tjh.dev
Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * File: pcieport_if.h
4 * Purpose: PCI Express Port Bus Driver's IF Data Structure
5 *
6 * Copyright (C) 2004 Intel
7 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
8 */
9
10#ifndef _PCIEPORT_IF_H_
11#define _PCIEPORT_IF_H_
12
13/* Port Type */
14#define PCIE_ANY_PORT (~0)
15
16/* Service Type */
17#define PCIE_PORT_SERVICE_PME_SHIFT 0 /* Power Management Event */
18#define PCIE_PORT_SERVICE_PME (1 << PCIE_PORT_SERVICE_PME_SHIFT)
19#define PCIE_PORT_SERVICE_AER_SHIFT 1 /* Advanced Error Reporting */
20#define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT)
21#define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */
22#define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT)
23#define PCIE_PORT_SERVICE_VC_SHIFT 3 /* Virtual Channel */
24#define PCIE_PORT_SERVICE_VC (1 << PCIE_PORT_SERVICE_VC_SHIFT)
25#define PCIE_PORT_SERVICE_DPC_SHIFT 4 /* Downstream Port Containment */
26#define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT)
27
28struct pcie_device {
29 int irq; /* Service IRQ/MSI/MSI-X Vector */
30 struct pci_dev *port; /* Root/Upstream/Downstream Port */
31 u32 service; /* Port service this device represents */
32 void *priv_data; /* Service Private Data */
33 struct device device; /* Generic Device Interface */
34};
35#define to_pcie_device(d) container_of(d, struct pcie_device, device)
36
37static inline void set_service_data(struct pcie_device *dev, void *data)
38{
39 dev->priv_data = data;
40}
41
42static inline void *get_service_data(struct pcie_device *dev)
43{
44 return dev->priv_data;
45}
46
47struct pcie_port_service_driver {
48 const char *name;
49 int (*probe) (struct pcie_device *dev);
50 void (*remove) (struct pcie_device *dev);
51 int (*suspend) (struct pcie_device *dev);
52 int (*resume) (struct pcie_device *dev);
53
54 /* Device driver may resume normal operations */
55 void (*error_resume)(struct pci_dev *dev);
56
57 /* Link Reset Capability - AER service driver specific */
58 pci_ers_result_t (*reset_link) (struct pci_dev *dev);
59
60 int port_type; /* Type of the port this driver can handle */
61 u32 service; /* Port service this device represents */
62
63 struct device_driver driver;
64};
65#define to_service_driver(d) \
66 container_of(d, struct pcie_port_service_driver, driver)
67
68int pcie_port_service_register(struct pcie_port_service_driver *new);
69void pcie_port_service_unregister(struct pcie_port_service_driver *new);
70
71#endif /* _PCIEPORT_IF_H_ */