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yaml --- r: 4231 b: refs/heads/master c: acad955 h: refs/heads/master i: 4229: ed31919 4227: ac13c87 4223: 15d672f v: v3
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Milton Miller
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Linus Torvalds
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Jul 8, 2005
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: d5ee257c3342185ba8ab642d125d192eb99ea8f2 | ||
| refs/heads/master: acad9559f1054487292eb10d7bb81f256e9d8f2d |
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| Original file line number | Diff line number | Diff line change |
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| @@ -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); |
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