1/*
2 *	Serial Device Initialisation for Lasi/Asp/Wax/Dino
3 *
4 *	(c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002
5 *
6 *	This program is free software; you can redistribute it and/or modify
7 *	it under the terms of the GNU General Public License as published by
8 *      the Free Software Foundation; either version 2 of the License, or
9 *      (at your option) any later version.
10 */
11
12#include <linux/errno.h>
13#include <linux/init.h>
14#include <linux/interrupt.h>
15#include <linux/ioport.h>
16#include <linux/module.h>
17#include <linux/serial_core.h>
18#include <linux/signal.h>
19#include <linux/types.h>
20
21#include <asm/hardware.h>
22#include <asm/parisc-device.h>
23#include <asm/io.h>
24
25#include "8250.h"
26
27static int __init serial_init_chip(struct parisc_device *dev)
28{
29	struct uart_port port;
30	unsigned long address;
31	int err;
32
33	if (!dev->irq) {
34		/* We find some unattached serial ports by walking native
35		 * busses.  These should be silently ignored.  Otherwise,
36		 * what we have here is a missing parent device, so tell
37		 * the user what they're missing.
38		 */
39		if (parisc_parent(dev)->id.hw_type != HPHW_IOA)
40			printk(KERN_INFO
41				"Serial: device 0x%llx not configured.\n"
42				"Enable support for Wax, Lasi, Asp or Dino.\n",
43				(unsigned long long)dev->hpa.start);
44		return -ENODEV;
45	}
46
47	address = dev->hpa.start;
48	if (dev->id.sversion != 0x8d)
49		address += 0x800;
50
51	memset(&port, 0, sizeof(port));
52	port.iotype	= UPIO_MEM;
53	/* 7.272727MHz on Lasi.  Assumed the same for Dino, Wax and Timi. */
54	port.uartclk	= 7272727;
55	port.mapbase	= address;
56	port.membase	= ioremap_nocache(address, 16);
57	port.irq	= dev->irq;
58	port.flags	= UPF_BOOT_AUTOCONF;
59	port.dev	= &dev->dev;
60
61	err = serial8250_register_port(&port);
62	if (err < 0) {
63		printk(KERN_WARNING
64			"serial8250_register_port returned error %d\n", err);
65		iounmap(port.membase);
66		return err;
67	}
68
69	return 0;
70}
71
72static struct parisc_device_id serial_tbl[] = {
73	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
74	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
75	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
76	{ 0 }
77};
78
79/* Hack.  Some machines have SERIAL_0 attached to Lasi and SERIAL_1
80 * attached to Dino.  Unfortunately, Dino appears before Lasi in the device
81 * tree.  To ensure that ttyS0 == SERIAL_0, we register two drivers; one
82 * which only knows about Lasi and then a second which will find all the
83 * other serial ports.  HPUX ignores this problem.
84 */
85static struct parisc_device_id lasi_tbl[] = {
86	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03B, 0x0008C }, /* C1xx/C1xxL */
87	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03C, 0x0008C }, /* B132L */
88	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03D, 0x0008C }, /* B160L */
89	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03E, 0x0008C }, /* B132L+ */
90	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03F, 0x0008C }, /* B180L+ */
91	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x046, 0x0008C }, /* Rocky2 120 */
92	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x047, 0x0008C }, /* Rocky2 150 */
93	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x04E, 0x0008C }, /* Kiji L2 132 */
94	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x056, 0x0008C }, /* Raven+ */
95	{ 0 }
96};
97
98
99MODULE_DEVICE_TABLE(parisc, serial_tbl);
100
101static struct parisc_driver lasi_driver = {
102	.name		= "serial_1",
103	.id_table	= lasi_tbl,
104	.probe		= serial_init_chip,
105};
106
107static struct parisc_driver serial_driver = {
108	.name		= "serial",
109	.id_table	= serial_tbl,
110	.probe		= serial_init_chip,
111};
112
113static int __init probe_serial_gsc(void)
114{
115	register_parisc_driver(&lasi_driver);
116	register_parisc_driver(&serial_driver);
117	return 0;
118}
119
120module_init(probe_serial_gsc);
121
122MODULE_LICENSE("GPL");
123