[mirror_ubuntu-focal-kernel.git] / tools / lib / traceevent / plugin_scsi.c

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "event-parse.h"

typedef unsigned long sector_t;
typedef uint64_t u64;
typedef unsigned int u32;

/*
 *      SCSI opcodes
 */
#define TEST_UNIT_READY			0x00
#define REZERO_UNIT			0x01
#define REQUEST_SENSE			0x03
#define FORMAT_UNIT			0x04
#define READ_BLOCK_LIMITS		0x05
#define REASSIGN_BLOCKS			0x07
#define INITIALIZE_ELEMENT_STATUS	0x07
#define READ_6				0x08
#define WRITE_6				0x0a
#define SEEK_6				0x0b
#define READ_REVERSE			0x0f
#define WRITE_FILEMARKS			0x10
#define SPACE				0x11
#define INQUIRY				0x12
#define RECOVER_BUFFERED_DATA		0x14
#define MODE_SELECT			0x15
#define RESERVE				0x16
#define RELEASE				0x17
#define COPY				0x18
#define ERASE				0x19
#define MODE_SENSE			0x1a
#define START_STOP			0x1b
#define RECEIVE_DIAGNOSTIC		0x1c
#define SEND_DIAGNOSTIC			0x1d
#define ALLOW_MEDIUM_REMOVAL		0x1e

#define READ_FORMAT_CAPACITIES		0x23
#define SET_WINDOW			0x24
#define READ_CAPACITY			0x25
#define READ_10				0x28
#define WRITE_10			0x2a
#define SEEK_10				0x2b
#define POSITION_TO_ELEMENT		0x2b
#define WRITE_VERIFY			0x2e
#define VERIFY				0x2f
#define SEARCH_HIGH			0x30
#define SEARCH_EQUAL			0x31
#define SEARCH_LOW			0x32
#define SET_LIMITS			0x33
#define PRE_FETCH			0x34
#define READ_POSITION			0x34
#define SYNCHRONIZE_CACHE		0x35
#define LOCK_UNLOCK_CACHE		0x36
#define READ_DEFECT_DATA		0x37
#define MEDIUM_SCAN			0x38
#define COMPARE				0x39
#define COPY_VERIFY			0x3a
#define WRITE_BUFFER			0x3b
#define READ_BUFFER			0x3c
#define UPDATE_BLOCK			0x3d
#define READ_LONG			0x3e
#define WRITE_LONG			0x3f
#define CHANGE_DEFINITION		0x40
#define WRITE_SAME			0x41
#define UNMAP				0x42
#define READ_TOC			0x43
#define READ_HEADER			0x44
#define GET_EVENT_STATUS_NOTIFICATION	0x4a
#define LOG_SELECT			0x4c
#define LOG_SENSE			0x4d
#define XDWRITEREAD_10			0x53
#define MODE_SELECT_10			0x55
#define RESERVE_10			0x56
#define RELEASE_10			0x57
#define MODE_SENSE_10			0x5a
#define PERSISTENT_RESERVE_IN		0x5e
#define PERSISTENT_RESERVE_OUT		0x5f
#define VARIABLE_LENGTH_CMD		0x7f
#define REPORT_LUNS			0xa0
#define SECURITY_PROTOCOL_IN		0xa2
#define MAINTENANCE_IN			0xa3
#define MAINTENANCE_OUT			0xa4
#define MOVE_MEDIUM			0xa5
#define EXCHANGE_MEDIUM			0xa6
#define READ_12				0xa8
#define SERVICE_ACTION_OUT_12		0xa9
#define WRITE_12			0xaa
#define SERVICE_ACTION_IN_12		0xab
#define WRITE_VERIFY_12			0xae
#define VERIFY_12			0xaf
#define SEARCH_HIGH_12			0xb0
#define SEARCH_EQUAL_12			0xb1
#define SEARCH_LOW_12			0xb2
#define SECURITY_PROTOCOL_OUT		0xb5
#define READ_ELEMENT_STATUS		0xb8
#define SEND_VOLUME_TAG			0xb6
#define WRITE_LONG_2			0xea
#define EXTENDED_COPY			0x83
#define RECEIVE_COPY_RESULTS		0x84
#define ACCESS_CONTROL_IN		0x86
#define ACCESS_CONTROL_OUT		0x87
#define READ_16				0x88
#define WRITE_16			0x8a
#define READ_ATTRIBUTE			0x8c
#define WRITE_ATTRIBUTE			0x8d
#define VERIFY_16			0x8f
#define SYNCHRONIZE_CACHE_16		0x91
#define WRITE_SAME_16			0x93
#define SERVICE_ACTION_BIDIRECTIONAL	0x9d
#define SERVICE_ACTION_IN_16		0x9e
#define SERVICE_ACTION_OUT_16		0x9f
/* values for service action in */
#define	SAI_READ_CAPACITY_16		0x10
#define SAI_GET_LBA_STATUS		0x12
/* values for VARIABLE_LENGTH_CMD service action codes
 * see spc4r17 Section D.3.5, table D.7 and D.8 */
#define VLC_SA_RECEIVE_CREDENTIAL	0x1800
/* values for maintenance in */
#define MI_REPORT_IDENTIFYING_INFORMATION		0x05
#define MI_REPORT_TARGET_PGS				0x0a
#define MI_REPORT_ALIASES				0x0b
#define MI_REPORT_SUPPORTED_OPERATION_CODES		0x0c
#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS	0x0d
#define MI_REPORT_PRIORITY				0x0e
#define MI_REPORT_TIMESTAMP				0x0f
#define MI_MANAGEMENT_PROTOCOL_IN			0x10
/* value for MI_REPORT_TARGET_PGS ext header */
#define MI_EXT_HDR_PARAM_FMT		0x20
/* values for maintenance out */
#define MO_SET_IDENTIFYING_INFORMATION	0x06
#define MO_SET_TARGET_PGS		0x0a
#define MO_CHANGE_ALIASES		0x0b
#define MO_SET_PRIORITY			0x0e
#define MO_SET_TIMESTAMP		0x0f
#define MO_MANAGEMENT_PROTOCOL_OUT	0x10
/* values for variable length command */
#define XDREAD_32			0x03
#define XDWRITE_32			0x04
#define XPWRITE_32			0x06
#define XDWRITEREAD_32			0x07
#define READ_32				0x09
#define VERIFY_32			0x0a
#define WRITE_32			0x0b
#define WRITE_SAME_32			0x0d

