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i40e: Added code to prevent double resets

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Clear the VFLR bit after reset processing, instead of before. This
prevents double resets on VF init.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2016-03-10 14:59:47 -08:00 committed by Jeff Kirsher
parent d3ce573441
commit 7e5a313ed9
1 changed files with 7 additions and 4 deletions
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11
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
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@ -917,9 +917,9 @@ void i40e_reset_vf(struct i40e_vf *vf, bool flr)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, reg_idx, bit_idx;
bool rsd = false;
int i;
u32 reg;
if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
return;
@ -988,6 +988,11 @@ void i40e_reset_vf(struct i40e_vf *vf, bool flr)
}
/* tell the VF the reset is done */
wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
/* clear the VFLR bit in GLGEN_VFLRSTAT */
reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
i40e_flush(hw);
clear_bit(__I40E_VF_DISABLE, &pf->state);
}
@ -2293,9 +2298,7 @@ int i40e_vc_process_vflr_event(struct i40e_pf *pf)
vf = &pf->vf[vf_id];
reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
if (reg & BIT(bit_idx)) {
/* clear the bit in GLGEN_VFLRSTAT */
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
/* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
if (!test_bit(__I40E_DOWN, &pf->state))
i40e_reset_vf(vf, true);
}