1 /* $NetBSD: if_ex_pci.c,v 1.58 2018/12/09 11:14:02 jdolecek 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 * 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 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_ex_pci.c,v 1.58 2018/12/09 11:14:02 jdolecek Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/mbuf.h> 39 #include <sys/socket.h> 40 #include <sys/ioctl.h> 41 #include <sys/errno.h> 42 #include <sys/syslog.h> 43 #include <sys/select.h> 44 #include <sys/device.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 51 #include <sys/cpu.h> 52 #include <sys/bus.h> 53 #include <sys/intr.h> 54 55 #include <dev/mii/miivar.h> 56 #include <dev/mii/mii.h> 57 58 #include <dev/ic/elink3var.h> 59 #include <dev/ic/elink3reg.h> 60 #include <dev/ic/elinkxlreg.h> 61 #include <dev/ic/elinkxlvar.h> 62 63 #include <dev/pci/pcivar.h> 64 #include <dev/pci/pcireg.h> 65 #include <dev/pci/pcidevs.h> 66 67 struct ex_pci_softc { 68 struct ex_softc sc_ex; 69 70 /* PCI function status space. 556,556B requests it. */ 71 bus_space_tag_t sc_funct; 72 bus_space_handle_t sc_funch; 73 74 pci_chipset_tag_t psc_pc; /* pci chipset tag */ 75 pcireg_t psc_regs[0x40>>2]; /* saved PCI config regs (sparse) */ 76 pcitag_t psc_tag; /* pci device tag */ 77 }; 78 79 /* 80 * PCI constants. 81 * XXX These should be in a common file! 82 */ 83 #define PCI_CONN 0x48 /* Connector type */ 84 #define PCI_CBIO PCI_BAR(0) /* Configuration Base IO Address */ 85 #define PCI_POWERCTL 0xe0 86 #define PCI_FUNCMEM PCI_BAR(2) 87 88 #define PCI_INTR 4 89 #define PCI_INTRACK 0x00008000 90 91 static int ex_pci_match(device_t, cfdata_t, void *); 92 static void ex_pci_attach(device_t, device_t, void *); 93 static void ex_pci_intr_ack(struct ex_softc *); 94 95 static int ex_pci_enable(struct ex_softc *); 96 97 static void ex_pci_confreg_restore(struct ex_pci_softc *); 98 static int ex_d3tod0(pci_chipset_tag_t, pcitag_t, device_t, pcireg_t); 99 100 CFATTACH_DECL_NEW(ex_pci, sizeof(struct ex_pci_softc), 101 ex_pci_match, ex_pci_attach, NULL, NULL); 102 103 static const struct ex_pci_product { 104 uint32_t epp_prodid; /* PCI product ID */ 105 int epp_flags; /* initial softc flags */ 106 const char *epp_name; /* device name */ 107 } ex_pci_products[] = { 108 { PCI_PRODUCT_3COM_3C900TPO, 0, 109 "3c900-TPO Ethernet" }, 110 { PCI_PRODUCT_3COM_3C900COMBO, 0, 111 "3c900-COMBO Ethernet" }, 112 113 { PCI_PRODUCT_3COM_3C905TX, EX_CONF_MII, 114 "3c905-TX 10/100 Ethernet" }, 115 { PCI_PRODUCT_3COM_3C905T4, EX_CONF_MII, 116 "3c905-T4 10/100 Ethernet" }, 117 118 { PCI_PRODUCT_3COM_3C900BTPO, EX_CONF_90XB, 119 "3c900B-TPO Ethernet" }, 120 { PCI_PRODUCT_3COM_3C900BCOMBO, EX_CONF_90XB, 121 "3c900B-COMBO Ethernet" }, 122 { PCI_PRODUCT_3COM_3C900BTPC, EX_CONF_90XB, 123 "3c900B-TPC Ethernet" }, 124 125 { PCI_PRODUCT_3COM_3C905BTX, EX_CONF_90XB|EX_CONF_MII|EX_CONF_INTPHY, 126 "3c905B-TX 10/100 Ethernet" }, 127 { PCI_PRODUCT_3COM_3C905BT4, EX_CONF_90XB|EX_CONF_MII, 128 "3c905B-T4 10/100 Ethernet" }, 129 { PCI_PRODUCT_3COM_3C905BCOMBO, EX_CONF_90XB/*|EX_CONF_MII|EX_CONF_INTPHY*/, 130 "3c905B-COMBO 10/100 Ethernet" }, 131 { PCI_PRODUCT_3COM_3C905BFX, EX_CONF_90XB, 132 "3c905B-FX 10/100 Ethernet" }, 133 134 /* XXX Internal PHY? */ 135 { PCI_PRODUCT_3COM_3C980SRV, EX_CONF_90XB, 136 "3c980 Server Adapter 10/100 Ethernet" }, 137 { PCI_PRODUCT_3COM_3C980CTXM, EX_CONF_90XB|EX_CONF_MII, 138 "3c980C-TXM 10/100 Ethernet" }, 139 140 { PCI_PRODUCT_3COM_3C905CTX, EX_CONF_90XB|EX_CONF_MII, 141 "3c905C-TX 10/100 Ethernet with mngmt" }, 142 143 { PCI_PRODUCT_3COM_3C450TX, EX_CONF_90XB, 144 "3c450-TX 10/100 Ethernet" }, 145 146 { PCI_PRODUCT_3COM_3CSOHO100TX, EX_CONF_90XB, 147 "3cSOHO100-TX 10/100 Ethernet" }, 148 149 { PCI_PRODUCT_3COM_3C555, 150 