#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])

static const char *
scsi_trace_misc(struct trace_seq *, unsigned char *, int);

static const char *
scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= ((cdb[1] & 0x1F) << 16);
	lba |=  (cdb[2] << 8);
	lba |=   cdb[3];
	txlen = cdb[4];

	trace_seq_printf(p, "lba=%llu txlen=%llu",
			 (unsigned long long)lba, (unsigned long long)txlen);
	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= (cdb[2] << 24);
	lba |= (cdb[3] << 16);
	lba |= (cdb[4] << 8);
	lba |=  cdb[5];
	txlen |= (cdb[7] << 8);
	txlen |=  cdb[8];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)txlen,
			 cdb[1] >> 5);

	if (cdb[0] == WRITE_SAME)
		trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);

	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= (cdb[2] << 24);
	lba |= (cdb[3] << 16);
	lba |= (cdb[4] << 8);
	lba |=  cdb[5];
	txlen |= (cdb[6] << 24);
	txlen |= (cdb[7] << 16);
	txlen |= (cdb[8] << 8);
	txlen |=  cdb[9];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)txlen,
			 cdb[1] >> 5);
	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= ((u64)cdb[2] << 56);
	lba |= ((u64)cdb[3] << 48);
	lba |= ((u64)cdb[4] << 40);
	lba |= ((u64)cdb[5] << 32);
	lba |= (cdb[6] << 24);
	lba |= (cdb[7] << 16);
	lba |= (cdb[8] << 8);
	lba |=  cdb[9];
	txlen |= (cdb[10] << 24);
	txlen |= (cdb[11] << 16);
	txlen |= (cdb[12] << 8);
	txlen |=  cdb[13];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)txlen,
			 cdb[1] >> 5);

	if (cdb[0] == WRITE_SAME_16)
		trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);

