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d805456c71
Enumerate TPMI SST driver and create basic framework to add more features. The basic user space interface is still same as the legacy using /dev/isst_interface. Users of "intel-speed-select" utility should be able to use same commands as prior gens without being aware of new underlying hardware interface. TPMI SST driver enumerates on device "intel_vsec.tpmi-sst". Since there can be multiple instances and there is one common SST core, split implementation into two parts: A common core part and an enumeration part. The enumeration driver is loaded for each device instance and register with the TPMI SST core driver. On very first enumeration the TPMI SST core driver register with SST core driver to get IOCTL callbacks. The api_version is incremented for IOCTL ISST_IF_GET_PLATFORM_INFO, so that user space can issue new IOCTLs. Each TPMI package contains multiple power domains. Each power domain has its own set of SST controls. For each domain map the MMIO memory and update per domain struct tpmi_per_power_domain_info. This information will be used to implement other SST interfaces. Implement first IOCTL commands to get number of TPMI SST instances and instance mask as some of the power domains may not have any SST controls. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Pragya Tanwar <pragya.tanwar@intel.com> Link: https://lore.kernel.org/r/20230308070642.1727167-3-srinivas.pandruvada@linux.intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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| Kbuild | ||