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
  19#define PCI_CACHE_LINE_BYTES    64
  20
  21static inline void pcibios_set_master(struct pci_dev *dev)
  22{
  23        /* No special bus mastering setup handling */
  24}
  25
  26static 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
  61static 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
  81extern int pci_domain_nr(struct pci_bus *bus);
  82static 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
  93extern 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
  97extern void
  98pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
  99                        struct resource *res);
 100
 101extern void
 102pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 103                        struct pci_bus_region *region);
 104
 105static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 106{
 107        return PCI_IRQ_NONE;
 108}
 109
 110struct device_node;
 111extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
 112
 113#define HAVE_ARCH_PCI_RESOURCE_TO_USER
 114extern 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 */
 120