[thirdparty/kernel/stable.git] / drivers / gpu / drm / nouveau / nouveau_debugfs.c

/*
 * Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

/*
 * Authors:
 *  Ben Skeggs <bskeggs@redhat.com>
 */

#include <linux/debugfs.h>
#include <nvif/class.h>
#include <nvif/if0001.h>
#include "nouveau_debugfs.h"
#include "nouveau_drv.h"

static int
nouveau_debugfs_vbios_image(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
	int i;

	for (i = 0; i < drm->vbios.length; i++)
		seq_printf(m, "%c", drm->vbios.data[i]);
	return 0;
}

static int
nouveau_debugfs_pstate_get(struct seq_file *m, void *data)
{
	struct drm_device *drm = m->private;
	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
	struct nvif_object *ctrl = &debugfs->ctrl;
	struct nvif_control_pstate_info_v0 info = {};
	int ret, i;

	if (!debugfs)
		return -ENODEV;

	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info));
	if (ret)
		return ret;

	for (i = 0; i < info.count + 1; i++) {
		const s32 state = i < info.count ? i :
			NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT;
		struct nvif_control_pstate_attr_v0 attr = {
			.state = state,
			.index = 0,
		};

		ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
				&attr, sizeof(attr));
		if (ret)
			return ret;

		if (i < info.count)
			seq_printf(m, "%02x:", attr.state);
		else
			seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" :
					     info.pwrsrc == 1 ? "AC" : "--");

		attr.index = 0;
		do {
			attr.state = state;
			ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
					&attr, sizeof(attr));
			if (ret)
				return ret;

			seq_printf(m, " %s %d", attr.name, attr.min);
			if (attr.min != attr.max)
				seq_printf(m, "-%d", attr.max);
			seq_printf(m, " %s", attr.unit);
		} while (attr.index);

		if (state >= 0) {
			if (info.ustate_ac == state)
				seq_printf(m, " AC");
			if (info.ustate_dc == state)
				seq_printf(m, " DC");
			if (info.pstate == state)
				seq_printf(m, " *");
		} else {
			if (info.ustate_ac < -1)
				seq_printf(m, " AC");
			if (info.ustate_dc < -1)
				seq_printf(m, " DC");
		}

		seq_printf(m, "\n");
	}

	return 0;
}

static ssize_t
nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf,
			   size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_device *drm = m->private;
	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
	struct nvif_object *ctrl = &debugfs->ctrl;
	struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
	char buf[32] = {}, *tmp, *cur = buf;
	long value, ret;

	if (!debugfs)
		return -ENODEV;

	if (len >= sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, ubuf, len))
		return -EFAULT;

	if ((tmp = strchr(buf, '\n')))
		*tmp = '\0';

	if (!strncasecmp(cur, "dc:", 3)) {
		args.pwrsrc = 0;
		cur += 3;
	} else
	if (!strncasecmp(cur, "ac:", 3)) {
		args.pwrsrc = 1;
		cur += 3;
	}

	if (!strcasecmp(cur, "none"))
		args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
	else
	if (!strcasecmp(cur, "auto"))
		args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
	else {
		ret = kstrtol(cur, 16, &value);
		if (ret)
			return ret;
		args.ustate = value;
	}

	ret = pm_runtime_get_sync(drm->dev);
	if (ret < 0 && ret != -EACCES)
		return ret;
	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
	pm_runtime_put_autosuspend(drm->dev);
	if (ret < 0)
		return ret;

	return len;
}

static int
nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
{
	return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
}

static const struct file_operations nouveau_pstate_fops = {
	.owner = THIS_MODULE,
	.open = nouveau_debugfs_pstate_open,
	.read = seq_read,
	.write = nouveau_debugfs_pstate_set,
};

static struct drm_info_list nouveau_debugfs_list[] = {
	{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
};
#define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)

static const struct nouveau_debugfs_files {
	const char *name;
	const struct file_operations *fops;
} nouveau_debugfs_files[] = {
	{"pstate", &nouveau_pstate_fops},
};

int
nouveau_drm_debugfs_init(struct drm_minor *minor)
{
	struct dentry *dentry;
	int i;

	for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) {
		dentry = debugfs_create_file(nouveau_debugfs_files[i].name,
					     S_IRUGO | S_IWUSR,
					     minor->debugfs_root, minor->dev,
					     nouveau_debugfs_files[i].fops);
		if (!dentry)
			return -ENOMEM;
	}

