LXR qemu/hw/i8259

   1/*
   2 * QEMU 8259 - internal interfaces
   3 *
   4 * Copyright (c) 2011 Jan Kiszka, Siemens AG
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#ifndef QEMU_I8259_INTERNAL_H
  26#define QEMU_I8259_INTERNAL_H
  27
  28#include "hw.h"
  29#include "pc.h"
  30#include "isa.h"
  31
  32typedef struct PICCommonState PICCommonState;
  33
  34#define TYPE_PIC_COMMON "pic-common"
  35#define PIC_COMMON(obj) \
  36     OBJECT_CHECK(PICCommonState, (obj), TYPE_PIC_COMMON)
  37#define PIC_COMMON_CLASS(klass) \
  38     OBJECT_CLASS_CHECK(PICCommonClass, (klass), TYPE_PIC_COMMON)
  39#define PIC_COMMON_GET_CLASS(obj) \
  40     OBJECT_GET_CLASS(PICCommonClass, (obj), TYPE_PIC_COMMON)
  41
  42typedef struct PICCommonClass
  43{
  44    ISADeviceClass parent_class;
  45    void (*init)(PICCommonState *s);
  46    void (*pre_save)(PICCommonState *s);
  47    void (*post_load)(PICCommonState *s);
  48} PICCommonClass;
  49
  50struct PICCommonState {
  51    ISADevice dev;
  52    uint8_t last_irr; /* edge detection */
  53    uint8_t irr; /* interrupt request register */
  54    uint8_t imr; /* interrupt mask register */
  55    uint8_t isr; /* interrupt service register */
  56    uint8_t priority_add; /* highest irq priority */
  57    uint8_t irq_base;
  58    uint8_t read_reg_select;
  59    uint8_t poll;
  60    uint8_t special_mask;
  61    uint8_t init_state;
  62    uint8_t auto_eoi;
  63    uint8_t rotate_on_auto_eoi;
  64    uint8_t special_fully_nested_mode;
  65    uint8_t init4; /* true if 4 byte init */
  66    uint8_t single_mode; /* true if slave pic is not initialized */
  67    uint8_t elcr; /* PIIX edge/trigger selection*/
  68    uint8_t elcr_mask;
  69    qemu_irq int_out[1];
  70    uint32_t master; /* reflects /SP input pin */
  71    uint32_t iobase;
  72    uint32_t elcr_addr;
  73    MemoryRegion base_io;
  74    MemoryRegion elcr_io;
  75};
  76
  77void pic_reset_common(PICCommonState *s);
  78
  79ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master);
  80
  81
  82#endif /* !QEMU_I8259_INTERNAL_H */
  83