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sys/powerpc/mpc85xx/pci_mpc85xx.c
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1 /*- 2 * Copyright 2006-2007 by Juniper Networks. 3 * Copyright 2008 Semihalf. 4 * Copyright 2010 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Semihalf 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * From: FreeBSD: src/sys/powerpc/mpc85xx/pci_ocp.c,v 1.9 2010/03/23 23:46:28 marcel 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD: releng/11.0/sys/powerpc/mpc85xx/pci_mpc85xx.c 297392 2016-03-29 15:19:56Z zbb $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/ktr.h> 42 #include <sys/sockio.h> 43 #include <sys/mbuf.h> 44 #include <sys/malloc.h> 45 #include <sys/kernel.h> 46 #include <sys/module.h> 47 #include <sys/socket.h> 48 #include <sys/queue.h> 49 #include <sys/bus.h> 50 #include <sys/lock.h> 51 #include <sys/mutex.h> 52 #include <sys/rman.h> 53 #include <sys/endian.h> 54 55 #include <vm/vm.h> 56 #include <vm/pmap.h> 57 58 #include <dev/ofw/ofw_pci.h> 59 #include <dev/ofw/ofw_bus.h> 60 #include <dev/ofw/ofw_bus_subr.h> 61 #include <dev/ofw/ofwpci.h> 62 #include <dev/pci/pcivar.h> 63 #include <dev/pci/pcireg.h> 64 #include <dev/pci/pcib_private.h> 65 66 #include "ofw_bus_if.h" 67 #include "pcib_if.h" 68 69 #include <machine/resource.h> 70 #include <machine/bus.h> 71 #include <machine/intr_machdep.h> 72 73 #include <powerpc/mpc85xx/mpc85xx.h> 74 75 #define REG_CFG_ADDR 0x0000 76 #define CONFIG_ACCESS_ENABLE 0x80000000 77 78 #define REG_CFG_DATA 0x0004 79 #define REG_INT_ACK 0x0008 80 81 #define REG_POTAR(n) (0x0c00 + 0x20 * (n)) 82 #define REG_POTEAR(n) (0x0c04 + 0x20 * (n)) 83 #define REG_POWBAR(n) (0x0c08 + 0x20 * (n)) 84 #define REG_POWAR(n) (0x0c10 + 0x20 * (n)) 85 86 #define REG_PITAR(n) (0x0e00 - 0x20 * (n)) 87 #define REG_PIWBAR(n) (0x0e08 - 0x20 * (n)) 88 #define REG_PIWBEAR(n) (0x0e0c - 0x20 * (n)) 89 #define REG_PIWAR(n) (0x0e10 - 0x20 * (n)) 90 91 #define REG_PEX_MES_DR 0x0020 92 #define REG_PEX_MES_IER 0x0028 93 #define REG_PEX_ERR_DR 0x0e00 94 #define REG_PEX_ERR_EN 0x0e08 95 96 #define REG_PEX_ERR_DR 0x0e00 97 #define REG_PEX_ERR_DR_ME 0x80000000 98 #define REG_PEX_ERR_DR_PCT 0x800000 99 #define REG_PEX_ERR_DR_PAT 0x400000 100 #define REG_PEX_ERR_DR_PCAC 0x200000 101 #define REG_PEX_ERR_DR_PNM 0x100000 102 #define REG_PEX_ERR_DR_CDNSC 0x80000 103 #define REG_PEX_ERR_DR_CRSNC 0x40000 104 #define REG_PEX_ERR_DR_ICCA 0x20000 105 #define REG_PEX_ERR_DR_IACA 0x10000 106 #define REG_PEX_ERR_DR_CRST 0x8000 107 #define REG_PEX_ERR_DR_MIS 0x4000 108 #define REG_PEX_ERR_DR_IOIS 0x2000 109 #define REG_PEX_ERR_DR_CIS 0x1000 110 #define REG_PEX_ERR_DR_CIEP 0x800 111 #define REG_PEX_ERR_DR_IOIEP 0x400 112 #define REG_PEX_ERR_DR_OAC 0x200 113 #define REG_PEX_ERR_DR_IOIA 0x100 114 #define REG_PEX_ERR_DR_IMBA 0x80 115 #define REG_PEX_ERR_DR_IIOBA 0x40 116 #define REG_PEX_ERR_DR_LDDE 0x20 117 #define