From: Paul Cercueil <paul@crapouillou.net> To: "Jonathan Cameron" <jic23@kernel.org>, "Lars-Peter Clausen" <lars@metafoo.de>, "Sumit Semwal" <sumit.semwal@linaro.org>, "Christian König" <christian.koenig@amd.com>, "Vinod Koul" <vkoul@kernel.org>, "Jonathan Corbet" <corbet@lwn.net> Cc: linux-doc@vger.kernel.org, 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, "Nuno Sá" <noname.nuno@gmail.com>, "Michael Hennerich" <Michael.Hennerich@analog.com>, "Paul Cercueil" <paul@crapouillou.net> Subject: [PATCH v5 4/8] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_vec Date: Tue, 19 Dec 2023 18:50:05 +0100 [thread overview] Message-ID: <20231219175009.65482-5-paul@crapouillou.net> (raw) In-Reply-To: <20231219175009.65482-1-paul@crapouillou.net> Add implementation of the .device_prep_slave_dma_vec() callback. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- v3: New patch v5: Implement .device_prep_slave_dma_vec() instead of v3's .device_prep_slave_dma_array(). --- drivers/dma/dma-axi-dmac.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 2457a420c13d..363808088cc5 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -535,6 +535,45 @@ 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_vec(struct dma_chan *c, const struct dma_vec *vecs, + 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(vecs[i].len, 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, vecs[i].addr) || + !axi_dmac_check_len(chan, vecs[i].len)) { + kfree(desc); + return NULL; + } + + dsg = axi_dmac_fill_linear_sg(chan, direction, vecs[i].addr, 1, + vecs[i].len, 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, @@ -957,6 +996,7 @@ 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_vec = axi_dmac_prep_slave_dma_vec; 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; -- 2.43.0
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>, "Sumit Semwal" <sumit.semwal@linaro.org>, "Christian König" <christian.koenig@amd.com>, "Vinod Koul" <vkoul@kernel.org>, "Jonathan Corbet" <corbet@lwn.net> Cc: "Paul Cercueil" <paul@crapouillou.net>, "Michael Hennerich" <Michael.Hennerich@analog.com>, linux-doc@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, "Nuno Sá" <noname.nuno@gmail.com>, dmaengine@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH v5 4/8] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_vec Date: Tue, 19 Dec 2023 18:50:05 +0100 [thread overview] Message-ID: <20231219175009.65482-5-paul@crapouillou.net> (raw) In-Reply-To: <20231219175009.65482-1-paul@crapouillou.net> Add implementation of the .device_prep_slave_dma_vec() callback. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- v3: New patch v5: Implement .device_prep_slave_dma_vec() instead of v3's .device_prep_slave_dma_array(). --- drivers/dma/dma-axi-dmac.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 2457a420c13d..363808088cc5 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -535,6 +535,45 @@ 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_vec(struct dma_chan *c, const struct dma_vec *vecs, + 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(vecs[i].len, 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, vecs[i].addr) || + !axi_dmac_check_len(chan, vecs[i].len)) { + kfree(desc); + return NULL; + } + + dsg = axi_dmac_fill_linear_sg(chan, direction, vecs[i].addr, 1, + vecs[i].len, 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, @@ -957,6 +996,7 @@ 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_vec = axi_dmac_prep_slave_dma_vec; 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; -- 2.43.0
