2 * RPA Virtual I/O device functions
3 * Copyright (C) 2004 Linda Xie <lxie@us.ibm.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or (at
10 * your option) any later version.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
15 * NON INFRINGEMENT. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * Send feedback to <lxie@us.ibm.com>
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/kobject.h>
28 #include <linux/sysfs.h>
29 #include <linux/pci.h>
32 static ssize_t location_read_file (struct hotplug_slot *php_slot, char *buf)
36 struct slot *slot = (struct slot *)php_slot->private;
41 value = slot->location;
42 retval = sprintf (buf, "%s\n", value);
46 static struct hotplug_slot_attribute hotplug_slot_attr_location = {
47 .attr = {.name = "phy_location", .mode = S_IFREG | S_IRUGO},
48 .show = location_read_file,
51 static void rpaphp_sysfs_add_attr_location (struct hotplug_slot *slot)
53 sysfs_create_file(&slot->kobj, &hotplug_slot_attr_location.attr);
56 void rpaphp_sysfs_remove_attr_location (struct hotplug_slot *slot)
58 sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_location.attr);
61 /* free up the memory user by a slot */
62 static void rpaphp_release_slot(struct hotplug_slot *hotplug_slot)
64 struct slot *slot = hotplug_slot? (struct slot *) hotplug_slot->private:NULL;
69 dealloc_slot_struct(slot);
72 void dealloc_slot_struct(struct slot *slot)
74 kfree(slot->hotplug_slot->info);
75 kfree(slot->hotplug_slot->name);
76 kfree(slot->hotplug_slot);
81 struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name,
86 dbg("Enter alloc_slot_struct(): dn->full_name=%s drc_index=0x%x drc_name=%s\n",
87 dn->full_name, drc_index, drc_name);
89 slot = kmalloc(sizeof (struct slot), GFP_KERNEL);
92 memset(slot, 0, sizeof (struct slot));
93 slot->hotplug_slot = kmalloc(sizeof (struct hotplug_slot), GFP_KERNEL);
94 if (!slot->hotplug_slot) {
98 memset(slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
99 slot->hotplug_slot->info = kmalloc(sizeof (struct hotplug_slot_info),
101 if (!slot->hotplug_slot->info) {
102 kfree(slot->hotplug_slot);
106 memset(slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
107 slot->hotplug_slot->name = kmalloc(BUS_ID_SIZE + 1, GFP_KERNEL);
108 if (!slot->hotplug_slot->name) {
109 kfree(slot->hotplug_slot->info);
110 kfree(slot->hotplug_slot);
114 slot->location = kmalloc(strlen(drc_name) + 1, GFP_KERNEL);
115 if (!slot->location) {
116 kfree(slot->hotplug_slot->info);
117 kfree(slot->hotplug_slot->name);
118 kfree(slot->hotplug_slot);
122 slot->name = slot->hotplug_slot->name;
124 slot->index = drc_index;
125 strcpy(slot->location, drc_name);
126 slot->power_domain = power_domain;
127 slot->magic = SLOT_MAGIC;
128 slot->hotplug_slot->private = slot;
129 slot->hotplug_slot->ops = &rpaphp_hotplug_slot_ops;
130 slot->hotplug_slot->release = &rpaphp_release_slot;
131 dbg("Exit alloc_slot_struct(): slot->dn->full_name=%s drc_index=0x%x drc_name=%s\n",
132 slot->dn->full_name, slot->index, slot->name);
136 int register_slot(struct slot *slot)
139 char *vio_uni_addr = NULL;
141 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);
143 retval = pci_hp_register(slot->hotplug_slot);
145 err("pci_hp_register failed with error %d\n", retval);
146 rpaphp_release_slot(slot->hotplug_slot);
150 /* create "phy_locatoin" file */
151 rpaphp_sysfs_add_attr_location(slot->hotplug_slot);
153 /* add slot to our internal list */
154 dbg("%s adding slot[%s] to rpaphp_slot_list\n",
155 __FUNCTION__, slot->name);
157 list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
160 info("Slot [%s](vio_uni_addr=%s) registered\n",
161 slot->name, vio_uni_addr);
163 info("Slot [%s](bus_id=%s) registered\n",
164 slot->name, pci_name(slot->bridge));
169 int rpaphp_get_power_status(struct slot *slot, u8 * value)
173 rc = rtas_get_power_level(slot->power_domain, (int *) value);
175 err("failed to get power-level for slot(%s), rc=0x%x\n",
181 int rpaphp_set_attention_status(struct slot *slot, u8 status)
185 /* status: LED_OFF or LED_ON */
186 rc = rtas_set_indicator(DR_INDICATOR, slot->index, status);
188 err("slot(%s) set attention-status(%d) failed! rc=0x%x\n",
189 slot->name, status, rc);