[deliverable/linux.git] / drivers / gpu / host1x / syncpt.c

/*
 * Tegra host1x Syncpoints
 *
 * Copyright (c) 2010-2013, NVIDIA Corporation.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/slab.h>

#include <trace/events/host1x.h>

#include "syncpt.h"
#include "dev.h"
#include "intr.h"
#include "debug.h"

#define SYNCPT_CHECK_PERIOD (2 * HZ)
#define MAX_STUCK_CHECK_COUNT 15

static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
						  struct device *dev,
						  int client_managed)
{
	int i;
	struct host1x_syncpt *sp = host->syncpt;
	char *name;

	for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
		;
	if (sp->dev)
		return NULL;

	name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id,
			dev ? dev_name(dev) : NULL);
	if (!name)
		return NULL;

	sp->dev = dev;
	sp->name = name;
	sp->client_managed = client_managed;

	return sp;
}

u32 host1x_syncpt_id(struct host1x_syncpt *sp)
{
	return sp->id;
}

/*
 * Updates the value sent to hardware.
 */
u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs)
{
	return (u32)atomic_add_return(incrs, &sp->max_val);
}

 /*
 * Write cached syncpoint and waitbase values to hardware.
 */
void host1x_syncpt_restore(struct host1x *host)
{
	struct host1x_syncpt *sp_base = host->syncpt;
	u32 i;

	for (i = 0; i < host1x_syncpt_nb_pts(host); i++)
		host1x_hw_syncpt_restore(host, sp_base + i);
	for (i = 0; i < host1x_syncpt_nb_bases(host); i++)
		host1x_hw_syncpt_restore_wait_base(host, sp_base + i);
	wmb();
}

/*
 * Update the cached syncpoint and waitbase values by reading them
 * from the registers.
  */
void host1x_syncpt_save(struct host1x *host)
{
	struct host1x_syncpt *sp_base = host->syncpt;
	u32 i;

	for (i = 0; i < host1x_syncpt_nb_pts(host); i++) {
		if (host1x_syncpt_client_managed(sp_base + i))
			host1x_hw_syncpt_load(host, sp_base + i);
		else
			WARN_ON(!host1x_syncpt_idle(sp_base + i));
	}

	for (i = 0; i < host1x_syncpt_nb_bases(host); i++)
		host1x_hw_syncpt_load_wait_base(host, sp_base + i);
}

/*
 * Updates the cached syncpoint value by reading a new value from the hardware
 * register
 */
u32 host1x_syncpt_load(struct host1x_syncpt *sp)
{
	u32 val;
	val = host1x_hw_syncpt_load(sp->host, sp);
	trace_host1x_syncpt_load_min(sp->id, val);

	return val;
}

/*
 * Get the current syncpoint base
 */
u32 host1x_syncpt_load_wait_base(struct host1x_syncpt *sp)
{
	u32 val;
	host1x_hw_syncpt_load_wait_base(sp->host, sp);
	val = sp->base_val;
	return val;
}

/*
 * Write a cpu syncpoint increment to the hardware, without touching
 * the cache. Caller is responsible for host being powered.
 */
void host1x_syncpt_cpu_incr(struct host1x_syncpt *sp)
{
	host1x_hw_syncpt_cpu_incr(sp->host, sp);
}

/*
 * Increment syncpoint value from cpu, updating cache
 */
void host1x_syncpt_incr(struct host1x_syncpt *sp)
{
	if (host1x_syncpt_client_managed(sp))
		host1x_syncpt_incr_max(sp, 1);
	host1x_syncpt_cpu_incr(sp);
}

/*
 * Updated sync point form hardware, and returns true if syncpoint is expired,
 * false if we may need to wait
 */
static bool syncpt_load_min_is_expired(struct host1x_syncpt *sp, u32 thresh)
{
	host1x_hw_syncpt_load(sp->host, sp);
	return host1x_syncpt_is_expired(sp, thresh);
}

