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Diffstat (limited to '')
| -rw-r--r-- | arch/mips/lasat/interrupt.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c deleted file mode 100644 index 9a622b9a1051..000000000000 --- a/arch/mips/lasat/interrupt.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * 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 - * Lasat boards. - */ -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> - -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/lasat/lasatint.h> -#include <asm/time.h> -#include <asm/gdb-stub.h> - -static volatile int *lasat_int_status = NULL; -static volatile int *lasat_int_mask = NULL; -static volatile int lasat_int_mask_shift; - -void disable_lasat_irq(unsigned int irq_nr) -{ - *lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift; -} - -void enable_lasat_irq(unsigned int irq_nr) -{ - *lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift; -} - -static struct irq_chip lasat_irq_type = { - .name = "Lasat", - .ack = disable_lasat_irq, - .mask = disable_lasat_irq, - .mask_ack = disable_lasat_irq, - .unmask = enable_lasat_irq, -}; - -static inline int ls1bit32(unsigned int x) -{ - int b = 31, s; - - s = 16; if (x << 16 == 0) s = 0; b -= s; x <<= s; - s = 8; if (x << 8 == 0) s = 0; b -= s; x <<= s; - s = 4; if (x << 4 == 0) s = 0; b -= s; x <<= s; - s = 2; if (x << 2 == 0) s = 0; b -= s; x <<= s; - s = 1; if (x << 1 == 0) s = 0; b -= s; - - return b; -} - -static unsigned long (* get_int_status)(void); - -static unsigned long get_int_status_100(void) -{ - return *lasat_int_status & *lasat_int_mask; -} - -static unsigned long get_int_status_200(void) -{ - unsigned long int_status; - - int_status = *lasat_int_status; - int_status &= (int_status >> LASATINT_MASK_SHIFT_200) & 0xffff; - return int_status; -} - -asmlinkage void plat_irq_dispatch(void) -{ - unsigned long int_status; - unsigned int cause = read_c0_cause(); - int irq; - - if (cause & CAUSEF_IP7) { /* R4000 count / compare IRQ */ - ll_timer_interrupt(7); - return; - } - - int_status = get_int_status(); - - /* if int_status == 0, then the interrupt has already been cleared */ - if (int_status) { - irq = ls1bit32(int_status); - - do_IRQ(irq); - } -} - -void __init arch_init_irq(void) -{ - int i; - - switch (mips_machtype) { - case MACH_LASAT_100: - lasat_int_status = (void *)LASAT_INT_STATUS_REG_100; - lasat_int_mask = (void *)LASAT_INT_MASK_REG_100; - lasat_int_mask_shift = LASATINT_MASK_SHIFT_100; - get_int_status = get_int_status_100; - *lasat_int_mask = 0; - break; - case MACH_LASAT_200: - lasat_int_status = (void *)LASAT_INT_STATUS_REG_200; - lasat_int_mask = (void *)LASAT_INT_MASK_REG_200; - lasat_int_mask_shift = LASATINT_MASK_SHIFT_200; - get_int_status = get_int_status_200; - *lasat_int_mask &= 0xffff; - break; - default: - panic("arch_init_irq: mips_machtype incorrect"); - } - - for (i = 0; i <= LASATINT_END; i++) - set_irq_chip_and_handler(i, &lasat_irq_type, handle_level_irq); -} |