From 4981b82ba2ff87df6a711fcd7a233c615df5fc79 Mon Sep 17 00:00:00 2001 From: Wendy Liang Date: Thu, 21 Feb 2019 16:36:33 -0800 Subject: mailbox: ZynqMP IPI mailbox controller This patch is to introduce ZynqMP IPI mailbox controller driver to use the ZynqMP IPI block as mailboxes. Signed-off-by: Wendy Liang Signed-off-by: Jassi Brar --- include/linux/mailbox/zynqmp-ipi-message.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/linux/mailbox/zynqmp-ipi-message.h (limited to 'include/linux/mailbox/zynqmp-ipi-message.h') diff --git a/include/linux/mailbox/zynqmp-ipi-message.h b/include/linux/mailbox/zynqmp-ipi-message.h new file mode 100644 index 000000000000..9542b41eacfd --- /dev/null +++ b/include/linux/mailbox/zynqmp-ipi-message.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _LINUX_ZYNQMP_IPI_MESSAGE_H_ +#define _LINUX_ZYNQMP_IPI_MESSAGE_H_ + +/** + * struct zynqmp_ipi_message - ZynqMP IPI message structure + * @len: Length of message + * @data: message payload + * + * This is the structure for data used in mbox_send_message + * the maximum length of data buffer is fixed to 12 bytes. + * Client is supposed to be aware of this. + */ +struct zynqmp_ipi_message { + size_t len; + u8 data[0]; +}; + +#endif /* _LINUX_ZYNQMP_IPI_MESSAGE_H_ */ -- cgit v1.2.3