tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_PCI_H
2#define _ASM_X86_PCI_H
3
4#include <linux/mm.h> /* for struct page */
5#include <linux/types.h>
6#include <linux/slab.h>
7#include <linux/string.h>
8#include <linux/scatterlist.h>
9#include <asm/io.h>
10#include <asm/x86_init.h>
11
12#ifdef __KERNEL__
13
14struct pci_sysdata {
15 int domain; /* PCI domain */
16 int node; /* NUMA node */
17#ifdef CONFIG_ACPI
18 struct acpi_device *companion; /* ACPI companion device */
19#endif
20#ifdef CONFIG_X86_64
21 void *iommu; /* IOMMU private data */
22#endif
23};
24
25extern int pci_routeirq;
26extern int noioapicquirk;
27extern int noioapicreroute;
28
29#ifdef CONFIG_PCI
30
31#ifdef CONFIG_PCI_DOMAINS
32static inline int pci_domain_nr(struct pci_bus *bus)
33{
34 struct pci_sysdata *sd = bus->sysdata;
35 return sd->domain;
36}
37
38static inline int pci_proc_domain(struct pci_bus *bus)
39{
40 return pci_domain_nr(bus);
41}
42#endif
43
44/* Can be used to override the logic in pci_scan_bus for skipping
45 already-configured bus numbers - to be used for buggy BIOSes
46 or architectures with incomplete PCI setup by the loader */
47
48extern unsigned int pcibios_assign_all_busses(void);
49extern int pci_legacy_init(void);
50# ifdef CONFIG_ACPI
51# define x86_default_pci_init pci_acpi_init
52# else
53# define x86_default_pci_init pci_legacy_init
54# endif
55#else
56# define pcibios_assign_all_busses() 0
57# define x86_default_pci_init NULL
58#endif
59
60extern unsigned long pci_mem_start;
61#define PCIBIOS_MIN_IO 0x1000
62#define PCIBIOS_MIN_MEM (pci_mem_start)
63
64#define PCIBIOS_MIN_CARDBUS_IO 0x4000
65
66extern int pcibios_enabled;
67void pcibios_config_init(void);
68void pcibios_scan_root(int bus);
69
70void pcibios_set_master(struct pci_dev *dev);
71struct irq_routing_table *pcibios_get_irq_routing_table(void);
72int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
73
74
75#define HAVE_PCI_MMAP
76extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
77 enum pci_mmap_state mmap_state,
78 int write_combine);
79
80
81#ifdef CONFIG_PCI
82extern void early_quirks(void);
83#else
84static inline void early_quirks(void) { }
85#endif
86
87extern void pci_iommu_alloc(void);
88
89#ifdef CONFIG_PCI_MSI
90/* implemented in arch/x86/kernel/apic/io_apic. */
91struct msi_desc;
92int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
93void native_teardown_msi_irq(unsigned int irq);
94void native_restore_msi_irqs(struct pci_dev *dev);
95#else
96#define native_setup_msi_irqs NULL
97#define native_teardown_msi_irq NULL
98#endif
99
100#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
101
102#endif /* __KERNEL__ */
103
104#ifdef CONFIG_X86_64
105#include <asm/pci_64.h>
106#endif
107
108/* implement the pci_ DMA API in terms of the generic device dma_ one */
109#include <asm-generic/pci-dma-compat.h>
110
111/* generic pci stuff */
112#include <asm-generic/pci.h>
113
114#ifdef CONFIG_NUMA
115/* Returns the node based on pci bus */
116static inline int __pcibus_to_node(const struct pci_bus *bus)
117{
118 const struct pci_sysdata *sd = bus->sysdata;
119
120 return sd->node;
121}
122
123static inline const struct cpumask *
124cpumask_of_pcibus(const struct pci_bus *bus)
125{
126 int node;
127
128 node = __pcibus_to_node(bus);
129 return (node == -1) ? cpu_online_mask :
130 cpumask_of_node(node);
131}
132#endif
133
134struct pci_setup_rom {
135 struct setup_data data;
136 uint16_t vendor;
137 uint16_t devid;
138 uint64_t pcilen;
139 unsigned long segment;
140 unsigned long bus;
141 unsigned long device;
142 unsigned long function;
143 uint8_t romdata[0];
144};
145
146#endif /* _ASM_X86_PCI_H */