1 files changed, 654 insertions, 0 deletions

diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c b/drivers/crypto/hisilicon/zip/zip_crypto.c
new file mode 100644
index 000000000000..b97513981a3b
--- /dev/null
+++ b/drivers/crypto/hisilicon/zip/zip_crypto.c
@@ -0,0 +1,654 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+#include <crypto/internal/acompress.h>
+#include <linux/bitfield.h>
+#include <linux/bitmap.h>
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+#include "zip.h"
+
+/* hisi_zip_sqe dw3 */
+#define HZIP_BD_STATUS_M			GENMASK(7, 0)
+/* hisi_zip_sqe dw7 */
+#define HZIP_IN_SGE_DATA_OFFSET_M		GENMASK(23, 0)
+#define HZIP_SQE_TYPE_M				GENMASK(31, 28)
+/* hisi_zip_sqe dw8 */
+#define HZIP_OUT_SGE_DATA_OFFSET_M		GENMASK(23, 0)
+/* hisi_zip_sqe dw9 */
+#define HZIP_REQ_TYPE_M				GENMASK(7, 0)
+#define HZIP_ALG_TYPE_DEFLATE			0x01
+#define HZIP_BUF_TYPE_M				GENMASK(11, 8)
+#define HZIP_SGL				0x1
+
+#define HZIP_ALG_PRIORITY			300
+#define HZIP_SGL_SGE_NR				10
+
+#define HZIP_ALG_DEFLATE			GENMASK(5, 4)
+
+static DEFINE_MUTEX(zip_algs_lock);
+static unsigned int zip_available_devs;
+
+enum hisi_zip_alg_type {
+	HZIP_ALG_TYPE_COMP = 0,
+	HZIP_ALG_TYPE_DECOMP = 1,
+};
+
+enum {
+	HZIP_QPC_COMP,
+	HZIP_QPC_DECOMP,
+	HZIP_CTX_Q_NUM
+};
+
+#define COMP_NAME_TO_TYPE(alg_name)					\
+	(!strcmp((alg_name), "deflate") ? HZIP_ALG_TYPE_DEFLATE : 0)
+
+struct hisi_zip_req {
+	struct acomp_req *req;
+	struct hisi_acc_hw_sgl *hw_src;
+	struct hisi_acc_hw_sgl *hw_dst;
+	dma_addr_t dma_src;
+	dma_addr_t dma_dst;
+	u16 req_id;
+};
+
+struct hisi_zip_req_q {
+	struct hisi_zip_req *q;
+	unsigned long *req_bitmap;
+	spinlock_t req_lock;
+	u16 size;
+};
+
+struct hisi_zip_qp_ctx {
+	struct hisi_qp *qp;
+	struct hisi_zip_req_q req_q;
+	struct hisi_acc_sgl_pool *sgl_pool;
+	struct hisi_zip *zip_dev;
+	struct hisi_zip_ctx *ctx;
+};
+
+struct hisi_zip_sqe_ops {
+	u8 sqe_type;
+	void (*fill_addr)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req);
+	void (*fill_buf_size)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req);
+	void (*fill_buf_type)(struct hisi_zip_sqe *sqe, u8 buf_type);
+	void (*fill_req_type)(struct hisi_zip_sqe *sqe, u8 req_type);
+	void (*fill_tag)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req);
+	void (*fill_sqe_type)(struct hisi_zip_sqe *sqe, u8 sqe_type);
+	u32 (*get_tag)(struct hisi_zip_sqe *sqe);
+	u32 (*get_status)(struct hisi_zip_sqe *sqe);
+	u32 (*get_dstlen)(struct hisi_zip_sqe *sqe);
+};
+
+struct hisi_zip_ctx {
+	struct hisi_zip_qp_ctx qp_ctx[HZIP_CTX_Q_NUM];
+	const struct hisi_zip_sqe_ops *ops;
+};
+
+static int sgl_sge_nr_set(const char *val, const struct kernel_param *kp)
+{
+	int ret;
+	u16 n;
+
+	if (!val)
+		return -EINVAL;
+
+	ret = kstrtou16(val, 10, &n);
+	if (ret || n == 0 || n > HISI_ACC_SGL_SGE_NR_MAX)
+		return -EINVAL;
+
+	return param_set_ushort(val, kp);
