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
  15 struct 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
  38 extern 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 char *pci_get_legacy_mem(struct pci_bus *bus);
  43 int pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
  44 int pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
  45
  46 struct 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
  59 extern struct pci_ops pci_root_ops;
  60
  61 static 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
  67 static 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 #endif /* _ASM_IA64_PCI_H */