drivers/pci/pcie/portdrv.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * File:        portdrv.h
   4  * Purpose:     PCI Express Port Bus Driver's Internal Data Structures
   5  *
   6  * Copyright (C) 2004 Intel
   7  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   8  */
   9
  10 #ifndef _PORTDRV_H_
  11 #define _PORTDRV_H_
  12
  13 #include <linux/compiler.h>
  14
  15 #define PCIE_PORT_DEVICE_MAXSERVICES   5
  16 /*
  17  * The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must
  18  * be one of the first 32 MSI-X entries.  Per PCI r3.0, sec 6.8.3.1, MSI
  19  * supports a maximum of 32 vectors per function.
  20  */
  21 #define PCIE_PORT_MAX_MSI_ENTRIES       32
  22
  23 #define get_descriptor_id(type, service) (((type - 4) << 8) | service)
  24
  25 extern struct bus_type pcie_port_bus_type;
  26 int pcie_port_device_register(struct pci_dev *dev);
  27 #ifdef CONFIG_PM
  28 int pcie_port_device_suspend(struct device *dev);
  29 int pcie_port_device_resume(struct device *dev);
  30 #endif
  31 void pcie_port_device_remove(struct pci_dev *dev);
  32 int __must_check pcie_port_bus_register(void);
  33 void pcie_port_bus_unregister(void);
  34
  35 struct pci_dev;
  36
  37 void pcie_clear_root_pme_status(struct pci_dev *dev);
  38
  39 #ifdef CONFIG_HOTPLUG_PCI_PCIE
  40 extern bool pciehp_msi_disabled;
  41
  42 static inline bool pciehp_no_msi(void)
  43 {
  44         return pciehp_msi_disabled;
  45 }
  46
  47 #else  /* !CONFIG_HOTPLUG_PCI_PCIE */
  48 static inline bool pciehp_no_msi(void) { return false; }
  49 #endif /* !CONFIG_HOTPLUG_PCI_PCIE */
  50
  51 #ifdef CONFIG_PCIE_PME
  52 extern bool pcie_pme_msi_disabled;
  53
  54 static inline void pcie_pme_disable_msi(void)
  55 {
  56         pcie_pme_msi_disabled = true;
  57 }
  58
  59 static inline bool pcie_pme_no_msi(void)
  60 {
  61         return pcie_pme_msi_disabled;
  62 }
  63
  64 void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
  65 #else /* !CONFIG_PCIE_PME */
  66 static inline void pcie_pme_disable_msi(void) {}
  67 static inline bool pcie_pme_no_msi(void) { return false; }
  68 static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
  69 #endif /* !CONFIG_PCIE_PME */
  70
  71 #ifdef CONFIG_ACPI
  72 void pcie_port_acpi_setup(struct pci_dev *port, int *mask);
  73
  74 static inline void pcie_port_platform_notify(struct pci_dev *port, int *mask)
  75 {
  76         pcie_port_acpi_setup(port, mask);
  77 }
  78 #else /* !CONFIG_ACPI */
  79 static inline void pcie_port_platform_notify(struct pci_dev *port, int *mask){}
  80 #endif /* !CONFIG_ACPI */
  81
  82 #endif /* _PORTDRV_H_ */