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