REG_PEX_ERR_EN 0x0e08 118 119 #define PCIR_LTSSM 0x404 120 #define LTSSM_STAT_L0 0x16 121 122 #define DEVFN(b, s, f) ((b << 16) | (s << 8) | f) 123 124 struct fsl_pcib_softc { 125 struct ofw_pci_softc pci_sc; 126 device_t sc_dev; 127 128 int sc_iomem_target; 129 bus_addr_t sc_iomem_start, sc_iomem_end; 130 int sc_ioport_target; 131 bus_addr_t sc_ioport_start, sc_ioport_end; 132 133 struct resource *sc_res; 134 bus_space_handle_t sc_bsh; 135 bus_space_tag_t sc_bst; 136 int sc_rid; 137 138 struct resource *sc_irq_res; 139 void *sc_ih; 140 141 int sc_busnr; 142 int sc_pcie; 143 uint8_t sc_pcie_capreg; /* PCI-E Capability Reg Set */ 144 145 /* Devices that need special attention. */ 146 int sc_devfn_tundra; 147 int sc_devfn_via_ide; 148 }; 149 150 struct fsl_pcib_err_dr { 151 const char *msg; 152 uint32_t err_dr_mask; 153 }; 154 155 static const struct fsl_pcib_err_dr pci_err[] = { 156 {"ME", REG_PEX_ERR_DR_ME}, 157 {"PCT", REG_PEX_ERR_DR_PCT}, 158 {"PAT", REG_PEX_ERR_DR_PAT}, 159 {"PCAC", REG_PEX_ERR_DR_PCAC}, 160 {"PNM", REG_PEX_ERR_DR_PNM}, 161 {"CDNSC", REG_PEX_ERR_DR_CDNSC}, 162 {"CRSNC", REG_PEX_ERR_DR_CRSNC}, 163 {"ICCA", REG_PEX_ERR_DR_ICCA}, 164 {"IACA", REG_PEX_ERR_DR_IACA}, 165 {"CRST", REG_PEX_ERR_DR_CRST}, 166 {"MIS", REG_PEX_ERR_DR_MIS}, 167 {"IOIS", REG_PEX_ERR_DR_IOIS}, 168 {"CIS", REG_PEX_ERR_DR_CIS}, 169 {"CIEP", REG_PEX_ERR_DR_CIEP}, 170 {"IOIEP", REG_PEX_ERR_DR_IOIEP}, 171 {"OAC", REG_PEX_ERR_DR_OAC}, 172 {"IOIA", REG_PEX_ERR_DR_IOIA}, 173 {"IMBA", REG_PEX_ERR_DR_IMBA}, 174 {"IIOBA", REG_PEX_ERR_DR_IIOBA}, 175 {"LDDE", REG_PEX_ERR_DR_LDDE} 176 }; 177 178 /* Local forward declerations. */ 179 static uint32_t fsl_pcib_cfgread(struct fsl_pcib_softc *, u_int, u_int, u_int, 180 u_int, int); 181 static void fsl_pcib_cfgwrite(struct fsl_pcib_softc *, u_int, u_int, u_int, 182 u_int, uint32_t, int); 183 static int fsl_pcib_decode_win(phandle_t, struct fsl_pcib_softc *); 184 static void fsl_pcib_err_init(device_t); 185 static void fsl_pcib_inbound(struct fsl_pcib_softc *, int, int, uint64_t, 186 uint64_t, uint64_t); 187 static int fsl_pcib_init(struct fsl_pcib_softc *, int, int); 188 static void fsl_pcib_outbound(struct fsl_pcib_softc *, int, int, uint64_t, 189 uint64_t, uint64_t); 190 191 /* Forward declerations. */ 192 static int fsl_pcib_attach(device_t); 193 static int fsl_pcib_detach(device_t); 194 static int fsl_pcib_probe(device_t); 195 196 static int fsl_pcib_maxslots(device_t); 197 static uint32_t fsl_pcib_read_config(device_t, u_int, u_int, u_int, u_int, int); 198 static void fsl_pcib_write_config(device_t, u_int, u_int, u_int, u_int, 199 uint32_t, int); 200 201 /* Configuration r/w mutex. */ 202 struct mtx pcicfg_mtx; 203 static int mtx_initialized = 0; 204 205 /* 206 * Bus interface definitions. 