1 /* SPDX-License-Identifier: GPL-2.0 */
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>
12 #include <asm/x86_init.h>
17 int domain; /* PCI domain */
18 int node; /* NUMA node */
20 struct acpi_device *companion; /* ACPI companion device */
23 void *iommu; /* IOMMU private data */
25 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
26 void *fwnode; /* IRQ domain for MSI assignment */
28 #if IS_ENABLED(CONFIG_VMD)
29 bool vmd_domain; /* True if in Intel VMD domain */
33 extern int pci_routeirq;
34 extern int noioapicquirk;
35 extern int noioapicreroute;
39 #ifdef CONFIG_PCI_DOMAINS
40 static inline int pci_domain_nr(struct pci_bus *bus)
42 struct pci_sysdata *sd = bus->sysdata;
47 static inline int pci_proc_domain(struct pci_bus *bus)
49 return pci_domain_nr(bus);
53 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
54 static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
56 struct pci_sysdata *sd = bus->sysdata;
61 #define pci_root_bus_fwnode _pci_root_bus_fwnode
64 static inline bool is_vmd(struct pci_bus *bus)
66 #if IS_ENABLED(CONFIG_VMD)
67 struct pci_sysdata *sd = bus->sysdata;
69 return sd->vmd_domain;
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 */
79 extern unsigned int pcibios_assign_all_busses(void);
80 extern int pci_legacy_init(void);
82 static inline int pcibios_assign_all_busses(void) { return 0; }
85 extern unsigned long pci_mem_start;
86 #define PCIBIOS_MIN_IO 0x1000
87 #define PCIBIOS_MIN_MEM (pci_mem_start)
89 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
91 extern int pcibios_enabled;
92 void pcibios_config_init(void);
93 void pcibios_scan_root(int bus);
95 void pcibios_set_master(struct pci_dev *dev);
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);
100 #define HAVE_PCI_MMAP
101 #define arch_can_pci_mmap_wc() pat_enabled()
102 #define ARCH_GENERIC_PCI_MMAP_RESOURCE
105 extern void early_quirks(void);
107 static inline void early_quirks(void) { }
110 extern void pci_iommu_alloc(void);
112 #ifdef CONFIG_PCI_MSI
113 /* implemented in arch/x86/kernel/apic/io_apic. */
115 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
116 void native_teardown_msi_irq(unsigned int irq);
117 void native_restore_msi_irqs(struct pci_dev *dev);
119 #define native_setup_msi_irqs NULL
120 #define native_teardown_msi_irq NULL
123 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
125 #endif /* __KERNEL__ */
128 #include <asm/pci_64.h>
131 /* generic pci stuff */
132 #include <asm-generic/pci.h>
135 /* Returns the node based on pci bus */
136 static inline int __pcibus_to_node(const struct pci_bus *bus)
138 const struct pci_sysdata *sd = bus->sysdata;
143 static inline const struct cpumask *
144 cpumask_of_pcibus(const struct pci_bus *bus)
148 node = __pcibus_to_node(bus);
149 return (node == -1) ? cpu_online_mask :
150 cpumask_of_node(node);
154 struct pci_setup_rom {
155 struct setup_data data;
159 unsigned long segment;
161 unsigned long device;
162 unsigned long function;
166 #endif /* _ASM_X86_PCI_H */