if_gem_pci.c revision 1.28
1 /* $NetBSD: if_gem_pci.c,v 1.28 2008/04/04 16:26:52 martin Exp $ */ 2 3 /* 4 * 5 * Copyright (C) 2001 Eduardo Horvath. 6 * All rights reserved. 7 * 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * PCI bindings for Apple GMAC, Sun ERI and Sun GEM Ethernet controllers 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_gem_pci.c,v 1.28 2008/04/04 16:26:52 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/malloc.h> 42 #include <sys/kernel.h> 43 #include <sys/socket.h> 44 #include <sys/errno.h> 45 #include <sys/device.h> 46 47 #include <machine/endian.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <net/if.h> 52 #include <net/if_dl.h> 53 #include <net/if_media.h> 54 #include <net/if_ether.h> 55 56 #if NBPFILTER > 0 57 #include <net/bpf.h> 58 #endif 59 60 #include <sys/bus.h> 61 #include <sys/intr.h> 62 63 #include <dev/mii/mii.h> 64 #include <dev/mii/miivar.h> 65 #include <dev/mii/mii_bitbang.h> 66 67 #include <dev/ic/gemreg.h> 68 #include <dev/ic/gemvar.h> 69 70 #include <dev/pci/pcivar.h> 71 #include <dev/pci/pcireg.h> 72 #include <dev/pci/pcidevs.h> 73 74 /* XXX Should use Properties when that's fleshed out. */ 75 #ifdef macppc 76 #include <dev/ofw/openfirm.h> 77 #endif /* macppc */ 78 #ifdef __sparc__ 79 #include <machine/promlib.h> 80 #endif 81 82 #ifndef GEM_USE_LOCAL_MAC_ADDRESS 83 #if defined (macppc) || defined (__sparc__) 84 #define GEM_USE_LOCAL_MAC_ADDRESS 0 /* use system-wide address */ 85 #else 86 #define GEM_USE_LOCAL_MAC_ADDRESS 1 87 #endif 88 #endif 89 90 91 struct gem_pci_softc { 92 struct gem_softc gsc_gem; /* GEM device */ 93 void *gsc_ih; 94 }; 95 96 int gem_match_pci(struct device *, struct cfdata *, void *); 97 void gem_attach_pci(struct device *, struct device *, void *); 98 99 CFATTACH_DECL(gem_pci, sizeof(struct gem_pci_softc), 100 gem_match_pci, gem_attach_pci, NULL, NULL); 101 102 /* 103 * Attach routines need to be split out to different bus-specific files. 104 */ 105 106 int 107 gem_match_pci(parent, cf, aux) 108 struct device *parent; 109 struct cfdata *cf; 110 void *aux; 111 { 112 struct pci_attach_args *pa = aux; 113 114 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 115 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_ERINETWORK || 116 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_GEMNETWORK)) 117 return (1); 118 119 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE && 120 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC || 121 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC2 || 122 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC3 || 123 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_GMAC || 124 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_K2_GMAC || 125 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_INTREPID2_GMAC)) 126 return (1); 127 128 129 return (0); 130 } 131 132 #if GEM_USE_LOCAL_MAC_ADDRESS 133 static inline int 134 gempromvalid(u_int8_t* buf) 135 { 136 return buf[0] == 0x18 && buf[1] == 0x00 && /* structure length */ 137 buf[2] == 0x00 && /* revision */ 138 (buf[3] == 0x00 || /* hme */ 139 buf[3] == 0x80) && /* qfe */ 140 buf[4] == PCI_SUBCLASS_NETWORK_ETHERNET && /* subclass code */ 141 buf[5] == PCI_CLASS_NETWORK; /* class code */ 142 } 143 144 static inline int 145 isshared_pins(u_int8_t* buf) 146 { 147 return buf[0] == 's' && buf[1] == 'h' && buf[2] == 'a' && 148 buf[3] == 'r' && buf[4] == 'e' && buf[5] == 'd' && 149 buf[6] == '-' && buf[7] == 'p' && buf[8] == 'i' && 150 buf[9] == 'n' && buf[10] == 's'; 151 } 152 #endif 153 154 static inline int 155 isserdes(u_int8_t* buf) 156 { 157 return buf[0] == 's' && buf[1] == 'e' && buf[2] == 'r' && 158 