1 /* 2 * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <string.h> 9 10 #include <bl31/interrupt_mgmt.h> 11 #include <plat/common/platform.h> 12 #include <platform_def.h> 13 14 #include <sgi_ras.h> 15 16 static struct plat_sgi_ras_config *sgi_ras_config; 17 18 /* 19 * Find event map for a given interrupt number. On success, returns pointer to 20 * the event map. On error, returns NULL. 21 */ 22 struct sgi_ras_ev_map *sgi_find_ras_event_map_by_intr(uint32_t intr_num) 23 { 24 struct sgi_ras_ev_map *map; 25 int size; 26 int i; 27 28 if (sgi_ras_config == NULL) { 29 ERROR("RAS config is NULL\n"); 30 return NULL; 31 } 32 33 map = sgi_ras_config->ev_map; 34 size = sgi_ras_config->ev_map_size; 35 36 for (i = 0; i < size; i++) { 37 if (map->intr == intr_num) 38 return map; 39 40 map++; 41 } 42 43 return NULL; 44 } 45 46 /* 47 * Programs GIC registers and configures interrupt ID's as Group0 EL3 48 * interrupts. Current support is to register PPI and SPI interrupts. 49 */ 50 static void sgi_ras_intr_configure(int intr, int intr_type) 51 { 52 plat_ic_set_interrupt_type(intr, INTR_TYPE_EL3); 53 plat_ic_set_interrupt_priority(intr, PLAT_RAS_PRI); 54 plat_ic_clear_interrupt_pending(intr); 55 56 /* Routing mode option available only for SPI interrupts */ 57 if (intr_type == SGI_RAS_INTR_TYPE_SPI) { 58 plat_ic_set_spi_routing(intr, INTR_ROUTING_MODE_ANY, 59 (u_register_t)read_mpidr_el1()); 60 } 61 plat_ic_enable_interrupt(intr); 62 } 63 64 /* 65 * Initialization function for the framework. 66 * 67 * Registers RAS config provided by the platform and then configures and 68 * enables interrupt for each registered error. On success, return 0. 69 */ 70 int sgi_ras_platform_setup(struct plat_sgi_ras_config *config) 71 { 72 struct sgi_ras_ev_map *map; 73 int size; 74 int i; 75 76 /* Check if parameter is valid. */ 77 if (config == NULL) { 78 ERROR("SGI: Failed to register RAS config\n"); 79 return -1; 80 } 81 82 /* 83 * Maintain a reference to the platform RAS config data for later 84 * use. 85 */ 86 sgi_ras_config = config; 87 88 map = sgi_ras_config->ev_map; 89 size = sgi_ras_config->ev_map_size; 90 91 for (i = 0; i < size; i++) { 92 sgi_ras_intr_configure(map->intr, map->intr_type); 93 map++; 94 } 95 96 INFO("SGI: Platform RAS setup successful\n"); 97 98 return 0; 99 } 100