	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len, *cmd;
	sector_t lba = 0, txlen = 0;
	u32 ei_lbrt = 0;

	switch (SERVICE_ACTION32(cdb)) {
	case READ_32:
		cmd = "READ";
		break;
	case VERIFY_32:
		cmd = "VERIFY";
		break;
	case WRITE_32:
		cmd = "WRITE";
		break;
	case WRITE_SAME_32:
		cmd = "WRITE_SAME";
		break;
	default:
		trace_seq_printf(p, "UNKNOWN");
		goto out;
	}

	lba |= ((u64)cdb[12] << 56);
	lba |= ((u64)cdb[13] << 48);
	lba |= ((u64)cdb[14] << 40);
	lba |= ((u64)cdb[15] << 32);
	lba |= (cdb[16] << 24);
	lba |= (cdb[17] << 16);
	lba |= (cdb[18] << 8);
	lba |=  cdb[19];
	ei_lbrt |= (cdb[20] << 24);
	ei_lbrt |= (cdb[21] << 16);
	ei_lbrt |= (cdb[22] << 8);
	ei_lbrt |=  cdb[23];
	txlen |= (cdb[28] << 24);
	txlen |= (cdb[29] << 16);
	txlen |= (cdb[30] << 8);
	txlen |=  cdb[31];

	trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
			 cmd, (unsigned long long)lba,
			 (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);

	if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
		trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);

out:
	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;
	unsigned int regions = cdb[7] << 8 | cdb[8];

	trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len, *cmd;
	sector_t lba = 0;
	u32 alloc_len = 0;

	switch (SERVICE_ACTION16(cdb)) {
	case SAI_READ_CAPACITY_16:
		cmd = "READ_CAPACITY_16";
		break;
	case SAI_GET_LBA_STATUS:
		cmd = "GET_LBA_STATUS";
		break;
	default:
		trace_seq_printf(p, "UNKNOWN");
		goto out;
	}

	lba |= ((u64)cdb[2] << 56);
	lba |= ((u64)cdb[3] << 48);
	lba |= ((u64)cdb[4] << 40);
	lba |= ((u64)cdb[5] << 32);
	lba |= (cdb[6] << 24);
	lba |= (cdb[7] << 16);
	lba |= (cdb[8] << 8);
	lba |=  cdb[9];
	alloc_len |= (cdb[10] << 24);
	alloc_len |= (cdb[11] << 16);
	alloc_len |= (cdb[12] << 8);
	alloc_len |=  cdb[13];

	trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
			 (unsigned long long)lba, alloc_len);

out:
	trace_seq_putc(p, 0);
	return ret;
}

static const char *
scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
{
	switch (SERVICE_ACTION32(cdb)) {
	case READ_32:
	case VERIFY_32:
	case WRITE_32:
	case WRITE_SAME_32:
		return scsi_trace_rw32(p, cdb, len);
	default:
		return scsi_trace_misc(p, cdb, len);
	}
}

static const char *
scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
{
	const char *ret = p->buffer + p->len;

	trace_seq_printf(p, "-");
	trace_seq_putc(p, 0);
	return ret;
}

const char *
scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
{
	switch (cdb[0]) {
	case READ_6:
	case WRITE_6:
		return scsi_trace_rw6(p, cdb, len);
	case READ_10:
	case VERIFY:
	case WRITE_10:
	case WRITE_SAME:
		return scsi_trace_rw10(p, cdb, len);
	case READ_12:
	case VERIFY_12:
	case WRITE_12:
		return scsi_trace_rw12(p, cdb, len);
	case READ_16:
	case VERIFY_16:
	case WRITE_16:
	case WRITE_SAME_16:
		return scsi_trace_rw16(p, cdb, len);
	case UNMAP:
		return scsi_trace_unmap(p, cdb, len);
	case SERVICE_ACTION_IN_16:
		return scsi_trace_service_action_in(p, cdb, len);
	case VARIABLE_LENGTH_CMD:
		return scsi_trace_varlen(p, cdb, len);
	default:
		return scsi_trace_misc(p, cdb, len);
	}
}

unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
						unsigned long long *args)
{
	scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
	return 0;
}

int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
{
	pevent_register_print_function(pevent,
				       process_scsi_trace_parse_cdb,
				       PEVENT_FUNC_ARG_STRING,
				       "scsi_trace_parse_cdb",
				       PEVENT_FUNC_ARG_PTR,
				       PEVENT_FUNC_ARG_PTR,
				       PEVENT_FUNC_ARG_INT,
				       PEVENT_FUNC_ARG_VOID);
	return 0;
}

