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