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 "dm_services.h"
27 
28 #include "include/irq_service_interface.h"
29 #include "include/logger_interface.h"
30 
31 #include "dce110/irq_service_dce110.h"
32 
33 #if defined(CONFIG_DRM_AMD_DC_SI)
34 #include "dce60/irq_service_dce60.h"
35 #endif
36 
37 #include "dce80/irq_service_dce80.h"
38 #include "dce120/irq_service_dce120.h"
39 #include "dcn10/irq_service_dcn10.h"
40 
41 #include "reg_helper.h"
42 #include "irq_service.h"
43 
44 
45 
46 #define CTX \
47 		irq_service->ctx
48 #define DC_LOGGER \
49 	irq_service->ctx->logger
50 
51 void dal_irq_service_construct(
52 	struct irq_service *irq_service,
53 	struct irq_service_init_data *init_data)
54 {
55 	if (!init_data || !init_data->ctx) {
56 		BREAK_TO_DEBUGGER();
57 		return;
58 	}
59 
60 	irq_service->ctx = init_data->ctx;
61 }
62 
63 void dal_irq_service_destroy(struct irq_service **irq_service)
64 {
65 	if (!irq_service || !*irq_service) {
66 		BREAK_TO_DEBUGGER();
67 		return;
68 	}
69 
70 	kfree(*irq_service);
71 
72 	*irq_service = NULL;
73 }
74 
75 static const struct irq_source_info *find_irq_source_info(
76 	struct irq_service *irq_service,
77 	enum dc_irq_source source)
78 {
79 	if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
80 		return NULL;
81 
82 	return &irq_service->info[source];
83 }
84 
85 void dal_irq_service_set_generic(
86 	struct irq_service *irq_service,
87 	const struct irq_source_info *info,
88 	bool enable)
89 {
90 	uint32_t addr = info->enable_reg;
91 	uint32_t value = dm_read_reg(irq_service->ctx, addr);
92 
93 	value = (value & ~info->enable_mask) |
94 		(info->enable_value[enable ? 0 : 1] & info->enable_mask);
95 	dm_write_reg(irq_service->ctx, addr, value);
96 }
97 
98 bool dal_irq_service_set(
99 	struct irq_service *irq_service,
100 	enum dc_irq_source source,
101 	bool enable)
102 {
103 	const struct irq_source_info *info =
104 		find_irq_source_info(irq_service, source);
105 
106 	if (!info) {
107 		DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
108 			__func__,
109 			source);
110 		return false;
111 	}
112 
113 	dal_irq_service_ack(irq_service, source);
114 
115 	if (info->funcs && info->funcs->set) {
116 		if (info->funcs->set == dal_irq_service_dummy_set) {
117 			DC_LOG_WARNING("%s: src: %d, st: %d\n", __func__,
118 				       source, enable);
119 			ASSERT(0);
120 		}
121 
122 		return info->funcs->set(irq_service, info, enable);
123 	}
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 		if (info->funcs->ack == dal_irq_service_dummy_ack) {
158 			DC_LOG_WARNING("%s: src: %d\n", __func__, source);
159 			ASSERT(0);
160 		}
161 
162 		return info->funcs->ack(irq_service, info);
163 	}
164 
165 	dal_irq_service_ack_generic(irq_service, info);
166 
167 	return true;
168 }
169 
170 enum dc_irq_source dal_irq_service_to_irq_source(
171 		struct irq_service *irq_service,
172 		uint32_t src_id,
173 		uint32_t ext_id)
174 {
175 	return irq_service->funcs->to_dal_irq_source(
176 		irq_service,
177 		src_id,
178 		ext_id);
179 }
180