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
14 struct 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 extern int pci_routeirq;
23 extern int noioapicquirk;
24 extern int noioapicreroute;
25
26 /* scan a bus after allocating a pci_sysdata for it */
27 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
28 int node);
29 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
30
31 #ifdef CONFIG_PCI
32
33 #ifdef CONFIG_PCI_DOMAINS
pci_domain_nr(struct pci_bus * bus)34 static inline int pci_domain_nr(struct pci_bus *bus)
35 {
36 struct pci_sysdata *sd = bus->sysdata;
37 return sd->domain;
38 }
39
pci_proc_domain(struct pci_bus * bus)40 static inline int pci_proc_domain(struct pci_bus *bus)
41 {
42 return pci_domain_nr(bus);
43 }
44 #endif
45
46 /* Can be used to override the logic in pci_scan_bus for skipping
47 already-configured bus numbers - to be used for buggy BIOSes
48 or architectures with incomplete PCI setup by the loader */
49
50 extern unsigned int pcibios_assign_all_busses(void);
51 extern int pci_legacy_init(void);
52 # ifdef CONFIG_ACPI
53 # define x86_default_pci_init pci_acpi_init
54 # else
55 # define x86_default_pci_init pci_legacy_init
56 # endif
57 #else
58 # define pcibios_assign_all_busses() 0
59 # define x86_default_pci_init NULL
60 #endif
61
62 extern unsigned long pci_mem_start;
63 #define PCIBIOS_MIN_IO 0x1000
64 #define PCIBIOS_MIN_MEM (pci_mem_start)
65
66 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
67
68 extern int pcibios_enabled;
69 void pcibios_config_init(void);
70 struct pci_bus *pcibios_scan_root(int bus);
71
72 void pcibios_set_master(struct pci_dev *dev);
73 void pcibios_penalize_isa_irq(int irq, int active);
74 struct irq_routing_table *pcibios_get_irq_routing_table(void);
75 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
76
77
78 #define HAVE_PCI_MMAP
79 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
80 enum pci_mmap_state mmap_state,
81 int write_combine);
82
83
84 #ifdef CONFIG_PCI
85 extern void early_quirks(void);
pci_dma_burst_advice(struct pci_dev * pdev,enum pci_dma_burst_strategy * strat,unsigned long * strategy_parameter)86 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
87 enum pci_dma_burst_strategy *strat,
88 unsigned long *strategy_parameter)
89 {
90 *strat = PCI_DMA_BURST_INFINITY;
91 *strategy_parameter = ~0UL;
92 }
93 #else
early_quirks(void)94 static inline void early_quirks(void) { }
95 #endif
96
97 extern void pci_iommu_alloc(void);
98
99 #ifdef CONFIG_PCI_MSI
100 /* MSI arch specific hooks */
x86_setup_msi_irqs(struct pci_dev * dev,int nvec,int type)101 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
102 {
103 return x86_msi.setup_msi_irqs(dev, nvec, type);
104 }
105
x86_teardown_msi_irqs(struct pci_dev * dev)106 static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
107 {
108 x86_msi.teardown_msi_irqs(dev);
109 }
110
x86_teardown_msi_irq(unsigned int irq)111 static inline void x86_teardown_msi_irq(unsigned int irq)
112 {
113 x86_msi.teardown_msi_irq(irq);
114 }
x86_restore_msi_irqs(struct pci_dev * dev,int irq)115 static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
116 {
117 x86_msi.restore_msi_irqs(dev, irq);
118 }
119 #define arch_setup_msi_irqs x86_setup_msi_irqs
120 #define arch_teardown_msi_irqs x86_teardown_msi_irqs
121 #define arch_teardown_msi_irq x86_teardown_msi_irq
122 #define arch_restore_msi_irqs x86_restore_msi_irqs
123 /* implemented in arch/x86/kernel/apic/io_apic. */
124 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
125 void native_teardown_msi_irq(unsigned int irq);
126 void native_restore_msi_irqs(struct pci_dev *dev, int irq);
127 /* default to the implementation in drivers/lib/msi.c */
128 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
129 #define HAVE_DEFAULT_MSI_RESTORE_IRQS
130 void default_teardown_msi_irqs(struct pci_dev *dev);
131 void default_restore_msi_irqs(struct pci_dev *dev, int irq);
132 #else
133 #define native_setup_msi_irqs NULL
134 #define native_teardown_msi_irq NULL
135 #define default_teardown_msi_irqs NULL
136 #define default_restore_msi_irqs NULL
137 #endif
138
139 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
140
141 #endif /* __KERNEL__ */
142
143 #ifdef CONFIG_X86_64
144 #include "pci_64.h"
145 #endif
146
147 /* implement the pci_ DMA API in terms of the generic device dma_ one */
148 #include <asm-generic/pci-dma-compat.h>
149
150 /* generic pci stuff */
151 #include <asm-generic/pci.h>
152 #define PCIBIOS_MAX_MEM_32 0xffffffff
153
154 #ifdef CONFIG_NUMA
155 /* Returns the node based on pci bus */
__pcibus_to_node(const struct pci_bus * bus)156 static inline int __pcibus_to_node(const struct pci_bus *bus)
157 {
158 const struct pci_sysdata *sd = bus->sysdata;
159
160 return sd->node;
161 }
162
163 static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus * bus)164 cpumask_of_pcibus(const struct pci_bus *bus)
165 {
166 int node;
167
168 node = __pcibus_to_node(bus);
169 return (node == -1) ? cpu_online_mask :
170 cpumask_of_node(node);
171 }
172 #endif
173
174 #endif /* _ASM_X86_PCI_H */
175