1 /* $NetBSD: amdgpu_irq_service.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $ */
2
3 /*
4 * Copyright 2012-15 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: AMD
25 *
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_irq_service.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $");
30
31 #include <linux/slab.h>
32
33 #include "dm_services.h"
34
35 #include "include/irq_service_interface.h"
36 #include "include/logger_interface.h"
37
38 #include "dce110/irq_service_dce110.h"
39
40
41 #include "dce80/irq_service_dce80.h"
42
43 #include "dce120/irq_service_dce120.h"
44
45
46 #if defined(CONFIG_DRM_AMD_DC_DCN)
47 #include "dcn10/irq_service_dcn10.h"
48 #endif
49
50 #include "reg_helper.h"
51 #include "irq_service.h"
52
53
54
55 #define CTX \
56 irq_service->ctx
57 #define DC_LOGGER \
58 irq_service->ctx->logger
59
dal_irq_service_construct(struct irq_service * irq_service,struct irq_service_init_data * init_data)60 void dal_irq_service_construct(
61 struct irq_service *irq_service,
62 struct irq_service_init_data *init_data)
63 {
64 if (!init_data || !init_data->ctx) {
65 BREAK_TO_DEBUGGER();
66 return;
67 }
68
69 irq_service->ctx = init_data->ctx;
70 }
71
dal_irq_service_destroy(struct irq_service ** irq_service)72 void dal_irq_service_destroy(struct irq_service **irq_service)
73 {
74 if (!irq_service || !*irq_service) {
75 BREAK_TO_DEBUGGER();
76 return;
77 }
78
79 kfree(*irq_service);
80
81 *irq_service = NULL;
82 }
83
find_irq_source_info(struct irq_service * irq_service,enum dc_irq_source source)84 const struct irq_source_info *find_irq_source_info(
85 struct irq_service *irq_service,
86 enum dc_irq_source source)
87 {
88 if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
89 return NULL;
90
91 return &irq_service->info[source];
92 }
93
dal_irq_service_set_generic(struct irq_service * irq_service,const struct irq_source_info * info,bool enable)94 void dal_irq_service_set_generic(
95 struct irq_service *irq_service,
96 const struct irq_source_info *info,
97 bool enable)
98 {
99 uint32_t addr = info->enable_reg;
100 uint32_t value = dm_read_reg(irq_service->ctx, addr);
101
102 value = (value & ~info->enable_mask) |
103 (info->enable_value[enable ? 0 : 1] & info->enable_mask);
104 dm_write_reg(irq_service->ctx, addr, value);
105 }
106
dal_irq_service_set(struct irq_service * irq_service,enum dc_irq_source source,bool enable)107 bool dal_irq_service_set(
108 struct irq_service *irq_service,
109 enum dc_irq_source source,
110 bool enable)
111 {
112 const struct irq_source_info *info =
113 find_irq_source_info(irq_service, source);
114
115 if (!info) {
116 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
117 __func__,
118 source);
119 return false;
120 }
121
122 dal_irq_service_ack(irq_service, source);
123
124 if (info->funcs->set)
125 return info->funcs->set(irq_service, info, enable);
126
127 dal_irq_service_set_generic(irq_service, info, enable);
128
129 return true;
130 }
131
dal_irq_service_ack_generic(struct irq_service * irq_service,const struct irq_source_info * info)132 void dal_irq_service_ack_generic(
133 struct irq_service *irq_service,
134 const struct irq_source_info *info)
135 {
136 uint32_t addr = info->ack_reg;
137 uint32_t value = dm_read_reg(irq_service->ctx, addr);
138
139 value = (value & ~info->ack_mask) |
140 (info->ack_value & info->ack_mask);
141 dm_write_reg(irq_service->ctx, addr, value);
142 }
143
dal_irq_service_ack(struct irq_service * irq_service,enum dc_irq_source source)144 bool dal_irq_service_ack(
145 struct irq_service *irq_service,
146 enum dc_irq_source source)
147 {
148 const struct irq_source_info *info =
149 find_irq_source_info(irq_service, source);
150
151 if (!info) {
152 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n",
153 __func__,
154 source);
155 return false;
156 }
157
158 if (info->funcs->ack)
159 return info->funcs->ack(irq_service, info);
160
161 dal_irq_service_ack_generic(irq_service, info);
162
163 return true;
164 }
165
dal_irq_service_to_irq_source(struct irq_service * irq_service,uint32_t src_id,uint32_t ext_id)166 enum dc_irq_source dal_irq_service_to_irq_source(
167 struct irq_service *irq_service,
168 uint32_t src_id,
169 uint32_t ext_id)
170 {
171 return irq_service->funcs->to_dal_irq_source(
172 irq_service,
173 src_id,
174 ext_id);
175 }
176