/*
 * Main entrypoint for syncpoint value waits.
 */
int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
			u32 *value)
{
	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
	void *ref;
	struct host1x_waitlist *waiter;
	int err = 0, check_count = 0;
	u32 val;

	if (value)
		*value = 0;

	/* first check cache */
	if (host1x_syncpt_is_expired(sp, thresh)) {
		if (value)
			*value = host1x_syncpt_load(sp);
		return 0;
	}

	/* try to read from register */
	val = host1x_hw_syncpt_load(sp->host, sp);
	if (host1x_syncpt_is_expired(sp, thresh)) {
		if (value)
			*value = val;
		goto done;
	}

	if (!timeout) {
		err = -EAGAIN;
		goto done;
	}

	/* allocate a waiter */
	waiter = kzalloc(sizeof(*waiter), GFP_KERNEL);
	if (!waiter) {
		err = -ENOMEM;
		goto done;
	}

	/* schedule a wakeup when the syncpoint value is reached */
	err = host1x_intr_add_action(sp->host, sp->id, thresh,
				     HOST1X_INTR_ACTION_WAKEUP_INTERRUPTIBLE,
				     &wq, waiter, &ref);
	if (err)
		goto done;

	err = -EAGAIN;
	/* Caller-specified timeout may be impractically low */
	if (timeout < 0)
		timeout = LONG_MAX;

	/* wait for the syncpoint, or timeout, or signal */
	while (timeout) {
		long check = min_t(long, SYNCPT_CHECK_PERIOD, timeout);
		int remain = wait_event_interruptible_timeout(wq,
				syncpt_load_min_is_expired(sp, thresh),
				check);
		if (remain > 0 || host1x_syncpt_is_expired(sp, thresh)) {
			if (value)
				*value = host1x_syncpt_load(sp);
			err = 0;
			break;
		}
		if (remain < 0) {
			err = remain;
			break;
		}
		timeout -= check;
		if (timeout && check_count <= MAX_STUCK_CHECK_COUNT) {
			dev_warn(sp->host->dev,
				"%s: syncpoint id %d (%s) stuck waiting %d, timeout=%ld\n",
				 current->comm, sp->id, sp->name,
				 thresh, timeout);

			host1x_debug_dump_syncpts(sp->host);
			if (check_count == MAX_STUCK_CHECK_COUNT)
				host1x_debug_dump(sp->host);
			check_count++;
		}
	}
	host1x_intr_put_ref(sp->host, sp->id, ref);

done:
	return err;
}
EXPORT_SYMBOL(host1x_syncpt_wait);

/*
 * Returns true if syncpoint is expired, false if we may need to wait
 */
bool host1x_syncpt_is_expired(struct host1x_syncpt *sp, u32 thresh)
{
	u32 current_val;
	u32 future_val;
	smp_rmb();
	current_val = (u32)atomic_read(&sp->min_val);
	future_val = (u32)atomic_read(&sp->max_val);

	/* Note the use of unsigned arithmetic here (mod 1<<32).
	 *
	 * c = current_val = min_val	= the current value of the syncpoint.
	 * t = thresh			= the value we are checking
	 * f = future_val  = max_val	= the value c will reach when all
	 *				  outstanding increments have completed.
	 *
	 * Note that c always chases f until it reaches f.
	 *
	 * Dtf = (f - t)
	 * Dtc = (c - t)
	 *
	 *  Consider all cases:
	 *
	 *	A) .....c..t..f.....	Dtf < Dtc	need to wait
	 *	B) .....c.....f..t..	Dtf > Dtc	expired
	 *	C) ..t..c.....f.....	Dtf > Dtc	expired	   (Dct very large)
	 *
	 *  Any case where f==c: always expired (for any t).	Dtf == Dcf
	 *  Any case where t==c: always expired (for any f).	Dtf >= Dtc (because Dtc==0)
	 *  Any case where t==f!=c: always wait.		Dtf <  Dtc (because Dtf==0,
	 *							Dtc!=0)
	 *
	 *  Other cases:
	 *
	 *	A) .....t..f..c.....	Dtf < Dtc	need to wait
	 *	A) .....f..c..t.....	Dtf < Dtc	need to wait
	 *	A) .....f..t..c.....	Dtf > Dtc	expired
	 *
	 *   So:
	 *	   Dtf >= Dtc implies EXPIRED	(return true)
	 *	   Dtf <  Dtc implies WAIT	(return false)
	 *
	 * Note: If t is expired then we *cannot* wait on it. We would wait
	 * forever (hang the system).
	 *
	 * Note: do NOT get clever and remove the -thresh from both sides. It
	 * is NOT the same.
	 *
	 * If future valueis zero, we have a client managed sync point. In that
	 * case we do a direct comparison.
	 */
	if (!host1x_syncpt_client_managed(sp))
		return future_val - thresh >= current_val - thresh;
	else
		return (s32)(current_val - thresh) >= 0;
}

