Received-SPF: pass (google.com: domain of linux-crypto+bounces-1202-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Mun Chun Yep <mun.chun.yep@intel.com>
To: herbert@gondor.apana.org.au
Cc: linux-crypto@vger.kernel.org,
	qat-linux@intel.com,
	Zhou Furong <furong.zhou@intel.com>,
	Ahsan Atta <ahsan.atta@intel.com>,
	Markas Rapoportas <markas.rapoportas@intel.com>
Subject: [PATCH 3/9] crypto: qat - disable arbitration before reset
Date: Wed,  3 Jan 2024 12:07:16 +0800
Message-Id: <20240103040722.14467-4-mun.chun.yep@intel.com>
In-Reply-To: <20240103040722.14467-1-mun.chun.yep@intel.com>
References: <20240103040722.14467-1-mun.chun.yep@intel.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

From: Zhou Furong <furong.zhou@intel.com>

Disable arbitration to avoid new requests to be processed before
resetting a device.

This is needed so that new requests are not fetched when an error is
detected.

Signed-off-by: Zhou Furong <furong.zhou@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Markas Rapoportas <markas.rapoportas@intel.com>
---
 drivers/crypto/intel/qat/qat_common/adf_aer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/crypto/intel/qat/qat_common/adf_aer.c b/drivers/crypto/intel/qat/qat_common/adf_aer.c
index 22a43b4b8315..acbbd32bd815 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_aer.c
@@ -181,8 +181,16 @@ static void adf_notify_fatal_error_worker(struct work_struct *work)
 	struct adf_fatal_error_data *wq_data =
 			container_of(work, struct adf_fatal_error_data, work);
 	struct adf_accel_dev *accel_dev = wq_data->accel_dev;
+	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 
 	adf_error_notifier(accel_dev);
+
+	if (!accel_dev->is_vf) {
+		/* Disable arbitration to stop processing of new requests */
+		if (hw_device->exit_arb)
+			hw_device->exit_arb(accel_dev);
+	}
+
 	kfree(wq_data);
 }
 
-- 
2.34.1