Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 13:11:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

crypto: sun8i-ss - support hash algorithms

Browse Source 
The SS support multiples hash algorithms, this patch adds support for
MD5, SHA1, SHA224 and SHA256.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Corentin Labbe 2020-09-18 07:23:01 +00:00 committed by Herbert Xu
parent ac2614d721
commit d9b45418a9
5 changed files with 667 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/crypto/allwinner/Kconfig
View File

@ -93,3 +93,12 @@ config CRYPTO_DEV_SUN8I_SS_PRNG
help
Select this option if you want to provide kernel-side support for
the Pseudo-Random Number Generator found in the Security System.
config CRYPTO_DEV_SUN8I_SS_HASH
bool "Enable support for hash on sun8i-ss"
depends on CRYPTO_DEV_SUN8I_SS
select MD5
select SHA1
select SHA256
help
Say y to enable support for hash algorithms.

1
drivers/crypto/allwinner/sun8i-ss/Makefile
View File

@ -1,3 +1,4 @@
obj-$(CONFIG_CRYPTO_DEV_SUN8I_SS) += sun8i-ss.o
sun8i-ss-y += sun8i-ss-core.o sun8i-ss-cipher.o
sun8i-ss-$(CONFIG_CRYPTO_DEV_SUN8I_SS_PRNG) += sun8i-ss-prng.o
sun8i-ss-$(CONFIG_CRYPTO_DEV_SUN8I_SS_HASH) += sun8i-ss-hash.o

155
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
View File

@ -41,6 +41,8 @@ static const struct ss_variant ss_a80_variant = {
static const struct ss_variant ss_a83t_variant = {
.alg_cipher = { SS_ALG_AES, SS_ALG_DES, SS_ALG_3DES,
},
.alg_hash = { SS_ALG_MD5, SS_ALG_SHA1, SS_ALG_SHA224, SS_ALG_SHA256,
},
.op_mode = { SS_OP_ECB, SS_OP_CBC,
},
.ss_clks = {
@ -284,6 +286,128 @@ static struct sun8i_ss_alg_template ss_algs[] = {
}
},
#endif
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_HASH
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_MD5,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = MD5_DIGEST_SIZE,
.statesize = sizeof(struct md5_state),
.base = {
.cra_name = "md5",
.cra_driver_name = "md5-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA1,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA1_DIGEST_SIZE,
.statesize = sizeof(struct sha1_state),
.base = {
.cra_name = "sha1",
.cra_driver_name = "sha1-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA224,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA224_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "sha224-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA256,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
#endif
};
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
@ -311,6 +435,12 @@ static int sun8i_ss_debugfs_show(struct seq_file *seq, void *v)
ss_algs[i].alg.rng.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_bytes);
break;
case CRYPTO_ALG_TYPE_AHASH:
seq_printf(seq, "%s %s %lu %lu\n",
ss_algs[i].alg.hash.halg.base.cra_driver_name,
ss_algs[i].alg.hash.halg.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_fb);
break;
}
}
return 0;
@ -471,6 +601,26 @@ static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss)
ss_algs[i].ss = NULL;
}
break;
case CRYPTO_ALG_TYPE_AHASH:
id = ss_algs[i].ss_algo_id;
ss_method = ss->variant->alg_hash[id];
if (ss_method == SS_ID_NOTSUPP) {
dev_info(ss->dev,
"DEBUG: Algo of %s not supported\n",
ss_algs[i].alg.hash.halg.base.cra_name);
ss_algs[i].ss = NULL;
break;
}
dev_info(ss->dev, "Register %s\n",
ss_algs[i].alg.hash.halg.base.cra_name);
err = crypto_register_ahash(&ss_algs[i].alg.hash);
if (err) {
dev_err(ss->dev, "ERROR: Fail to register %s\n",
ss_algs[i].alg.hash.halg.base.cra_name);
ss_algs[i].ss = NULL;
return err;
}
break;
default:
ss_algs[i].ss = NULL;
dev_err(ss->dev, "ERROR: tried to register an unknown algo\n");
@ -497,6 +647,11 @@ static void sun8i_ss_unregister_algs(struct sun8i_ss_dev *ss)
ss_algs[i].alg.rng.base.cra_name);
crypto_unregister_rng(&ss_algs[i].alg.rng);
break;
case CRYPTO_ALG_TYPE_AHASH:
dev_info(ss->dev, "Unregister %d %s\n", i,
ss_algs[i].alg.hash.halg.base.cra_name);
crypto_unregister_ahash(&ss_algs[i].alg.hash);
break;
}
}
}

