From 512709f559dce1690fa89fe2a67a8e1984cd3895 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Sun, 16 Oct 2011 14:38:45 +0200 Subject: i8259: Factor out base class for KVM reuse 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 --- hw/i8259_internal.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 hw/i8259_internal.h (limited to 'hw/i8259_internal.h') diff --git a/hw/i8259_internal.h b/hw/i8259_internal.h new file mode 100644 index 000000000..13deb14b6 --- /dev/null +++ b/hw/i8259_internal.h @@ -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 */ -- cgit v1.2.3