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authorZhou Wang <wangzhou1@hisilicon.com>2019-08-02 15:57:52 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2019-08-09 15:11:54 +1000
commit62c455ca853e3e352e465d66a6cc39f1f88caa60 (patch)
tree1f10817d304eea6c22819b308e6d578b36383bb1 /drivers/crypto/hisilicon/zip/zip_crypto.c
parentdfed0098ab91f647b5720ab6f1e03b5b55139408 (diff)
downloadlwn-62c455ca853e3e352e465d66a6cc39f1f88caa60.tar.gz
lwn-62c455ca853e3e352e465d66a6cc39f1f88caa60.zip
crypto: hisilicon - add HiSilicon ZIP accelerator support
The HiSilicon ZIP accelerator implements the zlib and gzip algorithm. It uses Hisilicon QM as the interface to the CPU. This patch provides PCIe driver to the accelerator and registers it to crypto acomp interface. It also uses sgl as data input/output interface. Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com> Signed-off-by: Shiju Jose <shiju.jose@huawei.com> Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com> Signed-off-by: Hao Fang <fanghao11@huawei.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/hisilicon/zip/zip_crypto.c')
-rw-r--r--drivers/crypto/hisilicon/zip/zip_crypto.c651
1 files changed, 651 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..303351325a58
--- /dev/null
+++ b/drivers/crypto/hisilicon/zip/zip_crypto.c
@@ -0,0 +1,651 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+#include <crypto/internal/acompress.h>
+#include <linux/bitfield.h>
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+#include "zip.h"
+
+#define HZIP_ZLIB_HEAD_SIZE 2
+#define HZIP_GZIP_HEAD_SIZE 10
+
+#define GZIP_HEAD_FHCRC_BIT BIT(1)
+#define GZIP_HEAD_FEXTRA_BIT BIT(2)
+#define GZIP_HEAD_FNAME_BIT BIT(3)
+#define GZIP_HEAD_FCOMMENT_BIT BIT(4)
+
+#define GZIP_HEAD_FLG_SHIFT 3
+#define GZIP_HEAD_FEXTRA_SHIFT 10
+#define GZIP_HEAD_FEXTRA_XLEN 2
+#define GZIP_HEAD_FHCRC_SIZE 2
+
+#define HZIP_CTX_Q_NUM 2
+#define HZIP_GZIP_HEAD_BUF 256
+#define HZIP_ALG_PRIORITY 300
+
+static const u8 zlib_head[HZIP_ZLIB_HEAD_SIZE] = {0x78, 0x9c};
+static const u8 gzip_head[HZIP_GZIP_HEAD_SIZE] = {0x1f, 0x8b, 0x08, 0x0, 0x0,
+ 0x0, 0x0, 0x0, 0x0, 0x03};
+enum hisi_zip_alg_type {
+ HZIP_ALG_TYPE_COMP = 0,
+ HZIP_ALG_TYPE_DECOMP = 1,
+};
+
+#define COMP_NAME_TO_TYPE(alg_name) \
+ (!strcmp((alg_name), "zlib-deflate") ? HZIP_ALG_TYPE_ZLIB : \
+ !strcmp((alg_name), "gzip") ? HZIP_ALG_TYPE_GZIP : 0) \
+
+#define TO_HEAD_SIZE(req_type) \
+ (((req_type) == HZIP_ALG_TYPE_ZLIB) ? sizeof(zlib_head) : \
+ ((req_type) == HZIP_ALG_TYPE_GZIP) ? sizeof(gzip_head) : 0) \
+
+#define TO_HEAD(req_type) \
+ (((req_type) == HZIP_ALG_TYPE_ZLIB) ? zlib_head : \
+ ((req_type) == HZIP_ALG_TYPE_GZIP) ? gzip_head : 0) \
+
+struct hisi_zip_req {
+ struct acomp_req *req;
+ struct scatterlist *src;
+ struct scatterlist *dst;
+ size_t slen;
+ size_t dlen;
+ struct hisi_acc_hw_sgl *hw_src;
+ struct hisi_acc_hw_sgl *hw_dst;
+ dma_addr_t dma_src;
+ dma_addr_t dma_dst;
+ int req_id;
+};
+
+struct hisi_zip_req_q {
+ struct hisi_zip_req *q;
+ unsigned long *req_bitmap;
+ rwlock_t req_lock;
