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 #include "hw/misc/aspeed_scu.h"
  27
  28 #define ASPEED_TIMER(obj) \
  29     OBJECT_CHECK(AspeedTimerCtrlState, (obj), TYPE_ASPEED_TIMER);
  30 #define TYPE_ASPEED_TIMER "aspeed.timer"
  31 #define ASPEED_TIMER_NR_TIMERS 8
  32
  33 typedef struct AspeedTimer {
  34     qemu_irq irq;
  35
  36     uint8_t id;
  37     QEMUTimer timer;
  38
  39     /**
  40      * Track the line level as the ASPEED timers implement edge triggered
  41      * interrupts, signalling with both the rising and falling edge.
  42      */
  43     int32_t level;
  44     uint32_t reload;
  45     uint32_t match[2];
  46     uint64_t start;
  47 } AspeedTimer;
  48
  49 typedef struct AspeedTimerCtrlState {
  50     /*< private >*/
  51     SysBusDevice parent;
  52
  53     /*< public >*/
  54     MemoryRegion iomem;
  55
  56     uint32_t ctrl;
  57     uint32_t ctrl2;
  58     AspeedTimer timers[ASPEED_TIMER_NR_TIMERS];
  59
  60     AspeedSCUState *scu;
  61 } AspeedTimerCtrlState;
  62
  63 #endif /* ASPEED_TIMER_H */