207 */ 208 static device_method_t fsl_pcib_methods[] = { 209 /* Device interface */ 210 DEVMETHOD(device_probe, fsl_pcib_probe), 211 DEVMETHOD(device_attach, fsl_pcib_attach), 212 DEVMETHOD(device_detach, fsl_pcib_detach), 213 214 /* pcib interface */ 215 DEVMETHOD(pcib_maxslots, fsl_pcib_maxslots), 216 DEVMETHOD(pcib_read_config, fsl_pcib_read_config), 217 DEVMETHOD(pcib_write_config, fsl_pcib_write_config), 218 219 DEVMETHOD_END 220 }; 221 222 static devclass_t fsl_pcib_devclass; 223 224 DEFINE_CLASS_1(pcib, fsl_pcib_driver, fsl_pcib_methods, 225 sizeof(struct fsl_pcib_softc), ofw_pci_driver); 226 DRIVER_MODULE(pcib, ofwbus, fsl_pcib_driver, fsl_pcib_devclass, 0, 0); 227 228 static int 229 fsl_pcib_err_intr(void *v) 230 { 231 struct fsl_pcib_softc *sc; 232 device_t dev; 233 uint32_t err_reg, clear_reg; 234 uint8_t i; 235 236 dev = (device_t)v; 237 sc = device_get_softc(dev); 238 239 clear_reg = 0; 240 err_reg = bus_space_read_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_DR); 241 242 /* Check which one error occurred */ 243 for (i = 0; i < sizeof(pci_err)/sizeof(struct fsl_pcib_err_dr); i++) { 244 if (err_reg & pci_err[i].err_dr_mask) { 245 device_printf(dev, "PCI %d: report %s error\n", 246 device_get_unit(dev), pci_err[i].msg); 247 clear_reg |= pci_err[i].err_dr_mask; 248 } 249 } 250 251 /* Clear pending errors */ 252 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_DR, clear_reg); 253 254 return (0); 255 } 256 257 static int 258 fsl_pcib_probe(device_t dev) 259 { 260 261 if (ofw_bus_get_type(dev) == NULL || 262 strcmp(ofw_bus_get_type(dev), "pci") != 0) 263 return (ENXIO); 264 265 if (!(ofw_bus_is_compatible(dev, "fsl,mpc8540-pci") || 266 ofw_bus_is_compatible(dev, "fsl,mpc8540-pcie") || 267 ofw_bus_is_compatible(dev, "fsl,mpc8548-pcie") || 268 ofw_bus_is_compatible(dev, "fsl,p5020-pcie") || 269 ofw_bus_is_compatible(dev, "fsl,qoriq-pcie-v2.2") || 270 ofw_bus_is_compatible(dev, "fsl,qoriq-pcie"))) 271 return (ENXIO); 272 273 device_set_desc(dev, "Freescale Integrated PCI/PCI-E Controller"); 274 return (BUS_PROBE_DEFAULT); 275 } 276 277 static int 278 fsl_pcib_attach(device_t dev) 279 { 280 struct fsl_pcib_softc *sc; 281 phandle_t node; 282 uint32_t cfgreg; 283 int error, maxslot, rid; 284 uint8_t ltssm, capptr; 285 286 sc = device_get_softc(dev); 287 sc->sc_dev = dev; 288 289 sc->sc_rid = 0; 290 sc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rid, 291 RF_ACTIVE); 292 if (sc->sc_res == NULL) { 293 device_printf(dev, "could not map I/O memory\n"); 294 return (ENXIO); 295 } 296 sc->sc_bst = rman_get_bustag(sc->sc_res); 297 sc->sc_bsh = rman_get_bushandle(sc->sc_res); 298 sc->sc_busnr = 0; 299 300 if (!mtx_initialized) { 301 mtx_init(&pcicfg_mtx, "pcicfg", NULL, MTX_SPIN); 302 mtx_initialized = 1; 303 } 304 305 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_VENDOR, 2); 306 if (cfgreg != 0x1057 && cfgreg != 0x1957) 307 goto err; 308 309 capptr = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_CAP_PTR, 1); 310 while (capptr != 0) { 311 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, capptr, 