1 /* $NetBSD: if_hme_pci.c,v 1.9 2001/11/13 07:48:43 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Matthew R. Green 5 * 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * PCI front-end device driver for the HME ethernet device. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: if_hme_pci.c,v 1.9 2001/11/13 07:48:43 lukem Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/syslog.h> 41 #include <sys/device.h> 42 #include <sys/malloc.h> 43 #include <sys/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_dl.h> 47 #include <net/if_ether.h> 48 #include <net/if_media.h> 49 50 #include <dev/mii/mii.h> 51 #include <dev/mii/miivar.h> 52 53 #include <machine/intr.h> 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcidevs.h> 58 59 #include <dev/ic/hmevar.h> 60 61 struct hme_pci_softc { 62 struct hme_softc hsc_hme; /* HME device */ 63 bus_space_tag_t hsc_memt; 64 bus_space_handle_t hsc_memh; 65 void *hsc_ih; 66 }; 67 68 int hmematch_pci __P((struct device *, struct cfdata *, void *)); 69 void hmeattach_pci __P((struct device *, struct device *, void *)); 70 71 struct cfattach hme_pci_ca = { 72 sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci 73 }; 74 75 int 76 hmematch_pci(parent, cf, aux) 77 struct device *parent; 78 struct cfdata *cf; 79 void *aux; 80 { 81 struct pci_attach_args *pa = aux; 82 83 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 84 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK) 85 return (1); 86 87 return (0); 88 } 89 90 void 91 hmeattach_pci(parent, self, aux) 92 struct device *parent, *self; 93 void *aux; 94 { 95 struct pci_attach_args *pa = aux; 96 struct hme_pci_softc *hsc = (void *)self; 97 struct hme_softc *sc = &hsc->hsc_hme; 98 pci_intr_handle_t ih; 99 pcireg_t csr; 100 const char *intrstr; 101 int type; 102 103 /* XXX the following declarations should be elsewhere */ 104 extern void myetheraddr __P((u_char *)); 105 106 printf(": Sun Happy Meal Ethernet, rev. %d\n", 107 PCI_REVISION(pa->pa_class)); 108 109 /* 110 * enable io/memory-space accesses. this is kinda of gross; but 111 # the hme comes up with neither IO space enabled, or memory space. 112 */ 113 if (pa->pa_memt) 114 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 115 if (pa->pa_iot) 116 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 117 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 118 if (pa->pa_memt) { 119 type = PCI_MAPREG_TYPE_MEM; 120 csr |= PCI_COMMAND_MEM_ENABLE; 121 sc->sc_bustag = pa->pa_memt; 122 } else { 123 type = PCI_MAPREG_TYPE_IO; 124 csr |= PCI_COMMAND_IO_ENABLE; 125 sc->sc_bustag = pa->pa_iot; 126 } 127 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 128 csr | PCI_COMMAND_MEM_ENABLE); 129 130 sc->sc_dmatag = pa->pa_dmat; 131 132 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 133 /* 134 * Map five register banks: 135 * 136 * bank 0: HME SEB registers: +0x0000 137 * bank 1: HME ETX registers: +0x2000 138 * bank 2: HME ERX registers: +0x4000 139 * bank 3: HME MAC registers: +0x6000 140 * bank 4: HME MIF registers: +0x7000 141 * 142 */ 143 144 #define PCI_HME_BASEADDR 0x10 145 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 146 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0) 147 { 148 printf("%s: unable to map device registers\n", 149 sc->sc_dev.dv_xname); 150 return; 151 } 152 sc->sc_seb = hsc->hsc_memh; 153 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000, 154 0x1000, &sc->sc_etx)) { 155 printf("%s: unable to subregion ETX registers\n", 156 sc->sc_dev.dv_xname); 157 return; 158 } 159 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 160 0x1000, &sc->sc_erx)) { 161 printf("%s: unable to subregion ERX registers\n", 162 sc->sc_dev.dv_xname); 163 return; 164 } 165 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 166 0x1000, &sc->sc_mac)) { 167 printf("%s: unable to subregion MAC registers\n", 168 sc->sc_dev.dv_xname); 169 return; 170 } 171 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 172 0x1000, &sc->sc_mif)) { 173 printf("%s: unable to subregion MIF registers\n", 174 sc->sc_dev.dv_xname); 175 return; 176 } 177 178 myetheraddr(sc->sc_enaddr); 179 180 /* 181 * Map and establish our interrupt. 182 */ 183 if (pci_intr_map(pa, &ih) != 0) { 184 printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); 185 return; 186 } 187 intrstr = pci_intr_string(pa->pa_pc, ih); 188 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, hme_intr, sc); 189 if (hsc->hsc_ih == NULL) { 190 printf("%s: unable to establish interrupt", 191 sc->sc_dev.dv_xname); 192 if (intrstr != NULL) 193 printf(" at %s", intrstr); 194 printf("\n"); 195 return; 196 } 197 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 198 199 sc->sc_burst = 16; /* XXX */ 200 201 /* Finish off the attach. */ 202 hme_config(sc); 203 } 204