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