iommu/arm-smmu-v3: Refactor arm_smmu_init_bypass_stes() to force bypass
authorShameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Wed, 15 Jun 2022 10:10:42 +0000 (11:10 +0100)
committerJoerg Roedel <jroedel@suse.de>
Wed, 6 Jul 2022 10:51:11 +0000 (12:51 +0200)
commit6c998abb1ea54b3d83420f68ce382354a30f2238
tree1670d6ea3e5faab3ab7f2fca0b9281e1c128652c
parent04e2afd1a71c98e8ad84e5e6bf8352c3de6e6eaf
iommu/arm-smmu-v3: Refactor arm_smmu_init_bypass_stes() to force bypass

By default, disable_bypass flag is set and any dev without
an iommu domain installs STE with CFG_ABORT during
arm_smmu_init_bypass_stes(). Introduce a "force" flag and
move the STE update logic to arm_smmu_init_bypass_stes()
so that we can force it to install CFG_BYPASS STE for specific
SIDs.

This will be useful in a follow-up patch to install bypass
for IORT RMR SIDs.

Tested-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20220615101044.1972-8-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c