cdf63440ea
Implement a model of the Message Handling Unit (MHU) found in the Arm SSE-200. This is a simple device which just contains some registers which allow the two cores of the SSE-200 to raise interrupts on each other. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20190219125808.25174-2-peter.maydell@linaro.org
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
|
|
* ARM SSE-200 Message Handling Unit (MHU)
|
|
*
|
|
* Copyright (c) 2019 Linaro Limited
|
|
* Written by Peter Maydell
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
/*
|
|
* This is a model of the Message Handling Unit (MHU) which is part of the
|
|
* Arm SSE-200 and documented in
|
|
* http://infocenter.arm.com/help/topic/com.arm.doc.101104_0100_00_en/corelink_sse200_subsystem_for_embedded_technical_reference_manual_101104_0100_00_en.pdf
|
|
*
|
|
* QEMU interface:
|
|
* + sysbus MMIO region 0: the system information register bank
|
|
* + sysbus IRQ 0: interrupt for CPU 0
|
|
* + sysbus IRQ 1: interrupt for CPU 1
|
|
*/
|
|
|
|
#ifndef HW_MISC_SSE_MHU_H
|
|
#define HW_MISC_SSE_MHU_H
|
|
|
|
#include "hw/sysbus.h"
|
|
|
|
#define TYPE_ARMSSE_MHU "armsse-mhu"
|
|
#define ARMSSE_MHU(obj) OBJECT_CHECK(ARMSSEMHU, (obj), TYPE_ARMSSE_MHU)
|
|
|
|
typedef struct ARMSSEMHU {
|
|
/*< private >*/
|
|
SysBusDevice parent_obj;
|
|
|
|
/*< public >*/
|
|
MemoryRegion iomem;
|
|
qemu_irq cpu0irq;
|
|
qemu_irq cpu1irq;
|
|
|
|
uint32_t cpu0intr;
|
|
uint32_t cpu1intr;
|
|
} ARMSSEMHU;
|
|
|
|
#endif
|