4b0d9c8f8f
The hardware definition of every TPMI feature contains a major and minor version. When there is a change in the MMIO offset or change in the definition of a field, hardware will change major version. For addition of new fields without modifying existing MMIO offsets or fields, only the minor version is changed. Driver is developed to support uncore frequency control (UFS) for a major and minor version. If the hardware changes major version, since offsets and definitions are changed, driver cannot continue to provide UFS interface to users. Driver can still function with minor version change as it will just miss the new functionality added by the hardware. The current implementation logs information message and skips adding uncore sysfs entry for a resource for any version mismatch. Check major and minor version mismatch for every valid resource and fail on any major version mismatch by logging an error message. A valid resource has a version which is not 0xFF. If there is mismatch with the minor version, continue with a log message. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20231003184916.1860084-4-srinivas.pandruvada@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| uncore-frequency-common.c | ||
| uncore-frequency-common.h | ||
| uncore-frequency-tpmi.c | ||
| uncore-frequency.c | ||