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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _ASM_X86_PCI_H
- #define _ASM_X86_PCI_H
- #include <linux/mm.h> /* for struct page */
- #include <linux/types.h>
- #include <linux/slab.h>
- #include <linux/string.h>
- #include <linux/scatterlist.h>
- #include <linux/numa.h>
- #include <asm/io.h>
- #include <asm/memtype.h>
- #include <asm/x86_init.h>
- struct pci_sysdata {
- int domain; /* PCI domain */
- int node; /* NUMA node */
- #ifdef CONFIG_ACPI
- struct acpi_device *companion; /* ACPI companion device */
- #endif
- #ifdef CONFIG_X86_64
- void *iommu; /* IOMMU private data */
- #endif
- #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
- void *fwnode; /* IRQ domain for MSI assignment */
- #endif
- #if IS_ENABLED(CONFIG_VMD)
- struct pci_dev *vmd_dev; /* VMD Device if in Intel VMD domain */
- #endif
- };
- extern int pci_routeirq;
- extern int noioapicquirk;
- extern int noioapicreroute;
- static inline struct pci_sysdata *to_pci_sysdata(const struct pci_bus *bus)
- {
- return bus->sysdata;
- }
- #ifdef CONFIG_PCI
- #ifdef CONFIG_PCI_DOMAINS
- static inline int pci_domain_nr(struct pci_bus *bus)
- {
- return to_pci_sysdata(bus)->domain;
- }
- static inline int pci_proc_domain(struct pci_bus *bus)
- {
- return pci_domain_nr(bus);
- }
- #endif
- #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
- static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
- {
- return to_pci_sysdata(bus)->fwnode;
- }
- #define pci_root_bus_fwnode _pci_root_bus_fwnode
- #endif
- #if IS_ENABLED(CONFIG_VMD)
- static inline bool is_vmd(struct pci_bus *bus)
- {
- return to_pci_sysdata(bus)->vmd_dev != NULL;
- }
- #else
- #define is_vmd(bus) false
- #endif /* CONFIG_VMD */
- /* Can be used to override the logic in pci_scan_bus for skipping
- already-configured bus numbers - to be used for buggy BIOSes
- or architectures with incomplete PCI setup by the loader */
- extern unsigned int pcibios_assign_all_busses(void);
- extern int pci_legacy_init(void);
- #else
- static inline int pcibios_assign_all_busses(void) { return 0; }
- #endif
- extern unsigned long pci_mem_start;
- #define PCIBIOS_MIN_IO 0x1000
- #define PCIBIOS_MIN_MEM (pci_mem_start)
- #define PCIBIOS_MIN_CARDBUS_IO 0x4000
- extern int pcibios_enabled;
- void pcibios_scan_root(int bus);
- struct irq_routing_table *pcibios_get_irq_routing_table(void);
- int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
- #define HAVE_PCI_MMAP
- #define arch_can_pci_mmap_wc() pat_enabled()
- #define ARCH_GENERIC_PCI_MMAP_RESOURCE
- #ifdef CONFIG_PCI
- extern void early_quirks(void);
- #else
- static inline void early_quirks(void) { }
- #endif
- extern void pci_iommu_alloc(void);
- #ifdef CONFIG_NUMA
- /* Returns the node based on pci bus */
- static inline int __pcibus_to_node(const struct pci_bus *bus)
- {
- return to_pci_sysdata(bus)->node;
- }
- static inline const struct cpumask *
- cpumask_of_pcibus(const struct pci_bus *bus)
- {
- int node;
- node = __pcibus_to_node(bus);
- return (node == NUMA_NO_NODE) ? cpu_online_mask :
- cpumask_of_node(node);
- }
- #endif
- struct pci_setup_rom {
- struct setup_data data;
- uint16_t vendor;
- uint16_t devid;
- uint64_t pcilen;
- unsigned long segment;
- unsigned long bus;
- unsigned long device;
- unsigned long function;
- uint8_t romdata[];
- };
- #endif /* _ASM_X86_PCI_H */
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