const struct rte_config *config = rte_eal_get_configuration();
struct internal_config *internal_conf =
eal_get_internal_configuration();
+ bool has_phys_addr;
+ enum rte_iova_mode iova_mode;
/* checks if the machine is adequate */
if (!rte_cpu_is_supported()) {
return -1;
}
- /* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */
- if (internal_conf->iova_mode == RTE_IOVA_DC) {
- /* autodetect the IOVA mapping mode (default is RTE_IOVA_PA) */
- enum rte_iova_mode iova_mode = rte_bus_get_iommu_class();
-
- if (iova_mode == RTE_IOVA_DC)
- iova_mode = RTE_IOVA_PA;
- rte_eal_get_configuration()->iova_mode = iova_mode;
- } else {
- rte_eal_get_configuration()->iova_mode =
- internal_conf->iova_mode;
+ /*
+ * PA are only available for hugepages via contigmem.
+ * If contigmem is inaccessible, rte_eal_hugepage_init() will fail
+ * with a message describing the cause.
+ */
+ has_phys_addr = internal_conf->no_hugetlbfs == 0;
+ iova_mode = internal_conf->iova_mode;
+ if (iova_mode == RTE_IOVA_PA && !has_phys_addr) {
+ rte_eal_init_alert("Cannot use IOVA as 'PA' since physical addresses are not available");
+ rte_errno = EINVAL;
+ return -1;
}
-
+ if (iova_mode == RTE_IOVA_DC) {
+ RTE_LOG(DEBUG, EAL, "Specific IOVA mode is not requested, autodetecting\n");
+ if (has_phys_addr) {
+ RTE_LOG(DEBUG, EAL, "Selecting IOVA mode according to bus requests\n");
+ iova_mode = rte_bus_get_iommu_class();
+ if (iova_mode == RTE_IOVA_DC)
+ iova_mode = RTE_IOVA_PA;
+ } else {
+ iova_mode = RTE_IOVA_VA;
+ }
+ }
+ rte_eal_get_configuration()->iova_mode = iova_mode;
RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n",
rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA");
__rte_unused int *vfio_dev_fd,
__rte_unused struct vfio_device_info *device_info)
{
+ rte_errno = ENOTSUP;
return -1;
}
__rte_unused const char *dev_addr,
__rte_unused int fd)
{
+ rte_errno = ENOTSUP;
return -1;
}
int rte_vfio_enable(__rte_unused const char *modname)
{
+ rte_errno = ENOTSUP;
return -1;
}
int rte_vfio_clear_group(__rte_unused int vfio_group_fd)
{
- return 0;
+ rte_errno = ENOTSUP;
+ return -1;
}
int
__rte_unused const char *dev_addr,
__rte_unused int *iommu_group_num)
{
+ rte_errno = ENOTSUP;
return -1;
}
int
rte_vfio_get_container_fd(void)
{
+ rte_errno = ENOTSUP;
return -1;
}
int
rte_vfio_get_group_fd(__rte_unused int iommu_group_num)
{
+ rte_errno = ENOTSUP;
return -1;
}
int
rte_vfio_container_create(void)
{
+ rte_errno = ENOTSUP;
return -1;
}
int
rte_vfio_container_destroy(__rte_unused int container_fd)
{
+ rte_errno = ENOTSUP;
return -1;
}
rte_vfio_container_group_bind(__rte_unused int container_fd,
__rte_unused int iommu_group_num)
{
+ rte_errno = ENOTSUP;
return -1;
}
rte_vfio_container_group_unbind(__rte_unused int container_fd,
__rte_unused int iommu_group_num)
{
+ rte_errno = ENOTSUP;
return -1;
}
__rte_unused uint64_t iova,
__rte_unused uint64_t len)
{
+ rte_errno = ENOTSUP;
return -1;
}
__rte_unused uint64_t iova,
__rte_unused uint64_t len)
{
+ rte_errno = ENOTSUP;
return -1;
}