void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
{
	pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
					 "scsi_trace_parse_cdb");
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
04010929 JO	2	#include <stdio.h>
	3	#include <string.h>
	4	#include <inttypes.h>
	5	#include "event-parse.h"
	6
	7	typedef unsigned long sector_t;
	8	typedef uint64_t u64;
	9	typedef unsigned int u32;
	10
	11	/*
	12	* SCSI opcodes
	13	*/
	14	#define TEST_UNIT_READY 0x00
	15	#define REZERO_UNIT 0x01
	16	#define REQUEST_SENSE 0x03
	17	#define FORMAT_UNIT 0x04
	18	#define READ_BLOCK_LIMITS 0x05
	19	#define REASSIGN_BLOCKS 0x07
	20	#define INITIALIZE_ELEMENT_STATUS 0x07
	21	#define READ_6 0x08
	22	#define WRITE_6 0x0a
	23	#define SEEK_6 0x0b
	24	#define READ_REVERSE 0x0f
	25	#define WRITE_FILEMARKS 0x10
	26	#define SPACE 0x11
	27	#define INQUIRY 0x12
	28	#define RECOVER_BUFFERED_DATA 0x14
	29	#define MODE_SELECT 0x15
	30	#define RESERVE 0x16
	31	#define RELEASE 0x17
	32	#define COPY 0x18
	33	#define ERASE 0x19
	34	#define MODE_SENSE 0x1a
	35	#define START_STOP 0x1b
	36	#define RECEIVE_DIAGNOSTIC 0x1c
	37	#define SEND_DIAGNOSTIC 0x1d
	38	#define ALLOW_MEDIUM_REMOVAL 0x1e
	39
	40	#define READ_FORMAT_CAPACITIES 0x23
	41	#define SET_WINDOW 0x24
	42	#define READ_CAPACITY 0x25
	43	#define READ_10 0x28
	44	#define WRITE_10 0x2a
	45	#define SEEK_10 0x2b
	46	#define POSITION_TO_ELEMENT 0x2b
	47	#define WRITE_VERIFY 0x2e
	48	#define VERIFY 0x2f
	49	#define SEARCH_HIGH 0x30
	50	#define SEARCH_EQUAL 0x31
	51	#define SEARCH_LOW 0x32
	52	#define SET_LIMITS 0x33
	53	#define PRE_FETCH 0x34
	54	#define READ_POSITION 0x34
	55	#define SYNCHRONIZE_CACHE 0x35
	56	#define LOCK_UNLOCK_CACHE 0x36
	57	#define READ_DEFECT_DATA 0x37
	58	#define MEDIUM_SCAN 0x38
	59	#define COMPARE 0x39
	60	#define COPY_VERIFY 0x3a
	61	#define WRITE_BUFFER 0x3b
	62	#define READ_BUFFER 0x3c
	63	#define UPDATE_BLOCK 0x3d
	64	#define READ_LONG 0x3e
	65	#define WRITE_LONG 0x3f
66	#define CHANGE_DEFINITION 0x40
67	#define WRITE_SAME 0x41
68	#define UNMAP 0x42
69	#define READ_TOC 0x43
70	#define READ_HEADER 0x44
71	#define GET_EVENT_STATUS_NOTIFICATION 0x4a
72	#define LOG_SELECT 0x4c
73	#define LOG_SENSE 0x4d
74	#define XDWRITEREAD_10 0x53
75	#define MODE_SELECT_10 0x55
76	#define RESERVE_10 0x56
77	#define RELEASE_10 0x57
78	#define MODE_SENSE_10 0x5a
79	#define PERSISTENT_RESERVE_IN 0x5e
80	#define PERSISTENT_RESERVE_OUT 0x5f
81	#define VARIABLE_LENGTH_CMD 0x7f
82	#define REPORT_LUNS 0xa0
83	#define SECURITY_PROTOCOL_IN 0xa2
84	#define MAINTENANCE_IN 0xa3
85	#define MAINTENANCE_OUT 0xa4
86	#define MOVE_MEDIUM 0xa5
87	#define EXCHANGE_MEDIUM 0xa6
88	#define READ_12 0xa8
85686f69	89	#define SERVICE_ACTION_OUT_12 0xa9
04010929	90	#define WRITE_12 0xaa
85686f69	91	#define SERVICE_ACTION_IN_12 0xab
04010929 JO	92	#define WRITE_VERIFY_12 0xae
	93	#define VERIFY_12 0xaf
	94	#define SEARCH_HIGH_12 0xb0
	95	#define SEARCH_EQUAL_12 0xb1
	96	#define SEARCH_LOW_12 0xb2
	97	#define SECURITY_PROTOCOL_OUT 0xb5
	98	#define READ_ELEMENT_STATUS 0xb8
	99	#define SEND_VOLUME_TAG 0xb6
	100	#define WRITE_LONG_2 0xea
