Release 4.14 arch/x86/include/asm/pci.h

/* 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;
}

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static inline int pci_proc_domain(struct pci_bus *bus)
{
	return pci_domain_nr(bus);
}
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#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;
}

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#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
}

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/* 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; }
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#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_config_init(void);
void pcibios_scan_root(int bus);

void pcibios_set_master(struct pci_dev *dev);
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) { }
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#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;
}

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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);
}
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#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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Directory: arch/x86/include/asm

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