1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef TARGET_CORE_RD_H |
3 | #define TARGET_CORE_RD_H |
4 | |
5 | #include <linux/module.h> |
6 | #include <linux/types.h> |
7 | #include <target/target_core_base.h> |
8 | |
9 | #define RD_HBA_VERSION "v4.0" |
10 | #define RD_MCP_VERSION "4.0" |
11 | |
12 | /* Largest piece of memory kmalloc can allocate */ |
13 | #define RD_MAX_ALLOCATION_SIZE 65536 |
14 | #define RD_DEVICE_QUEUE_DEPTH 32 |
15 | #define RD_MAX_DEVICE_QUEUE_DEPTH 128 |
16 | #define RD_BLOCKSIZE 512 |
17 | |
18 | /* Used in target_core_init_configfs() for virtual LUN 0 access */ |
19 | int __init rd_module_init(void); |
20 | void rd_module_exit(void); |
21 | |
22 | struct rd_dev_sg_table { |
23 | u32 page_start_offset; |
24 | u32 page_end_offset; |
25 | u32 rd_sg_count; |
26 | struct scatterlist *sg_table; |
27 | } ____cacheline_aligned; |
28 | |
29 | #define RDF_HAS_PAGE_COUNT 0x01 |
30 | #define RDF_NULLIO 0x02 |
31 | #define RDF_DUMMY 0x04 |
32 | |
33 | struct rd_dev { |
34 | struct se_device dev; |
35 | u32 rd_flags; |
36 | /* Unique Ramdisk Device ID in Ramdisk HBA */ |
37 | u32 rd_dev_id; |
38 | /* Total page count for ramdisk device */ |
39 | u32 rd_page_count; |
40 | /* Number of SG tables in sg_table_array */ |
41 | u32 sg_table_count; |
42 | /* Number of SG tables in sg_prot_array */ |
43 | u32 sg_prot_count; |
44 | /* Array of rd_dev_sg_table_t containing scatterlists */ |
45 | struct rd_dev_sg_table *sg_table_array; |
46 | /* Array of rd_dev_sg_table containing protection scatterlists */ |
47 | struct rd_dev_sg_table *sg_prot_array; |
48 | /* Ramdisk HBA device is connected to */ |
49 | struct rd_host *rd_host; |
50 | } ____cacheline_aligned; |
51 | |
52 | struct rd_host { |
53 | u32 rd_host_dev_id_count; |
54 | u32 rd_host_id; /* Unique Ramdisk Host ID */ |
55 | } ____cacheline_aligned; |
56 | |
57 | #endif /* TARGET_CORE_RD_H */ |
58 | |