Rather than publishing one command at a time when invalidating a context
descriptor, batch the commands for all SIDs in the domain.
Signed-off-by: Jean-Philippe Brucker <jean-phili...@linaro.org>
---
drivers/iommu/arm-smmu-v3.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 6b76df37025e..11123fbf22a5 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1487,8 +1487,10 @@ static void arm_smmu_sync_cd(struct arm_smmu_domain
*smmu_domain,
int ssid, bool leaf)
{
size_t i;
+ int cmdn = 0;
unsigned long flags;
struct arm_smmu_master *master;
+ u64 cmds[CMDQ_BATCH_ENTRIES * CMDQ_ENT_DWORDS];
struct arm_smmu_device *smmu = smmu_domain->smmu;
struct arm_smmu_cmdq_ent cmd = {
.opcode = CMDQ_OP_CFGI_CD,
@@ -1501,13 +1503,19 @@ static void arm_smmu_sync_cd(struct arm_smmu_domain
*smmu_domain,
spin_lock_irqsave(&smmu_domain->devices_lock, flags);
list_for_each_entry(master, &smmu_domain->devices, domain_head) {
for (i = 0; i < master->num_sids; i++) {
+ if (cmdn == CMDQ_BATCH_ENTRIES) {
+ arm_smmu_cmdq_issue_cmdlist(smmu, cmds, cmdn,
false);
+ cmdn = 0;
+ }
+
cmd.cfgi.sid = master->sids[i];
- arm_smmu_cmdq_issue_cmd(smmu, &cmd);
+ arm_smmu_cmdq_build_cmd(&cmds[cmdn * CMDQ_ENT_DWORDS],
&cmd);
+ cmdn++;
}
}
spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
- arm_smmu_cmdq_issue_sync(smmu);
+ arm_smmu_cmdq_issue_cmdlist(smmu, cmds, cmdn, true);
}
static int arm_smmu_alloc_cd_leaf_table(struct arm_smmu_device *smmu,
--
2.25.0
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