With nested stage support, soon we will need to invalidate
S1 contexts and ranges tagged with an unmanaged asid, this
latter being managed by the guest. So let's introduce 2 helpers
that allow to invalidate with externally managed ASIDs
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 35 +++++++++++++++++----
1 file changed, 29 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 805acdc18a3a..fdecc9f17b36 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -1697,9 +1697,9 @@ static int arm_smmu_atc_inv_domain(struct arm_smmu_domain
*smmu_domain,
}
/* IO_PGTABLE API */
-static void arm_smmu_tlb_inv_context(void *cookie)
+static void __arm_smmu_tlb_inv_context(struct arm_smmu_domain *smmu_domain,
+ int ext_asid)
{
- struct arm_smmu_domain *smmu_domain = cookie;
struct arm_smmu_device *smmu = smmu_domain->smmu;
struct arm_smmu_cmdq_ent cmd;
@@ -1710,7 +1710,11 @@ static void arm_smmu_tlb_inv_context(void *cookie)
* insertion to guarantee those are observed before the TLBI. Do be
* careful, 007.
*/
- if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) {
+ if (ext_asid >= 0) { /* guest stage 1 invalidation */
+ cmd.opcode = CMDQ_OP_TLBI_NH_ASID;
+ cmd.tlbi.asid = ext_asid;
+ cmd.tlbi.vmid = smmu_domain->s2_cfg.vmid;
+ } else if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) {
arm_smmu_tlb_inv_asid(smmu, smmu_domain->s1_cfg.cd.asid);
} else {
cmd.opcode = CMDQ_OP_TLBI_S12_VMALL;
@@ -1721,9 +1725,17 @@ static void arm_smmu_tlb_inv_context(void *cookie)
arm_smmu_atc_inv_domain(smmu_domain, 0, 0, 0);
}
-static void arm_smmu_tlb_inv_range(unsigned long iova, size_t size,
+static void arm_smmu_tlb_inv_context(void *cookie)
+{
+ struct arm_smmu_domain *smmu_domain = cookie;
+
+ __arm_smmu_tlb_inv_context(smmu_domain, -1);
+}
+
+static void __arm_smmu_tlb_inv_range(unsigned long iova, size_t size,
size_t granule, bool leaf,
- struct arm_smmu_domain *smmu_domain)
+ struct arm_smmu_domain *smmu_domain,
+ int ext_asid)
{
struct arm_smmu_device *smmu = smmu_domain->smmu;
unsigned long start = iova, end = iova + size, num_pages = 0, tg = 0;
@@ -1738,7 +1750,11 @@ static void arm_smmu_tlb_inv_range(unsigned long iova,
size_t size,
if (!size)
return;
- if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) {
+ if (ext_asid >= 0) { /* guest stage 1 invalidation */
+ cmd.opcode = CMDQ_OP_TLBI_NH_VA;
+ cmd.tlbi.asid = ext_asid;
+ cmd.tlbi.vmid = smmu_domain->s2_cfg.vmid;
+ } else if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) {
cmd.opcode = CMDQ_OP_TLBI_NH_VA;
cmd.tlbi.asid = smmu_domain->s1_cfg.cd.asid;
} else {
@@ -1798,6 +1814,13 @@ static void arm_smmu_tlb_inv_range(unsigned long iova,
size_t size,
arm_smmu_atc_inv_domain(smmu_domain, 0, start, size);
}
+static void arm_smmu_tlb_inv_range(unsigned long iova, size_t size,
+ size_t granule, bool leaf,
+ struct arm_smmu_domain *smmu_domain)
+{
+ __arm_smmu_tlb_inv_range(iova, size, granule, leaf, smmu_domain, -1);
+}
+
static void arm_smmu_tlb_inv_page_nosync(struct iommu_iotlb_gather *gather,
unsigned long iova, size_t granule,
void *cookie)
--
2.21.3
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