root/drivers/target/target_core_xcopy.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <target/target_core_base.h>
   3 
   4 #define XCOPY_HDR_LEN                   16
   5 #define XCOPY_TARGET_DESC_LEN           32
   6 #define XCOPY_SEGMENT_DESC_LEN          28
   7 #define XCOPY_NAA_IEEE_REGEX_LEN        16
   8 #define XCOPY_MAX_SECTORS               1024
   9 
  10 /*
  11  * SPC4r37 6.4.6.1
  12  * Table 150 — CSCD descriptor ID values
  13  */
  14 #define XCOPY_CSCD_DESC_ID_LIST_OFF_MAX 0x07FF
  15 
  16 enum xcopy_origin_list {
  17         XCOL_SOURCE_RECV_OP = 0x01,
  18         XCOL_DEST_RECV_OP = 0x02,
  19 };
  20 
  21 struct xcopy_pt_cmd;
  22 
  23 struct xcopy_op {
  24         int op_origin;
  25 
  26         struct se_cmd *xop_se_cmd;
  27         struct se_device *src_dev;
  28         unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  29         struct se_device *dst_dev;
  30         unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  31         unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
  32 
  33         sector_t src_lba;
  34         sector_t dst_lba;
  35         unsigned short stdi;
  36         unsigned short dtdi;
  37         unsigned short nolb;
  38         unsigned int dbl;
  39 
  40         struct xcopy_pt_cmd *src_pt_cmd;
  41         struct xcopy_pt_cmd *dst_pt_cmd;
  42 
  43         u32 xop_data_nents;
  44         struct scatterlist *xop_data_sg;
  45         struct work_struct xop_work;
  46 };
  47 
  48 /*
  49  * Receive Copy Results Sevice Actions
  50  */
  51 #define RCR_SA_COPY_STATUS              0x00
  52 #define RCR_SA_RECEIVE_DATA             0x01
  53 #define RCR_SA_OPERATING_PARAMETERS     0x03
  54 #define RCR_SA_FAILED_SEGMENT_DETAILS   0x04
  55 
  56 /*
  57  * Receive Copy Results defs for Operating Parameters
  58  */
  59 #define RCR_OP_MAX_TARGET_DESC_COUNT    0x2
  60 #define RCR_OP_MAX_SG_DESC_COUNT        0x1
  61 #define RCR_OP_MAX_DESC_LIST_LEN        1024
  62 #define RCR_OP_MAX_SEGMENT_LEN          268435456 /* 256 MB */
  63 #define RCR_OP_TOTAL_CONCURR_COPIES     0x1 /* Must be <= 16384 */
  64 #define RCR_OP_MAX_CONCURR_COPIES       0x1 /* Must be <= 255 */
  65 #define RCR_OP_DATA_SEG_GRAN_LOG2       9 /* 512 bytes in log 2 */
  66 #define RCR_OP_INLINE_DATA_GRAN_LOG2    9 /* 512 bytes in log 2 */
  67 #define RCR_OP_HELD_DATA_GRAN_LOG2      9 /* 512 bytes in log 2 */
  68 
  69 extern int target_xcopy_setup_pt(void);
  70 extern void target_xcopy_release_pt(void);
  71 extern sense_reason_t target_do_xcopy(struct se_cmd *);
  72 extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);