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hw/arm/smmuv3: Cache/invalidate config data

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Let's cache config data to avoid fetching and parsing STE/CD
structures on each translation. We invalidate them on data structure
invalidation commands.

We put in place a per-smmu mutex to protect the config cache. This
will be useful too to protect the IOTLB cache. The caches can be
accessed without BQL, ie. in IO dataplane. The same kind of mutex was
put in place in the intel viommu.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1529653501-15358-3-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Eric Auger 2018-06-26 17:50:42 +01:00 • committed by Peter Maydell
parent 9122bea986
commit 32cfd7f39e
5 changed files with 164 additions and 7 deletions
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5
include/hw/arm/smmu-common.h
View file

@ -75,6 +75,8 @@ typedef struct SMMUDevice {
int devfn;
IOMMUMemoryRegion iommu;
AddressSpace as;
uint32_t cfg_cache_hits;
uint32_t cfg_cache_misses;
} SMMUDevice;
typedef struct SMMUNotifierNode {
@ -142,4 +144,7 @@ int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
*/
SMMUTransTableInfo *select_tt(SMMUTransCfg *cfg, dma_addr_t iova);
/* Return the iommu mr associated to @sid, or NULL if none */
IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid);
#endif /* HW_ARM_SMMU_COMMON */

1
include/hw/arm/smmuv3.h
View file

@ -59,6 +59,7 @@ typedef struct SMMUv3State {
SMMUQueue eventq, cmdq;
qemu_irq irq[4];
QemuMutex mutex;
} SMMUv3State;
typedef enum {