From: Paul Cercueil <paul@crapouillou.net> To: "Jonathan Cameron" <jic23@kernel.org>, "Lars-Peter Clausen" <lars@metafoo.de>, "Vinod Koul" <vkoul@kernel.org>, "Michael Hennerich" <Michael.Hennerich@analog.com>, "Nuno Sá" <noname.nuno@gmail.com>, "Sumit Semwal" <sumit.semwal@linaro.org>, "Christian König" <christian.koenig@amd.com> Cc: Paul Cercueil <paul@crapouillou.net>, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, dmaengine@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH v3 02/11] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_array Date: Mon, 3 Apr 2023 17:47:51 +0200 [thread overview] Message-ID: <20230403154800.215924-3-paul@crapouillou.net> (raw) In-Reply-To: <20230403154800.215924-1-paul@crapouillou.net> Add implementation of the .device_prep_slave_dma_array() callback. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- v3: New patch --- drivers/dma/dma-axi-dmac.c | 41 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index a812b9b00e6b..61a796aca631 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -536,6 +536,46 @@ static struct axi_dmac_sg *axi_dmac_fill_linear_sg(struct axi_dmac_chan *chan, return sg; } +static struct dma_async_tx_descriptor * +axi_dmac_prep_slave_dma_array(struct dma_chan *c, dma_addr_t *addrs, + size_t *lengths, size_t nb, + enum dma_transfer_direction direction, + unsigned long flags) +{ + struct axi_dmac_chan *chan = to_axi_dmac_chan(c); + struct axi_dmac_desc *desc; + unsigned int num_sgs = 0; + struct axi_dmac_sg *dsg; + size_t i; + + if (direction != chan->direction) + return NULL; + + for (i = 0; i < nb; i++) + num_sgs += DIV_ROUND_UP(lengths[i], chan->max_length); + + desc = axi_dmac_alloc_desc(num_sgs); + if (!desc) + return NULL; + + dsg = desc->sg; + + for (i = 0; i < nb; i++) { + if (!axi_dmac_check_addr(chan, addrs[i]) || + !axi_dmac_check_len(chan, lengths[i])) { + kfree(desc); + return NULL; + } + + dsg = axi_dmac_fill_linear_sg(chan, direction, addrs[i], 1, + lengths[i], dsg); + } + + desc->cyclic = false; + + return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags); +} + static struct dma_async_tx_descriptor *axi_dmac_prep_slave_sg( struct dma_chan *c, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, @@ -958,6 +998,7 @@ static int axi_dmac_probe(struct platform_device *pdev) dma_dev->device_tx_status = dma_cookie_status; dma_dev->device_issue_pending = axi_dmac_issue_pending; dma_dev->device_prep_slave_sg = axi_dmac_prep_slave_sg; + dma_dev->device_prep_slave_dma_array = axi_dmac_prep_slave_dma_array; dma_dev->device_prep_dma_cyclic = axi_dmac_prep_dma_cyclic; dma_dev->device_prep_interleaved_dma = axi_dmac_prep_interleaved; dma_dev->device_terminate_all = axi_dmac_terminate_all; -- 2.39.2
WARNING: multiple messages have this Message-ID (diff)
From: Paul Cercueil <paul@crapouillou.net> To: "Jonathan Cameron" <jic23@kernel.org>, "Lars-Peter Clausen" <lars@metafoo.de>, "Vinod Koul" <vkoul@kernel.org>, "Michael Hennerich" <Michael.Hennerich@analog.com>, "Nuno Sá" <noname.nuno@gmail.com>, "Sumit Semwal" <sumit.semwal@linaro.org>, "Christian König" <christian.koenig@amd.com> Cc: linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-iio@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Paul Cercueil <paul@crapouillou.net> Subject: [PATCH v3 02/11] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_array Date: Mon, 3 Apr 2023 17:47:51 +0200 [thread overview] Message-ID: <20230403154800.215924-3-paul@crapouillou.net> (raw) In-Reply-To: <20230403154800.215924-1-paul@crapouillou.net> Add implementation of the .device_prep_slave_dma_array() callback. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- v3: New patch --- drivers/dma/dma-axi-dmac.c | 41 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index a812b9b00e6b..61a796aca631 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -536,6 +536,46 @@ static struct axi_dmac_sg *axi_dmac_fill_linear_sg(struct axi_dmac_chan *chan, return sg; } +static struct dma_async_tx_descriptor * +axi_dmac_prep_slave_dma_array(struct dma_chan *c, dma_addr_t *addrs, + size_t *lengths, size_t nb, + enum dma_transfer_direction direction, + unsigned long flags) +{ + struct axi_dmac_chan *chan = to_axi_dmac_chan(c); + struct axi_dmac_desc *desc; + unsigned int num_sgs = 0; + struct axi_dmac_sg *dsg; + size_t i; + + if (direction != chan->direction) + return NULL; + + for (i = 0; i < nb; i++) + num_sgs += DIV_ROUND_UP(lengths[i], chan->max_length); + + desc = axi_dmac_alloc_desc(num_sgs); + if (!desc) + return NULL; + + dsg = desc->sg; + + for (i = 0; i < nb; i++) { + if (!axi_dmac_check_addr(chan, addrs[i]) || + !axi_dmac_check_len(chan, lengths[i])) { + kfree(desc); + return NULL; + } + + dsg = axi_dmac_fill_linear_sg(chan, direction, addrs[i], 1, + lengths[i], dsg); + } + + desc->cyclic = false; + + return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags); +} + static struct dma_async_tx_descriptor *axi_dmac_prep_slave_sg( struct dma_chan *c, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, @@ -958,6 +998,7 @@ static int axi_dmac_probe(struct platform_device *pdev) dma_dev->device_tx_status = dma_cookie_status; dma_dev->device_issue_pending = axi_dmac_issue_pending; dma_dev->device_prep_slave_sg = axi_dmac_prep_slave_sg; + dma_dev->device_prep_slave_dma_array = axi_dmac_prep_slave_dma_array; dma_dev->device_prep_dma_cyclic = axi_dmac_prep_dma_cyclic; dma_dev->device_prep_interleaved_dma = axi_dmac_prep_interleaved; dma_dev->device_terminate_all = axi_dmac_terminate_all; -- 2.39.2
next prev parent reply other threads:[~2023-04-03 15:48 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-03 15:47 [PATCH v3 00/11] iio: new DMABUF based API, v3 Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-03 15:47 ` [PATCH v3 01/11] dmaengine: Add API function dmaengine_prep_slave_dma_array() Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-04 1:59 ` Hillf Danton 2023-04-04 7:42 ` Paul Cercueil 2023-04-04 7:42 ` Paul Cercueil 2023-04-04 8:54 ` Christian König 2023-04-04 8:54 ` Christian König 2023-04-12 17:23 ` Vinod Koul 2023-04-12 17:23 ` Vinod Koul 2023-04-13 7:59 ` Paul Cercueil 2023-04-13 7:59 ` Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil [this message] 2023-04-03 15:47 ` [PATCH v3 02/11] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_array Paul Cercueil 2023-04-03 15:47 ` [PATCH v3 03/11] iio: buffer-dma: Get rid of outgoing queue Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-16 14:24 ` Jonathan Cameron 2023-04-16 14:24 ` Jonathan Cameron 2023-04-18 8:08 ` Paul Cercueil 2023-04-18 8:08 ` Paul Cercueil 2023-05-01 16:25 ` Jonathan Cameron 2023-05-01 16:25 ` Jonathan Cameron 2023-04-03 15:47 ` [PATCH v3 04/11] iio: buffer-dma: Enable buffer write support Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-16 14:30 ` Jonathan Cameron 2023-04-16 14:30 ` Jonathan Cameron 2023-04-03 15:47 ` [PATCH v3 05/11] iio: buffer-dmaengine: Support specifying buffer direction Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-16 14:35 ` Jonathan Cameron 2023-04-16 14:35 ` Jonathan Cameron 2023-04-03 15:47 ` [PATCH v3 06/11] iio: buffer-dmaengine: Enable write support Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-16 14:37 ` Jonathan Cameron 2023-04-16 14:37 ` Jonathan Cameron 2023-04-03 15:47 ` [PATCH v3 07/11] iio: core: Add new DMABUF interface infrastructure Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-04 7:32 ` Nuno Sá 2023-04-04 7:55 ` Paul Cercueil 2023-04-04 8:21 ` Nuno Sá 2023-04-04 13:22 ` Lars-Peter Clausen 2023-04-16 15:04 ` Jonathan Cameron 2023-04-16 15:04 ` Jonathan Cameron 2023-04-03 15:47 ` [PATCH v3 08/11] iio: buffer-dma: split iio_dma_buffer_fileio_free() function Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-03 15:47 ` [PATCH v3 09/11] iio: buffer-dma: Enable support for DMABUFs Paul Cercueil 2023-04-03 15:47 ` Paul Cercueil 2023-04-16 15:10 ` Jonathan Cameron 2023-04-16 15:10 ` Jonathan Cameron 2023-04-03 15:49 ` [PATCH v3 10/11] iio: buffer-dmaengine: Support new DMABUF based userspace API Paul Cercueil 2023-04-03 15:49 ` Paul Cercueil 2023-04-03 15:49 ` [PATCH v3 11/11] Documentation: iio: Document high-speed DMABUF based API Paul Cercueil 2023-04-03 15:49 ` Paul Cercueil 2023-04-03 16:05 ` Jonathan Corbet 2023-04-03 16:05 ` Jonathan Corbet 2023-04-03 18:37 ` Paul Cercueil 2023-04-03 18:37 ` Paul Cercueil 2023-04-16 15:15 ` [PATCH v3 10/11] iio: buffer-dmaengine: Support new DMABUF based userspace API Jonathan Cameron 2023-04-16 15:15 ` Jonathan Cameron 2023-04-04 7:44 ` [PATCH v3 00/11] iio: new DMABUF based API, v3 Nuno Sá
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