kernel-ark/drivers/pci/hotplug/rpaphp_slot.c
Tim Schmielau 4e57b68178 [PATCH] fix missing includes
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00

227 lines
6.0 KiB
C

/*
* RPA 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 <linux/kernel.h>
#include <linux/module.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <asm/rtas.h>
#include "rpaphp.h"
static ssize_t location_read_file (struct hotplug_slot *php_slot, char *buf)
{
char *value;
int retval = -ENOENT;
struct slot *slot = (struct slot *)php_slot->private;
if (!slot)
return retval;
value = slot->location;
retval = sprintf (buf, "%s\n", value);
return retval;
}
static struct hotplug_slot_attribute hotplug_slot_attr_location = {
.attr = {.name = "phy_location", .mode = S_IFREG | S_IRUGO},
.show = location_read_file,
};
static void rpaphp_sysfs_add_attr_location (struct hotplug_slot *slot)
{
sysfs_create_file(&slot->kobj, &hotplug_slot_attr_location.attr);
}
static void rpaphp_sysfs_remove_attr_location (struct hotplug_slot *slot)
{
sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_location.attr);
}
/* free up the memory used by a slot */
static void rpaphp_release_slot(struct hotplug_slot *hotplug_slot)
{
struct slot *slot = (struct slot *) hotplug_slot->private;
dealloc_slot_struct(slot);
}
void dealloc_slot_struct(struct slot *slot)
{
kfree(slot->hotplug_slot->info);
kfree(slot->hotplug_slot->name);
kfree(slot->hotplug_slot);
kfree(slot);
return;
}
struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name,
int power_domain)
{
struct slot *slot;
slot = kmalloc(sizeof (struct slot), GFP_KERNEL);
if (!slot)
goto error_nomem;
memset(slot, 0, sizeof (struct slot));
slot->hotplug_slot = kmalloc(sizeof (struct hotplug_slot), GFP_KERNEL);
if (!slot->hotplug_slot)
goto error_slot;
memset(slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
slot->hotplug_slot->info = kmalloc(sizeof (struct hotplug_slot_info),
GFP_KERNEL);
if (!slot->hotplug_slot->info)
goto error_hpslot;
memset(slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
slot->hotplug_slot->name = kmalloc(BUS_ID_SIZE + 1, GFP_KERNEL);
if (!slot->hotplug_slot->name)
goto error_info;
slot->location = kmalloc(strlen(drc_name) + 1, GFP_KERNEL);
if (!slot->location)
goto error_name;
slot->name = slot->hotplug_slot->name;
slot->dn = dn;
slot->index = drc_index;
strcpy(slot->location, drc_name);
slot->power_domain = power_domain;
slot->hotplug_slot->private = slot;
slot->hotplug_slot->ops = &rpaphp_hotplug_slot_ops;
slot->hotplug_slot->release = &rpaphp_release_slot;
return (slot);
error_name:
kfree(slot->hotplug_slot->name);
error_info:
kfree(slot->hotplug_slot->info);
error_hpslot:
kfree(slot->hotplug_slot);
error_slot:
kfree(slot);
error_nomem:
return NULL;
}
static int is_registered(struct slot *slot)
{
struct slot *tmp_slot;
list_for_each_entry(tmp_slot, &rpaphp_slot_head, rpaphp_slot_list) {
if (!strcmp(tmp_slot->name, slot->name))
return 1;
}
return 0;
}
int deregister_slot(struct slot *slot)
{
int retval = 0;
struct hotplug_slot *php_slot = slot->hotplug_slot;
dbg("%s - Entry: deregistering slot=%s\n",
__FUNCTION__, slot->name);
list_del(&slot->rpaphp_slot_list);
/* remove "phy_location" file */
rpaphp_sysfs_remove_attr_location(php_slot);
retval = pci_hp_deregister(php_slot);
if (retval)
err("Problem unregistering a slot %s\n", slot->name);
else
num_slots--;
dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
return retval;
}
int register_slot(struct slot *slot)
{
int retval;
dbg("%s registering slot:path[%s] index[%x], name[%s] pdomain[%x] type[%d]\n",
__FUNCTION__, slot->dn->full_name, slot->index, slot->name,
slot->power_domain, slot->type);
/* should not try to register the same slot twice */
if (is_registered(slot)) { /* should't be here */
err("register_slot: slot[%s] is already registered\n", slot->name);
rpaphp_release_slot(slot->hotplug_slot);
return -EAGAIN;
}
retval = pci_hp_register(slot->hotplug_slot);
if (retval) {
err("pci_hp_register failed with error %d\n", retval);
rpaphp_release_slot(slot->hotplug_slot);
return retval;
}
/* create "phy_locatoin" file */
rpaphp_sysfs_add_attr_location(slot->hotplug_slot);
/* add slot to our internal list */
dbg("%s adding slot[%s] to rpaphp_slot_list\n",
__FUNCTION__, slot->name);
list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
info("Slot [%s](PCI location=%s) registered\n", slot->name,
slot->location);
num_slots++;
return 0;
}
int rpaphp_get_power_status(struct slot *slot, u8 * value)
{
int rc = 0, level;
rc = rtas_get_power_level(slot->power_domain, &level);
if (rc < 0) {
err("failed to get power-level for slot(%s), rc=0x%x\n",
slot->location, rc);
return rc;
}
dbg("%s the power level of slot %s(pwd-domain:0x%x) is %d\n",
__FUNCTION__, slot->name, slot->power_domain, level);
*value = level;
return rc;
}
int rpaphp_set_attention_status(struct slot *slot, u8 status)
{
int rc;
/* status: LED_OFF or LED_ON */
rc = rtas_set_indicator(DR_INDICATOR, slot->index, status);
if (rc < 0)
err("slot(name=%s location=%s index=0x%x) set attention-status(%d) failed! rc=0x%x\n",
slot->name, slot->location, slot->index, status, rc);
return rc;
}