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Message-ID: <CAP=VYLp0ACstgS9PULAnowpAPOGVKVKFbFg0zVCX4CKeMTAwnA@mail.gmail.com>
Date: Thu, 22 Mar 2012 16:18:47 -0400
From: Paul Gortmaker <paul.gortmaker@...driver.com>
To: Alexandre Bounine <alexandre.bounine@....com>
Cc: vinod.koul@...el.com, dan.j.williams@...el.com,
linux@....linux.org.uk, linux-kernel@...r.kernel.org,
jaswinder.singh@...aro.org, linus.walleij@...ricsson.com,
leoli@...escale.com, zw@...kernel.org,
STEricsson_nomadik_linux@...t.st.com, ben-linux@...ff.org,
kgene.kim@...sung.com, mchehab@...radead.org,
ludovic.desroches@...el.com, cjb@...top.org, g.liakhovetski@....de,
ian@...menth.co.uk, dwmw2@...radead.org, grant.likely@...retlab.ca,
alan@...ux.intel.com, balbi@...com, FlorianSchandinat@....de,
perex@...ex.cz, tiwai@...e.de, viresh.kumar@...com,
baohua.song@....com, srinidhi.kasagar@...ricsson.com,
linux-next@...r.kernel.org
Subject: Re: [PATCH 2/2 V2] dmaengine: add context parameter to prep_slave_sg
and prep_dma_cyclic
On Thu, Mar 8, 2012 at 3:35 PM, Alexandre Bounine
<alexandre.bounine@....com> wrote:
> Add context parameter to device_prep_slave_sg() and device_prep_dma_cyclic()
> interfaces to allow passing client/target specific information associated
> with the data transfer.
> Modify all affected DMA engine drivers.
Hi Alexandre,
Can you have a look at this failure in linux-next:
http://kisskb.ellerman.id.au/kisskb/buildresult/5933610/
sound/soc/soc-dmaengine-pcm.c:149:3: error: too few arguments to
function 'chan->device->device_prep_dma_cyclic'
make[3]: *** [sound/soc/soc-dmaengine-pcm.o] Error 1
I think it is caused by this commit.
Thanks,
Paul.
>
> Signed-off-by: Alexandre Bounine <alexandre.bounine@....com>
> ---
> drivers/dma/amba-pl08x.c | 2 +-
> drivers/dma/at_hdmac.c | 7 +++++--
> drivers/dma/coh901318.c | 2 +-
> drivers/dma/dw_dmac.c | 2 +-
> drivers/dma/ep93xx_dma.c | 6 ++++--
> drivers/dma/fsldma.c | 4 +++-
> drivers/dma/imx-dma.c | 5 +++--
> drivers/dma/imx-sdma.c | 5 +++--
> drivers/dma/intel_mid_dma.c | 3 ++-
> drivers/dma/ipu/ipu_idmac.c | 3 ++-
> drivers/dma/mxs-dma.c | 5 +++--
> drivers/dma/pch_dma.c | 3 ++-
> drivers/dma/pl330.c | 5 +++--
> drivers/dma/shdma.c | 3 ++-
> drivers/dma/sirf-dma.c | 2 +-
> drivers/dma/ste_dma40.c | 5 +++--
> drivers/dma/timb_dma.c | 3 ++-
> drivers/dma/txx9dmac.c | 2 +-
> include/linux/dmaengine.h | 12 +++++++-----
> 19 files changed, 49 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
> index 8a28158..776f9e2 100644
> --- a/drivers/dma/amba-pl08x.c
> +++ b/drivers/dma/amba-pl08x.c
> @@ -1326,7 +1326,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy(
> static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
> struct pl08x_driver_data *pl08x = plchan->host;
> diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
> index f4aed5f..e1a1d42 100644
> --- a/drivers/dma/at_hdmac.c
> +++ b/drivers/dma/at_hdmac.c
> @@ -659,11 +659,12 @@ err_desc_get:
> * @sg_len: number of entries in @scatterlist
> * @direction: DMA direction
> * @flags: tx descriptor status flags
> + * @context: transaction context (ignored)
> */
> static struct dma_async_tx_descriptor *
> atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct at_dma_chan *atchan = to_at_dma_chan(chan);
> struct at_dma_slave *atslave = chan->private;
> @@ -860,10 +861,12 @@ atc_dma_cyclic_fill_desc(struct at_dma_slave *atslave, struct at_desc *desc,
> * @buf_len: total number of bytes for the entire buffer
> * @period_len: number of bytes for each period
> * @direction: transfer direction, to or from device
> + * @context: transfer context (ignored)
> */
> static struct dma_async_tx_descriptor *
> atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
> - size_t period_len, enum dma_transfer_direction direction)
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context)
> {
> struct at_dma_chan *atchan = to_at_dma_chan(chan);
> struct at_dma_slave *atslave = chan->private;
> diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
> index d65a718..f42b54e 100644
> --- a/drivers/dma/coh901318.c
> +++ b/drivers/dma/coh901318.c
> @@ -1035,7 +1035,7 @@ coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
> static struct dma_async_tx_descriptor *
> coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct coh901318_chan *cohc = to_coh901318_chan(chan);
> struct coh901318_lli *lli;
> diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
> index 9b592b0..058bddf 100644
> --- a/drivers/dma/dw_dmac.c
> +++ b/drivers/dma/dw_dmac.c
> @@ -731,7 +731,7 @@ err_desc_get:
> static struct dma_async_tx_descriptor *
> dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
> struct dw_dma_slave *dws = chan->private;
> diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
> index 59e7a96..c79de61 100644
> --- a/drivers/dma/ep93xx_dma.c
> +++ b/drivers/dma/ep93xx_dma.c
> @@ -983,13 +983,14 @@ fail:
> * @sg_len: number of entries in @sgl
> * @dir: direction of tha DMA transfer
> * @flags: flags for the descriptor
> + * @context: operation context (ignored)
> *
> * Returns a valid DMA descriptor or %NULL in case of failure.
> */
> static struct dma_async_tx_descriptor *
> ep93xx_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction dir,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
> struct ep93xx_dma_desc *desc, *first;
> @@ -1056,6 +1057,7 @@ fail:
> * @buf_len: length of the buffer (in bytes)
> * @period_len: lenght of a single period
> * @dir: direction of the operation
> + * @context: operation context (ignored)
> *
> * Prepares a descriptor for cyclic DMA operation. This means that once the
> * descriptor is submitted, we will be submitting in a @period_len sized
> @@ -1068,7 +1070,7 @@ fail:
> static struct dma_async_tx_descriptor *
> ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
> size_t buf_len, size_t period_len,
> - enum dma_transfer_direction dir)
> + enum dma_transfer_direction dir, void *context)
> {
> struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
> struct ep93xx_dma_desc *desc, *first;
> diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
> index b98070c..51d33e5 100644
> --- a/drivers/dma/fsldma.c
> +++ b/drivers/dma/fsldma.c
> @@ -765,6 +765,7 @@ fail:
> * @sg_len: number of entries in @scatterlist
> * @direction: DMA direction
> * @flags: DMAEngine flags
> + * @context: transaction context (ignored)
> *
> * Prepare a set of descriptors for a DMA_SLAVE transaction. Following the
> * DMA_SLAVE API, this gets the device-specific information from the
> @@ -772,7 +773,8 @@ fail:
> */
> static struct dma_async_tx_descriptor *fsl_dma_prep_slave_sg(
> struct dma_chan *dchan, struct scatterlist *sgl, unsigned int sg_len,
> - enum dma_transfer_direction direction, unsigned long flags)
> + enum dma_transfer_direction direction, unsigned long flags,
> + void *context)
> {
> /*
> * This operation is not supported on the Freescale DMA controller
> diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
> index e4383ee..42d5dc5 100644
> --- a/drivers/dma/imx-dma.c
> +++ b/drivers/dma/imx-dma.c
> @@ -225,7 +225,7 @@ static void imxdma_free_chan_resources(struct dma_chan *chan)
> static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
> struct scatterlist *sg;
> @@ -271,7 +271,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
>
> static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
> struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
> - size_t period_len, enum dma_transfer_direction direction)
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context)
> {
> struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
> struct imxdma_engine *imxdma = imxdmac->imxdma;
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 8bc5acf..5313946 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -917,7 +917,7 @@ static void sdma_free_chan_resources(struct dma_chan *chan)
> static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct sdma_channel *sdmac = to_sdma_chan(chan);
> struct sdma_engine *sdma = sdmac->sdma;
> @@ -1015,7 +1015,8 @@ err_out:
>
> static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
> struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
> - size_t period_len, enum dma_transfer_direction direction)
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context)
> {
> struct sdma_channel *sdmac = to_sdma_chan(chan);
> struct sdma_engine *sdma = sdmac->sdma;
> diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
