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
13 struct 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 extern int pci_routeirq;
22 extern int noioapicquirk;
23 extern int noioapicreroute;
24
25 /* scan a bus after allocating a pci_sysdata for it */
26 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
27 int node);
28 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
29
30 static inline int pci_domain_nr(struct pci_bus *bus)
31 {
32 struct pci_sysdata *sd = bus->sysdata;
33 return sd->domain;
34 }
35
36 static inline int pci_proc_domain(struct pci_bus *bus)
37 {
38 return pci_domain_nr(bus);
39 }
40
41
42 /* Can be used to override the logic in pci_scan_bus for skipping
43 already-configured bus numbers - to be used for buggy BIOSes
44 or architectures with incomplete PCI setup by the loader */
45
46 #ifdef CONFIG_PCI
47 extern unsigned int pcibios_assign_all_busses(void);
48 #else
49 #define pcibios_assign_all_busses() 0
50 #endif
51 #define pcibios_scan_all_fns(a, b) 0
52
53 extern unsigned long pci_mem_start;
54 #define PCIBIOS_MIN_IO 0x1000
55 #define PCIBIOS_MIN_MEM (pci_mem_start)
56
57 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
58
59 void pcibios_config_init(void);
60 struct pci_bus *pcibios_scan_root(int bus);
61
62 void pcibios_set_master(struct pci_dev *dev);
63 void pcibios_penalize_isa_irq(int irq, int active);
64 struct irq_routing_table *pcibios_get_irq_routing_table(void);
65 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
66
67
68 #define HAVE_PCI_MMAP
69 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
70 enum pci_mmap_state mmap_state,
71 int write_combine);
72
73
74 #ifdef CONFIG_PCI
75 extern void early_quirks(void);
76 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
77 enum pci_dma_burst_strategy *strat,
78 unsigned long *strategy_parameter)
79 {
80 *strat = PCI_DMA_BURST_INFINITY;
81 *strategy_parameter = ~0UL;
82 }
83 #else
84 static inline void early_quirks(void) { }
85 #endif
86
87 extern void pci_iommu_alloc(void);
88
89 /* MSI arch hook */
90 #define arch_setup_msi_irqs arch_setup_msi_irqs
91
92 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
93
94 #if defined(CONFIG_X86_64) || defined(CONFIG_DMAR) || defined(CONFIG_DMA_API_DEBUG)
95
96 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
97 dma_addr_t ADDR_NAME;
98 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
99 __u32 LEN_NAME;
100 #define pci_unmap_addr(PTR, ADDR_NAME) \
101 ((PTR)->ADDR_NAME)
102 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
103 (((PTR)->ADDR_NAME) = (VAL))
104 #define pci_unmap_len(PTR, LEN_NAME) \
105 ((PTR)->LEN_NAME)
106 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
107 (((PTR)->LEN_NAME) = (VAL))
108
109 #else
110
111 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME[0];
112 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) unsigned LEN_NAME[0];
113 #define pci_unmap_addr(PTR, ADDR_NAME) sizeof((PTR)->ADDR_NAME)
114 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
115 do { break; } while (pci_unmap_addr(PTR, ADDR_NAME))
116 #define pci_unmap_len(PTR, LEN_NAME) sizeof((PTR)->LEN_NAME)
117 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
118 do { break; } while (pci_unmap_len(PTR, LEN_NAME))
119
120 #endif
121
122 #endif /* __KERNEL__ */
123
124 #ifdef CONFIG_X86_64
125 #include "pci_64.h"
126 #endif
127
128 /* implement the pci_ DMA API in terms of the generic device dma_ one */
129 #include <asm-generic/pci-dma-compat.h>
130
131 /* generic pci stuff */
132 #include <asm-generic/pci.h>
133 #define PCIBIOS_MAX_MEM_32 0xffffffff
134
135 #ifdef CONFIG_NUMA
136 /* Returns the node based on pci bus */
137 static inline int __pcibus_to_node(const struct pci_bus *bus)
138 {
139 const struct pci_sysdata *sd = bus->sysdata;
140
141 return sd->node;
142 }
143
144 static inline const struct cpumask *
145 cpumask_of_pcibus(const struct pci_bus *bus)
146 {
147 return cpumask_of_node(__pcibus_to_node(bus));
148 }
149 #endif
150
151 #endif /* _ASM_X86_PCI_H */
152
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