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 */
19int __init rd_module_init(void);
20void rd_module_exit(void);
21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
22struct 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
33struct 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
52struct 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 */

 
 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	/* 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} ____cacheline_aligned;
36
37struct rd_dev_sg_table {
38	u32		page_start_offset;
39	u32		page_end_offset;
40	u32		rd_sg_count;
41	struct scatterlist *sg_table;
42} ____cacheline_aligned;
43
44#define RDF_HAS_PAGE_COUNT	0x01
 
 
45
46struct rd_dev {
47	int		rd_direct;
48	u32		rd_flags;
49	/* Unique Ramdisk Device ID in Ramdisk HBA */
50	u32		rd_dev_id;
51	/* Total page count for ramdisk device */
52	u32		rd_page_count;
53	/* Number of SG tables in sg_table_array */
54	u32		sg_table_count;
55	u32		rd_queue_depth;
 
56	/* Array of rd_dev_sg_table_t containing scatterlists */
57	struct rd_dev_sg_table *sg_table_array;
 
 
58	/* Ramdisk HBA device is connected to */
59	struct rd_host *rd_host;
60} ____cacheline_aligned;
61
62struct rd_host {
63	u32		rd_host_dev_id_count;
64	u32		rd_host_id;		/* Unique Ramdisk Host ID */
65} ____cacheline_aligned;
66
67#endif /* TARGET_CORE_RD_H */