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