arch/ia64/kernel/pci-dma.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Dynamic DMA mapping support.
   4  */
   5
   6 #include <linux/types.h>
   7 #include <linux/mm.h>
   8 #include <linux/string.h>
   9 #include <linux/pci.h>
  10 #include <linux/module.h>
  11 #include <linux/dmar.h>
  12 #include <asm/iommu.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/kernel.h>
  15 #include <asm/page.h>
  16
  17 int no_iommu __read_mostly;
  18 #ifdef CONFIG_IOMMU_DEBUG
  19 int force_iommu __read_mostly = 1;
  20 #else
  21 int force_iommu __read_mostly;
  22 #endif
  23
  24 static int __init pci_iommu_init(void)
  25 {
  26         if (iommu_detected)
  27                 intel_iommu_init();
  28
  29         return 0;
  30 }
  31
  32 /* Must execute after PCI subsystem */
  33 fs_initcall(pci_iommu_init);