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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2023-03-07 23:06:36 -0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-03-16 15:18:02 +0100 |
| commit | d805456c712f93ba8a012430f2a93bec133b6ff4 (patch) | |
| tree | a9ba6f65c68810805f977b0daa4ee87a862849ee /include | |
| parent | e6d3418130cdf718eff72db9a05d7262ebb49cff (diff) | |
| download | linux-stable-d805456c712f93ba8a012430f2a93bec133b6ff4.tar.gz linux-stable-d805456c712f93ba8a012430f2a93bec133b6ff4.tar.bz2 linux-stable-d805456c712f93ba8a012430f2a93bec133b6ff4.zip | |
platform/x86: ISST: Enumerate TPMI SST and create framework
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/isst_if.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/uapi/linux/isst_if.h b/include/uapi/linux/isst_if.h index ba078f8e9add..bf32d959f6e8 100644 --- a/include/uapi/linux/isst_if.h +++ b/include/uapi/linux/isst_if.h @@ -163,10 +163,28 @@ struct isst_if_msr_cmds { struct isst_if_msr_cmd msr_cmd[1]; }; +/** + * struct isst_tpmi_instance_count - Get number of TPMI instances per socket + * @socket_id: Socket/package id + * @count: Number of instances + * @valid_mask: Mask of instances as there can be holes + * + * Structure used to get TPMI instances information using + * IOCTL ISST_IF_COUNT_TPMI_INSTANCES. + */ +struct isst_tpmi_instance_count { + __u8 socket_id; + __u8 count; + __u16 valid_mask; +}; + #define ISST_IF_MAGIC 0xFE #define ISST_IF_GET_PLATFORM_INFO _IOR(ISST_IF_MAGIC, 0, struct isst_if_platform_info *) #define ISST_IF_GET_PHY_ID _IOWR(ISST_IF_MAGIC, 1, struct isst_if_cpu_map *) #define ISST_IF_IO_CMD _IOW(ISST_IF_MAGIC, 2, struct isst_if_io_regs *) #define ISST_IF_MBOX_COMMAND _IOWR(ISST_IF_MAGIC, 3, struct isst_if_mbox_cmds *) #define ISST_IF_MSR_COMMAND _IOWR(ISST_IF_MAGIC, 4, struct isst_if_msr_cmds *) + +#define ISST_IF_COUNT_TPMI_INSTANCES _IOR(ISST_IF_MAGIC, 5, struct isst_tpmi_instance_count *) + #endif |