/* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright(c) 2020 Intel Corporation. */ #ifndef __CXL_CORE_H__ #define __CXL_CORE_H__ extern const struct device_type cxl_nvdimm_bridge_type; extern const struct device_type cxl_nvdimm_type; extern struct attribute_group cxl_base_attribute_group; #ifdef CONFIG_CXL_REGION extern struct device_attribute dev_attr_create_pmem_region; extern struct device_attribute dev_attr_delete_region; extern struct device_attribute dev_attr_region; extern const struct device_type cxl_pmem_region_type; extern const struct device_type cxl_region_type; void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled); #define CXL_REGION_ATTR(x) (&dev_attr_##x.attr) #define CXL_REGION_TYPE(x) (&cxl_region_type) #define SET_CXL_REGION_ATTR(x) (&dev_attr_##x.attr), #define CXL_PMEM_REGION_TYPE(x) (&cxl_pmem_region_type) int cxl_region_init(void); void cxl_region_exit(void); #else static inline void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled) { } static inline int cxl_region_init(void) { return 0; } static inline void cxl_region_exit(void) { } #define CXL_REGION_ATTR(x) NULL #define CXL_REGION_TYPE(x) NULL #define SET_CXL_REGION_ATTR(x) #define CXL_PMEM_REGION_TYPE(x) NULL #endif struct cxl_send_command; struct cxl_mem_query_commands; int cxl_query_cmd(struct cxl_memdev *cxlmd, struct cxl_mem_query_commands __user *q); int cxl_send_cmd(struct cxl_memdev *cxlmd, struct cxl_send_command __user *s); void __iomem *devm_cxl_iomap_block(struct device *dev, resource_size_t addr, resource_size_t length); struct dentry *cxl_debugfs_create_dir(const char *dir); int cxl_dpa_set_mode(struct cxl_endpoint_decoder *cxled, enum cxl_decoder_mode mode); int cxl_dpa_alloc(struct cxl_endpoint_decoder *cxled, unsigned long long size); int cxl_dpa_free(struct cxl_endpoint_decoder *cxled); resource_size_t cxl_dpa_size(struct cxl_endpoint_decoder *cxled); resource_size_t cxl_dpa_resource_start(struct cxl_endpoint_decoder *cxled); extern struct rw_semaphore cxl_dpa_rwsem; bool is_switch_decoder(struct device *dev); struct cxl_switch_decoder *to_cxl_switch_decoder(struct device *dev); static inline struct cxl_ep *cxl_ep_load(struct cxl_port *port, struct cxl_memdev *cxlmd) { if (!port) return NULL; return xa_load(&port->endpoints, (unsigned long)&cxlmd->dev); } int cxl_memdev_init(void); void cxl_memdev_exit(void); void cxl_mbox_init(void); #endif /* __CXL_CORE_H__ */