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