	101	#define EXTENDED_COPY 0x83
	102	#define RECEIVE_COPY_RESULTS 0x84
	103	#define ACCESS_CONTROL_IN 0x86
	104	#define ACCESS_CONTROL_OUT 0x87
	105	#define READ_16 0x88
	106	#define WRITE_16 0x8a
	107	#define READ_ATTRIBUTE 0x8c
	108	#define WRITE_ATTRIBUTE 0x8d
	109	#define VERIFY_16 0x8f
	110	#define SYNCHRONIZE_CACHE_16 0x91
	111	#define WRITE_SAME_16 0x93
85686f69	112	#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
eb846d9f	113	#define SERVICE_ACTION_IN_16 0x9e
85686f69	114	#define SERVICE_ACTION_OUT_16 0x9f
04010929 JO	115	/* values for service action in */
	116	#define SAI_READ_CAPACITY_16 0x10
	117	#define SAI_GET_LBA_STATUS 0x12
	118	/* values for VARIABLE_LENGTH_CMD service action codes
	119	* see spc4r17 Section D.3.5, table D.7 and D.8 */
	120	#define VLC_SA_RECEIVE_CREDENTIAL 0x1800
	121	/* values for maintenance in */
	122	#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
	123	#define MI_REPORT_TARGET_PGS 0x0a
	124	#define MI_REPORT_ALIASES 0x0b
	125	#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
	126	#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
	127	#define MI_REPORT_PRIORITY 0x0e
	128	#define MI_REPORT_TIMESTAMP 0x0f
	129	#define MI_MANAGEMENT_PROTOCOL_IN 0x10
	130	/* value for MI_REPORT_TARGET_PGS ext header */
	131	#define MI_EXT_HDR_PARAM_FMT 0x20
	132	/* values for maintenance out */
	133	#define MO_SET_IDENTIFYING_INFORMATION 0x06
	134	#define MO_SET_TARGET_PGS 0x0a
	135	#define MO_CHANGE_ALIASES 0x0b
	136	#define MO_SET_PRIORITY 0x0e
	137	#define MO_SET_TIMESTAMP 0x0f
	138	#define MO_MANAGEMENT_PROTOCOL_OUT 0x10
	139	/* values for variable length command */
	140	#define XDREAD_32 0x03
	141	#define XDWRITE_32 0x04
	142	#define XPWRITE_32 0x06
	143	#define XDWRITEREAD_32 0x07
	144	#define READ_32 0x09
	145	#define VERIFY_32 0x0a
	146	#define WRITE_32 0x0b
	147	#define WRITE_SAME_32 0x0d
	148
	149	#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
	150	#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) \| cdb[9])
	151
	152	static const char *
	153	scsi_trace_misc(struct trace_seq , unsigned char , int);
	154
	155	static const char *
	156	scsi_trace_rw6(struct trace_seq p, unsigned char cdb, int len)
	157	{
	158	const char *ret = p->buffer + p->len;
	159	sector_t lba = 0, txlen = 0;
	160
	161	lba \|= ((cdb[1] & 0x1F) << 16);
	162	lba \|= (cdb[2] << 8);
	163	lba \|= cdb[3];
	164	txlen = cdb[4];
	165
	166	trace_seq_printf(p, "lba=%llu txlen=%llu",
	167	(unsigned long long)lba, (unsigned long long)txlen);
	168	trace_seq_putc(p, 0);
	169	return ret;
	170	}
	171
	172	static const char *
	173	scsi_trace_rw10(struct trace_seq p, unsigned char cdb, int len)
	174	{
	175	const char *ret = p->buffer + p->len;
	176	sector_t lba = 0, txlen = 0;
	177
	178	lba \|= (cdb[2] << 24);
179	lba \|= (cdb[3] << 16);
180	lba \|= (cdb[4] << 8);
181	lba \|= cdb[5];
182	txlen \|= (cdb[7] << 8);
183	txlen \|= cdb[8];
184
185	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
186	(unsigned long long)lba, (unsigned long long)txlen,
187	cdb[1] >> 5);
188
189	if (cdb[0] == WRITE_SAME)
190	trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
