if_ex_pci.c revision 1.40
1 /* $NetBSD: if_ex_pci.c,v 1.40 2005/12/11 12:22:49 christos 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 1.40 2005/12/11 12:22:49 christos 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[0x40>>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 static int ex_pci_match(struct device *, struct cfdata *, void *); 102 static void ex_pci_attach(struct device *, struct device *, void *); 103 static void ex_pci_intr_ack(struct ex_softc *); 104 105 static int ex_pci_enable(struct ex_softc *); 106 static void ex_pci_disable(struct ex_softc *); 107 108 static void ex_pci_confreg_restore(struct ex_pci_softc *); 109 static void ex_d3tod0( struct ex_softc *, struct pci_attach_args *); 110 111 CFATTACH_DECL(ex_pci, sizeof(struct ex_pci_softc), 112 ex_pci_match, ex_pci_attach, NULL, NULL); 113 114 static const struct ex_pci_product { 115 u_int32_t epp_prodid; /* PCI product ID */ 116 int epp_flags; /* initial softc flags */ 117 const char *epp_name; /* device name */ 118 } ex_pci_products[] = { 119 { PCI_PRODUCT_3COM_3C900TPO, 0, 120 "3c900-TPO Ethernet" }, 121 { PCI_PRODUCT_3COM_3C900COMBO, 0, 122 "3c900-COMBO Ethernet" }, 123 124 { PCI_PRODUCT_3COM_3C905TX, EX_CONF_MII, 125 "3c905-TX 10/100 Ethernet" }, 126 { PCI_PRODUCT_3COM_3C905T4, EX_CONF_MII, 127 "3c905-T4 10/100 Ethernet" }, 128 129 { PCI_PRODUCT_3COM_3C900BTPO, EX_CONF_90XB, 130 "3c900B-TPO Ethernet" }, 131 { PCI_PRODUCT_3COM_3C900BCOMBO, EX_CONF_90XB, 132 "3c900B-COMBO Ethernet" }, 133 { PCI_PRODUCT_3COM_3C900BTPC, EX_CONF_90XB, 134 "3c900B-TPC Ethernet" }, 135 136 { PCI_PRODUCT_3COM_3C905BTX, EX_CONF_90XB|EX_CONF_MII|EX_CONF_INTPHY, 137 "3c905B-TX 10/100 Ethernet" }, 138 { PCI_PRODUCT_3COM_3C905BT4, EX_CONF_90XB|EX_CONF_MII, 139 "3c905B-T4 10/100 Ethernet" }, 140 { PCI_PRODUCT_3COM_3C905BCOMBO, EX_CONF_90XB/*|EX_CONF_MII|EX_CONF_INTPHY*/, 141 "3c905B-COMBO 10/100 Ethernet" }, 142 { PCI_PRODUCT_3COM_3C905BFX, EX_CONF_90XB, 143 "3c905B-FX 10/100 Ethernet" }, 144 145 /* XXX Internal PHY? */ 146 { PCI_PRODUCT_3COM_3C980SRV, EX_CONF_90XB, 147 "3c980 Server Adapter 10/100 Ethernet" }, 148 { PCI_PRODUCT_3COM_3C980CTXM, EX_CONF_90XB|EX_CONF_MII, 149 "3c980C-TXM 10/100 Ethernet" }, 150 151 { PCI_PRODUCT_3COM_3C905CTX, EX_CONF_90XB|EX_CONF_MII, 152 "3c905C-TX 10/100 Ethernet with mngmt" }, 153 154 { PCI_PRODUCT_3COM_3C450TX, EX_CONF_90XB, 155 "3c450-TX 10/100 Ethernet" }, 156 157 { PCI_PRODUCT_3COM_3CSOHO100TX, EX_CONF_90XB, 158 "3cSOHO100-TX 10/100 Ethernet" }, 159 160 { PCI_PRODUCT_3COM_3C555, 161 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 162 EX_CONF_EEPROM_8BIT, 163 "3c555 MiniPCI 10/100 Ethernet" }, 164 165 { PCI_PRODUCT_3COM_3C556, 166 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 167 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 168 EX_CONF_PHY_POWER | EX_CONF_EEPROM_8BIT, 169 "3c556 MiniPCI 10/100 Ethernet" }, 170 171 { PCI_PRODUCT_3COM_3C556B, 172 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 173 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 174 EX_CONF_PHY_POWER | EX_CONF_NO_XCVR_PWR, 175 "3c556B MiniPCI 10/100 Ethernet" }, 176 177 { PCI_PRODUCT_3COM_3C905CXTX, EX_CONF_90XB|EX_CONF_MII, 178 "3c905CX-TX 10/100 Ethernet with mngmt" }, 179 180 { PCI_PRODUCT_3COM_3C920BEMBW, EX_CONF_90XB|EX_CONF_MII, 181 "3c920B-EMB-WNM Integrated Fast Ethernet" }, 182 183 { 0, 0, 184 NULL }, 185 }; 186 187 static const struct ex_pci_product * 188 ex_pci_lookup(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 static int 202 ex_pci_match(struct device *parent, struct cfdata *match, void *aux) 203 { 204 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 205 206 if (ex_pci_lookup(pa) != NULL) 207 