From 3a9cde9ab630fa34240b16f7e6ae10b5a61aa67e Mon Sep 17 00:00:00 2001 From: Tim Wawrzynczak Date: Fri, 29 May 2020 14:19:15 -0600 Subject: dptf: Add support for Critical Policies This patch adds support for DPTF Critical Policies, which are consist of Method definitions only. They are `_CRT` and `_HOT`, which are defined as temperature thresholds that, when exceeded, will execute a graceful suspend or a graceful shutdown, respectively. BUG=b:143539650 TEST=compiles Change-Id: I711ecdcf17ae8f6e653f33069201da4515ace85e Signed-off-by: Tim Wawrzynczak Reviewed-on: https://review.coreboot.org/c/coreboot/+/41887 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie --- src/drivers/intel/dptf/chip.h | 1 + src/drivers/intel/dptf/dptf.c | 8 ++++++++ 2 files changed, 9 insertions(+) (limited to 'src/drivers/intel') diff --git a/src/drivers/intel/dptf/chip.h b/src/drivers/intel/dptf/chip.h index 0cd2ad2063..8d77603f9e 100644 --- a/src/drivers/intel/dptf/chip.h +++ b/src/drivers/intel/dptf/chip.h @@ -8,6 +8,7 @@ struct drivers_intel_dptf_config { struct { struct dptf_active_policy active[DPTF_MAX_ACTIVE_POLICIES]; + struct dptf_critical_policy critical[DPTF_MAX_CRITICAL_POLICIES]; struct dptf_passive_policy passive[DPTF_MAX_PASSIVE_POLICIES]; } policies; }; diff --git a/src/drivers/intel/dptf/dptf.c b/src/drivers/intel/dptf/dptf.c index 74f481294d..5cad07dade 100644 --- a/src/drivers/intel/dptf/dptf.c +++ b/src/drivers/intel/dptf/dptf.c @@ -41,6 +41,11 @@ static bool is_participant_used(const struct drivers_intel_dptf_config *config, config->policies.passive[i].target == participant) return true; + /* Critical? */ + for (i = 0; i < DPTF_MAX_CRITICAL_POLICIES; ++i) + if (config->policies.critical[i].source == participant) + return true; + /* Check fan as well (its use is implicit in the Active policy) */ if (participant == DPTF_FAN && config->policies.active[0].target != DPTF_NONE) return true; @@ -64,6 +69,9 @@ static void dptf_fill_ssdt(const struct device *dev) dptf_write_passive_policies(config->policies.passive, DPTF_MAX_PASSIVE_POLICIES); + dptf_write_critical_policies(config->policies.critical, + DPTF_MAX_CRITICAL_POLICIES); + printk(BIOS_INFO, "\\_SB.DPTF: %s at %s\n", dev->chip_ops->name, dev_path(dev)); } -- cgit v1.2.3