[PATCH 2/7] crypto: stm32 - add new algorithms support

From: Thomas BOURGOIN
Date: Thu Jul 06 2023 - 03:38:37 EST

From: Thomas Bourgoin <thomas.bourgoin@xxxxxxxxxxx>

Add the all SHA-2 (up to 512) and SHA-3 algorithm support.
Update compatible table to add stm32mp13.

Signed-off-by: Thomas Bourgoin <thomas.bourgoin@xxxxxxxxxxx>
---
drivers/crypto/stm32/Kconfig | 2 +
drivers/crypto/stm32/stm32-hash.c | 666 ++++++++++++++++++++++++------
2 files changed, 543 insertions(+), 125 deletions(-)

diff --git a/drivers/crypto/stm32/Kconfig b/drivers/crypto/stm32/Kconfig
index 4fc581e9e595..49dfd161e9b9 100644
--- a/drivers/crypto/stm32/Kconfig
+++ b/drivers/crypto/stm32/Kconfig
@@ -16,6 +16,8 @@ config CRYPTO_DEV_STM32_HASH
select CRYPTO_MD5
select CRYPTO_SHA1
select CRYPTO_SHA256
+ select CRYPTO_SHA512
+ select CRYPTO_SHA3
select CRYPTO_ENGINE
help
This enables support for the HASH hw accelerator which can be found
diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index f0df32382719..ded718196ac9 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -26,6 +26,7 @@
#include <crypto/scatterwalk.h>
#include <crypto/sha1.h>
#include <crypto/sha2.h>
+#include <crypto/sha3.h>
#include <crypto/internal/hash.h>

#define HASH_CR 0x00
@@ -45,19 +46,11 @@
#define HASH_CR_DMAE BIT(3)
#define HASH_CR_DATATYPE_POS 4
#define HASH_CR_MODE BIT(6)
+#define HASH_CR_ALGO_POS 7
#define HASH_CR_MDMAT BIT(13)
#define HASH_CR_DMAA BIT(14)
#define HASH_CR_LKEY BIT(16)

-#define HASH_CR_ALGO_SHA1 0x0
-#define HASH_CR_ALGO_MD5 0x80
-#define HASH_CR_ALGO_SHA224 0x40000
-#define HASH_CR_ALGO_SHA256 0x40080
-
-#define HASH_CR_UX500_EMPTYMSG BIT(20)
-#define HASH_CR_UX500_ALGO_SHA1 BIT(7)
-#define HASH_CR_UX500_ALGO_SHA256 0x0
-
/* Interrupt */
#define HASH_DINIE BIT(0)
#define HASH_DCIE BIT(1)
@@ -66,9 +59,6 @@
#define HASH_MASK_CALC_COMPLETION BIT(0)
#define HASH_MASK_DATA_INPUT BIT(1)

-/* Context swap register */
-#define HASH_CSR_REGISTER_NUMBER 54
-
/* Status Flags */
#define HASH_SR_DATA_INPUT_READY BIT(0)
#define HASH_SR_OUTPUT_READY BIT(1)
@@ -79,6 +69,18 @@
#define HASH_STR_NBLW_MASK GENMASK(4, 0)
#define HASH_STR_DCAL BIT(8)

+/* HWCFGR Register */
+#define HASH_HWCFG_DMA_MASK GENMASK(3, 0)
+
+/* Context swap register */
+#define HASH_CSR_NB_SHA256_HMAC 54
+#define HASH_CSR_NB_SHA256 22
+#define HASH_CSR_NB_SHA512_HMAC 103
+#define HASH_CSR_NB_SHA512 91
+#define HASH_CSR_NB_SHA3_HMAC 88
+#define HASH_CSR_NB_SHA3 72
+#define HASH_CSR_NB_MAX HASH_CSR_NB_SHA512_HMAC
+
#define HASH_FLAGS_INIT BIT(0)
#define HASH_FLAGS_OUTPUT_READY BIT(1)
#define HASH_FLAGS_CPU BIT(2)
@@ -87,20 +89,20 @@
#define HASH_FLAGS_HMAC_INIT BIT(5)
#define HASH_FLAGS_HMAC_FINAL BIT(6)
#define HASH_FLAGS_HMAC_KEY BIT(7)
-
+#define HASH_FLAGS_SHA3_MODE BIT(8)
#define HASH_FLAGS_FINAL BIT(15)
#define HASH_FLAGS_FINUP BIT(16)
-#define HASH_FLAGS_ALGO_MASK GENMASK(21, 18)
-#define HASH_FLAGS_MD5 BIT(18)
-#define HASH_FLAGS_SHA1 BIT(19)
-#define HASH_FLAGS_SHA224 BIT(20)
-#define HASH_FLAGS_SHA256 BIT(21)
+#define HASH_FLAGS_ALGO_MASK GENMASK(20, 17)
+#define HASH_FLAGS_ALGO_SHIFT 17
+#define HASH_FLAGS_ERRORS BIT(21)
#define HASH_FLAGS_EMPTY BIT(22)
#define HASH_FLAGS_HMAC BIT(23)

