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