drivers/target/target_core_xcopy.h

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