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refactormanJeff Kirsher
refactorman
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Jeff Kirsher
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ice: Add basic driver framework for Intel(R) E800 Series
This patch adds a basic driver framework for the Intel(R) E800 Ethernet Series of network devices. There is no functionality right now other than the ability to load. Signed-off-by: Anirudh Venkataramanan <[email protected]> Tested-by: Tony Brelinski <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
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‎Documentation/networking/ice.txt

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Intel(R) Ethernet Connection E800 Series Linux Driver
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===================================================================
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Intel ice Linux driver.
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Copyright(c) 2018 Intel Corporation.
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Contents
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========
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- Enabling the driver
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- Support
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The driver in this release supports Intel's E800 Series of products. For
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more information, visit Intel's support page at http://support.intel.com.
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Enabling the driver
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===================
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The driver is enabled via the standard kernel configuration system,
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using the make command:
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Make oldconfig/silentoldconfig/menuconfig/etc.
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The driver is located in the menu structure at:
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-> Device Drivers
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-> Network device support (NETDEVICES [=y])
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-> Ethernet driver support
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-> Intel devices
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-> Intel(R) Ethernet Connection E800 Series Support
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Support
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=======
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For general information, go to the Intel support website at:
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http://support.intel.com
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If an issue is identified with the released source code, please email
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the maintainer listed in the MAINTAINERS file.

‎MAINTAINERS

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@@ -7063,6 +7063,7 @@ F: Documentation/networking/ixgbe.txt
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F: Documentation/networking/ixgbevf.txt
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F: Documentation/networking/i40e.txt
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F: Documentation/networking/i40evf.txt
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F: Documentation/networking/ice.txt
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F: drivers/net/ethernet/intel/
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F: drivers/net/ethernet/intel/*/
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F: include/linux/avf/virtchnl.h

‎drivers/net/ethernet/intel/Kconfig

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@@ -251,6 +251,20 @@ config I40EVF
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will be called i40evf. MSI-X interrupt support is required
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for this driver to work correctly.
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config ICE
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tristate "Intel(R) Ethernet Connection E800 Series Support"
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default n
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depends on PCI_MSI
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---help---
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This driver supports Intel(R) Ethernet Connection E800 Series of
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devices. For more information on how to identify your adapter, go
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to the Adapter & Driver ID Guide that can be located at:
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<http://support.intel.com>
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To compile this driver as a module, choose M here. The module
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will be called ice.
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config FM10K
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tristate "Intel(R) FM10000 Ethernet Switch Host Interface Support"
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default n

‎drivers/net/ethernet/intel/Makefile

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@@ -14,3 +14,4 @@ obj-$(CONFIG_I40E) += i40e/
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obj-$(CONFIG_IXGB) += ixgb/
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obj-$(CONFIG_I40EVF) += i40evf/
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obj-$(CONFIG_FM10K) += fm10k/
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obj-$(CONFIG_ICE) += ice/

‎drivers/net/ethernet/intel/ice/Makefile

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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018, Intel Corporation.
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#
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# Makefile for the Intel(R) Ethernet Connection E800 Series Linux Driver
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#
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obj-$(CONFIG_ICE) += ice.o
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ice-y := ice_main.o

‎drivers/net/ethernet/intel/ice/ice.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, Intel Corporation. */
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#ifndef _ICE_H_
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#define _ICE_H_
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/compiler.h>
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#include <linux/pci.h>
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#include <linux/aer.h>
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#include <linux/bitmap.h>
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#include "ice_devids.h"
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#include "ice_type.h"
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#define ICE_BAR0 0
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#define ICE_DFLT_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
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enum ice_state {
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__ICE_DOWN,
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__ICE_STATE_NBITS /* must be last */
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};
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struct ice_pf {
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struct pci_dev *pdev;
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DECLARE_BITMAP(state, __ICE_STATE_NBITS);
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u32 msg_enable;
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struct ice_hw hw;
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};
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#endif /* _ICE_H_ */

‎drivers/net/ethernet/intel/ice/ice_devids.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, Intel Corporation. */
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#ifndef _ICE_DEVIDS_H_
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#define _ICE_DEVIDS_H_
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/* Device IDs */
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/* Intel(R) Ethernet Controller C810 for backplane */
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#define ICE_DEV_ID_C810_BACKPLANE 0x1591
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/* Intel(R) Ethernet Controller C810 for QSFP */
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#define ICE_DEV_ID_C810_QSFP 0x1592
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/* Intel(R) Ethernet Controller C810 for SFP */
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#define ICE_DEV_ID_C810_SFP 0x1593
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/* Intel(R) Ethernet Controller C810/X557-AT 10GBASE-T */
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#define ICE_DEV_ID_C810_10G_BASE_T 0x1594
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/* Intel(R) Ethernet Controller C810 1GbE */
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#define ICE_DEV_ID_C810_SGMII 0x1595
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#endif /* _ICE_DEVIDS_H_ */

