if_re_cardbus.c revision 1.3
1 /* $NetBSD: if_re_cardbus.c,v 1.3 2005/01/13 14:13:18 kanaoka Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Jonathan Stone 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * if_re_cardbus.c: 32 * Cardbus specific routines for Realtek 8169 ethernet adapter. 33 * Tested for : 34 * Netgear GA-511 (8169S) 35 * Buffalo LPC-CB-CLGT 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: if_re_cardbus.c,v 1.3 2005/01/13 14:13:18 kanaoka Exp $"); 40 41 #include "opt_inet.h" 42 #include "opt_ns.h" 43 #include "bpfilter.h" 44 #include "rnd.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/callout.h> 49 #include <sys/device.h> 50 #include <sys/sockio.h> 51 #include <sys/mbuf.h> 52 #include <sys/malloc.h> 53 #include <sys/kernel.h> 54 #include <sys/socket.h> 55 56 #include <net/if.h> 57 #include <net/if_arp.h> 58 #include <net/if_ether.h> 59 #include <net/if_dl.h> 60 #include <net/if_media.h> 61 #ifdef INET 62 #include <netinet/in.h> 63 #include <netinet/if_inarp.h> 64 #endif 65 #ifdef NS 66 #include <netns/ns.h> 67 #include <netns/ns_if.h> 68 #endif 69 70 #if NBPFILTER > 0 71 #include <net/bpf.h> 72 #endif 73 #if NRND > 0 74 #include <sys/rnd.h> 75 #endif 76 77 #include <machine/bus.h> 78 79 #include <dev/pci/pcireg.h> 80 #include <dev/pci/pcivar.h> 81 #include <dev/pci/pcidevs.h> 82 83 #include <dev/cardbus/cardbusvar.h> 84 #include <dev/pci/pcidevs.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 89 /* 90 * Default to using PIO access for this driver. On SMP systems, 91 * there appear to be problems with memory mapped mode: it looks like 92 * doing too many memory mapped access back to back in rapid succession 93 * can hang the bus. I'm inclined to blame this on crummy design/construction 94 * on the part of Realtek. Memory mapped mode does appear to work on 95 * uniprocessor systems though. 96 */ 97 #define RTK_USEIOSPACE 98 99 #include <dev/ic/rtl81x9reg.h> 100 #include <dev/ic/rtl81x9var.h> 101 102 #include <dev/ic/rtl8169var.h> 103 104 /* 105 * Various supported device vendors/types and their names. 106 */ 107 static const struct rtk_type re_cardbus_devs[] = { 108 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169, 109 RTK_8169, "Realtek 10/100/1000baseT" }, 110 { 0, 0, 0, NULL } 111 }; 112 113 static int re_cardbus_match(struct device *, struct cfdata *, void *); 114 static void re_cardbus_attach(struct device *, struct device *, void *); 115 static int re_cardbus_detach(struct device *, int); 116 117 struct re_cardbus_softc { 118 struct rtk_softc sc_rtk; /* real rtk softc */ 119 120 /* CardBus-specific goo. */ 121 void *sc_ih; 122 cardbus_devfunc_t sc_ct; 123 cardbustag_t sc_tag; 124 int sc_csr; 125 int sc_cben; 126 int sc_bar_reg; 127 pcireg_t sc_bar_val; 128 bus_size_t sc_mapsize; 129 int sc_intrline; 130 }; 131 132 CFATTACH_DECL(re_cardbus, sizeof(struct re_cardbus_softc), 133 re_cardbus_match, re_cardbus_attach, re_cardbus_detach, re_activate); 134 135 const struct rtk_type *re_cardbus_lookup 136 __P((const struct cardbus_attach_args *)); 137 138 void re_cardbus_setup __P((struct re_cardbus_softc *)); 139 140 int re_cardbus_enable __P((struct rtk_softc *)); 141 void re_cardbus_disable __P((struct rtk_softc *)); 142 void re_cardbus_power __P((struct rtk_softc *, int)); 143 144 const struct rtk_type * 145 re_cardbus_lookup(ca) 146 const struct cardbus_attach_args *ca; 147 { 148 const struct rtk_type *t; 149 150 for (t = re_cardbus_devs; t->rtk_name != NULL; t++) { 151 if (CARDBUS_VENDOR(ca->ca_id) == t->rtk_vid && 152 CARDBUS_PRODUCT(ca->ca_id) == t->rtk_did) { 153 return (t); 154 } 155 } 156 return (NULL); 157 } 158 159 int 160 re_cardbus_match(parent, match, aux) 