Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 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 | /* Maximum queuedepth for the Ramdisk HBA */ |
| 11 | #define RD_HBA_QUEUE_DEPTH 256 |
| 12 | #define RD_DEVICE_QUEUE_DEPTH 32 |
| 13 | #define RD_MAX_DEVICE_QUEUE_DEPTH 128 |
| 14 | #define RD_BLOCKSIZE 512 |
| 15 | #define RD_MAX_SECTORS 1024 |
| 16 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 17 | /* Used in target_core_init_configfs() for virtual LUN 0 access */ |
| 18 | int __init rd_module_init(void); |
| 19 | void rd_module_exit(void); |
| 20 | |
| 21 | #define RRF_EMULATE_CDB 0x01 |
| 22 | #define RRF_GOT_LBA 0x02 |
| 23 | |
| 24 | struct rd_request { |
| 25 | struct se_task rd_task; |
| 26 | |
| 27 | /* SCSI CDB from iSCSI Command PDU */ |
| 28 | unsigned char rd_scsi_cdb[TCM_MAX_COMMAND_SIZE]; |
| 29 | /* Offset from start of page */ |
| 30 | u32 rd_offset; |
| 31 | /* Starting page in Ramdisk for request */ |
| 32 | u32 rd_page; |
| 33 | /* Total number of pages needed for request */ |
| 34 | u32 rd_page_count; |
| 35 | /* Scatterlist count */ |
| 36 | u32 rd_size; |
| 37 | /* Ramdisk device */ |
| 38 | struct rd_dev *rd_dev; |
| 39 | } ____cacheline_aligned; |
| 40 | |
| 41 | struct rd_dev_sg_table { |
| 42 | u32 page_start_offset; |
| 43 | u32 page_end_offset; |
| 44 | u32 rd_sg_count; |
| 45 | struct scatterlist *sg_table; |
| 46 | } ____cacheline_aligned; |
| 47 | |
| 48 | #define RDF_HAS_PAGE_COUNT 0x01 |
| 49 | |
| 50 | struct rd_dev { |
| 51 | int rd_direct; |
| 52 | u32 rd_flags; |
| 53 | /* Unique Ramdisk Device ID in Ramdisk HBA */ |
| 54 | u32 rd_dev_id; |
| 55 | /* Total page count for ramdisk device */ |
| 56 | u32 rd_page_count; |
| 57 | /* Number of SG tables in sg_table_array */ |
| 58 | u32 sg_table_count; |
| 59 | u32 rd_queue_depth; |
| 60 | /* Array of rd_dev_sg_table_t containing scatterlists */ |
| 61 | struct rd_dev_sg_table *sg_table_array; |
| 62 | /* Ramdisk HBA device is connected to */ |
| 63 | struct rd_host *rd_host; |
| 64 | } ____cacheline_aligned; |
| 65 | |
| 66 | struct rd_host { |
| 67 | u32 rd_host_dev_id_count; |
| 68 | u32 rd_host_id; /* Unique Ramdisk Host ID */ |
| 69 | } ____cacheline_aligned; |
| 70 | |
| 71 | #endif /* TARGET_CORE_RD_H */ |