diff options
Diffstat (limited to 'drivers/gpu/drm/drm_client.c')
| -rw-r--r-- | drivers/gpu/drm/drm_client.c | 200 |
1 files changed, 81 insertions, 119 deletions
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 9403b3f576f7..549b28a5918c 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -10,7 +10,6 @@ #include <linux/slab.h> #include <drm/drm_client.h> -#include <drm/drm_debugfs.h> #include <drm/drm_device.h> #include <drm/drm_drv.h> #include <drm/drm_file.h> @@ -172,86 +171,6 @@ void drm_client_release(struct drm_client_dev *client) } EXPORT_SYMBOL(drm_client_release); -void drm_client_dev_unregister(struct drm_device *dev) -{ - struct drm_client_dev *client, *tmp; - - if (!drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - mutex_lock(&dev->clientlist_mutex); - list_for_each_entry_safe(client, tmp, &dev->clientlist, list) { - list_del(&client->list); - if (client->funcs && client->funcs->unregister) { - client->funcs->unregister(client); - } else { - drm_client_release(client); - kfree(client); - } - } - mutex_unlock(&dev->clientlist_mutex); -} - -/** - * drm_client_dev_hotplug - Send hotplug event to clients - * @dev: DRM device - * - * This function calls the &drm_client_funcs.hotplug callback on the attached clients. - * - * drm_kms_helper_hotplug_event() calls this function, so drivers that use it - * don't need to call this function themselves. - */ -void drm_client_dev_hotplug(struct drm_device *dev) -{ - struct drm_client_dev *client; - int ret; - - if (!drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - if (!dev->mode_config.num_connector) { - drm_dbg_kms(dev, "No connectors found, will not send hotplug events!\n"); - return; - } - - mutex_lock(&dev->clientlist_mutex); - list_for_each_entry(client, &dev->clientlist, list) { - if (!client->funcs || !client->funcs->hotplug) - continue; - - if (client->hotplug_failed) - continue; - - ret = client->funcs->hotplug(client); - drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret); - if (ret) - client->hotplug_failed = true; - } - mutex_unlock(&dev->clientlist_mutex); -} -EXPORT_SYMBOL(drm_client_dev_hotplug); - -void drm_client_dev_restore(struct drm_device *dev) -{ - struct drm_client_dev *client; - int ret; - - if (!drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - mutex_lock(&dev->clientlist_mutex); - list_for_each_entry(client, &dev->clientlist, list) { - if (!client->funcs || !client->funcs->restore) - continue; - - ret = client->funcs->restore(client); - drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret); - if (!ret) /* The first one to return zero gets the privilege to restore */ - break; - } - mutex_unlock(&dev->clientlist_mutex); -} - static void drm_client_buffer_delete(struct drm_client_buffer *buffer) { if (buffer->gem) { @@ -305,6 +224,66 @@ err_delete: } /** + * drm_client_buffer_vmap_local - Map DRM client buffer into address space + * @buffer: DRM client buffer + * @map_copy: Returns the mapped memory's address + * + * This function maps a client buffer into kernel address space. If the + * buffer is already mapped, it returns the existing mapping's address. + * + * Client buffer mappings are not ref'counted. Each call to + * drm_client_buffer_vmap_local() should be closely followed by a call to + * drm_client_buffer_vunmap_local(). See drm_client_buffer_vmap() for + * long-term mappings. + * + * The returned address is a copy of the internal value. In contrast to + * other vmap interfaces, you don't need it for the client's vunmap + * function. So you can modify it at will during blit and draw operations. + * + * Returns: + * 0 on success, or a negative errno code otherwise. + */ +int drm_client_buffer_vmap_local(struct drm_client_buffer *buffer, + struct iosys_map *map_copy) +{ + struct drm_gem_object *gem = buffer->gem; + struct iosys_map *map = &buffer->map; + int ret; + + drm_gem_lock(gem); + + ret = drm_gem_vmap(gem, map); + if (ret) + goto err_drm_gem_vmap_unlocked; + *map_copy = *map; + + return 0; + +err_drm_gem_vmap_unlocked: + drm_gem_unlock(gem); + return ret; +} +EXPORT_SYMBOL(drm_client_buffer_vmap_local); + +/** + * drm_client_buffer_vunmap_local - Unmap DRM client buffer + * @buffer: DRM client buffer + * + * This function removes a client buffer's memory mapping established + * with drm_client_buffer_vunmap_local(). Calling this function is only + * required by clients that manage their buffer mappings by themselves. + */ +void drm_client_buffer_vunmap_local(struct drm_client_buffer *buffer) +{ + struct drm_gem_object *gem = buffer->gem; + struct iosys_map *map = &buffer->map; + + drm_gem_vunmap(gem, map); + drm_gem_unlock(gem); +} +EXPORT_SYMBOL(drm_client_buffer_vunmap_local); + +/** * drm_client_buffer_vmap - Map DRM client buffer into address space * @buffer: DRM client buffer * @map_copy: Returns the mapped memory's address @@ -328,24 +307,30 @@ int drm_client_buffer_vmap(struct drm_client_buffer *buffer, struct iosys_map *map_copy) { + struct drm_gem_object *gem = buffer->gem; struct iosys_map *map = &buffer->map; int ret; - /* - * FIXME: The dependency on GEM here isn't required, we could - * convert the driver handle to a dma-buf instead and use the - * backend-agnostic dma-buf vmap support instead. This would - * require that the handle2fd prime ioctl is reworked to pull the - * fd_install step out of the driver backend hooks, to make that - * final step optional for internal users. - */ - ret = drm_gem_vmap_unlocked(buffer->gem, map); + drm_gem_lock(gem); + + ret = drm_gem_pin_locked(gem); if (ret) - return ret; + goto err_drm_gem_pin_locked; + ret = drm_gem_vmap(gem, map); + if (ret) + goto err_drm_gem_vmap; + + drm_gem_unlock(gem); *map_copy = *map; return 0; + +err_drm_gem_vmap: + drm_gem_unpin_locked(buffer->gem); +err_drm_gem_pin_locked: + drm_gem_unlock(gem); + return ret; } EXPORT_SYMBOL(drm_client_buffer_vmap); @@ -359,9 +344,13 @@ EXPORT_SYMBOL(drm_client_buffer_vmap); */ void drm_client_buffer_vunmap(struct drm_client_buffer *buffer) { + struct drm_gem_object *gem = buffer->gem; struct iosys_map *map = &buffer->map; - drm_gem_vunmap_unlocked(buffer->gem, map); + drm_gem_lock(gem); + drm_gem_vunmap(gem, map); + drm_gem_unpin_locked(gem); + drm_gem_unlock(gem); } EXPORT_SYMBOL(drm_client_buffer_vunmap); @@ -501,30 +490,3 @@ int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_re 0, 0, NULL, 0); } EXPORT_SYMBOL(drm_client_framebuffer_flush); - -#ifdef CONFIG_DEBUG_FS -static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data) -{ - struct drm_debugfs_entry *entry = m->private; - struct drm_device *dev = entry->dev; - struct drm_printer p = drm_seq_file_printer(m); - struct drm_client_dev *client; - - mutex_lock(&dev->clientlist_mutex); - list_for_each_entry(client, &dev->clientlist, list) - drm_printf(&p, "%s\n", client->name); - mutex_unlock(&dev->clientlist_mutex); - - return 0; -} - -static const struct drm_debugfs_info drm_client_debugfs_list[] = { - { "internal_clients", drm_client_debugfs_internal_clients, 0 }, -}; - -void drm_client_debugfs_init(struct drm_device *dev) -{ - drm_debugfs_add_files(dev, drm_client_debugfs_list, - ARRAY_SIZE(drm_client_debugfs_list)); -} -#endif |