buf[3] == 'd' && buf[4] == 'e' && buf[5] == 's'; 159 } 160 161 void 162 gem_attach_pci(parent, self, aux) 163 struct device *parent, *self; 164 void *aux; 165 { 166 struct pci_attach_args *pa = aux; 167 struct gem_pci_softc *gsc = (void *)self; 168 struct gem_softc *sc = &gsc->gsc_gem; 169 pci_intr_handle_t ih; 170 const char *intrstr; 171 char devinfo[256]; 172 uint8_t enaddr[ETHER_ADDR_LEN]; 173 #if GEM_USE_LOCAL_MAC_ADDRESS 174 u_int8_t *enp; 175 bus_space_handle_t romh; 176 u_int8_t buf[0x0800]; 177 int dataoff, vpdoff, serdes; 178 #if GEM_USE_LOCAL_MAC_ADDRESS || defined(GEM_DEBUG) 179 int i; 180 #endif 181 #ifdef GEM_DEBUG 182 int j; 183 #endif 184 struct pci_vpd *vpd; 185 static const u_int8_t promhdr[] = { 0x55, 0xaa }; 186 #define PROMHDR_PTR_DATA 0x18 187 static const u_int8_t promdat[] = { 188 0x50, 0x43, 0x49, 0x52, /* "PCIR" */ 189 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 190 PCI_PRODUCT_SUN_GEMNETWORK & 0xff, 191 PCI_PRODUCT_SUN_GEMNETWORK >> 8 192 }; 193 #define PROMDATA_PTR_VPD 0x08 194 #define PROMDATA_DATA2 0x0a 195 #endif /* GEM_USE_LOCAL_MAC_ADDRESS */ 196 197 aprint_naive(": Ethernet controller\n"); 198 199 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 200 sc->sc_chiprev = PCI_REVISION(pa->pa_class); 201 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, sc->sc_chiprev); 202 203 /* 204 * Some Sun GEMs/ERIs do have their intpin register bogusly set to 0, 205 * although it should be 1. correct that. 206 */ 207 if (pa->pa_intrpin == 0) 208 pa->pa_intrpin = 1; 209 210 sc->sc_variant = GEM_UNKNOWN; 211 212 sc->sc_dmatag = pa->pa_dmat; 213 214 sc->sc_flags |= GEM_PCI; 215 216 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN) { 217 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_GEMNETWORK) 218 sc->sc_variant = GEM_SUN_GEM; 219 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_ERINETWORK) 220 sc->sc_variant = GEM_SUN_ERI; 221 } else if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE) { 222 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC || 223 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC2 || 224 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC3 || 225 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_GMAC || 226 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_INTREPID2_GMAC) 227 sc->sc_variant = GEM_APPLE_GMAC; 228 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_K2_GMAC) 229 sc->sc_variant = GEM_APPLE_K2_GMAC; 230 } 231 232 if (sc->sc_variant == GEM_UNKNOWN) { 233 aprint_error("%s: unknown adaptor\n", sc->sc_dev.dv_xname); 234 return; 235 } 236 237 #define PCI_GEM_BASEADDR (PCI_MAPREG_START + 0x00) 238 239 /* XXX Need to check for a 64-bit mem BAR? */ 240 if (pci_mapreg_map(pa, PCI_GEM_BASEADDR, 241 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, 242 &sc->sc_bustag, &sc->sc_h1, NULL, NULL) != 0) 243 { 244 aprint_error("%s: unable to map device registers\n", 245 sc->sc_dev.dv_xname); 246 return; 247 } 248 if (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 249 GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE, &sc->sc_h2)) { 250 aprint_error("%s: unable to create bank 2 subregion\n", 251 sc->sc_dev.dv_xname); 252 return; 253 } 254 255 #if GEM_USE_LOCAL_MAC_ADDRESS 256 /* 257 * Dig out VPD (vital product data) and acquire Ethernet address. 258 * The VPD of gem resides in the PCI PROM (PCI FCode). 259 */ 260 /* 261 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 262 * chapter 2 describes the data structure. 