From 526cc3ed44aacdad7a03ba7009baebbca2a308e8 Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Mon, 31 Jan 2022 21:55:51 +0530 Subject: soc/intel/{adl, common}: Add routines into CSE IA-common code This patch adds routines to keep CSE and other HECI devices into the lower power device state (AKA D0I3). - cse_set_to_d0i3 => Set CSE device state to D0I3 - heci_set_to_d0i3 => Function sets D0I3 for all HECI devices Additionally, creates a config `MAX_HECI_DEVICES` to pass the HECI device count info from SoC layer to common CSE block. As per PCH EDS, the HECI device count for various SoCs are: ADL/CNL/EHL/ICL/JSL/TGL => 6 (CSE, IDE-R, KT, CSE2, CSE3 and CSE4) APL => 1 (CSE) SKL/Xeon_SP => 5 (CSE, IDE-R, KT, CSE2 and CSE3) BUG=b:211954778 TEST=Able to build and boot Brya. Signed-off-by: Subrata Banik Change-Id: Ie32887196628fe6386896604e50338f4bc0bedfe Reviewed-on: https://review.coreboot.org/c/coreboot/+/61518 Tested-by: build bot (Jenkins) Reviewed-by: Nick Vaccaro Reviewed-by: Tim Wawrzynczak --- src/soc/intel/common/block/cse/Kconfig | 18 +++++++++++------- src/soc/intel/common/block/cse/cse.c | 20 ++++++++++++++++++++ src/soc/intel/common/block/include/intelblocks/cse.h | 6 ++++++ 3 files changed, 37 insertions(+), 7 deletions(-) (limited to 'src/soc/intel/common') diff --git a/src/soc/intel/common/block/cse/Kconfig b/src/soc/intel/common/block/cse/Kconfig index 1a112bd68a..164159c702 100644 --- a/src/soc/intel/common/block/cse/Kconfig +++ b/src/soc/intel/common/block/cse/Kconfig @@ -1,10 +1,3 @@ -config SOC_INTEL_COMMON_BLOCK_CSE - bool - default n - help - Driver for communication with Converged Security Engine (CSE) - over Host Embedded Controller Interface (HECI) - config DISABLE_HECI1_AT_PRE_BOOT bool "Disable HECI1 at the end of boot" depends on SOC_INTEL_COMMON_BLOCK_CSE @@ -14,6 +7,17 @@ config DISABLE_HECI1_AT_PRE_BOOT Mainboard users to select this config to make HECI1 `function disable` prior to handing off to payload. +config MAX_HECI_DEVICES + int + default 6 + +config SOC_INTEL_COMMON_BLOCK_CSE + bool + default n + help + Driver for communication with Converged Security Engine (CSE) + over Host Embedded Controller Interface (HECI) + config SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_SBI bool default y if HECI_DISABLE_USING_SMM diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 32f6d4f0c2..6dfe329fc4 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -988,6 +988,26 @@ bool set_cse_device_state(unsigned int devfn, enum cse_device_state requested_st return true; } +void cse_set_to_d0i3(void) +{ + if (!is_cse_devfn_visible(PCH_DEVFN_CSE)) + return; + + set_cse_device_state(PCH_DEVFN_CSE, DEV_IDLE); +} + +/* Function to set D0I3 for all HECI devices */ +void heci_set_to_d0i3(void) +{ + for (int i = 0; i < CONFIG_MAX_HECI_DEVICES; i++) { + pci_devfn_t dev = PCI_DEV(0, PCI_SLOT(PCH_DEV_SLOT_CSE), PCI_FUNC(i)); + if (!is_cse_devfn_visible(dev)) + continue; + + set_cse_device_state(dev, DEV_IDLE); + } +} + #if ENV_RAMSTAGE /* diff --git a/src/soc/intel/common/block/include/intelblocks/cse.h b/src/soc/intel/common/block/include/intelblocks/cse.h index 15b7313b19..c2efab15fc 100644 --- a/src/soc/intel/common/block/include/intelblocks/cse.h +++ b/src/soc/intel/common/block/include/intelblocks/cse.h @@ -489,6 +489,12 @@ bool cse_get_boot_performance_data(struct cse_boot_perf_rsp *boot_perf); /* Function to make cse disable using PMC IPC */ bool cse_disable_mei_devices(void); +/* Set CSE device state to D0I3 */ +void cse_set_to_d0i3(void); + +/* Function sets D0I3 for all HECI devices */ +void heci_set_to_d0i3(void); + /* * SoC override API to make heci1 disable using PCR. * -- cgit v1.2.3