| 1 | /* $NetBSD: if_le_pci.c,v 1.52 2014/03/29 19:28:24 christos 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 1.52 2014/03/29 19:28:24 christos 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 | |
| 96 | static int le_pci_match(device_t, cfdata_t, void *); |
| 97 | static void le_pci_attach(device_t, device_t, void *); |
| 98 | static int le_pci_mediachange(struct lance_softc *); |
| 99 | |
| 100 | CFATTACH_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 | |
| 111 | static 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 | |
| 120 | static void |
| 121 | le_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 | |
| 131 | static uint16_t |
| 132 | le_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 | |
| 144 | static int |
| 145 | le_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 | |
| 206 | static int |
| 207 | le_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 | |
| 222 | static void |
| 223 | le_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 | char intrbuf[PCI_INTRSTR_LEN]; |
| 238 | |
| 239 | sc->sc_dev = self; |
| 240 | |
| 241 | switch (PCI_PRODUCT(pa->pa_id)) { |
| 242 | case PCI_PRODUCT_AMD_PCNET_PCI: |
| 243 | model = "PCnet-PCI Ethernet" ; |
| 244 | lesc->sc_rap = PCNET_PCI_RAP; |
| 245 | lesc->sc_rdp = PCNET_PCI_RDP; |
| 246 | break; |
| 247 | |
| 248 | default: |
| 249 | model = "unknown model!" ; |
| 250 | } |
| 251 | |
| 252 | aprint_normal(": %s\n" , model); |
| 253 | |
| 254 | if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, |
| 255 | &iot, &ioh, NULL, NULL)) { |
| 256 | aprint_error_dev(self, "can't map I/O space\n" ); |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * Extract the physical MAC address from the ROM. |
| 262 | */ |
| 263 | for (i = 0; i < sizeof(sc->sc_enaddr); i++) |
| 264 | sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); |
| 265 | |
| 266 | lesc->sc_iot = iot; |
| 267 | lesc->sc_ioh = ioh; |
| 268 | lesc->sc_dmat = dmat; |
| 269 | |
| 270 | /* |
| 271 | * Allocate a DMA area for the card. |
| 272 | */ |
| 273 | if (bus_dmamem_alloc(dmat, LE_PCI_MEMSIZE, PAGE_SIZE, 0, &seg, 1, |
| 274 | &rseg, BUS_DMA_NOWAIT)) { |
| 275 | aprint_error_dev(self, "couldn't allocate memory for card\n" ); |
| 276 | return; |
| 277 | } |
| 278 | if (bus_dmamem_map(dmat, &seg, rseg, LE_PCI_MEMSIZE, |
| 279 | (void **)&sc->sc_mem, |
| 280 | BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { |
| 281 | aprint_error_dev(self, "couldn't map memory for card\n" ); |
| 282 | return; |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * Create and load the DMA map for the DMA area. |
| 287 | */ |
| 288 | if (bus_dmamap_create(dmat, LE_PCI_MEMSIZE, 1, |
| 289 | LE_PCI_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { |
| 290 | aprint_error_dev(self, "couldn't create DMA map\n" ); |
| 291 | bus_dmamem_free(dmat, &seg, rseg); |
| 292 | return; |
| 293 | } |
| 294 | if (bus_dmamap_load(dmat, lesc->sc_dmam, |
| 295 | sc->sc_mem, LE_PCI_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { |
| 296 | aprint_error_dev(self, "coundn't load DMA map\n" ); |
| 297 | bus_dmamem_free(dmat, &seg, rseg); |
| 298 | return; |
| 299 | } |
| 300 | |
| 301 | sc->sc_conf3 = 0; |
| 302 | sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; |
| 303 | sc->sc_memsize = LE_PCI_MEMSIZE; |
| 304 | |
| 305 | sc->sc_copytodesc = lance_copytobuf_contig; |
| 306 | sc->sc_copyfromdesc = lance_copyfrombuf_contig; |
| 307 | sc->sc_copytobuf = lance_copytobuf_contig; |
| 308 | sc->sc_copyfrombuf = lance_copyfrombuf_contig; |
| 309 | sc->sc_zerobuf = lance_zerobuf_contig; |
| 310 | |
| 311 | sc->sc_rdcsr = le_pci_rdcsr; |
| 312 | sc->sc_wrcsr = le_pci_wrcsr; |
| 313 | sc->sc_hwinit = NULL; |
| 314 | |
| 315 | sc->sc_supmedia = le_pci_supmedia; |
| 316 | sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); |
| 317 | sc->sc_defaultmedia = le_pci_supmedia[0]; |
| 318 | sc->sc_mediachange = le_pci_mediachange; |
| 319 | lesc->sc_currentmedia = le_pci_supmedia[0]; |
| 320 | |
| 321 | aprint_normal("%s" , device_xname(self)); |
| 322 | am79900_config(&lesc->sc_am79900); |
| 323 | |
| 324 | /* Chip is stopped. Set "software style" to 32-bit. */ |
| 325 | bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 20); |
| 326 | bus_space_write_2(iot, ioh, PCNET_PCI_BDP, 2); |
| 327 | |
| 328 | /* Enable the card. */ |
| 329 | csr = pci_conf_read(pc, pa->pa_tag, |
| 330 | PCI_COMMAND_STATUS_REG); |
| 331 | pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, |
| 332 | csr | PCI_COMMAND_MASTER_ENABLE); |
| 333 | |
| 334 | /* Map and establish the interrupt. */ |
| 335 | if (pci_intr_map(pa, &ih)) { |
| 336 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
| 337 | return; |
| 338 | } |
| 339 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
| 340 | lesc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, am79900_intr, sc); |
| 341 | if (lesc->sc_ih == NULL) { |
| 342 | aprint_error_dev(self, "couldn't establish interrupt" ); |
| 343 | if (intrstr != NULL) |
| 344 | aprint_error(" at %s" , intrstr); |
| 345 | aprint_error("\n" ); |
| 346 | return; |
| 347 | } |
| 348 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 349 | } |
| 350 | |