This patch series add driver support for StarFive JH8100 SoC crypto
engine. Patch 1 adds compatible for jh8100 to dt-bindings. Patch 2 and 3
updates current driver dma usage for compatibility with different device
variants. Patch 4 and 5 adds new sm3 and sm4 algo support to device
driver.
v1->v2:
- Resolved build warnings reported by kernel test robot
https://lore.kernel.org/oe-kbuild-all/[email protected]/
- Add Acked-by for patch 1
Jia Jie Ho (5):
dt-bindings: crypto: starfive: Add jh8100 compatible string
crypto: starfive: Update hash dma usage
crypto: starfive: Use dma for aes requests
crypto: starfive: Add sm3 support for JH8100
crypto: starfive: Add sm4 support for JH8100
.../crypto/starfive,jh7110-crypto.yaml | 6 +-
drivers/crypto/starfive/Kconfig | 30 +-
drivers/crypto/starfive/Makefile | 3 +
drivers/crypto/starfive/jh7110-aes.c | 585 ++++++---
drivers/crypto/starfive/jh7110-cryp.c | 65 +-
drivers/crypto/starfive/jh7110-cryp.h | 104 +-
drivers/crypto/starfive/jh7110-hash.c | 275 ++--
drivers/crypto/starfive/jh8100-sm3.c | 532 ++++++++
drivers/crypto/starfive/jh8100-sm4.c | 1107 +++++++++++++++++
9 files changed, 2329 insertions(+), 378 deletions(-)
create mode 100644 drivers/crypto/starfive/jh8100-sm3.c
create mode 100644 drivers/crypto/starfive/jh8100-sm4.c
--
2.34.1
Current hash uses sw fallback for non-word aligned input scatterlists.
Add support for unaligned cases utilizing the data valid mask for dma.
Signed-off-by: Jia Jie Ho <[email protected]>
---
drivers/crypto/starfive/jh7110-cryp.h | 1 +
drivers/crypto/starfive/jh7110-hash.c | 257 ++++++++++----------------
2 files changed, 100 insertions(+), 158 deletions(-)
diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h
index 6cdf6db5d904..4940cd1a3fbb 100644
--- a/drivers/crypto/starfive/jh7110-cryp.h
+++ b/drivers/crypto/starfive/jh7110-cryp.h
@@ -190,6 +190,7 @@ struct starfive_cryp_dev {
struct crypto_engine *engine;
struct tasklet_struct aes_done;
struct tasklet_struct hash_done;
+ struct completion dma_done;
size_t assoclen;
size_t total_in;
size_t total_out;
diff --git a/drivers/crypto/starfive/jh7110-hash.c b/drivers/crypto/starfive/jh7110-hash.c
index b6d1808012ca..74e151b5f875 100644
--- a/drivers/crypto/starfive/jh7110-hash.c
+++ b/drivers/crypto/starfive/jh7110-hash.c
@@ -86,62 +86,31 @@ static int starfive_hash_hmac_key(struct starfive_cryp_ctx *ctx)
static void starfive_hash_start(void *param)
{
- struct starfive_cryp_ctx *ctx = param;
- struct starfive_cryp_request_ctx *rctx = ctx->rctx;
- struct starfive_cryp_dev *cryp = ctx->cryp;
- union starfive_alg_cr alg_cr;
+ struct starfive_cryp_dev *cryp = param;
union starfive_hash_csr csr;
- u32 stat;
-
- dma_unmap_sg(cryp->dev, rctx->in_sg, rctx->in_sg_len, DMA_TO_DEVICE);
-
- alg_cr.v = 0;
- alg_cr.clear = 1;
-
- writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET);
+ u32 mask;
csr.v = readl(cryp->base + STARFIVE_HASH_SHACSR);
csr.firstb = 0;
csr.final = 1;
-
- stat = readl(cryp->base + STARFIVE_IE_MASK_OFFSET);
- stat &= ~STARFIVE_IE_MASK_HASH_DONE;
- writel(stat, cryp->base + STARFIVE_IE_MASK_OFFSET);
+ csr.ie = 1;
writel(csr.v, cryp->base + STARFIVE_HASH_SHACSR);
+
+ mask = readl(cryp->base + STARFIVE_IE_MASK_OFFSET);
+ mask &= ~STARFIVE_IE_MASK_HASH_DONE;
+ writel(mask, cryp->base + STARFIVE_IE_MASK_OFFSET);
}
-static int starfive_hash_xmit_dma(struct starfive_cryp_ctx *ctx)
+static void starfive_hash_dma_callback(void *param)
{
- struct starfive_cryp_request_ctx *rctx = ctx->rctx;
- struct starfive_cryp_dev *cryp = ctx->cryp;
- struct dma_async_tx_descriptor *in_desc;
- union starfive_alg_cr alg_cr;
- int total_len;
- int ret;
-
- if (!rctx->total) {
- starfive_hash_start(ctx);
- return 0;
- }
+ struct starfive_cryp_dev *cryp = param;
- writel(rctx->total, cryp->base + STARFIVE_DMA_IN_LEN_OFFSET);
-
- total_len = rctx->total;
- total_len = (total_len & 0x3) ? (((total_len >> 2) + 1) << 2) : total_len;
- sg_dma_len(rctx->in_sg) = total_len;
-
- alg_cr.v = 0;
- alg_cr.start = 1;
- alg_cr.hash_dma_en = 1;
-
- writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET);
-
- ret = dma_map_sg(cryp->dev, rctx->in_sg, rctx->in_sg_len, DMA_TO_DEVICE);
- if (!ret)
- return dev_err_probe(cryp->dev, -EINVAL, "dma_map_sg() error\n");
+ complete(&cryp->dma_done);
+}
- cryp->cfg_in.direction = DMA_MEM_TO_DEV;
- cryp->cfg_in.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+static void starfive_hash_dma_init(struct starfive_cryp_dev *cryp)
+{
+ cryp->cfg_in.src_addr_width = DMA_SLAVE_BUSWIDTH_16_BYTES;
cryp->cfg_in.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
cryp->cfg_in.src_maxburst = cryp->dma_maxburst;
cryp->cfg_in.dst_maxburst = cryp->dma_maxburst;
@@ -149,50 +118,48 @@ static int starfive_hash_xmit_dma(struct starfive_cryp_ctx *ctx)
dmaengine_slave_config(cryp->tx, &cryp->cfg_in);
- in_desc = dmaengine_prep_slave_sg(cryp->tx, rctx->in_sg,
- ret, DMA_MEM_TO_DEV,
- DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-
- if (!in_desc)
- return -EINVAL;
-
- in_desc->callback = starfive_hash_start;
- in_desc->callback_param = ctx;
-
- dmaengine_submit(in_desc);
- dma_async_issue_pending(cryp->tx);
-
- return 0;
+ init_completion(&cryp->dma_done);
}
-static int starfive_hash_xmit(struct starfive_cryp_ctx *ctx)
+static int starfive_hash_dma_xfer(struct starfive_cryp_dev *cryp,
+ struct scatterlist *sg)
{
- struct starfive_cryp_request_ctx *rctx = ctx->rctx;
- struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct dma_async_tx_descriptor *in_desc;
+ union starfive_alg_cr alg_cr;
int ret = 0;
- rctx->csr.hash.v = 0;
- rctx->csr.hash.reset = 1;
- writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR);
-
- if (starfive_hash_wait_busy(ctx))
- return dev_err_probe(cryp->dev, -ETIMEDOUT, "Error resetting engine.\n");
+ alg_cr.v = 0;
+ alg_cr.start = 1;
+ alg_cr.hash_dma_en = 1;
+ writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET);
- rctx->csr.hash.v = 0;
- rctx->csr.hash.mode = ctx->hash_mode;
- rctx->csr.hash.ie = 1;
+ writel(sg_dma_len(sg), cryp->base + STARFIVE_DMA_IN_LEN_OFFSET);
+ sg_dma_len(sg) = ALIGN(sg_dma_len(sg), sizeof(u32));
- if (ctx->is_hmac) {
- ret = starfive_hash_hmac_key(ctx);
- if (ret)
- return ret;
- } else {
- rctx->csr.hash.start = 1;
- rctx->csr.hash.firstb = 1;
- writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR);
+ in_desc = dmaengine_prep_slave_sg(cryp->tx, sg, 1, DMA_MEM_TO_DEV,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!in_desc) {
+ ret = -EINVAL;
+ goto end;
}
- return starfive_hash_xmit_dma(ctx);
+ reinit_completion(&cryp->dma_done);
+ in_desc->callback = starfive_hash_dma_callback;
+ in_desc->callback_param = cryp;
