1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_IA64_PCI_H
 3#define _ASM_IA64_PCI_H
 4
 5#include <linux/mm.h>
 6#include <linux/slab.h>
 7#include <linux/spinlock.h>
 8#include <linux/string.h>
 9#include <linux/types.h>
10#include <linux/scatterlist.h>
11
12#include <asm/io.h>
13#include <asm/hw_irq.h>
14
15struct pci_vector_struct {
16	__u16 segment;	/* PCI Segment number */
17	__u16 bus;	/* PCI Bus number */
18	__u32 pci_id;	/* ACPI split 16 bits device, 16 bits function (see section 6.1.1) */
19	__u8 pin;	/* PCI PIN (0 = A, 1 = B, 2 = C, 3 = D) */
20	__u32 irq;	/* IRQ assigned */
21};
22
23/*
24 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
25 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
26 * loader.
27 */
28#define pcibios_assign_all_busses()     0
29
30#define PCIBIOS_MIN_IO		0x1000
31#define PCIBIOS_MIN_MEM		0x10000000
32
33#define HAVE_PCI_MMAP
34#define ARCH_GENERIC_PCI_MMAP_RESOURCE
35#define arch_can_pci_mmap_wc()	1
36
37#define HAVE_PCI_LEGACY
38extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
39				      struct vm_area_struct *vma,
40				      enum pci_mmap_state mmap_state);
41
42char *pci_get_legacy_mem(struct pci_bus *bus);
43int pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
44int pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
45
46struct pci_controller {
47	struct acpi_device *companion;
48	void *iommu;
49	int segment;
50	int node;		/* nearest node with memory or NUMA_NO_NODE for global allocation */
51
52	void *platform_data;
53};
54
55
56#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
57#define pci_domain_nr(busdev)    (PCI_CONTROLLER(busdev)->segment)
58
59extern struct pci_ops pci_root_ops;
60
61static inline int pci_proc_domain(struct pci_bus *bus)
62{
63	return (pci_domain_nr(bus) != 0);
64}
65
66#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
67static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
68{
69	return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
70}
71
72#endif /* _ASM_IA64_PCI_H */