int
efrm_filter_resource_alloc(struct vi_resource *vi_parent,
struct filter_resource **frs_out)
{
struct filter_resource *frs;
int rc, instance;
EFRM_ASSERT(frs_out);
EFRM_ASSERT(efrm_filter_manager);
EFRM_RESOURCE_MANAGER_ASSERT_VALID(&efrm_filter_manager->rm);
EFRM_ASSERT(vi_parent != NULL);
EFRM_ASSERT(EFRM_RESOURCE_TYPE(vi_parent->rs.rs_handle) ==
EFRM_RESOURCE_VI);
/* Allocate resource data structure. This is called in atomic
* context by the onload driver.
*/
frs = kmalloc(sizeof(struct filter_resource), GFP_ATOMIC);
if (!frs)
return -ENOMEM;
/* Allocate an instance. */
rc = kfifo_get(efrm_filter_manager->free_ids,
(unsigned char *)&instance, sizeof(instance));
if (rc != sizeof(instance)) {
EFRM_TRACE("%s: out of instances", __FUNCTION__);
EFRM_ASSERT(rc == 0);
rc = -EBUSY;
goto fail1;
}
/* Initialise the resource DS. */
efrm_resource_init(&frs->rs, EFRM_RESOURCE_FILTER, instance);
frs->pt = vi_parent;
efrm_resource_ref(&frs->pt->rs);
frs->filter_idx = -1;
EFRM_TRACE("%s: " EFRM_RESOURCE_FMT " VI %d", __FUNCTION__,
EFRM_RESOURCE_PRI_ARG(frs->rs.rs_handle),
EFRM_RESOURCE_INSTANCE(vi_parent->rs.rs_handle));
efrm_client_add_resource(vi_parent->rs.rs_client, &frs->rs);
*frs_out = frs;
return 0;
fail1:
memset(frs, 0, sizeof(*frs));
kfree(frs);
return rc;
}
int
efrm_vf_resource_alloc(struct efrm_client *client,
struct efrm_vf *linked, int use_iommu,
struct efrm_vf **vf_out)
{
struct efrm_vf_nic_params *nic =
&efrm_vf_manager->nic[client->nic->index];
struct efrm_vf *vf;
int rc = 0;
struct efrm_pd_owner_ids *owner_ids;
if (nic->vf_count != nic->vfs_probed) {
EFRM_ERR("%s: not all VFs for NIC %d are discovered yet: "
"%d out of %d", __func__, client->nic->index,
nic->vfs_probed, nic->vf_count);
return -EBUSY;
}
spin_lock_bh(&efrm_vf_manager->rm.rm_lock);
if (list_empty(&nic->free_list)) {
spin_unlock_bh(&efrm_vf_manager->rm.rm_lock);
return rc == 0 ? -ENOBUFS : rc;
}
vf = list_entry(nic->free_list.next, struct efrm_vf, link);
list_del(&vf->link);
spin_unlock_bh(&efrm_vf_manager->rm.rm_lock);
rc = efrm_vf_alloc_init(vf, linked, use_iommu);
if (rc != 0) {
/* Scary warnings are already printed, just return */
/* Add to the tail of the list in hope another function
* is better. */
list_add_tail(&vf->link,
&efrm_vf_manager->nic[vf->nic_index].free_list);
return rc;
}
EFRM_ASSERT(vf);
EFRM_ASSERT(vf->irq_count);
EFRM_ASSERT(vf->vi_count);
rc = efrm_buddy_range_ctor(&vf->vi_instances, vf->vi_base,
vf->vi_base + vf->vi_count);
if (rc < 0) {
EFRM_ERR("NIC %d VF %d: efrm_buddy_range_ctor(%d, %d) failed",
client->nic->index, vf->pci_dev_fn,
vf->vi_base, vf->vi_base + vf->vi_count);
spin_lock_bh(&efrm_vf_manager->rm.rm_lock);
list_add(&vf->link,
&efrm_vf_manager->nic[vf->nic_index].free_list);
spin_unlock_bh(&efrm_vf_manager->rm.rm_lock);
return -ENOMEM;
}
EFRM_ASSERT(vf->rs.rs_ref_count == 0);
efrm_resource_init(&vf->rs, EFRM_RESOURCE_VF, vf->pci_dev_fn);
efrm_client_add_resource(client, &vf->rs);
owner_ids = efrm_pd_owner_ids_ctor(
/* On falcon owner_ids are global, so base this block on the
* base vi id to avoid overlap.
