diff options
Diffstat (limited to 'drivers/crypto/sunxi-ss')
| -rw-r--r-- | drivers/crypto/sunxi-ss/Makefile | 1 | ||||
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss-cipher.c | 53 | ||||
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss-core.c | 6 | ||||
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss-hash.c | 6 | ||||
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss.h | 3 |
5 files changed, 35 insertions, 34 deletions
diff --git a/drivers/crypto/sunxi-ss/Makefile b/drivers/crypto/sunxi-ss/Makefile index ccb893219079..c0a2797d3168 100644 --- a/drivers/crypto/sunxi-ss/Makefile +++ b/drivers/crypto/sunxi-ss/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sun4i-ss.o sun4i-ss-y += sun4i-ss-core.o sun4i-ss-hash.o sun4i-ss-cipher.o sun4i-ss-$(CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG) += sun4i-ss-prng.o diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c index b060a0810934..4ab14d58e85b 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * sun4i-ss-cipher.c - hardware cryptographic accelerator for Allwinner A20 SoC * @@ -8,15 +9,10 @@ * Add support also for DES and 3DES in CBC and ECB mode. * * You could find the datasheet in Documentation/arm/sunxi/README - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include "sun4i-ss.h" -static int sun4i_ss_opti_poll(struct skcipher_request *areq) +static int noinline_for_stack sun4i_ss_opti_poll(struct skcipher_request *areq) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); struct sun4i_tfm_ctx *op = crypto_skcipher_ctx(tfm); @@ -118,6 +114,29 @@ release_ss: return err; } + +static int noinline_for_stack sun4i_ss_cipher_poll_fallback(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun4i_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun4i_cipher_req_ctx *ctx = skcipher_request_ctx(areq); + SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, op->fallback_tfm); + int err; + + skcipher_request_set_sync_tfm(subreq, op->fallback_tfm); + skcipher_request_set_callback(subreq, areq->base.flags, NULL, + NULL); + skcipher_request_set_crypt(subreq, areq->src, areq->dst, + areq->cryptlen, areq->iv); + if (ctx->mode & SS_DECRYPTION) + err = crypto_skcipher_decrypt(subreq); + else + err = crypto_skcipher_encrypt(subreq); + skcipher_request_zero(subreq); + + return err; +} + /* Generic function that support SG with size not multiple of 4 */ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) { @@ -144,8 +163,6 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) unsigned int todo; struct sg_mapping_iter mi, mo; unsigned int oi, oo; /* offset for in and out */ - char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */ - char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */ unsigned int ob = 0; /* offset in buf */ unsigned int obo = 0; /* offset in bufo*/ unsigned int obl = 0; /* length of data in bufo */ @@ -182,20 +199,8 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) if (no_chunk == 1 && !need_fallback) return sun4i_ss_opti_poll(areq); - if (need_fallback) { - SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, op->fallback_tfm); - skcipher_request_set_sync_tfm(subreq, op->fallback_tfm); - skcipher_request_set_callback(subreq, areq->base.flags, NULL, - NULL); - skcipher_request_set_crypt(subreq, areq->src, areq->dst, - areq->cryptlen, areq->iv); - if (ctx->mode & SS_DECRYPTION) - err = crypto_skcipher_decrypt(subreq); - else - err = crypto_skcipher_encrypt(subreq); - skcipher_request_zero(subreq); - return err; - } + if (need_fallback) + return sun4i_ss_cipher_poll_fallback(areq); spin_lock_irqsave(&ss->slock, flags); @@ -228,6 +233,8 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) while (oleft) { if (ileft) { + char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */ + /* * todo is the number of consecutive 4byte word that we * can read from current SG @@ -285,6 +292,8 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) oo = 0; } } else { + char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */ + /* * read obl bytes in bufo, we read at maximum for * emptying the device diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-core.c b/drivers/crypto/sunxi-ss/sun4i-ss-core.c index 05b3d3c32f6d..cdcda7f059c8 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-core.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * sun4i-ss-core.c - hardware cryptographic accelerator for Allwinner A20 SoC * @@ -6,11 +7,6 @@ * Core file which registers crypto algorithms supported by the SS. * * You could find a link for the datasheet in Documentation/arm/sunxi/README - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/clk.h> #include <linux/crypto.h> diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c index f6936bb3b7be..d2b6d89aad28 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * sun4i-ss-hash.c - hardware cryptographic accelerator for Allwinner A20 SoC * @@ -6,11 +7,6 @@ * This file add support for MD5 and SHA1. * * You could find the datasheet in Documentation/arm/sunxi/README - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include "sun4i-ss.h" #include <linux/scatterlist.h> diff --git a/drivers/crypto/sunxi-ss/sun4i-ss.h b/drivers/crypto/sunxi-ss/sun4i-ss.h index 8c4ec9e93565..68b82d1a6303 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss.h +++ b/drivers/crypto/sunxi-ss/sun4i-ss.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * sun4i-ss.h - hardware cryptographic accelerator for Allwinner A20 SoC * @@ -8,8 +9,6 @@ * Support DES and 3DES * * You could find the datasheet in Documentation/arm/sunxi/README - * - * Licensed under the GPL-2. */ #include <linux/clk.h> |