nes-proj/cpu/x86/drivers/quarkX1000/msg-bus.h

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/*
* Copyright (C) 2015-2016, Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``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
* COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#ifndef CPU_X86_DRIVERS_QUARKX1000_MSG_BUS_H_
#define CPU_X86_DRIVERS_QUARKX1000_MSG_BUS_H_
#include <stdint.h>
/* Routines for accessing the message bus.
*
* The Intel Quark X1000 SoC includes a message bus that is accessible
* via PCI configuration registers. It communicates to various SoC
* components such as the Isolated Memory Region (IMR) registers and the
* Remote Management Unit.
*
* Refer to Intel Quark SoC X1000 Datasheet, Section 12.5 for more details on
* the message bus.
*/
void quarkX1000_msg_bus_init(void);
void quarkX1000_msg_bus_lock(void);
void quarkX1000_msg_bus_read(uint8_t port, uint32_t reg_off, uint32_t *val);
void quarkX1000_msg_bus_write(uint8_t port, uint32_t reg_off, uint32_t val);
#endif /* CPU_X86_DRIVERS_QUARKX1000_MSG_BUS_H_ */