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| author |   Alex Williamson <alex.williamson@redhat.com> | 2021-10-11 15:50:49 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-10-11 15:50:49 -0600 |
| commit | 052493d5534af4a47332193144cee8e369cce60b (patch) | |
| tree | 7a49923d8baa5943b2568f21b9b29debf0ea3101 /drivers/vfio | |
| parent | Merge branch 'v5.16/vfio/hch-cleanup-vfio-iommu_group-creation-v6' into v5.16/vfio/next (diff) | |
| parent | vfio/fsl-mc: Add per device reset support (diff) | |
| download | linux-dev-052493d5534af4a47332193144cee8e369cce60b.tar.xz linux-dev-052493d5534af4a47332193144cee8e369cce60b.zip | |
Merge branch 'v5.16/vfio/diana-fsl-reset-v2' into v5.16/vfio/next
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/fsl-mc/vfio_fsl_mc.c | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc.c b/drivers/vfio/fsl-mc/vfio_fsl_mc.c index 9e838fed5603..6e2e62c6f47a 100644 --- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c @@ -65,6 +65,34 @@ static void vfio_fsl_mc_regions_cleanup(struct vfio_fsl_mc_device *vdev) kfree(vdev->regions); } +static int vfio_fsl_mc_reset_device(struct vfio_fsl_mc_device *vdev) +{ + struct fsl_mc_device *mc_dev = vdev->mc_dev; + int ret = 0; + + if (is_fsl_mc_bus_dprc(vdev->mc_dev)) { + return dprc_reset_container(mc_dev->mc_io, 0, + mc_dev->mc_handle, + mc_dev->obj_desc.id, + DPRC_RESET_OPTION_NON_RECURSIVE); + } else { + u16 token; + + ret = fsl_mc_obj_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id, + mc_dev->obj_desc.type, + &token); + if (ret) + goto out; + ret = fsl_mc_obj_reset(mc_dev->mc_io, 0, token); + if (ret) { + fsl_mc_obj_close(mc_dev->mc_io, 0, token); + goto out; + } + ret = fsl_mc_obj_close(mc_dev->mc_io, 0, token); + } +out: + return ret; +} static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev) { @@ -78,9 +106,7 @@ static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev) vfio_fsl_mc_regions_cleanup(vdev); /* reset the device before cleaning up the interrupts */ - ret = dprc_reset_container(mc_cont->mc_io, 0, mc_cont->mc_handle, - mc_cont->obj_desc.id, - DPRC_RESET_OPTION_NON_RECURSIVE); + ret = vfio_fsl_mc_reset_device(vdev); if (WARN_ON(ret)) dev_warn(&mc_cont->dev, @@ -203,18 +229,7 @@ static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev, } case VFIO_DEVICE_RESET: { - 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; + return vfio_fsl_mc_reset_device(vdev); } default: |