1/* $NetBSD: if_le_pci.c,v 1.50 2010/11/13 13:52:06 uebayasi Exp $ */ 2 3/*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/*- 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Ralph Campbell and Rick Macklem. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 65 */ 66 67#include <sys/cdefs.h> 68__KERNEL_RCSID(0, "$NetBSD: if_le_pci.c,v 1.50 2010/11/13 13:52:06 uebayasi Exp $"); 69 70#include <sys/param.h> 71#include <sys/systm.h> 72#include <sys/mbuf.h> 73#include <sys/syslog.h> 74#include <sys/socket.h> 75#include <sys/device.h> 76 77#include <net/if.h> 78#include <net/if_ether.h> 79#include <net/if_media.h> 80 81#include <sys/cpu.h> 82#include <sys/bus.h> 83#include <sys/intr.h> 84 85#include <dev/pci/pcireg.h> 86#include <dev/pci/pcivar.h> 87#include <dev/pci/pcidevs.h> 88 89#include <dev/ic/lancereg.h> 90#include <dev/ic/lancevar.h> 91#include <dev/ic/am79900reg.h> 92#include <dev/ic/am79900var.h> 93 94#include <dev/pci/if_levar.h> 95 96static int le_pci_match(device_t, cfdata_t, void *); 97static void le_pci_attach(device_t, device_t, void *); 98static int le_pci_mediachange(struct lance_softc *); 99 100CFATTACH_DECL_NEW(le_pci, sizeof(struct le_softc), 101 le_pci_match, le_pci_attach, NULL, NULL); 102 103/* 104 * PCI constants. 105 * XXX These should be in a common file! 106 */ 107#define PCI_CBIO PCI_BAR(0) /* Configuration Base IO Address */ 108 109#define LE_PCI_MEMSIZE 16384 110 111static int le_pci_supmedia[] = { 112 IFM_ETHER|IFM_AUTO, 113 IFM_ETHER|IFM_AUTO|IFM_FDX, 114 IFM_ETHER|IFM_10_T, 115 IFM_ETHER|IFM_10_T|IFM_FDX, 116 IFM_ETHER|IFM_10_5, 117 IFM_ETHER|IFM_10_5|IFM_FDX, 118}; 119 120static void 121le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 122{ 123 struct le_softc *lesc = (struct le_softc *)sc; 124 bus_space_tag_t iot = lesc->sc_iot; 125 bus_space_handle_t ioh = lesc->sc_ioh; 126 127 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 128 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 129} 130 131static uint16_t 132le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 133{ 134 struct le_softc *lesc = (struct le_softc *)sc; 135 bus_space_tag_t iot = lesc->sc_iot; 136 bus_space_handle_t ioh = lesc->sc_ioh; 137 uint16_t val; 138 139 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 140 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 141 return (val); 142} 143 144static int 145le_pci_mediachange(struct lance_softc *sc) 146{ 147 struct le_softc *lesc = (struct le_softc *)sc; 148 bus_space_tag_t iot = lesc->sc_iot; 149 bus_space_handle_t ioh = lesc->sc_ioh; 150 int newmedia = sc->sc_media.ifm_media; 151 uint16_t reg; 152 153 if (IFM_SUBTYPE(newmedia) != 154 IFM_SUBTYPE(lesc->sc_currentmedia)) { 155 if (IFM_SUBTYPE(newmedia) == IFM_AUTO) { 156 /* switch to autoselect - BCR2 bit 1 */ 157 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2); 158 reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP); 159 reg |= 2; 160 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2); 161 bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg); 162 } else { 163 /* force media type (in init block) */ 164 lance_reset(sc); 165 if (IFM_SUBTYPE(newmedia) == IFM_10_T) 166 sc->sc_initmodemedia = 1; /* UTP */ 167 else 168 sc->sc_initmodemedia = 0; /* AUI */ 169 lance_init(&sc->sc_ethercom.ec_if); 170 171 if (IFM_SUBTYPE(lesc->sc_currentmedia) == IFM_AUTO) { 172 /* take away autoselect - BCR2 bit 1 */ 173 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2); 174 reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP); 175 reg &= ~2; 176 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2); 177 bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg); 178 } 179 } 180 181 } 182 183 if ((IFM_OPTIONS(newmedia) ^ IFM_OPTIONS(lesc->sc_currentmedia)) 184 & IFM_FDX) { 185 /* toggle full duplex - BCR9 */ 186 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9); 187 reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP); 188 if (IFM_OPTIONS(newmedia) & IFM_FDX) { 189 reg |= 1; /* FDEN */ 190 /* allow FDX on AUI only if explicitly chosen, 191 not in autoselect mode */ 192 if (IFM_SUBTYPE(newmedia) == IFM_10_5) 193 reg |= 2; /* AUIFD */ 194 else 195 reg &= ~2; 196 } else 197 reg &= ~1; 198 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9); 199 bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg); 