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