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