hw/arm/pxa2xx_pic.c - qemu - Git at Google

 /*
  * Intel XScale PXA Programmable Interrupt Controller.
  *
  * Copyright (c) 2006 Openedhand Ltd.
  * Copyright (c) 2006 Thorsten Zitterell
  * Written by Andrzej Zaborowski <balrog@zabor.org>
  *
  * This code is licensed under the GPL.
  */

 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qemu/module.h"
 #include "qemu/log.h"
 #include "cpu.h"
 #include "hw/arm/pxa.h"
 #include "hw/sysbus.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
 #include "qom/object.h"
 #include "target/arm/cpregs.h"

 #define ICIP	0x00	/* Interrupt Controller IRQ Pending register */
 #define ICMR	0x04	/* Interrupt Controller Mask register */
 #define ICLR	0x08	/* Interrupt Controller Level register */
 #define ICFP	0x0c	/* Interrupt Controller FIQ Pending register */
 #define ICPR	0x10	/* Interrupt Controller Pending register */
 #define ICCR	0x14	/* Interrupt Controller Control register */
 #define ICHP	0x18	/* Interrupt Controller Highest Priority register */
 #define IPR0	0x1c	/* Interrupt Controller Priority register 0 */
 #define IPR31	0x98	/* Interrupt Controller Priority register 31 */
 #define ICIP2	0x9c	/* Interrupt Controller IRQ Pending register 2 */
 #define ICMR2	0xa0	/* Interrupt Controller Mask register 2 */
 #define ICLR2	0xa4	/* Interrupt Controller Level register 2 */
 #define ICFP2	0xa8	/* Interrupt Controller FIQ Pending register 2 */
 #define ICPR2	0xac	/* Interrupt Controller Pending register 2 */
 #define IPR32	0xb0	/* Interrupt Controller Priority register 32 */
 #define IPR39	0xcc	/* Interrupt Controller Priority register 39 */

 #define PXA2XX_PIC_SRCS	40

 #define TYPE_PXA2XX_PIC "pxa2xx_pic"
 OBJECT_DECLARE_SIMPLE_TYPE(PXA2xxPICState, PXA2XX_PIC)

 struct PXA2xxPICState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/

     MemoryRegion iomem;
     ARMCPU *cpu;
     uint32_t int_enabled[2];
     uint32_t int_pending[2];
     uint32_t is_fiq[2];
     uint32_t int_idle;
     uint32_t priority[PXA2XX_PIC_SRCS];
 };

 static void pxa2xx_pic_update(void *opaque)
 {
     uint32_t mask[2];
     PXA2xxPICState *s = (PXA2xxPICState *) opaque;
     CPUState *cpu = CPU(s->cpu);

     if (cpu->halted) {
         mask[0] = s->int_pending[0] & (s->int_enabled[0] | s->int_idle);
         mask[1] = s->int_pending[1] & (s->int_enabled[1] | s->int_idle);
         if (mask[0] || mask[1]) {
             cpu_interrupt(cpu, CPU_INTERRUPT_EXITTB);
         }
     }

     mask[0] = s->int_pending[0] & s->int_enabled[0];
     mask[1] = s->int_pending[1] & s->int_enabled[1];

     if ((mask[0] & s->is_fiq[0]) || (mask[1] & s->is_fiq[1])) {
         cpu_interrupt(cpu, CPU_INTERRUPT_FIQ);
     } else {
         cpu_reset_interrupt(cpu, CPU_INTERRUPT_FIQ);
     }

     if ((mask[0] & ~s->is_fiq[0]) || (mask[1] & ~s->is_fiq[1])) {
         cpu_interrupt(cpu, CPU_INTERRUPT_HARD);
     } else {
         cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD);
     }
 }