444
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c Normal file
View File

@ -0,0 +1,444 @@
// SPDX-License-Identifier: GPL-2.0
/*
* sun8i-ss-hash.c - hardware cryptographic offloader for
* Allwinner A80/A83T SoC
*
* Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
*
* This file add support for MD5 and SHA1/SHA224/SHA256.
*
* You could find the datasheet in Documentation/arm/sunxi.rst
*/
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/scatterlist.h>
#include <crypto/internal/hash.h>
#include <crypto/sha.h>
#include <crypto/md5.h>
#include "sun8i-ss.h"
int sun8i_ss_hash_crainit(struct crypto_tfm *tfm)
{
struct sun8i_ss_hash_tfm_ctx *op = crypto_tfm_ctx(tfm);
struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
struct sun8i_ss_alg_template *algt;
int err;
memset(op, 0, sizeof(struct sun8i_ss_hash_tfm_ctx));
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
op->ss = algt->ss;
op->enginectx.op.do_one_request = sun8i_ss_hash_run;
op->enginectx.op.prepare_request = NULL;
op->enginectx.op.unprepare_request = NULL;
/* FALLBACK */
op->fallback_tfm = crypto_alloc_ahash(crypto_tfm_alg_name(tfm), 0,
CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(op->fallback_tfm)) {
dev_err(algt->ss->dev, "Fallback driver could no be loaded\n");
return PTR_ERR(op->fallback_tfm);
}
if (algt->alg.hash.halg.statesize < crypto_ahash_statesize(op->fallback_tfm))
algt->alg.hash.halg.statesize = crypto_ahash_statesize(op->fallback_tfm);
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
sizeof(struct sun8i_ss_hash_reqctx) +
crypto_ahash_reqsize(op->fallback_tfm));
dev_info(op->ss->dev, "Fallback for %s is %s\n",
crypto_tfm_alg_driver_name(tfm),
crypto_tfm_alg_driver_name(&op->fallback_tfm->base));
err = pm_runtime_get_sync(op->ss->dev);
if (err < 0)
goto error_pm;
return 0;
error_pm:
pm_runtime_put_noidle(op->ss->dev);
crypto_free_ahash(op->fallback_tfm);
return err;
}
void sun8i_ss_hash_craexit(struct crypto_tfm *tfm)
{
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_tfm_ctx(tfm);
crypto_free_ahash(tfmctx->fallback_tfm);
pm_runtime_put_sync_suspend(tfmctx->ss->dev);
}
int sun8i_ss_hash_init(struct ahash_request *areq)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
memset(rctx, 0, sizeof(struct sun8i_ss_hash_reqctx));
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_ahash_init(&rctx->fallback_req);
}
int sun8i_ss_hash_export(struct ahash_request *areq, void *out)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_ahash_export(&rctx->fallback_req, out);
}
int sun8i_ss_hash_import(struct ahash_request *areq, const void *in)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_ahash_import(&rctx->fallback_req, in);
}
int sun8i_ss_hash_final(struct ahash_request *areq)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
struct sun8i_ss_alg_template *algt;
#endif
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags &
CRYPTO_TFM_REQ_MAY_SLEEP;
rctx->fallback_req.result = areq->result;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
algt->stat_fb++;
#endif
return crypto_ahash_final(&rctx->fallback_req);
}
int sun8i_ss_hash_update(struct ahash_request *areq)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags &
CRYPTO_TFM_REQ_MAY_SLEEP;
rctx->fallback_req.nbytes = areq->nbytes;
rctx->fallback_req.src = areq->src;
return crypto_ahash_update(&rctx->fallback_req);
}
int sun8i_ss_hash_finup(struct ahash_request *areq)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
