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/isa/isa.h" 29 #include "hw/intc/intc.h" 30 #include "hw/intc/i8259.h" 31 #include "qom/object.h" 32 33 34 #define TYPE_PIC_COMMON "pic-common" 35 OBJECT_DECLARE_TYPE(PICCommonState, PICCommonClass, PIC_COMMON) 36 37 struct PICCommonClass { 38 ISADeviceClass parent_class; 39 40 void (*pre_save)(PICCommonState *s); 41 void (*post_load)(PICCommonState *s); 42 }; 43 44 struct PICCommonState { 45 ISADevice parent_obj; 46 47 uint8_t last_irr; /* edge detection */ 48 uint8_t irr; /* interrupt request register */ 49 uint8_t imr; /* interrupt mask register */ 50 uint8_t isr; /* interrupt service register */ 51 uint8_t priority_add; /* highest irq priority */ 52 uint8_t irq_base; 53 uint8_t read_reg_select; 54 uint8_t poll; 55 uint8_t special_mask; 56 uint8_t init_state; 57 uint8_t auto_eoi; 58 uint8_t rotate_on_auto_eoi; 59 uint8_t special_fully_nested_mode; 60 uint8_t init4; /* true if 4 byte init */ 61 uint8_t single_mode; /* true if slave pic is not initialized */ 62 uint8_t elcr; /* PIIX edge/trigger selection*/ 63 uint8_t elcr_mask; 64 qemu_irq int_out[1]; 65 uint32_t master; /* reflects /SP input pin */ 66 uint32_t iobase; 67 uint32_t elcr_addr; 68 MemoryRegion base_io; 69 MemoryRegion elcr_io; 70 }; 71 72 void pic_reset_common(PICCommonState *s); 73 ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master); 74 void pic_stat_update_irq(int irq, int level); 75 76 #endif /* QEMU_I8259_INTERNAL_H */ 77