263 */ 264 265 enp = NULL; 266 267 if (sc->sc_variant == GEM_SUN_GEM && 268 (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 269 GEM_PCI_ROM_OFFSET, GEM_PCI_ROM_SIZE, &romh)) == 0) { 270 271 /* read PCI Expansion PROM Header */ 272 bus_space_read_region_1(sc->sc_bustag, 273 romh, 0, buf, sizeof buf); 274 275 /* Check for "shared-pins = serdes" in FCode. */ 276 i = 0; 277 serdes = 0; 278 while (i < (sizeof buf) - sizeof "serdes") { 279 if (!serdes) { 280 if (isserdes(&buf[i])) 281 serdes = 1; 282 } else { 283 if (isshared_pins(&buf[i])) 284 serdes = 2; 285 } 286 if (serdes == 2) { 287 sc->sc_flags |= GEM_SERDES; 288 break; 289 } 290 i++; 291 } 292 #ifdef GEM_DEBUG 293 /* PROM dump */ 294 printf("%s: PROM dump (0x0000 to %04lx)\n", sc->sc_dev.dv_xname, 295 (sizeof buf) - 1); 296 i = 0; 297 j = 0; 298 printf(" %04x ", i); 299 while (i < sizeof buf) { 300 printf("%02x ", buf[i]); 301 if (i && !(i % 8)) 302 printf(" "); 303 if (i && !(i % 16)) { 304 printf(" "); 305 while (j < i) { 306 if (buf[j] > 31 && buf[j] < 128) 307 printf("%c", buf[j]); 308 else 309 printf("."); 310 j++; 311 } 312 j = i; 313 printf("\n %04x ", i); 314 } 315 i++; 316 } 317 printf("\n"); 318 #endif 319 320 if (memcmp(buf, promhdr, sizeof promhdr) == 0 && 321 (dataoff = (buf[PROMHDR_PTR_DATA] | 322 (buf[PROMHDR_PTR_DATA + 1] << 8))) >= 0x1c) { 323 324 /* read PCI Expansion PROM Data */ 325 bus_space_read_region_1(sc->sc_bustag, romh, dataoff, 326 buf, 64); 327 if (memcmp(buf, promdat, sizeof promdat) == 0 && 328 gempromvalid(buf + PROMDATA_DATA2) && 329 (vpdoff = (buf[PROMDATA_PTR_VPD] | 330 (buf[PROMDATA_PTR_VPD + 1] << 8))) >= 0x1c) { 331 332 /* 333 * The VPD of gem is not in PCI 2.2 standard 334 * format. The length in the resource header 335 * is in big endian, and resources are not 336 * properly terminated (only one resource 337 * and no end tag). 338 */ 339 /* read PCI VPD */ 340 bus_space_read_region_1(sc->sc_bustag, romh, 341 vpdoff, buf, 64); 342 vpd = (void *)(buf + 3); 343 if (PCI_VPDRES_ISLARGE(buf[0]) && 344 PCI_VPDRES_LARGE_NAME(buf[0]) 345 == PCI_VPDRES_TYPE_VPD && 346 vpd->vpd_key0 == 0x4e /* N */ && 347 vpd->vpd_key1 == 0x41 /* A */ && 348 vpd->vpd_len == ETHER_ADDR_LEN) { 349 /* 350 * Ethernet address found 351 */ 352 enp = buf + 6; 353 } 354 } 355 } 356 } 357 358 if (enp) 359 memcpy(enaddr, enp, ETHER_ADDR_LEN); 360 else 361 #endif /* GEM_USE_LOCAL_MAC_ADDRESS */ 362 #ifdef __sparc__ 363 { 364 if (strcmp(prom_getpropstring(PCITAG_NODE(pa->pa_tag), 365 "shared-pins"), "serdes") == 0) 366 sc->sc_flags |= GEM_SERDES; 367 prom_getether(PCITAG_NODE(pa->pa_tag), enaddr); 368 } 369 #else 370 #ifdef macppc 371 { 372 int node; 373 char sp[6]; /* "serdes" */ 374 375 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 376 if (node == 0) { 377 aprint_error("%s: unable to locate OpenFirmware node\n", 378 sc->sc_dev.dv_xname); 379 return; 380 } 381 382 OF_getprop(node, "shared-pins", sp, sizeof(sp)); 383 if (isserdes(sp)) 384 sc->sc_flags |= GEM_SERDES; 385 OF_getprop(node, "local-mac-address", enaddr, sizeof(enaddr)); 386 } 387 #else 388 printf("%s: no Ethernet address found\n", sc->sc_dev.dv_xname); 389 #endif /* macppc */ 390 #endif /* __sparc__ */ 391 392 if (pci_intr_map(pa, &ih) != 0) { 393 aprint_error("%s: unable to map interrupt\n", 394 sc->sc_dev.dv_xname); 395 return; 396 } 397 intrstr = pci_intr_string(pa->pa_pc, ih); 398 gsc->gsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, gem_intr, sc); 399 if (gsc->gsc_ih == NULL) { 400 aprint_error("%s: unable to establish interrupt", 401 sc->sc_dev.dv_xname); 402 if (intrstr != NULL) 403 aprint_normal(" at %s", intrstr); 404 aprint_normal("\n"); 405 return; 406 } 407 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 408 409 /* Finish off the attach. */ 410 gem_attach(sc, enaddr); 411 } 412
Indexes created Thu Sep 25 16:09:42 GMT 2025