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| author | Felix Held <felix-coreboot@felixheld.de> | 2023-03-25 03:02:52 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-03-29 16:19:03 +0000 |
| commit | e91392a5fe28eeb23e1791de15c31c3f5c8a6a82 (patch) | |
| tree | 472b7897cd15dfc11a597762d1be82168f1da588 /src | |
| parent | 3ee7453e0e0892631df0e629cdb93f07ee67e645 (diff) | |
soc/amd/common/acpi/cpu_power_state: factor out get_visible_pstate_count
Factor out the MSR access into a function with a more descriptive name.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I331c3205390edcbd8749b2d52b7cc7ac3a8ced5a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74020
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/amd/common/block/acpi/cpu_power_state.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/soc/amd/common/block/acpi/cpu_power_state.c b/src/soc/amd/common/block/acpi/cpu_power_state.c index d518ea082e..2cfc3cb57c 100644 --- a/src/soc/amd/common/block/acpi/cpu_power_state.c +++ b/src/soc/amd/common/block/acpi/cpu_power_state.c @@ -46,6 +46,11 @@ static uint32_t get_pstate_core_power(union pstate_msr pstate_reg) return power_in_mw; } +static uint32_t get_visible_pstate_count(void) +{ + return (rdmsr(PS_LIM_REG).lo & PS_LIM_MAX_VAL_MASK) >> PS_MAX_VAL_SHFT; +} + /* * Populate structure describing enabled p-states and return count of enabled p-states. */ @@ -57,7 +62,7 @@ static size_t get_pstate_info(struct acpi_sw_pstate *pstate_values, uint32_t max_pstate; pstate_count = 0; - max_pstate = (rdmsr(PS_LIM_REG).lo & PS_LIM_MAX_VAL_MASK) >> PS_MAX_VAL_SHFT; + max_pstate = get_visible_pstate_count(); for (pstate = 0; pstate <= max_pstate; pstate++) { pstate_reg.raw = rdmsr(PSTATE_MSR(pstate)).raw; |