include/asm-x86/pci_64.h

   1 #ifndef __x8664_PCI_H
   2 #define __x8664_PCI_H
   3
   4 #include <asm/io.h>
   5
   6 #ifdef __KERNEL__
   7
   8 struct pci_sysdata {
   9         int             node;           /* NUMA node */
  10         void*           iommu;          /* IOMMU private data */
  11 };
  12
  13 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
  14
  15 #ifdef CONFIG_CALGARY_IOMMU
  16 static inline void* pci_iommu(struct pci_bus *bus)
  17 {
  18         struct pci_sysdata *sd = bus->sysdata;
  19         return sd->iommu;
  20 }
  21
  22 static inline void set_pci_iommu(struct pci_bus *bus, void *val)
  23 {
  24         struct pci_sysdata *sd = bus->sysdata;
  25         sd->iommu = val;
  26 }
  27 #endif /* CONFIG_CALGARY_IOMMU */
  28
  29 #include <linux/mm.h> /* for struct page */
  30
  31 /* Can be used to override the logic in pci_scan_bus for skipping
  32    already-configured bus numbers - to be used for buggy BIOSes
  33    or architectures with incomplete PCI setup by the loader */
  34
  35 #ifdef CONFIG_PCI
  36 extern unsigned int pcibios_assign_all_busses(void);
  37 #else
  38 #define pcibios_assign_all_busses()     0
  39 #endif
  40 #define pcibios_scan_all_fns(a, b)      0
  41
  42 extern unsigned long pci_mem_start;
  43 #define PCIBIOS_MIN_IO          0x1000
  44 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  45
  46 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  47
  48 void pcibios_config_init(void);
  49 struct pci_bus * pcibios_scan_root(int bus);
  50 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
  51 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
  52
  53 void pcibios_set_master(struct pci_dev *dev);
  54 void pcibios_penalize_isa_irq(int irq, int active);
  55 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  56 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  57
  58 #include <linux/types.h>
  59 #include <linux/slab.h>
  60 #include <asm/scatterlist.h>
  61 #include <linux/string.h>
  62 #include <asm/page.h>
  63
  64 extern void pci_iommu_alloc(void);
  65 extern int iommu_setup(char *opt);
  66
  67 /* The PCI address space does equal the physical memory
  68  * address space.  The networking and block device layers use
  69  * this boolean for bounce buffer decisions
  70  *
  71  * On AMD64 it mostly equals, but we set it to zero if a hardware
  72  * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
  73  */
  74 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
  75
  76 #if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
  77
  78 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
  79         dma_addr_t ADDR_NAME;
  80 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
  81         __u32 LEN_NAME;
  82 #define pci_unmap_addr(PTR, ADDR_NAME)                  \
  83         ((PTR)->ADDR_NAME)
  84 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
  85         (((PTR)->ADDR_NAME) = (VAL))
  86 #define pci_unmap_len(PTR, LEN_NAME)                    \
  87         ((PTR)->LEN_NAME)
  88 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
  89         (((PTR)->LEN_NAME) = (VAL))
  90
  91 #else
  92 /* No IOMMU */
  93
  94 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  95 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  96 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  97 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  98 #define pci_unmap_len(PTR, LEN_NAME)            (0)
  99 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
 100
 101 #endif
 102
 103 #include <asm-generic/pci-dma-compat.h>
 104
 105 #ifdef CONFIG_PCI
 106 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 107                                         enum pci_dma_burst_strategy *strat,
 108                                         unsigned long *strategy_parameter)
 109 {
 110         *strat = PCI_DMA_BURST_INFINITY;
 111         *strategy_parameter = ~0UL;
 112 }
 113 #endif
 114
 115 #define HAVE_PCI_MMAP
 116 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 117                                enum pci_mmap_state mmap_state, int write_combine);
 118
 119 #endif /* __KERNEL__ */
 120
 121 /* generic pci stuff */
 122 #ifdef CONFIG_PCI
 123 #include <asm-generic/pci.h>
 124 #endif
 125
 126 #endif /* __x8664_PCI_H */