1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*-
* BSD LICENSE
*
* Copyright(c) 2017 Brocade Communications Systems, Inc.
* Author: Jan Blunck <jblunck@infradead.org>
*
* 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 the copyright holder 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_ETHDEV_PCI_H_
#define _RTE_ETHDEV_PCI_H_
#include <rte_malloc.h>
#include <rte_pci.h>
#include <rte_bus_pci.h>
#include <rte_config.h>
#include <rte_ethdev_driver.h>
/**
* Copy pci device info to the Ethernet device data.
*
* @param eth_dev
* The *eth_dev* pointer is the address of the *rte_eth_dev* structure.
* @param pci_dev
* The *pci_dev* pointer is the address of the *rte_pci_device* structure.
*/
static inline void
rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
struct rte_pci_device *pci_dev)
{
if ((eth_dev == NULL) || (pci_dev == NULL)) {
RTE_ETHDEV_LOG(ERR, "NULL pointer eth_dev=%p pci_dev=%p",
(void *)eth_dev, (void *)pci_dev);
return;
}
eth_dev->intr_handle = &pci_dev->intr_handle;
eth_dev->data->dev_flags = 0;
if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV)
eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV;
eth_dev->data->kdrv = pci_dev->kdrv;
eth_dev->data->numa_node = pci_dev->device.numa_node;
}
static inline int
eth_dev_pci_specific_init(struct rte_eth_dev *eth_dev, void *bus_device) {
struct rte_pci_device *pci_dev = bus_device;
if (!pci_dev)
return -ENODEV;
rte_eth_copy_pci_info(eth_dev, pci_dev);
return 0;
}
/**
* @internal
* Allocates a new ethdev slot for an ethernet device and returns the pointer
* to that slot for the driver to use.
*
* @param dev
* Pointer to the PCI device
*
* @param private_data_size
* Size of private data structure
*
* @return
* A pointer to a rte_eth_dev or NULL if allocation failed.
*/
static inline struct rte_eth_dev *
rte_eth_dev_pci_allocate(struct rte_pci_device *dev, size_t private_data_size)
{
struct rte_eth_dev *eth_dev;
const char *name;
if (!dev)
return NULL;
name = dev->device.name;
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
eth_dev = rte_eth_dev_allocate(name);
if (!eth_dev)
return NULL;
if (private_data_size) {
eth_dev->data->dev_private = rte_zmalloc_socket(name,
private_data_size, RTE_CACHE_LINE_SIZE,
dev->device.numa_node);
if (!eth_dev->data->dev_private) {
rte_eth_dev_release_port(eth_dev);
return NULL;
}
}
} else {
eth_dev = rte_eth_dev_attach_secondary(name);
if (!eth_dev)
return NULL;
}
eth_dev->device = &dev->device;
rte_eth_copy_pci_info(eth_dev, dev);
return eth_dev;
}
static inline void
rte_eth_dev_pci_release(struct rte_eth_dev *eth_dev)
{
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_free(eth_dev->data->dev_private);
eth_dev->data->dev_private = NULL;
/*
* Secondary process will check the name to attach.
* Clear this field to avoid attaching a released ports.
*/
eth_dev->data->name[0] = '\0';
eth_dev->device = NULL;
eth_dev->intr_handle = NULL;
/* free ether device */
rte_eth_dev_release_port(eth_dev);
}
typedef int (*eth_dev_pci_callback_t)(struct rte_eth_dev *eth_dev);
/**
* @internal
* Wrapper for use by pci drivers in a .probe function to attach to a ethdev
* interface.
*/
static inline int
rte_eth_dev_pci_generic_probe(struct rte_pci_device *pci_dev,
size_t private_data_size, eth_dev_pci_callback_t dev_init)
{
struct rte_eth_dev *eth_dev;
int ret;
eth_dev = rte_eth_dev_pci_allocate(pci_dev, private_data_size);
if (!eth_dev)
return -ENOMEM;
RTE_FUNC_PTR_OR_ERR_RET(*dev_init, -EINVAL);
ret = dev_init(eth_dev);
if (ret)
rte_eth_dev_pci_release(eth_dev);
else
rte_eth_dev_probing_finish(eth_dev);
return ret;
}
/**
* @internal
* Wrapper for use by pci drivers in a .remove function to detach a ethdev
* interface.
*/
static inline int
rte_eth_dev_pci_generic_remove(struct rte_pci_device *pci_dev,
eth_dev_pci_callback_t dev_uninit)
{
struct rte_eth_dev *eth_dev;
int ret;
eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
if (!eth_dev)
return -ENODEV;
if (dev_uninit) {
ret = dev_uninit(eth_dev);
if (ret)
return ret;
}
rte_eth_dev_pci_release(eth_dev);
return 0;
}
#endif /* _RTE_ETHDEV_PCI_H_ */
|
