Hi Joao, [auto build test ERROR on arc/for-next] [also build test ERROR on v4.4-rc2 next-20151124] url: https://github.com/0day-ci/linux/commits/Joao-Pinto/add-new-platform-driver-for-PCI-RC/20151124-194755 base: https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc for-next config: i386-allmodconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/pci/host/pcie-designware.c: In function 'dw_pcie_host_init': drivers/pci/host/pcie-designware.c:555:7: error: implicit declaration of function 'pci_has_flag' [-Werror=implicit-function-declaration] if (!pci_has_flag(PCI_PROBE_ONLY)) { ^ drivers/pci/host/pcie-designware.c:555:20: error: 'PCI_PROBE_ONLY' undeclared (first use in this function) if (!pci_has_flag(PCI_PROBE_ONLY)) { ^ drivers/pci/host/pcie-designware.c:555:20: note: each undeclared identifier is reported only once for each function it appears in drivers/pci/host/pcie-designware.c: In function 'dw_pcie_link_retrain': >> drivers/pci/host/pcie-designware.c:713:23: error: 'LINK_CONTROL_LINK_STATUS_REG' undeclared (first use in this function) dw_pcie_readl_rc(pp, LINK_CONTROL_LINK_STATUS_REG, &val); ^ >> drivers/pci/host/pcie-designware.c:714:14: error: 'PCIE_RETRAIN_LINK_MASK' undeclared (first use in this function) val = val | PCIE_RETRAIN_LINK_MASK; ^ cc1: some warnings being treated as errors vim +/LINK_CONTROL_LINK_STATUS_REG +713 drivers/pci/host/pcie-designware.c 549 550 #ifdef CONFIG_ARM 551 /* support old dtbs that incorrectly describe IRQs */ 552 pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); 553 #endif 554 > 555 if (!pci_has_flag(PCI_PROBE_ONLY)) { 556 pci_bus_size_bridges(bus); 557 pci_bus_assign_resources(bus); 558 559 list_for_each_entry(child, &bus->children, node) 560 pcie_bus_configure_settings(child); 561 } 562 563 pci_bus_add_devices(bus); 564 return 0; 565 } 566 567 static int dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus, 568 u32 devfn, int where, int size, u32 *val) 569 { 570 int ret, type; 571 u32 busdev, cfg_size; 572 u64 cpu_addr; 573 void __iomem *va_cfg_base; 574 575 busdev = PCIE_ATU_BUS(bus->number) | PCIE_ATU_DEV(PCI_SLOT(devfn)) | 576 PCIE_ATU_FUNC(PCI_FUNC(devfn)); 577 578 if (bus->parent->number == pp->root_bus_nr) { 579 type = PCIE_ATU_TYPE_CFG0; 580 cpu_addr = pp->cfg0_base; 581 cfg_size = pp->cfg0_size; 582 va_cfg_base = pp->va_cfg0_base; 583 } else { 584 type = PCIE_ATU_TYPE_CFG1; 585 cpu_addr = pp->cfg1_base; 586 cfg_size = pp->cfg1_size; 587 va_cfg_base = pp->va_cfg1_base; 588 } 589 590 dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0, 591 type, cpu_addr, 592 busdev, cfg_size); 593 ret = dw_pcie_cfg_read(va_cfg_base + where, size, val); 594 dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0, 595 PCIE_ATU_TYPE_IO, pp->io_base, 596 pp->io_bus_addr, pp->io_size); 597 598 return ret; 599 } 600 601 static int dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, 602 u32 devfn, int where, int size, u32 val) 603 { 604 int ret, type; 605 u32 busdev, cfg_size; 606 u64 cpu_addr; 607 void __iomem *va_cfg_base; 608 609 busdev = PCIE_ATU_BUS(bus->number) | PCIE_ATU_DEV(PCI_SLOT(devfn)) | 610 PCIE_ATU_FUNC(PCI_FUNC(devfn)); 611 612 if (bus->parent->number == pp->root_bus_nr) { 613 type = PCIE_ATU_TYPE_CFG0; 614 cpu_addr = pp->cfg0_base; 615 cfg_size = pp->cfg0_size; 616 va_cfg_base = pp->va_cfg0_base; 617 } else { 618 type = PCIE_ATU_TYPE_CFG1; 619 cpu_addr = pp->cfg1_base; 620 cfg_size = pp->cfg1_size; 621 va_cfg_base = pp->va_cfg1_base; 622 } 623 624 dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0, 625 type, cpu_addr, 626 busdev, cfg_size); 627 ret = dw_pcie_cfg_write(va_cfg_base + where, size, val); 628 dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0, 629 PCIE_ATU_TYPE_IO, pp->io_base, 630 pp->io_bus_addr, pp->io_size); 631 632 return ret; 633 } 634 635 static int dw_pcie_valid_config(struct pcie_port *pp, 636 struct pci_bus *bus, int dev) 637 { 638 /* If there is no link, then there is no device */ 639 if (bus->number != pp->root_bus_nr) { 640 if (!dw_pcie_link_up(pp)) 641 return 0; 642 } 643 644 /* access only one slot on each root port */ 645 if (bus->number == pp->root_bus_nr && dev > 0) 646 return 0; 647 648 /* 649 * do not read more than one device on the bus directly attached 650 * to RC's (Virtual Bridge's) DS side. 651 */ 652 if (bus->primary == pp->root_bus_nr && dev > 0) 653 return 0; 654 655 return 1; 656 } 657 658 static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, 659 int size, u32 *val) 660 { 661 struct pcie_port *pp = bus->sysdata; 662 int ret; 663 664 if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) { 665 *val = 0xffffffff; 666 return PCIBIOS_DEVICE_NOT_FOUND; 667 } 668 669 if (bus->number != pp->root_bus_nr) 670 if (pp->ops->rd_other_conf) 671 ret = pp->ops->rd_other_conf(pp, bus, devfn, 672 where, size, val); 673 else 674 ret = dw_pcie_rd_other_conf(pp, bus, devfn, 675 where, size, val); 676 else 677 ret = dw_pcie_rd_own_conf(pp, where, size, val); 678 679 return ret; 680 } 681 682 static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn, 683 int where, int size, u32 val) 684 { 685 struct pcie_port *pp = bus->sysdata; 686 int ret; 687 688 if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) 689 return PCIBIOS_DEVICE_NOT_FOUND; 690 691 if (bus->number != pp->root_bus_nr) 692 if (pp->ops->wr_other_conf) 693 ret = pp->ops->wr_other_conf(pp, bus, devfn, 694 where, size, val); 695 else 696 ret = dw_pcie_wr_other_conf(pp, bus, devfn, 697 where, size, val); 698 else 699 ret = dw_pcie_wr_own_conf(pp, where, size, val); 700 701 return ret; 702 } 703 704 static struct pci_ops dw_pcie_ops = { 705 .read = dw_pcie_rd_conf, 706 .write = dw_pcie_wr_conf, 707 }; 708 709 void dw_pcie_link_retrain(struct pcie_port *pp) 710 { 711 u32 val = 0; 712 > 713 dw_pcie_readl_rc(pp, LINK_CONTROL_LINK_STATUS_REG, &val); > 714 val = val | PCIE_RETRAIN_LINK_MASK; 715 dw_pcie_writel_rc(pp, val, LINK_CONTROL_LINK_STATUS_REG); 716 } 717 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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