Annotation of sys/dev/cardbus/if_atw_cardbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_atw_cardbus.c,v 1.14 2006/10/12 16:35:52 grange Exp $ */
! 2: /* $NetBSD: if_atw_cardbus.c,v 1.9 2004/07/23 07:07:55 dyoung Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999, 2000, 2003 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center. This code was adapted for the ADMtek ADM8211
! 11: * by David Young.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. All advertising materials mentioning features or use of this software
! 22: * must display the following acknowledgement:
! 23: * This product includes software developed by the NetBSD
! 24: * Foundation, Inc. and its contributors.
! 25: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 26: * contributors may be used to endorse or promote products derived
! 27: * from this software without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 30: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 31: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 32: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 33: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 34: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 35: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 36: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 37: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 38: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 39: * POSSIBILITY OF SUCH DAMAGE.
! 40: */
! 41:
! 42: /*
! 43: * CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver.
! 44: */
! 45:
! 46: #include "bpfilter.h"
! 47:
! 48: #include <sys/param.h>
! 49: #include <sys/systm.h>
! 50: #include <sys/mbuf.h>
! 51: #include <sys/malloc.h>
! 52: #include <sys/kernel.h>
! 53: #include <sys/socket.h>
! 54: #include <sys/ioctl.h>
! 55: #include <sys/errno.h>
! 56: #include <sys/device.h>
! 57:
! 58: #include <machine/endian.h>
! 59:
! 60: #include <net/if.h>
! 61: #include <net/if_dl.h>
! 62: #include <net/if_media.h>
! 63:
! 64: #ifdef INET
! 65: #include <netinet/in.h>
! 66: #include <netinet/if_ether.h>
! 67: #endif
! 68:
! 69: #include <net80211/ieee80211_radiotap.h>
! 70: #include <net80211/ieee80211_var.h>
! 71:
! 72: #if NBPFILTER > 0
! 73: #include <net/bpf.h>
! 74: #endif
! 75:
! 76: #include <machine/bus.h>
! 77: #include <machine/intr.h>
! 78:
! 79: #include <dev/ic/atwreg.h>
! 80: #include <dev/ic/rf3000reg.h>
! 81: #include <dev/ic/si4136reg.h>
! 82: #include <dev/ic/atwvar.h>
! 83:
! 84: #include <dev/pci/pcivar.h>
! 85: #include <dev/pci/pcireg.h>
! 86: #include <dev/pci/pcidevs.h>
! 87:
! 88: #include <dev/cardbus/cardbusvar.h>
! 89:
! 90: /*
! 91: * PCI configuration space registers used by the ADM8211.
! 92: */
! 93: #define ATW_PCI_IOBA 0x10 /* i/o mapped base */
! 94: #define ATW_PCI_MMBA 0x14 /* memory mapped base */
! 95:
! 96: struct atw_cardbus_softc {
! 97: struct atw_softc sc_atw; /* real ADM8211 softc */
! 98:
! 99: /* CardBus-specific goo. */
! 100: void *sc_ih; /* interrupt handle */
! 101: cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */
! 102: cardbustag_t sc_tag; /* our CardBus tag */
! 103: int sc_csr; /* CSR bits */
! 104: bus_size_t sc_mapsize; /* the size of mapped bus space
! 105: region */
! 106:
! 107: int sc_cben; /* CardBus enables */
! 108: int sc_bar_reg; /* which BAR to use */
! 109: pcireg_t sc_bar_val; /* value of the BAR */
! 110:
! 111: int sc_intrline; /* interrupt line */
! 112: };
! 113:
! 114: int atw_cardbus_match(struct device *, void *, void *);
! 115: void atw_cardbus_attach(struct device *, struct device *, void *);
! 116: int atw_cardbus_detach(struct device *, int);
! 117:
! 118: struct cfattach atw_cardbus_ca = {
! 119: sizeof(struct atw_cardbus_softc), atw_cardbus_match, atw_cardbus_attach,
! 120: atw_cardbus_detach
! 121: };
! 122:
! 123: void atw_cardbus_setup(struct atw_cardbus_softc *);
! 124:
! 125: int atw_cardbus_enable(struct atw_softc *);
! 126: void atw_cardbus_disable(struct atw_softc *);
! 127: void atw_cardbus_power(struct atw_softc *, int);
! 128:
! 129: const struct cardbus_matchid atw_cardbus_devices[] = {
! 130: { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 },
! 131: { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRSHPW796 },
! 132: };
! 133:
! 134: int
! 135: atw_cardbus_match(struct device *parent, void *match, void *aux)
! 136: {
! 137: return (cardbus_matchbyid((struct cardbus_attach_args *)aux,
! 138: atw_cardbus_devices,
! 139: sizeof(atw_cardbus_devices)/sizeof(atw_cardbus_devices[0])));
! 140: }
! 141:
! 142: void
! 143: atw_cardbus_attach(struct device *parent, struct device *self, void *aux)
! 144: {
! 145: struct atw_cardbus_softc *csc = (void *)self;
! 146: struct atw_softc *sc = &csc->sc_atw;
! 147: struct cardbus_attach_args *ca = aux;
! 148: cardbus_devfunc_t ct = ca->ca_ct;
! 149: bus_addr_t adr;
! 150:
! 151: sc->sc_dmat = ca->ca_dmat;
! 152: csc->sc_ct = ct;
! 153: csc->sc_tag = ca->ca_tag;
! 154:
! 155: /*
! 156: * Power management hooks.
