if_rl_cardbus.c revision 1.31
1/* $OpenBSD: if_rl_cardbus.c,v 1.31 2020/06/17 10:48:44 claudio Exp $ */ 2/* $NetBSD: if_rl_cardbus.c,v 1.3.8.3 2001/11/14 19:14:02 nathanw Exp $ */ 3 4/* 5 * Copyright (c) 2000 Masanori Kanaoka 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* 32 * if_rl_cardbus.c: 33 * Cardbus specific routines for Realtek 8139 ethernet adapter. 34 * Tested for 35 * - elecom-Laneed LD-10/100CBA (Accton MPX5030) 36 * - MELCO LPC3-TX-CB (Realtek 8139) 37 */ 38 39#include "bpfilter.h" 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/mbuf.h> 44#include <sys/socket.h> 45#include <sys/ioctl.h> 46#include <sys/errno.h> 47#include <sys/malloc.h> 48#include <sys/kernel.h> 49#include <sys/timeout.h> 50#include <sys/device.h> 51#include <sys/endian.h> 52 53#include <net/if.h> 54#include <net/if_media.h> 55 56#if NBPFILTER > 0 57#include <net/bpf.h> 58#endif 59 60#include <netinet/in.h> 61#include <netinet/if_ether.h> 62 63#include <machine/bus.h> 64#include <machine/intr.h> 65 66#include <dev/mii/miivar.h> 67 68#include <dev/pci/pcivar.h> 69#include <dev/pci/pcireg.h> 70#include <dev/pci/pcidevs.h> 71 72#include <dev/cardbus/cardbusvar.h> 73 74/* 75 * Default to using PIO access for this driver. On SMP systems, 76 * there appear to be problems with memory mapped mode: it looks like 77 * doing too many memory mapped access back to back in rapid succession 78 * can hang the bus. I'm inclined to blame this on crummy design/construction 79 * on the part of Realtek. Memory mapped mode does appear to work on 80 * uniprocessor systems though. 81 */ 82#define RL_USEIOSPACE 83 84#include <dev/ic/rtl81x9reg.h> 85 86/* 87 * Various supported device vendors/types and their names. 88 */ 89const struct pci_matchid rl_cardbus_devices[] = { 90 { PCI_VENDOR_ABOCOM, PCI_PRODUCT_ABOCOM_FE2000VX }, 91 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_5030 }, 92 { PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_2CB_TXD }, 93 { PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_CB_TXD }, 94 { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE690TXD }, 95 { PCI_VENDOR_PLANEX, PCI_PRODUCT_PLANEX_FNW_3603_TX }, 96 { PCI_VENDOR_PLANEX, PCI_PRODUCT_PLANEX_FNW_3800_TX }, 97 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138 }, 98 { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139 }, 99}; 100 101struct rl_cardbus_softc { 102 struct rl_softc sc_rl; /* real rtk softc */ 103 104 /* CardBus-specific goo. */ 105 cardbus_devfunc_t sc_ct; 106 pci_chipset_tag_t sc_pc; 107 pcitag_t sc_tag; 108 int sc_csr; 109 int sc_cben; 110 int sc_bar_reg; 111 pcireg_t sc_bar_val; 112 bus_size_t sc_mapsize; 113 int sc_intrline; 114}; 115 116static int rl_cardbus_match(struct device *, void *, void *); 117static void rl_cardbus_attach(struct device *, struct device *, void *); 118static int rl_cardbus_detach(struct device *, int); 119void rl_cardbus_setup(struct rl_cardbus_softc *); 120 121struct cfattach rl_cardbus_ca = { 122 sizeof(struct rl_cardbus_softc), rl_cardbus_match, rl_cardbus_attach, 123 rl_cardbus_detach 124}; 125 126int 127rl_cardbus_match(struct device *parent, void *match, void *aux) 128{ 129 return (cardbus_matchbyid((struct cardbus_attach_args *)aux, 130 rl_cardbus_devices, nitems(rl_cardbus_devices))); 131} 132 133 134void 135rl_cardbus_attach(struct device *parent, struct device *self, void *aux) 136{ 137 struct rl_cardbus_softc *csc = 138 (struct rl_cardbus_softc *)self; 139 struct rl_softc *sc = &csc->sc_rl; 140 struct cardbus_attach_args *ca = aux; 141 struct cardbus_softc *psc = 142 (struct cardbus_softc *)sc->sc_dev.dv_parent; 143 cardbus_chipset_tag_t cc = psc->sc_cc; 144 cardbus_function_tag_t cf = psc->sc_cf; 145 cardbus_devfunc_t ct = ca->ca_ct; 146 bus_addr_t adr; 147 148 sc->sc_dmat = ca->ca_dmat; 149 csc->sc_ct = ct; 150 csc->sc_tag = ca->ca_tag; 151 csc->sc_intrline = ca->ca_intrline; 152 csc->sc_pc = ca->ca_pc; 153 154 /* 155 * Map control/status registers. 