Contributors: 31
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Daniel Vetter |
1273 |
61.41% |
25 |
28.09% |
| Dave Airlie |
254 |
12.25% |
14 |
15.73% |
| Rob Clark |
158 |
7.62% |
8 |
8.99% |
| Dave Stevenson |
85 |
4.10% |
1 |
1.12% |
| Keith Packard |
61 |
2.94% |
3 |
3.37% |
| Maarten Lankhorst |
52 |
2.51% |
4 |
4.49% |
| Michal Orzel |
30 |
1.45% |
1 |
1.12% |
| Eric Anholt |
17 |
0.82% |
3 |
3.37% |
| Jesse Barnes |
15 |
0.72% |
2 |
2.25% |
| Thierry Reding |
12 |
0.58% |
2 |
2.25% |
| Paulo Zanoni |
12 |
0.58% |
2 |
2.25% |
| Jani Nikula |
11 |
0.53% |
1 |
1.12% |
| Simon Ser |
11 |
0.53% |
1 |
1.12% |
| Laurent Pinchart |
11 |
0.53% |
2 |
2.25% |
| Russell King |
10 |
0.48% |
1 |
1.12% |
| Ilia Mirkin |
10 |
0.48% |
1 |
1.12% |
| Chris Wilson |
8 |
0.39% |
3 |
3.37% |
| Ville Syrjälä |
7 |
0.34% |
2 |
2.25% |
| Noralf Trönnes |
5 |
0.24% |
1 |
1.12% |
| Shayenne da Luz Moura |
4 |
0.19% |
1 |
1.12% |
| Boris Brezillon |
4 |
0.19% |
1 |
1.12% |
| Sam Ravnborg |
4 |
0.19% |
1 |
1.12% |
| Tejun Heo |
3 |
0.14% |
1 |
1.12% |
| Jyri Sarha |
3 |
0.14% |
1 |
1.12% |
| Dhinakaran Pandiyan |
3 |
0.14% |
1 |
1.12% |
| Paul Gortmaker |
3 |
0.14% |
1 |
1.12% |
| Thomas Hellstrom |
2 |
0.10% |
1 |
1.12% |
| Peter Zijlstra |
2 |
0.10% |
1 |
1.12% |
| Mauro Carvalho Chehab |
1 |
0.05% |
1 |
1.12% |
| caihuoqing |
1 |
0.05% |
1 |
1.12% |
| Gustavo Padovan |
1 |
0.05% |
1 |
1.12% |
| Total |
2073 |
|
89 |
|
/*
* Copyright (c) 2016 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <linux/export.h>
#include <linux/uaccess.h>
#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include <drm/drm_device.h>
#include <drm/drm_file.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_print.h>
#include "drm_crtc_internal.h"
/*
* Internal function to assign a slot in the object idr and optionally
* register the object into the idr.
*/
int __drm_mode_object_add(struct drm_device *dev, struct drm_mode_object *obj,
uint32_t obj_type, bool register_obj,
void (*obj_free_cb)(struct kref *kref))
{
int ret;
WARN_ON(!dev->driver->load && dev->registered && !obj_free_cb);
mutex_lock(&dev->mode_config.idr_mutex);
ret = idr_alloc(&dev->mode_config.object_idr, register_obj ? obj : NULL,
1, 0, GFP_KERNEL);
if (ret >= 0) {
/*
* Set up the object linking under the protection of the idr
* lock so that other users can't see inconsistent state.
