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/*
* hl_gw.h -- Hostlink gateway, low-level hostlink functions.
* This header should not be used directly, please use hl_api.h instead.
*
* Copyright (c) 2024 Synopsys Inc.
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*
*/
#ifndef _HL_GW_H
#define _HL_GW_H
#include <stdint.h>
#include "hl_toolchain.h"
/* Get hostlink payload pointer and size available for using. */
volatile __uncached void *_hl_payload (void);
/* Maximum amount of data that can be sent via hostlink in one message. */
uint32_t _hl_iochunk_size (void);
/*
* How many bytes are available in the hostlink payload buffer.
* This may be bigger than iochunk size because hostlink payload also contains
* reserved space for service information.
*/
uint32_t _hl_payload_left (volatile __uncached void *p);
/* Send and receive hostlink packet. */
void _hl_send (volatile __uncached void *p);
volatile __uncached char *_hl_recv (void);
/* Mark target2host buffer as "No message here". */
void _hl_delete (void);
#endif /* !_HL_GW_H */
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