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