2007-07-22 09:08:48 -06:00
|
|
|
/* linux/include/asm-arm/plat-s3c/debug-macro.S
|
|
|
|
|
*
|
|
|
|
|
* Copyright 2005, 2007 Simtec Electronics
|
|
|
|
|
* http://armlinux.simtec.co.uk/
|
|
|
|
|
* Ben Dooks <ben@simtec.co.uk>
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
|
|
|
* published by the Free Software Foundation.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <asm/plat-s3c/regs-serial.h>
|
|
|
|
|
|
2007-07-22 09:10:23 -06:00
|
|
|
/* The S3C2440 implementations are used by default as they are the
|
|
|
|
|
* most widely re-used */
|
|
|
|
|
|
|
|
|
|
.macro fifo_level_s3c2440 rd, rx
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
|
|
|
|
and \rd, \rd, #S3C2440_UFSTAT_TXMASK
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
#ifndef fifo_level
|
|
|
|
|
#define fifo_level fifo_level_s3c2410
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
.macro fifo_full_s3c2440 rd, rx
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
|
|
|
|
tst \rd, #S3C2440_UFSTAT_TXFULL
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
#ifndef fifo_full
|
|
|
|
|
#define fifo_full fifo_full_s3c2440
|
|
|
|
|
#endif
|
2007-07-22 09:08:48 -06:00
|
|
|
|
|
|
|
|
.macro senduart,rd,rx
|
|
|
|
|
strb \rd, [\rx, # S3C2410_UTXH ]
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro busyuart, rd, rx
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFCON ]
|
|
|
|
|
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
|
|
|
|
|
beq 1001f @
|
|
|
|
|
@ FIFO enabled...
|
|
|
|
|
1003:
|
|
|
|
|
fifo_full \rd, \rx
|
|
|
|
|
bne 1003b
|
|
|
|
|
b 1002f
|
|
|
|
|
|
|
|
|
|
1001:
|
|
|
|
|
@ busy waiting for non fifo
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
|
|
|
|
|
tst \rd, #S3C2410_UTRSTAT_TXFE
|
|
|
|
|
beq 1001b
|
|
|
|
|
|
|
|
|
|
1002: @ exit busyuart
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro waituart,rd,rx
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFCON ]
|
|
|
|
|
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
|
|
|
|
|
beq 1001f @
|
|
|
|
|
@ FIFO enabled...
|
|
|
|
|
1003:
|
|
|
|
|
fifo_level \rd, \rx
|
|
|
|
|
teq \rd, #0
|
|
|
|
|
bne 1003b
|
|
|
|
|
b 1002f
|
|
|
|
|
1001:
|
|
|
|
|
@ idle waiting for non fifo
|
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
|
|
|
|
|
tst \rd, #S3C2410_UTRSTAT_TXFE
|
|
|
|
|
beq 1001b
|
|
|
|
|
|
|
|
|
|
1002: @ exit busyuart
|
|
|
|
|
.endm
|
