LXR linux/arch/ia64/include/asm/pci.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_IA64_PCI_H
   3#define _ASM_IA64_PCI_H
   4
   5#include <linux/mm.h>
   6#include <linux/slab.h>
   7#include <linux/spinlock.h>
   8#include <linux/string.h>
   9#include <linux/types.h>
  10#include <linux/scatterlist.h>
  11
  12#include <asm/io.h>
  13#include <asm/hw_irq.h>
  14
  15struct pci_vector_struct {
  16        __u16 segment;  /* PCI Segment number */
  17        __u16 bus;      /* PCI Bus number */
  18        __u32 pci_id;   /* ACPI split 16 bits device, 16 bits function (see section 6.1.1) */
  19        __u8 pin;       /* PCI PIN (0 = A, 1 = B, 2 = C, 3 = D) */
  20        __u32 irq;      /* IRQ assigned */
  21};
  22
  23/*
  24 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
  25 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
  26 * loader.
  27 */
  28#define pcibios_assign_all_busses()     0
  29
  30#define PCIBIOS_MIN_IO          0x1000
  31#define PCIBIOS_MIN_MEM         0x10000000
  32
  33#define HAVE_PCI_MMAP
  34#define ARCH_GENERIC_PCI_MMAP_RESOURCE
  35#define arch_can_pci_mmap_wc()  1
  36
  37#define HAVE_PCI_LEGACY
  38extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  39                                      struct vm_area_struct *vma,
  40                                      enum pci_mmap_state mmap_state);
  41
  42#define pci_get_legacy_mem platform_pci_get_legacy_mem
  43#define pci_legacy_read platform_pci_legacy_read
  44#define pci_legacy_write platform_pci_legacy_write
  45
  46struct pci_controller {
  47        struct acpi_device *companion;
  48        void *iommu;
  49        int segment;
  50        int node;               /* nearest node with memory or NUMA_NO_NODE for global allocation */
  51
  52        void *platform_data;
  53};
  54
  55
  56#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
  57#define pci_domain_nr(busdev)    (PCI_CONTROLLER(busdev)->segment)
  58
  59extern struct pci_ops pci_root_ops;
  60
  61static inline int pci_proc_domain(struct pci_bus *bus)
  62{
  63        return (pci_domain_nr(bus) != 0);
  64}
  65
  66#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
  67static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  68{
  69        return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
  70}
  71
  72#ifdef CONFIG_INTEL_IOMMU
  73extern void pci_iommu_alloc(void);
  74#endif
  75#endif /* _ASM_IA64_PCI_H */
  76