* [PATCH v6 01/18] crypto: sun8i-ss: Add SS_START define
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 02/18] crypto: sun8i-ss: Add support for the PRNG Corentin Labbe
` (16 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
Instead of using an hardcoded value, let's use a defined value for
SS_START.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 2 +-
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index 9a23515783a6..97012128385f 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -61,7 +61,7 @@ int sun8i_ss_run_task(struct sun8i_ss_dev *ss, struct sun8i_cipher_req_ctx *rctx
const char *name)
{
int flow = rctx->flow;
- u32 v = 1;
+ u32 v = SS_START;
int i;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
index 0405767f1f7e..f3ffaea3a59f 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
@@ -13,6 +13,8 @@
#include <linux/debugfs.h>
#include <linux/crypto.h>
+#define SS_START 1
+
#define SS_ENCRYPTION 0
#define SS_DECRYPTION BIT(6)
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 02/18] crypto: sun8i-ss: Add support for the PRNG
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 01/18] crypto: sun8i-ss: Add SS_START define Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 03/18] crypto: sun8i-ss: support hash algorithms Corentin Labbe
` (15 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch had support for the PRNG present in the SS.
The output was tested with rngtest without any failure.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 8 +
drivers/crypto/allwinner/sun8i-ss/Makefile | 1 +
.../crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 39 ++++
.../crypto/allwinner/sun8i-ss/sun8i-ss-prng.c | 173 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 25 +++
5 files changed, 246 insertions(+)
create mode 100644 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c
diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index 96fed786ee75..b5f4f1c090ce 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -104,3 +104,11 @@ config CRYPTO_DEV_SUN8I_SS_DEBUG
Say y to enable sun8i-ss debug stats.
This will create /sys/kernel/debug/sun8i-ss/stats for displaying
the number of requests per flow and per algorithm.
+
+config CRYPTO_DEV_SUN8I_SS_PRNG
+ bool "Support for Allwinner Security System PRNG"
+ depends on CRYPTO_DEV_SUN8I_SS
+ select CRYPTO_RNG
+ help
+ Select this option if you want to provide kernel-side support for
+ the Pseudo-Random Number Generator found in the Security System.
diff --git a/drivers/crypto/allwinner/sun8i-ss/Makefile b/drivers/crypto/allwinner/sun8i-ss/Makefile
index add7b0543fd5..49f2f912c816 100644
--- a/drivers/crypto/allwinner/sun8i-ss/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ss/Makefile
@@ -1,2 +1,3 @@
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
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index 97012128385f..ae8321f9a1db 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
+#include <crypto/internal/rng.h>
#include <crypto/internal/skcipher.h>
#include "sun8i-ss.h"
@@ -264,6 +265,25 @@ static struct sun8i_ss_alg_template ss_algs[] = {
.decrypt = sun8i_ss_skdecrypt,
}
},
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_PRNG
+{
+ .type = CRYPTO_ALG_TYPE_RNG,
+ .alg.rng = {
+ .base = {
+ .cra_name = "stdrng",
+ .cra_driver_name = "sun8i-ss-prng",
+ .cra_priority = 300,
+ .cra_ctxsize = sizeof(struct sun8i_ss_rng_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ss_prng_init,
+ .cra_exit = sun8i_ss_prng_exit,
+ },
+ .generate = sun8i_ss_prng_generate,
+ .seed = sun8i_ss_prng_seed,
+ .seedsize = PRNG_SEED_SIZE,
+ }
+},
+#endif
};
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
@@ -285,6 +305,12 @@ static int sun8i_ss_dbgfs_read(struct seq_file *seq, void *v)
ss_algs[i].alg.skcipher.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_fb);
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ seq_printf(seq, "%s %s %lu %lu\n",
+ ss_algs[i].alg.rng.base.cra_driver_name,
+ ss_algs[i].alg.rng.base.cra_name,
+ ss_algs[i].stat_req, ss_algs[i].stat_bytes);
+ break;
}
}
return 0;
@@ -448,6 +474,14 @@ static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss)
return err;
}
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ err = crypto_register_rng(&ss_algs[i].alg.rng);
+ if (err) {
+ dev_err(ss->dev, "Fail to register %s\n",
+ ss_algs[i].alg.rng.base.cra_name);
+ ss_algs[i].ss = NULL;
+ }
+ break;
default:
ss_algs[i].ss = NULL;
dev_err(ss->dev, "ERROR: tried to register an unknown algo\n");
@@ -469,6 +503,11 @@ static void sun8i_ss_unregister_algs(struct sun8i_ss_dev *ss)
ss_algs[i].alg.skcipher.base.cra_name);
crypto_unregister_skcipher(&ss_algs[i].alg.skcipher);
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ dev_info(ss->dev, "Unregister %d %s\n", i,
+ ss_algs[i].alg.rng.base.cra_name);
+ crypto_unregister_rng(&ss_algs[i].alg.rng);
+ break;
}
}
}
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c
new file mode 100644
index 000000000000..17b9ed122c52
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sun8i-ss-prng.c - hardware cryptographic offloader for
+ * Allwinner A80/A83T SoC
+ *
+ * Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
+ *
+ * This file handle the PRNG found in the SS
+ *
+ * You could find a link for the datasheet in Documentation/arm/sunxi.rst
+ */
+#include "sun8i-ss.h"
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <crypto/internal/rng.h>
+
+int sun8i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed,
+ unsigned int slen)
+{
+ struct sun8i_ss_rng_tfm_ctx *ctx = crypto_rng_ctx(tfm);
+
+ if (ctx->seed && ctx->slen != slen) {
+ memzero_explicit(ctx->seed, ctx->slen);
+ kfree(ctx->seed);
+ ctx->slen = 0;
+ ctx->seed = NULL;
+ }
+ if (!ctx->seed)
+ ctx->seed = kmalloc(slen, GFP_KERNEL | GFP_DMA);
+ if (!ctx->seed)
+ return -ENOMEM;
+
+ memcpy(ctx->seed, seed, slen);
+ ctx->slen = slen;
+
+ return 0;
+}
+
+int sun8i_ss_prng_init(struct crypto_tfm *tfm)
+{
+ struct sun8i_ss_rng_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ memset(ctx, 0, sizeof(struct sun8i_ss_rng_tfm_ctx));
+ return 0;
+}
+
+void sun8i_ss_prng_exit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ss_rng_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ memzero_explicit(ctx->seed, ctx->slen);
+ kfree(ctx->seed);
+ ctx->seed = NULL;
+ ctx->slen = 0;
+}
+
+int sun8i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int dlen)
+{
+ struct sun8i_ss_rng_tfm_ctx *ctx = crypto_rng_ctx(tfm);
+ struct rng_alg *alg = crypto_rng_alg(tfm);
+ struct sun8i_ss_alg_template *algt;
+ struct sun8i_ss_dev *ss;
+ dma_addr_t dma_iv, dma_dst;
+ unsigned int todo;
+ int err = 0;
+ int flow;
+ void *d;
+ u32 v;
+
+ algt = container_of(alg, struct sun8i_ss_alg_template, alg.rng);
+ ss = algt->ss;
+
+ if (ctx->slen == 0) {
+ dev_err(ss->dev, "The PRNG is not seeded\n");
+ return -EINVAL;
+ }
+
+ /* The SS does not give an updated seed, so we need to get a new one.
+ * So we will ask for an extra PRNG_SEED_SIZE data.
+ * We want dlen + seedsize rounded up to a multiple of PRNG_DATA_SIZE
+ */
+ todo = dlen + PRNG_SEED_SIZE + PRNG_DATA_SIZE;
+ todo -= todo % PRNG_DATA_SIZE;
+
+ d = kzalloc(todo, GFP_KERNEL | GFP_DMA);
+ if (!d)
+ return -ENOMEM;
+
+ flow = sun8i_ss_get_engine_number(ss);
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
+ algt->stat_req++;
+ algt->stat_bytes += todo;
+#endif
+
+ v = SS_ALG_PRNG | SS_PRNG_CONTINUE | SS_START;
+ if (flow)
+ v |= SS_FLOW1;
+ else
+ v |= SS_FLOW0;
+
+ dma_iv = dma_map_single(ss->dev, ctx->seed, ctx->slen, DMA_TO_DEVICE);
+ if (dma_mapping_error(ss->dev, dma_iv)) {
+ dev_err(ss->dev, "Cannot DMA MAP IV\n");
+ return -EFAULT;
+ }
+
+ dma_dst = dma_map_single(ss->dev, d, todo, DMA_FROM_DEVICE);
+ if (dma_mapping_error(ss->dev, dma_dst)) {
+ dev_err(ss->dev, "Cannot DMA MAP DST\n");
+ err = -EFAULT;
+ goto err_iv;
+ }
+
+ err = pm_runtime_get_sync(ss->dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(ss->dev);
+ goto err_pm;
+ }
+ err = 0;
+
+ mutex_lock(&ss->mlock);
+ writel(dma_iv, ss->base + SS_IV_ADR_REG);
+ /* the PRNG act badly (failing rngtest) without SS_KEY_ADR_REG set */
+ writel(dma_iv, ss->base + SS_KEY_ADR_REG);
+ writel(dma_dst, ss->base + SS_DST_ADR_REG);
+ writel(todo / 4, ss->base + SS_LEN_ADR_REG);
+
+ reinit_completion(&ss->flows[flow].complete);
+ ss->flows[flow].status = 0;
+ /* Be sure all data is written before enabling the task */
+ wmb();
+
+ writel(v, ss->base + SS_CTL_REG);
+
+ wait_for_completion_interruptible_timeout(&ss->flows[flow].complete,
+ msecs_to_jiffies(todo));
+ if (ss->flows[flow].status == 0) {
+ dev_err(ss->dev, "DMA timeout for PRNG (size=%u)\n", todo);
+ err = -EFAULT;
+ }
+ /* Since cipher and hash use the linux/cryptoengine and that we have
+ * a cryptoengine per flow, we are sure that they will issue only one
+ * request per flow.
+ * Since the cryptoengine wait for completion before submitting a new
+ * one, the mlock could be left just after the final writel.
+ * But cryptoengine cannot handle crypto_rng, so we need to be sure
+ * nothing will use our flow.
+ * The easiest way is to grab mlock until the hardware end our requests.
+ * We could have used a per flow lock, but this would increase
+ * complexity.
+ * The drawback is that no request could be handled for the other flow.