+ u16 size;
+};
+
+struct hisi_zip_qp_ctx {
+ struct hisi_qp *qp;
+ struct hisi_zip_sqe zip_sqe;
+ 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_ctx {
+#define QPC_COMP 0
+#define QPC_DECOMP 1
+ struct hisi_zip_qp_ctx qp_ctx[HZIP_CTX_Q_NUM];
+};
+
+static void hisi_zip_config_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_config_tag(struct hisi_zip_sqe *sqe, u32 tag)
+{
+ sqe->tag = tag;
+}
+
+static void hisi_zip_fill_sqe(struct hisi_zip_sqe *sqe, u8 req_type,
+ dma_addr_t s_addr, dma_addr_t d_addr, u32 slen,
+ u32 dlen)
+{
+ memset(sqe, 0, sizeof(struct hisi_zip_sqe));
+
+ sqe->input_data_length = slen;
+ sqe->dw9 = FIELD_PREP(HZIP_REQ_TYPE_M, req_type);
+ sqe->dest_avail_out = dlen;
+ sqe->source_addr_l = lower_32_bits(s_addr);
+ sqe->source_addr_h = upper_32_bits(s_addr);
+ sqe->dest_addr_l = lower_32_bits(d_addr);
+ sqe->dest_addr_h = upper_32_bits(d_addr);
+}
+
+static int hisi_zip_create_qp(struct hisi_qm *qm, struct hisi_zip_qp_ctx *ctx,
+ int alg_type, int req_type)
+{
+ struct hisi_qp *qp;
+ int ret;
+
+ qp = hisi_qm_create_qp(qm, alg_type);
+ if (IS_ERR(qp))
+ return PTR_ERR(qp);
+
+ qp->req_type = req_type;
+ qp->qp_ctx = ctx;
+ ctx->qp = qp;
+
+ ret = hisi_qm_start_qp(qp, 0);
+ if (ret < 0)
+ goto err_release_qp;
+
+ return 0;
+
+err_release_qp:
+ hisi_qm_release_qp(qp);
+ return ret;
+}
+
+static void hisi_zip_release_qp(struct hisi_zip_qp_ctx *ctx)
+{
+ hisi_qm_stop_qp(ctx->qp);
+ hisi_qm_release_qp(ctx->qp);
+}
+
+static int hisi_zip_ctx_init(struct hisi_zip_ctx *hisi_zip_ctx, u8 req_type)
+{
+ struct hisi_zip *hisi_zip;
+ struct hisi_qm *qm;
+ int ret, i, j;
+
+ /* find the proper zip device */
+ hisi_zip = find_zip_device(cpu_to_node(smp_processor_id()));
+ if (!hisi_zip) {
+ pr_err("Failed to find a proper ZIP device!\n");
+ return -ENODEV;
+ }
+ qm = &hisi_zip->qm;
+
+ for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+ /* alg_type = 0 for compress, 1 for decompress in hw sqe */
+ ret = hisi_zip_create_qp(qm, &hisi_zip_ctx->qp_ctx[i], i,
+ req_type);
+ if (ret)
+ goto err;
+
+ hisi_zip_ctx->qp_ctx[i].zip_dev = hisi_zip;
+ }
+
+ return 0;
+err:
+ for (j = i - 1; j >= 0; j--)
+ hisi_zip_release_qp(&hisi_zip_ctx->qp_ctx[j]);
+
+ return ret;
+}
+
+static void hisi_zip_ctx_exit(struct hisi_zip_ctx *hisi_zip_ctx)
+{
+ int i;
+
+ for (i = 1; i >= 0; i--)
+ hisi_zip_release_qp(&hisi_zip_ctx->qp_ctx[i]);
+}
+
+static u16 get_extra_field_size(const u8 *start)
+{
+ return *((u16 *)start) + GZIP_HEAD_FEXTRA_XLEN;
+}
+
+static u32 get_name_field_size(const u8 *start)
+{
+ return strlen(start) + 1;
+}
+
+static u32 get_comment_field_size(const u8 *start)
+{
+ return strlen(start) + 1;
+}
+
+static u32 __get_gzip_head_size(const u8 *src)
+{
+ u8 head_flg = *(src + GZIP_HEAD_FLG_SHIFT);
+ u32 size = GZIP_HEAD_FEXTRA_SHIFT;
+
+ if (head_flg & GZIP_HEAD_FEXTRA_BIT)
+ size += get_extra_field_size(src + size);
+ if (head_flg & GZIP_HEAD_FNAME_BIT)
+ size += get_name_field_size(src + size);
+ if (head_flg & GZIP_HEAD_FCOMMENT_BIT)
+ size += get_comment_field_size(src + size);
