--- /dev/null
+/*
+ * icu.c, Interrupt Control Unit routines for the NEC VR4100 series.
+ *
+ * Copyright (C) 2001-2002 MontaVista Software Inc.
+ * Author: Yoichi Yuasa <source@mvista.com>
+ * Copyright (C) 2003-2006 Yoichi Yuasa <yuasa@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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * Changes:
+ * MontaVista Software Inc. <source@mvista.com>
+ * - New creation, NEC VR4122 and VR4131 are supported.
+ * - Added support for NEC VR4111 and VR4121.
+ *
+ * Yoichi Yuasa <yuasa@linux-mips.org>
+ * - Coped with INTASSIGN of NEC VR4133.
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/smp.h>
+#include <linux/types.h>
+
+#include <asm/cpu.h>
+#include <asm/io.h>
+#include <asm/vr41xx/irq.h>
+#include <asm/vr41xx/vr41xx.h>
+
+static void __iomem *icu1_base;
+static void __iomem *icu2_base;
+
+static unsigned char sysint1_assign[16] = {
+ 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+static unsigned char sysint2_assign[16] = {
+ 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+#define ICU1_TYPE1_BASE 0x0b000080UL
+#define ICU2_TYPE1_BASE 0x0b000200UL
+
+#define ICU1_TYPE2_BASE 0x0f000080UL
+#define ICU2_TYPE2_BASE 0x0f0000a0UL
+
+#define ICU1_SIZE 0x20
+#define ICU2_SIZE 0x1c
+
+#define SYSINT1REG 0x00
+#define PIUINTREG 0x02
+#define INTASSIGN0 0x04
+#define INTASSIGN1 0x06
+#define GIUINTLREG 0x08
+#define DSIUINTREG 0x0a
+#define MSYSINT1REG 0x0c
+#define MPIUINTREG 0x0e
+#define MAIUINTREG 0x10
+#define MKIUINTREG 0x12
+#define MMACINTREG 0x12
+#define MGIUINTLREG 0x14
+#define MDSIUINTREG 0x16
+#define NMIREG 0x18
+#define SOFTREG 0x1a
+#define INTASSIGN2 0x1c
+#define INTASSIGN3 0x1e
+
+#define SYSINT2REG 0x00
+#define GIUINTHREG 0x02
+#define FIRINTREG 0x04
+#define MSYSINT2REG 0x06
+#define MGIUINTHREG 0x08
+#define MFIRINTREG 0x0a
+#define PCIINTREG 0x0c
+ #define PCIINT0 0x0001
+#define SCUINTREG 0x0e
+ #define SCUINT0 0x0001
+#define CSIINTREG 0x10
+#define MPCIINTREG 0x12
+#define MSCUINTREG 0x14
+#define MCSIINTREG 0x16
+#define BCUINTREG 0x18
+ #define BCUINTR 0x0001
+#define MBCUINTREG 0x1a
+
+#define SYSINT1_IRQ_TO_PIN(x) ((x) - SYSINT1_IRQ_BASE) /* Pin 0-15 */
+#define SYSINT2_IRQ_TO_PIN(x) ((x) - SYSINT2_IRQ_BASE) /* Pin 0-15 */
+
+#define INT_TO_IRQ(x) ((x) + 2) /* Int0-4 -> IRQ2-6 */
+
+#define icu1_read(offset) readw(icu1_base + (offset))
+#define icu1_write(offset, value) writew((value), icu1_base + (offset))
+
+#define icu2_read(offset) readw(icu2_base + (offset))
+#define icu2_write(offset, value) writew((value), icu2_base + (offset))
+
+#define INTASSIGN_MAX 4
+#define INTASSIGN_MASK 0x0007
+
+static inline uint16_t icu1_set(uint8_t offset, uint16_t set)
+{
+ uint16_t data;
+
+ data = icu1_read(offset);
+ data |= set;
+ icu1_write(offset, data);
+
+ return data;
+}
+
+static inline uint16_t icu1_clear(uint8_t offset, uint16_t clear)
+{
+ uint16_t data;
+
+ data = icu1_read(offset);
+ data &= ~clear;
+ icu1_write(offset, data);
+
+ return data;
+}
+
+static inline uint16_t icu2_set(uint8_t offset, uint16_t set)
+{
+ uint16_t data;
+
+ data = icu2_read(offset);
+ data |= set;
+ icu2_write(offset, data);
+
+ return data;
+}
+
+static inline uint16_t icu2_clear(uint8_t offset, uint16_t clear)
+{
+ uint16_t data;
+
+ data = icu2_read(offset);
+ data &= ~clear;
+ icu2_write(offset, data);
+
+ return data;
+}
+
+void vr41xx_enable_piuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(PIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_set(MPIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_piuint);
+
