1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 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 /* Service Type */ 15 #define PCIE_PORT_SERVICE_PME_SHIFT 0 /* Power Management Event */ 16 #define PCIE_PORT_SERVICE_PME (1 << PCIE_PORT_SERVICE_PME_SHIFT) 17 #define PCIE_PORT_SERVICE_AER_SHIFT 1 /* Advanced Error Reporting */ 18 #define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT) 19 #define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */ 20 #define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT) 21 #define PCIE_PORT_SERVICE_DPC_SHIFT 3 /* Downstream Port Containment */ 22 #define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT) 23 #define PCIE_PORT_SERVICE_BWNOTIF_SHIFT 4 /* Bandwidth notification */ 24 #define PCIE_PORT_SERVICE_BWNOTIF (1 << PCIE_PORT_SERVICE_BWNOTIF_SHIFT) 25 26 #define PCIE_PORT_DEVICE_MAXSERVICES 5 27 28 extern bool pcie_ports_dpc_native; 29 30 #ifdef CONFIG_PCIEAER 31 int pcie_aer_init(void); 32 #else 33 static inline int pcie_aer_init(void) { return 0; } 34 #endif 35 36 #ifdef CONFIG_HOTPLUG_PCI_PCIE 37 int pcie_hp_init(void); 38 #else 39 static inline int pcie_hp_init(void) { return 0; } 40 #endif 41 42 #ifdef CONFIG_PCIE_PME 43 int pcie_pme_init(void); 44 #else 45 static inline int pcie_pme_init(void) { return 0; } 46 #endif 47 48 #ifdef CONFIG_PCIE_DPC 49 int pcie_dpc_init(void); 50 #else 51 static inline int pcie_dpc_init(void) { return 0; } 52 #endif 53 54 /* Port Type */ 55 #define PCIE_ANY_PORT (~0) 56 57 struct pcie_device { 58 int irq; /* Service IRQ/MSI/MSI-X Vector */ 59 struct pci_dev *port; /* Root/Upstream/Downstream Port */ 60 u32 service; /* Port service this device represents */ 61 void *priv_data; /* Service Private Data */ 62 struct device device; /* Generic Device Interface */ 63 }; 64 #define to_pcie_device(d) container_of(d, struct pcie_device, device) 65 66 static inline void set_service_data(struct pcie_device *dev, void *data) 67 { 68 dev->priv_data = data; 69 } 70 71 static inline void *get_service_data(struct pcie_device *dev) 72 { 73 return dev->priv_data; 74 } 75 76 struct pcie_port_service_driver { 77 const char *name; 78 int (*probe)(struct pcie_device *dev); 79 void (*remove)(struct pcie_device *dev); 80 int (*suspend)(struct pcie_device *dev); 81 int (*resume_noirq)(struct pcie_device *dev); 82 int (*resume)(struct pcie_device *dev); 83 int (*runtime_suspend)(struct pcie_device *dev); 84 int (*runtime_resume)(struct pcie_device *dev); 85 86 int (*slot_reset)(struct pcie_device *dev); 87 88 int port_type; /* Type of the port this driver can handle */ 89 u32 service; /* Port service this device represents */ 90 91 struct device_driver driver; 92 }; 93 #define to_service_driver(d) \ 94 container_of(d, struct pcie_port_service_driver, driver) 95 96 int pcie_port_service_register(struct pcie_port_service_driver *new); 97 void pcie_port_service_unregister(struct pcie_port_service_driver *new); 98 99 extern struct bus_type pcie_port_bus_type; 100 101 struct pci_dev; 102 103 #ifdef CONFIG_PCIE_PME 104 extern bool pcie_pme_msi_disabled; 105 106 static inline void pcie_pme_disable_msi(void) 107 { 108 pcie_pme_msi_disabled = true; 109 } 110 111 static inline bool pcie_pme_no_msi(void) 112 { 113 return pcie_pme_msi_disabled; 114 } 115 116 void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable); 117 #else /* !CONFIG_PCIE_PME */ 118 static inline void pcie_pme_disable_msi(void) {} 119 static inline bool pcie_pme_no_msi(void) { return false; } 120 static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {} 121 #endif /* !CONFIG_PCIE_PME */ 122 123 struct device *pcie_port_find_device(struct pci_dev *dev, u32 service); 124 #endif /* _PORTDRV_H_ */ 125