‎drivers/net/ethernet/intel/ice/ice_main.c

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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2018, Intel Corporation. */
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/* Intel(R) Ethernet Connection E800 Series Linux Driver */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include "ice.h"
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#define DRV_VERSION "ice-0.0.1-k"
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#define DRV_SUMMARY "Intel(R) Ethernet Connection E800 Series Linux Driver"
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static const char ice_drv_ver[] = DRV_VERSION;
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static const char ice_driver_string[] = DRV_SUMMARY;
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static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
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MODULE_AUTHOR("Intel Corporation, <[email protected]>");
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MODULE_DESCRIPTION(DRV_SUMMARY);
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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static int debug = -1;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "netif message level (0=none,...,0x7FFF=all)");
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/**
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* ice_probe - Device initialization routine
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* @pdev: PCI device information struct
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* @ent: entry in ice_pci_tbl
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*
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* Returns 0 on success, negative on failure
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*/
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static int ice_probe(struct pci_dev *pdev,
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const struct pci_device_id __always_unused *ent)
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{
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struct ice_pf *pf;
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struct ice_hw *hw;
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int err;
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/* this driver uses devres, see Documentation/driver-model/devres.txt */
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err = pcim_enable_device(pdev);
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if (err)
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return err;
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err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev));
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if (err) {
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dev_err(&pdev->dev, "I/O map error %d\n", err);
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return err;
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}
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pf = devm_kzalloc(&pdev->dev, sizeof(*pf), GFP_KERNEL);
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if (!pf)
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return -ENOMEM;
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/* set up for high or low dma */
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err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
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if (err)
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err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
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if (err) {
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dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err);
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return err;
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}
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pci_enable_pcie_error_reporting(pdev);
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pci_set_master(pdev);
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pf->pdev = pdev;
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pci_set_drvdata(pdev, pf);
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set_bit(__ICE_DOWN, pf->state);
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hw = &pf->hw;
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hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
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hw->back = pf;
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hw->vendor_id = pdev->vendor;
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hw->device_id = pdev->device;
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pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
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hw->subsystem_vendor_id = pdev->subsystem_vendor;
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hw->subsystem_device_id = pdev->subsystem_device;
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hw->bus.device = PCI_SLOT(pdev->devfn);
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hw->bus.func = PCI_FUNC(pdev->devfn);
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pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
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return 0;
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}
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/**
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* ice_remove - Device removal routine
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* @pdev: PCI device information struct
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*/
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static void ice_remove(struct pci_dev *pdev)
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{
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struct ice_pf *pf = pci_get_drvdata(pdev);
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if (!pf)
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return;
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set_bit(__ICE_DOWN, pf->state);
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pci_disable_pcie_error_reporting(pdev);
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}
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/* ice_pci_tbl - PCI Device ID Table
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*
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* Wildcard entries (PCI_ANY_ID) should come last
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* Last entry must be all 0s
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*
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* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
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* Class, Class Mask, private data (not used) }
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*/
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static const struct pci_device_id ice_pci_tbl[] = {
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{ PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_BACKPLANE), 0 },
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{ PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_QSFP), 0 },
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{ PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_SFP), 0 },
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{ PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_10G_BASE_T), 0 },
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{ PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_SGMII), 0 },
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/* required last entry */
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{ 0, }
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};
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MODULE_DEVICE_TABLE(pci, ice_pci_tbl);
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static struct pci_driver ice_driver = {
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.name = KBUILD_MODNAME,
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.id_table = ice_pci_tbl,
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.probe = ice_probe,
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.remove = ice_remove,
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};
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/**
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* ice_module_init - Driver registration routine
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*
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* ice_module_init is the first routine called when the driver is
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* loaded. All it does is register with the PCI subsystem.
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*/
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static int __init ice_module_init(void)
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{
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int status;
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pr_info("%s - version %s\n", ice_driver_string, ice_drv_ver);
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pr_info("%s\n", ice_copyright);
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status = pci_register_driver(&ice_driver);
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if (status)
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pr_err("failed to register pci driver, err %d\n", status);
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return status;
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}
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module_init(ice_module_init);
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/**
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* ice_module_exit - Driver exit cleanup routine
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*
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* ice_module_exit is called just before the driver is removed
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* from memory.
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*/
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static void __exit ice_module_exit(void)
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{
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pci_unregister_driver(&ice_driver);
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pr_info("module unloaded\n");
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}
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module_exit(ice_module_exit);

‎drivers/net/ethernet/intel/ice/ice_type.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, Intel Corporation. */
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#ifndef _ICE_TYPE_H_
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#define _ICE_TYPE_H_
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/* Bus parameters */
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struct ice_bus_info {
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u16 device;
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u8 func;
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};
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/* Port hardware description */
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struct ice_hw {
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u8 __iomem *hw_addr;
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void *back;
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/* pci info */
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u16 device_id;
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u16 vendor_id;
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u16 subsystem_device_id;
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u16 subsystem_vendor_id;
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u8 revision_id;
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struct ice_bus_info bus;
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};
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#endif /* _ICE_TYPE_H_ */

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