uapi/habanalabs: add some comments in habanalabs.h

This patch adds two comments in uapi/habanalabs.h:
- From which queue id the internal queues begin
- Invalid values that can be returned in the seq field from the CS IOCTL

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 7fd6f633534c..ab1957e31077 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -33,7 +33,7 @@ enum goya_queue_id {
         GOYA_QUEUE_ID_DMA_3,
         GOYA_QUEUE_ID_DMA_4,
         GOYA_QUEUE_ID_CPU_PQ,
-        GOYA_QUEUE_ID_MME,
+        GOYA_QUEUE_ID_MME,      /* Internal queues start here */
         GOYA_QUEUE_ID_TPC0,
         GOYA_QUEUE_ID_TPC1,
         GOYA_QUEUE_ID_TPC2,
@@ -181,7 +181,10 @@ struct hl_cs_in {
 };
 
 struct hl_cs_out {
-        /* this holds the sequence number of the CS to pass to wait ioctl */
+        /*
+         * seq holds the sequence number of the CS to pass to wait ioctl. All
+         * values are valid except for 0 and ULLONG_MAX
+         */
         __u64 seq;
         /* HL_CS_STATUS_* */
         __u32 status;