1 #ifndef TARGET_CORE_RD_H 2 #define TARGET_CORE_RD_H 3 4 #define RD_HBA_VERSION "v4.0" 5 #define RD_MCP_VERSION "4.0" 6 7 /* Largest piece of memory kmalloc can allocate */ 8 #define RD_MAX_ALLOCATION_SIZE 65536 9 #define RD_DEVICE_QUEUE_DEPTH 32 10 #define RD_MAX_DEVICE_QUEUE_DEPTH 128 11 #define RD_BLOCKSIZE 512 12 13 /* Used in target_core_init_configfs() for virtual LUN 0 access */ 14 int __init rd_module_init(void); 15 void rd_module_exit(void); 16 17 struct rd_dev_sg_table { 18 u32 page_start_offset; 19 u32 page_end_offset; 20 u32 rd_sg_count; 21 struct scatterlist *sg_table; 22 } ____cacheline_aligned; 23 24 #define RDF_HAS_PAGE_COUNT 0x01 25 #define RDF_NULLIO 0x02 26 27 struct rd_dev { 28 struct se_device dev; 29 u32 rd_flags; 30 /* Unique Ramdisk Device ID in Ramdisk HBA */ 31 u32 rd_dev_id; 32 /* Total page count for ramdisk device */ 33 u32 rd_page_count; 34 /* Number of SG tables in sg_table_array */ 35 u32 sg_table_count; 36 /* Array of rd_dev_sg_table_t containing scatterlists */ 37 struct rd_dev_sg_table *sg_table_array; 38 /* Ramdisk HBA device is connected to */ 39 struct rd_host *rd_host; 40 } ____cacheline_aligned; 41 42 struct rd_host { 43 u32 rd_host_dev_id_count; 44 u32 rd_host_id; /* Unique Ramdisk Host ID */ 45 } ____cacheline_aligned; 46 47 #endif /* TARGET_CORE_RD_H */ 48