#define HASH_OP_UPDATE 1
#define HASH_OP_FINAL 2

+#define HASH_BURST_LEVEL 4
+
enum stm32_hash_data_format {
HASH_DATA_32_BITS = 0x0,
HASH_DATA_16_BITS = 0x1,
@@ -108,11 +110,26 @@ enum stm32_hash_data_format {
HASH_DATA_1_BIT = 0x3
};

-#define HASH_BUFLEN 256
-#define HASH_LONG_KEY 64
-#define HASH_MAX_KEY_SIZE (SHA256_BLOCK_SIZE * 8)
-#define HASH_QUEUE_LENGTH 16
-#define HASH_DMA_THRESHOLD 50
+#define HASH_BUFLEN (SHA3_224_BLOCK_SIZE + 4)
+#define HASH_MAX_KEY_SIZE (SHA512_BLOCK_SIZE * 8)
+
+enum stm32_hash_algo {
+ HASH_SHA1 = 0,
+ HASH_MD5 = 1,
+ HASH_SHA224 = 2,
+ HASH_SHA256 = 3,
+ HASH_SHA3_224 = 4,
+ HASH_SHA3_256 = 5,
+ HASH_SHA3_384 = 6,
+ HASH_SHA3_512 = 7,
+ HASH_SHA384 = 12,
+ HASH_SHA512 = 15,
+};
+
+enum ux500_hash_algo {
+ HASH_SHA256_UX500 = 0,
+ HASH_SHA1_UX500 = 1,
+};

#define HASH_AUTOSUSPEND_DELAY 50

@@ -130,19 +147,19 @@ struct stm32_hash_state {
u32 flags;

u16 bufcnt;
- u16 buflen;
+ u16 blocklen;

u8 buffer[HASH_BUFLEN] __aligned(4);

/* hash state */
- u32 hw_context[3 + HASH_CSR_REGISTER_NUMBER];
+ u32 hw_context[3 + HASH_CSR_NB_MAX];
};

struct stm32_hash_request_ctx {
struct stm32_hash_dev *hdev;
unsigned long op;

- u8 digest[SHA256_DIGEST_SIZE] __aligned(sizeof(u32));
+ u8 digest[SHA512_DIGEST_SIZE] __aligned(sizeof(u32));
size_t digcnt;

/* DMA */
@@ -166,12 +183,13 @@ struct stm32_hash_algs_info {
};

struct stm32_hash_pdata {
- struct stm32_hash_algs_info *algs_info;
- size_t algs_info_size;
- bool has_sr;
- bool has_mdmat;
- bool broken_emptymsg;
- bool ux500;
+ const int alg_shift;
+ const struct stm32_hash_algs_info *algs_info;
+ size_t algs_info_size;
+ bool has_sr;
+ bool has_mdmat;
+ bool broken_emptymsg;
+ bool ux500;
};

struct stm32_hash_dev {
@@ -182,7 +200,6 @@ struct stm32_hash_dev {
void __iomem *io_base;
phys_addr_t phys_base;
u32 dma_mode;
- u32 dma_maxburst;
bool polled;

struct ahash_request *req;
@@ -275,31 +292,19 @@ static void stm32_hash_write_ctrl(struct stm32_hash_dev *hdev, int bufcnt)
struct crypto_ahash *tfm = crypto_ahash_reqtfm(hdev->req);
struct stm32_hash_ctx *ctx = crypto_ahash_ctx(tfm);
struct stm32_hash_state *state = &rctx->state;
+ u32 alg = (state->flags & HASH_FLAGS_ALGO_MASK) >> HASH_FLAGS_ALGO_SHIFT;

u32 reg = HASH_CR_INIT;

