diff options
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 46d3f173a700..75674400cc8d 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -419,6 +419,25 @@ struct cxl_nvdimm { struct device dev; struct cxl_memdev *cxlmd; struct cxl_nvdimm_bridge *bridge; + struct cxl_pmem_region *region; +}; + +struct cxl_pmem_region_mapping { + struct cxl_memdev *cxlmd; + struct cxl_nvdimm *cxl_nvd; + u64 start; + u64 size; + int position; +}; + +struct cxl_pmem_region { + struct device dev; + struct cxl_region *cxlr; + struct nd_region *nd_region; + struct cxl_nvdimm_bridge *bridge; + struct range hpa_range; + int nr_mappings; + struct cxl_pmem_region_mapping mapping[]; }; /** @@ -601,6 +620,7 @@ void cxl_driver_unregister(struct cxl_driver *cxl_drv); #define CXL_DEVICE_ROOT 4 #define CXL_DEVICE_MEMORY_EXPANDER 5 #define CXL_DEVICE_REGION 6 +#define CXL_DEVICE_PMEM_REGION 7 #define MODULE_ALIAS_CXL(type) MODULE_ALIAS("cxl:t" __stringify(type) "*") #define CXL_MODALIAS_FMT "cxl:t%d" @@ -612,7 +632,21 @@ struct cxl_nvdimm *to_cxl_nvdimm(struct device *dev); bool is_cxl_nvdimm(struct device *dev); bool is_cxl_nvdimm_bridge(struct device *dev); int devm_cxl_add_nvdimm(struct device *host, struct cxl_memdev *cxlmd); -struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_nvdimm *cxl_nvd); +struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct device *dev); + +#ifdef CONFIG_CXL_REGION +bool is_cxl_pmem_region(struct device *dev); +struct cxl_pmem_region *to_cxl_pmem_region(struct device *dev); +#else +static inline bool is_cxl_pmem_region(struct device *dev) +{ + return false; +} +static inline struct cxl_pmem_region *to_cxl_pmem_region(struct device *dev) +{ + return NULL; +} +#endif /* * Unit test builds overrides this to __weak, find the 'strong' version |