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
  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 extern int pci_routeirq;
  23 extern int noioapicquirk;
  24 extern int noioapicreroute;
  25
  26 /* scan a bus after allocating a pci_sysdata for it */
  27 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  28                                             int node);
  29 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  30
  31 #ifdef CONFIG_PCI
  32
  33 #ifdef CONFIG_PCI_DOMAINS
  34 static inline int pci_domain_nr(struct pci_bus *bus)
  35 {
  36         struct pci_sysdata *sd = bus->sysdata;
  37         return sd->domain;
  38 }
  39
  40 static 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
  50 extern unsigned int pcibios_assign_all_busses(void);
  51 extern 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
  62 extern 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
  68 extern int pcibios_enabled;
  69 void pcibios_config_init(void);
  70 struct pci_bus *pcibios_scan_root(int bus);
  71
  72 void pcibios_set_master(struct pci_dev *dev);
  73 void pcibios_penalize_isa_irq(int irq, int active);
  74 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  75 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  76
  77
  78 #define HAVE_PCI_MMAP
  79 extern 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
  85 extern void early_quirks(void);
  86 static 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
  94 static inline void early_quirks(void) { }
  95 #endif
  96
  97 extern void pci_iommu_alloc(void);
  98
  99 #ifdef CONFIG_PCI_MSI
 100 /* MSI arch specific hooks */
 101 static 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
 106 static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
 107 {
 108         x86_msi.teardown_msi_irqs(dev);
 109 }
 110
 111 static 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. */
 119 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 120 void native_teardown_msi_irq(unsigned int irq);
 121 /* default to the implementation in drivers/lib/msi.c */
 122 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
 123 void 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 */
 147 static 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
 154 static inline const struct cpumask *
 155 cpumask_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 */