linux/include/asm-generic/pci-bridge.h
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   1/*
   2 * This program is free software; you can redistribute it and/or
   3 * modify it under the terms of the GNU General Public License
   4 * as published by the Free Software Foundation; either version
   5 * 2 of the License, or (at your option) any later version.
   6 */
   7#ifndef _ASM_GENERIC_PCI_BRIDGE_H
   8#define _ASM_GENERIC_PCI_BRIDGE_H
   9
  10#ifdef __KERNEL__
  11
  12enum {
  13        /* Force re-assigning all resources (ignore firmware
  14         * setup completely)
  15         */
  16        PCI_REASSIGN_ALL_RSRC   = 0x00000001,
  17
  18        /* Re-assign all bus numbers */
  19        PCI_REASSIGN_ALL_BUS    = 0x00000002,
  20
  21        /* Do not try to assign, just use existing setup */
  22        PCI_PROBE_ONLY          = 0x00000004,
  23
  24        /* Don't bother with ISA alignment unless the bridge has
  25         * ISA forwarding enabled
  26         */
  27        PCI_CAN_SKIP_ISA_ALIGN  = 0x00000008,
  28
  29        /* Enable domain numbers in /proc */
  30        PCI_ENABLE_PROC_DOMAINS = 0x00000010,
  31        /* ... except for domain 0 */
  32        PCI_COMPAT_DOMAIN_0     = 0x00000020,
  33
  34        /* PCIe downstream ports are bridges that normally lead to only a
  35         * device 0, but if this is set, we scan all possible devices, not
  36         * just device 0.
  37         */
  38        PCI_SCAN_ALL_PCIE_DEVS  = 0x00000040,
  39};
  40
  41#ifdef CONFIG_PCI
  42extern unsigned int pci_flags;
  43
  44static inline void pci_set_flags(int flags)
  45{
  46        pci_flags = flags;
  47}
  48
  49static inline void pci_add_flags(int flags)
  50{
  51        pci_flags |= flags;
  52}
  53
  54static inline void pci_clear_flags(int flags)
  55{
  56        pci_flags &= ~flags;
  57}
  58
  59static inline int pci_has_flag(int flag)
  60{
  61        return pci_flags & flag;
  62}
  63#else
  64static inline void pci_set_flags(int flags) { }
  65static inline void pci_add_flags(int flags) { }
  66static inline void pci_clear_flags(int flags) { }
  67static inline int pci_has_flag(int flag)
  68{
  69        return 0;
  70}
  71#endif  /* CONFIG_PCI */
  72
  73#endif  /* __KERNEL__ */
  74#endif  /* _ASM_GENERIC_PCI_BRIDGE_H */
  75
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