DPDK  20.11.0
rte_eventdev_pmd_pci.h
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1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2016-2017 Cavium, Inc
3  */
4 
5 #ifndef _RTE_EVENTDEV_PMD_PCI_H_
6 #define _RTE_EVENTDEV_PMD_PCI_H_
7 
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20 
21 #include <string.h>
22 
23 #include <rte_config.h>
24 #include <rte_eal.h>
25 #include <rte_lcore.h>
26 #include <rte_pci.h>
27 #include <rte_bus_pci.h>
28 
29 #include "rte_eventdev_pmd.h"
30 
31 typedef int (*eventdev_pmd_pci_callback_t)(struct rte_eventdev *dev);
32 
39 __rte_experimental
40 static inline int
41 rte_event_pmd_pci_probe_named(struct rte_pci_driver *pci_drv,
42  struct rte_pci_device *pci_dev,
43  size_t private_data_size,
44  eventdev_pmd_pci_callback_t devinit,
45  const char *name)
46 {
47  struct rte_eventdev *eventdev;
48  int retval;
49 
50  if (devinit == NULL)
51  return -EINVAL;
52 
53  eventdev = rte_event_pmd_allocate(name,
54  pci_dev->device.numa_node);
55  if (eventdev == NULL)
56  return -ENOMEM;
57 
58  if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
59  eventdev->data->dev_private =
61  "eventdev private structure",
62  private_data_size,
63  RTE_CACHE_LINE_SIZE,
64  rte_socket_id());
65 
66  if (eventdev->data->dev_private == NULL)
67  rte_panic("Cannot allocate memzone for private "
68  "device data");
69  }
70 
71  eventdev->dev = &pci_dev->device;
72 
73  /* Invoke PMD device initialization function */
74  retval = devinit(eventdev);
75  if (retval == 0)
76  return 0;
77 
78  RTE_EDEV_LOG_ERR("driver %s: (vendor_id=0x%x device_id=0x%x)"
79  " failed", pci_drv->driver.name,
80  (unsigned int) pci_dev->id.vendor_id,
81  (unsigned int) pci_dev->id.device_id);
82 
83  rte_event_pmd_release(eventdev);
84 
85  return -ENXIO;
86 }
87 
93 static inline int
94 rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
95  struct rte_pci_device *pci_dev,
96  size_t private_data_size,
97  eventdev_pmd_pci_callback_t devinit)
98 {
99  char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
100 
101  rte_pci_device_name(&pci_dev->addr, eventdev_name,
102  sizeof(eventdev_name));
103 
104  return rte_event_pmd_pci_probe_named(pci_drv,
105  pci_dev,
106  private_data_size,
107  devinit,
108  eventdev_name);
109 }
110 
116 static inline int
117 rte_event_pmd_pci_remove(struct rte_pci_device *pci_dev,
118  eventdev_pmd_pci_callback_t devuninit)
119 {
120  struct rte_eventdev *eventdev;
121  char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
122  int ret = 0;
123 
124  if (pci_dev == NULL)
125  return -EINVAL;
126 
127  rte_pci_device_name(&pci_dev->addr, eventdev_name,
128  sizeof(eventdev_name));
129 
130  eventdev = rte_event_pmd_get_named_dev(eventdev_name);
131  if (eventdev == NULL)
132  return -ENODEV;
133 
134  if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
135  ret = rte_event_dev_close(eventdev->data->dev_id);
136  if (ret < 0)
137  return ret;
138  }
139 
140  /* Invoke PMD device un-init function */
141  if (devuninit)
142  ret = devuninit(eventdev);
143  if (ret)
144  return ret;
145 
146  /* Free event device */
147  rte_event_pmd_release(eventdev);
148 
149  eventdev->dev = NULL;
150 
151  return 0;
152 }
153 
154 #ifdef __cplusplus
155 }
156 #endif
157 
158 #endif /* _RTE_EVENTDEV_PMD_PCI_H_ */
enum rte_proc_type_t rte_eal_process_type(void)
int rte_event_pmd_release(struct rte_eventdev *eventdev)
unsigned int rte_socket_id(void)
struct rte_eventdev * rte_event_pmd_allocate(const char *name, int socket_id)
static struct rte_eventdev * rte_event_pmd_get_named_dev(const char *name)
#define rte_panic(...)
Definition: rte_debug.h:43
int rte_event_dev_close(uint8_t dev_id)
void * rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket) __rte_alloc_size(2)
void rte_pci_device_name(const struct rte_pci_addr *addr, char *output, size_t size)