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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c76
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
30static 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
39void 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
47char __init prom_getchar(void)
48{
49 return 0;
50}
51
52static 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}