* [PATCH v2 1/3] dmaengine: Add support for new feature CRC32C computations
@ 2015-11-16 9:12 rsahu
0 siblings, 0 replies; 3+ messages in thread
From: rsahu @ 2015-11-16 9:12 UTC (permalink / raw)
To: herbert, davem, vinod.koul, dan.j.williams
Cc: dmaengine, arnd, linux-kernel, devicetree, linux-arm-kernel, jcm,
patches, linux-crypto, Rameshwar Prasad Sahu
From: Rameshwar Prasad Sahu <rsahu@apm.com>
This patch adds support for new feature CRC32C computations in
dmaengine framework.
Signed-of-by: Rameshwar Prasad Sahu<rsahu@apm.com>
---
Documentation/dmaengine/provider.txt | 3 +++
drivers/dma/dmaengine.c | 2 ++
include/linux/dmaengine.h | 13 +++++++++++++
3 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/Documentation/dmaengine/provider.txt b/Documentation/dmaengine/provider.txt
index 67d4ce4..2399d6f 100644
--- a/Documentation/dmaengine/provider.txt
+++ b/Documentation/dmaengine/provider.txt
@@ -224,6 +224,9 @@ Currently, the types available are:
want to transfer a portion of uncompressed data directly to the
display to print it
+ * DMA_CRC32C
+ - The device is able to perform CRC32C computations
+
These various types will also affect how the source and destination
addresses change over time.
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 09479d4..8cd0365 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -865,6 +865,8 @@ int dma_async_device_register(struct dma_device *device)
!device->device_prep_dma_cyclic);
BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
!device->device_prep_interleaved_dma);
+ BUG_ON(dma_has_cap(DMA_CRC32C, device->cap_mask) &&
+ !device->device_prep_dma_crc32c);
BUG_ON(!device->device_tx_status);
BUG_ON(!device->device_issue_pending);
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 7ea9184..7108d7c 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -74,6 +74,7 @@ enum dma_transaction_type {
DMA_SLAVE,
DMA_CYCLIC,
DMA_INTERLEAVE,
+ DMA_CRC32C,
/* last transaction type for creation of the capabilities mask */
DMA_TX_TYPE_END,
};
@@ -645,6 +646,7 @@ enum dmaengine_alignment {
* The function takes a buffer of size buf_len. The callback function will
* be called after period_len bytes have been transferred.
* @device_prep_interleaved_dma: Transfer expression in a generic way.
+ * @device_prep_dma_crc32c: prepares a crc32c operation
* @device_config: Pushes a new configuration to a channel, return 0 or an error
* code
* @device_pause: Pauses any transfer happening on a channel. Returns
@@ -727,6 +729,9 @@ struct dma_device {
struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
struct dma_chan *chan, struct dma_interleaved_template *xt,
unsigned long flags);
+ struct dma_async_tx_descriptor *(*device_prep_dma_crc32c)(
+ struct dma_chan *chan, struct scatterlist *src_sg, size_t len,
+ unsigned int seed, u8 *result, unsigned long flags);
int (*device_config)(struct dma_chan *chan,
struct dma_slave_config *config);
@@ -824,6 +829,14 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
src_sg, src_nents, flags);
}
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_crc3c(
+ struct dma_chan *chan, struct scatterlist *src_sg,
+ size_t len, unsigned int seed, u8 *result, unsigned long flags)
+{
+ return chan->device->device_prep_dma_crc32c(chan, src_sg, len,
+ seed, result, flags);
+}
+
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
if (chan->device->device_terminate_all)
--
1.7.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH v2 1/3] dmaengine: Add support for new feature CRC32C computations
@ 2015-11-16 9:08 rsahu
0 siblings, 0 replies; 3+ messages in thread
From: rsahu @ 2015-11-16 9:08 UTC (permalink / raw)
To: vinod.koul, dan.j.williams
Cc: dmaengine, arnd, linux-kernel, devicetree, linux-arm-kernel, jcm,
patches, Rameshwar Prasad Sahu
From: Rameshwar Prasad Sahu <rsahu@apm.com>
This patch adds support for new feature CRC32C computations in
dmaengine framework.
Signed-of-by: Rameshwar Prasad Sahu<rsahu@apm.com>
---
Documentation/dmaengine/provider.txt | 3 +++
drivers/dma/dmaengine.c | 2 ++
include/linux/dmaengine.h | 13 +++++++++++++
3 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/Documentation/dmaengine/provider.txt b/Documentation/dmaengine/provider.txt
index 67d4ce4..2399d6f 100644
--- a/Documentation/dmaengine/provider.txt
+++ b/Documentation/dmaengine/provider.txt
@@ -224,6 +224,9 @@ Currently, the types available are:
want to transfer a portion of uncompressed data directly to the
display to print it
+ * DMA_CRC32C
+ - The device is able to perform CRC32C computations
+
These various types will also affect how the source and destination
addresses change over time.
