| Message ID | 20201005173654.31773-11-diana.craciun@oss.nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | vfio/fsl-mc: VFIO support for FSL-MC device | expand |
Hi Diana, On 10/5/20 7:36 PM, 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.craciun@oss.nxp.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Eric > --- > drivers/vfio/fsl-mc/vfio_fsl_mc.c | 18 +++++++++++++++++- > 1 file changed, 17 insertions(+), 1 deletion(-) > > diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc.c b/drivers/vfio/fsl-mc/vfio_fsl_mc.c > index d95568cd8021..d009f873578c 100644 > --- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c > +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c > @@ -217,6 +217,10 @@ static long vfio_fsl_mc_ioctl(void *device_data, unsigned int cmd, > return -EINVAL; > > info.flags = VFIO_DEVICE_FLAGS_FSL_MC; > + > + if (is_fsl_mc_bus_dprc(mc_dev)) > + info.flags |= VFIO_DEVICE_FLAGS_RESET; > + > info.num_regions = mc_dev->obj_desc.region_count; > info.num_irqs = mc_dev->obj_desc.irq_count; > > @@ -299,7 +303,19 @@ static long vfio_fsl_mc_ioctl(void *device_data, unsigned int cmd, > } > case VFIO_DEVICE_RESET: > { > - return -ENOTTY; > + int ret; > + 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; > + > + 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; >
diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc.c b/drivers/vfio/fsl-mc/vfio_fsl_mc.c index d95568cd8021..d009f873578c 100644 --- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c @@ -217,6 +217,10 @@ static long vfio_fsl_mc_ioctl(void *device_data, unsigned int cmd, return -EINVAL; info.flags = VFIO_DEVICE_FLAGS_FSL_MC; + + if (is_fsl_mc_bus_dprc(mc_dev)) + info.flags |= VFIO_DEVICE_FLAGS_RESET; + info.num_regions = mc_dev->obj_desc.region_count; info.num_irqs = mc_dev->obj_desc.irq_count; @@ -299,7 +303,19 @@ static long vfio_fsl_mc_ioctl(void *device_data, unsigned int cmd, } case VFIO_DEVICE_RESET: { - return -ENOTTY; + int ret; + 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; + + 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;
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.craciun@oss.nxp.com> --- drivers/vfio/fsl-mc/vfio_fsl_mc.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)