+ */
+ mutex_unlock(&ss->mlock);
+
+ pm_runtime_put(ss->dev);
+
+err_pm:
+ dma_unmap_single(ss->dev, dma_dst, todo, DMA_FROM_DEVICE);
+err_iv:
+ dma_unmap_single(ss->dev, dma_iv, ctx->slen, DMA_TO_DEVICE);
+
+ if (!err) {
+ memcpy(dst, d, dlen);
+ /* Update seed */
+ memcpy(ctx->seed, d + dlen, ctx->slen);
+ }
+ memzero_explicit(d, todo);
+ kfree(d);
+
+ return err;
+}
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
index f3ffaea3a59f..adf2ee2395c1 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
@@ -8,6 +8,7 @@
#include <crypto/aes.h>
#include <crypto/des.h>
#include <crypto/engine.h>
+#include <crypto/rng.h>
#include <crypto/skcipher.h>
#include <linux/atomic.h>
#include <linux/debugfs.h>
@@ -21,6 +22,7 @@
#define SS_ALG_AES 0
#define SS_ALG_DES (1 << 2)
#define SS_ALG_3DES (2 << 2)
+#define SS_ALG_PRNG (4 << 2)
#define SS_CTL_REG 0x00
#define SS_INT_CTL_REG 0x04
@@ -52,6 +54,8 @@
#define SS_FLOW0 BIT(30)
#define SS_FLOW1 BIT(31)
+#define SS_PRNG_CONTINUE BIT(18)
+
#define MAX_SG 8
#define MAXFLOW 2
@@ -61,6 +65,9 @@
#define SS_DIE_ID_SHIFT 20
#define SS_DIE_ID_MASK 0x07
+#define PRNG_DATA_SIZE (160 / 8)
+#define PRNG_SEED_SIZE DIV_ROUND_UP(175, 8)
+
/*
* struct ss_clock - Describe clocks used by sun8i-ss
* @name: Name of clock needed by this variant
@@ -181,6 +188,16 @@ struct sun8i_cipher_tfm_ctx {
struct crypto_skcipher *fallback_tfm;
};
+/*
+ * struct sun8i_ss_prng_ctx - context for PRNG TFM
+ * @seed: The seed to use
+ * @slen: The size of the seed
+ */
+struct sun8i_ss_rng_tfm_ctx {
+ void *seed;
+ unsigned int slen;
+};
+
/*
* struct sun8i_ss_alg_template - crypto_alg template
* @type: the CRYPTO_ALG_TYPE for this template
@@ -191,6 +208,7 @@ struct sun8i_cipher_tfm_ctx {
* @alg: one of sub struct must be used
* @stat_req: number of request done on this template
* @stat_fb: number of request which has fallbacked
+ * @stat_bytes: total data size done by this template
*/
struct sun8i_ss_alg_template {
u32 type;
@@ -199,10 +217,12 @@ struct sun8i_ss_alg_template {
struct sun8i_ss_dev *ss;
union {
struct skcipher_alg skcipher;
+ struct rng_alg rng;
} alg;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
unsigned long stat_req;
unsigned long stat_fb;
+ unsigned long stat_bytes;
#endif
};
@@ -220,3 +240,8 @@ int sun8i_ss_skencrypt(struct skcipher_request *areq);
int sun8i_ss_get_engine_number(struct sun8i_ss_dev *ss);
int sun8i_ss_run_task(struct sun8i_ss_dev *ss, struct sun8i_cipher_req_ctx *rctx, const char *name);
+int sun8i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int dlen);
+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);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 03/18] crypto: sun8i-ss: support hash algorithms
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 01/18] crypto: sun8i-ss: Add SS_START define Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 02/18] crypto: sun8i-ss: Add support for the PRNG Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 04/18] crypto: sun8i-ss: fix a trivial typo Corentin Labbe
` (14 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
The SS support multiples hash algorithms, this patch adds support for
MD5, SHA1, SHA224 and SHA256.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 9 +
drivers/crypto/allwinner/sun8i-ss/Makefile | 1 +
.../crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 155 ++++++
.../crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 444 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 58 +++
5 files changed, 667 insertions(+)
create mode 100644 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index b5f4f1c090ce..b346850a91b9 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -112,3 +112,12 @@ 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.
diff --git a/drivers/crypto/allwinner/sun8i-ss/Makefile b/drivers/crypto/allwinner/sun8i-ss/Makefile
index 49f2f912c816..aabfd893c817 100644
--- a/drivers/crypto/allwinner/sun8i-ss/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ss/Makefile
@@ -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
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index ae8321f9a1db..5cf00d03be1f 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -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_dbgfs_read(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;
@@ -482,6 +612,26 @@ 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");
@@ -508,6 +658,11 @@ 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;
}
}
}
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
new file mode 100644
index 000000000000..44bfd7c72922
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
@@ -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;
+}
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
index adf2ee2395c1..377ea7acb54d 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
@@ -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);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 04/18] crypto: sun8i-ss: fix a trivial typo
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (2 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 03/18] crypto: sun8i-ss: support hash algorithms Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 05/18] crypto: sun8i-ss: Add more comment on some structures Corentin Labbe
` (13 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This fixes a trivial typo.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
index 377ea7acb54d..da71d8059019 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
@@ -100,7 +100,7 @@ struct ss_clock {
* @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
+ * @ss_clks: list of clock needed by this variant
*/
struct ss_variant {
char alg_cipher[SS_ID_CIPHER_MAX];
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 05/18] crypto: sun8i-ss: Add more comment on some structures
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (3 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 04/18] crypto: sun8i-ss: fix a trivial typo Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 06/18] crypto: sun8i-ss: better debug printing Corentin Labbe
` (12 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch adds some comment on structures used by sun8i-ss.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
index da71d8059019..1a66457f4a20 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h
@@ -195,6 +195,8 @@ struct sun8i_cipher_req_ctx {
* @keylen: len of the key
* @ss: pointer to the private data of driver handling this TFM
* @fallback_tfm: pointer to the fallback TFM
+ *
+ * enginectx must be the first element
*/
struct sun8i_cipher_tfm_ctx {
struct crypto_engine_ctx enginectx;
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 06/18] crypto: sun8i-ss: better debug printing
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (4 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 05/18] crypto: sun8i-ss: Add more comment on some structures Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 07/18] crypto: sun8i-ce: handle endianness of t_common_ctl Corentin Labbe
` (11 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch reworks the way debug info are printed.
Instead of printing raw numbers, let's add a bit of context.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index 5cf00d03be1f..739874596c72 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -424,19 +424,19 @@ static int sun8i_ss_dbgfs_read(struct seq_file *seq, void *v)
continue;
switch (ss_algs[i].type) {
case CRYPTO_ALG_TYPE_SKCIPHER:
- seq_printf(seq, "%s %s %lu %lu\n",
+ seq_printf(seq, "%s %s reqs=%lu fallback=%lu\n",
ss_algs[i].alg.skcipher.base.cra_driver_name,
ss_algs[i].alg.skcipher.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_fb);
break;
case CRYPTO_ALG_TYPE_RNG:
- seq_printf(seq, "%s %s %lu %lu\n",
+ seq_printf(seq, "%s %s reqs=%lu tsize=%lu\n",
ss_algs[i].alg.rng.base.cra_driver_name,
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",
+ seq_printf(seq, "%s %s reqs=%lu fallback=%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);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 07/18] crypto: sun8i-ce: handle endianness of t_common_ctl
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (5 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 06/18] crypto: sun8i-ss: better debug printing Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 08/18] crypto: sun8i-ce: move iv data to request context Corentin Labbe
` (10 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
t_common_ctl is LE32 so we need to convert its value before using it.
This value is only used on H6 (ignored on other SoCs) and not handling
the endianness cause failure on xRNG/hashes operations on H6 when running BE.
Fixes: 06f751b61329 ("crypto: allwinner - Add sun8i-ce Crypto Engine")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 138759dc8190..08ed1ca12baf 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -120,7 +120,10 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
/* Be sure all data is written before enabling the task */
wmb();
- v = 1 | (ce->chanlist[flow].tl->t_common_ctl & 0x7F) << 8;
+ /* Only H6 needs to write a part of t_common_ctl along with "1", but since it is ignored
+ * on older SoCs, we have no reason to complicate things.
+ */
+ v = 1 | ((le32_to_cpu(ce->chanlist[flow].tl->t_common_ctl) & 0x7F) << 8);
writel(v, ce->base + CE_TLR);
mutex_unlock(&ce->mlock);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 08/18] crypto: sun8i-ce: move iv data to request context
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (6 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 07/18] crypto: sun8i-ce: handle endianness of t_common_ctl Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 09/18] crypto: sun8i-ce: split into prepare/run/unprepare Corentin Labbe
` (9 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
Instead of storing IV data in the channel context, store them in the
request context.
Storing them in the channel structure was conceptualy wrong since they
are per request related.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
.../allwinner/sun8i-ce/sun8i-ce-cipher.c | 27 +++++++++----------
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 10 ++++---
2 files changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index b4d5fea27d20..2252604d821b 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -88,7 +88,6 @@ static int sun8i_ce_cipher(struct skcipher_request *areq)
struct scatterlist *sg;
unsigned int todo, len, offset, ivsize;
dma_addr_t addr_iv = 0, addr_key = 0;
- void *backup_iv = NULL;
u32 common, sym;
int flow, i;
int nr_sgs = 0;
@@ -151,24 +150,24 @@ static int sun8i_ce_cipher(struct skcipher_request *areq)
ivsize = crypto_skcipher_ivsize(tfm);
if (areq->iv && crypto_skcipher_ivsize(tfm) > 0) {
- chan->ivlen = ivsize;
- chan->bounce_iv = kzalloc(ivsize, GFP_KERNEL | GFP_DMA);
- if (!chan->bounce_iv) {
+ rctx->ivlen = ivsize;
+ rctx->bounce_iv = kzalloc(ivsize, GFP_KERNEL | GFP_DMA);
+ if (!rctx->bounce_iv) {
err = -ENOMEM;
goto theend_key;
}
if (rctx->op_dir & CE_DECRYPTION) {
- backup_iv = kzalloc(ivsize, GFP_KERNEL);
- if (!backup_iv) {
+ rctx->backup_iv = kzalloc(ivsize, GFP_KERNEL);
+ if (!rctx->backup_iv) {
err = -ENOMEM;
goto theend_key;
}
offset = areq->cryptlen - ivsize;
- scatterwalk_map_and_copy(backup_iv, areq->src, offset,
- ivsize, 0);
+ scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
+ offset, ivsize, 0);
}
- memcpy(chan->bounce_iv, areq->iv, ivsize);
- addr_iv = dma_map_single(ce->dev, chan->bounce_iv, chan->ivlen,
+ memcpy(rctx->bounce_iv, areq->iv, ivsize);
+ addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen,
DMA_TO_DEVICE);
cet->t_iv = cpu_to_le32(addr_iv);
if (dma_mapping_error(ce->dev, addr_iv)) {
@@ -249,17 +248,17 @@ static int sun8i_ce_cipher(struct skcipher_request *areq)
theend_iv:
if (areq->iv && ivsize > 0) {
if (addr_iv)
- dma_unmap_single(ce->dev, addr_iv, chan->ivlen,
+ dma_unmap_single(ce->dev, addr_iv, rctx->ivlen,
DMA_TO_DEVICE);
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & CE_DECRYPTION) {
- memcpy(areq->iv, backup_iv, ivsize);
- kfree_sensitive(backup_iv);
+ memcpy(areq->iv, rctx->backup_iv, ivsize);
+ kfree_sensitive(rctx->backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
ivsize, 0);
}
- kfree(chan->bounce_iv);
+ kfree(rctx->bounce_iv);
}
theend_key:
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 963645fe4adb..f5555c4800e8 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -129,8 +129,6 @@ struct ce_task {
/*
* struct sun8i_ce_flow - Information used by each flow
* @engine: ptr to the crypto_engine for this flow
- * @bounce_iv: buffer which contain the IV
- * @ivlen: size of bounce_iv
* @complete: completion for the current task on this flow
* @status: set to 1 by interrupt if task is done
* @t_phy: Physical address of task
@@ -139,8 +137,6 @@ struct ce_task {
*/
struct sun8i_ce_flow {
struct crypto_engine *engine;
- void *bounce_iv;
- unsigned int ivlen;
struct completion complete;
int status;
dma_addr_t t_phy;
@@ -183,11 +179,17 @@ struct sun8i_ce_dev {
* struct sun8i_cipher_req_ctx - context for a skcipher request
* @op_dir: direction (encrypt vs decrypt) for this request
* @flow: the flow to use for this request
+ * @backup_iv: buffer which contain the next IV to store
+ * @bounce_iv: buffer which contain the IV
+ * @ivlen: size of bounce_iv
* @fallback_req: request struct for invoking the fallback skcipher TFM
*/
struct sun8i_cipher_req_ctx {
u32 op_dir;
int flow;
+ void *backup_iv;
+ void *bounce_iv;
+ unsigned int ivlen;
struct skcipher_request fallback_req; // keep at the end
};
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 09/18] crypto: sun8i-ce: split into prepare/run/unprepare
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (7 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 08/18] crypto: sun8i-ce: move iv data to request context Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-11 6:36 ` Herbert Xu
2020-09-04 11:09 ` [PATCH v6 10/18] crypto: sun8i-ce: handle different error registers Corentin Labbe
` (8 subsequent siblings)
17 siblings, 1 reply; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch split the do_one_request into three.
Prepare will handle all DMA mapping and initialisation of the task
structure.
Unprepare will clean all DMA mapping.
