Annotation of sys/dev/pci/if_ath_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_ath_pci.c,v 1.15 2007/06/06 21:41:31 reyk Exp $ */
! 2: /* $NetBSD: if_ath_pci.c,v 1.7 2004/06/30 05:58:17 mycroft Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2002-2004 Sam Leffler, Errno Consulting
! 6: * All rights reserved.
! 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: * without modification.
! 14: * 2. Redistributions in binary form must reproduce at minimum a disclaimer
! 15: * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
! 16: * redistribution must be conditioned upon including a substantially
! 17: * similar Disclaimer requirement for further binary redistribution.
! 18: * 3. Neither the names of the above-listed copyright holders nor the names
! 19: * of any contributors may be used to endorse or promote products derived
! 20: * from this software without specific prior written permission.
! 21: *
! 22: * NO WARRANTY
! 23: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! 24: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
! 25: * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
! 26: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! 27: * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
! 28: * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 29: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 30: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
! 31: * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 32: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 33: * THE POSSIBILITY OF SUCH DAMAGES.
! 34: */
! 35:
! 36: /*
! 37: * PCI front-end for the Atheros Wireless LAN controller driver.
! 38: */
! 39:
! 40: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/mbuf.h>
! 43: #include <sys/malloc.h>
! 44: #include <sys/kernel.h>
! 45: #include <sys/lock.h>
! 46: #include <sys/socket.h>
! 47: #include <sys/sockio.h>
! 48: #include <sys/errno.h>
! 49: #include <sys/device.h>
! 50: #include <sys/gpio.h>
! 51:
! 52: #include <machine/bus.h>
! 53:
! 54: #include <net/if.h>
! 55: #include <net/if_dl.h>
! 56: #include <net/if_media.h>
! 57: #include <net/if_llc.h>
! 58: #include <net/if_arp.h>
! 59: #ifdef INET
! 60: #include <netinet/in.h>
! 61: #include <netinet/if_ether.h>
! 62: #endif
! 63:
! 64: #include <net80211/ieee80211_var.h>
! 65: #include <net80211/ieee80211_rssadapt.h>
! 66:
! 67: #include <dev/gpio/gpiovar.h>
! 68:
! 69: #include <dev/pci/pcivar.h>
! 70: #include <dev/pci/pcireg.h>
! 71: #include <dev/pci/pcidevs.h>
! 72:
! 73: #include <dev/ic/athvar.h>
! 74:
! 75: /*
! 76: * PCI glue.
! 77: */
! 78:
! 79: struct ath_pci_softc {
! 80: struct ath_softc sc_sc;
! 81:
! 82: pci_chipset_tag_t sc_pc;
! 83: pcitag_t sc_pcitag;
! 84:
! 85: void *sc_ih; /* interrupt handler */
! 86: };
! 87:
! 88: /* Base Address Register */
! 89: #define ATH_BAR0 0x10
! 90:
! 91: int ath_pci_match(struct device *, void *, void *);
! 92: void ath_pci_attach(struct device *, struct device *, void *);
! 93: void ath_pci_shutdown(void *);
! 94: int ath_pci_detach(struct device *, int);
! 95:
! 96: struct cfattach ath_pci_ca = {
! 97: sizeof(struct ath_pci_softc),
! 98: ath_pci_match,
! 99: ath_pci_attach,
! 100: ath_pci_detach
! 101: };
! 102:
! 103: int
! 104: ath_pci_match(struct device *parent, void *match, void *aux)
! 105: {
! 106: const char* devname;
! 107: struct pci_attach_args *pa = aux;
! 108: pci_vendor_id_t vendor;
! 109:
! 110: vendor = PCI_VENDOR(pa->pa_id);
! 111: if (vendor == 0x128c)
! 112: vendor = PCI_VENDOR_ATHEROS;
! 113: devname = ath_hal_probe(vendor, PCI_PRODUCT(pa->pa_id));
! 114: if (devname)
! 115: return 1;
! 116:
! 117: return 0;
! 118: }
! 119:
! 120: void
! 121: ath_pci_attach(struct device *parent, struct device *self, void *aux)
! 122: {
! 123: struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
! 124: struct ath_softc *sc = &psc->sc_sc;
! 125: struct pci_attach_args *pa = aux;
! 126: pci_chipset_tag_t pc = pa->pa_pc;
! 127: pcitag_t pt = pa->pa_tag;
! 128: bus_space_tag_t iot;
! 129: bus_space_handle_t ioh;
! 130: pci_intr_handle_t ih;
! 131: pcireg_t mem_type;
! 132: void *hook;
! 133: const char *intrstr = NULL;
! 134:
! 135: psc->sc_pc = pc;
! 136: psc->sc_pcitag = pt;
! 137:
! 138: /*
! 139: * Setup memory-mapping of PCI registers.
! 140: */
! 141: mem_type = pci_mapreg_type(pc, pa->pa_tag, ATH_BAR0);
! 142: if (mem_type != PCI_MAPREG_TYPE_MEM &&
! 143: mem_type != PCI_MAPREG_MEM_TYPE_64BIT) {
! 144: printf(": bad PCI register type %d\n", (int)mem_type);
! 145: goto bad;
! 146: }
! 147: if (mem_type == PCI_MAPREG_MEM_TYPE_64BIT)
! 148: sc->sc_64bit = 1;
! 149: if (pci_mapreg_map(pa, ATH_BAR0, mem_type, 0, &iot, &ioh,
! 150: NULL, NULL, 0)) {
! 151: printf(": cannot map register space\n");
! 152: goto bad;
! 153: }
! 154: sc->sc_st = iot;
! 155: sc->sc_sh = ioh;
! 156:
! 157: sc->sc_invalid = 1;
! 158:
! 159: /*
! 160: * Arrange interrupt line.
! 161: */
! 162: if (pci_intr_map(pa, &ih)) {
! 163: printf(": couldn't map interrupt\n");
! 164: goto bad1;
! 165: }
! 166:
! 167: intrstr = pci_intr_string(pc, ih);
! 168: psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ath_intr, sc,
! 169: sc->sc_dev.dv_xname);
! 170: if (psc->sc_ih == NULL) {
! 171: printf(": couldn't map interrupt\n");
! 172: goto bad2;
! 173: }
! 174:
! 175: printf(": %s\n", intrstr);
! 176:
! 177: sc->sc_dmat = pa->pa_dmat;
! 178:
! 179: hook = shutdownhook_establish(ath_pci_shutdown, psc);
! 180: if (hook == NULL) {
! 181: printf(": couldn't make shutdown hook\n");
! 182: goto bad3;
! 183: }
! 184:
! 185: if (ath_attach(PCI_PRODUCT(pa->pa_id), sc) == 0)
! 186: return;
! 187:
! 188: shutdownhook_disestablish(hook);
! 189:
! 190: bad3: pci_intr_disestablish(pc, psc->sc_ih);
! 191: bad2: /* XXX */
! 192: bad1: /* XXX */
! 193: bad:
! 194: return;
! 195: }
! 196:
! 197: int
! 198: ath_pci_detach(struct device *self, int flags)
! 199: {
! 200: struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
! 201:
! 202: ath_detach(&psc->sc_sc, flags);
! 203: pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
! 204:
! 205: return (0);
! 206: }
! 207:
! 208: void
! 209: ath_pci_shutdown(void *self)
! 210: {
! 211: struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
! 212:
! 213: ath_shutdown(&psc->sc_sc);
! 214: }
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