i40e: poll firmware slower
The code was polling the firmware tail register for completion every
10 microseconds, which is way faster than the firmware can respond.
This changes the poll interval to 1ms, which reduces polling CPU
utilization, and the number of times we loop.
The maximum delay is still 100ms.
Change-ID: I4bbfa6b66d802890baf8b4154061e55942b90958
Signed-off-by: Kamil Krawczyk <kamil.krawczyk@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_adminq.c b/drivers/net/ethernet/intel/i40e/i40e_adminq.c
index 72f5d25..f7f6206 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_adminq.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_adminq.c
@@ -853,7 +853,6 @@
*/
if (!details->async && !details->postpone) {
u32 total_delay = 0;
- u32 delay_len = 10;
do {
/* AQ designers suggest use of head for better
@@ -861,9 +860,8 @@
*/
if (i40e_asq_done(hw))
break;
- /* ugh! delay while spin_lock */
- udelay(delay_len);
- total_delay += delay_len;
+ usleep_range(1000, 2000);
+ total_delay++;
} while (total_delay < hw->aq.asq_cmd_timeout);
}
diff --git a/drivers/net/ethernet/intel/i40e/i40e_adminq.h b/drivers/net/ethernet/intel/i40e/i40e_adminq.h
index ba38a89..df0bd09 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_adminq.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_adminq.h
@@ -141,7 +141,7 @@
/* general information */
#define I40E_AQ_LARGE_BUF 512
-#define I40E_ASQ_CMD_TIMEOUT 100000 /* usecs */
+#define I40E_ASQ_CMD_TIMEOUT 100 /* msecs */
void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
u16 opcode);
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
index f206be9..500ca21 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
@@ -801,7 +801,6 @@
*/
if (!details->async && !details->postpone) {
u32 total_delay = 0;
- u32 delay_len = 10;
do {
/* AQ designers suggest use of head for better
@@ -809,9 +808,8 @@
*/
if (i40evf_asq_done(hw))
break;
- /* ugh! delay while spin_lock */
- udelay(delay_len);
- total_delay += delay_len;
+ usleep_range(1000, 2000);
+ total_delay++;
} while (total_delay < hw->aq.asq_cmd_timeout);
}
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_adminq.h b/drivers/net/ethernet/intel/i40evf/i40e_adminq.h
index 91a5c5b..f40cfac 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_adminq.h
+++ b/drivers/net/ethernet/intel/i40evf/i40e_adminq.h
@@ -141,7 +141,7 @@
/* general information */
#define I40E_AQ_LARGE_BUF 512
-#define I40E_ASQ_CMD_TIMEOUT 100000 /* usecs */
+#define I40E_ASQ_CMD_TIMEOUT 100 /* msecs */
void i40evf_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
u16 opcode);