diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
commit | a9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch) | |
tree | 886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/sparc/prom/console_64.c | |
parent | b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff) | |
parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) |
Merge branch 'linus' into stackprotector
Conflicts:
arch/x86/include/asm/pda.h
kernel/fork.c
Diffstat (limited to 'arch/sparc/prom/console_64.c')
-rw-r--r-- | arch/sparc/prom/console_64.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c new file mode 100644 index 00000000000..e1c3fc87484 --- /dev/null +++ b/arch/sparc/prom/console_64.c @@ -0,0 +1,74 @@ +/* console.c: Routines that deal with sending and receiving IO + * to/from the current console device using the PROM. + * + * Copyright (C) 1995 David S. Miller (davem@davemloft.net) + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <asm/openprom.h> +#include <asm/oplib.h> +#include <asm/system.h> +#include <linux/string.h> + +extern int prom_stdin, prom_stdout; + +/* Non blocking get character from console input device, returns -1 + * if no input was taken. This can be used for polling. + */ +inline int +prom_nbgetchar(void) +{ + char inc; + + if (p1275_cmd("read", P1275_ARG(1,P1275_ARG_OUT_BUF)| + P1275_INOUT(3,1), + prom_stdin, &inc, P1275_SIZE(1)) == 1) + return inc; + else + return -1; +} + +/* Non blocking put character to console device, returns -1 if + * unsuccessful. + */ +inline int +prom_nbputchar(char c) +{ + char outc; + + outc = c; + if (p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)| + P1275_INOUT(3,1), + prom_stdout, &outc, P1275_SIZE(1)) == 1) + return 0; + else + return -1; +} + +/* Blocking version of get character routine above. */ +char +prom_getchar(void) +{ + int character; + while((character = prom_nbgetchar()) == -1) ; + return (char) character; +} + +/* Blocking version of put character routine above. */ +void +prom_putchar(char c) +{ + prom_nbputchar(c); + return; +} + +void +prom_puts(const char *s, int len) +{ + p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)| + P1275_INOUT(3,1), + prom_stdout, s, P1275_SIZE(len)); +} |