crypto: hisilicon - add DebugFS for HiSilicon SEC

The HiSilicon SEC engine driver uses DebugFS
to provide main debug information for user space.
Signed-off-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/hisilicon/sec2/sec.h

@@ -119,9 +119,32 @@ enum sec_endian {
 	SEC_64BE
 };
 
+enum sec_debug_file_index {
+	SEC_CURRENT_QM,
+	SEC_CLEAR_ENABLE,
+	SEC_DEBUG_FILE_NUM,
+};
+
+struct sec_debug_file {
+	enum sec_debug_file_index index;
+	spinlock_t lock;
+	struct hisi_qm *qm;
+};
+
+struct sec_dfx {
+	u64 send_cnt;
+	u64 recv_cnt;
+};
+
+struct sec_debug {
+	struct sec_dfx dfx;
+	struct sec_debug_file files[SEC_DEBUG_FILE_NUM];
+};
+
 struct sec_dev {
 	struct hisi_qm qm;
 	struct list_head list;
+	struct sec_debug debug;
 	u32 ctx_q_num;
 	u32 num_vfs;
 	unsigned long status;

drivers/crypto/hisilicon/sec2/sec_crypto.c

@@ -120,6 +120,8 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp)
 		return;
 	}
 
+	__sync_add_and_fetch(&req->ctx->sec->debug.dfx.recv_cnt, 1);
+
 	req->ctx->req_op->buf_unmap(req->ctx, req);
 
 	req->ctx->req_op->callback(req->ctx, req);
@@ -133,6 +135,7 @@ static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req)
 	mutex_lock(&qp_ctx->req_lock);
 	ret = hisi_qp_send(qp_ctx->qp, &req->sec_sqe);
 	mutex_unlock(&qp_ctx->req_lock);
+	__sync_add_and_fetch(&ctx->sec->debug.dfx.send_cnt, 1);
 
 	if (ret == -EBUSY)
 		return -ENOBUFS;