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
dal_irq_service_construct(struct irq_service * irq_service,struct irq_service_init_data * init_data)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
dal_irq_service_destroy(struct irq_service ** irq_service)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
find_irq_source_info(struct irq_service * irq_service,enum dc_irq_source source)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
dal_irq_service_set_generic(struct irq_service * irq_service,const struct irq_source_info * info,bool enable)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
dal_irq_service_set(struct irq_service * irq_service,enum dc_irq_source source,bool enable)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
dal_irq_service_ack_generic(struct irq_service * irq_service,const struct irq_source_info * info)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
dal_irq_service_ack(struct irq_service * irq_service,enum dc_irq_source source)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
dal_irq_service_to_irq_source(struct irq_service * irq_service,uint32_t src_id,uint32_t ext_id)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