if_rtk_pci.c revision 1.31
1 /* $NetBSD: if_rtk_pci.c,v 1.31 2007/02/25 04:19:32 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998 5 * Bill Paul <wpaul (at) 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 (at) 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 1.31 2007/02/25 04:19:32 tsutsui 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 <machine/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; /* PCI chipset */ 86 pcitag_t sc_pcitag; /* PCI tag */ 87 88 void *sc_powerhook; /* powerhook ctxt. */ 89 struct pci_conf_state sc_pciconf; 90 }; 91 92 static const struct rtk_type rtk_pci_devs[] = { 93 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129, 94 RTK_8129, "Realtek 8129 10/100BaseTX" }, 95 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139, 96 RTK_8139, "Realtek 8139 10/100BaseTX" }, 97 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030, 98 RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" }, 99 { PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139, 100 RTK_8139, "Delta Electronics 8139 10/100BaseTX" }, 101 { PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139, 102 RTK_8139, "Addtron Technology 8139 10/100BaseTX" }, 103 { PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND, 104 RTK_8139, "SEGA Broadband Adapter" }, 105 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS, 106 RTK_8139, "D-Link Systems DFE 530TX+" }, 107 { PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21, 108 RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" }, 109 { 0, 0, 0, NULL } 110 }; 111 112 static int rtk_pci_match(struct device *, struct cfdata *, void *); 113 static void rtk_pci_attach(struct device *, struct device *, void *); 114 static void rtk_pci_powerhook(int, void *); 115 116 CFATTACH_DECL(rtk_pci, sizeof(struct rtk_pci_softc), 117 rtk_pci_match, rtk_pci_attach, NULL, NULL); 118 119 static const struct rtk_type * 120 rtk_pci_lookup(const struct pci_attach_args *pa) 121 { 122 const struct rtk_type *t; 123 124 for (t = rtk_pci_devs; t->rtk_name != NULL; t++) { 125 if (PCI_VENDOR(pa->pa_id) == t->rtk_vid && 126 PCI_PRODUCT(pa->pa_id) == t->rtk_did) { 127 return (t); 128 } 129 } 130 return (NULL); 131 } 132 133 static int 134 rtk_pci_match(struct device *parent, struct cfdata *match, 135 void *aux) 136 { 137 struct pci_attach_args *pa = aux; 138 139 if (rtk_pci_lookup(pa) != NULL) 140 return (1); 141 142 return (0); 143 } 144 145 /* 146 * Attach the interface. Allocate softc structures, do ifmedia 147 * setup and ethernet/BPF attach. 148 */ 149 static void 150 rtk_pci_attach(struct device *parent, struct device *self, void *aux) 151 { 152 struct rtk_pci_softc *psc = (struct rtk_pci_softc *)self; 153 struct rtk_softc *sc = &psc->sc_rtk; 154 pcireg_t command; 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 const char *intrstr = NULL; 161 const struct rtk_type *t; 162 int pmreg; 163 int ioh_valid, memh_valid; 164 165 psc->sc_pc = pa->pa_pc; 166 psc->sc_pcitag = pa->pa_tag; 167 168 t = rtk_pci_lookup(pa); 169 if (t == NULL) { 170 printf("\n"); 171 panic("rtk_pci_attach: impossible"); 172 } 173 printf(": %s (rev. 0x%02x)\n", t->rtk_name, PCI_REVISION(pa->pa_class)); 174 175 /* 176 * Handle power management nonsense. 177 */ 178 179 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 180 command = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 181 if (command & PCI_PMCSR_STATE_MASK) { 182 pcireg_t iobase, membase, irq; 183 184 /* Save important PCI config data. */ 185 iobase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOIO); 186 membase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOMEM); 187 irq = pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG); 188 189 /* Reset the power state. */ 190 printf("%s: chip is in D%d power mode " 191 "-- setting to D0\n", sc->sc_dev.dv_xname, 192 command & PCI_PMCSR_STATE_MASK); 193 command &= ~PCI_PMCSR_STATE_MASK; 194 pci_conf_write(pc, pa->pa_tag, 195 pmreg + PCI_PMCSR, command); 196 197 /* Restore PCI config data. */ 198 pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOIO, iobase); 199 pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOMEM, membase); 200 pci_conf_write(pc, pa->pa_tag, PCI_INTERRUPT_REG, irq); 201 } 202 } 203 204 /* 205 * Map control/status registers. 206 * 207 * The original FreeBSD's driver has the following comment: 208 * 209 * Default to using PIO access for this driver. On SMP systems, 210 * there appear to be problems with memory mapped mode: 211 * it looks like doing too many memory mapped access 212 * back to back in rapid succession can hang the bus. 213 * I'm inclined to blame this on crummy design/construction 214 * on the part of Realtek. Memory mapped mode does appear to 215 * work on uniprocessor systems though. 216 * 217 * On NetBSD, some port doesn't support PCI I/O space properly, 218 * so we try to map both and prefer I/O space to mem space. 219 */ 220 ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 221 &iot, &ioh, NULL, NULL) == 0); 222 memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 223 &memt, &memh, NULL, NULL) == 0); 224 if (ioh_valid) { 225 sc->rtk_btag = iot; 226 sc->rtk_bhandle = ioh; 227 } else if (memh_valid) { 228 sc->rtk_btag = memt; 229 sc->rtk_bhandle = memh; 230 } else { 231 aprint_error("%s: can't map registers\n", sc->sc_dev.dv_xname); 232 return; 233 } 234 235 /* Allocate interrupt */ 236 if (pci_intr_map(pa, &ih)) { 237 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 238 return; 239 } 240 intrstr = pci_intr_string(pc, ih); 241 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc); 242 if (psc->sc_ih == NULL) { 243 printf("%s: couldn't establish interrupt", 244 sc->sc_dev.dv_xname); 245 if (intrstr != NULL) 246 printf(" at %s", intrstr); 247 printf("\n"); 248 return; 249 } 250 251 sc->rtk_type = t->rtk_basetype; 252 253 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 254 255 sc->sc_dmat = pa->pa_dmat; 256 sc->sc_flags |= RTK_ENABLED; 257 258 psc->sc_powerhook = powerhook_establish(sc->sc_dev.dv_xname, 259 rtk_pci_powerhook, psc); 260 if (psc->sc_powerhook == NULL) 261 printf("%s: WARNING: unable to establish pci power hook\n", 262 sc->sc_dev.dv_xname); 263 264 rtk_attach(sc); 265 } 266 267 static void 268 rtk_pci_powerhook(int why, void *arg) 269 { 270 struct rtk_pci_softc *sc = (struct rtk_pci_softc *)arg; 271 int s; 272 273 s = splnet(); 274 switch (why) { 275 case PWR_SUSPEND: 276 case PWR_STANDBY: 277 pci_conf_capture(sc->sc_pc, sc->sc_pcitag, &sc->sc_pciconf); 278 break; 279 case PWR_RESUME: 280 pci_conf_restore(sc->sc_pc, sc->sc_pcitag, &sc->sc_pciconf); 281 break; 282 case PWR_SOFTSUSPEND: 283 case PWR_SOFTSTANDBY: 284 case PWR_SOFTRESUME: 285 break; 286 } 287 splx(s); 288 } 289
Indexes created Sun Oct 12 09:09:55 GMT 2025