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
 58void 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
 70void 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
 82static 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
 92void 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
105bool 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
130void 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
142bool 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
164enum 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}