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
|
/*
* Copyright (c) 2023, MediaTek Inc. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <string.h>
#include <common/debug.h>
#include <drivers/console.h>
#include <lib/spinlock.h>
#include <lpm/mt_lp_rqm.h>
struct mt_lp_res_req_m {
unsigned int uname[MT_LP_RQ_USER_MAX];
unsigned int user_num;
unsigned int user_valid;
unsigned int resource_num;
unsigned int generic_resource_req;
unsigned int flag;
struct mt_resource_req_manager *plat_rqm;
};
static struct mt_lp_res_req_m plat_mt_rqm;
static spinlock_t mt_lp_rq_lock;
static int mt_lp_resource_request(struct mt_lp_resource_user *this, unsigned int resource)
{
int i;
struct mt_lp_res_req *const *rs;
if ((this == NULL) || (resource == 0) || (resource > MT_LP_RQ_ALL)) {
ERROR("invalid request(%x)\n", resource);
return MT_LP_RQ_STA_BAD;
}
spin_lock(&mt_lp_rq_lock);
rs = (plat_mt_rqm.plat_rqm)->res;
for (i = 0; i < plat_mt_rqm.resource_num; i++) {
if ((resource & rs[i]->res_id) != 0) {
rs[i]->res_usage |= this->umask;
}
}
plat_mt_rqm.flag = MT_LP_RQ_FLAG_NEED_UPDATE;
spin_unlock(&mt_lp_rq_lock);
return MT_LP_RQ_STA_OK;
}
static int mt_lp_resource_release(struct mt_lp_resource_user *this)
{
int i;
struct mt_lp_res_req *const *rs;
if (this == NULL) {
return MT_LP_RQ_STA_BAD;
}
spin_lock(&mt_lp_rq_lock);
rs = (plat_mt_rqm.plat_rqm)->res;
for (i = 0; i < plat_mt_rqm.resource_num; i++) {
rs[i]->res_usage &= ~(this->umask);
}
plat_mt_rqm.flag = MT_LP_RQ_FLAG_NEED_UPDATE;
spin_unlock(&mt_lp_rq_lock);
return MT_LP_RQ_STA_OK;
}
int mt_lp_resource_request_manager_register(struct mt_resource_req_manager *rqm)
{
unsigned int count;
struct mt_lp_res_req *const *rs;
if ((rqm == NULL) || (rqm->res == NULL) || (plat_mt_rqm.plat_rqm != NULL)) {
return MT_LP_RQ_STA_BAD;
}
rs = rqm->res;
count = 0;
while (*rs != NULL) {
count++;
rs++;
}
plat_mt_rqm.plat_rqm = rqm;
plat_mt_rqm.resource_num = count;
return MT_LP_RQ_STA_OK;
}
int mt_lp_resource_user_register(char *user, struct mt_lp_resource_user *ru)
{
int i, len;
unsigned int uname;
if ((plat_mt_rqm.plat_rqm == NULL) || (plat_mt_rqm.user_num >= MT_LP_RQ_USER_MAX) ||
(user == NULL)) {
ru->uid = MT_LP_RQ_USER_INVALID;
ru->umask = 0;
ru->request = NULL;
ru->release = NULL;
ERROR("rqm register user invalid\n");
return MT_LP_RQ_STA_BAD;
}
len = strnlen(user, MT_LP_RQ_USER_NAME_LEN);
uname = 0;
for (i = 0; i < len; i++) {
uname |= (user[i] << (MT_LP_RQ_USER_CHAR_U * i));
}
spin_lock(&mt_lp_rq_lock);
i = plat_mt_rqm.user_num;
plat_mt_rqm.user_num += 1;
plat_mt_rqm.uname[i] = uname;
plat_mt_rqm.user_valid |= BIT(i);
spin_unlock(&mt_lp_rq_lock);
ru->umask = BIT(i);
ru->uid = i;
ru->request = mt_lp_resource_request;
ru->release = mt_lp_resource_release;
INFO("%s register by %s, uid = %d\n", __func__, user, ru->uid);
return MT_LP_RQ_STA_OK;
}
int mt_lp_rq_get_status(int type, void *p)
{
int i;
unsigned int update_sta;
struct mt_lp_res_req *const *rs;
struct resource_req_status *rq_sta = (struct resource_req_status *)p;
if (plat_mt_rqm.flag != 0) {
spin_lock(&mt_lp_rq_lock);
update_sta = 0;
rs = (plat_mt_rqm.plat_rqm)->res;
for (i = 0; i < plat_mt_rqm.resource_num; i++) {
update_sta |= ((rs[i]->res_usage & plat_mt_rqm.user_valid) != 0) ?
rs[i]->res_rq : 0;
}
plat_mt_rqm.generic_resource_req = update_sta;
plat_mt_rqm.flag = MT_LP_RQ_FLAG_DONE;
spin_unlock(&mt_lp_rq_lock);
}
switch (type) {
case PLAT_RQ_REQ_USAGE:
rs = (plat_mt_rqm.plat_rqm)->res;
rq_sta->val = (rq_sta->id < plat_mt_rqm.resource_num) ?
rs[rq_sta->id]->res_usage : plat_mt_rqm.generic_resource_req;
break;
case PLAT_RQ_USER_NUM:
rq_sta->val = plat_mt_rqm.user_num;
break;
case PLAT_RQ_USER_VALID:
rq_sta->val = plat_mt_rqm.user_valid;
break;
case PLAT_RQ_PER_USER_NAME:
rq_sta->val = (rq_sta->id < plat_mt_rqm.user_num) ?
plat_mt_rqm.uname[rq_sta->id] : 0;
break;
case PLAT_RQ_REQ_NUM:
rq_sta->val = plat_mt_rqm.resource_num;
break;
default:
break;
}
return MT_LP_RQ_STA_OK;
}
int mt_lp_rq_update_status(int type, void *p)
{
unsigned int user_mask;
struct resource_req_status *rq_sta = (struct resource_req_status *)p;
switch (type) {
case PLAT_RQ_USER_VALID:
if (rq_sta->id < plat_mt_rqm.user_num) {
user_mask = BIT(rq_sta->id);
spin_lock(&mt_lp_rq_lock);
plat_mt_rqm.user_valid = (rq_sta->val == 0) ?
(plat_mt_rqm.user_valid & ~(user_mask)) :
(plat_mt_rqm.user_valid | user_mask);
plat_mt_rqm.flag = MT_LP_RQ_FLAG_NEED_UPDATE;
spin_unlock(&mt_lp_rq_lock);
}
break;
default:
break;
}
return MT_LP_RQ_STA_OK;
}
|
