c752998b5e
The PCI lib defines the types and methods allowing to use PCI elements. The PCI bus implements a bus driver for PCI devices by constructing rte_bus elements using the PCI lib. Move the relevant code out of the EAL to its expected place. Libraries, drivers, unit tests and applications are updated to use the new rte_bus_pci.h header when necessary. Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
164 lines
4.3 KiB
C
164 lines
4.3 KiB
C
/*
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*
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* Copyright(c) 2016-2017 Cavium, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Cavium, Inc nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_EVENTDEV_PMD_PCI_H_
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#define _RTE_EVENTDEV_PMD_PCI_H_
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/** @file
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* RTE Eventdev PCI PMD APIs
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*
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* @note
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* These API are from event PCI PMD only and user applications should not call
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* them directly.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <string.h>
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#include <rte_eal.h>
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#include <rte_lcore.h>
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#include <rte_pci.h>
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#include <rte_bus_pci.h>
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#include "rte_eventdev_pmd.h"
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typedef int (*eventdev_pmd_pci_callback_t)(struct rte_eventdev *dev);
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/**
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* @internal
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* Wrapper for use by pci drivers as a .probe function to attach to a event
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* interface.
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*/
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static inline int
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rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
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struct rte_pci_device *pci_dev,
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size_t private_data_size,
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eventdev_pmd_pci_callback_t devinit)
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{
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struct rte_eventdev *eventdev;
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char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
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int retval;
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if (devinit == NULL)
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return -EINVAL;
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rte_pci_device_name(&pci_dev->addr, eventdev_name,
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sizeof(eventdev_name));
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eventdev = rte_event_pmd_allocate(eventdev_name,
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pci_dev->device.numa_node);
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if (eventdev == NULL)
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return -ENOMEM;
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if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
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eventdev->data->dev_private =
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rte_zmalloc_socket(
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"eventdev private structure",
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private_data_size,
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RTE_CACHE_LINE_SIZE,
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rte_socket_id());
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if (eventdev->data->dev_private == NULL)
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rte_panic("Cannot allocate memzone for private "
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"device data");
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}
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eventdev->dev = &pci_dev->device;
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/* Invoke PMD device initialization function */
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retval = devinit(eventdev);
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if (retval == 0)
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return 0;
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RTE_EDEV_LOG_ERR("driver %s: (vendor_id=0x%x device_id=0x%x)"
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" failed", pci_drv->driver.name,
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(unsigned int) pci_dev->id.vendor_id,
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(unsigned int) pci_dev->id.device_id);
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rte_event_pmd_release(eventdev);
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return -ENXIO;
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}
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/**
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* @internal
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* Wrapper for use by pci drivers as a .remove function to detach a event
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* interface.
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*/
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static inline int
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rte_event_pmd_pci_remove(struct rte_pci_device *pci_dev,
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eventdev_pmd_pci_callback_t devuninit)
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{
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struct rte_eventdev *eventdev;
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char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
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int ret = 0;
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if (pci_dev == NULL)
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return -EINVAL;
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rte_pci_device_name(&pci_dev->addr, eventdev_name,
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sizeof(eventdev_name));
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eventdev = rte_event_pmd_get_named_dev(eventdev_name);
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if (eventdev == NULL)
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return -ENODEV;
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ret = rte_event_dev_close(eventdev->data->dev_id);
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if (ret < 0)
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return ret;
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/* Invoke PMD device un-init function */
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if (devuninit)
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ret = devuninit(eventdev);
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if (ret)
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return ret;
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/* Free event device */
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rte_event_pmd_release(eventdev);
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eventdev->dev = NULL;
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTE_EVENTDEV_PMD_PCI_H_ */
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