nvme: parse zns command's zsa and zrasf to string

Parse zone mgmt send commands's zsa and receive command's
zrasf to string to make the trace log more human-readable.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 1c36fcedea2008777140891d7f6b941ed080d8f1..5e94b3c6d58a93e71b6f016dd60f63857dfe2ee5 100644 (file)
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -164,12 +164,27 @@ static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
 
 static const char *nvme_trace_zone_mgmt_send(struct trace_seq *p, u8 *cdw10)
 {
+       static const char * const zsa_strs[] = {
+               [0x01] = "close zone",
+               [0x02] = "finish zone",
+               [0x03] = "open zone",
+               [0x04] = "reset zone",
+               [0x05] = "offline zone",
+               [0x10] = "set zone descriptor extension"
+       };
        const char *ret = trace_seq_buffer_ptr(p);
        u64 slba = get_unaligned_le64(cdw10);
+       const char *zsa_str;
        u8 zsa = cdw10[12];
        u8 all = cdw10[13];
 
-       trace_seq_printf(p, "slba=%llu, zsa=%u, all=%u", slba, zsa, all);
+       if (zsa < ARRAY_SIZE(zsa_strs) && zsa_strs[zsa])
+               zsa_str = zsa_strs[zsa];
+       else
+               zsa_str = "reserved";
+
+       trace_seq_printf(p, "slba=%llu, zsa=%u:%s, all=%u",
+               slba, zsa, zsa_str, all);
        trace_seq_putc(p, 0);
 
        return ret;
@@ -177,15 +192,32 @@ static const char *nvme_trace_zone_mgmt_send(struct trace_seq *p, u8 *cdw10)
 
 static const char *nvme_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10)
 {
+       static const char * const zrasf_strs[] = {
+               [0x00] = "list all zones",
+               [0x01] = "list the zones in the ZSE: Empty state",
+               [0x02] = "list the zones in the ZSIO: Implicitly Opened state",
+               [0x03] = "list the zones in the ZSEO: Explicitly Opened state",
+               [0x04] = "list the zones in the ZSC: Closed state",
+               [0x05] = "list the zones in the ZSF: Full state",
+               [0x06] = "list the zones in the ZSRO: Read Only state",
+               [0x07] = "list the zones in the ZSO: Offline state",
+               [0x09] = "list the zones that have the zone attribute"
+       };
        const char *ret = trace_seq_buffer_ptr(p);
        u64 slba = get_unaligned_le64(cdw10);
        u32 numd = get_unaligned_le32(cdw10 + 8);
        u8 zra = cdw10[12];
        u8 zrasf = cdw10[13];
+       const char *zrasf_str;
        u8 pr = cdw10[14];
 
-       trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u, pr=%u",
-                        slba, numd, zra, zrasf, pr);
+       if (zrasf < ARRAY_SIZE(zrasf_strs) && zrasf_strs[zrasf])
+               zrasf_str = zrasf_strs[zrasf];
+       else
+               zrasf_str = "reserved";
+
+       trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u:%s, pr=%u",
+               slba, numd, zra, zrasf, zrasf_str, pr);
        trace_seq_putc(p, 0);
 
        return ret;