summaryrefslogtreecommitdiffstats
path: root/arch/mips/pmc-sierra/yosemite/py-console.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite/py-console.c')
-rw-r--r--arch/mips/pmc-sierra/yosemite/py-console.c109
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 b7f1d9c4a8a3..000000000000
--- 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);
-}
OpenPOWER on IntegriCloud