And the do_one_request will be limited to just executing the task.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
.../allwinner/sun8i-ce/sun8i-ce-cipher.c | 70 ++++++++++++++++---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 4 ++
2 files changed, 66 insertions(+), 8 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index 2252604d821b..fa12c966c45f 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -75,8 +75,9 @@ static int sun8i_ce_cipher_fallback(struct skcipher_request *areq)
return err;
}
-static int sun8i_ce_cipher(struct skcipher_request *areq)
+static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req)
{
+ struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
struct sun8i_ce_dev *ce = op->ce;
@@ -234,7 +235,9 @@ static int sun8i_ce_cipher(struct skcipher_request *areq)
}
chan->timeout = areq->cryptlen;
- err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(areq->base.tfm));
+ rctx->nr_sgs = nr_sgs;
+ rctx->nr_sgd = nr_sgd;
+ return 0;
theend_sgs:
if (areq->src == areq->dst) {
@@ -268,13 +271,64 @@ static int sun8i_ce_cipher(struct skcipher_request *areq)
return err;
}
-static int sun8i_ce_handle_cipher_request(struct crypto_engine *engine, void *areq)
+static int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq)
{
- int err;
struct skcipher_request *breq = container_of(areq, struct skcipher_request, base);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(breq);
+ struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
+ struct sun8i_ce_dev *ce = op->ce;
+ struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(breq);
+ int flow, err;
- err = sun8i_ce_cipher(breq);
+ flow = rctx->flow;
+ err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(breq->base.tfm));
crypto_finalize_skcipher_request(engine, breq, err);
+ return 0;
+}
+
+static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_req)
+{
+ struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
+ struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
+ struct sun8i_ce_dev *ce = op->ce;
+ struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
+ struct sun8i_ce_flow *chan;
+ struct ce_task *cet;
+ unsigned int ivsize, offset;
+ int nr_sgs = rctx->nr_sgs;
+ int nr_sgd = rctx->nr_sgd;
+ int flow;
+
+ flow = rctx->flow;
+ chan = &ce->chanlist[flow];
+ cet = chan->tl;
+ ivsize = crypto_skcipher_ivsize(tfm);
+
+ if (areq->src == areq->dst) {
+ dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL);
+ } else {
+ if (nr_sgs > 0)
+ dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
+ dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE);
+ }
+
+ if (areq->iv && ivsize > 0) {
+ if (cet->t_iv)
+ dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen,
+ DMA_TO_DEVICE);
+ offset = areq->cryptlen - ivsize;
+ if (rctx->op_dir & CE_DECRYPTION) {
+ memcpy(areq->iv, rctx->backup_iv, ivsize);
+ kfree_sensitive(rctx->backup_iv);
+ } else {
+ scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
+ ivsize, 0);
+ }
+ kfree(rctx->bounce_iv);
+ }
+
+ dma_unmap_single(ce->dev, cet->t_key, op->keylen, DMA_TO_DEVICE);
return 0;
}
@@ -346,9 +400,9 @@ int sun8i_ce_cipher_init(struct crypto_tfm *tfm)
crypto_tfm_alg_driver_name(&sktfm->base),
crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm)));
- op->enginectx.op.do_one_request = sun8i_ce_handle_cipher_request;
- op->enginectx.op.prepare_request = NULL;
- op->enginectx.op.unprepare_request = NULL;
+ op->enginectx.op.do_one_request = sun8i_ce_cipher_run;
+ op->enginectx.op.prepare_request = sun8i_ce_cipher_prepare;
+ op->enginectx.op.unprepare_request = sun8i_ce_cipher_unprepare;
err = pm_runtime_get_sync(op->ce->dev);
if (err < 0)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index f5555c4800e8..084a962b8d4f 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -182,6 +182,8 @@ struct sun8i_ce_dev {
* @backup_iv: buffer which contain the next IV to store
* @bounce_iv: buffer which contain the IV
* @ivlen: size of bounce_iv
+ * @nr_sgs: The number of source SG (as given by dma_map_sg())
+ * @nr_sgd: The number of destination SG (as given by dma_map_sg())
* @fallback_req: request struct for invoking the fallback skcipher TFM
*/
struct sun8i_cipher_req_ctx {
@@ -190,6 +192,8 @@ struct sun8i_cipher_req_ctx {
void *backup_iv;
void *bounce_iv;
unsigned int ivlen;
+ int nr_sgs;
+ int nr_sgd;
struct skcipher_request fallback_req; // keep at the end
};
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH v6 09/18] crypto: sun8i-ce: split into prepare/run/unprepare
2020-09-04 11:09 ` [PATCH v6 09/18] crypto: sun8i-ce: split into prepare/run/unprepare Corentin Labbe
@ 2020-09-11 6:36 ` Herbert Xu
0 siblings, 0 replies; 23+ messages in thread
From: Herbert Xu @ 2020-09-11 6:36 UTC (permalink / raw)
To: Corentin Labbe
Cc: davem, mripard, wens, linux-arm-kernel, linux-crypto,
linux-kernel, linux-sunxi
On Fri, Sep 04, 2020 at 11:09:54AM +0000, Corentin Labbe wrote:
>
> +static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_req)
> +{
> + struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
> + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
> + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
> + struct sun8i_ce_dev *ce = op->ce;
> + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
> + struct sun8i_ce_flow *chan;
> + struct ce_task *cet;
> + unsigned int ivsize, offset;
> + int nr_sgs = rctx->nr_sgs;
> + int nr_sgd = rctx->nr_sgd;
> + int flow;
> +
> + flow = rctx->flow;
> + chan = &ce->chanlist[flow];
> + cet = chan->tl;
> + ivsize = crypto_skcipher_ivsize(tfm);
> +
> + if (areq->src == areq->dst) {
> + dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL);
> + } else {
> + if (nr_sgs > 0)
> + dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
> + dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE);
> + }
> +
> + if (areq->iv && ivsize > 0) {
> + if (cet->t_iv)
> + dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen,
> + DMA_TO_DEVICE);
This creates a sparse warning:
CHECK ../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25: warning: incorrect type in argument 2 (different base types)
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25: expected unsigned long long [usertype] addr
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25: got restricted __le32 [usertype] t_iv
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9: warning: incorrect type in argument 2 (different base types)
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9: expected unsigned long long [usertype] addr
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9: got restricted __le32 [usertype] t_key
Please fix. Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH v6 10/18] crypto: sun8i-ce: handle different error registers
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (8 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 09/18] crypto: sun8i-ce: split into prepare/run/unprepare Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 11/18] crypto: sun8i-ce: rename has_t_dlen_in_bytes to cipher_t_dlen_in_bytes Corentin Labbe
` (7 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
Error registers are different across SoCs.
This patch handle those difference.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 62 ++++++++++++++++---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 8 +++
2 files changed, 62 insertions(+), 8 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 08ed1ca12baf..65748dfa7a48 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -40,7 +40,8 @@ static const struct ce_variant ce_h3_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 50000000, 0 },
- }
+ },
+ .esr = ESR_H3,
};
static const struct ce_variant ce_h5_variant = {
@@ -51,7 +52,8 @@ static const struct ce_variant ce_h5_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_H5,
};
static const struct ce_variant ce_h6_variant = {
@@ -64,7 +66,8 @@ static const struct ce_variant ce_h6_variant = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
{ "ram", 0, 400000000 },
- }
+ },
+ .esr = ESR_H6,
};
static const struct ce_variant ce_a64_variant = {
@@ -75,7 +78,8 @@ static const struct ce_variant ce_a64_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_A64,
};
static const struct ce_variant ce_r40_variant = {
@@ -86,7 +90,8 @@ static const struct ce_variant ce_r40_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_R40,
};
/*
@@ -102,6 +107,7 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
{
u32 v;
int err = 0;
+ struct ce_task *cet = ce->chanlist[flow].tl;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
ce->chanlist[flow].stat_req++;
@@ -131,19 +137,56 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
msecs_to_jiffies(ce->chanlist[flow].timeout));
if (ce->chanlist[flow].status == 0) {
- dev_err(ce->dev, "DMA timeout for %s\n", name);
+ dev_err(ce->dev, "DMA timeout for %s (tm=%d) on flow %d\n", name,
+ ce->chanlist[flow].timeout, flow);
err = -EFAULT;
}
/* No need to lock for this read, the channel is locked so
* nothing could modify the error value for this channel
*/
v = readl(ce->base + CE_ESR);
- if (v) {
+ switch (ce->variant->esr) {
+ case ESR_H3:
+ /* Sadly, the error bit is not per flow */
+ if (v) {
+ dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
+ err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4,
+ cet, sizeof(struct ce_task), false);
+ }
+ if (v & CE_ERR_ALGO_NOTSUP)
+ dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
+ if (v & CE_ERR_DATALEN)
+ dev_err(ce->dev, "CE ERROR: data length error\n");
+ if (v & CE_ERR_KEYSRAM)
+ dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
+ break;
+ case ESR_A64:
+ case ESR_H5:
+ case ESR_R40:
v >>= (flow * 4);
+ v &= 0xF;
+ if (v) {
+ dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
+ err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4,
+ cet, sizeof(struct ce_task), false);
+ }
+ if (v & CE_ERR_ALGO_NOTSUP)
+ dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
+ if (v & CE_ERR_DATALEN)
+ dev_err(ce->dev, "CE ERROR: data length error\n");
+ if (v & CE_ERR_KEYSRAM)
+ dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
+ break;
+ case ESR_H6:
+ v >>= (flow * 8);
v &= 0xFF;
if (v) {
dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4,
+ cet, sizeof(struct ce_task), false);
}
if (v & CE_ERR_ALGO_NOTSUP)
dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
@@ -153,7 +196,10 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
if (v & CE_ERR_ADDR_INVALID)
dev_err(ce->dev, "CE ERROR: address invalid\n");
- }
+ if (v & CE_ERR_KEYLADDER)
+ dev_err(ce->dev, "CE ERROR: key ladder configuration error\n");
+ break;
+ }
return err;
}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 084a962b8d4f..eea0847dc1e8 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -65,6 +65,12 @@
#define CE_ERR_ADDR_INVALID BIT(5)
#define CE_ERR_KEYLADDER BIT(6)
+#define ESR_H3 0
+#define ESR_A64 1
+#define ESR_R40 2
+#define ESR_H5 3
+#define ESR_H6 4
+
#define CE_DIE_ID_SHIFT 16
#define CE_DIE_ID_MASK 0x07
@@ -94,12 +100,14 @@ struct ce_clock {
* @has_t_dlen_in_bytes: Does the request size for cipher is in
* bytes or words
* @ce_clks: list of clocks needed by this variant
+ * @esr: The type of error register
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
u32 op_mode[CE_ID_OP_MAX];
bool has_t_dlen_in_bytes;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
+ int esr;
};
struct sginfo {
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 11/18] crypto: sun8i-ce: rename has_t_dlen_in_bytes to cipher_t_dlen_in_bytes
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (9 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 10/18] crypto: sun8i-ce: handle different error registers Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 12/18] crypto: sun8i-ce: support hash algorithms Corentin Labbe
` (6 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
Hash algorithms will need also a spetial t_dlen handling, but since the
meaning will be different, rename the current flag to specify it apply
only on ciphers algorithms.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c | 2 +-
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 2 +-
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index fa12c966c45f..2dcf508b0f18 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -119,7 +119,7 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
common |= rctx->op_dir | CE_COMM_INT;
cet->t_common_ctl = cpu_to_le32(common);
/* CTS and recent CE (H6) need length in bytes, in word otherwise */
- if (ce->variant->has_t_dlen_in_bytes)
+ if (ce->variant->cipher_t_dlen_in_bytes)
cet->t_dlen = cpu_to_le32(areq->cryptlen);
else
cet->t_dlen = cpu_to_le32(areq->cryptlen / 4);
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 65748dfa7a48..688976011f07 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -61,7 +61,7 @@ static const struct ce_variant ce_h6_variant = {
},
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
- .has_t_dlen_in_bytes = true,
+ .cipher_t_dlen_in_bytes = true,
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index eea0847dc1e8..3dbf8ca47b7c 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -97,7 +97,7 @@ struct ce_clock {
* @alg_cipher: list of supported ciphers. for each CE_ID_ this will give the
* coresponding CE_ALG_XXX value
* @op_mode: list of supported block modes
- * @has_t_dlen_in_bytes: Does the request size for cipher is in
+ * @cipher_t_dlen_in_bytes: Does the request size for cipher is in
* bytes or words
* @ce_clks: list of clocks needed by this variant
* @esr: The type of error register
@@ -105,7 +105,7 @@ struct ce_clock {
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
u32 op_mode[CE_ID_OP_MAX];
- bool has_t_dlen_in_bytes;
+ bool cipher_t_dlen_in_bytes;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
int esr;
};
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 12/18] crypto: sun8i-ce: support hash algorithms
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (10 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 11/18] crypto: sun8i-ce: rename has_t_dlen_in_bytes to cipher_t_dlen_in_bytes Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 13/18] crypto: sun8i-ce: Add stat_bytes debugfs Corentin Labbe
` (5 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
The CE support multiples hash algorithms, this patch adds support for
MD5, SHA1, SHA224, SHA256, SHA384 and SHA512.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 10 +
drivers/crypto/allwinner/sun8i-ce/Makefile | 1 +
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 229 ++++++++++
.../crypto/allwinner/sun8i-ce/sun8i-ce-hash.c | 413 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 58 +++
5 files changed, 711 insertions(+)
create mode 100644 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index b346850a91b9..fa34df7fbf78 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -78,6 +78,16 @@ config CRYPTO_DEV_SUN8I_CE_DEBUG
This will create /sys/kernel/debug/sun8i-ce/stats for displaying
the number of requests per flow and per algorithm.
