linux-zen-server/drivers/crypto/qat/qat_common/adf_accel_engine.c

// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2014 - 2020 Intel Corporation */
#include <linux/firmware.h>
#include <linux/pci.h>
#include "adf_cfg.h"
#include "adf_accel_devices.h"
#include "adf_common_drv.h"
#include "icp_qat_uclo.h"

static int adf_ae_fw_load_images(struct adf_accel_dev *accel_dev, void *fw_addr,
				 u32 fw_size)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
	struct icp_qat_fw_loader_handle *loader;
	char *obj_name;
	u32 num_objs;
	u32 ae_mask;
	int i;

	loader = loader_data->fw_loader;
	num_objs = hw_device->uof_get_num_objs();

	for (i = 0; i < num_objs; i++) {
		obj_name = hw_device->uof_get_name(accel_dev, i);
		ae_mask = hw_device->uof_get_ae_mask(accel_dev, i);
		if (!obj_name || !ae_mask) {
			dev_err(&GET_DEV(accel_dev), "Invalid UOF image\n");
			goto out_err;
		}

		if (qat_uclo_set_cfg_ae_mask(loader, ae_mask)) {
			dev_err(&GET_DEV(accel_dev),
				"Invalid mask for UOF image\n");
			goto out_err;
		}
		if (qat_uclo_map_obj(loader, fw_addr, fw_size, obj_name)) {
			dev_err(&GET_DEV(accel_dev),
				"Failed to map UOF firmware\n");
			goto out_err;
		}
		if (qat_uclo_wr_all_uimage(loader)) {
			dev_err(&GET_DEV(accel_dev),
				"Failed to load UOF firmware\n");
			goto out_err;
		}
		qat_uclo_del_obj(loader);
	}

	return 0;

out_err:
	adf_ae_fw_release(accel_dev);
	return -EFAULT;
}

int adf_ae_fw_load(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
	void *fw_addr, *mmp_addr;
	u32 fw_size, mmp_size;

	if (!hw_device->fw_name)
		return 0;

	if (request_firmware(&loader_data->mmp_fw, hw_device->fw_mmp_name,
			     &accel_dev->accel_pci_dev.pci_dev->dev)) {
		dev_err(&GET_DEV(accel_dev), "Failed to load MMP firmware %s\n",
			hw_device->fw_mmp_name);
		return -EFAULT;
	}
	if (request_firmware(&loader_data->uof_fw, hw_device->fw_name,
			     &accel_dev->accel_pci_dev.pci_dev->dev)) {
		dev_err(&GET_DEV(accel_dev), "Failed to load UOF firmware %s\n",
			hw_device->fw_name);
		goto out_err;
	}

	fw_size = loader_data->uof_fw->size;
	fw_addr = (void *)loader_data->uof_fw->data;
	mmp_size = loader_data->mmp_fw->size;
	mmp_addr = (void *)loader_data->mmp_fw->data;

	if (qat_uclo_wr_mimage(loader_data->fw_loader, mmp_addr, mmp_size)) {
		dev_err(&GET_DEV(accel_dev), "Failed to load MMP\n");
		goto out_err;
	}

	if (hw_device->uof_get_num_objs)
		return adf_ae_fw_load_images(accel_dev, fw_addr, fw_size);

	if (qat_uclo_map_obj(loader_data->fw_loader, fw_addr, fw_size, NULL)) {
		dev_err(&GET_DEV(accel_dev), "Failed to map FW\n");
		goto out_err;
	}
	if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
		dev_err(&GET_DEV(accel_dev), "Failed to load UOF\n");
		goto out_err;
	}
	return 0;

out_err:
	adf_ae_fw_release(accel_dev);
	return -EFAULT;
}

void adf_ae_fw_release(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;

	if (!hw_device->fw_name)
		return;

	qat_uclo_del_obj(loader_data->fw_loader);
	qat_hal_deinit(loader_data->fw_loader);
	release_firmware(loader_data->uof_fw);
	release_firmware(loader_data->mmp_fw);
	loader_data->uof_fw = NULL;
	loader_data->mmp_fw = NULL;
	loader_data->fw_loader = NULL;
}

int adf_ae_start(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	u32 ae_ctr;

	if (!hw_data->fw_name)
		return 0;

	ae_ctr = qat_hal_start(loader_data->fw_loader);
	dev_info(&GET_DEV(accel_dev),
		 "qat_dev%d started %d acceleration engines\n",
		 accel_dev->accel_id, ae_ctr);
	return 0;
}

int adf_ae_stop(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	u32 ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);

	if (!hw_data->fw_name)
		return 0;

	for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
		if (hw_data->ae_mask & (1 << ae)) {
			qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
			ae_ctr++;
		}
	}
	dev_info(&GET_DEV(accel_dev),
		 "qat_dev%d stopped %d acceleration engines\n",
		 accel_dev->accel_id, ae_ctr);
	return 0;
}

static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;

	qat_hal_reset(loader_data->fw_loader);
	if (qat_hal_clr_reset(loader_data->fw_loader))
		return -EFAULT;

	return 0;
}

int adf_ae_init(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data;
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;

	if (!hw_device->fw_name)
		return 0;

	loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
	if (!loader_data)
		return -ENOMEM;

	accel_dev->fw_loader = loader_data;
	if (qat_hal_init(accel_dev)) {
		dev_err(&GET_DEV(accel_dev), "Failed to init the AEs\n");
		kfree(loader_data);
		return -EFAULT;
	}
	if (adf_ae_reset(accel_dev, 0)) {
		dev_err(&GET_DEV(accel_dev), "Failed to reset the AEs\n");
		qat_hal_deinit(loader_data->fw_loader);
		kfree(loader_data);
		return -EFAULT;
	}
	return 0;
}

int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
{
	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;

	if (!hw_device->fw_name)
		return 0;

	qat_hal_deinit(loader_data->fw_loader);
	kfree(accel_dev->fw_loader);
	accel_dev->fw_loader = NULL;
	return 0;
}