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Subject[PATCH 08/35] crypto: ccree: adapt CPP descriptor to new HW
Date
Adapt the CPP descriptor to new HW interface.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
---
drivers/crypto/ccree/cc_cipher.c | 42 +++++++++++++------------
drivers/crypto/ccree/cc_hw_queue_defs.h | 18 +++++------
drivers/crypto/ccree/cc_kernel_regs.h | 6 ----
3 files changed, 29 insertions(+), 37 deletions(-)

diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index 8acedbafbcb3..4c7231d24631 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -546,6 +546,19 @@ static void cc_setup_state_desc(struct crypto_tfm *tfm,
}
}

+static int cc_out_flow_mode(struct cc_cipher_ctx *ctx_p)
+{
+ switch (ctx_p->flow_mode) {
+ case S_DIN_to_AES:
+ return DIN_AES_DOUT;
+ case S_DIN_to_DES:
+ return DIN_DES_DOUT;
+ case S_DIN_to_SM4:
+ return DIN_SM4_DOUT;
+ default:
+ return ctx_p->flow_mode;
+ }
+}

static void cc_setup_key_desc(struct crypto_tfm *tfm,
struct cipher_req_ctx *req_ctx,
@@ -577,12 +590,15 @@ static void cc_setup_key_desc(struct crypto_tfm *tfm,
case DRV_CIPHER_ECB:
/* Load key */
hw_desc_init(&desc[*seq_size]);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ set_cipher_config0(&desc[*seq_size], direction);
+
if (cc_key_type(tfm) == CC_POLICY_PROTECTED_KEY) {
- set_cpp_crypto_key(&desc[*seq_size], ctx_p->cpp.alg,
- cipher_mode, ctx_p->cpp.slot);
+ /* We use the AES key size coding for all CPP algs */
+ set_key_size_aes(&desc[*seq_size], key_len);
+ set_cpp_crypto_key(&desc[*seq_size], ctx_p->cpp.slot);
+ flow_mode = cc_out_flow_mode(ctx_p);
} else {
- set_cipher_mode(&desc[*seq_size], cipher_mode);
- set_cipher_config0(&desc[*seq_size], direction);
if (flow_mode == S_DIN_to_AES) {
if (cc_key_type(tfm) == CC_HW_PROTECTED_KEY) {
set_hw_crypto_key(&desc[*seq_size],
@@ -606,9 +622,9 @@ static void cc_setup_key_desc(struct crypto_tfm *tfm,
key_dma_addr, key_len, NS_BIT);
set_key_size_des(&desc[*seq_size], key_len);
}
- set_flow_mode(&desc[*seq_size], flow_mode);
set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0);
}
+ set_flow_mode(&desc[*seq_size], flow_mode);
(*seq_size)++;
break;
case DRV_CIPHER_XTS:
@@ -670,22 +686,8 @@ static void cc_setup_flow_desc(struct crypto_tfm *tfm,
{
struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct device *dev = drvdata_to_dev(ctx_p->drvdata);
- unsigned int flow_mode = ctx_p->flow_mode;
+ unsigned int flow_mode = cc_out_flow_mode(ctx_p);

- switch (ctx_p->flow_mode) {
- case S_DIN_to_AES:
- flow_mode = DIN_AES_DOUT;
- break;
- case S_DIN_to_DES:
- flow_mode = DIN_DES_DOUT;
- break;
- case S_DIN_to_SM4:
- flow_mode = DIN_SM4_DOUT;
- break;
- default:
- dev_err(dev, "invalid flow mode, flow_mode = %d\n", flow_mode);
- return;
- }
/* Process */
if (req_ctx->dma_buf_type == CC_DMA_BUF_DLLI) {
dev_dbg(dev, " data params addr %pad length 0x%X\n",
diff --git a/drivers/crypto/ccree/cc_hw_queue_defs.h b/drivers/crypto/ccree/cc_hw_queue_defs.h
index 2c8cd907d8db..fd693681808e 100644
--- a/drivers/crypto/ccree/cc_hw_queue_defs.h
+++ b/drivers/crypto/ccree/cc_hw_queue_defs.h
@@ -55,8 +55,6 @@
#define WORD4_DATA_FLOW_MODE CC_GENMASK(4, DATA_FLOW_MODE)
#define WORD4_KEY_SIZE CC_GENMASK(4, KEY_SIZE)
#define WORD4_SETUP_OPERATION CC_GENMASK(4, SETUP_OPERATION)
-#define WORD4_CPP_ALG CC_GENMASK(4, CPP_ALG)
-#define WORD4_CPP_SLOT CC_GENMASK(4, CPP_SLOT)
#define WORD5_DIN_ADDR_HIGH CC_GENMASK(5, DIN_ADDR_HIGH)
#define WORD5_DOUT_ADDR_HIGH CC_GENMASK(5, DOUT_ADDR_HIGH)

