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[PATCH v5 9/9] xen/arm: Map ITS doorbell register to IOMMU page tables.
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Wed, 4 Oct 2023 10:55:53 -0400
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- Cc: Rahul Singh <rahul.singh@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Wed, 04 Oct 2023 15:14:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
From: Rahul Singh <rahul.singh@xxxxxxx>
Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx>
---
v4->v5:
* new patch
---
xen/arch/arm/vgic-v3-its.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/xen/arch/arm/vgic-v3-its.c b/xen/arch/arm/vgic-v3-its.c
index 05429030b539..df8f045198a3 100644
--- a/xen/arch/arm/vgic-v3-its.c
+++ b/xen/arch/arm/vgic-v3-its.c
@@ -682,6 +682,18 @@ static int its_handle_mapd(struct virt_its *its, uint64_t
*cmdptr)
BIT(size, UL), valid);
if ( ret && valid )
return ret;
+
+ if ( is_iommu_enabled(its->d) ) {
+ ret = map_mmio_regions(its->d, gaddr_to_gfn(its->doorbell_address),
+ PFN_UP(ITS_DOORBELL_OFFSET),
+ maddr_to_mfn(its->doorbell_address));
+ if ( ret < 0 )
+ {
+ printk(XENLOG_ERR "GICv3: Map ITS translation register d%d
failed.\n",
+ its->d->domain_id);
+ return ret;
+ }
+ }
}
spin_lock(&its->its_lock);
--
2.42.0
|
