diff options
Diffstat (limited to 'drivers/char/hvc_vio.c')
| -rw-r--r-- | drivers/char/hvc_vio.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c deleted file mode 100644 index 5e2f52b3332..00000000000 --- a/drivers/char/hvc_vio.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * 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> -#include <asm/firmware.h> - -#include "hvc_console.h" - -static const char hvc_driver_name[] = "hvc_console"; - -static struct vio_device_id hvc_driver_table[] __devinitdata = { - {"serial", "hvterm1"}, - { "", "" } -}; -MODULE_DEVICE_TABLE(vio, hvc_driver_table); - -static int filtered_get_chars(uint32_t vtermno, char *buf, int count) -{ - unsigned long got; - int i; - - /* - * Vio firmware will read up to SIZE_VIO_GET_CHARS at its own discretion - * so we play safe and avoid the situation where got > count which could - * overload the flip buffer. - */ - if (count < SIZE_VIO_GET_CHARS) - return -EAGAIN; - - got = hvc_get_chars(vtermno, buf, count); - - /* - * Work around a HV bug where it gives us a null - * after every \r. -- paulus - */ - for (i = 1; i < got; ++i) { - if (buf[i] == 0 && buf[i-1] == '\r') { - --got; - if (i < got) - memmove(&buf[i], &buf[i+1], - got - i); - } - } - return got; -} - -static const struct hv_ops hvc_get_put_ops = { - .get_chars = filtered_get_chars, - .put_chars = hvc_put_chars, - .notifier_add = notifier_add_irq, - .notifier_del = notifier_del_irq, - .notifier_hangup = notifier_hangup_irq, -}; - -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, &hvc_get_put_ops, - MAX_VIO_PUT_CHARS); - 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 = { - .id_table = hvc_driver_table, - .probe = hvc_vio_probe, - .remove = __devexit_p(hvc_vio_remove), - .driver = { - .name = hvc_driver_name, - .owner = THIS_MODULE, - } -}; - -static int __init hvc_vio_init(void) -{ - int rc; - - if (firmware_has_feature(FW_FEATURE_ISERIES)) - return -EIO; - - /* 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 __exit 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")) { - const uint32_t *vtermno; - - /* We have statically defined space for only a certain number - * of console adapters. - */ - if (num_found >= MAX_NR_HVC_CONSOLES) { - of_node_put(vty); - break; - } - - vtermno = of_get_property(vty, "reg", NULL); - if (!vtermno) - continue; - - if (of_device_is_compatible(vty, "hvterm1")) { - hvc_instantiate(*vtermno, num_found, &hvc_get_put_ops); - ++num_found; - } - } - - return num_found; -} -console_initcall(hvc_find_vtys); |