dc/irq/irq_service.c

0001 /*
0002  * Copyright 2012-15 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: AMD
0023  *
0024  */
0025
0026 #include "dm_services.h"
0027
0028 #include "include/irq_service_interface.h"
0029 #include "include/logger_interface.h"
0030
0031 #include "dce110/irq_service_dce110.h"
0032
0033 #if defined(CONFIG_DRM_AMD_DC_SI)
0034 #include "dce60/irq_service_dce60.h"
0035 #endif
0036
0037 #include "dce80/irq_service_dce80.h"
0038 #include "dce120/irq_service_dce120.h"
0039 #include "dcn10/irq_service_dcn10.h"
0040
0041 #include "reg_helper.h"
0042 #include "irq_service.h"
0043
0044
0045
0046 #define CTX \
0047         irq_service->ctx
0048 #define DC_LOGGER \
0049     irq_service->ctx->logger
0050
0051 void dal_irq_service_construct(
0052     struct irq_service *irq_service,
0053     struct irq_service_init_data *init_data)
0054 {
0055     if (!init_data || !init_data->ctx) {
0056         BREAK_TO_DEBUGGER();
0057         return;
0058     }
0059
0060     irq_service->ctx = init_data->ctx;
0061 }
0062
0063 void dal_irq_service_destroy(struct irq_service **irq_service)
0064 {
0065     if (!irq_service || !*irq_service) {
0066         BREAK_TO_DEBUGGER();
0067         return;
0068     }
0069
0070     kfree(*irq_service);
0071
0072     *irq_service = NULL;
0073 }
0074
0075 static const struct irq_source_info *find_irq_source_info(
0076     struct irq_service *irq_service,
0077     enum dc_irq_source source)
0078 {
0079     if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
0080         return NULL;
0081
0082     return &irq_service->info[source];
0083 }
0084
0085 void dal_irq_service_set_generic(
0086     struct irq_service *irq_service,
0087     const struct irq_source_info *info,
0088     bool enable)
0089 {
0090     uint32_t addr = info->enable_reg;
0091     uint32_t value = dm_read_reg(irq_service->ctx, addr);
0092
0093     value = (value & ~info->enable_mask) |
0094         (info->enable_value[enable ? 0 : 1] & info->enable_mask);
0095     dm_write_reg(irq_service->ctx, addr, value);
0096 }
0097
0098 bool dal_irq_service_set(
0099     struct irq_service *irq_service,
0100     enum dc_irq_source source,
0101     bool enable)
0102 {
0103     const struct irq_source_info *info =
0104         find_irq_source_info(irq_service, source);
0105
0106     if (!info) {
0107         DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
0108             __func__,
0109             source);
0110         return false;
0111     }
0112
0113     dal_irq_service_ack(irq_service, source);
0114
0115     if (info->funcs && info->funcs->set)
0116         return info->funcs->set(irq_service, info, enable);
0117
0118     dal_irq_service_set_generic(irq_service, info, enable);
0119
0120     return true;
0121 }
0122
0123 void dal_irq_service_ack_generic(
0124     struct irq_service *irq_service,
0125     const struct irq_source_info *info)
0126 {
0127     uint32_t addr = info->ack_reg;
0128     uint32_t value = dm_read_reg(irq_service->ctx, addr);
0129
0130     value = (value & ~info->ack_mask) |
0131         (info->ack_value & info->ack_mask);
0132     dm_write_reg(irq_service->ctx, addr, value);
0133 }
0134
0135 bool dal_irq_service_ack(
0136     struct irq_service *irq_service,
0137     enum dc_irq_source source)
0138 {
0139     const struct irq_source_info *info =
0140         find_irq_source_info(irq_service, source);
0141
0142     if (!info) {
0143         DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
0144             __func__,
0145             source);
0146         return false;
0147     }
0148
0149     if (info->funcs && info->funcs->ack)
0150         return info->funcs->ack(irq_service, info);
0151
0152     dal_irq_service_ack_generic(irq_service, info);
0153
0154     return true;
0155 }
0156
0157 enum dc_irq_source dal_irq_service_to_irq_source(
0158         struct irq_service *irq_service,
0159         uint32_t src_id,
0160         uint32_t ext_id)
0161 {
0162     return irq_service->funcs->to_dal_irq_source(
0163         irq_service,
0164         src_id,
0165         ext_id);
0166 }