diff options
Diffstat (limited to 'drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h')
| -rw-r--r-- | drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h b/drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h index c88d2d7..835503f 100644 --- a/drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h +++ b/drivers/edgetpu/gcip-kernel-driver/include/gcip/gcip-mailbox.h @@ -133,14 +133,18 @@ struct gcip_mailbox_ops { void (*inc_cmd_queue_tail)(struct gcip_mailbox *mailbox, u32 inc); /* * Acquires the lock of cmd_queue. If @try is true, "_trylock" functions can be used, but - * also it can be ignored. Returns 1 if succeed, 0 if failed. This callback will be called - * in the following situations. + * also it can be ignored. If the lock will make the context atomic, @atomic must be set + * to true. Returns 1 if succeed, 0 if failed. + * + * This callback will be called in the following situations. * - Enqueue a command to the cmd_queue. + * * The lock can be mutex lock or spin lock and it will be released by calling * `release_cmd_queue_lock` callback. + * * Context: normal. */ - int (*acquire_cmd_queue_lock)(struct gcip_mailbox *mailbox, bool try); + int (*acquire_cmd_queue_lock)(struct gcip_mailbox *mailbox, bool try, bool *atomic); /* * Releases the lock of cmd_queue which is acquired by calling `acquire_cmd_queue_lock`. * Context: normal. @@ -184,15 +188,20 @@ struct gcip_mailbox_ops { void (*inc_resp_queue_head)(struct gcip_mailbox *mailbox, u32 inc); /* * Acquires the lock of resp_queue. If @try is true, "_trylock" functions can be used, but - * also it can be ignored. Returns 1 if succeed, 0 if failed. This callback will be called - * in the following situations. + * also it can be ignored. If the lock will make the context atomic, @atomic must be set + * to true. Returns 1 if succeed, 0 if failed. + * + * This callback will be called in the following situations: * - Fetch response(s) from the resp_queue. + * * The lock can be a mutex lock or a spin lock. However, if @try is considered and the * "_trylock" is used, it must be a spin lock only. + * * The lock will be released by calling `release_resp_queue_lock` callback. + * * Context: normal and in_interrupt(). */ - int (*acquire_resp_queue_lock)(struct gcip_mailbox *mailbox, bool try); + int (*acquire_resp_queue_lock)(struct gcip_mailbox *mailbox, bool try, bool *atomic); /* * Releases the lock of resp_queue which is acquired by calling `acquire_resp_queue_lock`. * Context: normal and in_interrupt(). |