From 94f9eebd1f2da64287a27e6a94efe88edebb383c Mon Sep 17 00:00:00 2001
From: Jan-Peter Larsson <jan-peter.larsson@arm.com>
Date: Thu, 15 Aug 2019 12:49:16 +0100
Subject: dev-arm: Implement invalidateASID in SMMUv3 WalkCache
This patch fixes a bug where issuing a invalidate-by-ASID command
(CMD_TLBI_NH_ASID) to the SMMU would cause Gem5 to crash.
Change-Id: I5b8343a17e43762fe3917560ae401a20be1e05b8
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20259
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
---
src/dev/arm/smmu_v3_caches.cc | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
(limited to 'src/dev/arm')
diff --git a/src/dev/arm/smmu_v3_caches.cc b/src/dev/arm/smmu_v3_caches.cc
index d92c54480..f6384b466 100644
--- a/src/dev/arm/smmu_v3_caches.cc
+++ b/src/dev/arm/smmu_v3_caches.cc
@@ -1122,7 +1122,16 @@ WalkCache::invalidateVAA(Addr va, uint16_t vmid, const bool leaf_only)
void
WalkCache::invalidateASID(uint16_t asid, uint16_t vmid)
{
- panic("%s unimplemented\n", __func__);
+ for (size_t s = 0; s < sets.size(); s++) {
+ Set &set = sets[s];
+
+ for (size_t i = 0; i < set.size(); i++) {
+ Entry &e = set[i];
+
+ if (e.asid==asid && e.vmid==vmid)
+ e.valid = false;
+ }
+ }
}
void
--
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