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Enable the PCI device and request the kernel to reserve the memory resources that will be used by the driver. Finally map the BAR0 address space. Signed-off-by: Phani Burra Co-developed-by: Alan Brady Signed-off-by: Alan Brady Co-developed-by: Madhu Chittim Signed-off-by: Madhu Chittim Co-developed-by: Shailendra Bhatnagar Signed-off-by: Shailendra Bhatnagar Reviewed-by: Sridhar Samudrala Reviewed-by: Willem de Bruijn Co-developed-by: Pavan Kumar Linga Signed-off-by: Pavan Kumar Linga --- drivers/net/ethernet/intel/idpf/Makefile | 9 ++ drivers/net/ethernet/intel/idpf/idpf.h | 28 ++++ .../net/ethernet/intel/idpf/idpf_controlq.h | 14 ++ drivers/net/ethernet/intel/idpf/idpf_devids.h | 10 ++ drivers/net/ethernet/intel/idpf/idpf_main.c | 136 ++++++++++++++++++ 5 files changed, 197 insertions(+) create mode 100644 drivers/net/ethernet/intel/idpf/Makefile create mode 100644 drivers/net/ethernet/intel/idpf/idpf.h create mode 100644 drivers/net/ethernet/intel/idpf/idpf_controlq.h create mode 100644 drivers/net/ethernet/intel/idpf/idpf_devids.h create mode 100644 drivers/net/ethernet/intel/idpf/idpf_main.c diff --git a/drivers/net/ethernet/intel/idpf/Makefile b/drivers/net/ethernet/intel/idpf/Makefile new file mode 100644 index 000000000000..73173bde98b1 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Copyright (C) 2023 Intel Corporation + +# Makefile for Intel(R) Infrastructure Data Path Function Linux Driver + +obj-$(CONFIG_IDPF) += idpf.o + +idpf-y := \ + idpf_main.o diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h new file mode 100644 index 000000000000..0f494396d68f --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2023 Intel Corporation */ + +#ifndef _IDPF_H_ +#define _IDPF_H_ + +#include +#include +#include + +#include "idpf_controlq.h" + +/* available message levels */ +#define IDPF_AVAIL_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) + +/** + * struct idpf_adapter - Device data struct generated on probe + * @pdev: PCI device struct given on probe + * @msg_enable: Debug message level enabled + * @hw: Device access data + */ +struct idpf_adapter { + struct pci_dev *pdev; + u32 msg_enable; + struct idpf_hw hw; +}; + +#endif /* !_IDPF_H_ */ diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq.h b/drivers/net/ethernet/intel/idpf/idpf_controlq.h new file mode 100644 index 000000000000..11388834cf64 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf_controlq.h @@ -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; + + struct idpf_adapter *back; +}; + +#endif /* _IDPF_CONTROLQ_H_ */ diff --git a/drivers/net/ethernet/intel/idpf/idpf_devids.h b/drivers/net/ethernet/intel/idpf/idpf_devids.h new file mode 100644 index 000000000000..5154a52ae61c --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf_devids.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2023 Intel Corporation */ + +#ifndef _IDPF_DEVIDS_H_ +#define _IDPF_DEVIDS_H_ + +#define IDPF_DEV_ID_PF 0x1452 +#define IDPF_DEV_ID_VF 0x145C + +#endif /* _IDPF_DEVIDS_H_ */ diff --git a/drivers/net/ethernet/intel/idpf/idpf_main.c b/drivers/net/ethernet/intel/idpf/idpf_main.c new file mode 100644 index 000000000000..43ae6d8c13b7 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf_main.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (C) 2023 Intel Corporation */ + +#include "idpf.h" +#include "idpf_devids.h" + +#define DRV_SUMMARY "Intel(R) 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); + + pci_disable_pcie_error_reporting(pdev); + pci_set_drvdata(pdev, NULL); + kfree(adapter); +} + +/** + * 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_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 - 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 device *dev = &pdev->dev; + struct idpf_adapter *adapter; + int err; + + adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); + if (!adapter) + return -ENOMEM; + adapter->pdev = pdev; + + err = pcim_enable_device(pdev); + if (err) + goto err_free; + + err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); + if (err) { + pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err)); + + goto err_free; + } + + /* 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)); + + goto err_free; + } + + 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); +err_free: + kfree(adapter); + return err; +} + +/* idpf_pci_tbl - PCI Dev idpf ID Table + */ +static const struct pci_device_id idpf_pci_tbl[] = { + { PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)}, + { PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)}, + { /* 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); -- 2.38.1 _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan