From 44610a55a43c1adb4e2d4dae07943ef8e835fdb9 Mon Sep 17 00:00:00 2001 Message-Id: <44610a55a43c1adb4e2d4dae07943ef8e835fdb9.1688725585.git.rahul.singh@arm.com> In-Reply-To: <013124b496574c1eda10e04f119d2d227f101e25.1688725585.git.rahul.singh@arm.com> References: <013124b496574c1eda10e04f119d2d227f101e25.1688725585.git.rahul.singh@arm.com> From: Rahul Singh Date: Fri, 7 Jul 2023 11:25:33 +0100 Subject: [PATCH 3/3] xen/arm: Map ITS dorrbell register to IOMMU page tables. Signed-off-by: Rahul Singh Change-Id: Id19373d65b94583c5a9f1b95854e6b2790dc695c --- 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 299b384250..8227a7a74b 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); -- 2.25.1