include/hw/timer/aspeed_timer.h

   1 /*
   2  *  ASPEED AST2400 Timer
   3  *
   4  *  Andrew Jeffery <andrew@aj.id.au>
   5  *
   6  *  Copyright (C) 2016 IBM Corp.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 #ifndef ASPEED_TIMER_H
  23 #define ASPEED_TIMER_H
  24
  25 #include "qemu/timer.h"
  26
  27 typedef struct AspeedSCUState AspeedSCUState;
  28
  29 #define ASPEED_TIMER(obj) \
  30     OBJECT_CHECK(AspeedTimerCtrlState, (obj), TYPE_ASPEED_TIMER);
  31 #define TYPE_ASPEED_TIMER "aspeed.timer"
  32 #define ASPEED_TIMER_NR_TIMERS 8
  33
  34 typedef struct AspeedTimer {
  35     qemu_irq irq;
  36
  37     uint8_t id;
  38     QEMUTimer timer;
  39
  40     /**
  41      * Track the line level as the ASPEED timers implement edge triggered
  42      * interrupts, signalling with both the rising and falling edge.
  43      */
  44     int32_t level;
  45     uint32_t reload;
  46     uint32_t match[2];
  47     uint64_t start;
  48 } AspeedTimer;
  49
  50 typedef struct AspeedTimerCtrlState {
  51     /*< private >*/
  52     SysBusDevice parent;
  53
  54     /*< public >*/
  55     MemoryRegion iomem;
  56
  57     uint32_t ctrl;
  58     uint32_t ctrl2;
  59     AspeedTimer timers[ASPEED_TIMER_NR_TIMERS];
  60
  61     AspeedSCUState *scu;
  62 } AspeedTimerCtrlState;
  63
  64 #endif /* ASPEED_TIMER_H */