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 */ 84