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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 <asm/io.h>
#include <asm/pat.h>
#include <asm/x86_init.h>
#ifdef __KERNEL__
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)
bool vmd_domain; /* True if in Intel VMD domain */
#endif
};
extern int pci_routeirq;
extern int noioapicquirk;
extern int noioapicreroute;
#ifdef CONFIG_PCI
#ifdef CONFIG_PCI_DOMAINS
static inline int pci_domain_nr(struct pci_bus *bus)
{
struct pci_sysdata *sd = bus->sysdata;
return sd->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)
{
struct pci_sysdata *sd = bus->sysdata;
return sd->fwnode;
}
#define pci_root_bus_fwnode _pci_root_bus_fwnode
#endif
static inline bool is_vmd(struct pci_bus *bus)
{
#if IS_ENABLED(CONFIG_VMD)
struct pci_sysdata *sd = bus->sysdata;
return sd->vmd_domain;
#else
return false;
#endif
}
/* 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_PCI_MSI
/* implemented in arch/x86/kernel/apic/io_apic. */
struct msi_desc;
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void native_teardown_msi_irq(unsigned int irq);
void native_restore_msi_irqs(struct pci_dev *dev);
#else
#define native_setup_msi_irqs NULL
#define native_teardown_msi_irq NULL
#endif
#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
#endif /* __KERNEL__ */
#ifdef CONFIG_X86_64
#include <asm/pci_64.h>
#endif
/* generic pci stuff */
#include <asm-generic/pci.h>
#ifdef CONFIG_NUMA
/* Returns the node based on pci bus */
static inline int __pcibus_to_node(const struct pci_bus *bus)
{
const struct pci_sysdata *sd = bus->sysdata;
return sd->node;
}
static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus *bus)
{
int node;
node = __pcibus_to_node(bus);
return (node == -1) ? 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[0];
};
#endif /* _ASM_X86_PCI_H */
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