1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * MPC83xx/85xx/86xx PCI/PCIE support routing. 4 * 5 * Copyright 2007-2012 Freescale Semiconductor, Inc. 6 * Copyright 2008-2009 MontaVista Software, Inc. 7 * 8 * Initial author: Xianghua Xiao <x.xiao@freescale.com> 9 * Recode: ZHANG WEI <wei.zhang@freescale.com> 10 * Rewrite the routing for Frescale PCI and PCI Express 11 * Roy Zang <tie-fei.zang@freescale.com> 12 * MPC83xx PCI-Express support: 13 * Tony Li <tony.li@freescale.com> 14 * Anton Vorontsov <avorontsov@ru.mvista.com> 15 */ 16 #include <linux/kernel.h> 17 #include <linux/pci.h> 18 #include <linux/delay.h> 19 #include <linux/string.h> 20 #include <linux/fsl/edac.h> 21 #include <linux/init.h> 22 #include <linux/interrupt.h> 23 #include <linux/memblock.h> 24 #include <linux/log2.h> 25 #include <linux/of_address.h> 26 #include <linux/of_irq.h> 27 #include <linux/platform_device.h> 28 #include <linux/slab.h> 29 #include <linux/suspend.h> 30 #include <linux/syscore_ops.h> 31 #include <linux/uaccess.h> 32 33 #include <asm/io.h> 34 #include <asm/pci-bridge.h> 35 #include <asm/ppc-pci.h> 36 #include <asm/machdep.h> 37 #include <asm/mpc85xx.h> 38 #include <asm/disassemble.h> 39 #include <asm/ppc-opcode.h> 40 #include <asm/swiotlb.h> 41 #include <asm/setup.h> 42 #include <sysdev/fsl_soc.h> 43 #include <sysdev/fsl_pci.h> 44 45 static int fsl_pcie_bus_fixup, is_mpc83xx_pci; 46 47 static void quirk_fsl_pcie_early(struct pci_dev *dev) 48 { 49 u8 hdr_type; 50 51 /* if we aren't a PCIe don't bother */ 52 if (!pci_is_pcie(dev)) 53 return; 54 55 /* if we aren't in host mode don't bother */ 56 pci_read_config_byte(dev, PCI_HEADER_TYPE, &hdr_type); 57 if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) 58 return; 59 60 dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; 61 fsl_pcie_bus_fixup = 1; 62 return; 63 } 64 65 static int fsl_indirect_read_config(struct pci_bus *, unsigned int, 66 int, int, u32 *); 67 68 static int fsl_pcie_check_link(struct pci_controller *hose) 69 { 70 u32 val = 0; 71 72 if (hose->indirect_type & PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK) { 73 if (hose->ops->read == fsl_indirect_read_config) 74 __indirect_read_config(hose, hose->first_busno, 0, 75 PCIE_LTSSM, 4, &val); 76 else 77 early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val); 78 if (val < PCIE_LTSSM_L0) 79 return 1; 80 } else { 81 struct ccsr_pci __iomem *pci = hose->private_data; 82 /* for PCIe IP rev 3.0 or greater use CSR0 for link state */ 83 val = (in_be32(&pci->pex_csr0) & PEX_CSR0_LTSSM_MASK) 84 >> PEX_CSR0_LTSSM_SHIFT; 85 if (val != PEX_CSR0_LTSSM_L0) 86 return 1; 87 } 88 89 return 0; 90 } 91 92 static int fsl_indirect_read_config(struct pci_bus *bus, unsigned int devfn, 93 int offset, int len, u32 *val) 94 { 95 struct pci_controller *hose = pci_bus_to_host(bus); 96 97 if (fsl_pcie_check_link(hose)) 98 hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; 99 else 100 hose->indirect_type &= ~PPC_INDIRECT_TYPE_NO_PCIE_LINK; 101 102 return indirect_read_config(bus, devfn, offset, len, val); 103 } 104 105 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) 106 107 static struct pci_ops fsl_indirect_pcie_ops = 108 { 109 .read = fsl_indirect_read_config, 110 .write = indirect_write_config, 111 }; 112 113 static u64 pci64_dma_offset; 114 115 #ifdef CONFIG_SWIOTLB 116 static void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev) 117 { 118 struct pci_controller *hose = pci_bus_to_host(pdev->bus); 119 120 pdev->dev.bus_dma_limit = 121 hose->dma_window_base_cur + hose->dma_window_size - 1; 122 } 123 124 static void setup_swiotlb_ops(struct pci_controller *hose) 125 { 126 if (ppc_swiotlb_enable) 127 hose->controller_ops.dma_dev_setup = pci_dma_dev_setup_swiotlb; 128 } 129 #else 130 static inline void setup_swiotlb_ops(struct pci_controller *hose) {} 131 #endif 132 133 static void fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) 134 { 135 /* 136 * Fix up PCI devices that are able to DMA to the large inbound 137 * mapping that allows addressing any RAM address from across PCI. 138 */ 139 if (dev_is_pci(dev) && dma_mask >= pci64_dma_offset * 2 - 1) { 140 dev->bus_dma_limit = 0; 141 dev->archdata.dma_offset = pci64_dma_offset; 142 } 143 } 144 145 static int setup_one_atmu(struct ccsr_pci __iomem *pci, 146 unsigned int index, const struct resource *res, 147 resource_size_t offset) 148 { 149 resource_size_t pci_addr = res->start - offset; 150 resource_size_t phys_addr = res->start; 151 resource_size_t size = resource_size(res); 152 u32 flags = 0x80044000; /* enable & mem R/W */ 153 unsigned int i; 154 155 pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n", 156 (u64)res->start, (u64)size); 157 158 if (res->flags & IORESOURCE_PREFETCH) 159 flags |= 0x10000000; /* enable relaxed ordering */ 160 161 for (i = 0; size > 0; i++) { 