Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linda Xie |
325 |
69.00% |
3 |
13.04% |
| Tyrel Datwyler |
41 |
8.70% |
1 |
4.35% |
| Linas Vepstas |
35 |
7.43% |
5 |
21.74% |
| Alexander Chiang |
29 |
6.16% |
3 |
13.04% |
| Rolf Eike Beer |
18 |
3.82% |
2 |
8.70% |
| Tim Schmielau |
6 |
1.27% |
1 |
4.35% |
| Lukas Wunner |
5 |
1.06% |
2 |
8.70% |
| David Gibson |
3 |
0.64% |
1 |
4.35% |
| Harvey Harrison |
3 |
0.64% |
1 |
4.35% |
| Björn Helgaas |
2 |
0.42% |
1 |
4.35% |
| Paul Mackerras |
2 |
0.42% |
1 |
4.35% |
| Eric Sesterhenn / Snakebyte |
1 |
0.21% |
1 |
4.35% |
| Rob Herring |
1 |
0.21% |
1 |
4.35% |
| Total |
471 |
|
23 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* RPA Virtual I/O device functions
* Copyright (C) 2004 Linda Xie <lxie@us.ibm.com>
*
* All rights reserved.
*
* Send feedback to <lxie@us.ibm.com>
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sysfs.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <asm/rtas.h>
#include "rpaphp.h"
/* free up the memory used by a slot */
void dealloc_slot_struct(struct slot *slot)
{
kfree(slot->name);
kfree(slot);
}
struct slot *alloc_slot_struct(struct device_node *dn,
int drc_index, char *drc_name, int power_domain)
{
struct slot *slot;
slot = kzalloc(sizeof(struct slot), GFP_KERNEL);
if (!slot)
goto error_nomem;
slot->name = kstrdup(drc_name, GFP_KERNEL);
if (!slot->name)
goto error_slot;
slot->dn = dn;
slot->index = drc_index;
slot->power_domain = power_domain;
slot->hotplug_slot.ops = &rpaphp_hotplug_slot_ops;
return (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 rpaphp_deregister_slot(struct slot *slot)
{
int retval = 0;
struct hotplug_slot *php_slot = &slot->hotplug_slot;
dbg("%s - Entry: deregistering slot=%s\n",
__func__, slot->name);
list_del(&slot->rpaphp_slot_list);
pci_hp_deregister(php_slot);
dealloc_slot_struct(slot);
dbg("%s - Exit: rc[%d]\n", __func__, retval);
return retval;
}
EXPORT_SYMBOL_GPL(rpaphp_deregister_slot);
int rpaphp_register_slot(struct slot *slot)
{
struct hotplug_slot *php_slot = &slot->hotplug_slot;
struct device_node *child;
u32 my_index;
int retval;
int slotno = -1;
dbg("%s registering slot:path[%pOF] index[%x], name[%s] pdomain[%x] type[%d]\n",
__func__, slot->dn, slot->index, slot->name,
slot->power_domain, slot->type);
/* should not try to register the same slot twice */
if (is_registered(slot)) {
err("rpaphp_register_slot: slot[%s] is already registered\n", slot->name);
return -EAGAIN;
}
for_each_child_of_node(slot->dn, child) {
retval = of_property_read_u32(child, "ibm,my-drc-index", &my_index);
if (my_index == slot->index) {
slotno = PCI_SLOT(PCI_DN(child)->devfn);
of_node_put(child);
break;
}
}
retval = pci_hp_register(php_slot, slot->bus, slotno, slot->name);
if (retval) {
err("pci_hp_register failed with error %d\n", retval);
return retval;
}
/* add slot to our internal list */
list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
info("Slot [%s] registered\n", slot->name);
return 0;
}