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/*
* Copyright (C) 2010-2015 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained from Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* @file mali_osk_misc.c
* Implementation of the OS abstraction layer for the kernel device driver
*/
#include <linux/kernel.h>
#include <asm/uaccess.h>
#include <asm/cacheflush.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include "mali_osk.h"
#if !defined(CONFIG_MALI_QUIET)
void _mali_osk_dbgmsg(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vprintk(fmt, args);
va_end(args);
}
#endif /* !defined(CONFIG_MALI_QUIET) */
u32 _mali_osk_snprintf(char *buf, u32 size, const char *fmt, ...)
{
int res;
va_list args;
va_start(args, fmt);
res = vscnprintf(buf, (size_t)size, fmt, args);
va_end(args);
return res;
}
void _mali_osk_ctxprintf(_mali_osk_print_ctx *print_ctx, const char *fmt, ...)
{
va_list args;
char buf[512];
va_start(args, fmt);
vscnprintf(buf, 512, fmt, args);
seq_printf(print_ctx, buf);
va_end(args);
}
void _mali_osk_abort(void)
{
/* make a simple fault by dereferencing a NULL pointer */
dump_stack();
*(int *)0 = 0;
}
void _mali_osk_break(void)
{
_mali_osk_abort();
}
u32 _mali_osk_get_pid(void)
{
/* Thread group ID is the process ID on Linux */
return (u32)current->tgid;
}
char *_mali_osk_get_comm(void)
{
return (char *)current->comm;
}
u32 _mali_osk_get_tid(void)
{
/* pid is actually identifying the thread on Linux */
u32 tid = current->pid;
/* If the pid is 0 the core was idle. Instead of returning 0 we return a special number
* identifying which core we are on. */
if (0 == tid) {
tid = -(1 + raw_smp_processor_id());
}
return tid;
}
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