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 <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/Documentation/networking/ice.txt b/Documentation/networking/ice.txt
new file mode 100644 (file)
index 0000000..6261c46
--- /dev/null
+++ b/Documentation/networking/ice.txt
@@ -0,0 +1,39 @@
+Intel(R) Ethernet Connection E800 Series Linux Driver
+===================================================================
+
+Intel ice Linux driver.
+Copyright(c) 2018 Intel Corporation.
+
+Contents
+========
+- Enabling the driver
+- Support
+
+The driver in this release supports Intel's E800 Series of products. For
+more information, visit Intel's support page at http://support.intel.com.
+
+Enabling the driver
+===================
+
+The driver is enabled via the standard kernel configuration system,
+using the make command:
+
+     Make oldconfig/silentoldconfig/menuconfig/etc.
+
+The driver is located in the menu structure at:
+
+       -> Device Drivers
+         -> Network device support (NETDEVICES [=y])
+           -> Ethernet driver support
+             -> Intel devices
+               -> Intel(R) Ethernet Connection E800 Series Support
+
+Support
+=======
+
+For general information, go to the Intel support website at:
+
+    http://support.intel.com
+
+If an issue is identified with the released source code, please email
+the maintainer listed in the MAINTAINERS file.

diff --git a/MAINTAINERS b/MAINTAINERS
index b3ea844cf228d647628d0b79aa126eb4c96460ea..9107d9241564d037415f4c69a208b422fe8e8193 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7063,6 +7063,7 @@ F:        Documentation/networking/ixgbe.txt
 F:     Documentation/networking/ixgbevf.txt
 F:     Documentation/networking/i40e.txt
 F:     Documentation/networking/i40evf.txt
+F:     Documentation/networking/ice.txt
 F:     drivers/net/ethernet/intel/
 F:     drivers/net/ethernet/intel/*/
 F:     include/linux/avf/virtchnl.h

diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 1feb54b6d92e1e9f504f01ec076222ead66b59d7..14d287bed33c4e65100d04458af127cdc6bfa0d5 100644 (file)
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -251,6 +251,20 @@ config I40EVF
          will be called i40evf.  MSI-X interrupt support is required
          for this driver to work correctly.
 
+config ICE
+       tristate "Intel(R) Ethernet Connection E800 Series Support"
+       default n
+       depends on PCI_MSI
+       ---help---
+         This driver supports Intel(R) Ethernet Connection E800 Series of
+         devices.  For more information on how to identify your adapter, go
+         to the Adapter & Driver ID Guide that can be located at:
+
+         <http://support.intel.com>
+
+         To compile this driver as a module, choose M here. The module
+         will be called ice.
+
 config FM10K
        tristate "Intel(R) FM10000 Ethernet Switch Host Interface Support"
        default n

diff --git a/drivers/net/ethernet/intel/Makefile b/drivers/net/ethernet/intel/Makefile
index 90af7757a885416ce9776a6b800bbbd158730699..807a4f8c7e4ef70e828585a500ebd67bc16fbe7d 100644 (file)
--- a/drivers/net/ethernet/intel/Makefile
+++ b/drivers/net/ethernet/intel/Makefile
@@ -14,3 +14,4 @@ obj-$(CONFIG_I40E) += i40e/
 obj-$(CONFIG_IXGB) += ixgb/
 obj-$(CONFIG_I40EVF) += i40evf/
 obj-$(CONFIG_FM10K) += fm10k/
+obj-$(CONFIG_ICE) += ice/

diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
new file mode 100644 (file)
index 0000000..7ea6295
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2018, Intel Corporation.
+
+#
+# Makefile for the Intel(R) Ethernet Connection E800 Series Linux Driver
+#
+
+obj-$(CONFIG_ICE) += ice.o
+
+ice-y := ice_main.o

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
new file mode 100644 (file)
index 0000000..e3c1672
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018, Intel Corporation. */
+
+#ifndef _ICE_H_
+#define _ICE_H_
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/compiler.h>
+#include <linux/pci.h>
+#include <linux/aer.h>
+#include <linux/bitmap.h>
+#include "ice_devids.h"
+#include "ice_type.h"
+
+#define ICE_BAR0               0
+
+#define ICE_DFLT_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+enum ice_state {
+       __ICE_DOWN,
+       __ICE_STATE_NBITS               /* must be last */
+};
+
+struct ice_pf {
+       struct pci_dev *pdev;
+       DECLARE_BITMAP(state, __ICE_STATE_NBITS);
+       u32 msg_enable;
+       struct ice_hw hw;
+};
+#endif /* _ICE_H_ */

diff --git a/drivers/net/ethernet/intel/ice/ice_devids.h b/drivers/net/ethernet/intel/ice/ice_devids.h
new file mode 100644 (file)
index 0000000..0e14d72
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_devids.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018, Intel Corporation. */
+
+#ifndef _ICE_DEVIDS_H_
+#define _ICE_DEVIDS_H_
+
+/* Device IDs */
+/* Intel(R) Ethernet Controller C810 for backplane */
+#define ICE_DEV_ID_C810_BACKPLANE      0x1591
+/* Intel(R) Ethernet Controller C810 for QSFP */
+#define ICE_DEV_ID_C810_QSFP           0x1592
+/* Intel(R) Ethernet Controller C810 for SFP */
+#define ICE_DEV_ID_C810_SFP            0x1593
+/* Intel(R) Ethernet Controller C810/X557-AT 10GBASE-T */
+#define ICE_DEV_ID_C810_10G_BASE_T     0x1594
+/* Intel(R) Ethernet Controller C810 1GbE */
+#define ICE_DEV_ID_C810_SGMII          0x1595
+
+#endif /* _ICE_DEVIDS_H_ */

