if_rtw_cardbus.c revision 1.26
1 /* $NetBSD: if_rtw_cardbus.c,v 1.26 2008/05/14 19:24:48 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 David Young. All rights reserved. 5 * 6 * Adapted for the RTL8180 by David Young. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of David Young may not be used to endorse or promote 17 * products derived from this software without specific prior 18 * written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 23 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David 24 * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 26 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 */ 33 /*- 34 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 35 * All rights reserved. 36 * 37 * This code is derived from software contributed to The NetBSD Foundation 38 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 39 * NASA Ames Research Center. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60 * POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 /* 64 * Cardbus front-end for the Realtek RTL8180 802.11 MAC/BBP driver. 65 * 66 * TBD factor with atw, tlp Cardbus front-ends? 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: if_rtw_cardbus.c,v 1.26 2008/05/14 19:24:48 dyoung Exp $"); 71 72 #include "opt_inet.h" 73 #include "bpfilter.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/mbuf.h> 78 #include <sys/malloc.h> 79 #include <sys/kernel.h> 80 #include <sys/socket.h> 81 #include <sys/ioctl.h> 82 #include <sys/errno.h> 83 #include <sys/device.h> 84 85 #include <machine/endian.h> 86 87 #include <net/if.h> 88 #include <net/if_dl.h> 89 #include <net/if_media.h> 90 #include <net/if_ether.h> 91 92 #include <net80211/ieee80211_netbsd.h> 93 #include <net80211/ieee80211_radiotap.h> 94 #include <net80211/ieee80211_var.h> 95 96 #if NBPFILTER > 0 97 #include <net/bpf.h> 98 #endif 99 100 #ifdef INET 101 #include <netinet/in.h> 102 #include <netinet/if_inarp.h> 103 #endif 104 105 106 #include <sys/bus.h> 107 #include <sys/intr.h> 108 109 #include <dev/ic/rtwreg.h> 110 #include <dev/ic/rtwvar.h> 111 112 #include <dev/pci/pcivar.h> 113 #include <dev/pci/pcireg.h> 114 #include <dev/pci/pcidevs.h> 115 116 #include <dev/cardbus/cardbusvar.h> 117 #include <dev/pci/pcidevs.h> 118 119 /* 120 * PCI configuration space registers used by the RTL8180. 121 */ 122 #define RTW_PCI_IOBA 0x10 /* i/o mapped base */ 123 #define RTW_PCI_MMBA 0x14 /* memory mapped base */ 124 125 struct rtw_cardbus_softc { 126 struct rtw_softc sc_rtw; /* real RTL8180 softc */ 127 128 /* CardBus-specific goo. */ 129 void *sc_ih; /* interrupt handle */ 130 cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */ 131 cardbustag_t sc_tag; /* our CardBus tag */ 132 int sc_csr; /* CSR bits */ 133 bus_size_t sc_mapsize; /* size of the mapped bus space 134 * region 135 */ 136 137 int sc_bar_reg; /* which BAR to use */ 138 pcireg_t sc_bar_val; /* value of the BAR */ 139 140 int sc_intrline; /* interrupt line */ 141 }; 142 143 int rtw_cardbus_match(device_t, struct cfdata *, void *); 144 void rtw_cardbus_attach(device_t, device_t, void *); 145 int rtw_cardbus_detach(device_t, int); 146 147 CFATTACH_DECL_NEW(rtw_cardbus, sizeof(struct rtw_cardbus_softc), 148 rtw_cardbus_match, rtw_cardbus_attach, rtw_cardbus_detach, NULL); 149 150 void rtw_cardbus_setup(struct rtw_cardbus_softc *); 151 152 bool rtw_cardbus_resume(device_t PMF_FN_PROTO); 153 bool rtw_cardbus_suspend(device_t PMF_FN_PROTO); 154 155 const struct rtw_cardbus_product *rtw_cardbus_lookup( 156 const struct cardbus_attach_args *); 157 158 const struct rtw_cardbus_product { 159 u_int32_t rcp_vendor; /* PCI vendor ID */ 160 u_int32_t rcp_product; /* PCI product ID */ 161 const char *rcp_product_name; 162 } rtw_cardbus_products[] = { 163 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8180, 164 "Realtek RTL8180 802.11 MAC/BBP" }, 165 166 { PCI_VENDOR_BELKIN, PCI_PRODUCT_BELKIN_F5D6020V3, 167 "Belkin F5D6020v3 802.11b (RTL8180 MAC/BBP)" }, 168 169 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DWL610, 170 "DWL-610 D-Link Air 802.11b (RTL8180 MAC/BBP)" }, 171 172 { 0, 0, NULL }, 173 }; 174 175 const struct rtw_cardbus_product * 176 rtw_cardbus_lookup(const struct cardbus_attach_args *ca) 177 { 178 const struct rtw_cardbus_product *rcp; 179 180 for (rcp = rtw_cardbus_products; rcp->rcp_product_name != NULL; rcp++) { 181 if (PCI_VENDOR(ca->ca_id) == rcp->rcp_vendor && 182 PCI_PRODUCT(ca->ca_id) == rcp->rcp_product) 183 return rcp; 184 } 185 return NULL; 186 } 187 188 int 189 rtw_cardbus_match(device_t parent, struct cfdata *match, void *aux) 190 { 191 struct cardbus_attach_args *ca = aux; 192 193 if (rtw_cardbus_lookup(ca) != NULL) 194 return 1; 195 196 return 0; 197 } 198 199 static void 200 rtw_cardbus_intr_ack(struct rtw_regs *regs) 201 { 202 RTW_WRITE(regs, RTW_FER, RTW_FER_INTR); 203 } 204 205 static void 206 rtw_cardbus_funcregen(struct rtw_regs *regs, int enable) 207 { 208 u_int32_t reg; 209 rtw_config0123_enable(regs, 1); 210 reg = RTW_READ(regs, RTW_CONFIG3); 211 if (enable) 212 RTW_WRITE(regs, RTW_CONFIG3, reg | RTW_CONFIG3_FUNCREGEN); 213 else 214 RTW_WRITE(regs, RTW_CONFIG3, reg & ~RTW_CONFIG3_FUNCREGEN); 215 rtw_config0123_enable(regs, 0); 216 } 217 218 void 219 rtw_cardbus_attach(device_t parent, device_t self, void *aux) 220 { 221 struct rtw_cardbus_softc *csc = device_private(self); 222 struct rtw_softc *sc = &csc->sc_rtw; 223 struct rtw_regs *regs = &sc->sc_regs; 224 struct cardbus_attach_args *ca = aux; 225 cardbus_devfunc_t ct = ca->ca_ct; 226 const struct rtw_cardbus_product *rcp; 227 bus_addr_t adr; 228 int rev; 229 230 sc->sc_dev = self; 231 sc->sc_dmat = ca->ca_dmat; 232 csc->sc_ct = ct; 233 csc->sc_tag = ca->ca_tag; 234 235 rcp = rtw_cardbus_lookup(ca); 236 if (rcp == NULL) { 237 printf("\n"); 238 panic("rtw_cardbus_attach: impossible"); 239 } 240 241 sc->sc_intr_ack = rtw_cardbus_intr_ack; 242 243 /* Get revision info. */ 244 rev = PCI_REVISION(ca->ca_class); 245 246 printf(": %s\n", rcp->rcp_product_name); 247 248 RTW_DPRINTF(RTW_DEBUG_ATTACH, 249 ("%s: pass %d.%d signature %08x\n", device_xname(self), 250 (rev >> 4) & 0xf, rev & 0xf, 251 cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80))); 252 253 /* 254 * Map the device. 255 */ 256 csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE | 257 CARDBUS_COMMAND_PARITY_ENABLE | 258 CARDBUS_COMMAND_SERR_ENABLE; 259 if (Cardbus_mapreg_map(ct, RTW_PCI_MMBA, CARDBUS_MAPREG_TYPE_MEM, 0, 260 ®s->r_bt, ®s->r_bh, &adr, ®s->r_sz) == 0) { 261 RTW_DPRINTF(RTW_DEBUG_ATTACH, 262 ("%s: %s mapped %" PRIuMAX " bytes mem space\n", 263 device_xname(self), __func__, (uintmax_t)regs->r_sz)); 264 #if rbus 265 #else 266 (*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize); 267 #endif 268 csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE; 269 csc->sc_bar_reg = RTW_PCI_MMBA; 270 csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM; 271 } else if (Cardbus_mapreg_map(ct, RTW_PCI_IOBA, CARDBUS_MAPREG_TYPE_IO, 272 0, ®s->r_bt, ®s->r_bh, &adr, ®s->r_sz) == 0) { 273 RTW_DPRINTF(RTW_DEBUG_ATTACH, 274 ("%s: %s mapped %" PRIuMAX " bytes I/O space\n", 275 device_xname(self), __func__, (uintmax_t)regs->r_sz)); 276 #if rbus 277 #else 278 (*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize); 279 #endif 280 csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE; 281 csc->sc_bar_reg = RTW_PCI_IOBA; 282 csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO; 283 } else { 284 aprint_error_dev(self, "unable to map device registers\n"); 285 return; 286 } 287 288 /* 289 * Bring the chip out of powersave mode and initialize the 290 * configuration registers. 291 */ 292 rtw_cardbus_setup(csc); 293 294 /* Remember which interrupt line. */ 295 csc->sc_intrline = ca->ca_intrline; 296 297 aprint_normal_dev(self, "interrupting at %d\n", csc->sc_intrline); 298 /* 299 * Finish off the attach. 