struct sun8i_ss_alg_template *algt;
#endif
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags &
CRYPTO_TFM_REQ_MAY_SLEEP;
rctx->fallback_req.nbytes = areq->nbytes;
rctx->fallback_req.src = areq->src;
rctx->fallback_req.result = areq->result;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
algt->stat_fb++;
#endif
return crypto_ahash_finup(&rctx->fallback_req);
}
static int sun8i_ss_hash_digest_fb(struct ahash_request *areq)
{
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun8i_ss_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
struct sun8i_ss_alg_template *algt;
#endif
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
rctx->fallback_req.base.flags = areq->base.flags &
CRYPTO_TFM_REQ_MAY_SLEEP;
rctx->fallback_req.nbytes = areq->nbytes;
rctx->fallback_req.src = areq->src;
rctx->fallback_req.result = areq->result;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
algt->stat_fb++;
#endif
return crypto_ahash_digest(&rctx->fallback_req);
}
static int sun8i_ss_run_hash_task(struct sun8i_ss_dev *ss,
struct sun8i_ss_hash_reqctx *rctx,
const char *name)
{
int flow = rctx->flow;
u32 v = SS_START;
int i;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
ss->flows[flow].stat_req++;
#endif
/* choose between stream0/stream1 */
if (flow)
v |= SS_FLOW1;
else
v |= SS_FLOW0;
v |= rctx->method;
for (i = 0; i < MAX_SG; i++) {
if (!rctx->t_dst[i].addr)
break;
mutex_lock(&ss->mlock);
if (i > 0) {
v |= BIT(17);
writel(rctx->t_dst[i - 1].addr, ss->base + SS_KEY_ADR_REG);
writel(rctx->t_dst[i - 1].addr, ss->base + SS_IV_ADR_REG);
}
dev_dbg(ss->dev,
"Processing SG %d on flow %d %s ctl=%x %d to %d method=%x src=%x dst=%x\n",
i, flow, name, v,
rctx->t_src[i].len, rctx->t_dst[i].len,
rctx->method, rctx->t_src[i].addr, rctx->t_dst[i].addr);
writel(rctx->t_src[i].addr, ss->base + SS_SRC_ADR_REG);
writel(rctx->t_dst[i].addr, ss->base + SS_DST_ADR_REG);
writel(rctx->t_src[i].len, ss->base + SS_LEN_ADR_REG);
writel(BIT(0) | BIT(1), ss->base + SS_INT_CTL_REG);
reinit_completion(&ss->flows[flow].complete);
ss->flows[flow].status = 0;
wmb();
writel(v, ss->base + SS_CTL_REG);
mutex_unlock(&ss->mlock);
wait_for_completion_interruptible_timeout(&ss->flows[flow].complete,
msecs_to_jiffies(2000));
if (ss->flows[flow].status == 0) {
dev_err(ss->dev, "DMA timeout for %s\n", name);
return -EFAULT;
}
}
return 0;
}
static bool sun8i_ss_hash_need_fallback(struct ahash_request *areq)
{
struct scatterlist *sg;
if (areq->nbytes == 0)
return true;
/* we need to reserve one SG for the padding one */
if (sg_nents(areq->src) > MAX_SG - 1)
return true;
sg = areq->src;
while (sg) {
/* SS can operate hash only on full block size
* since SS support only MD5,sha1,sha224 and sha256, blocksize
* is always 64
* TODO: handle request if last SG is not len%64
* but this will need to copy data on a new SG of size=64
*/
if (sg->length % 64 || !IS_ALIGNED(sg->offset, sizeof(u32)))
return true;
sg = sg_next(sg);
}
return false;
}
int sun8i_ss_hash_digest(struct ahash_request *areq)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct sun8i_ss_alg_template *algt;
struct sun8i_ss_dev *ss;
struct crypto_engine *engine;
struct scatterlist *sg;
int nr_sgs, e, i;
if (sun8i_ss_hash_need_fallback(areq))
return sun8i_ss_hash_digest_fb(areq);
nr_sgs = sg_nents(areq->src);
if (nr_sgs > MAX_SG - 1)
return sun8i_ss_hash_digest_fb(areq);
for_each_sg(areq->src, sg, nr_sgs, i) {
