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 "hw/ptimer.h"
  26
  27 #define ASPEED_TIMER(obj) \
  28     OBJECT_CHECK(AspeedTimerCtrlState, (obj), TYPE_ASPEED_TIMER);
  29 #define TYPE_ASPEED_TIMER "aspeed.timer"
  30 #define ASPEED_TIMER_NR_TIMERS 8
  31
  32 typedef struct AspeedTimer {
  33     qemu_irq irq;
  34
  35     uint8_t id;
  36
  37     /**
  38      * Track the line level as the ASPEED timers implement edge triggered
  39      * interrupts, signalling with both the rising and falling edge.
  40      */
  41     int32_t level;
  42     ptimer_state *timer;
  43     uint32_t reload;
  44     uint32_t match[2];
  45 } AspeedTimer;
  46
  47 typedef struct AspeedTimerCtrlState {
  48     /*< private >*/
  49     SysBusDevice parent;
  50
  51     /*< public >*/
  52     MemoryRegion iomem;
  53
  54     uint32_t ctrl;
  55     uint32_t ctrl2;
  56     AspeedTimer timers[ASPEED_TIMER_NR_TIMERS];
  57 } AspeedTimerCtrlState;
  58
  59 #endif /* ASPEED_TIMER_H */