2); 312 switch (cfgreg & 0xff) { 313 case PCIY_PCIX: 314 break; 315 case PCIY_EXPRESS: 316 sc->sc_pcie = 1; 317 sc->sc_pcie_capreg = capptr; 318 break; 319 } 320 capptr = (cfgreg >> 8) & 0xff; 321 } 322 323 node = ofw_bus_get_node(dev); 324 325 /* 326 * Initialize generic OF PCI interface (ranges, etc.) 327 */ 328 329 error = ofw_pci_init(dev); 330 if (error) 331 return (error); 332 333 /* 334 * Configure decode windows for PCI(E) access. 335 */ 336 if (fsl_pcib_decode_win(node, sc) != 0) 337 goto err; 338 339 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_COMMAND, 2); 340 cfgreg |= PCIM_CMD_SERRESPEN | PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN | 341 PCIM_CMD_PORTEN; 342 fsl_pcib_cfgwrite(sc, 0, 0, 0, PCIR_COMMAND, cfgreg, 2); 343 344 sc->sc_devfn_tundra = -1; 345 sc->sc_devfn_via_ide = -1; 346 347 348 /* 349 * Scan bus using firmware configured, 0 based bus numbering. 350 */ 351 maxslot = (sc->sc_pcie) ? 0 : PCI_SLOTMAX; 352 fsl_pcib_init(sc, sc->sc_busnr, maxslot); 353 354 if (sc->sc_pcie) { 355 ltssm = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_LTSSM, 1); 356 if (ltssm < LTSSM_STAT_L0) { 357 if (bootverbose) 358 printf("PCI %d: no PCIE link, skipping\n", 359 device_get_unit(dev)); 360 return (0); 361 } 362 } 363 364 /* Allocate irq */ 365 rid = 0; 366 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 367 RF_ACTIVE | RF_SHAREABLE); 368 if (sc->sc_irq_res == NULL) { 369 error = fsl_pcib_detach(dev); 370 if (error != 0) { 371 device_printf(dev, 372 "Detach of the driver failed with error %d\n", 373 error); 374 } 375 return (ENXIO); 376 } 377 378 /* Setup interrupt handler */ 379 error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 380 NULL, (driver_intr_t *)fsl_pcib_err_intr, dev, &sc->sc_ih); 381 if (error != 0) { 382 device_printf(dev, "Could not setup irq, %d\n", error); 383 sc->sc_ih = NULL; 384 error = fsl_pcib_detach(dev); 385 if (error != 0) { 386 device_printf(dev, 387 "Detach of the driver failed with error %d\n", 388 error); 389 } 390 return (ENXIO); 391 } 392 393 fsl_pcib_err_init(dev); 394 395 return (ofw_pci_attach(dev)); 396 397 err: 398 return (ENXIO); 399 } 400 401 static uint32_t 402 fsl_pcib_cfgread(struct fsl_pcib_softc *sc, u_int bus, u_int slot, u_int func, 403 u_int reg, int bytes) 404 { 405 uint32_t addr, data; 406 407 addr = CONFIG_ACCESS_ENABLE; 408 addr |= (bus & 0xff) << 16; 409 addr |= (slot & 0x1f) << 11; 410 addr |= (func & 0x7) << 8; 411 addr |= reg & 0xfc; 412 if (sc->sc_pcie) 413 addr |= (reg & 0xf00) << 16; 414 415 mtx_lock_spin(&pcicfg_mtx); 416 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_CFG_ADDR, addr); 417 418 switch (bytes) { 419 case 1: 420 data = bus_space_read_1(sc->sc_bst, sc->sc_bsh, 421 REG_CFG_DATA + (reg & 3)); 422 break; 423 case 2: 424 data = le16toh(bus_space_read_2(sc->sc_bst, sc->sc_bsh, 425 REG_CFG_DATA + (reg & 2))); 426 