1 /* $NetBSD: if_hme_pci.c,v 1.12 2002/10/02 16:51:26 thorpej 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 1.12 2002/10/02 16:51:26 thorpej 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 CFATTACH_DECL(hme_pci, sizeof(struct hme_pci_softc), 72 hmematch_pci, hmeattach_pci, NULL, NULL); 73 74 int 75 hmematch_pci(parent, cf, aux) 76 struct device *parent; 77 struct cfdata *cf; 78 void *aux; 79 { 80 struct pci_attach_args *pa = aux; 81 82 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 83 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK) 84 return (1); 85 86 return (0); 87 } 88 89 void 90 hmeattach_pci(parent, self, aux) 91 struct device *parent, *self; 92 void *aux; 93 { 94 struct pci_attach_args *pa = aux; 95 struct hme_pci_softc *hsc = (void *)self; 96 struct hme_softc *sc = &hsc->hsc_hme; 97 pci_intr_handle_t ih; 98 pcireg_t csr; 99 const char *intrstr; 100 int type; 101 102 /* XXX the following declarations should be elsewhere */ 103 extern void myetheraddr __P((u_char *)); 104 105 printf(": Sun Happy Meal Ethernet, rev. %d\n", 106 PCI_REVISION(pa->pa_class)); 107 108 /* 109 * enable io/memory-space accesses. this is kinda of gross; but 110 # the hme comes up with neither IO space enabled, or memory space. 111 */ 112 if (pa->pa_memt) 113 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 114 if (pa->pa_iot) 115 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 116 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 117 if (pa->pa_memt) { 118 type = PCI_MAPREG_TYPE_MEM; 119 csr |= PCI_COMMAND_MEM_ENABLE; 120 sc->sc_bustag = pa->pa_memt; 121 } else { 122 type = PCI_MAPREG_TYPE_IO; 123 csr |= PCI_COMMAND_IO_ENABLE; 124 sc->sc_bustag = pa->pa_iot; 125 } 126 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 127 csr | PCI_COMMAND_MEM_ENABLE); 128 129 sc->sc_dmatag = pa->pa_dmat; 130 131 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 132 /* 133 * Map five register banks: 134 * 135 * bank 0: HME SEB registers: +0x0000 136 * bank 1: HME ETX registers: +0x2000 137 * bank 2: HME ERX registers: +0x4000 138 * bank 3: HME MAC registers: +0x6000 139 * bank 4: HME MIF registers: +0x7000 140 * 141 */ 142 143 #define PCI_HME_BASEADDR 0x10 144 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 145 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0) 146 { 147 printf("%s: unable to map device registers\n", 148 sc->sc_dev.dv_xname); 149 return; 150 } 151 sc->sc_seb = hsc->hsc_memh; 152 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000, 153 0x1000, &sc->sc_etx)) { 154 printf("%s: unable to subregion ETX registers\n", 155 sc->sc_dev.dv_xname); 156 return; 157 } 158 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 159 0x1000, &sc->sc_erx)) { 160 printf("%s: unable to subregion ERX registers\n", 161 sc->sc_dev.dv_xname); 162 return; 163 } 164 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 165 0x1000, &sc->sc_mac)) { 166 printf("%s: unable to subregion MAC registers\n", 167 sc->sc_dev.dv_xname); 168 return; 169 } 170 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 171 0x1000, &sc->sc_mif)) { 172 printf("%s: unable to subregion MIF registers\n", 173 sc->sc_dev.dv_xname); 174 return; 175 } 176 177 myetheraddr(sc->sc_enaddr); 178 179 /* 180 * Map and establish our interrupt. 181 */ 182 if (pci_intr_map(pa, &ih) != 0) { 183 printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); 184 return; 185 } 186 intrstr = pci_intr_string(pa->pa_pc, ih); 187 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, hme_intr, sc); 188 if (hsc->hsc_ih == NULL) { 189 printf("%s: unable to establish interrupt", 190 sc->sc_dev.dv_xname); 191 if (intrstr != NULL) 192 printf(" at %s", intrstr); 193 printf("\n"); 194 return; 195 } 196 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 197 198 sc->sc_burst = 16; /* XXX */ 199 200 /* Finish off the attach. */ 201 hme_config(sc); 202 } 203