From: Gilad Ben-Yossef <gilad@benyossef.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ofir Drang <ofir.drang@arm.com>,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
driverdev-devel@linuxdriverproject.org,
devel@driverdev.osuosl.org
Subject: [PATCH 21/26] staging: ccree: fold common code into service func
Date: Mon, 1 Jan 2018 12:06:48 +0000 [thread overview]
Message-ID: <1514808421-21993-22-git-send-email-gilad@benyossef.com> (raw)
In-Reply-To: <1514808421-21993-1-git-send-email-gilad@benyossef.com>
Fold common code in hash call into service functions.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
---
drivers/staging/ccree/ssi_hash.c | 339 ++++++++++++++-------------------------
1 file changed, 116 insertions(+), 223 deletions(-)
diff --git a/drivers/staging/ccree/ssi_hash.c b/drivers/staging/ccree/ssi_hash.c
index d263934..475ee1a 100644
--- a/drivers/staging/ccree/ssi_hash.c
+++ b/drivers/staging/ccree/ssi_hash.c
@@ -319,6 +319,84 @@ static void cc_hash_complete(struct device *dev, void *cc_req, int err)
req->base.complete(&req->base, err);
}
+static int cc_fin_result(struct cc_hw_desc *desc, struct ahash_request *req,
+ int idx)
+{
+ struct ahash_req_ctx *state = ahash_request_ctx(req);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm);
+ u32 digestsize = crypto_ahash_digestsize(tfm);
+
+ /* Get final MAC result */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ /* TODO */
+ set_dout_dlli(&desc[idx], state->digest_result_dma_addr, digestsize,
+ NS_BIT, 1);
+ set_queue_last_ind(&desc[idx]);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
+ cc_set_endianity(ctx->hash_mode, &desc[idx]);
+ idx++;
+
+ return idx;
+}
+
+static int cc_fin_hmac(struct cc_hw_desc *desc, struct ahash_request *req,
+ int idx)
+{
+ struct ahash_req_ctx *state = ahash_request_ctx(req);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm);
+ u32 digestsize = crypto_ahash_digestsize(tfm);
+
+ /* store the hash digest result in the context */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, digestsize,
+ NS_BIT, 0);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ cc_set_endianity(ctx->hash_mode, &desc[idx]);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ idx++;
+
+ /* Loading hash opad xor key state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ set_din_type(&desc[idx], DMA_DLLI, state->opad_digest_dma_addr,
+ ctx->inter_digestsize, NS_BIT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Load the hash current length */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ set_din_sram(&desc[idx],
+ cc_digest_len_addr(ctx->drvdata, ctx->hash_mode),
+ HASH_LEN_SIZE);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ /* Memory Barrier: wait for IPAD/OPAD axi write to complete */
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ idx++;
+
+ /* Perform HASH update */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
+ digestsize, NS_BIT);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+
+ return idx;
+}
+
static int cc_hash_digest(struct ahash_request *req)
{
struct ahash_req_ctx *state = ahash_request_ctx(req);
@@ -414,62 +492,10 @@ static int cc_hash_digest(struct ahash_request *req)
set_cipher_do(&desc[idx], DO_PAD);
idx++;
- /* store the hash digest result in the context */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_dout_dlli(&desc[idx], state->digest_buff_dma_addr,
- digestsize, NS_BIT, 0);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- idx++;
-
- /* Loading hash opad xor key state */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->opad_digest_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
-
- /* Load the hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_sram(&desc[idx],
- cc_digest_len_addr(ctx->drvdata, ctx->hash_mode),
- HASH_LEN_SIZE);
- set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
-
- /* Memory Barrier: wait for IPAD/OPAD axi write to complete */
- hw_desc_init(&desc[idx]);
- set_din_no_dma(&desc[idx], 0, 0xfffff0);
- set_dout_no_dma(&desc[idx], 0, 0, 1);
- idx++;
-
- /* Perform HASH update */
- hw_desc_init(&desc[idx]);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- digestsize, NS_BIT);
- set_flow_mode(&desc[idx], DIN_HASH);
- idx++;
+ idx = cc_fin_hmac(desc, req, idx);
}
- /* Get final MAC result */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- /* TODO */
- set_dout_dlli(&desc[idx], state->digest_result_dma_addr, digestsize,
- NS_BIT, 1);
- set_queue_last_ind(&desc[idx]);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- idx++;
