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33 /* This file manages the list of devices and their arguments, as given
34 * by the user at startup
36 * Code here should not call rte_log since the EAL environment
37 * may not be initialized.
44 #include <rte_devargs.h>
45 #include "eal_private.h"
47 /** Global list of user devices */
48 struct rte_devargs_list devargs_list =
49 TAILQ_HEAD_INITIALIZER(devargs_list);
52 rte_eal_parse_devargs_str(const char *devargs_str,
53 char **drvname, char **drvargs)
57 if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
60 *drvname = strdup(devargs_str);
64 /* set the first ',' to '\0' to split name and arguments */
65 sep = strchr(*drvname, ',');
68 *drvargs = strdup(sep + 1);
70 *drvargs = strdup("");
73 if (*drvargs == NULL) {
82 bus_name_cmp(const struct rte_bus *bus, const void *name)
84 return strncmp(bus->name, name, strlen(bus->name));
87 /* store a whitelist parameter for later parsing */
89 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
91 struct rte_devargs *devargs = NULL;
92 struct rte_bus *bus = NULL;
97 /* use malloc instead of rte_malloc as it's called early at init */
98 devargs = malloc(sizeof(*devargs));
102 memset(devargs, 0, sizeof(*devargs));
103 devargs->type = devtype;
105 if (rte_eal_parse_devargs_str(devargs_str, &dev, &devargs->args))
109 bus = rte_bus_find(bus, bus_name_cmp, dev);
112 devname = dev + strlen(bus->name) + 1;
113 if (rte_bus_find_by_device_name(devname) == bus)
118 bus = rte_bus_find_by_device_name(devname);
120 fprintf(stderr, "ERROR: failed to parse bus info from device declaration\n");
126 switch (devargs->type) {
127 case RTE_DEVTYPE_WHITELISTED_PCI:
128 case RTE_DEVTYPE_BLACKLISTED_PCI:
129 /* try to parse pci identifier */
130 if (bus->parse(devname, &devargs->pci.addr) != 0)
134 case RTE_DEVTYPE_VIRTUAL:
135 /* save driver name */
136 ret = snprintf(devargs->virt.drv_name,
137 sizeof(devargs->virt.drv_name), "%s", devname);
138 if (ret < 0 || ret >= (int)sizeof(devargs->virt.drv_name))
143 if (devargs->type == RTE_DEVTYPE_WHITELISTED_PCI) {
144 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
145 bus->conf.scan_mode = RTE_BUS_SCAN_WHITELIST;
146 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_BLACKLIST) {
147 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
150 } else if (devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
151 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
152 bus->conf.scan_mode = RTE_BUS_SCAN_BLACKLIST;
153 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_WHITELIST) {
154 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
160 TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
173 /* count the number of devices of a specified type */
175 rte_eal_devargs_type_count(enum rte_devtype devtype)
177 struct rte_devargs *devargs;
178 unsigned int count = 0;
180 TAILQ_FOREACH(devargs, &devargs_list, next) {
181 if (devargs->type != devtype)
188 /* dump the user devices on the console */
190 rte_eal_devargs_dump(FILE *f)
192 struct rte_devargs *devargs;
194 fprintf(f, "User device white list:\n");
195 TAILQ_FOREACH(devargs, &devargs_list, next) {
196 if (devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
197 fprintf(f, " PCI whitelist " PCI_PRI_FMT " %s\n",
198 devargs->pci.addr.domain,
199 devargs->pci.addr.bus,
200 devargs->pci.addr.devid,
201 devargs->pci.addr.function,
203 else if (devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI)
204 fprintf(f, " PCI blacklist " PCI_PRI_FMT " %s\n",
205 devargs->pci.addr.domain,
206 devargs->pci.addr.bus,
207 devargs->pci.addr.devid,
208 devargs->pci.addr.function,
210 else if (devargs->type == RTE_DEVTYPE_VIRTUAL)
211 fprintf(f, " VIRTUAL %s %s\n",
212 devargs->virt.drv_name,
215 fprintf(f, " UNKNOWN %s\n", devargs->args);