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kernel/linux-imx6_3.14.28/include/asm-generic/pci-bridge.h 1.69 KB
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  /*
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version
   * 2 of the License, or (at your option) any later version.
   */
  #ifndef _ASM_GENERIC_PCI_BRIDGE_H
  #define _ASM_GENERIC_PCI_BRIDGE_H
  
  #ifdef __KERNEL__
  
  enum {
  	/* Force re-assigning all resources (ignore firmware
  	 * setup completely)
  	 */
  	PCI_REASSIGN_ALL_RSRC	= 0x00000001,
  
  	/* Re-assign all bus numbers */
  	PCI_REASSIGN_ALL_BUS	= 0x00000002,
  
  	/* Do not try to assign, just use existing setup */
  	PCI_PROBE_ONLY		= 0x00000004,
  
  	/* Don't bother with ISA alignment unless the bridge has
  	 * ISA forwarding enabled
  	 */
  	PCI_CAN_SKIP_ISA_ALIGN	= 0x00000008,
  
  	/* Enable domain numbers in /proc */
  	PCI_ENABLE_PROC_DOMAINS	= 0x00000010,
  	/* ... except for domain 0 */
  	PCI_COMPAT_DOMAIN_0	= 0x00000020,
  
  	/* PCIe downstream ports are bridges that normally lead to only a
  	 * device 0, but if this is set, we scan all possible devices, not
  	 * just device 0.
  	 */
  	PCI_SCAN_ALL_PCIE_DEVS	= 0x00000040,
  };
  
  #ifdef CONFIG_PCI
  extern unsigned int pci_flags;
  
  static inline void pci_set_flags(int flags)
  {
  	pci_flags = flags;
  }
  
  static inline void pci_add_flags(int flags)
  {
  	pci_flags |= flags;
  }
  
  static inline void pci_clear_flags(int flags)
  {
  	pci_flags &= ~flags;
  }
  
  static inline int pci_has_flag(int flag)
  {
  	return pci_flags & flag;
  }
  #else
  static inline void pci_set_flags(int flags) { }
  static inline void pci_add_flags(int flags) { }
  static inline void pci_clear_flags(int flags) { }
  static inline int pci_has_flag(int flag)
  {
  	return 0;
  }
  #endif	/* CONFIG_PCI */
  
  #endif	/* __KERNEL__ */
  #endif	/* _ASM_GENERIC_PCI_BRIDGE_H */