summaryrefslogtreecommitdiff
path: root/drivers/crypto/hisilicon/zip/zip_crypto.c
blob: c650c741a18d8ab7ec5ae9ccd547d516132fba17 (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
// 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;
	rwlock_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;

	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");
		return ERR_PTR(-EAGAIN);
	}
	set_bit(req_id, req_q->req_bitmap);

	write_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;

	write_lock(&req_q->req_lock);
	clear_bit(req->req_id, req_q->req_bitmap);
	write_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 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);
	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);
	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);
	ret = hisi_qp_send(qp, &zip_sqe);
	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);
err_unmap_input:
	hisi_acc_sg_buf_unmap(dev, a_req->src, req->hw_src);
	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->src, req->hw_src);
	hisi_acc_sg_buf_unmap(dev, acomp_req->dst, req->hw_dst);

	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;
		}
		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_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_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);
}