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Diffstat (limited to 'arch/mips/alchemy/common/irq.c')
-rw-r--r--arch/mips/alchemy/common/irq.c596
1 files changed, 596 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
new file mode 100644
index 000000000000..40c6ceceb5f9
--- /dev/null
+++ b/arch/mips/alchemy/common/irq.c
@@ -0,0 +1,596 @@
+/*
+ * Copyright 2001, 2007-2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * 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/bitops.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+#include <asm/mach-au1x00/au1000.h>
+#ifdef CONFIG_MIPS_PB1000
+#include <asm/mach-pb1x00/pb1000.h>
+#endif
+
+#define EXT_INTC0_REQ0 2 /* IP 2 */
+#define EXT_INTC0_REQ1 3 /* IP 3 */
+#define EXT_INTC1_REQ0 4 /* IP 4 */
+#define EXT_INTC1_REQ1 5 /* IP 5 */
+#define MIPS_TIMER_IP 7 /* IP 7 */
+
+void (*board_init_irq)(void) __initdata = NULL;
+
+static DEFINE_SPINLOCK(irq_lock);
+
+#ifdef CONFIG_PM
+
+/*
+ * Save/restore the interrupt controller state.
+ * Called from the save/restore core registers as part of the
+ * au_sleep function in power.c.....maybe I should just pm_register()
+ * them instead?
+ */
+static unsigned int sleep_intctl_config0[2];
+static unsigned int sleep_intctl_config1[2];
+static unsigned int sleep_intctl_config2[2];
+static unsigned int sleep_intctl_src[2];
+static unsigned int sleep_intctl_assign[2];
+static unsigned int sleep_intctl_wake[2];
+static unsigned int sleep_intctl_mask[2];
+
+void save_au1xxx_intctl(void)
+{
+ sleep_intctl_config0[0] = au_readl(IC0_CFG0RD);
+ sleep_intctl_config1[0] = au_readl(IC0_CFG1RD);
+ sleep_intctl_config2[0] = au_readl(IC0_CFG2RD);
+ sleep_intctl_src[0] = au_readl(IC0_SRCRD);
+ sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD);
+ sleep_intctl_wake[0] = au_readl(IC0_WAKERD);
+ sleep_intctl_mask[0] = au_readl(IC0_MASKRD);
+
+ sleep_intctl_config0[1] = au_readl(IC1_CFG0RD);
+ sleep_intctl_config1[1] = au_readl(IC1_CFG1RD);
+ sleep_intctl_config2[1] = au_readl(IC1_CFG2RD);
+ sleep_intctl_src[1] = au_readl(IC1_SRCRD);
+ sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD);
+ sleep_intctl_wake[1] = au_readl(IC1_WAKERD);
+ sleep_intctl_mask[1] = au_readl(IC1_MASKRD);
+}
+
+/*
+ * For most restore operations, we clear the entire register and
+ * then set the bits we found during the save.
+ */
+void restore_au1xxx_intctl(void)
+{
+ au_writel(0xffffffff, IC0_MASKCLR); au_sync();
+
+ au_writel(0xffffffff, IC0_CFG0CLR); au_sync();
+ au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync();
+ au_writel(0xffffffff, IC0_CFG1CLR); au_sync();
+ au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync();
+ au_writel(0xffffffff, IC0_CFG2CLR); au_sync();
+ au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync();
+ au_writel(0xffffffff, IC0_SRCCLR); au_sync();
+ au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync();
+ au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync();
+ au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync();
+ au_writel(0xffffffff, IC0_WAKECLR); au_sync();
+ au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync();
+ au_writel(0xffffffff, IC0_RISINGCLR); au_sync();
+ au_writel(0xffffffff, IC0_FALLINGCLR); au_sync();
+ au_writel(0x00000000, IC0_TESTBIT); au_sync();
+
+ au_writel(0xffffffff, IC1_MASKCLR); au_sync();
+
+ au_writel(0xffffffff, IC1_CFG0CLR); au_sync();
+ au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync();
+ au_writel(0xffffffff, IC1_CFG1CLR); au_sync();
+ au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync();
+ au_writel(0xffffffff, IC1_CFG2CLR); au_sync();
+ au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync();
+ au_writel(0xffffffff, IC1_SRCCLR); au_sync();
+ au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync();
+ au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync();
+ au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync();
