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/*******************************************************************************
* Copyright (C) 2018 Cadence Design Systems, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to use this Software with Cadence processor cores only and
* not with any other processors and platforms, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
******************************************************************************/
/*******************************************************************************
* xf-proxy.h
*
* Proxy commmand/response messages
*
*******************************************************************************/
#ifndef __XF_H
#error "xf-proxy.h mustn't be included directly"
#endif
/*******************************************************************************
* Types definitions
******************************************************************************/
#ifdef XAF_ENABLE_NON_HIKEY
/* ...command/response message */
typedef struct xf_proxy_message
{
/* ...session ID */
uint32_t session_id;
/* ...proxy API command/reponse code */
uint32_t opcode;
/* ...length of attached buffer */
uint32_t length;
/* ...physical address of message buffer */
uint64_t address;
uint64_t v_address;
} __attribute__((__packed__)) xf_proxy_message_t;
#else
/* ...command/response message */
typedef struct xf_proxy_message
{
/* ...session ID */
uint32_t session_id;
/* ...proxy API command/reponse code */
uint32_t opcode;
/* ...length of attached buffer */
uint32_t length;
/* ...physical address of message buffer */
uint64_t address;
uint64_t v_address;
} __attribute__((__packed__)) xf_proxy_message_t;
#endif
/*******************************************************************************
* Ring buffer support
******************************************************************************/
/* ...total length of shared memory queue (for commands and responses) */
#define XF_PROXY_MESSAGE_QUEUE_LENGTH (1 << 8)
/* ...index mask */
#define XF_PROXY_MESSAGE_QUEUE_MASK 0xFF
/* ...ring-buffer index */
#define __XF_QUEUE_IDX(idx, counter) \
(((idx) & XF_PROXY_MESSAGE_QUEUE_MASK) | ((counter) << 16))
/* ...retrieve ring-buffer index */
#define XF_QUEUE_IDX(idx) \
((idx) & XF_PROXY_MESSAGE_QUEUE_MASK)
/* ...increment ring-buffer index */
#define XF_QUEUE_ADVANCE_IDX(idx) \
(((idx) + 0x10001) & (0xFFFF0000 | XF_PROXY_MESSAGE_QUEUE_MASK))
/* ...test if ring buffer is empty */
#define XF_QUEUE_EMPTY(read, write) \
((read) == (write))
/* ...test if ring buffer is full */
#define XF_QUEUE_FULL(read, write) \
((write) == (read) + (XF_PROXY_MESSAGE_QUEUE_LENGTH << 16))
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