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,
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34 #ifndef _RTE_ETHDEV_PCI_H_
35 #define _RTE_ETHDEV_PCI_H_
37 #include <rte_malloc.h>
39 #include <rte_ethdev.h>
42 * Copy pci device info to the Ethernet device data.
45 * The *eth_dev* pointer is the address of the *rte_eth_dev* structure.
47 * The *pci_dev* pointer is the address of the *rte_pci_device* structure.
50 rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
51 struct rte_pci_device *pci_dev)
53 if ((eth_dev == NULL) || (pci_dev == NULL)) {
54 RTE_PMD_DEBUG_TRACE("NULL pointer eth_dev=%p pci_dev=%p\n",
59 eth_dev->intr_handle = &pci_dev->intr_handle;
61 eth_dev->data->dev_flags = 0;
62 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
63 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
64 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV)
65 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV;
67 eth_dev->data->kdrv = pci_dev->kdrv;
68 eth_dev->data->numa_node = pci_dev->device.numa_node;
73 * Allocates a new ethdev slot for an ethernet device and returns the pointer
74 * to that slot for the driver to use.
77 * Pointer to the PCI device
79 * @param private_data_size
80 * Size of private data structure
83 * A pointer to a rte_eth_dev or NULL if allocation failed.
85 static inline struct rte_eth_dev *
86 rte_eth_dev_pci_allocate(struct rte_pci_device *dev, size_t private_data_size)
88 struct rte_eth_dev *eth_dev;
94 name = dev->device.name;
96 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
97 eth_dev = rte_eth_dev_allocate(name);
101 if (private_data_size) {
102 eth_dev->data->dev_private = rte_zmalloc_socket(name,
103 private_data_size, RTE_CACHE_LINE_SIZE,
104 dev->device.numa_node);
105 if (!eth_dev->data->dev_private) {
106 rte_eth_dev_release_port(eth_dev);
111 eth_dev = rte_eth_dev_attach_secondary(name);
116 eth_dev->device = &dev->device;
117 rte_eth_copy_pci_info(eth_dev, dev);
122 rte_eth_dev_pci_release(struct rte_eth_dev *eth_dev)
124 /* free ether device */
125 rte_eth_dev_release_port(eth_dev);
127 if (rte_eal_process_type() == RTE_PROC_PRIMARY)
128 rte_free(eth_dev->data->dev_private);
130 eth_dev->data->dev_private = NULL;
133 * Secondary process will check the name to attach.
134 * Clear this field to avoid attaching a released ports.
136 eth_dev->data->name[0] = '\0';
138 eth_dev->device = NULL;
139 eth_dev->intr_handle = NULL;
142 typedef int (*eth_dev_pci_callback_t)(struct rte_eth_dev *eth_dev);
146 * Wrapper for use by pci drivers in a .probe function to attach to a ethdev
150 rte_eth_dev_pci_generic_probe(struct rte_pci_device *pci_dev,
151 size_t private_data_size, eth_dev_pci_callback_t dev_init)
153 struct rte_eth_dev *eth_dev;
156 eth_dev = rte_eth_dev_pci_allocate(pci_dev, private_data_size);
160 RTE_FUNC_PTR_OR_ERR_RET(*dev_init, -EINVAL);
161 ret = dev_init(eth_dev);
163 rte_eth_dev_pci_release(eth_dev);
170 * Wrapper for use by pci drivers in a .remove function to detach a ethdev
174 rte_eth_dev_pci_generic_remove(struct rte_pci_device *pci_dev,
175 eth_dev_pci_callback_t dev_uninit)
177 struct rte_eth_dev *eth_dev;
180 eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
185 ret = dev_uninit(eth_dev);
190 rte_eth_dev_pci_release(eth_dev);
194 #endif /* _RTE_ETHDEV_PCI_H_ */