/*
 * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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 __SOC_TEGRA_BPMP_H
#define __SOC_TEGRA_BPMP_H

#include <linux/mailbox_client.h>
#include <linux/reset-controller.h>
#include <linux/semaphore.h>
#include <linux/types.h>

#include <soc/tegra/bpmp-abi.h>

struct tegra_bpmp_clk;

struct tegra_bpmp_soc {
	struct {
		struct {
			unsigned int offset;
			unsigned int count;
			unsigned int timeout;
		} cpu_tx, thread, cpu_rx;
	} channels;
	unsigned int num_resets;
};

struct tegra_bpmp_mb_data {
	u32 code;
	u32 flags;
	u8 data[MSG_DATA_MIN_SZ];
} __packed;

struct tegra_bpmp_channel {
	struct tegra_bpmp *bpmp;
	struct tegra_bpmp_mb_data *ib;
	struct tegra_bpmp_mb_data *ob;
	struct completion completion;
	struct tegra_ivc *ivc;
};

typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq,
					 struct tegra_bpmp_channel *channel,
					 void *data);

struct tegra_bpmp_mrq {
	struct list_head list;
	unsigned int mrq;
	tegra_bpmp_mrq_handler_t handler;
	void *data;
};

struct tegra_bpmp {
	const struct tegra_bpmp_soc *soc;
	struct device *dev;

	struct {
		struct gen_pool *pool;
		dma_addr_t phys;
		void *virt;
	} tx, rx;

	struct {
		struct mbox_client client;
		struct mbox_chan *channel;
	} mbox;

	struct tegra_bpmp_channel *channels;
	unsigned int num_channels;

	struct {
		unsigned long *allocated;
		unsigned long *busy;
		unsigned int count;
		struct semaphore lock;
	} threaded;

	struct list_head mrqs;
	spinlock_t lock;

	struct tegra_bpmp_clk **clocks;
	unsigned int num_clocks;

	struct reset_controller_dev rstc;
};

struct tegra_bpmp *tegra_bpmp_get(struct device *dev);
void tegra_bpmp_put(struct tegra_bpmp *bpmp);

struct tegra_bpmp_message {
	unsigned int mrq;

	struct {
		const void *data;
		size_t size;
	} tx;

	struct {
		void *data;
		size_t size;
	} rx;
};

int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
			       struct tegra_bpmp_message *msg);
int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
			struct tegra_bpmp_message *msg);

int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
			   tegra_bpmp_mrq_handler_t handler, void *data);
void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
			 void *data);

#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP)
int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp)
{
	return 0;
}
#endif

#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP)
int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
{
	return 0;
}
#endif

#endif /* __SOC_TEGRA_BPMP_H */
='/cgit.cgi/linux/net-next.git/log/sound?h=nds-private-remove&amp;id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc?h=nds-private-remove&amp;id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/kirkwood?h=nds-private-remove&amp;id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>kirkwood</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/kirkwood/armada-370-db.c?h=nds-private-remove&amp;id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>armada-370-db.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/kirkwood/armada-370-db.c?h=nds-private-remove&amp;id=a9e419dc7be6997409dca6d1b9daf3cc7046902f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/net/ti-dp83867.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/net/ti-dp83867.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/net/ti-dp83867.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>include/dt-bindings/net/ti-dp83867.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/net/ti-dp83867.h?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/net/ti-dp83867.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'include/dt-bindings/net/ti-dp83867.h')</div><table summary='diffstat' class='diffstat'>