+void vr41xx_disable_piuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(PIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_clear(MPIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_piuint);
+
+void vr41xx_enable_aiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(AIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_set(MAIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_aiuint);
+
+void vr41xx_disable_aiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(AIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_clear(MAIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_aiuint);
+
+void vr41xx_enable_kiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(KIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_set(MKIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_kiuint);
+
+void vr41xx_disable_kiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(KIU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4111 ||
+ current_cpu_type() == CPU_VR4121) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_clear(MKIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_kiuint);
+
+void vr41xx_enable_macint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(ETHERNET_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_set(MMACINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_enable_macint);
+
+void vr41xx_disable_macint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(ETHERNET_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_clear(MMACINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_disable_macint);
+
+void vr41xx_enable_dsiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(DSIU_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_set(MDSIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_enable_dsiuint);
+
+void vr41xx_disable_dsiuint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(DSIU_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu1_clear(MDSIUINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_disable_dsiuint);
+
+void vr41xx_enable_firint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(FIR_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_set(MFIRINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_enable_firint);
+
+void vr41xx_disable_firint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(FIR_IRQ);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_clear(MFIRINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+EXPORT_SYMBOL(vr41xx_disable_firint);
+
+void vr41xx_enable_pciint(void)
+{
+ struct irq_desc *desc = irq_to_desc(PCI_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MPCIINTREG, PCIINT0);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_pciint);
+
+void vr41xx_disable_pciint(void)
+{
+ struct irq_desc *desc = irq_to_desc(PCI_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MPCIINTREG, 0);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_pciint);
+
+void vr41xx_enable_scuint(void)
+{
+ struct irq_desc *desc = irq_to_desc(SCU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MSCUINTREG, SCUINT0);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_scuint);
+
+void vr41xx_disable_scuint(void)
+{
+ struct irq_desc *desc = irq_to_desc(SCU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MSCUINTREG, 0);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_scuint);
+
+void vr41xx_enable_csiint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(CSI_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_set(MCSIINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_csiint);
+
+void vr41xx_disable_csiint(uint16_t mask)
+{
+ struct irq_desc *desc = irq_to_desc(CSI_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_clear(MCSIINTREG, mask);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_csiint);
