i40e: acknowledge VFLR when disabling SR-IOV
When SR-IOV is disabled, the (now nonexistent) virtual function devices undergo a VFLR event. We don't need to handle this event because the VFs are gone, but we do need to tell the HW that they are complete. This fixes an issue with a phantom VFLR and broken VFs when SR-IOV is re-enabled. Change-Id: I7580b49ded0158172a85b14661ec212af77000c8 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
parent
3197ce220c
commit
f7414531a0
|
@ -726,7 +726,9 @@ static bool i40e_vfs_are_assigned(struct i40e_pf *pf)
|
|||
**/
|
||||
void i40e_free_vfs(struct i40e_pf *pf)
|
||||
{
|
||||
int i, tmp;
|
||||
struct i40e_hw *hw = &pf->hw;
|
||||
u32 reg_idx, bit_idx;
|
||||
int i, tmp, vf_id;
|
||||
|
||||
if (!pf->vf)
|
||||
return;
|
||||
|
@ -748,8 +750,17 @@ void i40e_free_vfs(struct i40e_pf *pf)
|
|||
kfree(pf->vf);
|
||||
pf->vf = NULL;
|
||||
|
||||
if (!i40e_vfs_are_assigned(pf))
|
||||
if (!i40e_vfs_are_assigned(pf)) {
|
||||
pci_disable_sriov(pf->pdev);
|
||||
/* Acknowledge VFLR for all VFS. Without this, VFs will fail to
|
||||
* work correctly when SR-IOV gets re-enabled.
|
||||
*/
|
||||
for (vf_id = 0; vf_id < tmp; vf_id++) {
|
||||
reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
|
||||
bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
|
||||
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
|
||||
}
|
||||
}
|
||||
else
|
||||
dev_warn(&pf->pdev->dev,
|
||||
"unable to disable SR-IOV because VFs are assigned.\n");
|
||||
|
|
Loading…
Reference in a new issue