hw/intc/imx_avic.c - qemu - Git at Google

 /*
  * i.MX31 Vectored Interrupt Controller
  *
  * Note this is NOT the PL192 provided by ARM, but
  * a custom implementation by Freescale.
  *
  * Copyright (c) 2008 OKL
  * Copyright (c) 2011 NICTA Pty Ltd
  * Originally written by Hans Jiang
  * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
  *
  * This code is licensed under the GPL version 2 or later.  See
  * the COPYING file in the top-level directory.
  *
  * TODO: implement vectors.
  */

 #include "qemu/osdep.h"
 #include "hw/intc/imx_avic.h"
 #include "qemu/log.h"

 #ifndef DEBUG_IMX_AVIC
 #define DEBUG_IMX_AVIC 0
 #endif

 #define DPRINTF(fmt, args...) \
     do { \
         if (DEBUG_IMX_AVIC) { \
             fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_AVIC, \
                                              __func__, ##args); \
         } \
     } while (0)

 static const VMStateDescription vmstate_imx_avic = {
     .name = TYPE_IMX_AVIC,
     .version_id = 1,
     .minimum_version_id = 1,
     .fields = (VMStateField[]) {
         VMSTATE_UINT64(pending, IMXAVICState),
         VMSTATE_UINT64(enabled, IMXAVICState),
         VMSTATE_UINT64(is_fiq, IMXAVICState),
         VMSTATE_UINT32(intcntl, IMXAVICState),
         VMSTATE_UINT32(intmask, IMXAVICState),
         VMSTATE_UINT32_ARRAY(prio, IMXAVICState, PRIO_WORDS),
         VMSTATE_END_OF_LIST()
     },
 };

 static inline int imx_avic_prio(IMXAVICState *s, int irq)
 {
     uint32_t word = irq / PRIO_PER_WORD;
     uint32_t part = 4 * (irq % PRIO_PER_WORD);
     return 0xf & (s->prio[word] >> part);
 }

 /* Update interrupts.  */
 static void imx_avic_update(IMXAVICState *s)
 {
     int i;
     uint64_t new = s->pending & s->enabled;
     uint64_t flags;

     flags = new & s->is_fiq;
     qemu_set_irq(s->fiq, !!flags);

     flags = new & ~s->is_fiq;
     if (!flags || (s->intmask == 0x1f)) {
         qemu_set_irq(s->irq, !!flags);
         return;
     }

     /*
      * Take interrupt if there's a pending interrupt with
      * priority higher than the value of intmask
      */
     for (i = 0; i < IMX_AVIC_NUM_IRQS; i++) {
         if (flags & (1UL << i)) {
             if (imx_avic_prio(s, i) > s->intmask) {
                 qemu_set_irq(s->irq, 1);
                 return;
             }
         }
     }
     qemu_set_irq(s->irq, 0);
 }

 static void imx_avic_set_irq(void *opaque, int irq, int level)
 {
     IMXAVICState *s = (IMXAVICState *)opaque;

     if (level) {
         DPRINTF("Raising IRQ %d, prio %d\n",
                 irq, imx_avic_prio(s, irq));
         s->pending |= (1ULL << irq);
     } else {
         DPRINTF("Clearing IRQ %d, prio %d\n",
                 irq, imx_avic_prio(s, irq));
         s->pending &= ~(1ULL << irq);
     }

     imx_avic_update(s);
 }


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

     DPRINTF("read(offset = 0x%" HWADDR_PRIx ")\n", offset);

     switch (offset >> 2) {
     case 0: /* INTCNTL */
         return s->intcntl;

     case 1: /* Normal Interrupt Mask Register, NIMASK */
         return s->intmask;

     case 2: /* Interrupt Enable Number Register, INTENNUM */
     case 3: /* Interrupt Disable Number Register, INTDISNUM */
         return 0;

     case 4: /* Interrupt Enabled Number Register High */
         return s->enabled >> 32;

     case 5: /* Interrupt Enabled Number Register Low */
         return s->enabled & 0xffffffffULL;