@@ -202,7 +200,8 @@ enum cc_hash_cipher_pad {
HASH_CIPHER_DO_PADDING_RESERVE32 = S32_MAX,
};

-#define CC_CPP_DESC_INDICATOR 0xFF0000UL
+#define CC_CPP_DIN_ADDR 0xFF00FF00UL
+#define CC_CPP_DIN_SIZE 0xFF00FFUL

/*****************************/
/* Descriptor packing macros */
@@ -272,17 +271,14 @@ static inline void set_din_no_dma(struct cc_hw_desc *pdesc, u32 addr, u32 size)
* @slot: slot number
* @ksize: key size
*/
-static inline void set_cpp_crypto_key(struct cc_hw_desc *pdesc,
- enum cc_cpp_alg alg,
- enum drv_cipher_mode mode, u8 slot)
+static inline void set_cpp_crypto_key(struct cc_hw_desc *pdesc, u8 slot)
{
- u8 mode_val = (mode == DRV_CIPHER_CBC ? 0 : 1);
+ pdesc->word[0] |= CC_CPP_DIN_ADDR;

- pdesc->word[1] |= FIELD_PREP(WORD1_DIN_SIZE, CC_CPP_DESC_INDICATOR);
+ pdesc->word[1] |= FIELD_PREP(WORD1_DIN_SIZE, CC_CPP_DIN_SIZE);
pdesc->word[1] |= FIELD_PREP(WORD1_LOCK_QUEUE, 1);
- pdesc->word[0] |= FIELD_PREP(WORD0_CPP_CIPHER_MODE, mode_val);
- pdesc->word[4] |= FIELD_PREP(WORD4_CPP_ALG, alg);
- pdesc->word[4] |= FIELD_PREP(WORD4_CPP_SLOT, slot);
+
+ pdesc->word[4] |= FIELD_PREP(WORD4_SETUP_OPERATION, slot);
}

/*
diff --git a/drivers/crypto/ccree/cc_kernel_regs.h b/drivers/crypto/ccree/cc_kernel_regs.h
index f148d13c4b65..8d7262a35156 100644
--- a/drivers/crypto/ccree/cc_kernel_regs.h
+++ b/drivers/crypto/ccree/cc_kernel_regs.h
@@ -31,8 +31,6 @@
#define CC_DSCRPTR_QUEUE_WORD0_REG_OFFSET 0xE80UL
#define CC_DSCRPTR_QUEUE_WORD0_VALUE_BIT_SHIFT 0x0UL
#define CC_DSCRPTR_QUEUE_WORD0_VALUE_BIT_SIZE 0x20UL
-#define CC_DSCRPTR_QUEUE_WORD0_CPP_CIPHER_MODE_BIT_SHIFT 0x5UL
-#define CC_DSCRPTR_QUEUE_WORD0_CPP_CIPHER_MODE_BIT_SIZE 0x3UL
#define CC_DSCRPTR_QUEUE_WORD1_REG_OFFSET 0xE84UL
#define CC_DSCRPTR_QUEUE_WORD1_DIN_DMA_MODE_BIT_SHIFT 0x0UL
#define CC_DSCRPTR_QUEUE_WORD1_DIN_DMA_MODE_BIT_SIZE 0x2UL
@@ -99,10 +97,6 @@
#define CC_DSCRPTR_QUEUE_WORD4_WORD_SWAP_BIT_SIZE 0x1UL
#define CC_DSCRPTR_QUEUE_WORD4_BYTES_SWAP_BIT_SHIFT 0x1FUL
#define CC_DSCRPTR_QUEUE_WORD4_BYTES_SWAP_BIT_SIZE 0x1UL
-#define CC_DSCRPTR_QUEUE_WORD4_CPP_SLOT_BIT_SHIFT 0xAUL
-#define CC_DSCRPTR_QUEUE_WORD4_CPP_SLOT_BIT_SIZE 0x3UL
-#define CC_DSCRPTR_QUEUE_WORD4_CPP_ALG_BIT_SHIFT 0xDUL
-#define CC_DSCRPTR_QUEUE_WORD4_CPP_ALG_BIT_SIZE 0x1UL
#define CC_DSCRPTR_QUEUE_WORD5_REG_OFFSET 0xE94UL
#define CC_DSCRPTR_QUEUE_WORD5_DIN_ADDR_HIGH_BIT_SHIFT 0x0UL
#define CC_DSCRPTR_QUEUE_WORD5_DIN_ADDR_HIGH_BIT_SIZE 0x10UL
--
2.21.0
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