4 * Copyright(c) 2017 Brocade Communications Systems, Inc.
5 * Author: Jan Blunck <jblunck@infradead.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of the copyright holder nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #ifndef _RTE_ETHDEV_PCI_H_
35 #define _RTE_ETHDEV_PCI_H_
37 #include <rte_malloc.h>
39 #include <rte_ethdev.h>
43 * Allocates a new ethdev slot for an ethernet device and returns the pointer
44 * to that slot for the driver to use.
47 * Pointer to the PCI device
49 * @param private_data_size
50 * Size of private data structure
53 * A pointer to a rte_eth_dev or NULL if allocation failed.
55 static inline struct rte_eth_dev *
56 rte_eth_dev_pci_allocate(struct rte_pci_device *dev, size_t private_data_size)
58 struct rte_eth_dev *eth_dev;
64 name = dev->device.name;
66 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
67 eth_dev = rte_eth_dev_allocate(name);
71 if (private_data_size) {
72 eth_dev->data->dev_private = rte_zmalloc_socket(name,
73 private_data_size, RTE_CACHE_LINE_SIZE,
74 dev->device.numa_node);
75 if (!eth_dev->data->dev_private) {
76 rte_eth_dev_release_port(eth_dev);
81 eth_dev = rte_eth_dev_attach_secondary(name);
86 eth_dev->device = &dev->device;
87 eth_dev->driver = NULL;
88 eth_dev->intr_handle = &dev->intr_handle;
89 rte_eth_copy_pci_info(eth_dev, dev);
94 rte_eth_dev_pci_release(struct rte_eth_dev *eth_dev)
96 /* free ether device */
97 rte_eth_dev_release_port(eth_dev);
99 if (rte_eal_process_type() == RTE_PROC_PRIMARY)
100 rte_free(eth_dev->data->dev_private);
102 eth_dev->data->dev_private = NULL;
104 eth_dev->device = NULL;
105 eth_dev->driver = NULL;
106 eth_dev->intr_handle = NULL;
109 typedef int (*eth_dev_pci_callback_t)(struct rte_eth_dev *eth_dev);
113 * Wrapper for use by pci drivers in a .probe function to attach to a ethdev
117 rte_eth_dev_pci_generic_probe(struct rte_pci_device *pci_dev,
118 size_t private_data_size, eth_dev_pci_callback_t dev_init)
120 struct rte_eth_dev *eth_dev;
123 eth_dev = rte_eth_dev_pci_allocate(pci_dev, private_data_size);
127 RTE_FUNC_PTR_OR_ERR_RET(*dev_init, -EINVAL);
128 ret = dev_init(eth_dev);
130 rte_eth_dev_pci_release(eth_dev);
137 * Wrapper for use by pci drivers in a .remove function to detach a ethdev
141 rte_eth_dev_pci_generic_remove(struct rte_pci_device *pci_dev,
142 eth_dev_pci_callback_t dev_uninit)
144 struct rte_eth_dev *eth_dev;
147 eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
152 ret = dev_uninit(eth_dev);
157 rte_eth_dev_pci_release(eth_dev);
161 #endif /* _RTE_ETHDEV_PCI_H_ */