Annotation of sys/dev/pci/if_pgt_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_pgt_pci.c,v 1.9 2006/11/18 20:44:40 grange Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2006 Marcus Glocker <mglocker@openbsd.org>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: /*
! 20: * PCI front-end for the PrismGT
! 21: */
! 22:
! 23: #include "bpfilter.h"
! 24:
! 25: #include <sys/param.h>
! 26: #include <sys/sockio.h>
! 27: #include <sys/mbuf.h>
! 28: #include <sys/kernel.h>
! 29: #include <sys/socket.h>
! 30: #include <sys/systm.h>
! 31: #include <sys/malloc.h>
! 32: #include <sys/timeout.h>
! 33: #include <sys/device.h>
! 34:
! 35: #include <machine/bus.h>
! 36: #include <machine/intr.h>
! 37:
! 38: #include <net/if.h>
! 39: #include <net/if_dl.h>
! 40: #include <net/if_media.h>
! 41:
! 42: #include <netinet/in.h>
! 43: #include <netinet/if_ether.h>
! 44:
! 45: #include <net80211/ieee80211_var.h>
! 46: #include <net80211/ieee80211_radiotap.h>
! 47:
! 48: #include <dev/ic/pgtreg.h>
! 49: #include <dev/ic/pgtvar.h>
! 50:
! 51: #include <dev/pci/pcireg.h>
! 52: #include <dev/pci/pcivar.h>
! 53: #include <dev/pci/pcidevs.h>
! 54:
! 55: /* Base Address Register */
! 56: #define PGT_PCI_BAR0 0x10
! 57:
! 58: int pgt_pci_match(struct device *, void *, void *);
! 59: void pgt_pci_attach(struct device *, struct device *, void *);
! 60: int pgt_pci_detach(struct device *, int);
! 61:
! 62: struct pgt_pci_softc {
! 63: struct pgt_softc sc_pgt;
! 64:
! 65: pci_chipset_tag_t sc_pc;
! 66: void *sc_ih;
! 67: bus_size_t sc_mapsize;
! 68: };
! 69:
! 70: struct cfattach pgt_pci_ca = {
! 71: sizeof(struct pgt_pci_softc), pgt_pci_match, pgt_pci_attach,
! 72: pgt_pci_detach
! 73: };
! 74:
! 75: const struct pci_matchid pgt_pci_devices[] = {
! 76: { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 },
! 77: { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 }
! 78: };
! 79:
! 80: int
! 81: pgt_pci_match(struct device *parent, void *match, void *aux)
! 82: {
! 83: return (pci_matchbyid((struct pci_attach_args *)aux, pgt_pci_devices,
! 84: sizeof(pgt_pci_devices) / sizeof(pgt_pci_devices[0])));
! 85: }
! 86:
! 87: void
! 88: pgt_pci_attach(struct device *parent, struct device *self, void *aux)
! 89: {
! 90: struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
! 91: struct pgt_softc *sc = &psc->sc_pgt;
! 92: struct pci_attach_args *pa = aux;
! 93: const char *intrstr = NULL;
! 94: pci_intr_handle_t ih;
! 95: int error;
! 96:
! 97: sc->sc_dmat = pa->pa_dmat;
! 98: psc->sc_pc = pa->pa_pc;
! 99:
! 100: /* remember chipset */
! 101: if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877)
! 102: sc->sc_flags |= SC_ISL3877;
! 103:
! 104: /* map control / status registers */
! 105: error = pci_mapreg_map(pa, PGT_PCI_BAR0,
! 106: PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
! 107: &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0);
! 108: if (error != 0) {
! 109: printf(": could not map memory space\n");
! 110: return;
! 111: }
! 112:
! 113: /* map interrupt */
! 114: if (pci_intr_map(pa, &ih) != 0) {
! 115: printf(": could not map interrupt\n");
! 116: return;
! 117: }
! 118:
! 119: /* disable all interrupts */
! 120: bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0);
! 121: (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN);
! 122: DELAY(PGT_WRITEIO_DELAY);
! 123:
! 124: /* establish interrupt */
! 125: intrstr = pci_intr_string(psc->sc_pc, ih);
! 126: psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc,
! 127: sc->sc_dev.dv_xname);
! 128: if (psc->sc_ih == NULL) {
! 129: printf(": could not establish interrupt");
! 130: if (intrstr != NULL)
! 131: printf(" at %s", intrstr);
! 132: printf("\n");
! 133: return;
! 134: }
! 135: printf(": %s\n", intrstr);
! 136:
! 137: if (rootvp == NULL)
! 138: mountroothook_establish(pgt_attach, sc);
! 139: else
! 140: pgt_attach(sc);
! 141: }
! 142:
! 143: int
! 144: pgt_pci_detach(struct device *self, int flags)
! 145: {
! 146: struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
! 147: struct pgt_softc *sc = &psc->sc_pgt;
! 148:
! 149: pgt_detach(sc);
! 150: pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
! 151:
! 152: return (0);
! 153: }
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