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| author | Shiju Jose <shiju.jose@huawei.com> | 2025-02-20 12:42:42 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2025-02-26 08:51:31 -0700 |
| commit | 5e5ac21f629de796ab5d598b59c5e468c6fe4f95 (patch) | |
| tree | eb44b19122181caefb09b6c652513685c7d37d3e /include/cxl | |
| parent | 44818d387e55fa11476249783d14f925a269b196 (diff) | |
| download | linux-5e5ac21f629de796ab5d598b59c5e468c6fe4f95.tar.gz linux-5e5ac21f629de796ab5d598b59c5e468c6fe4f95.tar.bz2 linux-5e5ac21f629de796ab5d598b59c5e468c6fe4f95.zip | |
cxl/mbox: Add GET_FEATURE mailbox command
Add support for GET_FEATURE mailbox command.
CXL spec r3.2 section 8.2.9.6 describes optional device specific features.
The settings of a feature can be retrieved using Get Feature command.
CXL spec r3.2 section 8.2.9.6.2 describes Get Feature command.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250220194438.2281088-5-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'include/cxl')
| -rw-r--r-- | include/cxl/features.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/cxl/features.h b/include/cxl/features.h index 5b3485eb0f77..766c09978e5e 100644 --- a/include/cxl/features.h +++ b/include/cxl/features.h @@ -67,6 +67,29 @@ struct cxl_mbox_get_sup_feats_out { struct cxl_feat_entry ents[] __counted_by_le(num_entries); } __packed; +/* + * Get Feature CXL spec r3.2 Spec 8.2.9.6.2 + */ + +/* + * Get Feature input payload + * CXL spec r3.2 section 8.2.9.6.2 Table 8-99 + */ +struct cxl_mbox_get_feat_in { + uuid_t uuid; + __le16 offset; + __le16 count; + u8 selection; +} __packed; + +/* Selection field for 'struct cxl_mbox_get_feat_in' */ +enum cxl_get_feat_selection { + CXL_GET_FEAT_SEL_CURRENT_VALUE, + CXL_GET_FEAT_SEL_DEFAULT_VALUE, + CXL_GET_FEAT_SEL_SAVED_VALUE, + CXL_GET_FEAT_SEL_MAX +}; + /** * struct cxl_features_state - The Features state for the device * @cxlds: Pointer to CXL device state @@ -82,6 +105,7 @@ struct cxl_features_state { } *entries; }; +struct cxl_mailbox; #ifdef CONFIG_CXL_FEATURES inline struct cxl_features_state *to_cxlfs(struct cxl_dev_state *cxlds); int devm_cxl_setup_features(struct cxl_dev_state *cxlds); |