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,
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27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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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_bus_pci.h>
40 #include <rte_config.h>
41 #include <rte_ethdev_driver.h>
44 * Copy pci device info to the Ethernet device data.
47 * The *eth_dev* pointer is the address of the *rte_eth_dev* structure.
49 * The *pci_dev* pointer is the address of the *rte_pci_device* structure.
52 rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
53 struct rte_pci_device *pci_dev)
55 if ((eth_dev == NULL) || (pci_dev == NULL)) {
56 RTE_ETHDEV_LOG(ERR, "NULL pointer eth_dev=%p pci_dev=%p",
57 (void *)eth_dev, (void *)pci_dev);
61 eth_dev->intr_handle = &pci_dev->intr_handle;
63 eth_dev->data->dev_flags = 0;
64 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
65 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
66 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV)
67 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV;
69 eth_dev->data->kdrv = pci_dev->kdrv;
70 eth_dev->data->numa_node = pci_dev->device.numa_node;
74 eth_dev_pci_specific_init(struct rte_eth_dev *eth_dev, void *bus_device) {
75 struct rte_pci_device *pci_dev = bus_device;
80 rte_eth_copy_pci_info(eth_dev, pci_dev);
87 * Allocates a new ethdev slot for an ethernet device and returns the pointer
88 * to that slot for the driver to use.
91 * Pointer to the PCI device
93 * @param private_data_size
94 * Size of private data structure
97 * A pointer to a rte_eth_dev or NULL if allocation failed.
99 static inline struct rte_eth_dev *
100 rte_eth_dev_pci_allocate(struct rte_pci_device *dev, size_t private_data_size)
102 struct rte_eth_dev *eth_dev;
108 name = dev->device.name;
110 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
111 eth_dev = rte_eth_dev_allocate(name);
115 if (private_data_size) {
116 eth_dev->data->dev_private = rte_zmalloc_socket(name,
117 private_data_size, RTE_CACHE_LINE_SIZE,
118 dev->device.numa_node);
119 if (!eth_dev->data->dev_private) {
120 rte_eth_dev_release_port(eth_dev);
125 eth_dev = rte_eth_dev_attach_secondary(name);
130 eth_dev->device = &dev->device;
131 rte_eth_copy_pci_info(eth_dev, dev);
136 rte_eth_dev_pci_release(struct rte_eth_dev *eth_dev)
138 eth_dev->device = NULL;
139 eth_dev->intr_handle = NULL;
141 /* free ether device */
142 rte_eth_dev_release_port(eth_dev);
145 typedef int (*eth_dev_pci_callback_t)(struct rte_eth_dev *eth_dev);
149 * Wrapper for use by pci drivers in a .probe function to attach to a ethdev
153 rte_eth_dev_pci_generic_probe(struct rte_pci_device *pci_dev,
154 size_t private_data_size, eth_dev_pci_callback_t dev_init)
156 struct rte_eth_dev *eth_dev;
159 eth_dev = rte_eth_dev_pci_allocate(pci_dev, private_data_size);
163 RTE_FUNC_PTR_OR_ERR_RET(*dev_init, -EINVAL);
164 ret = dev_init(eth_dev);
166 rte_eth_dev_pci_release(eth_dev);
168 rte_eth_dev_probing_finish(eth_dev);
175 * Wrapper for use by pci drivers in a .remove function to detach a ethdev
179 rte_eth_dev_pci_generic_remove(struct rte_pci_device *pci_dev,
180 eth_dev_pci_callback_t dev_uninit)
182 struct rte_eth_dev *eth_dev;
185 eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
190 ret = dev_uninit(eth_dev);
195 rte_eth_dev_pci_release(eth_dev);
199 #endif /* _RTE_ETHDEV_PCI_H_ */