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
15 struct 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
38 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
39 struct vm_area_struct *vma,
40 enum pci_mmap_state mmap_state);
41
42 char *pci_get_legacy_mem(struct pci_bus *bus);
43 int pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
44 int pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
45
46 struct 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
59 extern struct pci_ops pci_root_ops;
60
pci_proc_domain(struct pci_bus * bus)61 static 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
pci_get_legacy_ide_irq(struct pci_dev * dev,int channel)67 static 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 */
73