drivers/target/target_core_xcopy.h

   1 #include <target/target_core_base.h>
   2
   3 #define XCOPY_TARGET_DESC_LEN           32
   4 #define XCOPY_SEGMENT_DESC_LEN          28
   5 #define XCOPY_NAA_IEEE_REGEX_LEN        16
   6 #define XCOPY_MAX_SECTORS               1024
   7
   8 enum xcopy_origin_list {
   9         XCOL_SOURCE_RECV_OP = 0x01,
  10         XCOL_DEST_RECV_OP = 0x02,
  11 };
  12
  13 struct xcopy_pt_cmd;
  14
  15 struct xcopy_op {
  16         int op_origin;
  17
  18         struct se_cmd *xop_se_cmd;
  19         struct se_device *src_dev;
  20         unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  21         struct se_device *dst_dev;
  22         unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  23         unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  24
  25         sector_t src_lba;
  26         sector_t dst_lba;
  27         unsigned short stdi;
  28         unsigned short dtdi;
  29         unsigned short nolb;
  30         unsigned int dbl;
  31
  32         struct xcopy_pt_cmd *src_pt_cmd;
  33         struct xcopy_pt_cmd *dst_pt_cmd;
  34
  35         u32 xop_data_nents;
  36         struct scatterlist *xop_data_sg;
  37         struct work_struct xop_work;
  38 };
  39
  40 /*
  41  * Receive Copy Results Sevice Actions
  42  */
  43 #define RCR_SA_COPY_STATUS              0x00
  44 #define RCR_SA_RECEIVE_DATA             0x01
  45 #define RCR_SA_OPERATING_PARAMETERS     0x03
  46 #define RCR_SA_FAILED_SEGMENT_DETAILS   0x04
  47
  48 /*
  49  * Receive Copy Results defs for Operating Parameters
  50  */
  51 #define RCR_OP_MAX_TARGET_DESC_COUNT    0x2
  52 #define RCR_OP_MAX_SG_DESC_COUNT        0x1
  53 #define RCR_OP_MAX_DESC_LIST_LEN        1024
  54 #define RCR_OP_MAX_SEGMENT_LEN          268435456 /* 256 MB */
  55 #define RCR_OP_TOTAL_CONCURR_COPIES     0x1 /* Must be <= 16384 */
  56 #define RCR_OP_MAX_CONCURR_COPIES       0x1 /* Must be <= 255 */
  57 #define RCR_OP_DATA_SEG_GRAN_LOG2       9 /* 512 bytes in log 2 */
  58 #define RCR_OP_INLINE_DATA_GRAN_LOG2    9 /* 512 bytes in log 2 */
  59 #define RCR_OP_HELD_DATA_GRAN_LOG2      9 /* 512 bytes in log 2 */
  60
  61 extern int target_xcopy_setup_pt(void);
  62 extern void target_xcopy_release_pt(void);
  63 extern sense_reason_t target_do_xcopy(struct se_cmd *);
  64 extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);