| 1 | /* |
| 2 | * Raspberry Pi emulation (c) 2012 Gregory Estrade |
| 3 | * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous |
| 4 | * |
| 5 | * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft |
| 6 | * Written by Andrew Baumann |
| 7 | * |
| 8 | * ARM Local Timer IRQ Copyright (c) 2019. Zoltán Baldaszti |
| 9 | * Added basic IRQ_TIMER interrupt support |
| 10 | * |
| 11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 12 | * See the COPYING file in the top-level directory. |
| 13 | */ |
| 14 | |
| 15 | #ifndef BCM2836_CONTROL_H |
| 16 | #define BCM2836_CONTROL_H |
| 17 | |
| 18 | #include "hw/core/sysbus.h" |
| 19 | #include "qemu/timer.h" |
| 20 | #include "qom/object.h" |
| 21 | |
| 22 | /* 4 mailboxes per core, for 16 total */ |
| 23 | #define BCM2836_NCORES 4 |
| 24 | #define BCM2836_MBPERCORE 4 |
| 25 | |
| 26 | #define TYPE_BCM2836_CONTROL "bcm2836-control" |
| 27 | OBJECT_DECLARE_SIMPLE_TYPE(BCM2836ControlState, BCM2836_CONTROL) |
| 28 | |
| 29 | struct BCM2836ControlState { |
| 30 | /*< private >*/ |
| 31 | SysBusDevice busdev; |
| 32 | /*< public >*/ |
| 33 | MemoryRegion iomem; |
| 34 | |
| 35 | /* mailbox state */ |
| 36 | uint32_t mailboxes[BCM2836_NCORES * BCM2836_MBPERCORE]; |
| 37 | |
| 38 | /* interrupt routing/control registers */ |
| 39 | uint8_t route_gpu_irq, route_gpu_fiq; |
| 40 | uint32_t timercontrol[BCM2836_NCORES]; |
| 41 | uint32_t mailboxcontrol[BCM2836_NCORES]; |
| 42 | |
| 43 | /* interrupt status regs (derived from input pins; not visible to user) */ |
| 44 | bool gpu_irq, gpu_fiq; |
| 45 | uint8_t timerirqs[BCM2836_NCORES]; |
| 46 | |
| 47 | /* local timer */ |
| 48 | QEMUTimer timer; |
| 49 | uint32_t local_timer_control; |
| 50 | uint8_t route_localtimer; |
| 51 | |
| 52 | /* interrupt source registers, post-routing (also input-derived; visible) */ |
| 53 | uint32_t irqsrc[BCM2836_NCORES]; |
| 54 | uint32_t fiqsrc[BCM2836_NCORES]; |
| 55 | |
| 56 | /* outputs to CPU cores */ |
| 57 | qemu_irq irq[BCM2836_NCORES]; |
| 58 | qemu_irq fiq[BCM2836_NCORES]; |
| 59 | }; |
| 60 | |
| 61 | #endif |