484 lines
14 KiB
C
484 lines
14 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <drm/drm_encoder.h>
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#include <drm/drm_mode_config.h>
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#include <drm/drmP.h>
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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int drm_modeset_register_all(struct drm_device *dev)
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{
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int ret;
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ret = drm_plane_register_all(dev);
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if (ret)
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goto err_plane;
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ret = drm_crtc_register_all(dev);
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if (ret)
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goto err_crtc;
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ret = drm_encoder_register_all(dev);
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if (ret)
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goto err_encoder;
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ret = drm_connector_register_all(dev);
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if (ret)
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goto err_connector;
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return 0;
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err_connector:
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drm_encoder_unregister_all(dev);
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err_encoder:
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drm_crtc_unregister_all(dev);
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err_crtc:
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drm_plane_unregister_all(dev);
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err_plane:
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return ret;
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}
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void drm_modeset_unregister_all(struct drm_device *dev)
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{
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drm_connector_unregister_all(dev);
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drm_encoder_unregister_all(dev);
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drm_crtc_unregister_all(dev);
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drm_plane_unregister_all(dev);
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}
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/**
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* drm_mode_getresources - get graphics configuration
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* @dev: drm device for the ioctl
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* @data: data pointer for the ioctl
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* @file_priv: drm file for the ioctl call
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*
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* Construct a set of configuration description structures and return
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* them to the user, including CRTC, connector and framebuffer configuration.
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*
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* Called by the user via ioctl.
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*
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* Returns:
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* Zero on success, negative errno on failure.
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*/
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int drm_mode_getresources(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_mode_card_res *card_res = data;
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struct drm_framebuffer *fb;
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struct drm_connector *connector;
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struct drm_crtc *crtc;
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struct drm_encoder *encoder;
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int count, ret = 0;
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uint32_t __user *fb_id;
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uint32_t __user *crtc_id;
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uint32_t __user *connector_id;
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uint32_t __user *encoder_id;
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struct drm_connector_list_iter conn_iter;
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if (!drm_core_check_feature(dev, DRIVER_MODESET))
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return -EINVAL;
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mutex_lock(&file_priv->fbs_lock);
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count = 0;
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fb_id = u64_to_user_ptr(card_res->fb_id_ptr);
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list_for_each_entry(fb, &file_priv->fbs, filp_head) {
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if (count < card_res->count_fbs &&
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put_user(fb->base.id, fb_id + count)) {
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mutex_unlock(&file_priv->fbs_lock);
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return -EFAULT;
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}
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count++;
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}
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card_res->count_fbs = count;
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mutex_unlock(&file_priv->fbs_lock);
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card_res->max_height = dev->mode_config.max_height;
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card_res->min_height = dev->mode_config.min_height;
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card_res->max_width = dev->mode_config.max_width;
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card_res->min_width = dev->mode_config.min_width;
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count = 0;
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crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr);
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drm_for_each_crtc(crtc, dev) {
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if (drm_lease_held(file_priv, crtc->base.id)) {
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if (count < card_res->count_crtcs &&
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put_user(crtc->base.id, crtc_id + count))
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return -EFAULT;
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count++;
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}
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}
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card_res->count_crtcs = count;
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count = 0;
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encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr);
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drm_for_each_encoder(encoder, dev) {
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if (count < card_res->count_encoders &&
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put_user(encoder->base.id, encoder_id + count))
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return -EFAULT;
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count++;
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}
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card_res->count_encoders = count;
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drm_connector_list_iter_begin(dev, &conn_iter);
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count = 0;
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connector_id = u64_to_user_ptr(card_res->connector_id_ptr);
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drm_for_each_connector_iter(connector, &conn_iter) {
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if (drm_lease_held(file_priv, connector->base.id)) {
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if (count < card_res->count_connectors &&
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put_user(connector->base.id, connector_id + count)) {
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drm_connector_list_iter_end(&conn_iter);
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return -EFAULT;
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}
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count++;
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}
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}
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card_res->count_connectors = count;
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drm_connector_list_iter_end(&conn_iter);
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return ret;
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}
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/**
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* drm_mode_config_reset - call ->reset callbacks
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* @dev: drm device
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*
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* This functions calls all the crtc's, encoder's and connector's ->reset
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* callback. Drivers can use this in e.g. their driver load or resume code to
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* reset hardware and software state.
