Changeset View
Changeset View
Standalone View
Standalone View
sys/dev/drm/core/drm_mode_config.c
- This file was added.
/* | |||||
* 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/uaccess.h> | |||||
#include <drm/drm_drv.h> | |||||
#include <drm/drm_encoder.h> | |||||
#include <drm/drm_file.h> | |||||
#include <drm/drm_mode_config.h> | |||||
#include <drm/drm_print.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 drm_framebuffer *fb; | |||||
struct drm_connector *connector; | |||||
struct drm_crtc *crtc; | |||||
struct drm_encoder *encoder; | |||||
int count, ret = 0; | |||||
uint32_t __user *fb_id; | |||||
uint32_t __user *crtc_id; | |||||
uint32_t __user *connector_id; | |||||
uint32_t __user *encoder_id; | |||||
struct drm_connector_list_iter conn_iter; | |||||
if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |||||
return -EOPNOTSUPP; | |||||
mutex_lock(&file_priv->fbs_lock); | |||||
count = 0; | |||||
fb_id = u64_to_user_ptr(card_res->fb_id_ptr); | |||||
list_for_each_entry(fb, &file_priv->fbs, filp_head) { | |||||
if (count < card_res->count_fbs && | |||||
put_user(fb->base.id, fb_id + count)) { | |||||
mutex_unlock(&file_priv->fbs_lock); | |||||
return -EFAULT; | |||||
} | |||||
count++; | |||||
} | |||||
card_res->count_fbs = count; | |||||
mutex_unlock(&file_priv->fbs_lock); | |||||
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; | |||||
count = 0; | |||||
crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr); | |||||
drm_for_each_crtc(crtc, dev) { | |||||
if (drm_lease_held(file_priv, crtc->base.id)) { | |||||
if (count < card_res->count_crtcs && | |||||
put_user(crtc->base.id, crtc_id + count)) | |||||
return -EFAULT; | |||||
count++; | |||||
} | |||||
} | |||||
card_res->count_crtcs = count; | |||||
count = 0; | |||||
encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr); | |||||
drm_for_each_encoder(encoder, dev) { | |||||
if (count < card_res->count_encoders && | |||||
put_user(encoder->base.id, encoder_id + count)) | |||||
return -EFAULT; | |||||
count++; | |||||
} | |||||
card_res->count_encoders = count; | |||||
drm_connector_list_iter_begin(dev, &conn_iter); | |||||
count = 0; | |||||
connector_id = u64_to_user_ptr(card_res->connector_id_ptr); | |||||
drm_for_each_connector_iter(connector, &conn_iter) { | |||||
/* only expose writeback connectors if userspace understands them */ | |||||
if (!file_priv->writeback_connectors && | |||||
(connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)) | |||||
continue; | |||||
if (drm_lease_held(file_priv, connector->base.id)) { | |||||
if (count < card_res->count_connectors && | |||||
put_user(connector->base.id, connector_id + count)) { | |||||
drm_connector_list_iter_end(&conn_iter); | |||||
return -EFAULT; | |||||
} | |||||
count++; | |||||
} | |||||
} | |||||
card_res->count_connectors = count; | |||||
drm_connector_list_iter_end(&conn_iter); | |||||
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; | |||||
struct drm_connector_list_iter conn_iter; | |||||
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); | |||||
drm_connector_list_iter_begin(dev, &conn_iter); | |||||
drm_for_each_connector_iter(connector, &conn_iter) | |||||
if (connector->funcs->reset) | |||||
connector->funcs->reset(connector); | |||||
drm_connector_list_iter_end(&conn_iter); | |||||
} | |||||
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(dev, | |||||
DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, | |||||
"FB_DAMAGE_CLIPS", 0); | |||||
if (!prop) | |||||
return -ENOMEM; | |||||
dev->mode_config.prop_fb_damage_clips = 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_bool(dev, 0, | |||||
"VRR_ENABLED"); | |||||
if (!prop) | |||||
return -ENOMEM; | |||||
dev->mode_config.prop_vrr_enabled = 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; | |||||
prop = drm_property_create(dev, | |||||
DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB, | |||||
"IN_FORMATS", 0); | |||||
if (!prop) | |||||
return -ENOMEM; | |||||
dev->mode_config.modifiers_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); | |||||
INIT_LIST_HEAD(&dev->mode_config.privobj_list); | |||||
idr_init(&dev->mode_config.object_idr); | |||||
idr_init(&dev->mode_config.tile_idr); | |||||
ida_init(&dev->mode_config.connector_ida); | |||||
spin_lock_init(&dev->mode_config.connector_list_lock); | |||||
init_llist_head(&dev->mode_config.connector_free_list); | |||||
INIT_WORK(&dev->mode_config.connector_free_work, drm_connector_free_work_fn); | |||||
drm_mode_create_standard_properties(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_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; | |||||
struct drm_connector_list_iter conn_iter; | |||||
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); | |||||
} | |||||
drm_connector_list_iter_begin(dev, &conn_iter); | |||||
drm_for_each_connector_iter(connector, &conn_iter) { | |||||
/* drm_connector_list_iter holds an full reference to the | |||||
* current connector itself, which means it is inherently safe | |||||
* against unreferencing the current connector - but not against | |||||
* deleting it right away. */ | |||||
drm_connector_put(connector); | |||||
} | |||||
drm_connector_list_iter_end(&conn_iter); | |||||
/* connector_iter drops references in a work item. */ | |||||
flush_work(&dev->mode_config.connector_free_work); | |||||
if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) { | |||||
drm_connector_list_iter_begin(dev, &conn_iter); | |||||
drm_for_each_connector_iter(connector, &conn_iter) | |||||
DRM_ERROR("connector %s leaked!\n", connector->name); | |||||
drm_connector_list_iter_end(&conn_iter); | |||||
} | |||||
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_blob_put(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) { | |||||
struct drm_printer p = drm_debug_printer("[leaked fb]"); | |||||
drm_printf(&p, "framebuffer[%u]:\n", fb->base.id); | |||||
drm_framebuffer_print_info(&p, 1, fb); | |||||
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.object_idr); | |||||
drm_modeset_lock_fini(&dev->mode_config.connection_mutex); | |||||
} | |||||
EXPORT_SYMBOL(drm_mode_config_cleanup); |