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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef TARGET_CORE_RD_H
#define TARGET_CORE_RD_H
#include <linux/module.h>
#include <linux/types.h>
#include <target/target_core_base.h>
#define RD_HBA_VERSION "v4.0"
#define RD_MCP_VERSION "4.0"
/* Largest piece of memory kmalloc can allocate */
#define RD_MAX_ALLOCATION_SIZE 65536
#define RD_DEVICE_QUEUE_DEPTH 32
#define RD_MAX_DEVICE_QUEUE_DEPTH 128
#define RD_BLOCKSIZE 512
/* Used in target_core_init_configfs() for virtual LUN 0 access */
int __init rd_module_init(void);
void rd_module_exit(void);
struct rd_dev_sg_table {
u32 page_start_offset;
u32 page_end_offset;
u32 rd_sg_count;
struct scatterlist *sg_table;
} ____cacheline_aligned;
#define RDF_HAS_PAGE_COUNT 0x01
#define RDF_NULLIO 0x02
struct rd_dev {
struct se_device dev;
u32 rd_flags;
/* Unique Ramdisk Device ID in Ramdisk HBA */
u32 rd_dev_id;
/* Total page count for ramdisk device */
u32 rd_page_count;
/* Number of SG tables in sg_table_array */
u32 sg_table_count;
/* Number of SG tables in sg_prot_array */
u32 sg_prot_count;
/* Array of rd_dev_sg_table_t containing scatterlists */
struct rd_dev_sg_table *sg_table_array;
/* Array of rd_dev_sg_table containing protection scatterlists */
struct rd_dev_sg_table *sg_prot_array;
/* Ramdisk HBA device is connected to */
struct rd_host *rd_host;
} ____cacheline_aligned;
struct rd_host {
u32 rd_host_dev_id_count;
u32 rd_host_id; /* Unique Ramdisk Host ID */
} ____cacheline_aligned;
#endif /* TARGET_CORE_RD_H */
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