drivers/pci/pcie/portdrv.h

   1 /*
   2  * File:        portdrv.h
   3  * Purpose:     PCI Express Port Bus Driver's Internal Data Structures
   4  *
   5  * Copyright (C) 2004 Intel
   6  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   7  */
   8
   9 #ifndef _PORTDRV_H_
  10 #define _PORTDRV_H_
  11
  12 #include <linux/compiler.h>
  13
  14 #define PCIE_PORT_DEVICE_MAXSERVICES   4
  15 /*
  16  * According to the PCI Express Base Specification 2.0, the indices of
  17  * the MSI-X table entires used by port services must not exceed 31
  18  */
  19 #define PCIE_PORT_MAX_MSIX_ENTRIES      32
  20
  21 #define get_descriptor_id(type, service) (((type - 4) << 4) | service)
  22
  23 extern struct bus_type pcie_port_bus_type;
  24 extern int pcie_port_device_register(struct pci_dev *dev);
  25 #ifdef CONFIG_PM
  26 extern int pcie_port_device_suspend(struct device *dev);
  27 extern int pcie_port_device_resume(struct device *dev);
  28 #endif
  29 extern void pcie_port_device_remove(struct pci_dev *dev);
  30 extern int __must_check pcie_port_bus_register(void);
  31 extern void pcie_port_bus_unregister(void);
  32
  33 #ifdef CONFIG_PCIE_PME
  34 extern bool pcie_pme_msi_disabled;
  35
  36 static inline void pcie_pme_disable_msi(void)
  37 {
  38         pcie_pme_msi_disabled = true;
  39 }
  40
  41 static inline bool pcie_pme_no_msi(void)
  42 {
  43         return pcie_pme_msi_disabled;
  44 }
  45 #else /* !CONFIG_PCIE_PME */
  46 static inline void pcie_pme_disable_msi(void) {}
  47 static inline bool pcie_pme_no_msi(void) { return false; }
  48 #endif /* !CONFIG_PCIE_PME */
  49
  50 #endif /* _PORTDRV_H_ */