arch/sparc/include/asm/pci_64.h

   1 #ifndef __SPARC64_PCI_H
   2 #define __SPARC64_PCI_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/dma-mapping.h>
   7
   8 /* Can be used to override the logic in pci_scan_bus for skipping
   9  * already-configured bus numbers - to be used for buggy BIOSes
  10  * or architectures with incomplete PCI setup by the loader.
  11  */
  12 #define pcibios_assign_all_busses()     0
  13 #define pcibios_scan_all_fns(a, b)      0
  14
  15 #define PCIBIOS_MIN_IO          0UL
  16 #define PCIBIOS_MIN_MEM         0UL
  17
  18 #define PCI_IRQ_NONE            0xffffffff
  19
  20 #define PCI_CACHE_LINE_BYTES    64
  21
  22 static inline void pcibios_set_master(struct pci_dev *dev)
  23 {
  24         /* No special bus mastering setup handling */
  25 }
  26
  27 static inline void pcibios_penalize_isa_irq(int irq, int active)
  28 {
  29         /* We don't do dynamic PCI IRQ allocation */
  30 }
  31
  32 /* The PCI address space does not equal the physical memory
  33  * address space.  The networking and block device layers use
  34  * this boolean for bounce buffer decisions.
  35  */
  36 #define PCI_DMA_BUS_IS_PHYS     (0)
  37
  38 /* pci_unmap_{single,page} is not a nop, thus... */
  39 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
  40         dma_addr_t ADDR_NAME;
  41 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
  42         __u32 LEN_NAME;
  43 #define pci_unmap_addr(PTR, ADDR_NAME)                  \
  44         ((PTR)->ADDR_NAME)
  45 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
  46         (((PTR)->ADDR_NAME) = (VAL))
  47 #define pci_unmap_len(PTR, LEN_NAME)                    \
  48         ((PTR)->LEN_NAME)
  49 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
  50         (((PTR)->LEN_NAME) = (VAL))
  51
  52 /* PCI IOMMU mapping bypass support. */
  53
  54 /* PCI 64-bit addressing works for all slots on all controller
  55  * types on sparc64.  However, it requires that the device
  56  * can drive enough of the 64 bits.
  57  */
  58 #define PCI64_REQUIRED_MASK     (~(dma64_addr_t)0)
  59 #define PCI64_ADDR_BASE         0xfffc000000000000UL
  60
  61 #ifdef CONFIG_PCI
  62 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  63                                         enum pci_dma_burst_strategy *strat,
  64                                         unsigned long *strategy_parameter)
  65 {
  66         unsigned long cacheline_size;
  67         u8 byte;
  68
  69         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
  70         if (byte == 0)
  71                 cacheline_size = 1024;
  72         else
  73                 cacheline_size = (int) byte * 4;
  74
  75         *strat = PCI_DMA_BURST_BOUNDARY;
  76         *strategy_parameter = cacheline_size;
  77 }
  78 #endif
  79
  80 /* Return the index of the PCI controller for device PDEV. */
  81
  82 extern int pci_domain_nr(struct pci_bus *bus);
  83 static inline int pci_proc_domain(struct pci_bus *bus)
  84 {
  85         return 1;
  86 }
  87
  88 /* Platform support for /proc/bus/pci/X/Y mmap()s. */
  89
  90 #define HAVE_PCI_MMAP
  91 #define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
  92 #define get_pci_unmapped_area get_fb_unmapped_area
  93
  94 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  95                                enum pci_mmap_state mmap_state,
  96                                int write_combine);
  97
  98 extern void
  99 pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
 100                         struct resource *res);
 101
 102 extern void
 103 pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 104                         struct pci_bus_region *region);
 105
 106 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 107 {
 108         return PCI_IRQ_NONE;
 109 }
 110
 111 struct device_node;
 112 extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
 113
 114 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 115 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 116                                  const struct resource *rsrc,
 117                                  resource_size_t *start, resource_size_t *end);
 118 #endif /* __KERNEL__ */
 119
 120 #endif /* __SPARC64_PCI_H */