if_gem_pci.c revision 1.22.16.1
1 /* $NetBSD: if_gem_pci.c,v 1.22.16.1 2008/06/03 20:47:24 skrll 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 1.22.16.1 2008/06/03 20:47:24 skrll 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 <machine/bus.h> 61 #include <machine/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 return (1); 126 127 128 return (0); 129 } 130 131 #if GEM_USE_LOCAL_MAC_ADDRESS 132 static inline int 133 gempromvalid(u_int8_t* buf) 134 { 135 return buf[0] == 0x18 && buf[1] == 0x00 && /* structure length */ 136 buf[2] == 0x00 && /* revision */ 137 (buf[3] == 0x00 || /* hme */ 138 buf[3] == 0x80) && /* qfe */ 139 buf[4] == PCI_SUBCLASS_NETWORK_ETHERNET && /* subclass code */ 140 buf[5] == PCI_CLASS_NETWORK; /* class code */ 141 } 142 143 static inline int 144 isshared_pins(u_int8_t* buf) 145 { 146 return buf[0] == 's' && buf[1] == 'h' && buf[2] == 'a' && 147 buf[3] == 'r' && buf[4] == 'e' && buf[5] == 'd' && 148 buf[6] == '-' && buf[7] == 'p' && buf[8] == 'i' && 149 buf[9] == 'n' && buf[10] == 's'; 150 } 151 #endif 152 153 static inline int 154 isserdes(u_int8_t* buf) 155 { 156 return buf[0] == 's' && buf[1] == 'e' && buf[2] == 'r' && 157 buf[3] == 'd' && buf[4] == 'e' && buf[5] == 's'; 158 } 159 160 void 161 gem_attach_pci(parent, self, aux) 162 struct device *parent, *self; 163 void *aux; 164 { 165 struct pci_attach_args *pa = aux; 166 struct gem_pci_softc *gsc = (void *)self; 167 struct gem_softc *sc = &gsc->gsc_gem; 168 pci_intr_handle_t ih; 169 const char *intrstr; 170 char devinfo[256]; 171 uint8_t enaddr[ETHER_ADDR_LEN]; 172 #if GEM_USE_LOCAL_MAC_ADDRESS 173 u_int8_t *enp; 174 bus_space_handle_t romh; 175 u_int8_t buf[0x0800]; 176 int dataoff, vpdoff, serdes; 177 #ifdef GEM_DEBUG 178 int i, j; 179 #endif 180 struct pci_vpd *vpd; 181 static const u_int8_t promhdr[] = { 0x55, 0xaa }; 182 #define PROMHDR_PTR_DATA 0x18 183 static const u_int8_t promdat[] = { 184 0x50, 0x43, 0x49, 0x52, /* "PCIR" */ 185 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 186 PCI_PRODUCT_SUN_GEMNETWORK & 0xff, 187 PCI_PRODUCT_SUN_GEMNETWORK >> 8 188 }; 189 #define PROMDATA_PTR_VPD 0x08 190 #define PROMDATA_DATA2 0x0a 191 #endif /* GEM_USE_LOCAL_MAC_ADDRESS */ 192 193 aprint_naive(": Ethernet controller\n"); 194 195 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 196 sc->sc_chiprev = PCI_REVISION(pa->pa_class); 197 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, sc->sc_chiprev); 198 199 /* 200 * Some Sun GEMs/ERIs do have their intpin register bogusly set to 0, 201 * although it should be 1. correct that. 202 */ 203 if (pa->pa_intrpin == 0) 204 pa->pa_intrpin = 1; 205 206 sc->sc_variant = GEM_UNKNOWN; 207 208 sc->sc_dmatag = pa->pa_dmat; 209 210 sc->sc_flags |= GEM_PCI; 211 212 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN) { 213 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_GEMNETWORK) 214 sc->sc_variant = GEM_SUN_GEM; 215 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_ERINETWORK) 216 sc->sc_variant = GEM_SUN_ERI; 217 } else if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE) { 218 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC || 219 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC2 || 220 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC3 || 221 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_GMAC) 222 sc->sc_variant = GEM_APPLE_GMAC; 223 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_K2_GMAC) 224 sc->sc_variant = GEM_APPLE_K2_GMAC; 225 } 226 227 if (sc->sc_variant == GEM_UNKNOWN) { 228 aprint_error("%s: unknown adaptor\n", sc->sc_dev.dv_xname); 229 return; 230 } 231 232 #define PCI_GEM_BASEADDR (PCI_MAPREG_START + 0x00) 233 234 /* XXX Need to check for a 64-bit mem BAR? */ 235 if (pci_mapreg_map(pa, PCI_GEM_BASEADDR, 236 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, 237 &sc->sc_bustag, &sc->sc_h1, NULL, NULL) != 0) 238 { 239 aprint_error("%s: unable to map device registers\n", 240 sc->sc_dev.dv_xname); 241 return; 242 } 243 if (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 244 GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE, &sc->sc_h2)) { 245 aprint_error("%s: unable to create bank 2 subregion\n", 246 sc->sc_dev.dv_xname); 247 return; 248 } 249 250 #if GEM_USE_LOCAL_MAC_ADDRESS 251 /* 252 * Dig out VPD (vital product data) and acquire Ethernet address. 