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
60void 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
72void 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
84const 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
94void 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
107bool 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
132void 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
144bool 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
166enum 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