+
+ dmaengine_submit(in_desc);
+ dma_async_issue_pending(cryp->tx);
+
+ if (!wait_for_completion_timeout(&cryp->dma_done,
+ msecs_to_jiffies(1000)))
+ ret = -ETIMEDOUT;
+
+end:
+ alg_cr.v = 0;
+ alg_cr.clear = 1;
+ writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET);
+
+ return ret;
}
static int starfive_hash_copy_hash(struct ahash_request *req)
@@ -229,44 +196,56 @@ void starfive_hash_done_task(unsigned long param)
crypto_finalize_hash_request(cryp->engine, cryp->req.hreq, err);
}
-static int starfive_hash_check_aligned(struct scatterlist *sg, size_t total, size_t align)
+static int starfive_hash_one_request(struct crypto_engine *engine, void *areq)
{
- int len = 0;
-
- if (!total)
- return 0;
+ struct ahash_request *req = container_of(areq, struct ahash_request,
+ base);
+ struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+ struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct scatterlist *tsg;
+ int ret, src_nents, i;
- if (!IS_ALIGNED(total, align))
- return -EINVAL;
+ writel(STARFIVE_HASH_RESET, cryp->base + STARFIVE_HASH_SHACSR);
- while (sg) {
- if (!IS_ALIGNED(sg->offset, sizeof(u32)))
- return -EINVAL;
+ if (starfive_hash_wait_busy(ctx))
+ return dev_err_probe(cryp->dev, -ETIMEDOUT, "Error resetting hardware.\n");
- if (!IS_ALIGNED(sg->length, align))
- return -EINVAL;
+ rctx->csr.hash.v = 0;
+ rctx->csr.hash.mode = ctx->hash_mode;
- len += sg->length;
- sg = sg_next(sg);
+ if (ctx->is_hmac) {
+ ret = starfive_hash_hmac_key(ctx);
+ if (ret)
+ return ret;
+ } else {
+ rctx->csr.hash.start = 1;
+ rctx->csr.hash.firstb = 1;
+ writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR);
}
- if (len != total)
- return -EINVAL;
+ /* No input message, get digest and end. */
+ if (!rctx->total)
+ goto hash_start;
- return 0;
-}
+ starfive_hash_dma_init(cryp);
-static int starfive_hash_one_request(struct crypto_engine *engine, void *areq)
-{
- struct ahash_request *req = container_of(areq, struct ahash_request,
- base);
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
- struct starfive_cryp_dev *cryp = ctx->cryp;
+ for_each_sg(rctx->in_sg, tsg, rctx->in_sg_len, i) {
+ src_nents = dma_map_sg(cryp->dev, tsg, 1, DMA_TO_DEVICE);
+ if (src_nents == 0)
+ return dev_err_probe(cryp->dev, -ENOMEM,
+ "dma_map_sg error\n");
- if (!cryp)
- return -ENODEV;
+ ret = starfive_hash_dma_xfer(cryp, tsg);
+ dma_unmap_sg(cryp->dev, tsg, 1, DMA_TO_DEVICE);
+ if (ret)
+ return ret;
+ }
+
+hash_start:
+ starfive_hash_start(cryp);
- return starfive_hash_xmit(ctx);
+ return 0;
}
static int starfive_hash_init(struct ahash_request *req)
@@ -337,22 +316,6 @@ static int starfive_hash_finup(struct ahash_request *req)
return crypto_ahash_finup(&rctx->ahash_fbk_req);
}
-static int starfive_hash_digest_fb(struct ahash_request *req)
-{
- struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req);
- struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm);
-
- ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk);
- ahash_request_set_callback(&rctx->ahash_fbk_req, req->base.flags,
- req->base.complete, req->base.data);
-
- ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src,
- req->result, req->nbytes);
-
- return crypto_ahash_digest(&rctx->ahash_fbk_req);
-}
-
static int starfive_hash_digest(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@@ -370,9 +333,6 @@ static int starfive_hash_digest(struct ahash_request *req)
rctx->in_sg_len = sg_nents_for_len(rctx->in_sg, rctx->total);
ctx->rctx = rctx;
- if (starfive_hash_check_aligned(rctx->in_sg, rctx->total, rctx->blksize))
- return starfive_hash_digest_fb(req);
-
return crypto_transfer_hash_request_to_engine(cryp->engine, req);
}
@@ -406,7 +366,8 @@ static int starfive_hash_import(struct ahash_request *req, const void *in)
static int starfive_hash_init_tfm(struct crypto_ahash *hash,
const char *alg_name,
- unsigned int mode)
+ unsigned int mode,
+ bool is_hmac)
{
struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
@@ -426,7 +387,7 @@ static int starfive_hash_init_tfm(struct crypto_ahash *hash,
crypto_ahash_set_reqsize(hash, sizeof(struct starfive_cryp_request_ctx) +
crypto_ahash_reqsize(ctx->ahash_fbk));
- ctx->keylen = 0;
+ ctx->is_hmac = is_hmac;
ctx->hash_mode = mode;
return 0;
@@ -529,81 +490,61 @@ static int starfive_hash_setkey(struct crypto_ahash *hash,
static int starfive_sha224_init_tfm(struct crypto_ahash *hash)
{
return starfive_hash_init_tfm(hash, "sha224-generic",
- STARFIVE_HASH_SHA224);
+ STARFIVE_HASH_SHA224, 0);
}
static int starfive_sha256_init_tfm(struct crypto_ahash *hash)
{
return starfive_hash_init_tfm(hash, "sha256-generic",
- STARFIVE_HASH_SHA256);
+ STARFIVE_HASH_SHA256, 0);
}
static int starfive_sha384_init_tfm(struct crypto_ahash *hash)
{
return starfive_hash_init_tfm(hash, "sha384-generic",
- STARFIVE_HASH_SHA384);
+ STARFIVE_HASH_SHA384, 0);
}
static int starfive_sha512_init_tfm(struct crypto_ahash *hash)
{
return starfive_hash_init_tfm(hash, "sha512-generic",
- STARFIVE_HASH_SHA512);
+ STARFIVE_HASH_SHA512, 0);
}
static int starfive_sm3_init_tfm(struct crypto_ahash *hash)
{
return starfive_hash_init_tfm(hash, "sm3-generic",
- STARFIVE_HASH_SM3);
+ STARFIVE_HASH_SM3, 0);
}
static int starfive_hmac_sha224_init_tfm(struct crypto_ahash *hash)
{
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
-
- ctx->is_hmac = true;
-
return starfive_hash_init_tfm(hash, "hmac(sha224-generic)",
- STARFIVE_HASH_SHA224);
+ STARFIVE_HASH_SHA224, 1);
}
static int starfive_hmac_sha256_init_tfm(struct crypto_ahash *hash)
{
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
-
- ctx->is_hmac = true;
-
return starfive_hash_init_tfm(hash, "hmac(sha256-generic)",
- STARFIVE_HASH_SHA256);
+ STARFIVE_HASH_SHA256, 1);
}
static int starfive_hmac_sha384_init_tfm(struct crypto_ahash *hash)
{
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
-
- ctx->is_hmac = true;
-
return starfive_hash_init_tfm(hash, "hmac(sha384-generic)",
- STARFIVE_HASH_SHA384);
+ STARFIVE_HASH_SHA384, 1);
}
static int starfive_hmac_sha512_init_tfm(struct crypto_ahash *hash)
{
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
-
- ctx->is_hmac = true;
-
return starfive_hash_init_tfm(hash, "hmac(sha512-generic)",
- STARFIVE_HASH_SHA512);
+ STARFIVE_HASH_SHA512, 1);
}
static int starfive_hmac_sm3_init_tfm(struct crypto_ahash *hash)
{
- struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash);
-
- ctx->is_hmac = true;
-
return starfive_hash_init_tfm(hash, "hmac(sm3-generic)",
- STARFIVE_HASH_SM3);
+ STARFIVE_HASH_SM3, 1);
}
static struct ahash_engine_alg algs_sha2_sm3[] = {
--
2.34.1
Add driver support for sm4 skcipher and aead for StarFive JH8100 SoC.
