patch-2.1.101 linux/arch/mips/deskstation/int-handler.S

• Lines: 105
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.100/linux/arch/mips/deskstation/int-handler.S
• Orig date: Wed Dec 10 10:31:09 1997

diff -u --recursive --new-file v2.1.100/linux/arch/mips/deskstation/int-handler.S linux/arch/mips/deskstation/int-handler.S
@@ -1,104 +0,0 @@
-/*
- * Deskstation rPC44/Tyne specific interrupt handler code
- *
- * Copyright (C) 1994, 1995, 1996, 1997 by Ralf Baechle
- *
- * $Id: int-handler.S,v 1.3 1997/09/20 19:20:09 root Exp $
- */
-#include <asm/asm.h>
-#include <asm/mipsconfig.h>
-#include <asm/mipsregs.h>
-#include <asm/regdef.h>
-#include <asm/stackframe.h>
-
-#error "FIXME - PORT_BASE is defined to mips_io_port_base which breaks this file"
-
-		.text
-		.set	noreorder
-		.set	noat
-		.align	5
-		NESTED(deskstation_handle_int, PT_SIZE, sp)
-		SAVE_ALL
-		REG_S	sp,PT_OR2(sp)
-		CLI
-		.set	at
-		lui	s0,%hi(PORT_BASE)
-		li	a0,0x0f
-		sb	a0,%lo(PORT_BASE+0x20)(s0)	# poll command
-		lb	a0,%lo(PORT_BASE+0x20)(s0)	# read result
-		bgtz	a0,poll_second
-		andi	a0,7
-		beq	a0,2,poll_second		# cascade?
-		li	s1,1				# delay slot
-		/*
-		 * Acknowledge first pic
-		 */
-		lb	t2,%lo(PORT_BASE+0x21)(s0)
-		lui	s4,%hi(cache_21)
-		lb	t0,%lo(cache_21)(s4)
-		sllv	s1,s1,a0
-		or	t0,s1
-		sb	t0,%lo(cache_21)(s4)
-		sb	t0,%lo(PORT_BASE+0x21)(s0)
-		li	t2,0x20
-		sb	t2,%lo(PORT_BASE+0x20)(s0)
-		/*
-		 * Now call the real handler
-		 */
-		jal	do_IRQ
-		 move	a1,sp
-		/*
-		 * Unblock first pic
-		 */
-		lbu	t1,%lo(PORT_BASE+0x21)(s0)
-		lb	t1,%lo(cache_21)(s4)
-		nor	s1,zero,s1
-		and	t1,s1
-		sb	t1,%lo(cache_21)(s4)
-		j	ret_from_irq
-		sb	t1,%lo(PORT_BASE+0x21)(s0)	# delay slot
-
-		/*
-		 * Cascade interrupt from second PIC
-		 */
-		.align	5
-poll_second:	li	a0,0x0f
-		sb	a0,%lo(PORT_BASE+0xa0)(s0)	# poll command
-		lb	a0,%lo(PORT_BASE+0xa0)(s0)	# read result
-		bgtz	a0,3f
-		andi	a0,7
-		/*
-		 * Acknowledge second pic
-		 */
-		lbu	t2,%lo(PORT_BASE+0xa1)(s0)
-		lui	s4,%hi(cache_A1)
-		lb	t3,%lo(cache_A1)(s4)
-		sllv	s1,s1,a0
-		or	t3,s1
-		sb	t3,%lo(cache_A1)(s4)
-		sb	t3,%lo(PORT_BASE+0xa1)(s0)
-		li	t3,0x20
-		sb	t3,%lo(PORT_BASE+0xa0)(s0)
-		sb	t3,%lo(PORT_BASE+0x20)(s0)
-		/*
-		 * Now call the real handler
-		 */
-		jal	do_IRQ
-		 nop
-		/*
-		 * Unblock second pic
-		 */
-		lb	t1,%lo(PORT_BASE+0xa1)(s0)
-		lb	t1,%lo(cache_A1)(s4)
-		nor	s1,zero,s1
-		and	t1,t1,s1
-		sb	t1,%lo(cache_A1)(s4)
-		j	ret_from_irq
-		 sb	t1,%lo(PORT_BASE+0xa1)(s0)
-
-/*
- * "Jump extender" to reach spurious_interrupt
- */
-3:		j	spurious_interrupt
-		 nop
-		END(deskstation_handle_int)