Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
new file mode 100644
index 0000000..ff2cbf0
--- /dev/null
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -0,0 +1,267 @@
+/*
+ * 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 <asm/rtas.h>
+#include "rpaphp.h"
+
+static ssize_t removable_read_file (struct hotplug_slot *php_slot, char *buf)
+{
+ u8 value;
+ int retval = -ENOENT;
+ struct slot *slot = (struct slot *)php_slot->private;
+
+ if (!slot)
+ return retval;
+
+ value = slot->removable;
+ retval = sprintf (buf, "%d\n", value);
+ return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_removable = {
+ .attr = {.name = "phy_removable", .mode = S_IFREG | S_IRUGO},
+ .show = removable_read_file,
+};
+
+static void rpaphp_sysfs_add_attr_removable (struct hotplug_slot *slot)
+{
+ sysfs_create_file(&slot->kobj, &hotplug_slot_attr_removable.attr);
+}
+
+static void rpaphp_sysfs_remove_attr_removable (struct hotplug_slot *slot)
+{
+ sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_removable.attr);
+}
+
+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);
+
+ /* remove "phy_removable" file */
+ rpaphp_sysfs_remove_attr_removable(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);
+
+ /* create "phy_removable" file */
+ rpaphp_sysfs_add_attr_removable(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);
+
+ if (slot->dev_type == VIO_DEV)
+ info("Slot [%s](VIO location=%s) registered\n",
+ slot->name, slot->location);
+ else
+ 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;
+
+ if (slot->type == HOTPLUG) {
+ rc = rtas_get_power_level(slot->power_domain, &level);
+ if (!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;
+ } else
+ err("failed to get power-level for slot(%s), rc=0x%x\n",
+ slot->location, rc);
+ } else {
+ dbg("%s report POWER_ON for EMBEDDED or PHB slot %s\n",
+ __FUNCTION__, slot->location);
+ *value = (u8) POWER_ON;
+ }
+
+ 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;
+}