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_penalize_isa_irq(int irq, int active)
  20 {
  21         /* We don't do dynamic PCI IRQ allocation */
  22 }
  23
  24 /* The PCI address space does not equal the physical memory
  25  * address space.  The networking and block device layers use
  26  * this boolean for bounce buffer decisions.
  27  */
  28 #define PCI_DMA_BUS_IS_PHYS     (0)
  29
  30 /* PCI IOMMU mapping bypass support. */
  31
  32 /* PCI 64-bit addressing works for all slots on all controller
  33  * types on sparc64.  However, it requires that the device
  34  * can drive enough of the 64 bits.
  35  */
  36 #define PCI64_REQUIRED_MASK     (~(u64)0)
  37 #define PCI64_ADDR_BASE         0xfffc000000000000UL
  38
  39 #ifdef CONFIG_PCI
  40 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  41                                         enum pci_dma_burst_strategy *strat,
  42                                         unsigned long *strategy_parameter)
  43 {
  44         unsigned long cacheline_size;
  45         u8 byte;
  46
  47         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
  48         if (byte == 0)
  49                 cacheline_size = 1024;
  50         else
  51                 cacheline_size = (int) byte * 4;
  52
  53         *strat = PCI_DMA_BURST_BOUNDARY;
  54         *strategy_parameter = cacheline_size;
  55 }
  56 #endif
  57
  58 /* Return the index of the PCI controller for device PDEV. */
  59
  60 extern int pci_domain_nr(struct pci_bus *bus);
  61 static inline int pci_proc_domain(struct pci_bus *bus)
  62 {
  63         return 1;
  64 }
  65
  66 /* Platform support for /proc/bus/pci/X/Y mmap()s. */
  67
  68 #define HAVE_PCI_MMAP
  69 #define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
  70 #define get_pci_unmapped_area get_fb_unmapped_area
  71
  72 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  73                                enum pci_mmap_state mmap_state,
  74                                int write_combine);
  75
  76 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  77 {
  78         return PCI_IRQ_NONE;
  79 }
  80
  81 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
  82 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
  83                                  const struct resource *rsrc,
  84                                  resource_size_t *start, resource_size_t *end);
  85 #endif /* __KERNEL__ */
  86
  87 #endif /* __SPARC64_PCI_H */