summaryrefslogtreecommitdiffstats
path: root/drivers/nvme/target/trace.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/nvme/target/trace.c')
-rw-r--r--drivers/nvme/target/trace.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/nvme/target/trace.c b/drivers/nvme/target/trace.c
new file mode 100644
index 000000000..bff454d46
--- /dev/null
+++ b/drivers/nvme/target/trace.c
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NVM Express target device driver tracepoints
+ * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
+ */
+
+#include <asm/unaligned.h>
+#include "trace.h"
+
+static const char *nvmet_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 cns = cdw10[0];
+ u16 ctrlid = get_unaligned_le16(cdw10 + 2);
+
+ trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_admin_get_features(struct trace_seq *p,
+ u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 fid = cdw10[0];
+ u8 sel = cdw10[1] & 0x7;
+ u32 cdw11 = get_unaligned_le32(cdw10 + 4);
+
+ trace_seq_printf(p, "fid=0x%x, sel=0x%x, cdw11=0x%x", fid, sel, cdw11);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_get_lba_status(struct trace_seq *p,
+ u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u64 slba = get_unaligned_le64(cdw10);
+ u32 mndw = get_unaligned_le32(cdw10 + 8);
+ u16 rl = get_unaligned_le16(cdw10 + 12);
+ u8 atype = cdw10[15];
+
+ trace_seq_printf(p, "slba=0x%llx, mndw=0x%x, rl=0x%x, atype=%u",
+ slba, mndw, rl, atype);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_admin_set_features(struct trace_seq *p,
+ u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 fid = cdw10[0];
+ u8 sv = cdw10[3] & 0x8;
+ u32 cdw11 = get_unaligned_le32(cdw10 + 4);
+
+ trace_seq_printf(p, "fid=0x%x, sv=0x%x, cdw11=0x%x", fid, sv, cdw11);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_read_write(struct trace_seq *p, u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u64 slba = get_unaligned_le64(cdw10);
+ u16 length = get_unaligned_le16(cdw10 + 8);
+ u16 control = get_unaligned_le16(cdw10 + 10);
+ u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
+ u32 reftag = get_unaligned_le32(cdw10 + 16);
+
+ trace_seq_printf(p,
+ "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
+ slba, length, control, dsmgmt, reftag);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_dsm(struct trace_seq *p, u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "nr=%u, attributes=%u",
+ get_unaligned_le32(cdw10),
+ get_unaligned_le32(cdw10 + 4));
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+static const char *nvmet_trace_common(struct trace_seq *p, u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p,
+ u8 opcode, u8 *cdw10)
+{
+ switch (opcode) {
+ case nvme_admin_identify:
+ return nvmet_trace_admin_identify(p, cdw10);
+ case nvme_admin_set_features:
+ return nvmet_trace_admin_set_features(p, cdw10);
+ case nvme_admin_get_features:
+ return nvmet_trace_admin_get_features(p, cdw10);
+ case nvme_admin_get_lba_status:
+ return nvmet_trace_get_lba_status(p, cdw10);
+ default:
+ return nvmet_trace_common(p, cdw10);
+ }
+}
+
+const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
+ u8 opcode, u8 *cdw10)
+{
+ switch (opcode) {
+ case nvme_cmd_read:
+ case nvme_cmd_write:
+ case nvme_cmd_write_zeroes:
+ return nvmet_trace_read_write(p, cdw10);
+ case nvme_cmd_dsm:
+ return nvmet_trace_dsm(p, cdw10);
+ default:
+ return nvmet_trace_common(p, cdw10);
+ }
+}
+
+static const char *nvmet_trace_fabrics_property_set(struct trace_seq *p,
+ u8 *spc)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 attrib = spc[0];
+ u32 ofst = get_unaligned_le32(spc + 4);
+ u64 value = get_unaligned_le64(spc + 8);
+
+ trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
+ attrib, ofst, value);
+ trace_seq_putc(p, 0);
+ return ret;
+}
+
+static const char *nvmet_trace_fabrics_connect(struct trace_seq *p,
+ u8 *spc)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u16 recfmt = get_unaligned_le16(spc);
+ u16 qid = get_unaligned_le16(spc + 2);
+ u16 sqsize = get_unaligned_le16(spc + 4);
+ u8 cattr = spc[6];
+ u32 kato = get_unaligned_le32(spc + 8);
+
+ trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
+ recfmt, qid, sqsize, cattr, kato);
+ trace_seq_putc(p, 0);
+ return ret;
+}
+
+static const char *nvmet_trace_fabrics_property_get(struct trace_seq *p,
+ u8 *spc)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 attrib = spc[0];
+ u32 ofst = get_unaligned_le32(spc + 4);
+
+ trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
+ trace_seq_putc(p, 0);
+ return ret;
+}
+
+static const char *nvmet_trace_fabrics_common(struct trace_seq *p, u8 *spc)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "specific=%*ph", 24, spc);
+ trace_seq_putc(p, 0);
+ return ret;
+}
+
+const char *nvmet_trace_parse_fabrics_cmd(struct trace_seq *p,
+ u8 fctype, u8 *spc)
+{
+ switch (fctype) {
+ case nvme_fabrics_type_property_set:
+ return nvmet_trace_fabrics_property_set(p, spc);
+ case nvme_fabrics_type_connect:
+ return nvmet_trace_fabrics_connect(p, spc);
+ case nvme_fabrics_type_property_get:
+ return nvmet_trace_fabrics_property_get(p, spc);
+ default:
+ return nvmet_trace_fabrics_common(p, spc);
+ }
+}
+
+const char *nvmet_trace_disk_name(struct trace_seq *p, char *name)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ if (*name)
+ trace_seq_printf(p, "disk=%s, ", name);
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+
+const char *nvmet_trace_ctrl_name(struct trace_seq *p, struct nvmet_ctrl *ctrl)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ /*
+ * XXX: We don't know the controller instance before executing the
+ * connect command itself because the connect command for the admin
+ * queue will not provide the cntlid which will be allocated in this
+ * command. In case of io queues, the controller instance will be
+ * mapped by the extra data of the connect command.
+ * If we can know the extra data of the connect command in this stage,
+ * we can update this print statement later.
+ */
+ if (ctrl)
+ trace_seq_printf(p, "%d", ctrl->cntlid);
+ else
+ trace_seq_printf(p, "_");
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+