+}
+
+static const struct kernel_param_ops sgl_sge_nr_ops = {
+	.set = sgl_sge_nr_set,
+	.get = param_get_ushort,
+};
+
+static u16 sgl_sge_nr = HZIP_SGL_SGE_NR;
+module_param_cb(sgl_sge_nr, &sgl_sge_nr_ops, &sgl_sge_nr, 0444);
+MODULE_PARM_DESC(sgl_sge_nr, "Number of sge in sgl(1-255)");
+
+static struct hisi_zip_req *hisi_zip_create_req(struct hisi_zip_qp_ctx *qp_ctx,
+						struct acomp_req *req)
+{
+	struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
+	struct hisi_zip_req *q = req_q->q;
+	struct hisi_zip_req *req_cache;
+	int req_id;
+
+	spin_lock(&req_q->req_lock);
+
+	req_id = find_first_zero_bit(req_q->req_bitmap, req_q->size);
+	if (req_id >= req_q->size) {
+		spin_unlock(&req_q->req_lock);
+		dev_dbg(&qp_ctx->qp->qm->pdev->dev, "req cache is full!\n");
+		return ERR_PTR(-EAGAIN);
+	}
+	set_bit(req_id, req_q->req_bitmap);
+
+	spin_unlock(&req_q->req_lock);
+
+	req_cache = q + req_id;
+	req_cache->req_id = req_id;
+	req_cache->req = req;
+
+	return req_cache;
+}
+
+static void hisi_zip_remove_req(struct hisi_zip_qp_ctx *qp_ctx,
+				struct hisi_zip_req *req)
+{
+	struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
+
+	spin_lock(&req_q->req_lock);
+	clear_bit(req->req_id, req_q->req_bitmap);
+	spin_unlock(&req_q->req_lock);
+}
+
+static void hisi_zip_fill_addr(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req)
+{
+	sqe->source_addr_l = lower_32_bits(req->dma_src);
+	sqe->source_addr_h = upper_32_bits(req->dma_src);
+	sqe->dest_addr_l = lower_32_bits(req->dma_dst);
+	sqe->dest_addr_h = upper_32_bits(req->dma_dst);
+}
+
+static void hisi_zip_fill_buf_size(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req)
+{
+	struct acomp_req *a_req = req->req;
+
+	sqe->input_data_length = a_req->slen;
+	sqe->dest_avail_out = a_req->dlen;
+}
+
+static void hisi_zip_fill_buf_type(struct hisi_zip_sqe *sqe, u8 buf_type)
+{
+	u32 val;
+
+	val = sqe->dw9 & ~HZIP_BUF_TYPE_M;
+	val |= FIELD_PREP(HZIP_BUF_TYPE_M, buf_type);
+	sqe->dw9 = val;
+}
+
+static void hisi_zip_fill_req_type(struct hisi_zip_sqe *sqe, u8 req_type)
+{
+	u32 val;
+
+	val = sqe->dw9 & ~HZIP_REQ_TYPE_M;
+	val |= FIELD_PREP(HZIP_REQ_TYPE_M, req_type);
+	sqe->dw9 = val;
+}
+
+static void hisi_zip_fill_tag(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req)
+{
+	sqe->dw26 = req->req_id;
+}
+
+static void hisi_zip_fill_sqe_type(struct hisi_zip_sqe *sqe, u8 sqe_type)
+{
+	u32 val;
+
+	val = sqe->dw7 & ~HZIP_SQE_TYPE_M;
+	val |= FIELD_PREP(HZIP_SQE_TYPE_M, sqe_type);
+	sqe->dw7 = val;
+}
+
+static void hisi_zip_fill_sqe(struct hisi_zip_ctx *ctx, struct hisi_zip_sqe *sqe,
+			      u8 req_type, struct hisi_zip_req *req)
+{
+	const struct hisi_zip_sqe_ops *ops = ctx->ops;
+
+	memset(sqe, 0, sizeof(struct hisi_zip_sqe));
+
+	ops->fill_addr(sqe, req);
+	ops->fill_buf_size(sqe, req);
+	ops->fill_buf_type(sqe, HZIP_SGL);
+	ops->fill_req_type(sqe, req_type);
