1 /* $OpenBSD: if_pgt_pci.c,v 1.20 2024/05/24 06:02:56 jsg 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/systm.h> 27 #include <sys/timeout.h> 28 #include <sys/device.h> 29 30 #include <machine/bus.h> 31 32 #include <net/if.h> 33 #include <net/if_media.h> 34 35 #include <netinet/in.h> 36 #include <netinet/if_ether.h> 37 38 #include <net80211/ieee80211_var.h> 39 #include <net80211/ieee80211_radiotap.h> 40 41 #include <dev/ic/pgtreg.h> 42 #include <dev/ic/pgtvar.h> 43 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcidevs.h> 47 48 /* Base Address Register */ 49 #define PGT_PCI_BAR0 0x10 50 51 int pgt_pci_match(struct device *, void *, void *); 52 void pgt_pci_attach(struct device *, struct device *, void *); 53 int pgt_pci_detach(struct device *, int); 54 55 struct pgt_pci_softc { 56 struct pgt_softc sc_pgt; 57 58 pci_chipset_tag_t sc_pc; 59 void *sc_ih; 60 bus_size_t sc_mapsize; 61 }; 62 63 const struct cfattach pgt_pci_ca = { 64 sizeof(struct pgt_pci_softc), pgt_pci_match, pgt_pci_attach, 65 pgt_pci_detach, pgt_activate 66 }; 67 68 const struct pci_matchid pgt_pci_devices[] = { 69 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 }, 70 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 }, 71 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE154G72 } 72 }; 73 74 int 75 pgt_pci_match(struct device *parent, void *match, void *aux) 76 { 77 return (pci_matchbyid((struct pci_attach_args *)aux, pgt_pci_devices, 78 sizeof(pgt_pci_devices) / sizeof(pgt_pci_devices[0]))); 79 } 80 81 void 82 pgt_pci_attach(struct device *parent, struct device *self, void *aux) 83 { 84 struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self; 85 struct pgt_softc *sc = &psc->sc_pgt; 86 struct pci_attach_args *pa = aux; 87 const char *intrstr = NULL; 88 pci_intr_handle_t ih; 89 int error; 90 91 sc->sc_dmat = pa->pa_dmat; 92 psc->sc_pc = pa->pa_pc; 93 94 /* remember chipset */ 95 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877) 96 sc->sc_flags |= SC_ISL3877; 97 98 /* map control / status registers */ 99 error = pci_mapreg_map(pa, PGT_PCI_BAR0, 100 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, 101 &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0); 102 if (error != 0) { 103 printf(": can't map mem space\n"); 104 return; 105 } 106 107 /* map interrupt */ 108 if (pci_intr_map(pa, &ih) != 0) { 109 printf(": can't map interrupt\n"); 110 return; 111 } 112 113 /* disable all interrupts */ 114 bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0); 115 (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN); 116 DELAY(PGT_WRITEIO_DELAY); 117 118 /* establish interrupt */ 119 intrstr = pci_intr_string(psc->sc_pc, ih); 120 psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc, 121 sc->sc_dev.dv_xname); 122 if (psc->sc_ih == NULL) { 123 printf(": can't establish interrupt"); 124 if (intrstr != NULL) 125 printf(" at %s", intrstr); 126 printf("\n"); 127 return; 128 } 129 printf(": %s\n", intrstr); 130 131 config_mountroot(self, pgt_attach); 132 } 133 134 int 135 pgt_pci_detach(struct device *self, int flags) 136 { 137 struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self; 138 struct pgt_softc *sc = &psc->sc_pgt; 139 140 if (psc->sc_ih != NULL) { 141 pgt_detach(sc); 142 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 143 } 144 if (psc->sc_mapsize > 0) 145 bus_space_unmap(sc->sc_iotag, sc->sc_iohandle, 146 psc->sc_mapsize); 147 148 return (0); 149 } 150