From patchwork Tue Sep 15 15:51:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11777191 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7440692C for ; Tue, 15 Sep 2020 16:16:20 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 440CC20936 for ; Tue, 15 Sep 2020 16:16:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ulgiIQZl"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="i+b+ljMR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 440CC20936 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=v/pFkpX1J87aJ3wTLYcRJLc5hMFBXLqiA7AqZzDJY8I=; b=ulgiIQZlK8V606utJH96GyhoM OVjs0JMnchgSlTlTqoQ9vm6Io7aDoAE5Y5KV5F5Lac/NuzCYZozh1nzlHTWE175BNShgQL3wt7SpC QXyLc3rDD7qt/KQYn49mb1XYWgtEZmm6+kqBRt0wpZYJ/ypS5J30/g80uN+AZ1FJz/krunahbbN5K RZbQZyBMItOVTxz3lPNkO2xacAY7JZ83GD60p5xhur4jIY/3ZNW0Q3ym6+kCwV3HfQ9Boy8jr19bo y6gydueYQ2xnKfITl3ugkYW1JZEXk+xhMaXlYgDt21AL7RISqj5l8tJ6rkrdBgltyoKerr90Qq/qP t+Z1sinuw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIDch-0007OA-AC; Tue, 15 Sep 2020 16:16:03 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIDc6-00078O-0X for linux-arm-kernel@merlin.infradead.org; Tue, 15 Sep 2020 16:15:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=Hd44flV0rNOoconJIhItgKEmFIKY+u0t7YJsM9KNpfo=; b=i+b+ljMR1A6ObLbOtGAVyydudC hto/8SEYTIbCYCenMcupFPtRyH7ImLDp6gIyHT9pL4NzgFI5182Hcg7Ggm7J+LIkLTVdFa2sp+2PG PqiknmmvK74L8/T/83E7Xj30UtplIhbdP2/9Fxn/BMtux8bFLmv6LGWx97MHmk3GGb4KSzJFRE5vM vAmjOp+wlLeaV84dEL54D5ju5ydcP/XD2cOjf4F8aK5TOUF15+thz3bEfyEej0tQTq2lPph2FP6ap nCckCVZFsansqhCtEIqSzIPAnl7pv6Kj3AGy6JP3svH8kK9NEdRu3bgPD/it2hQbUUuNJrVBioAsR fVRtUXRg==; Received: from 089144214092.atnat0023.highway.a1.net ([89.144.214.92] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIDc4-0004wT-LD; Tue, 15 Sep 2020 16:15:24 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org Subject: [PATCH 10/18] hal2: convert to dma_alloc_noncoherent Date: Tue, 15 Sep 2020 17:51:14 +0200 Message-Id: <20200915155122.1768241-11-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200915155122.1768241-1-hch@lst.de> References: <20200915155122.1768241-1-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 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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 Tested-by: Thomas Bogendoerfer --- 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); }