@@ -373,4 +373,15 @@ config IGC
To compile this driver as a module, choose M here. The module
will be called igc.
+config IDPF
+ tristate "Intel(R) Infrastructure Data Path Function Support"
+ depends on PCI_MSI
+ select DIMLIB
+ help
+ This driver supports Intel(R) Infrastructure Processing Unit (IPU)
+ devices.
+
+ To compile this driver as a module, choose M here. The module
+ will be called idpf.
+
endif # NET_VENDOR_INTEL
@@ -16,3 +16,4 @@ obj-$(CONFIG_IXGB) += ixgb/
obj-$(CONFIG_IAVF) += iavf/
obj-$(CONFIG_FM10K) += fm10k/
obj-$(CONFIG_ICE) += ice/
+obj-$(CONFIG_IDPF) += idpf/
new file mode 100644
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (C) 2023 Intel Corporation
+
+# Makefile for Infrastructure Data Path Function Linux Driver
+
+obj-$(CONFIG_IDPF) += idpf.o
+
+idpf-y := \
+ idpf_lib.o \
+ idpf_main.o
new file mode 100644
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_H_
+#define _IDPF_H_
+
+#include <linux/aer.h>
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+
+#include "idpf_controlq.h"
+
+/* available message levels */
+#define IDPF_AVAIL_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+struct idpf_adapter {
+ struct pci_dev *pdev;
+ u32 msg_enable;
+ struct idpf_hw hw;
+};
+
+int idpf_pf_probe(struct pci_dev *pdev, struct idpf_adapter *adapter);
+int idpf_vf_probe(struct pci_dev *pdev, struct idpf_adapter *adapter);
+int idpf_probe_common(struct pci_dev *pdev, struct idpf_adapter *adapter);
+void idpf_remove_common(struct pci_dev *pdev);
+
+#endif /* !_IDPF_H_ */
new file mode 100644
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _IDPF_CONTROLQ_H_
+#define _IDPF_CONTROLQ_H_
+
+struct idpf_hw {
+ void __iomem *hw_addr;
+ resource_size_t hw_addr_len;
+
+ void *back;
+};
+
+#endif /* _IDPF_CONTROLQ_H_ */
new file mode 100644
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+/**
+ * idpf_cfg_hw - Initialize HW struct
+ * @adapter: adapter to setup hw struct for
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_cfg_hw(struct idpf_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ struct idpf_hw *hw = &adapter->hw;
+
+ hw->hw_addr = pcim_iomap_table(pdev)[0];
+ if (!hw->hw_addr) {
+ pci_err(pdev, "failed to allocate PCI iomap table\n");
+
+ return -ENOMEM;
+ }
+
+ hw->back = adapter;
+
+ return 0;
+}
+
+/**
+ * idpf_probe_common - Device initialization routine
+ * @pdev: PCI device information struct
+ * @adapter: driver specific private structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+int idpf_probe_common(struct pci_dev *pdev, struct idpf_adapter *adapter)
+{
+ struct device *dev = &pdev->dev;
+ int err;
+
+ adapter->pdev = pdev;
+
+ err = pcim_enable_device(pdev);
+ if (err)
+ return err;
+
+ err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
+ if (err) {
+ pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err));
+
+ return err;
+ }
+
+ /* set up for high or low dma */
+ err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (err) {
+ pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err));
+
+ return err;
+ }
+
+ pci_enable_pcie_error_reporting(pdev);
+ pci_set_master(pdev);
+ pci_set_drvdata(pdev, adapter);
+
+ /* setup msglvl */
+ adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M);
+
+ err = idpf_cfg_hw(adapter);
+ if (err) {
+ dev_err(dev, "Failed to configure HW structure for adapter: %d\n",
+ err);
+ goto err_cfg_hw;
+ }
+
+ return 0;
+
+err_cfg_hw:
+ pci_disable_pcie_error_reporting(pdev);
+
+ return err;
+}
+
+/**
+ * idpf_remove_common - Device removal routine
+ * @pdev: PCI device information struct
+ */
+void idpf_remove_common(struct pci_dev *pdev)
+{
+ struct idpf_adapter *adapter = pci_get_drvdata(pdev);
+
+ if (!adapter)
+ return;
+
+ pci_disable_pcie_error_reporting(pdev);
+}
new file mode 100644
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "idpf.h"
+
+#define DRV_SUMMARY "Infrastructure Data Path Function Linux Driver"
+
+MODULE_DESCRIPTION(DRV_SUMMARY);
+MODULE_LICENSE("GPL");
+
+/**
+ * idpf_remove - Device removal routine
+ * @pdev: PCI device information struct
+ */
+static void idpf_remove(struct pci_dev *pdev)
+{
+ struct idpf_adapter *adapter = pci_get_drvdata(pdev);
+
+ if (!adapter)
+ return;
+
+ idpf_remove_common(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+/**
+ * idpf_shutdown - PCI callback for shutting down device
+ * @pdev: PCI device information struct
+ */
+static void idpf_shutdown(struct pci_dev *pdev)
+{
+ idpf_remove(pdev);
+
+ if (system_state == SYSTEM_POWER_OFF)
+ pci_set_power_state(pdev, PCI_D3hot);
+}
+
+/**
+ * idpf_probe - Device initialization routine
+ * @pdev: PCI device information struct
+ * @ent: entry in idpf_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct idpf_adapter *adapter;
+
+ adapter = devm_kzalloc(&pdev->dev, sizeof(*adapter), GFP_KERNEL);
+ if (!adapter)
+ return -ENOMEM;
+
+ return idpf_probe_common(pdev, adapter);
+}
+
+/* idpf_pci_tbl - PCI Dev idpf ID Table
+ */
+static const struct pci_device_id idpf_pci_tbl[] = {
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(pci, idpf_pci_tbl);
+
+static struct pci_driver idpf_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = idpf_pci_tbl,
+ .probe = idpf_probe,
+ .remove = idpf_remove,
+ .shutdown = idpf_shutdown,
+};
+module_pci_driver(idpf_driver);