break; 427 case 4: 428 data = le32toh(bus_space_read_4(sc->sc_bst, sc->sc_bsh, 429 REG_CFG_DATA)); 430 break; 431 default: 432 data = ~0; 433 break; 434 } 435 mtx_unlock_spin(&pcicfg_mtx); 436 return (data); 437 } 438 439 static void 440 fsl_pcib_cfgwrite(struct fsl_pcib_softc *sc, u_int bus, u_int slot, u_int func, 441 u_int reg, uint32_t data, int bytes) 442 { 443 uint32_t addr; 444 445 addr = CONFIG_ACCESS_ENABLE; 446 addr |= (bus & 0xff) << 16; 447 addr |= (slot & 0x1f) << 11; 448 addr |= (func & 0x7) << 8; 449 addr |= reg & 0xfc; 450 if (sc->sc_pcie) 451 addr |= (reg & 0xf00) << 16; 452 453 mtx_lock_spin(&pcicfg_mtx); 454 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_CFG_ADDR, addr); 455 456 switch (bytes) { 457 case 1: 458 bus_space_write_1(sc->sc_bst, sc->sc_bsh, 459 REG_CFG_DATA + (reg & 3), data); 460 break; 461 case 2: 462 bus_space_write_2(sc->sc_bst, sc->sc_bsh, 463 REG_CFG_DATA + (reg & 2), htole16(data)); 464 break; 465 case 4: 466 bus_space_write_4(sc->sc_bst, sc->sc_bsh, 467 REG_CFG_DATA, htole32(data)); 468 break; 469 } 470 mtx_unlock_spin(&pcicfg_mtx); 471 } 472 473 #if 0 474 static void 475 dump(struct fsl_pcib_softc *sc) 476 { 477 unsigned int i; 478 479 #define RD(o) bus_space_read_4(sc->sc_bst, sc->sc_bsh, o) 480 for (i = 0; i < 5; i++) { 481 printf("POTAR%u =0x%08x\n", i, RD(REG_POTAR(i))); 482 printf("POTEAR%u =0x%08x\n", i, RD(REG_POTEAR(i))); 483 printf("POWBAR%u =0x%08x\n", i, RD(REG_POWBAR(i))); 484 printf("POWAR%u =0x%08x\n", i, RD(REG_POWAR(i))); 485 } 486 printf("\n"); 487 for (i = 1; i < 4; i++) { 488 printf("PITAR%u =0x%08x\n", i, RD(REG_PITAR(i))); 489 printf("PIWBAR%u =0x%08x\n", i, RD(REG_PIWBAR(i))); 490 printf("PIWBEAR%u=0x%08x\n", i, RD(REG_PIWBEAR(i))); 491 printf("PIWAR%u =0x%08x\n", i, RD(REG_PIWAR(i))); 492 } 493 printf("\n"); 494 #undef RD 495 496 for (i = 0; i < 0x48; i += 4) { 497 printf("cfg%02x=0x%08x\n", i, fsl_pcib_cfgread(sc, 0, 0, 0, 498 i, 4)); 499 } 500 } 501 #endif 502 503 static int 504 fsl_pcib_maxslots(device_t dev) 505 { 506 struct fsl_pcib_softc *sc = device_get_softc(dev); 507 508 return ((sc->sc_pcie) ? 0 : PCI_SLOTMAX); 509 } 510 511 static uint32_t 512 fsl_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, 513 u_int reg, int bytes) 514 { 515 struct fsl_pcib_softc *sc = device_get_softc(dev); 516 u_int devfn; 517 518 if (bus == sc->sc_busnr && !sc->sc_pcie && slot < 10) 519 return (~0); 520 devfn = DEVFN(bus, slot, func); 521 if (devfn == sc->sc_devfn_tundra) 522 return (~0); 523 if (devfn == sc->sc_devfn_via_ide && reg == PCIR_INTPIN) 524 return (1); 525 return (fsl_pcib_cfgread(sc, bus, slot, func, reg, bytes)); 526 } 527 528 static void 529 fsl_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, 530 u_int reg, uint32_t val, int bytes) 531 { 532 struct fsl_pcib_softc *sc = device_get_softc(dev); 533 534 if (bus == sc->sc_busnr && !sc->sc_pcie && slot < 10) 535 return; 536 