From: Jon Lin <jon.lin@rock-chips.com>
Date: Tue, 19 Oct 2021 02:40:53 +0000 (+0800)
Subject: nvme: Enable FUA
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=b6bfb8971dd039a60e1cff1895ab9be8be0915b3;p=u-boot.git

nvme: Enable FUA

Most NVME devcies maintain data in internal cache for an uncertain
times, and u-boot has no method to force NVME to flush cache.
So this patch adds FUA to avoid data loss caused by power off after data
programming.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
---

diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c
index 3c529a2fce..9623c896a1 100644
--- a/drivers/nvme/nvme.c
+++ b/drivers/nvme/nvme.c
@@ -762,6 +762,10 @@ static ulong nvme_blk_rw(struct udevice *udev, lbaint_t blknr,
 	c.rw.appmask = 0;
 	c.rw.metadata = 0;
 
+	/* Enable FUA for data integrity if vwc is enabled */
+	if (dev->vwc)
+		c.rw.control |= NVME_RW_FUA;
+
 	while (total_lbas) {
 		if (total_lbas < lbas) {
 			lbas = (u16)total_lbas;