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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* $FreeBSD$
*/
#ifndef _RPMSG_INTERNAL_H_
#define _RPMSG_INTERNAL_H_
#include <stdint.h>
#include <openamp/rpmsg.h>
#include <libmetal/compiler.h>
#ifdef RPMSG_DEBUG
#include <metal/log.h>
#define RPMSG_ASSERT(_exp, _msg) do { \
if (!(_exp)) { \
metal_log(METAL_LOG_EMERGENCY, \
"FATAL: %s - "_msg, __func__); \
while (1) { \
; \
} \
} \
} while (0)
#else
#define RPMSG_ASSERT(_exp, _msg) do { \
if (!(_exp)) \
while (1) { \
; \
} \
} while (0)
#endif
#define RPMSG_LOCATE_DATA(p) ((unsigned char *)(p) + sizeof(struct rpmsg_hdr))
/**
* enum rpmsg_ns_flags - dynamic name service announcement flags
*
* @RPMSG_NS_CREATE: a new remote service was just created
* @RPMSG_NS_DESTROY: a known remote service was just destroyed
* @RPMSG_NS_CREATE_WITH_ACK: a new remote service was just created waiting
* acknowledgment.
*/
enum rpmsg_ns_flags {
RPMSG_NS_CREATE = 0,
RPMSG_NS_DESTROY = 1,
};
/**
* struct rpmsg_hdr - common header for all rpmsg messages
* @src: source address
* @dst: destination address
* @reserved: reserved for future use
* @len: length of payload (in bytes)
* @flags: message flags
*
* Every message sent(/received) on the rpmsg bus begins with this header.
*/
OPENAMP_PACKED_BEGIN
struct rpmsg_hdr {
uint32_t src;
uint32_t dst;
uint32_t reserved;
uint16_t len;
uint16_t flags;
} OPENAMP_PACKED_END;
/**
* struct rpmsg_ns_msg - dynamic name service announcement message
* @name: name of remote service that is published
* @addr: address of remote service that is published
* @flags: indicates whether service is created or destroyed
*
* This message is sent across to publish a new service, or announce
* about its removal. When we receive these messages, an appropriate
* rpmsg channel (i.e device) is created/destroyed. In turn, the ->probe()
* or ->remove() handler of the appropriate rpmsg driver will be invoked
* (if/as-soon-as one is registered).
*/
OPENAMP_PACKED_BEGIN
struct rpmsg_ns_msg {
char name[RPMSG_NAME_SIZE];
uint32_t addr;
uint32_t flags;
} OPENAMP_PACKED_END;
int rpmsg_send_ns_message(struct rpmsg_endpoint *ept, unsigned long flags);
struct rpmsg_endpoint *rpmsg_get_endpoint(struct rpmsg_device *rvdev,
const char *name, uint32_t addr,
uint32_t dest_addr);
int rpmsg_register_endpoint(struct rpmsg_device *rdev,
struct rpmsg_endpoint *ept);
static inline struct rpmsg_endpoint *
rpmsg_get_ept_from_addr(struct rpmsg_device *rdev, uint32_t addr)
{
return rpmsg_get_endpoint(rdev, NULL, addr, RPMSG_ADDR_ANY);
}
#endif /* _RPMSG_INTERNAL_H_ */
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