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/scsi_host.h> |
7 | #include "scsi_debugfs.h" |
8 | |
9 | #define SCSI_CMD_FLAG_NAME(name)[const_ilog2(SCMD_##name)] = #name |
10 | static const char *const scsi_cmd_flags[] = { |
11 | SCSI_CMD_FLAG_NAME(TAGGED), |
12 | SCSI_CMD_FLAG_NAME(INITIALIZED), |
13 | SCSI_CMD_FLAG_NAME(LAST), |
14 | }; |
15 | #undef SCSI_CMD_FLAG_NAME |
16 | |
17 | static int scsi_flags_show(struct seq_file *m, const unsigned long flags, |
18 | const char *const *flag_name, int flag_name_count) |
19 | { |
20 | bool sep = false; |
21 | int i; |
22 | |
23 | for_each_set_bit(i, &flags, BITS_PER_LONG) { |
24 | if (sep) |
25 | seq_puts(m, s: "|" ); |
26 | sep = true; |
27 | if (i < flag_name_count && flag_name[i]) |
28 | seq_puts(m, s: flag_name[i]); |
29 | else |
30 | seq_printf(m, fmt: "%d" , i); |
31 | } |
32 | return 0; |
33 | } |
34 | |
35 | void scsi_show_rq(struct seq_file *m, struct request *rq) |
36 | { |
37 | struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq), *cmd2; |
38 | struct Scsi_Host *shost = cmd->device->host; |
39 | int alloc_ms = jiffies_to_msecs(j: jiffies - cmd->jiffies_at_alloc); |
40 | int timeout_ms = jiffies_to_msecs(j: rq->timeout); |
41 | const char *list_info = NULL; |
42 | char buf[80] = "(?)" ; |
43 | |
44 | spin_lock_irq(lock: shost->host_lock); |
45 | list_for_each_entry(cmd2, &shost->eh_abort_list, eh_entry) { |
46 | if (cmd == cmd2) { |
47 | list_info = "on eh_abort_list" ; |
48 | goto unlock; |
49 | } |
50 | } |
51 | list_for_each_entry(cmd2, &shost->eh_cmd_q, eh_entry) { |
52 | if (cmd == cmd2) { |
53 | list_info = "on eh_cmd_q" ; |
54 | goto unlock; |
55 | } |
56 | } |
57 | unlock: |
58 | spin_unlock_irq(lock: shost->host_lock); |
59 | |
60 | __scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len); |
61 | seq_printf(m, fmt: ", .cmd=%s, .retries=%d, .allowed=%d, .result = %#x, %s%s.flags=" , |
62 | buf, cmd->retries, cmd->allowed, cmd->result, |
63 | list_info ? : "" , list_info ? ", " : "" ); |
64 | scsi_flags_show(m, flags: cmd->flags, flag_name: scsi_cmd_flags, |
65 | ARRAY_SIZE(scsi_cmd_flags)); |
66 | seq_printf(m, fmt: ", .timeout=%d.%03d, allocated %d.%03d s ago" , |
67 | timeout_ms / 1000, timeout_ms % 1000, |
68 | alloc_ms / 1000, alloc_ms % 1000); |
69 | } |
70 | |