> index 74f70aa..2a202e5 100644
> --- a/drivers/dma/intel_mid_dma.c
> +++ b/drivers/dma/intel_mid_dma.c
> @@ -732,13 +732,14 @@ err_desc_get:
> * @sg_len: length of sg txn
> * @direction: DMA transfer dirtn
> * @flags: DMA flags
> + * @context: transfer context (ignored)
> *
> * Prepares LLI based periphral transfer
> */
> static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct intel_mid_dma_chan *midc = NULL;
> struct intel_mid_dma_slave *mids = NULL;
> diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
> index 6212b16..aadd57c 100644
> --- a/drivers/dma/ipu/ipu_idmac.c
> +++ b/drivers/dma/ipu/ipu_idmac.c
> @@ -1341,7 +1341,8 @@ static void ipu_gc_tasklet(unsigned long arg)
> /* Allocate and initialise a transfer descriptor. */
> static struct dma_async_tx_descriptor *idmac_prep_slave_sg(struct dma_chan *chan,
> struct scatterlist *sgl, unsigned int sg_len,
> - enum dma_transfer_direction direction, unsigned long tx_flags)
> + enum dma_transfer_direction direction, unsigned long tx_flags,
> + void *context)
> {
> struct idmac_channel *ichan = to_idmac_chan(chan);
> struct idmac_tx_desc *desc = NULL;
> diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
> index b06cd4c..3e65974 100644
> --- a/drivers/dma/mxs-dma.c
> +++ b/drivers/dma/mxs-dma.c
> @@ -352,7 +352,7 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
> static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long append)
> + unsigned long append, void *context)
> {
> struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
> struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
> @@ -447,7 +447,8 @@ err_out:
>
> static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic(
> struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
> - size_t period_len, enum dma_transfer_direction direction)
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context)
> {
> struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
> struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
> diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
> index 823f581..d0a334d 100644
> --- a/drivers/dma/pch_dma.c
> +++ b/drivers/dma/pch_dma.c
> @@ -607,7 +607,8 @@ static void pd_issue_pending(struct dma_chan *chan)
>
> static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan,
> struct scatterlist *sgl, unsigned int sg_len,
> - enum dma_transfer_direction direction, unsigned long flags)
> + enum dma_transfer_direction direction, unsigned long flags,
> + void *context)
> {
> struct pch_dma_chan *pd_chan = to_pd_chan(chan);
> struct pch_dma_slave *pd_slave = chan->private;
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index b8ec03e..1e8dee6 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -621,7 +621,8 @@ static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len)
>
> static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
> struct dma_chan *chan, dma_addr_t dma_addr, size_t len,
> - size_t period_len, enum dma_transfer_direction direction)
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context)
> {
> struct dma_pl330_desc *desc;
> struct dma_pl330_chan *pch = to_pchan(chan);
> @@ -711,7 +712,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
> static struct dma_async_tx_descriptor *
> pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flg)
> + unsigned long flg, void *context)
> {
> struct dma_pl330_desc *first, *desc = NULL;
> struct dma_pl330_chan *pch = to_pchan(chan);
> diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
> index 812fd76..6b94f22 100644
> --- a/drivers/dma/shdma.c
> +++ b/drivers/dma/shdma.c
> @@ -673,7 +673,8 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_memcpy(
>
> static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
> struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len,
> - enum dma_transfer_direction direction, unsigned long flags)
> + enum dma_transfer_direction direction, unsigned long flags,
> + void *context)
> {
> struct sh_dmae_slave *param;
> struct sh_dmae_chan *sh_chan;
> diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
> index 2333810..b899a86 100644
> --- a/drivers/dma/sirf-dma.c
> +++ b/drivers/dma/sirf-dma.c
> @@ -497,7 +497,7 @@ err_dir:
