MIPS: Remove support for LASAT

[sfrench/cifs-2.6.git] / arch / mips / lasat / interrupt.c

diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
deleted file mode 100644 (file)
index 7965bbd..0000000
--- a/arch/mips/lasat/interrupt.c
+++ /dev/null
@@ -1,119 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Carsten Langgaard, carstenl@mips.com
- * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
- *
- * Routines for generic manipulation of the interrupts found on the
- * Lasat boards.
- */
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-
-#include <asm/irq_cpu.h>
-#include <asm/lasat/lasat.h>
-#include <asm/lasat/lasatint.h>
-
-#include <irq.h>
-
-static volatile int *lasat_int_status;
-static volatile int *lasat_int_mask;
-static volatile int lasat_int_mask_shift;
-
-void disable_lasat_irq(struct irq_data *d)
-{
-       unsigned int irq_nr = d->irq - LASAT_IRQ_BASE;
-
-       *lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift;
-}
-
-void enable_lasat_irq(struct irq_data *d)
-{
-       unsigned int irq_nr = d->irq - LASAT_IRQ_BASE;
-
-       *lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift;
-}
-
-static struct irq_chip lasat_irq_type = {
-       .name = "Lasat",
-       .irq_mask = disable_lasat_irq,
-       .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 */
-               do_IRQ(7);
-               return;
-       }
-
-       int_status = get_int_status();
-
-       /* if int_status == 0, then the interrupt has already been cleared */
-       if (int_status) {
-               irq = LASAT_IRQ_BASE + ls1bit32(int_status);
-
-               do_IRQ(irq);
-       }
-}
-
-void __init arch_init_irq(void)
-{
-       int irq = LASAT_CASCADE_IRQ;
-       int i;
-
-       if (IS_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;
-       } else {
-               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;
-       }
-
-       mips_cpu_irq_init();
-
-       for (i = LASAT_IRQ_BASE; i <= LASAT_IRQ_END; i++)
-               irq_set_chip_and_handler(i, &lasat_irq_type, handle_level_irq);
-
-       if (request_irq(irq, no_action, IRQF_NO_THREAD, "cascade", NULL))
-               pr_err("Failed to request irq %d (cascade)\n", irq);
-}