1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright(c) 2020 Intel Corporation. */ 3 4 #ifndef __CXL_CORE_H__ 5 #define __CXL_CORE_H__ 6 7 extern const struct device_type cxl_nvdimm_bridge_type; 8 extern const struct device_type cxl_nvdimm_type; 9 10 extern struct attribute_group cxl_base_attribute_group; 11 12 #ifdef CONFIG_CXL_REGION 13 extern struct device_attribute dev_attr_create_pmem_region; 14 extern struct device_attribute dev_attr_delete_region; 15 extern struct device_attribute dev_attr_region; 16 extern const struct device_type cxl_pmem_region_type; 17 extern const struct device_type cxl_region_type; 18 void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled); 19 #define CXL_REGION_ATTR(x) (&dev_attr_##x.attr) 20 #define CXL_REGION_TYPE(x) (&cxl_region_type) 21 #define SET_CXL_REGION_ATTR(x) (&dev_attr_##x.attr), 22 #define CXL_PMEM_REGION_TYPE(x) (&cxl_pmem_region_type) 23 int cxl_region_init(void); 24 void cxl_region_exit(void); 25 #else 26 static inline void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled) 27 { 28 } 29 static inline int cxl_region_init(void) 30 { 31 return 0; 32 } 33 static inline void cxl_region_exit(void) 34 { 35 } 36 #define CXL_REGION_ATTR(x) NULL 37 #define CXL_REGION_TYPE(x) NULL 38 #define SET_CXL_REGION_ATTR(x) 39 #define CXL_PMEM_REGION_TYPE(x) NULL 40 #endif 41 42 struct cxl_send_command; 43 struct cxl_mem_query_commands; 44 int cxl_query_cmd(struct cxl_memdev *cxlmd, 45 struct cxl_mem_query_commands __user *q); 46 int cxl_send_cmd(struct cxl_memdev *cxlmd, struct cxl_send_command __user *s); 47 void __iomem *devm_cxl_iomap_block(struct device *dev, resource_size_t addr, 48 resource_size_t length); 49 50 struct dentry *cxl_debugfs_create_dir(const char *dir); 51 int cxl_dpa_set_mode(struct cxl_endpoint_decoder *cxled, 52 enum cxl_decoder_mode mode); 53 int cxl_dpa_alloc(struct cxl_endpoint_decoder *cxled, unsigned long long size); 54 int cxl_dpa_free(struct cxl_endpoint_decoder *cxled); 55 resource_size_t cxl_dpa_size(struct cxl_endpoint_decoder *cxled); 56 resource_size_t cxl_dpa_resource_start(struct cxl_endpoint_decoder *cxled); 57 extern struct rw_semaphore cxl_dpa_rwsem; 58 59 bool is_switch_decoder(struct device *dev); 60 struct cxl_switch_decoder *to_cxl_switch_decoder(struct device *dev); 61 62 int cxl_memdev_init(void); 63 void cxl_memdev_exit(void); 64 void cxl_mbox_init(void); 65 66 #endif /* __CXL_CORE_H__ */ 67