*/
obj->id = ret;
obj->type = obj_type;
if (obj_free_cb) {
obj->free_cb = obj_free_cb;
kref_init(&obj->refcount);
}
}
mutex_unlock(&dev->mode_config.idr_mutex);
return ret < 0 ? ret : 0;
}
/**
* drm_mode_object_add - allocate a new modeset identifier
* @dev: DRM device
* @obj: object pointer, used to generate unique ID
* @obj_type: object type
*
* Create a unique identifier based on @ptr in @dev's identifier space. Used
* for tracking modes, CRTCs and connectors.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_mode_object_add(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
{
return __drm_mode_object_add(dev, obj, obj_type, true, NULL);
}
void drm_mode_object_register(struct drm_device *dev,
struct drm_mode_object *obj)
{
mutex_lock(&dev->mode_config.idr_mutex);
idr_replace(&dev->mode_config.object_idr, obj, obj->id);
mutex_unlock(&dev->mode_config.idr_mutex);
}
/**
* drm_mode_object_unregister - free a modeset identifier
* @dev: DRM device
* @object: object to free
*
* Free @id from @dev's unique identifier pool.
* This function can be called multiple times, and guards against
* multiple removals.
* These modeset identifiers are _not_ reference counted. Hence don't use this
* for reference counted modeset objects like framebuffers.
*/
void drm_mode_object_unregister(struct drm_device *dev,
struct drm_mode_object *object)
{
WARN_ON(!dev->driver->load && dev->registered && !object->free_cb);
mutex_lock(&dev->mode_config.idr_mutex);
if (object->id) {
idr_remove(&dev->mode_config.object_idr, object->id);
object->id = 0;
}
mutex_unlock(&dev->mode_config.idr_mutex);
}
/**
* drm_mode_object_lease_required - check types which must be leased to be used
* @type: type of object
*
* Returns whether the provided type of drm_mode_object must
* be owned or leased to be used by a process.
*/
bool drm_mode_object_lease_required(uint32_t type)
{
switch(type) {
case DRM_MODE_OBJECT_CRTC:
case DRM_MODE_OBJECT_CONNECTOR:
case DRM_MODE_OBJECT_PLANE:
return true;
default:
return false;
}
}
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
mutex_lock(&dev->mode_config.idr_mutex);
obj = idr_find(&dev->mode_config.object_idr, id);
if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
obj = NULL;
if (obj && obj->id != id)
obj = NULL;
if (obj && drm_mode_object_lease_required(obj->type) &&
!_drm_lease_held(file_priv, obj->id)) {
drm_dbg_kms(dev, "[OBJECT:%d] not included in lease", id);
obj = NULL;
}
if (obj && obj->free_cb) {
if (!kref_get_unless_zero(&obj->refcount))
obj = NULL;
}
mutex_unlock(&dev->mode_config.idr_mutex);
return obj;
}
/**
* drm_mode_object_find - look up a drm object with static lifetime
* @dev: drm device
* @file_priv: drm file
* @id: id of the mode object
* @type: type of the mode object
*
* This function is used to look up a modeset object. It will acquire a
* reference for reference counted objects. This reference must be dropped again
* by callind drm_mode_object_put().
*/
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
obj = __drm_mode_object_find(dev, file_priv, id, type);
return obj;
}
EXPORT_SYMBOL(drm_mode_object_find);
/**
* drm_mode_object_put - release a mode object reference
* @obj: DRM mode object
*
* This function decrements the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. This is used to drop references
* acquired with drm_mode_object_get().
*/
void drm_mode_object_put(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, kref_read(&obj->refcount));
kref_put(&obj->refcount, obj->free_cb);
}
}
EXPORT_SYMBOL(drm_mode_object_put);
/**
* drm_mode_object_get - acquire a mode object reference
* @obj: DRM mode object
*
* This function increments the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. References should be dropped again
* by calling drm_mode_object_put().
*/
void drm_mode_object_get(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, kref_read(&obj->refcount));
kref_get(&obj->refcount);
}
}
EXPORT_SYMBOL(drm_mode_object_get);
/**
* drm_object_attach_property - attach a property to a modeset object
* @obj: drm modeset object
* @property: property to attach
* @init_val: initial value of the property
*
* This attaches the given property to the modeset object with the given initial
* value. Currently this function cannot fail since the properties are stored in
* a statically sized array.
*
* Note that all properties must be attached before the object itself is
* registered and accessible from userspace.