> static struct dma_async_tx_descriptor *
> sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr,
> size_t buf_len, size_t period_len,
> - enum dma_transfer_direction direction)
> + enum dma_transfer_direction direction, void *context)
> {
> struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
> struct sirfsoc_dma_desc *sdesc = NULL;
> diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
> index cc5ecbc..3cbf78e 100644
> --- a/drivers/dma/ste_dma40.c
> +++ b/drivers/dma/ste_dma40.c
> @@ -2299,7 +2299,8 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
> struct scatterlist *sgl,
> unsigned int sg_len,
> enum dma_transfer_direction direction,
> - unsigned long dma_flags)
> + unsigned long dma_flags,
> + void *context)
> {
> if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
> return NULL;
> @@ -2310,7 +2311,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
> static struct dma_async_tx_descriptor *
> dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
> size_t buf_len, size_t period_len,
> - enum dma_transfer_direction direction)
> + enum dma_transfer_direction direction, void *context)
> {
> unsigned int periods = buf_len / period_len;
> struct dma_async_tx_descriptor *txd;
> diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c
> index a6f9c16..a4c61ed 100644
> --- a/drivers/dma/timb_dma.c
> +++ b/drivers/dma/timb_dma.c
> @@ -558,7 +558,8 @@ static void td_issue_pending(struct dma_chan *chan)
>
> static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan,
> struct scatterlist *sgl, unsigned int sg_len,
> - enum dma_transfer_direction direction, unsigned long flags)
> + enum dma_transfer_direction direction, unsigned long flags,
> + void *context)
> {
> struct timb_dma_chan *td_chan =
> container_of(chan, struct timb_dma_chan, chan);
> diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
> index 6122c36..fa66ebb 100644
> --- a/drivers/dma/txx9dmac.c
> +++ b/drivers/dma/txx9dmac.c
> @@ -846,7 +846,7 @@ txx9dmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
> static struct dma_async_tx_descriptor *
> txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags)
> + unsigned long flags, void *context)
> {
> struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
> struct txx9dmac_dev *ddev = dc->ddev;
> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
> index 6e88f09..9a8140f 100644
> --- a/include/linux/dmaengine.h
> +++ b/include/linux/dmaengine.h
> @@ -575,10 +575,11 @@ struct dma_device {
> struct dma_async_tx_descriptor *(*device_prep_slave_sg)(
> struct dma_chan *chan, struct scatterlist *sgl,
> unsigned int sg_len, enum dma_transfer_direction direction,
> - unsigned long flags);
> + unsigned long flags, void *context);
> struct dma_async_tx_descriptor *(*device_prep_dma_cyclic)(
> struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
> - size_t period_len, enum dma_transfer_direction direction);
> + size_t period_len, enum dma_transfer_direction direction,
> + void *context);
> struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
> struct dma_chan *chan, struct dma_interleaved_template *xt,
> unsigned long flags);
> @@ -612,7 +613,8 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
> struct scatterlist sg;
> sg_init_one(&sg, buf, len);
>
> - return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags);
> + return chan->device->device_prep_slave_sg(chan, &sg, 1,
> + dir, flags, NULL);
> }
>
> static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg(
> @@ -620,7 +622,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg(
> enum dma_transfer_direction dir, unsigned long flags)
> {
> return chan->device->device_prep_slave_sg(chan, sgl, sg_len,
> - dir, flags);
> + dir, flags, NULL);
> }
>
> static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic(
> @@ -628,7 +630,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic(
> size_t period_len, enum dma_transfer_direction dir)
> {
> return chan->device->device_prep_dma_cyclic(chan, buf_addr, buf_len,
> - period_len, dir);
> + period_len, dir, NULL);
> }
>
> static inline int dmaengine_terminate_all(struct dma_chan *chan)
> --
> 1.7.8.4
>
> --
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