253 * The VPD of gem resides in the PCI PROM (PCI FCode). 254 */ 255 /* 256 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 257 * chapter 2 describes the data structure. 258 */ 259 260 enp = NULL; 261 262 if (sc->sc_variant == GEM_SUN_GEM && 263 (bus_space_subregion(sc->sc_bustag, sc->sc_h1, 264 GEM_PCI_ROM_OFFSET, GEM_PCI_ROM_SIZE, &romh)) == 0) { 265 266 /* read PCI Expansion PROM Header */ 267 bus_space_read_region_1(sc->sc_bustag, 268 romh, 0, buf, sizeof buf); 269 270 /* Check for "shared-pins = serdes" in FCode. */ 271 i = 0; 272 serdes = 0; 273 while (i < (sizeof buf) - sizeof "serdes") { 274 if (!serdes) { 275 if (isserdes(&buf[i])) 276 serdes = 1; 277 } else { 278 if (isshared_pins(&buf[i])) 279 serdes = 2; 280 } 281 if (serdes == 2) { 282 sc->sc_flags |= GEM_SERDES; 283 break; 284 } 285 i++; 286 } 287 #ifdef GEM_DEBUG 288 /* PROM dump */ 289 printf("%s: PROM dump (0x0000 to %04lx)\n", sc->sc_dev.dv_xname, 290 (sizeof buf) - 1); 291 i = 0; 292 j = 0; 293 printf(" %04x ", i); 294 while (i < sizeof buf) { 295 printf("%02x ", buf[i]); 296 if (i && !(i % 8)) 297 printf(" "); 298 if (i && !(i % 16)) { 299 printf(" "); 300 while (j < i) { 301 if (buf[j] > 31 && buf[j] < 128) 302 printf("%c", buf[j]); 303 else 304 printf("."); 305 j++; 306 } 307 j = i; 308 printf("\n %04x ", i); 309 } 310 i++; 311 } 312 printf("\n"); 313 #endif 314 315 if (memcmp(buf, promhdr, sizeof promhdr) == 0 && 316 (dataoff = (buf[PROMHDR_PTR_DATA] | 317 (buf[PROMHDR_PTR_DATA + 1] << 8))) >= 0x1c) { 318 319 /* read PCI Expansion PROM Data */ 320 bus_space_read_region_1(sc->sc_bustag, romh, dataoff, 321 buf, 64); 322 if (memcmp(buf, promdat, sizeof promdat) == 0 && 323 gempromvalid(buf + PROMDATA_DATA2) && 324 (vpdoff = (buf[PROMDATA_PTR_VPD] | 325 (buf[PROMDATA_PTR_VPD + 1] << 8))) >= 0x1c) { 326 327 /* 328 * The VPD of gem is not in PCI 2.2 standard 329 * format. The length in the resource header 330 * is in big endian, and resources are not 331 * properly terminated (only one resource 332 * and no end tag). 333 */ 334 /* read PCI VPD */ 335 bus_space_read_region_1(sc->sc_bustag, romh, 336 vpdoff, buf, 64); 337 vpd = (void *)(buf + 3); 338 if (PCI_VPDRES_ISLARGE(buf[0]) && 339 PCI_VPDRES_LARGE_NAME(buf[0]) 340 == PCI_VPDRES_TYPE_VPD && 341 vpd->vpd_key0 == 0x4e /* N */ && 342 vpd->vpd_key1 == 0x41 /* A */ && 343 vpd->vpd_len == ETHER_ADDR_LEN) { 344 /* 345 * Ethernet address found 346 */ 347 enp = buf + 6; 348 } 349 } 350 } 351 } 352 353 if (enp) 354 memcpy(enaddr, enp, ETHER_ADDR_LEN); 355 else 356 #endif /* GEM_USE_LOCAL_MAC_ADDRESS */ 357 #ifdef __sparc__ 358 { 359 if (strcmp(prom_getpropstring(PCITAG_NODE(pa->pa_tag), 360 "shared-pins"), "serdes") == 0) 361 sc->sc_flags |= GEM_SERDES; 362 prom_getether(PCITAG_NODE(pa->pa_tag), enaddr); 363 } 364 #else 365 #ifdef macppc 366 { 367 int node; 368 char sp[6]; /* "serdes" */ 369 370 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 371 if (node == 0) { 372 aprint_error("%s: unable to locate OpenFirmware node\n", 373 sc->sc_dev.dv_xname); 374 return; 375 } 376 377 OF_getprop(node, "shared-pins", sp, sizeof(sp)); 378 if (isserdes(sp)) 379 sc->sc_flags |= GEM_SERDES; 380 OF_getprop(node, "local-mac-address", enaddr, sizeof(enaddr)); 381 } 382 #else 383 printf("%s: no Ethernet address found\n", sc->sc_dev.dv_xname); 384 #endif /* macppc */ 385 #endif /* __sparc__ */ 386 387 if (pci_intr_map(pa, &ih) != 0) { 388 aprint_error("%s: unable to map interrupt\n", 389 sc->sc_dev.dv_xname); 390 return; 391 } 392 intrstr = pci_intr_string(pa->pa_pc, ih); 393 gsc->gsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, gem_intr, sc); 394 if (gsc->gsc_ih == NULL) { 395 aprint_error("%s: unable to establish interrupt", 396 sc->sc_dev.dv_xname); 397 if (intrstr != NULL) 398 aprint_normal(" at %s", intrstr); 399 aprint_normal("\n"); 400 return; 401 } 402 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 403 404 /* Finish off the attach. */ 405 gem_attach(sc, enaddr); 406 } 407
Indexes created Wed Oct 01 13:09:50 GMT 2025