1 /* $NetBSD: if_hme_pci.c,v 1.5 2001/08/27 22:37:33 augustss 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/param.h> 36 #include <sys/systm.h> 37 #include <sys/syslog.h> 38 #include <sys/device.h> 39 #include <sys/malloc.h> 40 #include <sys/socket.h> 41 42 #include <net/if.h> 43 #include <net/if_dl.h> 44 #include <net/if_ether.h> 45 #include <net/if_media.h> 46 47 #include <dev/mii/mii.h> 48 #include <dev/mii/miivar.h> 49 50 #include <machine/intr.h> 51 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcidevs.h> 55 56 #include <dev/ic/hmevar.h> 57 58 struct hme_pci_softc { 59 struct hme_softc hsc_hme; /* HME device */ 60 bus_space_tag_t hsc_memt; 61 bus_space_handle_t hsc_memh; 62 void *hsc_ih; 63 }; 64 65 int hmematch_pci __P((struct device *, struct cfdata *, void *)); 66 void hmeattach_pci __P((struct device *, struct device *, void *)); 67 68 struct cfattach hme_pci_ca = { 69 sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci 70 }; 71 72 int 73 hmematch_pci(parent, cf, aux) 74 struct device *parent; 75 struct cfdata *cf; 76 void *aux; 77 { 78 struct pci_attach_args *pa = aux; 79 80 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 81 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK) 82 return (1); 83 84 return (0); 85 } 86 87 void 88 hmeattach_pci(parent, self, aux) 89 struct device *parent, *self; 90 void *aux; 91 { 92 struct pci_attach_args *pa = aux; 93 struct hme_pci_softc *hsc = (void *)self; 94 struct hme_softc *sc = &hsc->hsc_hme; 95 pci_intr_handle_t intrhandle; 96 /* XXX the following declarations should be elsewhere */ 97 extern void myetheraddr __P((u_char *)); 98 pcireg_t csr; 99 const char *intrstr; 100 int type; 101 102 /* 103 * enable io/memory-space accesses. this is kinda of gross; but 104 # the hme comes up with neither IO space enabled, or memory space. 105 */ 106 if (pa->pa_memt) 107 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 108 if (pa->pa_iot) 109 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 110 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 111 if (pa->pa_memt) { 112 type = PCI_MAPREG_TYPE_MEM; 113 csr |= PCI_COMMAND_MEM_ENABLE; 114 sc->sc_bustag = pa->pa_memt; 115 } else { 116 type = PCI_MAPREG_TYPE_IO; 117 csr |= PCI_COMMAND_IO_ENABLE; 118 sc->sc_bustag = pa->pa_iot; 119 } 120 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 121 csr | PCI_COMMAND_MEM_ENABLE); 122 123 sc->sc_dmatag = pa->pa_dmat; 124 125 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 126 /* 127 * Map five register banks: 128 * 129 * bank 0: HME SEB registers: +0x0000 130 * bank 1: HME ETX registers: +0x2000 131 * bank 2: HME ERX registers: +0x4000 132 * bank 3: HME MAC registers: +0x6000 133 * bank 4: HME MIF registers: +0x7000 134 * 135 */ 136 137 #define PCI_HME_BASEADDR 0x10 138 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 139 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0) 140 { 141 printf(": could not map hme registers\n"); 142 return; 143 } 144 sc->sc_seb = hsc->hsc_memh; 145 sc->sc_etx = hsc->hsc_memh + 0x2000; 146 sc->sc_erx = hsc->hsc_memh + 0x4000; 147 sc->sc_mac = hsc->hsc_memh + 0x6000; 148 sc->sc_mif = hsc->hsc_memh + 0x7000; 149 150 myetheraddr(sc->sc_enaddr); 151 152 #if 0 153 /* 154 * Get transfer burst size from PROM and pass it on 155 * to the back-end driver. 156 */ 157 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 158 if (sbusburst == 0) 159 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 160 161 burst = getpropint(node, "burst-sizes", -1); 162 if (burst == -1) 163 /* take SBus burst sizes */ 164 burst = sbusburst; 165 166 /* Clamp at parent's burst sizes */ 167 burst &= sbusburst; 168 169 /* Translate into plain numerical format */ 170 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 171 (burst & SBUS_BURST_16) ? 16 : 0; 172 #endif 173 174 sc->sc_burst = 16; /* XXX */ 175 176 /* 177 * call the main configure 178 */ 179 hme_config(sc); 180 181 #if 0 182 printf("%s: ", sc->sc_dev.dv_xname); 183 pci_conf_print(pa->pa_pc, pa->pa_tag, 0); 184 #endif 185 186 if (pci_intr_map(pa, &intrhandle) != 0) { 187 printf("%s: couldn't map interrupt\n", 188 sc->sc_dev.dv_xname); 189 return; /* bus_unmap ? */ 190 } 191 intrstr = pci_intr_string(pa->pa_pc, intrhandle); 192 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, 193 intrhandle, IPL_NET, hme_intr, sc); 194 if (hsc->hsc_ih != NULL) { 195 printf("%s: using %s for interrupt\n", 196 sc->sc_dev.dv_xname, 197 intrstr ? intrstr : "unknown interrupt"); 198 } else { 199 printf("%s: couldn't establish interrupt", 200 sc->sc_dev.dv_xname); 201 if (intrstr != NULL) 202 printf(" at %s", intrstr); 203 printf("\n"); 204 return; /* bus_unmap ? */ 205 } 206 } 207