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hw/arm/smmu: Use enum for SMMU stage

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Currently, translation stage is represented as an int, where 1 is stage-1 and
2 is stage-2, when nested is added, 3 would be confusing to represent nesting,
so we use an enum instead.

While keeping the same values, this is useful for:
 - Doing tricks with bit masks, where BIT(0) is stage-1 and BIT(1) is
   stage-2 and both is nested.
 - Tracing, as stage is printed as int.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-id: 20240715084519.1189624-5-smostafa@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Mostafa Saleh 2024-07-15 08:45:04 +00:00 • committed by Peter Maydell
parent 2731ea049d
commit f6cc198050
3 changed files with 25 additions and 17 deletions
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11
include/hw/arm/smmu-common.h
View file

@ -49,8 +49,15 @@ typedef enum {
SMMU_PTW_ERR_PERMISSION, /* Permission fault */
} SMMUPTWEventType;
/* SMMU Stage */
typedef enum {
SMMU_STAGE_1 = 1,
SMMU_STAGE_2,
SMMU_NESTED,
} SMMUStage;
typedef struct SMMUPTWEventInfo {
int stage;
SMMUStage stage;
SMMUPTWEventType type;
dma_addr_t addr; /* fetched address that induced an abort, if any */
} SMMUPTWEventInfo;
@ -88,7 +95,7 @@ typedef struct SMMUS2Cfg {
*/
typedef struct SMMUTransCfg {
/* Shared fields between stage-1 and stage-2. */
int stage; /* translation stage */
SMMUStage stage; /* translation stage */
bool disabled; /* smmu is disabled */
bool bypassed; /* translation is bypassed */
bool aborted; /* translation is aborted */