/* SPDX-License-Identifier: GPL-2.0 */ #ifndef TARGET_CORE_RD_H #define TARGET_CORE_RD_H #include <linux/module.h> #include <linux/types.h> #include <target/target_core_base.h> #define RD_HBA_VERSION "v4.0" #define RD_MCP_VERSION "4.0" /* Largest piece of memory kmalloc can allocate */ #define RD_MAX_ALLOCATION_SIZE 65536 #define RD_DEVICE_QUEUE_DEPTH 32 #define RD_MAX_DEVICE_QUEUE_DEPTH 128 #define RD_BLOCKSIZE 512 /* Used in target_core_init_configfs() for virtual LUN 0 access */ int __init rd_module_init(void); void rd_module_exit(void); struct rd_dev_sg_table { u32 page_start_offset; u32 page_end_offset; u32 rd_sg_count; struct scatterlist *sg_table; } ____cacheline_aligned; #define RDF_HAS_PAGE_COUNT 0x01 #define RDF_NULLIO 0x02 #define RDF_DUMMY 0x04 struct rd_dev { struct se_device dev; u32 rd_flags; /* Unique Ramdisk Device ID in Ramdisk HBA */ u32 rd_dev_id; /* Total page count for ramdisk device */ u32 rd_page_count; /* Number of SG tables in sg_table_array */ u32 sg_table_count; /* Number of SG tables in sg_prot_array */ u32 sg_prot_count; /* Array of rd_dev_sg_table_t containing scatterlists */ struct rd_dev_sg_table *sg_table_array; /* Array of rd_dev_sg_table containing protection scatterlists */ struct rd_dev_sg_table *sg_prot_array; /* Ramdisk HBA device is connected to */ struct rd_host *rd_host; } ____cacheline_aligned; struct rd_host { u32 rd_host_dev_id_count; u32 rd_host_id; /* Unique Ramdisk Host ID */ } ____cacheline_aligned; #endif /* TARGET_CORE_RD_H */