diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2025-02-20 12:42:40 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2025-02-26 08:51:27 -0700 |
| commit | f0e6a2329bf9d44138be2163370ae9537cbdaf74 (patch) | |
| tree | be2818d4ffd7442a8a5bc17778f2a31a2008fe7c /drivers/cxl/Kconfig | |
| parent | cbbca60a1efc1e8920be13d6bdaf3345ff49132f (diff) | |
cxl: Add Get Supported Features command for kernel usage
CXL spec r3.2 8.2.9.6.1 Get Supported Features (Opcode 0500h)
The command retrieve the list of supported device-specific features
(identified by UUID) and general information about each Feature.
The driver will retrieve the Feature entries in order to make checks and
provide information for the Get Feature and Set Feature command. One of
the main piece of information retrieved are the effects a Set Feature
command would have for a particular feature. The retrieved Feature
entries are stored in the cxl_mailbox context.
The setup of Features is initiated via devm_cxl_setup_features() during the
pci probe function before the cxl_memdev is enumerated.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Tested-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250220194438.2281088-3-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'drivers/cxl/Kconfig')
| -rw-r--r-- | drivers/cxl/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig index 876469e23f7a..ad2e796e4ac6 100644 --- a/drivers/cxl/Kconfig +++ b/drivers/cxl/Kconfig @@ -102,6 +102,17 @@ config CXL_MEM If unsure say 'm'. +config CXL_FEATURES + bool "CXL: Features" + depends on CXL_PCI + help + Enable support for CXL Features. A CXL device that includes a mailbox + supports commands that allows listing, getting, and setting of + optionally defined features such as memory sparing or post package + sparing. Vendors may define custom features for the device. + + If unsure say 'n' + config CXL_PORT default CXL_BUS tristate |