Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 119 insertions, 16 deletions

diff --git a/drivers/crypto/intel/qat/qat_common/adf_aer.c b/drivers/crypto/intel/qat/qat_common/adf_aer.c
index 621d14ea3b..04260f61d0 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_aer.c
@@ -7,8 +7,15 @@
 #include <linux/delay.h>
 #include "adf_accel_devices.h"
 #include "adf_common_drv.h"
+#include "adf_pfvf_pf_msg.h"
+
+struct adf_fatal_error_data {
+	struct adf_accel_dev *accel_dev;
+	struct work_struct work;
+};
 
 static struct workqueue_struct *device_reset_wq;
+static struct workqueue_struct *device_sriov_wq;
 
 static pci_ers_result_t adf_error_detected(struct pci_dev *pdev,
 					   pci_channel_state_t state)
@@ -26,6 +33,19 @@ static pci_ers_result_t adf_error_detected(struct pci_dev *pdev,
 		return PCI_ERS_RESULT_DISCONNECT;
 	}
 
+	set_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
+	if (accel_dev->hw_device->exit_arb) {
+		dev_dbg(&pdev->dev, "Disabling arbitration\n");
+		accel_dev->hw_device->exit_arb(accel_dev);
+	}
+	adf_error_notifier(accel_dev);
+	adf_pf2vf_notify_fatal_error(accel_dev);
+	adf_dev_restarting_notify(accel_dev);
+	adf_pf2vf_notify_restarting(accel_dev);
+	adf_pf2vf_wait_for_restarting_complete(accel_dev);
+	pci_clear_master(pdev);
+	adf_dev_down(accel_dev, false);
+
 	return PCI_ERS_RESULT_NEED_RESET;
 }
 
@@ -37,6 +57,13 @@ struct adf_reset_dev_data {
 	struct work_struct reset_work;
 };
 
+/* sriov dev data */
+struct adf_sriov_dev_data {
+	struct adf_accel_dev *accel_dev;
+	struct completion compl;
+	struct work_struct sriov_work;
+};
+
 void adf_reset_sbr(struct adf_accel_dev *accel_dev)
 {
 	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
@@ -82,35 +109,45 @@ void adf_dev_restore(struct adf_accel_dev *accel_dev)
 	}
 }
 
+static void adf_device_sriov_worker(struct work_struct *work)
+{
+	struct adf_sriov_dev_data *sriov_data =
+		container_of(work, struct adf_sriov_dev_data, sriov_work);
+
+	adf_reenable_sriov(sriov_data->accel_dev);
+	complete(&sriov_data->compl);
+}
+
 static void adf_device_reset_worker(struct work_struct *work)
 {
 	struct adf_reset_dev_data *reset_data =
 		  container_of(work, struct adf_reset_dev_data, reset_work);
 	struct adf_accel_dev *accel_dev = reset_data->accel_dev;
+	unsigned long wait_jiffies = msecs_to_jiffies(10000);
+	struct adf_sriov_dev_data sriov_data;
 
 	adf_dev_restarting_notify(accel_dev);
 	if (adf_dev_restart(accel_dev)) {
 		/* The device hanged and we can't restart it so stop here */
 		dev_err(&GET_DEV(accel_dev), "Restart device failed\n");
-		if (reset_data->mode == ADF_DEV_RESET_ASYNC ||
-		    completion_done(&reset_data->compl))
+		if (reset_data->mode == ADF_DEV_RESET_ASYNC)
 			kfree(reset_data);
 		WARN(1, "QAT: device restart failed. Device is unusable\n");
 		return;
 	}
+
+	sriov_data.accel_dev = accel_dev;
+	init_completion(&sriov_data.compl);
+	INIT_WORK(&sriov_data.sriov_work, adf_device_sriov_worker);
+	queue_work(device_sriov_wq, &sriov_data.sriov_work);
+	if (wait_for_completion_timeout(&sriov_data.compl, wait_jiffies))
+		adf_pf2vf_notify_restarted(accel_dev);
+
 	adf_dev_restarted_notify(accel_dev);
 	clear_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
 
