LXR linux/arch/x86/include/asm/pci.h

   1#ifndef _ASM_X86_PCI_H
   2#define _ASM_X86_PCI_H
   3
   4#include <linux/mm.h> /* for struct page */
   5#include <linux/types.h>
   6#include <linux/slab.h>
   7#include <linux/string.h>
   8#include <linux/scatterlist.h>
   9#include <asm/io.h>
  10#include <asm/x86_init.h>
  11
  12#ifdef __KERNEL__
  13
  14struct pci_sysdata {
  15        int             domain;         /* PCI domain */
  16        int             node;           /* NUMA node */
  17#ifdef CONFIG_ACPI
  18        struct acpi_device *companion;  /* ACPI companion device */
  19#endif
  20#ifdef CONFIG_X86_64
  21        void            *iommu;         /* IOMMU private data */
  22#endif
  23};
  24
  25extern int pci_routeirq;
  26extern int noioapicquirk;
  27extern int noioapicreroute;
  28
  29#ifdef CONFIG_PCI
  30
  31#ifdef CONFIG_PCI_DOMAINS
  32static inline int pci_domain_nr(struct pci_bus *bus)
  33{
  34        struct pci_sysdata *sd = bus->sysdata;
  35        return sd->domain;
  36}
  37
  38static inline int pci_proc_domain(struct pci_bus *bus)
  39{
  40        return pci_domain_nr(bus);
  41}
  42#endif
  43
  44/* Can be used to override the logic in pci_scan_bus for skipping
  45   already-configured bus numbers - to be used for buggy BIOSes
  46   or architectures with incomplete PCI setup by the loader */
  47
  48extern unsigned int pcibios_assign_all_busses(void);
  49extern int pci_legacy_init(void);
  50# ifdef CONFIG_ACPI
  51#  define x86_default_pci_init pci_acpi_init
  52# else
  53#  define x86_default_pci_init pci_legacy_init
  54# endif
  55#else
  56# define pcibios_assign_all_busses()    0
  57# define x86_default_pci_init           NULL
  58#endif
  59
  60extern unsigned long pci_mem_start;
  61#define PCIBIOS_MIN_IO          0x1000
  62#define PCIBIOS_MIN_MEM         (pci_mem_start)
  63
  64#define PCIBIOS_MIN_CARDBUS_IO  0x4000
  65
  66extern int pcibios_enabled;
  67void pcibios_config_init(void);
  68void pcibios_scan_root(int bus);
  69
  70void pcibios_set_master(struct pci_dev *dev);
  71struct irq_routing_table *pcibios_get_irq_routing_table(void);
  72int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  73
  74
  75#define HAVE_PCI_MMAP
  76extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  77                               enum pci_mmap_state mmap_state,
  78                               int write_combine);
  79
  80
  81#ifdef CONFIG_PCI
  82extern void early_quirks(void);
  83#else
  84static inline void early_quirks(void) { }
  85#endif
  86
  87extern void pci_iommu_alloc(void);
  88
  89#ifdef CONFIG_PCI_MSI
  90/* implemented in arch/x86/kernel/apic/io_apic. */
  91struct msi_desc;
  92int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
  93void native_teardown_msi_irq(unsigned int irq);
  94void native_restore_msi_irqs(struct pci_dev *dev);
  95#else
  96#define native_setup_msi_irqs           NULL
  97#define native_teardown_msi_irq         NULL
  98#endif
  99
 100#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 101
 102#endif  /* __KERNEL__ */
 103
 104#ifdef CONFIG_X86_64
 105#include <asm/pci_64.h>
 106#endif
 107
 108/* implement the pci_ DMA API in terms of the generic device dma_ one */
 109#include <asm-generic/pci-dma-compat.h>
 110
 111/* generic pci stuff */
 112#include <asm-generic/pci.h>
 113
 114#ifdef CONFIG_NUMA
 115/* Returns the node based on pci bus */
 116static inline int __pcibus_to_node(const struct pci_bus *bus)
 117{
 118        const struct pci_sysdata *sd = bus->sysdata;
 119
 120        return sd->node;
 121}
 122
 123static inline const struct cpumask *
 124cpumask_of_pcibus(const struct pci_bus *bus)
 125{
 126        int node;
 127
 128        node = __pcibus_to_node(bus);
 129        return (node == -1) ? cpu_online_mask :
 130                              cpumask_of_node(node);
 131}
 132#endif
 133
 134struct pci_setup_rom {
 135        struct setup_data data;
 136        uint16_t vendor;
 137        uint16_t devid;
 138        uint64_t pcilen;
 139        unsigned long segment;
 140        unsigned long bus;
 141        unsigned long device;
 142        unsigned long function;
 143        uint8_t romdata[0];
 144};
 145
 146#endif /* _ASM_X86_PCI_H */
 147