162 unsigned int bits = min_t(u32, ilog2(size), 163 __ffs(pci_addr | phys_addr)); 164 165 if (index + i >= 5) 166 return -1; 167 168 out_be32(&pci->pow[index + i].potar, pci_addr >> 12); 169 out_be32(&pci->pow[index + i].potear, (u64)pci_addr >> 44); 170 out_be32(&pci->pow[index + i].powbar, phys_addr >> 12); 171 out_be32(&pci->pow[index + i].powar, flags | (bits - 1)); 172 173 pci_addr += (resource_size_t)1U << bits; 174 phys_addr += (resource_size_t)1U << bits; 175 size -= (resource_size_t)1U << bits; 176 } 177 178 return i; 179 } 180 181 static bool is_kdump(void) 182 { 183 struct device_node *node; 184 bool ret; 185 186 node = of_find_node_by_type(NULL, "memory"); 187 if (!node) { 188 WARN_ON_ONCE(1); 189 return false; 190 } 191 192 ret = of_property_read_bool(node, "linux,usable-memory"); 193 of_node_put(node); 194 195 return ret; 196 } 197 198 /* atmu setup for fsl pci/pcie controller */ 199 static void setup_pci_atmu(struct pci_controller *hose) 200 { 201 struct ccsr_pci __iomem *pci = hose->private_data; 202 int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4; 203 u64 mem, sz, paddr_hi = 0; 204 u64 offset = 0, paddr_lo = ULLONG_MAX; 205 u32 pcicsrbar = 0, pcicsrbar_sz; 206 u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL | 207 PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; 208 const u64 *reg; 209 int len; 210 bool setup_inbound; 211 212 /* 213 * If this is kdump, we don't want to trigger a bunch of PCI 214 * errors by closing the window on in-flight DMA. 215 * 216 * We still run most of the function's logic so that things like 217 * hose->dma_window_size still get set. 218 */ 219 setup_inbound = !is_kdump(); 220 221 if (of_device_is_compatible(hose->dn, "fsl,bsc9132-pcie")) { 222 /* 223 * BSC9132 Rev1.0 has an issue where all the PEX inbound 224 * windows have implemented the default target value as 0xf 225 * for CCSR space.In all Freescale legacy devices the target 226 * of 0xf is reserved for local memory space. 9132 Rev1.0 227 * now has local memory space mapped to target 0x0 instead of 228 * 0xf. Hence adding a workaround to remove the target 0xf 229 * defined for memory space from Inbound window attributes. 230 */ 231 piwar &= ~PIWAR_TGI_LOCAL; 232 } 233 234 if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { 235 if (in_be32(&pci->block_rev1) >= PCIE_IP_REV_2_2) { 236 win_idx = 2; 237 start_idx = 0; 238 end_idx = 3; 239 } 240 } 241 242 /* Disable all windows (except powar0 since it's ignored) */ 243 for(i = 1; i < 5; i++) 244 out_be32(&pci->pow[i].powar, 0); 245 246 if (setup_inbound) { 247 for (i = start_idx; i < end_idx; i++) 248 out_be32(&pci->piw[i].piwar, 0); 249 } 250 251 /* Setup outbound MEM window */ 252 for(i = 0, j = 1; i < 3; i++) { 253 if (!(hose->mem_resources[i].flags & IORESOURCE_MEM)) 254 continue; 255 256 paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start); 257 paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end); 258 259 /* We assume all memory resources have the same offset */ 260 offset = hose->mem_offset[i]; 261 n = setup_one_atmu(pci, j, &hose->mem_resources[i], offset); 262 263 if (n < 0 || j >= 5) { 264 pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i); 265 hose->mem_resources[i].flags |= IORESOURCE_DISABLED; 266 } else 267 j += n; 268 } 269 270 /* Setup outbound IO window */ 271 if (hose->io_resource.flags & IORESOURCE_IO) { 272 if (j >= 5) { 273 pr_err("Ran out of outbound PCI ATMUs for IO resource\n"); 274 } else { 275 pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, " 276 "phy base 0x%016llx.\n", 277 (u64)hose->io_resource.start, 278 (u64)resource_size(&hose->io_resource), 279 (u64)hose->io_base_phys); 280 out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12)); 281 out_be32(&pci->pow[j].potear, 0); 282 out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12)); 283 /* Enable, IO R/W */ 284 out_be32(&pci->pow[j].powar, 0x80088000 285 | (ilog2(hose->io_resource.end 286 - hose->io_resource.start + 1) - 1)); 287 } 288 } 289 290 /* convert to pci address space */ 291 paddr_hi -= offset; 292 paddr_lo -= offset; 293 294 if (paddr_hi == paddr_lo) { 295 pr_err("%pOF: No outbound window space\n", hose->dn); 296 return; 297 } 298 299 if (paddr_lo == 0) { 300 pr_err("%pOF: No space for inbound window\n", hose->dn); 301 return; 302 } 303 304 /* setup PCSRBAR/PEXCSRBAR */ 305 early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, 0xffffffff); 306 early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, &pcicsrbar_sz); 307 pcicsrbar_sz = ~pcicsrbar_sz + 1; 308 309 if (paddr_hi < (0x100000000ull - pcicsrbar_sz) || 310 (paddr_lo > 0x100000000ull)) 311 pcicsrbar = 0x100000000ull - pcicsrbar_sz; 312 else 313 pcicsrbar = (paddr_lo - pcicsrbar_sz) & -pcicsrbar_sz; 314 early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, pcicsrbar); 315 316 