]>
Commit | Line | Data |
---|---|---|
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> |
f3e6f164 | 10 | #include <asm/io.h> |
ae749c7a | 11 | #include <asm/pat.h> |
294ee6f8 | 12 | #include <asm/x86_init.h> |
f3e6f164 | 13 | |
f3e6f164 GKH |
14 | #ifdef __KERNEL__ |
15 | ||
16 | struct pci_sysdata { | |
17 | int domain; /* PCI domain */ | |
18 | int node; /* NUMA node */ | |
6c0cc950 | 19 | #ifdef CONFIG_ACPI |
7b199811 | 20 | struct acpi_device *companion; /* ACPI companion device */ |
6c0cc950 | 21 | #endif |
f3e6f164 | 22 | #ifdef CONFIG_X86_64 |
69bdb7bc | 23 | void *iommu; /* IOMMU private data */ |
f3e6f164 | 24 | #endif |
92016ba5 JO |
25 | #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN |
26 | void *fwnode; /* IRQ domain for MSI assignment */ | |
27 | #endif | |
3161832d KB |
28 | #if IS_ENABLED(CONFIG_VMD) |
29 | bool vmd_domain; /* True if in Intel VMD domain */ | |
30 | #endif | |
f3e6f164 GKH |
31 | }; |
32 | ||
07156509 | 33 | extern int pci_routeirq; |
a9322f64 | 34 | extern int noioapicquirk; |
41b9eb26 | 35 | extern int noioapicreroute; |
07156509 | 36 | |
23b90cfd JB |
37 | #ifdef CONFIG_PCI |
38 | ||
39 | #ifdef CONFIG_PCI_DOMAINS | |
f3e6f164 GKH |
40 | static inline int pci_domain_nr(struct pci_bus *bus) |
41 | { | |
42 | struct pci_sysdata *sd = bus->sysdata; | |
92016ba5 | 43 | |
f3e6f164 GKH |
44 | return sd->domain; |
45 | } | |
46 | ||
47 | static inline int pci_proc_domain(struct pci_bus *bus) | |
48 | { | |
49 | return pci_domain_nr(bus); | |
50 | } | |
23b90cfd | 51 | #endif |
f3e6f164 | 52 | |
92016ba5 JO |
53 | #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN |
54 | static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) | |
55 | { | |
56 | struct pci_sysdata *sd = bus->sysdata; | |
57 | ||
58 | return sd->fwnode; | |
59 | } | |
60 | ||
61 | #define pci_root_bus_fwnode _pci_root_bus_fwnode | |
62 | #endif | |
63 | ||
3161832d KB |
64 | static inline bool is_vmd(struct pci_bus *bus) |
65 | { | |
66 | #if IS_ENABLED(CONFIG_VMD) | |
67 | struct pci_sysdata *sd = bus->sysdata; | |
68 | ||
69 | return sd->vmd_domain; | |
70 | #else | |
71 | return false; | |
72 | #endif | |
73 | } | |
74 | ||
f3e6f164 GKH |
75 | /* Can be used to override the logic in pci_scan_bus for skipping |
76 | already-configured bus numbers - to be used for buggy BIOSes | |
77 | or architectures with incomplete PCI setup by the loader */ | |
78 | ||
f3e6f164 | 79 | extern unsigned int pcibios_assign_all_busses(void); |
b72d0db9 | 80 | extern int pci_legacy_init(void); |
f3e6f164 | 81 | #else |
9304d162 | 82 | static inline int pcibios_assign_all_busses(void) { return 0; } |
f3e6f164 | 83 | #endif |
f3e6f164 GKH |
84 | |
85 | extern unsigned long pci_mem_start; | |
86 | #define PCIBIOS_MIN_IO 0x1000 | |
87 | #define PCIBIOS_MIN_MEM (pci_mem_start) | |
88 | ||
89 | #define PCIBIOS_MIN_CARDBUS_IO 0x4000 | |
90 | ||
5bd5a452 | 91 | extern int pcibios_enabled; |
f3e6f164 | 92 | void pcibios_config_init(void); |
49886cf4 | 93 | void pcibios_scan_root(int bus); |
f3e6f164 GKH |
94 | |
95 | void pcibios_set_master(struct pci_dev *dev); | |
f3e6f164 GKH |
96 | struct irq_routing_table *pcibios_get_irq_routing_table(void); |
97 | int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); | |
98 | ||
99 | ||
100 | #define HAVE_PCI_MMAP | |
ae749c7a | 101 | #define arch_can_pci_mmap_wc() pat_enabled() |
5c2d5ce2 | 102 | #define ARCH_GENERIC_PCI_MMAP_RESOURCE |
f3e6f164 GKH |
103 | |
104 | #ifdef CONFIG_PCI | |
376ff035 | 105 | extern void early_quirks(void); |
376ff035 TG |
106 | #else |
107 | static inline void early_quirks(void) { } | |
f3e6f164 GKH |
108 | #endif |
109 | ||
cfb80c9e JF |
110 | extern void pci_iommu_alloc(void); |
111 | ||
294ee6f8 | 112 | #ifdef CONFIG_PCI_MSI |
294ee6f8 | 113 | /* implemented in arch/x86/kernel/apic/io_apic. */ |
5afba62c | 114 | struct msi_desc; |
294ee6f8 SS |
115 | int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
116 | void native_teardown_msi_irq(unsigned int irq); | |
ac8344c4 | 117 | void native_restore_msi_irqs(struct pci_dev *dev); |
294ee6f8 SS |
118 | #else |
119 | #define native_setup_msi_irqs NULL | |
120 | #define native_teardown_msi_irq NULL | |
294ee6f8 | 121 | #endif |
11df1f05 | 122 | |
67796bf7 JR |
123 | #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) |
124 | ||
67796bf7 JR |
125 | #endif /* __KERNEL__ */ |
126 | ||
127 | #ifdef CONFIG_X86_64 | |
a1ce3928 | 128 | #include <asm/pci_64.h> |
f3e6f164 GKH |
129 | #endif |
130 | ||
f3e6f164 GKH |
131 | /* generic pci stuff */ |
132 | #include <asm-generic/pci.h> | |
133 | ||
b4ea9299 TG |
134 | #ifdef CONFIG_NUMA |
135 | /* Returns the node based on pci bus */ | |
393d68fb | 136 | static inline int __pcibus_to_node(const struct pci_bus *bus) |
b4ea9299 | 137 | { |
393d68fb | 138 | const struct pci_sysdata *sd = bus->sysdata; |
b4ea9299 TG |
139 | |
140 | return sd->node; | |
141 | } | |
f3e6f164 | 142 | |
393d68fb RR |
143 | static inline const struct cpumask * |
144 | cpumask_of_pcibus(const struct pci_bus *bus) | |
145 | { | |
7715a1e8 DR |
146 | int node; |
147 | ||
148 | node = __pcibus_to_node(bus); | |
149 | return (node == -1) ? cpu_online_mask : | |
150 | cpumask_of_node(node); | |
393d68fb | 151 | } |
b4ea9299 | 152 | #endif |
f3e6f164 | 153 | |
dd5fc854 MG |
154 | struct pci_setup_rom { |
155 | struct setup_data data; | |
156 | uint16_t vendor; | |
157 | uint16_t devid; | |
158 | uint64_t pcilen; | |
159 | unsigned long segment; | |
160 | unsigned long bus; | |
161 | unsigned long device; | |
162 | unsigned long function; | |
163 | uint8_t romdata[0]; | |
164 | }; | |
165 | ||
1965aae3 | 166 | #endif /* _ASM_X86_PCI_H */ |