LXR qemu/include/hw/dma/i8257.h

   1#ifndef HW_I8257_H
   2#define HW_I8257_H
   3
   4#include "hw/isa/isa.h"
   5#include "exec/ioport.h"
   6#include "qom/object.h"
   7
   8#define TYPE_I8257 "i8257"
   9OBJECT_DECLARE_SIMPLE_TYPE(I8257State, I8257)
  10
  11typedef struct I8257Regs {
  12    int now[2];
  13    uint16_t base[2];
  14    uint8_t mode;
  15    uint8_t page;
  16    uint8_t pageh;
  17    uint8_t dack;
  18    uint8_t eop;
  19    IsaDmaTransferHandler transfer_handler;
  20    void *opaque;
  21} I8257Regs;
  22
  23struct I8257State {
  24    /* <private> */
  25    ISADevice parent_obj;
  26
  27    /* <public> */
  28    int32_t base;
  29    int32_t page_base;
  30    int32_t pageh_base;
  31    int32_t dshift;
  32
  33    uint8_t status;
  34    uint8_t command;
  35    uint8_t mask;
  36    uint8_t flip_flop;
  37    I8257Regs regs[4];
  38    MemoryRegion channel_io;
  39    MemoryRegion cont_io;
  40
  41    QEMUBH *dma_bh;
  42    bool dma_bh_scheduled;
  43    int running;
  44    PortioList portio_page;
  45    PortioList portio_pageh;
  46};
  47
  48void i8257_dma_init(ISABus *bus, bool high_page_enable);
  49
  50#endif
  51