LXR qemu/include/hw/timer/sifive

   1/*
   2 * SiFive PWM
   3 *
   4 * Copyright (c) 2020 Western Digital
   5 *
   6 * Author:  Alistair Francis <alistair.francis@wdc.com>
   7 *
   8 * Permission is hereby granted, free of charge, to any person obtaining a copy
   9 * of this software and associated documentation files (the "Software"), to deal
  10 * in the Software without restriction, including without limitation the rights
  11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 * copies of the Software, and to permit persons to whom the Software is
  13 * furnished to do so, subject to the following conditions:
  14 *
  15 * The above copyright notice and this permission notice shall be included in
  16 * all copies or substantial portions of the Software.
  17 *
  18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 * THE SOFTWARE.
  25 */
  26
  27#ifndef HW_SIFIVE_PWM_H
  28#define HW_SIFIVE_PWM_H
  29
  30#include "hw/sysbus.h"
  31#include "qemu/timer.h"
  32#include "qom/object.h"
  33
  34#define TYPE_SIFIVE_PWM "sifive-pwm"
  35
  36#define SIFIVE_PWM(obj) \
  37    OBJECT_CHECK(SiFivePwmState, (obj), TYPE_SIFIVE_PWM)
  38
  39#define SIFIVE_PWM_CHANS          4
  40#define SIFIVE_PWM_IRQS           SIFIVE_PWM_CHANS
  41
  42typedef struct SiFivePwmState {
  43    /* <private> */
  44    SysBusDevice parent_obj;
  45
  46    /* <public> */
  47    MemoryRegion mmio;
  48    QEMUTimer timer[SIFIVE_PWM_CHANS];
  49    /*
  50     * if en bit(s) set, is the number of ticks when pwmcount was 0
  51     * if en bit(s) not set, is the number of ticks in pwmcount
  52     */
  53    uint64_t tick_offset;
  54    uint64_t freq_hz;
  55
  56    uint32_t pwmcfg;
  57    uint32_t pwmcmp[SIFIVE_PWM_CHANS];
  58
  59    qemu_irq irqs[SIFIVE_PWM_IRQS];
  60} SiFivePwmState;
  61
  62#endif /* HW_SIFIVE_PWM_H */
  63