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cxl: Add functions to get an instance of / count regblocks of a given…
… type Until the recently release CXL 3.0 specification, there was only ever one instance of any given register block pointed to by the Register Block Locator DVSEC. Now, the specification allows for multiple CXL PMU instances, each with their own register block. To enable this add cxl_find_regblock_instance() that takes an index parameter and use that to implement cxl_count_regblock() and cxl_find_regblock(). Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20230526095824.16336-3-Jonathan.Cameron@huawei.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Jonathan Cameron
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May 30, 2023
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