diff options
Diffstat (limited to 'arch/mips/powertv/asic/asic_int.c')
| -rw-r--r-- | arch/mips/powertv/asic/asic_int.c | 125 | 
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/mips/powertv/asic/asic_int.c b/arch/mips/powertv/asic/asic_int.c deleted file mode 100644 index f44cd9295ca..00000000000 --- a/arch/mips/powertv/asic/asic_int.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc. - * Copyright (C) 2001 Ralf Baechle - * Portions copyright (C) 2009	Cisco Systems, Inc. - * - *  This program is free software; you can distribute it and/or modify it - *  under the terms of the GNU General Public License (Version 2) as - *  published by the Free Software Foundation. - * - *  This program is distributed in the hope it will be useful, but WITHOUT - *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License - *  for more details. - * - *  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., - *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Routines for generic manipulation of the interrupts found on the PowerTV - * platform. - * - * The interrupt controller is located in the South Bridge a PIIX4 device - * with two internal 82C95 interrupt controllers. - */ -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> -#include <linux/kernel.h> -#include <linux/random.h> - -#include <asm/irq_cpu.h> -#include <linux/io.h> -#include <asm/irq_regs.h> -#include <asm/setup.h> -#include <asm/mips-boards/generic.h> - -#include <asm/mach-powertv/asic_regs.h> - -static DEFINE_RAW_SPINLOCK(asic_irq_lock); - -static inline int get_int(void) -{ -	unsigned long flags; -	int irq; - -	raw_spin_lock_irqsave(&asic_irq_lock, flags); - -	irq = (asic_read(int_int_scan) >> 4) - 1; - -	if (irq == 0 || irq >= NR_IRQS) -		irq = -1; - -	raw_spin_unlock_irqrestore(&asic_irq_lock, flags); - -	return irq; -} - -static void asic_irqdispatch(void) -{ -	int irq; - -	irq = get_int(); -	if (irq < 0) -		return;	 /* interrupt has already been cleared */ - -	do_IRQ(irq); -} - -static inline int clz(unsigned long x) -{ -	__asm__( -	"	.set	push					\n" -	"	.set	mips32					\n" -	"	clz	%0, %1					\n" -	"	.set	pop					\n" -	: "=r" (x) -	: "r" (x)); - -	return x; -} - -/* - * Version of ffs that only looks at bits 12..15. - */ -static inline unsigned int irq_ffs(unsigned int pending) -{ -	return fls(pending) - 1 + CAUSEB_IP; -} - -/* - * TODO: check how it works under EIC mode. - */ -asmlinkage void plat_irq_dispatch(void) -{ -	unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; -	int irq; - -	irq = irq_ffs(pending); - -	if (irq == CAUSEF_IP3) -		asic_irqdispatch(); -	else if (irq >= 0) -		do_IRQ(irq); -	else -		spurious_interrupt(); -} - -void __init arch_init_irq(void) -{ -	int i; - -	asic_irq_init(); - -	/* -	 * Initialize interrupt exception vectors. -	 */ -	if (cpu_has_veic || cpu_has_vint) { -		int nvec = cpu_has_veic ? 64 : 8; -		for (i = 0; i < nvec; i++) -			set_vi_handler(i, asic_irqdispatch); -	} -}  | 
