[mirror_ubuntu-hirsute-kernel.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_strap_peek(struct seq_file *m, void *data)
{
	struct drm_info_node *node = m->private;
	struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
	int ret;

	ret = pm_runtime_get_sync(drm->dev->dev);
	if (ret < 0 && ret != -EACCES)
		return ret;

	seq_printf(m, "0x%08x\n",
		   nvif_rd32(&drm->client.device.object, 0x101000));

	pm_runtime_mark_last_busy(drm->dev->dev);
	pm_runtime_put_autosuspend(drm->dev->dev);

	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 },
	{ "strap_peek", nouveau_debugfs_strap_peek, 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 nouveau_drm *drm = nouveau_drm(minor->dev);
	struct dentry *dentry;
	int i, ret;

	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;
	}

	ret = drm_debugfs_create_files(nouveau_debugfs_list,
				       NOUVEAU_DEBUGFS_ENTRIES,
				       minor->debugfs_root, minor);
	if (ret)
		return ret;

	/* Set the size of the vbios since we know it, and it's confusing to
	 * userspace if it wants to seek() but the file has a length of 0
	 */
	dentry = debugfs_lookup("vbios.rom", minor->debugfs_root);
	if (!dentry)
		return 0;

	d_inode(dentry)->i_size = drm->vbios.length;
	dput(dentry);

