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         void            *acpi;          /* ACPI-specific data */
  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 /* scan a bus after allocating a pci_sysdata for it */
  30 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  31                                             int node);
  32 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  33
  34 #ifdef CONFIG_PCI
  35
  36 #ifdef CONFIG_PCI_DOMAINS
  37 static inline int pci_domain_nr(struct pci_bus *bus)
  38 {
  39         struct pci_sysdata *sd = bus->sysdata;
  40         return sd->domain;
  41 }
  42
  43 static inline int pci_proc_domain(struct pci_bus *bus)
  44 {
  45         return pci_domain_nr(bus);
  46 }
  47 #endif
  48
  49 /* Can be used to override the logic in pci_scan_bus for skipping
  50    already-configured bus numbers - to be used for buggy BIOSes
  51    or architectures with incomplete PCI setup by the loader */
  52
  53 extern unsigned int pcibios_assign_all_busses(void);
  54 extern int pci_legacy_init(void);
  55 # ifdef CONFIG_ACPI
  56 #  define x86_default_pci_init pci_acpi_init
  57 # else
  58 #  define x86_default_pci_init pci_legacy_init
  59 # endif
  60 #else
  61 # define pcibios_assign_all_busses()    0
  62 # define x86_default_pci_init           NULL
  63 #endif
  64
  65 extern unsigned long pci_mem_start;
  66 #define PCIBIOS_MIN_IO          0x1000
  67 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  68
  69 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  70
  71 extern int pcibios_enabled;
  72 void pcibios_config_init(void);
  73 struct pci_bus *pcibios_scan_root(int bus);
  74
  75 void pcibios_set_master(struct pci_dev *dev);
  76 void pcibios_penalize_isa_irq(int irq, int active);
  77 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  78 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  79
  80
  81 #define HAVE_PCI_MMAP
  82 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  83                                enum pci_mmap_state mmap_state,
  84                                int write_combine);
  85
  86
  87 #ifdef CONFIG_PCI
  88 extern void early_quirks(void);
  89 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  90                                         enum pci_dma_burst_strategy *strat,
  91                                         unsigned long *strategy_parameter)
  92 {
  93         *strat = PCI_DMA_BURST_INFINITY;
  94         *strategy_parameter = ~0UL;
  95 }
  96 #else
  97 static inline void early_quirks(void) { }
  98 #endif
  99
 100 extern void pci_iommu_alloc(void);
 101
 102 #ifdef CONFIG_PCI_MSI
 103 /* implemented in arch/x86/kernel/apic/io_apic. */
 104 struct msi_desc;
 105 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 106 void native_teardown_msi_irq(unsigned int irq);
 107 void native_restore_msi_irqs(struct pci_dev *dev, int irq);
 108 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
 109                   unsigned int irq_base, unsigned int irq_offset);
 110 #else
 111 #define native_setup_msi_irqs           NULL
 112 #define native_teardown_msi_irq         NULL
 113 #endif
 114
 115 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 116
 117 #endif  /* __KERNEL__ */
 118
 119 #ifdef CONFIG_X86_64
 120 #include <asm/pci_64.h>
 121 #endif
 122
 123 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 124 #include <asm-generic/pci-dma-compat.h>
 125
 126 /* generic pci stuff */
 127 #include <asm-generic/pci.h>
 128 #define PCIBIOS_MAX_MEM_32 0xffffffff
 129
 130 #ifdef CONFIG_NUMA
 131 /* Returns the node based on pci bus */
 132 static inline int __pcibus_to_node(const struct pci_bus *bus)
 133 {
 134         const struct pci_sysdata *sd = bus->sysdata;
 135
 136         return sd->node;
 137 }
 138
 139 static inline const struct cpumask *
 140 cpumask_of_pcibus(const struct pci_bus *bus)
 141 {
 142         int node;
 143
 144         node = __pcibus_to_node(bus);
 145         return (node == -1) ? cpu_online_mask :
 146                               cpumask_of_node(node);
 147 }
 148 #endif
 149
 150 struct pci_setup_rom {
 151         struct setup_data data;
 152         uint16_t vendor;
 153         uint16_t devid;
 154         uint64_t pcilen;
 155         unsigned long segment;
 156         unsigned long bus;
 157         unsigned long device;
 158         unsigned long function;
 159         uint8_t romdata[0];
 160 };
 161
 162 #endif /* _ASM_X86_PCI_H */