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_BWCTRL_SHIFT 4 /* Bandwidth Controller (notifications) */ |
24 | #define PCIE_PORT_SERVICE_BWCTRL (1 << PCIE_PORT_SERVICE_BWCTRL_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 | int pcie_bwctrl_init(void); |
55 | |
56 | /* Port Type */ |
57 | #define PCIE_ANY_PORT (~0) |
58 | |
59 | struct pcie_device { |
60 | int irq; /* Service IRQ/MSI/MSI-X Vector */ |
61 | struct pci_dev *port; /* Root/Upstream/Downstream Port */ |
62 | u32 service; /* Port service this device represents */ |
63 | void *priv_data; /* Service Private Data */ |
64 | struct device device; /* Generic Device Interface */ |
65 | }; |
66 | #define to_pcie_device(d) container_of(d, struct pcie_device, device) |
67 | |
68 | static inline void set_service_data(struct pcie_device *dev, void *data) |
69 | { |
70 | dev->priv_data = data; |
71 | } |
72 | |
73 | static inline void *get_service_data(struct pcie_device *dev) |
74 | { |
75 | return dev->priv_data; |
76 | } |
77 | |
78 | struct pcie_port_service_driver { |
79 | const char *name; |
80 | int (*probe)(struct pcie_device *dev); |
81 | void (*remove)(struct pcie_device *dev); |
82 | int (*suspend)(struct pcie_device *dev); |
83 | int (*resume_noirq)(struct pcie_device *dev); |
84 | int (*resume)(struct pcie_device *dev); |
85 | int (*runtime_suspend)(struct pcie_device *dev); |
86 | int (*runtime_resume)(struct pcie_device *dev); |
87 | |
88 | int (*slot_reset)(struct pcie_device *dev); |
89 | |
90 | int port_type; /* Type of the port this driver can handle */ |
91 | u32 service; /* Port service this device represents */ |
92 | |
93 | struct device_driver driver; |
94 | }; |
95 | #define to_service_driver(d) \ |
96 | container_of(d, struct pcie_port_service_driver, driver) |
97 | |
98 | int pcie_port_service_register(struct pcie_port_service_driver *new); |
99 | void pcie_port_service_unregister(struct pcie_port_service_driver *new); |
100 | |
101 | extern const struct bus_type pcie_port_bus_type; |
102 | |
103 | struct pci_dev; |
104 | |
105 | #ifdef CONFIG_PCIE_PME |
106 | extern bool pcie_pme_msi_disabled; |
107 | |
108 | static inline void pcie_pme_disable_msi(void) |
109 | { |
110 | pcie_pme_msi_disabled = true; |
111 | } |
112 | |
113 | static inline bool pcie_pme_no_msi(void) |
114 | { |
115 | return pcie_pme_msi_disabled; |
116 | } |
117 | |
118 | void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable); |
119 | #else /* !CONFIG_PCIE_PME */ |
120 | static inline void pcie_pme_disable_msi(void) {} |
121 | static inline bool pcie_pme_no_msi(void) { return false; } |
122 | static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {} |
123 | #endif /* !CONFIG_PCIE_PME */ |
124 | |
125 | struct device *pcie_port_find_device(struct pci_dev *dev, u32 service); |
126 | #endif /* _PORTDRV_H_ */ |
127 | |