+ au_writel(0xffffffff, IC1_WAKECLR); au_sync();
+ au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync();
+ au_writel(0xffffffff, IC1_RISINGCLR); au_sync();
+ au_writel(0xffffffff, IC1_FALLINGCLR); au_sync();
+ au_writel(0x00000000, IC1_TESTBIT); au_sync();
+
+ au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync();
+
+ au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
+}
+#endif /* CONFIG_PM */
+
+
+inline void local_enable_irq(unsigned int irq_nr)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_MASKSET);
+ au_writel(1 << (bit - 32), IC1_WAKESET);
+ } else {
+ au_writel(1 << bit, IC0_MASKSET);
+ au_writel(1 << bit, IC0_WAKESET);
+ }
+ au_sync();
+}
+
+
+inline void local_disable_irq(unsigned int irq_nr)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ au_writel(1 << (bit - 32), IC1_WAKECLR);
+ } else {
+ au_writel(1 << bit, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_WAKECLR);
+ }
+ au_sync();
+}
+
+
+static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_RISINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ } else {
+ au_writel(1 << bit, IC0_RISINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
+ }
+ au_sync();
+}
+
+
+static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ } else {
+ au_writel(1 << bit, IC0_FALLINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
+ }
+ au_sync();
+}
+
+
+static inline void mask_and_ack_either_edge_irq(unsigned int irq_nr)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ /*
+ * This may assume that we don't get interrupts from
+ * both edges at once, or if we do, that we don't care.
+ */
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+ au_writel(1 << (bit - 32), IC1_RISINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ } else {
+ au_writel(1 << bit, IC0_FALLINGCLR);
+ au_writel(1 << bit, IC0_RISINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
+ }
+ au_sync();
+}
+
+static inline void mask_and_ack_level_irq(unsigned int irq_nr)
+{
+ local_disable_irq(irq_nr);
+ au_sync();
+#if defined(CONFIG_MIPS_PB1000)
+ if (irq_nr == AU1000_GPIO_15) {
+ au_writel(0x8000, PB1000_MDR); /* ack int */
+ au_sync();
+ }
+#endif
+}
+
+static void end_irq(unsigned int irq_nr)
+{
+ if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+ local_enable_irq(irq_nr);
+
+#if defined(CONFIG_MIPS_PB1000)
+ if (irq_nr == AU1000_GPIO_15) {
+ au_writel(0x4000, PB1000_MDR); /* enable int */
+ au_sync();
+ }
+#endif
+}
+
+unsigned long save_local_and_disable(int controller)
+{
+ int i;
+ unsigned long flags, mask;
+
+ spin_lock_irqsave(&irq_lock, flags);
+ if (controller) {
+ mask = au_readl(IC1_MASKSET);
+ for (i = 32; i < 64; i++)
+ local_disable_irq(i);
+ } else {
+ mask = au_readl(IC0_MASKSET);
+ for (i = 0; i < 32; i++)
+ local_disable_irq(i);
+ }
+ spin_unlock_irqrestore(&irq_lock, flags);
+
+ return mask;
+}
+
+void restore_local_and_enable(int controller, unsigned long mask)
+{
+ int i;
+ unsigned long flags, new_mask;
+
+ spin_lock_irqsave(&irq_lock, flags);
+ for (i = 0; i < 32; i++)
+ if (mask & (1 << i)) {
+ if (controller)
+ local_enable_irq(i + 32);
+ else
+ local_enable_irq(i);
+ }
+
+ if (controller)
+ new_mask = au_readl(IC1_MASKSET);
+ else
+ new_mask = au_readl(IC0_MASKSET);
+
+ spin_unlock_irqrestore(&irq_lock, flags);
+}
+
+
+static struct irq_chip rise_edge_irq_type = {
+ .name = "Au1000 Rise Edge",
+ .ack = mask_and_ack_rise_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_rise_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
+};
+
+static struct irq_chip fall_edge_irq_type = {
+ .name = "Au1000 Fall Edge",
+ .ack = mask_and_ack_fall_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_fall_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
+};
+
+static struct irq_chip either_edge_irq_type = {
+ .name = "Au1000 Rise or Fall Edge",
+ .ack = mask_and_ack_either_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_either_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
