1 /* 2 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef __GICV2_H__ 8 #define __GICV2_H__ 9 10 /******************************************************************************* 11 * GICv2 miscellaneous definitions 12 ******************************************************************************/ 13 14 /* Interrupt group definitions */ 15 #define GICV2_INTR_GROUP0 0 16 #define GICV2_INTR_GROUP1 1 17 18 /* Interrupt IDs reported by the HPPIR and IAR registers */ 19 #define PENDING_G1_INTID 1022 20 21 /* GICv2 can only target up to 8 PEs */ 22 #define GICV2_MAX_TARGET_PE 8 23 24 /******************************************************************************* 25 * GICv2 specific Distributor interface register offsets and constants. 26 ******************************************************************************/ 27 #define GICD_ITARGETSR 0x800 28 #define GICD_SGIR 0xF00 29 #define GICD_CPENDSGIR 0xF10 30 #define GICD_SPENDSGIR 0xF20 31 #define GICD_PIDR2_GICV2 0xFE8 32 33 #define ITARGETSR_SHIFT 2 34 #define GIC_TARGET_CPU_MASK 0xff 35 36 #define CPENDSGIR_SHIFT 2 37 #define SPENDSGIR_SHIFT CPENDSGIR_SHIFT 38 39 #define SGIR_TGTLSTFLT_SHIFT 24 40 #define SGIR_TGTLSTFLT_MASK 0x3 41 #define SGIR_TGTLST_SHIFT 16 42 #define SGIR_TGTLST_MASK 0xff 43 #define SGIR_INTID_MASK 0xf 44 45 #define SGIR_TGT_SPECIFIC 0 46 47 #define GICV2_SGIR_VALUE(tgt_lst_flt, tgt, intid) \ 48 ((((tgt_lst_flt) & SGIR_TGTLSTFLT_MASK) << SGIR_TGTLSTFLT_SHIFT) | \ 49 (((tgt) & SGIR_TGTLST_MASK) << SGIR_TGTLST_SHIFT) | \ 50 ((intid) & SGIR_INTID_MASK)) 51 52 /******************************************************************************* 53 * GICv2 specific CPU interface register offsets and constants. 54 ******************************************************************************/ 55 /* Physical CPU Interface registers */ 56 #define GICC_CTLR 0x0 57 #define GICC_PMR 0x4 58 #define GICC_BPR 0x8 59 #define GICC_IAR 0xC 60 #define GICC_EOIR 0x10 61 #define GICC_RPR 0x14 62 #define GICC_HPPIR 0x18 63 #define GICC_AHPPIR 0x28 64 #define GICC_IIDR 0xFC 65 #define GICC_DIR 0x1000 66 #define GICC_PRIODROP GICC_EOIR 67 68 /* GICC_CTLR bit definitions */ 69 #define EOI_MODE_NS (1 << 10) 70 #define EOI_MODE_S (1 << 9) 71 #define IRQ_BYP_DIS_GRP1 (1 << 8) 72 #define FIQ_BYP_DIS_GRP1 (1 << 7) 73 #define IRQ_BYP_DIS_GRP0 (1 << 6) 74 #define FIQ_BYP_DIS_GRP0 (1 << 5) 75 #define CBPR (1 << 4) 76 #define FIQ_EN_SHIFT 3 77 #define FIQ_EN_BIT (1 << FIQ_EN_SHIFT) 78 #define ACK_CTL (1 << 2) 79 80 /* GICC_IIDR bit masks and shifts */ 81 #define GICC_IIDR_PID_SHIFT 20 82 #define GICC_IIDR_ARCH_SHIFT 16 83 #define GICC_IIDR_REV_SHIFT 12 84 #define GICC_IIDR_IMP_SHIFT 0 85 86 #define GICC_IIDR_PID_MASK 0xfff 87 #define GICC_IIDR_ARCH_MASK 0xf 88 #define GICC_IIDR_REV_MASK 0xf 89 #define GICC_IIDR_IMP_MASK 0xfff 90 91 /* HYP view virtual CPU Interface registers */ 92 #define GICH_CTL 0x0 93 #define GICH_VTR 0x4 94 #define GICH_ELRSR0 0x30 95 #define GICH_ELRSR1 0x34 96 #define GICH_APR0 0xF0 97 #define GICH_LR_BASE 0x100 98 99 /* Virtual CPU Interface registers */ 100 #define GICV_CTL 0x0 101 #define GICV_PRIMASK 0x4 102 #define GICV_BP 0x8 103 #define GICV_INTACK 0xC 104 #define GICV_EOI 0x10 105 #define GICV_RUNNINGPRI 0x14 106 #define GICV_HIGHESTPEND 0x18 107 #define GICV_DEACTIVATE 0x1000 108 109 /* GICD_CTLR bit definitions */ 110 #define CTLR_ENABLE_G1_SHIFT 1 111 #define CTLR_ENABLE_G1_MASK 0x1 112 #define CTLR_ENABLE_G1_BIT (1 << CTLR_ENABLE_G1_SHIFT) 113 114 /* Interrupt ID mask for HPPIR, AHPPIR, IAR and AIAR CPU Interface registers */ 115 #define INT_ID_MASK 0x3ff 116 117 #ifndef __ASSEMBLY__ 118 119 #include <interrupt_props.h> 120 #include <stdint.h> 121 122 /******************************************************************************* 123 * This structure describes some of the implementation defined attributes of 124 * the GICv2 IP. It is used by the platform port to specify these attributes 125 * in order to initialize the GICv2 driver. The attributes are described 126 * below. 