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
36 #include "dce80/irq_service_dce80.h"
37
38 #include "dce120/irq_service_dce120.h"
39
40
41 #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
42 #include "dcn10/irq_service_dcn10.h"
43 #endif
44
45 #include "reg_helper.h"
46 #include "irq_service.h"
47
48
49
50 #define CTX \
51 irq_service->ctx
52 #define DC_LOGGER \
53 irq_service->ctx->logger
54
dal_irq_service_construct(struct irq_service * irq_service,struct irq_service_init_data * init_data)55 void dal_irq_service_construct(
56 struct irq_service *irq_service,
57 struct irq_service_init_data *init_data)
58 {
59 if (!init_data || !init_data->ctx) {
60 BREAK_TO_DEBUGGER();
61 return;
62 }
63
64 irq_service->ctx = init_data->ctx;
65 }
66
dal_irq_service_destroy(struct irq_service ** irq_service)67 void dal_irq_service_destroy(struct irq_service **irq_service)
68 {
69 if (!irq_service || !*irq_service) {
70 BREAK_TO_DEBUGGER();
71 return;
72 }
73
74 kfree(*irq_service);
75
76 *irq_service = NULL;
77 }
78
find_irq_source_info(struct irq_service * irq_service,enum dc_irq_source source)79 const struct irq_source_info *find_irq_source_info(
80 struct irq_service *irq_service,
81 enum dc_irq_source source)
82 {
83 if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
84 return NULL;
85
86 return &irq_service->info[source];
87 }
88
dal_irq_service_set_generic(struct irq_service * irq_service,const struct irq_source_info * info,bool enable)89 void dal_irq_service_set_generic(
90 struct irq_service *irq_service,
91 const struct irq_source_info *info,
92 bool enable)
93 {
94 uint32_t addr = info->enable_reg;
95 uint32_t value = dm_read_reg(irq_service->ctx, addr);
96
97 value = (value & ~info->enable_mask) |
98 (info->enable_value[enable ? 0 : 1] & info->enable_mask);
99 dm_write_reg(irq_service->ctx, addr, value);
100 }
101
dal_irq_service_set(struct irq_service * irq_service,enum dc_irq_source source,bool enable)102 bool dal_irq_service_set(
103 struct irq_service *irq_service,
104 enum dc_irq_source source,
105 bool enable)
106 {
107 const struct irq_source_info *info =
108 find_irq_source_info(irq_service, source);
109
110 if (!info) {
111 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
112 __func__,
113 source);
114 return false;
115 }
116
117 dal_irq_service_ack(irq_service, source);
118
119 if (info->funcs->set)
120 return info->funcs->set(irq_service, info, enable);
121
122 dal_irq_service_set_generic(irq_service, info, enable);
123
124 return true;
125 }
126
dal_irq_service_ack_generic(struct irq_service * irq_service,const struct irq_source_info * info)127 void dal_irq_service_ack_generic(
128 struct irq_service *irq_service,
129 const struct irq_source_info *info)
130 {
131 uint32_t addr = info->ack_reg;
132 uint32_t value = dm_read_reg(irq_service->ctx, addr);
133
134 value = (value & ~info->ack_mask) |
135 (info->ack_value & info->ack_mask);
136 dm_write_reg(irq_service->ctx, addr, value);
137 }
138
dal_irq_service_ack(struct irq_service * irq_service,enum dc_irq_source source)139 bool dal_irq_service_ack(
140 struct irq_service *irq_service,
141 enum dc_irq_source source)
142 {
143 const struct irq_source_info *info =
144 find_irq_source_info(irq_service, source);
145
146 if (!info) {
147 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
148 __func__,
149 source);
150 return false;
151 }
152
153 if (info->funcs->ack)
154 return info->funcs->ack(irq_service, info);
155
156 dal_irq_service_ack_generic(irq_service, info);
157
158 return true;
159 }
160
dal_irq_service_to_irq_source(struct irq_service * irq_service,uint32_t src_id,uint32_t ext_id)161 enum dc_irq_source dal_irq_service_to_irq_source(
162 struct irq_service *irq_service,
163 uint32_t src_id,
164 uint32_t ext_id)
165 {
166 return irq_service->funcs->to_dal_irq_source(
167 irq_service,
168 src_id,
169 ext_id);
170 }
171