	return drm_debugfs_create_files(nouveau_debugfs_list,
					NOUVEAU_DEBUGFS_ENTRIES,
					minor->debugfs_root, minor);
}

int
nouveau_debugfs_init(struct nouveau_drm *drm)
{
	int ret;

	drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL);
	if (!drm->debugfs)
		return -ENOMEM;

	ret = nvif_object_init(&drm->client.device.object, 0,
			       NVIF_CLASS_CONTROL, NULL, 0,
			       &drm->debugfs->ctrl);
	if (ret)
		return ret;

	return 0;
}

void
nouveau_debugfs_fini(struct nouveau_drm *drm)
{
	if (drm->debugfs && drm->debugfs->ctrl.priv)
		nvif_object_fini(&drm->debugfs->ctrl);

	kfree(drm->debugfs);
	drm->debugfs = NULL;
}
Commit	Line	Data
33b903e8 MS	1	/*
	2	* Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining
	5	* a copy of this software and associated documentation files (the
	6	* "Software"), to deal in the Software without restriction, including
	7	* without limitation the rights to use, copy, modify, merge, publish,
	8	* distribute, sublicense, and/or sell copies of the Software, and to
	9	* permit persons to whom the Software is furnished to do so, subject to
	10	* the following conditions:
	11	*
	12	* The above copyright notice and this permission notice (including the
	13	* next paragraph) shall be included in all copies or substantial
	14	* portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	17	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	18	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	19	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	20	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	21	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	22	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	23	*
	24	*/
	25
	26	/*
	27	* Authors:
	28	* Ben Skeggs <bskeggs@redhat.com>
	29	*/
	30
1b7ab1a1	31	#include <linux/debugfs.h>
b126a200	32	#include <nvif/class.h>
6e9fc177	33	#include <nvif/if0001.h>
33b903e8	34	#include "nouveau_debugfs.h"
4dc28134	35	#include "nouveau_drv.h"
33b903e8 MS	36
	37	static int
	38	nouveau_debugfs_vbios_image(struct seq_file m, void data)
	39	{
	40	struct drm_info_node node = (struct drm_info_node ) m->private;
	41	struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
	42	int i;
	43
	44	for (i = 0; i < drm->vbios.length; i++)
	45	seq_printf(m, "%c", drm->vbios.data[i]);
	46	return 0;
	47	}
	48
6e9fc177 KH	49	static int
	50	nouveau_debugfs_pstate_get(struct seq_file m, void data)
	51	{
1a54082a NT	52	struct drm_device *drm = m->private;
1a54082a NT	53	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
6e9fc177 KH	54	struct nvif_object *ctrl = &debugfs->ctrl;
	55	struct nvif_control_pstate_info_v0 info = {};
	56	int ret, i;
	57
	58	if (!debugfs)
	59	return -ENODEV;
	60
	61	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info));
	62	if (ret)
	63	return ret;
	64
	65	for (i = 0; i < info.count + 1; i++) {
	66	const s32 state = i < info.count ? i :
	67	NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT;
	68	struct nvif_control_pstate_attr_v0 attr = {
	69	.state = state,
	70	.index = 0,
	71	};
	72
	73	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
	74	&attr, sizeof(attr));
	75	if (ret)
	76	return ret;
	77
	78	if (i < info.count)
	79	seq_printf(m, "%02x:", attr.state);
	80	else
	81	seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" :
	82	info.pwrsrc == 1 ? "AC" : "--");
	83
	84	attr.index = 0;
	85	do {
	86	attr.state = state;
	87	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
	88	&attr, sizeof(attr));
	89	if (ret)
	90	return ret;
	91
	92	seq_printf(m, " %s %d", attr.name, attr.min);
	93	if (attr.min != attr.max)
	94	seq_printf(m, "-%d", attr.max);
	95	seq_printf(m, " %s", attr.unit);
	96	} while (attr.index);
	97
	98	if (state >= 0) {
	99	if (info.ustate_ac == state)
	100	seq_printf(m, " AC");
	101	if (info.ustate_dc == state)
	102	seq_printf(m, " DC");
	103	if (info.pstate == state)
