if_re_pci.c revision 1.12
1/* $OpenBSD: if_re_pci.c,v 1.12 2006/06/24 02:36:15 brad 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/timeout.h> 32#include <sys/socket.h> 33 34#include <net/if.h> 35#include <net/if_dl.h> 36#include <net/if_media.h> 37 38#ifdef INET 39#include <netinet/in.h> 40#include <netinet/in_systm.h> 41#include <netinet/in_var.h> 42#include <netinet/ip.h> 43#include <netinet/if_ether.h> 44#endif 45 46#include <dev/mii/mii.h> 47#include <dev/mii/miivar.h> 48 49#include <dev/pci/pcireg.h> 50#include <dev/pci/pcivar.h> 51#include <dev/pci/pcidevs.h> 52 53#include <dev/ic/rtl81x9reg.h> 54#include <dev/ic/revar.h> 55 56struct re_pci_softc { 57 /* General */ 58 struct rl_softc sc_rl; 59 60 /* PCI-specific data */ 61 void *sc_ih; 62 pci_chipset_tag_t sc_pc; 63 pcitag_t sc_pcitag; 64}; 65 66const struct pci_matchid re_pci_devices[] = { 67 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8168 }, 68 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 }, 69 { PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_CGLAPCIGT }, 70 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DGE528T }, 71 { PCI_VENDOR_USR2, PCI_PRODUCT_USR2_USR997902 }, 72 { PCI_VENDOR_TTTECH, PCI_PRODUCT_TTTECH_MC322 } 73}; 74 75#define RE_LINKSYS_EG1032_SUBID 0x00241737 76 77int re_pci_probe(struct device *, void *, void *); 78void re_pci_attach(struct device *, struct device *, void *); 79 80/* 81 * PCI autoconfig definitions 82 */ 83struct cfattach re_pci_ca = { 84 sizeof(struct re_pci_softc), 85 re_pci_probe, 86 re_pci_attach 87}; 88 89/* 90 * Probe for a Realtek 8169/8110 chip. Check the PCI vendor and device 91 * IDs against our list and return a device name if we find a match. 92 */ 93int 94re_pci_probe(struct device *parent, void *match, void *aux) 95{ 96 struct pci_attach_args *pa = aux; 97 pci_chipset_tag_t pc = pa->pa_pc; 98 pcireg_t subid; 99 100 subid = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 101 102 /* C+ mode 8139's */ 103 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_REALTEK && 104 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RT8139 && 105 PCI_REVISION(pa->pa_class) == 0x20) 106 return (1); 107 108 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_LINKSYS && 109 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LINKSYS_EG1032 && 110 subid == RE_LINKSYS_EG1032_SUBID) 111 return (1); 112 113 return (pci_matchbyid((struct pci_attach_args *)aux, re_pci_devices, 114 sizeof(re_pci_devices)/sizeof(re_pci_devices[0]))); 115} 116 117/* 118 * PCI-specific attach routine 119 */ 120void 121re_pci_attach(struct device *parent, struct device *self, void *aux) 122{ 123 struct re_pci_softc *psc = (struct re_pci_softc *)self; 124 struct rl_softc *sc = &psc->sc_rl; 125 struct pci_attach_args *pa = aux; 126 pci_chipset_tag_t pc = pa->pa_pc; 127 pci_intr_handle_t ih; 128 const char *intrstr = NULL; 129 bus_size_t iosize; 130 pcireg_t command; 131 132 /* 133 * Handle power management nonsense. 134 */ 135 136 command = pci_conf_read(pc, pa->pa_tag, RL_PCI_CAPID) & 0x000000FF; 137 138 if (command == 0x01) { 139 u_int32_t iobase, membase, irq; 140 141 /* Save important PCI config data. */ 142 iobase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOIO); 143 membase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOMEM); 144 irq = pci_conf_read(pc, pa->pa_tag, RL_PCI_INTLINE); 145 146 /* Reset the power state. */ 147 printf("%s: chip is is in D%d power mode " 148 "-- setting to D0\n", sc->sc_dev.dv_xname, 149 command & RL_PSTATE_MASK); 150 command &= 0xFFFFFFFC; 151 152 /* Restore PCI config data. */ 153 pci_conf_write(pc, pa->pa_tag, RL_PCI_LOIO, iobase); 154 pci_conf_write(pc, pa->pa_tag, RL_PCI_LOMEM, membase); 155 pci_conf_write(pc, pa->pa_tag, RL_PCI_INTLINE, irq); 156 } 157 158 /* 159 * Map control/status registers. 160 */ 161 command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 162 163 if ((command & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) == 0) { 164 printf(": neither i/o nor mem enabled\n"); 165 return; 166 } 167 168 if (command & PCI_COMMAND_MEM_ENABLE) { 169 if (pci_mapreg_map(pa, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 170 &sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) { 171 printf(": can't map mem space\n"); 172 return; 173 } 174 } else { 175 if (pci_mapreg_map(pa, RL_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 176 &sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) { 177 printf(": can't map i/o space\n"); 178 return; 179 } 180 } 181 182 /* Allocate interrupt */ 183 if (pci_intr_map(pa, &ih)) { 184 printf(": couldn't map interrupt\n"); 185 return; 186 } 187 intrstr = pci_intr_string(pc, ih); 188 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, re_intr, sc, 189 sc->sc_dev.dv_xname); 190 if (psc->sc_ih == NULL) { 191 printf(": couldn't establish interrupt"); 192 if (intrstr != NULL) 193 printf(" at %s", intrstr); 194 return; 195 } 196 printf(": %s", intrstr); 197 198 sc->sc_dmat = pa->pa_dmat; 199 sc->sc_flags |= RL_ENABLED; 200 201 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_REALTEK) { 202 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RT8139) 203 sc->rl_type = RL_8139CPLUS; 204 else 205 sc->rl_type = RL_8169; 206 } else if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_TTTECH && 207 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_TTTECH_MC322) 208 sc->rl_type = RL_8139CPLUS; 209 else 210 sc->rl_type = RL_8169; 211 212 /* Call bus-independent attach routine */ 213 re_attach_common(sc); 214} 215