LXR linux/arch/sparc/include/asm/pci

   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
  19static 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
  40static 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
  60extern int pci_domain_nr(struct pci_bus *bus);
  61static 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
  72extern 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
  76static 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
  82extern 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 */
  88