diff mbox series

[iwl-next] ice: Distinguish driver reset and removal for AQ shutdown

Message ID 20240614103811.1178779-1-marcin.szycik@linux.intel.com
State Accepted
Delegated to: Anthony Nguyen
Headers show
Series [iwl-next] ice: Distinguish driver reset and removal for AQ shutdown | expand

Commit Message

Marcin Szycik June 14, 2024, 10:38 a.m. UTC
From: Piotr Gardocki <piotrx.gardocki@intel.com>

Admin queue command for shutdown AQ contains a flag to indicate driver
unload. However, the flag is always set in the driver, even for resets. It
can cause the firmware to consider driver as unloaded once the PF reset is
triggered on all ports of device, which could lead to unexpected results.

Add an additional function parameter to functions that shutdown AQ,
indicating whether the driver is actually unloading.

Reviewed-by: Ahmed Zaki <ahmed.zaki@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Piotr Gardocki <piotrx.gardocki@intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_common.h   |  2 +-
 drivers/net/ethernet/intel/ice/ice_controlq.c | 19 +++++++++++--------
 drivers/net/ethernet/intel/ice/ice_main.c     |  6 +++---
 3 files changed, 15 insertions(+), 12 deletions(-)

Comments

Simon Horman June 17, 2024, 2:01 p.m. UTC | #1
On Fri, Jun 14, 2024 at 12:38:11PM +0200, Marcin Szycik wrote:
> From: Piotr Gardocki <piotrx.gardocki@intel.com>
> 
> Admin queue command for shutdown AQ contains a flag to indicate driver
> unload. However, the flag is always set in the driver, even for resets. It
> can cause the firmware to consider driver as unloaded once the PF reset is
> triggered on all ports of device, which could lead to unexpected results.
> 
> Add an additional function parameter to functions that shutdown AQ,
> indicating whether the driver is actually unloading.
> 
> Reviewed-by: Ahmed Zaki <ahmed.zaki@intel.com>
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Piotr Gardocki <piotrx.gardocki@intel.com>
> Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>

Reviewed-by: Simon Horman <horms@kernel.org>
Pucha, HimasekharX Reddy June 21, 2024, 4:27 a.m. UTC | #2
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Marcin Szycik
> Sent: Friday, June 14, 2024 4:08 PM
> To: intel-wired-lan@lists.osuosl.org
> Cc: Gardocki, PiotrX <piotrx.gardocki@intel.com>; netdev@vger.kernel.org; Marcin Szycik <marcin.szycik@linux.intel.com>; Zaki, Ahmed <ahmed.zaki@intel.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@intel.com>
> Subject: [Intel-wired-lan] [PATCH iwl-next] ice: Distinguish driver reset and removal for AQ shutdown
>
> From: Piotr Gardocki <piotrx.gardocki@intel.com>
>
> Admin queue command for shutdown AQ contains a flag to indicate driver unload. However, the flag is always set in the driver, even for resets. It can cause the firmware to consider driver as unloaded once the PF reset is triggered on all ports of device, which could lead to unexpected results.
>
> Add an additional function parameter to functions that shutdown AQ, indicating whether the driver is actually unloading.
>
> Reviewed-by: Ahmed Zaki <ahmed.zaki@intel.com>
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Piotr Gardocki <piotrx.gardocki@intel.com>
> Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_common.h   |  2 +-
>  drivers/net/ethernet/intel/ice/ice_controlq.c | 19 +++++++++++--------
>  drivers/net/ethernet/intel/ice/ice_main.c     |  6 +++---
>  3 files changed, 15 insertions(+), 12 deletions(-)
>

Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 9a91f71ab727..e03475408a02 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -24,7 +24,7 @@  int ice_check_reset(struct ice_hw *hw);
 int ice_reset(struct ice_hw *hw, enum ice_reset_req req);
 int ice_create_all_ctrlq(struct ice_hw *hw);
 int ice_init_all_ctrlq(struct ice_hw *hw);
-void ice_shutdown_all_ctrlq(struct ice_hw *hw);
+void ice_shutdown_all_ctrlq(struct ice_hw *hw, bool unloading);
 void ice_destroy_all_ctrlq(struct ice_hw *hw);
 int
 ice_clean_rq_elem(struct ice_hw *hw, struct ice_ctl_q_info *cq,
diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c
index ca80b34f2f8a..ffaa6511c455 100644
--- a/drivers/net/ethernet/intel/ice/ice_controlq.c
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.c
@@ -687,10 +687,12 @@  struct ice_ctl_q_info *ice_get_sbq(struct ice_hw *hw)
  * ice_shutdown_ctrlq - shutdown routine for any control queue
  * @hw: pointer to the hardware structure
  * @q_type: specific Control queue type
+ * @unloading: is the driver unloading itself
  *
  * NOTE: this function does not destroy the control queue locks.
  */
-static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
+static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type,
+			       bool unloading)
 {
 	struct ice_ctl_q_info *cq;
 
