libata-trace: decode subcommands
Some commands like FPDMA RECEIVE or NCQ NON DATA can encapsulate
other commands to NCQ transport. So decode the subcmds, too.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/libata-trace.c b/drivers/ata/libata-trace.c
index fd30b8c..99ec1e8 100644
--- a/drivers/ata/libata-trace.c
+++ b/drivers/ata/libata-trace.c
@@ -149,3 +149,46 @@
return ret;
}
+
+const char *
+libata_trace_parse_subcmd(struct trace_seq *p, unsigned char cmd,
+ unsigned char feature, unsigned char hob_nsect)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ switch (cmd) {
+ case ATA_CMD_FPDMA_RECV:
+ switch (hob_nsect & 0x5f) {
+ case ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT:
+ trace_seq_printf(p, " READ_LOG_DMA_EXT");
+ break;
+ }
+ break;
+ case ATA_CMD_FPDMA_SEND:
+ switch (hob_nsect & 0x5f) {
+ case ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT:
+ trace_seq_printf(p, " WRITE_LOG_DMA_EXT");
+ break;
+ case ATA_SUBCMD_FPDMA_SEND_DSM:
+ trace_seq_printf(p, " DATASET_MANAGEMENT");
+ break;
+ }
+ break;
+ case ATA_CMD_NCQ_NON_DATA:
+ switch (feature) {
+ case ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE:
+ trace_seq_printf(p, " ABORT_QUEUE");
+ break;
+ case ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES:
+ trace_seq_printf(p, " SET_FEATURES");
+ break;
+ case ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT:
+ trace_seq_printf(p, " ZERO_EXT");
+ break;
+ }
+ break;
+ }
+ trace_seq_putc(p, 0);
+
+ return ret;
+}