releases/6.10.13/crypto-qat-fix-recovery-flow-for-vfs.patch

From d1dd2fa1e80add52e4b1983662da0884c7ad1955 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Wed, 17 Jul 2024 07:44:58 -0400
Subject: crypto: qat - fix recovery flow for VFs

From: Michal Witwicki <michal.witwicki@intel.com>

[ Upstream commit 6f1b5236348fced7e7691a933327694b4106bc39 ]

When the PFVF protocol was updated to support version 5, i.e.
ADF_PFVF_COMPAT_FALLBACK, the compatibility version for the VF was
updated without supporting the message RESTARTING_COMPLETE required for
such version.

Add support for the ADF_VF2PF_MSGTYPE_RESTARTING_COMPLETE message in the
VF drivers. This message is sent by the VF driver to the PF to notify
the completion of the shutdown flow.

Fixes: ec26f8e6c784 ("crypto: qat - update PFVF protocol for recovery")
Signed-off-by: Michal Witwicki <michal.witwicki@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../crypto/intel/qat/qat_common/adf_pfvf_vf_msg.c  | 14 ++++++++++++++
 .../crypto/intel/qat/qat_common/adf_pfvf_vf_msg.h  |  1 +
 drivers/crypto/intel/qat/qat_common/adf_vf_isr.c   |  2 ++
 3 files changed, 17 insertions(+)

diff --git a/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.c b/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.c
index 1141258db4b65..10c91e56d6be3 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.c
@@ -48,6 +48,20 @@ void adf_vf2pf_notify_shutdown(struct adf_accel_dev *accel_dev)
 }
 EXPORT_SYMBOL_GPL(adf_vf2pf_notify_shutdown);
 
+void adf_vf2pf_notify_restart_complete(struct adf_accel_dev *accel_dev)
+{
+	struct pfvf_message msg = { .type = ADF_VF2PF_MSGTYPE_RESTARTING_COMPLETE };
+
+	/* Check compatibility version */
+	if (accel_dev->vf.pf_compat_ver < ADF_PFVF_COMPAT_FALLBACK)
+		return;
+
+	if (adf_send_vf2pf_msg(accel_dev, msg))
+		dev_err(&GET_DEV(accel_dev),
+			"Failed to send Restarting complete event to PF\n");
+}
+EXPORT_SYMBOL_GPL(adf_vf2pf_notify_restart_complete);
+
 int adf_vf2pf_request_version(struct adf_accel_dev *accel_dev)
 {
 	u8 pf_version;
diff --git a/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.h b/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.h
index 71bc0e3f1d933..d79340ab3134f 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.h
+++ b/drivers/crypto/intel/qat/qat_common/adf_pfvf_vf_msg.h
@@ -6,6 +6,7 @@
 #if defined(CONFIG_PCI_IOV)
 int adf_vf2pf_notify_init(struct adf_accel_dev *accel_dev);
 void adf_vf2pf_notify_shutdown(struct adf_accel_dev *accel_dev);
+void adf_vf2pf_notify_restart_complete(struct adf_accel_dev *accel_dev);
 int adf_vf2pf_request_version(struct adf_accel_dev *accel_dev);
 int adf_vf2pf_get_capabilities(struct adf_accel_dev *accel_dev);
 int adf_vf2pf_get_ring_to_svc(struct adf_accel_dev *accel_dev);
diff --git a/drivers/crypto/intel/qat/qat_common/adf_vf_isr.c b/drivers/crypto/intel/qat/qat_common/adf_vf_isr.c
index cdbb2d687b1b0..4ab9ac3315195 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_vf_isr.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_vf_isr.c
@@ -13,6 +13,7 @@
 #include "adf_cfg.h"
 #include "adf_cfg_strings.h"
 #include "adf_cfg_common.h"
+#include "adf_pfvf_vf_msg.h"
 #include "adf_transport_access_macros.h"
 #include "adf_transport_internal.h"
 
@@ -75,6 +76,7 @@ static void adf_dev_stop_async(struct work_struct *work)
 
 	/* Re-enable PF2VF interrupts */
 	adf_enable_pf2vf_interrupts(accel_dev);
+	adf_vf2pf_notify_restart_complete(accel_dev);
 	kfree(stop_data);
 }
 
-- 
2.43.0