if (!(hdev->flags & HASH_FLAGS_INIT)) {
- switch (state->flags & HASH_FLAGS_ALGO_MASK) {
- case HASH_FLAGS_MD5:
- reg |= HASH_CR_ALGO_MD5;
- break;
- case HASH_FLAGS_SHA1:
- if (hdev->pdata->ux500)
- reg |= HASH_CR_UX500_ALGO_SHA1;
- else
- reg |= HASH_CR_ALGO_SHA1;
- break;
- case HASH_FLAGS_SHA224:
- reg |= HASH_CR_ALGO_SHA224;
- break;
- case HASH_FLAGS_SHA256:
- if (hdev->pdata->ux500)
- reg |= HASH_CR_UX500_ALGO_SHA256;
+ if (hdev->pdata->ux500) {
+ reg |= ((alg & BIT(0)) << HASH_CR_ALGO_POS);
+ } else {
+ if (hdev->pdata->alg_shift == HASH_CR_ALGO_POS)
+ reg |= ((alg & BIT(1)) << 17) |
+ ((alg & BIT(0)) << HASH_CR_ALGO_POS);
else
- reg |= HASH_CR_ALGO_SHA256;
- break;
- default:
- reg |= HASH_CR_ALGO_MD5;
+ reg |= alg << hdev->pdata->alg_shift;
}

reg |= (rctx->data_type << HASH_CR_DATATYPE_POS);
@@ -307,7 +312,7 @@ static void stm32_hash_write_ctrl(struct stm32_hash_dev *hdev, int bufcnt)
if (state->flags & HASH_FLAGS_HMAC) {
hdev->flags |= HASH_FLAGS_HMAC;
reg |= HASH_CR_MODE;
- if (ctx->keylen > HASH_LONG_KEY)
+ if (ctx->keylen > crypto_ahash_blocksize(tfm))
reg |= HASH_CR_LKEY;
}

@@ -318,6 +323,12 @@ static void stm32_hash_write_ctrl(struct stm32_hash_dev *hdev, int bufcnt)

hdev->flags |= HASH_FLAGS_INIT;

+ /*
+ * After first block + 1 words are fill up,
+ * we only need to fill 1 block to start partial computation
+ */
+ rctx->state.blocklen -= sizeof(u32);
+
dev_dbg(hdev->dev, "Write Control %x\n", reg);
}
}
@@ -327,9 +338,9 @@ static void stm32_hash_append_sg(struct stm32_hash_request_ctx *rctx)
struct stm32_hash_state *state = &rctx->state;
size_t count;

- while ((state->bufcnt < state->buflen) && rctx->total) {
+ while ((state->bufcnt < state->blocklen) && rctx->total) {
count = min(rctx->sg->length - rctx->offset, rctx->total);
- count = min_t(size_t, count, state->buflen - state->bufcnt);
+ count = min_t(size_t, count, state->blocklen - state->bufcnt);

if (count <= 0) {
if ((rctx->sg->length == 0) && !sg_is_last(rctx->sg)) {
@@ -419,20 +430,59 @@ static int stm32_hash_xmit_cpu(struct stm32_hash_dev *hdev,
return 0;
}

+static int hash_swap_reg(struct stm32_hash_request_ctx *rctx)
+{
+ struct stm32_hash_state *state = &rctx->state;
+
+ switch ((state->flags & HASH_FLAGS_ALGO_MASK) >>
+ HASH_FLAGS_ALGO_SHIFT) {
+ case HASH_MD5:
+ case HASH_SHA1:
+ case HASH_SHA224:
+ case HASH_SHA256:
+ if (state->flags & HASH_FLAGS_HMAC)
+ return HASH_CSR_NB_SHA256_HMAC;
+ else
+ return HASH_CSR_NB_SHA256;
+ break;
+
+ case HASH_SHA384:
+ case HASH_SHA512:
+ if (state->flags & HASH_FLAGS_HMAC)
+ return HASH_CSR_NB_SHA512_HMAC;
+ else
+ return HASH_CSR_NB_SHA512;
+ break;
+
+ case HASH_SHA3_224:
+ case HASH_SHA3_256:
+ case HASH_SHA3_384:
+ case HASH_SHA3_512:
+ if (state->flags & HASH_FLAGS_HMAC)
+ return HASH_CSR_NB_SHA3_HMAC;
+ else
+ return HASH_CSR_NB_SHA3;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int stm32_hash_update_cpu(struct stm32_hash_dev *hdev)
{
struct stm32_hash_request_ctx *rctx = ahash_request_ctx(hdev->req);
struct stm32_hash_state *state = &rctx->state;
u32 *preg = state->hw_context;
int bufcnt, err = 0, final;
- int i;
+ int i, swap_reg;

dev_dbg(hdev->dev, "%s flags %x\n", __func__, state->flags);

final = state->flags & HASH_FLAGS_FINAL;