161 struct device *parent; 162 struct cfdata *match; 163 void *aux; 164 { 165 struct cardbus_attach_args *ca = aux; 166 167 if (re_cardbus_lookup(ca) != NULL) 168 return (1); 169 170 return (0); 171 } 172 173 174 void 175 re_cardbus_attach(struct device *parent, struct device *self, void *aux) 176 { 177 struct re_cardbus_softc *csc = (struct re_cardbus_softc *)self; 178 struct rtk_softc *sc = &csc->sc_rtk; 179 struct cardbus_attach_args *ca = aux; 180 cardbus_devfunc_t ct = ca->ca_ct; 181 const struct rtk_type *t; 182 bus_addr_t adr; 183 184 sc->sc_dmat = ca->ca_dmat; 185 csc->sc_ct = ct; 186 csc->sc_tag = ca->ca_tag; 187 csc->sc_intrline = ca->ca_intrline; 188 189 t = re_cardbus_lookup(ca); 190 if (t == NULL) { 191 printf("\n"); 192 panic("re_cardbus_attach: impossible"); 193 } 194 printf(": %s\n", t->rtk_name); 195 196 /* 197 * Power management hooks. 198 */ 199 sc->sc_enable = re_cardbus_enable; 200 sc->sc_disable = re_cardbus_disable; 201 sc->sc_power = re_cardbus_power; 202 203 /* 204 * Map control/status registers. 205 */ 206 csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE; 207 #ifdef RTK_USEIOSPACE 208 if (Cardbus_mapreg_map(ct, RTK_PCI_LOIO, CARDBUS_MAPREG_TYPE_IO, 0, 209 &sc->rtk_btag, &sc->rtk_bhandle, &adr, &csc->sc_mapsize) == 0) { 210 #if rbus 211 #else 212 (*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize); 213 #endif 214 csc->sc_cben = CARDBUS_IO_ENABLE; 215 csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE; 216 csc->sc_bar_reg = RTK_PCI_LOIO; 217 csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO; 218 } 219 #else 220 if (Cardbus_mapreg_map(ct, RTK_PCI_LOMEM, CARDBUS_MAPREG_TYPE_MEM, 0, 221 &sc->rtk_btag, &sc->rtk_bhandle, &adr, &csc->sc_mapsize) == 0) { 222 #if rbus 223 #else 224 (*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize); 225 #endif 226 csc->sc_cben = CARDBUS_MEM_ENABLE; 227 csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE; 228 csc->sc_bar_reg = RTK_PCI_LOMEM; 229 csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM; 230 } 231 #endif 232 else { 233 printf("%s: unable to map deviceregisters\n", 234 sc->sc_dev.dv_xname); 235 return; 236 } 237 /* 238 * Handle power management nonsense and initialize the 239 * configuration registers. 240 */ 241 re_cardbus_setup(csc); 242 243 sc->rtk_type = t->rtk_basetype; 244 sc->sc_dmat = ca->ca_dmat; 245 re_attach(sc); 246 247 /* 248 * Power down the socket. 249 */ 250 Cardbus_function_disable(csc->sc_ct); 251 } 252 253 int 254 re_cardbus_detach(struct device *self, int flags) 255 { 256 struct re_cardbus_softc *csc = (void *) self; 257 struct rtk_softc *sc = &csc->sc_rtk; 258 struct cardbus_devfunc *ct = csc->sc_ct; 259 int rv; 260 261 #ifdef DIAGNOSTIC 262 if (ct == NULL) 263 panic("%s: cardbus softc, cardbus_devfunc NULL", 264 sc->sc_dev.dv_xname); 265 #endif 266 rv = re_detach(sc); 267 if (rv) 268 return (rv); 269 /* 270 * Unhook the interrupt handler. 271 */ 272 if (csc->sc_ih != NULL) 273 cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih); 274 275 /* 276 * Release bus space and close window. 277 */ 278 if (csc->sc_bar_reg != 0) 279 Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, 280 sc->rtk_btag, sc->rtk_bhandle, csc->sc_mapsize); 281 282 return (0); 283 } 284 285 void 286 re_cardbus_setup(struct re_cardbus_softc *csc) 287 { 288 struct rtk_softc *sc = &csc->sc_rtk; 289 cardbus_devfunc_t ct = csc->sc_ct; 290 cardbus_chipset_tag_t cc = ct->ct_cc; 291 cardbus_function_tag_t cf = ct->ct_cf; 292 pcireg_t reg,command; 293 int pmreg; 294 295 /* 296 * Handle power management nonsense. 