Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 475 insertions, 0 deletions

diff --git a/drivers/crypto/intel/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/intel/qat/qat_common/adf_ctl_drv.c
new file mode 100644
index 0000000000..29c4422f24
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_ctl_drv.c
@@ -0,0 +1,475 @@
+// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
+/* Copyright(c) 2014 - 2020 Intel Corporation */
+
+#include <crypto/algapi.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/bitops.h>
+#include <linux/pci.h>
+#include <linux/cdev.h>
+#include <linux/uaccess.h>
+
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_cfg.h"
+#include "adf_cfg_common.h"
+#include "adf_cfg_user.h"
+
+#define ADF_CFG_MAX_SECTION 512
+#define ADF_CFG_MAX_KEY_VAL 256
+
+#define DEVICE_NAME "qat_adf_ctl"
+
+static DEFINE_MUTEX(adf_ctl_lock);
+static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
+
+static const struct file_operations adf_ctl_ops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = adf_ctl_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
+};
+
+struct adf_ctl_drv_info {
+	unsigned int major;
+	struct cdev drv_cdev;
+	struct class *drv_class;
+};
+
+static struct adf_ctl_drv_info adf_ctl_drv;
+
+static void adf_chr_drv_destroy(void)
+{
+	device_destroy(adf_ctl_drv.drv_class, MKDEV(adf_ctl_drv.major, 0));
+	cdev_del(&adf_ctl_drv.drv_cdev);
+	class_destroy(adf_ctl_drv.drv_class);
+	unregister_chrdev_region(MKDEV(adf_ctl_drv.major, 0), 1);
+}
+
+static int adf_chr_drv_create(void)
+{
+	dev_t dev_id;
+	struct device *drv_device;
+
+	if (alloc_chrdev_region(&dev_id, 0, 1, DEVICE_NAME)) {
+		pr_err("QAT: unable to allocate chrdev region\n");
+		return -EFAULT;
+	}
+
+	adf_ctl_drv.drv_class = class_create(DEVICE_NAME);
+	if (IS_ERR(adf_ctl_drv.drv_class)) {
+		pr_err("QAT: class_create failed for adf_ctl\n");
+		goto err_chrdev_unreg;
+	}
+	adf_ctl_drv.major = MAJOR(dev_id);
+	cdev_init(&adf_ctl_drv.drv_cdev, &adf_ctl_ops);
+	if (cdev_add(&adf_ctl_drv.drv_cdev, dev_id, 1)) {
+		pr_err("QAT: cdev add failed\n");
+		goto err_class_destr;
+	}
+
+	drv_device = device_create(adf_ctl_drv.drv_class, NULL,
+				   MKDEV(adf_ctl_drv.major, 0),
+				   NULL, DEVICE_NAME);
+	if (IS_ERR(drv_device)) {
+		pr_err("QAT: failed to create device\n");
+		goto err_cdev_del;
+	}
+	return 0;
+err_cdev_del:
+	cdev_del(&adf_ctl_drv.drv_cdev);
+err_class_destr:
+	class_destroy(adf_ctl_drv.drv_class);
+err_chrdev_unreg:
+	unregister_chrdev_region(dev_id, 1);
+	return -EFAULT;
+}
+
+static int adf_ctl_alloc_resources(struct adf_user_cfg_ctl_data **ctl_data,
+				   unsigned long arg)
+{
+	struct adf_user_cfg_ctl_data *cfg_data;
+
+	cfg_data = kzalloc(sizeof(*cfg_data), GFP_KERNEL);
+	if (!cfg_data)
+		return -ENOMEM;
+
+	/* Initialize device id to NO DEVICE as 0 is a valid device id */
+	cfg_data->device_id = ADF_CFG_NO_DEVICE;
+
+	if (copy_from_user(cfg_data, (void __user *)arg, sizeof(*cfg_data))) {
+		pr_err("QAT: failed to copy from user cfg_data.\n");
+		kfree(cfg_data);
+		return -EIO;
+	}
+
+	*ctl_data = cfg_data;
+	return 0;
+}
+
+static int adf_add_key_value_data(struct adf_accel_dev *accel_dev,
+				  const char *section,
+				  const struct adf_user_cfg_key_val *key_val)
+{
+	if (key_val->type == ADF_HEX) {
+		long *ptr = (long *)key_val->val;
+		long val = *ptr;
+
+		if (adf_cfg_add_key_value_param(accel_dev, section,
+						key_val->key, (void *)val,
+						key_val->type)) {
+			dev_err(&GET_DEV(accel_dev),
+				"failed to add hex keyvalue.\n");
+			return -EFAULT;
+		}
+	} else {
+		if (adf_cfg_add_key_value_param(accel_dev, section,
+						key_val->key, key_val->val,
+						key_val->type)) {
+			dev_err(&GET_DEV(accel_dev),
+				"failed to add keyvalue.\n");
+			return -EFAULT;
+		}
+	}
+	return 0;
+}
+