+ idx = cc_fin_result(desc, req, idx);
rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base);
if (rc != -EINPROGRESS && rc != -EBUSY) {
@@ -481,6 +507,33 @@ static int cc_hash_digest(struct ahash_request *req)
return rc;
}
+static int cc_restore_hash(struct cc_hw_desc *desc, struct cc_hash_ctx *ctx,
+ struct ahash_req_ctx *state, int idx)
+{
+ /* Restore hash digest */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
+ ctx->inter_digestsize, NS_BIT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Restore hash current length */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], ctx->hw_mode);
+ set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
+ set_din_type(&desc[idx], DMA_DLLI, state->digest_bytes_len_dma_addr,
+ HASH_LEN_SIZE, NS_BIT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx);
+
+ return idx;
+}
+
static int cc_hash_update(struct ahash_request *req)
{
struct ahash_req_ctx *state = ahash_request_ctx(req);
@@ -527,24 +580,7 @@ static int cc_hash_update(struct ahash_request *req)
cc_req.user_cb = cc_update_complete;
cc_req.user_arg = req;
- /* Restore hash digest */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
- /* Restore hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_bytes_len_dma_addr,
- HASH_LEN_SIZE, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
-
- cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx);
+ idx = cc_restore_hash(desc, ctx, state, idx);
/* store the hash digest result in context */
hw_desc_init(&desc[idx]);
@@ -616,84 +652,12 @@ static int cc_hash_finup(struct ahash_request *req)
cc_req.user_cb = cc_hash_complete;
cc_req.user_arg = req;
- /* Restore hash digest */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
-
- /* Restore hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_bytes_len_dma_addr,
- HASH_LEN_SIZE, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
+ idx = cc_restore_hash(desc, ctx, state, idx);
- cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx);
+ if (is_hmac)
+ idx = cc_fin_hmac(desc, req, idx);
- if (is_hmac) {
- /* Store the hash digest result in the context */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_dout_dlli(&desc[idx], state->digest_buff_dma_addr,
- digestsize, NS_BIT, 0);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- idx++;
-
- /* Loading hash OPAD xor key state */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->opad_digest_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
-
- /* Load the hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_sram(&desc[idx],
- cc_digest_len_addr(ctx->drvdata, ctx->hash_mode),
- HASH_LEN_SIZE);
- set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
-
- /* Memory Barrier: wait for IPAD/OPAD axi write to complete */
- hw_desc_init(&desc[idx]);
- set_din_no_dma(&desc[idx], 0, 0xfffff0);
- set_dout_no_dma(&desc[idx], 0, 0, 1);
- idx++;
-
- /* Perform HASH update on last digest */
- hw_desc_init(&desc[idx]);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- digestsize, NS_BIT);
- set_flow_mode(&desc[idx], DIN_HASH);
- idx++;
- }
-
- /* Get final MAC result */
- hw_desc_init(&desc[idx]);
- /* TODO */
- set_dout_dlli(&desc[idx], state->digest_result_dma_addr, digestsize,
- NS_BIT, 1);
- set_queue_last_ind(&desc[idx]);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- idx++;
+ idx = cc_fin_result(desc, req, idx);
rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base);
if (rc != -EINPROGRESS && rc != -EBUSY) {
@@ -748,26 +712,7 @@ static int cc_hash_final(struct ahash_request *req)
cc_req.user_cb = cc_hash_complete;
cc_req.user_arg = req;
- /* Restore hash digest */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
-
- /* Restore hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_bytes_len_dma_addr,
- HASH_LEN_SIZE, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
-
- cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx);
+ idx = cc_restore_hash(desc, ctx, state, idx);
/* "DO-PAD" must be enabled only when writing current length to HW */
hw_desc_init(&desc[idx]);
@@ -779,62 +724,10 @@ static int cc_hash_final(struct ahash_request *req)
set_flow_mode(&desc[idx], S_HASH_to_DOUT);
idx++;
- if (is_hmac) {
- /* Store the hash digest result in the context */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_dout_dlli(&desc[idx], state->digest_buff_dma_addr,
- digestsize, NS_BIT, 0);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- idx++;
-
- /* Loading hash OPAD xor key state */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_type(&desc[idx], DMA_DLLI, state->opad_digest_dma_addr,
