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_shutdown(accel_dev);
if (adf_dev_init(accel_dev) || 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);
}
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)) {
dev_info(&GET_DEV(accel_dev),
"Starting acceleration device qat_dev%d.\n",
ctl_data->device_id);
ret = adf_dev_init(accel_dev);
if (!ret)
ret = adf_dev_start(accel_dev);
} else {
dev_info(&GET_DEV(accel_dev),
"Acceleration device qat_dev%d already started.\n",
ctl_data->device_id);
}
if (ret) {
dev_err(&GET_DEV(accel_dev), "Failed to start qat_dev%d\n",
ctl_data->device_id);
adf_dev_stop(accel_dev);
adf_dev_shutdown(accel_dev);
}
out:
kfree(ctl_data);
return ret;
}
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;
}
