if_rtk_pci.c revision 1.34
1 /* $NetBSD: if_rtk_pci.c,v 1.34 2007/11/06 02:29:19 uwe 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 1.34 2007/11/06 02:29:19 uwe 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; /* 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(device_t, struct cfdata *, void *); 113 static void rtk_pci_attach(device_t, device_t, 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(device_t 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(device_t parent, device_t self, void *aux) 151 { 152 struct rtk_pci_softc *psc = device_private(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 } 173 174 aprint_naive("\n"); 175 aprint_normal(": %s (rev. 0x%02x)\n", 176 t->rtk_name, PCI_REVISION(pa->pa_class)); 177 178 /* 179 * Handle power management nonsense. 180 */ 181 182 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 183 command = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 184 if (command & PCI_PMCSR_STATE_MASK) { 185 pcireg_t iobase, membase, irq; 186 187 /* Save important PCI config data. */ 188 iobase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOIO); 189 membase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOMEM); 190 irq = pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG); 191 192 /* Reset the power state. */ 193 aprint_normal_dev(self, 194 "chip is in D%d power mode -- setting to D0\n", 195 command & PCI_PMCSR_STATE_MASK); 196 command &= ~PCI_PMCSR_STATE_MASK; 197 pci_conf_write(pc, pa->pa_tag, 198 pmreg + PCI_PMCSR, command); 199 200 /* Restore PCI config data. */ 201 pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOIO, iobase); 202 pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOMEM, membase); 203 pci_conf_write(pc, pa->pa_tag, PCI_INTERRUPT_REG, irq); 204 } 205 } 206 207 /* 208 * Map control/status registers. 209 * 210 * The original FreeBSD's driver has the following comment: 211 * 212 * Default to using PIO access for this driver. On SMP systems, 213 * there appear to be problems with memory mapped mode: 214 * it looks like doing too many memory mapped access 215 * back to back in rapid succession can hang the bus. 216 * I'm inclined to blame this on crummy design/construction 217 * on the part of Realtek. Memory mapped mode does appear to 218 * work on uniprocessor systems though. 219 * 220 * On NetBSD, some port doesn't support PCI I/O space properly, 221 * so we try to map both and prefer I/O space to mem space. 222 */ 223 ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 224 &iot, &ioh, NULL, NULL) == 0); 225 memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 226 &memt, &memh, NULL, NULL) == 0); 227 if (ioh_valid) { 228 sc->rtk_btag = iot; 229 sc->rtk_bhandle = ioh; 230 } else if (memh_valid) { 231 sc->rtk_btag = memt; 232 sc->rtk_bhandle = memh; 233 } else { 234 aprint_error_dev(self, "can't map registers\n"); 235 return; 236 } 237 238 /* Allocate interrupt */ 239 if (pci_intr_map(pa, &ih)) { 240 aprint_error_dev(self, "couldn't map interrupt\n"); 241 return; 242 } 243 intrstr = pci_intr_string(pc, ih); 244 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc); 245 if (psc->sc_ih == NULL) { 246 aprint_error_dev(self, "couldn't establish interrupt"); 247 if (intrstr != NULL) 248 aprint_normal(" at %s", intrstr); 249 aprint_normal("\n"); 250 return; 251 } 252 253 if (t->rtk_basetype == RTK_8129) 254 sc->sc_quirk |= RTKQ_8129; 255 256 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 257 258 sc->sc_dmat = pa->pa_dmat; 259 sc->sc_flags |= RTK_ENABLED; 260 261 psc->sc_powerhook = powerhook_establish(device_xname(self), 262 rtk_pci_powerhook, psc); 263 if (psc->sc_powerhook == NULL) 264 aprint_error_dev(self, 265 "WARNING: unable to establish pci power hook\n"); 266 267 rtk_attach(sc); 268 } 269 270 static void 271 rtk_pci_powerhook(int why, void *arg) 272 { 273 struct rtk_pci_softc *sc = (struct rtk_pci_softc *)arg; 274 int s; 275 276 s = splnet(); 277 switch (why) { 278 case PWR_SUSPEND: 279 case PWR_STANDBY: 280 pci_conf_capture(sc->sc_pc, sc->sc_pcitag, &sc->sc_pciconf); 281 break; 282 case PWR_RESUME: 283 pci_conf_restore(sc->sc_pc, sc->sc_pcitag, &sc->sc_pciconf); 284 break; 285 case PWR_SOFTSUSPEND: 286 case PWR_SOFTSTANDBY: 287 case PWR_SOFTRESUME: 288 break; 289 } 290 splx(s); 291 } 292
Indexes created Sun Oct 12 09:09:55 GMT 2025