diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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 00000000000..d97f5b5ef84 --- /dev/null +++ b/arch/mips/sgi-ip27/ip27-console.c @@ -0,0 +1,76 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001, 2002 Ralf Baechle + */ +#include <linux/init.h> +#include <linux/console.h> +#include <linux/kdev_t.h> +#include <linux/major.h> +#include <linux/termios.h> +#include <linux/sched.h> +#include <linux/tty.h> + +#include <asm/page.h> +#include <asm/semaphore.h> +#include <asm/sn/addrs.h> +#include <asm/sn/sn0/hub.h> +#include <asm/sn/klconfig.h> +#include <asm/sn/ioc3.h> +#include <asm/sn/sn_private.h> + +#include <linux/serial.h> +#include <linux/serial_core.h> + +#define IOC3_CLK (22000000 / 3) +#define IOC3_FLAGS (0) + +static inline struct ioc3_uartregs *console_uart(void) +{ + struct ioc3 *ioc3; + + ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base; + + return &ioc3->sregs.uarta; +} + +void prom_putchar(char c) +{ + struct ioc3_uartregs *uart = console_uart(); + + while ((uart->iu_lsr & 0x20) == 0); + uart->iu_thr = c; +} + +char __init prom_getchar(void) +{ + return 0; +} + +static void inline ioc3_console_probe(void) +{ + struct uart_port up; + + /* + * Register to interrupt zero because we share the interrupt with + * the serial driver which we don't properly support yet. + */ + memset(&up, 0, sizeof(up)); + up.membase = (unsigned char *) console_uart(); + up.irq = 0; + up.uartclk = IOC3_CLK; + up.regshift = 0; + up.iotype = UPIO_MEM; + up.flags = IOC3_FLAGS; + up.line = 0; + + if (early_serial_setup(&up)) + printk(KERN_ERR "Early serial init of port 0 failed\n"); +} + +__init void ip27_setup_console(void) +{ + ioc3_console_probe(); +} |