*/
void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t init_val)
{
int count = obj->properties->count;
struct drm_device *dev = property->dev;
if (obj->type == DRM_MODE_OBJECT_CONNECTOR) {
struct drm_connector *connector = obj_to_connector(obj);
WARN_ON(!dev->driver->load &&
connector->registration_state == DRM_CONNECTOR_REGISTERED);
} else {
WARN_ON(!dev->driver->load && dev->registered);
}
if (count == DRM_OBJECT_MAX_PROPERTY) {
WARN(1, "Failed to attach object property (type: 0x%x). Please "
"increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
"you see this message on the same object type.\n",
obj->type);
return;
}
obj->properties->properties[count] = property;
obj->properties->values[count] = init_val;
obj->properties->count++;
}
EXPORT_SYMBOL(drm_object_attach_property);
/**
* drm_object_property_set_value - set the value of a property
* @obj: drm mode object to set property value for
* @property: property to set
* @val: value the property should be set to
*
* This function sets a given property on a given object. This function only
* changes the software state of the property, it does not call into the
* driver's ->set_property callback.
*
* Note that atomic drivers should not have any need to call this, the core will
* ensure consistency of values reported back to userspace through the
* appropriate ->atomic_get_property callback. Only legacy drivers should call
* this function to update the tracked value (after clamping and other
* restrictions have been applied).
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t val)
{
int i;
WARN_ON(drm_drv_uses_atomic_modeset(property->dev) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE));
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
obj->properties->values[i] = val;
return 0;
}
}
return -EINVAL;
}
EXPORT_SYMBOL(drm_object_property_set_value);
static int __drm_object_property_get_prop_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *val)
{
int i;
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
*val = obj->properties->values[i];
return 0;
}
}
return -EINVAL;
}
static int __drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *val)
{
/* read-only properties bypass atomic mechanism and still store
* their value in obj->properties->values[].. mostly to avoid
* having to deal w/ EDID and similar props in atomic paths:
*/
if (drm_drv_uses_atomic_modeset(property->dev) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE))
return drm_atomic_get_property(obj, property, val);
return __drm_object_property_get_prop_value(obj, property, val);
}
/**
* drm_object_property_get_value - retrieve the value of a property
* @obj: drm mode object to get property value from
* @property: property to retrieve
* @val: storage for the property value
*
* This function retrieves the softare state of the given property for the given
* property. Since there is no driver callback to retrieve the current property
* value this might be out of sync with the hardware, depending upon the driver
* and property.
*
* Atomic drivers should never call this function directly, the core will read
* out property values through the various ->atomic_get_property callbacks.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t *val)
{
WARN_ON(drm_drv_uses_atomic_modeset(property->dev));
return __drm_object_property_get_value(obj, property, val);
}
EXPORT_SYMBOL(drm_object_property_get_value);
/**
* drm_object_property_get_default_value - retrieve the default value of a
* property when in atomic mode.
* @obj: drm mode object to get property value from
* @property: property to retrieve
* @val: storage for the property value
*
* This function retrieves the default state of the given property as passed in
* to drm_object_attach_property
*
* Only atomic drivers should call this function directly, as for non-atomic
* drivers it will return the current value.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_get_default_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *val)
{
WARN_ON(!drm_drv_uses_atomic_modeset(property->dev));
return __drm_object_property_get_prop_value(obj, property, val);
}
EXPORT_SYMBOL(drm_object_property_get_default_value);
/* helper for getconnector and getproperties ioctls */
int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props)
{
int i, ret, count;
for (i = 0, count = 0; i < obj->properties->count; i++) {
struct drm_property *prop = obj->properties->properties[i];
uint64_t val;
if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
continue;
if (*arg_count_props > count) {
ret = __drm_object_property_get_value(obj, prop, &val);
if (ret)
return ret;
if (put_user(prop->base.id, prop_ptr + count))
return -EFAULT;
if (put_user(val, prop_values + count))
return -EFAULT;
}
count++;
}
*arg_count_props = count;
return 0;
}
/**
* drm_mode_obj_get_properties_ioctl - get the current value of a object's property
* @dev: DRM device
* @data: ioctl data
* @file_priv: DRM file info
*
* This function retrieves the current value for an object's property. Compared
* to the connector specific ioctl this one is extended to also work on crtc and
* plane objects.
