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
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/memory/lib/power_thermal/throttle.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016,2019 */
/* [+] 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 throttle.C
/// @brief Determine throttle settings for memory
///
// *HWP HWP Owner: Andre A. Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Louis Stermole <stermole@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 3
// *HWP Consumed by: FSP:HB
#include <lib/shared/nimbus_defaults.H>
//std lib
#include<algorithm>
// fapi2
#include <fapi2.H>
// mss lib
#include <lib/power_thermal/throttle.H>
#include <generic/memory/lib/utils/count_dimm.H>
#include <generic/memory/lib/utils/pos.H>
namespace mss
{
namespace power_thermal
{
///
/// @brief set ATTR_MSS_RUNTIME_MEM_M_DRAM_CLOCKS and ATTR_MSS_MEM_WATT_TARGET
/// @param[in] i_targets vector of mcs targets all on the same vddr domain
/// @return FAPI2_RC_SUCCESS iff it was a success
///
fapi2::ReturnCode set_runtime_m_and_watt_limit( const std::vector< fapi2::Target<fapi2::TARGET_TYPE_MCS> >& i_targets )
{
uint32_t l_m_clocks = 0;
uint32_t l_vmem_power_limit_dimm = 0;
uint8_t l_max_dimms = 0;
uint32_t l_count_dimms_vec = 0;
uint32_t l_watt_target = 0;
for (const auto& l_mcs : i_targets)
{
l_count_dimms_vec += mss::count_dimm(l_mcs);
}
if ( l_count_dimms_vec == 0)
{
FAPI_INF("No DIMMs found. Can't calculate WATT_TARGET");
return fapi2::FAPI2_RC_SUCCESS;
}
FAPI_TRY( mrw_vmem_regulator_power_limit_per_dimm_ddr4(l_vmem_power_limit_dimm));
FAPI_TRY( mrw_mem_m_dram_clocks(l_m_clocks));
FAPI_TRY( mrw_max_number_dimms_possible_per_vmem_regulator(l_max_dimms));
//Now calculate the watt target
//Calculate max power available / number of dimms configured on the VDDR rail
l_watt_target = (l_vmem_power_limit_dimm * l_max_dimms) / l_count_dimms_vec;
// If we have too many dimms, deconfigure the first MCS
// We know there are MCSs on the vector due to the check above
FAPI_ASSERT( (l_count_dimms_vec <= l_max_dimms),
fapi2::MSS_DIMM_COUNT_EXCEEDS_VMEM_REGULATOR_LIMIT()
.set_MAX_DIMM_AMOUNT(l_max_dimms)
.set_DIMMS_SEEN(l_count_dimms_vec),
"The number of dimms counted (%d) on the vector of MCS surpasses the limit (%d)",
l_count_dimms_vec,
l_max_dimms);
FAPI_INF("Calculated ATTR_MSS_MEM_WATT_TARGET is %d, power_limit dimm is %d, max_dimms is %d, count dimms on vector is %d",
l_watt_target,
l_vmem_power_limit_dimm,
l_max_dimms,
l_count_dimms_vec);
for (const auto& l_mcs : i_targets)
{
uint32_t l_watt_temp [PORTS_PER_MCS][MAX_DIMM_PER_PORT] = {{l_watt_target, l_watt_target}, {l_watt_target, l_watt_target}};
uint32_t l_runtime_m [PORTS_PER_MCS] = {l_m_clocks, l_m_clocks};
FAPI_TRY( FAPI_ATTR_SET( fapi2::ATTR_MSS_RUNTIME_MEM_M_DRAM_CLOCKS, l_mcs, l_runtime_m));
FAPI_TRY( FAPI_ATTR_SET( fapi2::ATTR_MSS_MEM_WATT_TARGET, l_mcs, l_watt_temp));
}
return fapi2::FAPI2_RC_SUCCESS;
fapi_try_exit:
FAPI_ERR("Error setting power_thermal attributes MSS_WATT_TARGET");
return fapi2::current_err;
}
}//namespace power_thermal
}//namespace mss
|
