165 lines
3.5 KiB
C
165 lines
3.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_PCI_H
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#define _ASM_X86_PCI_H
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#include <linux/mm.h> /* for struct page */
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/scatterlist.h>
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#include <asm/io.h>
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#include <asm/pat.h>
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#include <asm/x86_init.h>
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#ifdef __KERNEL__
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struct pci_sysdata {
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int domain; /* PCI domain */
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int node; /* NUMA node */
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#ifdef CONFIG_ACPI
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struct acpi_device *companion; /* ACPI companion device */
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#endif
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#ifdef CONFIG_X86_64
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void *iommu; /* IOMMU private data */
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#endif
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#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
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void *fwnode; /* IRQ domain for MSI assignment */
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#endif
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#if IS_ENABLED(CONFIG_VMD)
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bool vmd_domain; /* True if in Intel VMD domain */
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#endif
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};
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extern int pci_routeirq;
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extern int noioapicquirk;
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extern int noioapicreroute;
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#ifdef CONFIG_PCI
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#ifdef CONFIG_PCI_DOMAINS
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static inline int pci_domain_nr(struct pci_bus *bus)
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{
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struct pci_sysdata *sd = bus->sysdata;
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return sd->domain;
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}
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static inline int pci_proc_domain(struct pci_bus *bus)
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{
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return pci_domain_nr(bus);
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}
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#endif
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#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
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static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
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{
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struct pci_sysdata *sd = bus->sysdata;
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return sd->fwnode;
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}
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#define pci_root_bus_fwnode _pci_root_bus_fwnode
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#endif
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static inline bool is_vmd(struct pci_bus *bus)
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{
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#if IS_ENABLED(CONFIG_VMD)
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struct pci_sysdata *sd = bus->sysdata;
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return sd->vmd_domain;
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#else
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return false;
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#endif
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}
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/* Can be used to override the logic in pci_scan_bus for skipping
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already-configured bus numbers - to be used for buggy BIOSes
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or architectures with incomplete PCI setup by the loader */
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extern unsigned int pcibios_assign_all_busses(void);
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extern int pci_legacy_init(void);
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#else
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static inline int pcibios_assign_all_busses(void) { return 0; }
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#endif
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extern unsigned long pci_mem_start;
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#define PCIBIOS_MIN_IO 0x1000
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#define PCIBIOS_MIN_MEM (pci_mem_start)
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#define PCIBIOS_MIN_CARDBUS_IO 0x4000
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extern int pcibios_enabled;
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void pcibios_scan_root(int bus);
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struct irq_routing_table *pcibios_get_irq_routing_table(void);
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int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
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#define HAVE_PCI_MMAP
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#define arch_can_pci_mmap_wc() pat_enabled()
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#define ARCH_GENERIC_PCI_MMAP_RESOURCE
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#ifdef CONFIG_PCI
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extern void early_quirks(void);
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#else
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static inline void early_quirks(void) { }
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#endif
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extern void pci_iommu_alloc(void);
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#ifdef CONFIG_PCI_MSI
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/* implemented in arch/x86/kernel/apic/io_apic. */
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struct msi_desc;
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int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
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void native_teardown_msi_irq(unsigned int irq);
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void native_restore_msi_irqs(struct pci_dev *dev);
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#else
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#define native_setup_msi_irqs NULL
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#define native_teardown_msi_irq NULL
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#endif
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#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
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#endif /* __KERNEL__ */
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#ifdef CONFIG_X86_64
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#include <asm/pci_64.h>
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#endif
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/* generic pci stuff */
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#include <asm-generic/pci.h>
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#ifdef CONFIG_NUMA
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/* Returns the node based on pci bus */
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static inline int __pcibus_to_node(const struct pci_bus *bus)
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{
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const struct pci_sysdata *sd = bus->sysdata;
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return sd->node;
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}
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static inline const struct cpumask *
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cpumask_of_pcibus(const struct pci_bus *bus)
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{
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int node;
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node = __pcibus_to_node(bus);
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return (node == -1) ? cpu_online_mask :
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cpumask_of_node(node);
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}
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#endif
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struct pci_setup_rom {
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struct setup_data data;
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uint16_t vendor;
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uint16_t devid;
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uint64_t pcilen;
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unsigned long segment;
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unsigned long bus;
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unsigned long device;
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unsigned long function;
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uint8_t romdata[0];
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};
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#endif /* _ASM_X86_PCI_H */
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