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Groups > linux.kernel > #1279680 > unrolled thread
| Started by | Rameshwar Sahu <rsahu@apm.com> |
|---|---|
| First post | 2015-11-30 09:40 +0100 |
| Last post | 2015-11-30 09:50 +0100 |
| Articles | 5 — 2 participants |
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Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Rameshwar Sahu <rsahu@apm.com> - 2015-11-30 09:40 +0100
Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Rameshwar Sahu <rsahu@apm.com> - 2015-11-30 09:50 +0100
Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Herbert Xu <herbert@gondor.apana.org.au> - 2015-11-30 10:00 +0100
Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Rameshwar Sahu <rsahu@apm.com> - 2015-11-30 10:00 +0100
Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver Herbert Xu <herbert@gondor.apana.org.au> - 2015-11-30 09:50 +0100
| From | Rameshwar Sahu <rsahu@apm.com> |
|---|---|
| Date | 2015-11-30 09:40 +0100 |
| Subject | Re: [PATCH v2 0/3] dmaengine: Add supports for APM X-Gene SoC CRC32C accerlerator driver |
| Message-ID | <qAsa6-1cU-23@gated-at.bofh.it> |
On Mon, Nov 16, 2015 at 2:42 PM, <rsahu@apm.com> wrote: > From: Rameshwar Prasad Sahu <rsahu@apm.com> > > 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 Any Comments on above patchset ?? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Rameshwar Sahu <rsahu@apm.com> |
|---|---|
| Date | 2015-11-30 09:50 +0100 |
| Message-ID | <qAsjL-1hf-1@gated-at.bofh.it> |
| In reply to | #1279680 |
Hi Herbert, On Mon, Nov 30, 2015 at 2:09 PM, Herbert Xu <herbert@gondor.apana.org.au> wrote: > On Mon, Nov 30, 2015 at 02:06:03PM +0530, Rameshwar Sahu wrote: >> On Mon, Nov 16, 2015 at 2:42 PM, <rsahu@apm.com> wrote: >> > From: Rameshwar Prasad Sahu <rsahu@apm.com> >> > >> > 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 >> >> Any Comments on above patchset ?? > > The main user of crc32c is lib/libcrc32c.c. Unfortunately it is > entire synchronous so it won't be able to use your crc32c driver > at all. This is asynchronous implementation of the crc32c, mainly for offloading the computations, So client (who want to use it) can call it as like other async crypto algos available in linux/crypto, so they have frame the layer on top of this. > > So who is going to be using this? One of our client is using this layer for offloading the crc32c to our dmaengine hw. > > Cheers, > -- > Email: Herbert Xu <herbert@gondor.apana.org.au> > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Herbert Xu <herbert@gondor.apana.org.au> |
|---|---|
| Date | 2015-11-30 10:00 +0100 |
| Message-ID | <qAstt-1kv-19@gated-at.bofh.it> |
| In reply to | #1279684 |
On Mon, Nov 30, 2015 at 02:19:33PM +0530, Rameshwar Sahu wrote: > > One of our client is using this layer for offloading the crc32c to our > dmaengine hw. Is this going to be merged into the kernel? Cheers, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Rameshwar Sahu <rsahu@apm.com> |
|---|---|
| Date | 2015-11-30 10:00 +0100 |
| Message-ID | <qAstt-1kv-17@gated-at.bofh.it> |
| In reply to | #1279701 |
Hi Herbert, On Mon, Nov 30, 2015 at 2:20 PM, Herbert Xu <herbert@gondor.apana.org.au> wrote: > On Mon, Nov 30, 2015 at 02:19:33PM +0530, Rameshwar Sahu wrote: >> >> One of our client is using this layer for offloading the crc32c to our >> dmaengine hw. > > Is this going to be merged into the kernel? I am not sure about it, but as what I thought is Linux kernel supports many algos in async mode and sync mode, later client has to take care which one they are going to use. Any way this offload implementation is specific to Applied Micro X-Gene SoC, where we have such a dmaengine can do CRC32c. > > Cheers, > -- > Email: Herbert Xu <herbert@gondor.apana.org.au> > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Herbert Xu <herbert@gondor.apana.org.au> |
|---|---|
| Date | 2015-11-30 09:50 +0100 |
| Message-ID | <qAsjL-1hf-3@gated-at.bofh.it> |
| In reply to | #1279680 |
On Mon, Nov 30, 2015 at 02:06:03PM +0530, Rameshwar Sahu wrote: > On Mon, Nov 16, 2015 at 2:42 PM, <rsahu@apm.com> wrote: > > From: Rameshwar Prasad Sahu <rsahu@apm.com> > > > > 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 > > Any Comments on above patchset ?? The main user of crc32c is lib/libcrc32c.c. Unfortunately it is entire synchronous so it won't be able to use your crc32c driver at all. So who is going to be using this? Cheers, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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