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-rw-r--r--arch/frv/kernel/irq-mb93091.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/frv/kernel/irq-mb93091.c b/arch/frv/kernel/irq-mb93091.c
deleted file mode 100644
index 091b2839be90..000000000000
--- a/arch/frv/kernel/irq-mb93091.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* irq-mb93091.c: MB93091 FPGA interrupt handling
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.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.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-
-#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR))
-
-#define __get_IMR() ({ __reg16(0xffc00004); })
-#define __set_IMR(M) do { __reg16(0xffc00004) = (M); wmb(); } while(0)
-#define __get_IFR() ({ __reg16(0xffc0000c); })
-#define __clr_IFR(M) do { __reg16(0xffc0000c) = ~(M); wmb(); } while(0)
-
-
-/*
- * on-motherboard FPGA PIC operations
- */
-static void frv_fpga_mask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
-
- __set_IMR(imr);
-}
-
-static void frv_fpga_ack(struct irq_data *d)
-{
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_mask_ack(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
- __set_IMR(imr);
-
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_unmask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr &= ~(1 << (d->irq - IRQ_BASE_FPGA));
-
- __set_IMR(imr);
-}
-
-static struct irq_chip frv_fpga_pic = {
- .name = "mb93091",
- .irq_ack = frv_fpga_ack,
- .irq_mask = frv_fpga_mask,
- .irq_mask_ack = frv_fpga_mask_ack,
- .irq_unmask = frv_fpga_unmask,
-};
-
-/*
- * FPGA PIC interrupt handler
- */
-static irqreturn_t fpga_interrupt(int irq, void *_mask)
-{
- uint16_t imr, mask = (unsigned long) _mask;
-
- imr = __get_IMR();
- mask = mask & ~imr & __get_IFR();
-
- /* poll all the triggered IRQs */
- while (mask) {
- int irq;
-
- asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask));
- irq = 31 - irq;
- mask &= ~(1 << irq);
-
- generic_handle_irq(IRQ_BASE_FPGA + irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * define an interrupt action for each FPGA PIC output
- * - use dev_id to indicate the FPGA PIC input to output mappings
- */
-static struct irqaction fpga_irq[4] = {
- [0] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.0",
- .dev_id = (void *) 0x0028UL,
- },
- [1] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.1",
- .dev_id = (void *) 0x0050UL,
- },
- [2] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.2",
- .dev_id = (void *) 0x1c00UL,
- },
- [3] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.3",
- .dev_id = (void *) 0x6386UL,
- }
-};
-
-/*
- * initialise the motherboard FPGA's PIC
- */
-void __init fpga_init(void)
-{
- int irq;
-
- /* all PIC inputs are all set to be low-level driven, apart from the
- * NMI button (15) which is fixed at falling-edge
- */
- __set_IMR(0x7ffe);
- __clr_IFR(0x0000);
-
- for (irq = IRQ_BASE_FPGA + 1; irq <= IRQ_BASE_FPGA + 14; irq++)
- irq_set_chip_and_handler(irq, &frv_fpga_pic, handle_level_irq);
-
- irq_set_chip_and_handler(IRQ_FPGA_NMI, &frv_fpga_pic, handle_edge_irq);
-
- /* the FPGA drives the first four external IRQ inputs on the CPU PIC */
- setup_irq(IRQ_CPU_EXTERNAL0, &fpga_irq[0]);
- setup_irq(IRQ_CPU_EXTERNAL1, &fpga_irq[1]);
- setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[2]);
- setup_irq(IRQ_CPU_EXTERNAL3, &fpga_irq[3]);
-}