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hw/arm/smmuv3: Support HAD and advertise SMMUv3.1 support

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HAD is a mandatory features with SMMUv3.1 if S1P is set, which is
our case. Other 3.1 mandatory features come with S2P which we don't
have.

So let's support HAD and advertise SMMUv3.1 support in AIDR.

HAD support allows the CD to disable hierarchical attributes, ie.
if the HAD0/1 bit is set, the APTable field of table descriptors
walked through TTB0/1 is ignored.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200728150815.11446-11-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Eric Auger 2020-07-28 17:08:14 +02:00 • committed by Peter Maydell
parent 5888f0ad12
commit e7c3b9d9a0
5 changed files with 10 additions and 3 deletions
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2
hw/arm/smmu-common.c
View file

@ -316,7 +316,7 @@ static int smmu_ptw_64(SMMUTransCfg *cfg,
if (is_table_pte(pte, level)) {
ap = PTE_APTABLE(pte);
if (is_permission_fault(ap, perm)) {
if (is_permission_fault(ap, perm) && !tt->had) {
info->type = SMMU_PTW_ERR_PERMISSION;
goto error;
}