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add some checks and read msrs

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DEvil0000
2018-08-07 08:42:50 +02:00
parent 7002abf303
commit ce4f836a20
1 changed files with 15 additions and 7 deletions
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18
lenovo_fix.py
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@@ -93,9 +93,11 @@ def is_on_battery():
def calc_time_window_vars(t):
# 0.000977 is the time unit of this CPU
time_unit = 1.0/2**readmsr(0x606, 16, 19)
for Y in range(2**5):
for Z in range(2**2):
if t <= (2**Y) * (1. + Z / 4.) * 0.000977:
if t <= (2**Y) * (1. + Z / 4.) * time_unit:
return (Y, Z)
raise ValueError('Unable to find a good combination!')
@@ -154,11 +156,12 @@ def calc_reg_values(config):
regs[power_source]['MSR_TEMPERATURE_TARGET'] = trip_offset << 24
# 0.125 is the power unit of this CPU
PL1 = int(round(config.getfloat(power_source, 'PL1_Tdp_W') / 0.125))
power_unit = 1.0/2**readmsr(0x606, 0, 3)
PL1 = int(round(config.getfloat(power_source, 'PL1_Tdp_W') / power_unit))
Y, Z = calc_time_window_vars(config.getfloat(power_source, 'PL1_Duration_s'))
TW1 = Y | (Z << 5)
PL2 = int(round(config.getfloat(power_source, 'PL2_Tdp_W') / 0.125))
PL2 = int(round(config.getfloat(power_source, 'PL2_Tdp_W') / power_unit))
Y, Z = calc_time_window_vars(config.getfloat(power_source, 'PL2_Duration_s'))
TW2 = Y | (Z << 5)
@@ -168,7 +171,7 @@ def calc_reg_values(config):
# cTDP
try:
c_tdp_target_value = int(config.getfloat(power_source, 'cTDP'))
valid_c_tdp_target_value = valid_trip_temp = min(C_TDP_RANGE[1], max(C_TDP_RANGE[0], c_tdp_target_value))
valid_c_tdp_target_value = min(C_TDP_RANGE[1], max(C_TDP_RANGE[0], c_tdp_target_value))
regs[power_source]['MSR_CONFIG_TDP_CONTROL'] = valid_c_tdp_target_value
except configparser.NoOptionError:
pass
@@ -198,10 +201,15 @@ def power_thread(config, regs, exit_event):
power['source'] = 'BATTERY' if is_on_battery() else 'AC'
# set temperature trip point
if readmsr(0xce, 30, 30) != 1:
print("setting temperature target is not supported by this CPU")
else:
writemsr(0x1a2, regs[power['source']]['MSR_TEMPERATURE_TARGET'])
# set cTDP
# TODO read MSR 0xCE to check if the operation is possible
if readmsr(0xce, 33, 34) < 2:
print("cTDP setting not supported by this cpu")
else:
writemsr(0x64b, regs[power['source']]['MSR_CONFIG_TDP_CONTROL'])
# set PL1/2 on MSR