tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __x86_PCI_H
2#define __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 <asm/scatterlist.h>
9#include <asm/io.h>
10
11#ifdef __KERNEL__
12
13struct pci_sysdata {
14 int domain; /* PCI domain */
15 int node; /* NUMA node */
16#ifdef CONFIG_X86_64
17 void *iommu; /* IOMMU private data */
18#endif
19};
20
21extern int pci_routeirq;
22
23/* scan a bus after allocating a pci_sysdata for it */
24extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
25 int node);
26extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
27
28static inline int pci_domain_nr(struct pci_bus *bus)
29{
30 struct pci_sysdata *sd = bus->sysdata;
31 return sd->domain;
32}
33
34static inline int pci_proc_domain(struct pci_bus *bus)
35{
36 return pci_domain_nr(bus);
37}
38
39
40/* Can be used to override the logic in pci_scan_bus for skipping
41 already-configured bus numbers - to be used for buggy BIOSes
42 or architectures with incomplete PCI setup by the loader */
43
44#ifdef CONFIG_PCI
45extern unsigned int pcibios_assign_all_busses(void);
46#else
47#define pcibios_assign_all_busses() 0
48#endif
49#define pcibios_scan_all_fns(a, b) 0
50
51extern unsigned long pci_mem_start;
52#define PCIBIOS_MIN_IO 0x1000
53#define PCIBIOS_MIN_MEM (pci_mem_start)
54
55#define PCIBIOS_MIN_CARDBUS_IO 0x4000
56
57void pcibios_config_init(void);
58struct pci_bus *pcibios_scan_root(int bus);
59
60void pcibios_set_master(struct pci_dev *dev);
61void pcibios_penalize_isa_irq(int irq, int active);
62struct irq_routing_table *pcibios_get_irq_routing_table(void);
63int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
64
65
66#define HAVE_PCI_MMAP
67extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
68 enum pci_mmap_state mmap_state,
69 int write_combine);
70
71
72#ifdef CONFIG_PCI
73extern void early_quirks(void);
74static inline void pci_dma_burst_advice(struct pci_dev *pdev,
75 enum pci_dma_burst_strategy *strat,
76 unsigned long *strategy_parameter)
77{
78 *strat = PCI_DMA_BURST_INFINITY;
79 *strategy_parameter = ~0UL;
80}
81#else
82static inline void early_quirks(void) { }
83#endif
84
85#endif /* __KERNEL__ */
86
87#ifdef CONFIG_X86_32
88# include "pci_32.h"
89#else
90# include "pci_64.h"
91#endif
92
93/* implement the pci_ DMA API in terms of the generic device dma_ one */
94#include <asm-generic/pci-dma-compat.h>
95
96/* generic pci stuff */
97#include <asm-generic/pci.h>
98
99#ifdef CONFIG_NUMA
100/* Returns the node based on pci bus */
101static inline int __pcibus_to_node(struct pci_bus *bus)
102{
103 struct pci_sysdata *sd = bus->sysdata;
104
105 return sd->node;
106}
107
108static inline cpumask_t __pcibus_to_cpumask(struct pci_bus *bus)
109{
110 return node_to_cpumask(__pcibus_to_node(bus));
111}
112#endif
113
114#endif