+config CRYPTO_DEV_SUN8I_CE_HASH
+ bool "Enable support for hash on sun8i-ce"
+ depends on CRYPTO_DEV_SUN8I_CE
+ select MD5
+ select SHA1
+ select SHA256
+ select SHA512
+ help
+ Say y to enable support for hash algorithms.
+
config CRYPTO_DEV_SUN8I_SS
tristate "Support for Allwinner Security System cryptographic offloader"
select CRYPTO_SKCIPHER
diff --git a/drivers/crypto/allwinner/sun8i-ce/Makefile b/drivers/crypto/allwinner/sun8i-ce/Makefile
index 08b68c3c1ca9..d1b1f0e86c79 100644
--- a/drivers/crypto/allwinner/sun8i-ce/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ce/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_CRYPTO_DEV_SUN8I_CE) += sun8i-ce.o
sun8i-ce-y += sun8i-ce-core.o sun8i-ce-cipher.o
+sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_HASH) += sun8i-ce-hash.o
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 688976011f07..3ef5b1079be3 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -35,6 +35,9 @@
static const struct ce_variant ce_h3_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ALG_SHA384, CE_ALG_SHA512
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -47,6 +50,9 @@ static const struct ce_variant ce_h3_variant = {
static const struct ce_variant ce_h5_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -59,9 +65,13 @@ static const struct ce_variant ce_h5_variant = {
static const struct ce_variant ce_h6_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ALG_SHA384, CE_ALG_SHA512
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.cipher_t_dlen_in_bytes = true,
+ .hash_t_dlen_in_bits = true,
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
@@ -73,6 +83,9 @@ static const struct ce_variant ce_h6_variant = {
static const struct ce_variant ce_a64_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -85,6 +98,9 @@ static const struct ce_variant ce_a64_variant = {
static const struct ce_variant ce_r40_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -329,6 +345,188 @@ static struct sun8i_ce_alg_template ce_algs[] = {
.decrypt = sun8i_ce_skdecrypt,
}
},
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_HASH
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_MD5,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct md5_state),
+ .base = {
+ .cra_name = "md5",
+ .cra_driver_name = "md5-sun8i-ce",
+ .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_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA1,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .statesize = sizeof(struct sha1_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name = "sha1-sun8i-ce",
+ .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_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA224,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .statesize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name = "sha224-sun8i-ce",
+ .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_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA256,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .statesize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha256",
+ .cra_driver_name = "sha256-sun8i-ce",
+ .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_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA384,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha384",
+ .cra_driver_name = "sha384-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA512,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha512",
+ .cra_driver_name = "sha512-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+#endif
};
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
@@ -350,6 +548,12 @@ static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
ce_algs[i].alg.skcipher.base.cra_name,
ce_algs[i].stat_req, ce_algs[i].stat_fb);
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ seq_printf(seq, "%s %s %lu %lu\n",
+ ce_algs[i].alg.hash.halg.base.cra_driver_name,
+ ce_algs[i].alg.hash.halg.base.cra_name,
+ ce_algs[i].stat_req, ce_algs[i].stat_fb);
+ break;
}
}
return 0;
@@ -564,6 +768,26 @@ static int sun8i_ce_register_algs(struct sun8i_ce_dev *ce)
return err;
}
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ id = ce_algs[i].ce_algo_id;
+ ce_method = ce->variant->alg_hash[id];
+ if (ce_method == CE_ID_NOTSUPP) {
+ dev_info(ce->dev,
+ "DEBUG: Algo of %s not supported\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ ce_algs[i].ce = NULL;
+ break;
+ }
+ dev_info(ce->dev, "Register %s\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ err = crypto_register_ahash(&ce_algs[i].alg.hash);
+ if (err) {
+ dev_err(ce->dev, "ERROR: Fail to register %s\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ ce_algs[i].ce = NULL;
+ return err;
+ }
+ break;
default:
ce_algs[i].ce = NULL;
dev_err(ce->dev, "ERROR: tried to register an unknown algo\n");
@@ -585,6 +809,11 @@ static void sun8i_ce_unregister_algs(struct sun8i_ce_dev *ce)
ce_algs[i].alg.skcipher.base.cra_name);
crypto_unregister_skcipher(&ce_algs[i].alg.skcipher);
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ dev_info(ce->dev, "Unregister %d %s\n", i,
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ crypto_unregister_ahash(&ce_algs[i].alg.hash);
+ break;
}
}
}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
new file mode 100644
index 000000000000..54ae98a0ed13
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
@@ -0,0 +1,413 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sun8i-ce-hash.c - hardware cryptographic offloader for
+ * Allwinner H3/A64/H5/H2+/H6/R40 SoC
+ *
+ * Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
+ *
+ * This file add support for MD5 and SHA1/SHA224/SHA256/SHA384/SHA512.
+ *
+ * You could find the datasheet in Documentation/arm/sunxi/README
+ */
+#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-ce.h"
+
+int sun8i_ce_hash_crainit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_hash_tfm_ctx *op = crypto_tfm_ctx(tfm);
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
+ struct sun8i_ce_alg_template *algt;
+ int err;
+
+ memset(op, 0, sizeof(struct sun8i_ce_hash_tfm_ctx));
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ op->ce = algt->ce;
+
+ op->enginectx.op.do_one_request = sun8i_ce_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->ce->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_ce_hash_reqctx) +
+ crypto_ahash_reqsize(op->fallback_tfm));
+
+ dev_info(op->ce->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->ce->dev);
+ if (err < 0)
+ goto error_pm;
+ return 0;
+error_pm:
+ pm_runtime_put_noidle(op->ce->dev);
+ crypto_free_ahash(op->fallback_tfm);
+ return err;
+}
+
+void sun8i_ce_hash_craexit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_tfm_ctx(tfm);
+
+ crypto_free_ahash(tfmctx->fallback_tfm);
+ pm_runtime_put_sync_suspend(tfmctx->ce->dev);
+}
+
+int sun8i_ce_hash_init(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+
+ memset(rctx, 0, sizeof(struct sun8i_ce_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_ce_hash_export(struct ahash_request *areq, void *out)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_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_ce_hash_import(struct ahash_request *areq, const void *in)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_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_ce_hash_final(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_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_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_final(&rctx->fallback_req);
+}
+
+int sun8i_ce_hash_update(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_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_ce_hash_finup(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_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_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_finup(&rctx->fallback_req);
+}
+
+static int sun8i_ce_hash_digest_fb(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_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_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_digest(&rctx->fallback_req);
+}
+
+static bool sun8i_ce_hash_need_fallback(struct ahash_request *areq)
+{
+ struct scatterlist *sg;
+
+ if (areq->nbytes == 0)
+ return true;
+ /* we need to reserve one SG for padding one */
+ if (sg_nents(areq->src) > MAX_SG - 1)
+ return true;
+ sg = areq->src;
+ while (sg) {
+ if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
+ return true;
+ sg = sg_next(sg);
+ }
+ return false;
+}
+
+int sun8i_ce_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_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct sun8i_ce_alg_template *algt;
+ struct sun8i_ce_dev *ce;
+ struct crypto_engine *engine;
+ struct scatterlist *sg;
+ int nr_sgs, e, i;
+
+ if (sun8i_ce_hash_need_fallback(areq))
+ return sun8i_ce_hash_digest_fb(areq);
+
+ nr_sgs = sg_nents(areq->src);
+ if (nr_sgs > MAX_SG - 1)
+ return sun8i_ce_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_ce_hash_digest_fb(areq);
+ }
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ ce = algt->ce;
+
+ e = sun8i_ce_get_engine_number(ce);
+ rctx->flow = e;
+ engine = ce->chanlist[e].engine;
+
+ return crypto_transfer_hash_request_to_engine(engine, areq);
+}
+
+int sun8i_ce_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_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct sun8i_ce_alg_template *algt;
+ struct sun8i_ce_dev *ce;
+ struct sun8i_ce_flow *chan;
+ struct ce_task *cet;
+ struct scatterlist *sg;
+ int nr_sgs, flow, err;
+ unsigned int len;
+ u32 common;
+ u64 byte_count;
+ __le32 *bf;
+ void *buf;
+ int j, i, todo;
+ int nbw = 0;
+ u64 fill, min_fill;
+ __be64 *bebits;
+ __le64 *lebits;
+ void *result;
+ u64 bs;
+ int digestsize;
+ dma_addr_t addr_res, addr_pad;
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ ce = algt->ce;
