#include <rte_malloc.h>
#include <rte_string_fns.h>
#include <rte_debug.h>
+#include <rte_devargs.h>
#include "rte_pci_dev_ids.h"
#include "eal_filesystem.h"
return -1;
}
+static int pci_mknod_uio_dev(const char *sysfs_uio_path, unsigned uio_num)
+{
+ FILE *f;
+ char filename[PATH_MAX];
+ int ret;
+ unsigned major, minor;
+ dev_t dev;
+
+ /* get the name of the sysfs file that contains the major and minor
+ * of the uio device and read its content */
+ rte_snprintf(filename, sizeof(filename), "%s/dev", sysfs_uio_path);
+
+ f = fopen(filename, "r");
+ if (f == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): cannot open sysfs to get major:minor\n",
+ __func__);
+ return -1;
+ }
+
+ ret = fscanf(f, "%d:%d", &major, &minor);
+ if (ret != 2) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs to get major:minor\n",
+ __func__);
+ fclose(f);
+ return -1;
+ }
+ fclose(f);
+
+ /* create the char device "mknod /dev/uioX c major minor" */
+ rte_snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num);
+ dev = makedev(major, minor);
+ ret = mknod(filename, S_IFCHR | S_IRUSR | S_IWUSR, dev);
+ if (f == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): mknod() failed %s\n",
+ __func__, strerror(errno));
+ return -1;
+ }
+
+ return ret;
+}
+
/*
* Return the uioX char device used for a pci device. On success, return
* the UIO number and fill dstbuf string with the path of the device in
if (e == NULL)
return -1;
- return 0;
+ /* create uio device if we've been asked to */
+ if (internal_config.create_uio_dev && pci_mknod_uio_dev(dstbuf, uio_num) < 0)
+ RTE_LOG(WARNING, EAL, "Cannot create /dev/uio%u\n", uio_num);
+
+ return uio_num;
}
/* map the PCI resource of a PCI device in virtual memory */
}
/* device is valid, add in list (sorted) */
- if (TAILQ_EMPTY(&device_list)) {
- TAILQ_INSERT_TAIL(&device_list, dev, next);
+ if (TAILQ_EMPTY(&pci_device_list)) {
+ TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
}
else {
struct rte_pci_device *dev2 = NULL;
- TAILQ_FOREACH(dev2, &device_list, next) {
+ TAILQ_FOREACH(dev2, &pci_device_list, next) {
if (pci_addr_comparison(&dev->addr, &dev2->addr))
continue;
else {
return 0;
}
}
- TAILQ_INSERT_TAIL(&device_list, dev, next);
+ TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
}
return 0;
dev->id.device_id, dr->name);
/* no initialization when blacklisted, return without error */
- if (dev->blacklisted) {
+ if (dev->devargs != NULL &&
+ dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
RTE_LOG(DEBUG, EAL, " Device is blacklisted, not initializing\n");
return 0;
}
int
rte_eal_pci_init(void)
{
- TAILQ_INIT(&driver_list);
- TAILQ_INIT(&device_list);
+ TAILQ_INIT(&pci_driver_list);
+ TAILQ_INIT(&pci_device_list);
uio_res_list = RTE_TAILQ_RESERVE_BY_IDX(RTE_TAILQ_PCI, uio_res_list);
/* for debug purposes, PCI can be disabled */