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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2005 - 2016 Broadcom
* All rights reserved.
*
* 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);
}
}
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) {
_be_roce_dev_add(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);
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