v4.19.13 snapshot.
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
new file mode 100644
index 0000000..780e874
--- /dev/null
+++ b/arch/ia64/include/asm/pci.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_PCI_H
+#define _ASM_IA64_PCI_H
+
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/scatterlist.h>
+
+#include <asm/io.h>
+#include <asm/hw_irq.h>
+
+struct pci_vector_struct {
+ __u16 segment; /* PCI Segment number */
+ __u16 bus; /* PCI Bus number */
+ __u32 pci_id; /* ACPI split 16 bits device, 16 bits function (see section 6.1.1) */
+ __u8 pin; /* PCI PIN (0 = A, 1 = B, 2 = C, 3 = D) */
+ __u32 irq; /* IRQ assigned */
+};
+
+/*
+ * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
+ * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
+ * loader.
+ */
+#define pcibios_assign_all_busses() 0
+
+#define PCIBIOS_MIN_IO 0x1000
+#define PCIBIOS_MIN_MEM 0x10000000
+
+#define HAVE_PCI_MMAP
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE
+#define arch_can_pci_mmap_wc() 1
+
+#define HAVE_PCI_LEGACY
+extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
+ struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state);
+
+#define pci_get_legacy_mem platform_pci_get_legacy_mem
+#define pci_legacy_read platform_pci_legacy_read
+#define pci_legacy_write platform_pci_legacy_write
+
+struct pci_controller {
+ struct acpi_device *companion;
+ void *iommu;
+ int segment;
+ int node; /* nearest node with memory or NUMA_NO_NODE for global allocation */
+
+ void *platform_data;
+};
+
+
+#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
+#define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
+
+extern struct pci_ops pci_root_ops;
+
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ return (pci_domain_nr(bus) != 0);
+}
+
+#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+ return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
+}
+
+#ifdef CONFIG_INTEL_IOMMU
+extern void pci_iommu_alloc(void);
+#endif
+#endif /* _ASM_IA64_PCI_H */