[RFC PATCH v4 29/38] iommu: ipmmu-vmsa: Add support for reserved regions

Koichiro Den
2026-01-18T13:55:52Z

Add support for reserved regions using iommu_dma_get_resv_regions().

Signed-off-by: Koichiro Den <den@valinux.co.jp>
---
drivers/iommu/ipmmu-vmsa.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 724d67ad5ef2..4a89d95db0f8 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -25,6 +25,8 @@
#include <linux/slab.h>
#include <linux/sys_soc.h>

+#include "dma-iommu.h"
+
#if defined(CONFIG_ARM) && !defined(CONFIG_IOMMU_DMA)
#include <asm/dma-iommu.h>
#else
@@ -888,6 +890,7 @@ static const struct iommu_ops ipmmu_ops = {
.device_group = IS_ENABLED(CONFIG_ARM) && !IS_ENABLED(CONFIG_IOMMU_DMA)
? generic_device_group : generic_single_device_group,
.of_xlate = ipmmu_of_xlate,
+ .get_resv_regions = iommu_dma_get_resv_regions,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = ipmmu_attach_device,
.map_pages = ipmmu_map,
--
2.51.0