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Diffstat (limited to 'arch/ppc/amiga/cia.c')
-rw-r--r--arch/ppc/amiga/cia.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/arch/ppc/amiga/cia.c b/arch/ppc/amiga/cia.c
deleted file mode 100644
index 9558f2f40e6..00000000000
--- a/arch/ppc/amiga/cia.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (C) 1996 Roman Zippel
- *
- * The concept of some functions bases on the original Amiga OS function
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kernel_stat.h>
-#include <linux/init.h>
-
-#include <asm/irq.h>
-#include <asm/amigahw.h>
-#include <asm/amigaints.h>
-
-struct ciabase {
- volatile struct CIA *cia;
- u_char icr_mask, icr_data;
- u_short int_mask;
- int handler_irq, cia_irq, server_irq;
- char *name;
-} ciaa_base = {
- &ciaa, 0, 0, IF_PORTS,
- IRQ_AMIGA_AUTO_2, IRQ_AMIGA_CIAA,
- IRQ_AMIGA_PORTS,
- "CIAA handler"
-}, ciab_base = {
- &ciab, 0, 0, IF_EXTER,
- IRQ_AMIGA_AUTO_6, IRQ_AMIGA_CIAB,
- IRQ_AMIGA_EXTER,
- "CIAB handler"
-};
-
-#define CIA_SET_BASE_ADJUST_IRQ(base, irq) \
-do { \
- if (irq >= IRQ_AMIGA_CIAB) { \
- base = &ciab_base; \
- irq -= IRQ_AMIGA_CIAB; \
- } else { \
- base = &ciaa_base; \
- irq -= IRQ_AMIGA_CIAA; \
- } \
-} while (0)
-
-/*
- * Cause or clear CIA interrupts, return old interrupt status.
- */
-
-static unsigned char cia_set_irq_private(struct ciabase *base,
- unsigned char mask)
-{
- u_char old;
-
- old = (base->icr_data |= base->cia->icr);
- if (mask & CIA_ICR_SETCLR)
- base->icr_data |= mask;
- else
- base->icr_data &= ~mask;
- if (base->icr_data & base->icr_mask)
- amiga_custom.intreq = IF_SETCLR | base->int_mask;
- return old & base->icr_mask;
-}
-
-unsigned char cia_set_irq(unsigned int irq, int set)
-{
- struct ciabase *base;
- unsigned char mask;
-
- if (irq >= IRQ_AMIGA_CIAB)
- mask = (1 << (irq - IRQ_AMIGA_CIAB));
- else
- mask = (1 << (irq - IRQ_AMIGA_CIAA));
- mask |= (set) ? CIA_ICR_SETCLR : 0;
-
- CIA_SET_BASE_ADJUST_IRQ(base, irq);
-
- return cia_set_irq_private(base, mask);
-}
-
-unsigned char cia_get_irq_mask(unsigned int irq)
-{
- struct ciabase *base;
-
- CIA_SET_BASE_ADJUST_IRQ(base, irq);
-
- return base->cia->icr;
-}
-
-/*
- * Enable or disable CIA interrupts, return old interrupt mask.
- */
-
-static unsigned char cia_able_irq_private(struct ciabase *base,
- unsigned char mask)
-{
- u_char old;
-
- old = base->icr_mask;
- base->icr_data |= base->cia->icr;
- base->cia->icr = mask;
- if (mask & CIA_ICR_SETCLR)
- base->icr_mask |= mask;
- else
- base->icr_mask &= ~mask;
- base->icr_mask &= CIA_ICR_ALL;
-
- if (base->icr_data & base->icr_mask)
- amiga_custom.intreq = IF_SETCLR | base->int_mask;
- return old;
-}
-
-unsigned char cia_able_irq(unsigned int irq, int enable)
-{
- struct ciabase *base;
- unsigned char mask;
-
- if (irq >= IRQ_AMIGA_CIAB)
- mask = (1 << (irq - IRQ_AMIGA_CIAB));
- else
- mask = (1 << (irq - IRQ_AMIGA_CIAA));
- mask |= (enable) ? CIA_ICR_SETCLR : 0;
-
- CIA_SET_BASE_ADJUST_IRQ(base, irq);
-
- return cia_able_irq_private(base, mask);
-}
-
-static void cia_handler(int irq, void *dev_id, struct pt_regs *fp)
-{
- struct ciabase *base = (struct ciabase *)dev_id;
- irq_desc_t *desc;
- struct irqaction *action;
- int i;
- unsigned char ints;
-
- irq = base->cia_irq;
- desc = irq_desc + irq;
- ints = cia_set_irq_private(base, CIA_ICR_ALL);
- amiga_custom.intreq = base->int_mask;
- for (i = 0; i < CIA_IRQS; i++, irq++) {
- if (ints & 1) {
- kstat_cpu(0).irqs[irq]++;
- action = desc->action;
- action->handler(irq, action->dev_id, fp);
- }
- ints >>= 1;
- desc++;
- }
- amiga_do_irq_list(base->server_irq, fp);
-}
-
-void __init cia_init_IRQ(struct ciabase *base)
-{
- extern struct irqaction amiga_sys_irqaction[AUTO_IRQS];
- struct irqaction *action;
-
- /* clear any pending interrupt and turn off all interrupts */
- cia_set_irq_private(base, CIA_ICR_ALL);
- cia_able_irq_private(base, CIA_ICR_ALL);
-
- /* install CIA handler */
- action = &amiga_sys_irqaction[base->handler_irq-IRQ_AMIGA_AUTO];
- action->handler = cia_handler;
- action->dev_id = base;
- action->name = base->name;
- setup_irq(base->handler_irq, &amiga_sys_irqaction[base->handler_irq-IRQ_AMIGA_AUTO]);
-
- amiga_custom.intena = IF_SETCLR | base->int_mask;
-}