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 <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;
22extern int noioapicquirk;
23extern int noioapicreroute;
24
25/* scan a bus after allocating a pci_sysdata for it */
26extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
27 int node);
28extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
29
30#ifdef CONFIG_PCI
31
32#ifdef CONFIG_PCI_DOMAINS
33static inline int pci_domain_nr(struct pci_bus *bus)
34{
35 struct pci_sysdata *sd = bus->sysdata;
36 return sd->domain;
37}
38
39static inline int pci_proc_domain(struct pci_bus *bus)
40{
41 return pci_domain_nr(bus);
42}
43#endif
44
45/* Can be used to override the logic in pci_scan_bus for skipping
46 already-configured bus numbers - to be used for buggy BIOSes
47 or architectures with incomplete PCI setup by the loader */
48
49extern unsigned int pcibios_assign_all_busses(void);
50extern int pci_legacy_init(void);
51# ifdef CONFIG_ACPI
52# define x86_default_pci_init pci_acpi_init
53# else
54# define x86_default_pci_init pci_legacy_init
55# endif
56#else
57# define pcibios_assign_all_busses() 0
58# define x86_default_pci_init NULL
59#endif
60
61extern unsigned long pci_mem_start;
62#define PCIBIOS_MIN_IO 0x1000
63#define PCIBIOS_MIN_MEM (pci_mem_start)
64
65#define PCIBIOS_MIN_CARDBUS_IO 0x4000
66
67void pcibios_config_init(void);
68struct pci_bus *pcibios_scan_root(int bus);
69
70void pcibios_set_master(struct pci_dev *dev);
71void pcibios_penalize_isa_irq(int irq, int active);
72struct irq_routing_table *pcibios_get_irq_routing_table(void);
73int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
74
75
76#define HAVE_PCI_MMAP
77extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
78 enum pci_mmap_state mmap_state,
79 int write_combine);
80
81
82#ifdef CONFIG_PCI
83extern void early_quirks(void);
84static inline void pci_dma_burst_advice(struct pci_dev *pdev,
85 enum pci_dma_burst_strategy *strat,
86 unsigned long *strategy_parameter)
87{
88 *strat = PCI_DMA_BURST_INFINITY;
89 *strategy_parameter = ~0UL;
90}
91#else
92static inline void early_quirks(void) { }
93#endif
94
95extern void pci_iommu_alloc(void);
96
97/* MSI arch hook */
98#define arch_setup_msi_irqs arch_setup_msi_irqs
99
100#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
101
102#endif /* __KERNEL__ */
103
104#ifdef CONFIG_X86_64
105#include "pci_64.h"
106#endif
107
108void dma32_reserve_bootmem(void);
109
110/* implement the pci_ DMA API in terms of the generic device dma_ one */
111#include <asm-generic/pci-dma-compat.h>
112
113/* generic pci stuff */
114#include <asm-generic/pci.h>
115#define PCIBIOS_MAX_MEM_32 0xffffffff
116
117#ifdef CONFIG_NUMA
118/* Returns the node based on pci bus */
119static inline int __pcibus_to_node(const struct pci_bus *bus)
120{
121 const struct pci_sysdata *sd = bus->sysdata;
122
123 return sd->node;
124}
125
126static inline const struct cpumask *
127cpumask_of_pcibus(const struct pci_bus *bus)
128{
129 int node;
130
131 node = __pcibus_to_node(bus);
132 return (node == -1) ? cpu_online_mask :
133 cpumask_of_node(node);
134}
135#endif
136
137#endif /* _ASM_X86_PCI_H */