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c66ac9db NB |
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 | |
c66ac9db NB |
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 | ||
c66ac9db NB |
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 | /* SCSI CDB from iSCSI Command PDU */ | |
26 | unsigned char rd_scsi_cdb[TCM_MAX_COMMAND_SIZE]; | |
27 | /* Offset from start of page */ | |
28 | u32 rd_offset; | |
29 | /* Starting page in Ramdisk for request */ | |
30 | u32 rd_page; | |
31 | /* Total number of pages needed for request */ | |
32 | u32 rd_page_count; | |
33 | /* Scatterlist count */ | |
34 | u32 rd_size; | |
35 | /* Ramdisk device */ | |
36 | struct rd_dev *rd_dev; | |
37 | } ____cacheline_aligned; | |
38 | ||
39 | struct rd_dev_sg_table { | |
40 | u32 page_start_offset; | |
41 | u32 page_end_offset; | |
42 | u32 rd_sg_count; | |
43 | struct scatterlist *sg_table; | |
44 | } ____cacheline_aligned; | |
45 | ||
46 | #define RDF_HAS_PAGE_COUNT 0x01 | |
47 | ||
48 | struct rd_dev { | |
49 | int rd_direct; | |
50 | u32 rd_flags; | |
51 | /* Unique Ramdisk Device ID in Ramdisk HBA */ | |
52 | u32 rd_dev_id; | |
53 | /* Total page count for ramdisk device */ | |
54 | u32 rd_page_count; | |
55 | /* Number of SG tables in sg_table_array */ | |
56 | u32 sg_table_count; | |
57 | u32 rd_queue_depth; | |
58 | /* Array of rd_dev_sg_table_t containing scatterlists */ | |
59 | struct rd_dev_sg_table *sg_table_array; | |
60 | /* Ramdisk HBA device is connected to */ | |
61 | struct rd_host *rd_host; | |
62 | } ____cacheline_aligned; | |
63 | ||
64 | struct rd_host { | |
65 | u32 rd_host_dev_id_count; | |
66 | u32 rd_host_id; /* Unique Ramdisk Host ID */ | |
67 | } ____cacheline_aligned; | |
68 | ||
69 | #endif /* TARGET_CORE_RD_H */ |