Esempio n. 1
0
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;

	adf_dev_restarting_notify(accel_dev);
	adf_dev_stop(accel_dev);
	adf_dev_restore(accel_dev);
	if (adf_dev_start(accel_dev)) {
		/* The device hanged and we can't restart it so stop here */
		dev_err(&GET_DEV(accel_dev), "Restart device failed\n");
		kfree(reset_data);
		WARN(1, "QAT: device restart failed. Device is unusable\n");
		return;
	}
	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 (reset_data->mode == ADF_DEV_RESET_SYNC)
		complete(&reset_data->compl);
	else
		kfree(reset_data);
}
Esempio n. 2
0
static int adf_ctl_ioctl_dev_start(struct file *fp, unsigned int cmd,
				   unsigned long arg)
{
	int ret;
	struct adf_user_cfg_ctl_data *ctl_data;
	struct adf_accel_dev *accel_dev;

	ret = adf_ctl_alloc_resources(&ctl_data, arg);
	if (ret)
		return ret;

	accel_dev = adf_devmgr_get_dev_by_id(ctl_data->device_id);
	if (!accel_dev) {
		pr_err("QAT: Device %d not found\n", ctl_data->device_id);
		ret = -ENODEV;
		goto out;
	}

	if (!adf_dev_started(accel_dev)) {
		pr_info("QAT: Starting acceleration device qat_dev%d.\n",
			ctl_data->device_id);
		ret = adf_dev_start(accel_dev);
	} else {
		pr_info("QAT: Acceleration device qat_dev%d already started.\n",
			ctl_data->device_id);
	}
	if (ret) {
		pr_err("QAT: Failed to start qat_dev%d\n", ctl_data->device_id);
		adf_dev_stop(accel_dev);
	}
out:
	kfree(ctl_data);
	return ret;
}
Esempio n. 3
0
static void adf_remove(struct pci_dev *pdev)
{
	struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);

	if (!accel_dev) {
		pr_err("QAT: Driver removal failed\n");
		return;
	}
	if (adf_dev_stop(accel_dev))
		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
	adf_disable_aer(accel_dev);
	adf_cleanup_accel(accel_dev);
}
Esempio n. 4
0
static void adf_dev_stop_async(struct work_struct *work)
{
	struct adf_vf_stop_data *stop_data =
		container_of(work, struct adf_vf_stop_data, work);
	struct adf_accel_dev *accel_dev = stop_data->accel_dev;

	adf_dev_stop(accel_dev);
	adf_dev_shutdown(accel_dev);

	/* Re-enable PF2VF interrupts */
	adf_enable_pf2vf_interrupts(accel_dev);
	kfree(stop_data);
}
Esempio n. 5
0
static int adf_ctl_stop_devices(uint32_t id)
{
	struct list_head *itr, *head = adf_devmgr_get_head();
	int ret = 0;

	list_for_each(itr, head) {
		struct adf_accel_dev *accel_dev =
				list_entry(itr, struct adf_accel_dev, list);
		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
			if (!adf_dev_started(accel_dev))
				continue;

			if (adf_dev_stop(accel_dev)) {
				pr_err("QAT: Failed to stop qat_dev%d\n", id);
				ret = -EFAULT;
			}
		}
	}
	return ret;
}
Esempio n. 6
0
static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct adf_accel_dev *accel_dev;
	struct adf_accel_pci *accel_pci_dev;
	struct adf_hw_device_data *hw_data;
	char name[ADF_DEVICE_NAME_LENGTH];
	unsigned int i, bar_nr;
	int ret;

	switch (ent->device) {
	case ADF_DH895XCC_PCI_DEVICE_ID:
		break;
	default:
		dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
		return -ENODEV;
	}

	if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {
		/* If the accelerator is connected to a node with no memory
		 * there is no point in using the accelerator since the remote
		 * memory transaction will be very slow. */
		dev_err(&pdev->dev, "Invalid NUMA configuration.\n");
		return -EINVAL;
	}

	accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
				 dev_to_node(&pdev->dev));
	if (!accel_dev)
		return -ENOMEM;