- while ((rctx->total >= state->buflen) ||
- (state->bufcnt + rctx->total >= state->buflen)) {
+ while ((rctx->total >= state->blocklen) ||
+ (state->bufcnt + rctx->total >= state->blocklen)) {
stm32_hash_append_sg(rctx);
bufcnt = state->bufcnt;
state->bufcnt = 0;
@@ -455,11 +505,13 @@ static int stm32_hash_update_cpu(struct stm32_hash_dev *hdev)
if (stm32_hash_wait_busy(hdev))
return -ETIMEDOUT;

+ swap_reg = hash_swap_reg(rctx);
+
if (!hdev->pdata->ux500)
*preg++ = stm32_hash_read(hdev, HASH_IMR);
*preg++ = stm32_hash_read(hdev, HASH_STR);
*preg++ = stm32_hash_read(hdev, HASH_CR);
- for (i = 0; i < HASH_CSR_REGISTER_NUMBER; i++)
+ for (i = 0; i < swap_reg; i++)
*preg++ = stm32_hash_read(hdev, HASH_CSR(i));

state->flags |= HASH_FLAGS_INIT;
@@ -544,7 +596,7 @@ static int stm32_hash_hmac_dma_send(struct stm32_hash_dev *hdev)
struct stm32_hash_ctx *ctx = crypto_ahash_ctx(tfm);
int err;

- if (ctx->keylen < HASH_DMA_THRESHOLD || (hdev->dma_mode == 1)) {
+ if (ctx->keylen < rctx->state.blocklen || hdev->dma_mode == 1) {
err = stm32_hash_write_key(hdev);
if (stm32_hash_wait_busy(hdev))
return -ETIMEDOUT;
@@ -579,8 +631,8 @@ static int stm32_hash_dma_init(struct stm32_hash_dev *hdev)
dma_conf.direction = DMA_MEM_TO_DEV;
dma_conf.dst_addr = hdev->phys_base + HASH_DIN;
dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- dma_conf.src_maxburst = hdev->dma_maxburst;
- dma_conf.dst_maxburst = hdev->dma_maxburst;
+ dma_conf.src_maxburst = HASH_BURST_LEVEL;
+ dma_conf.dst_maxburst = HASH_BURST_LEVEL;
dma_conf.device_fc = false;

chan = dma_request_chan(hdev->dev, "in");
@@ -614,7 +666,6 @@ static int stm32_hash_dma_send(struct stm32_hash_dev *hdev)
rctx->total = hdev->req->nbytes;

rctx->nents = sg_nents(rctx->sg);
-
if (rctx->nents < 0)
return -EINVAL;

@@ -718,11 +769,12 @@ static struct stm32_hash_dev *stm32_hash_find_dev(struct stm32_hash_ctx *ctx)
static bool stm32_hash_dma_aligned_data(struct ahash_request *req)
{
struct scatterlist *sg;
+ struct stm32_hash_request_ctx *rctx = ahash_request_ctx(req);
struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
int i;

- if (req->nbytes <= HASH_DMA_THRESHOLD)
+ if (!hdev->dma_lch || req->nbytes <= rctx->state.blocklen)
return false;

if (sg_nents(req->src) > 1) {
@@ -748,31 +800,64 @@ static int stm32_hash_init(struct ahash_request *req)
struct stm32_hash_request_ctx *rctx = ahash_request_ctx(req);
struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
struct stm32_hash_state *state = &rctx->state;
+ bool sha3_mode = ctx->flags & HASH_FLAGS_SHA3_MODE;

rctx->hdev = hdev;

state->flags = HASH_FLAGS_CPU;