Signed-off-by: Jia Jie Ho <[email protected]>
---
drivers/crypto/starfive/Kconfig | 1 +
drivers/crypto/starfive/Makefile | 2 +-
drivers/crypto/starfive/jh7110-cryp.c | 8 +
drivers/crypto/starfive/jh7110-cryp.h | 39 +
drivers/crypto/starfive/jh8100-sm4.c | 1107 +++++++++++++++++++++++++
5 files changed, 1156 insertions(+), 1 deletion(-)
create mode 100644 drivers/crypto/starfive/jh8100-sm4.c
diff --git a/drivers/crypto/starfive/Kconfig b/drivers/crypto/starfive/Kconfig
index e6bf02d0ed1f..740bb70c5607 100644
--- a/drivers/crypto/starfive/Kconfig
+++ b/drivers/crypto/starfive/Kconfig
@@ -34,6 +34,7 @@ config CRYPTO_DEV_JH8100
select CRYPTO_SHA256
select CRYPTO_SHA512
select CRYPTO_SM3_GENERIC
+ select CRYPTO_SM4_GENERIC
select CRYPTO_RSA
select CRYPTO_AES
select CRYPTO_CCM
diff --git a/drivers/crypto/starfive/Makefile b/drivers/crypto/starfive/Makefile
index 67717fca3f5d..8370f20427fd 100644
--- a/drivers/crypto/starfive/Makefile
+++ b/drivers/crypto/starfive/Makefile
@@ -4,4 +4,4 @@ obj-$(CONFIG_CRYPTO_DEV_JH7110) += jh7110-crypto.o
jh7110-crypto-objs := jh7110-cryp.o jh7110-hash.o jh7110-rsa.o jh7110-aes.o
obj-$(CONFIG_CRYPTO_DEV_JH8100) += jh8100-crypto.o
-jh8100-crypto-objs := jh7110-cryp.o jh7110-hash.o jh7110-rsa.o jh7110-aes.o jh8100-sm3.o
+jh8100-crypto-objs := jh7110-cryp.o jh7110-hash.o jh7110-rsa.o jh7110-aes.o jh8100-sm3.o jh8100-sm4.o
diff --git a/drivers/crypto/starfive/jh7110-cryp.c b/drivers/crypto/starfive/jh7110-cryp.c
index fb7c19705fbf..63b801cd6555 100644
--- a/drivers/crypto/starfive/jh7110-cryp.c
+++ b/drivers/crypto/starfive/jh7110-cryp.c
@@ -225,10 +225,17 @@ static int starfive_cryp_probe(struct platform_device *pdev)
ret = starfive_sm3_register_algs();
if (ret)
goto err_algs_sm3;
+
+ ret = starfive_sm4_register_algs();
+ if (ret)
+ goto err_algs_sm4;
#endif
+
return 0;
#ifdef CONFIG_CRYPTO_DEV_JH8100
+err_algs_sm4:
+ starfive_sm3_unregister_algs();
err_algs_sm3:
starfive_rsa_unregister_algs();
#endif
@@ -269,6 +276,7 @@ static void starfive_cryp_remove(struct platform_device *pdev)
tasklet_kill(&cryp->hash_done);
#ifdef CONFIG_CRYPTO_DEV_JH8100
starfive_sm3_unregister_algs();
+ starfive_sm4_unregister_algs();
tasklet_kill(&cryp->sm3_done);
#endif
crypto_engine_stop(cryp->engine);
diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h
index a675ee4bc6cf..af7fa8aeb5d0 100644
--- a/drivers/crypto/starfive/jh7110-cryp.h
+++ b/drivers/crypto/starfive/jh7110-cryp.h
@@ -7,6 +7,7 @@
#include <crypto/scatterwalk.h>
#include <crypto/sha2.h>
#include <crypto/sm3.h>
+#include <crypto/sm4.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
@@ -182,6 +183,40 @@ union starfive_sm3_csr {
};
};
+union starfive_sm4_csr {
+ u32 v;
+ struct {
+ u32 cmode :1;
+ u32 rsvd_0 :1;
+ u32 ie :1;
+ u32 sm4rst :1;
+ u32 rsvd_1 :1;
+#define STARFIVE_SM4_DONE BIT(5)
+ u32 sm4done :1;
+#define STARFIVE_SM4_KEY_DONE BIT(6)
+ u32 krdy :1;
+ u32 busy :1;
+ u32 vsm4_start :1;
+ u32 delay_sm4 :1;
+#define STARFIVE_SM4_CCM_START BIT(10)
+ u32 ccm_start :1;
+#define STARFIVE_SM4_GCM_START BIT(11)
+ u32 gcm_start :1;
+ u32 rsvd_2 :4;
+#define STARFIVE_SM4_MODE_XFB_1 0x0
+#define STARFIVE_SM4_MODE_XFB_128 0x5
+ u32 stmode :3;
+ u32 rsvd_3 :2;
+#define STARFIVE_SM4_MODE_ECB 0x0
+#define STARFIVE_SM4_MODE_CBC 0x1
+#define STARFIVE_SM4_MODE_CTR 0x4
+#define STARFIVE_SM4_MODE_CCM 0x5
+#define STARFIVE_SM4_MODE_GCM 0x6
+ u32 mode :3;
+ u32 rsvd_4 :8;
+ };
+};
+
struct starfive_rsa_key {
u8 *n;
u8 *e;
@@ -263,6 +298,7 @@ struct starfive_cryp_request_ctx {
union starfive_pka_cacr pka;
union starfive_aes_csr aes;
union starfive_sm3_csr sm3;
+ union starfive_sm4_csr sm4;
} csr;
struct scatterlist *in_sg;
@@ -294,6 +330,9 @@ void starfive_hash_done_task(unsigned long param);
int starfive_sm3_register_algs(void);
void starfive_sm3_unregister_algs(void);
+int starfive_sm4_register_algs(void);
+void starfive_sm4_unregister_algs(void);
+
void starfive_sm3_done_task(unsigned long param);
#endif
#endif
diff --git a/drivers/crypto/starfive/jh8100-sm4.c b/drivers/crypto/starfive/jh8100-sm4.c
new file mode 100644
index 000000000000..ccde5fb793cc
--- /dev/null
+++ b/drivers/crypto/starfive/jh8100-sm4.c
@@ -0,0 +1,1107 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * StarFive SM4 acceleration driver
+ *
+ * Copyright (c) 2022 - 2023 StarFive Technology
+ */
+
+#include <crypto/engine.h>
+#include <crypto/gcm.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/aead.h>
+#include <crypto/internal/skcipher.h>
+#include "jh7110-cryp.h"
+#include <linux/iopoll.h>
+
+#define STARFIVE_SM4_REGS_OFFSET 0x4100
+#define STARFIVE_SM4_SM4DIO0R (STARFIVE_SM4_REGS_OFFSET + 0x0)
+#define STARFIVE_SM4_KEY0 (STARFIVE_SM4_REGS_OFFSET + 0x4)
+#define STARFIVE_SM4_KEY1 (STARFIVE_SM4_REGS_OFFSET + 0x8)
+#define STARFIVE_SM4_KEY2 (STARFIVE_SM4_REGS_OFFSET + 0xC)
+#define STARFIVE_SM4_KEY3 (STARFIVE_SM4_REGS_OFFSET + 0x10)
+#define STARFIVE_SM4_IV0 (STARFIVE_SM4_REGS_OFFSET + 0x14)
+#define STARFIVE_SM4_IV1 (STARFIVE_SM4_REGS_OFFSET + 0x18)
+#define STARFIVE_SM4_IV2 (STARFIVE_SM4_REGS_OFFSET + 0x1c)
+#define STARFIVE_SM4_IV3 (STARFIVE_SM4_REGS_OFFSET + 0x20)
+#define STARFIVE_SM4_CSR (STARFIVE_SM4_REGS_OFFSET + 0x24)
