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 
34 #include "dce80/irq_service_dce80.h"
35 
36 #include "dce120/irq_service_dce120.h"
37 
38 
39 #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
40 #include "dcn10/irq_service_dcn10.h"
41 #endif
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
78 const struct irq_source_info *find_irq_source_info(
79 	struct irq_service *irq_service,
80 	enum dc_irq_source source)
81 {
82 	if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
83 		return NULL;
84 
85 	return &irq_service->info[source];
86 }
87 
88 void dal_irq_service_set_generic(
89 	struct irq_service *irq_service,
90 	const struct irq_source_info *info,
91 	bool enable)
92 {
93 	uint32_t addr = info->enable_reg;
94 	uint32_t value = dm_read_reg(irq_service->ctx, addr);
95 
96 	value = (value & ~info->enable_mask) |
97 		(info->enable_value[enable ? 0 : 1] & info->enable_mask);
98 	dm_write_reg(irq_service->ctx, addr, value);
99 }
100 
101 bool dal_irq_service_set(
102 	struct irq_service *irq_service,
103 	enum dc_irq_source source,
104 	bool enable)
105 {
106 	const struct irq_source_info *info =
107 		find_irq_source_info(irq_service, source);
108 
109 	if (!info) {
110 		DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
111 			__func__,
112 			source);
113 		return false;
114 	}
115 
116 	dal_irq_service_ack(irq_service, source);
117 
118 	if (info->funcs->set)
119 		return info->funcs->set(irq_service, info, enable);
120 
121 	dal_irq_service_set_generic(irq_service, info, enable);
122 
123 	return true;
124 }
125 
126 void dal_irq_service_ack_generic(
127 	struct irq_service *irq_service,
128 	const struct irq_source_info *info)
129 {
130 	uint32_t addr = info->ack_reg;
131 	uint32_t value = dm_read_reg(irq_service->ctx, addr);
132 
133 	value = (value & ~info->ack_mask) |
134 		(info->ack_value & info->ack_mask);
135 	dm_write_reg(irq_service->ctx, addr, value);
136 }
137 
138 bool dal_irq_service_ack(
139 	struct irq_service *irq_service,
140 	enum dc_irq_source source)
141 {
142 	const struct irq_source_info *info =
143 		find_irq_source_info(irq_service, source);
144 
145 	if (!info) {
146 		DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
147 			__func__,
148 			source);
149 		return false;
150 	}
151 
152 	if (info->funcs->ack)
153 		return info->funcs->ack(irq_service, info);
154 
155 	dal_irq_service_ack_generic(irq_service, info);
156 
157 	return true;
158 }
159 
160 enum dc_irq_source dal_irq_service_to_irq_source(
161 		struct irq_service *irq_service,
162 		uint32_t src_id,
163 		uint32_t ext_id)
164 {
165 	return irq_service->funcs->to_dal_irq_source(
166 		irq_service,
167 		src_id,
168 		ext_id);
169 }
170