paddr_lo = min(paddr_lo, (u64)pcicsrbar); 317 318 pr_info("%pOF: PCICSRBAR @ 0x%x\n", hose->dn, pcicsrbar); 319 320 /* Setup inbound mem window */ 321 mem = memblock_end_of_DRAM(); 322 pr_info("%s: end of DRAM %llx\n", __func__, mem); 323 324 /* 325 * The msi-address-64 property, if it exists, indicates the physical 326 * address of the MSIIR register. Normally, this register is located 327 * inside CCSR, so the ATMU that covers all of CCSR is used. But if 328 * this property exists, then we normally need to create a new ATMU 329 * for it. For now, however, we cheat. The only entity that creates 330 * this property is the Freescale hypervisor, and the address is 331 * specified in the partition configuration. Typically, the address 332 * is located in the page immediately after the end of DDR. If so, we 333 * can avoid allocating a new ATMU by extending the DDR ATMU by one 334 * page. 335 */ 336 reg = of_get_property(hose->dn, "msi-address-64", &len); 337 if (reg && (len == sizeof(u64))) { 338 u64 address = be64_to_cpup(reg); 339 340 if ((address >= mem) && (address < (mem + PAGE_SIZE))) { 341 pr_info("%pOF: extending DDR ATMU to cover MSIIR", hose->dn); 342 mem += PAGE_SIZE; 343 } else { 344 /* TODO: Create a new ATMU for MSIIR */ 345 pr_warn("%pOF: msi-address-64 address of %llx is " 346 "unsupported\n", hose->dn, address); 347 } 348 } 349 350 sz = min(mem, paddr_lo); 351 mem_log = ilog2(sz); 352 353 /* PCIe can overmap inbound & outbound since RX & TX are separated */ 354 if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { 355 /* Size window to exact size if power-of-two or one size up */ 356 if ((1ull << mem_log) != mem) { 357 mem_log++; 358 if ((1ull << mem_log) > mem) 359 pr_info("%pOF: Setting PCI inbound window " 360 "greater than memory size\n", hose->dn); 361 } 362 363 piwar |= ((mem_log - 1) & PIWAR_SZ_MASK); 364 365 if (setup_inbound) { 366 /* Setup inbound memory window */ 367 out_be32(&pci->piw[win_idx].pitar, 0x00000000); 368 out_be32(&pci->piw[win_idx].piwbar, 0x00000000); 369 out_be32(&pci->piw[win_idx].piwar, piwar); 370 } 371 372 win_idx--; 373 hose->dma_window_base_cur = 0x00000000; 374 hose->dma_window_size = (resource_size_t)sz; 375 376 /* 377 * if we have >4G of memory setup second PCI inbound window to 378 * let devices that are 64-bit address capable to work w/o 379 * SWIOTLB and access the full range of memory 380 */ 381 if (sz != mem) { 382 mem_log = ilog2(mem); 383 384 /* Size window up if we dont fit in exact power-of-2 */ 385 if ((1ull << mem_log) != mem) 386 mem_log++; 387 388 piwar = (piwar & ~PIWAR_SZ_MASK) | (mem_log - 1); 389 pci64_dma_offset = 1ULL << mem_log; 390 391 if (setup_inbound) { 392 /* Setup inbound memory window */ 393 out_be32(&pci->piw[win_idx].pitar, 0x00000000); 394 out_be32(&pci->piw[win_idx].piwbear, 395 pci64_dma_offset >> 44); 396 out_be32(&pci->piw[win_idx].piwbar, 397 pci64_dma_offset >> 12); 398 out_be32(&pci->piw[win_idx].piwar, piwar); 399 } 400 401 /* 402 * install our own dma_set_mask handler to fixup dma_ops 403 * and dma_offset 404 */ 405 ppc_md.dma_set_mask = fsl_pci_dma_set_mask; 406 407 pr_info("%pOF: Setup 64-bit PCI DMA window\n", hose->dn); 408 } 409 } else { 410 u64 paddr = 0; 411 412 if (setup_inbound) { 413 /* Setup inbound memory window */ 414 out_be32(&pci->piw[win_idx].pitar, paddr >> 12); 415 out_be32(&pci->piw[win_idx].piwbar, paddr >> 12); 416 out_be32(&pci->piw[win_idx].piwar, 417 (piwar | (mem_log - 1))); 418 } 419 420 win_idx--; 421 paddr += 1ull << mem_log; 422 sz -= 1ull << mem_log; 423 424 if (sz) { 425 mem_log = ilog2(sz); 426 piwar |= (mem_log - 1); 427 428 if (setup_inbound) { 429 out_be32(&pci->piw[win_idx].pitar, 430 paddr >> 12); 431 out_be32(&pci->piw[win_idx].piwbar, 432 paddr >> 12); 433 out_be32(&pci->piw[win_idx].piwar, piwar); 434 } 435 436 win_idx--; 437 paddr += 1ull << mem_log; 438 } 439 440 hose->dma_window_base_cur = 0x00000000; 441 hose->dma_window_size = (resource_size_t)paddr; 442 } 443 444 if (hose->dma_window_size < mem) { 445 #ifdef CONFIG_SWIOTLB 446 ppc_swiotlb_enable = 1; 447 #else 448 pr_err("%pOF: ERROR: Memory size exceeds PCI ATMU ability to " 449 "map - enable CONFIG_SWIOTLB to avoid dma errors.\n", 450 hose->dn); 451 #endif 452 /* adjusting outbound windows could reclaim space in mem map */ 453 if (paddr_hi < 0xffffffffull) 454 pr_warn("%pOF: WARNING: Outbound window cfg leaves " 455 "gaps in memory map. Adjusting the memory map " 456 "could reduce unnecessary bounce buffering.