[PATCH 4/7] crypto: marvell: Moving the tdma chain out of mv_cesa_tdma_req
Romain Perier
romain.perier at free-electrons.com
Wed Jun 15 12:15:31 PDT 2016
Actually the only way to access the tdma chain is to use the 'req' union
from a mv_cesa_{ablkcipher,ahash}. This will soon become a problem if we
want to handle the TDMA chaining vs standard/non-DMA processing in a
generic way (with generic functions at the cesa.c level detecting
whether the request should be queued at the DMA level or not). Hence the
decision to move the chain field a the mv_cesa_req level at the expense
of adding 2 void * fields to all request contexts (including non-DMA
ones). To limit the overhead, we get rid of the type field, which can
now be deduced from the req->chain.first value.
Signed-off-by: Romain Perier <romain.perier at free-electrons.com>
---
drivers/crypto/marvell/cesa.c | 3 ++-
drivers/crypto/marvell/cesa.h | 31 +++++++++++++------------------
drivers/crypto/marvell/cipher.c | 40 ++++++++++++++++++++++------------------
drivers/crypto/marvell/hash.c | 36 +++++++++++++++---------------------
drivers/crypto/marvell/tdma.c | 8 ++++----
5 files changed, 56 insertions(+), 62 deletions(-)
diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c
index 93700cd..fe04d1b 100644
--- a/drivers/crypto/marvell/cesa.c
+++ b/drivers/crypto/marvell/cesa.c
@@ -111,7 +111,8 @@ static irqreturn_t mv_cesa_int(int irq, void *priv)
return ret;
}
-int mv_cesa_queue_req(struct crypto_async_request *req)
+int mv_cesa_queue_req(struct crypto_async_request *req,
+ struct mv_cesa_req *creq)
{
int ret;
int i;
diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h
index 74b84bd..158ff82 100644
--- a/drivers/crypto/marvell/cesa.h
+++ b/drivers/crypto/marvell/cesa.h
@@ -509,21 +509,11 @@ enum mv_cesa_req_type {
/**
* struct mv_cesa_req - CESA request
- * @type: request type
* @engine: engine associated with this request
+ * @chain: list of tdma descriptors associated with this request
*/
struct mv_cesa_req {
- enum mv_cesa_req_type type;
struct mv_cesa_engine *engine;
-};
-
-/**
- * struct mv_cesa_tdma_req - CESA TDMA request
- * @base: base information
- * @chain: TDMA chain
- */
-struct mv_cesa_tdma_req {
- struct mv_cesa_req base;
struct mv_cesa_tdma_chain chain;
};
@@ -562,7 +552,6 @@ struct mv_cesa_ablkcipher_std_req {
struct mv_cesa_ablkcipher_req {
union {
struct mv_cesa_req base;
- struct mv_cesa_tdma_req dma;
struct mv_cesa_ablkcipher_std_req std;
} req;
int src_nents;
@@ -587,7 +576,6 @@ struct mv_cesa_ahash_std_req {
* @cache_dma: DMA address of the cache buffer
*/
struct mv_cesa_ahash_dma_req {
- struct mv_cesa_tdma_req base;
u8 *padding;
dma_addr_t padding_dma;
u8 *cache;
@@ -625,6 +613,12 @@ struct mv_cesa_ahash_req {
extern struct mv_cesa_dev *cesa_dev;
+static inline enum mv_cesa_req_type
+mv_cesa_req_get_type(struct mv_cesa_req *req)
+{
+ return req->chain.first ? CESA_DMA_REQ : CESA_STD_REQ;
+}
+
static inline void mv_cesa_update_op_cfg(struct mv_cesa_op_ctx *op,
u32 cfg, u32 mask)
{
@@ -697,7 +691,8 @@ static inline bool mv_cesa_mac_op_is_first_frag(const struct mv_cesa_op_ctx *op)
CESA_SA_DESC_CFG_FIRST_FRAG;
}
-int mv_cesa_queue_req(struct crypto_async_request *req);
+int mv_cesa_queue_req(struct crypto_async_request *req,
+ struct mv_cesa_req *creq);
/*
* Helper function that indicates whether a crypto request needs to be