+
+ bs = algt->alg.hash.halg.base.cra_blocksize;
+ digestsize = algt->alg.hash.halg.digestsize;
+ if (digestsize == SHA224_DIGEST_SIZE)
+ digestsize = SHA256_DIGEST_SIZE;
+ if (digestsize == SHA384_DIGEST_SIZE)
+ digestsize = SHA512_DIGEST_SIZE;
+
+ /* the padding could be up to two block. */
+ buf = kzalloc(bs * 2, GFP_KERNEL | GFP_DMA);
+ if (!buf)
+ return -ENOMEM;
+ bf = (__le32 *)buf;
+
+ result = kzalloc(digestsize, GFP_KERNEL | GFP_DMA);
+ if (!result)
+ return -ENOMEM;
+
+ flow = rctx->flow;
+ chan = &ce->chanlist[flow];
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt->stat_req++;
+#endif
+ dev_dbg(ce->dev, "%s %s len=%d\n", __func__, crypto_tfm_alg_name(areq->base.tfm), areq->nbytes);
+
+ cet = chan->tl;
+ memset(cet, 0, sizeof(struct ce_task));
+
+ cet->t_id = cpu_to_le32(flow);
+ common = ce->variant->alg_hash[algt->ce_algo_id];
+ common |= CE_COMM_INT;
+ cet->t_common_ctl = cpu_to_le32(common);
+
+ cet->t_sym_ctl = 0;
+ cet->t_asym_ctl = 0;
+
+ nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
+ if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
+ dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
+ err = -EINVAL;
+ goto theend;
+ }
+
+ len = areq->nbytes;
+ for_each_sg(areq->src, sg, nr_sgs, i) {
+ cet->t_src[i].addr = cpu_to_le32(sg_dma_address(sg));
+ todo = min(len, sg_dma_len(sg));
+ cet->t_src[i].len = cpu_to_le32(todo / 4);
+ len -= todo;
+ }
+ if (len > 0) {
+ dev_err(ce->dev, "remaining len %d\n", len);
+ err = -EINVAL;
+ goto theend;
+ }
+ addr_res = dma_map_single(ce->dev, result, digestsize, DMA_FROM_DEVICE);
+ cet->t_dst[0].addr = cpu_to_le32(addr_res);
+ cet->t_dst[0].len = cpu_to_le32(digestsize / 4);
+ if (dma_mapping_error(ce->dev, addr_res)) {
+ dev_err(ce->dev, "DMA map dest\n");
+ err = -EINVAL;
+ goto theend;
+ }
+
+ byte_count = areq->nbytes;
+ j = 0;
+ bf[j++] = cpu_to_le32(0x80);
+
+ if (bs == 64) {
+ fill = 64 - (byte_count % 64);
+ min_fill = 2 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
+ } else {
+ fill = 128 - (byte_count % 128);
+ min_fill = 4 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
+ }
+
+ if (fill < min_fill)
+ fill += bs;
+
+ j += (fill - min_fill) / sizeof(u32);
+
+ switch (algt->ce_algo_id) {
+ case CE_ID_HASH_MD5:
+ lebits = (__le64 *)&bf[j];
+ *lebits = cpu_to_le64(byte_count << 3);
+ j += 2;
+ break;
+ case CE_ID_HASH_SHA1:
+ case CE_ID_HASH_SHA224:
+ case CE_ID_HASH_SHA256:
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count << 3);
+ j += 2;
+ break;
+ case CE_ID_HASH_SHA384:
+ case CE_ID_HASH_SHA512:
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count >> 61);
+ j += 2;
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count << 3);
+ j += 2;
+ break;
+ }
+
+ addr_pad = dma_map_single(ce->dev, buf, j * 4, DMA_TO_DEVICE);
+ cet->t_src[i].addr = cpu_to_le32(addr_pad);
+ cet->t_src[i].len = cpu_to_le32(j);
+ if (dma_mapping_error(ce->dev, addr_pad)) {
+ dev_err(ce->dev, "DMA error on padding SG\n");
+ err = -EINVAL;
+ goto theend;
+ }
+
+ if (ce->variant->hash_t_dlen_in_bits)
+ cet->t_dlen = cpu_to_le32((areq->nbytes + j * 4) * 8);
+ else
+ cet->t_dlen = cpu_to_le32(areq->nbytes / 4 + j);
+
+ chan->timeout = areq->nbytes;
+
+ err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(areq->base.tfm));
+
+ dma_unmap_single(ce->dev, addr_pad, j * 4, DMA_TO_DEVICE);
+ dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
+ dma_unmap_single(ce->dev, addr_res, digestsize, DMA_FROM_DEVICE);
+
+ kfree(buf);
+
+ memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
+ kfree(result);
+theend:
+ crypto_finalize_hash_request(engine, breq, err);
+ return 0;
+}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 3dbf8ca47b7c..6bbafdf9d40c 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -12,6 +12,9 @@
#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>
/* CE Registers */
#define CE_TDQ 0x00
@@ -45,6 +48,12 @@
#define CE_ALG_AES 0
#define CE_ALG_DES 1
#define CE_ALG_3DES 2
+#define CE_ALG_MD5 16
+#define CE_ALG_SHA1 17
+#define CE_ALG_SHA224 18
+#define CE_ALG_SHA256 19
+#define CE_ALG_SHA384 20
+#define CE_ALG_SHA512 21
/* Used in ce_variant */
#define CE_ID_NOTSUPP 0xFF
@@ -54,6 +63,14 @@
#define CE_ID_CIPHER_DES3 2
#define CE_ID_CIPHER_MAX 3
+#define CE_ID_HASH_MD5 0
+#define CE_ID_HASH_SHA1 1
+#define CE_ID_HASH_SHA224 2
+#define CE_ID_HASH_SHA256 3
+#define CE_ID_HASH_SHA384 4
+#define CE_ID_HASH_SHA512 5
+#define CE_ID_HASH_MAX 6
+
#define CE_ID_OP_ECB 0
#define CE_ID_OP_CBC 1
#define CE_ID_OP_MAX 2
@@ -96,16 +113,22 @@ struct ce_clock {
* struct ce_variant - Describe CE capability for each variant hardware
* @alg_cipher: list of supported ciphers. for each CE_ID_ this will give the
* coresponding CE_ALG_XXX value
+ * @alg_hash: list of supported hashes. for each CE_ID_ this will give the
+ * corresponding CE_ALG_XXX value
* @op_mode: list of supported block modes
* @cipher_t_dlen_in_bytes: Does the request size for cipher is in
* bytes or words
+ * @hash_t_dlen_in_bytes: Does the request size for hash is in
+ * bits or words
* @ce_clks: list of clocks needed by this variant
* @esr: The type of error register
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
+ char alg_hash[CE_ID_HASH_MAX];
u32 op_mode[CE_ID_OP_MAX];
bool cipher_t_dlen_in_bytes;
+ bool hash_t_dlen_in_bits;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
int esr;
};
@@ -221,6 +244,28 @@ struct sun8i_cipher_tfm_ctx {
struct crypto_skcipher *fallback_tfm;
};
+/*
+ * struct sun8i_ce_hash_tfm_ctx - context for an ahash TFM
+ * @enginectx: crypto_engine used by this TFM
+ * @ce: pointer to the private data of driver handling this TFM
+ * @fallback_tfm: pointer to the fallback TFM
+ */
+struct sun8i_ce_hash_tfm_ctx {
+ struct crypto_engine_ctx enginectx;
+ struct sun8i_ce_dev *ce;
+ struct crypto_ahash *fallback_tfm;
+};
+
+/*
+ * struct sun8i_ce_hash_reqctx - context for an ahash request
+ * @fallback_req: pre-allocated fallback request
+ * @flow: the flow to use for this request
+ */
+struct sun8i_ce_hash_reqctx {
+ struct ahash_request fallback_req;
+ int flow;
+};
+
/*
* struct sun8i_ce_alg_template - crypto_alg template
* @type: the CRYPTO_ALG_TYPE for this template
@@ -239,6 +284,7 @@ struct sun8i_ce_alg_template {
struct sun8i_ce_dev *ce;
union {
struct skcipher_alg skcipher;
+ struct ahash_alg hash;
} alg;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
unsigned long stat_req;
@@ -260,3 +306,15 @@ int sun8i_ce_skencrypt(struct skcipher_request *areq);
int sun8i_ce_get_engine_number(struct sun8i_ce_dev *ce);
int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name);
+
+int sun8i_ce_hash_crainit(struct crypto_tfm *tfm);
+void sun8i_ce_hash_craexit(struct crypto_tfm *tfm);
+int sun8i_ce_hash_init(struct ahash_request *areq);
+int sun8i_ce_hash_export(struct ahash_request *areq, void *out);
+int sun8i_ce_hash_import(struct ahash_request *areq, const void *in);
+int sun8i_ce_hash(struct ahash_request *areq);
+int sun8i_ce_hash_final(struct ahash_request *areq);
+int sun8i_ce_hash_update(struct ahash_request *areq);
+int sun8i_ce_hash_finup(struct ahash_request *areq);
+int sun8i_ce_hash_digest(struct ahash_request *areq);
+int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 13/18] crypto: sun8i-ce: Add stat_bytes debugfs
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (11 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 12/18] crypto: sun8i-ce: support hash algorithms Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:09 ` [PATCH v6 14/18] crypto: sun8i-ce: Add support for the PRNG Corentin Labbe
` (4 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch adds a new stat_bytes counter in the sun8i-ce debugfs.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 6bbafdf9d40c..910b510d7bb2 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -276,6 +276,7 @@ struct sun8i_ce_hash_reqctx {
* @alg: one of sub struct must be used
* @stat_req: number of request done on this template
* @stat_fb: number of request which has fallbacked
+ * @stat_bytes: total data size done by this template
*/
struct sun8i_ce_alg_template {
u32 type;
@@ -289,6 +290,7 @@ struct sun8i_ce_alg_template {
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
unsigned long stat_req;
unsigned long stat_fb;
+ unsigned long stat_bytes;
#endif
};
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 14/18] crypto: sun8i-ce: Add support for the PRNG
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (12 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 13/18] crypto: sun8i-ce: Add stat_bytes debugfs Corentin Labbe
@ 2020-09-04 11:09 ` Corentin Labbe
2020-09-04 11:10 ` [PATCH v6 15/18] crypto: sun8i-ce: Add support for the TRNG Corentin Labbe
` (3 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:09 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch had support for the PRNG present in the CE.
The output was tested with rngtest without any failure.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 8 +
drivers/crypto/allwinner/sun8i-ce/Makefile | 1 +
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 58 ++++++-
.../crypto/allwinner/sun8i-ce/sun8i-ce-prng.c | 164 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 31 ++++
5 files changed, 261 insertions(+), 1 deletion(-)
create mode 100644 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index fa34df7fbf78..bf4d2a6328dc 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -88,6 +88,14 @@ config CRYPTO_DEV_SUN8I_CE_HASH
help
Say y to enable support for hash algorithms.
+config CRYPTO_DEV_SUN8I_CE_PRNG
+ bool "Support for Allwinner Crypto Engine PRNG"
+ depends on CRYPTO_DEV_SUN8I_CE
+ select CRYPTO_RNG
+ help
+ Select this option if you want to provide kernel-side support for
+ the Pseudo-Random Number Generator found in the Crypto Engine.
