1 /* $NetBSD: if_rtk_pci.c,v 1.45 2014/03/29 19:28:25 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998 5 * Bill Paul <wpaul@ctr.columbia.edu>. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp 35 */ 36 37 /* 38 * Realtek 8129/8139 PCI NIC driver 39 * 40 * Supports several extremely cheap PCI 10/100 adapters based on 41 * the Realtek chipset. Datasheets can be obtained from 42 * www.realtek.com.tw. 43 * 44 * Written by Bill Paul <wpaul@ctr.columbia.edu> 45 * Electrical Engineering Department 46 * Columbia University, New York City 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: if_rtk_pci.c,v 1.45 2014/03/29 19:28:25 christos Exp $"); 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/callout.h> 55 #include <sys/device.h> 56 #include <sys/sockio.h> 57 #include <sys/mbuf.h> 58 #include <sys/malloc.h> 59 #include <sys/kernel.h> 60 #include <sys/socket.h> 61 62 #include <net/if.h> 63 #include <net/if_arp.h> 64 #include <net/if_ether.h> 65 #include <net/if_dl.h> 66 #include <net/if_media.h> 67 68 #include <sys/bus.h> 69 70 #include <dev/pci/pcireg.h> 71 #include <dev/pci/pcivar.h> 72 #include <dev/pci/pcidevs.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 77 #include <dev/ic/rtl81x9reg.h> 78 #include <dev/ic/rtl81x9var.h> 79 80 struct rtk_pci_softc { 81 struct rtk_softc sc_rtk; /* real rtk softc */ 82 83 /* PCI-specific goo.*/ 84 void *sc_ih; 85 pci_chipset_tag_t sc_pc; 86 }; 87 88 static const struct rtk_type rtk_pci_devs[] = { 89 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129, 90 RTK_8129, "Realtek 8129 10/100BaseTX" }, 91 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139, 92 RTK_8139, "Realtek 8139 10/100BaseTX" }, 93 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138, 94 RTK_8139, "Realtek 8138 10/100BaseTX" }, 95 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139D, 96 RTK_8139, "Realtek 8139D 10/100BaseTX" }, 97 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8100, 98 RTK_8139, "Realtek 8100 10/100BaseTX" }, 99 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030, 100 RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" }, 101 { PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139, 102 RTK_8139, "Delta Electronics 8139 10/100BaseTX" }, 103 { PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139, 104 RTK_8139, "Addtron Technology 8139 10/100BaseTX" }, 105 { PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND, 106 RTK_8139, "SEGA Broadband Adapter" }, 107 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS, 108 RTK_8139, "D-Link Systems DFE 530TX+" }, 109 { PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21, 110 RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" }, 111 }; 112 113 static int rtk_pci_match(device_t, cfdata_t, void *); 114 static void rtk_pci_attach(device_t, device_t, void *); 115 static int rtk_pci_detach(device_t, int); 116 117 CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc), 118 rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL); 119 120 static const struct rtk_type * 121 rtk_pci_lookup(const struct pci_attach_args *pa) 122 { 123 int i; 124 125 for (i = 0; i < __arraycount(rtk_pci_devs); i++) { 126 if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid) 127 continue; 128 if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did) 129 return &rtk_pci_devs[i]; 130 } 131 132 return NULL; 133 } 134 135 static int 136 rtk_pci_match(device_t parent, cfdata_t cf, void *aux) 137 { 138 struct pci_attach_args *pa = aux; 139 140 if (rtk_pci_lookup(pa) != NULL) 141 return 1; 142 143 return 0; 144 } 145 146 /* 147 * Attach the interface. Allocate softc structures, do ifmedia 148 * setup and ethernet/BPF attach. 