     case 6: /* Interrupt Type Register High */
         return s->is_fiq >> 32;

     case 7: /* Interrupt Type Register Low */
         return s->is_fiq & 0xffffffffULL;

     case 8: /* Normal Interrupt Priority Register 7 */
     case 9: /* Normal Interrupt Priority Register 6 */
     case 10:/* Normal Interrupt Priority Register 5 */
     case 11:/* Normal Interrupt Priority Register 4 */
     case 12:/* Normal Interrupt Priority Register 3 */
     case 13:/* Normal Interrupt Priority Register 2 */
     case 14:/* Normal Interrupt Priority Register 1 */
     case 15:/* Normal Interrupt Priority Register 0 */
         return s->prio[15-(offset>>2)];

     case 16: /* Normal interrupt vector and status register */
     {
         /*
          * This returns the highest priority
          * outstanding interrupt.  Where there is more than
          * one pending IRQ with the same priority,
          * take the highest numbered one.
          */
         uint64_t flags = s->pending & s->enabled & ~s->is_fiq;
         int i;
         int prio = -1;
         int irq = -1;
         for (i = 63; i >= 0; --i) {
             if (flags & (1ULL<<i)) {
                 int irq_prio = imx_avic_prio(s, i);
                 if (irq_prio > prio) {
                     irq = i;
                     prio = irq_prio;
                 }
             }
         }
         if (irq >= 0) {
             imx_avic_set_irq(s, irq, 0);
             return irq << 16 | prio;
         }
         return 0xffffffffULL;
     }
     case 17:/* Fast Interrupt vector and status register */
     {
         uint64_t flags = s->pending & s->enabled & s->is_fiq;
         int i = ctz64(flags);
         if (i < 64) {
             imx_avic_set_irq(opaque, i, 0);
             return i;
         }
         return 0xffffffffULL;
     }
     case 18:/* Interrupt source register high */
         return s->pending >> 32;

     case 19:/* Interrupt source register low */
         return s->pending & 0xffffffffULL;

     case 20:/* Interrupt Force Register high */
     case 21:/* Interrupt Force Register low */
         return 0;

     case 22:/* Normal Interrupt Pending Register High */
         return (s->pending & s->enabled & ~s->is_fiq) >> 32;

     case 23:/* Normal Interrupt Pending Register Low */
         return (s->pending & s->enabled & ~s->is_fiq) & 0xffffffffULL;

     case 24: /* Fast Interrupt Pending Register High  */
         return (s->pending & s->enabled & s->is_fiq) >> 32;

     case 25: /* Fast Interrupt Pending Register Low  */
         return (s->pending & s->enabled & s->is_fiq) & 0xffffffffULL;

     case 0x40:            /* AVIC vector 0, use for WFI WAR */
         return 0x4;

     default:
         qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
                       HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
         return 0;
     }
 }

 static void imx_avic_write(void *opaque, hwaddr offset,
                           uint64_t val, unsigned size)
 {
     IMXAVICState *s = (IMXAVICState *)opaque;

     /* Vector Registers not yet supported */
     if (offset >= 0x100 && offset <= 0x2fc) {
         qemu_log_mask(LOG_UNIMP, "[%s]%s: vector %d ignored\n",
                       TYPE_IMX_AVIC, __func__, (int)((offset - 0x100) >> 2));
         return;
     }

     DPRINTF("(0x%" HWADDR_PRIx ") = 0x%x\n", offset, (unsigned int)val);

     switch (offset >> 2) {
     case 0: /* Interrupt Control Register, INTCNTL */
         s->intcntl = val & (ABFEN | NIDIS | FIDIS | NIAD | FIAD | NM);
         if (s->intcntl & ABFEN) {
             s->intcntl &= ~(val & ABFLAG);
         }
         break;

     case 1: /* Normal Interrupt Mask Register, NIMASK */
         s->intmask = val & 0x1f;
         break;

     case 2: /* Interrupt Enable Number Register, INTENNUM */
         DPRINTF("enable(%d)\n", (int)val);
         val &= 0x3f;
         s->enabled |= (1ULL << val);
         break;

