motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 01:33:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

i8259: Factor out base class for KVM reuse

Browse source 
Analogously to the APIC, we will reuse some parts of the user space
i8259 model for KVM. The base class provides a common device state, the
vmstate, the property list, a reset core and some shared init bits.

This also introduces a common helper to instantiate a single i8259 chip
from the cascade-creating i8259_init function.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This commit is contained in:
Jan Kiszka 2011-10-16 14:38:45 +02:00
parent 9aa78c425f
commit 512709f559
4 changed files with 254 additions and 129 deletions
Download patch file Download diff file Expand all files Collapse all files

76
hw/i8259_internal.h Normal file
View file

@ -0,0 +1,76 @@
/*
* QEMU 8259 - internal interfaces
*
* Copyright (c) 2011 Jan Kiszka, Siemens AG
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef QEMU_I8259_INTERNAL_H
#define QEMU_I8259_INTERNAL_H
#include "hw.h"
#include "pc.h"
#include "isa.h"
typedef struct PICCommonState PICCommonState;
struct PICCommonState {
ISADevice dev;
uint8_t last_irr; /* edge detection */
uint8_t irr; /* interrupt request register */
uint8_t imr; /* interrupt mask register */
uint8_t isr; /* interrupt service register */
uint8_t priority_add; /* highest irq priority */
uint8_t irq_base;
uint8_t read_reg_select;
uint8_t poll;
uint8_t special_mask;
uint8_t init_state;
uint8_t auto_eoi;
uint8_t rotate_on_auto_eoi;
uint8_t special_fully_nested_mode;
uint8_t init4; /* true if 4 byte init */
uint8_t single_mode; /* true if slave pic is not initialized */
uint8_t elcr; /* PIIX edge/trigger selection*/
uint8_t elcr_mask;
qemu_irq int_out[1];
uint32_t master; /* reflects /SP input pin */
uint32_t iobase;
uint32_t elcr_addr;
MemoryRegion base_io;
MemoryRegion elcr_io;
};
typedef struct PICCommonInfo PICCommonInfo;
struct PICCommonInfo {
ISADeviceInfo isadev;
void (*init)(PICCommonState *s);
void (*pre_save)(PICCommonState *s);
void (*post_load)(PICCommonState *s);
};
void pic_reset_common(PICCommonState *s);
ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master);
void pic_qdev_register(PICCommonInfo *info);
#endif /* !QEMU_I8259_INTERNAL_H */