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 entries 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 int pcie_port_device_register(struct pci_dev *dev);
  25 #ifdef CONFIG_PM
  26 int pcie_port_device_suspend(struct device *dev);
  27 int pcie_port_device_resume(struct device *dev);
  28 #endif
  29 void pcie_port_device_remove(struct pci_dev *dev);
  30 int __must_check pcie_port_bus_register(void);
  31 void pcie_port_bus_unregister(void);
  32
  33 struct pci_dev;
  34
  35 void pcie_clear_root_pme_status(struct pci_dev *dev);
  36
  37 #ifdef CONFIG_HOTPLUG_PCI_PCIE
  38 extern bool pciehp_msi_disabled;
  39
  40 static inline bool pciehp_no_msi(void)
  41 {
  42         return pciehp_msi_disabled;
  43 }
  44
  45 #else  /* !CONFIG_HOTPLUG_PCI_PCIE */
  46 static inline bool pciehp_no_msi(void) { return false; }
  47 #endif /* !CONFIG_HOTPLUG_PCI_PCIE */
  48
  49 #ifdef CONFIG_PCIE_PME
  50 extern bool pcie_pme_msi_disabled;
  51
  52 static inline void pcie_pme_disable_msi(void)
  53 {
  54         pcie_pme_msi_disabled = true;
  55 }
  56
  57 static inline bool pcie_pme_no_msi(void)
  58 {
  59         return pcie_pme_msi_disabled;
  60 }
  61
  62 void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
  63 #else /* !CONFIG_PCIE_PME */
  64 static inline void pcie_pme_disable_msi(void) {}
  65 static inline bool pcie_pme_no_msi(void) { return false; }
  66 static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
  67 #endif /* !CONFIG_PCIE_PME */
  68
  69 #ifdef CONFIG_ACPI
  70 int pcie_port_acpi_setup(struct pci_dev *port, int *mask);
  71
  72 static inline int pcie_port_platform_notify(struct pci_dev *port, int *mask)
  73 {
  74         return pcie_port_acpi_setup(port, mask);
  75 }
  76 #else /* !CONFIG_ACPI */
  77 static inline int pcie_port_platform_notify(struct pci_dev *port, int *mask)
  78 {
  79         return 0;
  80 }
  81 #endif /* !CONFIG_ACPI */
  82
  83 #endif /* _PORTDRV_H_ */