 /* Note: Here level means state of the signal on a pin, not
  * IRQ/FIQ distinction as in PXA Developer Manual.  */
 static void pxa2xx_pic_set_irq(void *opaque, int irq, int level)
 {
     PXA2xxPICState *s = (PXA2xxPICState *) opaque;
     int int_set = (irq >= 32);
     irq &= 31;

     if (level)
         s->int_pending[int_set] |= 1 << irq;
     else
         s->int_pending[int_set] &= ~(1 << irq);

     pxa2xx_pic_update(opaque);
 }

 static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
     int i, int_set, irq;
     uint32_t bit, mask[2];
     uint32_t ichp = 0x003f003f;	/* Both IDs invalid */

     mask[0] = s->int_pending[0] & s->int_enabled[0];
     mask[1] = s->int_pending[1] & s->int_enabled[1];

     for (i = PXA2XX_PIC_SRCS - 1; i >= 0; i --) {
         irq = s->priority[i] & 0x3f;
         if ((s->priority[i] & (1U << 31)) && irq < PXA2XX_PIC_SRCS) {
             /* Source peripheral ID is valid.  */
             bit = 1 << (irq & 31);
             int_set = (irq >= 32);

             if (mask[int_set] & bit & s->is_fiq[int_set]) {
                 /* FIQ asserted */
                 ichp &= 0xffff0000;
                 ichp |= (1 << 15) | irq;
             }

             if (mask[int_set] & bit & ~s->is_fiq[int_set]) {
                 /* IRQ asserted */
                 ichp &= 0x0000ffff;
                 ichp |= (1U << 31) | (irq << 16);
             }
         }
     }

     return ichp;
 }

 static uint64_t pxa2xx_pic_mem_read(void *opaque, hwaddr offset,
                                     unsigned size)
 {
     PXA2xxPICState *s = (PXA2xxPICState *) opaque;

     switch (offset) {
     case ICIP:	/* IRQ Pending register */
         return s->int_pending[0] & ~s->is_fiq[0] & s->int_enabled[0];
     case ICIP2:	/* IRQ Pending register 2 */
         return s->int_pending[1] & ~s->is_fiq[1] & s->int_enabled[1];
     case ICMR:	/* Mask register */
         return s->int_enabled[0];
     case ICMR2:	/* Mask register 2 */
         return s->int_enabled[1];
     case ICLR:	/* Level register */
         return s->is_fiq[0];
     case ICLR2:	/* Level register 2 */
         return s->is_fiq[1];
     case ICCR:	/* Idle mask */
         return (s->int_idle == 0);
     case ICFP:	/* FIQ Pending register */
         return s->int_pending[0] & s->is_fiq[0] & s->int_enabled[0];
     case ICFP2:	/* FIQ Pending register 2 */
         return s->int_pending[1] & s->is_fiq[1] & s->int_enabled[1];
     case ICPR:	/* Pending register */
         return s->int_pending[0];
     case ICPR2:	/* Pending register 2 */
         return s->int_pending[1];
     case IPR0  ... IPR31:
         return s->priority[0  + ((offset - IPR0 ) >> 2)];
     case IPR32 ... IPR39:
         return s->priority[32 + ((offset - IPR32) >> 2)];
     case ICHP:	/* Highest Priority register */
         return pxa2xx_pic_highest(s);
     default:
         qemu_log_mask(LOG_GUEST_ERROR,
                       "pxa2xx_pic_mem_read: bad register offset 0x%" HWADDR_PRIx
                       "\n", offset);
         return 0;
     }
 }

 static void pxa2xx_pic_mem_write(void *opaque, hwaddr offset,
                                  uint64_t value, unsigned size)
 {
     PXA2xxPICState *s = (PXA2xxPICState *) opaque;

     switch (offset) {
     case ICMR:	/* Mask register */
         s->int_enabled[0] = value;
         break;
     case ICMR2:	/* Mask register 2 */
         s->int_enabled[1] = value;
         break;
     case ICLR:	/* Level register */
         s->is_fiq[0] = value;
         break;
     case ICLR2:	/* Level register 2 */
         s->is_fiq[1] = value;
         break;
     case ICCR:	/* Idle mask */
         s->int_idle = (value & 1) ? 0 : ~0;
         break;
     case IPR0  ... IPR31:
         s->priority[0  + ((offset - IPR0 ) >> 2)] = value & 0x8000003f;
         break;
     case IPR32 ... IPR39:
         s->priority[32 + ((offset - IPR32) >> 2)] = value & 0x8000003f;
         break;
     default:
         qemu_log_mask(LOG_GUEST_ERROR,
                       "pxa2xx_pic_mem_write: bad register offset 0x%"
                       HWADDR_PRIx "\n", offset);
         return;
     }
     pxa2xx_pic_update(opaque);
 }