\n", 457 hose->dn); 458 459 pr_info("%pOF: DMA window size is 0x%llx\n", hose->dn, 460 (u64)hose->dma_window_size); 461 } 462 } 463 464 static void setup_pci_cmd(struct pci_controller *hose) 465 { 466 u16 cmd; 467 int cap_x; 468 469 early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd); 470 cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY 471 | PCI_COMMAND_IO; 472 early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd); 473 474 cap_x = early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX); 475 if (cap_x) { 476 int pci_x_cmd = cap_x + PCI_X_CMD; 477 cmd = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ 478 | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E; 479 early_write_config_word(hose, 0, 0, pci_x_cmd, cmd); 480 } else { 481 early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80); 482 } 483 } 484 485 void fsl_pcibios_fixup_bus(struct pci_bus *bus) 486 { 487 struct pci_controller *hose = pci_bus_to_host(bus); 488 int i, is_pcie = 0, no_link; 489 490 /* The root complex bridge comes up with bogus resources, 491 * we copy the PHB ones in. 492 * 493 * With the current generic PCI code, the PHB bus no longer 494 * has bus->resource[0..4] set, so things are a bit more 495 * tricky. 496 */ 497 498 if (fsl_pcie_bus_fixup) 499 is_pcie = early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP); 500 no_link = !!(hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK); 501 502 if (bus->parent == hose->bus && (is_pcie || no_link)) { 503 for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; ++i) { 504 struct resource *res = bus->resource[i]; 505 struct resource *par; 506 507 if (!res) 508 continue; 509 if (i == 0) 510 par = &hose->io_resource; 511 else if (i < 4) 512 par = &hose->mem_resources[i-1]; 513 else par = NULL; 514 515 res->start = par ? par->start : 0; 516 res->end = par ? par->end : 0; 517 res->flags = par ? par->flags : 0; 518 } 519 } 520 } 521 522 static int fsl_add_bridge(struct platform_device *pdev, int is_primary) 523 { 524 int len; 525 struct pci_controller *hose; 526 struct resource rsrc; 527 const int *bus_range; 528 u8 hdr_type, progif; 529 u32 class_code; 530 struct device_node *dev; 531 struct ccsr_pci __iomem *pci; 532 u16 temp; 533 u32 svr = mfspr(SPRN_SVR); 534 535 dev = pdev->dev.of_node; 536 537 if (!of_device_is_available(dev)) { 538 pr_warn("%pOF: disabled\n", dev); 539 return -ENODEV; 540 } 541 542 pr_debug("Adding PCI host bridge %pOF\n", dev); 543 544 /* Fetch host bridge registers address */ 545 if (of_address_to_resource(dev, 0, &rsrc)) { 546 printk(KERN_WARNING "Can't get pci register base!"); 547 return -ENOMEM; 548 } 549 550 /* Get bus range if any */ 551 bus_range = of_get_property(dev, "bus-range", &len); 552 if (bus_range == NULL || len < 2 * sizeof(int)) 553 printk(KERN_WARNING "Can't get bus-range for %pOF, assume" 554 " bus 0\n", dev); 555 556 pci_add_flags(PCI_REASSIGN_ALL_BUS); 557 hose = pcibios_alloc_controller(dev); 558 if (!hose) 559 return -ENOMEM; 560 561 /* set platform device as the parent */ 562 hose->parent = &pdev->dev; 563 hose->first_busno = bus_range ? bus_range[0] : 0x0; 564 hose->last_busno = bus_range ? bus_range[1] : 0xff; 565 566 pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n", 567 (u64)rsrc.start, (u64)resource_size(&rsrc)); 568 569 pci = hose->private_data = ioremap(rsrc.start, resource_size(&rsrc)); 570 if (!hose->private_data) 571 goto no_bridge; 572 573 setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, 574 PPC_INDIRECT_TYPE_BIG_ENDIAN); 575 576 if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) 577 hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; 578 579 if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { 580 /* use fsl_indirect_read_config for PCIe */ 581 hose->ops = &fsl_indirect_pcie_ops; 582 /* For PCIE read HEADER_TYPE to identify controller mode */ 583 early_read_config_byte(hose, 0, 0, PCI_HEADER_TYPE, &hdr_type); 584 if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) 585 goto no_bridge; 586 587 } else { 588 /* For PCI read PROG to identify controller mode */ 589 early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif); 590 if ((progif & 1) && 591 !of_property_read_bool(dev, "fsl,pci-agent-force-enum")) 592 goto no_bridge; 593 } 594 595 setup_pci_cmd(hose); 596 597 /* check PCI express link status */ 598 if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { 599 hose->indirect_type |= PPC_INDIRECT_TYPE_EXT_REG | 600 PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS; 601 if (fsl_pcie_check_link(hose)) 602 hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; 603 /* Fix Class Code to PCI_CLASS_BRIDGE_PCI_NORMAL for pre-3.0 controller */ 604 if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) { 605 early_read_config_dword(hose, 0, 0, PCIE_FSL_CSR_CLASSCODE, &class_code); 606 class_code &= 0xff; 607 class_code |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8; 608 early_write_config_dword(hose, 0, 0, PCIE_FSL_CSR_CLASSCODE, class_code); 609 } 610 } else { 611 /* 612 * Set PBFR(PCI Bus Function Register)[10] = 1 to 613 * disable the combining of crossing cacheline 614 * boundary requests into one burst transaction. 