	INIT_LIST_HEAD(&accel_dev->crypto_list);

	/* Add accel device to accel table.
	 * This should be called before adf_cleanup_accel is called */
	if (adf_devmgr_add_dev(accel_dev)) {
		dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
		kfree(accel_dev);
		return -EFAULT;
	}

	accel_dev->owner = THIS_MODULE;
	/* Allocate and configure device configuration structure */
	hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
			       dev_to_node(&pdev->dev));
	if (!hw_data) {
		ret = -ENOMEM;
		goto out_err;
	}

	accel_dev->hw_device = hw_data;
	switch (ent->device) {
	case ADF_DH895XCC_PCI_DEVICE_ID:
		adf_init_hw_data_dh895xcc(accel_dev->hw_device);
		break;
	default:
		return -ENODEV;
	}
	accel_pci_dev = &accel_dev->accel_pci_dev;
	pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
	pci_read_config_dword(pdev, ADF_DH895XCC_FUSECTL_OFFSET,
			      &hw_data->fuses);

	/* Get Accelerators and Accelerators Engines masks */
	hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
	hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
	accel_pci_dev->sku = hw_data->get_sku(hw_data);
	accel_pci_dev->pci_dev = pdev;
	/* If the device has no acceleration engines then ignore it. */
	if (!hw_data->accel_mask || !hw_data->ae_mask ||
	    ((~hw_data->ae_mask) & 0x01)) {
		dev_err(&pdev->dev, "No acceleration units found");
		ret = -EFAULT;
		goto out_err;
	}

	/* Create dev top level debugfs entry */
	snprintf(name, sizeof(name), "%s%s_dev%d", ADF_DEVICE_NAME_PREFIX,
		 hw_data->dev_class->name, hw_data->instance_id);
	accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
	if (!accel_dev->debugfs_dir) {
		dev_err(&pdev->dev, "Could not create debugfs dir\n");
		ret = -EINVAL;
		goto out_err;
	}

	/* Create device configuration table */
	ret = adf_cfg_dev_add(accel_dev);
	if (ret)
		goto out_err;

	pcie_set_readrq(pdev, 1024);

	/* enable PCI device */
	if (pci_enable_device(pdev)) {
		ret = -EFAULT;
		goto out_err;
	}

	/* set dma identifier */
	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
		if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
			dev_err(&pdev->dev, "No usable DMA configuration\n");
			ret = -EFAULT;
			goto out_err;
		} else {
			pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
		}

	} else {
		pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
	}

	if (pci_request_regions(pdev, adf_driver_name)) {
		ret = -EFAULT;
		goto out_err;
	}

	/* Read accelerator capabilities mask */
	pci_read_config_dword(pdev, ADF_DH895XCC_LEGFUSE_OFFSET,
			      &hw_data->accel_capabilities_mask);

	/* Find and map all the device's BARS */
	for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
		struct adf_bar *bar = &accel_pci_dev->pci_bars[i];

		bar_nr = i * 2;
		bar->base_addr = pci_resource_start(pdev, bar_nr);
		if (!bar->base_addr)
			break;
		bar->size = pci_resource_len(pdev, bar_nr);
		bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
		if (!bar->virt_addr) {
			dev_err(&pdev->dev, "Failed to map BAR %d\n", i);
			ret = -EFAULT;
			goto out_err;
		}
	}
	pci_set_master(pdev);

	if (adf_enable_aer(accel_dev, &adf_driver)) {
		dev_err(&pdev->dev, "Failed to enable aer\n");
		ret = -EFAULT;
		goto out_err;
	}

	if (pci_save_state(pdev)) {
		dev_err(&pdev->dev, "Failed to save pci state\n");
		ret = -ENOMEM;
		goto out_err;
	}

	ret = adf_dev_configure(accel_dev);
	if (ret)
		goto out_err;

	ret = adf_dev_init(accel_dev);
	if (ret)
		goto out_err;

	ret = adf_dev_start(accel_dev);
	if (ret) {
		adf_dev_stop(accel_dev);
		goto out_err;
	}

	return 0;
out_err:
	adf_cleanup_accel(accel_dev);
	return ret;
}