 /* Interrupt Controller Coprocessor Space Register Mapping */
 static const int pxa2xx_cp_reg_map[0x10] = {
     [0x0 ... 0xf] = -1,
     [0x0] = ICIP,
     [0x1] = ICMR,
     [0x2] = ICLR,
     [0x3] = ICFP,
     [0x4] = ICPR,
     [0x5] = ICHP,
     [0x6] = ICIP2,
     [0x7] = ICMR2,
     [0x8] = ICLR2,
     [0x9] = ICFP2,
     [0xa] = ICPR2,
 };

 static uint64_t pxa2xx_pic_cp_read(CPUARMState *env, const ARMCPRegInfo *ri)
 {
     int offset = pxa2xx_cp_reg_map[ri->crn];
     return pxa2xx_pic_mem_read(ri->opaque, offset, 4);
 }

 static void pxa2xx_pic_cp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                 uint64_t value)
 {
     int offset = pxa2xx_cp_reg_map[ri->crn];
     pxa2xx_pic_mem_write(ri->opaque, offset, value, 4);
 }

 #define REGINFO_FOR_PIC_CP(NAME, CRN) \
     { .name = NAME, .cp = 6, .crn = CRN, .crm = 0, .opc1 = 0, .opc2 = 0, \
       .access = PL1_RW, .type = ARM_CP_IO, \
       .readfn = pxa2xx_pic_cp_read, .writefn = pxa2xx_pic_cp_write }

 static const ARMCPRegInfo pxa_pic_cp_reginfo[] = {
     REGINFO_FOR_PIC_CP("ICIP", 0),
     REGINFO_FOR_PIC_CP("ICMR", 1),
     REGINFO_FOR_PIC_CP("ICLR", 2),
     REGINFO_FOR_PIC_CP("ICFP", 3),
     REGINFO_FOR_PIC_CP("ICPR", 4),
     REGINFO_FOR_PIC_CP("ICHP", 5),
     REGINFO_FOR_PIC_CP("ICIP2", 6),
     REGINFO_FOR_PIC_CP("ICMR2", 7),
     REGINFO_FOR_PIC_CP("ICLR2", 8),
     REGINFO_FOR_PIC_CP("ICFP2", 9),
     REGINFO_FOR_PIC_CP("ICPR2", 0xa),
 };

 static const MemoryRegionOps pxa2xx_pic_ops = {
     .read = pxa2xx_pic_mem_read,
     .write = pxa2xx_pic_mem_write,
     .endianness = DEVICE_NATIVE_ENDIAN,
 };

 static int pxa2xx_pic_post_load(void *opaque, int version_id)
 {
     pxa2xx_pic_update(opaque);
     return 0;
 }

 static void pxa2xx_pic_reset_hold(Object *obj)
 {
     PXA2xxPICState *s = PXA2XX_PIC(obj);

     s->int_pending[0] = 0;
     s->int_pending[1] = 0;
     s->int_enabled[0] = 0;
     s->int_enabled[1] = 0;
     s->is_fiq[0] = 0;
     s->is_fiq[1] = 0;
 }

 DeviceState *pxa2xx_pic_init(hwaddr base, ARMCPU *cpu)
 {
     DeviceState *dev = qdev_new(TYPE_PXA2XX_PIC);

     object_property_set_link(OBJECT(dev), "arm-cpu",
                              OBJECT(cpu), &error_abort);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);

     return dev;
 }

 static void pxa2xx_pic_realize(DeviceState *dev, Error **errp)
 {
     PXA2xxPICState *s = PXA2XX_PIC(dev);

     qdev_init_gpio_in(dev, pxa2xx_pic_set_irq, PXA2XX_PIC_SRCS);

     /* Enable IC memory-mapped registers access.  */
     memory_region_init_io(&s->iomem, OBJECT(s), &pxa2xx_pic_ops, s,
                           "pxa2xx-pic", 0x00100000);
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);