+#define STARFIVE_SM4_NONCE0 (STARFIVE_SM4_REGS_OFFSET + 0x30)
+#define STARFIVE_SM4_NONCE1 (STARFIVE_SM4_REGS_OFFSET + 0x34)
+#define STARFIVE_SM4_NONCE2 (STARFIVE_SM4_REGS_OFFSET + 0x38)
+#define STARFIVE_SM4_NONCE3 (STARFIVE_SM4_REGS_OFFSET + 0x3c)
+#define STARFIVE_SM4_ALEN0 (STARFIVE_SM4_REGS_OFFSET + 0x40)
+#define STARFIVE_SM4_ALEN1 (STARFIVE_SM4_REGS_OFFSET + 0x44)
+#define STARFIVE_SM4_MLEN0 (STARFIVE_SM4_REGS_OFFSET + 0x48)
+#define STARFIVE_SM4_MLEN1 (STARFIVE_SM4_REGS_OFFSET + 0x4c)
+#define STARFIVE_SM4_IVLEN (STARFIVE_SM4_REGS_OFFSET + 0x50)
+
+#define FLG_MODE_MASK GENMASK(2, 0)
+#define FLG_ENCRYPT BIT(4)
+
+/* Misc */
+#define CCM_B0_ADATA 0x40
+#define SM4_BLOCK_32 (SM4_BLOCK_SIZE / sizeof(u32))
+
+static inline int starfive_sm4_wait_done(struct starfive_cryp_dev *cryp)
+{
+ u32 status;
+
+ return readl_relaxed_poll_timeout(cryp->base + STARFIVE_SM4_CSR, status,
+ status & STARFIVE_SM4_DONE, 10, 100000);
+}
+
+static inline int starfive_sm4_wait_keydone(struct starfive_cryp_dev *cryp)
+{
+ u32 status;
+
+ return readl_relaxed_poll_timeout(cryp->base + STARFIVE_SM4_CSR, status,
+ status & STARFIVE_SM4_KEY_DONE, 10, 100000);
+}
+
+static inline int is_encrypt(struct starfive_cryp_dev *cryp)
+{
+ return cryp->flags & FLG_ENCRYPT;
+}
+
+static int starfive_sm4_aead_write_key(struct starfive_cryp_ctx *ctx, u32 hw_mode)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ unsigned int value;
+ u32 *key = (u32 *)ctx->key;
+
+ writel(key[0], cryp->base + STARFIVE_SM4_KEY0);
+ writel(key[1], cryp->base + STARFIVE_SM4_KEY1);
+ writel(key[2], cryp->base + STARFIVE_SM4_KEY2);
+ writel(key[3], cryp->base + STARFIVE_SM4_KEY3);
+
+ value = readl(ctx->cryp->base + STARFIVE_SM4_CSR);
+
+ if (hw_mode == STARFIVE_SM4_MODE_GCM)
+ value |= STARFIVE_SM4_GCM_START;
+ else
+ value |= STARFIVE_SM4_CCM_START;
+
+ writel(value, cryp->base + STARFIVE_SM4_CSR);
+
+ if (starfive_sm4_wait_keydone(cryp))
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static inline void starfive_sm4_set_alen(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+
+ writel(upper_32_bits(cryp->assoclen), cryp->base + STARFIVE_SM4_ALEN0);
+ writel(lower_32_bits(cryp->assoclen), cryp->base + STARFIVE_SM4_ALEN1);
+}
+
+static inline void starfive_sm4_set_mlen(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+
+ writel(upper_32_bits(cryp->total_in), cryp->base + STARFIVE_SM4_MLEN0);
+ writel(lower_32_bits(cryp->total_in), cryp->base + STARFIVE_SM4_MLEN1);
+}
+
+static inline int starfive_sm4_ccm_check_iv(const u8 *iv)
+{
+ /* 2 <= L <= 8, so 1 <= L' <= 7. */
+ if (iv[0] < 1 || iv[0] > 7)
+ return -EINVAL;
+
+ return 0;
+}
+
+static inline void starfive_sm4_write_iv(struct starfive_cryp_ctx *ctx, u32 *iv)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+
+ writel(iv[0], cryp->base + STARFIVE_SM4_IV0);
+ writel(iv[1], cryp->base + STARFIVE_SM4_IV1);
+ writel(iv[2], cryp->base + STARFIVE_SM4_IV2);
+ writel(iv[3], cryp->base + STARFIVE_SM4_IV3);
+}
+
+static inline void starfive_sm4_get_iv(struct starfive_cryp_dev *cryp, u32 *iv)
+{
+ iv[0] = readl(cryp->base + STARFIVE_SM4_IV0);
+ iv[1] = readl(cryp->base + STARFIVE_SM4_IV1);
+ iv[2] = readl(cryp->base + STARFIVE_SM4_IV2);
+ iv[3] = readl(cryp->base + STARFIVE_SM4_IV3);
+}
+
+static inline void starfive_sm4_write_nonce(struct starfive_cryp_ctx *ctx, u32 *nonce)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+
+ writel(nonce[0], cryp->base + STARFIVE_SM4_NONCE0);
+ writel(nonce[1], cryp->base + STARFIVE_SM4_NONCE1);
+ writel(nonce[2], cryp->base + STARFIVE_SM4_NONCE2);
+ writel(nonce[3], cryp->base + STARFIVE_SM4_NONCE3);
+}
+
+static int starfive_sm4_write_key(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ u32 *key = (u32 *)ctx->key;
+
+ writel(key[0], cryp->base + STARFIVE_SM4_KEY0);
+ writel(key[1], cryp->base + STARFIVE_SM4_KEY1);
+ writel(key[2], cryp->base + STARFIVE_SM4_KEY2);
+ writel(key[3], cryp->base + STARFIVE_SM4_KEY3);
+
+ if (starfive_sm4_wait_keydone(cryp))
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static int starfive_sm4_ccm_init(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ u8 iv[SM4_BLOCK_SIZE], b0[SM4_BLOCK_SIZE];
+ unsigned int textlen;
+
+ memcpy(iv, cryp->req.areq->iv, SM4_BLOCK_SIZE);
+ memset(iv + SM4_BLOCK_SIZE - 1 - iv[0], 0, iv[0] + 1);
+
+ /* Build B0 */
+ memcpy(b0, iv, SM4_BLOCK_SIZE);
+
+ b0[0] |= (8 * ((cryp->authsize - 2) / 2));
+
+ if (cryp->assoclen)
+ b0[0] |= CCM_B0_ADATA;
+
+ textlen = cryp->total_in;
+
+ b0[SM4_BLOCK_SIZE - 2] = textlen >> 8;
+ b0[SM4_BLOCK_SIZE - 1] = textlen & 0xFF;
+
+ starfive_sm4_write_nonce(ctx, (u32 *)b0);
+
+ return 0;
+}
+
+static int starfive_sm4_hw_init(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ u32 hw_mode;
+ int ret = 0;
+
+ /* reset */
+ rctx->csr.sm4.v = 0;
+ rctx->csr.sm4.sm4rst = 1;
+ writel(rctx->csr.sm4.v, cryp->base + STARFIVE_SM4_CSR);
+
+ /* csr setup */
+ hw_mode = cryp->flags & FLG_MODE_MASK;
+
+ rctx->csr.sm4.v = 0;
+ rctx->csr.sm4.mode = hw_mode;
+ rctx->csr.sm4.cmode = !is_encrypt(cryp);
+ rctx->csr.sm4.stmode = STARFIVE_SM4_MODE_XFB_1;
+
+ if (cryp->side_chan) {
+ rctx->csr.sm4.delay_sm4 = 1;
+ rctx->csr.sm4.vsm4_start = 1;
+ }
+
