if_atw_cardbus.c revision 1.35
1 /* $NetBSD: if_atw_cardbus.c,v 1.35 2011/07/26 20:51:23 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. This code was adapted for the ADMtek ADM8211 10 * by David Young. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: if_atw_cardbus.c,v 1.35 2011/07/26 20:51:23 dyoung Exp $"); 40 41 #include "opt_inet.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/mbuf.h> 46 #include <sys/malloc.h> 47 #include <sys/kernel.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/errno.h> 51 #include <sys/device.h> 52 53 #include <machine/endian.h> 54 55 #include <net/if.h> 56 #include <net/if_dl.h> 57 #include <net/if_media.h> 58 #include <net/if_ether.h> 59 60 #include <net80211/ieee80211_netbsd.h> 61 #include <net80211/ieee80211_radiotap.h> 62 #include <net80211/ieee80211_var.h> 63 64 #ifdef INET 65 #include <netinet/in.h> 66 #include <netinet/if_inarp.h> 67 #endif 68 69 70 #include <sys/bus.h> 71 #include <sys/intr.h> 72 73 #include <dev/ic/atwreg.h> 74 #include <dev/ic/rf3000reg.h> 75 #include <dev/ic/si4136reg.h> 76 #include <dev/ic/atwvar.h> 77 78 #include <dev/pci/pcivar.h> 79 #include <dev/pci/pcireg.h> 80 #include <dev/pci/pcidevs.h> 81 82 #include <dev/cardbus/cardbusvar.h> 83 #include <dev/pci/pcidevs.h> 84 85 /* 86 * PCI configuration space registers used by the ADM8211. 87 */ 88 #define ATW_PCI_IOBA PCI_BAR(0) /* i/o mapped base */ 89 #define ATW_PCI_MMBA PCI_BAR(1) /* memory mapped base */ 90 91 struct atw_cardbus_softc { 92 struct atw_softc sc_atw; 93 94 /* CardBus-specific goo. */ 95 void *sc_ih; /* interrupt handle */ 96 cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */ 97 pcitag_t sc_tag; /* our CardBus tag */ 98 pcireg_t sc_csr; /* CSR bits */ 99 bus_size_t sc_mapsize; /* the size of mapped bus space 100 * region 101 */ 102 103 int sc_bar_reg; /* which BAR to use */ 104 pcireg_t sc_bar_val; /* value of the BAR */ 105 106 cardbus_intr_line_t sc_intrline; /* interrupt line */ 107 }; 108 109 static int atw_cardbus_match(device_t, cfdata_t, void *); 110 static void atw_cardbus_attach(device_t, device_t, void *); 111 static int atw_cardbus_detach(device_t, int); 112 113 CFATTACH_DECL3_NEW(atw_cardbus, sizeof(struct atw_cardbus_softc), 114 atw_cardbus_match, atw_cardbus_attach, atw_cardbus_detach, atw_activate, 115 NULL, NULL, DVF_DETACH_SHUTDOWN); 116 117 static void atw_cardbus_setup(struct atw_cardbus_softc *); 118 119 static bool atw_cardbus_suspend(device_t, const pmf_qual_t *); 120 static bool atw_cardbus_resume(device_t, const pmf_qual_t *); 121 122 static const struct atw_cardbus_product *atw_cardbus_lookup 123 (const struct cardbus_attach_args *); 124 125 static const struct atw_cardbus_product { 126 u_int32_t acp_vendor; /* PCI vendor ID */ 127 u_int32_t acp_product; /* PCI product ID */ 128 const char *acp_product_name; 129 } atw_cardbus_products[] = { 130 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, 131 "ADMtek ADM8211 802.11 MAC/BBP" }, 132 133 { 0, 0, NULL }, 134 }; 135 136 static const struct atw_cardbus_product * 137 atw_cardbus_lookup(const struct cardbus_attach_args *ca) 138 { 139 const struct atw_cardbus_product *acp; 140 141 for (acp = atw_cardbus_products; acp->acp_product_name != NULL; acp++) { 142 if (PCI_VENDOR(ca->ca_id) == acp->acp_vendor && 143 PCI_PRODUCT(ca->ca_id) == acp->acp_product) 144 return acp; 145 } 146 return NULL; 147 } 148 149 static int 150 atw_cardbus_match(device_t parent, cfdata_t match, void *aux) 151 { 152 struct cardbus_attach_args *ca = aux; 153 154 if (atw_cardbus_lookup(ca) != NULL) 155 return 1; 156 157 return 0; 158 } 159 160 static void 161 atw_cardbus_attach(device_t parent, device_t self, void *aux) 162 { 163 struct atw_cardbus_softc *csc = device_private(self); 164 struct atw_softc *sc = &csc->sc_atw; 165 struct cardbus_attach_args *ca = aux; 166 cardbus_devfunc_t ct = ca->ca_ct; 167 const struct atw_cardbus_product *acp; 168 #if 0 169 int i; 170 #define FUNCREG(__x) {#__x, (__x)} 171 struct { 172 const char *name; 173 bus_size_t ofs; 174 } funcregs[] = { 175 FUNCREG(ATW_FER), FUNCREG(ATW_FEMR), FUNCREG(ATW_FPSR), 176 FUNCREG(ATW_FFER) 177 }; 178 #undef FUNCREG 179 #endif 180 bus_addr_t adr; 181 182 sc->sc_dev = self; 183 sc->sc_dmat = ca->ca_dmat; 184 csc->sc_ct = ct; 185 csc->sc_tag = ca->ca_tag; 186 187 acp = atw_cardbus_lookup(ca); 188 if (acp == NULL) { 189 printf("\n"); 190 panic("atw_cardbus_attach: impossible"); 191 } 192 193 /* Get revision info. */ 194 sc->sc_rev = PCI_REVISION(ca->ca_class); 195 196 printf(": %s, revision %d.%d\n", acp->acp_product_name, 197 (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 198 199 #if 0 200 printf("%s: signature %08x\n", device_xname(self), 201 (rev >> 4) & 0xf, rev & 0xf, 202 Cardbus_conf_read(ct, csc->sc_tag, 0x80)); 203 #endif 204 205 /* 206 * Map the device. 207 */ 208 csc->sc_csr = PCI_COMMAND_MASTER_ENABLE | 209 PCI_COMMAND_PARITY_ENABLE | 210 PCI_COMMAND_SERR_ENABLE; 211 if (Cardbus_mapreg_map(ct, ATW_PCI_MMBA, 212 PCI_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr, 213 &csc->sc_mapsize) == 0) { 214 #if 0 215 printf("%s: atw_cardbus_attach mapped %d bytes mem space\n", 216 device_xname(self), csc->sc_mapsize); 217 #endif 218 csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; 219 csc->sc_bar_reg = ATW_PCI_MMBA; 220 csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM; 221 } else if (Cardbus_mapreg_map(ct, ATW_PCI_IOBA, 222 PCI_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr, 223 &csc->sc_mapsize) == 0) { 224 #if 0 225 printf("%s: atw_cardbus_attach mapped %d bytes I/O space\n", 226 device_xname(self), csc->sc_mapsize); 227 #endif 228 csc->sc_csr |= PCI_COMMAND_IO_ENABLE; 229 csc->sc_bar_reg = ATW_PCI_IOBA; 230 csc->sc_bar_val = adr | PCI_MAPREG_TYPE_IO; 231 } else { 232 aprint_error_dev(self, "unable to map device registers\n"); 233 return; 234 } 235 236 /* 237 * Bring the chip out of powersave mode and initialize the 238 * configuration registers. 239 */ 240 atw_cardbus_setup(csc); 241 242 /* Remember which interrupt line. */ 243 csc->sc_intrline = ca->ca_intrline; 244 245 #if 0 246 /* 247 * The CardBus cards will make it to store-and-forward mode as 248 * soon as you put them under any kind of load, so just start 249 * out there. 