     case 3: /* Interrupt Disable Number Register, INTDISNUM */
         DPRINTF("disable(%d)\n", (int)val);
         val &= 0x3f;
         s->enabled &= ~(1ULL << val);
         break;

     case 4: /* Interrupt Enable Number Register High */
         s->enabled = (s->enabled & 0xffffffffULL) | (val << 32);
         break;

     case 5: /* Interrupt Enable Number Register Low */
         s->enabled = (s->enabled & 0xffffffff00000000ULL) | val;
         break;

     case 6: /* Interrupt Type Register High */
         s->is_fiq = (s->is_fiq & 0xffffffffULL) | (val << 32);
         break;

     case 7: /* Interrupt Type Register Low */
         s->is_fiq = (s->is_fiq & 0xffffffff00000000ULL) | val;
         break;

     case 8: /* Normal Interrupt Priority Register 7 */
     case 9: /* Normal Interrupt Priority Register 6 */
     case 10:/* Normal Interrupt Priority Register 5 */
     case 11:/* Normal Interrupt Priority Register 4 */
     case 12:/* Normal Interrupt Priority Register 3 */
     case 13:/* Normal Interrupt Priority Register 2 */
     case 14:/* Normal Interrupt Priority Register 1 */
     case 15:/* Normal Interrupt Priority Register 0 */
         s->prio[15-(offset>>2)] = val;
         break;

         /* Read-only registers, writes ignored */
     case 16:/* Normal Interrupt Vector and Status register */
     case 17:/* Fast Interrupt vector and status register */
     case 18:/* Interrupt source register high */
     case 19:/* Interrupt source register low */
         return;

     case 20:/* Interrupt Force Register high */
         s->pending = (s->pending & 0xffffffffULL) | (val << 32);
         break;

     case 21:/* Interrupt Force Register low */
         s->pending = (s->pending & 0xffffffff00000000ULL) | val;
         break;

     case 22:/* Normal Interrupt Pending Register High */
     case 23:/* Normal Interrupt Pending Register Low */
     case 24: /* Fast Interrupt Pending Register High  */
     case 25: /* Fast Interrupt Pending Register Low  */
         return;

     default:
         qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
                       HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
     }
     imx_avic_update(s);
 }

 static const MemoryRegionOps imx_avic_ops = {
     .read = imx_avic_read,
     .write = imx_avic_write,
     .endianness = DEVICE_NATIVE_ENDIAN,
 };

 static void imx_avic_reset(DeviceState *dev)
 {
     IMXAVICState *s = IMX_AVIC(dev);

     s->pending = 0;
     s->enabled = 0;
     s->is_fiq = 0;
     s->intmask = 0x1f;
     s->intcntl = 0;
     memset(s->prio, 0, sizeof s->prio);
 }

 static void imx_avic_init(Object *obj)
 {
     DeviceState *dev = DEVICE(obj);
     IMXAVICState *s = IMX_AVIC(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

     memory_region_init_io(&s->iomem, obj, &imx_avic_ops, s,
                           TYPE_IMX_AVIC, 0x1000);
     sysbus_init_mmio(sbd, &s->iomem);

     qdev_init_gpio_in(dev, imx_avic_set_irq, IMX_AVIC_NUM_IRQS);
     sysbus_init_irq(sbd, &s->irq);
     sysbus_init_irq(sbd, &s->fiq);
 }


 static void imx_avic_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);

     dc->vmsd = &vmstate_imx_avic;
     dc->reset = imx_avic_reset;
     dc->desc = "i.MX Advanced Vector Interrupt Controller";
 }

 static const TypeInfo imx_avic_info = {
     .name = TYPE_IMX_AVIC,
     .parent = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(IMXAVICState),
     .instance_init = imx_avic_init,
     .class_init = imx_avic_class_init,
 };

 static void imx_avic_register_types(void)
 {
     type_register_static(&imx_avic_info);
 }

 type_init(imx_avic_register_types)
	/*
	* i.MX31 Vectored Interrupt Controller
	*
	* Note this is NOT the PL192 provided by ARM, but
	* a custom implementation by Freescale.
	*
	* Copyright (c) 2008 OKL
	* Copyright (c) 2011 NICTA Pty Ltd
	* Originally written by Hans Jiang
	* Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
	*
	* This code is licensed under the GPL version 2 or later. See
	* the COPYING file in the top-level directory.
	*
	* TODO: implement vectors.
	*/

