include/hw/isa/i8259_internal.h

   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/hw.h"
  29 #include "hw/i386/pc.h"
  30 #include "hw/isa/isa.h"
  31
  32 typedef 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
  42 typedef struct PICCommonClass
  43 {
  44     ISADeviceClass parent_class;
  45
  46     void (*pre_save)(PICCommonState *s);
  47     void (*post_load)(PICCommonState *s);
  48 } PICCommonClass;
  49
  50 struct PICCommonState {
  51     ISADevice parent_obj;
  52
  53     uint8_t last_irr; /* edge detection */
  54     uint8_t irr; /* interrupt request register */
  55     uint8_t imr; /* interrupt mask register */
  56     uint8_t isr; /* interrupt service register */
  57     uint8_t priority_add; /* highest irq priority */
  58     uint8_t irq_base;
  59     uint8_t read_reg_select;
  60     uint8_t poll;
  61     uint8_t special_mask;
  62     uint8_t init_state;
  63     uint8_t auto_eoi;
  64     uint8_t rotate_on_auto_eoi;
  65     uint8_t special_fully_nested_mode;
  66     uint8_t init4; /* true if 4 byte init */
  67     uint8_t single_mode; /* true if slave pic is not initialized */
  68     uint8_t elcr; /* PIIX edge/trigger selection*/
  69     uint8_t elcr_mask;
  70     qemu_irq int_out[1];
  71     uint32_t master; /* reflects /SP input pin */
  72     uint32_t iobase;
  73     uint32_t elcr_addr;
  74     MemoryRegion base_io;
  75     MemoryRegion elcr_io;
  76 };
  77
  78 void pic_reset_common(PICCommonState *s);
  79
  80 ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master);
  81
  82
  83 #endif /* QEMU_I8259_INTERNAL_H */