#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_fourcc.h>
+#include <drm/drm_modeset_lock.h>
#include "drm_crtc_internal.h"
+static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
+ struct drm_mode_fb_cmd2 *r,
+ struct drm_file *file_priv);
+
/**
* drm_modeset_lock_all - take all modeset locks
* @dev: drm device
*/
void drm_modeset_lock_all(struct drm_device *dev)
{
- struct drm_crtc *crtc;
+ struct drm_mode_config *config = &dev->mode_config;
+ struct drm_modeset_acquire_ctx *ctx;
+ int ret;
- mutex_lock(&dev->mode_config.mutex);
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (WARN_ON(!ctx))
+ return;
- mutex_lock(&dev->mode_config.connection_mutex);
+ mutex_lock(&config->mutex);
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
- mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
+ drm_modeset_acquire_init(ctx, 0);
+
+retry:
+ ret = drm_modeset_lock(&config->connection_mutex, ctx);
+ if (ret)
+ goto fail;
+ ret = drm_modeset_lock_all_crtcs(dev, ctx);
+ if (ret)
+ goto fail;
+
+ WARN_ON(config->acquire_ctx);
+
+ /* now we hold the locks, so now that it is safe, stash the
+ * ctx for drm_modeset_unlock_all():
+ */
+ config->acquire_ctx = ctx;
+
+ drm_warn_on_modeset_not_all_locked(dev);
+
+ return;
+
+fail:
+ if (ret == -EDEADLK) {
+ drm_modeset_backoff(ctx);
+ goto retry;
+ }
}
EXPORT_SYMBOL(drm_modeset_lock_all);
*/
void drm_modeset_unlock_all(struct drm_device *dev)
{
- struct drm_crtc *crtc;
+ struct drm_mode_config *config = &dev->mode_config;
+ struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
- mutex_unlock(&crtc->mutex);
+ if (WARN_ON(!ctx))
+ return;
+
+ config->acquire_ctx = NULL;
+ drm_modeset_drop_locks(ctx);
+ drm_modeset_acquire_fini(ctx);
- mutex_unlock(&dev->mode_config.connection_mutex);
+ kfree(ctx);
mutex_unlock(&dev->mode_config.mutex);
}
return;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
- WARN_ON(!mutex_is_locked(&crtc->mutex));
+ WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
- WARN_ON(!mutex_is_locked(&dev->mode_config.connection_mutex));
+ WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
}
EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
}
EXPORT_SYMBOL(drm_framebuffer_remove);
+DEFINE_WW_CLASS(crtc_ww_class);
+
/**
* drm_crtc_init_with_planes - Initialise a new CRTC object with
* specified primary and cursor planes.
void *cursor,
const struct drm_crtc_funcs *funcs)
{
+ struct drm_mode_config *config = &dev->mode_config;
int ret;
crtc->dev = dev;
crtc->invert_dimensions = false;
drm_modeset_lock_all(dev);
- mutex_init(&crtc->mutex);
- mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
+ drm_modeset_lock_init(&crtc->mutex);
+ /* dropped by _unlock_all(): */
+ drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
if (ret)
crtc->base.properties = &crtc->properties;
- list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
- dev->mode_config.num_crtc++;
+ list_add_tail(&crtc->head, &config->crtc_list);
+ config->num_crtc++;
crtc->primary = primary;
if (primary)
kfree(crtc->gamma_store);
crtc->gamma_store = NULL;
+ drm_modeset_lock_fini(&crtc->mutex);
+
drm_mode_object_put(dev, &crtc->base);
list_del(&crtc->head);
dev->mode_config.num_crtc--;
DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
mutex_lock(&dev->mode_config.mutex);
- mutex_lock(&dev->mode_config.connection_mutex);
connector = drm_connector_find(dev, out_resp->connector_id);
if (!connector) {
out_resp->mm_height = connector->display_info.height_mm;
out_resp->subpixel = connector->display_info.subpixel_order;
out_resp->connection = connector->status;
+ drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->encoder)
out_resp->encoder_id = connector->encoder->base.id;
else
out_resp->encoder_id = 0;
+ drm_modeset_unlock(&dev->mode_config.connection_mutex);
/*
* This ioctl is called twice, once to determine how much space is
out_resp->count_encoders = encoders_count;
out:
- mutex_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
return ret;
goto out;
}
+ /* Check whether this plane is usable on this CRTC */
+ if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
+ DRM_DEBUG_KMS("Invalid crtc for plane\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
if (!fb) {
DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
return -ENOENT;
}
- mutex_lock(&crtc->mutex);
+ drm_modeset_lock(&crtc->mutex, NULL);
if (req->flags & DRM_MODE_CURSOR_BO) {
if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
ret = -ENXIO;
}
}
out:
- mutex_unlock(&crtc->mutex);
+ drm_modeset_unlock(&crtc->mutex);
return ret;
return 0;
}
-/**
- * drm_mode_addfb2 - add an FB to the graphics configuration
- * @dev: drm device for the ioctl
- * @data: data pointer for the ioctl
- * @file_priv: drm file for the ioctl call
- *
- * Add a new FB to the specified CRTC, given a user request with format. This is
- * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
- * and uses fourcc codes as pixel format specifiers.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, errno on failure.
- */
-int drm_mode_addfb2(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
+static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
+ struct drm_mode_fb_cmd2 *r,
+ struct drm_file *file_priv)
{
- struct drm_mode_fb_cmd2 *r = data;
struct drm_mode_config *config = &dev->mode_config;
struct drm_framebuffer *fb;
int ret;
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
if (r->flags & ~DRM_MODE_FB_INTERLACED) {
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
}
if ((config->min_width > r->width) || (r->width > config->max_width)) {
DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
r->width, config->min_width, config->max_width);
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
}
if ((config->min_height > r->height) || (r->height > config->max_height)) {
DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
r->height, config->min_height, config->max_height);
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
}
ret = framebuffer_check(r);
if (ret)
- return ret;
+ return ERR_PTR(ret);
fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
if (IS_ERR(fb)) {
DRM_DEBUG_KMS("could not create framebuffer\n");
- return PTR_ERR(fb);
+ return fb;
}
mutex_lock(&file_priv->fbs_lock);
DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
mutex_unlock(&file_priv->fbs_lock);
+ return fb;
+}
- return ret;
+/**
+ * drm_mode_addfb2 - add an FB to the graphics configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Add a new FB to the specified CRTC, given a user request with format. This is
+ * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
+ * and uses fourcc codes as pixel format specifiers.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_addfb2(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_framebuffer *fb;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ fb = add_framebuffer_internal(dev, data, file_priv);
+ if (IS_ERR(fb))
+ return PTR_ERR(fb);
+
+ return 0;
}
/**
if (!crtc)
return -ENOENT;
- mutex_lock(&crtc->mutex);
+ drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->primary->fb == NULL) {
/* The framebuffer is currently unbound, presumably
* due to a hotplug event, that userspace has not
drm_framebuffer_unreference(fb);
if (old_fb)
drm_framebuffer_unreference(old_fb);
- mutex_unlock(&crtc->mutex);
+ drm_modeset_unlock(&crtc->mutex);
return ret;
}
void drm_mode_config_init(struct drm_device *dev)
{
mutex_init(&dev->mode_config.mutex);
- mutex_init(&dev->mode_config.connection_mutex);
+ drm_modeset_lock_init(&dev->mode_config.connection_mutex);
mutex_init(&dev->mode_config.idr_mutex);
mutex_init(&dev->mode_config.fb_lock);
INIT_LIST_HEAD(&dev->mode_config.fb_list);
}
idr_destroy(&dev->mode_config.crtc_idr);
+ drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
projects / deliverable / linux.git / blobdiff