/* remove a wait pointed to by patch_addr */
int host1x_syncpt_patch_wait(struct host1x_syncpt *sp, void *patch_addr)
{
	return host1x_hw_syncpt_patch_wait(sp->host, sp, patch_addr);
}

int host1x_syncpt_init(struct host1x *host)
{
	struct host1x_syncpt *syncpt;
	int i;

	syncpt = devm_kzalloc(host->dev, sizeof(*syncpt) * host->info->nb_pts,
		GFP_KERNEL);
	if (!syncpt)
		return -ENOMEM;

	for (i = 0; i < host->info->nb_pts; ++i) {
		syncpt[i].id = i;
		syncpt[i].host = host;
	}

	host->syncpt = syncpt;

	host1x_syncpt_restore(host);

	/* Allocate sync point to use for clearing waits for expired fences */
	host->nop_sp = _host1x_syncpt_alloc(host, NULL, 0);
	if (!host->nop_sp)
		return -ENOMEM;

	return 0;
}

struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
					    int client_managed)
{
	struct host1x *host = dev_get_drvdata(dev->parent);
	return _host1x_syncpt_alloc(host, dev, client_managed);
}

void host1x_syncpt_free(struct host1x_syncpt *sp)
{
	if (!sp)
		return;

	kfree(sp->name);
	sp->dev = NULL;
	sp->name = NULL;
	sp->client_managed = 0;
}

void host1x_syncpt_deinit(struct host1x *host)
{
	int i;
	struct host1x_syncpt *sp = host->syncpt;
	for (i = 0; i < host->info->nb_pts; i++, sp++)
		kfree(sp->name);
}

int host1x_syncpt_nb_pts(struct host1x *host)
{
	return host->info->nb_pts;
}

int host1x_syncpt_nb_bases(struct host1x *host)
{
	return host->info->nb_bases;
}

int host1x_syncpt_nb_mlocks(struct host1x *host)
{
	return host->info->nb_mlocks;
}

struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id)
{
	if (host->info->nb_pts < id)
		return NULL;
	return host->syncpt + id;
}
Commit	Line	Data
75471687 TB	1	/*
	2	* Tegra host1x Syncpoints
	3	*
	4	* Copyright (c) 2010-2013, NVIDIA Corporation.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <linux/slab.h>
	22
	23	#include <trace/events/host1x.h>
	24
	25	#include "syncpt.h"
	26	#include "dev.h"
7ede0b0b	27	#include "intr.h"
6236451d	28	#include "debug.h"
7ede0b0b TB	29
	30	#define SYNCPT_CHECK_PERIOD (2 * HZ)
	31	#define MAX_STUCK_CHECK_COUNT 15
75471687 TB	32
	33	static struct host1x_syncpt _host1x_syncpt_alloc(struct host1x host,
	34	struct device *dev,
	35	int client_managed)
	36	{
	37	int i;
	38	struct host1x_syncpt *sp = host->syncpt;
	39	char *name;
	40
	41	for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
	42	;
	43	if (sp->dev)
	44	return NULL;
	45
	46	name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id,
	47	dev ? dev_name(dev) : NULL);
	48	if (!name)
	49	return NULL;
	50
	51	sp->dev = dev;
	52	sp->name = name;
	53	sp->client_managed = client_managed;
	54
	55	return sp;
	56	}
	57
	58	u32 host1x_syncpt_id(struct host1x_syncpt *sp)
	59	{
	60	return sp->id;
	61	}
	62
	63	/*
	64	* Updates the value sent to hardware.
	65	*/
	66	u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs)
	67	{
	68	return (u32)atomic_add_return(incrs, &sp->max_val);
	69	}
	70
	71	/*
	72	* Write cached syncpoint and waitbase values to hardware.
	73	*/
	74	void host1x_syncpt_restore(struct host1x *host)
	75	{
	76	struct host1x_syncpt *sp_base = host->syncpt;
	77	u32 i;
	78
	79	for (i = 0; i < host1x_syncpt_nb_pts(host); i++)
	80	host1x_hw_syncpt_restore(host, sp_base + i);
	81	for (i = 0; i < host1x_syncpt_nb_bases(host); i++)
	82	host1x_hw_syncpt_restore_wait_base(host, sp_base + i);
	83	wmb();
	84	}
	85
	86	/*
	87	* Update the cached syncpoint and waitbase values by reading them
	88	* from the registers.
	89	*/
	90	void host1x_syncpt_save(struct host1x *host)
	91	{
	92	struct host1x_syncpt *sp_base = host->syncpt;
	93	u32 i;
	94
	95	for (i = 0; i < host1x_syncpt_nb_pts(host); i++) {
96	if (host1x_syncpt_client_managed(sp_base + i))
97	host1x_hw_syncpt_load(host, sp_base + i);
98	else
99	WARN_ON(!host1x_syncpt_idle(sp_base + i));
100	}
101
102	for (i = 0; i < host1x_syncpt_nb_bases(host); i++)
103	host1x_hw_syncpt_load_wait_base(host, sp_base + i);
104	}
105
106	/*
107	* Updates the cached syncpoint value by reading a new value from the hardware
108	* register
109	*/
110	u32 host1x_syncpt_load(struct host1x_syncpt *sp)
111	{
112	u32 val;
113	val = host1x_hw_syncpt_load(sp->host, sp);
114	trace_host1x_syncpt_load_min(sp->id, val);
115
116	return val;
117	}
118
119	/*
120	* Get the current syncpoint base
121	*/
122	u32 host1x_syncpt_load_wait_base(struct host1x_syncpt *sp)
123	{
124	u32 val;
125	host1x_hw_syncpt_load_wait_base(sp->host, sp);
126	val = sp->base_val;
127	return val;
128	}
129
130	/*
131	* Write a cpu syncpoint increment to the hardware, without touching
132	* the cache. Caller is responsible for host being powered.
133	*/
134	void host1x_syncpt_cpu_incr(struct host1x_syncpt *sp)
135	{
136	host1x_hw_syncpt_cpu_incr(sp->host, sp);
137	}
138
139	/*
140	* Increment syncpoint value from cpu, updating cache
141	*/
142	void host1x_syncpt_incr(struct host1x_syncpt *sp)
143	{
