Hi Eric,
On 9/4/2020 11:21 AM, Auger Eric wrote:
Hi Diana,
On 8/26/20 11:33 AM, Diana Craciun wrote:
Currently only resetting the DPRC container is supported which
will reset all the objects inside it. Resetting individual
objects is possible from the userspace by issueing commands
towards MC firmware.
Signed-off-by: Diana Craciun <diana.crac...@oss.nxp.com>
---
drivers/vfio/fsl-mc/vfio_fsl_mc.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
index 27713aa86878..d17c5b3148ad 100644
--- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
+++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
@@ -310,7 +310,20 @@ static long vfio_fsl_mc_ioctl(void *device_data, unsigned
int cmd,
}
case VFIO_DEVICE_RESET:
{
- return -ENOTTY;
+ int ret = 0;
initialization not needed
+
spare empty line
+ struct fsl_mc_device *mc_dev = vdev->mc_dev;
+
+ /* reset is supported only for the DPRC */
+ if (!is_fsl_mc_bus_dprc(mc_dev))
+ return -ENOTTY;
it is an error case or do we just don't care?
I rather don't care, but shouldn't the userspace know that the reset for
that device failed?
+
+ ret = dprc_reset_container(mc_dev->mc_io, 0,
+ mc_dev->mc_handle,
+ mc_dev->obj_desc.id,
+ DPRC_RESET_OPTION_NON_RECURSIVE);
+ return ret;
+
}
default:
return -ENOTTY;
Thanks
Eric
Thanks,
Diana
