diff options
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 0b38ee99bddf..ea7255020808 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -295,18 +295,43 @@ struct cxl_root_decoder { struct cxl_switch_decoder cxlsd; }; +/* + * enum cxl_config_state - State machine for region configuration + * @CXL_CONFIG_IDLE: Any sysfs attribute can be written freely + * @CXL_CONFIG_ACTIVE: All targets have been added the region is now + * active + */ +enum cxl_config_state { + CXL_CONFIG_IDLE, + CXL_CONFIG_ACTIVE, +}; + +/** + * struct cxl_region_params - region settings + * @state: allow the driver to lockdown further parameter changes + * @uuid: unique id for persistent regions + * + * State transitions are protected by the cxl_region_rwsem + */ +struct cxl_region_params { + enum cxl_config_state state; + uuid_t uuid; +}; + /** * struct cxl_region - CXL region * @dev: This region's device * @id: This region's id. Id is globally unique across all regions * @mode: Endpoint decoder allocation / access mode * @type: Endpoint decoder target type + * @params: active + config params for the region */ struct cxl_region { struct device dev; int id; enum cxl_decoder_mode mode; enum cxl_decoder_type type; + struct cxl_region_params params; }; /** |