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 #if defined(CONFIG_DRM_AMD_DC_SI) 36 #include "dce60/irq_service_dce60.h" 37 #endif 38 39 #include "dce80/irq_service_dce80.h" 40 41 #include "dce120/irq_service_dce120.h" 42 43 44 #if defined(CONFIG_DRM_AMD_DC_DCN) 45 #include "dcn10/irq_service_dcn10.h" 46 #endif 47 48 #include "reg_helper.h" 49 #include "irq_service.h" 50 51 52 53 #define CTX \ 54 irq_service->ctx 55 #define DC_LOGGER \ 56 irq_service->ctx->logger 57 58 void dal_irq_service_construct( 59 struct irq_service *irq_service, 60 struct irq_service_init_data *init_data) 61 { 62 if (!init_data || !init_data->ctx) { 63 BREAK_TO_DEBUGGER(); 64 return; 65 } 66 67 irq_service->ctx = init_data->ctx; 68 } 69 70 void dal_irq_service_destroy(struct irq_service **irq_service) 71 { 72 if (!irq_service || !*irq_service) { 73 BREAK_TO_DEBUGGER(); 74 return; 75 } 76 77 kfree(*irq_service); 78 79 *irq_service = NULL; 80 } 81 82 static const struct irq_source_info *find_irq_source_info( 83 struct irq_service *irq_service, 84 enum dc_irq_source source) 85 { 86 if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID) 87 return NULL; 88 89 return &irq_service->info[source]; 90 } 91 92 void dal_irq_service_set_generic( 93 struct irq_service *irq_service, 94 const struct irq_source_info *info, 95 bool enable) 96 { 97 uint32_t addr = info->enable_reg; 98 uint32_t value = dm_read_reg(irq_service->ctx, addr); 99 100 value = (value & ~info->enable_mask) | 101 (info->enable_value[enable ? 0 : 1] & info->enable_mask); 102 dm_write_reg(irq_service->ctx, addr, value); 103 } 104 105 bool dal_irq_service_set( 106 struct irq_service *irq_service, 107 enum dc_irq_source source, 108 bool enable) 109 { 110 const struct irq_source_info *info = 111 find_irq_source_info(irq_service, source); 112 113 if (!info) { 114 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 115 __func__, 116 source); 117 return false; 118 } 119 120 dal_irq_service_ack(irq_service, source); 121 122 if (info->funcs && info->funcs->set) 123 return info->funcs->set(irq_service, info, enable); 124 125 dal_irq_service_set_generic(irq_service, info, enable); 126 127 return true; 128 } 129 130 void dal_irq_service_ack_generic( 131 struct irq_service *irq_service, 132 const struct irq_source_info *info) 133 { 134 uint32_t addr = info->ack_reg; 135 uint32_t value = dm_read_reg(irq_service->ctx, addr); 136 137 value = (value & ~info->ack_mask) | 138 (info->ack_value & info->ack_mask); 139 dm_write_reg(irq_service->ctx, addr, value); 140 } 141 142 bool dal_irq_service_ack( 143 struct irq_service *irq_service, 144 enum dc_irq_source source) 145 { 146 const struct irq_source_info *info = 147 find_irq_source_info(irq_service, source); 148 149 if (!info) { 150 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 151 __func__, 152 source); 153 return false; 154 } 155 156 if (info->funcs && info->funcs->ack) 157 return info->funcs->ack(irq_service, info); 158 159 dal_irq_service_ack_generic(irq_service, info); 160 161 return true; 162 } 163 164 enum dc_irq_source dal_irq_service_to_irq_source( 165 struct irq_service *irq_service, 166 uint32_t src_id, 167 uint32_t ext_id) 168 { 169 return irq_service->funcs->to_dal_irq_source( 170 irq_service, 171 src_id, 172 ext_id); 173 } 174