+};
+
+static struct irq_chip level_irq_type = {
+ .name = "Au1000 Level",
+ .ack = mask_and_ack_level_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_level_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
+};
+
+static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
+{
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (irq_nr > AU1000_MAX_INTR)
+ return;
+
+ /* Config2[n], Config1[n], Config0[n] */
+ if (bit >= 32) {
+ switch (type) {
+ case INTC_INT_RISE_EDGE: /* 0:0:1 */
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
+ set_irq_chip(irq_nr, &rise_edge_irq_type);
+ break;
+ case INTC_INT_FALL_EDGE: /* 0:1:0 */
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ set_irq_chip(irq_nr, &fall_edge_irq_type);
+ break;
+ case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
+ set_irq_chip(irq_nr, &either_edge_irq_type);
+ break;
+ case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
+ au_writel(1 << (bit - 32), IC1_CFG2SET);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
+ set_irq_chip(irq_nr, &level_irq_type);
+ break;
+ case INTC_INT_LOW_LEVEL: /* 1:1:0 */
+ au_writel(1 << (bit - 32), IC1_CFG2SET);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ set_irq_chip(irq_nr, &level_irq_type);
+ break;
+ case INTC_INT_DISABLED: /* 0:0:0 */
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ break;
+ default: /* disable the interrupt */
+ printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
+ type, irq_nr);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ return;
+ }
+ if (int_req) /* assign to interrupt request 1 */
+ au_writel(1 << (bit - 32), IC1_ASSIGNCLR);
+ else /* assign to interrupt request 0 */
+ au_writel(1 << (bit - 32), IC1_ASSIGNSET);
+ au_writel(1 << (bit - 32), IC1_SRCSET);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ au_writel(1 << (bit - 32), IC1_WAKECLR);
+ } else {
+ switch (type) {
+ case INTC_INT_RISE_EDGE: /* 0:0:1 */
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG0SET);
+ set_irq_chip(irq_nr, &rise_edge_irq_type);
+ break;
+ case INTC_INT_FALL_EDGE: /* 0:1:0 */
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0CLR);
+ set_irq_chip(irq_nr, &fall_edge_irq_type);
+ break;
+ case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0SET);
+ set_irq_chip(irq_nr, &either_edge_irq_type);
+ break;
+ case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
+ au_writel(1 << bit, IC0_CFG2SET);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG0SET);
+ set_irq_chip(irq_nr, &level_irq_type);
+ break;
+ case INTC_INT_LOW_LEVEL: /* 1:1:0 */
+ au_writel(1 << bit, IC0_CFG2SET);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0CLR);
+ set_irq_chip(irq_nr, &level_irq_type);
+ break;
+ case INTC_INT_DISABLED: /* 0:0:0 */
+ au_writel(1 << bit, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG2CLR);
+ break;
+ default: /* disable the interrupt */
+ printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
+ type, irq_nr);
+ au_writel(1 << bit, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG2CLR);
+ return;
+ }
+ if (int_req) /* assign to interrupt request 1 */
+ au_writel(1 << bit, IC0_ASSIGNCLR);
+ else /* assign to interrupt request 0 */
+ au_writel(1 << bit, IC0_ASSIGNSET);
+ au_writel(1 << bit, IC0_SRCSET);
+ au_writel(1 << bit, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_WAKECLR);
+ }
+ au_sync();
+}
+
+/*
+ * Interrupts are nested. Even if an interrupt handler is registered
+ * as "fast", we might get another interrupt before we return from
+ * intcX_reqX_irqdispatch().
+ */
+
+static void intc0_req0_irqdispatch(void)
+{
+ static unsigned long intc0_req0;
+ unsigned int bit;
+
+ intc0_req0 |= au_readl(IC0_REQ0INT);
+
+ if (!intc0_req0)
+ return;
+
+#ifdef AU1000_USB_DEV_REQ_INT
+ /*
+ * Because of the tight timing of SETUP token to reply
+ * transactions, the USB devices-side packet complete
+ * interrupt needs the highest priority.
