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iommu/arm-smmu: Use an atomic context when fastmap is set on GKI

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By default fastmap uses an atomic context.
On GKI builds fastmap is not supported, but we need to ensure that when
a client requests that fastmap be enabled on a GKI build that they still
use an atomic context.

Change-Id: I145e4679e973b10f666a0bef6ba104223fa5e7a9
Signed-off-by: Liam Mark <lmark@codeaurora.org>
This commit is contained in:
Liam Mark 2020-01-31 13:33:49 -08:00
commit 1babe09d54
1 changed files with 7 additions and 4 deletions
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15
drivers/iommu/arm-smmu.c
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@ -2645,16 +2645,19 @@ static int arm_smmu_setup_default_domain(struct device *dev,
if (ret)
str = "default";
if (!strcmp(str, "bypass"))
if (!strcmp(str, "bypass")) {
__arm_smmu_domain_set_attr(
domain, DOMAIN_ATTR_S1_BYPASS, &attr);
else if (!strcmp(str, "fastmap"))
__arm_smmu_domain_set_attr(
domain, DOMAIN_ATTR_FAST, &attr);
else if (!strcmp(str, "atomic"))
} else if (!strcmp(str, "fastmap")) {
/* Ensure DOMAIN_ATTR_ATOMIC is set for GKI */
__arm_smmu_domain_set_attr(
domain, DOMAIN_ATTR_ATOMIC, &attr);
else if (!strcmp(str, "disabled")) {
__arm_smmu_domain_set_attr(
domain, DOMAIN_ATTR_FAST, &attr);
} else if (!strcmp(str, "atomic")) {
__arm_smmu_domain_set_attr(
domain, DOMAIN_ATTR_ATOMIC, &attr);
} else if (!strcmp(str, "disabled")) {
/*
* Don't touch hw, and don't allocate irqs or other resources.
* Ensure the context bank is set to a valid value per dynamic