+ if (sha3_mode)
+ state->flags |= HASH_FLAGS_SHA3_MODE;
+
rctx->digcnt = crypto_ahash_digestsize(tfm);
switch (rctx->digcnt) {
case MD5_DIGEST_SIZE:
- state->flags |= HASH_FLAGS_MD5;
+ state->flags |= HASH_MD5 << HASH_FLAGS_ALGO_SHIFT;
break;
case SHA1_DIGEST_SIZE:
- state->flags |= HASH_FLAGS_SHA1;
+ if (hdev->pdata->ux500)
+ state->flags |= HASH_SHA1_UX500 << HASH_FLAGS_ALGO_SHIFT;
+ else
+ state->flags |= HASH_SHA1 << HASH_FLAGS_ALGO_SHIFT;
break;
case SHA224_DIGEST_SIZE:
- state->flags |= HASH_FLAGS_SHA224;
+ if (sha3_mode)
+ state->flags |= HASH_SHA3_224 << HASH_FLAGS_ALGO_SHIFT;
+ else
+ state->flags |= HASH_SHA224 << HASH_FLAGS_ALGO_SHIFT;
break;
case SHA256_DIGEST_SIZE:
- state->flags |= HASH_FLAGS_SHA256;
+ if (sha3_mode) {
+ state->flags |= HASH_SHA3_256 << HASH_FLAGS_ALGO_SHIFT;
+ } else {
+ if (hdev->pdata->ux500)
+ state->flags |= HASH_SHA256_UX500 << HASH_FLAGS_ALGO_SHIFT;
+ else
+ state->flags |= HASH_SHA256 << HASH_FLAGS_ALGO_SHIFT;
+ }
+ break;
+ case SHA384_DIGEST_SIZE:
+ if (sha3_mode)
+ state->flags |= HASH_SHA3_384 << HASH_FLAGS_ALGO_SHIFT;
+ else
+ state->flags |= HASH_SHA384 << HASH_FLAGS_ALGO_SHIFT;
+ break;
+ case SHA512_DIGEST_SIZE:
+ if (sha3_mode)
+ state->flags |= HASH_SHA3_512 << HASH_FLAGS_ALGO_SHIFT;
+ else
+ state->flags |= HASH_SHA512 << HASH_FLAGS_ALGO_SHIFT;
break;
default:
return -EINVAL;
}

rctx->state.bufcnt = 0;
- rctx->state.buflen = HASH_BUFLEN;
+ rctx->state.blocklen = crypto_ahash_blocksize(tfm) + sizeof(u32);
+ if (rctx->state.blocklen > HASH_BUFLEN) {
+ dev_err(hdev->dev, "Error, block too large");
+ return -EINVAL;
+ }
rctx->total = 0;
rctx->offset = 0;
rctx->data_type = HASH_DATA_8_BITS;
@@ -842,6 +927,7 @@ static void stm32_hash_emptymsg_fallback(struct ahash_request *req)

static void stm32_hash_copy_hash(struct ahash_request *req)
{
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct stm32_hash_request_ctx *rctx = ahash_request_ctx(req);
struct stm32_hash_state *state = &rctx->state;
struct stm32_hash_dev *hdev = rctx->hdev;
@@ -851,22 +937,7 @@ static void stm32_hash_copy_hash(struct ahash_request *req)
if (hdev->pdata->broken_emptymsg && (state->flags & HASH_FLAGS_EMPTY))
return stm32_hash_emptymsg_fallback(req);

- switch (state->flags & HASH_FLAGS_ALGO_MASK) {
- case HASH_FLAGS_MD5:
- hashsize = MD5_DIGEST_SIZE;
- break;
- case HASH_FLAGS_SHA1:
- hashsize = SHA1_DIGEST_SIZE;
- break;
- case HASH_FLAGS_SHA224:
- hashsize = SHA224_DIGEST_SIZE;
- break;
- case HASH_FLAGS_SHA256:
- hashsize = SHA256_DIGEST_SIZE;
- break;
- default:
- return;
- }
+ hashsize = crypto_ahash_digestsize(tfm);

for (i = 0; i < hashsize / sizeof(u32); i++) {
if (hdev->pdata->ux500)
@@ -881,6 +952,11 @@ static void stm32_hash_copy_hash(struct ahash_request *req)
static int stm32_hash_finish(struct ahash_request *req)
{
struct stm32_hash_request_ctx *rctx = ahash_request_ctx(req);
+ u32 reg;
+
+ reg = stm32_hash_read(rctx->hdev, HASH_SR);
+ reg &= ~HASH_SR_OUTPUT_READY;
+ stm32_hash_write(rctx->hdev, HASH_SR, reg);

if (!req->result)
return -EINVAL;
@@ -920,6 +996,7 @@ static int stm32_hash_one_request(struct crypto_engine *engine, void *areq)
struct stm32_hash_request_ctx *rctx = ahash_request_ctx(req);
struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
struct stm32_hash_state *state = &rctx->state;
+ int swap_reg;
int err = 0;

if (!hdev)
@@ -932,6 +1009,7 @@ static int stm32_hash_one_request(struct crypto_engine *engine, void *areq)

hdev->req = req;
hdev->flags = 0;
+ swap_reg = hash_swap_reg(rctx);

if (state->flags & HASH_FLAGS_INIT) {
u32 *preg = rctx->state.hw_context;
@@ -945,7 +1023,7 @@ static int stm32_hash_one_request(struct crypto_engine *engine, void *areq)
reg = *preg++ | HASH_CR_INIT;
stm32_hash_write(hdev, HASH_CR, reg);