+ writel(rctx->csr.sm4.v, cryp->base + STARFIVE_SM4_CSR);
+
+ switch (hw_mode) {
+ case STARFIVE_SM4_MODE_GCM:
+ starfive_sm4_set_alen(ctx);
+ starfive_sm4_set_mlen(ctx);
+ writel(GCM_AES_IV_SIZE, cryp->base + STARFIVE_SM4_IVLEN);
+ ret = starfive_sm4_aead_write_key(ctx, hw_mode);
+ if (ret)
+ return ret;
+
+ starfive_sm4_write_iv(ctx, (void *)cryp->req.areq->iv);
+ break;
+ case STARFIVE_SM4_MODE_CCM:
+ starfive_sm4_set_alen(ctx);
+ starfive_sm4_set_mlen(ctx);
+ starfive_sm4_ccm_init(ctx);
+ ret = starfive_sm4_aead_write_key(ctx, hw_mode);
+ if (ret)
+ return ret;
+ break;
+ case STARFIVE_SM4_MODE_CBC:
+ case STARFIVE_SM4_MODE_CTR:
+ starfive_sm4_write_iv(ctx, (void *)cryp->req.sreq->iv);
+ ret = starfive_sm4_write_key(ctx);
+ if (ret)
+ return ret;
+ break;
+ case STARFIVE_SM4_MODE_ECB:
+ ret = starfive_sm4_write_key(ctx);
+ if (ret)
+ return ret;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int starfive_sm4_read_authtag(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+ int i;
+
+ if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_GCM) {
+ cryp->tag_out[0] = readl(cryp->base + STARFIVE_SM4_NONCE0);
+ cryp->tag_out[1] = readl(cryp->base + STARFIVE_SM4_NONCE1);
+ cryp->tag_out[2] = readl(cryp->base + STARFIVE_SM4_NONCE2);
+ cryp->tag_out[3] = readl(cryp->base + STARFIVE_SM4_NONCE3);
+ } else {
+ for (i = 0; i < SM4_BLOCK_32; i++)
+ cryp->tag_out[i] = readl(cryp->base + STARFIVE_SM4_SM4DIO0R);
+ }
+
+ if (is_encrypt(cryp)) {
+ scatterwalk_map_and_copy(cryp->tag_out, rctx->out_sg,
+ cryp->total_in, cryp->authsize, 1);
+ } else {
+ if (crypto_memneq(cryp->tag_in, cryp->tag_out, cryp->authsize))
+ return dev_err_probe(cryp->dev, -EBADMSG,
+ "Failed tag verification\n");
+ }
+
+ return 0;
+}
+
+static void starfive_sm4_finish_req(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ int err = 0;
+
+ if (cryp->authsize)
+ err = starfive_sm4_read_authtag(ctx);
+
+ if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CBC ||
+ (cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CTR)
+ starfive_sm4_get_iv(cryp, (void *)cryp->req.sreq->iv);
+
+ if (cryp->authsize)
+ crypto_finalize_aead_request(cryp->engine, cryp->req.areq, err);
+ else
+ crypto_finalize_skcipher_request(cryp->engine, cryp->req.sreq,
+ err);
+}
+
+static int starfive_sm4_gcm_write_adata(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+ u32 *buffer;
+ int total_len, loop;
+
+ total_len = ALIGN(cryp->assoclen, SM4_BLOCK_SIZE) / sizeof(unsigned int);
+ buffer = (u32 *)rctx->adata;
+
+ for (loop = 0; loop < total_len; loop += 4) {
+ writel(*buffer, cryp->base + STARFIVE_SM4_NONCE0);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_NONCE1);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_NONCE2);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_NONCE3);
+ buffer++;
+
+ if (starfive_sm4_wait_done(cryp))
+ return dev_err_probe(cryp->dev, -ETIMEDOUT,
+ "Timeout processing gcm aad block");
+ }
+
+ return 0;
+}
+
+static int starfive_sm4_ccm_write_adata(struct starfive_cryp_ctx *ctx)
+{
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+ u32 *buffer;
+ int total_len, loop;
+
+ buffer = (u32 *)rctx->adata;
+ total_len = ALIGN(cryp->assoclen + 2, SM4_BLOCK_SIZE) / sizeof(unsigned int);
+
+ for (loop = 0; loop < total_len; loop += 4) {
+ writel(*buffer, cryp->base + STARFIVE_SM4_SM4DIO0R);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_SM4DIO0R);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_SM4DIO0R);
+ buffer++;
+ writel(*buffer, cryp->base + STARFIVE_SM4_SM4DIO0R);
+ buffer++;
+
+ if (starfive_sm4_wait_done(cryp))
+ return dev_err_probe(cryp->dev, -ETIMEDOUT,
+ "Timeout processing ccm aad block");
+ }
+
+ return 0;
+}
+
+static void starfive_sm4_dma_done(void *param)
+{
+ struct starfive_cryp_dev *cryp = param;
+
+ complete(&cryp->dma_done);
+}
+
+static void starfive_sm4_dma_init(struct starfive_cryp_dev *cryp)
+{
+ cryp->cfg_in.direction = DMA_MEM_TO_DEV;
+ cryp->cfg_in.src_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
+ cryp->cfg_in.dst_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
+ cryp->cfg_in.src_maxburst = cryp->dma_maxburst;
+ cryp->cfg_in.dst_maxburst = cryp->dma_maxburst;
+ cryp->cfg_in.dst_addr = cryp->phys_base + STARFIVE_SM_ALG_FIFO_IN_OFFSET;
+
+ dmaengine_slave_config(cryp->tx, &cryp->cfg_in);
+
+ cryp->cfg_out.direction = DMA_DEV_TO_MEM;
+ cryp->cfg_out.src_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
+ cryp->cfg_out.dst_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
+ cryp->cfg_out.src_maxburst = cryp->dma_maxburst;
+ cryp->cfg_out.dst_maxburst = cryp->dma_maxburst;
+ cryp->cfg_out.src_addr = cryp->phys_base + STARFIVE_SM_ALG_FIFO_OUT_OFFSET;
+
+ dmaengine_slave_config(cryp->rx, &cryp->cfg_out);
+
+ init_completion(&cryp->dma_done);
+}
+
+static int starfive_sm4_dma_xfer(struct starfive_cryp_dev *cryp,
+ struct scatterlist *src,
+ struct scatterlist *dst,
+ int len)
+{
+ struct dma_async_tx_descriptor *in_desc, *out_desc;
+ union starfive_sm_alg_cr alg_cr;
+ int ret = 0, in_save, out_save;
+
+ alg_cr.v = 0;
+ alg_cr.start = 1;
+ alg_cr.sm4_dma_en = 1;
+ writel(alg_cr.v, cryp->base + STARFIVE_SM_ALG_CR_OFFSET);
+