return (2); /* beat ep_pci */ 208 209 return (0); 210 } 211 212 static void 213 ex_pci_attach(struct device *parent, struct device *self, void *aux) 214 { 215 struct ex_softc *sc = (void *)self; 216 struct ex_pci_softc *psc = (void *)self; 217 struct pci_attach_args *pa = aux; 218 pci_chipset_tag_t pc = pa->pa_pc; 219 pci_intr_handle_t ih; 220 const struct ex_pci_product *epp; 221 const char *intrstr = NULL; 222 int rev, pmreg; 223 pcireg_t reg; 224 225 aprint_naive(": Ethernet controller\n"); 226 227 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 228 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 229 aprint_error(": can't map i/o space\n"); 230 return; 231 } 232 233 epp = ex_pci_lookup(pa); 234 if (epp == NULL) { 235 printf("\n"); 236 panic("ex_pci_attach: impossible"); 237 } 238 239 rev = PCI_REVISION(pci_conf_read(pc, pa->pa_tag, PCI_CLASS_REG)); 240 aprint_normal(": 3Com %s (rev. 0x%x)\n", epp->epp_name, rev); 241 242 sc->sc_dmat = pa->pa_dmat; 243 244 sc->ex_bustype = EX_BUS_PCI; 245 sc->ex_conf = epp->epp_flags; 246 247 /* Enable the card. */ 248 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 249 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 250 PCI_COMMAND_MASTER_ENABLE); 251 252 psc->psc_pc = pc; 253 psc->psc_tag = pa->pa_tag; 254 psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] = 255 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 256 psc->psc_regs[PCI_BHLC_REG>>2] = 257 pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG); 258 psc->psc_regs[PCI_CBIO>>2] = 259 pci_conf_read(pc, pa->pa_tag, PCI_CBIO); 260 261 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) { 262 /* Map PCI function status window. */ 263 if (pci_mapreg_map(pa, PCI_FUNCMEM, PCI_MAPREG_TYPE_MEM, 0, 264 &psc->sc_funct, &psc->sc_funch, NULL, NULL)) { 265 aprint_error( 266 "%s: unable to map function status window\n", 267 sc->sc_dev.dv_xname); 268 return; 269 } 270 sc->intr_ack = ex_pci_intr_ack; 271 272 psc->psc_regs[PCI_FUNCMEM>>2] = 273 pci_conf_read(pc, pa->pa_tag, PCI_FUNCMEM); 274 } 275 276 psc->psc_regs[PCI_INTERRUPT_REG>>2] = 277 pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG); 278 279 /* Get it out of power save mode if needed (BIOS bugs) */ 280 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 281 sc->enable = ex_pci_enable; 282 sc->disable = ex_pci_disable; 283 284 psc->psc_pwrmgmt_csr_reg = pmreg + PCI_PMCSR; 285 reg = pci_conf_read(pc, pa->pa_tag, psc->psc_pwrmgmt_csr_reg); 286 287 psc->psc_pwrmgmt_csr = (reg & ~PCI_PMCSR_STATE_MASK) | 288 PCI_PMCSR_STATE_D0; 289 290 switch (reg & PCI_PMCSR_STATE_MASK) { 291 case PCI_PMCSR_STATE_D3: 292 aprint_normal("%s: found in power state D3, " 293 "attempting to recover.\n", sc->sc_dev.dv_xname); 294 ex_d3tod0(sc, pa); 295 aprint_normal("%s: changed power state to D0.\n", 296 sc->sc_dev.dv_xname); 297 break; 298 case PCI_PMCSR_STATE_D1: 299 case PCI_PMCSR_STATE_D2: 300 aprint_normal("%s: waking up from power state D%d\n", 301 sc->sc_dev.dv_xname, reg); 302 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 303 (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); 304 break; 305 } 306 } 307 308 sc->enabled = 1; 309 310 /* Map and establish the interrupt. */ 311 if (pci_intr_map(pa, &ih)) { 312 aprint_error("%s: couldn't map interrupt\n", 313 sc->sc_dev.dv_xname); 314 return; 315 } 316 317 intrstr = pci_intr_string(pc, ih); 318 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ex_intr, sc); 319 if (sc->sc_ih == NULL) { 320 aprint_error("%s: couldn't establish interrupt", 321 sc->sc_dev.dv_xname); 322 if (intrstr != NULL) 323 aprint_normal(" at %s", intrstr); 324 aprint_normal("\n"); 325 return; 326 } 327 