191
192	trace_seq_putc(p, 0);
193	return ret;
194	}
195
196	static const char *
197	scsi_trace_rw12(struct trace_seq p, unsigned char cdb, int len)
198	{
199	const char *ret = p->buffer + p->len;
200	sector_t lba = 0, txlen = 0;
201
202	lba \|= (cdb[2] << 24);
203	lba \|= (cdb[3] << 16);
204	lba \|= (cdb[4] << 8);
205	lba \|= cdb[5];
206	txlen \|= (cdb[6] << 24);
207	txlen \|= (cdb[7] << 16);
208	txlen \|= (cdb[8] << 8);
209	txlen \|= cdb[9];
210
211	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
212	(unsigned long long)lba, (unsigned long long)txlen,
213	cdb[1] >> 5);
214	trace_seq_putc(p, 0);
215	return ret;
216	}
217
218	static const char *
219	scsi_trace_rw16(struct trace_seq p, unsigned char cdb, int len)
220	{
221	const char *ret = p->buffer + p->len;
222	sector_t lba = 0, txlen = 0;
223
224	lba \|= ((u64)cdb[2] << 56);
225	lba \|= ((u64)cdb[3] << 48);
226	lba \|= ((u64)cdb[4] << 40);
227	lba \|= ((u64)cdb[5] << 32);
228	lba \|= (cdb[6] << 24);
229	lba \|= (cdb[7] << 16);
230	lba \|= (cdb[8] << 8);
231	lba \|= cdb[9];
232	txlen \|= (cdb[10] << 24);
233	txlen \|= (cdb[11] << 16);
234	txlen \|= (cdb[12] << 8);
235	txlen \|= cdb[13];
236
237	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
238	(unsigned long long)lba, (unsigned long long)txlen,
239	cdb[1] >> 5);
240
241	if (cdb[0] == WRITE_SAME_16)
242	trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
243
244	trace_seq_putc(p, 0);
245	return ret;
246	}
247
248	static const char *
249	scsi_trace_rw32(struct trace_seq p, unsigned char cdb, int len)
250	{
251	const char ret = p->buffer + p->len, cmd;
252	sector_t lba = 0, txlen = 0;
253	u32 ei_lbrt = 0;
254
255	switch (SERVICE_ACTION32(cdb)) {
256	case READ_32:
257	cmd = "READ";
258	break;
259	case VERIFY_32:
260	cmd = "VERIFY";
261	break;
262	case WRITE_32:
263	cmd = "WRITE";
264	break;
265	case WRITE_SAME_32:
266	cmd = "WRITE_SAME";
267	break;
268	default:
269	trace_seq_printf(p, "UNKNOWN");
270	goto out;
271	}
272
273	lba \|= ((u64)cdb[12] << 56);
274	lba \|= ((u64)cdb[13] << 48);
275	lba \|= ((u64)cdb[14] << 40);
276	lba \|= ((u64)cdb[15] << 32);
277	lba \|= (cdb[16] << 24);
278	lba \|= (cdb[17] << 16);
279	lba \|= (cdb[18] << 8);
280	lba \|= cdb[19];
281	ei_lbrt \|= (cdb[20] << 24);
282	ei_lbrt \|= (cdb[21] << 16);
283	ei_lbrt \|= (cdb[22] << 8);
284	ei_lbrt \|= cdb[23];
285	txlen \|= (cdb[28] << 24);
286	txlen \|= (cdb[29] << 16);
287	txlen \|= (cdb[30] << 8);
288	txlen \|= cdb[31];
289
290	trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
291	cmd, (unsigned long long)lba,
292	(unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
293
294	if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
295	trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
296
297	out:
298	trace_seq_putc(p, 0);
299	return ret;
300	}
301
302	static const char *
303	scsi_trace_unmap(struct trace_seq p, unsigned char cdb, int len)
304	{
305	const char *ret = p->buffer + p->len;
306	unsigned int regions = cdb[7] << 8 \| cdb[8];
307
308	trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
309	trace_seq_putc(p, 0);
310	return ret;
311	}
312
