blob: 2735a5847ffadc1bcbbcda8c14b1d18d4e7100f5 [file] [log] [blame]
/*
* 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 <drm/drm_mode_config.h>
#include <drm/drmP.h>
#include "drm_crtc_internal.h"
#include "drm_internal.h"
int drm_modeset_register_all(struct drm_device *dev)
{
int ret;
ret = drm_plane_register_all(dev);
if (ret)
goto err_plane;
ret = drm_crtc_register_all(dev);
if (ret)
goto err_crtc;
ret = drm_encoder_register_all(dev);
if (ret)
goto err_encoder;
ret = drm_connector_register_all(dev);
if (ret)
goto err_connector;
return 0;
err_connector:
drm_encoder_unregister_all(dev);
err_encoder:
drm_crtc_unregister_all(dev);
err_crtc:
drm_plane_unregister_all(dev);
err_plane:
return ret;
}
void drm_modeset_unregister_all(struct drm_device *dev)
{
drm_connector_unregister_all(dev);
drm_encoder_unregister_all(dev);
drm_crtc_unregister_all(dev);
drm_plane_unregister_all(dev);
}
/**
* drm_mode_getresources - get graphics configuration
* @dev: drm device for the ioctl
* @data: data pointer for the ioctl
* @file_priv: drm file for the ioctl call
*
* Construct a set of configuration description structures and return
* them to the user, including CRTC, connector and framebuffer configuration.
*
* Called by the user via ioctl.
*
* Returns:
* Zero on success, negative errno on failure.
*/
int drm_mode_getresources(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_card_res *card_res = data;
struct list_head *lh;
struct drm_framebuffer *fb;
struct drm_connector *connector;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
int ret = 0;
int connector_count = 0;
int crtc_count = 0;
int fb_count = 0;
int encoder_count = 0;
int copied = 0;
uint32_t __user *fb_id;
uint32_t __user *crtc_id;
uint32_t __user *connector_id;
uint32_t __user *encoder_id;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
mutex_lock(&file_priv->fbs_lock);
/*
* For the non-control nodes we need to limit the list of resources
* by IDs in the group list for this node
*/
list_for_each(lh, &file_priv->fbs)
fb_count++;
/* handle this in 4 parts */
/* FBs */
if (card_res->count_fbs >= fb_count) {
copied = 0;
fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
list_for_each_entry(fb, &file_priv->fbs, filp_head) {
if (put_user(fb->base.id, fb_id + copied)) {
mutex_unlock(&file_priv->fbs_lock);
return -EFAULT;
}
copied++;
}
}
card_res->count_fbs = fb_count;
mutex_unlock(&file_priv->fbs_lock);
/* mode_config.mutex protects the connector list against e.g. DP MST
* connector hot-adding. CRTC/Plane lists are invariant. */
mutex_lock(&dev->mode_config.mutex);
drm_for_each_crtc(crtc, dev)
crtc_count++;
drm_for_each_connector(connector, dev)
connector_count++;
drm_for_each_encoder(encoder, dev)
encoder_count++;
card_res->max_height = dev->mode_config.max_height;
card_res->min_height = dev->mode_config.min_height;
card_res->max_width = dev->mode_config.max_width;
card_res->min_width = dev->mode_config.min_width;
/* CRTCs */
if (card_res->count_crtcs >= crtc_count) {
copied = 0;
crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
drm_for_each_crtc(crtc, dev) {
if (put_user(crtc->base.id, crtc_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_crtcs = crtc_count;
/* Encoders */
if (card_res->count_encoders >= encoder_count) {
copied = 0;
encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
drm_for_each_encoder(encoder, dev) {
if (put_user(encoder->base.id, encoder_id +
copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_encoders = encoder_count;
/* Connectors */
if (card_res->count_connectors >= connector_count) {
copied = 0;
connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
drm_for_each_connector(connector, dev) {
if (put_user(connector->base.id,
connector_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_connectors = connector_count;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_config_reset - call ->reset callbacks
* @dev: drm device
*
* This functions calls all the crtc's, encoder's and connector's ->reset
* callback. Drivers can use this in e.g. their driver load or resume code to
* reset hardware and software state.
