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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef TARGET_CORE_RD_H3#define TARGET_CORE_RD_H4 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 6553614#define RD_DEVICE_QUEUE_DEPTH 3215#define RD_MAX_DEVICE_QUEUE_DEPTH 12816#define RD_BLOCKSIZE 51217 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 0x0130#define RDF_NULLIO 0x0231#define RDF_DUMMY 0x0432 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 */58