+ if (head_flg & GZIP_HEAD_FHCRC_BIT)
+ size += GZIP_HEAD_FHCRC_SIZE;
+
+ return size;
+}
+
+static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx)
+{
+ 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 = QM_Q_DEPTH;
+
+ req_q->req_bitmap = kcalloc(BITS_TO_LONGS(req_q->size),
+ sizeof(long), GFP_KERNEL);
+ if (!req_q->req_bitmap) {
+ ret = -ENOMEM;
+ if (i == 1)
+ goto err_free_loop0;
+ }
+ rwlock_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_bitmap;
+ else
+ goto err_free_loop1;
+ }
+ }
+
+ return 0;
+
+err_free_loop1:
+ kfree(ctx->qp_ctx[QPC_DECOMP].req_q.req_bitmap);
+err_free_loop0:
+ kfree(ctx->qp_ctx[QPC_COMP].req_q.q);
+err_free_bitmap:
+ kfree(ctx->qp_ctx[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);
+ kfree(ctx->qp_ctx[i].req_q.req_bitmap);
+ }
+}
+
+static int hisi_zip_create_sgl_pool(struct hisi_zip_ctx *ctx)
+{
+ struct hisi_zip_qp_ctx *tmp;
+ int i, ret;
+
+ for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
+ tmp = &ctx->qp_ctx[i];
+ ret = hisi_acc_create_sgl_pool(&tmp->qp->qm->pdev->dev,
+ &tmp->sgl_pool,
+ QM_Q_DEPTH << 1);
+ if (ret < 0) {
+ if (i == 1)
+ goto err_free_sgl_pool0;
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+
+err_free_sgl_pool0:
+ hisi_acc_free_sgl_pool(&ctx->qp_ctx[QPC_COMP].qp->qm->pdev->dev,
+ &ctx->qp_ctx[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_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;
+
+ if (qp_ctx->qp->alg_type == HZIP_ALG_TYPE_COMP)
+ kfree(req->dst);
+ else
+ kfree(req->src);
+
+ write_lock(&req_q->req_lock);
+ clear_bit(req->req_id, req_q->req_bitmap);
+ memset(req, 0, sizeof(struct hisi_zip_req));
+ write_unlock(&req_q->req_lock);
+}
+
+static void hisi_zip_acomp_cb(struct hisi_qp *qp, void *data)
+{
+ struct hisi_zip_sqe *sqe = data;
+ struct hisi_zip_qp_ctx *qp_ctx = qp->qp_ctx;
+ struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
+ struct hisi_zip_req *req = req_q->q + sqe->tag;
+ struct acomp_req *acomp_req = req->req;
+ struct device *dev = &qp->qm->pdev->dev;
+ u32 status, dlen, head_size;
+ int err = 0;
+
+ status = sqe->dw3 & HZIP_BD_STATUS_M;
+
+ if (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);
+ err = -EIO;
+ }
+ dlen = sqe->produced;
+
+ hisi_acc_sg_buf_unmap(dev, req->src, req->hw_src);
+ hisi_acc_sg_buf_unmap(dev, req->dst, req->hw_dst);
+
+ head_size = (qp->alg_type == 0) ? TO_HEAD_SIZE(qp->req_type) : 0;
+ acomp_req->dlen = dlen + head_size;
+
+ if (acomp_req->base.complete)
+ acomp_request_complete(acomp_req, err);
+
+ hisi_zip_remove_req(qp_ctx, req);
+}
+
+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);
+ int ret;
+
+ ret = hisi_zip_ctx_init(ctx, COMP_NAME_TO_TYPE(alg_name));
+ if (ret)
+ return ret;
+
+ ret = hisi_zip_create_req_q(ctx);
+ if (ret)
+ goto err_ctx_exit;
+
+ ret = hisi_zip_create_sgl_pool(ctx);
+ if (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 int add_comp_head(struct scatterlist *dst, u8 req_type)
+{
+ int head_size = TO_HEAD_SIZE(req_type);
+ const u8 *head = TO_HEAD(req_type);
+ int ret;
+
