2014-07-26 03:30:38 +08:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2014 Red Hat
|
|
|
|
* Copyright (C) 2014 Intel Corp.
|
|
|
|
*
|
|
|
|
* 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 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 HOLDER(S) OR AUTHOR(S) 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:
|
|
|
|
* Rob Clark <robdclark@gmail.com>
|
|
|
|
* Daniel Vetter <daniel.vetter@ffwll.ch>
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include <drm/drm_atomic.h>
|
|
|
|
#include <drm/drm_plane_helper.h>
|
|
|
|
|
|
|
|
static void kfree_state(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
kfree(state->connectors);
|
|
|
|
kfree(state->connector_states);
|
|
|
|
kfree(state->crtcs);
|
|
|
|
kfree(state->crtc_states);
|
|
|
|
kfree(state->planes);
|
|
|
|
kfree(state->plane_states);
|
|
|
|
kfree(state);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_state_alloc - allocate atomic state
|
|
|
|
* @dev: DRM device
|
|
|
|
*
|
|
|
|
* This allocates an empty atomic state to track updates.
|
|
|
|
*/
|
|
|
|
struct drm_atomic_state *
|
|
|
|
drm_atomic_state_alloc(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_atomic_state *state;
|
|
|
|
|
|
|
|
state = kzalloc(sizeof(*state), GFP_KERNEL);
|
|
|
|
if (!state)
|
|
|
|
return NULL;
|
|
|
|
|
2014-12-19 05:01:56 +08:00
|
|
|
/* TODO legacy paths should maybe do a better job about
|
|
|
|
* setting this appropriately?
|
|
|
|
*/
|
|
|
|
state->allow_modeset = true;
|
|
|
|
|
2014-11-20 01:38:08 +08:00
|
|
|
state->num_connector = ACCESS_ONCE(dev->mode_config.num_connector);
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
state->crtcs = kcalloc(dev->mode_config.num_crtc,
|
|
|
|
sizeof(*state->crtcs), GFP_KERNEL);
|
|
|
|
if (!state->crtcs)
|
|
|
|
goto fail;
|
|
|
|
state->crtc_states = kcalloc(dev->mode_config.num_crtc,
|
|
|
|
sizeof(*state->crtc_states), GFP_KERNEL);
|
|
|
|
if (!state->crtc_states)
|
|
|
|
goto fail;
|
|
|
|
state->planes = kcalloc(dev->mode_config.num_total_plane,
|
|
|
|
sizeof(*state->planes), GFP_KERNEL);
|
|
|
|
if (!state->planes)
|
|
|
|
goto fail;
|
|
|
|
state->plane_states = kcalloc(dev->mode_config.num_total_plane,
|
|
|
|
sizeof(*state->plane_states), GFP_KERNEL);
|
|
|
|
if (!state->plane_states)
|
|
|
|
goto fail;
|
2014-11-20 01:38:08 +08:00
|
|
|
state->connectors = kcalloc(state->num_connector,
|
2014-07-26 03:30:38 +08:00
|
|
|
sizeof(*state->connectors),
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (!state->connectors)
|
|
|
|
goto fail;
|
2014-11-20 01:38:08 +08:00
|
|
|
state->connector_states = kcalloc(state->num_connector,
|
2014-07-26 03:30:38 +08:00
|
|
|
sizeof(*state->connector_states),
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (!state->connector_states)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
state->dev = dev;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Allocate atomic state %p\n", state);
|
|
|
|
|
|
|
|
return state;
|
|
|
|
fail:
|
|
|
|
kfree_state(state);
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_state_alloc);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_state_clear - clear state object
|
|
|
|
* @state: atomic state
|
|
|
|
*
|
|
|
|
* When the w/w mutex algorithm detects a deadlock we need to back off and drop
|
|
|
|
* all locks. So someone else could sneak in and change the current modeset
|
|
|
|
* configuration. Which means that all the state assembled in @state is no
|
|
|
|
* longer an atomic update to the current state, but to some arbitrary earlier
|
|
|
|
* state. Which could break assumptions the driver's ->atomic_check likely
|
|
|
|
* relies on.
|
|
|
|
*
|
|
|
|
* Hence we must clear all cached state and completely start over, using this
|
|
|
|
* function.
|
|
|
|
*/
|
|
|
|
void drm_atomic_state_clear(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = state->dev;
|
2014-11-20 01:38:07 +08:00
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
2014-07-26 03:30:38 +08:00
|
|
|
int i;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Clearing atomic state %p\n", state);
|
|
|
|
|
2014-11-20 01:38:08 +08:00
|
|
|
for (i = 0; i < state->num_connector; i++) {
|
2014-07-26 03:30:38 +08:00
|
|
|
struct drm_connector *connector = state->connectors[i];
|
|
|
|
|
|
|
|
if (!connector)
|
|
|
|
continue;
|
|
|
|
|
2014-11-20 01:38:07 +08:00
|
|
|
WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
connector->funcs->atomic_destroy_state(connector,
|
|
|
|
state->connector_states[i]);
|
|
|
|
}
|
|
|
|
|
2014-11-20 01:38:07 +08:00
|
|
|
for (i = 0; i < config->num_crtc; i++) {
|
2014-07-26 03:30:38 +08:00
|
|
|
struct drm_crtc *crtc = state->crtcs[i];
|
|
|
|
|
|
|
|
if (!crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
crtc->funcs->atomic_destroy_state(crtc,
|
|
|
|
state->crtc_states[i]);
|
|
|
|
}
|
|
|
|
|
2014-11-20 01:38:07 +08:00
|
|
|
for (i = 0; i < config->num_total_plane; i++) {
|
2014-07-26 03:30:38 +08:00
|
|
|
struct drm_plane *plane = state->planes[i];
|
|
|
|
|
|
|
|
if (!plane)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
plane->funcs->atomic_destroy_state(plane,
|
|
|
|
state->plane_states[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_state_clear);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_state_free - free all memory for an atomic state
|
|
|
|
* @state: atomic state to deallocate
|
|
|
|
*
|
|
|
|
* This frees all memory associated with an atomic state, including all the
|
|
|
|
* per-object state for planes, crtcs and connectors.
|
|
|
|
*/
|
|
|
|
void drm_atomic_state_free(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
drm_atomic_state_clear(state);
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Freeing atomic state %p\n", state);
|
|
|
|
|
|
|
|
kfree_state(state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_state_free);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_get_crtc_state - get crtc state
|
|
|
|
* @state: global atomic state object
|
|
|
|
* @crtc: crtc to get state object for
|
|
|
|
*
|
|
|
|
* This function returns the crtc state for the given crtc, allocating it if
|
|
|
|
* needed. It will also grab the relevant crtc lock to make sure that the state
|
|
|
|
* is consistent.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
*
|
|
|
|
* Either the allocated state or the error code encoded into the pointer. When
|
|
|
|
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
|
|
|
|
* entire atomic sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
struct drm_crtc_state *
|
|
|
|
drm_atomic_get_crtc_state(struct drm_atomic_state *state,
|
|
|
|
struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
int ret, index;
|
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
|
|
index = drm_crtc_index(crtc);
|
|
|
|
|
|
|
|
if (state->crtc_states[index])
|
|
|
|
return state->crtc_states[index];
|
|
|
|
|
|
|
|
ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
|
|
|
|
if (ret)
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
|
|
|
|
crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
|
|
|
|
if (!crtc_state)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
state->crtc_states[index] = crtc_state;
|
|
|
|
state->crtcs[index] = crtc;
|
|
|
|
crtc_state->state = state;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Added [CRTC:%d] %p state to %p\n",
|
|
|
|
crtc->base.id, crtc_state, state);
|
|
|
|
|
|
|
|
return crtc_state;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_get_crtc_state);
|
|
|
|
|
2014-12-19 05:01:46 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_crtc_set_property - set property on CRTC
|
|
|
|
* @crtc: the drm CRTC to set a property on
|
|
|
|
* @state: the state object to update with the new property value
|
|
|
|
* @property: the property to set
|
|
|
|
* @val: the new property value
|
|
|
|
*
|
|
|
|
* Use this instead of calling crtc->atomic_set_property directly.
|
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_set_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero on success, error code on failure
|
|
|
|
*/
|
|
|
|
int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
|
|
|
|
struct drm_crtc_state *state, struct drm_property *property,
|
|
|
|
uint64_t val)
|
|
|
|
{
|
|
|
|
if (crtc->funcs->atomic_set_property)
|
|
|
|
return crtc->funcs->atomic_set_property(crtc, state, property, val);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_crtc_set_property);
|
|
|
|
|
2014-12-19 05:49:02 +08:00
|
|
|
/*
|
2014-12-19 05:01:47 +08:00
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_get_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*/
|
|
|
|
int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
|
|
|
|
const struct drm_crtc_state *state,
|
|
|
|
struct drm_property *property, uint64_t *val)
|
|
|
|
{
|
|
|
|
if (crtc->funcs->atomic_get_property)
|
|
|
|
return crtc->funcs->atomic_get_property(crtc, state, property, val);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2014-12-19 05:01:51 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_crtc_check - check crtc state
|
|
|
|
* @crtc: crtc to check
|
|
|
|
* @state: crtc state to check
|
|
|
|
*
|
|
|
|
* Provides core sanity checks for crtc state.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero on success, error code on failure
|
|
|
|
*/
|
|
|
|
static int drm_atomic_crtc_check(struct drm_crtc *crtc,
|
|
|
|
struct drm_crtc_state *state)
|
|
|
|
{
|
|
|
|
/* NOTE: we explicitly don't enforce constraints such as primary
|
|
|
|
* layer covering entire screen, since that is something we want
|
|
|
|
* to allow (on hw that supports it). For hw that does not, it
|
|
|
|
* should be checked in driver's crtc->atomic_check() vfunc.
|
|
|
|
*
|
|
|
|
* TODO: Add generic modeset state checks once we support those.
|
|
|
|
*/
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_get_plane_state - get plane state
|
|
|
|
* @state: global atomic state object
|
|
|
|
* @plane: plane to get state object for
|
|
|
|
*
|
|
|
|
* This function returns the plane state for the given plane, allocating it if
|
|
|
|
* needed. It will also grab the relevant plane lock to make sure that the state
|
|
|
|
* is consistent.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
*
|
|
|
|
* Either the allocated state or the error code encoded into the pointer. When
|
|
|
|
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
|
|
|
|
* entire atomic sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
struct drm_plane_state *
|
|
|
|
drm_atomic_get_plane_state(struct drm_atomic_state *state,
|
|
|
|
struct drm_plane *plane)
|
|
|
|
{
|
|
|
|
int ret, index;
|
|
|
|
struct drm_plane_state *plane_state;
|
|
|
|
|
|
|
|
index = drm_plane_index(plane);
|
|
|
|
|
|
|
|
if (state->plane_states[index])
|
|
|
|
return state->plane_states[index];
|
|
|
|
|
2014-11-11 17:12:00 +08:00
|
|
|
ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
|
2014-07-26 03:30:38 +08:00
|
|
|
if (ret)
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
|
|
|
|
plane_state = plane->funcs->atomic_duplicate_state(plane);
|
|
|
|
if (!plane_state)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
state->plane_states[index] = plane_state;
|
|
|
|
state->planes[index] = plane;
|
|
|
|
plane_state->state = state;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Added [PLANE:%d] %p state to %p\n",
|
|
|
|
plane->base.id, plane_state, state);
|
|
|
|
|
|
|
|
if (plane_state->crtc) {
|
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state,
|
|
|
|
plane_state->crtc);
|
|
|
|
if (IS_ERR(crtc_state))
|
|
|
|
return ERR_CAST(crtc_state);
|
|
|
|
}
|
|
|
|
|
|
|
|
return plane_state;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_get_plane_state);
|
|
|
|
|
2014-12-19 05:01:46 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_plane_set_property - set property on plane
|
|
|
|
* @plane: the drm plane to set a property on
|
|
|
|
* @state: the state object to update with the new property value
|
|
|
|
* @property: the property to set
|
|
|
|
* @val: the new property value
|
|
|
|
*
|
|
|
|
* Use this instead of calling plane->atomic_set_property directly.
|
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_set_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero on success, error code on failure
|
|
|
|
*/
|
|
|
|
int drm_atomic_plane_set_property(struct drm_plane *plane,
|
|
|
|
struct drm_plane_state *state, struct drm_property *property,
|
|
|
|
uint64_t val)
|
|
|
|
{
|
2014-12-19 05:01:53 +08:00
|
|
|
struct drm_device *dev = plane->dev;
|
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
|
|
|
|
if (property == config->prop_fb_id) {
|
|
|
|
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val);
|
|
|
|
drm_atomic_set_fb_for_plane(state, fb);
|
|
|
|
if (fb)
|
|
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
} else if (property == config->prop_crtc_id) {
|
|
|
|
struct drm_crtc *crtc = drm_crtc_find(dev, val);
|
|
|
|
return drm_atomic_set_crtc_for_plane(state, crtc);
|
|
|
|
} else if (property == config->prop_crtc_x) {
|
|
|
|
state->crtc_x = U642I64(val);
|
|
|
|
} else if (property == config->prop_crtc_y) {
|
|
|
|
state->crtc_y = U642I64(val);
|
|
|
|
} else if (property == config->prop_crtc_w) {
|
|
|
|
state->crtc_w = val;
|
|
|
|
} else if (property == config->prop_crtc_h) {
|
|
|
|
state->crtc_h = val;
|
|
|
|
} else if (property == config->prop_src_x) {
|
|
|
|
state->src_x = val;
|
|
|
|
} else if (property == config->prop_src_y) {
|
|
|
|
state->src_y = val;
|
|
|
|
} else if (property == config->prop_src_w) {
|
|
|
|
state->src_w = val;
|
|
|
|
} else if (property == config->prop_src_h) {
|
|
|
|
state->src_h = val;
|
|
|
|
} else if (plane->funcs->atomic_set_property) {
|
|
|
|
return plane->funcs->atomic_set_property(plane, state,
|
|
|
|
property, val);
|
|
|
|
} else {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2014-12-19 05:01:46 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_plane_set_property);
|
|
|
|
|
2014-12-19 05:49:02 +08:00
|
|
|
/*
|
2014-12-19 05:01:47 +08:00
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_get_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*/
|
2014-12-19 05:49:02 +08:00
|
|
|
static int
|
|
|
|
drm_atomic_plane_get_property(struct drm_plane *plane,
|
2014-12-19 05:01:47 +08:00
|
|
|
const struct drm_plane_state *state,
|
|
|
|
struct drm_property *property, uint64_t *val)
|
|
|
|
{
|
2014-12-19 05:01:53 +08:00
|
|
|
struct drm_device *dev = plane->dev;
|
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
|
|
|
|
if (property == config->prop_fb_id) {
|
|
|
|
*val = (state->fb) ? state->fb->base.id : 0;
|
|
|
|
} else if (property == config->prop_crtc_id) {
|
|
|
|
*val = (state->crtc) ? state->crtc->base.id : 0;
|
|
|
|
} else if (property == config->prop_crtc_x) {
|
|
|
|
*val = I642U64(state->crtc_x);
|
|
|
|
} else if (property == config->prop_crtc_y) {
|
|
|
|
*val = I642U64(state->crtc_y);
|
|
|
|
} else if (property == config->prop_crtc_w) {
|
|
|
|
*val = state->crtc_w;
|
|
|
|
} else if (property == config->prop_crtc_h) {
|
|
|
|
*val = state->crtc_h;
|
|
|
|
} else if (property == config->prop_src_x) {
|
|
|
|
*val = state->src_x;
|
|
|
|
} else if (property == config->prop_src_y) {
|
|
|
|
*val = state->src_y;
|
|
|
|
} else if (property == config->prop_src_w) {
|
|
|
|
*val = state->src_w;
|
|
|
|
} else if (property == config->prop_src_h) {
|
|
|
|
*val = state->src_h;
|
|
|
|
} else if (plane->funcs->atomic_get_property) {
|
2014-12-19 05:01:47 +08:00
|
|
|
return plane->funcs->atomic_get_property(plane, state, property, val);
|
2014-12-19 05:01:53 +08:00
|
|
|
} else {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2014-12-19 05:01:47 +08:00
|
|
|
}
|
|
|
|
|
2014-12-19 05:01:51 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_plane_check - check plane state
|
|
|
|
* @plane: plane to check
|
|
|
|
* @state: plane state to check
|
|
|
|
*
|
|
|
|
* Provides core sanity checks for plane state.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero on success, error code on failure
|
|
|
|
*/
|
|
|
|
static int drm_atomic_plane_check(struct drm_plane *plane,
|
|
|
|
struct drm_plane_state *state)
|
|
|
|
{
|
|
|
|
unsigned int fb_width, fb_height;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
/* either *both* CRTC and FB must be set, or neither */
|
|
|
|
if (WARN_ON(state->crtc && !state->fb)) {
|
|
|
|
DRM_DEBUG_KMS("CRTC set but no FB\n");
|
|
|
|
return -EINVAL;
|
|
|
|
} else if (WARN_ON(state->fb && !state->crtc)) {
|
|
|
|
DRM_DEBUG_KMS("FB set but no CRTC\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if disabled, we don't care about the rest of the state: */
|
|
|
|
if (!state->crtc)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* Check whether this plane is usable on this CRTC */
|
|
|
|
if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
|
|
|
|
DRM_DEBUG_KMS("Invalid crtc for plane\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check whether this plane supports the fb pixel format. */
|
|
|
|
for (i = 0; i < plane->format_count; i++)
|
|
|
|
if (state->fb->pixel_format == plane->format_types[i])
|
|
|
|
break;
|
|
|
|
if (i == plane->format_count) {
|
|
|
|
DRM_DEBUG_KMS("Invalid pixel format %s\n",
|
|
|
|
drm_get_format_name(state->fb->pixel_format));
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Give drivers some help against integer overflows */
|
|
|
|
if (state->crtc_w > INT_MAX ||
|
|
|
|
state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
|
|
|
|
state->crtc_h > INT_MAX ||
|
|
|
|
state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
|
|
|
|
DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
|
|
|
|
state->crtc_w, state->crtc_h,
|
|
|
|
state->crtc_x, state->crtc_y);
|
|
|
|
return -ERANGE;
|
|
|
|
}
|
|
|
|
|
|
|
|
fb_width = state->fb->width << 16;
|
|
|
|
fb_height = state->fb->height << 16;
|
|
|
|
|
|
|
|
/* Make sure source coordinates are inside the fb. */
|
|
|
|
if (state->src_w > fb_width ||
|
|
|
|
state->src_x > fb_width - state->src_w ||
|
|
|
|
state->src_h > fb_height ||
|
|
|
|
state->src_y > fb_height - state->src_h) {
|
|
|
|
DRM_DEBUG_KMS("Invalid source coordinates "
|
|
|
|
"%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
|
|
|
|
state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
|
|
|
|
state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
|
|
|
|
state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
|
|
|
|
state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10);
|
|
|
|
return -ENOSPC;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_get_connector_state - get connector state
|
|
|
|
* @state: global atomic state object
|
|
|
|
* @connector: connector to get state object for
|
|
|
|
*
|
|
|
|
* This function returns the connector state for the given connector,
|
|
|
|
* allocating it if needed. It will also grab the relevant connector lock to
|
|
|
|
* make sure that the state is consistent.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
*
|
|
|
|
* Either the allocated state or the error code encoded into the pointer. When
|
|
|
|
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
|
|
|
|
* entire atomic sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
struct drm_connector_state *
|
|
|
|
drm_atomic_get_connector_state(struct drm_atomic_state *state,
|
|
|
|
struct drm_connector *connector)
|
|
|
|
{
|
|
|
|
int ret, index;
|
|
|
|
struct drm_mode_config *config = &connector->dev->mode_config;
|
|
|
|
struct drm_connector_state *connector_state;
|
|
|
|
|
2014-11-20 01:38:06 +08:00
|
|
|
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
|
|
|
|
if (ret)
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
index = drm_connector_index(connector);
|
|
|
|
|
2014-11-20 01:38:08 +08:00
|
|
|
/*
|
|
|
|
* Construction of atomic state updates can race with a connector
|
|
|
|
* hot-add which might overflow. In this case flip the table and just
|
|
|
|
* restart the entire ioctl - no one is fast enough to livelock a cpu
|
|
|
|
* with physical hotplug events anyway.
|
|
|
|
*
|
|
|
|
* Note that we only grab the indexes once we have the right lock to
|
|
|
|
* prevent hotplug/unplugging of connectors. So removal is no problem,
|
|
|
|
* at most the array is a bit too large.
|
|
|
|
*/
|
|
|
|
if (index >= state->num_connector) {
|
|
|
|
DRM_DEBUG_KMS("Hot-added connector would overflow state array, restarting\n");
|
2014-11-20 16:53:35 +08:00
|
|
|
return ERR_PTR(-EAGAIN);
|
2014-11-20 01:38:08 +08:00
|
|
|
}
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
if (state->connector_states[index])
|
|
|
|
return state->connector_states[index];
|
|
|
|
|
|
|
|
connector_state = connector->funcs->atomic_duplicate_state(connector);
|
|
|
|
if (!connector_state)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
state->connector_states[index] = connector_state;
|
|
|
|
state->connectors[index] = connector;
|
|
|
|
connector_state->state = state;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Added [CONNECTOR:%d] %p state to %p\n",
|
|
|
|
connector->base.id, connector_state, state);
|
|
|
|
|
|
|
|
if (connector_state->crtc) {
|
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state,
|
|
|
|
connector_state->crtc);
|
|
|
|
if (IS_ERR(crtc_state))
|
|
|
|
return ERR_CAST(crtc_state);
|
|
|
|
}
|
|
|
|
|
|
|
|
return connector_state;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_get_connector_state);
|
|
|
|
|
2014-12-19 05:01:46 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_connector_set_property - set property on connector.
|
|
|
|
* @connector: the drm connector to set a property on
|
|
|
|
* @state: the state object to update with the new property value
|
|
|
|
* @property: the property to set
|
|
|
|
* @val: the new property value
|
|
|
|
*
|
|
|
|
* Use this instead of calling connector->atomic_set_property directly.
|
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_set_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero on success, error code on failure
|
|
|
|
*/
|
|
|
|
int drm_atomic_connector_set_property(struct drm_connector *connector,
|
|
|
|
struct drm_connector_state *state, struct drm_property *property,
|
|
|
|
uint64_t val)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
|
2014-12-19 05:01:54 +08:00
|
|
|
if (property == config->prop_crtc_id) {
|
|
|
|
struct drm_crtc *crtc = drm_crtc_find(dev, val);
|
|
|
|
return drm_atomic_set_crtc_for_connector(state, crtc);
|
|
|
|
} else if (property == config->dpms_property) {
|
2014-12-19 05:01:46 +08:00
|
|
|
/* setting DPMS property requires special handling, which
|
|
|
|
* is done in legacy setprop path for us. Disallow (for
|
|
|
|
* now?) atomic writes to DPMS property:
|
|
|
|
*/
|
|
|
|
return -EINVAL;
|
|
|
|
} else if (connector->funcs->atomic_set_property) {
|
|
|
|
return connector->funcs->atomic_set_property(connector,
|
|
|
|
state, property, val);
|
|
|
|
} else {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_connector_set_property);
|
|
|
|
|
2014-12-19 05:49:02 +08:00
|
|
|
/*
|
2014-12-19 05:01:47 +08:00
|
|
|
* This function handles generic/core properties and calls out to
|
|
|
|
* driver's ->atomic_get_property() for driver properties. To ensure
|
|
|
|
* consistent behavior you must call this function rather than the
|
|
|
|
* driver hook directly.
|
|
|
|
*/
|
2014-12-19 05:49:02 +08:00
|
|
|
static int
|
|
|
|
drm_atomic_connector_get_property(struct drm_connector *connector,
|
2014-12-19 05:01:47 +08:00
|
|
|
const struct drm_connector_state *state,
|
|
|
|
struct drm_property *property, uint64_t *val)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
|
2014-12-19 05:01:54 +08:00
|
|
|
if (property == config->prop_crtc_id) {
|
|
|
|
*val = (state->crtc) ? state->crtc->base.id : 0;
|
|
|
|
} else if (property == config->dpms_property) {
|
2014-12-19 05:01:47 +08:00
|
|
|
*val = connector->dpms;
|
|
|
|
} else if (connector->funcs->atomic_get_property) {
|
|
|
|
return connector->funcs->atomic_get_property(connector,
|
|
|
|
state, property, val);
|
|
|
|
} else {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-12-19 05:01:50 +08:00
|
|
|
int drm_atomic_get_property(struct drm_mode_object *obj,
|
|
|
|
struct drm_property *property, uint64_t *val)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = property->dev;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
switch (obj->type) {
|
|
|
|
case DRM_MODE_OBJECT_CONNECTOR: {
|
|
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
|
|
WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
|
|
|
|
ret = drm_atomic_connector_get_property(connector,
|
|
|
|
connector->state, property, val);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRM_MODE_OBJECT_CRTC: {
|
|
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
|
|
WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
|
|
|
|
ret = drm_atomic_crtc_get_property(crtc,
|
|
|
|
crtc->state, property, val);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRM_MODE_OBJECT_PLANE: {
|
|
|
|
struct drm_plane *plane = obj_to_plane(obj);
|
|
|
|
WARN_ON(!drm_modeset_is_locked(&plane->mutex));
|
|
|
|
ret = drm_atomic_plane_get_property(plane,
|
|
|
|
plane->state, property, val);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_set_crtc_for_plane - set crtc for plane
|
2014-11-27 22:49:39 +08:00
|
|
|
* @plane_state: the plane whose incoming state to update
|
2014-07-26 03:30:38 +08:00
|
|
|
* @crtc: crtc to use for the plane
|
|
|
|
*
|
|
|
|
* Changing the assigned crtc for a plane requires us to grab the lock and state
|
|
|
|
* for the new crtc, as needed. This function takes care of all these details
|
|
|
|
* besides updating the pointer in the state object itself.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
|
|
|
|
* then the w/w mutex code has detected a deadlock and the entire atomic
|
|
|
|
* sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
int
|
2014-11-27 22:49:39 +08:00
|
|
|
drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
|
|
|
|
struct drm_crtc *crtc)
|
2014-07-26 03:30:38 +08:00
|
|
|
{
|
2014-11-27 22:49:39 +08:00
|
|
|
struct drm_plane *plane = plane_state->plane;
|
2014-07-26 03:30:38 +08:00
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
2014-11-22 04:28:31 +08:00
|
|
|
if (plane_state->crtc) {
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(plane_state->state,
|
|
|
|
plane_state->crtc);
|
|
|
|
if (WARN_ON(IS_ERR(crtc_state)))
|
|
|
|
return PTR_ERR(crtc_state);
|
|
|
|
|
|
|
|
crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
|
|
|
|
}
|
|
|
|
|
|
|
|
plane_state->crtc = crtc;
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
if (crtc) {
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(plane_state->state,
|
|
|
|
crtc);
|
|
|
|
if (IS_ERR(crtc_state))
|
|
|
|
return PTR_ERR(crtc_state);
|
2014-11-22 04:28:31 +08:00
|
|
|
crtc_state->plane_mask |= (1 << drm_plane_index(plane));
|
2014-07-26 03:30:38 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (crtc)
|
|
|
|
DRM_DEBUG_KMS("Link plane state %p to [CRTC:%d]\n",
|
|
|
|
plane_state, crtc->base.id);
|
|
|
|
else
|
|
|
|
DRM_DEBUG_KMS("Link plane state %p to [NOCRTC]\n", plane_state);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
|
|
|
|
|
2014-11-05 05:57:27 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_set_fb_for_plane - set crtc for plane
|
|
|
|
* @plane_state: atomic state object for the plane
|
|
|
|
* @fb: fb to use for the plane
|
|
|
|
*
|
|
|
|
* Changing the assigned framebuffer for a plane requires us to grab a reference
|
|
|
|
* to the new fb and drop the reference to the old fb, if there is one. This
|
|
|
|
* function takes care of all these details besides updating the pointer in the
|
|
|
|
* state object itself.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
|
|
|
|
struct drm_framebuffer *fb)
|
|
|
|
{
|
|
|
|
if (plane_state->fb)
|
|
|
|
drm_framebuffer_unreference(plane_state->fb);
|
|
|
|
if (fb)
|
|
|
|
drm_framebuffer_reference(fb);
|
|
|
|
plane_state->fb = fb;
|
|
|
|
|
|
|
|
if (fb)
|
|
|
|
DRM_DEBUG_KMS("Set [FB:%d] for plane state %p\n",
|
|
|
|
fb->base.id, plane_state);
|
|
|
|
else
|
|
|
|
DRM_DEBUG_KMS("Set [NOFB] for plane state %p\n", plane_state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
/**
|
|
|
|
* drm_atomic_set_crtc_for_connector - set crtc for connector
|
|
|
|
* @conn_state: atomic state object for the connector
|
|
|
|
* @crtc: crtc to use for the connector
|
|
|
|
*
|
|
|
|
* Changing the assigned crtc for a connector requires us to grab the lock and
|
|
|
|
* state for the new crtc, as needed. This function takes care of all these
|
|
|
|
* details besides updating the pointer in the state object itself.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
|
|
|
|
* then the w/w mutex code has detected a deadlock and the entire atomic
|
|
|
|
* sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
|
|
|
|
struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
|
|
if (crtc) {
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
|
|
|
|
if (IS_ERR(crtc_state))
|
|
|
|
return PTR_ERR(crtc_state);
|
|
|
|
}
|
|
|
|
|
|
|
|
conn_state->crtc = crtc;
|
|
|
|
|
|
|
|
if (crtc)
|
|
|
|
DRM_DEBUG_KMS("Link connector state %p to [CRTC:%d]\n",
|
|
|
|
conn_state, crtc->base.id);
|
|
|
|
else
|
|
|
|
DRM_DEBUG_KMS("Link connector state %p to [NOCRTC]\n",
|
|
|
|
conn_state);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_add_affected_connectors - add connectors for crtc
|
|
|
|
* @state: atomic state
|
|
|
|
* @crtc: DRM crtc
|
|
|
|
*
|
|
|
|
* This function walks the current configuration and adds all connectors
|
|
|
|
* currently using @crtc to the atomic configuration @state. Note that this
|
|
|
|
* function must acquire the connection mutex. This can potentially cause
|
|
|
|
* unneeded seralization if the update is just for the planes on one crtc. Hence
|
|
|
|
* drivers and helpers should only call this when really needed (e.g. when a
|
|
|
|
* full modeset needs to happen due to some change).
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
|
|
|
|
* then the w/w mutex code has detected a deadlock and the entire atomic
|
|
|
|
* sequence must be restarted. All other errors are fatal.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
|
|
|
|
struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_connector_state *conn_state;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("Adding all current connectors for [CRTC:%d] to %p\n",
|
|
|
|
crtc->base.id, state);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Changed connectors are already in @state, so only need to look at the
|
|
|
|
* current configuration.
|
|
|
|
*/
|
|
|
|
list_for_each_entry(connector, &config->connector_list, head) {
|
|
|
|
if (connector->state->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
conn_state = drm_atomic_get_connector_state(state, connector);
|
|
|
|
if (IS_ERR(conn_state))
|
|
|
|
return PTR_ERR(conn_state);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_connectors_for_crtc - count number of connected outputs
|
|
|
|
* @state: atomic state
|
|
|
|
* @crtc: DRM crtc
|
|
|
|
*
|
|
|
|
* This function counts all connectors which will be connected to @crtc
|
|
|
|
* according to @state. Useful to recompute the enable state for @crtc.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
drm_atomic_connectors_for_crtc(struct drm_atomic_state *state,
|
|
|
|
struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
int i, num_connected_connectors = 0;
|
|
|
|
|
2014-11-20 01:38:08 +08:00
|
|
|
for (i = 0; i < state->num_connector; i++) {
|
2014-07-26 03:30:38 +08:00
|
|
|
struct drm_connector_state *conn_state;
|
|
|
|
|
|
|
|
conn_state = state->connector_states[i];
|
|
|
|
|
|
|
|
if (conn_state && conn_state->crtc == crtc)
|
|
|
|
num_connected_connectors++;
|
|
|
|
}
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("State %p has %i connectors for [CRTC:%d]\n",
|
|
|
|
state, num_connected_connectors, crtc->base.id);
|
|
|
|
|
|
|
|
return num_connected_connectors;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_connectors_for_crtc);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_legacy_backoff - locking backoff for legacy ioctls
|
|
|
|
* @state: atomic state
|
|
|
|
*
|
|
|
|
* This function should be used by legacy entry points which don't understand
|
|
|
|
* -EDEADLK semantics. For simplicity this one will grab all modeset locks after
|
|
|
|
* the slowpath completed.
|
|
|
|
*/
|
|
|
|
void drm_atomic_legacy_backoff(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
retry:
|
|
|
|
drm_modeset_backoff(state->acquire_ctx);
|
|
|
|
|
|
|
|
ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
|
|
|
|
state->acquire_ctx);
|
|
|
|
if (ret)
|
|
|
|
goto retry;
|
|
|
|
ret = drm_modeset_lock_all_crtcs(state->dev,
|
|
|
|
state->acquire_ctx);
|
|
|
|
if (ret)
|
|
|
|
goto retry;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_legacy_backoff);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_check_only - check whether a given config would work
|
|
|
|
* @state: atomic configuration to check
|
|
|
|
*
|
|
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
|
|
* backoff dance and restart. All other errors are fatal.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, negative error code on failure.
|
|
|
|
*/
|
|
|
|
int drm_atomic_check_only(struct drm_atomic_state *state)
|
|
|
|
{
|
2014-12-19 05:01:51 +08:00
|
|
|
struct drm_device *dev = state->dev;
|
|
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
int nplanes = config->num_total_plane;
|
|
|
|
int ncrtcs = config->num_crtc;
|
|
|
|
int i, ret = 0;
|
2014-07-26 03:30:38 +08:00
|
|
|
|
|
|
|
DRM_DEBUG_KMS("checking %p\n", state);
|
|
|
|
|
2014-12-19 05:01:51 +08:00
|
|
|
for (i = 0; i < nplanes; i++) {
|
|
|
|
struct drm_plane *plane = state->planes[i];
|
|
|
|
|
|
|
|
if (!plane)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ret = drm_atomic_plane_check(plane, state->plane_states[i]);
|
|
|
|
if (ret) {
|
|
|
|
DRM_DEBUG_KMS("[PLANE:%d] atomic core check failed\n",
|
|
|
|
plane->base.id);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ncrtcs; i++) {
|
|
|
|
struct drm_crtc *crtc = state->crtcs[i];
|
|
|
|
|
|
|
|
if (!crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ret = drm_atomic_crtc_check(crtc, state->crtc_states[i]);
|
|
|
|
if (ret) {
|
|
|
|
DRM_DEBUG_KMS("[CRTC:%d] atomic core check failed\n",
|
|
|
|
crtc->base.id);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-07-26 03:30:38 +08:00
|
|
|
if (config->funcs->atomic_check)
|
2014-12-19 05:01:51 +08:00
|
|
|
ret = config->funcs->atomic_check(state->dev, state);
|
|
|
|
|
2014-12-19 05:01:56 +08:00
|
|
|
if (!state->allow_modeset) {
|
|
|
|
for (i = 0; i < ncrtcs; i++) {
|
|
|
|
struct drm_crtc *crtc = state->crtcs[i];
|
|
|
|
struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
|
|
|
|
|
if (!crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (crtc_state->mode_changed) {
|
|
|
|
DRM_DEBUG_KMS("[CRTC:%d] requires full modeset\n",
|
|
|
|
crtc->base.id);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-12-19 05:01:51 +08:00
|
|
|
return ret;
|
2014-07-26 03:30:38 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_check_only);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_commit - commit configuration atomically
|
|
|
|
* @state: atomic configuration to check
|
|
|
|
*
|
|
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
|
|
* backoff dance and restart. All other errors are fatal.
|
|
|
|
*
|
|
|
|
* Also note that on successful execution ownership of @state is transferred
|
|
|
|
* from the caller of this function to the function itself. The caller must not
|
|
|
|
* free or in any other way access @state. If the function fails then the caller
|
|
|
|
* must clean up @state itself.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, negative error code on failure.
|
|
|
|
*/
|
|
|
|
int drm_atomic_commit(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = drm_atomic_check_only(state);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("commiting %p\n", state);
|
|
|
|
|
|
|
|
return config->funcs->atomic_commit(state->dev, state, false);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_commit);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_atomic_async_commit - atomic&async configuration commit
|
|
|
|
* @state: atomic configuration to check
|
|
|
|
*
|
|
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
|
|
* backoff dance and restart. All other errors are fatal.
|
|
|
|
*
|
|
|
|
* Also note that on successful execution ownership of @state is transferred
|
|
|
|
* from the caller of this function to the function itself. The caller must not
|
|
|
|
* free or in any other way access @state. If the function fails then the caller
|
|
|
|
* must clean up @state itself.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, negative error code on failure.
|
|
|
|
*/
|
|
|
|
int drm_atomic_async_commit(struct drm_atomic_state *state)
|
|
|
|
{
|
|
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = drm_atomic_check_only(state);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("commiting %p asynchronously\n", state);
|
|
|
|
|
|
|
|
return config->funcs->atomic_commit(state->dev, state, true);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_atomic_async_commit);
|
2014-12-19 05:01:56 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The big monstor ioctl
|
|
|
|
*/
|
|
|
|
|
|
|
|
static struct drm_pending_vblank_event *create_vblank_event(
|
|
|
|
struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data)
|
|
|
|
{
|
|
|
|
struct drm_pending_vblank_event *e = NULL;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
|
if (file_priv->event_space < sizeof e->event) {
|
|
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
file_priv->event_space -= sizeof e->event;
|
|
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
|
|
|
|
e = kzalloc(sizeof *e, GFP_KERNEL);
|
|
|
|
if (e == NULL) {
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
|
file_priv->event_space += sizeof e->event;
|
|
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
|
|
|
|
e->event.base.length = sizeof e->event;
|
|
|
|
e->event.user_data = user_data;
|
|
|
|
e->base.event = &e->event.base;
|
|
|
|
e->base.file_priv = file_priv;
|
|
|
|
e->base.destroy = (void (*) (struct drm_pending_event *)) kfree;
|
|
|
|
|
|
|
|
out:
|
|
|
|
return e;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void destroy_vblank_event(struct drm_device *dev,
|
|
|
|
struct drm_file *file_priv, struct drm_pending_vblank_event *e)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
|
file_priv->event_space += sizeof e->event;
|
|
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
kfree(e);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int atomic_set_prop(struct drm_atomic_state *state,
|
|
|
|
struct drm_mode_object *obj, struct drm_property *prop,
|
|
|
|
uint64_t prop_value)
|
|
|
|
{
|
|
|
|
struct drm_mode_object *ref;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (!drm_property_change_valid_get(prop, prop_value, &ref))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
switch (obj->type) {
|
|
|
|
case DRM_MODE_OBJECT_CONNECTOR: {
|
|
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
|
|
struct drm_connector_state *connector_state;
|
|
|
|
|
|
|
|
connector_state = drm_atomic_get_connector_state(state, connector);
|
|
|
|
if (IS_ERR(connector_state)) {
|
|
|
|
ret = PTR_ERR(connector_state);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_atomic_connector_set_property(connector,
|
|
|
|
connector_state, prop, prop_value);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRM_MODE_OBJECT_CRTC: {
|
|
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
|
|
if (IS_ERR(crtc_state)) {
|
|
|
|
ret = PTR_ERR(crtc_state);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_atomic_crtc_set_property(crtc,
|
|
|
|
crtc_state, prop, prop_value);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case DRM_MODE_OBJECT_PLANE: {
|
|
|
|
struct drm_plane *plane = obj_to_plane(obj);
|
|
|
|
struct drm_plane_state *plane_state;
|
|
|
|
|
|
|
|
plane_state = drm_atomic_get_plane_state(state, plane);
|
|
|
|
if (IS_ERR(plane_state)) {
|
|
|
|
ret = PTR_ERR(plane_state);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_atomic_plane_set_property(plane,
|
|
|
|
plane_state, prop, prop_value);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_property_change_valid_put(prop, ref);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int drm_mode_atomic_ioctl(struct drm_device *dev,
|
|
|
|
void *data, struct drm_file *file_priv)
|
|
|
|
{
|
|
|
|
struct drm_mode_atomic *arg = data;
|
|
|
|
uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
|
|
|
|
uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
|
|
|
|
uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
|
|
|
|
uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
|
|
|
|
unsigned int copied_objs, copied_props;
|
|
|
|
struct drm_atomic_state *state;
|
|
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
|
|
struct drm_plane *plane;
|
|
|
|
unsigned plane_mask = 0;
|
|
|
|
int ret = 0;
|
|
|
|
unsigned int i, j;
|
|
|
|
|
|
|
|
/* disallow for drivers not supporting atomic: */
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* disallow for userspace that has not enabled atomic cap (even
|
|
|
|
* though this may be a bit overkill, since legacy userspace
|
|
|
|
* wouldn't know how to call this ioctl)
|
|
|
|
*/
|
|
|
|
if (!file_priv->atomic)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (arg->reserved)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
|
|
|
|
!dev->mode_config.async_page_flip)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* can't test and expect an event at the same time. */
|
|
|
|
if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
|
|
|
|
(arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
drm_modeset_acquire_init(&ctx, 0);
|
|
|
|
|
|
|
|
state = drm_atomic_state_alloc(dev);
|
|
|
|
if (!state)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
state->acquire_ctx = &ctx;
|
|
|
|
state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
|
|
|
|
|
|
|
|
retry:
|
|
|
|
copied_objs = 0;
|
|
|
|
copied_props = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < arg->count_objs; i++) {
|
|
|
|
uint32_t obj_id, count_props;
|
|
|
|
struct drm_mode_object *obj;
|
|
|
|
|
|
|
|
if (get_user(obj_id, objs_ptr + copied_objs)) {
|
|
|
|
ret = -EFAULT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY);
|
|
|
|
if (!obj || !obj->properties) {
|
|
|
|
ret = -ENOENT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (obj->type == DRM_MODE_OBJECT_PLANE) {
|
|
|
|
plane = obj_to_plane(obj);
|
|
|
|
plane_mask |= (1 << drm_plane_index(plane));
|
|
|
|
plane->old_fb = plane->fb;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (get_user(count_props, count_props_ptr + copied_objs)) {
|
|
|
|
ret = -EFAULT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
copied_objs++;
|
|
|
|
|
|
|
|
for (j = 0; j < count_props; j++) {
|
|
|
|
uint32_t prop_id;
|
|
|
|
uint64_t prop_value;
|
|
|
|
struct drm_property *prop;
|
|
|
|
|
|
|
|
if (get_user(prop_id, props_ptr + copied_props)) {
|
|
|
|
ret = -EFAULT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
prop = drm_property_find(dev, prop_id);
|
|
|
|
if (!prop) {
|
|
|
|
ret = -ENOENT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
2015-01-13 13:12:17 +08:00
|
|
|
if (copy_from_user(&prop_value,
|
|
|
|
prop_values_ptr + copied_props,
|
|
|
|
sizeof(prop_value))) {
|
2014-12-19 05:01:56 +08:00
|
|
|
ret = -EFAULT;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = atomic_set_prop(state, obj, prop, prop_value);
|
|
|
|
if (ret)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
copied_props++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
|
|
int ncrtcs = dev->mode_config.num_crtc;
|
|
|
|
|
|
|
|
for (i = 0; i < ncrtcs; i++) {
|
|
|
|
struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
|
struct drm_pending_vblank_event *e;
|
|
|
|
|
|
|
|
if (!crtc_state)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
e = create_vblank_event(dev, file_priv, arg->user_data);
|
|
|
|
if (!e) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
crtc_state->event = e;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
|
|
|
|
ret = drm_atomic_check_only(state);
|
|
|
|
/* _check_only() does not free state, unlike _commit() */
|
|
|
|
drm_atomic_state_free(state);
|
|
|
|
} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
|
|
|
|
ret = drm_atomic_async_commit(state);
|
|
|
|
} else {
|
|
|
|
ret = drm_atomic_commit(state);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
|
|
|
|
* locks (ie. while it is still safe to deref plane->state). We
|
|
|
|
* need to do this here because the driver entry points cannot
|
|
|
|
* distinguish between legacy and atomic ioctls.
|
|
|
|
*/
|
|
|
|
drm_for_each_plane_mask(plane, dev, plane_mask) {
|
|
|
|
if (ret == 0) {
|
|
|
|
struct drm_framebuffer *new_fb = plane->state->fb;
|
|
|
|
if (new_fb)
|
|
|
|
drm_framebuffer_reference(new_fb);
|
|
|
|
plane->fb = new_fb;
|
|
|
|
plane->crtc = plane->state->crtc;
|
|
|
|
} else {
|
|
|
|
plane->old_fb = NULL;
|
|
|
|
}
|
|
|
|
if (plane->old_fb) {
|
|
|
|
drm_framebuffer_unreference(plane->old_fb);
|
|
|
|
plane->old_fb = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
if (ret == -EDEADLK)
|
|
|
|
goto backoff;
|
|
|
|
|
|
|
|
if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
|
|
int ncrtcs = dev->mode_config.num_crtc;
|
|
|
|
|
|
|
|
for (i = 0; i < ncrtcs; i++) {
|
|
|
|
struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
|
|
|
|
|
if (!crtc_state)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
destroy_vblank_event(dev, file_priv, crtc_state->event);
|
|
|
|
crtc_state->event = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_atomic_state_free(state);
|
|
|
|
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
backoff:
|
|
|
|
drm_atomic_state_clear(state);
|
|
|
|
drm_modeset_backoff(&ctx);
|
|
|
|
|
|
|
|
goto retry;
|
|
|
|
}
|