	#include "qemu/osdep.h"
	#include "hw/intc/imx_avic.h"
	#include "qemu/log.h"

	#ifndef DEBUG_IMX_AVIC
	#define DEBUG_IMX_AVIC 0
	#endif

	#define DPRINTF(fmt, args...) \
	do { \
	if (DEBUG_IMX_AVIC) { \
	fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_AVIC, \
	__func__, ##args); \
	} \
	} while (0)

	static const VMStateDescription vmstate_imx_avic = {
	.name = TYPE_IMX_AVIC,
	.version_id = 1,
	.minimum_version_id = 1,
	.fields = (VMStateField[]) {
	VMSTATE_UINT64(pending, IMXAVICState),
	VMSTATE_UINT64(enabled, IMXAVICState),
	VMSTATE_UINT64(is_fiq, IMXAVICState),
	VMSTATE_UINT32(intcntl, IMXAVICState),
	VMSTATE_UINT32(intmask, IMXAVICState),
	VMSTATE_UINT32_ARRAY(prio, IMXAVICState, PRIO_WORDS),
	VMSTATE_END_OF_LIST()
	},
	};

	static inline int imx_avic_prio(IMXAVICState *s, int irq)
	{
	uint32_t word = irq / PRIO_PER_WORD;
	uint32_t part = 4 * (irq % PRIO_PER_WORD);
	return 0xf & (s->prio[word] >> part);
	}

	/* Update interrupts. */
	static void imx_avic_update(IMXAVICState *s)
	{
	int i;
	uint64_t new = s->pending & s->enabled;
	uint64_t flags;

	flags = new & s->is_fiq;
	qemu_set_irq(s->fiq, !!flags);

	flags = new & ~s->is_fiq;
	if (!flags \|\| (s->intmask == 0x1f)) {
	qemu_set_irq(s->irq, !!flags);
	return;
	}

	/*
	* Take interrupt if there's a pending interrupt with
	* priority higher than the value of intmask
	*/
	for (i = 0; i < IMX_AVIC_NUM_IRQS; i++) {
	if (flags & (1UL << i)) {
	if (imx_avic_prio(s, i) > s->intmask) {
	qemu_set_irq(s->irq, 1);
	return;
	}
	}
	}
	qemu_set_irq(s->irq, 0);
	}

	static void imx_avic_set_irq(void *opaque, int irq, int level)
	{
	IMXAVICState s = (IMXAVICState )opaque;

	if (level) {
	DPRINTF("Raising IRQ %d, prio %d\n",
	irq, imx_avic_prio(s, irq));
	s->pending \|= (1ULL << irq);
	} else {
	DPRINTF("Clearing IRQ %d, prio %d\n",
	irq, imx_avic_prio(s, irq));
	s->pending &= ~(1ULL << irq);
	}

	imx_avic_update(s);
	}


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

	DPRINTF("read(offset = 0x%" HWADDR_PRIx ")\n", offset);

	switch (offset >> 2) {
	case 0: /* INTCNTL */
	return s->intcntl;

	case 1: /* Normal Interrupt Mask Register, NIMASK */
	return s->intmask;

	case 2: /* Interrupt Enable Number Register, INTENNUM */
	case 3: /* Interrupt Disable Number Register, INTDISNUM */
	return 0;

	case 4: /* Interrupt Enabled Number Register High */
	return s->enabled >> 32;

	case 5: /* Interrupt Enabled Number Register Low */
	return s->enabled & 0xffffffffULL;

	case 6: /* Interrupt Type Register High */
	return s->is_fiq >> 32;