+
config CRYPTO_DEV_SUN8I_SS
tristate "Support for Allwinner Security System cryptographic offloader"
select CRYPTO_SKCIPHER
diff --git a/drivers/crypto/allwinner/sun8i-ce/Makefile b/drivers/crypto/allwinner/sun8i-ce/Makefile
index d1b1f0e86c79..c0ea81da2c7d 100644
--- a/drivers/crypto/allwinner/sun8i-ce/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ce/Makefile
@@ -1,3 +1,4 @@
obj-$(CONFIG_CRYPTO_DEV_SUN8I_CE) += sun8i-ce.o
sun8i-ce-y += sun8i-ce-core.o sun8i-ce-cipher.o
sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_HASH) += sun8i-ce-hash.o
+sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_PRNG) += sun8i-ce-prng.o
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 3ef5b1079be3..9b7f8fdc4992 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
+#include <crypto/internal/rng.h>
#include <crypto/internal/skcipher.h>
#include "sun8i-ce.h"
@@ -45,6 +46,7 @@ static const struct ce_variant ce_h3_variant = {
{ "mod", 50000000, 0 },
},
.esr = ESR_H3,
+ .prng = CE_ALG_PRNG,
};
static const struct ce_variant ce_h5_variant = {
@@ -60,6 +62,7 @@ static const struct ce_variant ce_h5_variant = {
{ "mod", 300000000, 0 },
},
.esr = ESR_H5,
+ .prng = CE_ALG_PRNG,
};
static const struct ce_variant ce_h6_variant = {
@@ -72,12 +75,14 @@ static const struct ce_variant ce_h6_variant = {
},
.cipher_t_dlen_in_bytes = true,
.hash_t_dlen_in_bits = true,
+ .prng_t_dlen_in_bytes = true,
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
{ "ram", 0, 400000000 },
},
.esr = ESR_H6,
+ .prng = CE_ALG_PRNG_V2,
};
static const struct ce_variant ce_a64_variant = {
@@ -93,6 +98,7 @@ static const struct ce_variant ce_a64_variant = {
{ "mod", 300000000, 0 },
},
.esr = ESR_A64,
+ .prng = CE_ALG_PRNG,
};
static const struct ce_variant ce_r40_variant = {
@@ -108,15 +114,17 @@ static const struct ce_variant ce_r40_variant = {
{ "mod", 300000000, 0 },
},
.esr = ESR_R40,
+ .prng = CE_ALG_PRNG,
};
/*
* sun8i_ce_get_engine_number() get the next channel slot
* This is a simple round-robin way of getting the next channel
+ * The flow 3 is reserve for xRNG operations
*/
int sun8i_ce_get_engine_number(struct sun8i_ce_dev *ce)
{
- return atomic_inc_return(&ce->flow) % MAXFLOW;
+ return atomic_inc_return(&ce->flow) % (MAXFLOW - 1);
}
int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
@@ -527,6 +535,25 @@ static struct sun8i_ce_alg_template ce_algs[] = {
}
},
#endif
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_PRNG
+{
+ .type = CRYPTO_ALG_TYPE_RNG,
+ .alg.rng = {
+ .base = {
+ .cra_name = "stdrng",
+ .cra_driver_name = "sun8i-ce-prng",
+ .cra_priority = 300,
+ .cra_ctxsize = sizeof(struct sun8i_ce_rng_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_prng_init,
+ .cra_exit = sun8i_ce_prng_exit,
+ },
+ .generate = sun8i_ce_prng_generate,
+ .seed = sun8i_ce_prng_seed,
+ .seedsize = PRNG_SEED_SIZE,
+ }
+},
+#endif
};
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
@@ -554,6 +581,12 @@ static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
ce_algs[i].alg.hash.halg.base.cra_name,
ce_algs[i].stat_req, ce_algs[i].stat_fb);
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ seq_printf(seq, "%s %s %lu %lu\n",
+ ce_algs[i].alg.rng.base.cra_driver_name,
+ ce_algs[i].alg.rng.base.cra_name,
+ ce_algs[i].stat_req, ce_algs[i].stat_bytes);
+ break;
}
}
return 0;
@@ -788,6 +821,23 @@ static int sun8i_ce_register_algs(struct sun8i_ce_dev *ce)
return err;
}
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ if (ce->variant->prng == CE_ID_NOTSUPP) {
+ dev_info(ce->dev,
+ "DEBUG: Algo of %s not supported\n",
+ ce_algs[i].alg.rng.base.cra_name);
+ ce_algs[i].ce = NULL;
+ break;
+ }
+ dev_info(ce->dev, "Register %s\n",
+ ce_algs[i].alg.rng.base.cra_name);
+ err = crypto_register_rng(&ce_algs[i].alg.rng);
+ if (err) {
+ dev_err(ce->dev, "Fail to register %s\n",
+ ce_algs[i].alg.rng.base.cra_name);
+ ce_algs[i].ce = NULL;
+ }
+ break;
default:
ce_algs[i].ce = NULL;
dev_err(ce->dev, "ERROR: tried to register an unknown algo\n");
@@ -814,6 +864,11 @@ static void sun8i_ce_unregister_algs(struct sun8i_ce_dev *ce)
ce_algs[i].alg.hash.halg.base.cra_name);
crypto_unregister_ahash(&ce_algs[i].alg.hash);
break;
+ case CRYPTO_ALG_TYPE_RNG:
+ dev_info(ce->dev, "Unregister %d %s\n", i,
+ ce_algs[i].alg.rng.base.cra_name);
+ crypto_unregister_rng(&ce_algs[i].alg.rng);
+ break;
}
}
}
@@ -859,6 +914,7 @@ static int sun8i_ce_probe(struct platform_device *pdev)
}
mutex_init(&ce->mlock);
+ mutex_init(&ce->rnglock);
err = sun8i_ce_allocate_chanlist(ce);
if (err)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
new file mode 100644
index 000000000000..1b0b86a943de
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sun8i-ce-prng.c - hardware cryptographic offloader for
+ * Allwinner H3/A64/H5/H2+/H6/R40 SoC
+ *
+ * Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
+ *
+ * This file handle the PRNG
+ *
+ * You could find a link for the datasheet in Documentation/arm/sunxi/README
+ */
+#include "sun8i-ce.h"
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <crypto/internal/rng.h>
+
+int sun8i_ce_prng_init(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_rng_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ memset(ctx, 0, sizeof(struct sun8i_ce_rng_tfm_ctx));
+ return 0;
+}
+
+void sun8i_ce_prng_exit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_rng_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ memzero_explicit(ctx->seed, ctx->slen);
+ kfree(ctx->seed);
+ ctx->seed = NULL;
+ ctx->slen = 0;
+}
+
+int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed,
+ unsigned int slen)
+{
+ struct sun8i_ce_rng_tfm_ctx *ctx = crypto_rng_ctx(tfm);
+
+ if (ctx->seed && ctx->slen != slen) {
+ memzero_explicit(ctx->seed, ctx->slen);
+ kfree(ctx->seed);
+ ctx->slen = 0;
+ ctx->seed = NULL;
+ }
+ if (!ctx->seed)
+ ctx->seed = kmalloc(slen, GFP_KERNEL | GFP_DMA);
+ if (!ctx->seed)
+ return -ENOMEM;
+
+ memcpy(ctx->seed, seed, slen);
+ ctx->slen = slen;
+
+ return 0;
+}
+
+int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int dlen)
+{
+ struct sun8i_ce_rng_tfm_ctx *ctx = crypto_rng_ctx(tfm);
+ struct rng_alg *alg = crypto_rng_alg(tfm);
+ struct sun8i_ce_alg_template *algt;
+ struct sun8i_ce_dev *ce;
+ dma_addr_t dma_iv, dma_dst;
+ int err = 0;
+ int flow = 3;
+ unsigned int todo;
+ struct sun8i_ce_flow *chan;
+ struct ce_task *cet;
+ u32 common, sym;
+ void *d;
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.rng);
+ ce = algt->ce;
+
+ if (ctx->slen == 0) {
+ dev_err(ce->dev, "not seeded\n");
+ return -EINVAL;
+ }
+
+ /* we want dlen + seedsize rounded up to a multiple of PRNG_DATA_SIZE */
+ todo = dlen + ctx->slen + PRNG_DATA_SIZE * 2;
+ todo -= todo % PRNG_DATA_SIZE;
+
+ d = kzalloc(todo, GFP_KERNEL | GFP_DMA);
+ if (!d) {
+ err = -ENOMEM;
+ goto err_mem;
+ }
+
+ dev_dbg(ce->dev, "%s PRNG slen=%u dlen=%u todo=%u multi=%u\n", __func__,
+ slen, dlen, todo, todo / PRNG_DATA_SIZE);
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt->stat_req++;
+ algt->stat_bytes += todo;
+#endif
+
+ dma_iv = dma_map_single(ce->dev, ctx->seed, ctx->slen, DMA_TO_DEVICE);
+ if (dma_mapping_error(ce->dev, dma_iv)) {
+ dev_err(ce->dev, "Cannot DMA MAP IV\n");
+ goto err_iv;
+ }
+
+ dma_dst = dma_map_single(ce->dev, d, todo, DMA_FROM_DEVICE);
+ if (dma_mapping_error(ce->dev, dma_dst)) {
+ dev_err(ce->dev, "Cannot DMA MAP DST\n");
+ err = -EFAULT;
+ goto err_dst;
+ }
+
+ err = pm_runtime_get_sync(ce->dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(ce->dev);
+ goto err_pm;
+ }
+
+ mutex_lock(&ce->rnglock);
+ chan = &ce->chanlist[flow];
+
+ cet = &chan->tl[0];
+ memset(cet, 0, sizeof(struct ce_task));
+
+ cet->t_id = cpu_to_le32(flow);
+ common = ce->variant->prng | CE_COMM_INT;
+ cet->t_common_ctl = cpu_to_le32(common);
+
+ /* recent CE (H6) need length in bytes, in word otherwise */
+ if (ce->variant->prng_t_dlen_in_bytes)
+ cet->t_dlen = cpu_to_le32(todo);
+ else
+ cet->t_dlen = cpu_to_le32(todo / 4);
+
+ sym = PRNG_LD;
+ cet->t_sym_ctl = cpu_to_le32(sym);
+ cet->t_asym_ctl = 0;
+
+ cet->t_key = cpu_to_le32(dma_iv);
+ cet->t_iv = cpu_to_le32(dma_iv);
+
+ cet->t_dst[0].addr = cpu_to_le32(dma_dst);
+ cet->t_dst[0].len = cpu_to_le32(todo / 4);
+ ce->chanlist[flow].timeout = 2000;
+
+ err = sun8i_ce_run_task(ce, 3, "PRNG");
+ mutex_unlock(&ce->rnglock);
+
+ pm_runtime_put(ce->dev);
+
+err_pm:
+ dma_unmap_single(ce->dev, dma_dst, todo, DMA_FROM_DEVICE);
+err_dst:
+ dma_unmap_single(ce->dev, dma_iv, ctx->slen, DMA_TO_DEVICE);
+
+ if (!err) {
+ memcpy(dst, d, dlen);
+ memcpy(ctx->seed, d + dlen, ctx->slen);
+ }
+ memzero_explicit(d, todo);
+err_iv:
+ kfree(d);
+err_mem:
+ return err;
+}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 910b510d7bb2..48d518539c29 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -14,6 +14,7 @@
#include <linux/crypto.h>
#include <crypto/internal/hash.h>
#include <crypto/md5.h>
+#include <crypto/rng.h>
#include <crypto/sha.h>
/* CE Registers */
@@ -54,6 +55,8 @@
#define CE_ALG_SHA256 19
#define CE_ALG_SHA384 20
#define CE_ALG_SHA512 21
+#define CE_ALG_PRNG 49
+#define CE_ALG_PRNG_V2 0x1d
/* Used in ce_variant */
#define CE_ID_NOTSUPP 0xFF
@@ -88,6 +91,10 @@
#define ESR_H5 3
#define ESR_H6 4
+#define PRNG_DATA_SIZE (160 / 8)
+#define PRNG_SEED_SIZE DIV_ROUND_UP(175, 8)
+#define PRNG_LD BIT(17)
+
#define CE_DIE_ID_SHIFT 16
#define CE_DIE_ID_MASK 0x07
@@ -120,8 +127,11 @@ struct ce_clock {
* bytes or words
* @hash_t_dlen_in_bytes: Does the request size for hash is in
* bits or words
+ * @prng_t_dlen_in_bytes: Does the request size for PRNG is in
+ * bytes or words
* @ce_clks: list of clocks needed by this variant
* @esr: The type of error register
+ * @prng: The CE_ALG_XXX value for the PRNG
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
@@ -129,8 +139,10 @@ struct ce_variant {
u32 op_mode[CE_ID_OP_MAX];
bool cipher_t_dlen_in_bytes;
bool hash_t_dlen_in_bits;
+ bool prng_t_dlen_in_bytes;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
int esr;
+ unsigned char prng;
};
struct sginfo {
@@ -185,6 +197,7 @@ struct sun8i_ce_flow {
* @reset: pointer to reset controller
* @dev: the platform device
* @mlock: Control access to device registers
+ * @rnglock: Control access to the RNG (dedicated channel 3)
* @chanlist: array of all flow
* @flow: flow to use in next request
* @variant: pointer to variant specific data
@@ -197,6 +210,7 @@ struct sun8i_ce_dev {
struct reset_control *reset;
struct device *dev;
struct mutex mlock;
+ struct mutex rnglock;
struct sun8i_ce_flow *chanlist;
atomic_t flow;
const struct ce_variant *variant;
@@ -266,6 +280,16 @@ struct sun8i_ce_hash_reqctx {
int flow;
};
+/*
+ * struct sun8i_ce_prng_ctx - context for PRNG TFM
+ * @seed: The seed to use
+ * @slen: The size of the seed
+ */
+struct sun8i_ce_rng_tfm_ctx {
+ void *seed;
+ unsigned int slen;
+};
+
/*
* struct sun8i_ce_alg_template - crypto_alg template
* @type: the CRYPTO_ALG_TYPE for this template
@@ -286,6 +310,7 @@ struct sun8i_ce_alg_template {
union {
struct skcipher_alg skcipher;
struct ahash_alg hash;
+ struct rng_alg rng;
} alg;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
unsigned long stat_req;
@@ -320,3 +345,9 @@ int sun8i_ce_hash_update(struct ahash_request *areq);
int sun8i_ce_hash_finup(struct ahash_request *areq);
int sun8i_ce_hash_digest(struct ahash_request *areq);
int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq);
+
+int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int dlen);
+int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
+void sun8i_ce_prng_exit(struct crypto_tfm *tfm);
+int sun8i_ce_prng_init(struct crypto_tfm *tfm);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 15/18] crypto: sun8i-ce: Add support for the TRNG
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (13 preceding siblings ...)
