/*
 * Intel SST generic IPC Support
 *
 * Copyright (C) 2015, Intel Corporation. All rights reserved.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#ifndef __SST_GENERIC_IPC_H
#define __SST_GENERIC_IPC_H

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/list.h>
#include <linux/workqueue.h>
#include <linux/sched.h>

#define IPC_MAX_MAILBOX_BYTES	256

struct ipc_message {
	struct list_head list;
	u64 header;

	/* direction wrt host CPU */
	char *tx_data;
	size_t tx_size;
	char *rx_data;
	size_t rx_size;

	wait_queue_head_t waitq;
	bool pending;
	bool complete;
	bool wait;
	int errno;
};

struct sst_generic_ipc;

struct sst_plat_ipc_ops {
	void (*tx_msg)(struct sst_generic_ipc *, struct ipc_message *);
	void (*shim_dbg)(struct sst_generic_ipc *, const char *);
	void (*tx_data_copy)(struct ipc_message *, char *, size_t);
	u64  (*reply_msg_match)(u64 header, u64 *mask);
	bool (*is_dsp_busy)(struct sst_dsp *dsp);
	int (*check_dsp_lp_on)(struct sst_dsp *dsp, bool state);
};

/* SST generic IPC data */
struct sst_generic_ipc {
	struct device *dev;
	struct sst_dsp *dsp;

	/* IPC messaging */
	struct list_head tx_list;
	struct list_head rx_list;
	struct list_head empty_list;
	wait_queue_head_t wait_txq;
	struct task_struct *tx_thread;
	struct work_struct kwork;
	bool pending;
	struct ipc_message *msg;
	int tx_data_max_size;
	int rx_data_max_size;

	struct sst_plat_ipc_ops ops;
};

int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header,
	void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes);

int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header,
	void *tx_data, size_t tx_bytes);

int sst_ipc_tx_message_nopm(struct sst_generic_ipc *ipc, u64 header,
	void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes);

struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
	u64 header);

void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc,
	struct ipc_message *msg);

void sst_ipc_drop_all(struct sst_generic_ipc *ipc);
int sst_ipc_init(struct sst_generic_ipc *ipc);
void sst_ipc_fini(struct sst_generic_ipc *ipc);

#endif
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/smc?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>smc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/smc/smc_close.h?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>smc_close.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='2b89ed65a6f201a6a4f0450ad289aa4bf491608c'/><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>Vlad Yasevich &lt;vyasevich@gmail.com&gt;</td><td class='right'>2017-01-29 22:52:53 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 15:51:12 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/smc/smc_close.h?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>2b89ed65a6f201a6a4f0450ad289aa4bf491608c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/smc/smc_close.h?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>84d46ed640f648af30847b308ccc88a467dba2df</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/smc/smc_close.h?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>net/smc/smc_close.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/smc/smc_close.h?id=d585df1c5ccf995fcee910705ad7a9cdd11d4152'>d585df1c5ccf995fcee910705ad7a9cdd11d4152</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/smc/smc_close.h?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c&amp;id2=d585df1c5ccf995fcee910705ad7a9cdd11d4152'>diff</a>)</td></tr></table>
<div class='commit-subject'>ipv6: Paritially checksum full MTU frames</div><div class='commit-msg'>IPv6 will mark data that is smaller that mtu - headersize as
CHECKSUM_PARTIAL, but if the data will completely fill the mtu,
the packet checksum will be computed in software instead.
Extend the conditional to include the data that fills the mtu
as well.

Signed-off-by: Vladislav Yasevich &lt;vyasevic@redhat.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/?id=2b89ed65a6f201a6a4f0450ad289aa4bf491608c'>Diffstat</a> (limited to 'net/smc/smc_close.h')</div><table summary='diffstat' class='diffstat'>