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#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);
83static inline void pci_dma_burst_advice(struct pci_dev *pdev,
84					enum pci_dma_burst_strategy *strat,
85					unsigned long *strategy_parameter)
86{
87	*strat = PCI_DMA_BURST_INFINITY;
88	*strategy_parameter = ~0UL;
89}
90#else
91static inline void early_quirks(void) { }
92#endif
93
94extern void pci_iommu_alloc(void);
95
96#ifdef CONFIG_PCI_MSI
97/* implemented in arch/x86/kernel/apic/io_apic. */
98struct msi_desc;
99void native_compose_msi_msg(struct pci_dev *pdev, unsigned int irq,
100			    unsigned int dest, struct msi_msg *msg, u8 hpet_id);
101int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
102void native_teardown_msi_irq(unsigned int irq);
103void native_restore_msi_irqs(struct pci_dev *dev);
104int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
105		  unsigned int irq_base, unsigned int irq_offset);
106#else
107#define native_compose_msi_msg		NULL
108#define native_setup_msi_irqs		NULL
109#define native_teardown_msi_irq		NULL
110#endif
111
112#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
113
114#endif  /* __KERNEL__ */
115
116#ifdef CONFIG_X86_64
117#include <asm/pci_64.h>
118#endif
119
120/* implement the pci_ DMA API in terms of the generic device dma_ one */
121#include <asm-generic/pci-dma-compat.h>
122
123/* generic pci stuff */
124#include <asm-generic/pci.h>
125
126#ifdef CONFIG_NUMA
127/* Returns the node based on pci bus */
128static inline int __pcibus_to_node(const struct pci_bus *bus)
129{
130	const struct pci_sysdata *sd = bus->sysdata;
131
132	return sd->node;
133}
134
135static inline const struct cpumask *
136cpumask_of_pcibus(const struct pci_bus *bus)
137{
138	int node;
139
140	node = __pcibus_to_node(bus);
141	return (node == -1) ? cpu_online_mask :
142			      cpumask_of_node(node);
143}
144#endif
145
146struct pci_setup_rom {
147	struct setup_data data;
148	uint16_t vendor;
149	uint16_t devid;
150	uint64_t pcilen;
151	unsigned long segment;
152	unsigned long bus;
153	unsigned long device;
154	unsigned long function;
155	uint8_t romdata[0];
156};
157
158#endif /* _ASM_X86_PCI_H */
159