2020-09-04 11:09 ` [PATCH v6 14/18] crypto: sun8i-ce: Add support for the PRNG Corentin Labbe
@ 2020-09-04 11:10 ` Corentin Labbe
2020-09-04 11:10 ` [PATCH v6 16/18] crypto: sun8i-ce: fix comparison of integer expressions of different signedness Corentin Labbe
` (2 subsequent siblings)
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:10 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch had support for the TRNG present in the CE.
Note that according to the algorithm ID, 2 version of the TRNG exists,
the first present in H3/H5/R40/A64 and the second present in H6.
This patch adds support for both, but only the second is working
reliabily according to rngtest.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 8 ++
drivers/crypto/allwinner/sun8i-ce/Makefile | 1 +
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 18 +++
.../crypto/allwinner/sun8i-ce/sun8i-ce-trng.c | 127 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 18 +++
5 files changed, 172 insertions(+)
create mode 100644 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-trng.c
diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index bf4d2a6328dc..0e72543ad1f1 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -96,6 +96,14 @@ config CRYPTO_DEV_SUN8I_CE_PRNG
Select this option if you want to provide kernel-side support for
the Pseudo-Random Number Generator found in the Crypto Engine.
+config CRYPTO_DEV_SUN8I_CE_TRNG
+ bool "Support for Allwinner Crypto Engine TRNG"
+ depends on CRYPTO_DEV_SUN8I_CE
+ select HW_RANDOM
+ help
+ Select this option if you want to provide kernel-side support for
+ the True Random Number Generator found in the Crypto Engine.
+
config CRYPTO_DEV_SUN8I_SS
tristate "Support for Allwinner Security System cryptographic offloader"
select CRYPTO_SKCIPHER
diff --git a/drivers/crypto/allwinner/sun8i-ce/Makefile b/drivers/crypto/allwinner/sun8i-ce/Makefile
index c0ea81da2c7d..0842eb2d9408 100644
--- a/drivers/crypto/allwinner/sun8i-ce/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ce/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_CRYPTO_DEV_SUN8I_CE) += sun8i-ce.o
sun8i-ce-y += sun8i-ce-core.o sun8i-ce-cipher.o
sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_HASH) += sun8i-ce-hash.o
sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_PRNG) += sun8i-ce-prng.o
+sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG) += sun8i-ce-trng.o
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 9b7f8fdc4992..116425e3d2b9 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -47,6 +47,7 @@ static const struct ce_variant ce_h3_variant = {
},
.esr = ESR_H3,
.prng = CE_ALG_PRNG,
+ .trng = CE_ID_NOTSUPP,
};
static const struct ce_variant ce_h5_variant = {
@@ -63,6 +64,7 @@ static const struct ce_variant ce_h5_variant = {
},
.esr = ESR_H5,
.prng = CE_ALG_PRNG,
+ .trng = CE_ID_NOTSUPP,
};
static const struct ce_variant ce_h6_variant = {
@@ -76,6 +78,7 @@ static const struct ce_variant ce_h6_variant = {
.cipher_t_dlen_in_bytes = true,
.hash_t_dlen_in_bits = true,
.prng_t_dlen_in_bytes = true,
+ .trng_t_dlen_in_bytes = true,
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
@@ -83,6 +86,7 @@ static const struct ce_variant ce_h6_variant = {
},
.esr = ESR_H6,
.prng = CE_ALG_PRNG_V2,
+ .trng = CE_ALG_TRNG_V2,
};
static const struct ce_variant ce_a64_variant = {
@@ -99,6 +103,7 @@ static const struct ce_variant ce_a64_variant = {
},
.esr = ESR_A64,
.prng = CE_ALG_PRNG,
+ .trng = CE_ID_NOTSUPP,
};
static const struct ce_variant ce_r40_variant = {
@@ -115,6 +120,7 @@ static const struct ce_variant ce_r40_variant = {
},
.esr = ESR_R40,
.prng = CE_ALG_PRNG,
+ .trng = CE_ID_NOTSUPP,
};
/*
@@ -589,6 +595,10 @@ static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
break;
}
}
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG
+ seq_printf(seq, "HWRNG %lu %lu\n",
+ ce->hwrng_stat_req, ce->hwrng_stat_bytes);
+#endif
return 0;
}
@@ -939,6 +949,10 @@ static int sun8i_ce_probe(struct platform_device *pdev)
if (err < 0)
goto error_alg;
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG
+ sun8i_ce_hwrng_register(ce);
+#endif
+
v = readl(ce->base + CE_CTR);
v >>= CE_DIE_ID_SHIFT;
v &= CE_DIE_ID_MASK;
@@ -968,6 +982,10 @@ static int sun8i_ce_remove(struct platform_device *pdev)
{
struct sun8i_ce_dev *ce = platform_get_drvdata(pdev);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG
+ sun8i_ce_hwrng_unregister(ce);
+#endif
+
sun8i_ce_unregister_algs(ce);
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-trng.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-trng.c
new file mode 100644
index 000000000000..af99730d8fd1
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-trng.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sun8i-ce-trng.c - hardware cryptographic offloader for
+ * Allwinner H3/A64/H5/H2+/H6/R40 SoC
+ *
+ * Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
+ *
+ * This file handle the TRNG
+ *
+ * You could find a link for the datasheet in Documentation/arm/sunxi/README
+ */
+#include "sun8i-ce.h"
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <linux/hw_random.h>
+/*
+ * Note that according to the algorithm ID, 2 versions of the TRNG exists,
+ * The first present in H3/H5/R40/A64 and the second present in H6.
+ * This file adds support for both, but only the second is working
+ * reliabily according to rngtest.
+ **/
+
+static int sun8i_ce_trng_read(struct hwrng *rng, void *data, size_t max, bool wait)
+{
+ struct sun8i_ce_dev *ce;
+ dma_addr_t dma_dst;
+ int err = 0;
+ int flow = 3;
+ unsigned int todo;
+ struct sun8i_ce_flow *chan;
+ struct ce_task *cet;
+ u32 common;
+ void *d;
+
+ ce = container_of(rng, struct sun8i_ce_dev, trng);
+
+ /* round the data length to a multiple of 32*/
+ todo = max + 32;
+ todo -= todo % 32;
+
+ d = kzalloc(todo, GFP_KERNEL | GFP_DMA);
+ if (!d)
+ return -ENOMEM;
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ ce->hwrng_stat_req++;
+ ce->hwrng_stat_bytes += todo;
+#endif
+
+ dma_dst = dma_map_single(ce->dev, d, todo, DMA_FROM_DEVICE);
+ if (dma_mapping_error(ce->dev, dma_dst)) {
+ dev_err(ce->dev, "Cannot DMA MAP DST\n");
+ err = -EFAULT;
+ goto err_dst;
+ }
+
+ err = pm_runtime_get_sync(ce->dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(ce->dev);
+ goto err_pm;
+ }
+
+ mutex_lock(&ce->rnglock);
+ chan = &ce->chanlist[flow];
+
+ cet = &chan->tl[0];
+ memset(cet, 0, sizeof(struct ce_task));
+
+ cet->t_id = cpu_to_le32(flow);
+ common = ce->variant->trng | CE_COMM_INT;
+ cet->t_common_ctl = cpu_to_le32(common);
+
+ /* recent CE (H6) need length in bytes, in word otherwise */
+ if (ce->variant->trng_t_dlen_in_bytes)
+ cet->t_dlen = cpu_to_le32(todo);
+ else
+ cet->t_dlen = cpu_to_le32(todo / 4);
+
+ cet->t_sym_ctl = 0;
+ cet->t_asym_ctl = 0;
+
+ cet->t_dst[0].addr = cpu_to_le32(dma_dst);
+ cet->t_dst[0].len = cpu_to_le32(todo / 4);
+ ce->chanlist[flow].timeout = todo;
+
+ err = sun8i_ce_run_task(ce, 3, "TRNG");
+ mutex_unlock(&ce->rnglock);
+
+ pm_runtime_put(ce->dev);
+
+err_pm:
+ dma_unmap_single(ce->dev, dma_dst, todo, DMA_FROM_DEVICE);
+
+ if (!err) {
+ memcpy(data, d, max);
+ err = max;
+ }
+ memzero_explicit(d, todo);
+err_dst:
+ kfree(d);
+ return err;
+}
+
+int sun8i_ce_hwrng_register(struct sun8i_ce_dev *ce)
+{
+ int ret;
+
+ if (ce->variant->trng == CE_ID_NOTSUPP) {
+ dev_info(ce->dev, "TRNG not supported\n");
+ return 0;
+ }
+ ce->trng.name = "sun8i Crypto Engine TRNG";
+ ce->trng.read = sun8i_ce_trng_read;
+ ce->trng.quality = 1000;
+
+ ret = hwrng_register(&ce->trng);
+ if (ret)
+ dev_err(ce->dev, "Fail to register the TRNG\n");
+ return ret;
+}
+
+void sun8i_ce_hwrng_unregister(struct sun8i_ce_dev *ce)
+{
+ if (ce->variant->trng == CE_ID_NOTSUPP)
+ return;
+ hwrng_unregister(&ce->trng);
+}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 48d518539c29..5ab71e696860 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -12,6 +12,7 @@
#include <linux/atomic.h>
#include <linux/debugfs.h>
#include <linux/crypto.h>
+#include <linux/hw_random.h>
#include <crypto/internal/hash.h>
#include <crypto/md5.h>
#include <crypto/rng.h>
@@ -55,7 +56,9 @@
#define CE_ALG_SHA256 19
#define CE_ALG_SHA384 20
#define CE_ALG_SHA512 21
+#define CE_ALG_TRNG 48
#define CE_ALG_PRNG 49
+#define CE_ALG_TRNG_V2 0x1c
#define CE_ALG_PRNG_V2 0x1d
/* Used in ce_variant */
@@ -129,9 +132,12 @@ struct ce_clock {
* bits or words
* @prng_t_dlen_in_bytes: Does the request size for PRNG is in
* bytes or words
+ * @trng_t_dlen_in_bytes: Does the request size for TRNG is in
+ * bytes or words
* @ce_clks: list of clocks needed by this variant
* @esr: The type of error register
* @prng: The CE_ALG_XXX value for the PRNG
+ * @trng: The CE_ALG_XXX value for the TRNG
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
@@ -140,9 +146,11 @@ struct ce_variant {
bool cipher_t_dlen_in_bytes;
bool hash_t_dlen_in_bits;
bool prng_t_dlen_in_bytes;
+ bool trng_t_dlen_in_bytes;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
int esr;
unsigned char prng;
+ unsigned char trng;
};
struct sginfo {
@@ -218,6 +226,13 @@ struct sun8i_ce_dev {
struct dentry *dbgfs_dir;
struct dentry *dbgfs_stats;
#endif
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG
+ struct hwrng trng;
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ unsigned long hwrng_stat_req;
+ unsigned long hwrng_stat_bytes;
+#endif
+#endif
};
/*
@@ -351,3 +366,6 @@ int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src,
int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
void sun8i_ce_prng_exit(struct crypto_tfm *tfm);
int sun8i_ce_prng_init(struct crypto_tfm *tfm);
+
+int sun8i_ce_hwrng_register(struct sun8i_ce_dev *ce);
+void sun8i_ce_hwrng_unregister(struct sun8i_ce_dev *ce);
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 16/18] crypto: sun8i-ce: fix comparison of integer expressions of different signedness
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (14 preceding siblings ...)
2020-09-04 11:10 ` [PATCH v6 15/18] crypto: sun8i-ce: Add support for the TRNG Corentin Labbe
@ 2020-09-04 11:10 ` Corentin Labbe
2020-09-04 11:10 ` [PATCH v6 17/18] crypto: sun8i-ss: " Corentin Labbe
2020-09-04 11:10 ` [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue Corentin Labbe
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:10 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch fixes the warning:
warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 116425e3d2b9..cf320898a4b1 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -566,7 +566,7 @@ static struct sun8i_ce_alg_template ce_algs[] = {
static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
{
struct sun8i_ce_dev *ce = seq->private;
- int i;
+ unsigned int i;
for (i = 0; i < MAXFLOW; i++)
seq_printf(seq, "Channel %d: nreq %lu\n", i, ce->chanlist[i].stat_req);
@@ -778,7 +778,8 @@ static int sun8i_ce_get_clks(struct sun8i_ce_dev *ce)
static int sun8i_ce_register_algs(struct sun8i_ce_dev *ce)
{
- int ce_method, err, id, i;
+ int ce_method, err, id;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(ce_algs); i++) {
ce_algs[i].ce = ce;
@@ -858,7 +859,7 @@ static int sun8i_ce_register_algs(struct sun8i_ce_dev *ce)
static void sun8i_ce_unregister_algs(struct sun8i_ce_dev *ce)
{
- int i;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(ce_algs); i++) {
if (!ce_algs[i].ce)
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 17/18] crypto: sun8i-ss: fix comparison of integer expressions of different signedness
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (15 preceding siblings ...)
