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| author | Jonathan Cameron | 2022-04-29 16:40:51 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2022-05-13 12:13:36 +0200 |
| commit | 829de299d1a4dcac3cd6c494d1c974bdbc608611 (patch) | |
| tree | 10ee4ca91c16548a4980a462f08e24743fcd844c /include | |
| parent | acpi/cxl: Create the CEDT (9.14.1) (diff) | |
| download | qemu-829de299d1a4dcac3cd6c494d1c974bdbc608611.tar.gz qemu-829de299d1a4dcac3cd6c494d1c974bdbc608611.tar.xz qemu-829de299d1a4dcac3cd6c494d1c974bdbc608611.zip | |
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 <Jonathan.Cameron@huawei.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220429144110.25167-27-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/cxl/cxl_component.h | 8 |
1 files changed, 8 insertions, 0 deletions
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 |