diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2019-02-28 10:55:15 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-02-28 11:03:04 +0000 |
| commit | cdf63440eaaee531e2f5b84a833a707f3825e2ac (patch) | |
| tree | 93947d434f7ac28d0556b9faffb7e32976fa3d53 /include/hw | |
| parent | adf2e451f357e993f173ba9b4176dbf3e65fee7e (diff) | |
hw/misc/armsse-mhu.c: Model the SSE-200 Message Handling Unit
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
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/misc/armsse-mhu.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/hw/misc/armsse-mhu.h b/include/hw/misc/armsse-mhu.h new file mode 100644 index 0000000000..e57eafc252 --- /dev/null +++ b/include/hw/misc/armsse-mhu.h @@ -0,0 +1,44 @@ +/* + * 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 |