	case 7: /* Interrupt Type Register Low */
	return s->is_fiq & 0xffffffffULL;

	case 8: /* Normal Interrupt Priority Register 7 */
	case 9: /* Normal Interrupt Priority Register 6 */
	case 10:/* Normal Interrupt Priority Register 5 */
	case 11:/* Normal Interrupt Priority Register 4 */
	case 12:/* Normal Interrupt Priority Register 3 */
	case 13:/* Normal Interrupt Priority Register 2 */
	case 14:/* Normal Interrupt Priority Register 1 */
	case 15:/* Normal Interrupt Priority Register 0 */
	return s->prio[15-(offset>>2)];

	case 16: /* Normal interrupt vector and status register */
	{
	/*
	* This returns the highest priority
	* outstanding interrupt. Where there is more than
	* one pending IRQ with the same priority,
	* take the highest numbered one.
	*/
	uint64_t flags = s->pending & s->enabled & ~s->is_fiq;
	int i;
	int prio = -1;
	int irq = -1;
	for (i = 63; i >= 0; --i) {
	if (flags & (1ULL<<i)) {
	int irq_prio = imx_avic_prio(s, i);
	if (irq_prio > prio) {
	irq = i;
	prio = irq_prio;
	}
	}
	}
	if (irq >= 0) {
	imx_avic_set_irq(s, irq, 0);
	return irq << 16 \| prio;
	}
	return 0xffffffffULL;
	}
	case 17:/* Fast Interrupt vector and status register */
	{
	uint64_t flags = s->pending & s->enabled & s->is_fiq;
	int i = ctz64(flags);
	if (i < 64) {
	imx_avic_set_irq(opaque, i, 0);
	return i;
	}
	return 0xffffffffULL;
	}
	case 18:/* Interrupt source register high */
	return s->pending >> 32;

	case 19:/* Interrupt source register low */
	return s->pending & 0xffffffffULL;

	case 20:/* Interrupt Force Register high */
	case 21:/* Interrupt Force Register low */
	return 0;

	case 22:/* Normal Interrupt Pending Register High */
	return (s->pending & s->enabled & ~s->is_fiq) >> 32;

	case 23:/* Normal Interrupt Pending Register Low */
	return (s->pending & s->enabled & ~s->is_fiq) & 0xffffffffULL;

	case 24: /* Fast Interrupt Pending Register High */
	return (s->pending & s->enabled & s->is_fiq) >> 32;

	case 25: /* Fast Interrupt Pending Register Low */
	return (s->pending & s->enabled & s->is_fiq) & 0xffffffffULL;

	case 0x40: /* AVIC vector 0, use for WFI WAR */
	return 0x4;

	default:
	qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
	HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
	return 0;
	}
	}

	static void imx_avic_write(void *opaque, hwaddr offset,
	uint64_t val, unsigned size)
	{
	IMXAVICState s = (IMXAVICState )opaque;

	/* Vector Registers not yet supported */
	if (offset >= 0x100 && offset <= 0x2fc) {
	qemu_log_mask(LOG_UNIMP, "[%s]%s: vector %d ignored\n",
	TYPE_IMX_AVIC, __func__, (int)((offset - 0x100) >> 2));
	return;
	}

	DPRINTF("(0x%" HWADDR_PRIx ") = 0x%x\n", offset, (unsigned int)val);

	switch (offset >> 2) {
	case 0: /* Interrupt Control Register, INTCNTL */
	s->intcntl = val & (ABFEN \| NIDIS \| FIDIS \| NIAD \| FIAD \| NM);
	if (s->intcntl & ABFEN) {
	s->intcntl &= ~(val & ABFLAG);
	}
	break;

	case 1: /* Normal Interrupt Mask Register, NIMASK */
	s->intmask = val & 0x1f;
	break;

	case 2: /* Interrupt Enable Number Register, INTENNUM */
	DPRINTF("enable(%d)\n", (int)val);
	val &= 0x3f;
	s->enabled \|= (1ULL << val);
	break;

