From 4e2bef2beb918241225e7dee824a4714ebb51028 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Fri, 12 Jul 2024 19:17:26 -0400
Subject: kernel: nvme: Handle cq_head and phase bit

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/dev/ic/nvme.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'sys')

diff --git a/sys/dev/ic/nvme.c b/sys/dev/ic/nvme.c
index 9eb302b..444cc3e 100644
--- a/sys/dev/ic/nvme.c
+++ b/sys/dev/ic/nvme.c
@@ -240,6 +240,13 @@ nvme_poll_submit_cmd(struct nvme_queue *q, struct nvme_cmd cmd)
         ++spins;
     }
 
+    ++q->cq_head;
+    if (q->cq_head >= q->size) {
+        q->cq_head = 0;
+        q->cq_phase = !q->cq_phase;
+    }
+
+    mmio_write32(q->cq_db, q->cq_head);
     return 0;
 }
 
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