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
  14 struct 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
  25 extern int pci_routeirq;
  26 extern int noioapicquirk;
  27 extern int noioapicreroute;
  28
  29 #ifdef CONFIG_PCI
  30
  31 #ifdef CONFIG_PCI_DOMAINS
  32 static inline int pci_domain_nr(struct pci_bus *bus)
  33 {
  34         struct pci_sysdata *sd = bus->sysdata;
  35         return sd->domain;
  36 }
  37
  38 static 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
  48 extern unsigned int pcibios_assign_all_busses(void);
  49 extern 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
  60 extern 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
  66 extern int pcibios_enabled;
  67 void pcibios_config_init(void);
  68 void pcibios_scan_root(int bus);
  69
  70 void pcibios_set_master(struct pci_dev *dev);
  71 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  72 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  73
  74
  75 #define HAVE_PCI_MMAP
  76 extern 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
  82 extern void early_quirks(void);
  83 #else
  84 static inline void early_quirks(void) { }
  85 #endif
  86
  87 extern void pci_iommu_alloc(void);
  88
  89 #ifdef CONFIG_PCI_MSI
  90 /* implemented in arch/x86/kernel/apic/io_apic. */
  91 struct msi_desc;
  92 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
  93 void native_teardown_msi_irq(unsigned int irq);
  94 void 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 */
 116 static 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
 123 static inline const struct cpumask *
 124 cpumask_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
 134 struct 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 */