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 151 EX_CONF_EEPROM_8BIT, 152 "3c555 MiniPCI 10/100 Ethernet" }, 153 154 { PCI_PRODUCT_3COM_3C556, 155 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 156 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 157 EX_CONF_PHY_POWER | EX_CONF_EEPROM_8BIT, 158 "3c556 MiniPCI 10/100 Ethernet" }, 159 160 { PCI_PRODUCT_3COM_3C556B, 161 EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF | 162 EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY | 163 EX_CONF_PHY_POWER | EX_CONF_NO_XCVR_PWR, 164 "3c556B MiniPCI 10/100 Ethernet" }, 165 166 { PCI_PRODUCT_3COM_3C905CXTX, EX_CONF_90XB|EX_CONF_MII, 167 "3c905CX-TX 10/100 Ethernet with mngmt" }, 168 169 { PCI_PRODUCT_3COM_3C920BEMBW, EX_CONF_90XB|EX_CONF_MII, 170 "3c920B-EMB-WNM Integrated Fast Ethernet" }, 171 172 { 0, 0, 173 NULL }, 174 }; 175 176 static const struct ex_pci_product * 177 ex_pci_lookup(const struct pci_attach_args *pa) 178 { 179 const struct ex_pci_product *epp; 180 181 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_3COM) 182 return (NULL); 183 184 for (epp = ex_pci_products; epp->epp_name != NULL; epp++) 185 if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid) 186 return (epp); 187 return (NULL); 188 } 189 190 static int 191 ex_pci_match(device_t parent, cfdata_t match, 192 void *aux) 193 { 194 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 195 196 if (ex_pci_lookup(pa) != NULL) 197 return (2); /* beat ep_pci */ 198 199 return (0); 200 } 201 202 static void 203 ex_pci_attach(device_t parent, device_t self, void *aux) 204 { 205 struct ex_pci_softc *psc = device_private(self); 206 struct ex_softc *sc = &psc->sc_ex; 207 struct pci_attach_args *pa = aux; 208 pci_chipset_tag_t pc = pa->pa_pc; 209 pci_intr_handle_t ih; 210 const struct ex_pci_product *epp; 211 const char *intrstr = NULL; 212 int rev; 213 int error; 214 char intrbuf[PCI_INTRSTR_LEN]; 215 216 aprint_naive(": Ethernet controller\n"); 217 218 sc->sc_dev = self; 219 220 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 221 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 222 aprint_error(": can't map i/o space\n"); 223 return; 224 } 225 226 epp = ex_pci_lookup(pa); 227 if (epp == NULL) { 228 printf("\n"); 229 panic("ex_pci_attach: impossible"); 230 } 231 232 rev = PCI_REVISION(pci_conf_read(pc, pa->pa_tag, PCI_CLASS_REG)); 233 aprint_normal(": 3Com %s (rev. 0x%x)\n", epp->epp_name, rev); 234 235 sc->sc_dmat = pa->pa_dmat; 236 237 sc->ex_conf = epp->epp_flags; 238 239 /* Enable the card. */ 240 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 241 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 242 PCI_COMMAND_MASTER_ENABLE); 243 244 psc->psc_pc = pc; 245 psc->psc_tag = pa->pa_tag; 246 psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] = 247 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 248 psc->psc_regs[PCI_BHLC_REG>>2] = 249 pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG); 250 psc->psc_regs[PCI_CBIO>>2] = 251 pci_conf_read(pc, pa->pa_tag, PCI_CBIO); 252 253 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) { 254 /* Map PCI function status window. */ 255 if (pci_mapreg_map(pa, PCI_FUNCMEM, PCI_MAPREG_TYPE_MEM, 0, 256 &psc->sc_funct, &psc->sc_funch, NULL, NULL)) { 257 aprint_error_dev(self, 258 "unable to map function status window\n"); 259 return; 260 } 261 sc->intr_ack = ex_pci_intr_ack; 262 263 psc->psc_regs[PCI_FUNCMEM>>2] = 264 pci_conf_read(pc, pa->pa_tag, PCI_FUNCMEM); 265 } 266 267 psc->psc_regs[PCI_INTERRUPT_REG>>2] = 268 pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG); 269 /* power up chip */ 270 error = pci_activate(pa->pa_pc, pa->pa_tag, self, ex_d3tod0); 271 switch (error) { 272 case EOPNOTSUPP: 273 break; 274 case 0: 275 sc->enable = ex_pci_enable; 276 sc->disable = NULL; 277 break; 278 default: 279 aprint_error_dev(self, "cannot activate %d\n", error); 280 return; 281 } 282 sc->enabled = 1; 283 284 /* Map and establish the interrupt. */ 285 if (pci_intr_map(pa, &ih)) { 286 aprint_error_dev(self, "couldn't map interrupt\n"); 287 return; 288 } 289 290 intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); 291 sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_NET, ex_intr, sc, 292 device_xname(self)); 293 if (sc->sc_ih == NULL) { 294 aprint_error_dev(self, "couldn't establish interrupt"); 295 if (intrstr != NULL) 296 aprint_error(" at %s", intrstr); 297 aprint_error("\n"); 298 return; 299 } 300 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 301 302 ex_config(sc); 303 304 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 305 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 306 PCI_INTRACK); 307 308 if (sc->disable != NULL) 309 ex_disable(sc); 310 } 311 312 static void 313 ex_pci_intr_ack(struct ex_softc *sc) 314 { 315 struct ex_pci_softc *psc = (struct ex_pci_softc *)sc; 316 317 bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR, 318 PCI_INTRACK); 319 } 320 321 static int 322 ex_d3tod0(pci_chipset_tag_t pc, pcitag_t tag, device_t self, pcireg_t state) 323 { 324 325 #define PCI_CACHE_LAT_BIST 0x0c 326 #define PCI_EXP_ROM_BAR 0x30 327 #define PCI_INT_GNT_LAT 0x3c 328 329 uint32_t base0; 330 uint32_t base1; 331 uint32_t romaddr; 332 uint32_t pci_int_lat; 333 uint32_t pci_cache_lat; 334 335 if (state != PCI_PMCSR_STATE_D3) 336 return 0; 337 338 aprint_normal_dev(self, "found in power state D%d, " 339 "attempting to recover.\n", state); 340 /* XXX is this needed? */ 341 (void)pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 342 base0 = pci_conf_read(pc, tag, PCI_BAR0); 343 base1 = pci_conf_read(pc, tag, PCI_BAR1); 344 romaddr = pci_conf_read(pc, tag, PCI_EXP_ROM_BAR); 345 pci_cache_lat= pci_conf_read(pc, tag, PCI_CACHE_LAT_BIST); 346 pci_int_lat = pci_conf_read(pc, tag, PCI_INT_GNT_LAT); 347 348 pci_conf_write(pc, tag, PCI_POWERCTL, 0); 349 pci_conf_write(pc, tag, PCI_BAR0, base0); 350 pci_conf_write(pc, tag, PCI_BAR1, base1); 351 pci_conf_write(pc, tag, PCI_EXP_ROM_BAR, romaddr); 352 pci_conf_write(pc, tag, PCI_INT_GNT_LAT, pci_int_lat); 353 pci_conf_write(pc, tag, PCI_CACHE_LAT_BIST, pci_cache_lat); 354 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 355 (PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE)); 356 aprint_normal_dev(self, "changed power state to D0.\n"); 357 return 0; 358 } 359 360 static void 361 ex_pci_confreg_restore(struct ex_pci_softc *psc) 362 { 363 struct ex_softc *sc = (void *) psc; 364 pcireg_t reg; 365 366 reg = pci_conf_read(psc->psc_pc, psc->psc_tag, PCI_COMMAND_STATUS_REG); 367 368 pci_conf_write(psc->psc_pc, psc->psc_tag, 369 PCI_COMMAND_STATUS_REG, 370 (reg & 0xffff0000) | 371 (psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] & 0xffff)); 372 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_BHLC_REG, 373 psc->psc_regs[PCI_BHLC_REG>>2]); 374 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_CBIO, 375 psc->psc_regs[PCI_CBIO>>2]); 376 if (sc->ex_conf & EX_CONF_PCI_FUNCREG) 377 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_FUNCMEM, 378 psc->psc_regs[PCI_FUNCMEM>>2]); 379 pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_INTERRUPT_REG, 380 psc->psc_regs[PCI_INTERRUPT_REG>>2]); 381 } 382 383 static int 384 ex_pci_enable(struct ex_softc *sc) 385 { 386 struct ex_pci_softc *psc = (void *) sc; 387 388 aprint_debug_dev(sc->sc_dev, "going to power state D0\n"); 389 390 /* Now restore the configuration registers. */ 391 ex_pci_confreg_restore(psc); 392 393 return (0); 394 } 395
Indexes created Sun Sep 21 16:09:51 GMT 2025