patch-2.4.2 linux/arch/s390/kernel/s390mach.c

• Lines: 158
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.1/linux/arch/s390/kernel/s390mach.c
• Orig date: Fri May 12 11:41:45 2000

diff -u --recursive --new-file v2.4.1/linux/arch/s390/kernel/s390mach.c linux/arch/s390/kernel/s390mach.c
@@ -1,157 +0,0 @@
-/*
- *  arch/s390/kernel/s390mach.c
- *   S/390 machine check handler,
- *            currently only channel-reports are supported
- *
- *  S390 version
- *    Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Ingo Adlung (adlung@de.ibm.com)
- */
-
-#include <linux/init.h>
-
-#include <asm/irq.h>
-#include <asm/lowcore.h>
-#include <asm/semaphore.h>
-#include <asm/s390io.h>
-#include <asm/s390dyn.h>
-#include <asm/s390mach.h>
-
-#define S390_MACHCHK_DEBUG
-
-static mchchk_queue_element_t *mchchk_queue_head = NULL;
-static mchchk_queue_element_t *mchchk_queue_tail = NULL;
-static mchchk_queue_element_t *mchchk_queue_free = NULL;
-static spinlock_t              mchchk_queue_lock;
-static struct semaphore        s_sem[2];
-
-//
-// initialize machine check handling
-//
-void s390_init_machine_check( void )
-{
-	init_MUTEX_LOCKED( &s_sem[0] );
-	init_MUTEX_LOCKED( &s_sem[1] );
-
-#if 0
-	//
-	// fix me ! initialize a machine check queue with 100 elements
-	//
-#ifdef S390_MACHCHK_DEBUG
-	printk( "init_mach : starting kernel thread\n");
-#endif	
-
-	kernel_thread( s390_machine_check_handler, s_sem, 0);
-
-	//
-	// wait for the machine check handler to be ready
-	//
-#ifdef S390_MACHCHK_DEBUG
-	printk( "init_mach : waiting for kernel thread\n");
-#endif	
-
-	down( &sem[0]);
-
-#ifdef S390_MACHCHK_DEBUG
-	printk( "init_mach : kernel thread ready\n");
-#endif	
-
-	//
-	// fix me ! we have to initialize CR14 to allow for CRW pending
-	//           conditions
-
-	//
-	// fix me ! enable machine checks in the PSW
-	//
-#endif
-	return;
-}
-
-//
-// machine check pre-processor
-//
-void __init s390_do_machine_check( void )
-{
-   // fix me ! we have to check for machine check and
-   //          post the handler eventually
-
-	return;
-}
-
-//
-// machine check handler
-//
-static void __init s390_machine_check_handler( struct semaphore *sem )
-{
-#ifdef S390_MACHCHK_DEBUG
-	printk( "mach_handler : kernel thread up\n");
-#endif	
-
-	up( &sem[0] );
-
-#ifdef S390_MACHCHK_DEBUG
-	printk( "mach_handler : kernel thread ready\n");
-#endif	
-
-	do {
-
-#ifdef S390_MACHCHK_DEBUG
-	printk( "mach_handler : waiting for wakeup\n");
-#endif	
-
-		down_interruptible( &sem[1] );
-#ifdef S390_MACHCHK_DEBUG
-	printk( "mach_handler : wakeup\n");
-#endif	
-
-		break;	// fix me ! unconditional surrender ...
-  	
-		// fix me ! check for machine checks and
-		//          call do_crw_pending() eventually
-	
-	} while (1);
-
-	return;
-}
-
-mchchk_queue_element_t *s390_get_mchchk( void )
-{
-	unsigned long           flags;
-	mchchk_queue_element_t *qe;
-
-	spin_lock_irqsave( &mchchk_queue_lock, flags );
-
-	// fix me ! dequeue first element if available
-	qe = NULL;
-
-	spin_unlock_irqrestore( &mchchk_queue_lock, flags );
-
-	return qe;
-}
-
-void s390_free_mchchk( mchchk_queue_element_t *mchchk )
-{
-	unsigned long flags;
-
-	if ( mchchk != NULL)
-	{
-		spin_lock_irqsave( &mchchk_queue_lock, flags );
-		
-		mchchk->next      = mchchk_queue_free;
-
-		if ( mchchk_queue_free != NULL )
-		{
-			mchchk_queue_free->prev = mchchk;
-
-		} /* endif */
-
-		mchchk->prev      = NULL;
-		mchchk_queue_free = mchchk;
-
-		spin_unlock_irqrestore( &mchchk_queue_lock, flags );
-
-	} /* endif */
-
-	return;
-}
-