target_core_rd.h

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#ifndef TARGET_CORE_RD_H
#define TARGET_CORE_RD_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

struct rd_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;
    /* Array of rd_dev_sg_table_t containing scatterlists */
    struct rd_dev_sg_table *sg_table_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 */