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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - drivers/nvme/host/trace.c
2 * NVM Express device driver tracepoints
3 * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 #include <asm/unaligned.h>
18 static const char *nvme_trace_create_sq(struct trace_seq
*p
, u8
*cdw10
)
20 const char *ret
= trace_seq_buffer_ptr(p
);
21 u16 sqid
= get_unaligned_le16(cdw10
);
22 u16 qsize
= get_unaligned_le16(cdw10
+ 2);
23 u16 sq_flags
= get_unaligned_le16(cdw10
+ 4);
24 u16 cqid
= get_unaligned_le16(cdw10
+ 6);
27 trace_seq_printf(p
, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u",
28 sqid
, qsize
, sq_flags
, cqid
);
34 static const char *nvme_trace_create_cq(struct trace_seq
*p
, u8
*cdw10
)
36 const char *ret
= trace_seq_buffer_ptr(p
);
37 u16 cqid
= get_unaligned_le16(cdw10
);
38 u16 qsize
= get_unaligned_le16(cdw10
+ 2);
39 u16 cq_flags
= get_unaligned_le16(cdw10
+ 4);
40 u16 irq_vector
= get_unaligned_le16(cdw10
+ 6);
42 trace_seq_printf(p
, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u",
43 cqid
, qsize
, cq_flags
, irq_vector
);
49 static const char *nvme_trace_admin_identify(struct trace_seq
*p
, u8
*cdw10
)
51 const char *ret
= trace_seq_buffer_ptr(p
);
53 u16 ctrlid
= get_unaligned_le16(cdw10
+ 2);
55 trace_seq_printf(p
, "cns=%u, ctrlid=%u", cns
, ctrlid
);
63 static const char *nvme_trace_read_write(struct trace_seq
*p
, u8
*cdw10
)
65 const char *ret
= trace_seq_buffer_ptr(p
);
66 u64 slba
= get_unaligned_le64(cdw10
);
67 u16 length
= get_unaligned_le16(cdw10
+ 8);
68 u16 control
= get_unaligned_le16(cdw10
+ 10);
69 u32 dsmgmt
= get_unaligned_le32(cdw10
+ 12);
70 u32 reftag
= get_unaligned_le32(cdw10
+ 16);
73 "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
74 slba
, length
, control
, dsmgmt
, reftag
);
80 static const char *nvme_trace_dsm(struct trace_seq
*p
, u8
*cdw10
)
82 const char *ret
= trace_seq_buffer_ptr(p
);
84 trace_seq_printf(p
, "nr=%u, attributes=%u",
85 get_unaligned_le32(cdw10
),
86 get_unaligned_le32(cdw10
+ 4));
92 static const char *nvme_trace_common(struct trace_seq
*p
, u8
*cdw10
)
94 const char *ret
= trace_seq_buffer_ptr(p
);
96 trace_seq_printf(p
, "cdw10=%*ph", 24, cdw10
);
102 const char *nvme_trace_parse_admin_cmd(struct trace_seq
*p
,
103 u8 opcode
, u8
*cdw10
)
106 case nvme_admin_create_sq
:
107 return nvme_trace_create_sq(p
, cdw10
);
108 case nvme_admin_create_cq
:
109 return nvme_trace_create_cq(p
, cdw10
);
110 case nvme_admin_identify
:
111 return nvme_trace_admin_identify(p
, cdw10
);
113 return nvme_trace_common(p
, cdw10
);
117 const char *nvme_trace_parse_nvm_cmd(struct trace_seq
*p
,
118 u8 opcode
, u8
*cdw10
)
123 case nvme_cmd_write_zeroes
:
124 return nvme_trace_read_write(p
, cdw10
);
126 return nvme_trace_dsm(p
, cdw10
);
128 return nvme_trace_common(p
, cdw10
);