tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */
16int __init rd_module_init(void);
17void rd_module_exit(void);
18
19#define RRF_EMULATE_CDB 0x01
20#define RRF_GOT_LBA 0x02
21
22struct 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
35struct 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
44struct 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
60struct 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 */