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
  11 #ifdef __KERNEL__
  12
  13 struct pci_sysdata {
  14         int             domain;         /* PCI domain */
  15         int             node;           /* NUMA node */
  16 #ifdef CONFIG_X86_64
  17         void            *iommu;         /* IOMMU private data */
  18 #endif
  19 };
  20
  21 extern int pci_routeirq;
  22 extern int noioapicquirk;
  23 extern int noioapicreroute;
  24
  25 /* scan a bus after allocating a pci_sysdata for it */
  26 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  27                                             int node);
  28 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  29
  30 static inline int pci_domain_nr(struct pci_bus *bus)
  31 {
  32         struct pci_sysdata *sd = bus->sysdata;
  33         return sd->domain;
  34 }
  35
  36 static inline int pci_proc_domain(struct pci_bus *bus)
  37 {
  38         return pci_domain_nr(bus);
  39 }
  40
  41
  42 /* Can be used to override the logic in pci_scan_bus for skipping
  43    already-configured bus numbers - to be used for buggy BIOSes
  44    or architectures with incomplete PCI setup by the loader */
  45
  46 #ifdef CONFIG_PCI
  47 extern unsigned int pcibios_assign_all_busses(void);
  48 #else
  49 #define pcibios_assign_all_busses()     0
  50 #endif
  51 #define pcibios_scan_all_fns(a, b)      0
  52
  53 extern unsigned long pci_mem_start;
  54 #define PCIBIOS_MIN_IO          0x1000
  55 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  56
  57 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  58
  59 void pcibios_config_init(void);
  60 struct pci_bus *pcibios_scan_root(int bus);
  61
  62 void pcibios_set_master(struct pci_dev *dev);
  63 void pcibios_penalize_isa_irq(int irq, int active);
  64 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  65 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  66
  67
  68 #define HAVE_PCI_MMAP
  69 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  70                                enum pci_mmap_state mmap_state,
  71                                int write_combine);
  72
  73
  74 #ifdef CONFIG_PCI
  75 extern void early_quirks(void);
  76 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  77                                         enum pci_dma_burst_strategy *strat,
  78                                         unsigned long *strategy_parameter)
  79 {
  80         *strat = PCI_DMA_BURST_INFINITY;
  81         *strategy_parameter = ~0UL;
  82 }
  83 #else
  84 static inline void early_quirks(void) { }
  85 #endif
  86
  87 extern void pci_iommu_alloc(void);
  88
  89 /* MSI arch hook */
  90 #define arch_setup_msi_irqs arch_setup_msi_irqs
  91
  92 #endif  /* __KERNEL__ */
  93
  94 #ifdef CONFIG_X86_32
  95 # include "pci_32.h"
  96 #else
  97 # include "pci_64.h"
  98 #endif
  99
 100 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 101 #include <asm-generic/pci-dma-compat.h>
 102
 103 /* generic pci stuff */
 104 #include <asm-generic/pci.h>
 105
 106 #ifdef CONFIG_NUMA
 107 /* Returns the node based on pci bus */
 108 static inline int __pcibus_to_node(const struct pci_bus *bus)
 109 {
 110         const struct pci_sysdata *sd = bus->sysdata;
 111
 112         return sd->node;
 113 }
 114
 115 static inline cpumask_t __pcibus_to_cpumask(struct pci_bus *bus)
 116 {
 117         return node_to_cpumask(__pcibus_to_node(bus));
 118 }
 119
 120 static inline const struct cpumask *
 121 cpumask_of_pcibus(const struct pci_bus *bus)
 122 {
 123         return cpumask_of_node(__pcibus_to_node(bus));
 124 }
 125 #endif
 126
 127 #endif /* _ASM_X86_PCI_H */