1 /* 2 * Copyright 2012-15 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include <linux/slab.h> 27 28 #include "dm_services.h" 29 30 #include "include/irq_service_interface.h" 31 #include "include/logger_interface.h" 32 33 #include "dce110/irq_service_dce110.h" 34 35 36 #include "dce80/irq_service_dce80.h" 37 38 #include "dce120/irq_service_dce120.h" 39 40 41 #if defined(CONFIG_DRM_AMD_DC_DCN1_0) 42 #include "dcn10/irq_service_dcn10.h" 43 #endif 44 45 #include "reg_helper.h" 46 #include "irq_service.h" 47 48 49 50 #define CTX \ 51 irq_service->ctx 52 #define DC_LOGGER \ 53 irq_service->ctx->logger 54 55 void dal_irq_service_construct( 56 struct irq_service *irq_service, 57 struct irq_service_init_data *init_data) 58 { 59 if (!init_data || !init_data->ctx) { 60 BREAK_TO_DEBUGGER(); 61 return; 62 } 63 64 irq_service->ctx = init_data->ctx; 65 } 66 67 void dal_irq_service_destroy(struct irq_service **irq_service) 68 { 69 if (!irq_service || !*irq_service) { 70 BREAK_TO_DEBUGGER(); 71 return; 72 } 73 74 kfree(*irq_service); 75 76 *irq_service = NULL; 77 } 78 79 const struct irq_source_info *find_irq_source_info( 80 struct irq_service *irq_service, 81 enum dc_irq_source source) 82 { 83 if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID) 84 return NULL; 85 86 return &irq_service->info[source]; 87 } 88 89 void dal_irq_service_set_generic( 90 struct irq_service *irq_service, 91 const struct irq_source_info *info, 92 bool enable) 93 { 94 uint32_t addr = info->enable_reg; 95 uint32_t value = dm_read_reg(irq_service->ctx, addr); 96 97 value = (value & ~info->enable_mask) | 98 (info->enable_value[enable ? 0 : 1] & info->enable_mask); 99 dm_write_reg(irq_service->ctx, addr, value); 100 } 101 102 bool dal_irq_service_set( 103 struct irq_service *irq_service, 104 enum dc_irq_source source, 105 bool enable) 106 { 107 const struct irq_source_info *info = 108 find_irq_source_info(irq_service, source); 109 110 if (!info) { 111 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 112 __func__, 113 source); 114 return false; 115 } 116 117 dal_irq_service_ack(irq_service, source); 118 119 if (info->funcs->set) 120 return info->funcs->set(irq_service, info, enable); 121 122 dal_irq_service_set_generic(irq_service, info, enable); 123 124 return true; 125 } 126 127 void dal_irq_service_ack_generic( 128 struct irq_service *irq_service, 129 const struct irq_source_info *info) 130 { 131 uint32_t addr = info->ack_reg; 132 uint32_t value = dm_read_reg(irq_service->ctx, addr); 133 134 value = (value & ~info->ack_mask) | 135 (info->ack_value & info->ack_mask); 136 dm_write_reg(irq_service->ctx, addr, value); 137 } 138 139 bool dal_irq_service_ack( 140 struct irq_service *irq_service, 141 enum dc_irq_source source) 142 { 143 const struct irq_source_info *info = 144 find_irq_source_info(irq_service, source); 145 146 if (!info) { 147 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 148 __func__, 149 source); 150 return false; 151 } 152 153 if (info->funcs->ack) 154 return info->funcs->ack(irq_service, info); 155 156 dal_irq_service_ack_generic(irq_service, info); 157 158 return true; 159 } 160 161 enum dc_irq_source dal_irq_service_to_irq_source( 162 struct irq_service *irq_service, 163 uint32_t src_id, 164 uint32_t ext_id) 165 { 166 return irq_service->funcs->to_dal_irq_source( 167 irq_service, 168 src_id, 169 ext_id); 170 } 171