300 */ 301 rtw_attach(sc); 302 303 rtw_cardbus_funcregen(regs, 1); 304 305 RTW_WRITE(regs, RTW_FEMR, RTW_FEMR_INTR); 306 RTW_WRITE(regs, RTW_FER, RTW_FER_INTR); 307 308 if (!pmf_device_register(self, rtw_cardbus_suspend, rtw_cardbus_resume)) 309 aprint_error_dev(self, "couldn't establish power handler\n"); 310 else { 311 pmf_class_network_register(self, &sc->sc_if); 312 /* 313 * Power down the socket. 314 */ 315 pmf_device_suspend_self(self); 316 } 317 } 318 319 int 320 rtw_cardbus_detach(device_t self, int flags) 321 { 322 struct rtw_cardbus_softc *csc = device_private(self); 323 struct rtw_softc *sc = &csc->sc_rtw; 324 struct rtw_regs *regs = &sc->sc_regs; 325 struct cardbus_devfunc *ct = csc->sc_ct; 326 int rc; 327 328 #if defined(DIAGNOSTIC) 329 if (ct == NULL) 330 panic("%s: data structure lacks", device_xname(self)); 331 #endif 332 333 if ((rc = rtw_detach(sc)) != 0) 334 return rc; 335 336 /* 337 * Unhook the interrupt handler. 338 */ 339 if (csc->sc_ih != NULL) 340 cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih); 341 342 /* 343 * Release bus space and close window. 344 */ 345 if (csc->sc_bar_reg != 0) 346 Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, 347 regs->r_bt, regs->r_bh, regs->r_sz); 348 349 return 0; 350 } 351 352 bool 353 rtw_cardbus_resume(device_t self PMF_FN_ARGS) 354 { 355 struct rtw_cardbus_softc *csc = device_private(self); 356 struct rtw_softc *sc = &csc->sc_rtw; 357 cardbus_devfunc_t ct = csc->sc_ct; 358 cardbus_chipset_tag_t cc = ct->ct_cc; 359 cardbus_function_tag_t cf = ct->ct_cf; 360 361 /* 362 * Map and establish the interrupt. 363 */ 364 csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, 365 rtw_intr, sc); 366 if (csc->sc_ih == NULL) { 367 aprint_error_dev(sc->sc_dev, 368 "unable to establish interrupt at %d\n", csc->sc_intrline); 369 return false; 370 } 371 372 rtw_cardbus_funcregen(&sc->sc_regs, 1); 373 374 RTW_WRITE(&sc->sc_regs, RTW_FEMR, RTW_FEMR_INTR); 375 RTW_WRITE(&sc->sc_regs, RTW_FER, RTW_FER_INTR); 376 377 return rtw_resume(self, flags); 378 } 379 380 bool 381 rtw_cardbus_suspend(device_t self PMF_FN_ARGS) 382 { 383 struct rtw_cardbus_softc *csc = device_private(self); 384 struct rtw_softc *sc = &csc->sc_rtw; 385 cardbus_devfunc_t ct = csc->sc_ct; 386 cardbus_chipset_tag_t cc = ct->ct_cc; 387 cardbus_function_tag_t cf = ct->ct_cf; 388 389 if (!rtw_suspend(self, flags)) 390 return false; 391 392 RTW_WRITE(&sc->sc_regs, RTW_FEMR, 393 RTW_READ(&sc->sc_regs, RTW_FEMR) & ~RTW_FEMR_INTR); 394 395 rtw_cardbus_funcregen(&sc->sc_regs, 0); 396 397 /* Unhook the interrupt handler. */ 398 cardbus_intr_disestablish(cc, cf, csc->sc_ih); 399 csc->sc_ih = NULL; 400 return true; 401 } 402 403 void 404 rtw_cardbus_setup(struct rtw_cardbus_softc *csc) 405 { 406 cardbustag_t tag = csc->sc_tag; 407 cardbus_devfunc_t ct = csc->sc_ct; 408 cardbus_chipset_tag_t cc = ct->ct_cc; 409 cardbusreg_t bhlc, csr, lattimer; 410 cardbus_function_tag_t cf = ct->ct_cf; 411 412 (void)cardbus_set_powerstate(ct, tag, PCI_PWR_D0); 413 414 /* I believe the datasheet tries to warn us that the RTL8180 415 * wants for 16 (0x10) to divide the latency timer. 416 */ 417 bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); 418 lattimer = rounddown(PCI_LATTIMER(bhlc), 0x10); 419 if (PCI_LATTIMER(bhlc) != lattimer) { 420 bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 421 bhlc |= (lattimer << PCI_LATTIMER_SHIFT); 422 cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); 423 } 424 425 /* Program the BAR. */ 426 cardbus_conf_write(cc, cf, tag, csc->sc_bar_reg, csc->sc_bar_val); 427 428 /* Enable the appropriate bits in the PCI CSR. */ 429 csr = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); 430 csr &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE); 431 csr |= csc->sc_csr; 432 cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, csr); 433 } 434
Indexes created Mon Sep 29 03:10:08 GMT 2025