144	if (host1x_syncpt_client_managed(sp))
145	host1x_syncpt_incr_max(sp, 1);
146	host1x_syncpt_cpu_incr(sp);
147	}
148
7ede0b0b TB	149	/*
	150	* Updated sync point form hardware, and returns true if syncpoint is expired,
	151	* false if we may need to wait
	152	*/
	153	static bool syncpt_load_min_is_expired(struct host1x_syncpt *sp, u32 thresh)
	154	{
	155	host1x_hw_syncpt_load(sp->host, sp);
	156	return host1x_syncpt_is_expired(sp, thresh);
	157	}
	158
	159	/*
	160	* Main entrypoint for syncpoint value waits.
	161	*/
	162	int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
	163	u32 *value)
	164	{
	165	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
	166	void *ref;
	167	struct host1x_waitlist *waiter;
	168	int err = 0, check_count = 0;
	169	u32 val;
	170
	171	if (value)
	172	*value = 0;
	173
	174	/* first check cache */
	175	if (host1x_syncpt_is_expired(sp, thresh)) {
	176	if (value)
	177	*value = host1x_syncpt_load(sp);
	178	return 0;
	179	}
	180
	181	/* try to read from register */
	182	val = host1x_hw_syncpt_load(sp->host, sp);
	183	if (host1x_syncpt_is_expired(sp, thresh)) {
	184	if (value)
	185	*value = val;
	186	goto done;
	187	}
	188
	189	if (!timeout) {
	190	err = -EAGAIN;
	191	goto done;
	192	}
	193
	194	/* allocate a waiter */
	195	waiter = kzalloc(sizeof(*waiter), GFP_KERNEL);
	196	if (!waiter) {
	197	err = -ENOMEM;
	198	goto done;
	199	}
	200
	201	/* schedule a wakeup when the syncpoint value is reached */
	202	err = host1x_intr_add_action(sp->host, sp->id, thresh,
	203	HOST1X_INTR_ACTION_WAKEUP_INTERRUPTIBLE,
	204	&wq, waiter, &ref);
	205	if (err)
	206	goto done;
	207
	208	err = -EAGAIN;
	209	/* Caller-specified timeout may be impractically low */
	210	if (timeout < 0)
	211	timeout = LONG_MAX;
	212
213	/* wait for the syncpoint, or timeout, or signal */
214	while (timeout) {
215	long check = min_t(long, SYNCPT_CHECK_PERIOD, timeout);
216	int remain = wait_event_interruptible_timeout(wq,
217	syncpt_load_min_is_expired(sp, thresh),
218	check);
219	if (remain > 0 \|\| host1x_syncpt_is_expired(sp, thresh)) {
220	if (value)
221	*value = host1x_syncpt_load(sp);
222	err = 0;
223	break;
224	}
225	if (remain < 0) {
226	err = remain;
227	break;
228	}
229	timeout -= check;
230	if (timeout && check_count <= MAX_STUCK_CHECK_COUNT) {
231	dev_warn(sp->host->dev,
232	"%s: syncpoint id %d (%s) stuck waiting %d, timeout=%ld\n",
233	current->comm, sp->id, sp->name,
234	thresh, timeout);
6236451d TB	235
	236	host1x_debug_dump_syncpts(sp->host);
	237	if (check_count == MAX_STUCK_CHECK_COUNT)
	238	host1x_debug_dump(sp->host);
7ede0b0b TB	239	check_count++;
	240	}
	241	}
	242	host1x_intr_put_ref(sp->host, sp->id, ref);
	243
	244	done:
	245	return err;
	246	}
	247	EXPORT_SYMBOL(host1x_syncpt_wait);
	248
	249	/*
	250	* Returns true if syncpoint is expired, false if we may need to wait
	251	*/
	252	bool host1x_syncpt_is_expired(struct host1x_syncpt *sp, u32 thresh)
	253	{
	254	u32 current_val;
	255	u32 future_val;
	256	smp_rmb();
	257	current_val = (u32)atomic_read(&sp->min_val);
	258	future_val = (u32)atomic_read(&sp->max_val);
	259
	260	/* Note the use of unsigned arithmetic here (mod 1<<32).
	261	*
	262	* c = current_val = min_val = the current value of the syncpoint.
	263	* t = thresh = the value we are checking
	264	* f = future_val = max_val = the value c will reach when all
	265	* outstanding increments have completed.
