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