200 } 201 202 lesc->sc_currentmedia = newmedia; 203 return (0); 204} 205 206static int 207le_pci_match(device_t parent, cfdata_t cf, void *aux) 208{ 209 struct pci_attach_args *pa = aux; 210 211 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_AMD) 212 return (0); 213 214 switch (PCI_PRODUCT(pa->pa_id)) { 215 case PCI_PRODUCT_AMD_PCNET_PCI: 216 return (1); 217 } 218 219 return (0); 220} 221 222static void 223le_pci_attach(device_t parent, device_t self, void *aux) 224{ 225 struct le_softc *lesc = device_private(self); 226 struct lance_softc *sc = &lesc->sc_am79900.lsc; 227 struct pci_attach_args *pa = aux; 228 pci_intr_handle_t ih; 229 bus_space_tag_t iot; 230 bus_space_handle_t ioh; 231 bus_dma_tag_t dmat = pa->pa_dmat; 232 bus_dma_segment_t seg; 233 pci_chipset_tag_t pc = pa->pa_pc; 234 pcireg_t csr; 235 int i, rseg; 236 const char *model, *intrstr; 237 238 sc->sc_dev = self; 239 240 switch (PCI_PRODUCT(pa->pa_id)) { 241 case PCI_PRODUCT_AMD_PCNET_PCI: 242 model = "PCnet-PCI Ethernet"; 243 lesc->sc_rap = PCNET_PCI_RAP; 244 lesc->sc_rdp = PCNET_PCI_RDP; 245 break; 246 247 default: 248 model = "unknown model!"; 249 } 250 251 aprint_normal(": %s\n", model); 252 253 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 254 &iot, &ioh, NULL, NULL)) { 255 aprint_error_dev(self, "can't map I/O space\n"); 256 return; 257 } 258 259 /* 260 * Extract the physical MAC address from the ROM. 261 */ 262 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 263 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 264 265 lesc->sc_iot = iot; 266 lesc->sc_ioh = ioh; 267 lesc->sc_dmat = dmat; 268 269 /* 270 * Allocate a DMA area for the card. 271 */ 272 if (bus_dmamem_alloc(dmat, LE_PCI_MEMSIZE, PAGE_SIZE, 0, &seg, 1, 273 &rseg, BUS_DMA_NOWAIT)) { 274 aprint_error_dev(self, "couldn't allocate memory for card\n"); 275 return; 276 } 277 if (bus_dmamem_map(dmat, &seg, rseg, LE_PCI_MEMSIZE, 278 (void **)&sc->sc_mem, 279 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 280 aprint_error_dev(self, "couldn't map memory for card\n"); 281 return; 282 } 283 284 /* 285 * Create and load the DMA map for the DMA area. 286 */ 287 if (bus_dmamap_create(dmat, LE_PCI_MEMSIZE, 1, 288 LE_PCI_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 289 aprint_error_dev(self, "couldn't create DMA map\n"); 290 bus_dmamem_free(dmat, &seg, rseg); 291 return; 292 } 293 if (bus_dmamap_load(dmat, lesc->sc_dmam, 294 sc->sc_mem, LE_PCI_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 295 aprint_error_dev(self, "coundn't load DMA map\n"); 296 bus_dmamem_free(dmat, &seg, rseg); 297 return; 298 } 299 300 sc->sc_conf3 = 0; 301 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 302 sc->sc_memsize = LE_PCI_MEMSIZE; 303 304 sc->sc_copytodesc = lance_copytobuf_contig; 305 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 306 sc->sc_copytobuf = lance_copytobuf_contig; 307 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 308 sc->sc_zerobuf = lance_zerobuf_contig; 309 310 sc->sc_rdcsr = le_pci_rdcsr; 311 sc->sc_wrcsr = le_pci_wrcsr; 312 sc->sc_hwinit = NULL; 313 314 sc->sc_supmedia = le_pci_supmedia; 315 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 316 sc->sc_defaultmedia = le_pci_supmedia[0]; 317 sc->sc_mediachange = le_pci_mediachange; 318 lesc->sc_currentmedia = le_pci_supmedia[0]; 319 320 aprint_normal("%s", device_xname(self)); 321 am79900_config(&lesc->sc_am79900); 322 323 /* Chip is stopped. Set "software style" to 32-bit. */ 324 bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 20); 325 bus_space_write_2(iot, ioh, PCNET_PCI_BDP, 2); 326 327 /* Enable the card. */ 328 csr = pci_conf_read(pc, pa->pa_tag, 329 PCI_COMMAND_STATUS_REG); 330 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 331 csr | PCI_COMMAND_MASTER_ENABLE); 332 333 /* Map and establish the interrupt. */ 334 if (pci_intr_map(pa, &ih)) { 335 aprint_error_dev(self, "couldn't map interrupt\n"); 336 return; 337 } 338 intrstr = pci_intr_string(pc, ih); 339 lesc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, am79900_intr, sc); 340 if (lesc->sc_ih == NULL) { 341 aprint_error_dev(self, "couldn't establish interrupt"); 342 if (intrstr != NULL) 343 aprint_error(" at %s", intrstr); 344 aprint_error("\n"); 345 return; 346 } 347 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 348} 349