include/asm-x86_64/pci.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 #ifdef CONFIG_CALGARY_IOMMU
  14 static inline void* pci_iommu(struct pci_bus *bus)
  15 {
  16         struct pci_sysdata *sd = bus->sysdata;
  17         return sd->iommu;
  18 }
  19
  20 static inline void set_pci_iommu(struct pci_bus *bus, void *val)
  21 {
  22         struct pci_sysdata *sd = bus->sysdata;
  23         sd->iommu = val;
  24 }
  25 #endif /* CONFIG_CALGARY_IOMMU */
  26
  27 #include <linux/mm.h> /* for struct page */
  28
  29 /* Can be used to override the logic in pci_scan_bus for skipping
  30    already-configured bus numbers - to be used for buggy BIOSes
  31    or architectures with incomplete PCI setup by the loader */
  32
  33 #ifdef CONFIG_PCI
  34 extern unsigned int pcibios_assign_all_busses(void);
  35 #else
  36 #define pcibios_assign_all_busses()     0
  37 #endif
  38 #define pcibios_scan_all_fns(a, b)      0
  39
  40 extern unsigned long pci_mem_start;
  41 #define PCIBIOS_MIN_IO          0x1000
  42 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  43
  44 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  45
  46 void pcibios_config_init(void);
  47 struct pci_bus * pcibios_scan_root(int bus);
  48 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
  49 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
  50
  51 void pcibios_set_master(struct pci_dev *dev);
  52 void pcibios_penalize_isa_irq(int irq, int active);
  53 struct irq_routing_table *pcibios_get_irq_routing_table(void);
  54 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
  55
  56 #include <linux/types.h>
  57 #include <linux/slab.h>
  58 #include <asm/scatterlist.h>
  59 #include <linux/string.h>
  60 #include <asm/page.h>
  61
  62 extern void pci_iommu_alloc(void);
  63 extern int iommu_setup(char *opt);
  64
  65 /* The PCI address space does equal the physical memory
  66  * address space.  The networking and block device layers use
  67  * this boolean for bounce buffer decisions
  68  *
  69  * On AMD64 it mostly equals, but we set it to zero if a hardware
  70  * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
  71  */
  72 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
  73
  74 #if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
  75
  76 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
  77         dma_addr_t ADDR_NAME;
  78 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
  79         __u32 LEN_NAME;
  80 #define pci_unmap_addr(PTR, ADDR_NAME)                  \
  81         ((PTR)->ADDR_NAME)
  82 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
  83         (((PTR)->ADDR_NAME) = (VAL))
  84 #define pci_unmap_len(PTR, LEN_NAME)                    \
  85         ((PTR)->LEN_NAME)
  86 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
  87         (((PTR)->LEN_NAME) = (VAL))
  88
  89 #else
  90 /* No IOMMU */
  91
  92 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  93 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  94 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  95 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  96 #define pci_unmap_len(PTR, LEN_NAME)            (0)
  97 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
  98
  99 #endif
 100
 101 #include <asm-generic/pci-dma-compat.h>
 102
 103 #ifdef CONFIG_PCI
 104 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 105                                         enum pci_dma_burst_strategy *strat,
 106                                         unsigned long *strategy_parameter)
 107 {
 108         *strat = PCI_DMA_BURST_INFINITY;
 109         *strategy_parameter = ~0UL;
 110 }
 111 #endif
 112
 113 #define HAVE_PCI_MMAP
 114 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 115                                enum pci_mmap_state mmap_state, int write_combine);
 116
 117 #endif /* __KERNEL__ */
 118
 119 /* generic pci stuff */
 120 #ifdef CONFIG_PCI
 121 #include <asm-generic/pci.h>
 122 #endif
 123
 124 #endif /* __x8664_PCI_H */