+ in_save = sg_dma_len(src);
+ out_save = sg_dma_len(dst);
+
+ writel(ALIGN(len, SM4_BLOCK_SIZE), cryp->base + STARFIVE_SM_DMA_IN_LEN_OFFSET);
+ writel(ALIGN(len, SM4_BLOCK_SIZE), cryp->base + STARFIVE_SM_DMA_OUT_LEN_OFFSET);
+
+ sg_dma_len(src) = ALIGN(len, SM4_BLOCK_SIZE);
+ sg_dma_len(dst) = ALIGN(len, SM4_BLOCK_SIZE);
+
+ out_desc = dmaengine_prep_slave_sg(cryp->rx, dst, 1, DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!out_desc) {
+ ret = -EINVAL;
+ goto dma_err;
+ }
+
+ out_desc->callback = starfive_sm4_dma_done;
+ out_desc->callback_param = cryp;
+
+ reinit_completion(&cryp->dma_done);
+ dmaengine_submit(out_desc);
+ dma_async_issue_pending(cryp->rx);
+
+ in_desc = dmaengine_prep_slave_sg(cryp->tx, src, 1, DMA_MEM_TO_DEV,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!in_desc) {
+ ret = -EINVAL;
+ goto dma_err;
+ }
+
+ dmaengine_submit(in_desc);
+ dma_async_issue_pending(cryp->tx);
+
+ if (!wait_for_completion_timeout(&cryp->dma_done,
+ msecs_to_jiffies(1000)))
+ ret = -ETIMEDOUT;
+
+dma_err:
+ sg_dma_len(src) = in_save;
+ sg_dma_len(dst) = out_save;
+
+ alg_cr.v = 0;
+ alg_cr.clear = 1;
+ writel(alg_cr.v, cryp->base + STARFIVE_SM_ALG_CR_OFFSET);
+
+ return ret;
+}
+
+static int starfive_sm4_map_sg(struct starfive_cryp_dev *cryp,
+ struct scatterlist *src,
+ struct scatterlist *dst)
+{
+ struct scatterlist *stsg, *dtsg;
+ struct scatterlist _src[2], _dst[2];
+ unsigned int remain = cryp->total_in;
+ unsigned int len, src_nents, dst_nents;
+ int ret;
+
+ if (src == dst) {
+ for (stsg = src, dtsg = dst; remain > 0;
+ stsg = sg_next(stsg), dtsg = sg_next(dtsg)) {
+ src_nents = dma_map_sg(cryp->dev, stsg, 1, DMA_BIDIRECTIONAL);
+ if (src_nents == 0)
+ return dev_err_probe(cryp->dev, -ENOMEM,
+ "dma_map_sg error\n");
+
+ dst_nents = src_nents;
+
+ len = min(sg_dma_len(stsg), remain);
+
+ ret = starfive_sm4_dma_xfer(cryp, stsg, dtsg, len);
+ dma_unmap_sg(cryp->dev, stsg, 1, DMA_BIDIRECTIONAL);
+ if (ret)
+ return ret;
+
+ remain -= len;
+ }
+ } else {
+ for (stsg = src, dtsg = dst;;) {
+ src_nents = dma_map_sg(cryp->dev, stsg, 1, DMA_TO_DEVICE);
+ if (src_nents == 0)
+ return dev_err_probe(cryp->dev, -ENOMEM,
+ "dma_map_sg src error\n");
+
+ dst_nents = dma_map_sg(cryp->dev, dtsg, 1, DMA_FROM_DEVICE);
+ if (dst_nents == 0)
+ return dev_err_probe(cryp->dev, -ENOMEM,
+ "dma_map_sg dst error\n");
+
+ len = min(sg_dma_len(stsg), sg_dma_len(dtsg));
+ len = min(len, remain);
+
+ ret = starfive_sm4_dma_xfer(cryp, stsg, dtsg, len);
+ dma_unmap_sg(cryp->dev, stsg, 1, DMA_TO_DEVICE);
+ dma_unmap_sg(cryp->dev, dtsg, 1, DMA_FROM_DEVICE);
+ if (ret)
+ return ret;
+
+ remain -= len;
+ if (remain == 0)
+ break;
+
+ if (sg_dma_len(stsg) - len) {
+ stsg = scatterwalk_ffwd(_src, stsg, len);
+ dtsg = sg_next(dtsg);
+ } else if (sg_dma_len(dtsg) - len) {
+ dtsg = scatterwalk_ffwd(_dst, dtsg, len);
+ stsg = sg_next(stsg);
+ } else {
+ stsg = sg_next(stsg);
+ dtsg = sg_next(dtsg);
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int starfive_sm4_do_one_req(struct crypto_engine *engine, void *areq)
+{
+ struct skcipher_request *req =
+ container_of(areq, struct skcipher_request, base);
+ struct starfive_cryp_ctx *ctx =
+ crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct starfive_cryp_request_ctx *rctx = skcipher_request_ctx(req);
+ int ret;
+
+ cryp->req.sreq = req;
+ cryp->total_in = req->cryptlen;
+ cryp->total_out = req->cryptlen;
+ cryp->assoclen = 0;
+ cryp->authsize = 0;
+
+ rctx->in_sg = req->src;
+ rctx->out_sg = req->dst;
+
+ ctx->rctx = rctx;
+
+ ret = starfive_sm4_hw_init(ctx);
+ if (ret)
+ return ret;
+
+ starfive_sm4_dma_init(cryp);
+
+ ret = starfive_sm4_map_sg(cryp, rctx->in_sg, rctx->out_sg);
+ if (ret)
+ return ret;
+
+ starfive_sm4_finish_req(ctx);
+
+ return 0;
+}
+
+static int starfive_sm4_init_tfm(struct crypto_skcipher *tfm,
+ const char *alg_name)
+{
+ struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ ctx->cryp = starfive_cryp_find_dev(ctx);
+ if (!ctx->cryp)
+ return -ENODEV;
+
+ ctx->skcipher_fbk = crypto_alloc_skcipher(alg_name, 0,
+ CRYPTO_ALG_NEED_FALLBACK);
+ if (IS_ERR(ctx->skcipher_fbk))
+ return dev_err_probe(ctx->cryp->dev, PTR_ERR(ctx->skcipher_fbk),
+ "%s() failed to allocate fallback for %s\n",
+ __func__, alg_name);
+
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct starfive_cryp_request_ctx) +
+ sizeof(struct skcipher_request));
+
+ return 0;
+}
+
+static void starfive_sm4_exit_tfm(struct crypto_skcipher *tfm)
+{
+ struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ crypto_free_skcipher(ctx->skcipher_fbk);
+}
+
+static int starfive_sm4_aead_do_one_req(struct crypto_engine *engine, void *areq)
+{
+ struct aead_request *req =
+ container_of(areq, struct aead_request, base);
+ struct starfive_cryp_ctx *ctx =
+ crypto_aead_ctx(crypto_aead_reqtfm(req));
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct starfive_cryp_request_ctx *rctx = aead_request_ctx(req);
+ struct scatterlist _dst[2], _src[2];
+ int ret;
+
+ cryp->req.areq = req;
+ cryp->assoclen = req->assoclen;
+ cryp->authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
+
+ if (is_encrypt(cryp)) {
+ cryp->total_in = req->cryptlen;
+ cryp->total_out = req->cryptlen;
