include/asm-x86/pci.h

   1 #ifndef __x86_PCI_H
   2 #define __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
  23 /* scan a bus after allocating a pci_sysdata for it */
  24 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  25                                             int node);
  26 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  27
  28 static inline int pci_domain_nr(struct pci_bus *bus)
  29 {
  30         struct pci_sysdata *sd = bus->sysdata;
  31         return sd->domain;
  32 }
  33
  34 static inline int pci_proc_domain(struct pci_bus *bus)
  35 {
  36         return pci_domain_nr(bus);
  37 }
  38
  39
  40 /* Can be used to override the logic in pci_scan_bus for skipping
  41    already-configured bus numbers - to be used for buggy BIOSes
  42    or architectures with incomplete PCI setup by the loader */
  43
  44 #ifdef CONFIG_PCI
  45 extern unsigned int pcibios_assign_all_busses(void);
  46 #else
  47 #define pcibios_assign_all_busses()     0
  48 #endif
  49 #define pcibios_scan_all_fns(a, b)      0
  50
  51 extern unsigned long pci_mem_start;
  52 #define PCIBIOS_MIN_IO          0x1000
  53 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  54
  55 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  56
  57 void pcibios_config_init(void);
  58 struct pci_bus *pcibios_scan_root(int bus);
  59
  60 void pcibios_set_master(struct pci_dev *dev);
  61 void pcibios_penalize_isa_irq(int irq, int active);
  62 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  63 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  64
  65
  66 #define HAVE_PCI_MMAP
  67 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  68                                enum pci_mmap_state mmap_state,
  69                                int write_combine);
  70
  71
  72 #ifdef CONFIG_PCI
  73 extern void early_quirks(void);
  74 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  75                                         enum pci_dma_burst_strategy *strat,
  76                                         unsigned long *strategy_parameter)
  77 {
  78         *strat = PCI_DMA_BURST_INFINITY;
  79         *strategy_parameter = ~0UL;
  80 }
  81 #else
  82 static inline void early_quirks(void) { }
  83 #endif
  84
  85 #endif  /* __KERNEL__ */
  86
  87 #ifdef CONFIG_X86_32
  88 # include "pci_32.h"
  89 #else
  90 # include "pci_64.h"
  91 #endif
  92
  93 /* implement the pci_ DMA API in terms of the generic device dma_ one */
  94 #include <asm-generic/pci-dma-compat.h>
  95
  96 /* generic pci stuff */
  97 #include <asm-generic/pci.h>
  98
  99 #ifdef CONFIG_NUMA
 100 /* Returns the node based on pci bus */
 101 static inline int __pcibus_to_node(struct pci_bus *bus)
 102 {
 103         struct pci_sysdata *sd = bus->sysdata;
 104
 105         return sd->node;
 106 }
 107
 108 static inline cpumask_t __pcibus_to_cpumask(struct pci_bus *bus)
 109 {
 110         return node_to_cpumask(__pcibus_to_node(bus));
 111 }
 112 #endif
 113
 114 #endif