149 */ 150 static void 151 rtk_pci_attach(device_t parent, device_t self, void *aux) 152 { 153 struct rtk_pci_softc *psc = device_private(self); 154 struct rtk_softc *sc = &psc->sc_rtk; 155 struct pci_attach_args *pa = aux; 156 pci_chipset_tag_t pc = pa->pa_pc; 157 pci_intr_handle_t ih; 158 bus_space_tag_t iot, memt; 159 bus_space_handle_t ioh, memh; 160 bus_size_t iosize, memsize; 161 pcireg_t csr; 162 const char *intrstr = NULL; 163 const struct rtk_type *t; 164 bool ioh_valid, memh_valid; 165 char intrbuf[PCI_INTRSTR_LEN]; 166 167 sc->sc_dev = self; 168 psc->sc_pc = pa->pa_pc; 169 170 t = rtk_pci_lookup(pa); 171 KASSERT(t != NULL); 172 173 pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1); 174 175 /* 176 * Map control/status registers. 177 * 178 * The original FreeBSD's driver has the following comment: 179 * 180 * Default to using PIO access for this driver. On SMP systems, 181 * there appear to be problems with memory mapped mode: 182 * it looks like doing too many memory mapped access 183 * back to back in rapid succession can hang the bus. 184 * I'm inclined to blame this on crummy design/construction 185 * on the part of Realtek. Memory mapped mode does appear to 186 * work on uniprocessor systems though. 187 * 188 * On NetBSD, some ports don't support PCI I/O space properly, 189 * so we try to map both and prefer I/O space to mem space. 190 */ 191 ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 192 &iot, &ioh, NULL, &iosize) == 0); 193 memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 194 &memt, &memh, NULL, &memsize) == 0); 195 if (ioh_valid) { 196 sc->rtk_btag = iot; 197 sc->rtk_bhandle = ioh; 198 sc->rtk_bsize = iosize; 199 if (memh_valid) 200 bus_space_unmap(memt, memh, memsize); 201 } else if (memh_valid) { 202 sc->rtk_btag = memt; 203 sc->rtk_bhandle = memh; 204 sc->rtk_bsize = memsize; 205 } else { 206 aprint_error_dev(self, "can't map registers\n"); 207 return; 208 } 209 210 /* Allocate interrupt */ 211 if (pci_intr_map(pa, &ih)) { 212 aprint_error_dev(self, "couldn't map interrupt\n"); 213 return; 214 } 215 intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); 216 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc); 217 if (psc->sc_ih == NULL) { 218 aprint_error_dev(self, "couldn't establish interrupt"); 219 if (intrstr != NULL) 220 aprint_error(" at %s", intrstr); 221 aprint_error("\n"); 222 return; 223 } 224 225 if (t->rtk_basetype == RTK_8129) 226 sc->sc_quirk |= RTKQ_8129; 227 228 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 229 230 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 231 csr |= PCI_COMMAND_MASTER_ENABLE; 232 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr); 233 234 sc->sc_dmat = pa->pa_dmat; 235 sc->sc_flags |= RTK_ENABLED; 236 237 if (pmf_device_register(self, NULL, NULL)) 238 pmf_class_network_register(self, &sc->ethercom.ec_if); 239 else 240 aprint_error_dev(self, "couldn't establish power handler\n"); 241 242 rtk_attach(sc); 243 } 244 245 static int 246 rtk_pci_detach(device_t self, int flags) 247 { 248 struct rtk_pci_softc *psc = device_private(self); 249 struct rtk_softc *sc = &psc->sc_rtk; 250 int rv; 251 252 /* rtk_stop() */ 253 sc->ethercom.ec_if.if_stop(&sc->ethercom.ec_if, 0); 254 255 rv = rtk_detach(sc); 256 if (rv) 257 return rv; 258 259 if (psc->sc_ih != NULL) { 260 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 261 psc->sc_ih = NULL; 262 } 263 264 if (sc->rtk_bsize != 0) { 265 bus_space_unmap(sc->rtk_btag, sc->rtk_bhandle, sc->rtk_bsize); 266 sc->rtk_bsize = 0; 267 } 268 269 return 0; 270 } 271