if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
return sun8i_ss_hash_digest_fb(areq);
}
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
ss = algt->ss;
e = sun8i_ss_get_engine_number(ss);
rctx->flow = e;
engine = ss->flows[e].engine;
return crypto_transfer_hash_request_to_engine(engine, areq);
}
/* sun8i_ss_hash_run - run an ahash request
* Send the data of the request to the SS along with an extra SG with padding
*/
int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
{
struct ahash_request *areq = container_of(breq, struct ahash_request, base);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
struct sun8i_ss_hash_reqctx *rctx = ahash_request_ctx(areq);
struct sun8i_ss_alg_template *algt;
struct sun8i_ss_dev *ss;
struct scatterlist *sg;
int nr_sgs, err, digestsize;
unsigned int len;
u64 fill, min_fill, byte_count;
void *pad, *result;
int j, i, todo;
__be64 *bebits;
__le64 *lebits;
dma_addr_t addr_res, addr_pad;
__le32 *bf;
algt = container_of(alg, struct sun8i_ss_alg_template, alg.hash);
ss = algt->ss;
digestsize = algt->alg.hash.halg.digestsize;
if (digestsize == SHA224_DIGEST_SIZE)
digestsize = SHA256_DIGEST_SIZE;
/* the padding could be up to two block. */
pad = kzalloc(algt->alg.hash.halg.base.cra_blocksize * 2, GFP_KERNEL | GFP_DMA);
if (!pad)
return -ENOMEM;
bf = (__le32 *)pad;
result = kzalloc(digestsize, GFP_KERNEL | GFP_DMA);
if (!result)
return -ENOMEM;
for (i = 0; i < MAX_SG; i++) {
rctx->t_dst[i].addr = 0;
rctx->t_dst[i].len = 0;
}
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
algt->stat_req++;
#endif
rctx->method = ss->variant->alg_hash[algt->ss_algo_id];
nr_sgs = dma_map_sg(ss->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend;
}
addr_res = dma_map_single(ss->dev, result, digestsize, DMA_FROM_DEVICE);
if (dma_mapping_error(ss->dev, addr_res)) {
dev_err(ss->dev, "DMA map dest\n");
err = -EINVAL;
goto theend;
}
len = areq->nbytes;
for_each_sg(areq->src, sg, nr_sgs, i) {
rctx->t_src[i].addr = sg_dma_address(sg);
todo = min(len, sg_dma_len(sg));
rctx->t_src[i].len = todo / 4;
len -= todo;
rctx->t_dst[i].addr = addr_res;
rctx->t_dst[i].len = digestsize / 4;
}
if (len > 0) {
dev_err(ss->dev, "remaining len %d\n", len);
err = -EINVAL;
goto theend;
}
byte_count = areq->nbytes;
j = 0;
bf[j++] = cpu_to_le32(0x80);
fill = 64 - (byte_count % 64);
min_fill = 3 * sizeof(u32);
if (fill < min_fill)
fill += 64;
j += (fill - min_fill) / sizeof(u32);
switch (algt->ss_algo_id) {
case SS_ID_HASH_MD5:
lebits = (__le64 *)&bf[j];
*lebits = cpu_to_le64(byte_count << 3);
j += 2;
break;
case SS_ID_HASH_SHA1:
case SS_ID_HASH_SHA224:
case SS_ID_HASH_SHA256:
bebits = (__be64 *)&bf[j];
*bebits = cpu_to_be64(byte_count << 3);
j += 2;
break;
}
addr_pad = dma_map_single(ss->dev, pad, j * 4, DMA_TO_DEVICE);
rctx->t_src[i].addr = addr_pad;
rctx->t_src[i].len = j;
rctx->t_dst[i].addr = addr_res;
rctx->t_dst[i].len = digestsize / 4;
if (dma_mapping_error(ss->dev, addr_pad)) {
dev_err(ss->dev, "DMA error on padding SG\n");
err = -EINVAL;
goto theend;
}
err = sun8i_ss_run_hash_task(ss, rctx, crypto_tfm_alg_name(areq->base.tfm));
dma_unmap_single(ss->dev, addr_pad, j * 4, DMA_TO_DEVICE);
dma_unmap_sg(ss->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
dma_unmap_single(ss->dev, addr_res, digestsize, DMA_FROM_DEVICE);
kfree(pad);
memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
kfree(result);
theend:
crypto_finalize_hash_request(engine, breq, err);
return 0;
}

