[net-next,v2,02/15] idpf: add module register and probe functionality

Message ID	20230411011354.2619359-3-pavan.kumar.linga@intel.com (mailing list archive)
State	Changes Requested
Delegated to:	Netdev Maintainers
Headers	show Return-Path: <netdev-owner@vger.kernel.org> From: Pavan Kumar Linga <pavan.kumar.linga@intel.com> To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, emil.s.tantilov@intel.com, joshua.a.hay@intel.com, sridhar.samudrala@intel.com, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, willemb@google.com, decot@google.com, pabeni@redhat.com, kuba@kernel.org, edumazet@google.com, davem@davemloft.net, Phani Burra <phani.r.burra@intel.com>, Alan Brady <alan.brady@intel.com>, Madhu Chittim <madhu.chittim@intel.com>, Shailendra Bhatnagar <shailendra.bhatnagar@intel.com>, Pavan Kumar Linga <pavan.kumar.linga@intel.com> Subject: [PATCH net-next v2 02/15] idpf: add module register and probe functionality Date: Mon, 10 Apr 2023 18:13:41 -0700 Message-Id: <20230411011354.2619359-3-pavan.kumar.linga@intel.com> In-Reply-To: <20230411011354.2619359-1-pavan.kumar.linga@intel.com> References: <20230411011354.2619359-1-pavan.kumar.linga@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Introduce Intel IDPF driver \| expand [net-next,v2,00/15] Introduce Intel IDPF driver [net-next,v2,01/15] virtchnl: add virtchnl version 2 ops [net-next,v2,02/15] idpf: add module register and probe functionality [net-next,v2,03/15] idpf: add controlq init and reset checks [net-next,v2,04/15] idpf: add core init and interrupt request [net-next,v2,05/15] idpf: add create vport and netdev configuration [net-next,v2,06/15] idpf: continue expanding init task [net-next,v2,07/15] idpf: configure resources for TX queues [net-next,v2,08/15] idpf: configure resources for RX queues [net-next,v2,09/15] idpf: initialize interrupts and enable vport [net-next,v2,10/15] idpf: add splitq start_xmit [net-next,v2,11/15] idpf: add TX splitq napi poll support [net-next,v2,12/15] idpf: add RX splitq napi poll support [net-next,v2,13/15] idpf: add singleq start_xmit and napi poll [net-next,v2,14/15] idpf: add ethtool callbacks [net-next,v2,15/15] idpf: configure SRIOV and add other ndo_ops

Context	Check	Description
netdev/series_format	success	Posting correctly formatted
netdev/tree_selection	success	Clearly marked for net-next, async
netdev/fixes_present	success	Fixes tag not required for -next series
netdev/header_inline	success	No static functions without inline keyword in header files
netdev/build_32bit	success	Errors and warnings before: 18 this patch: 18
netdev/cc_maintainers	success	CCed 8 of 8 maintainers
netdev/build_clang	success	Errors and warnings before: 18 this patch: 18
netdev/verify_signedoff	success	Signed-off-by tag matches author and committer
netdev/deprecated_api	success	None detected
netdev/check_selftest	success	No net selftest shell script
netdev/verify_fixes	success	No Fixes tag
netdev/build_allmodconfig_warn	success	Errors and warnings before: 18 this patch: 18
netdev/checkpatch	warning	WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
netdev/kdoc	success	Errors and warnings before: 0 this patch: 0
netdev/source_inline	success	Was 0 now: 0

diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig index c18c3b373846..8c250326985f 100644 --- a/drivers/net/ethernet/intel/Kconfig +++ b/drivers/net/ethernet/intel/Kconfig @@ -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 diff --git a/drivers/net/ethernet/intel/Makefile b/drivers/net/ethernet/intel/Makefile index 3075290063f6..70cc2ae1cb97 100644 --- a/drivers/net/ethernet/intel/Makefile +++ b/drivers/net/ethernet/intel/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_IXGB) += ixgb/ obj-$(CONFIG_IAVF) += iavf/ obj-$(CONFIG_FM10K) += fm10k/ obj-$(CONFIG_ICE) += ice/ +obj-$(CONFIG_IDPF) += idpf/ diff --git a/drivers/net/ethernet/intel/idpf/Makefile b/drivers/net/ethernet/intel/idpf/Makefile new file mode 100644 index 000000000000..d26521c987e1 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Copyright (C) 2023 Intel Corporation + +# Makefile for Infrastructure Data Path Function Linux Driver + +obj-$(CONFIG_IDPF) += idpf.o + +idpf-y := \ + idpf_lib.o \ + idpf_main.o diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h new file mode 100644 index 000000000000..7494f9d29970 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf.h @@ -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_ */ 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..383089c91675 --- /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; + + void *back; +}; + +#endif /* _IDPF_CONTROLQ_H_ */ diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c new file mode 100644 index 000000000000..bf25574c75e4 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c @@ -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); +} 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..617df9b924fa --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf_main.c @@ -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);

[net-next,v2,02/15] idpf: add module register and probe functionality

Checks

Commit Message

Comments

Patch