1 #ifndef TARGET_CORE_RD_H 2 #define TARGET_CORE_RD_H 3 4 #define RD_HBA_VERSION "v4.0" 5 #define RD_DR_VERSION "4.0" 6 #define RD_MCP_VERSION "4.0" 7 8 /* Largest piece of memory kmalloc can allocate */ 9 #define RD_MAX_ALLOCATION_SIZE 65536 10 #define RD_DEVICE_QUEUE_DEPTH 32 11 #define RD_MAX_DEVICE_QUEUE_DEPTH 128 12 #define RD_BLOCKSIZE 512 13 #define RD_MAX_SECTORS 1024 14 15 /* Used in target_core_init_configfs() for virtual LUN 0 access */ 16 int __init rd_module_init(void); 17 void rd_module_exit(void); 18 19 #define RRF_EMULATE_CDB 0x01 20 #define RRF_GOT_LBA 0x02 21 22 struct rd_request { 23 struct se_task rd_task; 24 25 /* Offset from start of page */ 26 u32 rd_offset; 27 /* Starting page in Ramdisk for request */ 28 u32 rd_page; 29 /* Total number of pages needed for request */ 30 u32 rd_page_count; 31 /* Scatterlist count */ 32 u32 rd_size; 33 } ____cacheline_aligned; 34 35 struct rd_dev_sg_table { 36 u32 page_start_offset; 37 u32 page_end_offset; 38 u32 rd_sg_count; 39 struct scatterlist *sg_table; 40 } ____cacheline_aligned; 41 42 #define RDF_HAS_PAGE_COUNT 0x01 43 44 struct rd_dev { 45 int rd_direct; 46 u32 rd_flags; 47 /* Unique Ramdisk Device ID in Ramdisk HBA */ 48 u32 rd_dev_id; 49 /* Total page count for ramdisk device */ 50 u32 rd_page_count; 51 /* Number of SG tables in sg_table_array */ 52 u32 sg_table_count; 53 u32 rd_queue_depth; 54 /* Array of rd_dev_sg_table_t containing scatterlists */ 55 struct rd_dev_sg_table *sg_table_array; 56 /* Ramdisk HBA device is connected to */ 57 struct rd_host *rd_host; 58 } ____cacheline_aligned; 59 60 struct rd_host { 61 u32 rd_host_dev_id_count; 62 u32 rd_host_id; /* Unique Ramdisk Host ID */ 63 } ____cacheline_aligned; 64 65 #endif /* TARGET_CORE_RD_H */ 66