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 3c529a2fce22b3d4591c974f3a60954f4416faca..9623c896a15d20c337fe3764d11ccffae34f7f6e 100644 (file)
--- 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;