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author | Kristofer Jonsson <kristofer.jonsson@arm.com> | 2020-08-20 17:25:23 +0200 |
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committer | Kristofer Jonsson <kristofer.jonsson@arm.com> | 2020-08-27 13:58:01 +0200 |
commit | 116a635581f292cb4882ea1a086f842904f85c3c (patch) | |
tree | 96ed12cebd8dbf9f1dc7b8f116be7d528779a2bb /kernel/ethosu_mailbox.h | |
parent | cd13a572fe223fe95cd58c5b55b659885fb7b4cd (diff) | |
download | ethos-u-linux-driver-stack-116a635581f292cb4882ea1a086f842904f85c3c.tar.gz |
Change-Id: I14b6becc908a0ac215769c32ee9c43db192ae6c8
Diffstat (limited to 'kernel/ethosu_mailbox.h')
-rw-r--r-- | kernel/ethosu_mailbox.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/kernel/ethosu_mailbox.h b/kernel/ethosu_mailbox.h new file mode 100644 index 0000000..c5865d0 --- /dev/null +++ b/kernel/ethosu_mailbox.h @@ -0,0 +1,107 @@ +/* + * (C) COPYRIGHT 2020 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, you can access it online at + * http://www.gnu.org/licenses/gpl-2.0.html. + * + * SPDX-License-Identifier: GPL-2.0-only + */ + +#ifndef ETHOSU_MAILBOX_H +#define ETHOSU_MAILBOX_H + +/**************************************************************************** + * Includes + ****************************************************************************/ + +#include <linux/types.h> +#include <linux/mailbox_client.h> +#include <linux/workqueue.h> + +/**************************************************************************** + * Types + ****************************************************************************/ + +struct device; +struct ethosu_buffer; +struct ethosu_device; +struct ethosu_core_msg; +struct ethosu_core_queue; +struct resource; + +typedef void (*ethosu_mailbox_cb)(void *user_arg); + +struct ethosu_mailbox { + struct device *dev; + struct workqueue_struct *wq; + struct work_struct work; + struct ethosu_core_queue __iomem *in_queue; + struct ethosu_core_queue __iomem *out_queue; + struct mbox_client client; + struct mbox_chan *rx; + struct mbox_chan *tx; + ethosu_mailbox_cb callback; + void *user_arg; +}; + +/**************************************************************************** + * Functions + ****************************************************************************/ + +/** + * ethosu_mailbox_init() - Initialize mailbox + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_init(struct ethosu_mailbox *mbox, + struct device *dev, + struct resource *in_queue, + struct resource *out_queue, + ethosu_mailbox_cb callback, + void *user_arg); + +/** + * ethosu_mailbox_deinit() - Deinitialize mailbox + */ +void ethosu_mailbox_deinit(struct ethosu_mailbox *mbox); + +/** + * ethosu_mailbox_read() - Read message from mailbox + * + * Return: 0 message read, else error code. + */ +int ethosu_mailbox_read(struct ethosu_mailbox *mbox, + struct ethosu_core_msg *header, + void *data, + size_t length); + +/** + * ethosu_mailbox_ping() - Send ping message + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_ping(struct ethosu_mailbox *mbox); + +/** + * ethosu_mailbox_inference() - Send inference + * + * Return: 0 on success, else error code. + */ +int ethosu_mailbox_inference(struct ethosu_mailbox *mbox, + void *user_arg, + struct ethosu_buffer *ifm, + struct ethosu_buffer *ofm, + struct ethosu_buffer *network); + +#endif /* ETHOSU_MAILBOX_H */ |