2020-09-04 11:10 ` [PATCH v6 16/18] crypto: sun8i-ce: fix comparison of integer expressions of different signedness Corentin Labbe
@ 2020-09-04 11:10 ` Corentin Labbe
2020-09-04 11:10 ` [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue Corentin Labbe
17 siblings, 0 replies; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:10 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch fixes the warning:
warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index 739874596c72..c9cfe20b383d 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -414,7 +414,7 @@ static struct sun8i_ss_alg_template ss_algs[] = {
static int sun8i_ss_dbgfs_read(struct seq_file *seq, void *v)
{
struct sun8i_ss_dev *ss = seq->private;
- int i;
+ unsigned int i;
for (i = 0; i < MAXFLOW; i++)
seq_printf(seq, "Channel %d: nreq %lu\n", i, ss->flows[i].stat_req);
@@ -571,7 +571,8 @@ static void sun8i_ss_pm_exit(struct sun8i_ss_dev *ss)
static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss)
{
- int ss_method, err, id, i;
+ int ss_method, err, id;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(ss_algs); i++) {
ss_algs[i].ss = ss;
@@ -642,7 +643,7 @@ static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss)
static void sun8i_ss_unregister_algs(struct sun8i_ss_dev *ss)
{
- int i;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(ss_algs); i++) {
if (!ss_algs[i].ss)
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue
2020-09-04 11:09 [PATCH v6 00/18] crypto: allwinner: add xRNG and hashes Corentin Labbe
` (16 preceding siblings ...)
2020-09-04 11:10 ` [PATCH v6 17/18] crypto: sun8i-ss: " Corentin Labbe
@ 2020-09-04 11:10 ` Corentin Labbe
2020-09-04 19:37 ` Joe Perches
17 siblings, 1 reply; 23+ messages in thread
From: Corentin Labbe @ 2020-09-04 11:10 UTC (permalink / raw)
To: davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi,
Corentin Labbe
This patch fix a double empty line issue reported by checkpatch.
While at it, since now the maximum line length is now 100, reorder some
wrapped line.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
.../allwinner/sun8i-ce/sun8i-ce-cipher.c | 34 ++++++-------------
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 9 ++---
2 files changed, 14 insertions(+), 29 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index 2dcf508b0f18..9dae2be26e48 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -164,12 +164,10 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
goto theend_key;
}
offset = areq->cryptlen - ivsize;
- scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
- offset, ivsize, 0);
+ scatterwalk_map_and_copy(rctx->backup_iv, areq->src, offset, ivsize, 0);
}
memcpy(rctx->bounce_iv, areq->iv, ivsize);
- addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen,
- DMA_TO_DEVICE);
+ addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen, DMA_TO_DEVICE);
cet->t_iv = cpu_to_le32(addr_iv);
if (dma_mapping_error(ce->dev, addr_iv)) {
dev_err(ce->dev, "Cannot DMA MAP IV\n");
@@ -179,8 +177,7 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
}
if (areq->src == areq->dst) {
- nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src),
- DMA_BIDIRECTIONAL);
+ nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src), DMA_BIDIRECTIONAL);
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
@@ -188,15 +185,13 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
}
nr_sgd = nr_sgs;
} else {
- nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src),
- DMA_TO_DEVICE);
+ nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend_iv;
}
- nr_sgd = dma_map_sg(ce->dev, areq->dst, sg_nents(areq->dst),
- DMA_FROM_DEVICE);
+ nr_sgd = dma_map_sg(ce->dev, areq->dst, sg_nents(areq->dst), DMA_FROM_DEVICE);
if (nr_sgd <= 0 || nr_sgd > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgd);
err = -EINVAL;
@@ -251,15 +246,13 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
theend_iv:
if (areq->iv && ivsize > 0) {
if (addr_iv)
- dma_unmap_single(ce->dev, addr_iv, rctx->ivlen,
- DMA_TO_DEVICE);
+ dma_unmap_single(ce->dev, addr_iv, rctx->ivlen, DMA_TO_DEVICE);
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & CE_DECRYPTION) {
memcpy(areq->iv, rctx->backup_iv, ivsize);
kfree_sensitive(rctx->backup_iv);
} else {
- scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
- ivsize, 0);
+ scatterwalk_map_and_copy(areq->iv, areq->dst, offset, ivsize, 0);
}
kfree(rctx->bounce_iv);
}
@@ -315,15 +308,13 @@ static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_r
if (areq->iv && ivsize > 0) {
if (cet->t_iv)
- dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen,
- DMA_TO_DEVICE);
+ dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen, DMA_TO_DEVICE);
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & CE_DECRYPTION) {
memcpy(areq->iv, rctx->backup_iv, ivsize);
kfree_sensitive(rctx->backup_iv);
} else {
- scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
- ivsize, 0);
+ scatterwalk_map_and_copy(areq->iv, areq->dst, offset, ivsize, 0);
}
kfree(rctx->bounce_iv);
}
@@ -395,7 +386,6 @@ int sun8i_ce_cipher_init(struct crypto_tfm *tfm)
sktfm->reqsize = sizeof(struct sun8i_cipher_req_ctx) +
crypto_skcipher_reqsize(op->fallback_tfm);
-
dev_info(op->ce->dev, "Fallback for %s is %s\n",
crypto_tfm_alg_driver_name(&sktfm->base),
crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm)));
@@ -427,8 +417,7 @@ void sun8i_ce_cipher_exit(struct crypto_tfm *tfm)
pm_runtime_put_sync_suspend(op->ce->dev);
}
-int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
+int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen)
{
struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
struct sun8i_ce_dev *ce = op->ce;
@@ -459,8 +448,7 @@ int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
return crypto_skcipher_setkey(op->fallback_tfm, key, keylen);
}
-int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
+int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen)
{
struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
int err;
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index cf320898a4b1..1dbbd40ad576 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -596,8 +596,7 @@ static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
}
}
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG
- seq_printf(seq, "HWRNG %lu %lu\n",
- ce->hwrng_stat_req, ce->hwrng_stat_bytes);
+ seq_printf(seq, "HWRNG %lu %lu\n", ce->hwrng_stat_req, ce->hwrng_stat_bytes);
#endif
return 0;
}
@@ -635,8 +634,7 @@ static int sun8i_ce_allocate_chanlist(struct sun8i_ce_dev *ce)
{
int i, err;
- ce->chanlist = devm_kcalloc(ce->dev, MAXFLOW,
- sizeof(struct sun8i_ce_flow), GFP_KERNEL);
+ ce->chanlist = devm_kcalloc(ce->dev, MAXFLOW, sizeof(struct sun8i_ce_flow), GFP_KERNEL);
if (!ce->chanlist)
return -ENOMEM;
@@ -935,8 +933,7 @@ static int sun8i_ce_probe(struct platform_device *pdev)
if (err)
goto error_pm;
- err = devm_request_irq(&pdev->dev, irq, ce_irq_handler, 0,
- "sun8i-ce-ns", ce);
+ err = devm_request_irq(&pdev->dev, irq, ce_irq_handler, 0, "sun8i-ce-ns", ce);
if (err) {
dev_err(ce->dev, "Cannot request CryptoEngine Non-secure IRQ (err=%d)\n", err);
goto error_irq;
--
2.26.2
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue
2020-09-04 11:10 ` [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue Corentin Labbe
@ 2020-09-04 19:37 ` Joe Perches
2020-09-07 7:16 ` [linux-sunxi] " Corentin Labbe
0 siblings, 1 reply; 23+ messages in thread
From: Joe Perches @ 2020-09-04 19:37 UTC (permalink / raw)
To: Corentin Labbe, davem, herbert, mripard, wens
Cc: linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi
On Fri, 2020-09-04 at 11:10 +0000, Corentin Labbe wrote:
> This patch fix a double empty line issue reported by checkpatch.
> While at it, since now the maximum line length is now 100, reorder some
> wrapped line.
[]
> diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
[]
> @@ -164,12 +164,10 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
> goto theend_key;
> }
> offset = areq->cryptlen - ivsize;
> - scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
> - offset, ivsize, 0);
> + scatterwalk_map_and_copy(rctx->backup_iv, areq->src, offset, ivsize, 0);
> }
> memcpy(rctx->bounce_iv, areq->iv, ivsize);
> - addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen,
> - DMA_TO_DEVICE);
> + addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen, DMA_TO_DEVICE);
coding-style.rst:
Statements longer than 80 columns should be broken into sensible chunks,
unless exceeding 80 columns significantly increases readability and does
not hide information.
Do these longer lines make the code significantly more readable?
I don't think they do.
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [linux-sunxi] Re: [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue
2020-09-04 19:37 ` Joe Perches
@ 2020-09-07 7:16 ` Corentin Labbe
2020-09-07 7:18 ` Herbert Xu
0 siblings, 1 reply; 23+ messages in thread
From: Corentin Labbe @ 2020-09-07 7:16 UTC (permalink / raw)
To: Joe Perches, herbert
Cc: Corentin Labbe, davem, mripard, wens, linux-arm-kernel,
linux-crypto, linux-kernel, linux-sunxi
On Fri, Sep 04, 2020 at 12:37:19PM -0700, Joe Perches wrote:
> On Fri, 2020-09-04 at 11:10 +0000, Corentin Labbe wrote:
> > This patch fix a double empty line issue reported by checkpatch.
> > While at it, since now the maximum line length is now 100, reorder some
> > wrapped line.
> []
> > diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
> []
> > @@ -164,12 +164,10 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
> > goto theend_key;
> > }
> > offset = areq->cryptlen - ivsize;
> > - scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
> > - offset, ivsize, 0);
> > + scatterwalk_map_and_copy(rctx->backup_iv, areq->src, offset, ivsize, 0);
> > }
> > memcpy(rctx->bounce_iv, areq->iv, ivsize);
> > - addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen,
> > - DMA_TO_DEVICE);
> > + addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen, DMA_TO_DEVICE);
>
> coding-style.rst:
>
> Statements longer than 80 columns should be broken into sensible chunks,
> unless exceeding 80 columns significantly increases readability and does
> not hide information.
>
> Do these longer lines make the code significantly more readable?
> I don't think they do.
>
Oh I saw the increase in checkpatch.pl but didnt saw that it was still 80 in coding-style.rst.
Anyway as maintainer of this driver, I prefer unwrapped lines.
I let Herbert to choose to apply the serie without this last patch or not.
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [linux-sunxi] Re: [PATCH v6 18/18] crypto: sun8i-ce: fix some style issue
2020-09-07 7:16 ` [linux-sunxi] " Corentin Labbe
@ 2020-09-07 7:18 ` Herbert Xu
0 siblings, 0 replies; 23+ messages in thread
From: Herbert Xu @ 2020-09-07 7:18 UTC (permalink / raw)
To: Corentin Labbe
Cc: Joe Perches, Corentin Labbe, davem, mripard, wens,
linux-arm-kernel, linux-crypto, linux-kernel, linux-sunxi
On Mon, Sep 07, 2020 at 09:16:17AM +0200, Corentin Labbe wrote:
>
> Oh I saw the increase in checkpatch.pl but didnt saw that it was still 80 in coding-style.rst.
> Anyway as maintainer of this driver, I prefer unwrapped lines.
>
> I let Herbert to choose to apply the serie without this last patch or not.
While lines beyond 80 characters are allowed, please don't send
patches that simply rewrite existing lines as longer ones.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 23+ messages in thread