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_ACPI
  18         void            *acpi;          /* ACPI-specific data */
  19 #endif
  20 #ifdef CONFIG_X86_64
  21         void            *iommu;         /* IOMMU private data */
  22 #endif
  23 };
  24
  25 extern int pci_routeirq;
  26 extern int noioapicquirk;
  27 extern int noioapicreroute;
  28
  29 /* scan a bus after allocating a pci_sysdata for it */
  30 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
  31                                             int node);
  32 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  33
  34 #ifdef CONFIG_PCI
  35
  36 #ifdef CONFIG_PCI_DOMAINS
  37 static inline int pci_domain_nr(struct pci_bus *bus)
  38 {
  39         struct pci_sysdata *sd = bus->sysdata;
  40         return sd->domain;
  41 }
  42
  43 static inline int pci_proc_domain(struct pci_bus *bus)
  44 {
  45         return pci_domain_nr(bus);
  46 }
  47 #endif
  48
  49 /* Can be used to override the logic in pci_scan_bus for skipping
  50    already-configured bus numbers - to be used for buggy BIOSes
  51    or architectures with incomplete PCI setup by the loader */
  52
  53 extern unsigned int pcibios_assign_all_busses(void);
  54 extern int pci_legacy_init(void);
  55 # ifdef CONFIG_ACPI
  56 #  define x86_default_pci_init pci_acpi_init
  57 # else
  58 #  define x86_default_pci_init pci_legacy_init
  59 # endif
  60 #else
  61 # define pcibios_assign_all_busses()    0
  62 # define x86_default_pci_init           NULL
  63 #endif
  64
  65 extern unsigned long pci_mem_start;
  66 #define PCIBIOS_MIN_IO          0x1000
  67 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  68
  69 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  70
  71 extern int pcibios_enabled;
  72 void pcibios_config_init(void);
  73 struct pci_bus *pcibios_scan_root(int bus);
  74
  75 void pcibios_set_master(struct pci_dev *dev);
  76 void pcibios_penalize_isa_irq(int irq, int active);
  77 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  78 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  79
  80
  81 #define HAVE_PCI_MMAP
  82 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  83                                enum pci_mmap_state mmap_state,
  84                                int write_combine);
  85
  86
  87 #ifdef CONFIG_PCI
  88 extern void early_quirks(void);
  89 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  90                                         enum pci_dma_burst_strategy *strat,
  91                                         unsigned long *strategy_parameter)
  92 {
  93         *strat = PCI_DMA_BURST_INFINITY;
  94         *strategy_parameter = ~0UL;
  95 }
  96 #else
  97 static inline void early_quirks(void) { }
  98 #endif
  99
 100 extern void pci_iommu_alloc(void);
 101
 102 #ifdef CONFIG_PCI_MSI
 103 /* MSI arch specific hooks */
 104 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 105 {
 106         return x86_msi.setup_msi_irqs(dev, nvec, type);
 107 }
 108
 109 static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
 110 {
 111         x86_msi.teardown_msi_irqs(dev);
 112 }
 113
 114 static inline void x86_teardown_msi_irq(unsigned int irq)
 115 {
 116         x86_msi.teardown_msi_irq(irq);
 117 }
 118 static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
 119 {
 120         x86_msi.restore_msi_irqs(dev, irq);
 121 }
 122 #define arch_setup_msi_irqs x86_setup_msi_irqs
 123 #define arch_teardown_msi_irqs x86_teardown_msi_irqs
 124 #define arch_teardown_msi_irq x86_teardown_msi_irq
 125 #define arch_restore_msi_irqs x86_restore_msi_irqs
 126 /* implemented in arch/x86/kernel/apic/io_apic. */
 127 struct msi_desc;
 128 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 129 void native_teardown_msi_irq(unsigned int irq);
 130 void native_restore_msi_irqs(struct pci_dev *dev, int irq);
 131 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
 132                   unsigned int irq_base, unsigned int irq_offset);
 133 /* default to the implementation in drivers/lib/msi.c */
 134 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
 135 #define HAVE_DEFAULT_MSI_RESTORE_IRQS
 136 void default_teardown_msi_irqs(struct pci_dev *dev);
 137 void default_restore_msi_irqs(struct pci_dev *dev, int irq);
 138 #else
 139 #define native_setup_msi_irqs           NULL
 140 #define native_teardown_msi_irq         NULL
 141 #define default_teardown_msi_irqs       NULL
 142 #define default_restore_msi_irqs        NULL
 143 #endif
 144
 145 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 146
 147 #endif  /* __KERNEL__ */
 148
 149 #ifdef CONFIG_X86_64
 150 #include <asm/pci_64.h>
 151 #endif
 152
 153 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 154 #include <asm-generic/pci-dma-compat.h>
 155
 156 /* generic pci stuff */
 157 #include <asm-generic/pci.h>
 158 #define PCIBIOS_MAX_MEM_32 0xffffffff
 159
 160 #ifdef CONFIG_NUMA
 161 /* Returns the node based on pci bus */
 162 static inline int __pcibus_to_node(const struct pci_bus *bus)
 163 {
 164         const struct pci_sysdata *sd = bus->sysdata;
 165
 166         return sd->node;
 167 }
 168
 169 static inline const struct cpumask *
 170 cpumask_of_pcibus(const struct pci_bus *bus)
 171 {
 172         int node;
 173
 174         node = __pcibus_to_node(bus);
 175         return (node == -1) ? cpu_online_mask :
 176                               cpumask_of_node(node);
 177 }
 178 #endif
 179
 180 struct pci_setup_rom {
 181         struct setup_data data;
 182         uint16_t vendor;
 183         uint16_t devid;
 184         uint64_t pcilen;
 185         unsigned long segment;
 186         unsigned long bus;
 187         unsigned long device;
 188         unsigned long function;
 189         uint8_t romdata[0];
 190 };
 191
 192 #endif /* _ASM_X86_PCI_H */