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*/
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void drm_mode_config_reset(struct drm_device *dev)
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{
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struct drm_crtc *crtc;
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struct drm_plane *plane;
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struct drm_encoder *encoder;
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struct drm_connector *connector;
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struct drm_connector_list_iter conn_iter;
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drm_for_each_plane(plane, dev)
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if (plane->funcs->reset)
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plane->funcs->reset(plane);
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drm_for_each_crtc(crtc, dev)
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if (crtc->funcs->reset)
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crtc->funcs->reset(crtc);
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drm_for_each_encoder(encoder, dev)
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if (encoder->funcs->reset)
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encoder->funcs->reset(encoder);
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drm_connector_list_iter_begin(dev, &conn_iter);
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drm_for_each_connector_iter(connector, &conn_iter)
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if (connector->funcs->reset)
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connector->funcs->reset(connector);
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drm_connector_list_iter_end(&conn_iter);
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}
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EXPORT_SYMBOL(drm_mode_config_reset);
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/*
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* Global properties
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*/
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static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
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{ DRM_PLANE_TYPE_OVERLAY, "Overlay" },
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{ DRM_PLANE_TYPE_PRIMARY, "Primary" },
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{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
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};
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static int drm_mode_create_standard_properties(struct drm_device *dev)
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{
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struct drm_property *prop;
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int ret;
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ret = drm_connector_create_standard_properties(dev);
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if (ret)
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return ret;
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prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
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"type", drm_plane_type_enum_list,
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ARRAY_SIZE(drm_plane_type_enum_list));
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if (!prop)
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return -ENOMEM;
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dev->mode_config.plane_type_property = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_X", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_x = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_Y", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_y = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_W", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_w = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_H", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_h = prop;
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prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_X", INT_MIN, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_x = prop;
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prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_Y", INT_MIN, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_y = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_W", 0, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_w = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_H", 0, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_h = prop;
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prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
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"FB_ID", DRM_MODE_OBJECT_FB);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_fb_id = prop;
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prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
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"IN_FENCE_FD", -1, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_in_fence_fd = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"OUT_FENCE_PTR", 0, U64_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_out_fence_ptr = prop;
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prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_ID", DRM_MODE_OBJECT_CRTC);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_id = prop;
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prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
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"ACTIVE");
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_active = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
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"MODE_ID", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_mode_id = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"DEGAMMA_LUT", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.degamma_lut_property = prop;
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prop = drm_property_create_range(dev,
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DRM_MODE_PROP_IMMUTABLE,
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"DEGAMMA_LUT_SIZE", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.degamma_lut_size_property = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"CTM", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.ctm_property = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"GAMMA_LUT", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.gamma_lut_property = prop;
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prop = drm_property_create_range(dev,
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DRM_MODE_PROP_IMMUTABLE,
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"GAMMA_LUT_SIZE", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.gamma_lut_size_property = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB,
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"IN_FORMATS", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.modifiers_property = prop;
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return 0;
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}
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/**
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* drm_mode_config_init - initialize DRM mode_configuration structure
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* @dev: DRM device
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*
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* Initialize @dev's mode_config structure, used for tracking the graphics
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* configuration of @dev.
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*
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* Since this initializes the modeset locks, no locking is possible. Which is no
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* problem, since this should happen single threaded at init time. It is the
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* driver's problem to ensure this guarantee.