+	ops->fill_tag(sqe, req);
+	ops->fill_sqe_type(sqe, ops->sqe_type);
+}
+
+static int hisi_zip_do_work(struct hisi_zip_qp_ctx *qp_ctx,
+			    struct hisi_zip_req *req)
+{
+	struct hisi_acc_sgl_pool *pool = qp_ctx->sgl_pool;
+	struct hisi_zip_dfx *dfx = &qp_ctx->zip_dev->dfx;
+	struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
+	struct acomp_req *a_req = req->req;
+	struct hisi_qp *qp = qp_ctx->qp;
+	struct device *dev = &qp->qm->pdev->dev;
+	struct hisi_zip_sqe zip_sqe;
+	int ret;
+
+	if (unlikely(!a_req->src || !a_req->slen || !a_req->dst || !a_req->dlen))
+		return -EINVAL;
+
+	req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->src, pool,
+						    req->req_id << 1, &req->dma_src,
+						    DMA_TO_DEVICE);
+	if (IS_ERR(req->hw_src)) {
+		dev_err(dev, "failed to map the src buffer to hw sgl (%ld)!\n",
+			PTR_ERR(req->hw_src));
+		return PTR_ERR(req->hw_src);
+	}
+
+	req->hw_dst = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->dst, pool,
+						    (req->req_id << 1) + 1,
+						    &req->dma_dst, DMA_FROM_DEVICE);
+	if (IS_ERR(req->hw_dst)) {
+		ret = PTR_ERR(req->hw_dst);
+		dev_err(dev, "failed to map the dst buffer to hw slg (%d)!\n",
+			ret);
+		goto err_unmap_input;
+	}
+
+	hisi_zip_fill_sqe(qp_ctx->ctx, &zip_sqe, qp->req_type, req);
+
+	/* send command to start a task */
+	atomic64_inc(&dfx->send_cnt);
+	spin_lock_bh(&req_q->req_lock);
+	ret = hisi_qp_send(qp, &zip_sqe);
+	spin_unlock_bh(&req_q->req_lock);
+	if (unlikely(ret < 0)) {
+		atomic64_inc(&dfx->send_busy_cnt);
+		ret = -EAGAIN;
+		dev_dbg_ratelimited(dev, "failed to send request!\n");
+		goto err_unmap_output;
+	}
+
+	return -EINPROGRESS;
+
+err_unmap_output:
+	hisi_acc_sg_buf_unmap(dev, a_req->dst, req->hw_dst, DMA_FROM_DEVICE);
+err_unmap_input:
+	hisi_acc_sg_buf_unmap(dev, a_req->src, req->hw_src, DMA_TO_DEVICE);
+	return ret;
+}
+
+static u32 hisi_zip_get_tag(struct hisi_zip_sqe *sqe)
+{
+	return sqe->dw26;
+}
+
+static u32 hisi_zip_get_status(struct hisi_zip_sqe *sqe)
+{
+	return sqe->dw3 & HZIP_BD_STATUS_M;
+}
+
+static u32 hisi_zip_get_dstlen(struct hisi_zip_sqe *sqe)
+{
+	return sqe->produced;
+}
+
+static void hisi_zip_acomp_cb(struct hisi_qp *qp, void *data)
+{
+	struct hisi_zip_qp_ctx *qp_ctx = qp->qp_ctx;
+	const struct hisi_zip_sqe_ops *ops = qp_ctx->ctx->ops;
+	struct hisi_zip_dfx *dfx = &qp_ctx->zip_dev->dfx;
+	struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
+	struct device *dev = &qp->qm->pdev->dev;
+	struct hisi_zip_sqe *sqe = data;
+	u32 tag = ops->get_tag(sqe);
+	struct hisi_zip_req *req = req_q->q + tag;
+	struct acomp_req *acomp_req = req->req;
+	int err = 0;
+	u32 status;
+
+	atomic64_inc(&dfx->recv_cnt);
+	status = ops->get_status(sqe);
+	if (unlikely(status != 0 && status != HZIP_NC_ERR)) {
+		dev_err(dev, "%scompress fail in qp%u: %u, output: %u\n",