     /* Enable IC coprocessor access.  */
     define_arm_cp_regs_with_opaque(s->cpu, pxa_pic_cp_reginfo, s);
 }

 static const VMStateDescription vmstate_pxa2xx_pic_regs = {
     .name = "pxa2xx_pic",
     .version_id = 0,
     .minimum_version_id = 0,
     .post_load = pxa2xx_pic_post_load,
     .fields = (const VMStateField[]) {
         VMSTATE_UINT32_ARRAY(int_enabled, PXA2xxPICState, 2),
         VMSTATE_UINT32_ARRAY(int_pending, PXA2xxPICState, 2),
         VMSTATE_UINT32_ARRAY(is_fiq, PXA2xxPICState, 2),
         VMSTATE_UINT32(int_idle, PXA2xxPICState),
         VMSTATE_UINT32_ARRAY(priority, PXA2xxPICState, PXA2XX_PIC_SRCS),
         VMSTATE_END_OF_LIST(),
     },
 };

 static Property pxa2xx_pic_properties[] = {
     DEFINE_PROP_LINK("arm-cpu", PXA2xxPICState, cpu,
                      TYPE_ARM_CPU, ARMCPU *),
     DEFINE_PROP_END_OF_LIST(),
 };

 static void pxa2xx_pic_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     ResettableClass *rc = RESETTABLE_CLASS(klass);

     device_class_set_props(dc, pxa2xx_pic_properties);
     dc->realize = pxa2xx_pic_realize;
     dc->desc = "PXA2xx PIC";
     dc->vmsd = &vmstate_pxa2xx_pic_regs;
     rc->phases.hold = pxa2xx_pic_reset_hold;
 }

 static const TypeInfo pxa2xx_pic_info = {
     .name          = TYPE_PXA2XX_PIC,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(PXA2xxPICState),
     .class_init    = pxa2xx_pic_class_init,
 };

 static void pxa2xx_pic_register_types(void)
 {
     type_register_static(&pxa2xx_pic_info);
 }

 type_init(pxa2xx_pic_register_types)
	/*
	* Intel XScale PXA Programmable Interrupt Controller.
	*
	* Copyright (c) 2006 Openedhand Ltd.
	* Copyright (c) 2006 Thorsten Zitterell
	* Written by Andrzej Zaborowski <balrog@zabor.org>
	*
	* This code is licensed under the GPL.
	*/

	#include "qemu/osdep.h"
	#include "qapi/error.h"
	#include "qemu/module.h"
	#include "qemu/log.h"
	#include "cpu.h"
	#include "hw/arm/pxa.h"
	#include "hw/sysbus.h"
	#include "hw/qdev-properties.h"
	#include "migration/vmstate.h"
	#include "qom/object.h"
	#include "target/arm/cpregs.h"

	#define ICIP 0x00 /* Interrupt Controller IRQ Pending register */
	#define ICMR 0x04 /* Interrupt Controller Mask register */
	#define ICLR 0x08 /* Interrupt Controller Level register */
	#define ICFP 0x0c /* Interrupt Controller FIQ Pending register */
	#define ICPR 0x10 /* Interrupt Controller Pending register */
	#define ICCR 0x14 /* Interrupt Controller Control register */
	#define ICHP 0x18 /* Interrupt Controller Highest Priority register */
	#define IPR0 0x1c /* Interrupt Controller Priority register 0 */
	#define IPR31 0x98 /* Interrupt Controller Priority register 31 */
	#define ICIP2 0x9c /* Interrupt Controller IRQ Pending register 2 */
	#define ICMR2 0xa0 /* Interrupt Controller Mask register 2 */
	#define ICLR2 0xa4 /* Interrupt Controller Level register 2 */
	#define ICFP2 0xa8 /* Interrupt Controller FIQ Pending register 2 */
	#define ICPR2 0xac /* Interrupt Controller Pending register 2 */
	#define IPR32 0xb0 /* Interrupt Controller Priority register 32 */
	#define IPR39 0xcc /* Interrupt Controller Priority register 39 */

