[PATCH v2 06/16] crypto: qce - Convert register r/w for skcipher via BAM/DMA

Md Sadre Alam
2024-08-15T08:57:57Z

Convert register read/write for skcipher via BAM/DMA.
with this change all the crypto register configuration
will be done via BAM/DMA. This change will prepare command
descriptor for all register and write it once.

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
Change in [v2]

* No change

Change in [v1]

* Added crypto register read/write via bam for skcipher

drivers/crypto/qce/common.c | 42 ++++++++++++++++++++++---------------
1 file changed, 25 insertions(+), 17 deletions(-)

diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c
index 04253a8d3340..d1da6b1938f3 100644
--- a/drivers/crypto/qce/common.c
+++ b/drivers/crypto/qce/common.c
@@ -34,7 +34,7 @@ static inline void qce_write_array(struct qce_device *qce, u32 offset,
int i;

for (i = 0; i < len; i++)
- qce_write(qce, offset + i * sizeof(u32), val[i]);
+ qce_write_reg_dma(qce, offset + i * sizeof(u32), val[i], 1);
}

static inline void
@@ -43,7 +43,7 @@ qce_clear_array(struct qce_device *qce, u32 offset, unsigned int len)
int i;

for (i = 0; i < len; i++)
- qce_write(qce, offset + i * sizeof(u32), 0);
+ qce_write_reg_dma(qce, offset + i * sizeof(u32), 0, 1);
}

static u32 qce_config_reg(struct qce_device *qce, int little)
@@ -86,16 +86,16 @@ static void qce_setup_config(struct qce_device *qce)
config = qce_config_reg(qce, 0);

/* clear status */
- qce_write(qce, REG_STATUS, 0);
- qce_write(qce, REG_CONFIG, config);
+ qce_write_reg_dma(qce, REG_STATUS, 0, 1);
+ qce_write_reg_dma(qce, REG_CONFIG, config, 1);
}

static inline void qce_crypto_go(struct qce_device *qce, bool result_dump)
{
if (result_dump)
- qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT));
+ qce_write_reg_dma(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT), 1);
else
- qce_write(qce, REG_GOPROC, BIT(GO_SHIFT));
+ qce_write_reg_dma(qce, REG_GOPROC, BIT(GO_SHIFT), 1);
}

#if defined(CONFIG_CRYPTO_DEV_QCE_SHA) || defined(CONFIG_CRYPTO_DEV_QCE_AEAD)
@@ -308,7 +308,7 @@ static void qce_xtskey(struct qce_device *qce, const u8 *enckey,
/* Set data unit size to cryptlen. Anything else causes
* crypto engine to return back incorrect results.
*/
- qce_write(qce, REG_ENCR_XTS_DU_SIZE, cryptlen);
+ qce_write_reg_dma(qce, REG_ENCR_XTS_DU_SIZE, cryptlen, 1);
}

static int qce_setup_regs_skcipher(struct crypto_async_request *async_req)
@@ -325,7 +325,9 @@ static int qce_setup_regs_skcipher(struct crypto_async_request *async_req)
u32 encr_cfg = 0, auth_cfg = 0, config;
unsigned int ivsize = rctx->ivsize;
unsigned long flags = rctx->flags;
+ int ret;

+ qce_clear_bam_transaction(qce);
qce_setup_config(qce);

if (IS_XTS(flags))
@@ -336,7 +338,7 @@ static int qce_setup_regs_skcipher(struct crypto_async_request *async_req)
qce_cpu_to_be32p_array(enckey, ctx->enc_key, keylen);
enckey_words = keylen / sizeof(u32);

- qce_write(qce, REG_AUTH_SEG_CFG, auth_cfg);
+ qce_write_reg_dma(qce, REG_AUTH_SEG_CFG, auth_cfg, 1);

encr_cfg = qce_encr_cfg(flags, keylen);

@@ -369,25 +371,31 @@ static int qce_setup_regs_skcipher(struct crypto_async_request *async_req)
if (IS_ENCRYPT(flags))
encr_cfg |= BIT(ENCODE_SHIFT);

- qce_write(qce, REG_ENCR_SEG_CFG, encr_cfg);
- qce_write(qce, REG_ENCR_SEG_SIZE, rctx->cryptlen);
- qce_write(qce, REG_ENCR_SEG_START, 0);
+ qce_write_reg_dma(qce, REG_ENCR_SEG_CFG, encr_cfg, 1);
+ qce_write_reg_dma(qce, REG_ENCR_SEG_SIZE, rctx->cryptlen, 1);
+ qce_write_reg_dma(qce, REG_ENCR_SEG_START, 0, 1);

if (IS_CTR(flags)) {
- qce_write(qce, REG_CNTR_MASK, ~0);
- qce_write(qce, REG_CNTR_MASK0, ~0);
- qce_write(qce, REG_CNTR_MASK1, ~0);
- qce_write(qce, REG_CNTR_MASK2, ~0);
+ qce_write_reg_dma(qce, REG_CNTR_MASK, ~0, 1);
+ qce_write_reg_dma(qce, REG_CNTR_MASK0, ~0, 1);
+ qce_write_reg_dma(qce, REG_CNTR_MASK1, ~0, 1);
+ qce_write_reg_dma(qce, REG_CNTR_MASK2, ~0, 1);
}

- qce_write(qce, REG_SEG_SIZE, rctx->cryptlen);
+ qce_write_reg_dma(qce, REG_SEG_SIZE, rctx->cryptlen, 1);

/* get little endianness */
config = qce_config_reg(qce, 1);
- qce_write(qce, REG_CONFIG, config);
+ qce_write_reg_dma(qce, REG_CONFIG, config, 1);

qce_crypto_go(qce, true);

+ ret = qce_submit_cmd_desc(qce, 0);
+ if (ret) {
+ dev_err(qce->dev, "Error in skcipher cmd descriptor\n");
+ return ret;
+ }
+
return 0;
}
#endif
--
2.34.1