Commit e0bb4b73 authored by Zenghui Yu's avatar Zenghui Yu Committed by Will Deacon
Browse files

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



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: default avatarZenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20210407084448.1838-1-yuzenghui@huawei.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 6cc7e5a9

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

+0 −2
Original line number Diff line number Diff line
@@ -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);

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h

+0 −2
Original line number Diff line number Diff line
@@ -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