| 1 | /* $NetBSD: if_rtk_pci.c,v 1.46 2015/05/09 21:53:45 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 1.46 2015/05/09 21:53:45 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_DFE520TX, |
| 108 | RTK_8139, "D-Link Systems DFE 520TX" }, |
| 109 | { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS, |
| 110 | RTK_8139, "D-Link Systems DFE 530TX+" }, |
| 111 | { PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21, |
| 112 | RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" }, |
| 113 | }; |
| 114 | |
| 115 | static int rtk_pci_match(device_t, cfdata_t, void *); |
| 116 | static void rtk_pci_attach(device_t, device_t, void *); |
| 117 | static int rtk_pci_detach(device_t, int); |
| 118 | |
| 119 | CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc), |
| 120 | rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL); |
| 121 | |
| 122 | static const struct rtk_type * |
| 123 | rtk_pci_lookup(const struct pci_attach_args *pa) |
| 124 | { |
| 125 | int i; |
| 126 | |
| 127 | for (i = 0; i < __arraycount(rtk_pci_devs); i++) { |
| 128 | if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid) |
| 129 | continue; |
| 130 | if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did) |
| 131 | return &rtk_pci_devs[i]; |
| 132 | } |
| 133 | |
| 134 | return NULL; |
| 135 | } |
| 136 | |
| 137 | static int |
| 138 | rtk_pci_match(device_t parent, cfdata_t cf, void *aux) |
| 139 | { |
| 140 | struct pci_attach_args *pa = aux; |
| 141 | |
| 142 | if (rtk_pci_lookup(pa) != NULL) |
| 143 | return 1; |
| 144 | |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * Attach the interface. Allocate softc structures, do ifmedia |
| 150 | * setup and ethernet/BPF attach. |
| 151 | */ |
| 152 | static void |
| 153 | rtk_pci_attach(device_t parent, device_t self, void *aux) |
| 154 | { |
| 155 | struct rtk_pci_softc *psc = device_private(self); |
| 156 | struct rtk_softc *sc = &psc->sc_rtk; |
| 157 | struct pci_attach_args *pa = aux; |
| 158 | pci_chipset_tag_t pc = pa->pa_pc; |
| 159 | pci_intr_handle_t ih; |
| 160 | bus_space_tag_t iot, memt; |
| 161 | bus_space_handle_t ioh, memh; |
| 162 | bus_size_t iosize, memsize; |
| 163 | pcireg_t csr; |
| 164 | const char *intrstr = NULL; |
| 165 | const struct rtk_type *t; |
| 166 | bool ioh_valid, memh_valid; |
| 167 | char intrbuf[PCI_INTRSTR_LEN]; |
| 168 | |
| 169 | sc->sc_dev = self; |
| 170 | psc->sc_pc = pa->pa_pc; |
| 171 | |
| 172 | t = rtk_pci_lookup(pa); |
| 173 | KASSERT(t != NULL); |
| 174 | |
| 175 | pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1); |
| 176 | |
| 177 | /* |
| 178 | * Map control/status registers. |
| 179 | * |
| 180 | * The original FreeBSD's driver has the following comment: |
| 181 | * |
| 182 | * Default to using PIO access for this driver. On SMP systems, |
| 183 | * there appear to be problems with memory mapped mode: |
| 184 | * it looks like doing too many memory mapped access |
| 185 | * back to back in rapid succession can hang the bus. |
| 186 | * I'm inclined to blame this on crummy design/construction |
| 187 | * on the part of Realtek. Memory mapped mode does appear to |
| 188 | * work on uniprocessor systems though. |
| 189 | * |
| 190 | * On NetBSD, some ports don't support PCI I/O space properly, |
| 191 | * so we try to map both and prefer I/O space to mem space. |
| 192 | */ |
| 193 | ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, |
| 194 | &iot, &ioh, NULL, &iosize) == 0); |
| 195 | memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, |
| 196 | &memt, &memh, NULL, &memsize) == 0); |
| 197 | if (ioh_valid) { |
| 198 | sc->rtk_btag = iot; |
| 199 | sc->rtk_bhandle = ioh; |
| 200 | sc->rtk_bsize = iosize; |
| 201 | if (memh_valid) |
| 202 | bus_space_unmap(memt, memh, memsize); |
| 203 | } else if (memh_valid) { |
| 204 | sc->rtk_btag = memt; |
| 205 | sc->rtk_bhandle = memh; |
| 206 | sc->rtk_bsize = memsize; |
| 207 | } else { |
| 208 | aprint_error_dev(self, "can't map registers\n" ); |
| 209 | return; |
| 210 | } |
| 211 | |
| 212 | /* Allocate interrupt */ |
| 213 | if (pci_intr_map(pa, &ih)) { |
| 214 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
| 215 | return; |
| 216 | } |
| 217 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
| 218 | psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc); |
| 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 | |