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_ */ 83