	104	seq_printf(m, " *");
	105	} else {
	106	if (info.ustate_ac < -1)
	107	seq_printf(m, " AC");
	108	if (info.ustate_dc < -1)
	109	seq_printf(m, " DC");
	110	}
	111
	112	seq_printf(m, "\n");
	113	}
	114
	115	return 0;
	116	}
	117
118	static ssize_t
119	nouveau_debugfs_pstate_set(struct file file, const char __user ubuf,
120	size_t len, loff_t *offp)
121	{
122	struct seq_file *m = file->private_data;
1a54082a NT	123	struct drm_device *drm = m->private;
1a54082a NT	124	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
6e9fc177 KH	125	struct nvif_object *ctrl = &debugfs->ctrl;
	126	struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
	127	char buf[32] = {}, tmp, cur = buf;
	128	long value, ret;
	129
	130	if (!debugfs)
	131	return -ENODEV;
	132
	133	if (len >= sizeof(buf))
	134	return -EINVAL;
	135
	136	if (copy_from_user(buf, ubuf, len))
	137	return -EFAULT;
	138
	139	if ((tmp = strchr(buf, '\n')))
	140	*tmp = '\0';
	141
	142	if (!strncasecmp(cur, "dc:", 3)) {
	143	args.pwrsrc = 0;
	144	cur += 3;
	145	} else
	146	if (!strncasecmp(cur, "ac:", 3)) {
	147	args.pwrsrc = 1;
	148	cur += 3;
	149	}
	150
	151	if (!strcasecmp(cur, "none"))
	152	args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
	153	else
	154	if (!strcasecmp(cur, "auto"))
	155	args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
	156	else {
	157	ret = kstrtol(cur, 16, &value);
	158	if (ret)
	159	return ret;
	160	args.ustate = value;
	161	}
	162
7b549a07	163	ret = pm_runtime_get_sync(drm->dev);
19525f7b	164	if (ret < 0 && ret != -EACCES)
7b549a07	165	return ret;
6e9fc177	166	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
7b549a07	167	pm_runtime_put_autosuspend(drm->dev);
6e9fc177 KH	168	if (ret < 0)
	169	return ret;
	170
	171	return len;
	172	}
	173
	174	static int
	175	nouveau_debugfs_pstate_open(struct inode inode, struct file file)
	176	{
	177	return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
	178	}
	179
	180	static const struct file_operations nouveau_pstate_fops = {
	181	.owner = THIS_MODULE,
	182	.open = nouveau_debugfs_pstate_open,
	183	.read = seq_read,
	184	.write = nouveau_debugfs_pstate_set,
	185	};
	186
33b903e8 MS	187	static struct drm_info_list nouveau_debugfs_list[] = {
	188	{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
	189	};
	190	#define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)
	191
1b7ab1a1 KH	192	static const struct nouveau_debugfs_files {
	193	const char *name;
	194	const struct file_operations *fops;
6e9fc177 KH	195	} nouveau_debugfs_files[] = {
	196	{"pstate", &nouveau_pstate_fops},
	197	};
1b7ab1a1	198
33b903e8	199	int
56c101af	200	nouveau_drm_debugfs_init(struct drm_minor *minor)
33b903e8	201	{
1a54082a NT	202	struct dentry *dentry;
1a54082a NT	203	int i;
1b7ab1a1 KH	204
1b7ab1a1 KH	205	for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) {
1a54082a NT	206	dentry = debugfs_create_file(nouveau_debugfs_files[i].name,
	207	S_IRUGO \| S_IWUSR,
	208	minor->debugfs_root, minor->dev,
	209	nouveau_debugfs_files[i].fops);
	210	if (!dentry)
	211	return -ENOMEM;
1b7ab1a1 KH	212	}
	213
	214	return drm_debugfs_create_files(nouveau_debugfs_list,
	215	NOUVEAU_DEBUGFS_ENTRIES,
	216	minor->debugfs_root, minor);
33b903e8 MS	217	}
33b903e8 MS	218
b126a200 KH	219	int
	220	nouveau_debugfs_init(struct nouveau_drm *drm)
	221	{
	222	int ret;
	223
	224	drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL);
	225	if (!drm->debugfs)
	226	return -ENOMEM;
	227
1167c6bc BS	228	ret = nvif_object_init(&drm->client.device.object, 0,
	229	NVIF_CLASS_CONTROL, NULL, 0,
	230	&drm->debugfs->ctrl);
b126a200 KH	231	if (ret)
	232	return ret;
	233
	234	return 0;
	235	}
	236
	237	void
	238	nouveau_debugfs_fini(struct nouveau_drm *drm)
	239	{
	240	if (drm->debugfs && drm->debugfs->ctrl.priv)
	241	nvif_object_fini(&drm->debugfs->ctrl);
	242
	243	kfree(drm->debugfs);
	244	drm->debugfs = NULL;
	245	}