1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef TARGET_CORE_RD_H
3 #define TARGET_CORE_RD_H
5 #include <linux/module.h>
6 #include <linux/types.h>
7 #include <target/target_core_base.h>
9 #define RD_HBA_VERSION "v4.0"
10 #define RD_MCP_VERSION "4.0"
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
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);
22 struct rd_dev_sg_table {
23 u32 page_start_offset;
26 struct scatterlist *sg_table;
27 } ____cacheline_aligned;
29 #define RDF_HAS_PAGE_COUNT 0x01
30 #define RDF_NULLIO 0x02
31 #define RDF_DUMMY 0x04
36 /* Unique Ramdisk Device ID in Ramdisk HBA */
38 /* Total page count for ramdisk device */
40 /* Number of SG tables in sg_table_array */
42 /* Number of SG tables in sg_prot_array */
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;
53 u32 rd_host_dev_id_count;
54 u32 rd_host_id; /* Unique Ramdisk Host ID */
55 } ____cacheline_aligned;
57 #endif /* TARGET_CORE_RD_H */