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[RFC,v8,21/28] hw/arm/smmuv3: Store the PASID table GPA in the translation config

Message ID 20210225105233.650545-22-eric.auger@redhat.com
State New
Headers show
Series vSMMUv3/pSMMUv3 2 stage VFIO integration | expand

Commit Message

Eric Auger Feb. 25, 2021, 10:52 a.m. UTC 
For VFIO integration we will need to pass the Context Descriptor (CD)
table GPA to the host. The CD table is also referred to as the PASID
table. Its GPA corresponds to the s1ctrptr field of the Stream Table
Entry. So let's decode and store it in the configuration structure.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/arm/smmuv3.c              | 1 +
 include/hw/arm/smmu-common.h | 1 +
 2 files changed, 2 insertions(+)
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Patch

diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index a998e237f0..ab0e1c5818 100644
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -358,6 +358,7 @@  static int decode_ste(SMMUv3State *s, SMMUTransCfg *cfg,
                       "SMMUv3 S1 stalling fault model not allowed yet\n");
         goto bad_ste;
     }
+    cfg->s1ctxptr = STE_CTXPTR(ste);
     return 0;
 
 bad_ste:
diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h
index 706be3c6d0..d578339935 100644
--- a/include/hw/arm/smmu-common.h
+++ b/include/hw/arm/smmu-common.h
@@ -76,6 +76,7 @@  typedef struct SMMUTransCfg {
     uint8_t tbi;               /* Top Byte Ignore */
     uint16_t asid;
     SMMUTransTableInfo tt[2];
+    dma_addr_t s1ctxptr;
     uint32_t iotlb_hits;       /* counts IOTLB hits for this asid */
     uint32_t iotlb_misses;     /* counts IOTLB misses for this asid */
 } SMMUTransCfg;