	return 0;
}

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
67287964 LP	49	static int
	50	nouveau_debugfs_strap_peek(struct seq_file m, void data)
	51	{
	52	struct drm_info_node *node = m->private;
	53	struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
	54	int ret;
	55
	56	ret = pm_runtime_get_sync(drm->dev->dev);
	57	if (ret < 0 && ret != -EACCES)
	58	return ret;
	59
	60	seq_printf(m, "0x%08x\n",
	61	nvif_rd32(&drm->client.device.object, 0x101000));
	62
	63	pm_runtime_mark_last_busy(drm->dev->dev);
	64	pm_runtime_put_autosuspend(drm->dev->dev);
	65
	66	return 0;
	67	}
	68
6e9fc177 KH	69	static int
	70	nouveau_debugfs_pstate_get(struct seq_file m, void data)
	71	{
1a54082a NT	72	struct drm_device *drm = m->private;
1a54082a NT	73	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
6e9fc177 KH	74	struct nvif_object *ctrl = &debugfs->ctrl;
	75	struct nvif_control_pstate_info_v0 info = {};
	76	int ret, i;
	77
	78	if (!debugfs)
	79	return -ENODEV;
	80
	81	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info));
	82	if (ret)
	83	return ret;
	84
	85	for (i = 0; i < info.count + 1; i++) {
	86	const s32 state = i < info.count ? i :
	87	NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT;
	88	struct nvif_control_pstate_attr_v0 attr = {
	89	.state = state,
	90	.index = 0,
	91	};
	92
	93	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
	94	&attr, sizeof(attr));
	95	if (ret)
	96	return ret;
	97
	98	if (i < info.count)
	99	seq_printf(m, "%02x:", attr.state);
	100	else
	101	seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" :
	102	info.pwrsrc == 1 ? "AC" : "--");
	103
	104	attr.index = 0;
	105	do {
	106	attr.state = state;
	107	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
	108	&attr, sizeof(attr));
	109	if (ret)
	110	return ret;
	111
	112	seq_printf(m, " %s %d", attr.name, attr.min);
	113	if (attr.min != attr.max)
	114	seq_printf(m, "-%d", attr.max);
	115	seq_printf(m, " %s", attr.unit);
	116	} while (attr.index);
	117
	118	if (state >= 0) {
	119	if (info.ustate_ac == state)
	120	seq_printf(m, " AC");
	121	if (info.ustate_dc == state)
	122	seq_printf(m, " DC");
	123	if (info.pstate == state)
	124	seq_printf(m, " *");
	125	} else {
	126	if (info.ustate_ac < -1)
	127	seq_printf(m, " AC");
	128	if (info.ustate_dc < -1)
	129	seq_printf(m, " DC");
	130	}
	131
	132	seq_printf(m, "\n");
	133	}
	134
	135	return 0;
	136	}
	137
138	static ssize_t
139	nouveau_debugfs_pstate_set(struct file file, const char __user ubuf,
140	size_t len, loff_t *offp)
141	{
142	struct seq_file *m = file->private_data;
1a54082a NT	143	struct drm_device *drm = m->private;
1a54082a NT	144	struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
6e9fc177 KH	145	struct nvif_object *ctrl = &debugfs->ctrl;
	146	struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
	147	char buf[32] = {}, tmp, cur = buf;
	148	long value, ret;
	149
	150	if (!debugfs)
	151	return -ENODEV;
	152
	153	if (len >= sizeof(buf))
	154	return -EINVAL;
	155
	156	if (copy_from_user(buf, ubuf, len))
	157	return -EFAULT;
	158
	159	if ((tmp = strchr(buf, '\n')))
	160	*tmp = '\0';
	161
	162	if (!strncasecmp(cur, "dc:", 3)) {
	163	args.pwrsrc = 0;
	164	cur += 3;
	165	} else
	166	if (!strncasecmp(cur, "ac:", 3)) {
	167	args.pwrsrc = 1;
	168	cur += 3;
	169	}
	170
	171	if (!strcasecmp(cur, "none"))
	172	args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
	173	else
	174	if (!strcasecmp(cur, "auto"))
	175	args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
	176	else {
	177	ret = kstrtol(cur, 16, &value);
	178	if (ret)
	179	return ret;
	180	args.ustate = value;
	181	}
	182
eaeb9010	183	ret = pm_runtime_get_sync(drm->dev);
909e9c9c	184	if (ret < 0 && ret != -EACCES)
eaeb9010	185	return ret;
6e9fc177	186	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
eaeb9010	187	pm_runtime_put_autosuspend(drm->dev);
6e9fc177 KH	188	if (ret < 0)
	189	return ret;
	190
	191	return len;
	192	}
	193
	194	static int
	195	nouveau_debugfs_pstate_open(struct inode inode, struct file file)
	196	{
	197	return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
	198	}
	199
	200	static const struct file_operations nouveau_pstate_fops = {
	201	.owner = THIS_MODULE,
	202	.open = nouveau_debugfs_pstate_open,
	203	.read = seq_read,
	204	.write = nouveau_debugfs_pstate_set,
	205	};
	206
33b903e8	207	static struct drm_info_list nouveau_debugfs_list[] = {
67287964 LP	208	{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
67287964 LP	209	{ "strap_peek", nouveau_debugfs_strap_peek, 0, NULL },
33b903e8 MS	210	};
	211	#define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)
	212
1b7ab1a1 KH	213	static const struct nouveau_debugfs_files {
	214	const char *name;
	215	const struct file_operations *fops;
6e9fc177 KH	216	} nouveau_debugfs_files[] = {
	217	{"pstate", &nouveau_pstate_fops},
	218	};
1b7ab1a1	219
33b903e8	220	int
56c101af	221	nouveau_drm_debugfs_init(struct drm_minor *minor)
33b903e8	222	{
6f5521da	223	struct nouveau_drm *drm = nouveau_drm(minor->dev);
1a54082a	224	struct dentry *dentry;
6f5521da	225	int i, ret;
1b7ab1a1 KH	226
1b7ab1a1 KH	227	for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) {
1a54082a NT	228	dentry = debugfs_create_file(nouveau_debugfs_files[i].name,
	229	S_IRUGO \| S_IWUSR,
	230	minor->debugfs_root, minor->dev,
	231	nouveau_debugfs_files[i].fops);
	232	if (!dentry)
	233	return -ENOMEM;
1b7ab1a1 KH	234	}
1b7ab1a1 KH	235
6f5521da LP	236	ret = drm_debugfs_create_files(nouveau_debugfs_list,
	237	NOUVEAU_DEBUGFS_ENTRIES,
	238	minor->debugfs_root, minor);
	239	if (ret)
	240	return ret;
	241
	242	/* Set the size of the vbios since we know it, and it's confusing to
	243	* userspace if it wants to seek() but the file has a length of 0
	244	*/
	245	dentry = debugfs_lookup("vbios.rom", minor->debugfs_root);
	246	if (!dentry)
	247	return 0;
	248
	249	d_inode(dentry)->i_size = drm->vbios.length;
	250	dput(dentry);
	251
	252	return 0;
33b903e8 MS	253	}
33b903e8 MS	254
b126a200 KH	255	int
	256	nouveau_debugfs_init(struct nouveau_drm *drm)
	257	{
	258	int ret;
	259
	260	drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL);
	261	if (!drm->debugfs)
	262	return -ENOMEM;
	263
1167c6bc BS	264	ret = nvif_object_init(&drm->client.device.object, 0,
	265	NVIF_CLASS_CONTROL, NULL, 0,
	266	&drm->debugfs->ctrl);
b126a200 KH	267	if (ret)
	268	return ret;
	269
	270	return 0;
	271	}
	272
	273	void
	274	nouveau_debugfs_fini(struct nouveau_drm *drm)
	275	{
	276	if (drm->debugfs && drm->debugfs->ctrl.priv)
	277	nvif_object_fini(&drm->debugfs->ctrl);
	278
	279	kfree(drm->debugfs);
	280	drm->debugfs = NULL;
	281	}