+			(qp->alg_type == 0) ? "" : "de", qp->qp_id, status,
+			sqe->produced);
+		atomic64_inc(&dfx->err_bd_cnt);
+		err = -EIO;
+	}
+
+	hisi_acc_sg_buf_unmap(dev, acomp_req->dst, req->hw_dst, DMA_FROM_DEVICE);
+	hisi_acc_sg_buf_unmap(dev, acomp_req->src, req->hw_src, DMA_TO_DEVICE);
+
+	acomp_req->dlen = ops->get_dstlen(sqe);
+
+	if (acomp_req->base.complete)
+		acomp_request_complete(acomp_req, err);
+
+	hisi_zip_remove_req(qp_ctx, req);
+}
+
+static int hisi_zip_acompress(struct acomp_req *acomp_req)
+{
+	struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
+	struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_COMP];
+	struct device *dev = &qp_ctx->qp->qm->pdev->dev;
+	struct hisi_zip_req *req;
+	int ret;
+
+	req = hisi_zip_create_req(qp_ctx, acomp_req);
+	if (IS_ERR(req))
+		return PTR_ERR(req);
+
+	ret = hisi_zip_do_work(qp_ctx, req);
+	if (unlikely(ret != -EINPROGRESS)) {
+		dev_info_ratelimited(dev, "failed to do compress (%d)!\n", ret);
+		hisi_zip_remove_req(qp_ctx, req);
+	}
+
+	return ret;
+}
+
+static int hisi_zip_adecompress(struct acomp_req *acomp_req)
+{
+	struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
+	struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_DECOMP];
+	struct device *dev = &qp_ctx->qp->qm->pdev->dev;
+	struct hisi_zip_req *req;
+	int ret;
+
+	req = hisi_zip_create_req(qp_ctx, acomp_req);
+	if (IS_ERR(req))
+		return PTR_ERR(req);
+
+	ret = hisi_zip_do_work(qp_ctx, req);
+	if (unlikely(ret != -EINPROGRESS)) {
+		dev_info_ratelimited(dev, "failed to do decompress (%d)!\n",
+				     ret);
+		hisi_zip_remove_req(qp_ctx, req);
+	}
+
+	return ret;
+}
+
+static int hisi_zip_start_qp(struct hisi_qp *qp, struct hisi_zip_qp_ctx *qp_ctx,
+			     int alg_type, int req_type)
+{
+	struct device *dev = &qp->qm->pdev->dev;
+	int ret;
+
+	qp->req_type = req_type;
+	qp->alg_type = alg_type;
+	qp->qp_ctx = qp_ctx;
+
+	ret = hisi_qm_start_qp(qp, 0);
+	if (ret < 0) {
+		dev_err(dev, "failed to start qp (%d)!\n", ret);
+		return ret;
+	}
+
+	qp_ctx->qp = qp;
+
+	return 0;
+}
+
+static void hisi_zip_release_qp(struct hisi_zip_qp_ctx *qp_ctx)
+{
+	hisi_qm_stop_qp(qp_ctx->qp);
+	hisi_qm_free_qps(&qp_ctx->qp, 1);
+}
+
+static const struct hisi_zip_sqe_ops hisi_zip_ops = {
+	.sqe_type		= 0x3,
+	.fill_addr		= hisi_zip_fill_addr,
+	.fill_buf_size		= hisi_zip_fill_buf_size,
+	.fill_buf_type		= hisi_zip_fill_buf_type,
+	.fill_req_type		= hisi_zip_fill_req_type,
+	.fill_tag		= hisi_zip_fill_tag,
+	.fill_sqe_type		= hisi_zip_fill_sqe_type,
+	.get_tag		= hisi_zip_get_tag,
+	.get_status		= hisi_zip_get_status,
+	.get_dstlen		= hisi_zip_get_dstlen,
+};
+
+static int hisi_zip_ctx_init(struct hisi_zip_ctx *hisi_zip_ctx, u8 req_type, int node)
+{
+	struct hisi_qp *qps[HZIP_CTX_Q_NUM] = { NULL };
+	struct hisi_zip_qp_ctx *qp_ctx;
+	struct hisi_zip *hisi_zip;
+	int ret, i, j;
+
+	ret = zip_create_qps(qps, HZIP_CTX_Q_NUM, node);
