[PATCH 06/10] xen/arm: smmuv3: Remove the unused fields for PREFETCH_CONFIG command

[Rahul Singh <rahul.singh@xxxxxxx>]

Backport Linux commit e0bb4b73540495111ff2723e41cf5add2f031021

Original commit message:
    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: Zenghui Yu <yuzenghui@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20210407084448.1838-1-yuzenghui@xxxxxxxxxx
    Signed-off-by: Will Deacon <will@xxxxxxxxxx>

Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx>
---
 xen/drivers/passthrough/arm/smmu-v3.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/xen/drivers/passthrough/arm/smmu-v3.c 
b/xen/drivers/passthrough/arm/smmu-v3.c
index 86f4cb7514..c0ec5f1525 100644
--- a/xen/drivers/passthrough/arm/smmu-v3.c
+++ b/xen/drivers/passthrough/arm/smmu-v3.c
@@ -299,8 +299,6 @@ 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
@@ -692,8 +690,6 @@ 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_STE:
                cmd[0] |= FIELD_PREP(CMDQ_CFGI_0_SID, ent->cfgi.sid);
-- 
2.25.1