@@ -767,9 +762,9 @@ static inline bool mv_cesa_req_dma_iter_next_op(struct mv_cesa_dma_iter *iter)
return iter->op_len;
}
-void mv_cesa_dma_step(struct mv_cesa_tdma_req *dreq);
+void mv_cesa_dma_step(struct mv_cesa_req *dreq);
-static inline int mv_cesa_dma_process(struct mv_cesa_tdma_req *dreq,
+static inline int mv_cesa_dma_process(struct mv_cesa_req *dreq,
u32 status)
{
if (!(status & CESA_SA_INT_ACC0_IDMA_DONE))
@@ -781,10 +776,10 @@ static inline int mv_cesa_dma_process(struct mv_cesa_tdma_req *dreq,
return 0;
}
-void mv_cesa_dma_prepare(struct mv_cesa_tdma_req *dreq,
+void mv_cesa_dma_prepare(struct mv_cesa_req *dreq,
struct mv_cesa_engine *engine);
+void mv_cesa_dma_cleanup(struct mv_cesa_req *dreq);
-void mv_cesa_dma_cleanup(struct mv_cesa_tdma_req *dreq);
static inline void
mv_cesa_tdma_desc_iter_init(struct mv_cesa_tdma_chain *chain)
diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c
index f42620e..15d2c5a 100644
--- a/drivers/crypto/marvell/cipher.c
+++ b/drivers/crypto/marvell/cipher.c
@@ -70,14 +70,14 @@ mv_cesa_ablkcipher_dma_cleanup(struct ablkcipher_request *req)
dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
DMA_BIDIRECTIONAL);
}
- mv_cesa_dma_cleanup(&creq->req.dma);
+ mv_cesa_dma_cleanup(&creq->req.base);
}
static inline void mv_cesa_ablkcipher_cleanup(struct ablkcipher_request *req)
{
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
mv_cesa_ablkcipher_dma_cleanup(req);
}
@@ -141,19 +141,19 @@ static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
- if (creq->req.base.type == CESA_DMA_REQ) {
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ) {
int ret;
- struct mv_cesa_tdma_req *dreq;
+ struct mv_cesa_req *basereq;
unsigned int ivsize;
- ret = mv_cesa_dma_process(&creq->req.dma, status);
+ ret = mv_cesa_dma_process(&creq->req.base, status);
if (ret)
return ret;
- dreq = &creq->req.dma;
+ basereq = &creq->req.base;
ivsize = crypto_ablkcipher_ivsize(
crypto_ablkcipher_reqtfm(ablkreq));
- memcpy_fromio(ablkreq->info, dreq->chain.last->data, ivsize);
+ memcpy_fromio(ablkreq->info, basereq->chain.last->data, ivsize);
return ret;
}
return mv_cesa_ablkcipher_std_process(ablkreq, status);
@@ -164,8 +164,8 @@ static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
- if (creq->req.base.type == CESA_DMA_REQ)
- mv_cesa_dma_step(&creq->req.dma);
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
+ mv_cesa_dma_step(&creq->req.base);
else
mv_cesa_ablkcipher_std_step(ablkreq);
}
@@ -174,9 +174,9 @@ static inline void
mv_cesa_ablkcipher_dma_prepare(struct ablkcipher_request *req)
{
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
- struct mv_cesa_tdma_req *dreq = &creq->req.dma;
+ struct mv_cesa_req *dreq = &creq->req.base;
- mv_cesa_dma_prepare(dreq, dreq->base.engine);
+ mv_cesa_dma_prepare(dreq, dreq->engine);
}
static inline void
@@ -199,7 +199,7 @@ static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
creq->req.base.engine = engine;
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
mv_cesa_ablkcipher_dma_prepare(ablkreq);
else
mv_cesa_ablkcipher_std_prepare(ablkreq);
@@ -302,14 +302,13 @@ static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
GFP_KERNEL : GFP_ATOMIC;
- struct mv_cesa_tdma_req *dreq = &creq->req.dma;
+ struct mv_cesa_req *dreq = &creq->req.base;
struct mv_cesa_ablkcipher_dma_iter iter;
struct mv_cesa_tdma_chain chain;
bool skip_ctx = false;
int ret;