- for (i = 0; i < HASH_CSR_REGISTER_NUMBER; i++)
+ for (i = 0; i < swap_reg; i++)
stm32_hash_write(hdev, HASH_CSR(i), *preg++);

hdev->flags |= HASH_FLAGS_INIT;
@@ -1000,7 +1078,7 @@ static int stm32_hash_update(struct ahash_request *req)
rctx->sg = req->src;
rctx->offset = 0;

- if ((state->bufcnt + rctx->total < state->buflen)) {
+ if ((state->bufcnt + rctx->total < state->blocklen)) {
stm32_hash_append_sg(rctx);
return 0;
}
@@ -1102,8 +1180,7 @@ static int stm32_hash_init_fallback(struct crypto_tfm *tfm)
return 0;
}

-static int stm32_hash_cra_init_algs(struct crypto_tfm *tfm,
- const char *algs_hmac_name)
+static int stm32_hash_cra_init_algs(struct crypto_tfm *tfm, u32 algs_flags)
{
struct stm32_hash_ctx *ctx = crypto_tfm_ctx(tfm);

@@ -1112,8 +1189,8 @@ static int stm32_hash_cra_init_algs(struct crypto_tfm *tfm,

ctx->keylen = 0;

- if (algs_hmac_name)
- ctx->flags |= HASH_FLAGS_HMAC;
+ if (algs_flags)
+ ctx->flags |= algs_flags;

ctx->enginectx.op.do_one_request = stm32_hash_one_request;

@@ -1122,28 +1199,25 @@ static int stm32_hash_cra_init_algs(struct crypto_tfm *tfm,

static int stm32_hash_cra_init(struct crypto_tfm *tfm)
{
- return stm32_hash_cra_init_algs(tfm, NULL);
+ return stm32_hash_cra_init_algs(tfm, 0);
}

-static int stm32_hash_cra_md5_init(struct crypto_tfm *tfm)
+static int stm32_hash_cra_hmac_init(struct crypto_tfm *tfm)
{
- return stm32_hash_cra_init_algs(tfm, "md5");
+ return stm32_hash_cra_init_algs(tfm, HASH_FLAGS_HMAC);
}

-static int stm32_hash_cra_sha1_init(struct crypto_tfm *tfm)
+static int stm32_hash_cra_sha3_init(struct crypto_tfm *tfm)
{
- return stm32_hash_cra_init_algs(tfm, "sha1");
+ return stm32_hash_cra_init_algs(tfm, HASH_FLAGS_SHA3_MODE);
}

-static int stm32_hash_cra_sha224_init(struct crypto_tfm *tfm)
+static int stm32_hash_cra_sha3_hmac_init(struct crypto_tfm *tfm)
{
- return stm32_hash_cra_init_algs(tfm, "sha224");
+ return stm32_hash_cra_init_algs(tfm, HASH_FLAGS_SHA3_MODE |
+ HASH_FLAGS_HMAC);
}

-static int stm32_hash_cra_sha256_init(struct crypto_tfm *tfm)
-{
- return stm32_hash_cra_init_algs(tfm, "sha256");
-}

static void stm32_hash_cra_exit(struct crypto_tfm *tfm)
{
@@ -1185,8 +1259,6 @@ static irqreturn_t stm32_hash_irq_handler(int irq, void *dev_id)

reg = stm32_hash_read(hdev, HASH_SR);
if (reg & HASH_SR_OUTPUT_READY) {
- reg &= ~HASH_SR_OUTPUT_READY;
- stm32_hash_write(hdev, HASH_SR, reg);
hdev->flags |= HASH_FLAGS_OUTPUT_READY;
/* Disable IT*/
stm32_hash_write(hdev, HASH_IMR, 0);
@@ -1244,12 +1316,12 @@ static struct ahash_alg algs_md5[] = {
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct stm32_hash_ctx),
.cra_alignmask = 3,
- .cra_init = stm32_hash_cra_md5_init,
+ .cra_init = stm32_hash_cra_hmac_init,
.cra_exit = stm32_hash_cra_exit,
.cra_module = THIS_MODULE,
}
}
- },
+ }
};

