1 /* 2 * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef __GIC_COMMON_H__ 32 #define __GIC_COMMON_H__ 33 34 /******************************************************************************* 35 * GIC Distributor interface general definitions 36 ******************************************************************************/ 37 /* Constants to categorise interrupts */ 38 #define MIN_SGI_ID 0 39 #define MIN_PPI_ID 16 40 #define MIN_SPI_ID 32 41 42 /* Mask for the priority field common to all GIC interfaces */ 43 #define GIC_PRI_MASK 0xff 44 45 /* Constant to indicate a spurious interrupt in all GIC versions */ 46 #define GIC_SPURIOUS_INTERRUPT 1023 47 48 /* Constants to categorise priorities */ 49 #define GIC_HIGHEST_SEC_PRIORITY 0 50 #define GIC_LOWEST_SEC_PRIORITY 127 51 #define GIC_HIGHEST_NS_PRIORITY 128 52 #define GIC_LOWEST_NS_PRIORITY 254 /* 255 would disable an interrupt */ 53 54 /******************************************************************************* 55 * GIC Distributor interface register offsets that are common to GICv3 & GICv2 56 ******************************************************************************/ 57 #define GICD_CTLR 0x0 58 #define GICD_TYPER 0x4 59 #define GICD_IIDR 0x8 60 #define GICD_IGROUPR 0x80 61 #define GICD_ISENABLER 0x100 62 #define GICD_ICENABLER 0x180 63 #define GICD_ISPENDR 0x200 64 #define GICD_ICPENDR 0x280 65 #define GICD_ISACTIVER 0x300 66 #define GICD_ICACTIVER 0x380 67 #define GICD_IPRIORITYR 0x400 68 #define GICD_ICFGR 0xc00 69 #define GICD_NSACR 0xe00 70 71 /* GICD_CTLR bit definitions */ 72 #define CTLR_ENABLE_G0_SHIFT 0 73 #define CTLR_ENABLE_G0_MASK 0x1 74 #define CTLR_ENABLE_G0_BIT (1 << CTLR_ENABLE_G0_SHIFT) 75 76 77 /******************************************************************************* 78 * GIC Distributor interface register constants that are common to GICv3 & GICv2 79 ******************************************************************************/ 80 #define PIDR2_ARCH_REV_SHIFT 4 81 #define PIDR2_ARCH_REV_MASK 0xf 82 83 /* GICv3 revision as reported by the PIDR2 register */ 84 #define ARCH_REV_GICV3 0x3 85 /* GICv2 revision as reported by the PIDR2 register */ 86 #define ARCH_REV_GICV2 0x2 87 88 #define IGROUPR_SHIFT 5 89 #define ISENABLER_SHIFT 5 90 #define ICENABLER_SHIFT ISENABLER_SHIFT 91 #define ISPENDR_SHIFT 5 92 #define ICPENDR_SHIFT ISPENDR_SHIFT 93 #define ISACTIVER_SHIFT 5 94 #define ICACTIVER_SHIFT ISACTIVER_SHIFT 95 #define IPRIORITYR_SHIFT 2 96 #define ICFGR_SHIFT 4 97 #define NSACR_SHIFT 4 98 99 /* GICD_TYPER shifts and masks */ 100 #define TYPER_IT_LINES_NO_SHIFT 0 101 #define TYPER_IT_LINES_NO_MASK 0x1f 102 103 /* Value used to initialize Normal world interrupt priorities four at a time */ 104 #define GICD_IPRIORITYR_DEF_VAL \ 105 (GIC_HIGHEST_NS_PRIORITY | \ 106 (GIC_HIGHEST_NS_PRIORITY << 8) | \ 107 (GIC_HIGHEST_NS_PRIORITY << 16) | \ 108 (GIC_HIGHEST_NS_PRIORITY << 24)) 109 110 #endif /* __GIC_COMMON_H__ */ 111