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hw/arm/smmu: Consolidate ASID and VMID types

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ASID and VMID used to be uint16_t in the translation config, however,
in other contexts they can be int as -1 in case of TLB invalidation,
to represent all (don’t care).
When stage-2 was added asid was set to -1 in stage-2 and vmid to -1
in stage-1 configs. However, that meant they were set as (65536),
this was not an issue as nesting was not supported and no
commands/lookup uses both.

With nesting, it’s critical to get this right as translation must be
tagged correctly with ASID/VMID, and with ASID=-1 meaning stage-2.
Represent ASID/VMID everywhere as int.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20240715084519.1189624-7-smostafa@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Mostafa Saleh 2024-07-15 08:45:06 +00:00 • committed by Peter Maydell
parent a9e3f4c1eb
commit d883822641
4 changed files with 23 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

14
include/hw/arm/smmu-common.h
View file

@ -84,7 +84,7 @@ typedef struct SMMUS2Cfg {
bool record_faults; /* Record fault events (S2R) */
uint8_t granule_sz; /* Granule page shift (based on S2TG) */
uint8_t eff_ps; /* Effective PA output range (based on S2PS) */
uint16_t vmid; /* Virtual Machine ID (S2VMID) */
int vmid; /* Virtual Machine ID (S2VMID) */
uint64_t vttb; /* Address of translation table base (S2TTB) */
} SMMUS2Cfg;
@ -108,7 +108,7 @@ typedef struct SMMUTransCfg {
uint64_t ttb; /* TT base address */
uint8_t oas; /* output address width */
uint8_t tbi; /* Top Byte Ignore */
uint16_t asid;
int asid;
SMMUTransTableInfo tt[2];
/* Used by stage-2 only. */
struct SMMUS2Cfg s2cfg;
@ -132,8 +132,8 @@ typedef struct SMMUPciBus {
typedef struct SMMUIOTLBKey {
uint64_t iova;
uint16_t asid;
uint16_t vmid;
int asid;
int vmid;
uint8_t tg;
uint8_t level;
} SMMUIOTLBKey;
@ -205,11 +205,11 @@ SMMUDevice *smmu_find_sdev(SMMUState *s, uint32_t sid);
SMMUTLBEntry *smmu_iotlb_lookup(SMMUState *bs, SMMUTransCfg *cfg,
SMMUTransTableInfo *tt, hwaddr iova);
void smmu_iotlb_insert(SMMUState *bs, SMMUTransCfg *cfg, SMMUTLBEntry *entry);
SMMUIOTLBKey smmu_get_iotlb_key(uint16_t asid, uint16_t vmid, uint64_t iova,
SMMUIOTLBKey smmu_get_iotlb_key(int asid, int vmid, uint64_t iova,
uint8_t tg, uint8_t level);
void smmu_iotlb_inv_all(SMMUState *s);
void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid);
void smmu_iotlb_inv_vmid(SMMUState *s, uint16_t vmid);
void smmu_iotlb_inv_asid(SMMUState *s, int asid);
void smmu_iotlb_inv_vmid(SMMUState *s, int vmid);
void smmu_iotlb_inv_iova(SMMUState *s, int asid, int vmid, dma_addr_t iova,
uint8_t tg, uint64_t num_pages, uint8_t ttl);