+ } else {
+ cryp->total_in = req->cryptlen - cryp->authsize;
+ cryp->total_out = cryp->total_in;
+ scatterwalk_map_and_copy(cryp->tag_in, req->src,
+ cryp->total_in + cryp->assoclen,
+ cryp->authsize, 0);
+ }
+
+ if (cryp->assoclen) {
+ if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CCM) {
+ rctx->adata = kzalloc(cryp->assoclen + 2 + SM4_BLOCK_SIZE, GFP_KERNEL);
+ if (!rctx->adata)
+ return -ENOMEM;
+
+ /* Append 2 bytes zeroes at the start of ccm aad */
+ rctx->adata[0] = 0;
+ rctx->adata[1] = 0;
+
+ sg_copy_to_buffer(req->src,
+ sg_nents_for_len(req->src, cryp->assoclen),
+ &rctx->adata[2], cryp->assoclen);
+ } else {
+ rctx->adata = kzalloc(cryp->assoclen + SM4_BLOCK_SIZE, GFP_KERNEL);
+ if (!rctx->adata)
+ return dev_err_probe(cryp->dev, -ENOMEM,
+ "Failed to alloc memory for adata");
+
+ sg_copy_to_buffer(req->src,
+ sg_nents_for_len(req->src, cryp->assoclen),
+ rctx->adata, cryp->assoclen);
+ }
+ }
+
+ rctx->in_sg = scatterwalk_ffwd(_src, req->src, cryp->assoclen);
+ if (req->src == req->dst)
+ rctx->out_sg = rctx->in_sg;
+ else
+ rctx->out_sg = scatterwalk_ffwd(_dst, req->dst, cryp->assoclen);
+
+ if (cryp->total_in)
+ sg_zero_buffer(rctx->in_sg, sg_nents(rctx->in_sg),
+ sg_dma_len(rctx->in_sg) - cryp->total_in,
+ cryp->total_in);
+
+ ctx->rctx = rctx;
+
+ ret = starfive_sm4_hw_init(ctx);
+ if (ret)
+ return ret;
+
+ if (!cryp->assoclen)
+ goto write_text;
+
+ if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CCM)
+ ret = starfive_sm4_ccm_write_adata(ctx);
+ else
+ ret = starfive_sm4_gcm_write_adata(ctx);
+
+ kfree(rctx->adata);
+
+ if (ret)
+ return ret;
+
+write_text:
+ if (!cryp->total_in)
+ goto finish_req;
+
+ starfive_sm4_dma_init(cryp);
+
+ ret = starfive_sm4_map_sg(cryp, rctx->in_sg, rctx->out_sg);
+ if (ret)
+ return ret;
+
+finish_req:
+ starfive_sm4_finish_req(ctx);
+ return 0;
+}
+
+static int starfive_sm4_aead_init_tfm(struct crypto_aead *tfm,
+ const char *alg_name)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+ ctx->cryp = starfive_cryp_find_dev(ctx);
+ if (!ctx->cryp)
+ return -ENODEV;
+
+ ctx->aead_fbk = crypto_alloc_aead(alg_name, 0,
+ CRYPTO_ALG_NEED_FALLBACK);
+ if (IS_ERR(ctx->aead_fbk))
+ return dev_err_probe(ctx->cryp->dev, PTR_ERR(ctx->aead_fbk),
+ "%s() failed to allocate fallback for %s\n",
+ __func__, alg_name);
+
+ crypto_aead_set_reqsize(tfm, sizeof(struct starfive_cryp_ctx) +
+ sizeof(struct aead_request));
+
+ return 0;
+}
+
+static void starfive_sm4_aead_exit_tfm(struct crypto_aead *tfm)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+ crypto_free_aead(ctx->aead_fbk);
+}
+
+static bool starfive_sm4_check_unaligned(struct starfive_cryp_dev *cryp,
+ struct scatterlist *src,
+ struct scatterlist *dst)
+{
+ struct scatterlist *tsg;
+ int i;
+
+ for_each_sg(src, tsg, sg_nents(src), i)
+ if (!IS_ALIGNED(tsg->length, SM4_BLOCK_SIZE) &&
+ !sg_is_last(tsg))
+ return true;
+
+ if (src != dst)
+ for_each_sg(dst, tsg, sg_nents(dst), i)
+ if (!IS_ALIGNED(tsg->length, SM4_BLOCK_SIZE) &&
+ !sg_is_last(tsg))
+ return true;
+
+ return false;
+}
+
+static int starfive_sm4_do_fallback(struct skcipher_request *req, bool enc)
+{
+ struct starfive_cryp_ctx *ctx =
+ crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
+ struct skcipher_request *subreq = skcipher_request_ctx(req);
+
+ skcipher_request_set_tfm(subreq, ctx->skcipher_fbk);
+ skcipher_request_set_callback(subreq, req->base.flags,
+ req->base.complete,
+ req->base.data);
+ skcipher_request_set_crypt(subreq, req->src, req->dst,
+ req->cryptlen, req->iv);
+
+ return enc ? crypto_skcipher_encrypt(subreq) :
+ crypto_skcipher_decrypt(subreq);
+}
+
+static int starfive_sm4_crypt(struct skcipher_request *req, unsigned long flags)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ unsigned int blocksize_align = crypto_skcipher_blocksize(tfm) - 1;
+
+ cryp->flags = flags;
+
+ if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_ECB ||
+ (cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CBC)
+ if (req->cryptlen & blocksize_align)
+ return -EINVAL;
+
+ if (starfive_sm4_check_unaligned(cryp, req->src, req->dst))
+ return starfive_sm4_do_fallback(req, is_encrypt(cryp));
+
+ return crypto_transfer_skcipher_request_to_engine(cryp->engine, req);
+}
+
+static int starfive_sm4_aead_do_fallback(struct aead_request *req, bool enc)
+{
+ struct starfive_cryp_ctx *ctx =
+ crypto_aead_ctx(crypto_aead_reqtfm(req));
+ struct aead_request *subreq = aead_request_ctx(req);
+
+ aead_request_set_tfm(subreq, ctx->aead_fbk);
+ aead_request_set_callback(subreq, req->base.flags,
+ req->base.complete,
+ req->base.data);
+ aead_request_set_crypt(subreq, req->src, req->dst,
+ req->cryptlen, req->iv);
+ aead_request_set_ad(subreq, req->assoclen);
+
+ return enc ? crypto_aead_encrypt(subreq) :
+ crypto_aead_decrypt(subreq);
+}
+
+static int starfive_sm4_aead_crypt(struct aead_request *req, unsigned long flags)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
+ struct starfive_cryp_dev *cryp = ctx->cryp;
+ struct scatterlist *src, *dst, _src[2], _dst[2];
+
+ cryp->flags = flags;
+
+ /* sm4-ccm does not support tag verification for non-aligned text,
+ * use fallback for ccm decryption instead.
