Commit | Line | Data |
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1da177e4 LT |
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> | |
1da177e4 LT |
19 | #include <linux/types.h> |
20 | ||
21 | #include <asm/hardware.h> | |
22 | #include <asm/parisc-device.h> | |
23 | #include <asm/io.h> | |
1da177e4 LT |
24 | |
25 | #include "8250.h" | |
26 | ||
8b4a483b | 27 | static int __init serial_init_chip(struct parisc_device *dev) |
1da177e4 | 28 | { |
1da177e4 LT |
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 | */ | |
8b4a483b AC |
39 | if (parisc_parent(dev)->id.hw_type != HPHW_IOA) |
40 | printk(KERN_INFO | |
8e8e8267 | 41 | "Serial: device 0x%llx not configured.\n" |
53f01bba | 42 | "Enable support for Wax, Lasi, Asp or Dino.\n", |
8e8e8267 | 43 | (unsigned long long)dev->hpa.start); |
1da177e4 LT |
44 | return -ENODEV; |
45 | } | |
46 | ||
53f01bba | 47 | address = dev->hpa.start; |
8b4a483b | 48 | if (dev->id.sversion != 0x8d) |
1da177e4 | 49 | address += 0x800; |
1da177e4 | 50 | |
5076c158 HD |
51 | memset(&port, 0, sizeof(port)); |
52 | port.iotype = UPIO_MEM; | |
136ce40e MW |
53 | /* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */ |
54 | port.uartclk = 7272727; | |
5076c158 HD |
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; | |
1da177e4 LT |
60 | |
61 | err = serial8250_register_port(&port); | |
62 | if (err < 0) { | |
8b4a483b AC |
63 | printk(KERN_WARNING |
64 | "serial8250_register_port returned error %d\n", err); | |
d9964d5c | 65 | iounmap(port.membase); |
1da177e4 LT |
66 | return err; |
67 | } | |
8b4a483b | 68 | |
1da177e4 LT |
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 | ||
9f561dfc | 113 | static int __init probe_serial_gsc(void) |
1da177e4 LT |
114 | { |
115 | register_parisc_driver(&lasi_driver); | |
116 | register_parisc_driver(&serial_driver); | |
117 | return 0; | |
118 | } | |
119 | ||
120 | module_init(probe_serial_gsc); | |
920519c1 AB |
121 | |
122 | MODULE_LICENSE("GPL"); |