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original_kernel/arch/mips/tx4938/common/irq.c

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Support for Toshiba's RBHMA4500 eval board for the TX4938. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-07-26 06:45:45 +08:00
/*
fix file specification in comments Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-04 05:01:26 +08:00
* linux/arch/mips/tx4938/common/irq.c
Support for Toshiba's RBHMA4500 eval board for the TX4938. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-07-26 06:45:45 +08:00
*
* Common tx4938 irq handler
* Copyright (C) 2000-2001 Toshiba Corporation
*
* 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
* terms of the GNU General Public License version 2. This program is
* licensed "as is" without any warranty of any kind, whether express
* or implied.
*
* Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
*/
#include <linux/init.h>
#include <linux/interrupt.h>
[MIPS] Cleanup TX39/TX49 irq code Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-02 22:36:02 +08:00
#include <asm/irq_cpu.h>
Support for Toshiba's RBHMA4500 eval board for the TX4938. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-07-26 06:45:45 +08:00
#include <asm/mipsregs.h>
#include <asm/tx4938/rbtx4938.h>
void __init
tx4938_irq_init(void)
{
[MIPS] Cleanup TX39/TX49 irq code Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-02 22:36:02 +08:00
mips_cpu_irq_init();
txx9_irq_init(TX4938_IRC_REG);
set_irq_chained_handler(TX4938_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
Support for Toshiba's RBHMA4500 eval board for the TX4938. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-07-26 06:45:45 +08:00
}
[MIPS] Cleanup TX39/TX49 irq code Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-02 22:36:02 +08:00
int toshiba_rbtx4938_irq_nested(int irq);
[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>
2006-04-04 00:56:36 +08:00
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
asmlinkage void plat_irq_dispatch(void)
[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>
2006-04-04 00:56:36 +08:00
{
unsigned int pending = read_c0_cause() & read_c0_status();
if (pending & STATUSF_IP7)
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
do_IRQ(TX4938_IRQ_CPU_TIMER);
[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>
2006-04-04 00:56:36 +08:00
else if (pending & STATUSF_IP2) {
[MIPS] Cleanup TX39/TX49 irq code Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-02 22:36:02 +08:00
int irq = txx9_irq();
if (irq == TX4938_IRQ_PIC_BEG + TX4938_IR_INT(0))
irq = toshiba_rbtx4938_irq_nested(irq);
if (irq >= 0)
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
do_IRQ(irq);
[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>
2006-04-04 00:56:36 +08:00
else
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
spurious_interrupt();
[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>
2006-04-04 00:56:36 +08:00
} else if (pending & STATUSF_IP1)
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
do_IRQ(TX4938_IRQ_USER1);
[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>
2006-04-04 00:56:36 +08:00
else if (pending & STATUSF_IP0)
[MIPS] Complete fixes after removal of pt_regs argument to int handlers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:44:33 +08:00
do_IRQ(TX4938_IRQ_USER0);
[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>
2006-04-04 00:56:36 +08:00
}