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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 entires 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
23extern struct bus_type pcie_port_bus_type;
24extern int pcie_port_device_register(struct pci_dev *dev);
25#ifdef CONFIG_PM
26extern int pcie_port_device_suspend(struct device *dev);
27extern int pcie_port_device_resume(struct device *dev);
28#endif
29extern void pcie_port_device_remove(struct pci_dev *dev);
30extern int __must_check pcie_port_bus_register(void);
31extern void pcie_port_bus_unregister(void);
32
33struct pci_dev;
34
35extern void pcie_clear_root_pme_status(struct pci_dev *dev);
36
37#ifdef CONFIG_HOTPLUG_PCI_PCIE
38extern bool pciehp_msi_disabled;
39
40static inline bool pciehp_no_msi(void)
41{
42 return pciehp_msi_disabled;
43}
44
45#else /* !CONFIG_HOTPLUG_PCI_PCIE */
46static inline bool pciehp_no_msi(void) { return false; }
47#endif /* !CONFIG_HOTPLUG_PCI_PCIE */
48
49#ifdef CONFIG_PCIE_PME
50extern bool pcie_pme_msi_disabled;
51
52static inline void pcie_pme_disable_msi(void)
53{
54 pcie_pme_msi_disabled = true;
55}
56
57static inline bool pcie_pme_no_msi(void)
58{
59 return pcie_pme_msi_disabled;
60}
61
62extern void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
63#else /* !CONFIG_PCIE_PME */
64static inline void pcie_pme_disable_msi(void) {}
65static inline bool pcie_pme_no_msi(void) { return false; }
66static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
67#endif /* !CONFIG_PCIE_PME */
68
69#ifdef CONFIG_ACPI
70extern int pcie_port_acpi_setup(struct pci_dev *port, int *mask);
71
72static 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 */
77static 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_ */
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
28extern bool pcie_ports_dpc_native;
29
30#ifdef CONFIG_PCIEAER
31int pcie_aer_init(void);
32int pcie_aer_is_native(struct pci_dev *dev);
33#else
34static inline int pcie_aer_init(void) { return 0; }
35static inline int pcie_aer_is_native(struct pci_dev *dev) { return 0; }
36#endif
37
38#ifdef CONFIG_HOTPLUG_PCI_PCIE
39int pcie_hp_init(void);
40#else
41static inline int pcie_hp_init(void) { return 0; }
42#endif
43
44#ifdef CONFIG_PCIE_PME
45int pcie_pme_init(void);
46#else
47static inline int pcie_pme_init(void) { return 0; }
48#endif
49
50#ifdef CONFIG_PCIE_DPC
51int pcie_dpc_init(void);
52#else
53static inline int pcie_dpc_init(void) { return 0; }
54#endif
55
56/* Port Type */
57#define PCIE_ANY_PORT (~0)
58
59struct 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
68static inline void set_service_data(struct pcie_device *dev, void *data)
69{
70 dev->priv_data = data;
71}
72
73static inline void *get_service_data(struct pcie_device *dev)
74{
75 return dev->priv_data;
76}
77
78struct 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
98int pcie_port_service_register(struct pcie_port_service_driver *new);
99void pcie_port_service_unregister(struct pcie_port_service_driver *new);
100
101extern struct bus_type pcie_port_bus_type;
102
103struct pci_dev;
104
105#ifdef CONFIG_PCIE_PME
106extern bool pcie_pme_msi_disabled;
107
108static inline void pcie_pme_disable_msi(void)
109{
110 pcie_pme_msi_disabled = true;
111}
112
113static inline bool pcie_pme_no_msi(void)
114{
115 return pcie_pme_msi_disabled;
116}
117
118void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
119#else /* !CONFIG_PCIE_PME */
120static inline void pcie_pme_disable_msi(void) {}
121static inline bool pcie_pme_no_msi(void) { return false; }
122static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
123#endif /* !CONFIG_PCIE_PME */
124
125struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);
126#endif /* _PORTDRV_H_ */