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
|
/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define pr_fmt(fmt) "CHIPTOD: " fmt
#include <skiboot.h>
#include <chiptod.h>
#include <fsp.h>
/* Response status for fsp command 0xE6, s/c 0x06 (Enable/Disable Topology) */
#define FSP_STATUS_TOPO_IN_USE 0xb8 /* topology is in use */
static bool fsp_chiptod_update_topology(uint32_t cmd_sub_mod,
struct fsp_msg *msg)
{
struct fsp_msg *resp;
enum chiptod_topology topo;
bool action;
uint8_t status = 0;
switch (cmd_sub_mod) {
case FSP_CMD_TOPO_ENABLE_DISABLE:
/*
* Action Values: 0x00 = Disable, 0x01 = Enable
* Topology Values: 0x00 = Primary, 0x01 = Secondary
*/
action = !!msg->data.bytes[2];
topo = msg->data.bytes[3];
prlog(PR_DEBUG, "Topology update event:\n");
prlog(PR_DEBUG, " Action = %s, Topology = %s\n",
action ? "Enable" : "Disable",
topo ? "Secondary" : "Primary");
if (!chiptod_adjust_topology(topo, action))
status = FSP_STATUS_TOPO_IN_USE;
else
status = 0x00;
resp = fsp_mkmsg(FSP_RSP_TOPO_ENABLE_DISABLE | status, 0);
if (!resp) {
prerror("Response allocation failed\n");
return false;
}
if (fsp_queue_msg(resp, fsp_freemsg)) {
fsp_freemsg(resp);
prerror("Failed to queue response msg\n");
return false;
}
return true;
default:
prlog(PR_DEBUG, "Unhandled sub cmd: %06x\n", cmd_sub_mod);
break;
}
return false;
}
static struct fsp_client fsp_chiptod_client = {
.message = fsp_chiptod_update_topology,
};
void fsp_chiptod_init(void)
{
/* Register for Class E6 (HW maintanance) */
fsp_register_client(&fsp_chiptod_client, FSP_MCLASS_HW_MAINT);
}
|
