diff options
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite/py-console.c')
-rw-r--r-- | arch/mips/pmc-sierra/yosemite/py-console.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/py-console.c b/arch/mips/pmc-sierra/yosemite/py-console.c deleted file mode 100644 index b7f1d9c..0000000 --- a/arch/mips/pmc-sierra/yosemite/py-console.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * 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, 2004 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 <linux/serial.h> -#include <linux/serial_core.h> -#include <asm/serial.h> -#include <asm/io.h> - -/* SUPERIO uart register map */ -struct yo_uartregs { - union { - volatile u8 rbr; /* read only, DLAB == 0 */ - volatile u8 thr; /* write only, DLAB == 0 */ - volatile u8 dll; /* DLAB == 1 */ - } u1; - union { - volatile u8 ier; /* DLAB == 0 */ - volatile u8 dlm; /* DLAB == 1 */ - } u2; - union { - volatile u8 iir; /* read only */ - volatile u8 fcr; /* write only */ - } u3; - volatile u8 iu_lcr; - volatile u8 iu_mcr; - volatile u8 iu_lsr; - volatile u8 iu_msr; - volatile u8 iu_scr; -} yo_uregs_t; - -#define iu_rbr u1.rbr -#define iu_thr u1.thr -#define iu_dll u1.dll -#define iu_ier u2.ier -#define iu_dlm u2.dlm -#define iu_iir u3.iir -#define iu_fcr u3.fcr - -#define ssnop() __asm__ __volatile__("sll $0, $0, 1\n"); -#define ssnop_4() do { ssnop(); ssnop(); ssnop(); ssnop(); } while (0) - -#define IO_BASE_64 0x9000000000000000ULL - -static unsigned char readb_outer_space(unsigned long long phys) -{ - unsigned long long vaddr = IO_BASE_64 | phys; - unsigned char res; - unsigned int sr; - - sr = read_c0_status(); - write_c0_status((sr | ST0_KX) & ~ ST0_IE); - ssnop_4(); - - __asm__ __volatile__ ( - " .set mips3 \n" - " ld %0, %1 \n" - " lbu %0, (%0) \n" - " .set mips0 \n" - : "=r" (res) - : "m" (vaddr)); - - write_c0_status(sr); - ssnop_4(); - - return res; -} - -static void writeb_outer_space(unsigned long long phys, unsigned char c) -{ - unsigned long long vaddr = IO_BASE_64 | phys; - unsigned long tmp; - unsigned int sr; - - sr = read_c0_status(); - write_c0_status((sr | ST0_KX) & ~ ST0_IE); - ssnop_4(); - - __asm__ __volatile__ ( - " .set mips3 \n" - " ld %0, %1 \n" - " sb %2, (%0) \n" - " .set mips0 \n" - : "=&r" (tmp) - : "m" (vaddr), "r" (c)); - - write_c0_status(sr); - ssnop_4(); -} - -void prom_putchar(char c) -{ - unsigned long lsr = 0xfd000008ULL + offsetof(struct yo_uartregs, iu_lsr); - unsigned long thr = 0xfd000008ULL + offsetof(struct yo_uartregs, iu_thr); - - while ((readb_outer_space(lsr) & 0x20) == 0); - writeb_outer_space(thr, c); -} |