1 /* 2 * ARM GIC support 3 * 4 * Copyright (c) 2012 Linaro Limited 5 * Written by Peter Maydell 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation, either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 /* 22 * QEMU interface: 23 * + QOM property "num-cpu": number of CPUs to support 24 * + QOM property "num-irq": number of IRQs (including both SPIs and PPIs) 25 * + QOM property "revision": GIC version (1 or 2), or 0 for the 11MPCore GIC 26 * + QOM property "has-security-extensions": set true if the GIC should 27 * implement the security extensions 28 * + QOM property "has-virtualization-extensions": set true if the GIC should 29 * implement the virtualization extensions 30 * + unnamed GPIO inputs: (where P is number of SPIs, i.e. num-irq - 32) 31 * [0..P-1] SPIs 32 * [P..P+31] PPIs for CPU 0 33 * [P+32..P+63] PPIs for CPU 1 34 * ... 35 * + sysbus IRQs: (in order; number will vary depending on number of cores) 36 * - IRQ for CPU 0 37 * - IRQ for CPU 1 38 * ... 39 * - FIQ for CPU 0 40 * - FIQ for CPU 1 41 * ... 42 * - VIRQ for CPU 0 (exists even if virt extensions not present) 43 * - VIRQ for CPU 1 (exists even if virt extensions not present) 44 * ... 45 * - VFIQ for CPU 0 (exists even if virt extensions not present) 46 * - VFIQ for CPU 1 (exists even if virt extensions not present) 47 * ... 48 * - maintenance IRQ for CPU i/f 0 (only if virt extensions present) 49 * - maintenance IRQ for CPU i/f 1 (only if virt extensions present) 50 * + sysbus MMIO regions: (in order; numbers will vary depending on 51 * whether virtualization extensions are present and on number of cores) 52 * - distributor registers (GICD*) 53 * - CPU interface for the accessing core (GICC*) 54 * - virtual interface control registers (GICH*) (only if virt extns present) 55 * - virtual CPU interface for the accessing core (GICV*) (only if virt) 56 * - CPU 0 CPU interface registers 57 * - CPU 1 CPU interface registers 58 * ... 59 * - CPU 0 virtual interface control registers (only if virt extns present) 60 * - CPU 1 virtual interface control registers (only if virt extns present) 61 * ... 62 */ 63 64 #ifndef HW_ARM_GIC_H 65 #define HW_ARM_GIC_H 66 67 #include "arm_gic_common.h" 68 #include "qom/object.h" 69 70 /* Number of SGI target-list bits */ 71 #define GIC_TARGETLIST_BITS 8 72 #define GIC_MAX_PRIORITY_BITS 8 73 #define GIC_MIN_PRIORITY_BITS 4 74 75 #define TYPE_ARM_GIC "arm_gic" 76 typedef struct ARMGICClass ARMGICClass; 77 /* This is reusing the GICState typedef from TYPE_ARM_GIC_COMMON */ 78 DECLARE_OBJ_CHECKERS(GICState, ARMGICClass, 79 ARM_GIC, TYPE_ARM_GIC) 80 81 struct ARMGICClass { 82 /*< private >*/ 83 ARMGICCommonClass parent_class; 84 /*< public >*/ 85 86 DeviceRealize parent_realize; 87 }; 88 89 const char *gic_class_name(void); 90 91 #endif 92