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ice: delay less

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[ Upstream commit 88bb432a55de8ae62106305083a8bfbb23b01ad2 ]

Shorten the delay for SQ responses, but increase the number of loops.
Max delay time is unchanged, but some operations complete much more
quickly.

In the process, add a new define to make the delay count and delay time
more explicit. Add comments to make things more explicit.

This fixes a problem with VF resets failing on with many VFs.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mitch Williams 2019-11-06 02:05:36 -08:00 • committed by Greg Kroah-Hartman
commit 50786d47f2
2 changed files with 4 additions and 3 deletions
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2
drivers/net/ethernet/intel/ice/ice_controlq.c
View file

@ -948,7 +948,7 @@ ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
if (ice_sq_done(hw, cq))
break;
mdelay(1);
udelay(ICE_CTL_Q_SQ_CMD_USEC);
total_delay++;
} while (total_delay < cq->sq_cmd_timeout);

5
drivers/net/ethernet/intel/ice/ice_controlq.h
View file

@ -31,8 +31,9 @@ enum ice_ctl_q {
ICE_CTL_Q_MAILBOX,
};
/* Control Queue default settings */
#define ICE_CTL_Q_SQ_CMD_TIMEOUT 250 /* msecs */
/* Control Queue timeout settings - max delay 250ms */
#define ICE_CTL_Q_SQ_CMD_TIMEOUT 2500 /* Count 2500 times */
#define ICE_CTL_Q_SQ_CMD_USEC 100 /* Check every 100usec */
struct ice_ctl_q_ring {
void *dma_head; /* Virtual address to DMA head */