615 * PCI-X operation is not affected. 616 * Fix erratum PCI 5 on MPC8548 617 */ 618 #define PCI_BUS_FUNCTION 0x44 619 #define PCI_BUS_FUNCTION_MDS 0x400 /* Master disable streaming */ 620 if (((SVR_SOC_VER(svr) == SVR_8543) || 621 (SVR_SOC_VER(svr) == SVR_8545) || 622 (SVR_SOC_VER(svr) == SVR_8547) || 623 (SVR_SOC_VER(svr) == SVR_8548)) && 624 !early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX)) { 625 early_read_config_word(hose, 0, 0, 626 PCI_BUS_FUNCTION, &temp); 627 temp |= PCI_BUS_FUNCTION_MDS; 628 early_write_config_word(hose, 0, 0, 629 PCI_BUS_FUNCTION, temp); 630 } 631 } 632 633 printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " 634 "Firmware bus number: %d->%d\n", 635 (unsigned long long)rsrc.start, hose->first_busno, 636 hose->last_busno); 637 638 pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", 639 hose, hose->cfg_addr, hose->cfg_data); 640 641 /* Interpret the "ranges" property */ 642 /* This also maps the I/O region and sets isa_io/mem_base */ 643 pci_process_bridge_OF_ranges(hose, dev, is_primary); 644 645 /* Setup PEX window registers */ 646 setup_pci_atmu(hose); 647 648 /* Set up controller operations */ 649 setup_swiotlb_ops(hose); 650 651 return 0; 652 653 no_bridge: 654 iounmap(hose->private_data); 655 /* unmap cfg_data & cfg_addr separately if not on same page */ 656 if (((unsigned long)hose->cfg_data & PAGE_MASK) != 657 ((unsigned long)hose->cfg_addr & PAGE_MASK)) 658 iounmap(hose->cfg_data); 659 iounmap(hose->cfg_addr); 660 pcibios_free_controller(hose); 661 return -ENODEV; 662 } 663 #endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */ 664 665 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, 666 quirk_fsl_pcie_early); 667 668 #if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x) 669 struct mpc83xx_pcie_priv { 670 void __iomem *cfg_type0; 671 void __iomem *cfg_type1; 672 u32 dev_base; 673 }; 674 675 struct pex_inbound_window { 676 u32 ar; 677 u32 tar; 678 u32 barl; 679 u32 barh; 680 }; 681 682 /* 683 * With the convention of u-boot, the PCIE outbound window 0 serves 684 * as configuration transactions outbound. 685 */ 686 #define PEX_OUTWIN0_BAR 0xCA4 687 #define PEX_OUTWIN0_TAL 0xCA8 688 #define PEX_OUTWIN0_TAH 0xCAC 689 #define PEX_RC_INWIN_BASE 0xE60 690 #define PEX_RCIWARn_EN 0x1 691 692 static int mpc83xx_pcie_exclude_device(struct pci_bus *bus, unsigned int devfn) 693 { 694 struct pci_controller *hose = pci_bus_to_host(bus); 695 696 if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK) 697 return PCIBIOS_DEVICE_NOT_FOUND; 698 /* 699 * Workaround for the HW bug: for Type 0 configure transactions the 700 * PCI-E controller does not check the device number bits and just 701 * assumes that the device number bits are 0. 702 */ 703 if (bus->number == hose->first_busno || 704 bus->primary == hose->first_busno) { 705 if (devfn & 0xf8) 706 return PCIBIOS_DEVICE_NOT_FOUND; 707 } 708 709 if (ppc_md.pci_exclude_device) { 710 if (ppc_md.pci_exclude_device(hose, bus->number, devfn)) 711 return PCIBIOS_DEVICE_NOT_FOUND; 712 } 713 714 return PCIBIOS_SUCCESSFUL; 715 } 716 717 static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus, 718 unsigned int devfn, int offset) 719 { 720 struct pci_controller *hose = pci_bus_to_host(bus); 721 struct mpc83xx_pcie_priv *pcie = hose->dn->data; 722 u32 dev_base = bus->number << 24 | devfn << 16; 723 int ret; 724 725 ret = mpc83xx_pcie_exclude_device(bus, devfn); 726 if (ret) 727 return NULL; 728 729 offset &= 0xfff; 730 731 /* Type 0 */ 732 if (bus->number == hose->first_busno) 733 return pcie->cfg_type0 + offset; 734 735 if (pcie->dev_base == dev_base) 736 goto mapped; 737 738 out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, dev_base); 739 740 pcie->dev_base = dev_base; 741 mapped: 742 return pcie->cfg_type1 + offset; 743 } 744 745 static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn, 746 int offset, int len, u32 val) 747 { 748 struct pci_controller *hose = pci_bus_to_host(bus); 749 750 /* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */ 751 if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno) 752 val &= 0xffffff00; 753 754 return pci_generic_config_write(bus, devfn, offset, len, val); 755 } 756 757 static struct pci_ops mpc83xx_pcie_ops = { 758 .map_bus = mpc83xx_pcie_remap_cfg, 759 .read = pci_generic_config_read, 760 .write = mpc83xx_pcie_write_config, 761 }; 762 763 static int __init mpc83xx_pcie_setup(struct pci_controller *hose, 764 struct resource *reg) 765 { 766 struct mpc83xx_pcie_priv *pcie; 767 u32 cfg_bar; 768 int ret = -ENOMEM; 769 770 pcie = kzalloc(sizeof(*pcie), GFP_KERNEL); 771 if (!pcie) 772 return ret; 773 774 pcie->cfg_type0 = ioremap(reg->start, resource_size(reg)); 775 if (!pcie->cfg_type0) 776 goto err0; 777 778 cfg_bar = in_le32(pcie->cfg_type0 + PEX_OUTWIN0_BAR); 779 if (!cfg_bar) { 780 /* PCI-E isn't configured. */ 781 ret = -ENODEV; 782 goto err1; 783 } 784 785 pcie->cfg_type1 = ioremap(cfg_bar, 0x1000); 786 if (!pcie->cfg_type1) 787 goto err1; 788 789 WARN_ON(hose->dn->data); 790 hose->dn->data = pcie; 791 hose->ops = &mpc83xx_pcie_ops; 792 hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; 793 794 out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0); 795 out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0); 796 797 if (fsl_pcie_check_link(hose)) 798 hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; 799 800 return 0; 801 err1: 802 iounmap(pcie->cfg_type0); 803 err0: 804 kfree(pcie); 805 return ret; 806 807 } 808 809 int __init mpc83xx_add_bridge(struct device_node *dev) 810 { 811 int ret; 812 int len; 813 struct pci_controller *hose; 814 struct resource rsrc_reg; 815 struct resource rsrc_cfg; 816 const int *bus_range; 817 int primary; 818 819 is_mpc83xx_pci = 1; 820 821 if (!of_device_is_available(dev)) { 822 pr_warn("%pOF: disabled by the firmware.\n", 823 dev); 824 return -ENODEV; 825 } 826 pr_debug("Adding PCI host bridge %pOF\n", dev); 827 828 /* Fetch host bridge registers address */ 829 if (of_address_to_resource(dev, 0, &rsrc_reg)) { 830 printk(KERN_WARNING "Can't get pci register base!\n"); 831 return -ENOMEM; 832 } 833 834 memset(&rsrc_cfg, 0, sizeof(rsrc_cfg)); 835 836 if (of_address_to_resource(dev, 1, &rsrc_cfg)) { 837 printk(KERN_WARNING 838 "No pci config register base in dev tree, " 839 "using default\n"); 840 /* 841 * MPC83xx supports up to two host controllers 842 * one at 0x8500 has config space registers at 0x8300 843 * one at 0x8600 has config space registers at 0x8380 844 */ 845 if ((rsrc_reg.start & 0xfffff) == 0x8500) 846 rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300; 847 else if ((rsrc_reg.start & 0xfffff) == 0x8600) 848 rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380; 849 } 850 /* 851 * Controller at offset 0x8500 is primary 852 */ 853 if ((rsrc_reg.start & 0xfffff) == 0x8500) 854 primary = 1; 855 else 856 primary = 0; 857 858 /* Get bus range if any */ 859 bus_range = of_get_property(dev, "bus-range", &len); 860 if (bus_range == NULL || len < 2 * sizeof(int)) { 861 printk(KERN_WARNING "Can't get bus-range for %pOF, assume" 862 " bus 0\n", dev); 863 } 864 865 pci_add_flags(PCI_REASSIGN_ALL_BUS); 866 hose = pcibios_alloc_controller(dev); 867 if (!hose) 868 return -ENOMEM; 869 870 hose->first_busno = bus_range ? bus_range[0] : 0; 871 hose->last_busno = bus_range ? bus_range[1] : 0xff; 872 873 if (of_device_is_compatible(dev, "fsl,mpc8314-pcie")) { 874 ret = mpc83xx_pcie_setup(hose, &rsrc_reg); 875 if (ret) 876 goto err0; 877 } else { 878 setup_indirect_pci(hose, rsrc_cfg.start, 879 rsrc_cfg.start + 4, 0); 880 } 881 882 printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " 883 "Firmware bus number: %d->%d\n", 884 (unsigned long long)rsrc_reg.start, hose->first_busno, 885 hose->last_busno); 886 887 pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", 888 hose, hose->cfg_addr, hose->cfg_data); 889 890 /* Interpret the "ranges" property */ 891 /* This also maps the I/O region and sets isa_io/mem_base */ 892 pci_process_bridge_OF_ranges(hose, dev, primary); 893 894 return 0; 895 err0: 896 pcibios_free_controller(hose); 897 return ret; 898 } 899 #endif /* CONFIG_PPC_83xx */ 900 901 u64 fsl_pci_immrbar_base(struct pci_controller *hose) 902 { 903 #ifdef CONFIG_PPC_83xx 904 if (is_mpc83xx_pci) { 905 struct mpc83xx_pcie_priv *pcie = hose->dn->data; 906 struct pex_inbound_window *in; 907 int i; 908 909 /* Walk the Root Complex Inbound windows to match IMMR base */ 910 in = pcie->cfg_type0 + PEX_RC_INWIN_BASE; 911 for (i = 0; i < 4; i++) { 912 /* not enabled, skip */ 913 if (!(in_le32(&in[i].ar) & PEX_RCIWARn_EN)) 914 continue; 915 916 if (get_immrbase() == in_le32(&in[i].tar)) 917 return (u64)in_le32(&in[i].barh) << 32 | 918 in_le32(&in[i].barl); 919 } 920 921 printk(KERN_WARNING "could not find PCI BAR matching IMMR\n"); 922 } 923 #endif 924 925 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) 926 if (!is_mpc83xx_pci) { 927 u32 base; 928 929 pci_bus_read_config_dword(hose->bus, 930 PCI_DEVFN(0, 0), PCI_BASE_ADDRESS_0, &base); 931 932 /* 933 * For PEXCSRBAR, bit 3-0 indicate prefetchable and 934 * address type. So when getting base address, these 935 * bits should be masked 936 */ 937 base &= PCI_BASE_ADDRESS_MEM_MASK; 938 939 return base; 940 } 941 #endif 942 943 return 0; 944 } 945 946 #ifdef CONFIG_PPC_E500 947 static int mcheck_handle_load(struct pt_regs *regs, u32 inst) 948 { 949 unsigned int rd, ra, rb, d; 950 951 rd = get_rt(inst); 952 ra = get_ra(inst); 953 rb = get_rb(inst); 954 d = get_d(inst); 955 956 switch (get_op(inst)) { 957 case 31: 958 switch (get_xop(inst)) { 959 case OP_31_XOP_LWZX: 960 case OP_31_XOP_LWBRX: 961 regs->gpr[rd] = 0xffffffff; 962 