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 09479d4..8cd0365 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -865,6 +865,8 @@ int dma_async_device_register(struct dma_device *device)
!device->device_prep_dma_cyclic);
BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
!device->device_prep_interleaved_dma);
+ BUG_ON(dma_has_cap(DMA_CRC32C, device->cap_mask) &&
+ !device->device_prep_dma_crc32c);
BUG_ON(!device->device_tx_status);
BUG_ON(!device->device_issue_pending);
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 7ea9184..7108d7c 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -74,6 +74,7 @@ enum dma_transaction_type {
DMA_SLAVE,
DMA_CYCLIC,
DMA_INTERLEAVE,
+ DMA_CRC32C,
/* last transaction type for creation of the capabilities mask */
DMA_TX_TYPE_END,
};
@@ -645,6 +646,7 @@ enum dmaengine_alignment {
* The function takes a buffer of size buf_len. The callback function will
* be called after period_len bytes have been transferred.
* @device_prep_interleaved_dma: Transfer expression in a generic way.
+ * @device_prep_dma_crc32c: prepares a crc32c operation
* @device_config: Pushes a new configuration to a channel, return 0 or an error
* code
* @device_pause: Pauses any transfer happening on a channel. Returns
@@ -727,6 +729,9 @@ struct dma_device {
struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
struct dma_chan *chan, struct dma_interleaved_template *xt,
unsigned long flags);
+ struct dma_async_tx_descriptor *(*device_prep_dma_crc32c)(
+ struct dma_chan *chan, struct scatterlist *src_sg, size_t len,
+ unsigned int seed, u8 *result, unsigned long flags);
int (*device_config)(struct dma_chan *chan,
struct dma_slave_config *config);
@@ -824,6 +829,14 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
src_sg, src_nents, flags);
}
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_crc3c(
+ struct dma_chan *chan, struct scatterlist *src_sg,
+ size_t len, unsigned int seed, u8 *result, unsigned long flags)
+{
+ return chan->device->device_prep_dma_crc32c(chan, src_sg, len,
+ seed, result, flags);
+}
+
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
if (chan->device->device_terminate_all)
--
1.7.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver
@ 2015-11-07 16:37 Rameshwar Prasad Sahu
[not found] ` <1446914226-23402-1-git-send-email-rsahu-qTEPVZfXA3Y@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Rameshwar Prasad Sahu @ 2015-11-07 16:37 UTC (permalink / raw)
To: vinod.koul, dan.j.williams, herbert, davem
Cc: linux-crypto, dmaengine, arnd, linux-kernel, devicetree,
linux-arm-kernel, jcm, kgondkar, patches, Rameshwar Prasad Sahu
This patch implements support for APM X-Gene SoC CRC32C h/w accelerator driver
and adds CRC32C computations support in dmaengine framework. APM X-Gene SoC has
DMA engine capable of performing CRC32C computations.
v2 changes:
1. Added helper function in dmaengine framework
2. Documented CRC32C support in Documentations/dmaengine/provider.txt
3. Fixed algo name
4. Fixed coding style issues
Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
---
Rameshwar Prasad Sahu (3):
dmaengine: Add support for new feature CRC32C computations
dmaengine: xgene-dma: Add support for CRC32C computations via DMA
engine
Crypto: Add support for APM X-Gene SoC CRC32C h/w accelerator driver
Documentation/dmaengine/provider.txt | 3 +
drivers/crypto/Kconfig | 8 +
drivers/crypto/Makefile | 1 +
drivers/crypto/xgene-crc32c.c | 234 +++++++++++++++++++++++++
drivers/dma/dmaengine.c | 2 +
drivers/dma/xgene-dma.c | 314 ++++++++++++++++++++++++++++++++--
include/linux/dmaengine.h | 13 ++
7 files changed, 560 insertions(+), 15 deletions(-)
create mode 100755 drivers/crypto/xgene-crc32c.c
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-11-16 9:08 rsahu
2015-11-07 16:37 [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Rameshwar Prasad Sahu
[not found] ` <1446914226-23402-1-git-send-email-rsahu-qTEPVZfXA3Y@public.gmane.org>
2015-11-07 16:37 ` [PATCH v2 1/3] dmaengine: Add support for new feature CRC32C computations Rameshwar Prasad Sahu
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