include/hw/intc/bcm2836_control.h

   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/sysbus.h"
  19 #include "qemu/timer.h"
  20
  21 /* 4 mailboxes per core, for 16 total */
  22 #define BCM2836_NCORES 4
  23 #define BCM2836_MBPERCORE 4
  24
  25 #define TYPE_BCM2836_CONTROL "bcm2836-control"
  26 #define BCM2836_CONTROL(obj) \
  27     OBJECT_CHECK(BCM2836ControlState, (obj), TYPE_BCM2836_CONTROL)
  28
  29 typedef 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 } BCM2836ControlState;
  60
  61 #endif