unsigned int ivsize;
- dreq->base.type = CESA_DMA_REQ;
dreq->chain.first = NULL;
dreq->chain.last = NULL;
@@ -397,10 +396,12 @@ mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
{
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
+ struct mv_cesa_req *basereq = &creq->req.base;
- sreq->base.type = CESA_STD_REQ;
sreq->op = *op_templ;
sreq->skip_ctx = false;
+ basereq->chain.first = NULL;
+ basereq->chain.last = NULL;
return 0;
}
@@ -442,6 +443,7 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
static int mv_cesa_des_op(struct ablkcipher_request *req,
struct mv_cesa_op_ctx *tmpl)
{
+ struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
int ret;
@@ -454,7 +456,7 @@ static int mv_cesa_des_op(struct ablkcipher_request *req,
if (ret)
return ret;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);
@@ -562,6 +564,7 @@ struct crypto_alg mv_cesa_cbc_des_alg = {
static int mv_cesa_des3_op(struct ablkcipher_request *req,
struct mv_cesa_op_ctx *tmpl)
{
+ struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
int ret;
@@ -574,7 +577,7 @@ static int mv_cesa_des3_op(struct ablkcipher_request *req,
if (ret)
return ret;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);
@@ -688,6 +691,7 @@ struct crypto_alg mv_cesa_cbc_des3_ede_alg = {
static int mv_cesa_aes_op(struct ablkcipher_request *req,
struct mv_cesa_op_ctx *tmpl)
{
+ struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
int ret, i;
u32 *key;
@@ -716,7 +720,7 @@ static int mv_cesa_aes_op(struct ablkcipher_request *req,
if (ret)
return ret;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);
diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c
index 0fae351..cc7c5b0 100644
--- a/drivers/crypto/marvell/hash.c
+++ b/drivers/crypto/marvell/hash.c
@@ -103,14 +103,14 @@ static inline void mv_cesa_ahash_dma_cleanup(struct ahash_request *req)
dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, DMA_TO_DEVICE);
mv_cesa_ahash_dma_free_cache(&creq->req.dma);
- mv_cesa_dma_cleanup(&creq->req.dma.base);
+ mv_cesa_dma_cleanup(&creq->req.base);
}
static inline void mv_cesa_ahash_cleanup(struct ahash_request *req)
{
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
mv_cesa_ahash_dma_cleanup(req);
}
@@ -118,7 +118,7 @@ static void mv_cesa_ahash_last_cleanup(struct ahash_request *req)
{
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
mv_cesa_ahash_dma_last_cleanup(req);
}
@@ -256,9 +256,9 @@ static int mv_cesa_ahash_std_process(struct ahash_request *req, u32 status)
static inline void mv_cesa_ahash_dma_prepare(struct ahash_request *req)
{
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
- struct mv_cesa_tdma_req *dreq = &creq->req.dma.base;
+ struct mv_cesa_req *dreq = &creq->req.base;
- mv_cesa_dma_prepare(dreq, dreq->base.engine);
+ mv_cesa_dma_prepare(dreq, dreq->engine);
}
static void mv_cesa_ahash_std_prepare(struct ahash_request *req)
@@ -277,8 +277,8 @@ static void mv_cesa_ahash_step(struct crypto_async_request *req)
struct ahash_request *ahashreq = ahash_request_cast(req);
struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
- if (creq->req.base.type == CESA_DMA_REQ)
- mv_cesa_dma_step(&creq->req.dma.base);
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
+ mv_cesa_dma_step(&creq->req.base);
else
mv_cesa_ahash_std_step(ahashreq);
}
@@ -291,8 +291,8 @@ static int mv_cesa_ahash_process(struct crypto_async_request *req, u32 status)