	#define PXA2XX_PIC_SRCS 40

	#define TYPE_PXA2XX_PIC "pxa2xx_pic"
	OBJECT_DECLARE_SIMPLE_TYPE(PXA2xxPICState, PXA2XX_PIC)

	struct PXA2xxPICState {
	/< private >/
	SysBusDevice parent_obj;
	/< public >/

	MemoryRegion iomem;
	ARMCPU *cpu;
	uint32_t int_enabled[2];
	uint32_t int_pending[2];
	uint32_t is_fiq[2];
	uint32_t int_idle;
	uint32_t priority[PXA2XX_PIC_SRCS];
	};

	static void pxa2xx_pic_update(void *opaque)
	{
	uint32_t mask[2];
	PXA2xxPICState s = (PXA2xxPICState ) opaque;
	CPUState *cpu = CPU(s->cpu);

	if (cpu->halted) {
	mask[0] = s->int_pending[0] & (s->int_enabled[0] \| s->int_idle);
	mask[1] = s->int_pending[1] & (s->int_enabled[1] \| s->int_idle);
	if (mask[0] \|\| mask[1]) {
	cpu_interrupt(cpu, CPU_INTERRUPT_EXITTB);
	}
	}

	mask[0] = s->int_pending[0] & s->int_enabled[0];
	mask[1] = s->int_pending[1] & s->int_enabled[1];

	if ((mask[0] & s->is_fiq[0]) \|\| (mask[1] & s->is_fiq[1])) {
	cpu_interrupt(cpu, CPU_INTERRUPT_FIQ);
	} else {
	cpu_reset_interrupt(cpu, CPU_INTERRUPT_FIQ);
	}

	if ((mask[0] & ~s->is_fiq[0]) \|\| (mask[1] & ~s->is_fiq[1])) {
	cpu_interrupt(cpu, CPU_INTERRUPT_HARD);
	} else {
	cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD);
	}
	}

	/* Note: Here level means state of the signal on a pin, not
	* IRQ/FIQ distinction as in PXA Developer Manual. */
	static void pxa2xx_pic_set_irq(void *opaque, int irq, int level)
	{
	PXA2xxPICState s = (PXA2xxPICState ) opaque;
	int int_set = (irq >= 32);
	irq &= 31;

	if (level)
	s->int_pending[int_set] \|= 1 << irq;
	else
	s->int_pending[int_set] &= ~(1 << irq);

	pxa2xx_pic_update(opaque);
	}

	static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
	int i, int_set, irq;
	uint32_t bit, mask[2];
	uint32_t ichp = 0x003f003f; /* Both IDs invalid */

	mask[0] = s->int_pending[0] & s->int_enabled[0];
	mask[1] = s->int_pending[1] & s->int_enabled[1];

	for (i = PXA2XX_PIC_SRCS - 1; i >= 0; i --) {
	irq = s->priority[i] & 0x3f;
	if ((s->priority[i] & (1U << 31)) && irq < PXA2XX_PIC_SRCS) {
	/* Source peripheral ID is valid. */
	bit = 1 << (irq & 31);
	int_set = (irq >= 32);

	if (mask[int_set] & bit & s->is_fiq[int_set]) {
	/* FIQ asserted */
	ichp &= 0xffff0000;
	ichp \|= (1 << 15) \| irq;
	}

	if (mask[int_set] & bit & ~s->is_fiq[int_set]) {
	/* IRQ asserted */
	ichp &= 0x0000ffff;
	ichp \|= (1U << 31) \| (irq << 16);
	}
	}
	}

	return ichp;
	}

	static uint64_t pxa2xx_pic_mem_read(void *opaque, hwaddr offset,
	unsigned size)
	{
	PXA2xxPICState s = (PXA2xxPICState ) opaque;

