1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_PCI_H |
3 | #define _ASM_X86_PCI_H |
4 | |
5 | #include <linux/mm.h> /* for struct page */ |
6 | #include <linux/types.h> |
7 | #include <linux/slab.h> |
8 | #include <linux/string.h> |
9 | #include <linux/scatterlist.h> |
10 | #include <linux/numa.h> |
11 | #include <asm/io.h> |
12 | #include <asm/memtype.h> |
13 | #include <asm/x86_init.h> |
14 | |
15 | struct pci_sysdata { |
16 | int domain; /* PCI domain */ |
17 | int node; /* NUMA node */ |
18 | #ifdef CONFIG_ACPI |
19 | struct acpi_device *companion; /* ACPI companion device */ |
20 | #endif |
21 | #ifdef CONFIG_X86_64 |
22 | void *iommu; /* IOMMU private data */ |
23 | #endif |
24 | #ifdef CONFIG_PCI_MSI |
25 | void *fwnode; /* IRQ domain for MSI assignment */ |
26 | #endif |
27 | #if IS_ENABLED(CONFIG_VMD) |
28 | struct pci_dev *vmd_dev; /* VMD Device if in Intel VMD domain */ |
29 | #endif |
30 | }; |
31 | |
32 | extern int pci_routeirq; |
33 | extern int noioapicquirk; |
34 | extern int noioapicreroute; |
35 | |
36 | static inline struct pci_sysdata *to_pci_sysdata(const struct pci_bus *bus) |
37 | { |
38 | return bus->sysdata; |
39 | } |
40 | |
41 | #ifdef CONFIG_PCI |
42 | |
43 | #ifdef CONFIG_PCI_DOMAINS |
44 | static inline int pci_domain_nr(struct pci_bus *bus) |
45 | { |
46 | return to_pci_sysdata(bus)->domain; |
47 | } |
48 | |
49 | static inline int pci_proc_domain(struct pci_bus *bus) |
50 | { |
51 | return pci_domain_nr(bus); |
52 | } |
53 | #endif |
54 | |
55 | #ifdef CONFIG_PCI_MSI |
56 | static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) |
57 | { |
58 | return to_pci_sysdata(bus)->fwnode; |
59 | } |
60 | |
61 | #define pci_root_bus_fwnode _pci_root_bus_fwnode |
62 | #endif |
63 | |
64 | #if IS_ENABLED(CONFIG_VMD) |
65 | static inline bool is_vmd(struct pci_bus *bus) |
66 | { |
67 | return to_pci_sysdata(bus)->vmd_dev != NULL; |
68 | } |
69 | #else |
70 | #define is_vmd(bus) false |
71 | #endif /* CONFIG_VMD */ |
72 | |
73 | /* Can be used to override the logic in pci_scan_bus for skipping |
74 | already-configured bus numbers - to be used for buggy BIOSes |
75 | or architectures with incomplete PCI setup by the loader */ |
76 | |
77 | extern unsigned int pcibios_assign_all_busses(void); |
78 | extern int pci_legacy_init(void); |
79 | #else |
80 | static inline int pcibios_assign_all_busses(void) { return 0; } |
81 | #endif |
82 | |
83 | extern unsigned long pci_mem_start; |
84 | #define PCIBIOS_MIN_IO 0x1000 |
85 | #define PCIBIOS_MIN_MEM (pci_mem_start) |
86 | |
87 | #define PCIBIOS_MIN_CARDBUS_IO 0x4000 |
88 | |
89 | extern int pcibios_enabled; |
90 | void pcibios_scan_root(int bus); |
91 | |
92 | struct irq_routing_table *pcibios_get_irq_routing_table(void); |
93 | int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); |
94 | |
95 | bool pci_dev_has_default_msi_parent_domain(struct pci_dev *dev); |
96 | |
97 | #define HAVE_PCI_MMAP |
98 | #define arch_can_pci_mmap_wc() pat_enabled() |
99 | #define ARCH_GENERIC_PCI_MMAP_RESOURCE |
100 | |
101 | #ifdef CONFIG_PCI |
102 | extern void early_quirks(void); |
103 | #else |
104 | static inline void early_quirks(void) { } |
105 | #endif |
106 | |
107 | extern void pci_iommu_alloc(void); |
108 | |
109 | #ifdef CONFIG_NUMA |
110 | /* Returns the node based on pci bus */ |
111 | static inline int __pcibus_to_node(const struct pci_bus *bus) |
112 | { |
113 | return to_pci_sysdata(bus)->node; |
114 | } |
115 | |
116 | static inline const struct cpumask * |
117 | cpumask_of_pcibus(const struct pci_bus *bus) |
118 | { |
119 | int node; |
120 | |
121 | node = __pcibus_to_node(bus); |
122 | return (node == NUMA_NO_NODE) ? cpu_online_mask : |
123 | cpumask_of_node(node); |
124 | } |
125 | #endif |
126 | |
127 | struct pci_setup_rom { |
128 | struct setup_data data; |
129 | uint16_t vendor; |
130 | uint16_t devid; |
131 | uint64_t pcilen; |
132 | unsigned long segment; |
133 | unsigned long bus; |
134 | unsigned long device; |
135 | unsigned long function; |
136 | uint8_t romdata[]; |
137 | }; |
138 | |
139 | #endif /* _ASM_X86_PCI_H */ |
140 | |