summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/pci.h
blob: 947b5c417e830ae0ead192964ef07f8a68d88851 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
#ifndef _ASM_X86_PCI_H
#define _ASM_X86_PCI_H

#include <linux/mm.h> /* for struct page */
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
#include <asm/x86_init.h>

#ifdef __KERNEL__

struct pci_sysdata {
	int		domain;		/* PCI domain */
	int		node;		/* NUMA node */
#ifdef CONFIG_ACPI
	struct acpi_device *companion;	/* ACPI companion device */
#endif
#ifdef CONFIG_X86_64
	void		*iommu;		/* IOMMU private data */
#endif
};

extern int pci_routeirq;
extern int noioapicquirk;
extern int noioapicreroute;

/* scan a bus after allocating a pci_sysdata for it */
extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
					    int node);
extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);

#ifdef CONFIG_PCI

#ifdef CONFIG_PCI_DOMAINS
static inline int pci_domain_nr(struct pci_bus *bus)
{
	struct pci_sysdata *sd = bus->sysdata;
	return sd->domain;
}

static inline int pci_proc_domain(struct pci_bus *bus)
{
	return pci_domain_nr(bus);
}
#endif

/* Can be used to override the logic in pci_scan_bus for skipping
   already-configured bus numbers - to be used for buggy BIOSes
   or architectures with incomplete PCI setup by the loader */

extern unsigned int pcibios_assign_all_busses(void);
extern int pci_legacy_init(void);
# ifdef CONFIG_ACPI
#  define x86_default_pci_init pci_acpi_init
# else
#  define x86_default_pci_init pci_legacy_init
# endif
#else
# define pcibios_assign_all_busses()	0
# define x86_default_pci_init		NULL
#endif

extern unsigned long pci_mem_start;
#define PCIBIOS_MIN_IO		0x1000
#define PCIBIOS_MIN_MEM		(pci_mem_start)

#define PCIBIOS_MIN_CARDBUS_IO	0x4000

extern int pcibios_enabled;
void pcibios_config_init(void);
struct pci_bus *pcibios_scan_root(int bus);

void pcibios_set_master(struct pci_dev *dev);
void pcibios_penalize_isa_irq(int irq, int active);
struct irq_routing_table *pcibios_get_irq_routing_table(void);
int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);


#define HAVE_PCI_MMAP
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
			       enum pci_mmap_state mmap_state,
			       int write_combine);


#ifdef CONFIG_PCI
extern void early_quirks(void);
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
					enum pci_dma_burst_strategy *strat,
					unsigned long *strategy_parameter)
{
	*strat = PCI_DMA_BURST_INFINITY;
	*strategy_parameter = ~0UL;
}
#else
static inline void early_quirks(void) { }
#endif

extern void pci_iommu_alloc(void);

#ifdef CONFIG_PCI_MSI
/* implemented in arch/x86/kernel/apic/io_apic. */
struct msi_desc;
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void native_teardown_msi_irq(unsigned int irq);
void native_restore_msi_irqs(struct pci_dev *dev, int irq);
int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
		  unsigned int irq_base, unsigned int irq_offset);
#else
#define native_setup_msi_irqs		NULL
#define native_teardown_msi_irq		NULL
#endif

#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)

#endif  /* __KERNEL__ */

#ifdef CONFIG_X86_64
#include <asm/pci_64.h>
#endif

/* implement the pci_ DMA API in terms of the generic device dma_ one */
#include <asm-generic/pci-dma-compat.h>

/* generic pci stuff */
#include <asm-generic/pci.h>
#define PCIBIOS_MAX_MEM_32 0xffffffff

#ifdef CONFIG_NUMA
/* Returns the node based on pci bus */
static inline int __pcibus_to_node(const struct pci_bus *bus)
{
	const struct pci_sysdata *sd = bus->sysdata;

	return sd->node;
}

static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus *bus)
{
	int node;

	node = __pcibus_to_node(bus);
	return (node == -1) ? cpu_online_mask :
			      cpumask_of_node(node);
}
#endif

struct pci_setup_rom {
	struct setup_data data;
	uint16_t vendor;
	uint16_t devid;
	uint64_t pcilen;
	unsigned long segment;
	unsigned long bus;
	unsigned long device;
	unsigned long function;
	uint8_t romdata[0];
};

#endif /* _ASM_X86_PCI_H */