	switch (offset) {
	case ICIP: /* IRQ Pending register */
	return s->int_pending[0] & ~s->is_fiq[0] & s->int_enabled[0];
	case ICIP2: /* IRQ Pending register 2 */
	return s->int_pending[1] & ~s->is_fiq[1] & s->int_enabled[1];
	case ICMR: /* Mask register */
	return s->int_enabled[0];
	case ICMR2: /* Mask register 2 */
	return s->int_enabled[1];
	case ICLR: /* Level register */
	return s->is_fiq[0];
	case ICLR2: /* Level register 2 */
	return s->is_fiq[1];
	case ICCR: /* Idle mask */
	return (s->int_idle == 0);
	case ICFP: /* FIQ Pending register */
	return s->int_pending[0] & s->is_fiq[0] & s->int_enabled[0];
	case ICFP2: /* FIQ Pending register 2 */
	return s->int_pending[1] & s->is_fiq[1] & s->int_enabled[1];
	case ICPR: /* Pending register */
	return s->int_pending[0];
	case ICPR2: /* Pending register 2 */
	return s->int_pending[1];
	case IPR0 ... IPR31:
	return s->priority[0 + ((offset - IPR0 ) >> 2)];
	case IPR32 ... IPR39:
	return s->priority[32 + ((offset - IPR32) >> 2)];
	case ICHP: /* Highest Priority register */
	return pxa2xx_pic_highest(s);
	default:
	qemu_log_mask(LOG_GUEST_ERROR,
	"pxa2xx_pic_mem_read: bad register offset 0x%" HWADDR_PRIx
	"\n", offset);
	return 0;
	}
	}

	static void pxa2xx_pic_mem_write(void *opaque, hwaddr offset,
	uint64_t value, unsigned size)
	{
	PXA2xxPICState s = (PXA2xxPICState ) opaque;

	switch (offset) {
	case ICMR: /* Mask register */
	s->int_enabled[0] = value;
	break;
	case ICMR2: /* Mask register 2 */
	s->int_enabled[1] = value;
	break;
	case ICLR: /* Level register */
	s->is_fiq[0] = value;
	break;
	case ICLR2: /* Level register 2 */
	s->is_fiq[1] = value;
	break;
	case ICCR: /* Idle mask */
	s->int_idle = (value & 1) ? 0 : ~0;
	break;
	case IPR0 ... IPR31:
	s->priority[0 + ((offset - IPR0 ) >> 2)] = value & 0x8000003f;
	break;
	case IPR32 ... IPR39:
	s->priority[32 + ((offset - IPR32) >> 2)] = value & 0x8000003f;
	break;
	default:
	qemu_log_mask(LOG_GUEST_ERROR,
	"pxa2xx_pic_mem_write: bad register offset 0x%"
	HWADDR_PRIx "\n", offset);
	return;
	}
	pxa2xx_pic_update(opaque);
	}

	/* Interrupt Controller Coprocessor Space Register Mapping */
	static const int pxa2xx_cp_reg_map[0x10] = {
	[0x0 ... 0xf] = -1,
	[0x0] = ICIP,
	[0x1] = ICMR,
	[0x2] = ICLR,
	[0x3] = ICFP,
	[0x4] = ICPR,
	[0x5] = ICHP,
	[0x6] = ICIP2,
	[0x7] = ICMR2,
	[0x8] = ICLR2,
	[0x9] = ICFP2,
	[0xa] = ICPR2,
	};

	static uint64_t pxa2xx_pic_cp_read(CPUARMState env, const ARMCPRegInfo ri)
	{
	int offset = pxa2xx_cp_reg_map[ri->crn];
	return pxa2xx_pic_mem_read(ri->opaque, offset, 4);
	}

	static void pxa2xx_pic_cp_write(CPUARMState env, const ARMCPRegInfo ri,
	uint64_t value)
	{
	int offset = pxa2xx_cp_reg_map[ri->crn];
	pxa2xx_pic_mem_write(ri->opaque, offset, value, 4);
	}

	#define REGINFO_FOR_PIC_CP(NAME, CRN) \
	{ .name = NAME, .cp = 6, .crn = CRN, .crm = 0, .opc1 = 0, .opc2 = 0, \
	.access = PL1_RW, .type = ARM_CP_IO, \
	.readfn = pxa2xx_pic_cp_read, .writefn = pxa2xx_pic_cp_write }

	static const ARMCPRegInfo pxa_pic_cp_reginfo[] = {
	REGINFO_FOR_PIC_CP("ICIP", 0),
	REGINFO_FOR_PIC_CP("ICMR", 1),
	REGINFO_FOR_PIC_CP("ICLR", 2),
	REGINFO_FOR_PIC_CP("ICFP", 3),
	REGINFO_FOR_PIC_CP("ICPR", 4),
	REGINFO_FOR_PIC_CP("ICHP", 5),
	REGINFO_FOR_PIC_CP("ICIP2", 6),
	REGINFO_FOR_PIC_CP("ICMR2", 7),
	REGINFO_FOR_PIC_CP("ICLR2", 8),
	REGINFO_FOR_PIC_CP("ICFP2", 9),
	REGINFO_FOR_PIC_CP("ICPR2", 0xa),
	};

