1/* SPDX-License-Identifier: GPL-2.0-only */
 2
 3#ifndef __ASM_GENERIC_PCI_H
 4#define __ASM_GENERIC_PCI_H
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5
 6#ifndef PCIBIOS_MIN_IO
 7#define PCIBIOS_MIN_IO		0
 8#endif
 
 
 
 
 9
10#ifndef PCIBIOS_MIN_MEM
11#define PCIBIOS_MIN_MEM		0
12#endif
 
13
14#ifndef pcibios_assign_all_busses
15/* For bootloaders that do not initialize the PCI bus */
16#define pcibios_assign_all_busses() 1
17#endif
18
19/* Enable generic resource mapping code in drivers/pci/ */
20#define ARCH_GENERIC_PCI_MMAP_RESOURCE
21
22#ifdef CONFIG_PCI_DOMAINS
23static inline int pci_proc_domain(struct pci_bus *bus)
24{
25	/* always show the domain in /proc */
26	return 1;
27}
28#endif /* CONFIG_PCI_DOMAINS */
 
 
 
 
 
 
 
 
29
30#endif /* __ASM_GENERIC_PCI_H */

 1/*
 2 * linux/include/asm-generic/pci.h
 3 *
 4 *  Copyright (C) 2003 Russell King
 5 */
 6#ifndef _ASM_GENERIC_PCI_H
 7#define _ASM_GENERIC_PCI_H
 8
 9/**
10 * pcibios_resource_to_bus - convert resource to PCI bus address
11 * @dev: device which owns this resource
12 * @region: converted bus-centric region (start,end)
13 * @res: resource to convert
14 *
15 * Convert a resource to a PCI device bus address or bus window.
16 */
17static inline void
18pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
19			 struct resource *res)
20{
21	region->start = res->start;
22	region->end = res->end;
23}
24
25static inline void
26pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
27			struct pci_bus_region *region)
28{
29	res->start = region->start;
30	res->end = region->end;
31}
32
33static inline struct resource *
34pcibios_select_root(struct pci_dev *pdev, struct resource *res)
35{
36	struct resource *root = NULL;
37
38	if (res->flags & IORESOURCE_IO)
39		root = &ioport_resource;
40	if (res->flags & IORESOURCE_MEM)
41		root = &iomem_resource;
42
43	return root;
44}
45
46#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
47static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
48{
49	return channel ? 15 : 14;
 
50}
51#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
52
53/*
54 * By default, assume that no iommu is in use and that the PCI
55 * space is mapped to address physical 0.
56 */
57#ifndef PCI_DMA_BUS_IS_PHYS
58#define PCI_DMA_BUS_IS_PHYS	(1)
59#endif
60
61#endif /* _ASM_GENERIC_PCI_H */