LXR linux/drivers/target/target_core

   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
  15enum xcopy_origin_list {
  16        XCOL_SOURCE_RECV_OP = 0x01,
  17        XCOL_DEST_RECV_OP = 0x02,
  18};
  19
  20struct xcopy_pt_cmd;
  21
  22struct 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
  68extern int target_xcopy_setup_pt(void);
  69extern void target_xcopy_release_pt(void);
  70extern sense_reason_t target_do_xcopy(struct se_cmd *);
  71extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);
  72