next prev parent reply other threads:[~2023-12-19 17:50 UTC|newest] Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-12-19 17:50 [PATCH v5 0/8] iio: new DMABUF based API, v5 Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-19 17:50 ` [PATCH v5 1/8] iio: buffer-dma: Get rid of outgoing queue Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 11:28 ` Jonathan Cameron 2023-12-21 11:28 ` Jonathan Cameron 2023-12-19 17:50 ` [PATCH v5 2/8] iio: buffer-dma: split iio_dma_buffer_fileio_free() function Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 11:31 ` Jonathan Cameron 2023-12-21 11:31 ` Jonathan Cameron 2023-12-19 17:50 ` [PATCH v5 3/8] dmaengine: Add API function dmaengine_prep_slave_dma_vec() Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 11:40 ` Jonathan Cameron 2023-12-21 11:40 ` Jonathan Cameron 2023-12-21 15:14 ` Vinod Koul 2023-12-21 15:14 ` Vinod Koul 2023-12-21 15:29 ` Paul Cercueil 2023-12-21 15:29 ` Paul Cercueil 2024-01-08 12:20 ` Paul Cercueil 2024-01-08 12:20 ` Paul Cercueil 2024-01-22 11:06 ` [Linaro-mm-sig] " Vinod Koul 2024-01-22 11:06 ` Vinod Koul 2023-12-19 17:50 ` Paul Cercueil [this message] 2023-12-19 17:50 ` [PATCH v5 4/8] dmaengine: dma-axi-dmac: Implement device_prep_slave_dma_vec Paul Cercueil 2023-12-19 17:50 ` [PATCH v5 5/8] iio: core: Add new DMABUF interface infrastructure Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 12:06 ` Jonathan Cameron 2023-12-21 12:06 ` Jonathan Cameron 2023-12-21 17:21 ` Paul Cercueil 2023-12-21 17:21 ` Paul Cercueil 2024-01-25 13:47 ` Paul Cercueil 2024-01-25 13:47 ` Paul Cercueil 2024-01-27 16:50 ` Jonathan Cameron 2024-01-27 16:50 ` Jonathan Cameron 2024-01-29 12:52 ` Christian König 2024-01-29 12:52 ` Christian König 2024-01-29 13:06 ` Paul Cercueil 2024-01-29 13:06 ` Paul Cercueil 2024-01-29 13:17 ` Christian König 2024-01-29 13:17 ` Christian König 2024-01-29 13:32 ` Paul Cercueil 2024-01-29 13:32 ` Paul Cercueil 2024-01-29 14:15 ` Paul Cercueil 2024-01-29 14:15 ` Paul Cercueil 2024-01-08 13:20 ` Daniel Vetter 2024-01-08 13:20 ` Daniel Vetter 2023-12-19 17:50 ` [PATCH v5 6/8] iio: buffer-dma: Enable support for DMABUFs Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 16:04 ` Jonathan Cameron 2023-12-21 16:04 ` Jonathan Cameron 2023-12-22 8:56 ` Nuno Sá 2023-12-22 8:56 ` Nuno Sá 2023-12-26 15:30 ` Jonathan Cameron 2023-12-26 15:30 ` Jonathan Cameron 2023-12-19 17:50 ` [PATCH v5 7/8] iio: buffer-dmaengine: Support new DMABUF based userspace API Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 16:12 ` Jonathan Cameron 2023-12-21 16:12 ` Jonathan Cameron 2023-12-21 17:30 ` Paul Cercueil 2023-12-21 17:30 ` Paul Cercueil 2023-12-22 8:58 ` Nuno Sá 2023-12-22 8:58 ` Nuno Sá 2023-12-26 15:31 ` Jonathan Cameron 2023-12-26 15:31 ` Jonathan Cameron 2023-12-19 17:50 ` [PATCH v5 8/8] Documentation: iio: Document high-speed DMABUF based API Paul Cercueil 2023-12-19 17:50 ` Paul Cercueil 2023-12-21 16:15 ` Jonathan Cameron 2023-12-21 16:15 ` Jonathan Cameron 2023-12-21 16:30 ` [PATCH v5 0/8] iio: new DMABUF based API, v5 Jonathan Cameron 2023-12-21 16:30 ` Jonathan Cameron 2023-12-21 17:56 ` Paul Cercueil 2023-12-21 17:56 ` Paul Cercueil 2023-12-26 15:37 ` Jonathan Cameron 2023-12-26 15:37 ` Jonathan Cameron 2024-01-08 21:12 ` Andrew Davis 2024-01-11 9:20 ` Paul Cercueil 2024-01-11 17:30 ` Andrew Davis 2024-01-12 11:33 ` Paul Cercueil
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