/*
* Copyright (c) 2008 Pavel Rimsky
* Copyright (c) 2017 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup kernel_sparc64
* @{
*/
/**
* @file
* @brief Niagara input/output buffer shared between kernel and user space
*/
#ifdef KERNEL
#include <mm/as.h>
#else
#include <as.h>
#endif
#include <stdint.h>
#define OUTPUT_BUFFER_SIZE ((PAGE_SIZE) - 2 * 8)
typedef struct {
uint64_t read_ptr;
uint64_t write_ptr;
char data[OUTPUT_BUFFER_SIZE];
} __attribute__((packed)) niagara_output_buffer_t;
#define INPUT_BUFFER_SIZE ((PAGE_SIZE) - 2 * 8)
typedef struct {
uint64_t write_ptr;
uint64_t read_ptr;
char data[INPUT_BUFFER_SIZE];
} __attribute__((packed)) niagara_input_buffer_t;
/** @}
*/