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 extern const struct device_type cxl_pmu_type; 10 11 extern struct attribute_group cxl_base_attribute_group; 12 13 #ifdef CONFIG_CXL_REGION 14 extern struct device_attribute dev_attr_create_pmem_region; 15 extern struct device_attribute dev_attr_create_ram_region; 16 extern struct device_attribute dev_attr_delete_region; 17 extern struct device_attribute dev_attr_region; 18 extern const struct device_type cxl_pmem_region_type; 19 extern const struct device_type cxl_dax_region_type; 20 extern const struct device_type cxl_region_type; 21 void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled); 22 #define CXL_REGION_ATTR(x) (&dev_attr_##x.attr) 23 #define CXL_REGION_TYPE(x) (&cxl_region_type) 24 #define SET_CXL_REGION_ATTR(x) (&dev_attr_##x.attr), 25 #define CXL_PMEM_REGION_TYPE(x) (&cxl_pmem_region_type) 26 #define CXL_DAX_REGION_TYPE(x) (&cxl_dax_region_type) 27 int cxl_region_init(void); 28 void cxl_region_exit(void); 29 int cxl_get_poison_by_endpoint(struct cxl_port *port); 30 #else 31 static inline int cxl_get_poison_by_endpoint(struct cxl_port *port) 32 { 33 return 0; 34 } 35 static inline void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled) 36 { 37 } 38 static inline int cxl_region_init(void) 39 { 40 return 0; 41 } 42 static inline void cxl_region_exit(void) 43 { 44 } 45 #define CXL_REGION_ATTR(x) NULL 46 #define CXL_REGION_TYPE(x) NULL 47 #define SET_CXL_REGION_ATTR(x) 48 #define CXL_PMEM_REGION_TYPE(x) NULL 49 #define CXL_DAX_REGION_TYPE(x) NULL 50 #endif 51 52 struct cxl_send_command; 53 struct cxl_mem_query_commands; 54 int cxl_query_cmd(struct cxl_memdev *cxlmd, 55 struct cxl_mem_query_commands __user *q); 56 int cxl_send_cmd(struct cxl_memdev *cxlmd, struct cxl_send_command __user *s); 57 void __iomem *devm_cxl_iomap_block(struct device *dev, resource_size_t addr, 58 resource_size_t length); 59 60 struct dentry *cxl_debugfs_create_dir(const char *dir); 61 int cxl_dpa_set_mode(struct cxl_endpoint_decoder *cxled, 62 enum cxl_decoder_mode mode); 63 int cxl_dpa_alloc(struct cxl_endpoint_decoder *cxled, unsigned long long size); 64 int cxl_dpa_free(struct cxl_endpoint_decoder *cxled); 65 resource_size_t cxl_dpa_size(struct cxl_endpoint_decoder *cxled); 66 resource_size_t cxl_dpa_resource_start(struct cxl_endpoint_decoder *cxled); 67 68 enum cxl_rcrb { 69 CXL_RCRB_DOWNSTREAM, 70 CXL_RCRB_UPSTREAM, 71 }; 72 struct cxl_rcrb_info; 73 resource_size_t __rcrb_to_component(struct device *dev, 74 struct cxl_rcrb_info *ri, 75 enum cxl_rcrb which); 76 u16 cxl_rcrb_to_aer(struct device *dev, resource_size_t rcrb); 77 78 extern struct rw_semaphore cxl_dpa_rwsem; 79 extern struct rw_semaphore cxl_region_rwsem; 80 81 int cxl_memdev_init(void); 82 void cxl_memdev_exit(void); 83 void cxl_mbox_init(void); 84 85 enum cxl_poison_trace_type { 86 CXL_POISON_TRACE_LIST, 87 CXL_POISON_TRACE_INJECT, 88 CXL_POISON_TRACE_CLEAR, 89 }; 90 91 #endif /* __CXL_CORE_H__ */ 92