Compute the starting level on CD decoding and store it into SMMUTransTableInfo. We will need this information on IOTLB lookup so let's avoid to recompute it each time.
Signed-off-by: Eric Auger <eric.au...@redhat.com> --- include/hw/arm/smmu-common.h | 1 + hw/arm/smmu-common.c | 2 +- hw/arm/smmuv3.c | 8 ++++++-- hw/arm/trace-events | 2 +- 4 files changed, 9 insertions(+), 4 deletions(-) diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h index f6ee78e16c..676e53c086 100644 --- a/include/hw/arm/smmu-common.h +++ b/include/hw/arm/smmu-common.h @@ -50,6 +50,7 @@ typedef struct SMMUTransTableInfo { uint64_t ttb; /* TT base address */ uint8_t tsz; /* input range, ie. 2^(64 -tsz)*/ uint8_t granule_sz; /* granule page shift */ + uint8_t starting_level; /* starting level */ } SMMUTransTableInfo; struct SMMUTLBEntry { diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c index aa88b62efb..c2ed8346fb 100644 --- a/hw/arm/smmu-common.c +++ b/hw/arm/smmu-common.c @@ -224,7 +224,7 @@ static int smmu_ptw_64(SMMUTransCfg *cfg, granule_sz = tt->granule_sz; stride = granule_sz - 3; inputsize = 64 - tt->tsz; - level = 4 - (inputsize - 4) / stride; + level = tt->starting_level; indexmask = (1ULL << (inputsize - (stride * (4 - level)))) - 1; baseaddr = extract64(tt->ttb, 0, 48); baseaddr &= ~indexmask; diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index db74d27add..12d3e972d6 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -482,7 +482,7 @@ static int decode_cd(SMMUTransCfg *cfg, CD *cd, SMMUEventInfo *event) /* decode data dependent on TT */ for (i = 0; i <= 1; i++) { - int tg, tsz; + int tg, tsz, input_size, stride; SMMUTransTableInfo *tt = &cfg->tt[i]; cfg->tt[i].disabled = CD_EPD(cd, i); @@ -502,11 +502,15 @@ static int decode_cd(SMMUTransCfg *cfg, CD *cd, SMMUEventInfo *event) } tt->tsz = tsz; + input_size = 64 - tt->tsz; + stride = tt->granule_sz - 3; tt->ttb = CD_TTB(cd, i); if (tt->ttb & ~(MAKE_64BIT_MASK(0, cfg->oas))) { goto bad_cd; } - trace_smmuv3_decode_cd_tt(i, tt->tsz, tt->ttb, tt->granule_sz); + tt->starting_level = 4 - (input_size - 4) / stride; + trace_smmuv3_decode_cd_tt(i, tt->tsz, tt->ttb, + tt->granule_sz, tt->starting_level); } event->record_trans_faults = CD_R(cd); diff --git a/hw/arm/trace-events b/hw/arm/trace-events index b808a1bfc1..7263b9c586 100644 --- a/hw/arm/trace-events +++ b/hw/arm/trace-events @@ -39,7 +39,7 @@ smmuv3_translate_abort(const char *n, uint16_t sid, uint64_t addr, bool is_write smmuv3_translate_success(const char *n, uint16_t sid, uint64_t iova, uint64_t translated, int perm) "%s sid=%d iova=0x%"PRIx64" translated=0x%"PRIx64" perm=0x%x" smmuv3_get_cd(uint64_t addr) "CD addr: 0x%"PRIx64 smmuv3_decode_cd(uint32_t oas) "oas=%d" -smmuv3_decode_cd_tt(int i, uint32_t tsz, uint64_t ttb, uint32_t granule_sz) "TT[%d]:tsz:%d ttb:0x%"PRIx64" granule_sz:%d" +smmuv3_decode_cd_tt(int i, uint32_t tsz, uint64_t ttb, uint32_t granule_sz, uint8_t starting_level) "TT[%d]:tsz:%d ttb:0x%"PRIx64" granule_sz:%d starting_level=%d" smmuv3_cmdq_cfgi_ste(int streamid) "streamid =%d" smmuv3_cmdq_cfgi_ste_range(int start, int end) "start=0x%d - end=0x%d" smmuv3_cmdq_cfgi_cd(uint32_t sid) "streamid = %d" -- 2.20.1