/*
* RPA Hot Plug Virtual I/O device functions
* Copyright (C) 2004 Linda Xie <lxie@us.ibm.com>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Send feedback to <lxie@us.ibm.com>
*
*/
#include <asm/vio.h>
#include "rpaphp.h"
/*
* get_vio_adapter_status - get the status of a slot
*
* status:
*
* 1-- adapter is configured
* 2-- adapter is not configured
* 3-- not valid
*/
inline int rpaphp_get_vio_adapter_status(struct slot *slot, int is_init, u8 *value)
{
*value = slot->state;
return 0;
}
int rpaphp_unconfig_vio_adapter(struct slot *slot)
{
int retval = 0;
dbg("Entry %s: slot[%s]\n", __FUNCTION__, slot->name);
if (!slot->dev.vio_dev) {
info("%s: no VIOA in slot[%s]\n", __FUNCTION__, slot->name);
retval = -EINVAL;
goto exit;
}
/* remove the device from the vio core */
vio_unregister_device(slot->dev.vio_dev);
slot->state = NOT_CONFIGURED;
info("%s: adapter in slot[%s] unconfigured.\n", __FUNCTION__, slot->name);
exit:
dbg("Exit %s, rc=0x%x\n", __FUNCTION__, retval);
return retval;
}
static int setup_vio_hotplug_slot_info(struct slot *slot)
{
slot->hotplug_slot->info->power_status = 1;
rpaphp_get_vio_adapter_status(slot, 1,
&slot->hotplug_slot->info->adapter_status);
return 0;
}
int register_vio_slot(struct device_node *dn)
{
u32 *index;
char *name;
int rc = -EINVAL;
struct slot *slot = NULL;
rc = rpaphp_get_drc_props(dn, NULL, &name, NULL, NULL);
if (rc < 0)
goto exit_rc;
index = (u32 *) get_property(dn, "ibm,my-drc-index", NULL);
if (!index)
goto exit_rc;
if (!(slot = alloc_slot_struct(dn, *index, name, 0))) {
rc = -ENOMEM;
goto exit_rc;
}
slot->dev_type = VIO_DEV;
slot->dev.vio_dev = vio_find_node(dn);
if (slot->dev.vio_dev) {
/*
* rpaphp is the only owner of vio devices and
* does not need extra reference taken by
* vio_find_node
*/
put_device(&slot->dev.vio_dev->dev);
} else
slot->dev.vio_dev = vio_register_device_node(dn);
if (slot->dev.vio_dev)
slot->state = CONFIGURED;
else
slot->state = NOT_CONFIGURED;
if (setup_vio_hotplug_slot_info(slot))
goto exit_rc;
strcpy(slot->name, slot->dev.vio_dev->dev.bus_id);
info("%s: registered VIO device[name=%s vio_dev=%p]\n",
__FUNCTION__, slot->name, slot->dev.vio_dev);
rc = register_slot(slot);
exit_rc:
if (rc && slot)
dealloc_slot_struct(slot);
return (rc);
}
int rpaphp_enable_vio_slot(struct slot *slot)
{
int retval = 0;
if ((slot->dev.vio_dev = vio_register_device_node(slot->dn))) {
info("%s: VIO adapter %s in slot[%s] has been configured\n",
__FUNCTION__, slot->dn->name, slot->name);
slot->state = CONFIGURED;
} else {
info("%s: no vio_dev struct for adapter in slot[%s]\n",
__FUNCTION__, slot->name);
slot->state = NOT_CONFIGURED;
}
return retval;
}