250 */ 251 sc->sc_txthresh = 3; /* TBD name constant */ 252 #endif 253 254 #if 0 255 for (i = 0; i < __arraycount(funcregs); i++) { 256 aprint_error_dev(sc->sc_dev, "%s %" PRIx32 "\n", 257 funcregs[i].name, ATW_READ(sc, funcregs[i].ofs)); 258 } 259 #endif 260 261 ATW_WRITE(sc, ATW_FEMR, 0); 262 ATW_WRITE(sc, ATW_FER, ATW_READ(sc, ATW_FER)); 263 264 /* 265 * Bus-independent attach. 266 */ 267 atw_attach(sc); 268 269 if (pmf_device_register1(sc->sc_dev, atw_cardbus_suspend, 270 atw_cardbus_resume, atw_shutdown)) 271 pmf_class_network_register(sc->sc_dev, &sc->sc_if); 272 else 273 aprint_error_dev(sc->sc_dev, 274 "couldn't establish power handler\n"); 275 276 /* 277 * Power down the socket. 278 */ 279 pmf_device_suspend(sc->sc_dev, &sc->sc_qual); 280 } 281 282 static int 283 atw_cardbus_detach(device_t self, int flags) 284 { 285 struct atw_cardbus_softc *csc = device_private(self); 286 struct atw_softc *sc = &csc->sc_atw; 287 struct cardbus_devfunc *ct = csc->sc_ct; 288 int rv; 289 290 #if defined(DIAGNOSTIC) 291 if (ct == NULL) 292 panic("%s: data structure lacks", device_xname(self)); 293 #endif 294 295 rv = atw_detach(sc); 296 if (rv != 0) 297 return rv; 298 299 /* 300 * Unhook the interrupt handler. 301 */ 302 if (csc->sc_ih != NULL) 303 Cardbus_intr_disestablish(ct, csc->sc_ih); 304 305 /* 306 * Release bus space and close window. 307 */ 308 if (csc->sc_bar_reg != 0) 309 Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, 310 sc->sc_st, sc->sc_sh, csc->sc_mapsize); 311 312 return 0; 313 } 314 315 static bool 316 atw_cardbus_resume(device_t self, const pmf_qual_t *qual) 317 { 318 struct atw_cardbus_softc *csc = device_private(self); 319 struct atw_softc *sc = &csc->sc_atw; 320 cardbus_devfunc_t ct = csc->sc_ct; 321 322 /* 323 * Map and establish the interrupt. 324 */ 325 csc->sc_ih = Cardbus_intr_establish(ct, csc->sc_intrline, IPL_NET, 326 atw_intr, sc); 327 if (csc->sc_ih == NULL) { 328 aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n"); 329 return false; 330 } 331 332 return true; 333 } 334 335 static bool 336 atw_cardbus_suspend(device_t self, const pmf_qual_t *qual) 337 { 338 struct atw_cardbus_softc *csc = device_private(self); 339 cardbus_devfunc_t ct = csc->sc_ct; 340 341 /* Unhook the interrupt handler. */ 342 Cardbus_intr_disestablish(ct, csc->sc_ih); 343 csc->sc_ih = NULL; 344 345 return atw_suspend(self, qual); 346 } 347 348 static void 349 atw_cardbus_setup(struct atw_cardbus_softc *csc) 350 { 351 cardbus_devfunc_t ct = csc->sc_ct; 352 pcireg_t csr; 353 int rc; 354 355 if ((rc = cardbus_set_powerstate(ct, csc->sc_tag, PCI_PWR_D0)) != 0) 356 aprint_debug("%s: cardbus_set_powerstate %d\n", __func__, rc); 357 358 /* Program the BAR. */ 359 Cardbus_conf_write(ct, csc->sc_tag, csc->sc_bar_reg, 360 csc->sc_bar_val); 361 362 /* Enable the appropriate bits in the PCI CSR. */ 363 csr = Cardbus_conf_read(ct, csc->sc_tag, PCI_COMMAND_STATUS_REG); 364 csr &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE); 365 csr |= csc->sc_csr; 366 Cardbus_conf_write(ct, csc->sc_tag, PCI_COMMAND_STATUS_REG, csr); 367 } 368
Indexes created Wed Oct 01 15:09:59 GMT 2025