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_X86_64
  18        void            *iommu;         /* IOMMU private data */
  19#endif
  20};
  21
  22extern int pci_routeirq;
  23extern int noioapicquirk;
  24extern int noioapicreroute;
  25
  26/* scan a bus after allocating a pci_sysdata for it */
  27extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  28                                            int node);
  29extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  30
  31#ifdef CONFIG_PCI
  32
  33#ifdef CONFIG_PCI_DOMAINS
  34static inline int pci_domain_nr(struct pci_bus *bus)
  35{
  36        struct pci_sysdata *sd = bus->sysdata;
  37        return sd->domain;
  38}
  39
  40static inline int pci_proc_domain(struct pci_bus *bus)
  41{
  42        return pci_domain_nr(bus);
  43}
  44#endif
  45
  46/* Can be used to override the logic in pci_scan_bus for skipping
  47   already-configured bus numbers - to be used for buggy BIOSes
  48   or architectures with incomplete PCI setup by the loader */
  49
  50extern unsigned int pcibios_assign_all_busses(void);
  51extern int pci_legacy_init(void);
  52# ifdef CONFIG_ACPI
  53#  define x86_default_pci_init pci_acpi_init
  54# else
  55#  define x86_default_pci_init pci_legacy_init
  56# endif
  57#else
  58# define pcibios_assign_all_busses()    0
  59# define x86_default_pci_init           NULL
  60#endif
  61
  62extern unsigned long pci_mem_start;
  63#define PCIBIOS_MIN_IO          0x1000
  64#define PCIBIOS_MIN_MEM         (pci_mem_start)
  65
  66#define PCIBIOS_MIN_CARDBUS_IO  0x4000
  67
  68extern int pcibios_enabled;
  69void pcibios_config_init(void);
  70struct pci_bus *pcibios_scan_root(int bus);
  71
  72void pcibios_set_master(struct pci_dev *dev);
  73void pcibios_penalize_isa_irq(int irq, int active);
  74struct irq_routing_table *pcibios_get_irq_routing_table(void);
  75int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  76
  77
  78#define HAVE_PCI_MMAP
  79extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  80                               enum pci_mmap_state mmap_state,
  81                               int write_combine);
  82
  83
  84#ifdef CONFIG_PCI
  85extern void early_quirks(void);
  86static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  87                                        enum pci_dma_burst_strategy *strat,
  88                                        unsigned long *strategy_parameter)
  89{
  90        *strat = PCI_DMA_BURST_INFINITY;
  91        *strategy_parameter = ~0UL;
  92}
  93#else
  94static inline void early_quirks(void) { }
  95#endif
  96
  97extern void pci_iommu_alloc(void);
  98
  99#ifdef CONFIG_PCI_MSI
 100/* MSI arch specific hooks */
 101static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 102{
 103        return x86_msi.setup_msi_irqs(dev, nvec, type);
 104}
 105
 106static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
 107{
 108        x86_msi.teardown_msi_irqs(dev);
 109}
 110
 111static inline void x86_teardown_msi_irq(unsigned int irq)
 112{
 113        x86_msi.teardown_msi_irq(irq);
 114}
 115#define arch_setup_msi_irqs x86_setup_msi_irqs
 116#define arch_teardown_msi_irqs x86_teardown_msi_irqs
 117#define arch_teardown_msi_irq x86_teardown_msi_irq
 118/* implemented in arch/x86/kernel/apic/io_apic. */
 119int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 120void native_teardown_msi_irq(unsigned int irq);
 121/* default to the implementation in drivers/lib/msi.c */
 122#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
 123void default_teardown_msi_irqs(struct pci_dev *dev);
 124#else
 125#define native_setup_msi_irqs           NULL
 126#define native_teardown_msi_irq         NULL
 127#define default_teardown_msi_irqs       NULL
 128#endif
 129
 130#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 131
 132#endif  /* __KERNEL__ */
 133
 134#ifdef CONFIG_X86_64
 135#include "pci_64.h"
 136#endif
 137
 138/* implement the pci_ DMA API in terms of the generic device dma_ one */
 139#include <asm-generic/pci-dma-compat.h>
 140
 141/* generic pci stuff */
 142#include <asm-generic/pci.h>
 143#define PCIBIOS_MAX_MEM_32 0xffffffff
 144
 145#ifdef CONFIG_NUMA
 146/* Returns the node based on pci bus */
 147static inline int __pcibus_to_node(const struct pci_bus *bus)
 148{
 149        const struct pci_sysdata *sd = bus->sysdata;
 150
 151        return sd->node;
 152}
 153
 154static inline const struct cpumask *
 155cpumask_of_pcibus(const struct pci_bus *bus)
 156{
 157        int node;
 158
 159        node = __pcibus_to_node(bus);
 160        return (node == -1) ? cpu_online_mask :
 161                              cpumask_of_node(node);
 162}
 163#endif
 164
 165#endif /* _ASM_X86_PCI_H */
 166