From 829de299d1a4dcac3cd6c494d1c974bdbc608611 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Fri, 29 Apr 2022 15:40:51 +0100 Subject: hw/cxl/component: Add utils for interleave parameter encoding/decoding Both registers and the CFMWS entries in CDAT use simple encodings for the number of interleave ways and the interleave granularity. Introduce simple conversion functions to/from the unencoded number / size. So far the iw decode has not been needed so is it not implemented. Signed-off-by: Jonathan Cameron Reviewed-by: Alex Bennée Message-Id: <20220429144110.25167-27-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/cxl/cxl_component.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/hw/cxl/cxl_component.h b/include/hw/cxl/cxl_component.h index 7d8f395cbe..4f69688c47 100644 --- a/include/hw/cxl/cxl_component.h +++ b/include/hw/cxl/cxl_component.h @@ -210,4 +210,12 @@ static inline int cxl_decoder_count_enc(int count) return 0; } +uint8_t cxl_interleave_ways_enc(int iw, Error **errp); +uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp); + +static inline hwaddr cxl_decode_ig(int ig) +{ + return 1 << (ig + 8); +} + #endif -- cgit v1.2.3-55-g7522