unsigned int digsize;
int ret, i;
- if (creq->req.base.type == CESA_DMA_REQ)
- ret = mv_cesa_dma_process(&creq->req.dma.base, status);
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
+ ret = mv_cesa_dma_process(&creq->req.base, status);
else
ret = mv_cesa_ahash_std_process(ahashreq, status);
@@ -340,7 +340,7 @@ static void mv_cesa_ahash_prepare(struct crypto_async_request *req,
creq->req.base.engine = engine;
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
mv_cesa_ahash_dma_prepare(ahashreq);
else
mv_cesa_ahash_std_prepare(ahashreq);
@@ -555,8 +555,7 @@ static int mv_cesa_ahash_dma_req_init(struct ahash_request *req)
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
GFP_KERNEL : GFP_ATOMIC;
- struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
- struct mv_cesa_tdma_req *dreq = &ahashdreq->base;
+ struct mv_cesa_req *dreq = &creq->req.base;
struct mv_cesa_ahash_dma_iter iter;
struct mv_cesa_op_ctx *op = NULL;
unsigned int frag_len;
@@ -662,11 +661,6 @@ static int mv_cesa_ahash_req_init(struct ahash_request *req, bool *cached)
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
int ret;
- if (cesa_dev->caps->has_tdma)
- creq->req.base.type = CESA_DMA_REQ;
- else
- creq->req.base.type = CESA_STD_REQ;
-
creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
if (creq->src_nents < 0) {
dev_err(cesa_dev->dev, "Invalid number of src SG");
@@ -680,7 +674,7 @@ static int mv_cesa_ahash_req_init(struct ahash_request *req, bool *cached)
if (*cached)
return 0;
- if (creq->req.base.type == CESA_DMA_REQ)
+ if (mv_cesa_req_get_type(&creq->req.base) == CESA_DMA_REQ)
ret = mv_cesa_ahash_dma_req_init(req);
return ret;
@@ -700,7 +694,7 @@ static int mv_cesa_ahash_update(struct ahash_request *req)
if (cached)
return 0;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);
@@ -725,7 +719,7 @@ static int mv_cesa_ahash_final(struct ahash_request *req)
if (cached)
return 0;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);
@@ -750,7 +744,7 @@ static int mv_cesa_ahash_finup(struct ahash_request *req)
if (cached)
return 0;
- ret = mv_cesa_queue_req(&req->base);
+ ret = mv_cesa_queue_req(&req->base, &creq->req.base);
if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);
diff --git a/drivers/crypto/marvell/tdma.c b/drivers/crypto/marvell/tdma.c
index 88c87be..9a424f9 100644
--- a/drivers/crypto/marvell/tdma.c
+++ b/drivers/crypto/marvell/tdma.c
@@ -37,9 +37,9 @@ bool mv_cesa_req_dma_iter_next_transfer(struct mv_cesa_dma_iter *iter,
return true;
}
-void mv_cesa_dma_step(struct mv_cesa_tdma_req *dreq)
+void mv_cesa_dma_step(struct mv_cesa_req *dreq)
{
- struct mv_cesa_engine *engine = dreq->base.engine;
+ struct mv_cesa_engine *engine = dreq->engine;
writel_relaxed(0, engine->regs + CESA_SA_CFG);
@@ -58,7 +58,7 @@ void mv_cesa_dma_step(struct mv_cesa_tdma_req *dreq)
writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
}
-void mv_cesa_dma_cleanup(struct mv_cesa_tdma_req *dreq)
+void mv_cesa_dma_cleanup(struct mv_cesa_req *dreq)
{
struct mv_cesa_tdma_desc *tdma;
@@ -81,7 +81,7 @@ void mv_cesa_dma_cleanup(struct mv_cesa_tdma_req *dreq)
dreq->chain.last = NULL;
}
-void mv_cesa_dma_prepare(struct mv_cesa_tdma_req *dreq,
+void mv_cesa_dma_prepare(struct mv_cesa_req *dreq,
struct mv_cesa_engine *engine)
{
struct mv_cesa_tdma_desc *tdma;
--
2.7.4
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