! 157: */
! 158: sc->sc_enable = atw_cardbus_enable;
! 159: sc->sc_disable = atw_cardbus_disable;
! 160: sc->sc_power = atw_cardbus_power;
! 161:
! 162: /* Get revision info. */
! 163: sc->sc_rev = PCI_REVISION(ca->ca_class);
! 164:
! 165: #if 0
! 166: printf(": signature %08x\n%s",
! 167: cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80),
! 168: sc->sc_dev.dv_xname);
! 169: #endif
! 170:
! 171: /*
! 172: * Map the device.
! 173: */
! 174: csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
! 175: if (Cardbus_mapreg_map(ct, ATW_PCI_MMBA,
! 176: CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr,
! 177: &csc->sc_mapsize) == 0) {
! 178: #if 0
! 179: printf(": atw_cardbus_attach mapped %d bytes mem space\n%s",
! 180: csc->sc_mapsize, sc->sc_dev.dv_xname);
! 181: #endif
! 182: csc->sc_cben = CARDBUS_MEM_ENABLE;
! 183: csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
! 184: csc->sc_bar_reg = ATW_PCI_MMBA;
! 185: csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
! 186: } else if (Cardbus_mapreg_map(ct, ATW_PCI_IOBA,
! 187: CARDBUS_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
! 188: &csc->sc_mapsize) == 0) {
! 189: #if 0
! 190: printf(": atw_cardbus_attach mapped %d bytes I/O space\n%s",
! 191: csc->sc_mapsize, sc->sc_dev.dv_xname);
! 192: #endif
! 193: csc->sc_cben = CARDBUS_IO_ENABLE;
! 194: csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE;
! 195: csc->sc_bar_reg = ATW_PCI_IOBA;
! 196: csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
! 197: } else {
! 198: printf(": unable to map device registers\n");
! 199: return;
! 200: }
! 201:
! 202: /*
! 203: * Bring the chip out of powersave mode and initialize the
! 204: * configuration registers.
! 205: */
! 206: atw_cardbus_setup(csc);
! 207:
! 208: /* Remember which interrupt line. */
! 209: csc->sc_intrline = ca->ca_intrline;
! 210:
! 211: printf(": revision %d.%d: irq %d\n",
! 212: (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf, csc->sc_intrline);
! 213: #if 0
! 214: /*
! 215: * The CardBus cards will make it to store-and-forward mode as
! 216: * soon as you put them under any kind of load, so just start
! 217: * out there.
! 218: */
! 219: sc->sc_txthresh = 3; /* TBD name constant */
! 220: #endif
! 221:
! 222: /*
! 223: * Finish off the attach.
! 224: */
! 225: atw_attach(sc);
! 226:
! 227: ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
! 228:
! 229: /*
! 230: * Power down the socket.
! 231: */
! 232: Cardbus_function_disable(csc->sc_ct);
! 233: }
! 234:
! 235: int
! 236: atw_cardbus_detach(struct device *self, int flags)
! 237: {
! 238: struct atw_cardbus_softc *csc = (void *)self;
! 239: struct atw_softc *sc = &csc->sc_atw;
! 240: struct cardbus_devfunc *ct = csc->sc_ct;
! 241: int rv;
! 242:
! 243: #if defined(DIAGNOSTIC)
! 244: if (ct == NULL)
! 245: panic("%s: data structure lacks", sc->sc_dev.dv_xname);
! 246: #endif
! 247:
! 248: rv = atw_detach(sc);
! 249: if (rv)
! 250: return (rv);
! 251:
! 252: /*
! 253: * Unhook the interrupt handler.
