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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 | |
27 | static 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 | |
72 | static 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 | */ |
85 | static 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 | |
99 | MODULE_DEVICE_TABLE(parisc, serial_tbl); |
100 | |
101 | static struct parisc_driver lasi_driver = { |
102 | .name = "serial_1", |
103 | .id_table = lasi_tbl, |
104 | .probe = serial_init_chip, |
105 | }; |
106 | |
107 | static struct parisc_driver serial_driver = { |
108 | .name = "serial", |
109 | .id_table = serial_tbl, |
110 | .probe = serial_init_chip, |
111 | }; |
112 | |
113 | static int __init probe_serial_gsc(void) |
114 | { |
115 | register_parisc_driver(&lasi_driver); |
116 | register_parisc_driver(&serial_driver); |
117 | return 0; |
118 | } |
119 | |
120 | module_init(probe_serial_gsc); |
121 | |
122 | MODULE_LICENSE("GPL"); |
123 |
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