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Diffstat (limited to 'arch/ppc/syslib/cpc700_pic.c')
-rw-r--r--arch/ppc/syslib/cpc700_pic.c181
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/ppc/syslib/cpc700_pic.c b/arch/ppc/syslib/cpc700_pic.c
deleted file mode 100644
index d48e8f45c05..00000000000
--- a/arch/ppc/syslib/cpc700_pic.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * Interrupt controller support for IBM Spruce
- *
- * Authors: Mark Greer, Matt Porter, and Johnnie Peters
- * mgreer@mvista.com
- * mporter@mvista.com
- * jpeters@mvista.com
- *
- * 2001-2002 (c) MontaVista, Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/irq.h>
-
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-
-#include "cpc700.h"
-
-static void
-cpc700_unmask_irq(unsigned int irq)
-{
- unsigned int tr_bits;
-
- /*
- * IRQ 31 is largest IRQ supported.
- * IRQs 17-19 are reserved.
- */
- if ((irq <= 31) && ((irq < 17) || (irq > 19))) {
- tr_bits = CPC700_IN_32(CPC700_UIC_UICTR);
-
- if ((tr_bits & (1 << (31 - irq))) == 0) {
- /* level trigger interrupt, clear bit in status
- * register */
- CPC700_OUT_32(CPC700_UIC_UICSR, 1 << (31 - irq));
- }
-
- /* Know IRQ fits in entry 0 of ppc_cached_irq_mask[] */
- ppc_cached_irq_mask[0] |= CPC700_UIC_IRQ_BIT(irq);
-
- CPC700_OUT_32(CPC700_UIC_UICER, ppc_cached_irq_mask[0]);
- }
- return;
-}
-
-static void
-cpc700_mask_irq(unsigned int irq)
-{
- /*
- * IRQ 31 is largest IRQ supported.
- * IRQs 17-19 are reserved.
- */
- if ((irq <= 31) && ((irq < 17) || (irq > 19))) {
- /* Know IRQ fits in entry 0 of ppc_cached_irq_mask[] */
- ppc_cached_irq_mask[0] &=
- ~CPC700_UIC_IRQ_BIT(irq);
-
- CPC700_OUT_32(CPC700_UIC_UICER, ppc_cached_irq_mask[0]);
- }
- return;
-}
-
-static void
-cpc700_mask_and_ack_irq(unsigned int irq)
-{
- u_int bit;
-
- /*
- * IRQ 31 is largest IRQ supported.
- * IRQs 17-19 are reserved.
- */
- if ((irq <= 31) && ((irq < 17) || (irq > 19))) {
- /* Know IRQ fits in entry 0 of ppc_cached_irq_mask[] */
- bit = CPC700_UIC_IRQ_BIT(irq);
-
- ppc_cached_irq_mask[0] &= ~bit;
- CPC700_OUT_32(CPC700_UIC_UICER, ppc_cached_irq_mask[0]);
- CPC700_OUT_32(CPC700_UIC_UICSR, bit); /* Write 1 clears IRQ */
- }
- return;
-}
-
-static struct hw_interrupt_type cpc700_pic = {
- .typename = "CPC700 PIC",
- .enable = cpc700_unmask_irq,
- .disable = cpc700_mask_irq,
- .ack = cpc700_mask_and_ack_irq,
-};
-
-__init static void
-cpc700_pic_init_irq(unsigned int irq)
-{
- unsigned int tmp;
-
- /* Set interrupt sense */
- tmp = CPC700_IN_32(CPC700_UIC_UICTR);
- if (cpc700_irq_assigns[irq][0] == 0) {
- tmp &= ~CPC700_UIC_IRQ_BIT(irq);
- } else {
- tmp |= CPC700_UIC_IRQ_BIT(irq);
- }
- CPC700_OUT_32(CPC700_UIC_UICTR, tmp);
-
- /* Set interrupt polarity */
- tmp = CPC700_IN_32(CPC700_UIC_UICPR);
- if (cpc700_irq_assigns[irq][1]) {
- tmp |= CPC700_UIC_IRQ_BIT(irq);
- } else {
- tmp &= ~CPC700_UIC_IRQ_BIT(irq);
- }
- CPC700_OUT_32(CPC700_UIC_UICPR, tmp);
-
- /* Set interrupt critical */
- tmp = CPC700_IN_32(CPC700_UIC_UICCR);
- tmp |= CPC700_UIC_IRQ_BIT(irq);
- CPC700_OUT_32(CPC700_UIC_UICCR, tmp);
-
- return;
-}
-
-__init void
-cpc700_init_IRQ(void)
-{
- int i;
-
- ppc_cached_irq_mask[0] = 0;
- CPC700_OUT_32(CPC700_UIC_UICER, 0x00000000); /* Disable all irq's */
- CPC700_OUT_32(CPC700_UIC_UICSR, 0xffffffff); /* Clear cur intrs */
- CPC700_OUT_32(CPC700_UIC_UICCR, 0xffffffff); /* Gen INT not MCP */
- CPC700_OUT_32(CPC700_UIC_UICPR, 0x00000000); /* Active low */
- CPC700_OUT_32(CPC700_UIC_UICTR, 0x00000000); /* Level Sensitive */
- CPC700_OUT_32(CPC700_UIC_UICVR, CPC700_UIC_UICVCR_0_HI);
- /* IRQ 0 is highest */
-
- for (i = 0; i < 17; i++) {
- irq_desc[i].chip = &cpc700_pic;
- cpc700_pic_init_irq(i);
- }
-
- for (i = 20; i < 32; i++) {
- irq_desc[i].chip = &cpc700_pic;
- cpc700_pic_init_irq(i);
- }
-
- return;
-}
-
-
-
-/*
- * Find the highest IRQ that generating an interrupt, if any.
- */
-int
-cpc700_get_irq(void)
-{
- int irq = 0;
- u_int irq_status, irq_test = 1;
-
- irq_status = CPC700_IN_32(CPC700_UIC_UICMSR);
-
- do
- {
- if (irq_status & irq_test)
- break;
- irq++;
- irq_test <<= 1;
- } while (irq < NR_IRQS);
-
-
- if (irq == NR_IRQS)
- irq = 33;
-
- return (31 - irq);
-}