156 */ 157 csc->sc_csr = PCI_COMMAND_MASTER_ENABLE; 158#ifdef RL_USEIOSPACE 159 if (Cardbus_mapreg_map(ct, RL_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 160 &sc->rl_btag, &sc->rl_bhandle, &adr, &csc->sc_mapsize) == 0) { 161 csc->sc_cben = CARDBUS_IO_ENABLE; 162 csc->sc_csr |= PCI_COMMAND_IO_ENABLE; 163 csc->sc_bar_reg = RL_PCI_LOIO; 164 csc->sc_bar_val = adr | PCI_MAPREG_TYPE_IO; 165 } 166#else 167 if (Cardbus_mapreg_map(ct, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 168 &sc->rl_btag, &sc->rl_bhandle, &adr, &csc->sc_mapsize) == 0) { 169 csc->sc_cben = CARDBUS_MEM_ENABLE; 170 csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; 171 csc->sc_bar_reg = RL_PCI_LOMEM; 172 csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM; 173 } 174#endif 175 else { 176 printf("%s: unable to map deviceregisters\n", 177 sc->sc_dev.dv_xname); 178 return; 179 } 180 181 Cardbus_function_enable(ct); 182 183 rl_cardbus_setup(csc); 184 185 /* 186 * Map and establish the interrupt. 187 */ 188 sc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, 189 rl_intr, sc, sc->sc_dev.dv_xname); 190 if (sc->sc_ih == NULL) { 191 printf(": couldn't establish interrupt\n"); 192 Cardbus_function_disable(csc->sc_ct); 193 return; 194 } 195 printf(": irq %d", csc->sc_intrline); 196 197 sc->rl_type = RL_8139; 198 199 rl_attach(sc); 200} 201 202int 203rl_cardbus_detach(struct device *self, int flags) 204{ 205 struct rl_cardbus_softc *csc = (void *) self; 206 struct rl_softc *sc = &csc->sc_rl; 207 struct cardbus_devfunc *ct = csc->sc_ct; 208 int rv; 209 210#ifdef DIAGNOSTIC 211 if (ct == NULL) 212 panic("%s: data structure lacks", sc->sc_dev.dv_xname); 213#endif 214 rv = rl_detach(sc); 215 if (rv) 216 return (rv); 217 /* 218 * Unhook the interrupt handler. 219 */ 220 if (sc->sc_ih != NULL) 221 cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, sc->sc_ih); 222 223 /* 224 * Release bus space and close window. 225 */ 226 if (csc->sc_bar_reg != 0) 227 Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, 228 sc->rl_btag, sc->rl_bhandle, csc->sc_mapsize); 229 230 return (0); 231} 232 233void 234rl_cardbus_setup(struct rl_cardbus_softc *csc) 235{ 236 struct rl_softc *sc = &csc->sc_rl; 237 cardbus_devfunc_t ct = csc->sc_ct; 238 cardbus_chipset_tag_t cc = ct->ct_cc; 239 pci_chipset_tag_t pc = csc->sc_pc; 240 pcireg_t reg, command; 241 int pmreg; 242 243 /* 244 * Handle power management nonsense. 245 */ 246 if (pci_get_capability(pc, csc->sc_tag, 247 PCI_CAP_PWRMGMT, &pmreg, 0)) { 248 command = pci_conf_read(pc, csc->sc_tag, pmreg + 4); 249 if (command & RL_PSTATE_MASK) { 250 pcireg_t iobase, membase, irq; 251 252 /* Save important PCI config data. */ 253 iobase = pci_conf_read(pc, csc->sc_tag, 254 RL_PCI_LOIO); 255 membase = pci_conf_read(pc, csc->sc_tag, 256 RL_PCI_LOMEM); 257 irq = pci_conf_read(pc, csc->sc_tag, 258 PCI_PRODUCT_DELTA_8139); 259 260 /* Reset the power state. */ 261 printf("%s: chip is in D%d power mode " 262 "-- setting to D0\n", sc->sc_dev.dv_xname, 263 command & RL_PSTATE_MASK); 264 command &= 0xFFFFFFFC; 265 pci_conf_write(pc, csc->sc_tag, 266 pmreg + 4, command); 267 268 /* Restore PCI config data. */ 269 pci_conf_write(pc, csc->sc_tag, 270 RL_PCI_LOIO, iobase); 271 pci_conf_write(pc, csc->sc_tag, 272 RL_PCI_LOMEM, membase); 273 pci_conf_write(pc, csc->sc_tag, 274 PCI_PRODUCT_DELTA_8139, irq); 275 } 276 } 277 278 /* Make sure the right access type is on the CardBus bridge. */ 279 (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben); 280 (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE); 281 282 /* Program the BAR */ 283 pci_conf_write(pc, csc->sc_tag, 284 csc->sc_bar_reg, csc->sc_bar_val); 285 286 /* Enable the appropriate bits in the CARDBUS CSR. */ 287 reg = pci_conf_read(pc, csc->sc_tag, 288 PCI_COMMAND_STATUS_REG); 289 reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE); 290 reg |= csc->sc_csr; 291 pci_conf_write(pc, csc->sc_tag, 292 PCI_COMMAND_STATUS_REG, reg); 293 294 /* 295 * Make sure the latency timer is set to some reasonable 296 * value. 297 */ 298 reg = pci_conf_read(pc, csc->sc_tag, PCI_BHLC_REG); 299 if (PCI_LATTIMER(reg) < 0x20) { 300 reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); 301 reg |= (0x20 << PCI_LATTIMER_SHIFT); 302 pci_conf_write(pc, csc->sc_tag, PCI_BHLC_REG, reg); 303 } 304} 305 306