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