*/
void drm_mode_config_reset(struct drm_device *dev)
{
struct drm_crtc *crtc;
struct drm_plane *plane;
struct drm_encoder *encoder;
struct drm_connector *connector;
drm_for_each_plane(plane, dev)
if (plane->funcs->reset)
plane->funcs->reset(plane);
drm_for_each_crtc(crtc, dev)
if (crtc->funcs->reset)
crtc->funcs->reset(crtc);
drm_for_each_encoder(encoder, dev)
if (encoder->funcs->reset)
encoder->funcs->reset(encoder);
mutex_lock(&dev->mode_config.mutex);
drm_for_each_connector(connector, dev)
if (connector->funcs->reset)
connector->funcs->reset(connector);
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_mode_config_reset);
/*
* Global properties
*/
static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
{ DRM_PLANE_TYPE_OVERLAY, "Overlay" },
{ DRM_PLANE_TYPE_PRIMARY, "Primary" },
{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
};
static int drm_mode_create_standard_properties(struct drm_device *dev)
{
struct drm_property *prop;
int ret;
ret = drm_connector_create_standard_properties(dev);
if (ret)
return ret;
prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
"type", drm_plane_type_enum_list,
ARRAY_SIZE(drm_plane_type_enum_list));
if (!prop)
return -ENOMEM;
dev->mode_config.plane_type_property = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_X", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_src_x = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_Y", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_src_y = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_W", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_src_w = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_H", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_src_h = prop;
prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
"CRTC_X", INT_MIN, INT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_crtc_x = prop;
prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
"CRTC_Y", INT_MIN, INT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_crtc_y = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"CRTC_W", 0, INT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_crtc_w = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"CRTC_H", 0, INT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_crtc_h = prop;
prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
"FB_ID", DRM_MODE_OBJECT_FB);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_fb_id = prop;
prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
"IN_FENCE_FD", -1, INT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_in_fence_fd = prop;
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"OUT_FENCE_PTR", 0, U64_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_out_fence_ptr = prop;
prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
"CRTC_ID", DRM_MODE_OBJECT_CRTC);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_crtc_id = prop;
prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
"ACTIVE");
if (!prop)
return -ENOMEM;
dev->mode_config.prop_active = prop;
prop = drm_property_create(dev,
DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
"MODE_ID", 0);
if (!prop)
return -ENOMEM;
dev->mode_config.prop_mode_id = prop;
prop = drm_property_create(dev,
DRM_MODE_PROP_BLOB,
"DEGAMMA_LUT", 0);
if (!prop)
return -ENOMEM;
dev->mode_config.degamma_lut_property = prop;
prop = drm_property_create_range(dev,
DRM_MODE_PROP_IMMUTABLE,
"DEGAMMA_LUT_SIZE", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.degamma_lut_size_property = prop;
prop = drm_property_create(dev,
DRM_MODE_PROP_BLOB,
"CTM", 0);
if (!prop)
return -ENOMEM;
dev->mode_config.ctm_property = prop;
prop = drm_property_create(dev,
DRM_MODE_PROP_BLOB,
"GAMMA_LUT", 0);
if (!prop)
return -ENOMEM;
dev->mode_config.gamma_lut_property = prop;
prop = drm_property_create_range(dev,
DRM_MODE_PROP_IMMUTABLE,
"GAMMA_LUT_SIZE", 0, UINT_MAX);
if (!prop)
return -ENOMEM;
dev->mode_config.gamma_lut_size_property = prop;
return 0;
}
/**
* drm_mode_config_init - initialize DRM mode_configuration structure
* @dev: DRM device
*
* Initialize @dev's mode_config structure, used for tracking the graphics
* configuration of @dev.
*
* Since this initializes the modeset locks, no locking is possible. Which is no
* problem, since this should happen single threaded at init time. It is the
* driver's problem to ensure this guarantee.
*
*/
void drm_mode_config_init(struct drm_device *dev)
{
mutex_init(&dev->mode_config.mutex);
drm_modeset_lock_init(&dev->mode_config.connection_mutex);
mutex_init(&dev->mode_config.idr_mutex);
mutex_init(&dev->mode_config.fb_lock);
mutex_init(&dev->mode_config.blob_lock);
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
INIT_LIST_HEAD(&dev->mode_config.property_list);
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
INIT_LIST_HEAD(&dev->mode_config.plane_list);
idr_init(&dev->mode_config.crtc_idr);
idr_init(&dev->mode_config.tile_idr);
ida_init(&dev->mode_config.connector_ida);
drm_modeset_lock_all(dev);
drm_mode_create_standard_properties(dev);
drm_modeset_unlock_all(dev);
/* Just to be sure */
dev->mode_config.num_fb = 0;
dev->mode_config.num_connector = 0;
dev->mode_config.num_crtc = 0;
dev->mode_config.num_encoder = 0;
dev->mode_config.num_overlay_plane = 0;
dev->mode_config.num_total_plane = 0;
}
EXPORT_SYMBOL(drm_mode_config_init);
/**
* drm_mode_config_cleanup - free up DRM mode_config info
* @dev: DRM device
*
* Free up all the connectors and CRTCs associated with this DRM device, then
* free up the framebuffers and associated buffer objects.
*
* Note that since this /should/ happen single-threaded at driver/device
* teardown time, no locking is required. It's the driver's job to ensure that
* this guarantee actually holds true.
*
* FIXME: cleanup any dangling user buffer objects too
*/
void drm_mode_config_cleanup(struct drm_device *dev)
{
struct drm_connector *connector, *ot;
struct drm_crtc *crtc, *ct;
struct drm_encoder *encoder, *enct;
struct drm_framebuffer *fb, *fbt;
struct drm_property *property, *pt;
struct drm_property_blob *blob, *bt;
struct drm_plane *plane, *plt;
list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
head) {
encoder->funcs->destroy(encoder);
}
list_for_each_entry_safe(connector, ot,
&dev->mode_config.connector_list, head) {
connector->funcs->destroy(connector);
}
list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
head) {
drm_property_destroy(dev, property);
}
list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
head) {
plane->funcs->destroy(plane);
}
list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
crtc->funcs->destroy(crtc);
}
list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
head_global) {
drm_property_unreference_blob(blob);
}
/*
* Single-threaded teardown context, so it's not required to grab the
* fb_lock to protect against concurrent fb_list access. Contrary, it
* would actually deadlock with the drm_framebuffer_cleanup function.
*
* Also, if there are any framebuffers left, that's a driver leak now,
* so politely WARN about this.
*/
WARN_ON(!list_empty(&dev->mode_config.fb_list));
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
drm_framebuffer_free(&fb->base.refcount);
}
ida_destroy(&dev->mode_config.connector_ida);
idr_destroy(&dev->mode_config.tile_idr);
idr_destroy(&dev->mode_config.crtc_idr);
drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
}
EXPORT_SYMBOL(drm_mode_config_cleanup);