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