1 /* $OpenBSD: if_an_pci.c,v 1.4 2001/06/23 01:44:30 mickey Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999 5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: src/sys/dev/an/if_an_pci.c,v 1.1 2000/01/14 20:40:56 wpaul Exp $ 35 */ 36 37 /* 38 * This is a PCI shim for the Aironet PC4500/4800 wireless network 39 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices, 40 * which all have basically the same interface. The ISA and PCI cards 41 * are actually bridge adapters with PCMCIA cards inserted into them, 42 * however they appear as normal PCI or ISA devices to the host. 43 * 44 * All we do here is handle the PCI match and attach and set up an 45 * interrupt handler entry point. The PCI version of the card uses 46 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with 47 * multiple PCI address space mappings. The primary mapping at PCI 48 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card. 49 * The I/O address of the Aironet is actually at register 0x18, which 50 * is the local bus mapping register for bus space 0. There are also 51 * registers for additional register spaces at registers 0x1C and 52 * 0x20, but these are unused in the Aironet devices. To find out 53 * more, you need a datasheet for the 9050 from PLX, but you have 54 * to go through their sales office to get it. Bleh. 55 */ 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/device.h> 60 #include <sys/timeout.h> 61 #include <sys/socket.h> 62 63 #include <net/if.h> 64 #include <net/if_dl.h> 65 66 #include <netinet/in.h> 67 #include <netinet/if_ether.h> 68 69 #include <machine/bus.h> 70 #include <machine/intr.h> 71 72 #include <dev/pci/pcireg.h> 73 #include <dev/pci/pcivar.h> 74 #include <dev/pci/pcidevs.h> 75 76 #include <dev/ic/anvar.h> 77 #include <dev/ic/anreg.h> 78 79 #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 80 #define AN_PCI_LOIO 0x18 /* Aironet iobase */ 81 82 int an_pci_match __P((struct device *, void *, void *)); 83 void an_pci_attach __P((struct device *, struct device *, void *)); 84 85 struct cfattach an_pci_ca = { 86 sizeof (struct an_softc), an_pci_match, an_pci_attach 87 }; 88 89 int 90 an_pci_match(parent, match, aux) 91 struct device *parent; 92 void *match; 93 void *aux; 94 { 95 struct pci_attach_args *pa = aux; 96 97 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AIRONET && 98 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AIRONET_PCI352 || 99 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AIRONET_PC4500 || 100 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AIRONET_PC4800)) 101 return(1); 102 103 return(0); 104 } 105 106 void 107 an_pci_attach(parent, self, aux) 108 struct device *parent; 109 struct device *self; 110 void *aux; 111 { 112 struct an_softc *sc = (struct an_softc *)self; 113 struct pci_attach_args *pa = aux; 114 pci_intr_handle_t ih; 115 bus_space_handle_t ioh; 116 bus_space_tag_t iot = pa->pa_iot; 117 pci_chipset_tag_t pc = pa->pa_pc; 118 pcireg_t csr; 119 const char *intrstr; 120 121 /* Map the I/O ports. */ 122 if (pci_mapreg_map(pa, AN_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 123 &iot, &ioh, NULL, NULL, 0) != 0) { 124 printf(": can't map I/O space\n"); 125 return; 126 } 127 sc->an_btag = iot; 128 sc->an_bhandle = ioh; 129 130 /* Enable the card. */ 131 csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 132 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 133 csr | PCI_COMMAND_MASTER_ENABLE); 134 135 /* Map and establish the interrupt. */ 136 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 137 pa->pa_intrline, &ih)) { 138 printf("\n%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 139 return; 140 } 141 intrstr = pci_intr_string(pc, ih); 142 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, an_intr, sc, 143 sc->sc_dev.dv_xname); 144 if (sc->sc_ih == NULL) { 145 printf("\n%s: couldn't establish interrupt", 146 sc->sc_dev.dv_xname); 147 if (intrstr != NULL) 148 printf(" at %s", intrstr); 149 printf("\n"); 150 return; 151 } 152 printf(": %s", intrstr); 153 154 an_attach(sc); 155 } 156