-
Notifications
You must be signed in to change notification settings - Fork 97
/
p9a_mss_utils_to_throttle.C
160 lines (137 loc) · 8.1 KB
/
p9a_mss_utils_to_throttle.C
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
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9a/procedures/hwp/memory/p9a_mss_utils_to_throttle.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2019,2020 */
/* [+] 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 p9a_mss_utils_to_throttle.C
/// @brief Sets throttles and power attributes for a given utilization value
/// @note TMGT will call this procedure to set the N address operations (commands)
/// allowed within a window of M DRAM clocks given the minimum dram data bus utilization.
//// If input utilization is zero, then safemode values from MRW will be used
///
// *HWP HWP Owner: Andre A. Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Louis Stermole <stermole@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 1
// *HWP Consumed by: FSP:HB
#include <p9a_mss_utils_to_throttle.H>
#include <lib/shared/exp_defaults.H>
#include <lib/shared/exp_consts.H>
#include <mss_explorer_attribute_getters.H>
#include <lib/power_thermal/exp_throttle.H>
// fapi2
#include <fapi2.H>
extern "C"
{
///
/// @brief Determines throttle and power values for a given port databus utilization.
/// @param[in] i_targets vector of OCMB_CHIPs to set throttle and power attributes on
/// @return FAPI2_RC_SUCCESS iff ok
/// @note ATTR_MSS_MEM_THROTTLED_N_COMMANDS_PER_SLOT will be set to worst case of all slots passed in
/// @note input ATTR_MSS_DATABUS_UTIL and ATTR_MSS_MEM_WATT_TARGET
/// @note output ATTR_MSS_MEM_THROTTLED_N_COMMANDS_PER_SLOT, ATTR_MSS_MEM_THROTTLED_N_COMMANDS_PER_PORT, and ATTR_MSS_PORT_MAXPOWER
/// @note Does not set runtime throttles or set registers to throttle values
///
fapi2::ReturnCode p9a_mss_utils_to_throttle(const std::vector<fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>>& i_targets)
{
constexpr uint64_t l_min_util = mss::power_thermal::throttle_traits<mss::mc_type::EXPLORER>::MIN_UTIL;
FAPI_INF("Entering p9a_mss_utils_to_throttle");
std::vector<fapi2::Target<fapi2::TARGET_TYPE_MEM_PORT>> l_exceeded_power;
bool l_util_error = false;
for (const auto& l_ocmb : i_targets)
{
if (mss::count_dimm(l_ocmb) == 0)
{
FAPI_INF("Skipping %s because it has no DIMM targets", mss::c_str(l_ocmb));
continue;
}
uint32_t l_max_databus_util = 0;
uint32_t l_dram_clocks = 0;
uint32_t l_safemode_util = 0;
uint32_t l_safemode_throttle_per_port = 0;
uint32_t l_calc_util = 0;
FAPI_TRY(mss::attr::get_mrw_mem_m_dram_clocks(l_dram_clocks));
FAPI_TRY(mss::attr::get_mrw_max_dram_databus_util(l_max_databus_util));
FAPI_TRY(mss::attr::get_mrw_safemode_dram_databus_util(l_safemode_util));
l_safemode_throttle_per_port = mss::power_thermal::calc_n_from_dram_util(
(l_safemode_util / mss::power_thermal::throttle_const::PERCENT_CONVERSION),
l_dram_clocks);
for(const auto& l_port : mss::find_targets<fapi2::TARGET_TYPE_MEM_PORT>(l_ocmb))
{
fapi2::ReturnCode l_rc;
uint32_t l_input_databus_util = 0;
bool l_safemode = false;
// Util attribute set by OCC
FAPI_TRY( mss::attr::get_databus_util(l_port, l_input_databus_util) );
FAPI_INF("Input databus utilization for %s is %d",
mss::c_str(l_port),
l_input_databus_util);
// If input utilization is zero, use mrw safemode throttle values for utilization
// else make sure we're within our maximum utilization limit
FAPI_TRY(mss::power_thermal::calc_utilization<mss::mc_type::EXPLORER>(l_port,
l_input_databus_util,
l_dram_clocks,
l_safemode_throttle_per_port,
l_max_databus_util,
l_calc_util,
l_util_error,
l_safemode));
// Error if utilization is less than MIN_UTIL
// Don't exit, let HWP finish and return error at end
FAPI_ASSERT_NOEXIT( !l_util_error,
fapi2::MSS_MIN_UTILIZATION_ERROR()
.set_INPUT_UTIL_VALUE(l_input_databus_util)
.set_MIN_UTIL_VALUE(l_min_util),
"%s Input utilization (%d) less than minimum utilization allowed (%d)",
mss::c_str(l_port), l_input_databus_util, l_min_util);
// Make a throttle object in order to calculate the port power
mss::power_thermal::throttle<mss::mc_type::EXPLORER> l_throttle(l_port, l_rc);
FAPI_TRY(l_rc, "%s Error calculating mss::power_thermal::throttle constructor in p9a_mss_utils_to_throttles",
mss::c_str(l_port));
FAPI_TRY(l_throttle.calc_slots_and_power(l_calc_util));
FAPI_INF( "%s Calculated N commands per port %d, per slot %d, commands per dram clock window %d, maxpower is %d",
mss::c_str(l_port),
l_throttle.iv_n_port,
l_throttle.iv_n_slot,
l_dram_clocks,
l_throttle.iv_calc_port_maxpower);
FAPI_TRY(mss::attr::set_port_maxpower(l_port, l_throttle.iv_calc_port_maxpower));
FAPI_TRY(mss::attr::set_mem_throttled_n_commands_per_slot(l_port,
(l_safemode) ? l_safemode_throttle_per_port : l_throttle.iv_n_slot));
FAPI_TRY(mss::attr::set_mem_throttled_n_commands_per_port(l_port,
(l_safemode) ? l_safemode_throttle_per_port : l_throttle.iv_n_port));
} // ports
} // ocmbs
// Equalize throttles to prevent variable performance
// Note that we don't do anything with any port that exceed the power limit here, as we don't have an input power limit to go from
FAPI_TRY(mss::power_thermal::equalize_throttles<mss::mc_type::EXPLORER>(i_targets, mss::throttle_type::POWER,
l_exceeded_power));
// Return a failing RC code if we had any input utilization values less than MIN_UTIL
if (l_util_error)
{
fapi2::current_err = fapi2::RC_MSS_MIN_UTILIZATION_ERROR;
}
fapi_try_exit:
return fapi2::current_err;
}
}// extern C