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Diffstat (limited to 'drivers/target/target_core_rd.h')
-rw-r--r--drivers/target/target_core_rd.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/target/target_core_rd.h b/drivers/target/target_core_rd.h
new file mode 100644
index 000000000000..13badfbaf9c0
--- /dev/null
+++ b/drivers/target/target_core_rd.h
@@ -0,0 +1,73 @@
+#ifndef TARGET_CORE_RD_H
+#define TARGET_CORE_RD_H
+
+#define RD_HBA_VERSION "v4.0"
+#define RD_DR_VERSION "4.0"
+#define RD_MCP_VERSION "4.0"
+
+/* Largest piece of memory kmalloc can allocate */
+#define RD_MAX_ALLOCATION_SIZE 65536
+/* Maximum queuedepth for the Ramdisk HBA */
+#define RD_HBA_QUEUE_DEPTH 256
+#define RD_DEVICE_QUEUE_DEPTH 32
+#define RD_MAX_DEVICE_QUEUE_DEPTH 128
+#define RD_BLOCKSIZE 512
+#define RD_MAX_SECTORS 1024
+
+extern struct kmem_cache *se_mem_cache;
+
+/* Used in target_core_init_configfs() for virtual LUN 0 access */
+int __init rd_module_init(void);
+void rd_module_exit(void);
+
+#define RRF_EMULATE_CDB 0x01
+#define RRF_GOT_LBA 0x02
+
+struct rd_request {
+ struct se_task rd_task;
+
+ /* SCSI CDB from iSCSI Command PDU */
+ unsigned char rd_scsi_cdb[TCM_MAX_COMMAND_SIZE];
+ /* Offset from start of page */
+ u32 rd_offset;
+ /* Starting page in Ramdisk for request */
+ u32 rd_page;
+ /* Total number of pages needed for request */
+ u32 rd_page_count;
+ /* Scatterlist count */
+ u32 rd_size;
+ /* Ramdisk device */
+ struct rd_dev *rd_dev;
+} ____cacheline_aligned;
+
+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 {
+ int rd_direct;
+ 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;
+ u32 rd_queue_depth;
+ /* 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 */