+ */
+ if (((cryp->flags & FLG_MODE_MASK) == STARFIVE_SM4_MODE_CCM) &&
+ !is_encrypt(cryp))
+ return starfive_sm4_aead_do_fallback(req, 0);
+
+ src = scatterwalk_ffwd(_src, req->src, req->assoclen);
+
+ if (req->src == req->dst)
+ dst = src;
+ else
+ dst = scatterwalk_ffwd(_dst, req->dst, req->assoclen);
+
+ if (starfive_sm4_check_unaligned(cryp, src, dst))
+ return starfive_sm4_aead_do_fallback(req, is_encrypt(cryp));
+
+ return crypto_transfer_aead_request_to_engine(cryp->engine, req);
+}
+
+static int starfive_sm4_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ if (!key || !keylen)
+ return -EINVAL;
+
+ if (keylen != SM4_KEY_SIZE)
+ return -EINVAL;
+
+ memcpy(ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+ return crypto_skcipher_setkey(ctx->skcipher_fbk, key, keylen);
+}
+
+static int starfive_sm4_aead_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+ if (!key || !keylen)
+ return -EINVAL;
+
+ if (keylen != SM4_KEY_SIZE)
+ return -EINVAL;
+
+ memcpy(ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+ return crypto_aead_setkey(ctx->aead_fbk, key, keylen);
+}
+
+static int starfive_sm4_gcm_setauthsize(struct crypto_aead *tfm,
+ unsigned int authsize)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+ int ret;
+
+ ret = crypto_gcm_check_authsize(authsize);
+ if (ret)
+ return ret;
+
+ return crypto_aead_setauthsize(ctx->aead_fbk, authsize);
+}
+
+static int starfive_sm4_ccm_setauthsize(struct crypto_aead *tfm,
+ unsigned int authsize)
+{
+ struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+ switch (authsize) {
+ case 4:
+ case 6:
+ case 8:
+ case 10:
+ case 12:
+ case 14:
+ case 16:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return crypto_aead_setauthsize(ctx->aead_fbk, authsize);
+}
+
+static int starfive_sm4_ecb_encrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_ECB | FLG_ENCRYPT);
+}
+
+static int starfive_sm4_ecb_decrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_ECB);
+}
+
+static int starfive_sm4_cbc_encrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_CBC | FLG_ENCRYPT);
+}
+
+static int starfive_sm4_cbc_decrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_CBC);
+}
+
+static int starfive_sm4_ctr_encrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_CTR | FLG_ENCRYPT);
+}
+
+static int starfive_sm4_ctr_decrypt(struct skcipher_request *req)
+{
+ return starfive_sm4_crypt(req, STARFIVE_SM4_MODE_CTR);
+}
+
+static int starfive_sm4_gcm_encrypt(struct aead_request *req)
+{
+ return starfive_sm4_aead_crypt(req, STARFIVE_SM4_MODE_GCM | FLG_ENCRYPT);
+}
+
+static int starfive_sm4_gcm_decrypt(struct aead_request *req)
+{
+ return starfive_sm4_aead_crypt(req, STARFIVE_SM4_MODE_GCM);
+}
+
+static int starfive_sm4_ccm_encrypt(struct aead_request *req)
+{
+ int ret;
+
+ ret = starfive_sm4_ccm_check_iv(req->iv);
+ if (ret)
+ return ret;
+
+ return starfive_sm4_aead_crypt(req, STARFIVE_SM4_MODE_CCM | FLG_ENCRYPT);
+}
+
+static int starfive_sm4_ccm_decrypt(struct aead_request *req)
+{
+ int ret;
+
+ ret = starfive_sm4_ccm_check_iv(req->iv);
+ if (ret)
+ return ret;
+
+ return starfive_sm4_aead_crypt(req, STARFIVE_SM4_MODE_CCM);
+}
+
+static int starfive_sm4_ecb_init_tfm(struct crypto_skcipher *tfm)
+{
+ return starfive_sm4_init_tfm(tfm, "ecb(sm4-generic)");
+}
+
+static int starfive_sm4_cbc_init_tfm(struct crypto_skcipher *tfm)
+{
+ return starfive_sm4_init_tfm(tfm, "cbc(sm4-generic)");
+}
+
+static int starfive_sm4_ctr_init_tfm(struct crypto_skcipher *tfm)
+{
+ return starfive_sm4_init_tfm(tfm, "ctr(sm4-generic)");
+}
+
+static int starfive_sm4_ccm_aead_init_tfm(struct crypto_aead *tfm)
+{
+ return starfive_sm4_aead_init_tfm(tfm, "ccm_base(ctr(sm4-generic),cbcmac(sm4-generic))");
+}
+
+static int starfive_sm4_gcm_aead_init_tfm(struct crypto_aead *tfm)
+{
+ return starfive_sm4_aead_init_tfm(tfm, "gcm_base(ctr(sm4-generic),ghash-generic)");
+}
+
+static struct skcipher_engine_alg skcipher_sm4[] = {
+{
+ .base.init = starfive_sm4_ecb_init_tfm,
+ .base.exit = starfive_sm4_exit_tfm,
+ .base.setkey = starfive_sm4_setkey,
+ .base.encrypt = starfive_sm4_ecb_encrypt,
+ .base.decrypt = starfive_sm4_ecb_decrypt,
+ .base.min_keysize = SM4_KEY_SIZE,
+ .base.max_keysize = SM4_KEY_SIZE,
+ .base.base = {
+ .cra_name = "ecb(sm4)",
+ .cra_driver_name = "starfive-ecb-sm4",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SM4_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct starfive_cryp_ctx),
+ .cra_alignmask = 0xf,
+ .cra_module = THIS_MODULE,
+ },
+ .op = {
+ .do_one_request = starfive_sm4_do_one_req,
+ },
+}, {
+ .base.init = starfive_sm4_ctr_init_tfm,
+ .base.exit = starfive_sm4_exit_tfm,
+ .base.setkey = starfive_sm4_setkey,
+ .base.encrypt = starfive_sm4_ctr_encrypt,
+ .base.decrypt = starfive_sm4_ctr_decrypt,
+ .base.min_keysize = SM4_KEY_SIZE,
+ .base.max_keysize = SM4_KEY_SIZE,
+ .base.ivsize = SM4_BLOCK_SIZE,
+ .base.base = {
+ .cra_name = "ctr(sm4)",
+ .cra_driver_name = "starfive-ctr-sm4",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct starfive_cryp_ctx),
+ .cra_alignmask = 0xf,
+ .cra_module = THIS_MODULE,
+ },
+ .op = {
+ .do_one_request = starfive_sm4_do_one_req,
+ },
+}, {
+ .base.init = starfive_sm4_cbc_init_tfm,
+ .base.exit = starfive_sm4_exit_tfm,
+ .base.setkey = starfive_sm4_setkey,
+ .base.encrypt = starfive_sm4_cbc_encrypt,
+ .base.decrypt = starfive_sm4_cbc_decrypt,
+ .base.min_keysize = SM4_KEY_SIZE,
+ .base.max_keysize = SM4_KEY_SIZE,
+ .base.ivsize = SM4_BLOCK_SIZE,
+ .base.base = {
+ .cra_name = "cbc(sm4)",
+ .cra_driver_name = "starfive-cbc-sm4",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SM4_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct starfive_cryp_ctx),
+ .cra_alignmask = 0xf,
+ .cra_module = THIS_MODULE,
+ },
+ .op = {
+ .do_one_request = starfive_sm4_do_one_req,
+ },
+},
+};
+
+static struct aead_engine_alg aead_sm4[] = {
+{
+ .base.setkey = starfive_sm4_aead_setkey,
+ .base.setauthsize = starfive_sm4_gcm_setauthsize,
+ .base.encrypt = starfive_sm4_gcm_encrypt,
+ .base.decrypt = starfive_sm4_gcm_decrypt,
+ .base.init = starfive_sm4_gcm_aead_init_tfm,
+ .base.exit = starfive_sm4_aead_exit_tfm,
+ .base.ivsize = GCM_AES_IV_SIZE,
+ .base.maxauthsize = SM4_BLOCK_SIZE,
+ .base.base = {
+ .cra_name = "gcm(sm4)",
+ .cra_driver_name = "starfive-gcm-sm4",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct starfive_cryp_ctx),
+ .cra_alignmask = 0xf,
+ .cra_module = THIS_MODULE,
+ },
+ .op = {
+ .do_one_request = starfive_sm4_aead_do_one_req,
+ },
+}, {
+ .base.setkey = starfive_sm4_aead_setkey,
+ .base.setauthsize = starfive_sm4_ccm_setauthsize,
+ .base.encrypt = starfive_sm4_ccm_encrypt,
+ .base.decrypt = starfive_sm4_ccm_decrypt,
+ .base.init = starfive_sm4_ccm_aead_init_tfm,
+ .base.exit = starfive_sm4_aead_exit_tfm,
+ .base.ivsize = SM4_BLOCK_SIZE,
+ .base.maxauthsize = SM4_BLOCK_SIZE,
+ .base.base = {
+ .cra_name = "ccm(sm4)",
+ .cra_driver_name = "starfive-ccm-sm4",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct starfive_cryp_ctx),
+ .cra_alignmask = 0xf,
+ .cra_module = THIS_MODULE,
+ },
+ .op = {
+ .do_one_request = starfive_sm4_aead_do_one_req,
+ },
+},
+};
+
+int starfive_sm4_register_algs(void)
+{
+ int ret;
+
+ ret = crypto_engine_register_skciphers(skcipher_sm4, ARRAY_SIZE(skcipher_sm4));
+ if (ret)
+ return ret;
+
+ ret = crypto_engine_register_aeads(aead_sm4, ARRAY_SIZE(aead_sm4));
+ if (ret)
+ crypto_engine_unregister_skciphers(skcipher_sm4, ARRAY_SIZE(skcipher_sm4));
+
+ return ret;
+}
+
+void starfive_sm4_unregister_algs(void)
+{
+ crypto_engine_unregister_aeads(aead_sm4, ARRAY_SIZE(aead_sm4));
+ crypto_engine_unregister_skciphers(skcipher_sm4, ARRAY_SIZE(skcipher_sm4));
+}
--
2.34.1