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Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org Subject: [PATCH 10/17] hal2: convert to dma_alloc_noncoherent Date: Mon, 14 Sep 2020 16:44:26 +0200 Message-Id: <20200914144433.1622958-11-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200914144433.1622958-1-hch@lst.de> References: <20200914144433.1622958-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Cc: alsa-devel@alsa-project.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-parisc@vger.kernel.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, Stefan Richter , netdev@vger.kernel.org, linux1394-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Use the new non-coherent DMA API including proper ownership transfers. This also means we can allocate the buffer memory with the proper direction instead of bidirectional. Signed-off-by: Christoph Hellwig --- sound/mips/hal2.c | 58 ++++++++++++++++++++++------------------------- 1 file changed, 27 insertions(+), 31 deletions(-) diff --git a/sound/mips/hal2.c b/sound/mips/hal2.c index ec84bc4c3a6e77..9ac9b58d7c8cdd 100644 --- a/sound/mips/hal2.c +++ b/sound/mips/hal2.c @@ -441,7 +441,8 @@ static inline void hal2_stop_adc(struct snd_hal2 *hal2) hal2->adc.pbus.pbus->pbdma_ctrl = HPC3_PDMACTRL_LD; } -static int hal2_alloc_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec) +static int hal2_alloc_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec, + enum dma_data_direction buffer_dir) { struct device *dev = hal2->card->dev; struct hal2_desc *desc; @@ -449,15 +450,15 @@ static int hal2_alloc_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec) int count = H2_BUF_SIZE / H2_BLOCK_SIZE; int i; - codec->buffer = dma_alloc_attrs(dev, H2_BUF_SIZE, &buffer_dma, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + codec->buffer = dma_alloc_noncoherent(dev, H2_BUF_SIZE, &buffer_dma, + buffer_dir, GFP_KERNEL); if (!codec->buffer) return -ENOMEM; - desc = dma_alloc_attrs(dev, count * sizeof(struct hal2_desc), - &desc_dma, GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + desc = dma_alloc_noncoherent(dev, count * sizeof(struct hal2_desc), + &desc_dma, DMA_BIDIRECTIONAL, GFP_KERNEL); if (!desc) { - dma_free_attrs(dev, H2_BUF_SIZE, codec->buffer, buffer_dma, - DMA_ATTR_NON_CONSISTENT); + dma_free_noncoherent(dev, H2_BUF_SIZE, codec->buffer, buffer_dma, + buffer_dir); return -ENOMEM; } codec->buffer_dma = buffer_dma; @@ -470,20 +471,22 @@ static int hal2_alloc_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec) desc_dma : desc_dma + (i + 1) * sizeof(struct hal2_desc); desc++; } - dma_cache_sync(dev, codec->desc, count * sizeof(struct hal2_desc), - DMA_TO_DEVICE); + dma_sync_single_for_device(dev, codec->desc_dma, + count * sizeof(struct hal2_desc), + DMA_BIDIRECTIONAL); codec->desc_count = count; return 0; } -static void hal2_free_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec) +static void hal2_free_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec, + enum dma_data_direction buffer_dir) { struct device *dev = hal2->card->dev; - dma_free_attrs(dev, codec->desc_count * sizeof(struct hal2_desc), - codec->desc, codec->desc_dma, DMA_ATTR_NON_CONSISTENT); - dma_free_attrs(dev, H2_BUF_SIZE, codec->buffer, codec->buffer_dma, - DMA_ATTR_NON_CONSISTENT); + dma_free_noncoherent(dev, codec->desc_count * sizeof(struct hal2_desc), + codec->desc, codec->desc_dma, DMA_BIDIRECTIONAL); + dma_free_noncoherent(dev, H2_BUF_SIZE, codec->buffer, codec->buffer_dma, + buffer_dir); } static const struct snd_pcm_hardware hal2_pcm_hw = { @@ -509,21 +512,16 @@ static int hal2_playback_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - int err; runtime->hw = hal2_pcm_hw; - - err = hal2_alloc_dmabuf(hal2, &hal2->dac); - if (err) - return err; - return 0; + return hal2_alloc_dmabuf(hal2, &hal2->dac, DMA_TO_DEVICE); } static int hal2_playback_close(struct snd_pcm_substream *substream) { struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - hal2_free_dmabuf(hal2, &hal2->dac); + hal2_free_dmabuf(hal2, &hal2->dac, DMA_TO_DEVICE); return 0; } @@ -579,7 +577,9 @@ static void hal2_playback_transfer(struct snd_pcm_substream *substream, unsigned char *buf = hal2->dac.buffer + rec->hw_data; memcpy(buf, substream->runtime->dma_area + rec->sw_data, bytes); - dma_cache_sync(hal2->card->dev, buf, bytes, DMA_TO_DEVICE); + dma_sync_single_for_device(hal2->card->dev, + hal2->dac.buffer_dma + rec->hw_data, bytes, + DMA_TO_DEVICE); } @@ -597,22 +597,16 @@ static int hal2_capture_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *adc = &hal2->adc; - int err; runtime->hw = hal2_pcm_hw; - - err = hal2_alloc_dmabuf(hal2, adc); - if (err) - return err; - return 0; + return hal2_alloc_dmabuf(hal2, &hal2->adc, DMA_FROM_DEVICE); } static int hal2_capture_close(struct snd_pcm_substream *substream) { struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - hal2_free_dmabuf(hal2, &hal2->adc); + hal2_free_dmabuf(hal2, &hal2->adc, DMA_FROM_DEVICE); return 0; } @@ -667,7 +661,9 @@ static void hal2_capture_transfer(struct snd_pcm_substream *substream, struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); unsigned char *buf = hal2->adc.buffer + rec->hw_data; - dma_cache_sync(hal2->card->dev, buf, bytes, DMA_FROM_DEVICE); + dma_sync_single_for_cpu(hal2->card->dev, + hal2->adc.buffer_dma + rec->hw_data, bytes, + DMA_FROM_DEVICE); memcpy(substream->runtime->dma_area + rec->sw_data, buf, bytes); }