+ */
+ if ((intc0_req0 & (1 << AU1000_USB_DEV_REQ_INT))) {
+ intc0_req0 &= ~(1 << AU1000_USB_DEV_REQ_INT);
+ do_IRQ(AU1000_USB_DEV_REQ_INT);
+ return;
+ }
+#endif
+ bit = __ffs(intc0_req0);
+ intc0_req0 &= ~(1 << bit);
+ do_IRQ(AU1000_INTC0_INT_BASE + bit);
+}
+
+
+static void intc0_req1_irqdispatch(void)
+{
+ static unsigned long intc0_req1;
+ unsigned int bit;
+
+ intc0_req1 |= au_readl(IC0_REQ1INT);
+
+ if (!intc0_req1)
+ return;
+
+ bit = __ffs(intc0_req1);
+ intc0_req1 &= ~(1 << bit);
+ do_IRQ(AU1000_INTC0_INT_BASE + bit);
+}
+
+
+/*
+ * Interrupt Controller 1:
+ * interrupts 32 - 63
+ */
+static void intc1_req0_irqdispatch(void)
+{
+ static unsigned long intc1_req0;
+ unsigned int bit;
+
+ intc1_req0 |= au_readl(IC1_REQ0INT);
+
+ if (!intc1_req0)
+ return;
+
+ bit = __ffs(intc1_req0);
+ intc1_req0 &= ~(1 << bit);
+ do_IRQ(AU1000_INTC1_INT_BASE + bit);
+}
+
+
+static void intc1_req1_irqdispatch(void)
+{
+ static unsigned long intc1_req1;
+ unsigned int bit;
+
+ intc1_req1 |= au_readl(IC1_REQ1INT);
+
+ if (!intc1_req1)
+ return;
+
+ bit = __ffs(intc1_req1);
+ intc1_req1 &= ~(1 << bit);
+ do_IRQ(AU1000_INTC1_INT_BASE + bit);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+ unsigned int pending = read_c0_status() & read_c0_cause();
+
+ if (pending & CAUSEF_IP7)
+ do_IRQ(MIPS_CPU_IRQ_BASE + 7);
+ else if (pending & CAUSEF_IP2)
+ intc0_req0_irqdispatch();
+ else if (pending & CAUSEF_IP3)
+ intc0_req1_irqdispatch();
+ else if (pending & CAUSEF_IP4)
+ intc1_req0_irqdispatch();
+ else if (pending & CAUSEF_IP5)
+ intc1_req1_irqdispatch();
+ else
+ spurious_interrupt();
+}
+
+void __init arch_init_irq(void)
+{
+ int i;
+ struct au1xxx_irqmap *imp;
+ extern struct au1xxx_irqmap au1xxx_irq_map[];
+ extern struct au1xxx_irqmap au1xxx_ic0_map[];
+ extern int au1xxx_nr_irqs;
+ extern int au1xxx_ic0_nr_irqs;
+
+ /*
+ * Initialize interrupt controllers to a safe state.
+ */
+ au_writel(0xffffffff, IC0_CFG0CLR);
+ au_writel(0xffffffff, IC0_CFG1CLR);
+ au_writel(0xffffffff, IC0_CFG2CLR);
+ au_writel(0xffffffff, IC0_MASKCLR);
+ au_writel(0xffffffff, IC0_ASSIGNSET);
+ au_writel(0xffffffff, IC0_WAKECLR);
+ au_writel(0xffffffff, IC0_SRCSET);
+ au_writel(0xffffffff, IC0_FALLINGCLR);
+ au_writel(0xffffffff, IC0_RISINGCLR);
+ au_writel(0x00000000, IC0_TESTBIT);
+
+ au_writel(0xffffffff, IC1_CFG0CLR);
+ au_writel(0xffffffff, IC1_CFG1CLR);
+ au_writel(0xffffffff, IC1_CFG2CLR);
+ au_writel(0xffffffff, IC1_MASKCLR);
+ au_writel(0xffffffff, IC1_ASSIGNSET);
+ au_writel(0xffffffff, IC1_WAKECLR);
+ au_writel(0xffffffff, IC1_SRCSET);
+ au_writel(0xffffffff, IC1_FALLINGCLR);
+ au_writel(0xffffffff, IC1_RISINGCLR);
+ au_writel(0x00000000, IC1_TESTBIT);
+
+ mips_cpu_irq_init();
+
+ /*
+ * Initialize IC0, which is fixed per processor.
+ */
+ imp = au1xxx_ic0_map;
+ for (i = 0; i < au1xxx_ic0_nr_irqs; i++) {
+ setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
+ imp++;
+ }
+
+ /*
+ * Now set up the irq mapping for the board.
+ */
+ imp = au1xxx_irq_map;
+ for (i = 0; i < au1xxx_nr_irqs; i++) {
+ setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
+ imp++;
+ }
+
+ set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
+
+ /* Board specific IRQ initialization.
+ */
+ if (board_init_irq)
+ board_init_irq();
+}