aboutsummaryrefslogtreecommitdiff
path: root/lib/sdei/sdei.c
blob: 264da28aee0de1fc8829698c7c1706b489fb1ade (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/*
 * Copyright (c) 2018, Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arm_gic.h>
#include <assert.h>
#include <sdei.h>
#include <smccc.h>
#include <stdint.h>
#include <tftf_lib.h>

int64_t sdei_version(void)
{
	smc_args args = { SDEI_VERSION };
	smc_ret_values ret;

	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_interrupt_bind(int intr, struct sdei_intr_ctx *intr_ctx)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	assert(intr_ctx);

	intr_ctx->priority = arm_gic_get_intr_priority(intr);
	intr_ctx->num = intr;
	intr_ctx->enabled = arm_gic_intr_enabled(intr);
	arm_gic_intr_disable(intr);

	args.fid = SDEI_INTERRUPT_BIND;
	args.arg1 = intr;
	ret = tftf_smc(&args);
	if (ret.ret0 < 0) {
		arm_gic_set_intr_priority(intr_ctx->num, intr_ctx->priority);
		if (intr_ctx->enabled)
			arm_gic_intr_enable(intr_ctx->num);
	}

	return ret.ret0;
}

int64_t sdei_interrupt_release(int ev, const struct sdei_intr_ctx *intr_ctx)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	assert(intr_ctx);

	args.fid = SDEI_INTERRUPT_RELEASE;
	args.arg1 = ev;
	ret = tftf_smc(&args);
	if (ret.ret0 == 0) {
		arm_gic_set_intr_priority(intr_ctx->num, intr_ctx->priority);
		if (intr_ctx->enabled)
			arm_gic_intr_enable(intr_ctx->num);
	}

	return ret.ret0;
}

int64_t sdei_event_register(int ev, sdei_handler_t *ep,
	uint64_t ep_arg, int flags, uint64_t mpidr)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_REGISTER;
	args.arg1 = ev;
	args.arg2 = (u_register_t)ep;
	args.arg3 = ep_arg;
	args.arg4 = flags;
	args.arg5 = mpidr;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_unregister(int ev)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_UNREGISTER;
	args.arg1 = ev;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_enable(int ev)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_ENABLE;
	args.arg1 = ev;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_disable(int ev)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_DISABLE;
	args.arg1 = ev;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_pe_mask(void)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_PE_MASK;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_pe_unmask(void)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_PE_UNMASK;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_private_reset(void)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_PRIVATE_RESET;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_shared_reset(void)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_SHARED_RESET;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_signal(uint64_t mpidr)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_SIGNAL;
	args.arg1 = 0; /* must be event 0 */
	args.arg2 = mpidr;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_status(int32_t ev)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_STATUS;
	args.arg1 = ev;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_routing_set(int32_t ev, uint64_t flags)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_ROUTING_SET;
	args.arg1 = ev;
	args.arg2 = flags;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_context(uint32_t param)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_CONTEXT;
	args.arg1 = param;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_complete(uint32_t flags)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_COMPLETE;
	args.arg1 = flags;
	ret = tftf_smc(&args);
	return ret.ret0;
}

int64_t sdei_event_complete_and_resume(uint64_t addr)
{
	smc_args args = { 0 };
	smc_ret_values ret;

	args.fid = SDEI_EVENT_COMPLETE_AND_RESUME;
	args.arg1 = addr;
	ret = tftf_smc(&args);
	return ret.ret0;
}