[PATCH] hvc_console: Separate hvc_console and vio code 2
Remove all the vio device driver code from hvc_console.c
This will allow us to separate hvsi, hvc, and allow hvc_console to be used
without the ppc64 vio layer.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
new file mode 100644
index 0000000..d2928f9
--- /dev/null
+++ b/drivers/char/hvc_vio.c
@@ -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);