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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2023 Intel Corporation */
#include <linux/device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <adf_accel_devices.h>
#include <adf_gen4_hw_data.h>
#include <adf_gen4_config.h>
#include <adf_cfg.h>
#include <adf_common_drv.h>
#include <adf_dbgfs.h>
#include "adf_420xx_hw_data.h"
static const struct pci_device_id adf_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, ADF_420XX_PCI_DEVICE_ID), },
{ }
};
MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
{
if (accel_dev->hw_device) {
adf_clean_hw_data_420xx(accel_dev->hw_device);
accel_dev->hw_device = NULL;
}
adf_dbgfs_exit(accel_dev);
adf_cfg_dev_remove(accel_dev);
adf_devmgr_rm_dev(accel_dev, NULL);
}
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;
unsigned int i, bar_nr;
unsigned long bar_mask;
struct adf_bar *bar;
int ret;
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 = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL);
if (!accel_dev)
return -ENOMEM;
INIT_LIST_HEAD(&accel_dev->crypto_list);
accel_pci_dev = &accel_dev->accel_pci_dev;
accel_pci_dev->pci_dev = pdev;
/*
* Add accel device to accel table
* This should be called before adf_cleanup_accel is called
*/
if (adf_devmgr_add_dev(accel_dev, NULL)) {
dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
return -EFAULT;
}
accel_dev->owner = THIS_MODULE;
/* Allocate and initialise device hardware meta-data structure */
hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL);
if (!hw_data) {
ret = -ENOMEM;
goto out_err;
}
accel_dev->hw_device = hw_data;
adf_init_hw_data_420xx(accel_dev->hw_device, ent->device);
pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
pci_read_config_dword(pdev, ADF_GEN4_FUSECTL4_OFFSET, &hw_data->fuses);
/* Get Accelerators and Accelerators Engines masks */
hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
accel_pci_dev->sku = hw_data->get_sku(hw_data);
/* 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.\n");
ret = -EFAULT;
goto out_err;
}
/* Create device configuration table */
ret = adf_cfg_dev_add(accel_dev);
if (ret)
goto out_err;
/* Enable PCI device */
ret = pcim_enable_device(pdev);
if (ret) {
dev_err(&pdev->dev, "Can't enable PCI device.\n");
goto out_err;
}
/* Set DMA identifier */
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (ret) {
dev_err(&pdev->dev, "No usable DMA configuration.\n");
goto out_err;
}
ret = adf_gen4_cfg_dev_init(accel_dev);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize configuration.\n");
goto out_err;
}
/* Get accelerator capabilities mask */
hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);
if (!hw_data->accel_capabilities_mask) {
dev_err(&pdev->dev, "Failed to get capabilities mask.\n");
ret = -EINVAL;
goto out_err;
}
/* Find and map all the device's BARS */
bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_GEN4_BAR_MASK;
ret = pcim_request_all_regions(pdev, pci_name(pdev));
if (ret) {
dev_err(&pdev->dev, "Failed to request PCI regions.\n");
goto out_err;
}
i = 0;
for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {
bar = &accel_pci_dev->pci_bars[i++];
bar->virt_addr = pcim_iomap(pdev, bar_nr, 0);
if (!bar->virt_addr) {
dev_err(&pdev->dev, "Failed to ioremap PCI region.\n");
ret = -ENOMEM;
goto out_err;
}
}
pci_set_master(pdev);
if (pci_save_state(pdev)) {
dev_err(&pdev->dev, "Failed to save pci state.\n");
ret = -ENOMEM;
goto out_err;
}
accel_dev->ras_errors.enabled = true;
adf_dbgfs_init(accel_dev);
ret = adf_dev_up(accel_dev, true);
if (ret)
goto out_err_dev_stop;
ret = adf_sysfs_init(accel_dev);
if (ret)
goto out_err_dev_stop;
return ret;
out_err_dev_stop:
adf_dev_down(accel_dev);
out_err:
adf_cleanup_accel(accel_dev);
return ret;
}
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;
}
adf_dev_down(accel_dev);
adf_cleanup_accel(accel_dev);
}
static struct pci_driver adf_driver = {
.id_table = adf_pci_tbl,
.name = ADF_420XX_DEVICE_NAME,
.probe = adf_probe,
.remove = adf_remove,
.sriov_configure = adf_sriov_configure,
.err_handler = &adf_err_handler,
};
module_pci_driver(adf_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Intel");
MODULE_FIRMWARE(ADF_420XX_FW);
MODULE_FIRMWARE(ADF_420XX_MMP);
MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
MODULE_VERSION(ADF_DRV_VERSION);
MODULE_SOFTDEP("pre: crypto-intel_qat");
MODULE_IMPORT_NS("CRYPTO_QAT");
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