/*
* Scan the IBFT table structure for the NIC and Target fields. When
* found add them on the passed-in list. We do not support the other
* fields at this point, so they are skipped.
*/
static int __init ibft_register_kobjects(struct ibft_table_header *header,
struct list_head *list)
{
struct ibft_control *control = NULL;
void *ptr, *end;
int rc = 0;
u16 offset;
u16 eot_offset;
control = (void *)header + sizeof(*header);
end = (void *)control + control->hdr.length;
eot_offset = (void *)header + header->length - (void *)control;
rc = ibft_verify_hdr("control", (struct ibft_hdr *)control, id_control,
sizeof(*control));
/* iBFT table safety checking */
rc |= ((control->hdr.index) ? -ENODEV : 0);
if (rc) {
printk(KERN_ERR "iBFT error: Control header is invalid!\n");
return rc;
}
for (ptr = &control->initiator_off; ptr < end; ptr += sizeof(u16)) {
offset = *(u16 *)ptr;
if (offset && offset < header->length && offset < eot_offset) {
rc = ibft_create_kobject(header,
(void *)header + offset,
list);
if (rc)
break;
}
}
return rc;
}
/*
* Helper function for ibft_register_kobjects.
*/
static int __init ibft_create_kobject(struct acpi_table_ibft *header,
struct ibft_hdr *hdr)
{
struct iscsi_boot_kobj *boot_kobj = NULL;
struct ibft_kobject *ibft_kobj = NULL;
struct ibft_nic *nic = (struct ibft_nic *)hdr;
struct pci_dev *pci_dev;
int rc = 0;
ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL);
if (!ibft_kobj)
return -ENOMEM;
ibft_kobj->header = header;
ibft_kobj->hdr = hdr;
switch (hdr->id) {
case id_initiator:
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
sizeof(*ibft_kobj->initiator));
if (rc)
break;
boot_kobj = iscsi_boot_create_initiator(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_initiator,
ibft_check_initiator_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_nic:
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
sizeof(*ibft_kobj->nic));
if (rc)
break;
boot_kobj = iscsi_boot_create_ethernet(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_nic,
ibft_check_nic_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_target:
rc = ibft_verify_hdr("target", hdr, id_target,
sizeof(*ibft_kobj->tgt));
if (rc)
break;
boot_kobj = iscsi_boot_create_target(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_target,
ibft_check_tgt_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_reserved:
case id_control:
case id_extensions:
/* Fields which we don't support. Ignore them */
rc = 1;
break;
default:
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
"Report this bug to %.6s!\n", hdr->id,
header->header.oem_id);
rc = 1;
break;
}
if (rc) {
/* Skip adding this kobject, but exit with non-fatal error. */
rc = 0;
goto free_ibft_obj;
}
if (hdr->id == id_nic) {
/*
* We don't search for the device in other domains than
* zero. This is because on x86 platforms the BIOS
* executes only devices which are in domain 0. Furthermore, the
* iBFT spec doesn't have a domain id field :-(
*/
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
(nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&boot_kobj->kobj,
&pci_dev->dev.kobj, "device");
pci_dev_put(pci_dev);
}
}
static int __init ibft_create_kobject(struct acpi_table_ibft *header,
struct ibft_hdr *hdr)
{
struct iscsi_boot_kobj *boot_kobj = NULL;
struct ibft_kobject *ibft_kobj = NULL;
struct ibft_nic *nic = (struct ibft_nic *)hdr;
struct pci_dev *pci_dev;
int rc = 0;
ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL);
if (!ibft_kobj)
return -ENOMEM;
ibft_kobj->header = header;
ibft_kobj->hdr = hdr;
switch (hdr->id) {
case id_initiator:
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
sizeof(*ibft_kobj->initiator));
if (rc)
break;
boot_kobj = iscsi_boot_create_initiator(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_initiator,
ibft_check_initiator_for,
ibft_kobj_release);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_nic:
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
sizeof(*ibft_kobj->nic));
if (rc)
break;
boot_kobj = iscsi_boot_create_ethernet(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_nic,
ibft_check_nic_for,
ibft_kobj_release);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_target:
rc = ibft_verify_hdr("target", hdr, id_target,
sizeof(*ibft_kobj->tgt));
if (rc)
break;
boot_kobj = iscsi_boot_create_target(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_target,
ibft_check_tgt_for,
ibft_kobj_release);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_reserved:
case id_control:
case id_extensions:
/* */
rc = 1;
break;
default:
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
"Report this bug to %.6s!\n", hdr->id,
header->header.oem_id);
rc = 1;
break;
}
if (rc) {
/* */
rc = 0;
goto free_ibft_obj;
}
if (hdr->id == id_nic) {
/*
*/
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
(nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&boot_kobj->kobj,
&pci_dev->dev.kobj, "device");
pci_dev_put(pci_dev);
}
}
/*
* Helper function for ibft_register_kobjects.
*/
static int __init ibft_create_kobject(struct ibft_table_header *header,
struct ibft_hdr *hdr,
struct list_head *list)
{
struct ibft_kobject *ibft_kobj = NULL;
struct ibft_nic *nic = (struct ibft_nic *)hdr;
struct pci_dev *pci_dev;
int rc = 0;
ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL);
if (!ibft_kobj)
return -ENOMEM;
ibft_kobj->header = header;
ibft_kobj->hdr = hdr;
switch (hdr->id) {
case id_initiator:
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
sizeof(*ibft_kobj->initiator));
break;
case id_nic:
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
sizeof(*ibft_kobj->nic));
break;
case id_target:
rc = ibft_verify_hdr("target", hdr, id_target,
sizeof(*ibft_kobj->tgt));
break;
case id_reserved:
case id_control:
case id_extensions:
/* Fields which we don't support. Ignore them */
rc = 1;
break;
default:
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
"Report this bug to %.6s!\n", hdr->id,
header->oem_id);
rc = 1;
break;
}
if (rc) {
/* Skip adding this kobject, but exit with non-fatal error. */
kfree(ibft_kobj);
goto out_invalid_struct;
}
ibft_kobj->kobj.kset = ibft_kset;
rc = kobject_init_and_add(&ibft_kobj->kobj, &ibft_ktype,
NULL, ibft_id_names[hdr->id], hdr->index);
if (rc) {
kfree(ibft_kobj);
goto out;
}
kobject_uevent(&ibft_kobj->kobj, KOBJ_ADD);
if (hdr->id == id_nic) {
/*
* We don't search for the device in other domains than
* zero. This is because on x86 platforms the BIOS
* executes only devices which are in domain 0. Furthermore, the
* iBFT spec doesn't have a domain id field :-(
*/
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
(nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&ibft_kobj->kobj,
&pci_dev->dev.kobj, "device");
pci_dev_put(pci_dev);
}
}
/*
* Helper function for ibft_register_kobjects.
*/
static int __init ibft_create_kobject(struct ibft_table_header *header,
struct ibft_hdr *hdr,
struct list_head *list)
{
struct ibft_kobject *ibft_kobj = NULL;
struct ibft_nic *nic = (struct ibft_nic *)hdr;
struct pci_dev *pci_dev;
int rc = 0;
ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL);
if (!ibft_kobj)
return -ENOMEM;
ibft_kobj->header = header;
ibft_kobj->hdr = hdr;
switch (hdr->id) {
case id_initiator:
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
sizeof(*ibft_kobj->initiator));
break;
case id_nic:
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
sizeof(*ibft_kobj->nic));
break;
case id_target:
rc = ibft_verify_hdr("target", hdr, id_target,
sizeof(*ibft_kobj->tgt));
break;
case id_reserved:
case id_control:
case id_extensions:
/* Fields which we don't support. Ignore them */
rc = 1;
break;
default:
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
"Report this bug to your vendor!\n", hdr->id);
rc = 1;
break;
}
if (rc) {
kfree(ibft_kobj);
goto out_invalid_struct;
}
/* kobject fief. We will let the reference counter do the job
of deleting its name if we fail here. */
kobj_set_kset_s(ibft_kobj, ibft_subsys);
ibft_kobj->kobj.ktype = &ibft_ktype;
rc = kobject_set_name(&ibft_kobj->kobj,
ibft_id_names[hdr->id],
hdr->index);
if (rc)
goto kobject_do_put;
rc = kobject_register(&ibft_kobj->kobj);
if (rc)
goto kobject_do_put;
if (hdr->id == id_nic) {
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
(nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&ibft_kobj->kobj,
&pci_dev->dev.kobj, "device");
pci_dev_put(pci_dev);
}
}