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
new file mode 100644 (file)
index 0000000..3ada230
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2018, Intel Corporation. */
+
+/* Intel(R) Ethernet Connection E800 Series Linux Driver */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "ice.h"
+
+#define DRV_VERSION    "ice-0.0.1-k"
+#define DRV_SUMMARY    "Intel(R) Ethernet Connection E800 Series Linux Driver"
+static const char ice_drv_ver[] = DRV_VERSION;
+static const char ice_driver_string[] = DRV_SUMMARY;
+static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
+
+MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
+MODULE_DESCRIPTION(DRV_SUMMARY);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static int debug = -1;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "netif message level (0=none,...,0x7FFF=all)");
+
+/**
+ * ice_probe - Device initialization routine
+ * @pdev: PCI device information struct
+ * @ent: entry in ice_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int ice_probe(struct pci_dev *pdev,
+                    const struct pci_device_id __always_unused *ent)
+{
+       struct ice_pf *pf;
+       struct ice_hw *hw;
+       int err;
+
+       /* this driver uses devres, see Documentation/driver-model/devres.txt */
+       err = pcim_enable_device(pdev);
+       if (err)
+               return err;
+
+       err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev));
+       if (err) {
+               dev_err(&pdev->dev, "I/O map error %d\n", err);
+               return err;
+       }
+
+       pf = devm_kzalloc(&pdev->dev, sizeof(*pf), GFP_KERNEL);
+       if (!pf)
+               return -ENOMEM;
+
+       /* set up for high or low dma */
+       err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+       if (err)
+               err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+       if (err) {
+               dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err);
+               return err;
+       }
+
+       pci_enable_pcie_error_reporting(pdev);
+       pci_set_master(pdev);
+
+       pf->pdev = pdev;
+       pci_set_drvdata(pdev, pf);
+       set_bit(__ICE_DOWN, pf->state);
+
+       hw = &pf->hw;
+       hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
+       hw->back = pf;
+       hw->vendor_id = pdev->vendor;
+       hw->device_id = pdev->device;
+       pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
+       hw->subsystem_vendor_id = pdev->subsystem_vendor;
+       hw->subsystem_device_id = pdev->subsystem_device;
+       hw->bus.device = PCI_SLOT(pdev->devfn);
+       hw->bus.func = PCI_FUNC(pdev->devfn);
+       pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
+
+       return 0;
+}
+
+/**
+ * ice_remove - Device removal routine
+ * @pdev: PCI device information struct
+ */
+static void ice_remove(struct pci_dev *pdev)
+{
+       struct ice_pf *pf = pci_get_drvdata(pdev);
+
+       if (!pf)
+               return;
+
+       set_bit(__ICE_DOWN, pf->state);
+       pci_disable_pcie_error_reporting(pdev);
+}
+
+/* ice_pci_tbl - PCI Device ID Table
+ *
+ * Wildcard entries (PCI_ANY_ID) should come last
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ *   Class, Class Mask, private data (not used) }
+ */
+static const struct pci_device_id ice_pci_tbl[] = {
+       { PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_BACKPLANE), 0 },
+       { PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_QSFP), 0 },
+       { PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_SFP), 0 },
+       { PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_10G_BASE_T), 0 },
+       { PCI_VDEVICE(INTEL, ICE_DEV_ID_C810_SGMII), 0 },
+       /* required last entry */
+       { 0, }
+};
+MODULE_DEVICE_TABLE(pci, ice_pci_tbl);
+
+static struct pci_driver ice_driver = {
+       .name = KBUILD_MODNAME,
+       .id_table = ice_pci_tbl,
+       .probe = ice_probe,
+       .remove = ice_remove,
+};
+
+/**
+ * ice_module_init - Driver registration routine
+ *
+ * ice_module_init is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ */
+static int __init ice_module_init(void)
+{
+       int status;
+
+       pr_info("%s - version %s\n", ice_driver_string, ice_drv_ver);
+       pr_info("%s\n", ice_copyright);
+
+       status = pci_register_driver(&ice_driver);
+       if (status)
+               pr_err("failed to register pci driver, err %d\n", status);
+
+       return status;
+}
+module_init(ice_module_init);
+
+/**
+ * ice_module_exit - Driver exit cleanup routine
+ *
+ * ice_module_exit is called just before the driver is removed
+ * from memory.
+ */
+static void __exit ice_module_exit(void)
+{
+       pci_unregister_driver(&ice_driver);
+       pr_info("module unloaded\n");
+}
+module_exit(ice_module_exit);

diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
new file mode 100644 (file)
index 0000000..cd018f8
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018, Intel Corporation. */
+
+#ifndef _ICE_TYPE_H_
+#define _ICE_TYPE_H_
+
+/* Bus parameters */
+struct ice_bus_info {
+       u16 device;
+       u8 func;
+};
+
+/* Port hardware description */
+struct ice_hw {
+       u8 __iomem *hw_addr;
+       void *back;
+
+       /* pci info */
+       u16 device_id;
+       u16 vendor_id;
+       u16 subsystem_device_id;
+       u16 subsystem_vendor_id;
+       u8 revision_id;
+
+       struct ice_bus_info bus;
+};
+
+#endif /* _ICE_TYPE_H_ */