diff options
| author | Anirudh Venkataramanan <anirudh.venkataramanan@intel.com> | 2018-03-20 07:58:05 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-03-26 08:28:02 -0700 |
| commit | 837f08fdecbe4b2ffc7725624342e73b886665a8 (patch) | |
| tree | e0d3aa1bd1e0af8c6161a641885a975b3c52184a /drivers/net/ethernet/intel/ice/ice_main.c | |
| parent | 996bfed118748c128ad4b6c05c09fd2f5fdfa1b4 (diff) | |
| download | lwn-837f08fdecbe4b2ffc7725624342e73b886665a8.tar.gz lwn-837f08fdecbe4b2ffc7725624342e73b886665a8.zip | |
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>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_main.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c new file mode 100644 index 000000000000..3ada230a3fc7 --- /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); |