+ ret = sg_copy_from_buffer(dst, sg_nents(dst), head, head_size);
+ if (ret != head_size)
+ return -ENOMEM;
+
+ return head_size;
+}
+
+static size_t get_gzip_head_size(struct scatterlist *sgl)
+{
+ char buf[HZIP_GZIP_HEAD_BUF];
+
+ sg_copy_to_buffer(sgl, sg_nents(sgl), buf, sizeof(buf));
+
+ return __get_gzip_head_size(buf);
+}
+
+static size_t get_comp_head_size(struct scatterlist *src, u8 req_type)
+{
+ switch (req_type) {
+ case HZIP_ALG_TYPE_ZLIB:
+ return TO_HEAD_SIZE(HZIP_ALG_TYPE_ZLIB);
+ case HZIP_ALG_TYPE_GZIP:
+ return get_gzip_head_size(src);
+ default:
+ pr_err("request type does not support!\n");
+ return -EINVAL;
+ }
+}
+
+static int get_sg_skip_bytes(struct scatterlist *sgl, size_t bytes,
+ size_t remains, struct scatterlist **out)
+{
+#define SPLIT_NUM 2
+ size_t split_sizes[SPLIT_NUM];
+ int out_mapped_nents[SPLIT_NUM];
+
+ split_sizes[0] = bytes;
+ split_sizes[1] = remains;
+
+ return sg_split(sgl, 0, 0, SPLIT_NUM, split_sizes, out,
+ out_mapped_nents, GFP_KERNEL);
+}
+
+static struct hisi_zip_req *hisi_zip_create_req(struct acomp_req *req,
+ struct hisi_zip_qp_ctx *qp_ctx,
+ size_t head_size, bool is_comp)
+{
+ 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;
+ struct scatterlist *out[2];
+ struct scatterlist *sgl;
+ size_t len;
+ int ret, req_id;
+
+ /*
+ * remove/add zlib/gzip head, as hardware operations do not include
+ * comp head. so split req->src to get sgl without heads in acomp, or
+ * add comp head to req->dst ahead of that hardware output compressed
+ * data in sgl splited from req->dst without comp head.
+ */
+ if (is_comp) {
+ sgl = req->dst;
+ len = req->dlen - head_size;
+ } else {
+ sgl = req->src;
+ len = req->slen - head_size;
+ }
+
+ ret = get_sg_skip_bytes(sgl, head_size, len, out);
+ if (ret)
+ return ERR_PTR(ret);
+
+ /* sgl for comp head is useless, so free it now */
+ kfree(out[0]);
+
+ write_lock(&req_q->req_lock);
+
+ req_id = find_first_zero_bit(req_q->req_bitmap, req_q->size);
+ if (req_id >= req_q->size) {
+ write_unlock(&req_q->req_lock);
+ dev_dbg(&qp_ctx->qp->qm->pdev->dev, "req cache is full!\n");
+ kfree(out[1]);
+ return ERR_PTR(-EBUSY);
+ }
+ set_bit(req_id, req_q->req_bitmap);
+
+ req_cache = q + req_id;
+ req_cache->req_id = req_id;
+ req_cache->req = req;
+ if (is_comp) {
+ req_cache->src = req->src;
+ req_cache->dst = out[1];
+ req_cache->slen = req->slen;
+ req_cache->dlen = req->dlen - head_size;
+ } else {
+ req_cache->src = out[1];
+ req_cache->dst = req->dst;
+ req_cache->slen = req->slen - head_size;
+ req_cache->dlen = req->dlen;
+ }
+
+ write_unlock(&req_q->req_lock);
+
+ return req_cache;
+}
+
+static int hisi_zip_do_work(struct hisi_zip_req *req,
+ struct hisi_zip_qp_ctx *qp_ctx)
+{
+ struct hisi_zip_sqe *zip_sqe = &qp_ctx->zip_sqe;
+ struct hisi_qp *qp = qp_ctx->qp;
+ struct device *dev = &qp->qm->pdev->dev;
+ struct hisi_acc_sgl_pool *pool = &qp_ctx->sgl_pool;
+ dma_addr_t input;
+ dma_addr_t output;
+ int ret;
+
+ if (!req->src || !req->slen || !req->dst || !req->dlen)
+ return -EINVAL;
+
+ req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, req->src, pool,