*
* Called by the user via ioctl.
*
* Returns:
* Zero on success, negative errno on failure.
*/
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_get_properties *arg = data;
struct drm_mode_object *obj;
struct drm_modeset_acquire_ctx ctx;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
obj = drm_mode_object_find(dev, file_priv, arg->obj_id, arg->obj_type);
if (!obj) {
ret = -ENOENT;
goto out;
}
if (!obj->properties) {
ret = -EINVAL;
goto out_unref;
}
ret = drm_mode_object_get_properties(obj, file_priv->atomic,
(uint32_t __user *)(unsigned long)(arg->props_ptr),
(uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
&arg->count_props);
out_unref:
drm_mode_object_put(obj);
out:
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return ret;
}
struct drm_property *drm_mode_obj_find_prop_id(struct drm_mode_object *obj,
uint32_t prop_id)
{
int i;
for (i = 0; i < obj->properties->count; i++)
if (obj->properties->properties[i]->base.id == prop_id)
return obj->properties->properties[i];
return NULL;
}
static int set_property_legacy(struct drm_mode_object *obj,
struct drm_property *prop,
uint64_t prop_value)
{
struct drm_device *dev = prop->dev;
struct drm_mode_object *ref;
struct drm_modeset_acquire_ctx ctx;
int ret = -EINVAL;
if (!drm_property_change_valid_get(prop, prop_value, &ref))
return -EINVAL;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
switch (obj->type) {
case DRM_MODE_OBJECT_CONNECTOR:
ret = drm_connector_set_obj_prop(obj, prop, prop_value);
break;
case DRM_MODE_OBJECT_CRTC:
ret = drm_mode_crtc_set_obj_prop(obj, prop, prop_value);
break;
case DRM_MODE_OBJECT_PLANE:
ret = drm_mode_plane_set_obj_prop(obj_to_plane(obj),
prop, prop_value);
break;
}
drm_property_change_valid_put(prop, ref);
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return ret;
}
static int set_property_atomic(struct drm_mode_object *obj,
struct drm_file *file_priv,
struct drm_property *prop,
uint64_t prop_value)
{
struct drm_device *dev = prop->dev;
struct drm_atomic_state *state;
struct drm_modeset_acquire_ctx ctx;
int ret;
state = drm_atomic_state_alloc(dev);
if (!state)
return -ENOMEM;
drm_modeset_acquire_init(&ctx, 0);
state->acquire_ctx = &ctx;
retry:
if (prop == state->dev->mode_config.dpms_property) {
if (obj->type != DRM_MODE_OBJECT_CONNECTOR) {
ret = -EINVAL;
goto out;
}
ret = drm_atomic_connector_commit_dpms(state,
obj_to_connector(obj),
prop_value);
} else {
ret = drm_atomic_set_property(state, file_priv, obj, prop, prop_value);
if (ret)
goto out;
ret = drm_atomic_commit(state);
}
out:
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(&ctx);
goto retry;
}
drm_atomic_state_put(state);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
return ret;
}
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_set_property *arg = data;
struct drm_mode_object *arg_obj;
struct drm_property *property;
int ret = -EINVAL;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
arg_obj = drm_mode_object_find(dev, file_priv, arg->obj_id, arg->obj_type);
if (!arg_obj)
return -ENOENT;
if (!arg_obj->properties)
goto out_unref;
property = drm_mode_obj_find_prop_id(arg_obj, arg->prop_id);
if (!property)
goto out_unref;
if (drm_drv_uses_atomic_modeset(property->dev))
ret = set_property_atomic(arg_obj, file_priv, property, arg->value);
else
ret = set_property_legacy(arg_obj, property, arg->value);
out_unref:
drm_mode_object_put(arg_obj);
return ret;
}