@@ -698,7 +700,7 @@  static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
 	case ICE_CTL_Q_ADMIN:
 		cq = &hw->adminq;
 		if (ice_check_sq_alive(hw, cq))
-			ice_aq_q_shutdown(hw, true);
+			ice_aq_q_shutdown(hw, unloading);
 		break;
 	case ICE_CTL_Q_SB:
 		cq = &hw->sbq;
@@ -717,20 +719,21 @@  static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
 /**
  * ice_shutdown_all_ctrlq - shutdown routine for all control queues
  * @hw: pointer to the hardware structure
+ * @unloading: is the driver unloading itself
  *
  * NOTE: this function does not destroy the control queue locks. The driver
  * may call this at runtime to shutdown and later restart control queues, such
  * as in response to a reset event.
  */
-void ice_shutdown_all_ctrlq(struct ice_hw *hw)
+void ice_shutdown_all_ctrlq(struct ice_hw *hw, bool unloading)
 {
 	/* Shutdown FW admin queue */
-	ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
+	ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN, unloading);
 	/* Shutdown PHY Sideband */
 	if (ice_is_sbq_supported(hw))
-		ice_shutdown_ctrlq(hw, ICE_CTL_Q_SB);
+		ice_shutdown_ctrlq(hw, ICE_CTL_Q_SB, unloading);
 	/* Shutdown PF-VF Mailbox */
-	ice_shutdown_ctrlq(hw, ICE_CTL_Q_MAILBOX);
+	ice_shutdown_ctrlq(hw, ICE_CTL_Q_MAILBOX, unloading);
 }
 
 /**
@@ -762,7 +765,7 @@  int ice_init_all_ctrlq(struct ice_hw *hw)
 			break;
 
 		ice_debug(hw, ICE_DBG_AQ_MSG, "Retry Admin Queue init due to FW critical error\n");
-		ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
+		ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN, true);
 		msleep(ICE_CTL_Q_ADMIN_INIT_MSEC);
 	} while (retry++ < ICE_CTL_Q_ADMIN_INIT_TIMEOUT);
 
@@ -843,7 +846,7 @@  static void ice_destroy_ctrlq_locks(struct ice_ctl_q_info *cq)
 void ice_destroy_all_ctrlq(struct ice_hw *hw)
 {
 	/* shut down all the control queues first */
-	ice_shutdown_all_ctrlq(hw);
+	ice_shutdown_all_ctrlq(hw, true);
 
 	ice_destroy_ctrlq_locks(&hw->adminq);
 	if (ice_is_sbq_supported(hw))
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index f38a30775a2e..5e84de0d4799 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -624,7 +624,7 @@  ice_prepare_for_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
 	if (hw->port_info)
 		ice_sched_clear_port(hw->port_info);
 
-	ice_shutdown_all_ctrlq(hw);
+	ice_shutdown_all_ctrlq(hw, false);
 
 	set_bit(ICE_PREPARED_FOR_RESET, pf->state);
 }
@@ -5484,7 +5484,7 @@  static void ice_prepare_for_shutdown(struct ice_pf *pf)
 		if (pf->vsi[v])
 			pf->vsi[v]->vsi_num = 0;
 
-	ice_shutdown_all_ctrlq(hw);
+	ice_shutdown_all_ctrlq(hw, true);
 }
 
 /**
@@ -7755,7 +7755,7 @@  static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
 err_sched_init_port:
 	ice_sched_cleanup_all(hw);
 err_init_ctrlq:
-	ice_shutdown_all_ctrlq(hw);
+	ice_shutdown_all_ctrlq(hw, false);
 	set_bit(ICE_RESET_FAILED, pf->state);
 clear_recovery:
 	/* set this bit in PF state to control service task scheduling */