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 328 329 ex_config(sc); 330 331 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 332 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 333 PCI_INTRACK); 334 335 if (sc->disable != NULL) 336 ex_disable(sc); 337 } 338 339 static void 340 ex_pci_intr_ack(struct ex_softc *sc) 341 { 342 struct ex_pci_softc *psc = (struct ex_pci_softc *)sc; 343 344 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 345 PCI_INTRACK); 346 } 347 348 static void 349 ex_d3tod0(struct ex_softc *sc, struct pci_attach_args *pa) 350 { 351 352 #define PCI_CACHE_LAT_BIST 0x0c 353 #define PCI_BAR0 0x10 354 #define PCI_BAR1 0x14 355 #define PCI_BAR2 0x18 356 #define PCI_BAR3 0x1C 357 #define PCI_BAR4 0x20 358 #define PCI_BAR5 0x24 359 #define PCI_EXP_ROM_BAR 0x30 360 #define PCI_INT_GNT_LAT 0x3c 361 362 pci_chipset_tag_t pc = pa->pa_pc; 363 364 u_int32_t base0; 365 u_int32_t base1; 366 u_int32_t romaddr; 367 u_int32_t pci_command; 368 u_int32_t pci_int_lat; 369 u_int32_t pci_cache_lat; 370 371 pci_command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 372 base0 = pci_conf_read(pc, pa->pa_tag, PCI_BAR0); 373 base1 = pci_conf_read(pc, pa->pa_tag, PCI_BAR1); 374 romaddr = pci_conf_read(pc, pa->pa_tag, PCI_EXP_ROM_BAR); 375 pci_cache_lat= pci_conf_read(pc, pa->pa_tag, PCI_CACHE_LAT_BIST); 376 pci_int_lat = pci_conf_read(pc, pa->pa_tag, PCI_INT_GNT_LAT); 377 378 pci_conf_write(pc, pa->pa_tag, PCI_POWERCTL, 0); 379 pci_conf_write(pc, pa->pa_tag, PCI_BAR0, base0); 380 pci_conf_write(pc, pa->pa_tag, PCI_BAR1, base1); 381 pci_conf_write(pc, pa->pa_tag, PCI_EXP_ROM_BAR, romaddr); 382 pci_conf_write(pc, pa->pa_tag, PCI_INT_GNT_LAT, pci_int_lat); 383 pci_conf_write(pc, pa->pa_tag, PCI_CACHE_LAT_BIST, pci_cache_lat); 384 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 385 (PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE)); 386 } 387 388 static void 389 ex_pci_confreg_restore(struct ex_pci_softc *psc) 390 { 391 struct ex_softc *sc = (void *) psc; 392 pcireg_t reg; 393 394 reg = pci_conf_read(psc->psc_pc, psc->psc_tag, PCI_COMMAND_STATUS_REG); 395 396 pci_conf_write(psc->psc_pc, psc->psc_tag, 397 PCI_COMMAND_STATUS_REG, 398 (reg & 0xffff0000) | 399 (psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] & 0xffff)); 400 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_BHLC_REG, 401 psc->psc_regs[PCI_BHLC_REG>>2]); 402 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_CBIO, 403 psc->psc_regs[PCI_CBIO>>2]); 404 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 405 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_FUNCMEM, 406 psc->psc_regs[PCI_FUNCMEM>>2]); 407 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_INTERRUPT_REG, 408 psc->psc_regs[PCI_INTERRUPT_REG>>2]); 409 } 410 411 static int 412 ex_pci_enable(struct ex_softc *sc) 413 { 414 struct ex_pci_softc *psc = (void *) sc; 415 416 #if 0 417 printf("%s: going to power state D0\n", sc->sc_dev.dv_xname); 418 #endif 419 420 /* Bring the device into D0 power state. */ 421 pci_conf_write(psc->psc_pc, psc->psc_tag, 422 psc->psc_pwrmgmt_csr_reg, psc->psc_pwrmgmt_csr); 423 424 /* Now restore the configuration registers. */ 425 ex_pci_confreg_restore(psc); 426 427 return (0); 428 } 429 430 static void 431 ex_pci_disable(struct ex_softc *sc) 432 { 433 struct ex_pci_softc *psc = (void *) sc; 434 435 #if 0 436 printf("%s: going to power state D3\n", sc->sc_dev.dv_xname); 437 #endif 438 439 /* Put the device into D3 state. */ 440 pci_conf_write(psc->psc_pc, psc->psc_tag, 441 psc->psc_pwrmgmt_csr_reg, (psc->psc_pwrmgmt_csr & 442 ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D3); 443 } 444
Indexes created Wed Sep 24 22:09:59 GMT 2025