arch/sparc/include/asm/pci_64.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __SPARC64_PCI_H
   3 #define __SPARC64_PCI_H
   4
   5 #ifdef __KERNEL__
   6
   7 #include <linux/dma-mapping.h>
   8
   9 /* Can be used to override the logic in pci_scan_bus for skipping
  10  * already-configured bus numbers - to be used for buggy BIOSes
  11  * or architectures with incomplete PCI setup by the loader.
  12  */
  13 #define pcibios_assign_all_busses()     0
  14
  15 #define PCIBIOS_MIN_IO          0UL
  16 #define PCIBIOS_MIN_MEM         0UL
  17
  18 #define PCI_IRQ_NONE            0xffffffff
  19
  20 /* The PCI address space does not equal the physical memory
  21  * address space.  The networking and block device layers use
  22  * this boolean for bounce buffer decisions.
  23  */
  24 #define PCI_DMA_BUS_IS_PHYS     (0)
  25
  26 /* PCI IOMMU mapping bypass support. */
  27
  28 /* PCI 64-bit addressing works for all slots on all controller
  29  * types on sparc64.  However, it requires that the device
  30  * can drive enough of the 64 bits.
  31  */
  32 #define PCI64_REQUIRED_MASK     (~(u64)0)
  33 #define PCI64_ADDR_BASE         0xfffc000000000000UL
  34
  35 /* Return the index of the PCI controller for device PDEV. */
  36
  37 int pci_domain_nr(struct pci_bus *bus);
  38 static inline int pci_proc_domain(struct pci_bus *bus)
  39 {
  40         return 1;
  41 }
  42
  43 /* Platform support for /proc/bus/pci/X/Y mmap()s. */
  44
  45 #define HAVE_PCI_MMAP
  46 #define arch_can_pci_mmap_io()  1
  47 #define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
  48 #define get_pci_unmapped_area get_fb_unmapped_area
  49
  50 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  51 {
  52         return PCI_IRQ_NONE;
  53 }
  54
  55 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
  56 #endif /* __KERNEL__ */
  57
  58 #endif /* __SPARC64_PCI_H */