if_gem_pci.c revision 1.29
1 /* $NetBSD: if_gem_pci.c,v 1.29 2008/04/10 19:13:37 cegger 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 1.29 2008/04/10 19:13:37 cegger 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_dev(&sc->sc_dev, "unknown adaptor\n"); 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_dev(&sc->sc_dev, "unable to map device registers\n"); 245 return; 246 } 247 if (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 248 GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE, &sc->sc_h2)) { 249 aprint_error_dev(&sc->sc_dev, "unable to create bank 2 subregion\n"); 250 return; 251 } 252 253 #if GEM_USE_LOCAL_MAC_ADDRESS 254 /* 255 * Dig out VPD (vital product data) and acquire Ethernet address. 256 * The VPD of gem resides in the PCI PROM (PCI FCode). 257 */ 258 /* 259 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 260 * chapter 2 describes the data structure. 261 */ 262 263 enp = NULL; 264 265 if (sc->sc_variant == GEM_SUN_GEM && 266 (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 267 GEM_PCI_ROM_OFFSET, GEM_PCI_ROM_SIZE, &romh)) == 0) { 268 269 /* read PCI Expansion PROM Header */ 270 bus_space_read_region_1(sc->sc_bustag, 271 romh, 0, buf, sizeof buf); 272 273 /* Check for "shared-pins = serdes" in FCode. */ 274 i = 0; 275 serdes = 0; 276 while (i < (sizeof buf) - sizeof "serdes") { 277 if (!serdes) { 278 if (isserdes(&buf[i])) 279 serdes = 1; 280 } else { 281 if (isshared_pins(&buf[i])) 282 serdes = 2; 283 } 284 if (serdes == 2) { 285 sc->sc_flags |= GEM_SERDES; 286 break; 287 } 288 i++; 289 } 290 #ifdef GEM_DEBUG 291 /* PROM dump */ 292 printf("%s: PROM dump (0x0000 to %04lx)\n", device_xname(&sc->sc_dev), 293 (sizeof buf) - 1); 294 i = 0; 295 j = 0; 296 printf(" %04x ", i); 297 while (i < sizeof buf) { 298 printf("%02x ", buf[i]); 299 if (i && !(i % 8)) 300 printf(" "); 301 if (i && !(i % 16)) { 302 printf(" "); 303 while (j < i) { 304 if (buf[j] > 31 && buf[j] < 128) 305 printf("%c", buf[j]); 306 else 307 printf("."); 308 j++; 309 } 310 j = i; 311 printf("\n %04x ", i); 312 } 313 i++; 314 } 315 printf("\n"); 316 #endif 317 318 if (memcmp(buf, promhdr, sizeof promhdr) == 0 && 319 (dataoff = (buf[PROMHDR_PTR_DATA] | 320 (buf[PROMHDR_PTR_DATA + 1] << 8))) >= 0x1c) { 321 322 /* read PCI Expansion PROM Data */ 323 bus_space_read_region_1(sc->sc_bustag, romh, dataoff, 324 buf, 64); 325 if (memcmp(buf, promdat, sizeof promdat) == 0 && 326 gempromvalid(buf + PROMDATA_DATA2) && 327 (vpdoff = (buf[PROMDATA_PTR_VPD] | 328 (buf[PROMDATA_PTR_VPD + 1] << 8))) >= 0x1c) { 329 330 /* 331 * The VPD of gem is not in PCI 2.2 standard 332 * format. The length in the resource header 333 * is in big endian, and resources are not 334 * properly terminated (only one resource 335 * and no end tag). 336 */ 337 /* read PCI VPD */ 338 bus_space_read_region_1(sc->sc_bustag, romh, 339 vpdoff, buf, 64); 340 vpd = (void *)(buf + 3); 341 if (PCI_VPDRES_ISLARGE(buf[0]) && 342 PCI_VPDRES_LARGE_NAME(buf[0]) 343 == PCI_VPDRES_TYPE_VPD && 344 vpd->vpd_key0 == 0x4e /* N */ && 345 vpd->vpd_key1 == 0x41 /* A */ && 346 vpd->vpd_len == ETHER_ADDR_LEN) { 347 /* 348 * Ethernet address found 349 */ 350 enp = buf + 6; 351 } 352 } 353 } 354 } 355 356 if (enp) 357 memcpy(enaddr, enp, ETHER_ADDR_LEN); 358 else 359 #endif /* GEM_USE_LOCAL_MAC_ADDRESS */ 360 #ifdef __sparc__ 361 { 362 if (strcmp(prom_getpropstring(PCITAG_NODE(pa->pa_tag), 363 "shared-pins"), "serdes") == 0) 364 sc->sc_flags |= GEM_SERDES; 365 prom_getether(PCITAG_NODE(pa->pa_tag), enaddr); 366 } 367 #else 368 #ifdef macppc 369 { 370 int node; 371 char sp[6]; /* "serdes" */ 372 373 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 374 if (node == 0) { 375 aprint_error_dev(&sc->sc_dev, "unable to locate OpenFirmware node\n"); 376 return; 377 } 378 379 OF_getprop(node, "shared-pins", sp, sizeof(sp)); 380 if (isserdes(sp)) 381 sc->sc_flags |= GEM_SERDES; 382 OF_getprop(node, "local-mac-address", enaddr, sizeof(enaddr)); 383 } 384 #else 385 printf("%s: no Ethernet address found\n", device_xname(&sc->sc_dev)); 386 #endif /* macppc */ 387 #endif /* __sparc__ */ 388 389 if (pci_intr_map(pa, &ih) != 0) { 390 aprint_error_dev(&sc->sc_dev, "unable to map interrupt\n"); 391 return; 392 } 393 intrstr = pci_intr_string(pa->pa_pc, ih); 394 gsc->gsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, gem_intr, sc); 395 if (gsc->gsc_ih == NULL) { 396 aprint_error_dev(&sc->sc_dev, "unable to establish interrupt"); 397 if (intrstr != NULL) 398 aprint_normal(" at %s", intrstr); 399 aprint_normal("\n"); 400 return; 401 } 402 aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr); 403 404 /* Finish off the attach. */ 405 gem_attach(sc, enaddr); 406 } 407
Indexes created Fri Sep 26 20:09:58 GMT 2025