qemu/include/hw/intc/bcm2836_control.h
Andrew Baumann cc28296d82 bcm2836_control: add bcm2836 ARM control logic
This module is specific to the bcm2836 (Pi2). It implements the top
level interrupt controller, and mailboxes used for inter-processor
synchronisation.

Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-03 15:00:45 +00:00

52 lines
1.4 KiB
C

/*
* Raspberry Pi emulation (c) 2012 Gregory Estrade
* Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
*
* Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
* Written by Andrew Baumann
*
* This code is licensed under the GNU GPLv2 and later.
*/
#ifndef BCM2836_CONTROL_H
#define BCM2836_CONTROL_H
#include "hw/sysbus.h"
/* 4 mailboxes per core, for 16 total */
#define BCM2836_NCORES 4
#define BCM2836_MBPERCORE 4
#define TYPE_BCM2836_CONTROL "bcm2836-control"
#define BCM2836_CONTROL(obj) \
OBJECT_CHECK(BCM2836ControlState, (obj), TYPE_BCM2836_CONTROL)
typedef struct BCM2836ControlState {
/*< private >*/
SysBusDevice busdev;
/*< public >*/
MemoryRegion iomem;
/* mailbox state */
uint32_t mailboxes[BCM2836_NCORES * BCM2836_MBPERCORE];
/* interrupt routing/control registers */
uint8_t route_gpu_irq, route_gpu_fiq;
uint32_t timercontrol[BCM2836_NCORES];
uint32_t mailboxcontrol[BCM2836_NCORES];
/* interrupt status regs (derived from input pins; not visible to user) */
bool gpu_irq, gpu_fiq;
uint8_t timerirqs[BCM2836_NCORES];
/* interrupt source registers, post-routing (also input-derived; visible) */
uint32_t irqsrc[BCM2836_NCORES];
uint32_t fiqsrc[BCM2836_NCORES];
/* outputs to CPU cores */
qemu_irq irq[BCM2836_NCORES];
qemu_irq fiq[BCM2836_NCORES];
} BCM2836ControlState;
#endif