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1da177e4 LT |
1 | /* |
2 | * Platform dependent support for HP simulator. | |
3 | * | |
4 | * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co | |
5 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
6 | * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com> | |
7 | */ | |
1da177e4 LT |
8 | |
9 | #include <linux/init.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/param.h> | |
12 | #include <linux/string.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/tty.h> | |
15 | #include <linux/kdev_t.h> | |
16 | #include <linux/console.h> | |
17 | ||
18 | #include <asm/delay.h> | |
19 | #include <asm/irq.h> | |
20 | #include <asm/pal.h> | |
21 | #include <asm/machvec.h> | |
22 | #include <asm/pgtable.h> | |
23 | #include <asm/sal.h> | |
8b713c67 | 24 | #include <asm/hpsim.h> |
1da177e4 LT |
25 | |
26 | #include "hpsim_ssc.h" | |
27 | ||
28 | static int simcons_init (struct console *, char *); | |
29 | static void simcons_write (struct console *, const char *, unsigned); | |
30 | static struct tty_driver *simcons_console_device (struct console *, int *); | |
31 | ||
8b713c67 | 32 | static struct console hpsim_cons = { |
1da177e4 LT |
33 | .name = "simcons", |
34 | .write = simcons_write, | |
35 | .device = simcons_console_device, | |
36 | .setup = simcons_init, | |
37 | .flags = CON_PRINTBUFFER, | |
38 | .index = -1, | |
39 | }; | |
40 | ||
41 | static int | |
42 | simcons_init (struct console *cons, char *options) | |
43 | { | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static void | |
48 | simcons_write (struct console *cons, const char *buf, unsigned count) | |
49 | { | |
50 | unsigned long ch; | |
51 | ||
52 | while (count-- > 0) { | |
53 | ch = *buf++; | |
54 | ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR); | |
55 | if (ch == '\n') | |
56 | ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR); | |
57 | } | |
58 | } | |
59 | ||
60 | static struct tty_driver *simcons_console_device (struct console *c, int *index) | |
61 | { | |
1da177e4 LT |
62 | *index = c->index; |
63 | return hp_simserial_driver; | |
64 | } | |
8b713c67 PC |
65 | |
66 | int simcons_register(void) | |
67 | { | |
68 | if (!ia64_platform_is("hpsim")) | |
69 | return 1; | |
70 | ||
71 | if (hpsim_cons.flags & CON_ENABLED) | |
72 | return 1; | |
73 | ||
74 | register_console(&hpsim_cons); | |
75 | return 0; | |
76 | } |