+	if (ret) {
+		pr_err("failed to create zip qps (%d)!\n", ret);
+		return -ENODEV;
+	}
+
+	hisi_zip = container_of(qps[0]->qm, struct hisi_zip, qm);
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+		/* alg_type = 0 for compress, 1 for decompress in hw sqe */
+		qp_ctx = &hisi_zip_ctx->qp_ctx[i];
+		qp_ctx->ctx = hisi_zip_ctx;
+		ret = hisi_zip_start_qp(qps[i], qp_ctx, i, req_type);
+		if (ret) {
+			for (j = i - 1; j >= 0; j--)
+				hisi_qm_stop_qp(hisi_zip_ctx->qp_ctx[j].qp);
+
+			hisi_qm_free_qps(qps, HZIP_CTX_Q_NUM);
+			return ret;
+		}
+
+		qp_ctx->zip_dev = hisi_zip;
+	}
+
+	hisi_zip_ctx->ops = &hisi_zip_ops;
+
+	return 0;
+}
+
+static void hisi_zip_ctx_exit(struct hisi_zip_ctx *hisi_zip_ctx)
+{
+	int i;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++)
+		hisi_zip_release_qp(&hisi_zip_ctx->qp_ctx[i]);
+}
+
+static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx)
+{
+	u16 q_depth = ctx->qp_ctx[0].qp->sq_depth;
+	struct hisi_zip_req_q *req_q;
+	int i, ret;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+		req_q = &ctx->qp_ctx[i].req_q;
+		req_q->size = q_depth;
+
+		req_q->req_bitmap = bitmap_zalloc(req_q->size, GFP_KERNEL);
+		if (!req_q->req_bitmap) {
+			ret = -ENOMEM;
+			if (i == 0)
+				return ret;
+
+			goto err_free_comp_q;
+		}
+		spin_lock_init(&req_q->req_lock);
+
+		req_q->q = kcalloc(req_q->size, sizeof(struct hisi_zip_req),
+				   GFP_KERNEL);
+		if (!req_q->q) {
+			ret = -ENOMEM;
+			if (i == 0)
+				goto err_free_comp_bitmap;
+			else
+				goto err_free_decomp_bitmap;
+		}
+	}
+
+	return 0;
+
+err_free_decomp_bitmap:
+	bitmap_free(ctx->qp_ctx[HZIP_QPC_DECOMP].req_q.req_bitmap);
+err_free_comp_q:
+	kfree(ctx->qp_ctx[HZIP_QPC_COMP].req_q.q);
+err_free_comp_bitmap:
+	bitmap_free(ctx->qp_ctx[HZIP_QPC_COMP].req_q.req_bitmap);
+	return ret;
+}
+
+static void hisi_zip_release_req_q(struct hisi_zip_ctx *ctx)
+{
+	int i;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+		kfree(ctx->qp_ctx[i].req_q.q);
+		bitmap_free(ctx->qp_ctx[i].req_q.req_bitmap);
+	}
+}
+
+static int hisi_zip_create_sgl_pool(struct hisi_zip_ctx *ctx)
+{
+	u16 q_depth = ctx->qp_ctx[0].qp->sq_depth;
+	struct hisi_zip_qp_ctx *tmp;
+	struct device *dev;
+	int i;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+		tmp = &ctx->qp_ctx[i];
+		dev = &tmp->qp->qm->pdev->dev;
+		tmp->sgl_pool = hisi_acc_create_sgl_pool(dev, q_depth << 1,
+							 sgl_sge_nr);
+		if (IS_ERR(tmp->sgl_pool)) {
+			if (i == 1)
+				goto err_free_sgl_pool0;
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+
+err_free_sgl_pool0:
+	hisi_acc_free_sgl_pool(&ctx->qp_ctx[HZIP_QPC_COMP].qp->qm->pdev->dev,
+			       ctx->qp_ctx[HZIP_QPC_COMP].sgl_pool);
+	return -ENOMEM;
+}
+
+static void hisi_zip_release_sgl_pool(struct hisi_zip_ctx *ctx)
+{
+	int i;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++)