! 254: */
! 255: if (csc->sc_ih != NULL)
! 256: cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
! 257:
! 258: /*
! 259: * Release bus space and close window.
! 260: */
! 261: if (csc->sc_bar_reg != 0)
! 262: Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
! 263: sc->sc_st, sc->sc_sh, csc->sc_mapsize);
! 264:
! 265: return (0);
! 266: }
! 267:
! 268: int
! 269: atw_cardbus_enable(struct atw_softc *sc)
! 270: {
! 271: struct atw_cardbus_softc *csc = (void *) sc;
! 272: cardbus_devfunc_t ct = csc->sc_ct;
! 273: cardbus_chipset_tag_t cc = ct->ct_cc;
! 274: cardbus_function_tag_t cf = ct->ct_cf;
! 275:
! 276: /*
! 277: * Power on the socket.
! 278: */
! 279: Cardbus_function_enable(ct);
! 280:
! 281: /*
! 282: * Set up the PCI configuration registers.
! 283: */
! 284: atw_cardbus_setup(csc);
! 285:
! 286: /*
! 287: * Map and establish the interrupt.
! 288: */
! 289: csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
! 290: atw_intr, sc, sc->sc_dev.dv_xname);
! 291: if (csc->sc_ih == NULL) {
! 292: printf("%s: unable to establish interrupt at %d\n",
! 293: sc->sc_dev.dv_xname, csc->sc_intrline);
! 294: Cardbus_function_disable(csc->sc_ct);
! 295: return (1);
! 296: }
! 297:
! 298: return (0);
! 299: }
! 300:
! 301: void
! 302: atw_cardbus_disable(struct atw_softc *sc)
! 303: {
! 304: struct atw_cardbus_softc *csc = (void *) sc;
! 305: cardbus_devfunc_t ct = csc->sc_ct;
! 306: cardbus_chipset_tag_t cc = ct->ct_cc;
! 307: cardbus_function_tag_t cf = ct->ct_cf;
! 308:
! 309: /* Unhook the interrupt handler. */
! 310: cardbus_intr_disestablish(cc, cf, csc->sc_ih);
! 311: csc->sc_ih = NULL;
! 312:
! 313: /* Power down the socket. */
! 314: Cardbus_function_disable(ct);
! 315: }
! 316:
! 317: void
! 318: atw_cardbus_power(struct atw_softc *sc, int why)
! 319: {
! 320: if (why == PWR_RESUME)
! 321: atw_enable(sc);
! 322: }
! 323:
! 324: void
! 325: atw_cardbus_setup(struct atw_cardbus_softc *csc)
! 326: {
! 327: #ifdef notyet
! 328: struct atw_softc *sc = &csc->sc_atw;
! 329: #endif
! 330: cardbus_devfunc_t ct = csc->sc_ct;
! 331: cardbus_chipset_tag_t cc = ct->ct_cc;
! 332: cardbus_function_tag_t cf = ct->ct_cf;
! 333: pcireg_t reg;
! 334:
! 335: #ifdef notyet
! 336: (void)cardbus_setpowerstate(sc->sc_dev.dv_xname, ct, csc->sc_tag,
! 337: PCI_PWR_D0);
! 338: #endif
! 339:
! 340: /* Program the BAR. */
! 341: cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
! 342: csc->sc_bar_val);
! 343:
! 344: /* Make sure the right access type is on the CardBus bridge. */
! 345: (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
! 346: (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
! 347:
! 348: /* Enable the appropriate bits in the PCI CSR. */
! 349: reg = cardbus_conf_read(cc, cf, csc->sc_tag,
! 350: CARDBUS_COMMAND_STATUS_REG);
! 351: reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE);
! 352: reg |= csc->sc_csr;
! 353: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
! 354: reg);
! 355:
! 356: /*
! 357: * Make sure the latency timer is set to some reasonable
! 358: * value.
! 359: */
! 360: reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
! 361: if (CARDBUS_LATTIMER(reg) < 0x20) {
! 362: reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
! 363: reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
! 364: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
! 365: }
! 366: }
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