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
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/ffdc/p9_eq_clear_atomic_lock.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2017 */
/* [+] International Business Machines 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. */
/* */
/* IBM_PROLOG_END_TAG */
///
/// @file p9_eq_clear_atomic_lock.C
///
/// *HWP HW Owner : Greg Still <stillgs@us.ibm.com>
/// *HWP HW Backup Owner : Brian Vanderpool <vanderp@us.ibm.com>
/// *HWP FW Owner : Amit Tendolkar <amit.tendolkar@in.ibm.com>
/// *HWP Team : PM
/// *HWP Level : 2
/// *HWP Consumed by : SBE, HB
#include <fapi2.H>
#include <p9_quad_scom_addresses.H>
#include <p9_quad_scom_addresses_fld.H>
#include <p9_eq_clear_atomic_lock.H>
extern "C"
{
#ifndef __PPE__
fapi2::ReturnCode
p9_eq_clear_atomic_lock ( const fapi2::ffdc_t& i_eq_target,
fapi2::ReturnCode& io_rc )
{
FAPI_INF (">> p9_eq_clear_atomic_lock");
fapi2::ReturnCode l_rc;
// Note: No FFDC to be appended to io_rc in this callback
// leaving it here for the callback synxtax
fapi2::Target<fapi2::TARGET_TYPE_EQ> l_eq =
*(reinterpret_cast<const fapi2::Target<fapi2::TARGET_TYPE_EQ> *>
(i_eq_target.ptr()));
// Note: Not using FAPI_TRY in FFDC callback context, as it can
// potentially reset the fapi2::current_err
l_rc = p9_clear_atomic_lock (l_eq);
return l_rc;
}
#endif
fapi2::ReturnCode
p9_clear_atomic_lock (const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_eq )
{
FAPI_INF (">> p9_clear_atomic_lock");
fapi2::ReturnCode l_rc;
fapi2::buffer<uint64_t> l_value;
// Note: Not using FAPI_TRY in FFDC callback context, as it can
// potentially reset the fapi2::current_err
l_rc = fapi2::getScom (i_eq, EQ_ATOMIC_LOCK_REG, l_value);
if ( (l_rc == fapi2::FAPI2_RC_SUCCESS) &&
(l_value.getBit<EQ_ATOMIC_LOCK_REG_ENABLE>() == 1))
{
// Pick the atomic lock if it was already taken
l_rc = fapi2::putScom (i_eq, EQ_ATOMIC_LOCK_REG, l_value);
if (l_rc == fapi2::FAPI2_RC_SUCCESS)
{
l_value.flush<0>();
// Clear the atomic lock
l_rc = fapi2::putScom (i_eq, EQ_ATOMIC_LOCK_REG, l_value);
}
}
if (l_rc != fapi2::FAPI2_RC_SUCCESS)
{
FAPI_ERR ("Could not clear atomic lock");
}
FAPI_INF ("<< p9_clear_atomic_lock");
return l_rc;
}
}
|
