fm10k: Add skeletal frame for Intel(R) FM10000 Ethernet Switch Host Interface Driver
This patch adds the beginning framework onto which I am going to add the
fm10k driver which supports the Intel(R) FM10000 Ethernet Switch Host
Interface.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
new file mode 100644
index 0000000..12089ce
--- /dev/null
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
@@ -0,0 +1,145 @@
+/* Intel Ethernet Switch Host Interface Driver
+ * Copyright(c) 2013 - 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ */
+
+#include <linux/module.h>
+
+#include "fm10k.h"
+
+/**
+ * fm10k_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 fm10k_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, FM10K_DEV_ID_PF) },
+ /* required last entry */
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, fm10k_pci_tbl);
+
+/**
+ * fm10k_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in fm10k_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * fm10k_probe initializes an interface identified by a pci_dev structure.
+ * The OS initialization, configuring of the interface private structure,
+ * and a hardware reset occur.
+ **/
+static int fm10k_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ int err;
+ u64 dma_mask;
+
+ err = pci_enable_device_mem(pdev);
+ if (err)
+ return err;
+
+ /* By default fm10k only supports a 48 bit DMA mask */
+ dma_mask = DMA_BIT_MASK(48) | dma_get_required_mask(&pdev->dev);
+
+ if ((dma_mask <= DMA_BIT_MASK(32)) ||
+ dma_set_mask_and_coherent(&pdev->dev, dma_mask)) {
+ dma_mask &= DMA_BIT_MASK(32);
+
+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ err = dma_set_coherent_mask(&pdev->dev,
+ DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev,
+ "No usable DMA configuration, aborting\n");
+ goto err_dma;
+ }
+ }
+ }
+
+ err = pci_request_selected_regions(pdev,
+ pci_select_bars(pdev,
+ IORESOURCE_MEM),
+ fm10k_driver_name);
+ if (err) {
+ dev_err(&pdev->dev,
+ "pci_request_selected_regions failed 0x%x\n", err);
+ goto err_pci_reg;
+ }
+
+ pci_set_master(pdev);
+ pci_save_state(pdev);
+
+ return 0;
+
+err_pci_reg:
+err_dma:
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * fm10k_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * fm10k_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device. The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void fm10k_remove(struct pci_dev *pdev)
+{
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+
+ pci_disable_device(pdev);
+}
+
+static struct pci_driver fm10k_driver = {
+ .name = fm10k_driver_name,
+ .id_table = fm10k_pci_tbl,
+ .probe = fm10k_probe,
+ .remove = fm10k_remove,
+};
+
+/**
+ * fm10k_register_pci_driver - register driver interface
+ *
+ * This funciton is called on module load in order to register the driver.
+ **/
+int fm10k_register_pci_driver(void)
+{
+ return pci_register_driver(&fm10k_driver);
+}
+
+/**
+ * fm10k_unregister_pci_driver - unregister driver interface
+ *
+ * This funciton is called on module unload in order to remove the driver.
+ **/
+void fm10k_unregister_pci_driver(void)
+{
+ pci_unregister_driver(&fm10k_driver);
+}