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_BYTES			16777216 /* 16 MB */
 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
16enum xcopy_origin_list {
17	XCOL_SOURCE_RECV_OP = 0x01,
18	XCOL_DEST_RECV_OP = 0x02,
19};
20
21struct xcopy_op {
22	int op_origin;
23
24	struct se_cmd *xop_se_cmd;
25	struct se_device *src_dev;
26	unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
27	struct se_device *dst_dev;
28	unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
29	unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
30	struct percpu_ref *remote_lun_ref;
31
32	sector_t src_lba;
33	sector_t dst_lba;
34	unsigned short stdi;
35	unsigned short dtdi;
36	unsigned short nolb;
37
38	u32 xop_data_bytes;
39	u32 xop_data_nents;
40	struct scatterlist *xop_data_sg;
41	struct work_struct xop_work;
42};
43
44/*
45 * Receive Copy Results Sevice Actions
46 */
47#define RCR_SA_COPY_STATUS		0x00
48#define RCR_SA_RECEIVE_DATA		0x01
49#define RCR_SA_OPERATING_PARAMETERS	0x03
50#define RCR_SA_FAILED_SEGMENT_DETAILS	0x04
51
52/*
53 * Receive Copy Results defs for Operating Parameters
54 */
55#define RCR_OP_MAX_TARGET_DESC_COUNT	0x2
56#define RCR_OP_MAX_SG_DESC_COUNT	0x1
57#define RCR_OP_MAX_DESC_LIST_LEN	1024
58#define RCR_OP_MAX_SEGMENT_LEN		268435456 /* 256 MB */
59#define RCR_OP_TOTAL_CONCURR_COPIES	0x1 /* Must be <= 16384 */
60#define RCR_OP_MAX_CONCURR_COPIES	0x1 /* Must be <= 255 */
61#define RCR_OP_DATA_SEG_GRAN_LOG2	9 /* 512 bytes in log 2 */
62#define RCR_OP_INLINE_DATA_GRAN_LOG2	9 /* 512 bytes in log 2 */
63#define RCR_OP_HELD_DATA_GRAN_LOG2	9 /* 512 bytes in log 2 */
64
65extern int target_xcopy_setup_pt(void);
66extern void target_xcopy_release_pt(void);
67extern sense_reason_t target_do_xcopy(struct se_cmd *);
68extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);