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37 #include <sys/queue.h>
40 #include <rte_devargs.h>
41 #include <rte_debug.h>
42 #include <rte_devargs.h>
44 #include "eal_private.h"
46 /** Global list of device drivers. */
47 static struct rte_driver_list dev_driver_list =
48 TAILQ_HEAD_INITIALIZER(dev_driver_list);
50 /* register a driver */
52 rte_eal_driver_register(struct rte_driver *driver)
54 TAILQ_INSERT_TAIL(&dev_driver_list, driver, next);
57 /* unregister a driver */
59 rte_eal_driver_unregister(struct rte_driver *driver)
61 TAILQ_REMOVE(&dev_driver_list, driver, next);
65 rte_eal_dev_init(uint8_t init_pri)
67 struct rte_devargs *devargs;
68 struct rte_driver *driver;
71 * Note that the dev_driver_list is populated here
72 * from calls made to rte_eal_driver_register from constructor functions
73 * embedded into PMD modules via the PMD_REGISTER_DRIVER macro
76 /* call the init function for each virtual device */
77 TAILQ_FOREACH(devargs, &devargs_list, next) {
79 if (devargs->type != RTE_DEVTYPE_VIRTUAL)
82 TAILQ_FOREACH(driver, &dev_driver_list, next) {
83 /* RTE_DEVTYPE_VIRTUAL can only be a virtual or bonded device,
84 * virtual devices are initialized pre PCI probing and bonded
85 * device are post pci probing */
86 if ((driver->type == PMD_VDEV && init_pri ==
87 PMD_INIT_PRE_PCI_PROBE) ||
88 (driver->type == PMD_BDEV && init_pri ==
89 PMD_INIT_POST_PCI_PROBE)) {
91 /* search a driver prefix in virtual device name */
92 if (!strncmp(driver->name, devargs->virtual.drv_name,
93 strlen(driver->name))) {
94 printf("init (%u) %s\n", init_pri, devargs->virtual.drv_name);
95 driver->init(devargs->virtual.drv_name,
102 /* If initializing pre PCI probe, then we don't expect a bonded driver
104 if (init_pri == PMD_INIT_PRE_PCI_PROBE &&
105 strncmp(PMD_BOND_NAME, devargs->virtual.drv_name,
106 strlen(PMD_BOND_NAME)) != 0) {
107 if (driver == NULL) {
108 rte_panic("no driver found for virtual device %s\n",
109 devargs->virtual.drv_name);
111 } else if (init_pri == PMD_INIT_POST_PCI_PROBE &&
112 strncmp(PMD_BOND_NAME, devargs->virtual.drv_name,
113 strlen(PMD_BOND_NAME)) == 0) {
114 if (driver == NULL) {
115 rte_panic("no driver found for bonded device %s\n",
116 devargs->virtual.drv_name);
121 /* Once the vdevs are initialized, start calling all the pdev drivers */
122 if (init_pri == PMD_INIT_PRE_PCI_PROBE) {
123 TAILQ_FOREACH(driver, &dev_driver_list, next) {
124 if (driver->type != PMD_PDEV)
126 /* PDEV drivers don't get passed any parameters */
127 driver->init(NULL, NULL);