[MIPS] Rewrite all the assembler interrupt handlers to C.

Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had.  And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.

The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 2 insertions, 80 deletions

diff --git a/arch/mips/jmr3927/rbhma3100/Makefile b/arch/mips/jmr3927/rbhma3100/Makefile
index 75bf418..baf5077 100644
--- a/arch/mips/jmr3927/rbhma3100/Makefile
+++ b/arch/mips/jmr3927/rbhma3100/Makefile
@@ -2,7 +2,7 @@
 # Makefile for TOSHIBA JMR-TX3927 board
 #
 
-obj-y	 			+= init.o int-handler.o irq.o setup.o
+obj-y	 			+= init.o irq.o setup.o
 obj-$(CONFIG_RUNTIME_DEBUG) 	+= debug.o
 obj-$(CONFIG_KGDB)		+= kgdb_io.o
 
diff --git a/arch/mips/jmr3927/rbhma3100/int-handler.S b/arch/mips/jmr3927/rbhma3100/int-handler.S
deleted file mode 100644
index f85bbf4..0000000
--- a/arch/mips/jmr3927/rbhma3100/int-handler.S
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *              ahennessy@mvista.com
- *
- * Based on arch/mips/tsdb/kernel/int-handler.S
- *
- * Copyright (C) 2000-2001 Toshiba Corporation
- *
- *  This program is free software; you can redistribute  it and/or modify it
- *  under  the terms of  the GNU General  Public License as published by the
- *  Free Software Foundation;  either version 2 of the  License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <asm/asm.h>
-#include <asm/mipsregs.h>
-#include <asm/regdef.h>
-#include <asm/stackframe.h>
-#include <asm/jmr3927/jmr3927.h>
-
-	/* A lot of complication here is taken away because:
-	 *
-	 * 1) We handle one interrupt and return, sitting in a loop
-	 *    and moving across all the pending IRQ bits in the cause
-	 *    register is _NOT_ the answer, the common case is one
-	 *    pending IRQ so optimize in that direction.
-	 *
-	 * 2) We need not check against bits in the status register
-	 *    IRQ mask, that would make this routine slow as hell.
-	 *
-	 * 3) Linux only thinks in terms of all IRQs on or all IRQs
-	 *    off, nothing in between like BSD spl() brain-damage.
-	 *
-	 */
-
-/* Flush write buffer (needed?)
- * NOTE: TX39xx performs "non-blocking load", so explicitly use the target
- * register of LBU to flush immediately.
- */
-#define FLUSH_WB(tmp)	\
-	la	tmp, JMR3927_IOC_REV_ADDR; \
-	lbu	tmp, (tmp); \
-	move	tmp, zero;
-
-	.text
-	.set	noreorder
-	.set	noat
-	.align	5
-	NESTED(jmr3927_IRQ, PT_SIZE, sp)
-	SAVE_ALL
-	CLI
-	.set	at
-	jal	jmr3927_irc_irqdispatch
-	 move	a0, sp
-	FLUSH_WB(t0)
-	j	ret_from_irq
-	 nop
-	END(jmr3927_IRQ)
diff --git a/arch/mips/jmr3927/rbhma3100/irq.c b/arch/mips/jmr3927/rbhma3100/irq.c
index 2810727..11304d1 100644
--- a/arch/mips/jmr3927/rbhma3100/irq.c
+++ b/arch/mips/jmr3927/rbhma3100/irq.c
@@ -77,8 +77,6 @@ static int jmr3927_gen_iack(void)
 }
 #endif
 
-extern asmlinkage void jmr3927_IRQ(void);
-
 #define irc_dlevel	0
 #define irc_elevel	1
 
@@ -262,7 +260,7 @@ void jmr3927_spurious(struct pt_regs *regs)
 	       regs->cp0_cause, regs->cp0_epc, regs->regs[31]);
 }
 
-void jmr3927_irc_irqdispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 {
 	int irq;
 
@@ -398,8 +396,6 @@ void __init arch_init_irq(void)
 
 	jmr3927_irq_init(NR_ISA_IRQS);
 
-	set_except_vector(0, jmr3927_IRQ);
-
 	/* setup irq space */
 	add_tb_irq_space(&jmr3927_isac_irqspace);
 	add_tb_irq_space(&jmr3927_ioc_irqspace);