break; 963 964 case OP_31_XOP_LWZUX: 965 regs->gpr[rd] = 0xffffffff; 966 regs->gpr[ra] += regs->gpr[rb]; 967 break; 968 969 case OP_31_XOP_LBZX: 970 regs->gpr[rd] = 0xff; 971 break; 972 973 case OP_31_XOP_LBZUX: 974 regs->gpr[rd] = 0xff; 975 regs->gpr[ra] += regs->gpr[rb]; 976 break; 977 978 case OP_31_XOP_LHZX: 979 case OP_31_XOP_LHBRX: 980 regs->gpr[rd] = 0xffff; 981 break; 982 983 case OP_31_XOP_LHZUX: 984 regs->gpr[rd] = 0xffff; 985 regs->gpr[ra] += regs->gpr[rb]; 986 break; 987 988 case OP_31_XOP_LHAX: 989 regs->gpr[rd] = ~0UL; 990 break; 991 992 case OP_31_XOP_LHAUX: 993 regs->gpr[rd] = ~0UL; 994 regs->gpr[ra] += regs->gpr[rb]; 995 break; 996 997 default: 998 return 0; 999 } 1000 break; 1001 1002 case OP_LWZ: 1003 regs->gpr[rd] = 0xffffffff; 1004 break; 1005 1006 case OP_LWZU: 1007 regs->gpr[rd] = 0xffffffff; 1008 regs->gpr[ra] += (s16)d; 1009 break; 1010 1011 case OP_LBZ: 1012 regs->gpr[rd] = 0xff; 1013 break; 1014 1015 case OP_LBZU: 1016 regs->gpr[rd] = 0xff; 1017 regs->gpr[ra] += (s16)d; 1018 break; 1019 1020 case OP_LHZ: 1021 regs->gpr[rd] = 0xffff; 1022 break; 1023 1024 case OP_LHZU: 1025 regs->gpr[rd] = 0xffff; 1026 regs->gpr[ra] += (s16)d; 1027 break; 1028 1029 case OP_LHA: 1030 regs->gpr[rd] = ~0UL; 1031 break; 1032 1033 case OP_LHAU: 1034 regs->gpr[rd] = ~0UL; 1035 regs->gpr[ra] += (s16)d; 1036 break; 1037 1038 default: 1039 return 0; 1040 } 1041 1042 return 1; 1043 } 1044 1045 static int is_in_pci_mem_space(phys_addr_t addr) 1046 { 1047 struct pci_controller *hose; 1048 struct resource *res; 1049 int i; 1050 1051 list_for_each_entry(hose, &hose_list, list_node) { 1052 if (!(hose->indirect_type & PPC_INDIRECT_TYPE_EXT_REG)) 1053 continue; 1054 1055 for (i = 0; i < 3; i++) { 1056 res = &hose->mem_resources[i]; 1057 if ((res->flags & IORESOURCE_MEM) && 1058 addr >= res->start && addr <= res->end) 1059 return 1; 1060 } 1061 } 1062 return 0; 1063 } 1064 1065 int fsl_pci_mcheck_exception(struct pt_regs *regs) 1066 { 1067 u32 inst; 1068 int ret; 1069 phys_addr_t addr = 0; 1070 1071 /* Let KVM/QEMU deal with the exception */ 1072 if (regs->msr & MSR_GS) 1073 return 0; 1074 1075 #ifdef CONFIG_PHYS_64BIT 1076 addr = mfspr(SPRN_MCARU); 1077 addr <<= 32; 1078 #endif 1079 addr += mfspr(SPRN_MCAR); 1080 1081 if (is_in_pci_mem_space(addr)) { 1082 if (user_mode(regs)) 1083 ret = copy_from_user_nofault(&inst, 1084 (void __user *)regs->nip, sizeof(inst)); 1085 else 1086 ret = get_kernel_nofault(inst, (void *)regs->nip); 1087 1088 if (!ret && mcheck_handle_load(regs, inst)) { 1089 regs_add_return_ip(regs, 4); 1090 return 1; 1091 } 1092 } 1093 1094 return 0; 1095 } 1096 #endif 1097 1098 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) 1099 static const struct of_device_id pci_ids[] = { 1100 { .compatible = "fsl,mpc8540-pci", }, 1101 { .compatible = "fsl,mpc8548-pcie", }, 1102 { .compatible = "fsl,mpc8610-pci", }, 1103 { .compatible = "fsl,mpc8641-pcie", }, 1104 { .compatible = "fsl,qoriq-pcie", }, 1105 { .compatible = "fsl,qoriq-pcie-v2.1", }, 1106 { .compatible = "fsl,qoriq-pcie-v2.2", }, 1107 { .compatible = "fsl,qoriq-pcie-v2.3", }, 1108 { .compatible = "fsl,qoriq-pcie-v2.4", }, 1109 { .compatible = "fsl,qoriq-pcie-v3.0", }, 1110 1111 /* 1112 * The following entries are for compatibility with older device 1113 * trees. 1114 */ 1115 { .compatible = "fsl,p1022-pcie", }, 1116 { .compatible = "fsl,p4080-pcie", }, 1117 1118 {}, 1119 }; 1120 1121 struct device_node *fsl_pci_primary; 1122 1123 void __init fsl_pci_assign_primary(void) 1124 { 1125 struct device_node *np; 1126 1127 /* Callers can specify the primary bus using other means. */ 1128 if (fsl_pci_primary) 1129 return; 1130 1131 /* If a PCI host bridge contains an ISA node, it's primary. */ 1132 np = of_find_node_by_type(NULL, "isa"); 1133 while ((fsl_pci_primary = of_get_parent(np))) { 1134 of_node_put(np); 1135 np = fsl_pci_primary; 1136 1137 if (of_match_node(pci_ids, np) && of_device_is_available(np)) 1138 return; 1139 } 1140 1141 /* 1142 * If there's no PCI host bridge with ISA then check for 1143 * PCI host bridge with alias "pci0" (first PCI host bridge). 1144 */ 1145 np = of_find_node_by_path("pci0"); 1146 if (np && of_match_node(pci_ids, np) && of_device_is_available(np)) { 1147 fsl_pci_primary = np; 1148 of_node_put(np); 1149 return; 1150 } 1151 if (np) 1152 of_node_put(np); 1153 1154 /* 1155 * If there's no PCI host bridge with ISA, arbitrarily 1156 * designate one as primary. This can go away once 1157 * various bugs with primary-less systems are fixed. 