diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/sgi-ip27/ip27-console.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-console.c')
-rw-r--r-- | arch/mips/sgi-ip27/ip27-console.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/mips/sgi-ip27/ip27-console.c b/arch/mips/sgi-ip27/ip27-console.c new file mode 100644 index 000000000000..d97f5b5ef844 --- /dev/null +++ b/arch/mips/sgi-ip27/ip27-console.c | |||
@@ -0,0 +1,76 @@ | |||
1 | /* | ||
2 | * This file is subject to the terms and conditions of the GNU General Public | ||
3 | * License. See the file "COPYING" in the main directory of this archive | ||
4 | * for more details. | ||
5 | * | ||
6 | * Copyright (C) 2001, 2002 Ralf Baechle | ||
7 | */ | ||
8 | #include <linux/init.h> | ||
9 | #include <linux/console.h> | ||
10 | #include <linux/kdev_t.h> | ||
11 | #include <linux/major.h> | ||
12 | #include <linux/termios.h> | ||
13 | #include <linux/sched.h> | ||
14 | #include <linux/tty.h> | ||
15 | |||
16 | #include <asm/page.h> | ||
17 | #include <asm/semaphore.h> | ||
18 | #include <asm/sn/addrs.h> | ||
19 | #include <asm/sn/sn0/hub.h> | ||
20 | #include <asm/sn/klconfig.h> | ||
21 | #include <asm/sn/ioc3.h> | ||
22 | #include <asm/sn/sn_private.h> | ||
23 | |||
24 | #include <linux/serial.h> | ||
25 | #include <linux/serial_core.h> | ||
26 | |||
27 | #define IOC3_CLK (22000000 / 3) | ||
28 | #define IOC3_FLAGS (0) | ||
29 | |||
30 | static inline struct ioc3_uartregs *console_uart(void) | ||
31 | { | ||
32 | struct ioc3 *ioc3; | ||
33 | |||
34 | ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base; | ||
35 | |||
36 | return &ioc3->sregs.uarta; | ||
37 | } | ||
38 | |||
39 | void prom_putchar(char c) | ||
40 | { | ||
41 | struct ioc3_uartregs *uart = console_uart(); | ||
42 | |||
43 | while ((uart->iu_lsr & 0x20) == 0); | ||
44 | uart->iu_thr = c; | ||
45 | } | ||
46 | |||
47 | char __init prom_getchar(void) | ||
48 | { | ||
49 | return 0; | ||
50 | } | ||
51 | |||
52 | static void inline ioc3_console_probe(void) | ||
53 | { | ||
54 | struct uart_port up; | ||
55 | |||
56 | /* | ||
57 | * Register to interrupt zero because we share the interrupt with | ||
58 | * the serial driver which we don't properly support yet. | ||
59 | */ | ||
60 | memset(&up, 0, sizeof(up)); | ||
61 | up.membase = (unsigned char *) console_uart(); | ||
62 | up.irq = 0; | ||
63 | up.uartclk = IOC3_CLK; | ||
64 | up.regshift = 0; | ||
65 | up.iotype = UPIO_MEM; | ||
66 | up.flags = IOC3_FLAGS; | ||
67 | up.line = 0; | ||
68 | |||
69 | if (early_serial_setup(&up)) | ||
70 | printk(KERN_ERR "Early serial init of port 0 failed\n"); | ||
71 | } | ||
72 | |||
73 | __init void ip27_setup_console(void) | ||
74 | { | ||
75 | ioc3_console_probe(); | ||
76 | } | ||