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*
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*/
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void drm_mode_config_init(struct drm_device *dev)
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{
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mutex_init(&dev->mode_config.mutex);
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drm_modeset_lock_init(&dev->mode_config.connection_mutex);
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mutex_init(&dev->mode_config.idr_mutex);
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mutex_init(&dev->mode_config.fb_lock);
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mutex_init(&dev->mode_config.blob_lock);
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INIT_LIST_HEAD(&dev->mode_config.fb_list);
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INIT_LIST_HEAD(&dev->mode_config.crtc_list);
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INIT_LIST_HEAD(&dev->mode_config.connector_list);
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INIT_LIST_HEAD(&dev->mode_config.encoder_list);
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INIT_LIST_HEAD(&dev->mode_config.property_list);
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INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
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INIT_LIST_HEAD(&dev->mode_config.plane_list);
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idr_init(&dev->mode_config.crtc_idr);
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idr_init(&dev->mode_config.tile_idr);
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ida_init(&dev->mode_config.connector_ida);
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spin_lock_init(&dev->mode_config.connector_list_lock);
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init_llist_head(&dev->mode_config.connector_free_list);
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INIT_WORK(&dev->mode_config.connector_free_work, drm_connector_free_work_fn);
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drm_mode_create_standard_properties(dev);
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/* Just to be sure */
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dev->mode_config.num_fb = 0;
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dev->mode_config.num_connector = 0;
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dev->mode_config.num_crtc = 0;
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dev->mode_config.num_encoder = 0;
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dev->mode_config.num_total_plane = 0;
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}
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EXPORT_SYMBOL(drm_mode_config_init);
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/**
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* drm_mode_config_cleanup - free up DRM mode_config info
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* @dev: DRM device
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*
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* Free up all the connectors and CRTCs associated with this DRM device, then
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* free up the framebuffers and associated buffer objects.
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*
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* Note that since this /should/ happen single-threaded at driver/device
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* teardown time, no locking is required. It's the driver's job to ensure that
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* this guarantee actually holds true.
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*
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* FIXME: cleanup any dangling user buffer objects too
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*/
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void drm_mode_config_cleanup(struct drm_device *dev)
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{
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struct drm_connector *connector;
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struct drm_connector_list_iter conn_iter;
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struct drm_crtc *crtc, *ct;
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struct drm_encoder *encoder, *enct;
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struct drm_framebuffer *fb, *fbt;
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struct drm_property *property, *pt;
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struct drm_property_blob *blob, *bt;
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struct drm_plane *plane, *plt;
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list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
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head) {
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encoder->funcs->destroy(encoder);
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}
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drm_connector_list_iter_begin(dev, &conn_iter);
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drm_for_each_connector_iter(connector, &conn_iter) {
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/* drm_connector_list_iter holds an full reference to the
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* current connector itself, which means it is inherently safe
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* against unreferencing the current connector - but not against
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* deleting it right away. */
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drm_connector_put(connector);
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}
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drm_connector_list_iter_end(&conn_iter);
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/* connector_iter drops references in a work item. */
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flush_work(&dev->mode_config.connector_free_work);
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if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) {
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drm_connector_list_iter_begin(dev, &conn_iter);
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drm_for_each_connector_iter(connector, &conn_iter)
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DRM_ERROR("connector %s leaked!\n", connector->name);
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drm_connector_list_iter_end(&conn_iter);
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}
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list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
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head) {
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drm_property_destroy(dev, property);
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}
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list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
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head) {
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plane->funcs->destroy(plane);
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}
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list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
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crtc->funcs->destroy(crtc);
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}
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list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
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head_global) {
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drm_property_blob_put(blob);
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}
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/*
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* Single-threaded teardown context, so it's not required to grab the
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* fb_lock to protect against concurrent fb_list access. Contrary, it
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* would actually deadlock with the drm_framebuffer_cleanup function.
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*
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* Also, if there are any framebuffers left, that's a driver leak now,
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* so politely WARN about this.
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*/
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WARN_ON(!list_empty(&dev->mode_config.fb_list));
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list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
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drm_framebuffer_free(&fb->base.refcount);
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}
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ida_destroy(&dev->mode_config.connector_ida);
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idr_destroy(&dev->mode_config.tile_idr);
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idr_destroy(&dev->mode_config.crtc_idr);
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drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
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}
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EXPORT_SYMBOL(drm_mode_config_cleanup);
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