*/
client->nic->devtype.arch == EFHW_ARCH_EF10 ? 1 : vf->vi_base,
(1 << vf->vi_scale));
if (!owner_ids)
return -ENOMEM;
vf->owner_ids = owner_ids;
EFRM_TRACE("NIC %d VF %d allocated",
client->nic->index, vf->pci_dev_fn);
*vf_out = vf;
return 0;
}
int efrm_pd_alloc(struct efrm_pd **pd_out, struct efrm_client *client_opt,
struct efrm_vf *vf_opt, int flags)
{
struct efrm_pd *pd;
int rc, instance;
struct efrm_pd_owner_ids *owner_ids;
int orders_num = 0;
EFRM_ASSERT((client_opt != NULL) || (vf_opt != NULL));
if ((flags &
~(EFRM_PD_ALLOC_FLAG_PHYS_ADDR_MODE |
EFRM_PD_ALLOC_FLAG_HW_LOOPBACK)) != 0) {
rc = -EINVAL;
goto fail1;
}
if (!(flags & EFRM_PD_ALLOC_FLAG_PHYS_ADDR_MODE)) {
orders_num = efhw_nic_buffer_table_orders_num(
client_opt->nic);
EFRM_ASSERT(orders_num);
EFRM_ASSERT(efhw_nic_buffer_table_orders(
client_opt->nic)[0] == 0);
}
pd = kmalloc(sizeof(*pd) + orders_num * sizeof(pd->bt_managers[0]),
GFP_KERNEL);
if (pd == NULL) {
rc = -ENOMEM;
goto fail1;
}
pd->stack_id = 0;
spin_lock_bh(&pd_manager->rm.rm_lock);
instance = pd_manager->next_instance++;
if (flags & EFRM_PD_ALLOC_FLAG_PHYS_ADDR_MODE) {
pd->owner_id = OWNER_ID_PHYS_MODE;
}
else {
#ifdef CONFIG_SFC_RESOURCE_VF
if (vf_opt != NULL)
owner_ids = vf_opt->owner_ids;
else
#endif
owner_ids = efrm_nic_from_client(client_opt)->owner_ids;
EFRM_ASSERT(owner_ids != NULL);
pd->owner_id = efrm_pd_owner_id_alloc(owner_ids);
}
spin_unlock_bh(&pd_manager->rm.rm_lock);
if (pd->owner_id == OWNER_ID_ALLOC_FAIL) {
rc = -EBUSY;
goto fail2;
}
#ifdef CONFIG_SFC_RESOURCE_VF
pd->vf = vf_opt;
if (pd->vf != NULL) {
struct efrm_resource *vfrs = efrm_vf_to_resource(pd->vf);
efrm_resource_ref(vfrs);
client_opt = vfrs->rs_client;
}
#endif
if (!(flags & EFRM_PD_ALLOC_FLAG_PHYS_ADDR_MODE)) {
int ord;
for (ord = 0; ord < orders_num; ord++) {
efrm_bt_manager_ctor(
&pd->bt_managers[ord], pd->owner_id,
efhw_nic_buffer_table_orders(
client_opt->nic)[ord]
);
}
}
efrm_resource_init(&pd->rs, EFRM_RESOURCE_PD, instance);
efrm_client_add_resource(client_opt, &pd->rs);
pd->os_data = efrm_pd_os_stats_ctor(pd);
pd->min_nic_order = 0;
#if EFX_DRIVERLINK_API_VERSION < 25
pd->vport_id = EFRM_PD_VPORT_ID_NONE;
#else
pd->vport_handle = EFRM_PD_VPORT_ID_NONE;
#endif
mutex_init(&pd->remap_lock);
if (flags & EFRM_PD_ALLOC_FLAG_HW_LOOPBACK) {
if ((rc = efrm_pd_stack_id_alloc(pd)) != 0) {
efrm_pd_release(pd);
return rc;
}
}
*pd_out = pd;
return 0;
fail2:
kfree(pd);
fail1:
return rc;
}
