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+/*
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+ * Copyright (C) 2005 - 2011 Emulex
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+ * All rights reserved.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License version 2
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+ * as published by the Free Software Foundation. The full GNU General
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+ * Public License is included in this distribution in the file called COPYING.
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+ *
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+ * Contact Information:
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+ * linux-drivers@emulex.com
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+ *
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+ * Emulex
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+ * 3333 Susan Street
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+ * Costa Mesa, CA 92626
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+ */
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+
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+#include <linux/mutex.h>
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+#include <linux/list.h>
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+#include <linux/netdevice.h>
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+#include <linux/module.h>
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+
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+#include "be.h"
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+#include "be_cmds.h"
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+
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+static struct ocrdma_driver *ocrdma_drv;
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+static LIST_HEAD(be_adapter_list);
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+static DEFINE_MUTEX(be_adapter_list_lock);
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+
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+static void _be_roce_dev_add(struct be_adapter *adapter)
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+{
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+ struct be_dev_info dev_info;
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+ int i, num_vec;
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+ struct pci_dev *pdev = adapter->pdev;
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+
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+ if (!ocrdma_drv)
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+ return;
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+ if (pdev->device == OC_DEVICE_ID5) {
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+ /* only msix is supported on these devices */
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+ if (!msix_enabled(adapter))
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+ return;
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+ /* DPP region address and length */
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+ dev_info.dpp_unmapped_addr = pci_resource_start(pdev, 2);
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+ dev_info.dpp_unmapped_len = pci_resource_len(pdev, 2);
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+ } else {
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+ dev_info.dpp_unmapped_addr = 0;
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+ dev_info.dpp_unmapped_len = 0;
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+ }
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+ dev_info.pdev = adapter->pdev;
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+ if (adapter->sli_family == SKYHAWK_SLI_FAMILY)
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+ dev_info.db = adapter->db;
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+ else
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+ dev_info.db = adapter->roce_db.base;
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+ dev_info.unmapped_db = adapter->roce_db.io_addr;
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+ dev_info.db_page_size = adapter->roce_db.size;
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+ dev_info.db_total_size = adapter->roce_db.total_size;
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+ dev_info.netdev = adapter->netdev;
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+ memcpy(dev_info.mac_addr, adapter->netdev->dev_addr, ETH_ALEN);
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+ dev_info.dev_family = adapter->sli_family;
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+ if (msix_enabled(adapter)) {
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+ /* provide all the vectors, so that EQ creation response
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+ * can decide which one to use.
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+ */
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+ num_vec = adapter->num_msix_vec + adapter->num_msix_roce_vec;
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+ dev_info.intr_mode = BE_INTERRUPT_MODE_MSIX;
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+ dev_info.msix.num_vectors = min(num_vec, MAX_ROCE_MSIX_VECTORS);
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+ /* provide start index of the vector,
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+ * so in case of linear usage,
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+ * it can use the base as starting point.
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+ */
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+ dev_info.msix.start_vector = adapter->num_evt_qs;
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+ for (i = 0; i < dev_info.msix.num_vectors; i++) {
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+ dev_info.msix.vector_list[i] =
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+ adapter->msix_entries[i].vector;
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+ }
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+ } else {
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+ dev_info.msix.num_vectors = 0;
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+ dev_info.intr_mode = BE_INTERRUPT_MODE_INTX;
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+ }
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+ adapter->ocrdma_dev = ocrdma_drv->add(&dev_info);
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+}
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+
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+void be_roce_dev_add(struct be_adapter *adapter)
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+{
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+ if (be_roce_supported(adapter)) {
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+ INIT_LIST_HEAD(&adapter->entry);
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+ mutex_lock(&be_adapter_list_lock);
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+ list_add_tail(&adapter->entry, &be_adapter_list);
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+
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+ /* invoke add() routine of roce driver only if
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+ * valid driver registered with add method and add() is not yet
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+ * invoked on a given adapter.
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+ */
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+ _be_roce_dev_add(adapter);
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+ mutex_unlock(&be_adapter_list_lock);
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+ }
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+}
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+
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+void _be_roce_dev_remove(struct be_adapter *adapter)
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+{
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+ if (ocrdma_drv && ocrdma_drv->remove && adapter->ocrdma_dev)
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+ ocrdma_drv->remove(adapter->ocrdma_dev);
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+ adapter->ocrdma_dev = NULL;
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+}
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+
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+void be_roce_dev_remove(struct be_adapter *adapter)
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+{
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+ if (be_roce_supported(adapter)) {
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+ mutex_lock(&be_adapter_list_lock);
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+ _be_roce_dev_remove(adapter);
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+ list_del(&adapter->entry);
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+ mutex_unlock(&be_adapter_list_lock);
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+ }
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+}
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+
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+void _be_roce_dev_open(struct be_adapter *adapter)
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+{
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+ if (ocrdma_drv && adapter->ocrdma_dev &&
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+ ocrdma_drv->state_change_handler)
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+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev, 0);
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+}
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+
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+void be_roce_dev_open(struct be_adapter *adapter)
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+{
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+ if (be_roce_supported(adapter)) {
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+ mutex_lock(&be_adapter_list_lock);
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+ _be_roce_dev_open(adapter);
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+ mutex_unlock(&be_adapter_list_lock);
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+ }
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+}
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+
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+void _be_roce_dev_close(struct be_adapter *adapter)
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+{
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+ if (ocrdma_drv && adapter->ocrdma_dev &&
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+ ocrdma_drv->state_change_handler)
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+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev, 1);
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+}
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+
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+void be_roce_dev_close(struct be_adapter *adapter)
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+{
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+ if (be_roce_supported(adapter)) {
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+ mutex_lock(&be_adapter_list_lock);
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+ _be_roce_dev_close(adapter);
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+ mutex_unlock(&be_adapter_list_lock);
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+ }
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+}
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+
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+int be_roce_register_driver(struct ocrdma_driver *drv)
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+{
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+ struct be_adapter *dev;
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+
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+ mutex_lock(&be_adapter_list_lock);
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+ if (ocrdma_drv) {
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+ mutex_unlock(&be_adapter_list_lock);
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+ return -EINVAL;
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+ }
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+ ocrdma_drv = drv;
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+ list_for_each_entry(dev, &be_adapter_list, entry) {
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+ struct net_device *netdev;
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+ _be_roce_dev_add(dev);
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+ netdev = dev->netdev;
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+ if (netif_running(netdev) && netif_oper_up(netdev))
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+ _be_roce_dev_open(dev);
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+ }
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+ mutex_unlock(&be_adapter_list_lock);
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+ return 0;
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+}
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+EXPORT_SYMBOL(be_roce_register_driver);
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+
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+void be_roce_unregister_driver(struct ocrdma_driver *drv)
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+{
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+ struct be_adapter *dev;
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+
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+ mutex_lock(&be_adapter_list_lock);
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+ list_for_each_entry(dev, &be_adapter_list, entry) {
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+ if (dev->ocrdma_dev)
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+ _be_roce_dev_remove(dev);
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+ }
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+ ocrdma_drv = NULL;
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+ mutex_unlock(&be_adapter_list_lock);
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+}
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+EXPORT_SYMBOL(be_roce_unregister_driver);
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Parav Pandit