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 <asm/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 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  84                                         enum pci_dma_burst_strategy *strat,
  85                                         unsigned long *strategy_parameter)
  86 {
  87         *strat = PCI_DMA_BURST_INFINITY;
  88         *strategy_parameter = ~0UL;
  89 }
  90 #else
  91 static inline void early_quirks(void) { }
  92 #endif
  93
  94 extern void pci_iommu_alloc(void);
  95
  96 #ifdef CONFIG_PCI_MSI
  97 /* implemented in arch/x86/kernel/apic/io_apic. */
  98 struct msi_desc;
  99 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 100 void native_teardown_msi_irq(unsigned int irq);
 101 void native_restore_msi_irqs(struct pci_dev *dev);
 102 #else
 103 #define native_setup_msi_irqs           NULL
 104 #define native_teardown_msi_irq         NULL
 105 #endif
 106
 107 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 108
 109 #endif  /* __KERNEL__ */
 110
 111 #ifdef CONFIG_X86_64
 112 #include <asm/pci_64.h>
 113 #endif
 114
 115 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 116 #include <asm-generic/pci-dma-compat.h>
 117
 118 /* generic pci stuff */
 119 #include <asm-generic/pci.h>
 120
 121 #ifdef CONFIG_NUMA
 122 /* Returns the node based on pci bus */
 123 static inline int __pcibus_to_node(const struct pci_bus *bus)
 124 {
 125         const struct pci_sysdata *sd = bus->sysdata;
 126
 127         return sd->node;
 128 }
 129
 130 static inline const struct cpumask *
 131 cpumask_of_pcibus(const struct pci_bus *bus)
 132 {
 133         int node;
 134
 135         node = __pcibus_to_node(bus);
 136         return (node == -1) ? cpu_online_mask :
 137                               cpumask_of_node(node);
 138 }
 139 #endif
 140
 141 struct pci_setup_rom {
 142         struct setup_data data;
 143         uint16_t vendor;
 144         uint16_t devid;
 145         uint64_t pcilen;
 146         unsigned long segment;
 147         unsigned long bus;
 148         unsigned long device;
 149         unsigned long function;
 150         uint8_t romdata[0];
 151 };
 152
 153 #endif /* _ASM_X86_PCI_H */