+static int adf_copy_key_value_data(struct adf_accel_dev *accel_dev,
+				   struct adf_user_cfg_ctl_data *ctl_data)
+{
+	struct adf_user_cfg_key_val key_val;
+	struct adf_user_cfg_key_val *params_head;
+	struct adf_user_cfg_section section, *section_head;
+	int i, j;
+
+	section_head = ctl_data->config_section;
+
+	for (i = 0; section_head && i < ADF_CFG_MAX_SECTION; i++) {
+		if (copy_from_user(&section, (void __user *)section_head,
+				   sizeof(*section_head))) {
+			dev_err(&GET_DEV(accel_dev),
+				"failed to copy section info\n");
+			goto out_err;
+		}
+
+		if (adf_cfg_section_add(accel_dev, section.name)) {
+			dev_err(&GET_DEV(accel_dev),
+				"failed to add section.\n");
+			goto out_err;
+		}
+
+		params_head = section.params;
+
+		for (j = 0; params_head && j < ADF_CFG_MAX_KEY_VAL; j++) {
+			if (copy_from_user(&key_val, (void __user *)params_head,
+					   sizeof(key_val))) {
+				dev_err(&GET_DEV(accel_dev),
+					"Failed to copy keyvalue.\n");
+				goto out_err;
+			}
+			if (adf_add_key_value_data(accel_dev, section.name,
+						   &key_val)) {
+				goto out_err;
+			}
+			params_head = key_val.next;
+		}
+		section_head = section.next;
+	}
+	return 0;
+out_err:
+	adf_cfg_del_all(accel_dev);
+	return -EFAULT;
+}
+
+static int adf_ctl_ioctl_dev_config(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) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	if (adf_dev_started(accel_dev)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	if (adf_copy_key_value_data(accel_dev, ctl_data)) {
+		ret = -EFAULT;
+		goto out;
+	}
+	set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+static int adf_ctl_is_device_in_use(int id)
+{
+	struct adf_accel_dev *dev;
+
+	list_for_each_entry(dev, adf_devmgr_get_head(), list) {
+		if (id == dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (adf_devmgr_in_reset(dev) || adf_dev_in_use(dev)) {
+				dev_info(&GET_DEV(dev),
+					 "device qat_dev%d is busy\n",
+					 dev->accel_id);
+				return -EBUSY;
+			}
+		}
+	}
+	return 0;
+}
+
+static void adf_ctl_stop_devices(u32 id)
+{
+	struct adf_accel_dev *accel_dev;
+
+	list_for_each_entry(accel_dev, adf_devmgr_get_head(), list) {
+		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (!adf_dev_started(accel_dev))
+				continue;
+
+			/* First stop all VFs */
+			if (!accel_dev->is_vf)
+				continue;
+
+			adf_dev_down(accel_dev, false);
+		}
+	}
+
+	list_for_each_entry(accel_dev, adf_devmgr_get_head(), list) {
+		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (!adf_dev_started(accel_dev))
+				continue;
+
+			adf_dev_down(accel_dev, false);
+		}
+	}
+}
+
+static int adf_ctl_ioctl_dev_stop(struct file *fp, unsigned int cmd,
+				  unsigned long arg)
+{
+	int ret;
+	struct adf_user_cfg_ctl_data *ctl_data;
+
+	ret = adf_ctl_alloc_resources(&ctl_data, arg);
+	if (ret)
+		return ret;
+
+	if (adf_devmgr_verify_id(ctl_data->device_id)) {
+		pr_err("QAT: Device %d not found\n", ctl_data->device_id);
+		ret = -ENODEV;
+		goto out;
+	}
+
+	ret = adf_ctl_is_device_in_use(ctl_data->device_id);
+	if (ret)
+		goto out;
+
+	if (ctl_data->device_id == ADF_CFG_ALL_DEVICES)
+		pr_info("QAT: Stopping all acceleration devices.\n");
+	else
+		pr_info("QAT: Stopping acceleration device qat_dev%d.\n",
+			ctl_data->device_id);
+
+	adf_ctl_stop_devices(ctl_data->device_id);
+
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+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;
+
+	ret = -ENODEV;
+	accel_dev = adf_devmgr_get_dev_by_id(ctl_data->device_id);
+	if (!accel_dev)
+		goto out;
+
+	dev_info(&GET_DEV(accel_dev),
+		 "Starting acceleration device qat_dev%d.\n",
+		 ctl_data->device_id);
+
+	ret = adf_dev_up(accel_dev, false);
+
+	if (ret) {
+		dev_err(&GET_DEV(accel_dev), "Failed to start qat_dev%d\n",
+			ctl_data->device_id);
+		adf_dev_down(accel_dev, false);
