summaryrefslogtreecommitdiff
path: root/drivers/crypto/hisilicon/zip/zip_crypto.c
blob: 59023545a1c4b6bf65181d20e852d6790a7b1a26 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
// 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 == 0)
				return ret;

			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;
	int 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, (size_t)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);
}