	266	*
	267	* Note that c always chases f until it reaches f.
	268	*
	269	* Dtf = (f - t)
	270	* Dtc = (c - t)
	271	*
	272	* Consider all cases:
	273	*
	274	* A) .....c..t..f..... Dtf < Dtc need to wait
	275	* B) .....c.....f..t.. Dtf > Dtc expired
	276	* C) ..t..c.....f..... Dtf > Dtc expired (Dct very large)
	277	*
	278	* Any case where f==c: always expired (for any t). Dtf == Dcf
	279	* Any case where t==c: always expired (for any f). Dtf >= Dtc (because Dtc==0)
	280	* Any case where t==f!=c: always wait. Dtf < Dtc (because Dtf==0,
	281	* Dtc!=0)
	282	*
	283	* Other cases:
	284	*
	285	* A) .....t..f..c..... Dtf < Dtc need to wait
	286	* A) .....f..c..t..... Dtf < Dtc need to wait
	287	* A) .....f..t..c..... Dtf > Dtc expired
	288	*
	289	* So:
	290	* Dtf >= Dtc implies EXPIRED (return true)
	291	* Dtf < Dtc implies WAIT (return false)
	292	*
	293	* Note: If t is expired then we cannot wait on it. We would wait
	294	* forever (hang the system).
	295	*
	296	* Note: do NOT get clever and remove the -thresh from both sides. It
	297	* is NOT the same.
	298	*
	299	* If future valueis zero, we have a client managed sync point. In that
	300	* case we do a direct comparison.
	301	*/
	302	if (!host1x_syncpt_client_managed(sp))
303	return future_val - thresh >= current_val - thresh;
304	else
305	return (s32)(current_val - thresh) >= 0;
306	}
307
6579324a TB	308	/* remove a wait pointed to by patch_addr */
	309	int host1x_syncpt_patch_wait(struct host1x_syncpt sp, void patch_addr)
	310	{
	311	return host1x_hw_syncpt_patch_wait(sp->host, sp, patch_addr);
	312	}
	313
75471687 TB	314	int host1x_syncpt_init(struct host1x *host)
	315	{
	316	struct host1x_syncpt *syncpt;
	317	int i;
	318
	319	syncpt = devm_kzalloc(host->dev, sizeof(syncpt) host->info->nb_pts,
	320	GFP_KERNEL);
	321	if (!syncpt)
	322	return -ENOMEM;
	323
	324	for (i = 0; i < host->info->nb_pts; ++i) {
	325	syncpt[i].id = i;
	326	syncpt[i].host = host;
	327	}
	328
	329	host->syncpt = syncpt;
	330
	331	host1x_syncpt_restore(host);
	332
6579324a TB	333	/* Allocate sync point to use for clearing waits for expired fences */
	334	host->nop_sp = _host1x_syncpt_alloc(host, NULL, 0);
	335	if (!host->nop_sp)
	336	return -ENOMEM;
	337
75471687 TB	338	return 0;
	339	}
	340
	341	struct host1x_syncpt host1x_syncpt_request(struct device dev,
	342	int client_managed)
	343	{
	344	struct host1x *host = dev_get_drvdata(dev->parent);
	345	return _host1x_syncpt_alloc(host, dev, client_managed);
	346	}
	347
	348	void host1x_syncpt_free(struct host1x_syncpt *sp)
	349	{
	350	if (!sp)
	351	return;
	352
	353	kfree(sp->name);
	354	sp->dev = NULL;
	355	sp->name = NULL;
	356	sp->client_managed = 0;
	357	}
	358
	359	void host1x_syncpt_deinit(struct host1x *host)
	360	{
	361	int i;
	362	struct host1x_syncpt *sp = host->syncpt;
	363	for (i = 0; i < host->info->nb_pts; i++, sp++)
	364	kfree(sp->name);
	365	}
	366
	367	int host1x_syncpt_nb_pts(struct host1x *host)
	368	{
	369	return host->info->nb_pts;
	370	}
	371
	372	int host1x_syncpt_nb_bases(struct host1x *host)
	373	{
	374	return host->info->nb_bases;
	375	}
	376
	377	int host1x_syncpt_nb_mlocks(struct host1x *host)
	378	{
	379	return host->info->nb_mlocks;
	380	}
	381
	382	struct host1x_syncpt host1x_syncpt_get(struct host1x host, u32 id)
	383	{
	384	if (host->info->nb_pts < id)
	385	return NULL;
	386	return host->syncpt + id;
	387	}