]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/scsi/scsi_debugfs.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/bitops.h>
3 #include <linux/seq_file.h>
4 #include <scsi/scsi_cmnd.h>
5 #include <scsi/scsi_dbg.h>
6 #include "scsi_debugfs.h"
8 #define SCSI_CMD_FLAG_NAME(name)[const_ilog2(SCMD_##name)] = #name
9 static const char *const scsi_cmd_flags
[] = {
10 SCSI_CMD_FLAG_NAME(TAGGED
),
11 SCSI_CMD_FLAG_NAME(UNCHECKED_ISA_DMA
),
12 SCSI_CMD_FLAG_NAME(INITIALIZED
),
14 #undef SCSI_CMD_FLAG_NAME
16 static int scsi_flags_show(struct seq_file
*m
, const unsigned long flags
,
17 const char *const *flag_name
, int flag_name_count
)
22 for_each_set_bit(i
, &flags
, BITS_PER_LONG
) {
26 if (i
< flag_name_count
&& flag_name
[i
])
27 seq_puts(m
, flag_name
[i
]);
29 seq_printf(m
, "%d", i
);
34 void scsi_show_rq(struct seq_file
*m
, struct request
*rq
)
36 struct scsi_cmnd
*cmd
= container_of(scsi_req(rq
), typeof(*cmd
), req
);
37 int alloc_ms
= jiffies_to_msecs(jiffies
- cmd
->jiffies_at_alloc
);
38 int timeout_ms
= jiffies_to_msecs(rq
->timeout
);
39 const u8
*const cdb
= READ_ONCE(cmd
->cmnd
);
43 __scsi_format_command(buf
, sizeof(buf
), cdb
, cmd
->cmd_len
);
44 seq_printf(m
, ", .cmd=%s, .retries=%d, .result = %#x, .flags=", buf
,
45 cmd
->retries
, cmd
->result
);
46 scsi_flags_show(m
, cmd
->flags
, scsi_cmd_flags
,
47 ARRAY_SIZE(scsi_cmd_flags
));
48 seq_printf(m
, ", .timeout=%d.%03d, allocated %d.%03d s ago",
49 timeout_ms
/ 1000, timeout_ms
% 1000,
50 alloc_ms
/ 1000, alloc_ms
% 1000);