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_DCN)
 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
 55void 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
 67void 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
 79const 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
 89void 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
102bool 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
127void 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
139bool 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
161enum 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}