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CRIS v10: Update and fix bug in kernel/debugport.

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- Move local_irq_save to after possible return in console_write_direct.
- Remove old raw_printk hack, not needed anymore.
- Add watchdog handling.
- Make serial_driver use depend on CONFIG_ETRAX_SERIAL.
- Remove useless CVS log.
This commit is contained in:
Jesper Nilsson 2008-01-18 13:44:13 +01:00
parent d8468472e4
commit 18b0f34616
1 changed files with 23 additions and 111 deletions
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134
arch/cris/arch-v10/kernel/debugport.c
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@ -1,6 +1,6 @@
/* Serialport functions for debugging
*
* Copyright (c) 2000 Axis Communications AB
* Copyright (c) 2000-2007 Axis Communications AB
*
* Authors: Bjorn Wesen
*
@ -11,96 +11,6 @@
* enableDebugIRQ()
* init_etrax_debug()
*
* $Log: debugport.c,v $
* Revision 1.27 2005/06/10 10:34:14 starvik
* Real console support
*
* Revision 1.26 2005/06/07 07:06:07 starvik
* Added LF->CR translation to make ETRAX customers happy.
*
* Revision 1.25 2005/03/08 08:56:47 mikaelam
* Do only set index as port->index if port is defined, otherwise use the index from the command line
*
* Revision 1.24 2005/01/19 10:26:33 mikaelam
* Return the cris serial driver in console device driver callback function
*
* Revision 1.23 2005/01/14 10:12:17 starvik
* KGDB on separate port.
* Console fixes from 2.4.
*
* Revision 1.22 2005/01/11 16:06:13 starvik
* typo
*
* Revision 1.21 2005/01/11 13:49:14 starvik
* Added raw_printk to be used where we don't trust the console.
*
* Revision 1.20 2004/12/27 11:18:32 starvik
* Merge of Linux 2.6.10 (not functional yet).
*
* Revision 1.19 2004/10/21 07:26:16 starvik
* Made it possible to specify console settings on kernel command line.
*
* Revision 1.18 2004/10/19 13:07:37 starvik
* Merge of Linux 2.6.9
*
* Revision 1.17 2004/09/29 10:33:46 starvik
* Resolved a dealock when printing debug from kernel.
*
* Revision 1.16 2004/08/24 06:12:19 starvik
* Whitespace cleanup
*
* Revision 1.15 2004/08/16 12:37:19 starvik
* Merge of Linux 2.6.8
*
* Revision 1.14 2004/05/17 13:11:29 starvik
* Disable DMA until real serial driver is up
*
* Revision 1.13 2004/05/14 07:58:01 starvik
* Merge of changes from 2.4
*
* Revision 1.12 2003/09/11 07:29:49 starvik
* Merge of Linux 2.6.0-test5
*
* Revision 1.11 2003/07/07 09:53:36 starvik
* Revert all the 2.5.74 merge changes to make the console work again
*
* Revision 1.9 2003/02/17 17:07:23 starvik
* Solved the problem with corrupted debug output (from Linux 2.4)
* * Wait until DMA, FIFO and pipe is empty before and after transmissions
* * Buffer data until a FIFO flush can be triggered.
*
* Revision 1.8 2003/01/22 06:48:36 starvik
* Fixed warnings issued by GCC 3.2.1
*
* Revision 1.7 2002/12/12 08:26:32 starvik
* Don't use C-comments inside CVS comments
*
* Revision 1.6 2002/12/11 15:42:02 starvik
* Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/
*
* Revision 1.5 2002/11/20 06:58:03 starvik
* Compiles with kgdb
*
* Revision 1.4 2002/11/19 14:35:24 starvik
* Changes from linux 2.4
* Changed struct initializer syntax to the currently preferred notation
*
* Revision 1.3 2002/11/06 09:47:03 starvik
* Modified for new interrupt macros
*
* Revision 1.2 2002/01/21 15:21:50 bjornw
* Update for kdev_t changes
*
* Revision 1.6 2001/04/17 13:58:39 orjanf
* * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
*
* Revision 1.5 2001/03/26 14:22:05 bjornw
* Namechange of some config options
*
* Revision 1.4 2000/10/06 12:37:26 bjornw
* Use physical addresses when talking to DMA
*
*
*/
#include <linux/console.h>
@ -112,6 +22,8 @@
#include <asm/arch/svinto.h>
#include <asm/io.h> /* Get SIMCOUT. */
extern void reset_watchdog(void);
struct dbg_port
{
unsigned int index;
@ -188,7 +100,9 @@ struct dbg_port ports[]=
}
};
#ifdef CONFIG_ETRAX_SERIAL
extern struct tty_driver *serial_driver;
#endif
struct dbg_port* port =
#if defined(CONFIG_ETRAX_DEBUG_PORT0)
@ -368,11 +282,12 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
{
int i;
unsigned long flags;
local_irq_save(flags);
if (!port)
return;
local_irq_save(flags);
/* Send data */
for (i = 0; i < len; i++) {
/* LF -> CRLF */
@ -386,26 +301,16 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
;
*port->write = buf[i];
}
local_irq_restore(flags);
}
int raw_printk(const char *fmt, ...)
{
static char buf[1024];
int printed_len;
static int first = 1;
if (first) {
/* Force reinitialization of the port to get manual mode. */
port->started = 0;
start_port(port);
first = 0;
}
va_list args;
va_start(args, fmt);
printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
console_write_direct(NULL, buf, strlen(buf));
return printed_len;
/*
* Feed the watchdog, otherwise it will reset the chip during boot.
* The time to send an ordinary boot message line (10-90 chars)
* varies between 1-8ms at 115200. What makes up for the additional
* 90ms that allows the watchdog to bite?
*/
reset_watchdog();
local_irq_restore(flags);
}
static void
@ -500,6 +405,7 @@ console_setup(struct console *co, char *options)
return 0;
}
/* This is a dummy serial device that throws away anything written to it.
* This is used when no debug output is wanted.
*/
@ -555,7 +461,13 @@ etrax_console_device(struct console* co, int *index)
{
if (port)
*index = port->index;
else
*index = 0;
#ifdef CONFIG_ETRAX_SERIAL
return port ? serial_driver : &dummy_driver;
#else
return &dummy_driver;
#endif
}
static struct console sercons = {