cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/emulex/benet/be_roce.c

/*
 * Copyright (C) 2005 - 2016 Broadcom
 * 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); }

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PersonTokensPropCommitsCommitProp
Parav Pandit28592.83%133.33%
Devesh Sharma216.84%133.33%
Sathya Perla10.33%133.33%
Total307100.00%3100.00%


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); } }

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Parav Pandit56100.00%1100.00%
Total56100.00%1100.00%


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; }

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Parav Pandit3797.37%150.00%
Jingoo Han12.63%150.00%
Total38100.00%2100.00%


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); } }

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Parav Pandit44100.00%1100.00%
Total44100.00%1100.00%


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); } }

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Devesh Sharma54100.00%1100.00%
Total54100.00%1100.00%


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; } mutex_unlock(&be_adapter_list_lock); return 0; }

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Parav Pandit76100.00%1100.00%
Total76100.00%1100.00%

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); }

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Parav Pandit52100.00%1100.00%
Total52100.00%1100.00%

EXPORT_SYMBOL(be_roce_unregister_driver);

Overall Contributors

PersonTokensPropCommitsCommitProp
Parav Pandit59688.43%116.67%
Devesh Sharma7511.13%233.33%
Jingoo Han10.15%116.67%
Somnath Kotur10.15%116.67%
Sathya Perla10.15%116.67%
Total674100.00%6100.00%
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