From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Date: Tue, 10 Dec 2019 16:06:00 -0500 Subject: [Intel-wired-lan] [PATCH AUTOSEL 5.4 255/350] ice: delay less In-Reply-To: <20191210210735.9077-1-sashal@kernel.org> References: <20191210210735.9077-1-sashal@kernel.org> Message-ID: <20191210210735.9077-216-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: From: Mitch Williams [ 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 Signed-off-by: Tony Nguyen Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_controlq.c | 2 +- drivers/net/ethernet/intel/ice/ice_controlq.h | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c index 2353166c654ea..c68709c7ef81d 100644 --- a/drivers/net/ethernet/intel/ice/ice_controlq.c +++ b/drivers/net/ethernet/intel/ice/ice_controlq.c @@ -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); diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.h b/drivers/net/ethernet/intel/ice/ice_controlq.h index 44945c2165d80..4df9da3591359 100644 --- a/drivers/net/ethernet/intel/ice/ice_controlq.h +++ b/drivers/net/ethernet/intel/ice/ice_controlq.h @@ -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 */ -- 2.20.1