fsl_pcib_cfgwrite(sc, bus, slot, func, reg, val, bytes); 537 } 538 539 static void 540 fsl_pcib_init_via(struct fsl_pcib_softc *sc, uint16_t device, int bus, 541 int slot, int fn) 542 { 543 544 if (device == 0x0686) { 545 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x52, 0x34, 1); 546 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x77, 0x00, 1); 547 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x83, 0x98, 1); 548 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x85, 0x03, 1); 549 } else if (device == 0x0571) { 550 sc->sc_devfn_via_ide = DEVFN(bus, slot, fn); 551 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x40, 0x0b, 1); 552 } 553 } 554 555 static int 556 fsl_pcib_init(struct fsl_pcib_softc *sc, int bus, int maxslot) 557 { 558 int secbus; 559 int old_pribus, old_secbus, old_subbus; 560 int new_pribus, new_secbus, new_subbus; 561 int slot, func, maxfunc; 562 uint16_t vendor, device; 563 uint8_t command, hdrtype, subclass; 564 565 secbus = bus; 566 for (slot = 0; slot <= maxslot; slot++) { 567 maxfunc = 0; 568 for (func = 0; func <= maxfunc; func++) { 569 hdrtype = fsl_pcib_read_config(sc->sc_dev, bus, slot, 570 func, PCIR_HDRTYPE, 1); 571 572 if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE) 573 continue; 574 575 if (func == 0 && (hdrtype & PCIM_MFDEV)) 576 maxfunc = PCI_FUNCMAX; 577 578 vendor = fsl_pcib_read_config(sc->sc_dev, bus, slot, 579 func, PCIR_VENDOR, 2); 580 device = fsl_pcib_read_config(sc->sc_dev, bus, slot, 581 func, PCIR_DEVICE, 2); 582 583 if (vendor == 0x1957 && device == 0x3fff) { 584 sc->sc_devfn_tundra = DEVFN(bus, slot, func); 585 continue; 586 } 587 588 command = fsl_pcib_read_config(sc->sc_dev, bus, slot, 589 func, PCIR_COMMAND, 1); 590 command &= ~(PCIM_CMD_MEMEN | PCIM_CMD_PORTEN); 591 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, 592 PCIR_COMMAND, command, 1); 593 594 if (vendor == 0x1106) 595 fsl_pcib_init_via(sc, device, bus, slot, func); 596 597 /* 598 * Handle PCI-PCI bridges 599 */ 600 subclass = fsl_pcib_read_config(sc->sc_dev, bus, slot, 601 func, PCIR_SUBCLASS, 1); 602 603 /* Allow all DEVTYPE 1 devices */ 604 if (hdrtype != PCIM_HDRTYPE_BRIDGE) 605 continue; 606 607 secbus++; 608 609 /* Read currect bus register configuration */ 610 old_pribus = fsl_pcib_read_config(sc->sc_dev, bus, 611 slot, func, PCIR_PRIBUS_1, 1); 612 old_secbus = fsl_pcib_read_config(sc->sc_dev, bus, 613 slot, func, PCIR_SECBUS_1, 1); 614 old_subbus = fsl_pcib_read_config(sc->sc_dev, bus, 615 slot, func, PCIR_SUBBUS_1, 1); 616 617 if (bootverbose) 618 printf("PCI: reading firmware bus numbers for " 619 "secbus = %d (bus/sec/sub) = (%d/%d/%d)\n", 620 secbus, old_pribus, old_secbus, old_subbus); 621 622 new_pribus = bus; 623 new_secbus = secbus; 624 625 secbus = fsl_pcib_init(sc, secbus, 626 (subclass == PCIS_BRIDGE_PCI) ? PCI_SLOTMAX : 0); 627 628 new_subbus = secbus; 629 630 if (bootverbose) 631 printf("PCI: translate firmware bus numbers " 632 "for secbus %d (%d/%d/%d) -> (%d/%d/%d)\n", 633 secbus, old_pribus, old_secbus, old_subbus, 634 new_pribus, new_secbus, new_subbus); 635 636 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, 637 PCIR_PRIBUS_1, new_pribus, 1); 638 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, 639 PCIR_SECBUS_1, new_secbus, 1); 640 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, 641 PCIR_SUBBUS_1, new_subbus, 1); 642 } 643 } 644 645 return (secbus); 646 } 647 648 static void 649 fsl_pcib_inbound(struct fsl_pcib_softc *sc, int wnd, int tgt, uint64_t start, 650 uint64_t size, uint64_t pci_start) 651 { 652 uint32_t attr, bar, tar; 653 654 KASSERT(wnd > 0, ("%s: inbound window 0 is invalid", __func__)); 655 656 switch (tgt) { 657 /* XXX OCP85XX_TGTIF_RAM2, OCP85XX_TGTIF_RAM_INTL should be handled */ 658 case OCP85XX_TGTIF_RAM1: 659 attr = 0xa0f55000 | (ffsl(size) - 2); 660 break; 661 default: 662 attr = 0; 663 break; 664 } 665 tar = start >> 12; 666 bar = pci_start >> 12; 667 668 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PITAR(wnd), tar); 669 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWBEAR(wnd), 0); 670 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWBAR(wnd), bar); 671 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWAR(wnd), attr); 672 } 673 674 static void 675 fsl_pcib_outbound(struct fsl_pcib_softc *sc, int wnd, int res, uint64_t start, 676 uint64_t size, uint64_t pci_start) 677 { 678 uint32_t attr, bar, tar; 679 680 switch (res) { 681 case SYS_RES_MEMORY: 682 attr = 0x80044000 | (ffsll(size) - 2); 683 break; 684 case SYS_RES_IOPORT: 685 attr = 0x80088000 | (ffsll(size) - 2); 686 break; 687 default: 688 attr = 0x0004401f; 689 break; 690 } 691 bar = start >> 12; 692 tar = pci_start >> 12; 693 694 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POTAR(wnd), tar); 695 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POTEAR(wnd), 0); 696 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POWBAR(wnd), bar); 697 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POWAR(wnd), attr); 698 } 699 700 701 static void 702 fsl_pcib_err_init(device_t dev) 703 { 704 struct fsl_pcib_softc *sc; 705 uint16_t sec_stat, dsr; 706 uint32_t dcr, err_en; 707 708 sc = device_get_softc(dev); 709 710 sec_stat = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_SECSTAT_1, 2); 711 if (sec_stat) 712 fsl_pcib_cfgwrite(sc, 0, 0, 0, PCIR_SECSTAT_1, 0xffff, 2); 713 if (sc->sc_pcie) { 714 /* Clear error bits */ 715 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_MES_IER, 716 0xffffffff); 717 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_MES_DR, 718 0xffffffff); 719 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_DR, 720 0xffffffff); 721 722 dsr = fsl_pcib_cfgread(sc, 0, 0, 0, 723 sc->sc_pcie_capreg + PCIER_DEVICE_STA, 2); 724 if (dsr) 725 fsl_pcib_cfgwrite(sc, 0, 0, 0, 726 sc->sc_pcie_capreg + PCIER_DEVICE_STA, 727 0xffff, 2); 728 729 /* Enable all errors reporting */ 730 err_en = 0x00bfff00; 731 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_EN, 732 err_en); 733 734 /* Enable error reporting: URR, FER, NFER */ 735 dcr = fsl_pcib_cfgread(sc, 0, 0, 0, 736 sc->sc_pcie_capreg + PCIER_DEVICE_CTL, 4); 737 dcr |= PCIEM_CTL_URR_ENABLE | PCIEM_CTL_FER_ENABLE | 738 PCIEM_CTL_NFER_ENABLE; 739 fsl_pcib_cfgwrite(sc, 0, 0, 0, 740 sc->sc_pcie_capreg + PCIER_DEVICE_CTL, dcr, 4); 741 } 742 } 743 744 static int 745 fsl_pcib_detach(device_t dev) 746 { 747 748 if (mtx_initialized) { 749 mtx_destroy(&pcicfg_mtx); 750 mtx_initialized = 0; 751 } 752 return (bus_generic_detach(dev)); 753 } 754 755 static int 756 fsl_pcib_decode_win(phandle_t node, struct fsl_pcib_softc *sc) 757 { 758 device_t dev; 759 int error, i, trgt; 760 761 dev = sc->sc_dev; 762 763 fsl_pcib_outbound(sc, 0, -1, 0, 0, 0); 764 765 /* 766 * Configure LAW decode windows. 767 */ 768 error = law_pci_target(sc->sc_res, &sc->sc_iomem_target, 769 &sc->sc_ioport_target); 770 if (error != 0) { 771 device_printf(dev, "could not retrieve PCI LAW target info\n"); 772 return (error); 773 } 774 775 for (i = 0; i < sc->pci_sc.sc_nrange; i++) { 776 switch (sc->pci_sc.sc_range[i].pci_hi & 777 OFW_PCI_PHYS_HI_SPACEMASK) { 778 case OFW_PCI_PHYS_HI_SPACE_CONFIG: 779 continue; 780 case OFW_PCI_PHYS_HI_SPACE_IO: 781 trgt = sc->sc_ioport_target; 782 fsl_pcib_outbound(sc, 2, SYS_RES_IOPORT, 783 sc->pci_sc.sc_range[i].host, 784 sc->pci_sc.sc_range[i].size, 785 sc->pci_sc.sc_range[i].pci); 786 sc->sc_ioport_start = sc->pci_sc.sc_range[i].pci; 787 sc->sc_ioport_end = sc->pci_sc.sc_range[i].pci + 788 sc->pci_sc.sc_range[i].size - 1; 789 break; 790 case OFW_PCI_PHYS_HI_SPACE_MEM32: 791 case OFW_PCI_PHYS_HI_SPACE_MEM64: 792 trgt = sc->sc_iomem_target; 793 fsl_pcib_outbound(sc, 1, SYS_RES_MEMORY, 794 sc->pci_sc.sc_range[i].host, 795 sc->pci_sc.sc_range[i].size, 796 sc->pci_sc.sc_range[i].pci); 797 sc->sc_iomem_start = sc->pci_sc.sc_range[i].pci; 798 sc->sc_iomem_end = sc->pci_sc.sc_range[i].pci + 799 sc->pci_sc.sc_range[i].size - 1; 800 break; 801 default: 802 panic("Unknown range type %#x\n", 803 sc->pci_sc.sc_range[i].pci_hi & 804 OFW_PCI_PHYS_HI_SPACEMASK); 805 } 806 error = law_enable(trgt, sc->pci_sc.sc_range[i].host, 807 sc->pci_sc.sc_range[i].size); 808 if (error != 0) { 809 device_printf(dev, "could not program LAW for range " 810 "%d\n", i); 811 return (error); 812 } 813 } 814 815 /* 816 * Set outbout and inbound windows. 817 */ 818 fsl_pcib_outbound(sc, 3, -1, 0, 0, 0); 819 fsl_pcib_outbound(sc, 4, -1, 0, 0, 0); 820 821 fsl_pcib_inbound(sc, 1, -1, 0, 0, 0); 822 fsl_pcib_inbound(sc, 2, -1, 0, 0, 0); 823 fsl_pcib_inbound(sc, 3, OCP85XX_TGTIF_RAM1, 0, 824 2U * 1024U * 1024U * 1024U, 0); 825 826 return (0); 827 }
Cache object: e4fe6aa59cd76753650d0d71350992f3
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