aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/gt64120/ev64120/irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/gt64120/ev64120/irq.c')
-rw-r--r--arch/mips/gt64120/ev64120/irq.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/arch/mips/gt64120/ev64120/irq.c b/arch/mips/gt64120/ev64120/irq.c
deleted file mode 100644
index 64e4c80b613..00000000000
--- a/arch/mips/gt64120/ev64120/irq.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * BRIEF MODULE DESCRIPTION
- * Code to handle irqs on GT64120A boards
- * Derived from mips/orion and Cort <cort@fsmlabs.com>
- *
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author: RidgeRun, Inc.
- * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * 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.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/bitops.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/mipsregs.h>
-#include <asm/system.h>
-#include <asm/gt64120.h>
-
-asmlinkage void plat_irq_dispatch(void)
-{
- unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
-
- if (pending & STATUSF_IP4) /* int2 hardware line (timer) */
- do_IRQ(4);
- else if (pending & STATUSF_IP2) /* int0 hardware line */
- do_IRQ(GT_INTA);
- else if (pending & STATUSF_IP5) /* int3 hardware line */
- do_IRQ(GT_INTD);
- else if (pending & STATUSF_IP6) /* int4 hardware line */
- do_IRQ(6);
- else if (pending & STATUSF_IP7) /* compare int */
- do_IRQ(7);
- else
- spurious_interrupt();
-}
-
-static void disable_ev64120_irq(unsigned int irq_nr)
-{
- if (irq_nr >= 8) { // All PCI interrupts are on line 5 or 2
- clear_c0_status(9 << 10);
- } else {
- clear_c0_status(1 << (irq_nr + 8));
- }
-}
-
-static void enable_ev64120_irq(unsigned int irq_nr)
-{
- if (irq_nr >= 8) // All PCI interrupts are on line 5 or 2
- set_c0_status(9 << 10);
- else
- set_c0_status(1 << (irq_nr + 8));
-}
-
-static void end_ev64120_irq(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- enable_ev64120_irq(irq);
-}
-
-static struct irq_chip ev64120_irq_type = {
- .name = "EV64120",
- .ack = disable_ev64120_irq,
- .mask = disable_ev64120_irq,
- .mask_ack = disable_ev64120_irq,
- .unmask = enable_ev64120_irq,
- .end = end_ev64120_irq,
-};
-
-void gt64120_irq_setup(void)
-{
- /*
- * Clear all of the interrupts while we change the able around a bit.
- */
- clear_c0_status(ST0_IM);
-
- /*
- * Enable timer. Other interrupts will be enabled as they are
- * registered.
- */
- set_c0_status(IE_IRQ2);
-}
-
-void __init arch_init_irq(void)
-{
- gt64120_irq_setup();
-}