diff options
Diffstat (limited to 'kernel/ethosu_mailbox.h')
| -rw-r--r-- | kernel/ethosu_mailbox.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/ethosu_mailbox.h b/kernel/ethosu_mailbox.h index 956685b..55d4436 100644 --- a/kernel/ethosu_mailbox.h +++ b/kernel/ethosu_mailbox.h @@ -55,7 +55,15 @@ struct ethosu_mailbox { struct mbox_chan *tx; ethosu_mailbox_cb callback; void *user_arg; + struct list_head pending_list; struct ethosu_watchdog *wdog; + unsigned ping_count; +}; + +struct ethosu_mailbox_msg { + struct list_head list; + void (*fail)(struct ethosu_mailbox_msg *msg); + int (*resend)(struct ethosu_mailbox_msg *msg); }; /**************************************************************************** @@ -81,6 +89,26 @@ int ethosu_mailbox_init(struct ethosu_mailbox *mbox, void ethosu_mailbox_deinit(struct ethosu_mailbox *mbox); /** + * ethosu_mailbox_wait_prepare() - Prepare to wait on firmware + * + * This function must only be called when the firmware is in a + * stopped state. It invalidates the firmware queues setting + * size, read and write positions to illegal values. + */ +void ethosu_mailbox_wait_prepare(struct ethosu_mailbox *mbox); + +/** + * ethosu_mailbox_wait_firmware() - Waiting for firmware to initialize + * message queues + * + * Following a call to ethosu_mailbox_wait_prepare() this function waits for + * the firmware to boot up and initialize the firmware queues. + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_wait_firmware(struct ethosu_mailbox *mbox); + +/** * ethosu_mailbox_read() - Read message from mailbox * * Return: 0 message read, else error code. @@ -91,6 +119,30 @@ int ethosu_mailbox_read(struct ethosu_mailbox *mbox, size_t length); /** + * ethosu_mailbox_find() - Find mailbox message + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_find(struct ethosu_mailbox *mbox, + struct ethosu_mailbox_msg *msg); + +/** + * ethosu_mailbox_fail() - Fail mailbox messages + * + * Call fail() callback on all messages in pending list. + */ +void ethosu_mailbox_fail(struct ethosu_mailbox *mbox); + +/** + * ethosu_mailbox_resend() - Resend mailbox messages + * + * Call resend() callback on all messages in pending list. + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_resend(struct ethosu_mailbox *mbox); + +/** * ethosu_mailbox_reset() - Reset to end of queue */ void ethosu_mailbox_reset(struct ethosu_mailbox *mbox); |