|
|
@@ -0,0 +1,125 @@
|
|
|
+/*
|
|
|
+ * vio driver interface to hvc_console.c
|
|
|
+ *
|
|
|
+ * This code was moved here to allow the remaing code to be reused as a
|
|
|
+ * generic polling mode with semi-reliable transport driver core to the
|
|
|
+ * console and tty subsystems.
|
|
|
+ *
|
|
|
+ *
|
|
|
+ * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM
|
|
|
+ * Copyright (C) 2001 Paul Mackerras <paulus@au.ibm.com>, IBM
|
|
|
+ * Copyright (C) 2004 Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
|
|
|
+ * Copyright (C) 2004 IBM Corporation
|
|
|
+ *
|
|
|
+ * Additional Author(s):
|
|
|
+ * Ryan S. Arnold <rsa@us.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 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. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
+ */
|
|
|
+
|
|
|
+#include <linux/types.h>
|
|
|
+#include <linux/init.h>
|
|
|
+#include <asm/hvconsole.h>
|
|
|
+#include <asm/vio.h>
|
|
|
+#include <asm/prom.h>
|
|
|
+
|
|
|
+char hvc_driver_name[] = "hvc_console";
|
|
|
+
|
|
|
+static struct vio_device_id hvc_driver_table[] __devinitdata = {
|
|
|
+ {"serial", "hvterm1"},
|
|
|
+ { NULL, }
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(vio, hvc_driver_table);
|
|
|
+
|
|
|
+static int __devinit hvc_vio_probe(struct vio_dev *vdev,
|
|
|
+ const struct vio_device_id *id)
|
|
|
+{
|
|
|
+ struct hvc_struct *hp;
|
|
|
+
|
|
|
+ /* probed with invalid parameters. */
|
|
|
+ if (!vdev || !id)
|
|
|
+ return -EPERM;
|
|
|
+
|
|
|
+ hp = hvc_alloc(vdev->unit_address, vdev->irq);
|
|
|
+ if (IS_ERR(hp))
|
|
|
+ return PTR_ERR(hp);
|
|
|
+ dev_set_drvdata(&vdev->dev, hp);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int __devexit hvc_vio_remove(struct vio_dev *vdev)
|
|
|
+{
|
|
|
+ struct hvc_struct *hp = dev_get_drvdata(&vdev->dev);
|
|
|
+
|
|
|
+ return hvc_remove(hp);
|
|
|
+}
|
|
|
+
|
|
|
+static struct vio_driver hvc_vio_driver = {
|
|
|
+ .name = hvc_driver_name,
|
|
|
+ .id_table = hvc_driver_table,
|
|
|
+ .probe = hvc_vio_probe,
|
|
|
+ .remove = hvc_vio_remove,
|
|
|
+ .driver = {
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+static int hvc_vio_init(void)
|
|
|
+{
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ /* Register as a vio device to receive callbacks */
|
|
|
+ rc = vio_register_driver(&hvc_vio_driver);
|
|
|
+
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+module_init(hvc_vio_init); /* after drivers/char/hvc_console.c */
|
|
|
+
|
|
|
+static void hvc_vio_exit(void)
|
|
|
+{
|
|
|
+ vio_unregister_driver(&hvc_vio_driver);
|
|
|
+}
|
|
|
+module_exit(hvc_vio_exit);
|
|
|
+
|
|
|
+/* the device tree order defines our numbering */
|
|
|
+static int hvc_find_vtys(void)
|
|
|
+{
|
|
|
+ struct device_node *vty;
|
|
|
+ int num_found = 0;
|
|
|
+
|
|
|
+ for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL;
|
|
|
+ vty = of_find_node_by_name(vty, "vty")) {
|
|
|
+ uint32_t *vtermno;
|
|
|
+
|
|
|
+ /* We have statically defined space for only a certain number
|
|
|
+ * of console adapters.
|
|
|
+ */
|
|
|
+ if (num_found >= MAX_NR_HVC_CONSOLES)
|
|
|
+ break;
|
|
|
+
|
|
|
+ vtermno = (uint32_t *)get_property(vty, "reg", NULL);
|
|
|
+ if (!vtermno)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ if (device_is_compatible(vty, "hvterm1")) {
|
|
|
+ hvc_instantiate(*vtermno, num_found);
|
|
|
+ ++num_found;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return num_found;
|
|
|
+}
|
|
|
+console_initcall(hvc_find_vtys);
|
Milton Miller