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/*
*
* Copyright(c) 2016-2017 Cavium, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Cavium, Inc nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTE_EVENTDEV_PMD_PCI_H_
#define _RTE_EVENTDEV_PMD_PCI_H_
/** @file
* RTE Eventdev PCI PMD APIs
*
* @note
* These API are from event PCI PMD only and user applications should not call
* them directly.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <string.h>
#include <rte_config.h>
#include <rte_eal.h>
#include <rte_lcore.h>
#include <rte_pci.h>
#include <rte_bus_pci.h>
#include "rte_eventdev_pmd.h"
typedef int (*eventdev_pmd_pci_callback_t)(struct rte_eventdev *dev);
/**
* @internal
* Wrapper for use by pci drivers as a .probe function to attach to a event
* interface.
*/
static inline int
rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
struct rte_pci_device *pci_dev,
size_t private_data_size,
eventdev_pmd_pci_callback_t devinit)
{
struct rte_eventdev *eventdev;
char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
int retval;
if (devinit == NULL)
return -EINVAL;
rte_pci_device_name(&pci_dev->addr, eventdev_name,
sizeof(eventdev_name));
eventdev = rte_event_pmd_allocate(eventdev_name,
pci_dev->device.numa_node);
if (eventdev == NULL)
return -ENOMEM;
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
eventdev->data->dev_private =
rte_zmalloc_socket(
"eventdev private structure",
private_data_size,
RTE_CACHE_LINE_SIZE,
rte_socket_id());
if (eventdev->data->dev_private == NULL)
rte_panic("Cannot allocate memzone for private "
"device data");
}
eventdev->dev = &pci_dev->device;
/* Invoke PMD device initialization function */
retval = devinit(eventdev);
if (retval == 0)
return 0;
RTE_EDEV_LOG_ERR("driver %s: (vendor_id=0x%x device_id=0x%x)"
" failed", pci_drv->driver.name,
(unsigned int) pci_dev->id.vendor_id,
(unsigned int) pci_dev->id.device_id);
rte_event_pmd_release(eventdev);
return -ENXIO;
}
/**
* @internal
* Wrapper for use by pci drivers as a .remove function to detach a event
* interface.
*/
static inline int
rte_event_pmd_pci_remove(struct rte_pci_device *pci_dev,
eventdev_pmd_pci_callback_t devuninit)
{
struct rte_eventdev *eventdev;
char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
int ret = 0;
if (pci_dev == NULL)
return -EINVAL;
rte_pci_device_name(&pci_dev->addr, eventdev_name,
sizeof(eventdev_name));
eventdev = rte_event_pmd_get_named_dev(eventdev_name);
if (eventdev == NULL)
return -ENODEV;
ret = rte_event_dev_close(eventdev->data->dev_id);
if (ret < 0)
return ret;
/* Invoke PMD device un-init function */
if (devuninit)
ret = devuninit(eventdev);
if (ret)
return ret;
/* Free event device */
rte_event_pmd_release(eventdev);
eventdev->dev = NULL;
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* _RTE_EVENTDEV_PMD_PCI_H_ */
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