+ req->req_id << 1, &input);
+ if (IS_ERR(req->hw_src))
+ return PTR_ERR(req->hw_src);
+ req->dma_src = input;
+
+ req->hw_dst = hisi_acc_sg_buf_map_to_hw_sgl(dev, req->dst, pool,
+ (req->req_id << 1) + 1,
+ &output);
+ if (IS_ERR(req->hw_dst)) {
+ ret = PTR_ERR(req->hw_dst);
+ goto err_unmap_input;
+ }
+ req->dma_dst = output;
+
+ hisi_zip_fill_sqe(zip_sqe, qp->req_type, input, output, req->slen,
+ req->dlen);
+ hisi_zip_config_buf_type(zip_sqe, HZIP_SGL);
+ hisi_zip_config_tag(zip_sqe, req->req_id);
+
+ /* send command to start a task */
+ ret = hisi_qp_send(qp, zip_sqe);
+ if (ret < 0)
+ goto err_unmap_output;
+
+ return -EINPROGRESS;
+
+err_unmap_output:
+ hisi_acc_sg_buf_unmap(dev, req->dst, req->hw_dst);
+err_unmap_input:
+ hisi_acc_sg_buf_unmap(dev, req->src, req->hw_src);
+ return ret;
+}
+
+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[QPC_COMP];
+ struct hisi_zip_req *req;
+ size_t head_size;
+ int ret;
+
+ /* let's output compression head now */
+ head_size = add_comp_head(acomp_req->dst, qp_ctx->qp->req_type);
+ if (head_size < 0)
+ return -ENOMEM;
+
+ req = hisi_zip_create_req(acomp_req, qp_ctx, head_size, true);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ ret = hisi_zip_do_work(req, qp_ctx);
+ if (ret != -EINPROGRESS)
+ 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[QPC_DECOMP];
+ struct hisi_zip_req *req;
+ size_t head_size;
+ int ret;
+
+ head_size = get_comp_head_size(acomp_req->src, qp_ctx->qp->req_type);
+
+ req = hisi_zip_create_req(acomp_req, qp_ctx, head_size, false);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ ret = hisi_zip_do_work(req, qp_ctx);
+ if (ret != -EINPROGRESS)
+ hisi_zip_remove_req(qp_ctx, req);
+
+ return ret;
+}
+
+static struct acomp_alg hisi_zip_acomp_zlib = {
+ .init = hisi_zip_acomp_init,
+ .exit = hisi_zip_acomp_exit,
+ .compress = hisi_zip_acompress,
+ .decompress = hisi_zip_adecompress,
+ .base = {
+ .cra_name = "zlib-deflate",
+ .cra_driver_name = "hisi-zlib-acomp",
+ .cra_module = THIS_MODULE,
+ .cra_priority = HZIP_ALG_PRIORITY,
+ .cra_ctxsize = sizeof(struct hisi_zip_ctx),
+ }
+};
+
+static struct acomp_alg hisi_zip_acomp_gzip = {
+ .init = hisi_zip_acomp_init,
+ .exit = hisi_zip_acomp_exit,
+ .compress = hisi_zip_acompress,
+ .decompress = hisi_zip_adecompress,
+ .base = {
+ .cra_name = "gzip",
+ .cra_driver_name = "hisi-gzip-acomp",
+ .cra_module = THIS_MODULE,
+ .cra_priority = HZIP_ALG_PRIORITY,
+ .cra_ctxsize = sizeof(struct hisi_zip_ctx),
+ }
+};
+
+int hisi_zip_register_to_crypto(void)
+{
+ int ret = 0;
+
+ ret = crypto_register_acomp(&hisi_zip_acomp_zlib);
+ if (ret) {
+ pr_err("Zlib acomp algorithm registration failed\n");
+ return ret;
+ }
+
+ ret = crypto_register_acomp(&hisi_zip_acomp_gzip);
+ if (ret) {
+ pr_err("Gzip acomp algorithm registration failed\n");
+ crypto_unregister_acomp(&hisi_zip_acomp_zlib);
+ }
+
+ return ret;
+}
+
+void hisi_zip_unregister_from_crypto(void)
+{
+ crypto_unregister_acomp(&hisi_zip_acomp_gzip);
+ crypto_unregister_acomp(&hisi_zip_acomp_zlib);
+}