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path: root/drivers/crypto/ccp/ccp-ops.c
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Diffstat (limited to 'drivers/crypto/ccp/ccp-ops.c')
-rw-r--r--drivers/crypto/ccp/ccp-ops.c69
1 files changed, 68 insertions, 1 deletions
diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c
index eefdf595f758..ffa2891035ac 100644
--- a/drivers/crypto/ccp/ccp-ops.c
+++ b/drivers/crypto/ccp/ccp-ops.c
@@ -1427,6 +1427,70 @@ e_mask:
return ret;
}
+static int ccp_run_passthru_nomap_cmd(struct ccp_cmd_queue *cmd_q,
+ struct ccp_cmd *cmd)
+{
+ struct ccp_passthru_nomap_engine *pt = &cmd->u.passthru_nomap;
+ struct ccp_dm_workarea mask;
+ struct ccp_op op;
+ int ret;
+
+ if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1)))
+ return -EINVAL;
+
+ if (!pt->src_dma || !pt->dst_dma)
+ return -EINVAL;
+
+ if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
+ if (pt->mask_len != CCP_PASSTHRU_MASKSIZE)
+ return -EINVAL;
+ if (!pt->mask)
+ return -EINVAL;
+ }
+
+ BUILD_BUG_ON(CCP_PASSTHRU_KSB_COUNT != 1);
+
+ memset(&op, 0, sizeof(op));
+ op.cmd_q = cmd_q;
+ op.jobid = ccp_gen_jobid(cmd_q->ccp);
+
+ if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
+ /* Load the mask */
+ op.ksb_key = cmd_q->ksb_key;
+
+ mask.length = pt->mask_len;
+ mask.dma.address = pt->mask;
+ mask.dma.length = pt->mask_len;
+
+ ret = ccp_copy_to_ksb(cmd_q, &mask, op.jobid, op.ksb_key,
+ CCP_PASSTHRU_BYTESWAP_NOOP);
+ if (ret) {
+ cmd->engine_error = cmd_q->cmd_error;
+ return ret;
+ }
+ }
+
+ /* Send data to the CCP Passthru engine */
+ op.eom = 1;
+ op.soc = 1;
+
+ op.src.type = CCP_MEMTYPE_SYSTEM;
+ op.src.u.dma.address = pt->src_dma;
+ op.src.u.dma.offset = 0;
+ op.src.u.dma.length = pt->src_len;
+
+ op.dst.type = CCP_MEMTYPE_SYSTEM;
+ op.dst.u.dma.address = pt->dst_dma;
+ op.dst.u.dma.offset = 0;
+ op.dst.u.dma.length = pt->src_len;
+
+ ret = cmd_q->ccp->vdata->perform->perform_passthru(&op);
+ if (ret)
+ cmd->engine_error = cmd_q->cmd_error;
+
+ return ret;
+}
+
static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
{
struct ccp_ecc_engine *ecc = &cmd->u.ecc;
@@ -1762,7 +1826,10 @@ int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
ret = ccp_run_rsa_cmd(cmd_q, cmd);
break;
case CCP_ENGINE_PASSTHRU:
- ret = ccp_run_passthru_cmd(cmd_q, cmd);
+ if (cmd->flags & CCP_CMD_PASSTHRU_NO_DMA_MAP)
+ ret = ccp_run_passthru_nomap_cmd(cmd_q, cmd);
+ else
+ ret = ccp_run_passthru_cmd(cmd_q, cmd);
break;
case CCP_ENGINE_ECC:
ret = ccp_run_ecc_cmd(cmd_q, cmd);