+
+void vr41xx_enable_bcuint(void)
+{
+ struct irq_desc *desc = irq_to_desc(BCU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MBCUINTREG, BCUINTR);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_enable_bcuint);
+
+void vr41xx_disable_bcuint(void)
+{
+ struct irq_desc *desc = irq_to_desc(BCU_IRQ);
+ unsigned long flags;
+
+ if (current_cpu_type() == CPU_VR4122 ||
+ current_cpu_type() == CPU_VR4131 ||
+ current_cpu_type() == CPU_VR4133) {
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ icu2_write(MBCUINTREG, 0);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+EXPORT_SYMBOL(vr41xx_disable_bcuint);
+
+static void disable_sysint1_irq(struct irq_data *d)
+{
+ icu1_clear(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(d->irq));
+}
+
+static void enable_sysint1_irq(struct irq_data *d)
+{
+ icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(d->irq));
+}
+
+static struct irq_chip sysint1_irq_type = {
+ .name = "SYSINT1",
+ .irq_mask = disable_sysint1_irq,
+ .irq_unmask = enable_sysint1_irq,
+};
+
+static void disable_sysint2_irq(struct irq_data *d)
+{
+ icu2_clear(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(d->irq));
+}
+
+static void enable_sysint2_irq(struct irq_data *d)
+{
+ icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(d->irq));
+}
+
+static struct irq_chip sysint2_irq_type = {
+ .name = "SYSINT2",
+ .irq_mask = disable_sysint2_irq,
+ .irq_unmask = enable_sysint2_irq,
+};
+
+static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+ uint16_t intassign0, intassign1;
+ unsigned int pin;
+
+ pin = SYSINT1_IRQ_TO_PIN(irq);
+
+ raw_spin_lock_irq(&desc->lock);
+
+ intassign0 = icu1_read(INTASSIGN0);
+ intassign1 = icu1_read(INTASSIGN1);
+
+ switch (pin) {
+ case 0:
+ intassign0 &= ~INTASSIGN_MASK;
+ intassign0 |= (uint16_t)assign;
+ break;
+ case 1:
+ intassign0 &= ~(INTASSIGN_MASK << 3);
+ intassign0 |= (uint16_t)assign << 3;
+ break;
+ case 2:
+ intassign0 &= ~(INTASSIGN_MASK << 6);
+ intassign0 |= (uint16_t)assign << 6;
+ break;
+ case 3:
+ intassign0 &= ~(INTASSIGN_MASK << 9);
+ intassign0 |= (uint16_t)assign << 9;
+ break;
+ case 8:
+ intassign0 &= ~(INTASSIGN_MASK << 12);
+ intassign0 |= (uint16_t)assign << 12;
+ break;
+ case 9:
+ intassign1 &= ~INTASSIGN_MASK;
+ intassign1 |= (uint16_t)assign;
+ break;
+ case 11:
+ intassign1 &= ~(INTASSIGN_MASK << 6);
+ intassign1 |= (uint16_t)assign << 6;
+ break;
+ case 12:
+ intassign1 &= ~(INTASSIGN_MASK << 9);
+ intassign1 |= (uint16_t)assign << 9;
+ break;
+ default:
+ raw_spin_unlock_irq(&desc->lock);
+ return -EINVAL;
+ }
+
+ sysint1_assign[pin] = assign;
+ icu1_write(INTASSIGN0, intassign0);
+ icu1_write(INTASSIGN1, intassign1);
+
+ raw_spin_unlock_irq(&desc->lock);
+
+ return 0;
+}
+
+static inline int set_sysint2_assign(unsigned int irq, unsigned char assign)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+ uint16_t intassign2, intassign3;
+ unsigned int pin;
+
+ pin = SYSINT2_IRQ_TO_PIN(irq);
+
+ raw_spin_lock_irq(&desc->lock);
+
+ intassign2 = icu1_read(INTASSIGN2);
+ intassign3 = icu1_read(INTASSIGN3);
+
+ switch (pin) {
+ case 0:
+ intassign2 &= ~INTASSIGN_MASK;
+ intassign2 |= (uint16_t)assign;
+ break;
+ case 1:
+ intassign2 &= ~(INTASSIGN_MASK << 3);
+ intassign2 |= (uint16_t)assign << 3;
+ break;
+ case 3:
+ intassign2 &= ~(INTASSIGN_MASK << 6);
+ intassign2 |= (uint16_t)assign << 6;
+ break;
+ case 4:
+ intassign2 &= ~(INTASSIGN_MASK << 9);
+ intassign2 |= (uint16_t)assign << 9;
+ break;
+ case 5:
+ intassign2 &= ~(INTASSIGN_MASK << 12);
+ intassign2 |= (uint16_t)assign << 12;
+ break;
+ case 6:
