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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c')
-rw-r--r-- | ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c b/ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c deleted file mode 100644 index 972263bc..00000000 --- a/ANDROID_3.4.5/arch/mips/kernel/irq_cpu.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * Copyright (C) 2001 Ralf Baechle - * Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved. - * Author: Maciej W. Rozycki <macro@mips.com> - * - * This file define the irq handler for MIPS CPU interrupts. - * - * 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. - */ - -/* - * Almost all MIPS CPUs define 8 interrupt sources. They are typically - * level triggered (i.e., cannot be cleared from CPU; must be cleared from - * device). The first two are software interrupts which we don't really - * use or support. The last one is usually the CPU timer interrupt if - * counter register is present or, for CPUs with an external FPU, by - * convention it's the FPU exception interrupt. - * - * Don't even think about using this on SMP. You have been warned. - * - * This file exports one global function: - * void mips_cpu_irq_init(void); - */ -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/irq.h> - -#include <asm/irq_cpu.h> -#include <asm/mipsregs.h> -#include <asm/mipsmtregs.h> - -static inline void unmask_mips_irq(struct irq_data *d) -{ - set_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - irq_enable_hazard(); -} - -static inline void mask_mips_irq(struct irq_data *d) -{ - clear_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - irq_disable_hazard(); -} - -static struct irq_chip mips_cpu_irq_controller = { - .name = "MIPS", - .irq_ack = mask_mips_irq, - .irq_mask = mask_mips_irq, - .irq_mask_ack = mask_mips_irq, - .irq_unmask = unmask_mips_irq, - .irq_eoi = unmask_mips_irq, -}; - -/* - * Basically the same as above but taking care of all the MT stuff - */ - -static unsigned int mips_mt_cpu_irq_startup(struct irq_data *d) -{ - unsigned int vpflags = dvpe(); - - clear_c0_cause(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - evpe(vpflags); - unmask_mips_irq(d); - return 0; -} - -/* - * While we ack the interrupt interrupts are disabled and thus we don't need - * to deal with concurrency issues. Same for mips_cpu_irq_end. - */ -static void mips_mt_cpu_irq_ack(struct irq_data *d) -{ - unsigned int vpflags = dvpe(); - clear_c0_cause(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - evpe(vpflags); - mask_mips_irq(d); -} - -static struct irq_chip mips_mt_cpu_irq_controller = { - .name = "MIPS", - .irq_startup = mips_mt_cpu_irq_startup, - .irq_ack = mips_mt_cpu_irq_ack, - .irq_mask = mask_mips_irq, - .irq_mask_ack = mips_mt_cpu_irq_ack, - .irq_unmask = unmask_mips_irq, - .irq_eoi = unmask_mips_irq, -}; - -void __init mips_cpu_irq_init(void) -{ - int irq_base = MIPS_CPU_IRQ_BASE; - int i; - - /* Mask interrupts. */ - clear_c0_status(ST0_IM); - clear_c0_cause(CAUSEF_IP); - - /* Software interrupts are used for MT/CMT IPI */ - for (i = irq_base; i < irq_base + 2; i++) - irq_set_chip_and_handler(i, cpu_has_mipsmt ? - &mips_mt_cpu_irq_controller : - &mips_cpu_irq_controller, - handle_percpu_irq); - - for (i = irq_base + 2; i < irq_base + 8; i++) - irq_set_chip_and_handler(i, &mips_cpu_irq_controller, - handle_percpu_irq); -} |