if_re_pci.c revision 1.4
1/* $OpenBSD: if_re_pci.c,v 1.4 2005/08/09 04:10:12 mickey Exp $ */ 2 3/* 4 * Copyright (c) 2005 Peter Valchev <pvalchev@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 Realtek 8169 21 */ 22 23#include <sys/param.h> 24#include <sys/endian.h> 25#include <sys/systm.h> 26#include <sys/sockio.h> 27#include <sys/mbuf.h> 28#include <sys/malloc.h> 29#include <sys/kernel.h> 30#include <sys/device.h> 31#include <sys/socket.h> 32 33#include <net/if.h> 34#include <net/if_dl.h> 35#include <net/if_media.h> 36 37#ifdef INET 38#include <netinet/in.h> 39#include <netinet/in_systm.h> 40#include <netinet/in_var.h> 41#include <netinet/ip.h> 42#include <netinet/if_ether.h> 43#endif 44 45#include <dev/mii/mii.h> 46#include <dev/mii/miivar.h> 47 48#include <dev/pci/pcireg.h> 49#include <dev/pci/pcivar.h> 50#include <dev/pci/pcidevs.h> 51 52#include <dev/ic/rtl81x9reg.h> 53#include <dev/ic/revar.h> 54 55struct re_pci_softc { 56 /* General */ 57 struct rl_softc sc_rl; 58 59 /* PCI-specific data */ 60 void *sc_ih; 61 pci_chipset_tag_t sc_pc; 62 pcitag_t sc_pcitag; 63}; 64 65const struct pci_matchid re_pci_devices[] = { 66 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 }, 67 { PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_CGLAPCIGT }, 68 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DGE528T }, 69 { PCI_VENDOR_USR2, PCI_PRODUCT_USR2_USR997902 }, 70}; 71 72#define RE_LINKSYS_EG1032_SUBID 0x00241737 73 74int re_pci_probe(struct device *, void *, void *); 75void re_pci_attach(struct device *, struct device *, void *); 76 77/* 78 * PCI autoconfig definitions 79 */ 80struct cfattach re_pci_ca = { 81 sizeof(struct re_pci_softc), 82 re_pci_probe, 83 re_pci_attach 84}; 85 86/* 87 * Probe for a Realtek 8169/8110 chip. Check the PCI vendor and device 88 * IDs against our list and return a device name if we find a match. 89 */ 90int 91re_pci_probe(struct device *parent, void *match, void *aux) 92{ 93 struct pci_attach_args *pa = aux; 94 pci_chipset_tag_t pc = pa->pa_pc; 95 pcireg_t subid; 96 97 subid = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 98 99 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_LINKSYS && 100 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LINKSYS_EG1032 && 101 subid == RE_LINKSYS_EG1032_SUBID) 102 return (1); 103 104 return (pci_matchbyid((struct pci_attach_args *)aux, re_pci_devices, 105 sizeof(re_pci_devices)/sizeof(re_pci_devices[0]))); 106} 107 108/* 109 * PCI-specific attach routine 110 */ 111void 112re_pci_attach(struct device *parent, struct device *self, void *aux) 113{ 114 struct re_pci_softc *psc = (struct re_pci_softc *)self; 115 struct rl_softc *sc = &psc->sc_rl; 116 struct pci_attach_args *pa = aux; 117 pci_chipset_tag_t pc = pa->pa_pc; 118 pci_intr_handle_t ih; 119 const char *intrstr = NULL; 120 bus_size_t iosize; 121 pcireg_t command; 122 123#ifndef BURN_BRIDGES 124 /* 125 * Handle power management nonsense. 126 */ 127 128 command = pci_conf_read(pc, pa->pa_tag, RL_PCI_CAPID) & 0x000000FF; 129 130 if (command == 0x01) { 131 u_int32_t iobase, membase, irq; 132 133 /* Save important PCI config data. */ 134 iobase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOIO); 135 membase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOMEM); 136 irq = pci_conf_read(pc, pa->pa_tag, RL_PCI_INTLINE); 137 138 /* Reset the power state. */ 139 printf("%s: chip is is in D%d power mode " 140 "-- setting to D0\n", sc->sc_dev.dv_xname, 141 command & RL_PSTATE_MASK); 142 command &= 0xFFFFFFFC; 143 144 /* Restore PCI config data. */ 145 pci_conf_write(pc, pa->pa_tag, RL_PCI_LOIO, iobase); 146 pci_conf_write(pc, pa->pa_tag, RL_PCI_LOMEM, membase); 147 pci_conf_write(pc, pa->pa_tag, RL_PCI_INTLINE, irq); 148 } 149#endif 150 151 /* 152 * Map control/status registers. 153 */ 154 command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 155 156 if ((command & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) == 0) { 157 printf(": neither i/o nor mem enabled\n"); 158 return; 159 } 160 161 if (command & PCI_COMMAND_MEM_ENABLE) { 162 if (pci_mapreg_map(pa, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 163 &sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) { 164 printf(": can't map mem space\n"); 165 return; 166 } 167 } else { 168 if (pci_mapreg_map(pa, RL_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 169 &sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) { 170 printf(": can't map i/o space\n"); 171 return; 172 } 173 } 174 175 /* Allocate interrupt */ 176 if (pci_intr_map(pa, &ih)) { 177 printf(": couldn't map interrupt\n"); 178 return; 179 } 180 intrstr = pci_intr_string(pc, ih); 181 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, re_intr, sc, 182 sc->sc_dev.dv_xname); 183 if (psc->sc_ih == NULL) { 184 printf(": couldn't establish interrupt"); 185 if (intrstr != NULL) 186 printf(" at %s", intrstr); 187 return; 188 } 189 printf(": %s", intrstr); 190 191 sc->sc_dmat = pa->pa_dmat; 192 sc->sc_flags |= RL_ENABLED; 193 sc->rl_type = RL_8169; 194 195 /* Call bus-independent attach routine */ 196 re_attach_common(sc); 197} 198