-	/*
-	 * The dev is back alive. Notify the caller if in sync mode
-	 *
-	 * If device restart will take a more time than expected,
-	 * the schedule_reset() function can timeout and exit. This can be
-	 * detected by calling the completion_done() function. In this case
-	 * the reset_data structure needs to be freed here.
-	 */
-	if (reset_data->mode == ADF_DEV_RESET_ASYNC ||
-	    completion_done(&reset_data->compl))
+	/* The dev is back alive. Notify the caller if in sync mode */
+	if (reset_data->mode == ADF_DEV_RESET_ASYNC)
 		kfree(reset_data);
 	else
 		complete(&reset_data->compl);
@@ -145,10 +182,10 @@ static int adf_dev_aer_schedule_reset(struct adf_accel_dev *accel_dev,
 		if (!timeout) {
 			dev_err(&GET_DEV(accel_dev),
 				"Reset device timeout expired\n");
+			cancel_work_sync(&reset_data->reset_work);
 			ret = -EFAULT;
-		} else {
-			kfree(reset_data);
 		}
+		kfree(reset_data);
 		return ret;
 	}
 	return 0;
@@ -157,14 +194,25 @@ static int adf_dev_aer_schedule_reset(struct adf_accel_dev *accel_dev,
 static pci_ers_result_t adf_slot_reset(struct pci_dev *pdev)
 {
 	struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
+	int res = 0;
 
 	if (!accel_dev) {
 		pr_err("QAT: Can't find acceleration device\n");
 		return PCI_ERS_RESULT_DISCONNECT;
 	}
-	if (adf_dev_aer_schedule_reset(accel_dev, ADF_DEV_RESET_SYNC))
+
+	if (!pdev->is_busmaster)
+		pci_set_master(pdev);
+	pci_restore_state(pdev);
+	pci_save_state(pdev);
+	res = adf_dev_up(accel_dev, false);
+	if (res && res != -EALREADY)
 		return PCI_ERS_RESULT_DISCONNECT;
 
+	adf_reenable_sriov(accel_dev);
+	adf_pf2vf_notify_restarted(accel_dev);
+	adf_dev_restarted_notify(accel_dev);
+	clear_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
 	return PCI_ERS_RESULT_RECOVERED;
 }
 
@@ -181,11 +229,62 @@ const struct pci_error_handlers adf_err_handler = {
 };
 EXPORT_SYMBOL_GPL(adf_err_handler);
 
+int adf_dev_autoreset(struct adf_accel_dev *accel_dev)
+{
+	if (accel_dev->autoreset_on_error)
+		return adf_dev_aer_schedule_reset(accel_dev, ADF_DEV_RESET_ASYNC);
+
+	return 0;
+}
+
+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 (accel_dev->autoreset_on_error && hw_device->exit_arb)
+			hw_device->exit_arb(accel_dev);
+		if (accel_dev->pf.vf_info)
+			adf_pf2vf_notify_fatal_error(accel_dev);
+		adf_dev_autoreset(accel_dev);
+	}
+
+	kfree(wq_data);
+}
+
+int adf_notify_fatal_error(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fatal_error_data *wq_data;
+
+	wq_data = kzalloc(sizeof(*wq_data), GFP_ATOMIC);
+	if (!wq_data)
+		return -ENOMEM;
+
+	wq_data->accel_dev = accel_dev;
+	INIT_WORK(&wq_data->work, adf_notify_fatal_error_worker);
+	adf_misc_wq_queue_work(&wq_data->work);
+
+	return 0;
+}
+
 int adf_init_aer(void)
 {
 	device_reset_wq = alloc_workqueue("qat_device_reset_wq",
 					  WQ_MEM_RECLAIM, 0);
-	return !device_reset_wq ? -EFAULT : 0;
+	if (!device_reset_wq)
+		return -EFAULT;
+
+	device_sriov_wq = alloc_workqueue("qat_device_sriov_wq", 0, 0);
+	if (!device_sriov_wq)
+		return -EFAULT;
+
+	return 0;
 }
 
 void adf_exit_aer(void)
@@ -193,4 +292,8 @@ void adf_exit_aer(void)
 	if (device_reset_wq)
 		destroy_workqueue(device_reset_wq);
 	device_reset_wq = NULL;
+
+	if (device_sriov_wq)
+		destroy_workqueue(device_sriov_wq);
+	device_sriov_wq = NULL;
 }