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Re: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C calculation via DMA engine

Started byVinod Koul <vinod.koul@intel.com>
First post2015-08-20 07:40 +0200
Last post2015-08-20 09:20 +0200
Articles 3 — 2 participants

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  Re: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C  calculation via DMA engine Vinod Koul <vinod.koul@intel.com> - 2015-08-20 07:40 +0200
    Re: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C  calculation via DMA engine Rameshwar Sahu <rsahu@apm.com> - 2015-08-20 09:00 +0200
      Re: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C  calculation via DMA engine Vinod Koul <vinod.koul@intel.com> - 2015-08-20 09:20 +0200

#1210151 — Re: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C calculation via DMA engine

FromVinod Koul <vinod.koul@intel.com>
Date2015-08-20 07:40 +0200
SubjectRe: [PATCH v1 2/4] dmaengine: xgene-dma: Add support for CRC32C calculation via DMA engine
Message-ID<pZqJY-3Q7-3@gated-at.bofh.it>
On Thu, Jul 30, 2015 at 05:41:06PM +0530, Rameshwar Prasad Sahu wrote:
> +	/* Invalidate unused source address field */
> +	for (; i < 4; i++)
> +		xgene_dma_invalidate_buffer(xgene_dma_lookup_ext8(desc2, i));
> +
> +	/* Check whether requested buffer processed */
> +	if (nbytes) {
> +		chan_err(chan, "Src count crossed maximum limit\n");
> +		return -EINVAL;
no cleanup ?

> +struct dma_async_tx_descriptor *xgene_dma_prep_flyby(
> +	struct xgene_dma_chan *chan, struct scatterlist *src_sg,
> +	size_t len, u32 seed, u8 *result, unsigned long flags, u8 opcode)
please fix style here

> +struct dma_async_tx_descriptor *xgene_dma_prep_crc32c(
> +	struct dma_chan *dchan, struct scatterlist *src_sg,
> +	size_t len, u32 seed, u8 *result, unsigned long flags)
here too

> @@ -1309,8 +1512,13 @@ static void xgene_dma_setup_ring(struct xgene_dma_ring *ring)
>  		  ring->pdma->csr_ring + XGENE_DMA_RING_ID);
> 
>  	/* Set DMA ring buffer */
> -	iowrite32(XGENE_DMA_RING_ID_BUF_SETUP(ring->num),
> -		  ring->pdma->csr_ring + XGENE_DMA_RING_ID_BUF);
> +	ring_id_buf = XGENE_DMA_RING_ID_BUF_SETUP(ring->num);
> +
> +	if (ring->is_bufpool)
> +		ring_id_buf |= XGENE_DMA_RING_IS_BUFPOOL;
> +
> +	iowrite32(ring_id_buf, ring->pdma->csr_ring +
> +		  XGENE_DMA_RING_ID_BUF);
pls fix style here

-- 
~Vinod
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#1210203

FromRameshwar Sahu <rsahu@apm.com>
Date2015-08-20 09:00 +0200
Message-ID<pZrZo-5EL-19@gated-at.bofh.it>
In reply to#1210151
Hi Vinod,

On Thu, Aug 20, 2015 at 11:10 AM, Vinod Koul <vinod.koul@intel.com> wrote:
> On Thu, Jul 30, 2015 at 05:41:06PM +0530, Rameshwar Prasad Sahu wrote:
>> +     /* Invalidate unused source address field */
>> +     for (; i < 4; i++)
>> +             xgene_dma_invalidate_buffer(xgene_dma_lookup_ext8(desc2, i));
>> +
>> +     /* Check whether requested buffer processed */
>> +     if (nbytes) {
>> +             chan_err(chan, "Src count crossed maximum limit\n");
>> +             return -EINVAL;
> no cleanup ?
Here not required, cleanup I am doing in parent function from where
this function is getting called in case of failure.
>
>> +struct dma_async_tx_descriptor *xgene_dma_prep_flyby(
>> +     struct xgene_dma_chan *chan, struct scatterlist *src_sg,
>> +     size_t len, u32 seed, u8 *result, unsigned long flags, u8 opcode)
> please fix style here

Could you explain me What kind of coding style you would like here ??
>
>> +struct dma_async_tx_descriptor *xgene_dma_prep_crc32c(
>> +     struct dma_chan *dchan, struct scatterlist *src_sg,
>> +     size_t len, u32 seed, u8 *result, unsigned long flags)
> here too
>
>> @@ -1309,8 +1512,13 @@ static void xgene_dma_setup_ring(struct xgene_dma_ring *ring)
>>                 ring->pdma->csr_ring + XGENE_DMA_RING_ID);
>>
>>       /* Set DMA ring buffer */
>> -     iowrite32(XGENE_DMA_RING_ID_BUF_SETUP(ring->num),
>> -               ring->pdma->csr_ring + XGENE_DMA_RING_ID_BUF);
>> +     ring_id_buf = XGENE_DMA_RING_ID_BUF_SETUP(ring->num);
>> +
>> +     if (ring->is_bufpool)
>> +             ring_id_buf |= XGENE_DMA_RING_IS_BUFPOOL;
>> +
>> +     iowrite32(ring_id_buf, ring->pdma->csr_ring +
>> +               XGENE_DMA_RING_ID_BUF);
> pls fix style here
I didn't see any alignment issue here, just follow checkpatch that
argument should start just after "function(" in next line also.
>
> --
> ~Vinod
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#1210224

FromVinod Koul <vinod.koul@intel.com>
Date2015-08-20 09:20 +0200
Message-ID<pZsiK-6gT-13@gated-at.bofh.it>
In reply to#1210203
On Thu, Aug 20, 2015 at 12:23:50PM +0530, Rameshwar Sahu wrote:
> Hi Vinod,
> 
> On Thu, Aug 20, 2015 at 11:10 AM, Vinod Koul <vinod.koul@intel.com> wrote:
> > On Thu, Jul 30, 2015 at 05:41:06PM +0530, Rameshwar Prasad Sahu wrote:
> >> +     /* Invalidate unused source address field */
> >> +     for (; i < 4; i++)
> >> +             xgene_dma_invalidate_buffer(xgene_dma_lookup_ext8(desc2, i));
> >> +
> >> +     /* Check whether requested buffer processed */
> >> +     if (nbytes) {
> >> +             chan_err(chan, "Src count crossed maximum limit\n");
> >> +             return -EINVAL;
> > no cleanup ?
> Here not required, cleanup I am doing in parent function from where
> this function is getting called in case of failure.
> >
> >> +struct dma_async_tx_descriptor *xgene_dma_prep_flyby(
> >> +     struct xgene_dma_chan *chan, struct scatterlist *src_sg,
> >> +     size_t len, u32 seed, u8 *result, unsigned long flags, u8 opcode)
> > please fix style here
> 
> Could you explain me What kind of coding style you would like here ??

See CodingStyle Chapter 2

-- 
~Vinod

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