1158 */ 1159 for_each_matching_node(np, pci_ids) { 1160 if (of_device_is_available(np)) { 1161 fsl_pci_primary = np; 1162 return; 1163 } 1164 } 1165 } 1166 1167 #ifdef CONFIG_PM_SLEEP 1168 static irqreturn_t fsl_pci_pme_handle(int irq, void *dev_id) 1169 { 1170 struct pci_controller *hose = dev_id; 1171 struct ccsr_pci __iomem *pci = hose->private_data; 1172 u32 dr; 1173 1174 dr = in_be32(&pci->pex_pme_mes_dr); 1175 if (!dr) 1176 return IRQ_NONE; 1177 1178 out_be32(&pci->pex_pme_mes_dr, dr); 1179 1180 return IRQ_HANDLED; 1181 } 1182 1183 static int fsl_pci_pme_probe(struct pci_controller *hose) 1184 { 1185 struct ccsr_pci __iomem *pci; 1186 struct pci_dev *dev; 1187 int pme_irq; 1188 int res; 1189 u16 pms; 1190 1191 /* Get hose's pci_dev */ 1192 dev = list_first_entry(&hose->bus->devices, typeof(*dev), bus_list); 1193 1194 /* PME Disable */ 1195 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms); 1196 pms &= ~PCI_PM_CTRL_PME_ENABLE; 1197 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms); 1198 1199 pme_irq = irq_of_parse_and_map(hose->dn, 0); 1200 if (!pme_irq) { 1201 dev_err(&dev->dev, "Failed to map PME interrupt.\n"); 1202 1203 return -ENXIO; 1204 } 1205 1206 res = devm_request_irq(hose->parent, pme_irq, 1207 fsl_pci_pme_handle, 1208 IRQF_SHARED, 1209 "[PCI] PME", hose); 1210 if (res < 0) { 1211 dev_err(&dev->dev, "Unable to request irq %d for PME\n", pme_irq); 1212 irq_dispose_mapping(pme_irq); 1213 1214 return -ENODEV; 1215 } 1216 1217 pci = hose->private_data; 1218 1219 /* Enable PTOD, ENL23D & EXL23D */ 1220 clrbits32(&pci->pex_pme_mes_disr, 1221 PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D); 1222 1223 out_be32(&pci->pex_pme_mes_ier, 0); 1224 setbits32(&pci->pex_pme_mes_ier, 1225 PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D); 1226 1227 /* PME Enable */ 1228 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms); 1229 pms |= PCI_PM_CTRL_PME_ENABLE; 1230 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms); 1231 1232 return 0; 1233 } 1234 1235 static void send_pme_turnoff_message(struct pci_controller *hose) 1236 { 1237 struct ccsr_pci __iomem *pci = hose->private_data; 1238 u32 dr; 1239 int i; 1240 1241 /* Send PME_Turn_Off Message Request */ 1242 setbits32(&pci->pex_pmcr, PEX_PMCR_PTOMR); 1243 1244 /* Wait trun off done */ 1245 for (i = 0; i < 150; i++) { 1246 dr = in_be32(&pci->pex_pme_mes_dr); 1247 if (dr) { 1248 out_be32(&pci->pex_pme_mes_dr, dr); 1249 break; 1250 } 1251 1252 udelay(1000); 1253 } 1254 } 1255 1256 static void fsl_pci_syscore_do_suspend(struct pci_controller *hose) 1257 { 1258 send_pme_turnoff_message(hose); 1259 } 1260 1261 static int fsl_pci_syscore_suspend(void) 1262 { 1263 struct pci_controller *hose, *tmp; 1264 1265 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) 1266 fsl_pci_syscore_do_suspend(hose); 1267 1268 return 0; 1269 } 1270 1271 static void fsl_pci_syscore_do_resume(struct pci_controller *hose) 1272 { 1273 struct ccsr_pci __iomem *pci = hose->private_data; 1274 u32 dr; 1275 int i; 1276 1277 /* Send Exit L2 State Message */ 1278 setbits32(&pci->pex_pmcr, PEX_PMCR_EXL2S); 1279 1280 /* Wait exit done */ 1281 for (i = 0; i < 150; i++) { 1282 dr = in_be32(&pci->pex_pme_mes_dr); 1283 if (dr) { 1284 out_be32(&pci->pex_pme_mes_dr, dr); 1285 break; 1286 } 1287 1288 udelay(1000); 1289 } 1290 1291 setup_pci_atmu(hose); 1292 } 1293 1294 static void fsl_pci_syscore_resume(void) 1295 { 1296 struct pci_controller *hose, *tmp; 1297 1298 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) 1299 fsl_pci_syscore_do_resume(hose); 1300 } 1301 1302 static struct syscore_ops pci_syscore_pm_ops = { 1303 .suspend = fsl_pci_syscore_suspend, 1304 .resume = fsl_pci_syscore_resume, 1305 }; 1306 #endif 1307 1308 void fsl_pcibios_fixup_phb(struct pci_controller *phb) 1309 { 1310 #ifdef CONFIG_PM_SLEEP 1311 fsl_pci_pme_probe(phb); 1312 #endif 1313 } 1314 1315 static int add_err_dev(struct platform_device *pdev) 1316 { 1317 struct platform_device *errdev; 1318 struct mpc85xx_edac_pci_plat_data pd = { 1319 .of_node = pdev->dev.of_node 1320 }; 1321 1322 errdev = platform_device_register_resndata(&pdev->dev, 1323 "mpc85xx-pci-edac", 1324 PLATFORM_DEVID_AUTO, 1325 pdev->resource, 1326 pdev->num_resources, 1327 &pd, sizeof(pd)); 1328 1329 return PTR_ERR_OR_ZERO(errdev); 1330 } 1331 1332 static int fsl_pci_probe(struct platform_device *pdev) 1333 { 1334 struct device_node *node; 1335 int ret; 1336 1337 node = pdev->dev.of_node; 1338 ret = fsl_add_bridge(pdev, fsl_pci_primary == node); 1339 if (ret) 1340 return ret; 1341 1342 ret = add_err_dev(pdev); 1343 if (ret) 1344 dev_err(&pdev->dev, "couldn't register error device: %d\n", 1345 ret); 1346 1347 return 0; 1348 } 1349 1350 static struct platform_driver fsl_pci_driver = { 1351 .driver = { 1352 .name = "fsl-pci", 1353 .of_match_table = pci_ids, 1354 }, 1355 .probe = fsl_pci_probe, 1356 .driver_managed_dma = true, 1357 }; 1358 1359 static int __init fsl_pci_init(void) 1360 { 1361 #ifdef CONFIG_PM_SLEEP 1362 register_syscore_ops(&pci_syscore_pm_ops); 1363 #endif 1364 return platform_driver_register(&fsl_pci_driver); 1365 } 1366 arch_initcall(fsl_pci_init); 1367 #endif 1368