+		hisi_acc_free_sgl_pool(&ctx->qp_ctx[i].qp->qm->pdev->dev,
+				       ctx->qp_ctx[i].sgl_pool);
+}
+
+static void hisi_zip_set_acomp_cb(struct hisi_zip_ctx *ctx,
+				  void (*fn)(struct hisi_qp *, void *))
+{
+	int i;
+
+	for (i = 0; i < HZIP_CTX_Q_NUM; i++)
+		ctx->qp_ctx[i].qp->req_cb = fn;
+}
+
+static int hisi_zip_acomp_init(struct crypto_acomp *tfm)
+{
+	const char *alg_name = crypto_tfm_alg_name(&tfm->base);
+	struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base);
+	struct device *dev;
+	int ret;
+
+	ret = hisi_zip_ctx_init(ctx, COMP_NAME_TO_TYPE(alg_name), tfm->base.node);
+	if (ret) {
+		pr_err("failed to init ctx (%d)!\n", ret);
+		return ret;
+	}
+
+	dev = &ctx->qp_ctx[0].qp->qm->pdev->dev;
+
+	ret = hisi_zip_create_req_q(ctx);
+	if (ret) {
+		dev_err(dev, "failed to create request queue (%d)!\n", ret);
+		goto err_ctx_exit;
+	}
+
+	ret = hisi_zip_create_sgl_pool(ctx);
+	if (ret) {
+		dev_err(dev, "failed to create sgl pool (%d)!\n", ret);
+		goto err_release_req_q;
+	}
+
+	hisi_zip_set_acomp_cb(ctx, hisi_zip_acomp_cb);
+
+	return 0;
+
+err_release_req_q:
+	hisi_zip_release_req_q(ctx);
+err_ctx_exit:
+	hisi_zip_ctx_exit(ctx);
+	return ret;
+}
+
+static void hisi_zip_acomp_exit(struct crypto_acomp *tfm)
+{
+	struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base);
+
+	hisi_zip_set_acomp_cb(ctx, NULL);
+	hisi_zip_release_sgl_pool(ctx);
+	hisi_zip_release_req_q(ctx);
+	hisi_zip_ctx_exit(ctx);
+}
+
+static struct acomp_alg hisi_zip_acomp_deflate = {
+	.init			= hisi_zip_acomp_init,
+	.exit			= hisi_zip_acomp_exit,
+	.compress		= hisi_zip_acompress,
+	.decompress		= hisi_zip_adecompress,
+	.base			= {
+		.cra_name		= "deflate",
+		.cra_driver_name	= "hisi-deflate-acomp",
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_module		= THIS_MODULE,
+		.cra_priority		= HZIP_ALG_PRIORITY,
+		.cra_ctxsize		= sizeof(struct hisi_zip_ctx),
+	}
+};
+
+static int hisi_zip_register_deflate(struct hisi_qm *qm)
+{
+	int ret;
+
+	if (!hisi_zip_alg_support(qm, HZIP_ALG_DEFLATE))
+		return 0;
+
+	ret = crypto_register_acomp(&hisi_zip_acomp_deflate);
+	if (ret)
+		dev_err(&qm->pdev->dev, "failed to register to deflate (%d)!\n", ret);
+
+	return ret;
+}
+
+static void hisi_zip_unregister_deflate(struct hisi_qm *qm)
+{
+	if (!hisi_zip_alg_support(qm, HZIP_ALG_DEFLATE))
+		return;
+
+	crypto_unregister_acomp(&hisi_zip_acomp_deflate);
+}
+
+int hisi_zip_register_to_crypto(struct hisi_qm *qm)
+{
+	int ret = 0;
+
+	mutex_lock(&zip_algs_lock);
+	if (zip_available_devs++)
+		goto unlock;
+
+	ret = hisi_zip_register_deflate(qm);
+	if (ret)
+		zip_available_devs--;
+
+unlock:
+	mutex_unlock(&zip_algs_lock);
+	return ret;
+}
+
+void hisi_zip_unregister_from_crypto(struct hisi_qm *qm)
+{
+	mutex_lock(&zip_algs_lock);
+	if (--zip_available_devs)
+		goto unlock;
+
+	hisi_zip_unregister_deflate(qm);
+
+unlock:
+	mutex_unlock(&zip_algs_lock);
+}