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_set_master(struct pci_dev *dev)
 20{
 21	/* No special bus mastering setup handling */
 22}
 23
 24static 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 IOMMU mapping bypass support. */
 36
 37/* PCI 64-bit addressing works for all slots on all controller
 38 * types on sparc64.  However, it requires that the device
 39 * can drive enough of the 64 bits.
 40 */
 41#define PCI64_REQUIRED_MASK	(~(u64)0)
 42#define PCI64_ADDR_BASE		0xfffc000000000000UL
 43
 44#ifdef CONFIG_PCI
 45static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 46					enum pci_dma_burst_strategy *strat,
 47					unsigned long *strategy_parameter)
 48{
 49	unsigned long cacheline_size;
 50	u8 byte;
 51
 52	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
 53	if (byte == 0)
 54		cacheline_size = 1024;
 55	else
 56		cacheline_size = (int) byte * 4;
 57
 58	*strat = PCI_DMA_BURST_BOUNDARY;
 59	*strategy_parameter = cacheline_size;
 60}
 61#endif
 62
 63/* Return the index of the PCI controller for device PDEV. */
 64
 65extern int pci_domain_nr(struct pci_bus *bus);
 66static inline int pci_proc_domain(struct pci_bus *bus)
 67{
 68	return 1;
 69}
 70
 71/* Platform support for /proc/bus/pci/X/Y mmap()s. */
 72
 73#define HAVE_PCI_MMAP
 74#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
 75#define get_pci_unmapped_area get_fb_unmapped_area
 76
 77extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 78			       enum pci_mmap_state mmap_state,
 79			       int write_combine);
 80
 81extern void
 82pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
 83			struct resource *res);
 84
 85extern void
 86pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 87			struct pci_bus_region *region);
 88
 89static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 90{
 91	return PCI_IRQ_NONE;
 92}
 93
 94#define HAVE_ARCH_PCI_RESOURCE_TO_USER
 95extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 96				 const struct resource *rsrc,
 97				 resource_size_t *start, resource_size_t *end);
 98#endif /* __KERNEL__ */
 99
100#endif /* __SPARC64_PCI_H */