+ intassign3 &= ~INTASSIGN_MASK;
+ intassign3 |= (uint16_t)assign;
+ break;
+ case 7:
+ intassign3 &= ~(INTASSIGN_MASK << 3);
+ intassign3 |= (uint16_t)assign << 3;
+ break;
+ case 8:
+ intassign3 &= ~(INTASSIGN_MASK << 6);
+ intassign3 |= (uint16_t)assign << 6;
+ break;
+ case 9:
+ intassign3 &= ~(INTASSIGN_MASK << 9);
+ intassign3 |= (uint16_t)assign << 9;
+ break;
+ case 10:
+ intassign3 &= ~(INTASSIGN_MASK << 12);
+ intassign3 |= (uint16_t)assign << 12;
+ break;
+ default:
+ raw_spin_unlock_irq(&desc->lock);
+ return -EINVAL;
+ }
+
+ sysint2_assign[pin] = assign;
+ icu1_write(INTASSIGN2, intassign2);
+ icu1_write(INTASSIGN3, intassign3);
+
+ raw_spin_unlock_irq(&desc->lock);
+
+ return 0;
+}
+
+int vr41xx_set_intassign(unsigned int irq, unsigned char intassign)
+{
+ int retval = -EINVAL;
+
+ if (current_cpu_type() != CPU_VR4133)
+ return -EINVAL;
+
+ if (intassign > INTASSIGN_MAX)
+ return -EINVAL;
+
+ if (irq >= SYSINT1_IRQ_BASE && irq <= SYSINT1_IRQ_LAST)
+ retval = set_sysint1_assign(irq, intassign);
+ else if (irq >= SYSINT2_IRQ_BASE && irq <= SYSINT2_IRQ_LAST)
+ retval = set_sysint2_assign(irq, intassign);
+
+ return retval;
+}
+
+EXPORT_SYMBOL(vr41xx_set_intassign);
+
+static int icu_get_irq(unsigned int irq)
+{
+ uint16_t pend1, pend2;
+ uint16_t mask1, mask2;
+ int i;
+
+ pend1 = icu1_read(SYSINT1REG);
+ mask1 = icu1_read(MSYSINT1REG);
+
+ pend2 = icu2_read(SYSINT2REG);
+ mask2 = icu2_read(MSYSINT2REG);
+
+ mask1 &= pend1;
+ mask2 &= pend2;
+
+ if (mask1) {
+ for (i = 0; i < 16; i++) {
+ if (irq == INT_TO_IRQ(sysint1_assign[i]) && (mask1 & (1 << i)))
+ return SYSINT1_IRQ(i);
+ }
+ }
+
+ if (mask2) {
+ for (i = 0; i < 16; i++) {
+ if (irq == INT_TO_IRQ(sysint2_assign[i]) && (mask2 & (1 << i)))
+ return SYSINT2_IRQ(i);
+ }
+ }
+
+ printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2);
+
+ atomic_inc(&irq_err_count);
+
+ return -1;
+}
+
+static int __init vr41xx_icu_init(void)
+{
+ unsigned long icu1_start, icu2_start;
+ int i;
+
+ switch (current_cpu_type()) {
+ case CPU_VR4111:
+ case CPU_VR4121:
+ icu1_start = ICU1_TYPE1_BASE;
+ icu2_start = ICU2_TYPE1_BASE;
+ break;
+ case CPU_VR4122:
+ case CPU_VR4131:
+ case CPU_VR4133:
+ icu1_start = ICU1_TYPE2_BASE;
+ icu2_start = ICU2_TYPE2_BASE;
+ break;
+ default:
+ printk(KERN_ERR "ICU: Unexpected CPU of NEC VR4100 series\n");
+ return -ENODEV;
+ }
+
+ if (request_mem_region(icu1_start, ICU1_SIZE, "ICU") == NULL)
+ return -EBUSY;
+
+ if (request_mem_region(icu2_start, ICU2_SIZE, "ICU") == NULL) {
+ release_mem_region(icu1_start, ICU1_SIZE);
+ return -EBUSY;
+ }
+
+ icu1_base = ioremap(icu1_start, ICU1_SIZE);
+ if (icu1_base == NULL) {
+ release_mem_region(icu1_start, ICU1_SIZE);
+ release_mem_region(icu2_start, ICU2_SIZE);
+ return -ENOMEM;
+ }
+
+ icu2_base = ioremap(icu2_start, ICU2_SIZE);
+ if (icu2_base == NULL) {
+ iounmap(icu1_base);
+ release_mem_region(icu1_start, ICU1_SIZE);
+ release_mem_region(icu2_start, ICU2_SIZE);
+ return -ENOMEM;
+ }
+
+ icu1_write(MSYSINT1REG, 0);
+ icu1_write(MGIUINTLREG, 0xffff);
+
+ icu2_write(MSYSINT2REG, 0);
+ icu2_write(MGIUINTHREG, 0xffff);
+
+ for (i = SYSINT1_IRQ_BASE; i <= SYSINT1_IRQ_LAST; i++)
+ irq_set_chip_and_handler(i, &sysint1_irq_type,
+ handle_level_irq);
+
+ for (i = SYSINT2_IRQ_BASE; i <= SYSINT2_IRQ_LAST; i++)
+ irq_set_chip_and_handler(i, &sysint2_irq_type,
+ handle_level_irq);
+
+ cascade_irq(INT0_IRQ, icu_get_irq);
+ cascade_irq(INT1_IRQ, icu_get_irq);
+ cascade_irq(INT2_IRQ, icu_get_irq);
+ cascade_irq(INT3_IRQ, icu_get_irq);
+ cascade_irq(INT4_IRQ, icu_get_irq);
+
+ return 0;
+}
+
+core_initcall(vr41xx_icu_init);
Code Review / kvmfornfv.git / blobdiff