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iommu/arm-smmu-v3: Remove the unused fields for PREFETCH_CONFIG command

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Per SMMUv3 spec, there is no Size and Addr field in the PREFETCH_CONFIG
command and they're not used by the driver. Remove them.

We can add them back if we're going to use PREFETCH_ADDR in the future.

Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20210407084448.1838-1-yuzenghui@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Zenghui Yu 2021-04-07 16:44:48 +08:00 committed by Will Deacon
parent 6cc7e5a9c6
commit e0bb4b7354
2 changed files with 0 additions and 4 deletions
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2
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
View file

@ -245,8 +245,6 @@ static int arm_smmu_cmdq_build_cmd(u64 *cmd, struct arm_smmu_cmdq_ent *ent)
break;
case CMDQ_OP_PREFETCH_CFG:
cmd[0] |= FIELD_PREP(CMDQ_PREFETCH_0_SID, ent->prefetch.sid);
cmd[1] |= FIELD_PREP(CMDQ_PREFETCH_1_SIZE, ent->prefetch.size);
cmd[1] |= ent->prefetch.addr & CMDQ_PREFETCH_1_ADDR_MASK;
break;
case CMDQ_OP_CFGI_CD:
cmd[0] |= FIELD_PREP(CMDQ_CFGI_0_SSID, ent->cfgi.ssid);

2
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
View file

@ -410,8 +410,6 @@ struct arm_smmu_cmdq_ent {
#define CMDQ_OP_PREFETCH_CFG 0x1
struct {
u32 sid;
u8 size;
u64 addr;
} prefetch;
#define CMDQ_OP_CFGI_STE 0x3