58
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
View File

@ -13,6 +13,9 @@
#include <linux/atomic.h>
#include <linux/debugfs.h>
#include <linux/crypto.h>
#include <crypto/internal/hash.h>
#include <crypto/md5.h>
#include <crypto/sha.h>
#define SS_START 1
@ -22,7 +25,11 @@
#define SS_ALG_AES 0
#define SS_ALG_DES (1 << 2)
#define SS_ALG_3DES (2 << 2)
#define SS_ALG_MD5 (3 << 2)
#define SS_ALG_PRNG (4 << 2)
#define SS_ALG_SHA1 (6 << 2)
#define SS_ALG_SHA224 (7 << 2)
#define SS_ALG_SHA256 (8 << 2)
#define SS_CTL_REG 0x00
#define SS_INT_CTL_REG 0x04
@ -51,6 +58,12 @@
#define SS_OP_ECB 0
#define SS_OP_CBC (1 << 13)
#define SS_ID_HASH_MD5 0
#define SS_ID_HASH_SHA1 1
#define SS_ID_HASH_SHA224 2
#define SS_ID_HASH_SHA256 3
#define SS_ID_HASH_MAX 4
#define SS_FLOW0 BIT(30)
#define SS_FLOW1 BIT(31)
@ -84,11 +97,14 @@ struct ss_clock {
* struct ss_variant - Describe SS capability for each variant hardware
* @alg_cipher: list of supported ciphers. for each SS_ID_ this will give the
* coresponding SS_ALG_XXX value
* @alg_hash: list of supported hashes. for each SS_ID_ this will give the
* corresponding SS_ALG_XXX value
* @op_mode: list of supported block modes
* @ss_clks! list of clock needed by this variant
*/
struct ss_variant {
char alg_cipher[SS_ID_CIPHER_MAX];
char alg_hash[SS_ID_HASH_MAX];
u32 op_mode[SS_ID_OP_MAX];
struct ss_clock ss_clks[SS_MAX_CLOCKS];
};
@ -198,6 +214,36 @@ struct sun8i_ss_rng_tfm_ctx {
unsigned int slen;
};
/*
* struct sun8i_ss_hash_tfm_ctx - context for an ahash TFM
* @enginectx: crypto_engine used by this TFM
* @fallback_tfm: pointer to the fallback TFM
* @ss: pointer to the private data of driver handling this TFM
*
* enginectx must be the first element
*/
struct sun8i_ss_hash_tfm_ctx {
struct crypto_engine_ctx enginectx;
struct crypto_ahash *fallback_tfm;
struct sun8i_ss_dev *ss;
};
/*
* struct sun8i_ss_hash_reqctx - context for an ahash request
* @t_src: list of DMA address and size for source SGs
* @t_dst: list of DMA address and size for destination SGs
* @fallback_req: pre-allocated fallback request
* @method: the register value for the algorithm used by this request
* @flow: the flow to use for this request
*/
struct sun8i_ss_hash_reqctx {
struct sginfo t_src[MAX_SG];
struct sginfo t_dst[MAX_SG];
struct ahash_request fallback_req;
u32 method;
int flow;
};
/*
* struct sun8i_ss_alg_template - crypto_alg template
* @type: the CRYPTO_ALG_TYPE for this template
@ -218,6 +264,7 @@ struct sun8i_ss_alg_template {
union {
struct skcipher_alg skcipher;
struct rng_alg rng;
struct ahash_alg hash;
} alg;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
unsigned long stat_req;
@ -245,3 +292,14 @@ int sun8i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
int sun8i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
int sun8i_ss_prng_init(struct crypto_tfm *tfm);
void sun8i_ss_prng_exit(struct crypto_tfm *tfm);
int sun8i_ss_hash_crainit(struct crypto_tfm *tfm);
void sun8i_ss_hash_craexit(struct crypto_tfm *tfm);
int sun8i_ss_hash_init(struct ahash_request *areq);
int sun8i_ss_hash_export(struct ahash_request *areq, void *out);
int sun8i_ss_hash_import(struct ahash_request *areq, const void *in);
int sun8i_ss_hash_final(struct ahash_request *areq);
int sun8i_ss_hash_update(struct ahash_request *areq);
int sun8i_ss_hash_finup(struct ahash_request *areq);
int sun8i_ss_hash_digest(struct ahash_request *areq);
int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq);