| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * EdgeTPU Ultra Short Reach utilities. |
| * |
| * Copyright (C) 2020 Google, Inc. |
| */ |
| #ifndef __EDGETPU_USR_H__ |
| #define __EDGETPU_USR_H__ |
| |
| #include "edgetpu-config.h" |
| #include "edgetpu-device-group.h" |
| |
| #ifdef EDGETPU_HAS_VN |
| |
| /* |
| * Trains the USR links of devices in @group. |
| * |
| * Caller ensures edgetpu_device_group_nth_etdev available to @group and holds |
| * @group->lock. |
| */ |
| void edgetpu_usr_init_group(struct edgetpu_device_group *group); |
| |
| /* |
| * Stop the USR ring for all devices in @group. |
| * Caller holds @group->lock. |
| */ |
| void edgetpu_usr_release_group(struct edgetpu_device_group *group); |
| |
| #else /* !EDGETPU_HAS_VN */ |
| |
| static inline void edgetpu_usr_init_group(struct edgetpu_device_group *group) |
| { |
| } |
| |
| static inline void |
| edgetpu_usr_release_group(struct edgetpu_device_group *group) |
| { |
| } |
| #endif /* EDGETPU_HAS_VN */ |
| |
| #endif /* __EDGETPU_USR_H__ */ |
