/*
 * linux/sound/arm/pxa2xx-pcm.c -- ALSA PCM interface for the Intel PXA2xx chip
 *
 * Author:	Nicolas Pitre
 * Created:	Nov 30, 2004
 * Copyright:	(C) 2004 MontaVista Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/dmaengine.h>
#include <linux/of.h>

#include <sound/core.h>
#include <sound/soc.h>
#include <sound/pxa2xx-lib.h>
#include <sound/dmaengine_pcm.h>

#include "../../arm/pxa2xx-pcm.h"

static int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_dmaengine_dai_dma_data *dma;

	dma = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);

	/* return if this is a bufferless transfer e.g.
	 * codec <--> BT codec or GSM modem -- lg FIXME */
	if (!dma)
		return 0;

	return __pxa2xx_pcm_hw_params(substream, params);
}

static int pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	__pxa2xx_pcm_hw_free(substream);

	return 0;
}

static struct snd_pcm_ops pxa2xx_pcm_ops = {
	.open		= __pxa2xx_pcm_open,
	.close		= __pxa2xx_pcm_close,
	.ioctl		= snd_pcm_lib_ioctl,
	.hw_params	= pxa2xx_pcm_hw_params,
	.hw_free	= pxa2xx_pcm_hw_free,
	.prepare	= __pxa2xx_pcm_prepare,
	.trigger	= pxa2xx_pcm_trigger,
	.pointer	= pxa2xx_pcm_pointer,
	.mmap		= pxa2xx_pcm_mmap,
};

static int pxa2xx_soc_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_card *card = rtd->card->snd_card;
	struct snd_pcm *pcm = rtd->pcm;
	int ret;

	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
	if (ret)
		return ret;

	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
		ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_PLAYBACK);
		if (ret)
			goto out;
	}

	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
		ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_CAPTURE);
		if (ret)
			goto out;
	}
 out:
	return ret;
}

static struct snd_soc_platform_driver pxa2xx_soc_platform = {
	.ops 	= &pxa2xx_pcm_ops,
	.pcm_new	= pxa2xx_soc_pcm_new,
	.pcm_free	= pxa2xx_pcm_free_dma_buffers,
};

static int pxa2xx_soc_platform_probe(struct platform_device *pdev)
{
	return devm_snd_soc_register_platform(&pdev->dev, &pxa2xx_soc_platform);
}

#ifdef CONFIG_OF
static const struct of_device_id snd_soc_pxa_audio_match[] = {
	{ .compatible   = "mrvl,pxa-pcm-audio" },
	{ }
};
MODULE_DEVICE_TABLE(of, snd_soc_pxa_audio_match);
#endif

static struct platform_driver pxa_pcm_driver = {
	.driver = {
		.name = "pxa-pcm-audio",
		.of_match_table = of_match_ptr(snd_soc_pxa_audio_match),
	},

	.probe = pxa2xx_soc_platform_probe,
};

module_platform_driver(pxa_pcm_driver);

MODULE_AUTHOR("Nicolas Pitre");
MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pxa-pcm-audio");
e&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>sunrpc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>xprtrdma</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma/verbs.c?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>verbs.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='63a6fff353d01da5a22b72670c434bf12fa0e3b8'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Robert Shearman &lt;rshearma@brocade.com&gt;</td><td class='right'>2017-01-26 18:02:24 +0000</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 15:00:58 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma/verbs.c?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>63a6fff353d01da5a22b72670c434bf12fa0e3b8</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/sunrpc/xprtrdma/verbs.c?id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>5707ae376777271ab2d77411fed89afb515f0257</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/sunrpc/xprtrdma/verbs.c?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>net/sunrpc/xprtrdma/verbs.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma/verbs.c?h=nds-private-remove&amp;id=a3a4de056ed5cfb22085173d8f0f13b0ca6b6d60'>a3a4de056ed5cfb22085173d8f0f13b0ca6b6d60</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sunrpc/xprtrdma/verbs.c?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8&amp;id2=a3a4de056ed5cfb22085173d8f0f13b0ca6b6d60'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: Avoid receiving packets with an l3mdev on unbound UDP sockets</div><div class='commit-msg'>Packets arriving in a VRF currently are delivered to UDP sockets that
aren't bound to any interface. TCP defaults to not delivering packets
arriving in a VRF to unbound sockets. IP route lookup and socket
transmit both assume that unbound means using the default table and
UDP applications that haven't been changed to be aware of VRFs may not
function correctly in this case since they may not be able to handle
overlapping IP address ranges, or be able to send packets back to the
original sender if required.

So add a sysctl, udp_l3mdev_accept, to control this behaviour with it
being analgous to the existing tcp_l3mdev_accept, namely to allow a
process to have a VRF-global listen socket. Have this default to off
as this is the behaviour that users will expect, given that there is
no explicit mechanism to set unmodified VRF-unaware application into a
default VRF.

Signed-off-by: Robert Shearman &lt;rshearma@brocade.com&gt;
Acked-by: David Ahern &lt;dsa@cumulusnetworks.com&gt;
Tested-by: David Ahern &lt;dsa@cumulusnetworks.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=63a6fff353d01da5a22b72670c434bf12fa0e3b8'>Diffstat</a> (limited to 'net/sunrpc/xprtrdma/verbs.c')</div><table summary='diffstat' class='diffstat'>