| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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); |