1 /* $OpenBSD: if_pgt_pci.c,v 1.13 2010/08/27 20:06:39 deraadt 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 #include <sys/workq.h> 35 36 #include <machine/bus.h> 37 #include <machine/intr.h> 38 39 #include <net/if.h> 40 #include <net/if_dl.h> 41 #include <net/if_media.h> 42 43 #include <netinet/in.h> 44 #include <netinet/if_ether.h> 45 46 #include <net80211/ieee80211_var.h> 47 #include <net80211/ieee80211_radiotap.h> 48 49 #include <dev/ic/pgtreg.h> 50 #include <dev/ic/pgtvar.h> 51 52 #include <dev/pci/pcireg.h> 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcidevs.h> 55 56 /* Base Address Register */ 57 #define PGT_PCI_BAR0 0x10 58 59 int pgt_pci_match(struct device *, void *, void *); 60 void pgt_pci_attach(struct device *, struct device *, void *); 61 int pgt_pci_detach(struct device *, int); 62 63 struct pgt_pci_softc { 64 struct pgt_softc sc_pgt; 65 66 pci_chipset_tag_t sc_pc; 67 void *sc_ih; 68 bus_size_t sc_mapsize; 69 }; 70 71 struct cfattach pgt_pci_ca = { 72 sizeof(struct pgt_pci_softc), pgt_pci_match, pgt_pci_attach, 73 pgt_pci_detach, pgt_activate 74 }; 75 76 const struct pci_matchid pgt_pci_devices[] = { 77 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 }, 78 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 }, 79 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE154G72 } 80 }; 81 82 int 83 pgt_pci_match(struct device *parent, void *match, void *aux) 84 { 85 return (pci_matchbyid((struct pci_attach_args *)aux, pgt_pci_devices, 86 sizeof(pgt_pci_devices) / sizeof(pgt_pci_devices[0]))); 87 } 88 89 void 90 pgt_pci_attach(struct device *parent, struct device *self, void *aux) 91 { 92 struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self; 93 struct pgt_softc *sc = &psc->sc_pgt; 94 struct pci_attach_args *pa = aux; 95 const char *intrstr = NULL; 96 pci_intr_handle_t ih; 97 int error; 98 99 sc->sc_dmat = pa->pa_dmat; 100 psc->sc_pc = pa->pa_pc; 101 102 /* remember chipset */ 103 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877) 104 sc->sc_flags |= SC_ISL3877; 105 106 /* map control / status registers */ 107 error = pci_mapreg_map(pa, PGT_PCI_BAR0, 108 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, 109 &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0); 110 if (error != 0) { 111 printf(": can't map mem space\n"); 112 return; 113 } 114 115 /* map interrupt */ 116 if (pci_intr_map(pa, &ih) != 0) { 117 printf(": can't map interrupt\n"); 118 return; 119 } 120 121 /* disable all interrupts */ 122 bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0); 123 (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN); 124 DELAY(PGT_WRITEIO_DELAY); 125 126 /* establish interrupt */ 127 intrstr = pci_intr_string(psc->sc_pc, ih); 128 psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc, 129 sc->sc_dev.dv_xname); 130 if (psc->sc_ih == NULL) { 131 printf(": can't establish interrupt"); 132 if (intrstr != NULL) 133 printf(" at %s", intrstr); 134 printf("\n"); 135 return; 136 } 137 printf(": %s\n", intrstr); 138 139 if (rootvp == NULL) 140 mountroothook_establish(pgt_attach, sc); 141 else 142 pgt_attach(sc); 143 } 144 145 int 146 pgt_pci_detach(struct device *self, int flags) 147 { 148 struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self; 149 struct pgt_softc *sc = &psc->sc_pgt; 150 151 if (psc->sc_ih != NULL) { 152 pgt_detach(sc); 153 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 154 } 155 if (psc->sc_mapsize > 0) 156 bus_space_unmap(sc->sc_iotag, sc->sc_iohandle, 157 psc->sc_mapsize); 158 159 return (0); 160 } 161