297 */ 298 if (cardbus_get_capability(cc, cf, csc->sc_tag, 299 PCI_CAP_PWRMGMT, &pmreg, 0)) { 300 command = cardbus_conf_read(cc, cf, csc->sc_tag, 301 pmreg + PCI_PMCSR); 302 if (command & RTK_PSTATE_MASK) { 303 pcireg_t iobase, membase, irq; 304 305 /* Save important PCI config data. */ 306 iobase = cardbus_conf_read(cc, cf, csc->sc_tag, 307 RTK_PCI_LOIO); 308 membase = cardbus_conf_read(cc, cf,csc->sc_tag, 309 RTK_PCI_LOMEM); 310 irq = cardbus_conf_read(cc, cf,csc->sc_tag, 311 CARDBUS_INTERRUPT_REG); 312 313 /* Reset the power state. */ 314 printf("%s: chip is in D%d power mode " 315 "-- setting to D0\n", sc->sc_dev.dv_xname, 316 command & RTK_PSTATE_MASK); 317 command &= ~RTK_PSTATE_MASK; 318 cardbus_conf_write(cc, cf, csc->sc_tag, 319 pmreg + PCI_PMCSR, command); 320 321 /* Restore PCI config data. */ 322 cardbus_conf_write(cc, cf, csc->sc_tag, 323 RTK_PCI_LOIO, iobase); 324 cardbus_conf_write(cc, cf, csc->sc_tag, 325 RTK_PCI_LOMEM, membase); 326 cardbus_conf_write(cc, cf, csc->sc_tag, 327 CARDBUS_INTERRUPT_REG, irq); 328 } 329 } 330 331 /* Program the BAR */ 332 cardbus_conf_write(cc, cf, csc->sc_tag, 333 csc->sc_bar_reg, csc->sc_bar_val); 334 335 /* Make sure the right access type is on the CardBus bridge. */ 336 (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben); 337 (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE); 338 339 /* Enable the appropriate bits in the CARDBUS CSR. */ 340 reg = cardbus_conf_read(cc, cf, csc->sc_tag, 341 CARDBUS_COMMAND_STATUS_REG); 342 reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE); 343 reg |= csc->sc_csr; 344 cardbus_conf_write(cc, cf, csc->sc_tag, 345 CARDBUS_COMMAND_STATUS_REG, reg); 346 347 /* 348 * Make sure the latency timer is set to some reasonable 349 * value. 350 */ 351 reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG); 352 if (CARDBUS_LATTIMER(reg) < 0x40) { 353 reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT); 354 reg |= (0x40 << CARDBUS_LATTIMER_SHIFT); 355 cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg); 356 } 357 } 358 359 int 360 re_cardbus_enable(struct rtk_softc *sc) 361 { 362 struct re_cardbus_softc *csc = (void *) sc; 363 cardbus_devfunc_t ct = csc->sc_ct; 364 cardbus_chipset_tag_t cc = ct->ct_cc; 365 cardbus_function_tag_t cf = ct->ct_cf; 366 367 /* 368 * Power on the socket. 369 */ 370 Cardbus_function_enable(ct); 371 372 /* 373 * Set up the PCI configuration registers. 374 */ 375 re_cardbus_setup(csc); 376 377 /* 378 * Map and establish the interrupt. 379 */ 380 csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, 381 IPL_NET, re_intr, sc); 382 if (csc->sc_ih == NULL) { 383 printf("%s: unable to establish interrupt at %d\n", 384 sc->sc_dev.dv_xname, csc->sc_intrline); 385 Cardbus_function_disable(csc->sc_ct); 386 return (1); 387 } 388 printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname, 389 csc->sc_intrline); 390 return (0); 391 } 392 393 void 394 re_cardbus_disable(struct rtk_softc *sc) 395 { 396 struct re_cardbus_softc *csc = (void *) sc; 397 cardbus_devfunc_t ct = csc->sc_ct; 398 cardbus_chipset_tag_t cc = ct->ct_cc; 399 cardbus_function_tag_t cf = ct->ct_cf; 400 401 /* Unhook the interrupt handler. */ 402 cardbus_intr_disestablish(cc, cf, csc->sc_ih); 403 csc->sc_ih = NULL; 404 405 /* Power down the socket. */ 406 Cardbus_function_disable(ct); 407 } 408 409 void 410 re_cardbus_power(struct rtk_softc *sc, int why) 411 { 412 struct re_cardbus_softc *csc = (void *) sc; 413 414 if (why == PWR_RESUME) { 415 /* 416 * Give the PCI configuration registers a kick 417 * in the head. 418 */ 419 #ifdef DIAGNOSTIC 420 if (RTK_IS_ENABLED(sc) == 0) 421 panic("re_cardbus_power"); 422 #endif 423 re_cardbus_setup(csc); 424 } 425 } 426
Indexes created Mon Sep 29 15:09:53 GMT 2025