--- /dev/null
+/*
+ * Copyright (C) 2005 - 2014 Emulex
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation. The full GNU General
+ * Public License is included in this distribution in the file called COPYING.
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ */
+
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/module.h>
+
+#include "be.h"
+#include "be_cmds.h"
+
+static struct ocrdma_driver *ocrdma_drv;
+static LIST_HEAD(be_adapter_list);
+static DEFINE_MUTEX(be_adapter_list_lock);
+
+static void _be_roce_dev_add(struct be_adapter *adapter)
+{
+ struct be_dev_info dev_info;
+ int i, num_vec;
+ struct pci_dev *pdev = adapter->pdev;
+
+ if (!ocrdma_drv)
+ return;
+
+ if (ocrdma_drv->be_abi_version != BE_ROCE_ABI_VERSION) {
+ dev_warn(&pdev->dev, "Cannot initialize RoCE due to ocrdma ABI mismatch\n");
+ return;
+ }
+
+ if (pdev->device == OC_DEVICE_ID5) {
+ /* only msix is supported on these devices */
+ if (!msix_enabled(adapter))
+ return;
+ /* DPP region address and length */
+ dev_info.dpp_unmapped_addr = pci_resource_start(pdev, 2);
+ dev_info.dpp_unmapped_len = pci_resource_len(pdev, 2);
+ } else {
+ dev_info.dpp_unmapped_addr = 0;
+ dev_info.dpp_unmapped_len = 0;
+ }
+ dev_info.pdev = adapter->pdev;
+ dev_info.db = adapter->db;
+ dev_info.unmapped_db = adapter->roce_db.io_addr;
+ dev_info.db_page_size = adapter->roce_db.size;
+ dev_info.db_total_size = adapter->roce_db.total_size;
+ dev_info.netdev = adapter->netdev;
+ memcpy(dev_info.mac_addr, adapter->netdev->dev_addr, ETH_ALEN);
+ dev_info.dev_family = adapter->sli_family;
+ if (msix_enabled(adapter)) {
+ /* provide all the vectors, so that EQ creation response
+ * can decide which one to use.
+ */
+ num_vec = adapter->num_msix_vec + adapter->num_msix_roce_vec;
+ dev_info.intr_mode = BE_INTERRUPT_MODE_MSIX;
+ dev_info.msix.num_vectors = min(num_vec, MAX_MSIX_VECTORS);
+ /* provide start index of the vector,
+ * so in case of linear usage,
+ * it can use the base as starting point.
+ */
+ dev_info.msix.start_vector = adapter->num_evt_qs;
+ for (i = 0; i < dev_info.msix.num_vectors; i++) {
+ dev_info.msix.vector_list[i] =
+ adapter->msix_entries[i].vector;
+ }
+ } else {
+ dev_info.msix.num_vectors = 0;
+ dev_info.intr_mode = BE_INTERRUPT_MODE_INTX;
+ }
+ adapter->ocrdma_dev = ocrdma_drv->add(&dev_info);
+}
+
+void be_roce_dev_add(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ INIT_LIST_HEAD(&adapter->entry);
+ mutex_lock(&be_adapter_list_lock);
+ list_add_tail(&adapter->entry, &be_adapter_list);
+
+ /* invoke add() routine of roce driver only if
+ * valid driver registered with add method and add() is not yet
+ * invoked on a given adapter.
+ */
+ _be_roce_dev_add(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+static void _be_roce_dev_remove(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && ocrdma_drv->remove && adapter->ocrdma_dev)
+ ocrdma_drv->remove(adapter->ocrdma_dev);
+ adapter->ocrdma_dev = NULL;
+}
+
+void be_roce_dev_remove(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_remove(adapter);
+ list_del(&adapter->entry);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+static void _be_roce_dev_open(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && adapter->ocrdma_dev &&
+ ocrdma_drv->state_change_handler)
+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev,
+ BE_DEV_UP);
+}
+
+void be_roce_dev_open(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_open(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+static void _be_roce_dev_close(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && adapter->ocrdma_dev &&
+ ocrdma_drv->state_change_handler)
+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev,
+ BE_DEV_DOWN);
+}
+
+void be_roce_dev_close(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_close(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+void be_roce_dev_shutdown(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ if (ocrdma_drv && adapter->ocrdma_dev &&
+ ocrdma_drv->state_change_handler)
+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev,
+ BE_DEV_SHUTDOWN);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+int be_roce_register_driver(struct ocrdma_driver *drv)
+{
+ struct be_adapter *dev;
+
+ mutex_lock(&be_adapter_list_lock);
+ if (ocrdma_drv) {
+ mutex_unlock(&be_adapter_list_lock);
+ return -EINVAL;
+ }
+ ocrdma_drv = drv;
+ list_for_each_entry(dev, &be_adapter_list, entry) {
+ struct net_device *netdev;
+
+ _be_roce_dev_add(dev);
+ netdev = dev->netdev;
+ if (netif_running(netdev) && netif_oper_up(netdev))
+ _be_roce_dev_open(dev);
+ }
+ mutex_unlock(&be_adapter_list_lock);
+ return 0;
+}
+EXPORT_SYMBOL(be_roce_register_driver);
+
+void be_roce_unregister_driver(struct ocrdma_driver *drv)
+{
+ struct be_adapter *dev;
+
+ mutex_lock(&be_adapter_list_lock);
+ list_for_each_entry(dev, &be_adapter_list, entry) {
+ if (dev->ocrdma_dev)
+ _be_roce_dev_remove(dev);
+ }
+ ocrdma_drv = NULL;
+ mutex_unlock(&be_adapter_list_lock);
+}
+EXPORT_SYMBOL(be_roce_unregister_driver);
Code Review / kvmfornfv.git / blobdiff