+	}
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+static int adf_ctl_ioctl_get_num_devices(struct file *fp, unsigned int cmd,
+					 unsigned long arg)
+{
+	u32 num_devices = 0;
+
+	adf_devmgr_get_num_dev(&num_devices);
+	if (copy_to_user((void __user *)arg, &num_devices, sizeof(num_devices)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int adf_ctl_ioctl_get_status(struct file *fp, unsigned int cmd,
+				    unsigned long arg)
+{
+	struct adf_hw_device_data *hw_data;
+	struct adf_dev_status_info dev_info;
+	struct adf_accel_dev *accel_dev;
+
+	if (copy_from_user(&dev_info, (void __user *)arg,
+			   sizeof(struct adf_dev_status_info))) {
+		pr_err("QAT: failed to copy from user.\n");
+		return -EFAULT;
+	}
+
+	accel_dev = adf_devmgr_get_dev_by_id(dev_info.accel_id);
+	if (!accel_dev)
+		return -ENODEV;
+
+	hw_data = accel_dev->hw_device;
+	dev_info.state = adf_dev_started(accel_dev) ? DEV_UP : DEV_DOWN;
+	dev_info.num_ae = hw_data->get_num_aes(hw_data);
+	dev_info.num_accel = hw_data->get_num_accels(hw_data);
+	dev_info.num_logical_accel = hw_data->num_logical_accel;
+	dev_info.banks_per_accel = hw_data->num_banks
+					/ hw_data->num_logical_accel;
+	strscpy(dev_info.name, hw_data->dev_class->name, sizeof(dev_info.name));
+	dev_info.instance_id = hw_data->instance_id;
+	dev_info.type = hw_data->dev_class->type;
+	dev_info.bus = accel_to_pci_dev(accel_dev)->bus->number;
+	dev_info.dev = PCI_SLOT(accel_to_pci_dev(accel_dev)->devfn);
+	dev_info.fun = PCI_FUNC(accel_to_pci_dev(accel_dev)->devfn);
+
+	if (copy_to_user((void __user *)arg, &dev_info,
+			 sizeof(struct adf_dev_status_info))) {
+		dev_err(&GET_DEV(accel_dev), "failed to copy status.\n");
+		return -EFAULT;
+	}
+	return 0;
+}
+
+static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&adf_ctl_lock))
+		return -EFAULT;
+
+	switch (cmd) {
+	case IOCTL_CONFIG_SYS_RESOURCE_PARAMETERS:
+		ret = adf_ctl_ioctl_dev_config(fp, cmd, arg);
+		break;
+
+	case IOCTL_STOP_ACCEL_DEV:
+		ret = adf_ctl_ioctl_dev_stop(fp, cmd, arg);
+		break;
+
+	case IOCTL_START_ACCEL_DEV:
+		ret = adf_ctl_ioctl_dev_start(fp, cmd, arg);
+		break;
+
+	case IOCTL_GET_NUM_DEVICES:
+		ret = adf_ctl_ioctl_get_num_devices(fp, cmd, arg);
+		break;
+
+	case IOCTL_STATUS_ACCEL_DEV:
+		ret = adf_ctl_ioctl_get_status(fp, cmd, arg);
+		break;
+	default:
+		pr_err_ratelimited("QAT: Invalid ioctl %d\n", cmd);
+		ret = -EFAULT;
+		break;
+	}
+	mutex_unlock(&adf_ctl_lock);
+	return ret;
+}
+
+static int __init adf_register_ctl_device_driver(void)
+{
+	if (adf_chr_drv_create())
+		goto err_chr_dev;
+
+	if (adf_init_misc_wq())
+		goto err_misc_wq;
+
+	if (adf_init_aer())
+		goto err_aer;
+
+	if (adf_init_pf_wq())
+		goto err_pf_wq;
+
+	if (adf_init_vf_wq())
+		goto err_vf_wq;
+
+	if (qat_crypto_register())
+		goto err_crypto_register;
+
+	if (qat_compression_register())
+		goto err_compression_register;
+
+	return 0;
+
+err_compression_register:
+	qat_crypto_unregister();
+err_crypto_register:
+	adf_exit_vf_wq();
+err_vf_wq:
+	adf_exit_pf_wq();
+err_pf_wq:
+	adf_exit_aer();
+err_aer:
+	adf_exit_misc_wq();
+err_misc_wq:
+	adf_chr_drv_destroy();
+err_chr_dev:
+	mutex_destroy(&adf_ctl_lock);
+	return -EFAULT;
+}
+
+static void __exit adf_unregister_ctl_device_driver(void)
+{
+	adf_chr_drv_destroy();
+	adf_exit_misc_wq();
+	adf_exit_aer();
+	adf_exit_vf_wq();
+	adf_exit_pf_wq();
+	qat_crypto_unregister();
+	qat_compression_unregister();
+	adf_clean_vf_map(false);
+	mutex_destroy(&adf_ctl_lock);
+}
+
+module_init(adf_register_ctl_device_driver);
+module_exit(adf_unregister_ctl_device_driver);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Intel");
+MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
+MODULE_ALIAS_CRYPTO("intel_qat");
+MODULE_VERSION(ADF_DRV_VERSION);
+MODULE_IMPORT_NS(CRYPTO_INTERNAL);