linux/arch/mips/sgi-ip27/ip27-console.c
Thomas Bogendoerfer b78e9d63a3
MIPS: SGI-IP27: use asm/sn/agent.h for including HUB related stuff
By including agent.h where hub related defines/structs are needed, we
have only one place to select, which agent chip (HUB or BEDROCK) is used.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
2020-01-09 15:29:50 -08:00

42 lines
938 B
C

/*
* 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 <asm/page.h>
#include <asm/setup.h>
#include <asm/sn/addrs.h>
#include <asm/sn/agent.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;
nasid_t nasid;
nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid;
ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base;
return &ioc3->sregs.uarta;
}
void prom_putchar(char c)
{
struct ioc3_uartregs *uart = console_uart();
while ((readb(&uart->iu_lsr) & 0x20) == 0)
;
writeb(c, &uart->iu_thr);
}