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_ACPI
18 void *acpi; /* ACPI-specific data */
19 #endif
20 #ifdef CONFIG_X86_64
21 void *iommu; /* IOMMU private data */
22 #endif
23 };
24
25 extern int pci_routeirq;
26 extern int noioapicquirk;
27 extern int noioapicreroute;
28
29 /* scan a bus after allocating a pci_sysdata for it */
30 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
31 int node);
32 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
33
34 #ifdef CONFIG_PCI
35
36 #ifdef CONFIG_PCI_DOMAINS
pci_domain_nr(struct pci_bus * bus)37 static inline int pci_domain_nr(struct pci_bus *bus)
38 {
39 struct pci_sysdata *sd = bus->sysdata;
40 return sd->domain;
41 }
42
pci_proc_domain(struct pci_bus * bus)43 static inline int pci_proc_domain(struct pci_bus *bus)
44 {
45 return pci_domain_nr(bus);
46 }
47 #endif
48
49 /* Can be used to override the logic in pci_scan_bus for skipping
50 already-configured bus numbers - to be used for buggy BIOSes
51 or architectures with incomplete PCI setup by the loader */
52
53 extern unsigned int pcibios_assign_all_busses(void);
54 extern int pci_legacy_init(void);
55 # ifdef CONFIG_ACPI
56 # define x86_default_pci_init pci_acpi_init
57 # else
58 # define x86_default_pci_init pci_legacy_init
59 # endif
60 #else
61 # define pcibios_assign_all_busses() 0
62 # define x86_default_pci_init NULL
63 #endif
64
65 extern unsigned long pci_mem_start;
66 #define PCIBIOS_MIN_IO 0x1000
67 #define PCIBIOS_MIN_MEM (pci_mem_start)
68
69 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
70
71 extern int pcibios_enabled;
72 void pcibios_config_init(void);
73 struct pci_bus *pcibios_scan_root(int bus);
74
75 void pcibios_set_master(struct pci_dev *dev);
76 void pcibios_penalize_isa_irq(int irq, int active);
77 struct irq_routing_table *pcibios_get_irq_routing_table(void);
78 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
79
80
81 #define HAVE_PCI_MMAP
82 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
83 enum pci_mmap_state mmap_state,
84 int write_combine);
85
86
87 #ifdef CONFIG_PCI
88 extern void early_quirks(void);
pci_dma_burst_advice(struct pci_dev * pdev,enum pci_dma_burst_strategy * strat,unsigned long * strategy_parameter)89 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
90 enum pci_dma_burst_strategy *strat,
91 unsigned long *strategy_parameter)
92 {
93 *strat = PCI_DMA_BURST_INFINITY;
94 *strategy_parameter = ~0UL;
95 }
96 #else
early_quirks(void)97 static inline void early_quirks(void) { }
98 #endif
99
100 extern void pci_iommu_alloc(void);
101
102 #ifdef CONFIG_PCI_MSI
103 /* MSI arch specific hooks */
x86_setup_msi_irqs(struct pci_dev * dev,int nvec,int type)104 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
105 {
106 return x86_msi.setup_msi_irqs(dev, nvec, type);
107 }
108
x86_teardown_msi_irqs(struct pci_dev * dev)109 static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
110 {
111 x86_msi.teardown_msi_irqs(dev);
112 }
113
x86_teardown_msi_irq(unsigned int irq)114 static inline void x86_teardown_msi_irq(unsigned int irq)
115 {
116 x86_msi.teardown_msi_irq(irq);
117 }
x86_restore_msi_irqs(struct pci_dev * dev,int irq)118 static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
119 {
120 x86_msi.restore_msi_irqs(dev, irq);
121 }
122 #define arch_setup_msi_irqs x86_setup_msi_irqs
123 #define arch_teardown_msi_irqs x86_teardown_msi_irqs
124 #define arch_teardown_msi_irq x86_teardown_msi_irq
125 #define arch_restore_msi_irqs x86_restore_msi_irqs
126 /* implemented in arch/x86/kernel/apic/io_apic. */
127 struct msi_desc;
128 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
129 void native_teardown_msi_irq(unsigned int irq);
130 void native_restore_msi_irqs(struct pci_dev *dev, int irq);
131 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
132 unsigned int irq_base, unsigned int irq_offset);
133 /* default to the implementation in drivers/lib/msi.c */
134 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
135 #define HAVE_DEFAULT_MSI_RESTORE_IRQS
136 void default_teardown_msi_irqs(struct pci_dev *dev);
137 void default_restore_msi_irqs(struct pci_dev *dev, int irq);
138 #else
139 #define native_setup_msi_irqs NULL
140 #define native_teardown_msi_irq NULL
141 #define default_teardown_msi_irqs NULL
142 #define default_restore_msi_irqs NULL
143 #endif
144
145 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
146
147 #endif /* __KERNEL__ */
148
149 #ifdef CONFIG_X86_64
150 #include <asm/pci_64.h>
151 #endif
152
153 /* implement the pci_ DMA API in terms of the generic device dma_ one */
154 #include <asm-generic/pci-dma-compat.h>
155
156 /* generic pci stuff */
157 #include <asm-generic/pci.h>
158 #define PCIBIOS_MAX_MEM_32 0xffffffff
159
160 #ifdef CONFIG_NUMA
161 /* Returns the node based on pci bus */
__pcibus_to_node(const struct pci_bus * bus)162 static inline int __pcibus_to_node(const struct pci_bus *bus)
163 {
164 const struct pci_sysdata *sd = bus->sysdata;
165
166 return sd->node;
167 }
168
169 static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus * bus)170 cpumask_of_pcibus(const struct pci_bus *bus)
171 {
172 int node;
173
174 node = __pcibus_to_node(bus);
175 return (node == -1) ? cpu_online_mask :
176 cpumask_of_node(node);
177 }
178 #endif
179
180 struct pci_setup_rom {
181 struct setup_data data;
182 uint16_t vendor;
183 uint16_t devid;
184 uint64_t pcilen;
185 unsigned long segment;
186 unsigned long bus;
187 unsigned long device;
188 unsigned long function;
189 uint8_t romdata[0];
190 };
191
192 #endif /* _ASM_X86_PCI_H */
193