static struct ahash_alg algs_sha1[] = {
@@ -1300,7 +1372,7 @@ static struct ahash_alg algs_sha1[] = {
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct stm32_hash_ctx),
.cra_alignmask = 3,
- .cra_init = stm32_hash_cra_sha1_init,
+ .cra_init = stm32_hash_cra_hmac_init,
.cra_exit = stm32_hash_cra_exit,
.cra_module = THIS_MODULE,
}
@@ -1356,7 +1428,7 @@ static struct ahash_alg algs_sha224[] = {
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct stm32_hash_ctx),
.cra_alignmask = 3,
- .cra_init = stm32_hash_cra_sha224_init,
+ .cra_init = stm32_hash_cra_hmac_init,
.cra_exit = stm32_hash_cra_exit,
.cra_module = THIS_MODULE,
}
@@ -1412,12 +1484,336 @@ static struct ahash_alg algs_sha256[] = {
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct stm32_hash_ctx),
.cra_alignmask = 3,
- .cra_init = stm32_hash_cra_sha256_init,
+ .cra_init = stm32_hash_cra_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+};
+
+static struct ahash_alg algs_sha384_sha512[] = {
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha384",
+ .cra_driver_name = "stm32-sha384",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .setkey = stm32_hash_setkey,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha384)",
+ .cra_driver_name = "stm32-hmac-sha384",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha512",
+ .cra_driver_name = "stm32-sha512",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .setkey = stm32_hash_setkey,
+ .halg = {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha512)",
+ .cra_driver_name = "stm32-hmac-sha512",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+};
+
+static struct ahash_alg algs_sha3[] = {
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA3_224_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha3-224",
+ .cra_driver_name = "stm32-sha3-224",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_224_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_init,
.cra_exit = stm32_hash_cra_exit,
.cra_module = THIS_MODULE,
}
}
},
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .setkey = stm32_hash_setkey,
+ .halg = {
+ .digestsize = SHA3_224_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha3-224)",
+ .cra_driver_name = "stm32-hmac-sha3-224",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_224_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA3_256_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha3-256",
+ .cra_driver_name = "stm32-sha3-256",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_256_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .setkey = stm32_hash_setkey,
+ .halg = {
+ .digestsize = SHA3_256_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha3-256)",
+ .cra_driver_name = "stm32-hmac-sha3-256",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_256_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA3_384_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha3-384",
+ .cra_driver_name = "stm32-sha3-384",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .setkey = stm32_hash_setkey,
+ .halg = {
+ .digestsize = SHA3_384_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha3-384)",
+ .cra_driver_name = "stm32-hmac-sha3-384",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .halg = {
+ .digestsize = SHA3_512_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "sha3-512",
+ .cra_driver_name = "stm32-sha3-512",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ },
+ {
+ .init = stm32_hash_init,
+ .update = stm32_hash_update,
+ .final = stm32_hash_final,
+ .finup = stm32_hash_finup,
+ .digest = stm32_hash_digest,
+ .export = stm32_hash_export,
+ .import = stm32_hash_import,
+ .setkey = stm32_hash_setkey,
+ .halg = {
+ .digestsize = SHA3_512_DIGEST_SIZE,
+ .statesize = sizeof(struct stm32_hash_state),
+ .base = {
+ .cra_name = "hmac(sha3-512)",
+ .cra_driver_name = "stm32-hmac-sha3-512",
+ .cra_priority = 200,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA3_512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct stm32_hash_ctx),
+ .cra_alignmask = 3,
+ .cra_init = stm32_hash_cra_sha3_hmac_init,
+ .cra_exit = stm32_hash_cra_exit,
+ .cra_module = THIS_MODULE,
+ }
+ }
+ }
};

static int stm32_hash_register_algs(struct stm32_hash_dev *hdev)
@@ -1471,6 +1867,7 @@ static struct stm32_hash_algs_info stm32_hash_algs_info_ux500[] = {
};

