drivers/target/target_core_xcopy.h

   1 #include <target/target_core_base.h>
   2
   3 #define XCOPY_HDR_LEN                   16
   4 #define XCOPY_TARGET_DESC_LEN           32
   5 #define XCOPY_SEGMENT_DESC_LEN          28
   6 #define XCOPY_NAA_IEEE_REGEX_LEN        16
   7 #define XCOPY_MAX_SECTORS               1024
   8
   9 /*
  10  * SPC4r37 6.4.6.1
  11  * Table 150 — CSCD descriptor ID values
  12  */
  13 #define XCOPY_CSCD_DESC_ID_LIST_OFF_MAX 0x07FF
  14
  15 enum xcopy_origin_list {
  16         XCOL_SOURCE_RECV_OP = 0x01,
  17         XCOL_DEST_RECV_OP = 0x02,
  18 };
  19
  20 struct xcopy_pt_cmd;
  21
  22 struct xcopy_op {
  23         int op_origin;
  24
  25         struct se_cmd *xop_se_cmd;
  26         struct se_device *src_dev;
  27         unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  28         struct se_device *dst_dev;
  29         unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  30         unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  31
  32         sector_t src_lba;
  33         sector_t dst_lba;
  34         unsigned short stdi;
  35         unsigned short dtdi;
  36         unsigned short nolb;
  37         unsigned int dbl;
  38
  39         struct xcopy_pt_cmd *src_pt_cmd;
  40         struct xcopy_pt_cmd *dst_pt_cmd;
  41
  42         u32 xop_data_nents;
  43         struct scatterlist *xop_data_sg;
  44         struct work_struct xop_work;
  45 };
  46
  47 /*
  48  * Receive Copy Results Sevice Actions
  49  */
  50 #define RCR_SA_COPY_STATUS              0x00
  51 #define RCR_SA_RECEIVE_DATA             0x01
  52 #define RCR_SA_OPERATING_PARAMETERS     0x03
  53 #define RCR_SA_FAILED_SEGMENT_DETAILS   0x04
  54
  55 /*
  56  * Receive Copy Results defs for Operating Parameters
  57  */
  58 #define RCR_OP_MAX_TARGET_DESC_COUNT    0x2
  59 #define RCR_OP_MAX_SG_DESC_COUNT        0x1
  60 #define RCR_OP_MAX_DESC_LIST_LEN        1024
  61 #define RCR_OP_MAX_SEGMENT_LEN          268435456 /* 256 MB */
  62 #define RCR_OP_TOTAL_CONCURR_COPIES     0x1 /* Must be <= 16384 */
  63 #define RCR_OP_MAX_CONCURR_COPIES       0x1 /* Must be <= 255 */
  64 #define RCR_OP_DATA_SEG_GRAN_LOG2       9 /* 512 bytes in log 2 */
  65 #define RCR_OP_INLINE_DATA_GRAN_LOG2    9 /* 512 bytes in log 2 */
  66 #define RCR_OP_HELD_DATA_GRAN_LOG2      9 /* 512 bytes in log 2 */
  67
  68 extern int target_xcopy_setup_pt(void);
  69 extern void target_xcopy_release_pt(void);
  70 extern sense_reason_t target_do_xcopy(struct se_cmd *);
  71 extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);