1 /* 2 * "Universal" Interrupt Controller for PowerPPC 4xx embedded processors 3 * 4 * Copyright (c) 2007 Jocelyn Mayer 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 HW_INTC_PPC_UIC_H 26 #define HW_INTC_PPC_UIC_H 27 28 #include "hw/sysbus.h" 29 #include "qom/object.h" 30 31 #define TYPE_PPC_UIC "ppc-uic" 32 OBJECT_DECLARE_SIMPLE_TYPE(PPCUIC, PPC_UIC) 33 34 /* 35 * QEMU interface: 36 * QOM property "cpu": link to the PPC CPU 37 * (no default, must be set) 38 * QOM property "dcr-base": base of the bank of DCR registers for the UIC 39 * (default 0x30) 40 * QOM property "use-vectors": true if the UIC has vector registers 41 * (default true) 42 * unnamed GPIO inputs 0..UIC_MAX_IRQ: input IRQ lines 43 * sysbus IRQs: 44 * 0 (PPCUIC_OUTPUT_INT): output INT line to the CPU 45 * 1 (PPCUIC_OUTPUT_CINT): output CINT line to the CPU 46 */ 47 48 #define UIC_MAX_IRQ 32 49 50 /* Symbolic constants for the sysbus IRQ outputs */ 51 enum { 52 PPCUIC_OUTPUT_INT = 0, 53 PPCUIC_OUTPUT_CINT = 1, 54 PPCUIC_OUTPUT_NB, 55 }; 56 57 struct PPCUIC { 58 /*< private >*/ 59 SysBusDevice parent_obj; 60 61 /*< public >*/ 62 qemu_irq output_int; 63 qemu_irq output_cint; 64 65 /* properties */ 66 CPUState *cpu; 67 uint32_t dcr_base; 68 bool use_vectors; 69 70 uint32_t level; /* Remembers the state of level-triggered interrupts. */ 71 uint32_t uicsr; /* Status register */ 72 uint32_t uicer; /* Enable register */ 73 uint32_t uiccr; /* Critical register */ 74 uint32_t uicpr; /* Polarity register */ 75 uint32_t uictr; /* Triggering register */ 76 uint32_t uicvcr; /* Vector configuration register */ 77 uint32_t uicvr; 78 }; 79 80 #endif 81