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_with_sysdata(int busno);
  23
  24 static inline int pci_domain_nr(struct pci_bus *bus)
  25 {
  26         struct pci_sysdata *sd = bus->sysdata;
  27         return sd->domain;
  28 }
  29
  30 static inline int pci_proc_domain(struct pci_bus *bus)
  31 {
  32         return pci_domain_nr(bus);
  33 }
  34
  35
  36 /* Can be used to override the logic in pci_scan_bus for skipping
  37    already-configured bus numbers - to be used for buggy BIOSes
  38    or architectures with incomplete PCI setup by the loader */
  39
  40 #ifdef CONFIG_PCI
  41 extern unsigned int pcibios_assign_all_busses(void);
  42 #else
  43 #define pcibios_assign_all_busses()     0
  44 #endif
  45 #define pcibios_scan_all_fns(a, b)      0
  46
  47 extern unsigned long pci_mem_start;
  48 #define PCIBIOS_MIN_IO          0x1000
  49 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  50
  51 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  52
  53 void pcibios_config_init(void);
  54 struct pci_bus *pcibios_scan_root(int bus);
  55
  56 void pcibios_set_master(struct pci_dev *dev);
  57 void pcibios_penalize_isa_irq(int irq, int active);
  58 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  59 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  60
  61
  62 #define HAVE_PCI_MMAP
  63 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  64                                enum pci_mmap_state mmap_state,
  65                                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