1 /* $NetBSD: if_rtk_pci.c,v 1.48 2022/09/24 18:12:42 thorpej 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 1.48 2022/09/24 18:12:42 thorpej 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/kernel.h> 59 #include <sys/socket.h> 60 61 #include <net/if.h> 62 #include <net/if_arp.h> 63 #include <net/if_ether.h> 64 #include <net/if_dl.h> 65 #include <net/if_media.h> 66 67 #include <sys/bus.h> 68 69 #include <dev/pci/pcireg.h> 70 #include <dev/pci/pcivar.h> 71 #include <dev/pci/pcidevs.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 76 #include <dev/ic/rtl81x9reg.h> 77 #include <dev/ic/rtl81x9var.h> 78 79 struct rtk_pci_softc { 80 struct rtk_softc sc_rtk; /* real rtk softc */ 81 82 /* PCI-specific goo.*/ 83 void *sc_ih; 84 pci_chipset_tag_t sc_pc; 85 }; 86 87 static const struct rtk_type rtk_pci_devs[] = { 88 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129, 89 RTK_8129, "Realtek 8129 10/100BaseTX" }, 90 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139, 91 RTK_8139, "Realtek 8139 10/100BaseTX" }, 92 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138, 93 RTK_8139, "Realtek 8138 10/100BaseTX" }, 94 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139D, 95 RTK_8139, "Realtek 8139D 10/100BaseTX" }, 96 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8100, 97 RTK_8139, "Realtek 8100 10/100BaseTX" }, 98 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030, 99 RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" }, 100 { PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139, 101 RTK_8139, "Delta Electronics 8139 10/100BaseTX" }, 102 { PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139, 103 RTK_8139, "Addtron Technology 8139 10/100BaseTX" }, 104 { PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND, 105 RTK_8139, "SEGA Broadband Adapter" }, 106 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE520TX, 107 RTK_8139, "D-Link Systems DFE 520TX" }, 108 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS, 109 RTK_8139, "D-Link Systems DFE 530TX+" }, 110 { PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21, 111 RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" }, 112 }; 113 114 static int rtk_pci_match(device_t, cfdata_t, void *); 115 static void rtk_pci_attach(device_t, device_t, void *); 116 static int rtk_pci_detach(device_t, int); 117 118 CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc), 119 rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL); 120 121 static const struct rtk_type * 122 rtk_pci_lookup(const struct pci_attach_args *pa) 123 { 124 int i; 125 126 for (i = 0; i < __arraycount(rtk_pci_devs); i++) { 127 if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid) 128 continue; 129 if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did) 130 return &rtk_pci_devs[i]; 131 } 132 133 return NULL; 134 } 135 136 static int 137 rtk_pci_match(device_t parent, cfdata_t cf, void *aux) 138 { 139 struct pci_attach_args *pa = aux; 140 141 if (rtk_pci_lookup(pa) != NULL) 142 return 1; 143 144 return 0; 145 } 146 147 /* 148 * Attach the interface. Allocate softc structures, do ifmedia 149 * setup and ethernet/BPF attach. 150 */ 151 static void 152 rtk_pci_attach(device_t parent, device_t self, void *aux) 153 { 154 struct rtk_pci_softc *psc = device_private(self); 155 struct rtk_softc *sc = &psc->sc_rtk; 156 struct pci_attach_args *pa = aux; 157 pci_chipset_tag_t pc = pa->pa_pc; 158 pci_intr_handle_t ih; 159 bus_space_tag_t iot, memt; 160 bus_space_handle_t ioh, memh; 161 bus_size_t iosize, memsize; 162 pcireg_t csr; 163 const char *intrstr = NULL; 164 const struct rtk_type *t; 165 bool ioh_valid, memh_valid; 166 char intrbuf[PCI_INTRSTR_LEN]; 167 168 sc->sc_dev = self; 169 psc->sc_pc = pa->pa_pc; 170 171 t = rtk_pci_lookup(pa); 172 KASSERT(t != NULL); 173 174 pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1); 175 176 /* 177 * Map control/status registers. 178 * 179 * The original FreeBSD's driver has the following comment: 180 * 181 * Default to using PIO access for this driver. On SMP systems, 182 * there appear to be problems with memory mapped mode: 183 * it looks like doing too many memory mapped access 184 * back to back in rapid succession can hang the bus. 185 * I'm inclined to blame this on crummy design/construction 186 * on the part of Realtek. Memory mapped mode does appear to 187 * work on uniprocessor systems though. 188 * 189 * On NetBSD, some ports don't support PCI I/O space properly, 190 * so we try to map both and prefer I/O space to mem space. 191 */ 192 ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 193 &iot, &ioh, NULL, &iosize) == 0); 194 memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 195 &memt, &memh, NULL, &memsize) == 0); 196 if (ioh_valid) { 197 sc->rtk_btag = iot; 198 sc->rtk_bhandle = ioh; 199 sc->rtk_bsize = iosize; 200 if (memh_valid) 201 bus_space_unmap(memt, memh, memsize); 202 } else if (memh_valid) { 203 sc->rtk_btag = memt; 204 sc->rtk_bhandle = memh; 205 sc->rtk_bsize = memsize; 206 } else { 207 aprint_error_dev(self, "can't map registers\n"); 208 return; 209 } 210 211 /* Allocate interrupt */ 212 if (pci_intr_map(pa, &ih)) { 213 aprint_error_dev(self, "couldn't map interrupt\n"); 214 return; 215 } 216 intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); 217 psc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_NET, rtk_intr, sc, 218 device_xname(self)); 219 if (psc->sc_ih == NULL) { 220 aprint_error_dev(self, "couldn't establish interrupt"); 221 if (intrstr != NULL) 222 aprint_error(" at %s", intrstr); 223 aprint_error("\n"); 224 return; 225 } 226 227 if (t->rtk_basetype == RTK_8129) 228 sc->sc_quirk |= RTKQ_8129; 229 230 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 231 232 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 233 csr |= PCI_COMMAND_MASTER_ENABLE; 234 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr); 235 236 sc->sc_dmat = pa->pa_dmat; 237 sc->sc_flags |= RTK_ENABLED; 238 239 if (pmf_device_register(self, NULL, NULL)) 240 pmf_class_network_register(self, &sc->ethercom.ec_if); 241 else 242 aprint_error_dev(self, "couldn't establish power handler\n"); 243 244 rtk_attach(sc); 245 } 246 247 static int 248 rtk_pci_detach(device_t self, int flags) 249 { 250 struct rtk_pci_softc *psc = device_private(self); 251 struct rtk_softc *sc = &psc->sc_rtk; 252 int rv; 253 254 /* rtk_stop() */ 255 sc->ethercom.ec_if.if_stop(&sc->ethercom.ec_if, 0); 256 257 rv = rtk_detach(sc); 258 if (rv) 259 return rv; 260 261 if (psc->sc_ih != NULL) { 262 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 263 psc->sc_ih = NULL; 264 } 265 266 if (sc->rtk_bsize != 0) { 267 bus_space_unmap(sc->rtk_btag, sc->rtk_bhandle, sc->rtk_bsize); 268 sc->rtk_bsize = 0; 269 } 270 271 return 0; 272 } 273