qemu

FORK: QEMU emulator
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aspeed_timer.h (2213B)

      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 #include "qom/object.h"
     28 
     29 #define TYPE_ASPEED_TIMER "aspeed.timer"
     30 OBJECT_DECLARE_TYPE(AspeedTimerCtrlState, AspeedTimerClass, ASPEED_TIMER)
     31 #define TYPE_ASPEED_2400_TIMER TYPE_ASPEED_TIMER "-ast2400"
     32 #define TYPE_ASPEED_2500_TIMER TYPE_ASPEED_TIMER "-ast2500"
     33 #define TYPE_ASPEED_2600_TIMER TYPE_ASPEED_TIMER "-ast2600"
     34 #define TYPE_ASPEED_1030_TIMER TYPE_ASPEED_TIMER "-ast1030"
     35 
     36 #define ASPEED_TIMER_NR_TIMERS 8
     37 
     38 typedef struct AspeedTimer {
     39     qemu_irq irq;
     40 
     41     uint8_t id;
     42     QEMUTimer timer;
     43 
     44     /**
     45      * Track the line level as the ASPEED timers implement edge triggered
     46      * interrupts, signalling with both the rising and falling edge.
     47      */
     48     int32_t level;
     49     uint32_t reload;
     50     uint32_t match[2];
     51     uint64_t start;
     52 } AspeedTimer;
     53 
     54 struct AspeedTimerCtrlState {
     55     /*< private >*/
     56     SysBusDevice parent;
     57 
     58     /*< public >*/
     59     MemoryRegion iomem;
     60 
     61     uint32_t ctrl;
     62     uint32_t ctrl2;
     63     uint32_t ctrl3;
     64     uint32_t irq_sts;
     65     AspeedTimer timers[ASPEED_TIMER_NR_TIMERS];
     66 
     67     AspeedSCUState *scu;
     68 };
     69 
     70 
     71 struct AspeedTimerClass {
     72     SysBusDeviceClass parent_class;
     73 
     74     uint64_t (*read)(AspeedTimerCtrlState *s, hwaddr offset);
     75     void (*write)(AspeedTimerCtrlState *s, hwaddr offset, uint64_t value);
     76 };
     77 
     78 #endif /* ASPEED_TIMER_H */