313	static const char *
314	scsi_trace_service_action_in(struct trace_seq p, unsigned char cdb, int len)
315	{
316	const char ret = p->buffer + p->len, cmd;
317	sector_t lba = 0;
318	u32 alloc_len = 0;
319
320	switch (SERVICE_ACTION16(cdb)) {
321	case SAI_READ_CAPACITY_16:
322	cmd = "READ_CAPACITY_16";
323	break;
324	case SAI_GET_LBA_STATUS:
325	cmd = "GET_LBA_STATUS";
326	break;
327	default:
328	trace_seq_printf(p, "UNKNOWN");
329	goto out;
330	}
331
332	lba \|= ((u64)cdb[2] << 56);
333	lba \|= ((u64)cdb[3] << 48);
334	lba \|= ((u64)cdb[4] << 40);
335	lba \|= ((u64)cdb[5] << 32);
336	lba \|= (cdb[6] << 24);
337	lba \|= (cdb[7] << 16);
338	lba \|= (cdb[8] << 8);
339	lba \|= cdb[9];
340	alloc_len \|= (cdb[10] << 24);
341	alloc_len \|= (cdb[11] << 16);
342	alloc_len \|= (cdb[12] << 8);
343	alloc_len \|= cdb[13];
344
345	trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
346	(unsigned long long)lba, alloc_len);
347
348	out:
349	trace_seq_putc(p, 0);
350	return ret;
351	}
352
353	static const char *
354	scsi_trace_varlen(struct trace_seq p, unsigned char cdb, int len)
355	{
356	switch (SERVICE_ACTION32(cdb)) {
357	case READ_32:
358	case VERIFY_32:
359	case WRITE_32:
360	case WRITE_SAME_32:
361	return scsi_trace_rw32(p, cdb, len);
362	default:
363	return scsi_trace_misc(p, cdb, len);
364	}
365	}
366
367	static const char *
368	scsi_trace_misc(struct trace_seq p, unsigned char cdb, int len)
369	{
370	const char *ret = p->buffer + p->len;
371
372	trace_seq_printf(p, "-");
373	trace_seq_putc(p, 0);
374	return ret;
375	}
376
377	const char *
378	scsi_trace_parse_cdb(struct trace_seq p, unsigned char cdb, int len)
379	{
380	switch (cdb[0]) {
381	case READ_6:
382	case WRITE_6:
383	return scsi_trace_rw6(p, cdb, len);
384	case READ_10:
385	case VERIFY:
386	case WRITE_10:
387	case WRITE_SAME:
388	return scsi_trace_rw10(p, cdb, len);
389	case READ_12:
390	case VERIFY_12:
391	case WRITE_12:
392	return scsi_trace_rw12(p, cdb, len);
393	case READ_16:
394	case VERIFY_16:
395	case WRITE_16:
396	case WRITE_SAME_16:
397	return scsi_trace_rw16(p, cdb, len);
398	case UNMAP:
399	return scsi_trace_unmap(p, cdb, len);
eb846d9f	400	case SERVICE_ACTION_IN_16:
04010929 JO	401	return scsi_trace_service_action_in(p, cdb, len);
	402	case VARIABLE_LENGTH_CMD:
	403	return scsi_trace_varlen(p, cdb, len);
	404	default:
	405	return scsi_trace_misc(p, cdb, len);
	406	}
	407	}
	408
	409	unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
	410	unsigned long long *args)
	411	{
0e9e79a1	412	scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
04010929 JO	413	return 0;
	414	}
	415
	416	int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
	417	{
	418	pevent_register_print_function(pevent,
	419	process_scsi_trace_parse_cdb,
	420	PEVENT_FUNC_ARG_STRING,
	421	"scsi_trace_parse_cdb",
	422	PEVENT_FUNC_ARG_PTR,
	423	PEVENT_FUNC_ARG_PTR,
	424	PEVENT_FUNC_ARG_INT,
	425	PEVENT_FUNC_ARG_VOID);
	426	return 0;
	427	}
a157112c NK	428
	429	void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
	430	{
	431	pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
	432	"scsi_trace_parse_cdb");
	433	}