scsi: ufs: Stop using the clock scaling lock in the error handler
[platform/kernel/linux-rpi.git] / 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"
7
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(INITIALIZED),
12         SCSI_CMD_FLAG_NAME(LAST),
13 };
14 #undef SCSI_CMD_FLAG_NAME
15
16 static int scsi_flags_show(struct seq_file *m, const unsigned long flags,
17                            const char *const *flag_name, int flag_name_count)
18 {
19         bool sep = false;
20         int i;
21
22         for_each_set_bit(i, &flags, BITS_PER_LONG) {
23                 if (sep)
24                         seq_puts(m, "|");
25                 sep = true;
26                 if (i < flag_name_count && flag_name[i])
27                         seq_puts(m, flag_name[i]);
28                 else
29                         seq_printf(m, "%d", i);
30         }
31         return 0;
32 }
33
34 void scsi_show_rq(struct seq_file *m, struct request *rq)
35 {
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);
40         char buf[80] = "(?)";
41
42         if (cdb)
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);
51 }