191 192 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_3COM) 193 return (NULL); 194 195 for (epp = ex_pci_products; epp->epp_name != NULL; epp++) 196 if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid) 197 return (epp); 198 return (NULL); 199 } 200 201 int 202 ex_pci_match(parent, match, aux) 203 struct device *parent; 204 struct cfdata *match; 205 void *aux; 206 { 207 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 208 209 if (ex_pci_lookup(pa) != NULL) 210 return (2); /* beat ep_pci */ 211 212 return (0); 213 } 214 215 void 216 ex_pci_attach(parent, self, aux) 217 struct device *parent, *self; 218 void *aux; 219 { 220 struct ex_softc *sc = (void *)self; 221 struct ex_pci_softc *psc = (void *)self; 222 struct pci_attach_args *pa = aux; 223 pci_chipset_tag_t pc = pa->pa_pc; 224 pci_intr_handle_t ih; 225 const struct ex_pci_product *epp; 226 const char *intrstr = NULL; 227 int rev, pmreg; 228 pcireg_t reg; 229 230 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 231 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 232 printf(": can't map i/o space\n"); 233 return; 234 } 235 236 epp = ex_pci_lookup(pa); 237 if (epp == NULL) { 238 printf("\n"); 239 panic("ex_pci_attach: impossible"); 240 } 241 242 rev = PCI_REVISION(pci_conf_read(pc, pa->pa_tag, PCI_CLASS_REG)); 243 printf(": 3Com %s (rev. 0x%x)\n", epp->epp_name, rev); 244 245 sc->sc_dmat = pa->pa_dmat; 246 247 sc->ex_bustype = EX_BUS_PCI; 248 sc->ex_conf = epp->epp_flags; 249 250 /* Enable the card. */ 251 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 252 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 253 PCI_COMMAND_MASTER_ENABLE); 254 255 psc->psc_pc = pc; 256 psc->psc_tag = pa->pa_tag; 257 psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] = 258 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 259 psc->psc_regs[PCI_BHLC_REG>>2] = 260 pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG); 261 psc->psc_regs[PCI_CBIO>>2] = 262 pci_conf_read(pc, pa->pa_tag, PCI_CBIO); 263 264 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) { 265 /* Map PCI function status window. */ 266 if (pci_mapreg_map(pa, PCI_FUNCMEM, PCI_MAPREG_TYPE_MEM, 0, 267 &psc->sc_funct, &psc->sc_funch, NULL, NULL)) { 268 printf("%s: unable to map function status window\n", 269 sc->sc_dev.dv_xname); 270 return; 271 } 272 sc->intr_ack = ex_pci_intr_ack; 273 274 psc->psc_regs[PCI_FUNCMEM>>2] = 275 pci_conf_read(pc, pa->pa_tag, PCI_FUNCMEM); 276 } 277 278 psc->psc_regs[PCI_INTERRUPT_REG>>2] = 279 pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG); 280 281 /* Get it out of power save mode if needed (BIOS bugs) */ 282 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 283 sc->enable = ex_pci_enable; 284 sc->disable = ex_pci_disable; 285 286 psc->psc_pwrmgmt_csr_reg = pmreg + PCI_PMCSR; 287 reg = pci_conf_read(pc, pa->pa_tag, psc->psc_pwrmgmt_csr_reg); 288 289 psc->psc_pwrmgmt_csr = (reg & ~PCI_PMCSR_STATE_MASK) | 290 PCI_PMCSR_STATE_D0; 291 292 switch (reg & PCI_PMCSR_STATE_MASK) { 293 case PCI_PMCSR_STATE_D3: 294 /* 295 * The card has lost all configuration data in 296 * this state, so punt. 297 */ 298 printf("%s: unable to wake up from power state D3\n", 299 sc->sc_dev.dv_xname); 300 return; 301 case PCI_PMCSR_STATE_D1: 302 case PCI_PMCSR_STATE_D2: 303 printf("%s: waking up from power state D%d\n", 304 sc->sc_dev.dv_xname, reg); 305 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 306 (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); 307 break; 308 } 309 } 310 311 sc->enabled = 1; 312 313 /* Map and establish the interrupt. */ 314 if (pci_intr_map(pa, &ih)) { 315 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 316 return; 317 } 318 319 intrstr = pci_intr_string(pc, ih); 320 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ex_intr, sc); 321 if (sc->sc_ih == NULL) { 322 printf("%s: couldn't establish interrupt", 323 sc->sc_dev.dv_xname); 324 if (intrstr != NULL) 325 printf(" at %s", intrstr); 326 printf("\n"); 327 return; 328 } 329 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 330 331 ex_config(sc); 332 333 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 334 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 335 PCI_INTRACK); 336 337 if (sc->disable != NULL) 338 ex_disable(sc); 339 } 340 341 void 342 ex_pci_intr_ack(sc) 343 struct ex_softc *sc; 344 { 345 struct ex_pci_softc *psc = (struct ex_pci_softc *)sc; 346 347 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 348 PCI_INTRACK); 349 } 350 351 void 352 ex_pci_confreg_restore(psc) 353 struct ex_pci_softc *psc; 354 { 355 struct ex_softc *sc = (void *) psc; 356 pcireg_t reg; 357 358 reg = pci_conf_read(psc->psc_pc, psc->psc_tag, PCI_COMMAND_STATUS_REG); 359 360 pci_conf_write(psc->psc_pc, psc->psc_tag, 361 PCI_COMMAND_STATUS_REG, 362 (reg & 0xffff0000) | 363 (psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] & 0xffff)); 364 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_BHLC_REG, 365 psc->psc_regs[PCI_BHLC_REG>>2]); 366 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_CBIO, 367 psc->psc_regs[PCI_CBIO>>2]); 368 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 369 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_FUNCMEM, 370 psc->psc_regs[PCI_FUNCMEM>>2]); 371 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_INTERRUPT_REG, 372 psc->psc_regs[PCI_INTERRUPT_REG>>2]); 373 } 374 375 int 376 ex_pci_enable(sc) 377 struct ex_softc *sc; 378 { 379 struct ex_pci_softc *psc = (void *) sc; 380 381 #if 0 382 printf("%s: going to power state D0\n", sc->sc_dev.dv_xname); 383 #endif 384 385 /* Bring the device into D0 power state. */ 386 pci_conf_write(psc->psc_pc, psc->psc_tag, 387 psc->psc_pwrmgmt_csr_reg, psc->psc_pwrmgmt_csr); 388 389 /* Now restore the configuration registers. */ 390 ex_pci_confreg_restore(psc); 391 392 return (0); 393 } 394 395 void 396 ex_pci_disable(sc) 397 struct ex_softc *sc; 398 { 399 struct ex_pci_softc *psc = (void *) sc; 400 401 #if 0 402 printf("%s: going to power state D3\n", sc->sc_dev.dv_xname); 403 #endif 404 405 /* Put the device into D3 state. */ 406 pci_conf_write(psc->psc_pc, psc->psc_tag, 407 psc->psc_pwrmgmt_csr_reg, (psc->psc_pwrmgmt_csr & 408 ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D3); 409 } 410
Indexes created Thu Sep 25 02:09:54 GMT 2025