diff options
| author | Zenghui Yu <yuzenghui@huawei.com> | 2021-04-02 18:04:49 +0800 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-04-12 11:06:24 +0100 |
| commit | 017a913af4dff47ac5e62be613b9f8b88fc8fa96 (patch) | |
| tree | bffa550d15d833db8ef8f6c081b793afc0596660 /hw | |
| parent | 0c38f607836af40921ea2b58676b7c4a9fe33bef (diff) | |
| download | qemu-017a913af4dff47ac5e62be613b9f8b88fc8fa96.zip | |
hw/arm/smmuv3: Emulate CFGI_STE_RANGE for an aligned range of StreamIDs
In emulation of the CFGI_STE_RANGE command, we now take StreamID as the
start of the invalidation range, regardless of whatever the Range is,
whilst the spec clearly states that
- "Invalidation is performed for an *aligned* range of 2^(Range+1)
StreamIDs."
- "The bottom Range+1 bits of the StreamID parameter are IGNORED,
aligning the range to its size."
Take CFGI_ALL (where Range == 31) as an example, if there are some random
bits in the StreamID field, we'll fail to perform the full invalidation but
get a strange range (e.g., SMMUSIDRange={.start=1, .end=0}) instead. Rework
the emulation a bit to get rid of the discrepancy with the spec.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20210402100449.528-1-yuzenghui@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/arm/smmuv3.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 3b87324ce2..8705612535 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -980,16 +980,20 @@ static int smmuv3_cmdq_consume(SMMUv3State *s) } case SMMU_CMD_CFGI_STE_RANGE: /* same as SMMU_CMD_CFGI_ALL */ { - uint32_t start = CMD_SID(&cmd); + uint32_t sid = CMD_SID(&cmd), mask; uint8_t range = CMD_STE_RANGE(&cmd); - uint64_t end = start + (1ULL << (range + 1)) - 1; - SMMUSIDRange sid_range = {start, end}; + SMMUSIDRange sid_range; if (CMD_SSEC(&cmd)) { cmd_error = SMMU_CERROR_ILL; break; } - trace_smmuv3_cmdq_cfgi_ste_range(start, end); + + mask = (1ULL << (range + 1)) - 1; + sid_range.start = sid & ~mask; + sid_range.end = sid_range.start + mask; + + trace_smmuv3_cmdq_cfgi_ste_range(sid_range.start, sid_range.end); g_hash_table_foreach_remove(bs->configs, smmuv3_invalidate_ste, &sid_range); break; |