	static const MemoryRegionOps pxa2xx_pic_ops = {
	.read = pxa2xx_pic_mem_read,
	.write = pxa2xx_pic_mem_write,
	.endianness = DEVICE_NATIVE_ENDIAN,
	};

	static int pxa2xx_pic_post_load(void *opaque, int version_id)
	{
	pxa2xx_pic_update(opaque);
	return 0;
	}

	static void pxa2xx_pic_reset_hold(Object *obj)
	{
	PXA2xxPICState *s = PXA2XX_PIC(obj);

	s->int_pending[0] = 0;
	s->int_pending[1] = 0;
	s->int_enabled[0] = 0;
	s->int_enabled[1] = 0;
	s->is_fiq[0] = 0;
	s->is_fiq[1] = 0;
	}

	DeviceState pxa2xx_pic_init(hwaddr base, ARMCPU cpu)
	{
	DeviceState *dev = qdev_new(TYPE_PXA2XX_PIC);

	object_property_set_link(OBJECT(dev), "arm-cpu",
	OBJECT(cpu), &error_abort);
	sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
	sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);

	return dev;
	}

	static void pxa2xx_pic_realize(DeviceState dev, Error *errp)
	{
	PXA2xxPICState *s = PXA2XX_PIC(dev);

	qdev_init_gpio_in(dev, pxa2xx_pic_set_irq, PXA2XX_PIC_SRCS);

	/* Enable IC memory-mapped registers access. */
	memory_region_init_io(&s->iomem, OBJECT(s), &pxa2xx_pic_ops, s,
	"pxa2xx-pic", 0x00100000);
	sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);

	/* Enable IC coprocessor access. */
	define_arm_cp_regs_with_opaque(s->cpu, pxa_pic_cp_reginfo, s);
	}

	static const VMStateDescription vmstate_pxa2xx_pic_regs = {
	.name = "pxa2xx_pic",
	.version_id = 0,
	.minimum_version_id = 0,
	.post_load = pxa2xx_pic_post_load,
	.fields = (const VMStateField[]) {
	VMSTATE_UINT32_ARRAY(int_enabled, PXA2xxPICState, 2),
	VMSTATE_UINT32_ARRAY(int_pending, PXA2xxPICState, 2),
	VMSTATE_UINT32_ARRAY(is_fiq, PXA2xxPICState, 2),
	VMSTATE_UINT32(int_idle, PXA2xxPICState),
	VMSTATE_UINT32_ARRAY(priority, PXA2xxPICState, PXA2XX_PIC_SRCS),
	VMSTATE_END_OF_LIST(),
	},
	};

	static Property pxa2xx_pic_properties[] = {
	DEFINE_PROP_LINK("arm-cpu", PXA2xxPICState, cpu,
	TYPE_ARM_CPU, ARMCPU *),
	DEFINE_PROP_END_OF_LIST(),
	};

	static void pxa2xx_pic_class_init(ObjectClass klass, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(klass);
	ResettableClass *rc = RESETTABLE_CLASS(klass);

	device_class_set_props(dc, pxa2xx_pic_properties);
	dc->realize = pxa2xx_pic_realize;
	dc->desc = "PXA2xx PIC";
	dc->vmsd = &vmstate_pxa2xx_pic_regs;
	rc->phases.hold = pxa2xx_pic_reset_hold;
	}

	static const TypeInfo pxa2xx_pic_info = {
	.name = TYPE_PXA2XX_PIC,
	.parent = TYPE_SYS_BUS_DEVICE,
	.instance_size = sizeof(PXA2xxPICState),
	.class_init = pxa2xx_pic_class_init,
	};

	static void pxa2xx_pic_register_types(void)
	{
	type_register_static(&pxa2xx_pic_info);
	}

	type_init(pxa2xx_pic_register_types)