mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 04:18:39 +08:00
85a9538065
Support virtual mailbox controllers and clients which are not platform devices or come from the devicetree by allowing them to match client to channel via some other mechanism. Tested-by: Sudeep Holla <sudeep.holla@arm.com> (pcc) Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2013-2014 Linaro Ltd.
|
|
* Author: Jassi Brar <jassisinghbrar@gmail.com>
|
|
*/
|
|
|
|
#ifndef __MAILBOX_CLIENT_H
|
|
#define __MAILBOX_CLIENT_H
|
|
|
|
#include <linux/of.h>
|
|
#include <linux/device.h>
|
|
|
|
struct mbox_chan;
|
|
|
|
/**
|
|
* struct mbox_client - User of a mailbox
|
|
* @dev: The client device
|
|
* @tx_block: If the mbox_send_message should block until data is
|
|
* transmitted.
|
|
* @tx_tout: Max block period in ms before TX is assumed failure
|
|
* @knows_txdone: If the client could run the TX state machine. Usually
|
|
* if the client receives some ACK packet for transmission.
|
|
* Unused if the controller already has TX_Done/RTR IRQ.
|
|
* @rx_callback: Atomic callback to provide client the data received
|
|
* @tx_prepare: Atomic callback to ask client to prepare the payload
|
|
* before initiating the transmission if required.
|
|
* @tx_done: Atomic callback to tell client of data transmission
|
|
*/
|
|
struct mbox_client {
|
|
struct device *dev;
|
|
bool tx_block;
|
|
unsigned long tx_tout;
|
|
bool knows_txdone;
|
|
|
|
void (*rx_callback)(struct mbox_client *cl, void *mssg);
|
|
void (*tx_prepare)(struct mbox_client *cl, void *mssg);
|
|
void (*tx_done)(struct mbox_client *cl, void *mssg, int r);
|
|
};
|
|
|
|
int mbox_bind_client(struct mbox_chan *chan, struct mbox_client *cl);
|
|
struct mbox_chan *mbox_request_channel_byname(struct mbox_client *cl,
|
|
const char *name);
|
|
struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index);
|
|
int mbox_send_message(struct mbox_chan *chan, void *mssg);
|
|
int mbox_flush(struct mbox_chan *chan, unsigned long timeout);
|
|
void mbox_client_txdone(struct mbox_chan *chan, int r); /* atomic */
|
|
bool mbox_client_peek_data(struct mbox_chan *chan); /* atomic */
|
|
void mbox_free_channel(struct mbox_chan *chan); /* may sleep */
|
|
|
|
#endif /* __MAILBOX_CLIENT_H */
|