xref: /linux/drivers/pci/pcie/portdrv.h (revision d39d0ed196aa1685bb24771e92f78633c66ac9cb)
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 
23 extern struct bus_type pcie_port_bus_type;
24 extern int pcie_port_device_register(struct pci_dev *dev);
25 #ifdef CONFIG_PM
26 extern int pcie_port_device_suspend(struct device *dev);
27 extern int pcie_port_device_resume(struct device *dev);
28 #endif
29 extern void pcie_port_device_remove(struct pci_dev *dev);
30 extern int __must_check pcie_port_bus_register(void);
31 extern void pcie_port_bus_unregister(void);
32 
33 #ifdef CONFIG_PCIE_PME
34 extern bool pcie_pme_msi_disabled;
35 
36 static inline void pcie_pme_disable_msi(void)
37 {
38 	pcie_pme_msi_disabled = true;
39 }
40 
41 static inline bool pcie_pme_no_msi(void)
42 {
43 	return pcie_pme_msi_disabled;
44 }
45 #else /* !CONFIG_PCIE_PME */
46 static inline void pcie_pme_disable_msi(void) {}
47 static inline bool pcie_pme_no_msi(void) { return false; }
48 #endif /* !CONFIG_PCIE_PME */
49 
50 #endif /* _PORTDRV_H_ */
51