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/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
new file mode 100644
index 0000000..a3d2858
--- /dev/null
+++ b/drivers/s390/net/smsgiucv.c
@@ -0,0 +1,180 @@
+/*
+ * IUCV special message driver
+ *
+ * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ *
+ * 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, 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. 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <asm/cpcmd.h>
+#include <asm/ebcdic.h>
+
+#include "iucv.h"
+
+struct smsg_callback {
+ struct list_head list;
+ char *prefix;
+ int len;
+ void (*callback)(char *str);
+};
+
+MODULE_AUTHOR
+ ("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)");
+MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
+
+static iucv_handle_t smsg_handle;
+static unsigned short smsg_pathid;
+static DEFINE_SPINLOCK(smsg_list_lock);
+static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
+
+static void
+smsg_connection_complete(iucv_ConnectionComplete *eib, void *pgm_data)
+{
+}
+
+
+static void
+smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
+{
+ struct smsg_callback *cb;
+ unsigned char *msg;
+ unsigned short len;
+ int rc;
+
+ len = eib->ln1msg2.ipbfln1f;
+ msg = kmalloc(len + 1, GFP_ATOMIC|GFP_DMA);
+ if (!msg) {
+ iucv_reject(eib->ippathid, eib->ipmsgid, eib->iptrgcls);
+ return;
+ }
+ rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls,
+ msg, len, 0, 0, 0);
+ if (rc == 0) {
+ msg[len] = 0;
+ EBCASC(msg, len);
+ spin_lock(&smsg_list_lock);
+ list_for_each_entry(cb, &smsg_list, list)
+ if (strncmp(msg + 8, cb->prefix, cb->len) == 0) {
+ cb->callback(msg + 8);
+ break;
+ }
+ spin_unlock(&smsg_list_lock);
+ }
+ kfree(msg);
+}
+
+static iucv_interrupt_ops_t smsg_ops = {
+ .ConnectionComplete = smsg_connection_complete,
+ .MessagePending = smsg_message_pending,
+};
+
+static struct device_driver smsg_driver = {
+ .name = "SMSGIUCV",
+ .bus = &iucv_bus,
+};
+
+int
+smsg_register_callback(char *prefix, void (*callback)(char *str))
+{
+ struct smsg_callback *cb;
+
+ cb = kmalloc(sizeof(struct smsg_callback), GFP_KERNEL);
+ if (!cb)
+ return -ENOMEM;
+ cb->prefix = prefix;
+ cb->len = strlen(prefix);
+ cb->callback = callback;
+ spin_lock(&smsg_list_lock);
+ list_add_tail(&cb->list, &smsg_list);
+ spin_unlock(&smsg_list_lock);
+ return 0;
+}
+
+void
+smsg_unregister_callback(char *prefix, void (*callback)(char *str))
+{
+ struct smsg_callback *cb, *tmp;
+
+ spin_lock(&smsg_list_lock);
+ cb = 0;
+ list_for_each_entry(tmp, &smsg_list, list)
+ if (tmp->callback == callback &&
+ strcmp(tmp->prefix, prefix) == 0) {
+ cb = tmp;
+ list_del(&cb->list);
+ break;
+ }
+ spin_unlock(&smsg_list_lock);
+ kfree(cb);
+}
+
+static void __exit
+smsg_exit(void)
+{
+ if (smsg_handle > 0) {
+ cpcmd("SET SMSG OFF", 0, 0);
+ iucv_sever(smsg_pathid, 0);
+ iucv_unregister_program(smsg_handle);
+ driver_unregister(&smsg_driver);
+ }
+ return;
+}
+
+static int __init
+smsg_init(void)
+{
+ static unsigned char pgmmask[24] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ };
+ int rc;
+
+ rc = driver_register(&smsg_driver);
+ if (rc != 0) {
+ printk(KERN_ERR "SMSGIUCV: failed to register driver.\n");
+ return rc;
+ }
+ smsg_handle = iucv_register_program("SMSGIUCV ", "*MSG ",
+ pgmmask, &smsg_ops, 0);
+ if (!smsg_handle) {
+ printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
+ driver_unregister(&smsg_driver);
+ return -EIO; /* better errno ? */
+ }
+ rc = iucv_connect (&smsg_pathid, 1, 0, "*MSG ", 0, 0, 0, 0,
+ smsg_handle, 0);
+ if (rc) {
+ printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
+ iucv_unregister_program(smsg_handle);
+ driver_unregister(&smsg_driver);
+ smsg_handle = 0;
+ return -EIO;
+ }
+ cpcmd("SET SMSG IUCV", 0, 0);
+ return 0;
+}
+
+module_init(smsg_init);
+module_exit(smsg_exit);
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(smsg_register_callback);
+EXPORT_SYMBOL(smsg_unregister_callback);