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i40e/i40evf: Reset Head and Tail on AQ initialization

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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>
This commit is contained in:
Michal Kosiarz 2014-06-03 23:50:13 +00:00 committed by Jeff Kirsher
parent 407e063c92
commit 80a977e793
2 changed files with 42 additions and 0 deletions
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21
drivers/net/ethernet/intel/i40e/i40e_adminq.c
View file

@ -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,

21
drivers/net/ethernet/intel/i40evf/i40e_adminq.c
View file

@ -294,6 +294,10 @@ 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,
@ -332,6 +336,10 @@ 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,
@ -630,6 +638,10 @@ 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;
@ -690,6 +702,15 @@ i40e_status i40evf_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,