diff options
| author |   Michal Kosiarz <michal.kosiarz@intel.com> | 2014-06-03 23:50:13 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-06-19 20:22:03 -0700 |
| commit | 80a977e79373c8e46d88800a4e2c0cfeeb8d925b (patch) | |
| tree | 9f0977d83be0d38421e381646ca73269411c4953 /drivers/net/ethernet/intel/i40e/i40e_adminq.c | |
| parent | i40e: workaround NVM GLQF_HKEY (diff) | |
| download | linux-dev-80a977e79373c8e46d88800a4e2c0cfeeb8d925b.tar.xz linux-dev-80a977e79373c8e46d88800a4e2c0cfeeb8d925b.zip | |
i40e/i40evf: Reset Head and Tail on AQ initialization
Reset head and tail on admin queue initialization where H/T are
not reset by HW.
Change-ID: I6db8a2dd3f05ce66410a92cce016191add04760e
Signed-off-by: Michal Kosiarz <michal.kosiarz@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_adminq.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_adminq.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_adminq.c b/drivers/net/ethernet/intel/i40e/i40e_adminq.c index 7a027499fc57..40381abb873b 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_adminq.c +++ b/drivers/net/ethernet/intel/i40e/i40e_adminq.c @@ -296,6 +296,10 @@ static i40e_status i40e_config_asq_regs(struct i40e_hw *hw) i40e_status ret_code = 0; u32 reg = 0; + /* Clear Head and Tail */ + wr32(hw, hw->aq.asq.head, 0); + wr32(hw, hw->aq.asq.tail, 0); + if (hw->mac.type == I40E_MAC_VF) { /* configure the transmit queue */ wr32(hw, I40E_VF_ATQBAH1, @@ -334,6 +338,10 @@ static i40e_status i40e_config_arq_regs(struct i40e_hw *hw) i40e_status ret_code = 0; u32 reg = 0; + /* Clear Head and Tail */ + wr32(hw, hw->aq.arq.head, 0); + wr32(hw, hw->aq.arq.tail, 0); + if (hw->mac.type == I40E_MAC_VF) { /* configure the receive queue */ wr32(hw, I40E_VF_ARQBAH1, @@ -677,6 +685,10 @@ static u16 i40e_clean_asq(struct i40e_hw *hw) desc = I40E_ADMINQ_DESC(*asq, ntc); details = I40E_ADMINQ_DETAILS(*asq, ntc); while (rd32(hw, hw->aq.asq.head) != ntc) { + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, + "%s: ntc %d head %d.\n", __func__, ntc, + rd32(hw, hw->aq.asq.head)); + if (details->callback) { I40E_ADMINQ_CALLBACK cb_func = (I40E_ADMINQ_CALLBACK)details->callback; @@ -736,6 +748,15 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, struct i40e_aq_desc *desc_on_ring; bool cmd_completed = false; u16 retval = 0; + u32 val = 0; + + val = rd32(hw, hw->aq.asq.head); + if (val >= hw->aq.num_asq_entries) { + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, + "AQTX: head overrun at %d\n", val); + status = I40E_ERR_QUEUE_EMPTY; + goto asq_send_command_exit; + } if (hw->aq.asq.count == 0) { i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, |