static const struct stm32_hash_pdata stm32_hash_pdata_ux500 = {
+ .alg_shift = 7,
.algs_info = stm32_hash_algs_info_ux500,
.algs_info_size = ARRAY_SIZE(stm32_hash_algs_info_ux500),
.broken_emptymsg = true,
@@ -1489,6 +1886,7 @@ static struct stm32_hash_algs_info stm32_hash_algs_info_stm32f4[] = {
};

static const struct stm32_hash_pdata stm32_hash_pdata_stm32f4 = {
+ .alg_shift = 7,
.algs_info = stm32_hash_algs_info_stm32f4,
.algs_info_size = ARRAY_SIZE(stm32_hash_algs_info_stm32f4),
.has_sr = true,
@@ -1515,25 +1913,49 @@ static struct stm32_hash_algs_info stm32_hash_algs_info_stm32f7[] = {
};

static const struct stm32_hash_pdata stm32_hash_pdata_stm32f7 = {
+ .alg_shift = 7,
.algs_info = stm32_hash_algs_info_stm32f7,
.algs_info_size = ARRAY_SIZE(stm32_hash_algs_info_stm32f7),
.has_sr = true,
.has_mdmat = true,
};

-static const struct of_device_id stm32_hash_of_match[] = {
+static struct stm32_hash_algs_info stm32_hash_algs_info_stm32mp13[] = {
+ {
+ .algs_list = algs_sha1,
+ .size = ARRAY_SIZE(algs_sha1),
+ },
+ {
+ .algs_list = algs_sha224,
+ .size = ARRAY_SIZE(algs_sha224),
+ },
{
- .compatible = "stericsson,ux500-hash",
- .data = &stm32_hash_pdata_ux500,
+ .algs_list = algs_sha256,
+ .size = ARRAY_SIZE(algs_sha256),
},
{
- .compatible = "st,stm32f456-hash",
- .data = &stm32_hash_pdata_stm32f4,
+ .algs_list = algs_sha384_sha512,
+ .size = ARRAY_SIZE(algs_sha384_sha512),
},
{
- .compatible = "st,stm32f756-hash",
- .data = &stm32_hash_pdata_stm32f7,
+ .algs_list = algs_sha3,
+ .size = ARRAY_SIZE(algs_sha3),
},
+};
+
+static const struct stm32_hash_pdata stm32_hash_pdata_stm32mp13 = {
+ .alg_shift = 17,
+ .algs_info = stm32_hash_algs_info_stm32mp13,
+ .algs_info_size = ARRAY_SIZE(stm32_hash_algs_info_stm32mp13),
+ .has_sr = true,
+ .has_mdmat = true,
+};
+
+static const struct of_device_id stm32_hash_of_match[] = {
+ { .compatible = "stericsson,ux500-hash", .data = &stm32_hash_pdata_ux500 },
+ { .compatible = "st,stm32f456-hash", .data = &stm32_hash_pdata_stm32f4 },
+ { .compatible = "st,stm32f756-hash", .data = &stm32_hash_pdata_stm32f7 },
+ { .compatible = "st,stm32mp13-hash", .data = &stm32_hash_pdata_stm32mp13 },
{},
};

@@ -1548,12 +1970,6 @@ static int stm32_hash_get_of_match(struct stm32_hash_dev *hdev,
return -EINVAL;
}

- if (of_property_read_u32(dev->of_node, "dma-maxburst",
- &hdev->dma_maxburst)) {
- dev_info(dev, "dma-maxburst not specified, using 0\n");
- hdev->dma_maxburst = 0;
- }
-
return 0;
}

@@ -1663,7 +2079,7 @@ static int stm32_hash_probe(struct platform_device *pdev)
/* FIXME: implement DMA mode for Ux500 */
hdev->dma_mode = 0;
else
- hdev->dma_mode = stm32_hash_read(hdev, HASH_HWCFGR);
+ hdev->dma_mode = stm32_hash_read(hdev, HASH_HWCFGR) & HASH_HWCFG_DMA_MASK;

/* Register algos */
ret = stm32_hash_register_algs(hdev);
@@ -1772,6 +2188,6 @@ static struct platform_driver stm32_hash_driver = {

module_platform_driver(stm32_hash_driver);

-MODULE_DESCRIPTION("STM32 SHA1/224/256 & MD5 (HMAC) hw accelerator driver");
+MODULE_DESCRIPTION("STM32 SHA1/SHA2/SHA3 & MD5 (HMAC) hw accelerator driver");
MODULE_AUTHOR("Lionel Debieve <lionel.debieve@xxxxxx>");
MODULE_LICENSE("GPL v2");
--
2.25.1