	case 3: /* Interrupt Disable Number Register, INTDISNUM */
	DPRINTF("disable(%d)\n", (int)val);
	val &= 0x3f;
	s->enabled &= ~(1ULL << val);
	break;

	case 4: /* Interrupt Enable Number Register High */
	s->enabled = (s->enabled & 0xffffffffULL) \| (val << 32);
	break;

	case 5: /* Interrupt Enable Number Register Low */
	s->enabled = (s->enabled & 0xffffffff00000000ULL) \| val;
	break;

	case 6: /* Interrupt Type Register High */
	s->is_fiq = (s->is_fiq & 0xffffffffULL) \| (val << 32);
	break;

	case 7: /* Interrupt Type Register Low */
	s->is_fiq = (s->is_fiq & 0xffffffff00000000ULL) \| val;
	break;

	case 8: /* Normal Interrupt Priority Register 7 */
	case 9: /* Normal Interrupt Priority Register 6 */
	case 10:/* Normal Interrupt Priority Register 5 */
	case 11:/* Normal Interrupt Priority Register 4 */
	case 12:/* Normal Interrupt Priority Register 3 */
	case 13:/* Normal Interrupt Priority Register 2 */
	case 14:/* Normal Interrupt Priority Register 1 */
	case 15:/* Normal Interrupt Priority Register 0 */
	s->prio[15-(offset>>2)] = val;
	break;

	/* Read-only registers, writes ignored */
	case 16:/* Normal Interrupt Vector and Status register */
	case 17:/* Fast Interrupt vector and status register */
	case 18:/* Interrupt source register high */
	case 19:/* Interrupt source register low */
	return;

	case 20:/* Interrupt Force Register high */
	s->pending = (s->pending & 0xffffffffULL) \| (val << 32);
	break;

	case 21:/* Interrupt Force Register low */
	s->pending = (s->pending & 0xffffffff00000000ULL) \| val;
	break;

	case 22:/* Normal Interrupt Pending Register High */
	case 23:/* Normal Interrupt Pending Register Low */
	case 24: /* Fast Interrupt Pending Register High */
	case 25: /* Fast Interrupt Pending Register Low */
	return;

	default:
	qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
	HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
	}
	imx_avic_update(s);
	}

	static const MemoryRegionOps imx_avic_ops = {
	.read = imx_avic_read,
	.write = imx_avic_write,
	.endianness = DEVICE_NATIVE_ENDIAN,
	};

	static void imx_avic_reset(DeviceState *dev)
	{
	IMXAVICState *s = IMX_AVIC(dev);

	s->pending = 0;
	s->enabled = 0;
	s->is_fiq = 0;
	s->intmask = 0x1f;
	s->intcntl = 0;
	memset(s->prio, 0, sizeof s->prio);
	}

	static void imx_avic_init(Object *obj)
	{
	DeviceState *dev = DEVICE(obj);
	IMXAVICState *s = IMX_AVIC(obj);
	SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

	memory_region_init_io(&s->iomem, obj, &imx_avic_ops, s,
	TYPE_IMX_AVIC, 0x1000);
	sysbus_init_mmio(sbd, &s->iomem);

	qdev_init_gpio_in(dev, imx_avic_set_irq, IMX_AVIC_NUM_IRQS);
	sysbus_init_irq(sbd, &s->irq);
	sysbus_init_irq(sbd, &s->fiq);
	}


	static void imx_avic_class_init(ObjectClass klass, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(klass);

	dc->vmsd = &vmstate_imx_avic;
	dc->reset = imx_avic_reset;
	dc->desc = "i.MX Advanced Vector Interrupt Controller";
	}

	static const TypeInfo imx_avic_info = {
	.name = TYPE_IMX_AVIC,
	.parent = TYPE_SYS_BUS_DEVICE,
	.instance_size = sizeof(IMXAVICState),
	.instance_init = imx_avic_init,
	.class_init = imx_avic_class_init,
	};

	static void imx_avic_register_types(void)
	{
	type_register_static(&imx_avic_info);
	}

	type_init(imx_avic_register_types)