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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1965aae3 PA |
2 | #ifndef _ASM_X86_PCI_H |
3 | #define _ASM_X86_PCI_H | |
f3e6f164 GKH |
4 | |
5 | #include <linux/mm.h> /* for struct page */ | |
6 | #include <linux/types.h> | |
7 | #include <linux/slab.h> | |
8 | #include <linux/string.h> | |
84be456f | 9 | #include <linux/scatterlist.h> |
98fa15f3 | 10 | #include <linux/numa.h> |
f3e6f164 | 11 | #include <asm/io.h> |
eb243d1d | 12 | #include <asm/memtype.h> |
294ee6f8 | 13 | #include <asm/x86_init.h> |
f3e6f164 | 14 | |
f3e6f164 GKH |
15 | struct pci_sysdata { |
16 | int domain; /* PCI domain */ | |
17 | int node; /* NUMA node */ | |
6c0cc950 | 18 | #ifdef CONFIG_ACPI |
7b199811 | 19 | struct acpi_device *companion; /* ACPI companion device */ |
6c0cc950 | 20 | #endif |
f3e6f164 | 21 | #ifdef CONFIG_X86_64 |
69bdb7bc | 22 | void *iommu; /* IOMMU private data */ |
f3e6f164 | 23 | #endif |
92016ba5 JO |
24 | #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN |
25 | void *fwnode; /* IRQ domain for MSI assignment */ | |
26 | #endif | |
3161832d | 27 | #if IS_ENABLED(CONFIG_VMD) |
34067c56 | 28 | struct pci_dev *vmd_dev; /* VMD Device if in Intel VMD domain */ |
3161832d | 29 | #endif |
f3e6f164 GKH |
30 | }; |
31 | ||
07156509 | 32 | extern int pci_routeirq; |
a9322f64 | 33 | extern int noioapicquirk; |
41b9eb26 | 34 | extern int noioapicreroute; |
07156509 | 35 | |
aad6aa0c CH |
36 | static inline struct pci_sysdata *to_pci_sysdata(const struct pci_bus *bus) |
37 | { | |
38 | return bus->sysdata; | |
39 | } | |
40 | ||
b9303bb1 JD |
41 | #ifdef CONFIG_PCI |
42 | ||
23b90cfd | 43 | #ifdef CONFIG_PCI_DOMAINS |
f3e6f164 GKH |
44 | static inline int pci_domain_nr(struct pci_bus *bus) |
45 | { | |
aad6aa0c | 46 | return to_pci_sysdata(bus)->domain; |
f3e6f164 GKH |
47 | } |
48 | ||
49 | static inline int pci_proc_domain(struct pci_bus *bus) | |
50 | { | |
51 | return pci_domain_nr(bus); | |
52 | } | |
23b90cfd | 53 | #endif |
f3e6f164 | 54 | |
92016ba5 JO |
55 | #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN |
56 | static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) | |
57 | { | |
aad6aa0c | 58 | return to_pci_sysdata(bus)->fwnode; |
92016ba5 JO |
59 | } |
60 | ||
61 | #define pci_root_bus_fwnode _pci_root_bus_fwnode | |
62 | #endif | |
63 | ||
aad6aa0c | 64 | #if IS_ENABLED(CONFIG_VMD) |
3161832d KB |
65 | static inline bool is_vmd(struct pci_bus *bus) |
66 | { | |
34067c56 | 67 | return to_pci_sysdata(bus)->vmd_dev != NULL; |
3161832d | 68 | } |
aad6aa0c CH |
69 | #else |
70 | #define is_vmd(bus) false | |
71 | #endif /* CONFIG_VMD */ | |
3161832d | 72 | |
f3e6f164 GKH |
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 | ||
f3e6f164 | 77 | extern unsigned int pcibios_assign_all_busses(void); |
b72d0db9 | 78 | extern int pci_legacy_init(void); |
f3e6f164 | 79 | #else |
9304d162 | 80 | static inline int pcibios_assign_all_busses(void) { return 0; } |
f3e6f164 | 81 | #endif |
f3e6f164 GKH |
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 | ||
5bd5a452 | 89 | extern int pcibios_enabled; |
49886cf4 | 90 | void pcibios_scan_root(int bus); |
f3e6f164 | 91 | |
f3e6f164 GKH |
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 | ||
96 | #define HAVE_PCI_MMAP | |
ae749c7a | 97 | #define arch_can_pci_mmap_wc() pat_enabled() |
5c2d5ce2 | 98 | #define ARCH_GENERIC_PCI_MMAP_RESOURCE |
f3e6f164 GKH |
99 | |
100 | #ifdef CONFIG_PCI | |
376ff035 | 101 | extern void early_quirks(void); |
376ff035 TG |
102 | #else |
103 | static inline void early_quirks(void) { } | |
f3e6f164 GKH |
104 | #endif |
105 | ||
cfb80c9e JF |
106 | extern void pci_iommu_alloc(void); |
107 | ||
f3e6f164 GKH |
108 | /* generic pci stuff */ |
109 | #include <asm-generic/pci.h> | |
110 | ||
b4ea9299 TG |
111 | #ifdef CONFIG_NUMA |
112 | /* Returns the node based on pci bus */ | |
393d68fb | 113 | static inline int __pcibus_to_node(const struct pci_bus *bus) |
b4ea9299 | 114 | { |
aad6aa0c | 115 | return to_pci_sysdata(bus)->node; |
b4ea9299 | 116 | } |
f3e6f164 | 117 | |
393d68fb RR |
118 | static inline const struct cpumask * |
119 | cpumask_of_pcibus(const struct pci_bus *bus) | |
120 | { | |
7715a1e8 DR |
121 | int node; |
122 | ||
123 | node = __pcibus_to_node(bus); | |
98fa15f3 | 124 | return (node == NUMA_NO_NODE) ? cpu_online_mask : |
7715a1e8 | 125 | cpumask_of_node(node); |
393d68fb | 126 | } |
b4ea9299 | 127 | #endif |
f3e6f164 | 128 | |
dd5fc854 MG |
129 | struct pci_setup_rom { |
130 | struct setup_data data; | |
131 | uint16_t vendor; | |
132 | uint16_t devid; | |
133 | uint64_t pcilen; | |
134 | unsigned long segment; | |
135 | unsigned long bus; | |
136 | unsigned long device; | |
137 | unsigned long function; | |
138 | uint8_t romdata[0]; | |
139 | }; | |
140 | ||
1965aae3 | 141 | #endif /* _ASM_X86_PCI_H */ |