- ctx->inter_digestsize, NS_BIT);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
- idx++;
-
- /* Load the hash current length */
- hw_desc_init(&desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- set_din_sram(&desc[idx],
- cc_digest_len_addr(ctx->drvdata, ctx->hash_mode),
- HASH_LEN_SIZE);
- set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
- set_flow_mode(&desc[idx], S_DIN_to_HASH);
- set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
- idx++;
-
- /* Memory Barrier: wait for IPAD/OPAD axi write to complete */
- hw_desc_init(&desc[idx]);
- set_din_no_dma(&desc[idx], 0, 0xfffff0);
- set_dout_no_dma(&desc[idx], 0, 0, 1);
- idx++;
+ if (is_hmac)
+ idx = cc_fin_hmac(desc, req, idx);
- /* Perform HASH update on last digest */
- hw_desc_init(&desc[idx]);
- set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr,
- digestsize, NS_BIT);
- set_flow_mode(&desc[idx], DIN_HASH);
- idx++;
- }
-
- /* Get final MAC result */
- hw_desc_init(&desc[idx]);
- set_dout_dlli(&desc[idx], state->digest_result_dma_addr, digestsize,
- NS_BIT, 1);
- set_queue_last_ind(&desc[idx]);
- set_flow_mode(&desc[idx], S_HASH_to_DOUT);
- set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
- set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
- cc_set_endianity(ctx->hash_mode, &desc[idx]);
- set_cipher_mode(&desc[idx], ctx->hw_mode);
- idx++;
+ idx = cc_fin_result(desc, req, idx);
rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base);
if (rc != -EINPROGRESS && rc != -EBUSY) {
--
2.7.4
next prev parent reply other threads:[~2018-01-01 12:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-01 12:06 [PATCH 00/26] staging: ccree: fixes and cleanups Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 01/26] staging: ccree: SPDXify driver Gilad Ben-Yossef
2018-01-01 13:53 ` Philippe Ombredanne
2018-01-01 14:11 ` Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 02/26] staging: ccree: fold hash defs into queue defs Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 03/26] staging: ccree: fold reg common defines into driver Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 04/26] staging: ccree: remove GFP_DMA flag from mem allocs Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 05/26] staging: ccree: pick alloc mem flags based on req flags Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 06/26] staging: ccree: copy larval digest from RAM Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 07/26] staging: ccree: tag debugfs init/exit func properly Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 08/26] staging: ccree: remove unused leftover field Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 09/26] staging: ccree: breakup send_request Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 10/26] staging: ccree: add backlog processing Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 11/26] stating: ccree: revert "staging: ccree: fix leak of import() after init()" Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 12/26] staging: ccree: failing the suspend is not an error Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 13/26] staging: ccree: check DMA pool buf !NULL before free Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 14/26] staging: ccree: handle end of sg list gracefully Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 15/26] staging: ccree: use Makefile to include PM code Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 16/26] staging: ccree: remove unused field Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 17/26] staging: ccree: use array for double buffer Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 18/26] staging: ccree: allocate hash bufs inside req ctx Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 19/26] staging: ccree: do not map bufs in ahash_init Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 20/26] staging: ccree: fix indentation of func params Gilad Ben-Yossef
2018-01-01 12:06 ` Gilad Ben-Yossef [this message]
2018-01-01 12:06 ` [PATCH 22/26] staging: ccree: put pointer next to var name Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 23/26] stating: ccree: fix allocation of void sized buf Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 24/26] staging: ccree: use a consistent file naming convention Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 25/26] staging: ccree: remove unneeded includes Gilad Ben-Yossef
2018-01-01 12:06 ` [PATCH 26/26] staging: ccree: update TODO Gilad Ben-Yossef
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