LXR linux/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#include <asm/x86_init.h>
  11
  12#ifdef __KERNEL__
  13
  14struct pci_sysdata {
  15        int             domain;         /* PCI domain */
  16        int             node;           /* NUMA node */
  17#ifdef CONFIG_ACPI
  18        struct acpi_device *companion;  /* ACPI companion device */
  19#endif
  20#ifdef CONFIG_X86_64
  21        void            *iommu;         /* IOMMU private data */
  22#endif
  23};
  24
  25extern int pci_routeirq;
  26extern int noioapicquirk;
  27extern int noioapicreroute;
  28
  29#ifdef CONFIG_PCI
  30
  31#ifdef CONFIG_PCI_DOMAINS
  32static inline int pci_domain_nr(struct pci_bus *bus)
  33{
  34        struct pci_sysdata *sd = bus->sysdata;
  35        return sd->domain;
  36}
  37
  38static inline int pci_proc_domain(struct pci_bus *bus)
  39{
  40        return pci_domain_nr(bus);
  41}
  42#endif
  43
  44/* Can be used to override the logic in pci_scan_bus for skipping
  45   already-configured bus numbers - to be used for buggy BIOSes
  46   or architectures with incomplete PCI setup by the loader */
  47
  48extern unsigned int pcibios_assign_all_busses(void);
  49extern int pci_legacy_init(void);
  50# ifdef CONFIG_ACPI
  51#  define x86_default_pci_init pci_acpi_init
  52# else
  53#  define x86_default_pci_init pci_legacy_init
  54# endif
  55#else
  56# define pcibios_assign_all_busses()    0
  57# define x86_default_pci_init           NULL
  58#endif
  59
  60extern unsigned long pci_mem_start;
  61#define PCIBIOS_MIN_IO          0x1000
  62#define PCIBIOS_MIN_MEM         (pci_mem_start)
  63
  64#define PCIBIOS_MIN_CARDBUS_IO  0x4000
  65
  66extern int pcibios_enabled;
  67void pcibios_config_init(void);
  68void pcibios_scan_root(int bus);
  69
  70void pcibios_set_master(struct pci_dev *dev);
  71void pcibios_penalize_isa_irq(int irq, int active);
  72struct irq_routing_table *pcibios_get_irq_routing_table(void);
  73int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  74
  75
  76#define HAVE_PCI_MMAP
  77extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  78                               enum pci_mmap_state mmap_state,
  79                               int write_combine);
  80
  81
  82#ifdef CONFIG_PCI
  83extern void early_quirks(void);
  84static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  85                                        enum pci_dma_burst_strategy *strat,
  86                                        unsigned long *strategy_parameter)
  87{
  88        *strat = PCI_DMA_BURST_INFINITY;
  89        *strategy_parameter = ~0UL;
  90}
  91#else
  92static inline void early_quirks(void) { }
  93#endif
  94
  95extern void pci_iommu_alloc(void);
  96
  97#ifdef CONFIG_PCI_MSI
  98/* implemented in arch/x86/kernel/apic/io_apic. */
  99struct msi_desc;
 100int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 101void native_teardown_msi_irq(unsigned int irq);
 102void native_restore_msi_irqs(struct pci_dev *dev);
 103int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
 104                  unsigned int irq_base, unsigned int irq_offset);
 105#else
 106#define native_setup_msi_irqs           NULL
 107#define native_teardown_msi_irq         NULL
 108#endif
 109
 110#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 111
 112#endif  /* __KERNEL__ */
 113
 114#ifdef CONFIG_X86_64
 115#include <asm/pci_64.h>
 116#endif
 117
 118/* implement the pci_ DMA API in terms of the generic device dma_ one */
 119#include <asm-generic/pci-dma-compat.h>
 120
 121/* generic pci stuff */
 122#include <asm-generic/pci.h>
 123
 124#ifdef CONFIG_NUMA
 125/* Returns the node based on pci bus */
 126static inline int __pcibus_to_node(const struct pci_bus *bus)
 127{
 128        const struct pci_sysdata *sd = bus->sysdata;
 129
 130        return sd->node;
 131}
 132
 133static inline const struct cpumask *
 134cpumask_of_pcibus(const struct pci_bus *bus)
 135{
 136        int node;
 137
 138        node = __pcibus_to_node(bus);
 139        return (node == -1) ? cpu_online_mask :
 140                              cpumask_of_node(node);
 141}
 142#endif
 143
 144struct pci_setup_rom {
 145        struct setup_data data;
 146        uint16_t vendor;
 147        uint16_t devid;
 148        uint64_t pcilen;
 149        unsigned long segment;
 150        unsigned long bus;
 151        unsigned long device;
 152        unsigned long function;
 153        uint8_t romdata[0];
 154};
 155
 156#endif /* _ASM_X86_PCI_H */
 157