iommu/arm-smmu: Get associated RMR info and install bypass SMR

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Check if there is any RMR info associated with the devices behind
the SMMU and if any, install bypass SMRs for them. This is to
keep any ongoing traffic associated with these devices alive
when we enable/reset SMMU during probe().

Signed-off-by: Jon Nettleton <jon@solid-run.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Tested-by: Steven Price <steven.price@arm.com>
Tested-by: Laurentiu Tudor <laurentiu.tudor@nxp.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/20220615101044.1972-10-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Jon Nettleton 2022-06-15 11:10:44 +01:00 • committed by Joerg Roedel

parent 9bdbdaa3c4

commit 0bec05574d

1 changed files with 52 additions and 0 deletions

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drivers/iommu/arm/arm-smmu/arm-smmu.c

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