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Diffstat (limited to 'arch/ppc/syslib/ppc403_pic.c')
-rw-r--r--arch/ppc/syslib/ppc403_pic.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/ppc/syslib/ppc403_pic.c b/arch/ppc/syslib/ppc403_pic.c
deleted file mode 100644
index c3b7b8bfbcf..00000000000
--- a/arch/ppc/syslib/ppc403_pic.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- *
- * Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
- *
- * Module name: ppc403_pic.c
- *
- * Description:
- * Interrupt controller driver for PowerPC 403-based processors.
- */
-
-/*
- * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has
- * 32 possible interrupts, a majority of which are not implemented on
- * all cores. There are six configurable, external interrupt pins and
- * there are eight internal interrupts for the on-chip serial port
- * (SPU), DMA controller, and JTAG controller.
- *
- */
-
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/stddef.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/ppc4xx_pic.h>
-#include <asm/machdep.h>
-
-/* Function Prototypes */
-
-static void ppc403_aic_enable(unsigned int irq);
-static void ppc403_aic_disable(unsigned int irq);
-static void ppc403_aic_disable_and_ack(unsigned int irq);
-
-static struct hw_interrupt_type ppc403_aic = {
- .typename = "403GC AIC",
- .enable = ppc403_aic_enable,
- .disable = ppc403_aic_disable,
- .ack = ppc403_aic_disable_and_ack,
-};
-
-int
-ppc403_pic_get_irq(void)
-{
- int irq;
- unsigned long bits;
-
- /*
- * Only report the status of those interrupts that are actually
- * enabled.
- */
-
- bits = mfdcr(DCRN_EXISR) & mfdcr(DCRN_EXIER);
-
- /*
- * Walk through the interrupts from highest priority to lowest, and
- * report the first pending interrupt found.
- * We want PPC, not C bit numbering, so just subtract the ffs()
- * result from 32.
- */
- irq = 32 - ffs(bits);
-
- if (irq == NR_AIC_IRQS)
- irq = -1;
-
- return (irq);
-}
-
-static void
-ppc403_aic_enable(unsigned int irq)
-{
- int bit, word;
-
- bit = irq & 0x1f;
- word = irq >> 5;
-
- ppc_cached_irq_mask[word] |= (1 << (31 - bit));
- mtdcr(DCRN_EXIER, ppc_cached_irq_mask[word]);
-}
-
-static void
-ppc403_aic_disable(unsigned int irq)
-{
- int bit, word;
-
- bit = irq & 0x1f;
- word = irq >> 5;
-
- ppc_cached_irq_mask[word] &= ~(1 << (31 - bit));
- mtdcr(DCRN_EXIER, ppc_cached_irq_mask[word]);
-}
-
-static void
-ppc403_aic_disable_and_ack(unsigned int irq)
-{
- int bit, word;
-
- bit = irq & 0x1f;
- word = irq >> 5;
-
- ppc_cached_irq_mask[word] &= ~(1 << (31 - bit));
- mtdcr(DCRN_EXIER, ppc_cached_irq_mask[word]);
- mtdcr(DCRN_EXISR, (1 << (31 - bit)));
-}
-
-void __init
-ppc4xx_pic_init(void)
-{
- int i;
-
- /*
- * Disable all external interrupts until they are
- * explicitly requested.
- */
- ppc_cached_irq_mask[0] = 0;
-
- mtdcr(DCRN_EXIER, ppc_cached_irq_mask[0]);
-
- ppc_md.get_irq = ppc403_pic_get_irq;
-
- for (i = 0; i < NR_IRQS; i++)
- irq_desc[i].chip = &ppc403_aic;
-}