127 * 128 * The 'gicd_base' field contains the base address of the Distributor interface 129 * programmer's view. 130 * 131 * The 'gicc_base' field contains the base address of the CPU Interface 132 * programmer's view. 133 * 134 * The 'g0_interrupt_array' field is a pointer to an array in which each entry 135 * corresponds to an ID of a Group 0 interrupt. This field is ignored when 136 * 'interrupt_props' field is used. This field is deprecated. 137 * 138 * The 'g0_interrupt_num' field contains the number of entries in the 139 * 'g0_interrupt_array'. This field is ignored when 'interrupt_props' field is 140 * used. This field is deprecated. 141 * 142 * The 'target_masks' is a pointer to an array containing 'target_masks_num' 143 * elements. The GIC driver will populate the array with per-PE target mask to 144 * use to when targeting interrupts. 145 * 146 * The 'interrupt_props' field is a pointer to an array that enumerates secure 147 * interrupts and their properties. If this field is not NULL, both 148 * 'g0_interrupt_array' and 'g1s_interrupt_array' fields are ignored. 149 * 150 * The 'interrupt_props_num' field contains the number of entries in the 151 * 'interrupt_props' array. If this field is non-zero, 'g0_interrupt_num' is 152 * ignored. 153 ******************************************************************************/ 154 typedef struct gicv2_driver_data { 155 uintptr_t gicd_base; 156 uintptr_t gicc_base; 157 #if !ERROR_DEPRECATED 158 unsigned int g0_interrupt_num; 159 const unsigned int *g0_interrupt_array; 160 #endif 161 unsigned int *target_masks; 162 unsigned int target_masks_num; 163 const interrupt_prop_t *interrupt_props; 164 unsigned int interrupt_props_num; 165 } gicv2_driver_data_t; 166 167 /******************************************************************************* 168 * Function prototypes 169 ******************************************************************************/ 170 void gicv2_driver_init(const gicv2_driver_data_t *plat_driver_data); 171 void gicv2_distif_init(void); 172 void gicv2_pcpu_distif_init(void); 173 void gicv2_cpuif_enable(void); 174 void gicv2_cpuif_disable(void); 175 unsigned int gicv2_is_fiq_enabled(void); 176 unsigned int gicv2_get_pending_interrupt_type(void); 177 unsigned int gicv2_get_pending_interrupt_id(void); 178 unsigned int gicv2_acknowledge_interrupt(void); 179 void gicv2_end_of_interrupt(unsigned int id); 180 unsigned int gicv2_get_interrupt_group(unsigned int id); 181 unsigned int gicv2_get_running_priority(void); 182 void gicv2_set_pe_target_mask(unsigned int proc_num); 183 unsigned int gicv2_get_interrupt_active(unsigned int id); 184 void gicv2_enable_interrupt(unsigned int id); 185 void gicv2_disable_interrupt(unsigned int id); 186 void gicv2_set_interrupt_priority(unsigned int id, unsigned int priority); 187 void gicv2_set_interrupt_type(unsigned int id, unsigned int type); 188 void gicv2_raise_sgi(int sgi_num, int proc_num); 189 void gicv2_set_spi_routing(unsigned int id, int proc_num); 190 void gicv2_set_interrupt_pending(unsigned int id); 191 void gicv2_clear_interrupt_pending(unsigned int id); 192 unsigned int gicv2_set_pmr(unsigned int mask); 193 194 #endif /* __ASSEMBLY__ */ 195 #endif /* __GICV2_H__ */ 196